Patent Publication Number: US-9409183-B2

Title: Pump and submersible solids processing arrangement

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a non-provisional application claiming priority to provisional application Ser. No. 61/677,359, filed Jul. 30, 2012, and also claiming priority to provisional application Ser. No. 61/703,014, filed Sep. 19, 2012, the contents of both applications of which are incorporated herein in their entirety. 
    
    
     TECHNICAL FIELD 
     This disclosure relates, in general, to industrial pumps and, in particular, to improved pump and solids handling assemblies and methods for processing larger solids components in fluids to produce smaller sized solids to thereby facilitate the pumping of fluids having entrained solids. 
     BACKGROUND OF THE DISCLOSURE 
     In many industries where a fluid is to be pumped from a well, sump or other body of fluid, such as a settling pond, the fluids contain particulate matter, and centrifugal-slurry pumps are commonly used to process such fluids to remove the fluid and solids from the well, sump or body of fluid. In many industries, such as the mining industry for example, the particulate solids are of a relatively smaller size and the slurry pump that is used in the application is particularly selected for its ability to process the type and size of solids that are entrained in the fluid as a result of the mining operations. 
     In other industries, however, the fluid to be pumped contains larger solids or debris that, when pumped using conventional slurry pump arrangements, will clog the impeller or other pump structures and will cause the pump to become damaged or to seize. One such example is in the processing of mature fine tailings (MFT) in which a mixture of water, clay, sand and residual hydrocarbons that are produced during mine extraction are pumped into settling ponds that can be quite massive, and possibly several kilometers in width. Such settling ponds are produced to allow heavier particulates, such as sand, to settle to the bottom while water settles at the top of the pond. It is desirable, if not required by law, to remove the MFT in order to return the land to its previous state after the mining operations have ended 
     It is frequently the case that settling ponds are established on lands that were formerly covered with vegetation, including large trees. Therefore, subsequent pumping of the MFT from settling ponds results in encountering large solids of vegetation (e.g., tree stumps and branches), as well as other objects that might have been discarded into the pond. Thus, the pumping of sand and larger solids from settling ponds is particularly challenging to many centrifugal pumps, and ultimately causes them to fail. The pumping operation must then be stopped and the pump, if submerged in the fluid, must be lifted out of the sump or well to allow for repair or replacement of the pump, all of which results in costly operational down-time and loss of equipment. 
     It would be beneficial, therefore, to provide a pumping assembly that is structured to process large solids and fluid-entrained debris into smaller sized matter before entering into the pump to avoid damaging the pump. 
     SUMMARY 
     In a first aspect of the disclosure, embodiments are disclosed of a pump and submersible solids processing arrangement comprising a pump having a casing, an inlet and a discharge outlet, and a submersible solids processing arrangement positioned in fluid communication with the inlet of the pump and being structured to macerate solids entrained in a fluid prior to entry of the fluid and solids into the inlet of the pump, the submersible solids processing arrangement comprising a plurality of macerating members that are arranged about a center point of the submersible solids processing arrangement. The first aspect of the disclosure provides an advantage over conventional submersible solids processing arrangements in providing improved means for processing, or macerating, larger solids that are entrained in the fluid prior to the point of entry of the fluid and solids into the suction inlet of the pump, thereby avoiding clogging of the impeller or other internal pump parts by large solids that are large enough to enter the inlet of the pump, but not small enough to pass through the impeller or other structural elements of the pump without causing an obstruction or without becoming lodged in the pump. 
     As used in the disclosure and in the claims, “macerate”, “macerating” and “chopping” are used in a general and descriptive sense to mean that the solids entrained in a fluid are reduced to smaller pieces by some action including, but not limited to, cutting, chopping, slicing, tearing, crushing and/or grinding, and the terms “macerate”, “macerating” and “chopping” are not intended to be limited to their conventional dictionary definition or to any one of the enumerated actions that may operate, by the structures of the embodiments described herein, to reduce the size of a larger solid into smaller sizes of solid matter. Nor are the terms “macerate” or “macerating” meant to strictly imply that solids are liquefied, though liquefaction may occur. 
     In certain embodiments, the pump is a submersible pump. 
     In certain further embodiments, the inlet of the submersible pump is attached to the submersible solid processing arrangement. 
     In other embodiments, the pump is located at a distance from the submersible solids processing arrangement, and the pump is in fluid communication with the submersible solids processing arrangement via a length of conduit that is secured at one end to the inlet of the pump and secured at the other end to the submersible solids processing arrangement. 
     In certain embodiments, the pump is a rotodynamic pump having an impeller. 
     In certain embodiments, the center point of the submersible solids processing arrangement is parallel to a rotational axis of the impeller of the pump. 
     In yet other embodiments, the center point of the submersible solids processing arrangement is co-extensive with the rotational axis of the impeller. 
     In certain embodiments, the macerating members are each structured with a central axis, and some or all of the macerating members rotate about their respective central axis. 
     In other embodiments, certain of the macerating members rotate in a defined direction, and certain of the macerating members rotate in the opposite direction to the defined direction. 
     In yet other embodiments, the plurality of macerating members is arranged such that every other macerating member of the plurality of macerating members rotates in the same direction. 
     In one certain embodiment, the plurality of macerating members comprises six rotatable macerating members arranged to encircle the center point of the submersible solids processing arrangement, and a first group of three of the macerating members are spaced apart from each other and rotate in one direction, and the second group of three macerating members are each positioned between a pair of macerating members of the first group, the macerating members of the second group being rotatable in a direction opposite to the direction of rotation of the first group of macerating members. 
     In still another embodiment, the macerating members of one of said first group or said second group are fixed relative to the center point, and the macerating members of the other of said first or second group are structured to be radially adjustable relative to the center point. 
     In certain embodiments, the rotational direction of any macerating member can be selected through drive means attached to each macerating member. 
     In other certain embodiments, each macerating member is attached to a drive means, and the direction of rotation of any macerating member can be reversed to cause the macerating member to change direction of rotation. 
     In yet another embodiment, the drive means for effecting rotation of each macerating member is a hydraulic motor. 
     In yet other embodiments, the drive means of each macerating member is centrally controlled and monitored. 
     In still another embodiment, the macerating members are caused to rotate by suction pressure created by the pump. 
     In another embodiment of this aspect, the speed of rotation of each macerating member is the same. 
     In yet other embodiments, the speed of rotation of any macerating member may be selectively varied from the speed of rotation of another macerating member. 
     In certain embodiments, some or all of the macerating members are radially adjustable relative to the center point of the submersible solids processing arrangement so that each radially adjustable macerating member may be adjusted closer to or farther from the center point of the submersible solids processing arrangement. 
     In other certain embodiments, some or all of the macerating members are axially adjustably in a direction substantially parallel to a longitudinal axis extending through the center point of the submersible solids processing arrangement. 
     In other embodiments, each macerating member is structured with a plurality of macerating elements arranged along the macerating member such that macerating elements of one macerating member effect a cutting action with macerating elements of an adjacently positioned macerating member. 
