Patent Publication Number: US-2016242611-A1

Title: Vacuum liquid separator and method for its use

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application claims priority to U.S. Provisional Patent Application No. 62/120,131, entitled “VACUUM WATER SEPARATOR METHOD AND APPARATUS,” filed on Feb. 24, 2015, the entire contents of which are hereby incorporated by reference for all purposes. 
    
    
     FIELD 
     The present disclosure relates generally to systems and methods for separating liquids from a vacuum filter. 
     BACKGROUND 
     Currently, a variety of vacuum cleaners capable of effectively picking up both wet and dry materials are available on the market. Such devices may be found in a variety of forms, but most generally comprise a large holding tank inclusive of vacuum unit mounted on the top of the tank. Dry or wet materials may then be drawn through a hose and into the holding tank during operation. These types of vacuum cleaners are commonly referred to as “wet/dry vacuums,” or “shop vacuums.” 
     Wet/dry vacuums typically include a vacuum unit comprising a motor operated blower for creating a negative pressure providing suction of debris into a tank. The debris captured in the tank may then be held at the bottom of the tank while air is exhausted through a filter and subsequently an exhaust port. 
     In a case of picking up dry material, it may be important for dust captured and routed into the tank of the wet/dry vacuum to not be blown into the air outside of the tank through the vacuum system&#39;s exhaust. In order to avoid such a situation, most wet/dry vacuums comprise some sort of filter mounted between the tank and the exhaust so as to contain dry dust contamination within the vacuum&#39;s tank. Common filters used in these types of vacuums may typically comprise a flat or pleated paper filter that is attached to the base of the suction creating vacuum unit at the top of the tank. 
     A common complaint among users of wet/dry vacuum systems is that the typical paper filters mentioned above may not be suitable for use with wet materials. For example, when the common wet/dry vacuum filters are exposed to water or just wet materials such as wet debris, the water may tend to wet the paper filters such that they are quickly rendered unusable under the pressures of typical vacuum operation. 
     The process of wet material pickup may be further complicated by a number of other factors. For example, while wet dirt and the like may be inclined to stay in the tank and not become mixed into the exhaust of the vacuum, the cleaning of mixed wet and dry materials without a filter in place may usually lead to dust being expelled from the exhaust. Additionally, in instances where only a liquid is being collected, the liquid may tend to become at least partially aerosolized and the aerosol may be exhausted from the vacuum unit. Another complication faced by typical wet/dry vacuum filters may be that most wet/dry vacuums include a cut-off valve in order to prevent liquid from being drawn through the vacuum unit in the event that the tank fills to capacity with liquid. However, these valves may engage at the last minute and may only serve as a last resort precaution. The nature of these cut-off valves may result in spilling or expelling some liquid from the vacuum cleaner. 
     There have been some attempts to address the issue of filters becoming wet and affecting the usage and operation of wet/dry vacuums such as providing a hydrophobic filter. One such example as shown in U.S. Pat. No. 5,783,086 employs a hydrophobic and air permeable filter material such as PTFE. However, the inventor herein has identified potential issues with such a filter. For example, the hydrophobic filters may be expensive to purchase and replace relative to their traditional paper counterparts. Expensive filters may not be well suited for wet/dry vacuum systems that are used regularly because all filters need to be replaced at some point. 
     SUMMARY 
     In order to address the issues noted above, a device for separating water or other liquids from a vacuum chamber and a method for its use are provided. 
     In some embodiments, the device may comprise a top cover portion and a tank or container. The cover and the container may form or define a sealed and air-tight chamber under negative pressure. The cover may comprise an output port and one or more input ports. The output port may be coupled to a negative pressure providing source such as a vacuum system via a hose or tube. 
     The input port(s) may be coupled to a head of a cleaning tool such as a vacuum cleaner adaptor or brush heads via a hose or tube in one example embodiment. Further, some embodiments may include an input port comprising an elongated extended member such as an extended perforated tube that extends inside the container from the cover. 
     The elongated member, in some example embodiments, may comprise one or more holes on a side face of the elongated member. The elongated member may serve to prevent liquid being sucked into the vacuum system that provides a negative pressure. The holes in the elongated member may further serve to avoid percolation problems within the container that may dampen or damage the filters provided on the vacuum system. In one embodiment, the one or more holes of the elongated member may be oriented such that they are directed away from the output port. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  illustrates a top-down view of a first embodiment of a cover component for a vacuum liquid separator. 
         FIG. 2  shows a top-down view of a cover component for a vacuum liquid separator including a manifold system, an input port and an output port. 
