43 results about "Grinder pump" patented technology

A grinder pump assembly includes at least one grinder pump stage that has a diffuser and an impeller. The grinder pump assembly also includes a diffuser cap that includes cap contact surfaces. The impeller includes a plurality of upper vanes and lower vanes. The diffuser includes a plurality of lower contact surfaces, a plurality of diffuser vanes and plurality of upper contact surfaces. The upper vanes of the impeller are configured to rotate in proximity with the lower contact surfaces on the diffuser. The lower vanes of the impeller are configured to rotate in proximity with the cap contact surfaces. Multiple grinder pump stages may be used within a single grinder pump assembly.

A two-stage sewage grinder pump (10) having two impellers (30, 32) and a grinder (60) attached to the motor shaft (24). Preferably, both impellers are vortex impellers and are positioned between the grinder and the motor. The motor housing includes a discharge conduit (70) that is monolithic with the motor housing (20). An anti-siphon valve (71) is integral with the discharge conduit. An integral discharge flange (75) and check valve (78) are attached to the discharge conduit to connect the sewage grinder pump to a sewage outlet.

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 openings in the cutter plate have an unique shape which assists in the cutting of material which flows through an inlet of a grinder pump. The shape of the cutter blade cooperates with the openings in the cutter plate such that solids are forced between these respective components and thereby are efficiently cut into small pieces for passing through the openings and for discharge from the grinder pump basin system.

A cutter assembly configured for a grinder pump and including a cutter wheel and a cutter disc that interact with each other. The cutter wheel includes a shaft portion that is configured to interact with a central hole of the cutter disc, a hub portion that is connected to the shaft portion and at least two main cutting edges that in the radial direction extend outwards from the hub portion and that are configured to interact with a set of cutting holes of the cutter disc. The shaft portion includes an axially extending cutting recess. The hub portion includes only one radially extending cutting recess. The cutter disc includes a suction side, a central hole that is configured to interact with the shaft portion of the cutter wheel and a set of cutting holes that open in the suction side radially outside the central hole.

The invention discloses an anti-blocking continuous pyrohydrolysis system for sludge. Through coupling of a partial oxidation technology and intermediate medium backheating and the continuous pyrohydrolysis system, the problem that sludge in an anaerobic environment is subjected to high temperature carbonization and agglomeration is effectively solved, it is ensured that only clean fluid flows along the side of a heat exchanger shell to avoid frequent changing of the sludge conveying direction, a grinding pump breaks and grinds fed sludge to avoid aggregation and hardening of sludge particles,and the problem of system blockage is effectively avoided; heat of the system is utilized in a multi-gradient mode, a biogas production technology adopting anaerobic biochemistry is adopted, and liquid after pressing filtering is subjected to resource utilization; partial liquid after pressing filtering flows to the front sections of the technology to conduct viscosity reduction on sludge, usingof fresh softened waste is avoided, the thermal recycling efficiency of the system is improved, and resource consumption of the system is reduced; the economical performance of the system is effectively improved, the running stability of the continuous pyrohydrolysis system for sludge is enhanced, and promotion of large-scale application of the technology is facilitated.

The invention relates to a method for providing an axial gap in a cutter assembly of a grinder pump in order to secure an operative shearing action at a shearing interface in said cutter assembly. Theinvention also relates to a grinder pump comprising a cutter wheel (5) connected to and driven in rotation by a drive shaft (16), the cutter wheel (5) comprising a set of cutting edges (13), and a cutter disc (6) stationary connected to a pump housing (3) and having a central hole (24) and a set of cutting holes (12), the drive shaft (16) and the cutter wheel (5) being interconnected via said central hole (24) of the cutter disc (6),wherein the cutter wheel (5) and the cutter disc (6) constitute said cutter assembly. The grinder pump is characterized in that a shim (27), that has a thicknessequal to or greater than 0,05 millimeters and equal to or less than 0,15 millimeters and that is manufactured from degradable paper or plastic material, is clamped between the cutter wheel (5) and thecutter disc (6), wherein the grinder pump further comprises a locking member (26) acting against the cutter wheel (5) and the drive shaft (16) and fixating the axial gap between the cutter wheel (5)and the cutter disc (6) provided by said shim (27), wherein the set of cutting holes (12) of the cutter disc (6) are located radially outside an imaginary circle that is concentric with an axial center axis of the grinder pump and that has a fourth diameter (D4),an outer diameter (Do) of the shim (27) being lesser than said fourth diameter (D4)of the imaginary circle of the cutter disc (6).

