Patent Publication Number: US-10316846-B2

Title: Hybrid radial axial cutter

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to U.S. Provisional Patent Application Ser. No. 62/174,226 entitled HYBRID RADIAL AXIAL CUTTER, filed Jun. 11, 2015, which is incorporated herein by reference. 
    
    
     BACKGROUND 
     A cutter/grinder pump system is used as a wastewater conveyance system that has the ability to reduce the size of solid matter that may be entrained in the target fluid. Waste from water-using systems in commercial and household settings, such as appliances (e.g., toilets, bathtubs, washing machines, etc.) and other components, can be transported to a holding tank in which the grinder pump is disposed. Upon activation, the pump can be used to cut and/or grind the solids entrained fluid waste into a fine slurry, and pump it to a treatment system handling conduit (e.g., central processing or septic system). A grinder pump and cutter pump are different from a typical effluent pump in that a cutter or grinder assembly is installed that reduces solids prior to entry into the pump. 
     SUMMARY 
     This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key factors or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. 
     As provided herein, cutter/grinder system that can be engaged with a pump to facilitate reduction of solids that may be entrained in a target fluid. An example cutter/grinder system may cut and/or grind solid matter such that the reduced sized matter can be converted in a more efficient and effective manner, for example, by using less energy to provide similar performance as a higher energy consuming system. For example, an exemplary cutter/grinder system may utilize both an axial cutting operation and a radial cutting operation, comprising a rotary cutter system that has both radial and axial cutting edges. 
     In one implementation, a cutter system for a pump can comprise a stationary cutter plate configured to operably couple with a pump in a stationary disposition at an intake area of the pump. The stationary cutter plate can comprise a plurality of intake ports respectively comprising a stationary cutting edge. Intake ports can comprise a first set of intake ports disposed around a perimeter portion of the stationary cutter plate; and a second set of intake ports disposed at an interior portion of the stationary cutter plate. Further, the cutter system can comprise a stationary cutter wall fixedly engaged with the stationary cutter plate in a substantially transverse direction from the perimeter of the intake side of the stationary cutter plate. The stationary cutter wall can comprise a wall cutting edge disposed in substantial alignment with the respective first set of intake ports. Additionally, the stationary cutter plate can comprise a rotating cutter configured to operably couple with a rotating shaft of the pump. The rotating cutter can comprise a plurality of cutting arms projecting radially from a central hub portion of the rotating cutter, an axial cutting edge disposed on respective cutting arms substantially parallel to the intake surface of the stationary cutter plate, and a radial cutting edge disposed on a distal end of respective cutting arms substantially parallel to an interior side of the stationary cutter wall. 
     To the accomplishment of the foregoing and related ends, the following description and annexed drawings set forth certain illustrative aspects and implementations. These are indicative of but a few of the various ways in which one or more aspects may be employed. Other aspects, advantages and novel features of the disclosure will become apparent from the following detailed description when considered in conjunction with the annexed drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       What is disclosed herein may take physical form in certain parts and arrangement of parts, and will be described in detail in this specification and illustrated in the accompanying drawings which form a part hereof and wherein: 
         FIG. 1  is a component diagram illustrating a top view of an example implementation of an exemplary hybrid axial radial cutter assembly. 
         FIG. 2  is a component diagram illustrating a side view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 3  is a component diagram illustrating a perspective view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 4  is a component diagram illustrating a bottom view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 5  is a component diagram illustrating a top view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 6  is a component diagram illustrating a bottom view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 7  is a component diagram illustrating a perspective view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 8  is a component diagram illustrating a top view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 9  is a component diagram illustrating a top perspective view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 10  is a component diagram illustrating a bottom perspective view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 11  is a component diagram illustrating a bottom view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 12  is a component diagram illustrating a side view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 13  is a component diagram illustrating a bottom view of an example environment where one of more portions of one or more components described herein may be implemented. 
         FIG. 14  is a component diagram illustrating an example environment where one of more portions of one or more components described herein may be implemented. 
         FIG. 15  is a component diagram illustrating a cut-away view of an example environment where one of more portions of one or more components described herein may be implemented. 
         FIG. 16  is a component diagram illustrating an example implementation of an alternate hybrid axial radial cutter assembly. 
         FIG. 17  is a component diagram illustrating an example implementation of one or more portions of one or more components described herein. 
         FIG. 18  is a component diagram illustrating an example implementation of one or more portions of one or more components described herein. 
         FIG. 19  is a component diagram illustrating an example implementation of one or more portions of one or more components described herein. 
         FIG. 20  is a component diagram illustrating an example implementation of one or more portions of one or more components described herein. 
         FIG. 21  is a component diagram illustrating an example implementation of one or more portions of one or more components described herein. 
         FIGS. 22A and 22B  are component diagrams illustrating various views of an example implementation of an exemplary alternate hybrid axial radial cutter assembly. 
         FIG. 23A  is a component diagram illustrating a top view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 23B  is a component diagram illustrating a bottom view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 23C  is a component diagram illustrating a side-top perspective view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 24A  is a component diagram illustrating a top view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 24B  is a component diagram illustrating a bottom view of an example implementation of one or more portions of one or more components described herein. 
         FIG. 24C  is a component diagram illustrating a side view of an example implementation of one or more portions of one or more components described herein. 