     In still other embodiments, the macerating elements are axially adjustable in a direction along the central axis of the macerating member. 
     In yet another embodiment, the macerating elements are radially adjustable to position the macerating elements closer to or farther from the central axis of the macerating member. 
     In certain other embodiments, the macerating elements are formed as ring-like elements that extend outwardly from a surface of each macerating member and are positioned to intermesh with ring-like macerating elements of adjacently positioned macerating members. 
     In yet other embodiments, each macerating member of the plurality of macerating members has a central axis, and the central axis of each macerating member is parallel to a longitudinal line extending through the center point of the submersible solids processing arrangement. 
     In still other embodiments, each macerating member of the plurality of macerating members has a central axis, and the central axis of each macerating member is other than parallel to a longitudinal line extending through the center point of the submersible solids processing arrangement. 
     In certain embodiments, the submersible solids processing arrangement further comprises a support frame to which the pump is attached to provide fluid communication between the pump and the solids processing arrangement. 
     In certain other embodiments the support frame further comprises a first platform to which the inlet of the pump is attached in fluid communication therewith, and a second platform that is spaced from the first platform, and the macerating members are positioned between the first platform and second platform. 
     In certain embodiments, the submersible solids processing arrangement further comprises an agitator arrangement comprising at least one agitator positioned in proximity to the macerating members to direct flow of agitated fluid and solids to the macerating members of the solids processing arrangement. 
     In certain other embodiments, the agitator arrangement further comprises an arrangement of arms operatively connected to a motor to impart rotation to the arrangement of arms. 
     In yet other embodiments, the arms of the arrangement of arms are each secured in proximity to the motor in a manner that allows the arms to pivot, relative to the motor, in a plane that extends parallel to a plane in which a longitudinal line extending through the center point of the submersible solids processing arrangement lies. 
     In certain embodiments, the agitator arrangement comprises at least one sparger. 
     In still other embodiments, the pump and submersible solids arrangement further comprises at least one vertically-oriented blade positioned adjacent the arrangement of macerating members and spaced away from the center point of the submersible solids processing arrangement, the at least one vertically-oriented blade being positioned in proximity to the macerating elements of the macerating members to facilitate removal of solids matter from the macerating members. 
     In certain embodiments, the pump further comprises a bearing housing attached to the pump casing at a point opposite the suction inlet, and a pump shaft which extends through the bearing housing and the pump casing to be operatively connected to an impeller, the pump being further configured with a cylindrical cartridge seal arrangement surrounding the pump shaft and being positioned between the bearing housing and pump casing to seal the pump shaft from the pump casing, the cylindrical cartridge seal arrangement comprising a series of lip seals and deflectors positioned adjacent each lip seal, a slinger device and a centrally positioned lubrication port positioned to introduce a lubricant to the series of lip seals. 
     In a second aspect of the disclosure, a submersible solids processing arrangement comprises a plurality of macerating members arranged about a center point defining a flow direction along which macerated solids and fluid are directed toward a pump inlet. The second aspect of the disclosure provides an advantage over conventional submersible solids processing arrangements in providing improved means for processing solids that are entrained in a fluid into smaller sized matter that can then be directed toward a flow direction that delivers the fluid and processed solids to a pump, thereby relieving potential clogging problems in the pump. 
     In a third aspect of the disclosure, a seal arrangement for sealing the pump shaft of a pump comprises a rotating seal having a seal face, a stationary seal having a seal face positioned adjacent to and in contact with the seal face of the rotating seal, a gland housing configured to surround a pump shaft and positioned to support the stationary seal, a plurality of lip seals positioned serially within the gland housing and a plurality of deflectors, one deflector being positioned adjacent each lip seal of said plurality of lip seals. The third aspect of the disclosure provides an advantage over conventional sealing arrangements by providing an arrangement of lip seals and deflectors that more effectively prevent slurry from entering into the seal arrangement and infiltrating the seal faces. 
     In certain embodiments of the sealing arrangement, a slinger device is further positioned adjacent the gland housing and is operative to deflect fluid and solids in a direction away from the gland housing. 
     In a fourth aspect of the disclosure, a method of processing and pumping solids-entrained fluid involves:
     providing a pump and submersible solids processing arrangement, comprising:   a pump having a casing, a suction inlet and a discharge outlet, and a submersible solids processing arrangement in fluid communication with the suction inlet of the pump and being structured to process into smaller sized matter solids that are entrained in a fluid prior to entry of the fluid into the suction inlet of the pump;   positioning the pump in proximity to a source of fluid having entrained solids;   creating suction at said suction inlet of the pump thereby drawing fluid and the entrained solids into the submersible solids processing arrangement positioned in a body of fluid;   operating the submersible solids processing arrangement to effect maceration of the solids entrained in the fluid as the fluid passes through the submersible solids processing arrangement and into the suction inlet of the pump; and   moving the fluid and macerated solids entrained in the fluid through the pump to the discharge outlet of the pump.   

     The methods of this fourth aspect provide improved means for processing large solids that are entrained in a fluid to reduce the solids to smaller sizes, prior to reaching the suction inlet of the pump, to thereby prevent damage to the impeller and the pump arising from large-sized debris being lodged in the impeller or other structural elements of the pump. 
     In certain embodiments, the submersible solids processing arrangement comprises a plurality of macerating members positioned about a center point of the submersible solids processing arrangement. 
     In certain other embodiments, the macerating members are structured to be rotatable about a central axis of the macerating member, and fluid and solids are drawn into the arrangement of macerating members in a direction perpendicular to a flow direction defined by a longitudinal line extending through the center point of the submersible solids processing arrangement. 
     In yet other embodiments, the macerating members are structured with a plurality of macerating elements that are oriented to mesh with macerating elements of adjacently positioned macerating members to effect maceration of solids entrained in the fluid. 
     Other aspects, features, and advantages will become apparent from the following detailed description when taken in conjunction with the accompanying drawings, which are a part of this disclosure and which illustrate, by way of example, principles of the various aspects of the embodiments of the disclosure. 
