Cooling structure for hot water recycle pump

Abstract

The invention provides a cooling structure for a hot water recycle pump, which belongs to the technical field of mechanisms. The cooling structure for the hot water recycle pump solves the problem that the cooling effect of the convectional hot water recycle pump is so poor as to cause poor heat resistance of a motor. The cooling structure of the hot water recycle pump is arranged in the hot water recycle pump which comprises a stator, a rotor shaft and a rotor and a bearing cover which are fixedly sleeved with the rotor shaft; the cooling structure comprises a cylindrical shield which is arranged between the rotor and the stator, one end of the shield is connected with the rotor shaft in a sealing way, while the other end is connected with the bearing cover in a sealing way, and the shield, the bearing cover and the rotor shaft form a cooling cavity; the rotor is positioned in the cooling cavity; the bearing cover is provided with a plurality of water inlets; the axle of the rotor shaft is provided with a water guide hole which is communicated with the recycle pump head; and the lateral part of the rotor shaft is also provided with a water outlet hole which is communicated with the cooling cavity and the water guide hole. The cooling structure of the hot water recycle pump has the advantages of simple structure, good cooling effect, good lubrication effect and the like.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a cooling structure, in particular to a cooling structure used in a hot water circulating pump for transporting high-temperature and high-pressure hot water or liquid medium. Background technique [0002] Hot water circulation pumps are used in pipelines in metallurgy, power stations, power plants, textiles, chemical industry, heating and waste heat utilization systems or in hot water circulation in closed loops or organic heat exchange medium delivery systems. [0003] Most of the current hot water circulating pumps use mechanical seals to seal axial leakage. The structural motor part mainly includes stators, rotors, bearings, rotor shafts and other components. The water pump part mainly includes impellers and pump bodies with water inlets and outlets. The water pump and the motor are sealed and separated by the bearing cover. Although it can prevent the liquid in the water pum...

AI Technical Summary

Problems solved by technology

Although it can prevent the liquid in the water pump from entering the motor, so that the motor can work normally, there are still some problems, mainly: the motor will generate heat during work, and the motor cannot be cooled effectively, thus affecting the service life and performance of the motor. The motor is not cooled during work, resulting in poor heat resistance

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