     
    
    
     DETAILED DESCRIPTION 
     The claimed subject matter is now described with reference to the drawings, wherein like reference numerals are generally used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the claimed subject matter. It may be evident, however, that the claimed subject matter may be practiced without these specific details. In other instances, structures and devices may be shown in block diagram form in order to facilitate describing the claimed subject matter. 
     A cutter/grinder system may be devised that can be operably coupled with a fluids pump to facilitate degradation of solids, in order to improve pumping of fluids that may comprise entrained solids. That is, for example, an example cutter/grinder system, described herein, may cut and/or grind solid matter mixed with the fluid to a smaller size, such that the reduced-sized matter can be effectively pumped with the fluid. Further, an example cutter/grinder system, described herein, may perform such cutting/grinding in a more efficient and effective manner than previously available systems, for example, by using less energy to provide similar performance as a higher energy consuming system. In one implementation, the exemplary cutter/grinder system may utilize an axial cutting operation and a radial cutting operation. As an example, the system can comprise a rotary cutter that has both radial and axial cutting edges, and a stationary cutting portion that has both radial and axial cutting edges. In this example, rotation of the rotary cutter allows its radial and axial cutting edges to operably engage with the corresponding radial and axial cutting edges of the stationary cutter. In this way, an improved solids size reduction may be obtained. 
     In one aspect, a radial portion of the hybrid cutter/grinder system can be used to grind solids found in typical wastewater into a fine slurry, which may be preferable to help with downstream pumping and flow, and to reduce equipment maintenance issues. Further, in this aspect, an axial portion of the hybrid cutter/grinder system can be used to cut stringy solids and other forms of non-human waste in to pieces small enough to pass through a small diameter discharge pipe, which may be smaller than those found in systems without a cutter/grinder pump, for example. As an example, it may be the small diameter (e.g., typically one and one quarter inches) of the downstream pipe that gives the grinder pump its up-front capital cost advantages over a typical gravity and large pump lift station. In this aspect, in one implementation, the combination of the radial and axial portions in the hybrid cutter/grinder system may provide for the preferred particle size to produce a desired slurry of solids, while reducing the size of stringy solids without the typical clogging issues that often accompany them. 
       FIGS. 1-4  are component diagrams illustrating various views of an example implementation of a cutter/grinder system  100 , as described herein. In this implementation, the cutter/grinder system  100  can comprise a stationary cutter  102  and a movable cutter  104 . The stationary cutter  102  can comprise a perimeter wall  106  and a base plate  108 . In some implementations, the perimeter wall  106  and base plate  108  may be integral (e.g., integrally formed), may be fixedly engaged (e.g., fastened together), or may be selectably coupled (e.g., to each other, or separately to a pump). Further, the perimeter wall  106  can extend in a transverse direction from the base plate  108 , around the perimeter of the base plate  108 . In this implementation, the movable cutter  104  can comprise a plurality of radial arms  110  and a hub portion  112 , from which the radial arms  110  extend radially. 
     In one implementation, the movable cutter  104  can be configured to rotate within a space formed by the perimeter wall  106  and base plate  108 . In this implementation, the rotating movable cutter  104  can provide a cutting and/or grinding action in combination with a stationary cutter, for example, providing a radial cutting and/or grinding action where the perimeter wall  106  and radial end of the radial arms  110  interact; and an axial cutting and/or grinding action where the base plate  108  and leading edge of the radial arms  110  interact. That is, for example, the exemplary system  100  may provide both a radial and axial cutting/grinding action for solids entrained in a fluid. 
     With continued reference to  FIGS. 1-4 ,  FIGS. 5-7  are component diagrams illustrating various views of a portion of the cutter/grinder system  100 , as described herein. In this implementation, the stationary cutter  102  can comprise a first set of intake ports  114  (e.g., perimeter intake ports) disposed around the perimeter of the stationary cutter&#39;s base plate  108 . Further, the stationary cutter  102  can comprise a second set of intake ports  116  (e.g., interior intake ports) disposed at an interior portion of the base plate  108 . In one implementation, the stationary cutter  102  can be disposed at an intake portion of a pump, such as a wastewater pump. In this implementation, the first set of intake ports  114  and/or the second set of intake ports  116  can be configured to be conduits for fluid (e.g., wastewater) pumped into the pumping system. 
     Further, at least a portion of the respective intake ports from the second set of intake ports  116  can comprise a base intake port cutting edge  526  that is configured to provide a stationary, axial cutting edge on the base  102 . For example, in combination with a rotating cutting arm (e.g.,  110  of  FIG. 1 ), the base intake port cutting edge  526  can provide a shearing, scissor-like cutting action on solid material that may be drawn to the intake port  116 . That is, for example, the pump may draw the fluid comprising the solid matter toward its intake area, and at least a portion of the solids may enter one or more of the interior intake ports  116 . In this example, the rotating cutting arm can create a shearing action with the base intake port cutting edge  526  to cut, chop, and/or grind the solid matter into a smaller size so that it can more easily enter the interior intake ports  116 , and be less likely to create clogging issues. 
     In one implementation, as illustrated in  FIGS. 4 and 6 , the respective interior intake ports  116  may comprise a frustoconical shape, for example, where the top of the frustum shape is disposed on the intake side of the base plate  108 , and the bottom of the frustum is disposed at the outlet side of the base plate  108 . As an example, having the top of the frustum disposed at the site of the intake port cutting edge  526  may provide a more acute cutting edge angle. In this way, for example, the intake port cutting edge  526  may provide an improved cutting edge, while the larger diameter of the outlet side of the frustum provides for improved fluid flow (e.g., comprising solids). 