    
    
     
       DESCRIPTION OF THE FIGURES 
       The accompanying drawings facilitate an understanding of the various embodiments, in which: 
         FIG. 1  is an isometric perspective view of a first aspect of a pump and submersible solids processing arrangement in accordance with this disclosure; 
         FIG. 2  is a view in elevation and in partial cross section of the pump and submersible solids processing arrangement shown in  FIG. 1 ; 
         FIG. 3  is a schematic view of another aspect of the disclosure depicting the pump separated from the submersible solids arrangement by a length of conduit; 
         FIG. 4  is an isometric view of a submersible solids processing arrangement in accordance with the disclosure; 
         FIG. 5  an isometric view of an alternative embodiment of a submersible solids processing arrangement in accordance with the disclosure; 
         FIG. 6  is a schematic view of an alternative configuration of the macerating members; 
         FIG. 7  is a schematic view of another alternative configuration of the macerating members; 
         FIG. 8  is an isometric view of another embodiment of the pump and submersible solids processing arrangement; 
         FIG. 9  is a view in elevation and in partial cross section of the pump and submersible solids processing arrangement shown in  FIG. 8 ; 
         FIG. 10  is an isometric view of an alternative embodiment of a pump and solids processing arrangement in accordance with this disclosure; 
         FIG. 11  is a view in elevation of the pump and submersible solids processing arrangement shown in  FIG. 10 ; 
         FIG. 12  is an enlarged view of a portion of the bearing housing noted in  FIG. 11 ; 
         FIG. 13  is an isometric perspective view of the pump and submersible solids processing arrangement illustrating the lower portion of the submersible solids processing arrangement; 
         FIG. 14  is an enlarged view of the inlet pathway shown in  FIG. 10 ; 
         FIG. 15  is a plan view of the pump and submersible solids processing arrangement shown in  FIG. 13 , taken at line W-W; 
         FIG. 16  is an axial cross section view of the submersible solids processing arrangement shown in  FIG. 11 , taken at line X-X; 
         FIG. 17  is a plan view of an agitator arm taken at line Y-Y of  FIG. 11 ; 
         FIG. 18  is a view in radial cross section of a portion of the bearing housing of the pump and submersible solids processing arrangement depicting a cartridge seal arrangement; and 
         FIG. 19  is a view in radial cross section of a pump illustrating the relative positioning of the cartridge seal arrangement in the pump. 
     
    
    
     DETAILED DESCRIPTION 
     The pump and submersible solids processing arrangement of the disclosure is structured to process solids that are entrained in fluid so that the solids can be passed into and through the pump for discharge from the pump. The pump and submersible solids processing arrangement can be adapted to any number of applications in any number of industries and, therefore, the specific elements of the pump and submersible solids processing arrangement may be selected for the particular application and the conditions under which the pump and submersible solids processing arrangement are employed. Consequently, while the elements of the pump and submersible solids processing arrangement are generally described and illustrated herein with respect to a submersible centrifugal pump and submersible solids processing assembly by way of example only, it is to be understood that the scope of this disclosure is not to be limited to the specific elements described and illustrated herein since many modifications are possible within the scope of the disclosure as defined by the claims. 
       FIGS. 1 and 2  illustrate a first aspect of a pump and submersible solids processing arrangement  10  of the type that may be used in a sump, well or body of fluid to process and pump the fluid from the sump, well or body of fluid, especially fluid that has entrained therein larger sized solids or debris that cannot be processed by a pump without clogging or causing seizing of the pump. 
     The pump and submersible solids processing arrangement  10  generally comprises a pump  12  that is positioned in relationship to a body or source of fluid in which solids are entrained, and a submersible solids processing arrangement  14  for processing larger solids that are entrained within a fluid. 
     The pump  12  may generally be comprised of a casing  16 , a suction inlet  18 , as best seen in  FIG. 2 , and a discharge outlet  20 . The discharge outlet  20  may be configured with a flange  22  to which piping (not shown) may be attached for carrying the pumped fluid to a higher elevation (e.g., ground level above the sump, well or body of fluid, etc.) or to a location away from the pump. 
       FIG. 2  depicts a centrifugal pump, the pump casing  16  of which is generally configured with a volute  26  in which an impeller  30  is positioned in known fashion. The impeller  30  is attached to a pump shaft  32  by means of an impeller nut  33 , and the pump shaft  32  is, in turn, attached to a drive shaft  35  by known means. The drive shaft  35  is connected to a drive motor  36  which imparts rotation to the impeller  30 . The impeller  30  may be of any type that is suited to the particular pumping application. For example, the impeller  30  may be of the closed, open, semi-open or recessed type, or any other suitable type or configuration. The pump shaft  32  extends through a bearing housing  34  to which the casing  16  of the pump  12  is attached by bolts  38 , as best seen in  FIG. 1 . 
     It should be noted that in  FIGS. 1, 8 and 10 , a submersible centrifugal slurry pump is shown as the pumping means. However, other rotodynamic pumps of differing construction and type may be used in the pump and submersible solids processing arrangement  10  described in this disclosure. Other types of pumps, such as positive displacement pumps, may be used in the pump and submersible solids processing arrangement, and other types of pumps which are not submersible may also be used in the disclosed arrangement, as described further hereinafter. This disclosure is not intended to limit, and should not be interpreted to be limiting of, the type of pump that may be used in the disclosed arrangement. Nor should this disclosure be interpreted to limit the placement or positioning of the pump  12  relative to a body of fluid and/or limit the location or positioning of the pump relative to the solids processing arrangement  14 . For example, the pump  12  depicted in the figures herein are shown to be in a generally vertical orientation. However, the pump may be oriented in horizontal adjacency to the submersible solids processing arrangement, and/or the pump may be a horizontally configured pump. 
     The pump and submersible solids processing arrangement  10  further includes a solids processing assembly  14  that is positioned in fluid communication with the suction inlet  18  of the pump  12 . The solids processing assembly  14  is positioned with respect to a body of fluid to encounter the flow of fluid and solids as it moves or is directed toward the suction inlet  18  of the pump  12 . The solids processing assembly  14  is structured to macerate the solids entrained in the fluid to effectively reduce the size of the solids so that the solids can be passed through the inlet  18 , through the impeller  30  and through the volute  26  of the pump  12  without becoming lodged in the pump structures. The solids processing arrangement  14  may be structured and configured in any number of ways to effect a reduction in size of solids entrained in a body of fluid. 
     In general, the pump  12  is joined to the solids processing arrangement  14  in a manner that places the pump in fluid communication with the solids processing arrangement so that fluid and solids passing through the solids processing arrangement  14  are moved or directed toward the inlet  18  of the pump  12 . In one aspect of the disclosure illustrated in  FIGS. 1 and 2 , the pump  12  is connected to the solids processing arrangement  14  by, for example, an inlet pathway  40  comprising an entry liner or throatbush  42  which is attached to the casing  16  of the pump  12  by bolts  44 . 
     In another aspect of the disclosure depicted in  FIG. 3 , the inlet  18  of pump  12  is in fluid communication with the solids processing arrangement  14  by means of a conduit  46  of a selected length. In this aspect, the pump  12  is not submerged in the body of fluid, but is positioned on a support surface  47 , such as a barge, that is positioned above, on or to the side of the body of fluid  48 . Fluid and solids that are processed by the submersible solids processing arrangement  14  flow through the conduit  46  in a direction toward the inlet  18  of the pump  12 . It may be said that the conduit  46  defines a flow direction D in which the fluid and macerated solids flow toward the inlet  18  of the pump  12  that is positioned on the support surface  47 . 
     Referring to  FIG. 4 , the solids processing arrangement  14  of the disclosure is generally comprised of an assembly of elements that processes the solids entrained in a fluid by macerating the solids into small sizes, and directs the processed solids and fluid toward the inlet of the pump  12 . The solids processing arrangement  14  principally comprises a plurality of macerating members  50  that are arranged to interact with fluid-entrained solids to provide maceration of the solids. The macerating members  50  are positioned to surround a center point  52  that generally defines a longitudinal axis of the submersible solids processing arrangement  14  and generally defines a flow pathway for fluid and solids that have been processed by the macerating members  50 . 