         FIG. 3  provides a front side profile view of the vacuum liquid separator cover and manifold assembly. 
         FIG. 4  shows a top-down view of a second embodiment of a cover component for a vacuum liquid separator. 
         FIG. 5  shows a top-down view of a second embodiment of a cover component for a vacuum liquid separator including an output port and an input port. 
         FIG. 6  illustrates a side profile view of a second embodiment of a vacuum liquid separator. 
         FIG. 7  illustrates a third embodiment of a cover component for a vacuum liquid separator. 
         FIG. 8  shows a barbed hose fitting member for a vacuum liquid separator in a front isometric view. 
         FIG. 9  illustrates a down tube for use with a vacuum liquid separator in a side profile view. 
         FIG. 10  shows a retaining ring for use in a vacuum liquid separator in a side profile view. 
         FIG. 11  shows a side isometric view of a two stage vacuum liquid separator. 
         FIG. 12  shows a top-down view of a two stage vacuum liquid separator. 
         FIG. 13  shows a side isometric view of a cover component for a two stage vacuum liquid separator. 
         FIG. 14  shows an embodiment of a single stage vacuum liquid separator. 
         FIG. 15  shows a top-down view of an embodiment of a single stage vacuum liquid separator. 
         FIG. 16  shows a side isometric view of a cover component for a single stage vacuum liquid separator. 
     
    
    
     DETAILED DESCRIPTION 
     The present description relates to a device and method for separating water or other liquids within the tank or container of a wet/dry vacuum system. The device and method may further be adapted to keep water or other liquid from dampening the vacuum filter which, in turn, may reduce the vacuum&#39;s efficiency and suction. 
     The device may be of further usefulness by keeping the vacuum chamber itself dry, which may enhance the vacuum motor&#39;s longevity due to less restrictive forces encountered by the vacuum system. 
     In one embodiment, the device may allow a shop or individual user the opportunity to use a typical or existing wet/dry vacuum in situations involving a large amount of liquid such as in liquid extraction from carpets during the process of carpet cleaning. In this way, a user may be able to perform duties that may have previously required multiple changes of the vacuum&#39;s tank and/or filter in a quick and efficient manner. 
     As an example, the liquid separator may comprise a cover inclusive of an output port, one or more input ports, and a manifold system coupled to the output port; at least one container or tank; and a vacuum source. The cover may rest atop one or more tanks and may be positioned inline between a standard wet/dry vacuum and the vacuum hose and/or extraction wand. The liquid separator may be used with or without an extraction wand as well as just a vacuum hose in order to pull water. 
     One embodiment of the vacuum liquid separator may comprise a two-stage system including two containers also referred to herein as “tanks” or “buckets.” Each tank may further include a cover which may comprise an output port for connection to a vacuum source, one or more input port, and an elongated member extending from the cover down into the tank. The elongated member also referred to herein as a “downpipe” or “diffuser pipe” may further include one or more holes to prevent liquid from breaching the negative pressure providing vacuum system. 
     In embodiments comprising a two-stage system, the use of two tanks may increase the capacity of the vacuum cleaner as a whole and may provide additional protection to the vacuum unit by preventing water from entering the vacuum itself. Additionally, since these embodiments incorporate two tanks, the second tank, referring to the tank downstream of the first relative to the flow supplied by the vacuum, may not need to be emptied as frequently as the main tank or other wet/dry vacuum systems comprising only a single chamber. 
     Turning now to  FIG. 1 , this figure illustrates a first example embodiment of a cover component  102  of the vacuum liquid separator  100 . In this embodiment, the cover component  102  may comprise a planar surface into which one or more holes  104  may be drilled. The hole(s)  104  drilled into the planar surface of the cover may provide for one or more of an input port, an output port or ports, and a manifold inclusive of a cross over tube as illustrated in subsequent figures. 
     In embodiments comprising more than one hole in the cover component, the holes may be substantially in line with one another. For example, in cases in which two holes are made, the centers of each hole may be aligned along a common central axis. It will be appreciated that embodiments provided herein may exhibit an even number of holes in cases where more than one hole is present in the cover component. However, other variations of the cover component such as cases in which the number of holes is odd are equally envisioned. 
     In embodiments comprising a two-stage system for example, the number of holes drilled into the cover component may be four or more. In this way, a cover component is provided enabling the inclusion of an input port, an output port, and a crossover tube connecting one tank or “stage” to another tank. 
