Submersible sewage pump

Abstract

The invention provides a submersible sewage pump. The submersible sewage pump comprises a pump body, a driving shaft, a driving gear, a first impeller, a second impeller and a driving assembly, wherein the driving gear sleeves the driving shaft and axially reciprocates along with rotation of the driving shaft; a first connecting gear is arranged on a transmission shaft of the first impeller, a second connecting gear is arranged on a transmission shaft of the second impeller, and the driving assembly is connected with the driving shaft to control the driving gear to axially move along the driving shaft so that the driving gear is connected with the first connecting gear, or is connected with the second connecting gear, or independently rotates. Therefore, the connection relation between the driving shaft and the two impellers can be adjusted by controlling the driving gear through the driving assembly, so that the submersible sewage pump can continuously discharge sewage during alternate work of the first impeller and the second impeller, the working efficiency of the sewage pump is improved, meanwhile, burning loss of a motor can be avoided, the operation reliability of the sewage pump is improved, and the service life of the sewage pump is prolonged.

Description

technical field [0001] The invention relates to the field of sewage pumps, in particular to a submersible sewage pump. Background technique [0002] As people become more and more aware of environmental protection, sewage treatment has become an important part of current environmental engineering governance. Sewage treatment is a purification process to make sewage meet the water quality requirements for reuse. Sewage treatment is widely used in construction, agriculture, transportation, Various fields such as energy, petrochemical, environmental protection, urban landscape, medical treatment and catering. [0003] However, the sewage pumps used in the existing sewage treatment process often have the following problems: [0004] 1. The conveyed medium contains fibers that are easy to entangle or bunch. These fibers are easy to entangle on the impeller, and solid particles such as paper dust will accumulate in the pump body and block the front end of the impeller. When the s...

AI Technical Summary

Problems solved by technology

[0004]1. The conveyed medium contains fibers that are easy to entangle or bunch. These fibers are easy to wind on the impeller, and solid particles such as paper scraps will accumulate The front end of the impeller is blocked inside the pump body, and when the sewage pump is blocked, it will stop working directly, and the operator needs to perform frequent maintenance, which not only delays the progress of sewage discharge, but also greatly increases the workload;

[0005]2. If the impeller is stuck and not shut down in time, it is very easy to cause the motor to burn out, which will cause inconvenience in sewage discharge and have a serious impact on life and environmental protection

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