     In some embodiments, described further hereafter, the longitudinal axis that defines the center point  52  extends through the suction inlet  18  of the pump  12 , and may be co-extensive with the rotational axis of the impeller  30 . In alternative embodiments of the disclosure, the longitudinal axis that defines the center point  52  may be parallel to, but not co-extensive with the rotational axis of the impeller  30 . In still other embodiments, the longitudinal axis that defines the center point  52  of the submersible solids processing arrangement  14  may be generally parallel to the flow direction D ( FIG. 3 ) of the flow of fluid and solids toward the inlet  18  of the pump  12 , and may or may not be co-extensive with the flow direction D. 
     The macerating members  50  are each configured with a central axis  54 . The central axis  54  may also be a rotational axis about which the macerating member  50  may rotate if so constructed. The central axis  54  of each macerating member  50  may, in one aspect of the invention, be oriented parallel to the center point  52  of the submersible solids processing arrangement  14 , as depicted in  FIG. 4 , and fluid and solids entering between the macerating members is generally directed through the assembly of macerating members  50  is a direction F that is normal to the longitudinal axis that defines the center point  52  of the solids processing arrangement and/or the flow direction D of a conduit  46  ( FIG. 3 ). 
     Alternatively, as depicted schematically in  FIG. 5 , the macerating members  50  may be arranged to surround the center point  52  of the submersible solids processing arrangement  14 , but the central axis  54  of the macerating members are generally oriented normal to the longitudinal axis that defines the center point  52 . Fluid and solids entering between the macerating members  50 , as depicted in  FIG. 5 , are generally directed through the assembly of macerating members  50  in a direction F that is normal to the longitudinal axis that defines the center point  52  of the solids processing arrangement  14  and/or flow direction D ( FIG. 3 ) of a conduit  46 . The arrangement of the macerating members  50  around the center point  52 , whether oriented as shown in  FIG. 4  or  FIG. 5 , provides an improved mode of encountering and processing solids in a body of fluid by facilitating contact between the solids and the macerating members  50 , and by providing an improved flow path of fluid and solids directed toward the inlet of the pump. 
     The number of macerating members  50  that are employed in the submersible solids processing arrangement  14  can number from two up to twenty or more. The number of macerating members  50  that are employed in the arrangement may ultimately be dictated by the type of fluid-entrained solids that are to being processed, and/or by the conditions of the application, such as location of the body of fluid or temperature conditions. 
     The macerating members  50  may generally be configured as cylindrically-shaped and elongated drums  56  having a selected height and diameter, as depicted in  FIG. 4 . Alternatively, the macerating members may have any other suitable shape, configuration or geometry. For example, the macerating members, as shown in  FIG. 6 , may be conical in shape, having a base portion that is greater in width than an opposing apex portion. The conically-shaped macerating members are suitably arranged, in accordance with the subsequent disclosure, so that the outer surfaces of the conically-shaped macerating members, which bear cutting or macerating elements, are in adjacent position to effect maceration of solids that flow between adjacently positioned conically-shaped macerating members.  FIG. 7  illustrates yet another exemplar configuration that may be adopted for providing macerating members  50 . 
     Referring again to  FIG. 4 , the submersible solids processing arrangement  14  may further include a support frame  60  which provides support for the macerating members  50 . The support frame  60  may provide a connection point  62  for attachment of an inlet pathway  40  or conduit  47  to the submersible solids processing arrangement  14 , and may also supply support for the pump  12  when the pump  12  is connected in proximity to the solids processing arrangement  14  as shown in  FIGS. 1 and 2 . In one exemplar embodiment, the support frame  60  comprises a first platform  64  and a second platform  66  that is oriented parallel to the first platform  64  and spaced apart from the first platform  64 . The spaced relationship of the first platform  64  and second platform  66  may be maintained by a plurality of spacers  68  that span between the first platform  64  and second platform  66 . The second platform  66 , in use, may be oriented toward the bottom of the sump, well or body of fluid. Notably, however, the solids processing arrangement  14  can be suspended at any selected depth within a sump, well or body of fluid. 
     The macerating members  50  may be positioned between the first platform  64  and the second platform  66  such that the central axis  54  of each macerating member  50  extends between the first platform  64  and the second platform  66 . Some or all of the macerating members  50  are journalled between the first platform  64  and the second platform  66  so that they rotate about their respective central axis  54  relative to the support frame  60 . Thus, some of the macerating members  50  may be stationarily fixed to the support frame  60  while others are able to rotate. Alternatively, all of the macerating members  50  may rotate. The central axis  54  of one or more macerating members  50  may be fixed relative to the center point  52  of the solids processing arrangement  14 , while maintaining rotational capability relative to the support frame  60 . 
     Alternatively, one or more macerating members  50  may be radially adjustable relative to the center point  52  of the solids processing arrangement  14 . Thus, for example, slots  70  may be formed in the second platform  66  and slots  72  may be formed in the first platform  64  through which a macerating member  50  may be journalled, thereby allowing the macerating member  50  to be adjusted, in a radial direction, and positioned closer to the center point  52  or farther away from the center point  52 . 
     Further, in some aspects of the disclosure, one or more macerating members  50  may be axially adjustable relative to the first platform  64  and the second platform  66 , which may be particularly advantageous for providing adjustment of the macerating members  50  to accommodate or provide different macerating capabilities when processing different types or sizes of solids (i.e., to provide selected spacing between cutting elements or macerating elements on adjacent macerating members, as described more fully hereinafter). 
     In any given construction of the solids processing arrangement  14 , the macerating members  50  are connected to the support frame  60  in a manner that allows each macerating member  50  to be removed from the support frame  60 , independently of any other macerating member, for repair or replacement. 
     The adjustable positioning of the movable macerating members  50  relative to the support frame  60  may be performed prior to the positioning of the submersible solids processing arrangement  10  in a sump or body of fluid. Alternatively, radial adjustment of the macerating members  50  may be accomplished by associating a hydraulic or pneumatic device with the movable macerating members  50  to effect radial movement of the macerating members  50  once the submersible solids processing arrangement  10  is positioned in a body of fluid, and in response to pumping conditions that develop once the arrangement  10  is positioned in a body of fluid. 
     In one particular embodiment, the macerating members  50  may be numbered and arranged such that every other macerating member in the arrangement of macerating members, defining a first group of macerating members, is radially adjustable, and every alternate macerating member, positioned adjacent to movable macerating members and defining a second group, is stationary. Thus, for example, in an array of six macerating members  50 , every other macerating member  50  in the array, which defines a first group, is radially movable and has a stationary macerating member  50  positioned between two radially movable macerating members  50 , the alternating stationary macerating members defining a second group. The adjustability of the macerating members relative to each other provides selective and enhanced maceration of solids responsive to the amount and/or type of solids that are encountered in a given body of fluid. 
