A multi-stage cutting and grinding sewage pump

Abstract

The invention relates to a multistage cutting and grinding blow-down pump. The multistage cutting and grinding blow-down pump comprises a pump body (1) and a pump shell (2) arranged on the lower side of the pump body (1); a pump shaft (3) is fixedly connected to the pump body (1) in the axial direction, the lower end of the pump shaft (3) extends out of the pump body (1), a vane wheel (4) is fixedly connected to the lower end of the pump shaft (3), and a blade fixing frame (6) is fixedly connected to the lower end of the pump shell (2); a cutting blade A (7) is arranged on the blade fixing frame (6), and a cutting blade B (8) is further installed on the blade fixing frame (6); a water inlet end (9) is arranged at the lower end of the blade fixing frame (6), a cutting and grinding disc (10) is arranged at the water inlet end (9), and a cutting blade C (12) is further arranged on the outer side of the cutting and grinding disc (10). According to the multistage cutting and grinding blow-down pump, the structural design is reasonable and novel, a multistage cutting function is achieved, and the service life of the blow-down pump can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a multi-stage cutting and grinding sewage pump. Background technique [0002] Sewage pumps are widely used in mines, papermaking, printing and dyeing, environmental protection, oil refining, petroleum, chemical industry, farms, and dyeing and chemical industries because of their characteristics of being able to transport liquids containing hard solids, fibers, and dirty, sticky, and slippery substances. , brewing, food, chemical fertilizer, coking plant, construction, marble factory, mud, quicksand, mud pond, sewage pond and many other industries in sewage treatment. The existing sewage pumps usually cut and grind sundries by setting a cutting device at the inlet end or cutting by blade rotation, but most of them only have a single-stage cutting function, and the cutting effect is poor. When the sewage medium to be transported contains many impurities, silt, plastic bags, lo...

AI Technical Summary

Problems solved by technology

The existing sewage pumps usually cut and grind sundries by setting a cutting device at the inlet end or cutting by blade rotation, but most of them only have a single-stage cutting function, and the cutting effect is poor

When the sewage medium to be transported contains many impurities, silt, plastic bags, long fibers and other impurities, the blades or the main shaft are easily entangled, causing the motor to stall, burn out or block the pipeline and pump, which seriously affects the normal operation of the sewage pump. work and service life

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