Self-flushing submersible electric pump and method for flushing sediments at its bottom

Abstract

A self-flushing submersible electric pump and a method for flushing sediments at the bottom thereof. The self-flushing submersible electric pump includes a motor, a cable, a junction box, a pump cover, an impeller and a volute. The motor and the cable are connected in the junction box. The pump cover communicates with the volute to form an impeller chamber, and the impeller is located in the impeller chamber. The rotating shaft of the motor passes through the pump cover and is connected with the impeller. The volute is provided with a water inlet and a water outlet. One end of the water channel is connected to the water outlet of the volute, and the other end of the water inlet channel is connected to the nozzle. The flushing method is to guide part of the high-pressure water flow to the nozzle through the water inlet channel, and spray high-pressure water to the bottom of the submersible electric pump through the nozzle, and use high-pressure water to flush or clean the bottom of the submersible electric pump to prevent the sedimentation of dirt or wash away the bottom deposit. thing. The invention uses high-pressure water flow to flush the large-area area at the bottom of the submersible electric pump, and has good flushing effect.

Description

technical field [0001] The invention relates to a submersible electric pump and a method for flushing sediment, in particular to a self-flushing submersible electric pump and a method for flushing sediment at the bottom of the submersible electric pump. Background technique [0002] Submersible pumps are widely used in industry, municipal engineering, water conservancy, various constructions, agricultural water supply and drainage and sewage treatment. It is used to pump wastewater, domestic sewage, rainwater, etc. containing solid particles and various fibrous dirt. Its hydraulic components are high-efficiency, non-clogging, and anti-winding. In terms of structure, due to the integration of electromechanical, compact structure and small volume, it has developed rapidly. However, due to the continuous precipitation of impurities in the sewage, the bottom of the submersible electric pump inlet pool is finally raised, the water absorption height of the pump is reduced, and th...

AI Technical Summary

Problems solved by technology

The first method is rarely used due to the installation of a dedicated submersible electric pump, which increases the corresponding cost and energy consumption and is uneconomical.

In the second method, since the stirring wheel is set at the bottom of the submersible pump, the shaft extension becomes longer, and the reliability of the water pump is reduced, and the built-in stirring wheel has a small diameter due to structural limitations, and the stirring effect is very limited, so it cannot be solved. The phenomenon of dirt deposition

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