     Each macerating member  50  may be connected to a drive device  74  which imparts rotation, and/or axial or radial movement, to the macerating member  50  to which it is attached. The drive devices  74  may, in one embodiment, be hydraulic motors that are monitored and controlled remotely (i.e., from a point outside of the sump or body of fluid). Other types of motor devices may be equally suitable, however, such as pneumatic motors. As a further example, a gear system may be provided which operates to rotate some or all of the macerating members  50 , thereby eliminating the need for individual motor devices dedicated to each macerating member  50 . 
     The drive devices  74  are, most suitably, capable of providing variable speeds of rotation to the macerating members. Further, the drive devices  74  are each, most suitably, capable of reversing the direction of rotation of the macerating member  50  to which it is associated. The reversal of direction of rotation of the macerating member  50  may be accomplished by monitoring and control means, and/or may be automatically initiated by, for example, the encountering by adjacently positioned macerating members of a large solid that becomes lodged between macerating members. The ability of the drive device  74  to automatically or selectively effect a reversal of rotational direction in the macerating member  50  allows lodged solids and debris to be dislodged. 
     The direction of rotation of each of the macerating members  50  in an array can be selected. Thus, for example, some of the macerating members  50 , i.e., a first group, may be held stationary while adjacent macerating members  50 , defining a second group, are caused to rotate. More specifically, every other macerating member  50  in an array may be caused to rotate while macerating members positioned between rotating macerating members are held stationary. Alternatively, all macerating members  50  may be caused to rotate in the same direction of rotation. Alternatively, every other macerating member in an array (i.e., a first group) may be caused to rotate in one direction, while every other macerating member (i.e., a second group) is caused to rotate in an opposite direction of rotation. Any number of rotational arrangements of macerating members  50  is possible to suit the conditions of the pumping process. 
     Additionally, the rotational speed of each of the macerating members  50  can be individually selected suitable to the solids processing conditions. Thus for example, all of the macerating members can be caused to rotate at the same rotational speed. Alternatively, certain numbers of the macerating members (e.g., a first group) may be caused to rotate at a greater rotational speed than other macerating members (e.g., a second group). In one particular embodiment, every other macerating member in an array (i.e., a first group) may be caused to rotate at greater speed than every other alternating macerating member (i.e., a second group). In addition to the selection of the same or variable speeds of rotation of the macerating members, the direction of rotation of the macerating members may be selected to provide varying solids-processing conditions. The ability to vary the speed of the macerating members aids in keeping the macerating members free of solids and debris. 
     The drive devices  74  are, most suitably, monitored remotely and in real time so that when a slowing of a drive device  74  is perceived, the motor will react, or be made to react, appropriately to reverse direction and/or change speed so that solids or debris that may be lodged between macerating members  50  can be dislodged. 
     Referring again to the embodiment depicted in  FIGS. 1 and 2 , the solids processing arrangement  14  is structured with a plurality of macerating members  50  that are positioned around the center point  52  of the submersible solids processing arrangement  14 , and in proximity to the suction inlet  18  of the pump  12 . As illustrated, the macerating members  50  may be positioned to surround the suction inlet  18 . The macerating members  50  may generally be configured as cylindrically-shaped drums  56  having a selected diameter. Each of the macerating members  50  is further configured with a plurality of macerating elements  78  that extend outwardly from the outer surface  58  of the macerating member  50 . The macerating elements  78  in this particular embodiment are shown as being arranged in longitudinal rows  80  that extend the length of the cylindrical drums of the macerating members  50 . However, the number and spatial arrangement of the macerating elements  78  on the macerating members  50  may vary. 
     The macerating elements  78  may be formed with edges  82  that, in some embodiments, may be blunt for tearing the solid matter or, in other embodiments, may be sharp for cutting or slicing the solid matter. The macerating members  50  may be configured with a mixture of macerating elements  78 , some of which are structured with blunt edges and some of which are structured with sharp edges, or the macerating elements  78  may be of one similar type or construction. 
     In one particular arrangement, the macerating elements  78  may be arranged on adjacently positioned macerating members  50  such that the macerating elements  78  mesh together to define a chopping zone  84  therebetween, as best seen in  FIG. 2 . The intermeshing of the macerating elements  78 , therefore, cause a maceration of the solids as they pass between adjacently positioned macerating members  50 . The macerating elements  78  may be adjustable or movable relative to the outer surface  58  of the macerating member  50 , and, for example, may be axially adjustable or movable relative to the length of the macerating member  50 . The macerating elements  78  may also be radially adjustable relative to the outer surface  58  of the macerating member  50  and relative to the central axis  54  of the macerating member  50 . 
     In the embodiment of  FIGS. 1 and 2 , the support frame  60  provides support for both the pump  12  and the solids processing arrangement  14 . The macerating members  50  may, in this embodiment, be journalled between the first platform  64  and the second platform  66  by means of a lower rod  86 , as best seen in  FIG. 2 , that extends from the macerating member  50  into a bearing  88  formed in the second platform  66 , and by a drive stud  90  that extends from a drive device  74  positioned above the first platform  64 , the drive stud  90  extending through the first platform  66  and into a stud well  92  formed in the macerating member  50 . 
     The macerating members  50  are each journalled to rotate about a central axis  54  of the macerating member  50 , which, in this embodiment, is parallel to the rotational axis  94  of the impeller  30 . The macerating members  50  may, in the alternative, be journalled to rotate about an eccentric axis that is oriented parallel to the rotational axis  94  of the impeller  30 . In yet a further embodiment, the macerating members  50  may rotate about the center point  52 , which may be oriented at an angle to the rotational axis  94  of the impeller, or is oriented normal to the rotational axis  94  of the impeller. 
     As further shown in  FIG. 2 , the support frame  60  is connected to an upstanding collar  96  that is co-axially positioned relative to the rotational axis  94  of the impeller  30 . The upstanding collar  96  has an interior configuration which, as seen in cross section in  FIG. 2 , provides a first cylindrical section  98  that is positioned adjacent to and extends downwardly from the suction inlet  18  of the pump  12 , and provides a second, frustoconically-shaped section  100  that extends downwardly and away from the first cylindrical section  98  flaring outwardly in the direction of the second platform  66  of the support frame  60 . The plurality of macerating members  50  are arranged about the outer circumference of the lower edge  102  of the second, frustoconically-shaped section  100  and provide a central columnar space  104  below the second, frustoconically-shaped section  100  into which fluid and solids flow for direction toward the inlet  18  of the pump  12 . 
     As shown in  FIG. 1 , the pump  12  is secured to the support frame  60  by means of stabilizers in the form of stabilizing support columns  106  that are secured to the bearing housing  34 , by radially-extending beams  108 , and which are further secured to the first platform  64  of the support frame  60 . Lifting eyes  110  are formed in the bearing housing  34  to which cables (not shown) are attached for lowering and raising the pump and submersible solids processing arrangement  10  into a well, sump or body of fluid. 