     Additionally, a perimeter wall of the stationary cutter  102  can comprise an inside portion  522  (e.g., interior side of wall). In one implementation, the inside portion of the wall  522  can comprise a radial cutting edge  524  (e.g., cutting edge of perimeter intake port) at the respective first set of intake ports  114 . In this implementation, respective radial cutting edges  524  can be disposed orthogonally from the base plate  108 . For example, in this orientation (e.g., parallel to the wall, or transverse from the surface of the base plate  108 ) they can create a radial cutting surface. In this example, in combination with a terminal end of a rotating cutting arm, the radial cutting edge  524  may provide a second shearing, scissor-like cutting action on solid material that is drawn to the intake port  114 , or may migrate to the inside portion of the wall  522  through centrifugal force provided by the rotating cutting arm. That is, for example, the pump may draw the fluid with solid matter toward its intake area, and at least a portion of the solids may enter one or more of the perimeter intake ports  114 . In this example, the terminal end of the rotating cutting arm can create a shearing action with the wall intake port cutting edge  524  to cut, chop, and/or grind the solid matter into a smaller size. 
     As illustrated in  FIGS. 5-7 , the example stationary cutter  102  can comprise one or more channels  528 , disposed on the intake side of the base plate  108 . In one implementation, a channel  528  can be configured to facilitate translation of fluid and/or solids from a central area (e.g., the hub portion  112 ) toward the inside portion of the wall  522 . Further, in one implementation, a channel may be disposed between the hub portion  112  and the inside portion of the wall  522 , such as leading to respective perimeter intake ports  114 . Additionally, one or more interior intake ports  116  may be disposed along a channel  528 . In this implementation, a channel leading from an interior intake port  116  may facilitate movement of sheared solids toward inside portion of the wall  522 . In one implementation, one or more or the channels may terminate at a perimeter intake port  114 . In this way, for example, solids that are translated along a channel  528  toward the perimeter intake port  114  may be subjected to the radial shearing action of the radial cutting edge  524  combined with the terminal end of a rotating cutting arm. In one implementation, a direction, length and design of the respective channels  528  may be determined based on use conditions of the cutter/grinder system  100 , for example, a speed of the rotating arms, size of solids, expected head pressure, pipe diameters, fluid characteristics, and other conditions. 
     In one implementation, the example stationary cutter  102  can comprise one or more sub-planar cut-outs  530 , disposed on an intake side of the perimeter wall  106 . In this implementation, the respective sub-planar cut-outs  530  may be configured to mitigate clogging of the cutter/grinder system  100 , and/or to improve flow of a fluid comprising solids through the intake ports  114 ,  116 . Further, in one implementation, the location and size of the sub-planar cut-outs  530  may provide improved solids shearing/grinding action results. As an example, a size, location, number and depth of a sub-planar cut-outs  530  may vary, depending on the expected application (amount and type of solids, type of fluid, pipe size, head pressure, etc.). In one implementation, as illustrated in  FIGS. 5-7 , a sub-planar cut-out  530  may be disposed at a location of one or more perimeter intake ports  114 , on the intake side of the perimeter wall. 
     With continued reference to  FIGS. 1-7 ,  FIGS. 8-12  are component diagrams illustrating various views of a portion of the cutter/grinder system  100 , as described herein. In this implementation, the movable cutter  104  can comprise keyway  832  that is configured to selectably engage with a corresponding key coupled with the shaft of a pump. As an example, the shaft of a pump may comprise a key that is configured (e.g., in shape and size) to slidably engage with the keyway  832  at the cutter hub  112 . In this way, in this example, a rotation of the shaft may result in a rotation of the movable cutter, such as during pump operation. 
     In one implementation, the movable cutter  104  can comprise a first cutting edge  834 , comprising an axial cutter (e.g., a leading cutting edge), disposed on one or more of the cutter arms  110 . The first cutting edge  834  can be configured to engage with solid matter, for example, in combination with the base axial cutting edge  526 , in order to reduce the size of the solid matter. As an example, in combination with the base intake port cutting edge  526 , the first cutting edge  834  of the cutter arm  110 , can provide a shearing, scissor-like cutting action on solid material that may be drawn to the intake port  116  of the base plate  108  of the stationary cutter  102 . That is, for example, the pump may draw the fluid comprising the solid matter toward its intake area, and at least a portion of the solids may enter one or more of the interior intake ports  116  of the base plate  108 . In this example, the first cutting edge  834  can create a cutting or shearing action with the base intake port cutting edge  526  to cut, chop, and/or grind the solid matter into a smaller size so that it can more easily enter the interior intake ports  116  and be less likely to create clogging issues for the pump. 
     In one implementation, the first cutting edge  834  can comprise serrations  838 . As an example, a serrated cutting edge can comprise a plurality of smaller points of contact with the solid matter subjected to the shearing action. For example, having a smaller contact area at any one time, than a straight edge, allows the applied pressure at each point of contact to impart a greater force to the subject matter. Further, the curved nature of the serrated edges  838  can provide a sharper angle to the material being cut. This may result in an improved shearing action in conjunction with the curved shaped of the base intake port cutting edge  526 , for example, particularly as the cutter arm  110  rotates around the base plate  108 . That is, for example, as the cutter arm  110  rotates, a first portion of a serration  838  may contact a solid engaged with the base intake port  116 . In this example, as the cutter arm continues to rotate, the different portions of the serration  838  contact the solid at different angles. Additionally, as the cutter arm  110  rotates, the serration  838  can traverse the base intake port  116 , providing improved shearing action in conjunction with the base intake port cutting edge  526 . This type of action may improve cutting/grinding performance of the example grinder/cutter assembly  100 . 