     One example embodiment of the present disclosure may comprise a cover constructed of a ⅜ inch thick “cast” plexiglass roughly 13 inches wide and 26 inches long. The cover may comprise a substantially rectangular shape in at least one embodiment. This piece of plexiglass may necessitate cutting with a table saw or other suitable cutting medium from a standard 4 foot by 8 foot preformed sheet of plexiglass. 
     Once a cover component is cut out, one or more holes may then be cut into the plexiglass sheet. In one embodiment, four holes may be cut into the cover portion using a drill press with a hole saw or any other suitable hole drilling method. In one embodiment, the holes in the cover component may comprise a substantially round profile having roughly a 3 inch diameter. 
     As an example, the cuts made in the cover component may be made via cutting into a plexiglass sheet slightly deeper than half of the width of the plexiglass sheet. Once a cut has been made a little over halfway through the sheet, the sheet may then be turned over and the remaining material may be cut. In this way, a smoother finish substantially free of burrs or barbs may be achieved. 
     In one embodiment, the holes in the cover component may comprise a diameter of about 3 inches. Some embodiments may comprise holes that are equally spaced from the peripheral edge of the cover. Further, in some embodiments, the distance of the holes from the peripheral edge of the cover may be equal to the diameter of the holes. For example, in the embodiment illustrated in  FIG. 1 , the holes may comprise a 3 inch diameter wherein the center of each circular hole  104  may be about 3 inches from a side peripheral edge of the planar surface. The holes  104  in one embodiment may further be disposed at a distance of about 6.5 inches from a front or rear peripheral edge of the planar surface. Additionally, the center of each hole may be spaced horizontally apart from one another at a distance of about 7 inches. In the embodiment shown in  FIG. 1 , the center of each hole may further be spaced about 13 inches from one another such that two tanks may be provided below the cover component  102 . 
     With respect to  FIG. 2 , this figure shows a top-down view of a cover component  102  for a vacuum liquid separator  100  including a manifold system  200 , an input port and an output port. In one embodiment, the cover component  102  may comprise a planar surface including one or more holes  104  as illustrated in  FIG. 1 . 
     The manifold system  200  provided in  FIG. 2  may comprise a crossover tube  110  retained by two 90 degree elbow joints  116  connecting two holes  104  to each other. In this way, an exchange channel from one tank or stage to a second tank or stage may be provided. The 90 degree elbow joints  116  of the manifold system  200  may each additionally be coupled to an elongated member referred to herein as a downpipe (shown in  FIG. 3 ). 
     In order to couple the downpipes to the manifold system in one embodiment, once the holes  104  are cut, bulkhead fittings may be attached to the planar surface of the cover component  102  such that the bulkhead fittings fully traverse the planar surface. In this way, a seal on each of a top face and bottom face of the cover component  102  may be achieved. The bulkhead fittings may be positioned with a threaded extension facing upward through the planar surface of the cover component  102  such that a user may more easily observe a problem such as a leak if one were to occur. The orientation of the bulkhead fittings where the threads are directed upward and out of the vacuum chamber may further allow for a smaller portion of the bulkhead fittings to be present in the vacuum chamber which may increase the capacity of the chamber. 
     Once the bulkhead fittings are installed, each bulkhead fitting may then be coupled to the 90 degree elbow joints  116 . In one embodiment, the bulkhead fittings may be coupled to the elbow joints  116  via using a length of schedule 40 PVC piping that may be cut to fit the application and de-burred. The bulkhead fittings and the PVC pipe portions may then be primed and glued into place using PVC cement or another suitable adhesive. 
     In one embodiment, from the top of the cover component  102 , the coupled bulkhead fittings and PVC pipe portions may then be primed and glued before being pressed down halfway into the planar surface of the cover. In this way, an interface connecting the interior of the vacuum chamber to an exterior is provided. 
     Once the elbow joints  116  are secured into place in the cover component  102 , the crossover tube  110  may be attached to two of the 90 degree elbow joints  116  in a diagonal orientation. In one example embodiment, the crossover tube  110  bay comprise a 2 inch diameter and 11.5 inch long section of schedule 40 PVC pipe. If the section of PVC pipe used for the crossover tube  110  is cut to fit between two elbow joints  116 , the pipe may be de-burred prior to coupling to the elbow joints. In this way, a more reliable and effective seal may be established between the two components. 
     When coupling the crossover tube  110  to the elbow joints  116 , a type of fitting referred to as a slip-to-slip fitting may be used in at least one embodiment. The slip-to-slip fittings may be primed and glued into place on one side to the crossover tube  110  and on the other to a respective 90 degree elbow joint  116 . In one embodiment, the crossover tube may be connected to opposite corners of the cover component  102 . As one example, the elbow joints  116  and the crossover tube  110  may be assembled by gluing each component and sliding them together quickly while being pressed down onto their corresponding bulkhead fittings. 