     In an alternative aspect of construction of a submersible pump and solids processing assembly that is illustrated in  FIGS. 8 and 9 , the pump and submersible solids processing assembly  200  comprises a submersible pump  212  and a solids processing arrangement  214 . In a similar manner as previously described, and as best viewed in  FIG. 8 , the submersible pump  212  may generally be comprised of a pump casing  216  having a suction inlet  218  and a discharge outlet  220 . As shown in  FIG. 8 , the discharge outlet  220  is configured to receive additional piping  222  oriented for carrying the pumped fluid to a higher elevation above the bottom of the sump or body of fluid. The pump casing  216  is configured with a volute  226  in which is positioned an impeller  230 , which is attached to a pump shaft  232  for rotation. The pump shaft  232  extends through a bearing housing  234  that is attached to the pump casing  216 . 
     As seen in  FIG. 9 , a throatbush  240  is attached to the pump casing  216  thereby forming the suction inlet  218  of the pump  212 . An inlet sleeve  242 , as described further below, is positioned adjacent to the throatbush  240  and provides an extended inlet pathway for movement of fluid and solids from the solids processing arrangement  214  toward the impeller  230 . 
     The solids processing arrangement  214  is positioned adjacent to the suction inlet  218  of the pump casing, or the throatbush  240 , to direct fluid and solids into the suction inlet  218 . The solids processing arrangement  214  of this embodiment generally comprises a plurality of processing or macerating members  250  which, as depicted in  FIGS. 8 and 9 , may be cylindrically-shaped elements having a selected height and diameter. 
     The solids processing arrangement  214  further comprises a support frame  252  having an upper plate  254  and a lower plate  256  that is spaced apart from the upper plate  254 . The support frame  252  may also comprise spacers or locating elements  258  that extend between the upper plate  254  and the lower plate  256 , and secure to the upper plate  254  and lower plate  256  to provide added stability to the support frame  252 . The locating elements  258 , in addition, may provide feet  260  which operate to position the support frame  252 , and particularly the lower plate  256  of the support frame  252 , above the bottom or floor of a sump or pit into which the pump and submersible solids processing assembly  200  is lowered, thereby providing a pathway for fluid to move from the bottom of the sump or pit toward the solids processing arrangement  214 . It is not necessary, however, for the submersible solids processing arrangement  214  to be positioned at the bottom of a sump or body of fluid since it may be positioned at any desired depth. 
     The macerating members  250  are generally positioned between the upper plate  254  and lower plate  256  of the support frame  252 . Most suitably, the macerating members  250  are journalled between the upper plate  254  and the lower plate  256  such that each macerating member  250  rotates about a central axis  262  thereof. The central axis  262  of each macerating member  250  may generally be parallel, or substantially parallel, to the rotational axis  264  of the impeller  230 . In alternative embodiments, the central axis  262  of the macerating members  250  may be oriented at an angle to the rotational axis  264  of the impeller  230 , or even oriented in a direction normal to the rotational axis  264  of the impeller  230 . 
     The support frame  252  may further include a bearing element  266  that is positioned adjacent the upper plate  254  of the support frame  252 , the bearing element  266  providing a bearing opening  268  sized to receive a center post  270  of the macerating member  250 . The bearing element  266  may comprise a plurality of bearing elements  266  that are individually secured to the upper plate  254  of the support frame  252 , or the bearing element  266  may be a single array, or ring-like element, that is attached to the upper plate  254  and which is formed with a number of bearing openings  268  as described. The bearing element  266 , in either construction, is positioned to encircle the inlet sleeve  242 , and may further operate to secure the inlet sleeve  242  in position between the throatbush  240  and the upper plate  254  of the support frame  252 . 
     Each macerating member  250  is also journalled in the lower plate  256  by a central pin  272  that is borne in an opening  274  in the lower plate  256 . Bearings  276  may be provided in the openings  274  to facilitate rotation of the central pin  272  therein. In this construction, the macerating members  250  may rotate freely under suction pressure induced by the suction inlet of the pump. Alternatively, the macerating members  250  may be provided with a drive device  278  associated with the bearing element  266 , or with the lower plate  256 , which impart rotation to the macerating members  250 . 
     In the embodiment depicted in  FIGS. 8 and 9 , the macerating members  250  include macerating elements  280  that extend outwardly from the outer surface  281  of the cylindrical form of the macerating members  250 . The macerating elements  280 , in this embodiment, are provided in the form of continuous rings  282  that encircle the circumference of the cylindrical form of the macerating member  250 . Notably, while shown as continuous rings  282 , the rings may be formed with discontinuities about the circumference of the macerating member  250  while still maintaining a substantially complete, ring-like encirclement of the circumference of the macerating member  250 . 
     A plurality of macerating elements  280  is located about the length of each macerating member  250  and each macerating element  280  is spaced apart from adjacently positioned macerating elements  280  on the same macerating member  250 . Consequently, and as best appreciated in  FIG. 4 , the macerating elements  280  positioned about the circumference of one macerating member  250  are spaced in offset arrangement from the macerating elements  280  positioned about the circumference of an adjacent macerating member  250  such that the macerating elements  280  on adjacently positioned macerating members  250  intermesh with each other. 
     The macerating elements  280  may be formed with an outer circumferential edge that is circumferentially even (i.e., the distance measured from the outer surface  281  of the macerating member  250  to the outer circumferential perimeter edge of the macerating element  280  is consistent about the circumference of the macerating element  250 ), and the circumferential edge may be formed with any manner of edging, such as beveling, that provides a sharp edge for cutting or tearing. 
     Alternatively, as illustrated in  FIGS. 8 and 9 , the macerating elements  280  may be configured with an outer circumferential perimeter edge  284  in which cutting elements, such as teeth  286 , are formed to facilitate maceration or cutting of solid material that enters into the solids processing arrangement  214 . The macerating elements  280  on any given macerating member  250  may be varied between those having an even peripheral edge and those having an arrangement of teeth  286 . 
     As depicted further in  FIG. 9 , the outer circumferential measure of each macerating element  280  may vary, thereby providing a longitudinal offset arrangement between adjacent macerating elements  280  of adjacently positioned macerating members  250 . The variance in circumferential measure may arise, in one aspect, from the variation in circumference provided by forming cutting elements  288 , or teeth  286 , in the macerating elements  280 . Any number of variations of size, circumferential dimension or configuration of the macerating elements  280  may be employed in the solids processing arrangement  214 . It is only important that the arrangement of macerating members  250  and macerating elements  280  provide or define a processing zone  290  between adjacent macerating members  250  within which solids that are entrained in the pumping fluid can be processed to smaller sizes and directed into the inlet sleeve  242  and suction inlet  218  for delivery to the impeller  230 . 
     The macerating elements  280  may, in one aspect, be securely fixed relative to the outer surface  281  of the macerating members  250 . In an alternative aspect, the macerating elements  280  may be axially adjustable along and relative to the axial length, or relative to the center axis  262 , of the macerating member  250 . Consequently, the macerating elements  280  may be “fine-tuned” to provide a selected type or degree of maceration dictated by the type of solids being processed. Additionally, the macerating elements  280  may be radially adjustable relative to the central axis  262  of the macerating member  250  to also provide a selected type or degree of maceration by varying the distance of the cutting elements  288  at the circumferential periphery or perimeter of the macerating elements  280  relative to the outer surface  281  of the macerating member  250 . 