The invention relates to a cutting and grinding pump. The cutting and grinding pump solves the problems existing in the prior art that the cutting effect is not very good and an impeller is prone to being stuck and the like. According to the adopted technical scheme, the cutting and grinding pump further includes a guide disk matched with a water inlet and a cutting disk matched with the guide disk, wherein the cutting disk is arranged on a pump shaft, and the guide disk is in the shape of an annular disk; a plurality of water inlet holes are formed in the inner ring wall of the guide disk, and the cutting disk is arranged in an inner cavity of the guide disk; and a plurality of blade parts are evenly distributed at the edge of the cutting disk, and the blade parts are matched with the inner ring wall of the guide disk. The cutting and grinding pump has the effects that the guide disk and the cutting disk are arranged at the water inlet of a pump body, the guide disk enables fluid to enter a flow path of the pump body through the water inlet holes, the guide disk and the cutting disk are matched to play a cutting effect and a filtering function to filter impurities, the effectiveness of cutting is improved, and the occurrence of blockage at the water inlet of the pump body is greatly reduced.

A cutting assembly and a grinder pump including the cutting assembly are disclosed. The cutting assembly includes a cutting plate that has a plurality of cutting ports with cutting edges that are distributed over a range of radial locations of the plate. The cutting edges of the cutting ports define a series of cutting regions of the cutting blades of a rotary cutter that operate in a shearing action with the cutter plate. The cutting action by the blades of the rotary cutter is distributed over nearly the entire lengths of the cutting edges of the cutting blades, thereby distributing the wear on the cutting blades evenly, and extending cutting assembly life.

The invention discloses a solid-containing organic waste treatment and separation system based on supercritical water oxidation technology, including a solid-containing waste pretreatment module, a solid-containing waste preheating module, an oxidant supply module, a supercritical water oxidation module, and subsequent products Temperature and pressure reduction module, subsequent product online separation module. Through screw conveyors, crushers, vibrating screens, iron removers, grinding pumps and other devices, solid wastes are crushed, screened, and ground in multiple stages to meet the requirements of supercritical water oxidation feed. At the same time, by adding quartz sand to grind the sedimentary salt that may be generated in the system, the problems of salt deposition and blockage in heat exchangers, reactors and other equipment are avoided. For the gas-liquid-solid three-phase products after the reaction, a two-stage separation measure combining a three-phase separator and a liquid-solid two-phase separator is adopted. At the same time, the liquid phase separated by the liquid-solid separator is circulated and separated, which improves the liquid-solid separation. At the same time, the solid residue after the reaction can be used for brick making, ceramsite making and external sales, etc., which improves the system economy.

The invention discloses an anti-clogging sludge continuous thermal hydrolysis system, which effectively solves the high-temperature carbonization and agglomeration of sludge in an anoxic environment by coupling partial oxidation technology and intermediate medium heat recovery to the continuous thermal hydrolysis system. Ensure that only clean fluid flows through the shell side of the heat exchanger, avoid frequent changes in the direction of sludge transport, and crush and grind the feed sludge through the grinding pump to prevent the sludge particles from agglomerating and compacting, effectively avoiding the problem of system blockage; at the same time, adopt Multi-level gradient utilization of system heat, and anaerobic biochemical biogas production technology, resource utilization of the filtrate, and at the same time, part of the filtrate is heat-exchanged and reflowed to reduce the viscosity of the sludge in the early stage, avoiding the use of fresh demineralized water, and improving the system While improving the efficiency of heat recycling, it reduces the consumption of system resources, effectively improves the economy of the system, and enhances the operation stability of the sludge continuous thermal hydrolysis system, which will help promote the large-scale application of this technology.

Biological waste management systems are provided herein. A waste management system may include a waste shredder, an accumulator tank, a water supply, a digester tank, and a grinder pump. The accumulator tank may define an accumulation chamber downstream from the waste shredder to receive a shredded biologic waste or a decomposition agent. The water supply may be in fluid communication with the accumulator tank to provide a water flow to the accumulation chamber. The digester tank may define a digestion chamber in fluid communication with the accumulation chamber to receive a slurry mixture comprising the biologic waste and the decomposition agent. The grinder pump may be disposed in fluid communication with the accumulation chamber to grind the slurry mixture upstream from the digester tank.