High-reliability submersible pump

Abstract

The invention provides a high-reliability submersible pump which comprises a water outlet section, a water lifting pipe, a fluid guide body and a rotor component which are sequentially connected in sequence from top to bottom. The rotor component comprises a water inlet section, an impeller, an impeller chamber, a motor extension shaft, a motor, a cylinder and an end cover, a cooling lubrication chamber is formed among the water inlet section, the cylinder and the end cover, a balance chamber is formed between the fluid guide body and the impeller, a pressure regulating chamber is formed between the impeller chamber and the water inlet section, and a cooling hole, a buffering hole, a pressure regulating hole and a flushing hole which correspondingly communicate with the cooling lubrication chamber, the balance chamber, the pressure regulating chamber and a bearing are arranged; a first-stage sand throwing cover and a second-stage sand throwing cover which are pressed are arranged on the two sides of a shaft sleeve, so that the pump can realize flushing, cooling lubrication, residual axial force balancing, impeller clearance adjustment and buffer starting functions; and a temperature detecting probe, a pressure detecting probe and a water leakage detecting probe are also arranged for achieving monitoring and automation, the running vibration and noise of the pump are reduced, the service life of the bearing and the rotor component are prolonged, and the operation safety and reliability of the pump is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of submersible pumps, in particular to a high-reliability submersible pump. Background technique [0002] Submersible pump is a general-purpose machine widely used. As a high-flow low-lift pump, it has a large demand in the sewage treatment market. [0003] In the prior art submersible pumps, the motor is arranged in the water pipe, the motor is located above the guide body, the pumping medium flows through the motor, and the external cooling of the motor casing or the internal circulation cooling structure of the casing are adopted. The medium contains a large amount of impurities such as sand or hard particles, which may cause the mechanical seal or bearing of the motor to wear and damage the motor, and also easily block the circulating cooling system of the motor, causing the motor temperature to rise and burn out the motor. Moreover, the cables of the motor are located in the water pumping pipe, and the...

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Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a high-reliability submersible pump, which solves the problems of high vibration and noise during pump operation, improves the safety and reliability of pump operation, and improves the performance of the pump. service life

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