     The embodiment of the pump and submersible solids processing assembly  200  illustrated in  FIGS. 8 and 9  may also include a lifting frame  300  comprising lateral beams  302 , here shown to be three in number, each of which is secured to the bearing housing  234  by radial beams  304  and is secured to the support frame  252 . The lifting frame  300  includes lifting apparatus  308  to which chains  310  may be connected from lifting the pump and submersible solids processing assembly  200  out of a sump or pit. 
       FIGS. 10-17  illustrate yet another aspect of the pump and submersible solids processing assembly  200  of the disclosure where like or similar elements previously described with respect to the embodiment shown in  FIGS. 8 and 9  are referred to by the same reference numerals. The pump and submersible solids processing assembly  200  of this aspect comprises a submersible pump  212  that is connected to a submersible solids processing arrangement  214 . The pump  212  comprises a casing  216  having an inlet  218  and a discharge outlet  220 , and is structured with a volute  226  within which an impeller  230  is positioned. The impeller is attached to a pump shaft  232  that extends through a bearing housing  234 . Notably, as shown in  FIG. 12 , the bearing housing  234  may have vibration flats  236  fitted on the outer surface of the bearing housing  234 , the function of which is provide means for attaching vibration sensors (not shown) to the bearing housing  234 . 
     The pump and submersible solids processing arrangement  200  further includes a solids processing arrangement  214  that is positioned in proximity to the suction inlet  218  of the pump  212 . The solids processing arrangement  214  is positioned to encounter the flow of fluid and solids as they move toward the suction inlet  218  of the pump  212 , and is structured to macerate the solids content of the fluid to effectively reduce the size of the solids so that the solids can be passed through the impeller  230  and volute  226  of the pump  212  without becoming lodged in the pump structures. 
     The pump  212  is attached to the solids processing arrangement  214  by means of an inlet pathway  238  comprising a throatbush  240  that attaches to the suction flange  244  of the pump  212  to provide a suction head, and an inlet sleeve  242  which is secured to the throatbush  240  by securement means, such as bolts. As depicted in  FIGS. 10 and 14 , the inlet sleeve  242  may be structured with port elements  248  into which sensor devices may be ported to monitor the fluid dynamics of the fluid and solids entering from the solids processing arrangement  214  into the suction inlet  218  of the pump, defined by the throatbush  240 , thereby enabling the monitoring and adjustment of the elements of the pump and submersible solids processing arrangement  214 . 
     The submersible solids processing arrangement  214  of this aspect is further structured with at least one vertically-oriented blade  294  that is positioned adjacent the arrangement of macerating members  250  and which is spaced away from the center point  292  of the submersible solids processing arrangement  214 . For example, vertically-oriented blades  294 , as seen in  FIGS. 10 and 16 , may be secured to the spacers or locating elements  258  along a surface  296  of the locating element  258  that is oriented toward the center point  292  of the submersible solids processing arrangement  214 . Consequently, the vertically-oriented blades  294  are positioned in proximity to the macerating member  250  so that any material lodged between the locating elements  258  and the adjacent macerating member  250  may be macerated. Vertically-oriented blades  294  may be provided on other structural elements of the solids processing arrangement  214 , such as the lifting frame  300 , as shown in  FIG. 10 . Breaker bars  298 , as seen in  FIG. 16 , may also be positioned about the center point  292  and in proximity to the macerating member  250  to provide further maceration of any solids that may become lodged between the macerating members  250  near the center point  292  of the solids processing arrangement  214 . 
     The solids processing arrangement  14  may further include at least one agitator arrangement  320  positioned adjacent to the solids processing arrangement  214  in proximity to the macerating members  250 . As illustrated in  FIGS. 10 and 11 , the agitator arrangement  320  may be positioned at an elevation below the submersible solids processing arrangement  214 . However, the agitator arrangement  320  may be positioned in any suitable proximity or position relative to the solids processing arrangement  214  which will facilitate the agitation and movement of fluid and solids toward the macerating members  250 . 
     The agitator arrangement  320  may comprise, in one embodiment, at least one arm  322  which extends radially outwardly from a support plate  324 . The support plate  324  is connected to a rotating shaft  326 , which is operatively connected to a drive means  328  that imparts rotation to the rotating shaft  326 , and likewise to the support plate  324  and arms  322 . The axis of rotation of the arrangement of arms may be parallel to the center point  292  of the submersible solids processing arrangement  214 , but may, in the alternative, be non-parallel to the center point  292  of the submersible solids processing arrangement  214 . 
     The drive means  328  may be any suitable device which can impart rotation to the arm or arms  322  of the agitator arrangement  320 , but may, most suitably, be a hydraulic motor. The hydraulic motor may be remotely monitored and controlled to allow the rotation of the arms to be increased, decreased or stopped. In certain embodiments, the support drive means  328  may be secured to and supported by the lower portion of the lateral beam  302 . 
     The agitator arrangement  320  may have one or more arms  322  that are connected to the support plate  324  in a manner that allows the arms  322  to move relative to the support plate  324 . Thus, as seen in  FIGS. 11, 13 and 17 , the rotating shaft  326  may, in one embodiment, extend through the support plate  324 , and may be configured with outwardly extending tabs  330 . The inward end  332  of each arm  322  is structured with opposing ears  334  that straddle the outwardly extending tab  330 , and are pivotally secured to the tab  330  by a pivot pin  336 . As constructed, each arm  322  is able to move upwardly and downwardly, as denoted by the arrow  340  ( FIG. 11 ), in a vertical plane that extends parallel to a plane in which a longitudinal line or axis defining the center point  292  lies. 
     The rotational speed of the agitator arrangement  320  may be varied depending on the conditions and material that is being pumped. The rotation of the agitator arms  322  is beneficial in providing shearing actions of solids in the fluid, and promotes motion of the fluid which facilitates the drawing in of fluid by the submersible solids processing arrangement  214 . To that end, the arms  322  may be constructed with edges that are sharpened to facilitate shearing of material, and may be configured with cutting elements. The position and inclusion of an agitator arrangement  320  also facilitates the avoidance of cavitation in the pump by enhancing flow of solids and fluid. 
     Agitation of the fluid and solids in the body of fluid may be accomplished by other means. For example, rather than providing an arrangement of arms  322  as described, the agitation arrangement may employ rotational screw or spiral-like devices that are rotatable to cause a stirring up and/or shearing of solids prior to entry into the submersible solids processing arrangement  214 . Alternatively, one or more sparger units  360  ( FIG. 10 ) may be positioned near the lower portion or lower plate  256  of the submersible solids processing arrangement  214 . The submersible solids processing arrangement  214  may be structured with both sparger  360  apparatus and an agitator arm arrangements. Other apparatus may provide equivalent agitation of the fluid and solids. 
