A multi-stage cutting and crushing sewage pump

Abstract

The invention discloses a multi-stage cutting and crushing sewage pump, and relates to the field of water pumps. The multi-stage cutting and crushing sewage pump is characterized by comprising a pumpbody and a pump shell arranged at the lower end of the pump body, a pump shaft is arranged on the pump body, the lower end of the pump shaft extends out of the pump body and penetrates into the pump shell, an impeller is further arranged in the pump shell, the impeller is coaxially connected to the pump shaft for pumping liquid, a water outlet end and a water inlet end further communicate with thepump shell, a ring sleeve is connected to the water inlet end, and the ring sleeve and the pump shaft are coaxially arranged; a cutting device is arranged in the ring sleeve and comprises a pluralityof cutting knives, two rotating frames and a transmission assembly used for driving the cutting knives to rotate; and the two rotating frames are coaxially arranged in the axial direction of the pumpshaft, the transmission assembly and the cutting knives are positioned between the two rotating frames, the rotating frames comprise a plurality of mounting strips arranged in the circumferential direction of the pump shaft, and each mounting strip is provided with a cutting edge along the side wall of the circumferential direction of the pump shaft. The rotary cutting of the cutting edges and the cutting knives form a multi-stage cutting effect, so that the cutting effect is better.

Description

technical field [0001] The invention relates to the field of water pumps, more specifically, it relates to a multi-stage cutting and crushing sewage pump. Background technique [0002] Sewage pumps are widely used in sewage treatment. [0003] Traditional sewage pumps usually have a cutting edge at the inlet, which cuts and grinds debris by rotating the cutting edge. [0004] However, when the conveyed sewage medium contains many impurities such as silt, plastic bags, long fibers, etc., due to the single cutting form and poor cutting effect, the impurities are easy to form blockages in the pump and affect the use of the sewage pump, which needs to be improved . Contents of the invention [0005] Aiming at the deficiencies in the prior art, the present invention provides a multi-stage cutting and crushing sewage pump, which has the advantages of better cutting effect and more stable use of the sewage pump. [0006] To achieve the above object, the present invention provi...

AI Technical Summary

Problems solved by technology

[0004] However, when the conveyed sewage medium contains many impurities such as silt, plastic bags, long fibers, etc., due to the single cutting form and poor cutting effect, the impurities are easy to form blockages in the pump and affect the use of the sewage pump, which needs to be improved

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