     In one implementation, the movable cutter  104  can comprise a second cutting edge  836 , comprising a radial cutter, disposed on a distal end of one or more of the cutter arms  110 . The second cutting edge  836  can be configured to engage with solid matter, for example, in combination with the wall intake port cutting edge  524  (e.g., base radial cutting edge), in order to reduce the size of the solid matter. As an example, in combination with wall intake port cutting edge  524 , the second (e.g., radial) cutting edge  836  of the cutter arm  110 , can provide a shearing, scissor-like cutting action on solid material that may be drawn to the perimeter intake port  114  of the base plate  108  (e.g., and wall  106 ) of the stationary cutter  102 . That is, for example, the pump may draw the fluid comprising the solid matter toward its intake area and at least a portion of the solids may enter one or more of the perimeter intake ports  114  of the base plate  108 , or be translated toward them by the rotating action of the cutter arms  110 . In this example, the second cutting edge  836  can create a shearing action with the wall intake port cutting edge  524  to cut, chop, and/or grind the solid matter into a smaller size so that it can more easily enter the perimeter intake ports  114  and be less likely to create clogging issues for the pump. 
     In one or more implementations, the second (e.g., radial) cutting edge  836  can comprise varying sizes, and/or shapes; and may be disposed on one or more of the cutting arms  110 . As an illustrative example, as illustrated in  FIGS. 8-12 , a second cutting edge  836  may comprise a first size and shape  836   a  (e.g., long and narrow), a second size and shape  836   b  (e.g., medium length and thick), and a size length and shape  836   c  (e.g., short and medium width) (e.g., and a fourth, etc.). Further, in one implementation, the second cutting edge  836  can be disposed at various portions of the distal end of the cutter arm  110 , and/or at different cutting angles, as illustrated. For example, a radial cutting edge can comprise a first cutting angles, and a second, different cutting angle (e.g., and a third, and a fourth, etc.). In this way, in this example, engaged solids may be operated upon from different angles to provide a more effective cutting/shearing action. 
     As an illustrative example, as illustrated in  FIG. 12 , second cutting edge  836   a  is disposed such that a top portion of the second cutting edge  836   a  can interact with higher portions of the perimeter wall  106  (e.g., and therefore higher portions of a wall cutting edge  524 ). In this example, a second cutting edge  836   c  is disposed at a lower position on the distal end of the cutter arm  110  (e.g., and at a different cutting angle), which may allow it to interact with lower portions of the perimeter wall  106  (e.g., and therefore lower portions of a wall cutting edge  524 ). Additionally, a second cutting edge  836   b , in  FIG. 9 , is disposed at a middle position on the distal end of the cutter arm  110 , which may allow it to interact with middle portions of the perimeter wall  106 . In this way, for example, having varied second cutting edge  836  positions may provide for a more effective cutting/grinding of solid matter, such as by impacting the matter at various locations (e.g., and at different cutting angles) during movable cutter  104  rotation. 
     As illustrated in  FIGS. 8-12 , in one implementation, a cutter arm  110  of the movable cutter  104  can comprise a trailing edge  840  and a relief portion of the trailing edge  1046  (e.g., in  FIGS. 10 and 11 ). A shape, size and/or angle of disposition of the trailing edge  840  can be configured to mitigate a cavitation effect that may result from the movable cutter  104  rotating through a fluid. Further, in one implementation, the relief portion of the trailing edge  1046  may also be configured to mitigate a cavitation effect. That is, for example, a lower pressure may form behind the cutter arm  110  as it moves through the fluid (e.g., at the trailing side of the cutter arm). In this example, the lower pressure can allow fluid cavitation to occur, which may result in damage to the material (e.g., metal) forming the cutter arm  110 . In this implementation, a transition with a fillet, comprising a desired size, transition angle, and/or shape, can help mitigate separation of the fluid, thereby mitigating creation of a vacuum behind the cutter arm  110 . The size of the relief portion of the trailing edge  1046  may also facilitate in reducing the separation of fluid. 
     Additionally, the relief portion of the trailing edge  1046  can be configured to reduce potential contact area between the axial cutter edge  834  of the cutter arm  110  and the base plate  108 . As an example, clearances between the axial cutter edge  834  and the base plate  108  can be reduced to accommodate a desired solids reduction performance level. In this example, the relief portion of the trailing edge  1046  can facilitate in creating a reduced axial cutter edge  834  footprint, which may come into contact with the surface of the base plate  108  during operation. In this way, for example, a reduction in potential friction may result, allowing the cutter/grinder assembly  100  to perform more efficiently on a pump. Further, the relief portion of the trailing edge  1046  can be used to reduce the amount of material used to manufacture the movable cutter  104 , for example, making it easier to manufacture, lighter, and more efficient. 
