Multistage cutting and grinding sewage pump

Abstract

The invention discloses a multistage cutting and grinding sewage pump. The multistage cutting and grinding sewage pump comprises a sewage pump body and a water inlet base located at the bottom of the sewage pump body, the water inlet base is arranged at the bottom of the sewage pump body, the sewage pump body and the water inlet base are connected and fixed through second bolts, so that the sewage pump body and the water inlet base can be conveniently dissemble and maintain through the second bolts; a connecting piece is installed at the lower end of a rotating shaft, the connecting piece is connected with a cutting device through a first bolt, and the cutting device is located in a water inlet. Impurities such as more impurities, sludge, plastic bags and long fibers contained in a sewage medium are primarily cut through cooperation of a mounting disc and a cutting blade in the cutting device, so that the impurities become small and enter the sewage pump body, larger impurities are prevented from entering the sewage pump body; due to the fact that the connecting piece is connected and fixed to the cutting device through the first bolt, the cutting device can be conveniently maintained and replaced through the first bolts.

Description

technical field [0001] The invention belongs to the technical field of sewage pumps, and in particular relates to a multi-stage cutting and grinding sewage pump. Background technique [0002] The sewage pump is a kind of pump product that is connected with the pump and the motor, and submerges into the liquid to work at the same time. Compared with the general horizontal pump or vertical sewage pump, the sewage pump has a compact structure, a small footprint, convenient installation and maintenance, and large High-end sewage pumps are generally equipped with automatic coupling devices that can be installed automatically. The installation and maintenance are quite convenient, and the continuous operation time is long. There are no problems such as cavitation damage and water diversion, which brings great convenience to the operators. Small, low motor temperature rise, no pollution to the environment, the sewage pump is improved on the basis of the drainage pump, generally inc...

AI Technical Summary

Problems solved by technology

[0003] The existing sewage pumps usually cut and grind debris 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 more 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 and service life of the sewage pump. For this reason, we propose Multi-stage cutting and grinding sewage pump to solve the problems in the prior art

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