43 results about "Grinder pump" patented technology

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).

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.