Abstract: A pulper for circulating a fibrous stock suspension. The pulper includes at least one screen, having a screen surface which is provided with screen openings, and over which a rotor passes. The rotor is formed by a rotor head, to which a plurality of rotor blades are attached on the outer circumference. The rotor circle of the screen, which is passed over by the rotor wings, includes a plurality of bar-shaped elevations. In the process, pulping is to be improved, while wear is to be minimized, in that the angle of intersection between the working edge of the rotor blades pointing in the direction of rotation and the shear edge of the elevations pointing counter to the direction of rotation does not decrease radially outwardly.

Abstract: A sewage system component spray assembly is attached at a predetermined height above pumps in the interior of the component and has at least one nozzle for spraying liquid downwardly and generally tangential to a center of the sewage system component. Operation of the nozzle causes the liquid to disperse floating material on the sewage surface and creating a rotational flow around the center to direct such material to the pumps.

Abstract: A sewage system component spray assembly is attached at a predetermined height above pumps in the interior of the component and has at least one nozzle for spraying liquid downwardly and generally tangential to a center of the sewage system component. Operation of the nozzle causes the liquid to disperse floating material on the sewage surface and creating a rotational flow around the center to direct such material to the pumps. The source of the sprayed liquid may be internal to the sewage system component.

Abstract: A pump having a cutting wheel (20) and a pre-cutter (26) driven by a shaft portion (24) that projects axially from the cutting wheel (20) and has a plurality of wings (28) that extend radially from the shaft portion (24), wherein the wings (28) differ in their axial arrangement on the shaft portion (24).

Abstract: A system and method that automatically transfer liquid manure from an intermediate holding receptacle to a lagoon involves a common pump for both agitating the liquid manure in and pumping the liquid manure from the receptacle. A pump motor, first valve, second valve and directable agitation nozzle of the pump are controlled by an electronic controller. The electronic controller switches on the pump motor, ensures that the first valve is closed and ensures that the second valve is open when the receptacle is full, directs the nozzle to at least two different locations in the receptacle to permit liquid manure to be redirected to the at least two different locations to agitate the liquid manure for a predetermined period of time, and opens the first valve after the predetermined period of time to permit pumping of the liquid manure from the receptacle to the lagoon.

Abstract: The present invention is a pump used for applications where a solid is present in wastewater and other liquids that requires cutting and reduction in size so as to pass the solid through the inlet to the outlet of the pump. The pump has a pump casing with an inlet and an outlet formed therein. A drive unit rotates a drive shaft extending axially through the pump casing to an impeller and a cutter bar. The pump is further configured with a radial cutter ring assembly positioned adjacent the cutter bar and the inlet providing a shredding cutting action of solids between the rotating cutter bar sliding past a radial cutter ring assembly held stationary, e.g. cutting blades formed in an edge of the cutter bar rotate across an internal surface of the radial cutter ring assembly.

Abstract: The present invention is a pump used for applications where a solid is present in wastewater and other liquids that requires cutting and reduction in size so as to pass the solid through the inlet to the outlet of the pump. The pump has a pump casing with an inlet and an outlet formed therein. A drive unit rotates a drive shaft extending axially through the pump casing to an impeller and a cutter bar. The pump is further configured with a radial cutter ring assembly positioned adjacent the cutter bar and the inlet providing a shredding cutting action of solids between the rotating cutter bar sliding past a radial cutter ring assembly held stationary, e.g. cutting blades formed in an edge of the cutter bar rotate across an internal surface of the radial cutter ring assembly.

Abstract: A grinder pump basin system is provided which includes a basin; a cover plate; a bracket secured to the cover plate; and a grinder pump with cutter plate with openings and a cutter blade secured to the bracket above a bottom surface of the basin. The bracket includes a front portion, which prevents waste water from interacting adversely with the grinder pump when it enters the basin. A discharge system for the grinder pump is secured to an outlet of the grinder pump and includes a discharge pipe and a flexible discharge coupling. Flow directional jets are also provided in an elbow of the pump discharge system to direct waste water and solids away from the grinder pump.

