Energy-saving heat dissipation type high-pressure hot water circulating pump

Abstract

The invention discloses an energy-saving heat dissipation type high-pressure hot water circulating pump, and relates to the technical field of circulating pumps. The device comprises an outer shell and a bottom shell, the outer shell is communicated with the bottom shell, a heat dissipation part is installed in the outer shell, a motor is installed in the heat dissipation part, a first impeller and a second impeller are installed on a shaft body of the motor, the first impeller is located in the outer shell, the second impeller is located in the bottom shell, and exhaust holes are formed in the side face of the outer shell. A liquid inlet hole is formed in the side face of the bottom shell. The rotating shaft body drives the first impeller and the second impeller to rotate, the first blade arranged in the first impeller exhausts air in the first cavity through the exhaust hole, and external air enters the first cavity through the heat dissipation part, so that heat dissipation of the motor and the shaft body is completed.

Description

technical field [0001] The invention belongs to the technical field of circulating pumps, in particular to an energy-saving and heat-dissipating high-pressure hot water circulating pump. Background technique [0002] Hot water circulation electric pumps, especially permanent magnet synchronous motor hot water circulation pumps, have the advantages of high efficiency, energy saving, low noise, and frequency conversion operation, and are widely used. This type of electric pump requires an electronics housing (junction box) for housing the motor control unit (control drive controller / driver board, power connections / electrical connections, etc.); the motor drive controller includes a microprocessor and power components , usually power devices need to set the heat sink. [0003] Because one end of the rotating shaft in the pump body is coaxially connected with the external motor, and the other end is equipped with an impeller for water absorption, and the pump will easily lose o...

AI Technical Summary

Problems solved by technology

[0003] Because one end of the rotating shaft in the pump body is coaxially connected with the external motor, and the other end is equipped with an impeller for water absorption, and the pump will easily lose or lose its speed during continuous rotation as the pump works over time and is affected by the temperature of the external high-temperature water flow. The temperature is transferred to the rotating shaft by the high-temperature water flow through the impeller, causing the rotating shaft to be stuck and locked when it is heated and expanded, causing the staff to stop to cool down or the external physical cooling of the feed water pump, and the rotating shaft is easy to get stuck in the hot water working state The deadlock structure not only greatly reduces the working efficiency, but also reduces the service life of the water pump. Every time the shaft is locked and locked, it will cause irreversible damage to the shaft, which will eventually lead to the need to replace the water pump and increase the cost

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