     In an example embodiment in which four holes are present in the cover component  102 , two holes may be occupied by a manifold system  200  and the remaining two holes may comprise an input port  106  and an output port  108 . In order to be utilized as input and output ports, a slip to FNPT (Female National Pipe Thread) fitting may be placed into the void space of the 90 degree elbow joints  116 . The slip to FNPT fittings may then be secured using a primer and a suitable PVC adhesive compound. In one embodiment, the slip to FNPT fittings may be disposed on opposite ends of the cover  102  such that they face their respective end and are directed away from one another. It will be appreciated that the threading  112  of some components of the vacuum liquid separator are shown via a broken line in the figures. 
     Once the slip to FNPT fittings are secured within the elbow joints  116 , two barbed MNPT (Male National Pipe Thread) fittings  114  may be screwed into the FNPT fittings. The junction between the MNPT fittings and the FNPT fittings may further be reinforced in at least one embodiment via the use of Teflon tape. The two fittings may then be screwed together by hand since the fittings comprise threading  112  corresponding to one another and the Teflon tape may provide an air-tight fitting. 
     Turning now to  FIG. 3 , this figure provides a front side profile view of the vacuum liquid separator cover and manifold assembly. In this view, the downpipes  304  of the vacuum liquid separator are visible. The downpipes  304  may comprise one or more port holes  306  disposed along a front edge of the downpipe  304  relative to the cover component  102 . 
     In one embodiment, the downpipes  304  may be coupled to the cover  102  via a bulkhead fitting  302 . The bulkhead fitting  302  may fully traverse the planar surface of the cover component  102  such that an extension of the bulkhead including threading  112  may be directed upward relative to a ground surface and out of the vacuum chamber. The threaded  112  portion of the bulkhead fitting  302  may then be coupled to a manifold system  200 . The manifold system may comprise two 90 degree elbow joints  116  connected to one another via a crossover tube  110  in one embodiment. 
     In one embodiment, the downpipes  304  may comprise 2 inch diameter PVC pipe sections about 8 inches long. In some cases, the downpipe  304  sections may need to be cut and subsequently de-burred. In a further example embodiment, the downpipes  304  may comprise four 1 inch port holes  306  disposed along a front or rear face of the downpipe  304  relative to the positioning of the cover component  102 . Further, starting from one end of the downpipe  304 , a first port hole  306  may be drilled about 1.5 inches on center from the end of the PVC tube section. In an embodiment comprising more than one port hole  306 , the remaining holes may be drilled 1.5 inches on center upward along the pipe  304  in a straight vertical line. 
     In one embodiment, the drilling of port holes  306  may be performed using a drill press equipped with a 1 inch forstner bit for example. In the case in which a forstner bit is used to drill the port holes  306  into the downpipe  304 , the bit may allow for substantially smooth holes in which secondary de-burring may not need to be performed. In other embodiments, the drilling of port holes  306  may be completed via any other suitable method for drilling into PVC. 
     In order to secure the downpipes  304  to the cover  102 , side may be chosen to be a side common to each downpipe  304 . For example, in some embodiments, four holes  104  may be placed into the cover  102  and two of the holes may be occupied by a manifold system  200 , and the remaining two holes may be occupied by an input port and an output port. In some embodiments, the manifold system  200  may comprise one downpipe  304  and an input port may comprise a single downpipe  304 . Specifically, when viewing the vacuum liquid separator from the side, since the manifold system  200  comprises two holes connected to one another via crossover tube  110 ; two downpipes  304  may be installed on the same side of the cover component  102 . 
     Once a side has been chosen as the side common to both downpipes  304 , the ends of each downpipe  304  that will be attached to the bulkhead fittings  302  may be primed and glued to a portion of the bulkhead fitting  302  on an internal surface of the cover  102  directed toward the vacuum chamber. In one embodiment, the port holes  306  in the downpipes  304  may be oriented such that they face the nearest edge of the planar surface of the cover component  102 . 
     After one downpipe  304  is coupled to the cover component  102 , a second downpipe may be installed on the same side of the cover  102 . The two downpipes  304  may correspond to two different and distinct tanks or containers. In this way, a two or more stage water separation device may be provided. 