     As illustrated in  FIGS. 2, 8, 9 and 12 , in one implementation, the movable cutter  104  can comprise a slinger component  220 . A slinger  220  can be disposed on one or more cutter arms  110 , at the distal portion. The slinger  220  can be configured to engage with larger solids, and/or flexible solids (e.g., cloth, cloth-like material, plastics, string, etc.) and transition them away from the path of the inlet. As an example, larger solids and flexible solids can cause clogs in the cutter assembly  100  and/or may wrap around the movable cutter  104 , reducing the ability of the cutter assembly  100  to perform appropriately. In one example, the slinger  220  can catch flexible solids and sling them away from the intake area of the pump, before they become entangled with the cutter assembly  100 . In this way, portions of these type of solids may be moved away from the cutter assembly continually, for example, until they have been reduced in size to a point where they may be drawn though the intake ports  114 ,  116 . 
     As illustrated in  FIGS. 9, 10 and 12 , in one implementation, the movable cutter  104  can comprise a weighting component  942 . Further, in one implementation, as illustrated in  FIGS. 10 and 11 , the movable cutter  104  can comprise a cutout portion  1044 . The weighting component  942  and/or the cutout portion  1044  may be configured to facilitate weight distribution for the movable cutter  104 . As an example, a slinger  220  disposed at the distal end of a cutter arm  110  may result in weight displacement of the movable cutter  104  distributed outward from the hub area  112  toward the location of the slinger  220 . In this example, a weight distribution that extends out from the hub area  112  may result in an undesirable operation, such as wobbling during rotation, and/or additional forces causing stress on the portions of the cutter subjected to the additional weight (e.g., the cutter arm  110  comprising the slinger  220 ). That is, for example, having the center of weight distribution as close the center of the hub area  112  as achievable can provide for smoother operation of the movable cutter  104 . In this example, this distribution can result in mitigated chances of damage to portions of the movable cutter  104  through additional stresses. Further, the distribution may provide for prolonged life for a bearing associated with the shaft of the pump, and can generally increase the mean time between repairs on the system, and/or pump. 
     In one implementation, the cutout portion  1044  can be disposed on a bottom portion of the distal portion of the cutter arm  110  on which the slinger  220  is disposed. As illustrated in  FIGS. 10 and 11 , the cutout portion  1044  may be sized and/or shaped in accordance with sound engineering practices to accommodate the desired weight distribution for the intended uses of the movable cutter  104 . That is, for example, an amount of material removed from the cutter arm  110  by the cutout portion  1044  may provide a reduction in weight on the cutter arm  110  on which the slinger  220  is disposed. Further, as illustrated in  FIGS. 9, 10 and 12 , the weighting component  942  can be disposed on a cutter arm  110  that is radially opposed to the cutter arm on which the slinger  220  is disposed. That is, for example, the additional material provided by the weighting component  942  may transition the center of weight distribution toward the hub area  112 , thereby counteracting the additional weight provided by the slinger  220  to the distal end of the cutter arm  110 . 
       FIGS. 13-15  illustrate an example environment where one or more portion of one or more systems, described herein, may be implemented.  FIGS. 13-15  are illustrative examples of an alternate implementation of a cutter assembly  1300  (e.g., similar to cutter assembly  100  of  FIGS. 1-4 ) operably engaged with an exemplary pump  1350 . As described above, the exemplary pump  1350  may comprise a wastewater pump that is configured to pump wastewater from a first location to a second location, such as from a residential or commercial wastewater system to a municipal waste collection system. In this example, the exemplary pump  1350  can comprise an intake area  1352  that is configured to receive fluid to be pumped, and that may pass through the alternate cutter assembly  1300 . As an example, the intake area  1352  may comprise a cavity that facilitates creation of an area of lower pressure while the pump is in operation, which can cause fluids to be drawn toward the intake area  1352 . Further, the intake area may be sized such that a desired fluid head pressure can be maintained during pumping, in association with expected fluid line elevation change, length and size. 
     In this implementation, the alternate cutter assembly  1300  can be operably coupled with the pump  1350  in the intake area. The alternate cutter assembly  1300  can comprise an alternate stationary wall cutter  1302  (e.g., similar to perimeter wall  106  of  FIGS. 1-7 ), which may be sized in accordance with expected use conditions. That is, for example, the alternate stationary wall cutter  1302  can project transversely from the bottom wall of the pump  1350  into the intake area  1352 . The height of the alternate stationary wall cutter  1302  may be determined by the size of the intake area, and/or related to and expected head pressure versus flow curve for the pump&#39;s intended use. Further, the alternate cutter assembly  1300  can comprise an alternate stationary base cutter plate  1306  (e.g., similar to base plate  108  of  FIGS. 1, 5 and 7 ). Additionally, the alternate cutter assembly  1300  can comprise an alternate movable cutter  1304  (e.g., similar to  104  of  FIGS. 1-3 and 8-10 ). 
       FIGS. 16-21  illustrate one or more portions of one or more components for an alternate cutter assembly  1300 . In this implementation, as illustrated in  FIG. 16 , the alternate cutter assembly  1300  can comprise the alternate stationary wall cutter  1302 , the alternate stationary base cutter plate  1306 , and the alternate movable cutter  1304 . For example, much like the cutter assembly  100  of  FIGS. 1-4 , the alternate movable cutter  1304  can be operably coupled with a shaft of a pump, resulting in rotation of the alternate movable cutter  1304  within a stationary cutter formed by the alternate stationary wall cutter  1302 , the alternate stationary base cutter plate  1306 , which can be non-movably engaged with the pump (e.g., force fit, fastened, threaded, etc.). 