Abstract: A screw-type centrifugal pump with scissoring back cutters and having a housing with an intake opening and an outlet opening, both in fluid communication with an internal chamber, and an impeller assembly positioned within the chamber, is disclosed. Generally speaking, the impeller assembly has a hub having a back shroud and being attached to a rotatable pump shaft, with an impeller attached to the hub. An insert cutter positioned on a surface of the hub shroud opposite the impeller includes a cutting edge configured for shearing operation, while a stationary back plate having a surface adjacent to and facing the hub shroud includes a cutting rib having a cutting edge configured for shearing operation. The insert cutter and cutting rib work jointly to create a cutting action as the hub rotates in the chamber.

Abstract: A method for operating a grinder pump station and inhibiting the likelihood of operation of a grinder pump assembly under at least one of a run dry condition and a blocked condition includes providing a wattmeter circuit operably connected to the grinder pump assembly and measuring real power using the wattmeter circuit during operation of the grinder pump assembly to process sewage received in a tank and discharge the processed sewage from the tank. The grinder pump assembly is automatically turned off based on the real power (e.g., average value of the product of instantaneous values of voltage and current over time) measured by the wattmeter circuit due to the at least one of a run dry condition and a blocked condition.

Abstract: A food waste processing apparatus is disclosed. In the food waste processing apparatus according to the embodiment of the present invention, after food waste is dehydrated by a centrifugal force within the upper drum part and the lower drum part which are rotated to be discharged, it is discharged to the outside of the housing by the rotation of the lower drum part. That is, since food waste is dehydrated, discharged, and drained by one part, manufacturing costs can be reduced. Further, since food waste is broken up, dehydrated, discharged, and drained by one motor, manufacturing costs can be reduced further. Furthermore, since the lower drum part is vertically moved by a relatively simple structure of a cam, a structure of the rotary shaft, and an inertial force, manufacturing costs can be reduced still further. Food waste is dehydrated and discharged by a centrifugal force and the food waste within the housing is discharged to the outside of the housing by the discharge blade installed in the drum.

Abstract: In one representative example, a portable containment apparatus includes a tank adapted to contain a liquid waste, an inlet through which the liquid waste is introduced into the tank, an outlet through which at least a portion of the contained liquid waste is expelled from the tank, a grinder pump operatively disposed within the tank and adapted to expel the portion of contained liquid waste from the tank, a heater affixed to the tank and adapted to transfer heat energy to the liquid waste contained within the tank, and an electrical distribution box adapted to be removably supported on an exterior surface of the tank. The electrical distribution box is adapted to be selectively stowed within the tank when removed from its supported position on the exterior surface of the tank. The apparatus also includes a receiver system adapted to receive the electrical box in its removably supported position on the exterior of the tank.

Abstract: Systems, apparatus and methods are described that can be used for cleaning wells using unfiltered fluids and fluids that contain solid matter. A spray head assembly mounted in a pumping station comprises a hydrodynamic mixing chamber configured to create turbulence in a fluid received from a pump. The pump draws a fluid from a well of the pumping station and provides a pressurized stream of the fluid to a pipe. A nozzle associated with an outlet of the mixing chamber, receives the mixed fluid from the hydrodynamic mixing chamber and the nozzle disperses the mixed fluid to the surface of a body of the fluid in the well.

Abstract: A mixing system for a fluid tank is described, the system having a drive motor, an impeller, a shroud enclosing the impeller and a cutter mounted on the shroud to cut solids. The shroud is open at inlet and discharge ends for drawing in and discharging fluid from the tank. A recess is provided on the internal surface of the shroud, wherein the cutter is adjustably positioned within the recess. The cutter is detachable from the recess to allow replacement. In use, homogeneity is maintained in a slurry contained within the tank by submerging the impeller such that the cutter cooperates with the impeller to cut solids within the slurry, drawing tank contents into the impeller at the inlet, cutting material between the cutter and blade, and then discharging the material.

Abstract: A cutting wheel for a grinder pump includes in one embodiment a monolithic disc-shaped base portion having a bottom surface having a plurality of integrally formed spaced-apart, downwardly-depending cutting elements disposed adjacent the peripheral edge of the disc-shaped based portion. In another embodiment, a cutting wheel for a grinder pump includes a monolithic disc-shaped base portion having a bottom surface having a plurality of integrally formed spaced-apart, downwardly-depending cutting elements disposed adjacent the peripheral edge of the disc-shaped based portion, and a plurality of integrally formed downwardly-depending paddle elements spaced-apart from the cutting elements.