     In one embodiment, the cover component  102  may comprise a manifold system  200  that connects two holes of a four hole cover in a diagonal manner such that only one end of the manifold system comprises a downpipe  304 . The remaining two holes of the cover  102  in such an embodiment may comprise an input port  106  which may then be connected to a vacuum hose or wand. The input port  106  may serve as the fluid inlet side. The final remaining hole of this embodiment of a vacuum liquid separator may additionally include an output port  108  that may be coupled to a vacuum system such as a typical wet/dry vacuum. 
     An example technical effect of providing port holes  306  in the downpipes  304  that may be directed toward the nearest side of the planar surface of the cover component  102  is that the amount of airborne or aerosolized water that may migrate over to the vacuum side of the device may be reduced. Once both downpipes are coupled to the cover component, the direction and orientation of the port holes  306  may then determine the direction of flow. 
     Turning now to  FIG. 4 , this figure shows a top-down view of a second embodiment of a cover component  402  to be used with a vacuum liquid separator. The cover component  402  in one embodiment may comprise a substantially planar and circular shape constructed of plexiglass or another suitable and durable material. Further, the cover component  402  may additionally comprise one or more holes  404  fully traversing the planar surface of the cover. In this way, a chamber may be formed below the cover component which may further include an input port and an output port. 
     It will be appreciated that components common to the various different embodiments provided in the figures may be indicated as such through the use of common numeric notation. For example, the 90 degree elbow joints  116  may be identified across various embodiments provided by the figures using the same numeric notation,  116 . In this way, common features may be more easily recognizable. 
     In one example of the embodiment provided in  FIG. 4 , the cover component  402  may be positioned over a container or tank and may be positioned inline between a standard wet/dry vacuum and the vacuum hose or extraction wand. In one embodiment, the cover component may be placed atop a standard 5-7 gallon bucket or a similar tank configuration. The vacuum liquid separator may be used with an extraction wand or without a wand in order to pick up wet materials or liquids. It will be appreciated that the use and positioning of the vacuum liquid separator may serve to keep water or other liquids from dampening or damaging the vacuum filter. A dampened or damaged vacuum filter may result in a loss or reduction in suction and may further decrease the overall efficiency of the vacuum. 
     The vacuum liquid separator may be further useful in that the liquid separator may keep the vacuum chamber, defined by the inner surface of the cover component and a tank, dry which may improve the longevity of the vacuum motor due to less restrictive forces encountered by the vacuum unit. The separator may allow a shop or individual user to use an existing or typical wet/dry vacuum to perform liquid extractions such as carpet cleaning with fewer unnecessary tank changes and without damaging or dampening the filter. 
     One example of the cover component embodiment illustrated in  FIG. 4  may comprise a substantially round profile featuring two holes  404  fully traversing the plane of the cover  402 . The planar surface of the cover, i.e. the surface into which holes may be cut, may be constructed of a 13 inch diameter and 0.25 inch thick piece of “cast” plexiglass. In some cases, the piece of plexiglass to be used as the cover component  402  may be routed from a standard 4 foot by 8 foot sheet of plexiglass. 
     In such an embodiment, once the main 13 inch diameter circle is cut, two additional circular holes  404  may be cut into the cover. In one embodiment, the two holes in the plexiglass cover may be cut using a drill press and a 3 inch hole saw bit. It will be appreciated that holes of variable sizes may also be cut into the cover component depending on the size of the hose fittings and/or adapters to be used with the vacuum cleaner. 
     In one embodiment, holes  404  in the cover component may be formed by cutting just over halfway through the planar surface of the cover  402  and then turning it over and cutting through the remainder of the surface from the other side. In this way, a substantially smooth finish of the holes  404  may be achieved. In one example embodiment, the holes may be 3 inches in diameter and may be 3 inches on center from the edge of the cover. In one embodiment, the cover component  402  may comprise a 13 inch diameter round shape and two 3 inch holes may be positioned opposite one another such that their centers are about 7 inches apart. 
     With respect to  FIG. 5 , this illustration shows a top-down view of a second embodiment of a cover component  402  for a vacuum liquid separator  400  including an output port  108  and an input port  106 . 
     The cover component  402  may further be configured to use as a vacuum liquid separator via the inclusion of at least one downpipe. The downpipe may further be coupled to the cover component via the use of bulkhead fittings which may be more clearly visible in  FIG. 6 . The downpipe may then be coupled to a 90 degree elbow joint  116 . Further, the downpipe and 90 degree elbow coupling may occupy one of the two provided holes  402 . 
     In some embodiments, only a single downpipe may be provided in single stage liquid separators. In this way, an input port  106  coupled to a downpipe may be provided such that an output port  108  may be connected to communicate directly with the vacuum unit. By providing a downpipe on the input port  106 , the output port  108  which may be coupled to the vacuum system may be protected against splashing liquids and/or aerosolized liquids. 