     As illustrated in  FIGS. 17-21 , the stationary cutter can comprise a separate alternate stationary wall cutter  1302  component and an alternate stationary base cutter plate  1306  component. In one implementation, these components can be non-movably engaged with each other, and/or with the pump, such as by a force fitting, fastening means, or other non-movable engagement. The alternate stationary wall cutter  1302  can comprise a plurality of alternate wall intake ports  1714  (e.g., similar to perimeter intake ports  114  of  FIGS. 1-7 ), which can respectively comprise an alternate wall cutting edge  1724  (e.g., similar to cutting edge of wall intake ports  524  of  FIGS. 5-7 ). Further, the alternate stationary wall cutter  1302  can comprise one or more alternate sub-planar depressions (e.g., similar to sub-planar cutouts  530  of  FIGS. 5 and 7 ). 
     The alternate stationary base cutter plate  1306  can comprise a plurality of alternate interior plate intake ports  1716  (e.g., similar to interior intake ports  116  of  FIGS. 1 and 3-7 ), which can respectively comprise an alternate base cutting edge  1726  (e.g., similar to cutting edge of base intake ports  526  of  FIGS. 5-7 ). In one implementation, as illustrated in  FIG. 21 , respective interior plate intake ports  1716  can comprise a frustoconical shape  2138 , for example, where the port opening forms a frustum. As described above, this shape may provide a sharper cutting angel for the alternate base cutting edge  1726 . In one implementation, the base cutter plate  1306  can comprise a base cutter extension (not pictured), which can be associated with the one or more alternate interior plate intake ports  1716 . The base cutter extension can be configured to provide an extended cutting channel that may collect and force solids into the associated interior plate intake port  1716 . For example, the base cutter extension can be sized and shaped to facilitate solids collection, and can provide a larger cutting edge (e.g., than the alternate base cutting edge  1726  alone) for the shearing action provided by an alternate cutter arm  1734 . Further, the base cutter plate  1306  can comprise a plurality of perimeter base ports that are respectively configured to align with a corresponding alternate wall intake port  1714 . Additionally, the base cutter plate  1306  can comprise one or more alternate channels  1728  (e.g., similar to channels  528  of  FIGS. 5-7 ). 
     As illustrated in  FIGS. 16, 18 and 19 , the alternate movable cutter  1304  can comprise the alternate hub area  1712 , which can be configured to receive (e.g., and engage with) at least a portion of the pump shaft. The alternate movable cutter  1304  can comprise one or more alternate cutter arms  1710  (e.g., similar to cutter arm  110   FIGS. 1, 3, 4, and 8 ), respectively comprising an alternate axial cutter edge (e.g., similar to the first cutting edge  834   FIGS. 8-12 ). Further, the alternate movable cutter  1304  can comprise an alternate radial cutter edge (e.g., similar to the second cutting edge  836   FIGS. 8-12 ). Additionally, the alternate movable cutter  1304  can comprise one or more alternate slinger components  1620 . In one implementation, an example, movable cutter  1304  can comprise at least two alternate slingers  1620 , respectively disposed on a distal portion of alternate cutter arms  1710 , where the respective cutter arms  1710  are disposed in a same axis passing through the hub area  1712 . In this way, for example, the weight distribution may not be substantially affected, as substantially a same amount of weight may be added to the respective cutter arms  1710 , on a same axis. 
       FIGS. 22A, 22B, 23A, 23B, 23C, 24A, 24B, and 24C  are component diagrams illustrating an exemplary alternate cutter/grinder assembly  2200  that can be used in a fluids pump system. In this implementation, the example assembly  2200  comprises a stationary cutter base  2202  and a rotating cutter  2204 . The stationary cutter base  2202  comprises a stationary cutter plate  2208  and a stationary cutter wall  2206 . The stationary cutter plate  2208  is configured to operably couple with an intake area of a pump (e.g.,  1352  of pump  1350  in  FIG. 13 ), such as by using a retaining ring (e.g.,  1454  of  FIG. 14 ) and fasteners (e.g.,  1456  of  FIG. 14 ), for example. In this implementation, the stationary cutter plate  2208  can comprise a plurality of intake ports, comprising a first set of plate intake ports  2214  and a second set of plate intake ports  2216 . In the implementation, the first set of plate intake ports  2214  may be disposed around a perimeter portion of the stationary cutter plate  2208 . Further, the second set of plate intake ports  2216  may be disposed in an interior portion of the stationary cutter plate  2208 . 
     In this implementation, in the example assembly  2200 , the stationary cutter wall  2206  can be fixedly engaged (e.g., fastened, welded, bonded, integrally formed, etc.) with the stationary cutter plate  2208 , where the wall  2206  is projecting in a substantially transverse direction from the perimeter of an intake side (e.g.,  1352 ) of the stationary cutter plate  2208 . In this implementation, the stationary cutter wall  2206  can comprise a wall intake port (e.g., a radial intake port) disposed in substantial alignment with the respective first set of plate intake ports  2214 . Additionally, one or more of the respective wall intake ports can comprise a wall cutting edge  2324  (e.g., radial cutting edge). 