     The pump and submersible solids processing arrangements  10  and  200  described herein may also be structured with a seal cartridge  400 , as shown in  FIGS. 18 and 19 , which effectively seals the pump shaft  232  from the pump casing  216 . As shown in  FIG. 19 , the seal cartridge  400  is positioned about the pump shaft  232 , and extends from proximate a back or frame plate  402  of the pump casing  216  to proximate an inboard set of bearings  404 . 
     As shown in  FIG. 18 , which depicts a portion of the seal cartridge  400  in position about the pump shaft  232 , the seal cartridge  400  generally comprises a cylindrical gland housing  410  that surrounds the pump shaft  232 . The gland housing  410  is structured to be connected to the bearing housing  234  by securement means, such as bolts  412 . The gland housing  410  is further structured to be connected to and supported by a shaft sleeve  414 . The shaft sleeve  414  surrounds the pump shaft  232  and is sealed thereagainst by an o-ring  418 . 
     The gland housing  410  is also structured to surround and house a series of lip seals  420  that are arranged and positioned between the gland housing  410  and the shaft sleeve  414 . An external lube port  422  is formed in the gland housing  410  through which a lubricating material, such as grease, may be provided to the lip seals  420 . The gland housing  410  further supports a stationary seal  426  that forms a seal face  428  with a rotating seal  430  that surrounds the shaft sleeve  414 . The stationary seal  426  is sealed, by an o-ring  434 , from the gland housing  410 . The rotating seal  430  is held in place by a retaining ring  438 , and is sealed from the retaining ring  438  by an o-ring  440 . A spring member  442  positions the rotating seal  430  between the shaft sleeve  414  and the retaining ring  438 . A Belleville or similar spring  446  and drive key  448  are supported by grooves in the shaft sleeve  414  and maintain the retaining ring  438  in position about the shaft sleeve  414 . 
     A slinger device  450  may be positioned adjacent the gland housing  410 , and is operably attached to the pump shaft  232  in a manner that allows the slinger device  450  to rotate about the rotational axis  452  of the pump shaft  232 . The slinger device  450  may be held in position by a support ring  454 . The rotating slinger device  450  is beneficial in moving fluid and solids away from the shaft sleeve  414  and lip seals  420 . 
     Additionally, each of the lip seals  420  has associated therewith a ring-shaped deflector device  456  which effectively operates to keep fluid and solids from infiltrating into the lip seals  420 , each of which is separated further by a spacer ring  458 . The seal cartridge  400  of the disclosure is especially effective in protecting the seal face  428  by virtue of the arrangement of series of lip seals  420  and deflectors  456 . The arrangement provides a heavy duty seal against infiltration of slurries by providing a serial arrangement of deflectors that keep slurry from infiltrating into the lip seals. Additionally beneficial to the seal cartridge arrangement is the application of increased lubrication pressure in the cartridge that prohibits infiltration of slurry into the lip seals  420 . 
     The operation of the pump and submersible solids processing assembly of the disclosure is described herein with reference to the embodiment shown in  FIG. 10 ; however, the same mode of operation is applicable to the alternative embodiments also described and illustrated herein. In operation, the pump and submersible solids processing arrangement  200  is lowered into a well, sump or body of fluid until the lower plate  254  of the support frame  252  becomes positioned at the desired depth in a body of fluid. The pump  212  is then placed into operation by causing the drive shaft  235  and pump shaft  232  to rotate, thereby causing rotation of the impeller  230 . As the impeller  230  rotates with increasing speed, suction pressure is created at the suction inlet  218  which, in turn, causes fluid in the sump or body of fluid to be drawn toward the submersible solids processing arrangement  214  in a direction generally perpendicular, or normal, to the center point  292  of the submersible solids processing arrangement  213  or the rotational axis  264  of the pump  212  and impeller  230 . 
     In one embodiment, suction imposed on the fluid by the rotating impeller causes the macerating members  250 , which are journalled within the support frame  252 , to rotate as fluid is drawn into the columnar space  228  ( FIG. 16 ) within the support frame  252  and between the arrangement of macerating members  250 . The solids entrained in the fluid are drawn through a processing zone  290  ( FIG. 3 ) defined between adjacent macerating members  250  and through the meshing macerating elements  280 , thereby being macerated (e.g., chopped, sliced, cut, crushed and/or ground) into smaller pieces of solid matter. The fluid and smaller pieces of solids are then drawn from the columnar space  228  into the inlet pathway  238  ( FIG. 11 ) and then into the impeller  230 , from where the fluid is forced into the volute  226  of the pump  212  and out the discharge outlet  220 . The rotating action of the agitator arrangements  320  further enhance the direction of fluid into the macerating members  250  as previously described. 
     In an alternative embodiment, the macerating members  250  may be driven to rotate, such as by applying drive means, such as operatively provided by drive devices  278 , to each macerating member  250 . 
     In another aspect, methods for processing and pumping fluid and solids entrained in the fluid comprise:
     providing a pump and submersible solids processing arrangement, comprising,   a pump having a casing, a suction inlet and a discharge outlet, and a submersible solids processing arrangement positioned in fluid communication with the suction inlet of the pump and being structured to macerate solids entrained in a fluid prior to entry of the fluid into the inlet of the pump;   positioning said pump in a source of fluid having entrained solids;   creating suction at said suction inlet of the pump by operation of the pump, thereby drawing fluid and the entrained solids into the submersible solids processing arrangement positioned in fluid communication with the suction inlet of the submersible pump;   operating said submersible solids processing arrangement to effect maceration of the solids entrained in the fluid as the fluid passes through the submersible solids processing arrangement and into the suction inlet of the pump; and   moving the fluid and macerated solids entrained in the fluid through the pump to the discharge outlet of the pump.   

     In the foregoing description of certain embodiments, specific terminology has been resorted to for the sake of clarity. However, the disclosure is not intended to be limited to the specific terms so selected, and it is to be understood that each specific term includes other technical equivalents which operate in a similar manner to accomplish a similar technical purpose. Terms such as “left” and right”, “front” and “rear”, “above” and “below” and the like are used as words of convenience to provide reference points and are not to be construed as limiting terms. 
     In this specification, the word “comprising” is to be understood in its “open” sense, that is, in the sense of “including”, and thus not limited to its “closed” sense, that is the sense of “consisting only of”. A corresponding meaning is to be attributed to the corresponding words “comprise”, “comprised” and “comprises” where they appear. 
     In addition, the foregoing describes only some embodiments of the inventions, and alterations, modifications, additions and/or changes can be made thereto without departing from the scope and spirit of the disclosed embodiments, the embodiments being illustrative and not restrictive. 
     Furthermore, inventions have been described in connection with what are presently considered to be the most practical and preferred embodiments. It is to be understood that the invention is not to be limited to the disclosed embodiments, but to the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the inventions. Also, the various embodiments described above may be implemented in conjunction with other embodiments, e.g., aspects of one embodiment may be combined with aspects of another embodiment to realize yet other embodiments. Further, each independent feature or component of any given assembly may constitute an additional embodiment.