     Turning now to  FIG. 6 , this figure illustrates a side profile view of the embodiment provided in  FIG. 5 . In this view, the downpipes  304  of the vacuum liquid separator are visible. The downpipes  304  may comprise one or more port holes  306  disposed along a front edge of the downpipe  304  relative to the cover component  402 . 
     In one embodiment, the downpipes  304  may be coupled to the cover  402  via a bulkhead fitting  302 . The bulkhead fitting  302  may fully traverse the planar surface of the cover component  402  such that an extension of the bulkhead including threading  112  may be directed upward relative to a ground surface and out of the vacuum chamber. The threaded  112  portion of the bulkhead fitting  302  may then be coupled to a 90 degree elbow joint  116  via a FNPT to slip fitting. 
     Once the two holes are cut in one embodiment, two slip to slip bulkhead fittings  302  may be attached to the cover component  402 . The bulkhead fittings  302  may then be positioned with their threaded portions facing upward relative to a ground surface and out through the cover  402 . In this way, it may be possible for a user to more easily observe a problem such as a leak if one were to occur. Additionally, the treaded portion of bulkhead fittings may comprise a longer extension and the opposite end may be substantially shorter such that its placement on the interior of the vacuum chamber may serve to slightly increase the tank&#39;s capacity. 
     Once the bulkhead fittings  302  are coupled to the cover component  402 , two small extensions of schedule 40 PVC pipe may be coupled to the bulkhead fitting  302 . If the portions of the PVC pipe to be used must be cut, the sections may then be de-burred to ensure a sufficient adhesion. In one example, the PVC pipe portions and the bulkhead fitting on the interior of the vacuum chamber, as defined by the interior of the containers or tanks and an interior surface of the cover component  402 , may be primed and glued into place. As a further example embodiment, PVC pipe sections may be coupled to the portion of the bulkhead fittings  302  that extend upward through the cover component  402 . 
     In such an embodiment, from the top of the cover, the PVC pipe portions may be primed, glued, and subsequently pressed down about halfway into the bulkhead fitting  302 . Next, two 90 degree elbow joints  116  may be coupled to the bulkhead fitting via gluing the elbow joints  116  to the PVC extensions coupled to the upward facing threaded  112  portion of the bulkhead fitting  302 . 
     In one embodiment, the 90 degree elbow joints  116  may comprise a slip to FNPT fitting. In order to couple such an elbow joint to a barbed fitting  114  for use with a vacuum hose or extraction wand, both the barbed fitting  114  and the threads  112  of the 90 degree elbow joint  116  may be primed and glued to each other. 
     As an example, some embodiments may comprise an input port  106  and an output port  108 . In such embodiments, it may be expedient to provide 90 degree elbow joints  116  facing each other in a parallel manner such that that hoses connecting to a vacuum system or a vacuum hose may not become entangled. 
     In some examples, the barbed fittings  114  coupled to the 90 degree elbow joints as shown in  FIG. 6 , may comprise a barb to MNPT fittings. In embodiments comprising the barb to MNPT fittings, Teflon tape may be used along the threads  112  to provide an airtight seal. When using Teflon tape along the threading  112 , the tightness of the components may only be hand tight since the Teflon tape may fill gaps between the threads  112  and may provide a substantially airtight seal. 
     In one embodiment, the downpipe  304  may comprise an elongated PVC pipe member that may be cut from stock and de-burred. In one example, the downpipe  304  may be 8 inches in length and may comprise one or more roughly one inch holes disposed within an external face of the tube. One embodiment may comprise 4 port holes  306  disposed along an exterior face of the pipes. In order to provide such an embodiment, a first hole may be drilled about 1.5 inches on center from one end of the pipe  304 . The remaining three holes may then be drilled about 1.5 inches on center up along the pipe in a straight vertical line. 
     As an example, the port holes  306  of the downpipe  304  may be cut into the downpipe via a drill press and a forstner bit although any other suitable method of cutting may be applied to this embodiment. The use of a forstner bit however, may provide substantially smooth port holes  306  that may be further substantially free of burrs or sharp extensions. 
     Once the downpipe  304  has been configured to comprise one or more port holes  306 , the downpipe  304  may then be coupled to the portion of the bulkhead fitting  302  directed downward toward the interior of a vacuum chamber. This coupling may be performed via priming and gluing the bulkhead fitting and the downpipe before inserting the downpipe into the slip fitting portion of the bulkhead fitting  302 . 