Abstract: A macerating apparatus for a toilet in which the problem of jamming the macerator at startup is solved by rapidly detecting the flushing of the toilet and accelerating the macerator before motion-jamming solid objects in the effluent from the toilet can reach the macerator. The macerating apparatus may be comprised of a macerating cutter operatively connected to a motor, and a sensor in communication with the motor. The sensor may detect the flow of effluent from the toilet toward the macerator, the flow of makeup water from the supply tank into the toilet, or the mechanical action of the mechanism used to flush the toilet. The apparatus may include an intake basket having an asymmetric inlet tube and containing the macerating cutter, wherein the asymmetry of the inlet tube provides additional operating clearance between a cutting blade of the macerating cutter and the intake basket.

Abstract: A mixing system for a fluid tank is described herein, the system having a drive motor, an impeller capable of being submersed, a shroud having a sidewall enclosing the impeller, and a cutter mounted on the shroud and cooperating with a blade of the impeller to cut solids within the shroud. The shroud is open at both an inlet end and a discharge end for drawing in and discharging fluid from the tank. A recess is provided on the internal surface of the shroud, wherein the cutter is adjustably positioned within the recess. Additionally, the cutter is also detachable from the recess so that it may be replaced when worn.

Abstract: An apparatus for collecting, processing, and recycling kitchen scraps is provided. Kitchen scraps are thrown into a throw-in conduit provided on each floor of a building and transferred to a delivery conduit by a flushing device so as to reach a kitchen scraps collection device and be processed thereby. After the kitchen scraps are processed by the kitchen scraps collection device, a liquid removed from the kitchen scraps is further processed by a grease interception device so that oil is separated from the liquid. Thus, the apparatus collects, processes collectively, and performs water/oil separation on kitchen scraps.

Abstract: A device for reducing clogging of a gutter comprises a housing which fits in a gutter over the downspout. The device contains a motor-driven grinder mechanism which grinds up waterborne leaves and other debris passing through the housing, preferably as they exit through the outlet of the housing to the downspout. Preferably, the device also includes a plunger mechanism which helps push water and debris in the housing through the grinder mechanism. Also, preferable the device includes a water sensor and a debris sensor for operating the motor only when both water and debris are present.

Abstract: A device for reducing clogging of a gutter comprises a housing which fits in a gutter over the downspout. The device contains a motor-driven grinder mechanism which grinds up waterborne leaves and other debris passing through the housing, preferably as they exit through the outlet of the housing to the downspout. The grinder mechanism preferably comprises one or more rotary type blades located above an inlet of the downspout. The device may also include a plunger mechanism which helps push water and debris in the housing through the grinder mechanism. Also, preferable the device includes a water sensor and a debris sensor for operating the motor only when both water and debris are present.

Abstract: A cutting assembly for positioning at the intake end of a centrifugal pump used for pumping liquids and slurries containing solid matter, including various types of refuse, and for chopping the solid matter which may thereafter be processed for disposal is disclosed. The cutting assembly includes an intake end plate having a body defining the opening to allow the passage of material, such as waste water and the like, therethrough. The intake end plate attaches at the intake end of the chopper pump. The assembly also includes at least one, and preferably a plurality of cutter bars projecting from the body of the intake end plate into the opening, and a nut positioned at the intake end and attached to the chopper pump within the opening of the intake end plate.

Abstract: A tabletop electric stirrer includes a rotating body and an electric rotating drive. This stirrer can perform stirring efficiently, can easily crush and dissolve a water soluble capsule not only in hot water but also in cold water, and can crush a plurality of capsules in a short period of time.

Abstract: A manually operable device and a method for separating solid waste materials from liquid to be disposed of through a drain, and for reducing the size of pieces of such solid waste materials for more efficient disposal through the drain. A size reduction assembly is manually movable with respect to a stationary body and may include perforated material for catching solid material from a liquid flowing into the drain, and at least one cutting or ripping or abrasion component for reducing the size of pieces of the solid material into smaller pieces that may then pass downward through the drain. In some embodiments the size reduction assembly may be driven downward by pressure from a hand or foot. The reduced-size pieces of material are flushed from the device by liquid draining through the device.