     In the example assembly  2200 , with reference to  FIGS. 13-15 , a rotating cutter  2204  can be configured to engage with a rotating shaft  1358  of the pump  1350 , for example, such that rotation of the shaft  1358  can result in rotation of the rotating cutter  2204 . In one implementation, the rotating cutter can comprise a cutter hub  2212  that is configured to selectably engage with the shaft of a pump, for example, for removal and replacement of the cutter  2204  in a pump (e.g.,  1350 ). In one implementation, the movable cutter  104  can comprise keyway  2432  that is configured to selectably engage with a corresponding key coupled with the shaft  1358  of the pump  1350 . As an example, the shaft  1358  of a pump  1350  may comprise a key that is configured (e.g., in shape and size) to slidably engage with the keyway  1358  at the cutter hub  2212 . In this way, in this example, a rotation of the shaft may result in a rotation of the movable cutter, such as during pump operation. 
     The rotating cutter  2204  can comprises a plurality of cutting arms  2210  (e.g., two or more) that project radially from a central hub portion  2212  of the rotating cutter  2204 . The respective cutting arms  2210  can comprise an axial cutting edge  2434  (e.g., first cutting edge) and a radial cutting edge  2436  (e.g., second cutting edge). In one implementation, the axial cutting edge  2434  can be disposed at a leading edge of the cutting arm  2210 , and be configured to provide a cutting action in operation with a stationary plate cutting edge  2326  (e.g., stationary axial cutting edge) disposed on one or more of the respective second set of plate intake ports  2216  (e.g., axial intake port). Further, the radial cutting edge  2436  can be disposed on a distal end of the cutting arm  2210 , and be configured to provide a cutting action in operation with one or more of the wall cutting edges  2324 . 
     In one implementation, one or more of the second set of plate intake ports  2216  can respectively comprise an ellipse shape (e.g., circle or oval shaped), and/or an elongated ellipse shape (e.g., elongated circle and/or ellipse). In this way, for example, the elongated portion of the intake port  2216  can provide a longer cutting edge with the axial cutting edge  2434  of the cutting arm  2210 , thereby improving the cutting action acting on fluid entrained solids. Further, in one implementation, the second set of plate intake ports  2216  can be disposed on the stationary cutter plate  2208  in a pattern configured to provide efficient and effective solids cutting/shearing action. In another implementation, the second set of plate intake ports  2216  can be disposed on the stationary cutter plate  2208  substantially random alignment. For example, a random alignment may allow for multiple and varied interaction with fluids entrained solids between the axial cutting edge  2434  of the cutting arm  2210  and the second set of plate intake ports  2216 , such as with the stationary plate cutting edge  2326 . 
     In one implementation, the second set of plate intake ports  2216  can be disposed in a generally radial alignment on the stationary cutter plate  2208  between the hub portion  2212  and the perimeter  2206 . For example, an elongated intake port  2216  can be aligned radially in order to provide for a longer cutting action between the axial cutting edge  2434  of the cutting arm  2210  and the intake port  2216  while the cutting arm  2210  rotates around the stationary cutter plate  2208 . Further, a radially aligned intake port  2216  can allow for improved and more efficient fluid flow radially from the hub portion  2212  out to the wall  2206 . In this way, the first set of intake ports  2214  may receive a portion of the fluid intake. 
     In one implementation, the stationary cutter plate  2208  can comprise one or more channels  2328  that are respectively, fluidly coupled with at least one of the second set of plate intake ports  2216 . Further, the one or more channels  2328  can be respectively, fluidly coupled with at least one of the first set of plate intake ports  2216 . As an example, the channel  2328  can be configured to facilitate translation of fluid and/or solids from a central area (e.g., the hub portion  2212 ) toward the inside portion of the wall  2206 . Further, in one implementation, a channel may be disposed between the hub portion  2212  and the inside portion of the wall  2206 , such as leading to respective perimeter intake ports  2214 . Additionally, one or more interior intake ports  2216  may be disposed along a channel  2328 . In this implementation, a channel leading from an interior intake port  2216  may facilitate movement of sheared solids toward inside portion of the wall  2206 . In one implementation, one or more or the channels may terminate at a perimeter intake port  2214 . In this way, for example, solids that are translated along a channel  2328  toward the perimeter intake port  2214  may be subjected to the radial shearing action of the radial cutting edge  2434  combined with the terminal end of a rotating cutting arm  2210 . In one implementation, a direction, length and design of the respective channels  2328  may be determined based on use conditions of the cutter/grinder system  2200 , for example, a speed of the rotating arms  2210 , size of solids, expected head pressure, pipe diameters, fluid characteristics, and other conditions. 
     In one implementation, the stationary cutter wall  2206  can comprise one or more sub-planar cut-outs  2330  that are disposed on the intake side of the stationary cutter wall  2206 . The one or more sub-planar cut-outs  2330  can be fluidly coupled with at least one wall intake port  2214 . As an example, the respective sub-planar cut-outs  2330  may be configured to mitigate clogging of the cutter/grinder system  2200 , and/or to improve flow of a fluid comprising solids through the intake ports  2214 ,  2216 . As an example, a location and size of the sub-planar cut-outs  2330  can provide for improved solids shearing/grinding action results. For example, a size, location, number and depth of a sub-planar cut-outs  2330  may vary depending on an expected application of the assembly  2200  (e.g., amount and type of solids, type of fluid, pipe size, head pressure, etc.). 
