Submersible pump capable of improving mechanical seal operation environment

Abstract

The invention provides a submersible pump capable of improving the operating environment of a mechanical seal, which comprises a submersible electric pump, a volute and a bottom cover which are sequentially connected from top to bottom, and further comprises an impeller, a mechanical seal seat and a mechanical seal, and the mechanical seal seat penetrates through a rotor shaft of the submersible electric pump and is arranged at the end part of the submersible electric pump; the impeller is arranged at the end of a rotor shaft of the submersible electric pump and located in the volute. A first cavity is formed between the impeller and the mechanical sealing seat, and the mechanical seal is arranged on the mechanical sealing seat and located in the first cavity. The end of the impeller is in clearance fit with the end of the mechanical sealing seat to form a first cutting pair, a sealing pair and a second cutting pair which are sequentially connected. According to the submersible pump capable of improving the operating environment of the mechanical seal, fibers and sand can be effectively prevented from entering a cavity where the mechanical seal is located, so that the fibers are prevented from being wound on the mechanical seal, and long-term safe use of the mechanical seal is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of water pumps, and in particular relates to a submersible pump for improving the operating environment of a mechanical seal. Background technique [0002] Submersible sewage pumps are widely used in the transportation of domestic sewage and industrial wastewater, but the components of domestic sewage and industrial wastewater are complex and contain a large amount of sand and fibers, which will have a greater impact on the safe operation of submersible pumps. [0003] During the operation of the submersible pump, sand and fine fibers will enter the cavity where the mechanical seal is located, and the fibers will be wound on the mechanical seal. The sand and fibers will affect its sealing effect, so that the liquid will enter the motor cavity and cause damage to the motor. At the same time, the heat dissipation performance of the mechanical seal is reduced, which affects the reliable use of the mechanical se...

AI Technical Summary

Problems solved by technology

[0002] Submersible sewage pumps are widely used in the transportation of domestic sewage and industrial wastewater. Safe operation has a greater impact

[0003] During the operation of the submersible pump, sand and fine fibers will enter the cavity where the mechanical seal is located, and the fibers will be wound on the mechanical seal, and the sand and fibers will affect its sealing effect. So that the liquid enters the motor cavity, causing damage to the motor

At the same time, the heat dissipation performance of the mechanical seal is reduced, which affects the reliable use of the mechanical seal

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