Abstract: A pump assembly supportable in a tank having an opening includes a pump such as a grinder pump and a cover attachable to the pump. The cover has a peripherally-extending portion extending outwardly from the pump and the peripherally-extending portion is sized to rest on a first surface of the portion of the tank defining the opening. A quick-release latching mechanism may include a plurality of members such as arms or pawls which are movable generally radially between a retracted position wherein the outer ends of the plurality of members are disposed inwardly of the peripherally-extending portion of the cover allowing the pump assembly to be lowered into the opening in the tank, and an extended position wherein the outer ends of a plurality of members are positionable against a second opposite side of the portion of the tank defining the opening to compress the portion of the tank forming the opening between the cover and the plurality of members.

Abstract: The present application discloses a recirculating crushing and grinding device for crushing and grinding liquid-like materials or materials that contain liquid, said device comprises a motor, a hopper, a crushing and grinding part and a material recirculating part. Said crushing and grinding part includes a coarse-crushing section and a fine-grinding section, said fine grinding section comprises a pair of grinding components, and said material recirculating part comprises a pump and recirculating ducts provided downstream of said crushing-grinding part. The present application also discloses a soybean milk maker employing said recirculating crushing-grinding device, and a method for crushing and grinding a recirculated material and a method for producing soybean milk. The equipment disclosed in the present invention is easy to manufacture, with the advantages of a low noise during operation and low energy consumption.

Abstract: A sewage pump includes a motor, a main shaft, an upper impeller, a lower impeller, a grinding wheel, a top cap, an upper bearing base with an upper mounting plate, an upper bearing base, a tube body with a wire inlet connector, a lower bearing base, a lower bearing with a lower mounting plate, a lower base and a vertical bypass. The main shaft has a quad-bearing structure to minimize deflection at high speed and high pressure and has rotary seals at each end to improve stability and sealing efficiency. Moreover, the wire inlet connector is filled with epoxy filling material to protect the wire, and the sewage pump further has moisture-sensors to timely stop the motor when sealing efficiency is failing.

Abstract: The invention relates to a cutting device arrangement including a generator and a spray device in the region of a cutting tool whereby liquid is sprayed for binding cutting residue blown up during the cutting process. The cutting device also includes a liquid supply device whereby the liquid can be supplied to the spray device. An electric pump is provided as part of the spray device whereby the liquid can be sprayed under pressure, wherein the electric pump is electrically connected to the generator.

Abstract: The present invention relates to a stock re-pulper designed to macerate stock put into a stock tub. The stock re-pulper comprises first and second porous plate disposed in the stock tub and respectively having first and second holes, first macerating blades disposed to confront one surface of the first porous plate and made to be rotated in proximity to a first open area of the first porous plate, second macerating blades disposed to confront one surface of the second porous plate in proximity to a second open area and made to be rotated concentrically with respect to the center of rotation of the first macerating blades, and a pump blade disposed to confront the other surface of the first porous plate in proximity to the first open area and made to be rotated concentrically with respect to the center of rotation of the first macerating blades.

Abstract: A grinder pump system that is simpler to install, and permits ready access to the pump system components, has a grinder pump station for receiving a grinder pump. The pump station has a basin with an interior volume to provide a well for receiving sewage. A sewage inlet port and a sewage discharge port allow, sewage to flow into and out of the basin interior volume. The basin is positioned below grade, and sewage is directed thereto through a sewage source. An access riser is selectively coupled to the basin, and extends to the ground surface. Pump system components mounted within the basin are accessible via the access riser and an opening on the basin top surface. A lid assembly is selectively removably coupled to the access riser to close the system from the environment.

Abstract: A sanitary shredder includes at least a channel feeding water into a caisson (1), an electric motor whereof the axis has at its end a rotor pump (5) with blades (6), and shredding elements opposite the shredding chamber (3) provided with an inlet. The front surface (5a) of the rotor (5) is substantially planar and comprises a plurality of passages for water arranged substantially radially and emerging on the circumference of the rotor (5), each passage of the rotor (5) is extended by a channel delimited by the helical blades (6), the rotor (5) is housed in the pump body (8), its front surface (5a) being substantially in the plane of the pump body opening, shredding members (9) being arranged in axial projection relative to said front surface (5a).

Abstract: An improved sewage grinder pump tank inclusive of an upper tank portion formed as a cylindrical section of DR 32.5 HDPE, a lid assembly covering the upper tank portion, a lower tank portion similar to the upper tank portion, a pump platform section in communication with the upper tank portion and lower tank portion and forming a platform there between for mounting a grinder pump, and a base formed as a concave molded section for mating with the lower tank portion. The pump platform section is butt fused between the upper tank portion and the lower tank portion, and the base is butt fused to the open end of the lower tank portion. The butt fusion amalgamates the parts into one piece and avoids imperfections, thereby improving structural integrity. In addition, the grinder pump tank simplifies installation, and reduces cost.