     In one implementation, the one or more of the respective wall intake ports  2214  can comprise a major arc shape, where the wall cutting edge  2324  is disposed at a trailing point of the major arc shape. For example, as illustrated in  FIG. 23A , the shape of the perimeter wall intake port  2214  comprises a major arc (e.g., where two points on a circle define two arcs, a major arc and a minor arc, when the points are not directly across from each other). That is, for example, a major arc comprises greater than a one-hundred and eighty degrees of a circle. In this implementation, the trailing point (e.g., the second point of the port  2214  addressed by the radial cutting edge  2436  when the rotating cutter  2204  is rotating) can comprise the wall cutting edge  2324 . In this way, for example, the major arc shape of the wall intake ports  2214  can provide a more acute cutting edge for the wall cutting edge  2324  than be provided by slits or half-circle shaped slots. For example, the acute shape provided by the major arc shape of the wall cutting edge  2324  can improve the cutting/shearing action between the wall cutting edge  2324  and the radial cutting edge  2436 . 
     In one implementation, one or more of the radial cutting edges  2436  can comprise a first cutting angle and a second cutting angle. For example, the radial cutting edge  2436  can comprise a different cutting angle (e.g., first, second, third, fourth, etc.). In this way, in this example, engaged solids entrained in a fluid may be operated upon from different angles to provide a more effective cutting/shearing action. In this way, for example, having varied cutting angles and/or positions may provide for a more effective cutting/grinding of solid matter, such as by impacting the matter at various locations (e.g., and at different cutting angles) during rotating cutter  2204  rotation. 
     In one implementation, the respective cutting arms  2210  can comprise a serrated surface  2438  disposed at the leading side, which can provide a serrated axial cutting edge  2434 . As an example, a serrated cutting edge can comprise a plurality of smaller points of contact with the solid matter, entrained in the fluid, subjected to the shearing action. For example, having a smaller contact area than a straight edge allows applied pressure at each point of contact to impart a greater force to the subject solids. Further, the curved nature of the serrated edges  2438  can provide a sharper angle to the material being acted upon. In this example, this may result in an improved cutting/shearing action in conjunction with the shape of the interior intake port cutting edge  2326 , for example, particularly as the cutter arm  2210  rotates around the base plate  2208 . 
     Additionally, the rotating cutter can comprise a relief portion  2446  that is disposed at a trailing edge of one or more of the cutting arms  2210 , and configured to mitigate a cavitation effect. For example, a shape, size and/or angle of disposition of the trailing edge  2440  can be configured to mitigate a cavitation effect that may result from the movable cutter  2204  rotating through a fluid. That is, for example, a lower pressure may form behind the cutter arm  2210  as it moves through the fluid (e.g., at the trailing side of the cutter arm). In this example, the lower pressure can allow fluid cavitation to occur, which may result in damage to the material (e.g., metal) forming the cutter arm  2210 . Altering the shape of the trailing edge  2440 , such as by using the relief portion  2446 , and/or a shape, size, and placement of an underside  2444  of the cutting arm  2210 , can help mitigate this lower pressure behind the cutter arm  2210 , thereby mitigating potential damage to the cutter arm  2210 . 
     In one aspect, a method for using a pump, comprising a solids cutting/shearing assembly/system, can be devised. In one implementation, in this aspect, a method can comprise installing a pump in a system for transporting a fluid that comprises a mixture of fluids and solids (e.g., a wastewater system). In this implementation, the pump can comprise a stationary cutter that is operably coupled with an intake end of the pump. In this implementation, the stationary cutter can comprise a perimeter wall projecting in a substantially transverse direction from the intake side of the pump, where the wall comprising a plurality of perimeter intake ports, respectively comprising a radial cutting edge. Further, the stationary cutter can comprise a plurality of interior intake ports disposed on a base of the stationary cutter, where the plurality of interior intake ports respectively comprising an axial cutting edge. 
     In this implementation of an exemplary method, the pump can additionally comprise a movable cutter engaged with a rotating shaft of the pump in operable engagement with the stationary cutter and can be configured to rotate to engage with the solids. The movable cutter can comprise two or more cutting arms that are projecting radially from a central hub of the rotating cutter. Further, the movable cutter can comprise a first cutting edge that is disposed on a leading side of respective cutting arms, and can be configured to provide a cutting action in combination with one or more of the axial cutting edges. The movable cutter can also comprise a second cutting edge that is disposed on respective cutting arms, and can be configured to provide a cutting action in combination with one or more of the radial cutting edges. 
     In this implementation, the example method may also include placing the pump in a condition that allows it to be activated in a manner that provides a reduction in a size of the solids in the fluid for pumping. For example, the pump, comprising the cutter assembly, can be placed in use at a wastewater system, and activated to provide cutting, grinding and or shearing of solids entrained in fluid disposed in the wastewater system. 
     The word “exemplary” is used herein to mean serving as an example, instance or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous over other aspects or designs. Rather, use of the word exemplary is intended to present concepts in a concrete fashion. As used in this application, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless specified otherwise, or clear from context, “X employs A or B” is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, then “X employs A or B” is satisfied under any of the foregoing instances. Further, at least one of A and B and/or the like generally means A or B or both A and B. In addition, the articles “a” and “an” as used in this application and the appended claims may generally be construed to mean “one or more” unless specified otherwise or clear from context to be directed to a singular form. 
     Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims. Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Of course, those skilled in the art will recognize many modifications may be made to this configuration without departing from the scope or spirit of the claimed subject matter. 
     Also, although the disclosure has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The disclosure includes all such modifications and alterations and is limited only by the scope of the following claims. In particular regard to the various functions performed by the above described components (e.g., elements, resources, etc.), the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the disclosure. 
     In addition, while a particular feature of the disclosure may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms “includes,” “having,” “has,” “with,” or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term “comprising.”