     Once the downpipe  304  is coupled to the bulkhead fitting  302 , the port holes  306  of the downtube may be oriented such that they may face the nearest edge of the cover component  402 . After the downpipe  304  is coupled to the cover component  402 , the direction of flow may be determined. Specifically, the 90 degree elbow joint  116  coupled to the downtube  304  may comprise an input port which may be used for fluid input. The other 90 degree elbow joint  116  which may not be coupled to a downpipe may then be coupled to a vacuum system. The 90 degree elbow joint coupled to the vacuum system may therefore comprise an output port. In this way, the possibility of liquid or aerosolized liquid coming into contact with the vacuum system may be reduced. 
     Turning now to  FIG. 7 , this figure shows an additional example embodiment of a cover component  700  to be used with a vacuum liquid separator. In this example, the construction as described above with reference to  FIGS. 1-6  may be simplified. For example, the components illustrated in  FIGS. 8-10  may be used in conjunction with one another and may be coupled to one another such that a complex installation/manufacturing process may be removed. 
     With respect to  FIG. 8 , a barbed hose fitting member for a vacuum liquid separator is shown. This component may be used in at least one embodiment of the vacuum liquid separator with the downpipe shown in  FIG. 9 . In this way, the manufacturing/installation process may be simplified slightly. Further, in one embodiment, the components of  FIGS. 7-10  may comprise slip to slip fittings such that a simple coupling between the elements may be performed using a primer and glue. 
     In  FIG. 9 , an example downpipe configuration is provided. This example embodiment of a downpipe includes a 90 degree elbow joint that may be integral to the downpipe itself. In this way, the cover component of the vacuum liquid separator may be more easily constructed. 
     As shown in  FIG. 10 , a retaining ring  1000  may be used to couple components of the vacuum liquid separator. In one embodiment, the retaining ring  1000  may be used to couple the downpipe of  FIG. 9  to the cover component provided in  FIG. 7 . Additionally, the retaining ring  1000  of  FIG. 10  may be used to couple the barbed fitting  800  of  FIG. 8  to the end of the 90 degree elbow of the downpipe illustrated in  FIG. 9 . In this way, the number of components comprising the cover component of the vacuum liquid separator may be reduced. 
     Turning now to  FIG. 11 , this figure shows a further example embodiment of a vacuum liquid separator  1100  comprising two stages. It will be appreciated that as used herein, the term “stage” or “stages” may be used to refer to the number of tanks provided for retaining captured material. Here it may be visible that the downpipes  304  may be positioned, at least in one embodiment, along a common side of the cover component  1102 . 
     The embodiment illustrated in  FIG. 11  may further comprise one or more port holes disposed along a side face of the downpipes  304 . In such embodiments however, the holes may be positioned such that they may be directed toward the closest most longitudinal edge of the planar surface of the cover component. In this configuration, it may not be possible to view the port holes of the downpipes  304  from the perspective provided in  FIG. 11 . 
     As mentioned above, some embodiments of the vacuum liquid separator may comprise more than one tank for retaining captured material. Such embodiments may be referred to herein as multi-stage or two-stage liquid separators. 
     A multi-stage vacuum liquid separator  1100  is illustrated in a top-down view in  FIG. 12 . This embodiment may comprise a cover component  1102  for a vacuum liquid separator  1100  including a manifold system  200 , an input port  116  and an output port  118 . In one embodiment, the cover component  1102  may comprise a planar surface including one or more holes into which 90 degree elbow joints  116  may be inserted. 
     The manifold system  200  provided in  FIG. 12  may comprise a crossover tube  110  retained by two 90 degree elbow joints  116  connecting two holes to each other. In this way, an exchange channel from one tank or stage to a second tank or stage may be provided. The 90 degree elbow joints  116  of the manifold system  200  may each additionally be coupled to an elongated member referred to herein as a downpipe (shown in  FIG. 13 ). 
     In  FIG. 13 , a side isometric view of an embodiment of a vacuum liquid separator  1100  is provided. The embodiment illustrated in  FIG. 13  may be the same embodiment illustrated in  FIGS. 11 and 12 . In  FIG. 13 , it may be clearly visible that the downpipes  304  provided in at least one embodiment may share a common side of the cover component. 
     In other words, the downpipes  304  of the vacuum liquid separator  1100  may fully traverse the cover component  1102 . The downpipes  304  may further be arranged along a common plane such that their profiles are substantially parallel to one another and with respect to the longitudinal sides of the cover component. 