Abstract: A vertical mixer has a set of wheels on each side of the mixer that is automatically adjustable for variation in the terrain where the mixer is used. Each set is rotatable about a pivot point. Preferably, weight bars provide the pivot point for each set of wheels. There is a further weight bar in the tongue of the mixer. The weight bars automatically determine the weight of materials within the mixer on an intermittent or continuous basis.

Abstract: A blender base that may be used with a food processor container, a blender container, and a single use beverage container. The blender container includes a novel blade unit having a food processor-style blade and blender type blades. Programs with preprogrammed motor commands for desired operations are stored in memory and may be selected by a user on a user interface. The user interface may include a liquid crystal display, or function switches and light emitting diodes. Upon selection of a particular pre-defined function, the microcontroller retrieves the appropriate program from the read only memory and specifies the preprogrammed motor commands to accomplish the selected function.

Abstract: An auger device of a vertical mixer is disclosed for mixing animal feed. The auger device includes a core having a first and a second end and flighting which is secured to the core so that in operation of the mixer, when the auger device rotates, the animal feed is mixed. The flighting includes a first portion which is disposed helically around the core such that the feed is urged by the first portion in a direction from the first towards the second end of the core. Additionally, a second portion is disposed helically around the core such that the feed is urged by the second portion in the direction from the first towards the second end of the core. Also, the second portion is interposed between the first portion.

Abstract: A crushing apparatus is provided for crushing a printed circuit board on which electronic components are mounted into pieces of a size ranging from a few to ten centimeters square and separating some of the components and sheathed wires from the printed circuit board. The crushing apparatus comprises a rotor 3 having a substantially conical or truncated conical projected center 6 mounted at the center of rotation thereof, a plurality of extensions 3a thereof extending from the conical projected center 6 radially and horizontally, and studs 3 and 4 mounted on the extensions 3a thereof. A drive motor 8 is provided for rotating the rotor 3, a cylindrical case 1 accommodates the rotor 3 therein, and a plurality of studs 2 mounted are on the inner side of the cylindrical case 1.

Abstract: A vertical mixer has a set of wheels on each side of the mixer that is automatically adjustable for variation in the terrain where the mixer is used. Each set is rotatable about a pivot point. Preferably, weight bars provide the pivot point for each set of wheels. There is a further weight bar in the tongue of the mixer. The weight bars automatically determine the weight of materials within the mixer on an intermittent or continuous basis.

Abstract: A grinding mechanism or assembly for a food waste disposer, the grinding mechanism being enclosed in a housing of the food waste disposer. The grinding mechanism includes a shredder plate assembly and a stationary shredder ring. The shredder plate assembly has an upper rotating plate and a lower lug support plate. The lower lug support plate has a body portion, and shredder lugs and tumbling spikes integrally formed with the body portion. The upper rotating plate has key slots and key holes for receiving the fixed shredder lugs and tumbling spikes. The stationary shredder ring is fixed to the housing of the food waste disposer and has a plurality of teeth. The stationary shredder ring may also have diverters and breakers. The fixed shredder lugs force food waste against the teeth of the stationary shredder ring to grind the food waste into particulate matter. The profile of the fixed shredder lug may include a vertical toe, a notch and a heel.

Abstract: A self-contained, indoor wastewater disposal system for collecting, grinding, and pumping wastewater is readily installed within a building such as in the basement thereof by connecting to a wastewater feed pipe, to a wastewater discharge pipe, and to an electrical power supply such as a standard 120 volt or 220 volt electrical outlet. The system generally includes a tank, a grinder pump, and an alarm unit for indicating a problem with the operation of the system. The alarm unit is desirably operable to indicate loss of electrical power to the grinder pump, indicate an overflow water level in the tank, and/or indicate adegradation of performance of the grinder pump. The tank may be configured for receiving the wastewater feed pipe from the building at either of two orientations which are disposed ninety-degrees from each other so that the system may be easily and closely positioned adjacent to a wall of the building and so that the connection of the wastewater feed pipe to the tank is obscured from view.