       FIG. 14  illustrates an additional example embodiment of a vacuum liquid separator  1400  comprising a single stage defined by a single tank for retaining captured material. In this embodiment, more than one input port  1406  may be provided. In one embodiment, the additional input port(s) may allow for connection of one or more vacuum liquid separators in series or along with other vacuum systems or components. 
     In one embodiment, the output port  1408  of the vacuum liquid separator may not include a downpipe  304 . In such an embodiment, the output port may serve to provide additional protection to the vacuum filter during operation. Since the input ports  1406  comprise downpipes  304  inclusive of one or more port holes  306 , any liquid or wet material may be pulled downward via the forces of gravity into the bottom of one or more tanks. As negative pressure is achieved and/or maintained within the chamber defined by the one or more tanks, any liquid may rest along a bottom edge of the tank with a substantial distance between the 90 degree elbow joints  116  and the liquid. 
     The output port  1408  may further be releasably coupled to a vacuum system and therefore any additional distance away from liquid or aerosolized liquids may serve to protect the vacuum system. Additionally, the input ports  1406  may be coupled to other vacuum liquid separators or other vacuum systems that may not require keeping a filter dry for example. 
     As illustrated in  FIG. 15 , one or more embodiments of a vacuum liquid separator may comprise more than one input port  1406  and an output port  1408 . The output port  1408  may be coupled to a vacuum system in at least one embodiment. Further, the output port  1408  may not include a downpipe, but downpipes may be coupled to the input ports  1406 . In this way, the flow going to or toward the vacuum system may be further separated from liquid or aerosolized liquid and the input ports  1406  may serve to provide one or more flows of liquid or damp material. In providing an output port  1408  that does not comprise a downpipe, the vacuum system providing the negative pressure and/or the vacuum filter may be protected from excess liquid contact. 
     In  FIG. 16 , the downpipes  304  are shown coupled to each of two provided input ports  1406 . The downpipes may serve to reduce the amount of water that splashes up inside the one or more tanks. Further, the port holes  306  that line a side face of the downpipes  304  may be directed toward an interior surface of the tank. In this way, any liquid that comes through the input port  1406  may be contained, at least to some degree, prior to reaching the bottom of the tank. This precaution of directing the port holes  306  away from the output port  1408  may further server to reduce an amount of liquid that may splash up or aerosolize within the vacuum chamber. 
       FIGS. 1-16  show example configurations with relative positioning of the various components. If shown directly contacting each other, or directly coupled, then such elements may be referred to as directly contacting or directly coupled, respectively, at least in one example. Similarly, elements shown contiguous or adjacent to one another may be contiguous or adjacent to each other, respectively, at least in one example. As an example, components laying in face-sharing contact with each other may be referred to as in face-sharing contact. As another example, elements positioned apart from one another with only a space there-between and no other components may be referred to as such in at least one example. As yet another example, elements shown above or below one another, at opposite sides relative to one another, or to the left or right of one another may be referred to as such, relative to one another. Further, as shown in the figures, a topmost element or point of an element may be referred to as a “top” of the component and a bottommost element or point of an element may be referred to as a “bottom” of the component in at least one example. 
     As used herein, top/bottom, upper/lower, above/below, may be relative to a vertical axis of the figures and may be used to describe positioning of elements of the figures relative to one another. As such, elements shown above other elements are positioned vertically above the other elements in one example. As yet another example, shapes of the elements depicted within the figures may be referred to as having those shapes (e.g., such as being circular, straight, planar, curved, rounded, chamfered, angled, or the like). Further, elements shown intersecting one another may be referred to as intersecting elements or intersecting one another, in at least one example. Further still, an element shown within another element or shown outside of another element may be referred to as such in at least one example. 
     It will be appreciated that the configurations and/or approaches described herein are exemplary in nature, and that these specific embodiments or examples are not to be considered in a limiting sense, because numerous variations are possible. The subject matter of the present disclosure includes all novel and nonobvious combinations and sub combinations of the various features, functions, acts, and/or properties disclosed herein, as well as any and all equivalents thereof. 
     The following claims particularly point out certain combinations and sub combinations of the present subject matter regarded as novel and nonobvious. These claims may refer to “an” element or “a first” element or the equivalent thereof. Such claims should be understood to include incorporation of one or more such elements, neither requiring nor excluding two or more such elements. Other combinations and sub combinations of the disclosed features, functions, elements, and/or properties may be claimed through amendment of the present claims or through presentation of new claims in this or a related application. Such claims, whether broader, narrower, equal, or different in scope to the original claims, also are regarded as included within the subject matter of the present disclosure.