Automobile water pump

Abstract

The invention discloses an automobile water pump which comprises a pump body, an impeller, a water pump shaft, a bevel wheel and a bearing. The water pump shaft is inserted into the pump body, one endof the water pump shaft extends out of the pump body, the water pump shaft is provided with a water-sealing part dividing the inside of the pump body into an impeller cavity and a driving cavity, theimpeller is composed of an impeller lining, an impeller top plate, an impeller base plate, a connecting disc and a plurality of blades, the impeller lining sleeves, the bottom, located in the impeller cavity, of the water pump shaft, the connecting disc is an open structure internally provided with a water seepage cavity, the inner end of the connecting disc is welded and fixed to the impeller lining, the impeller top plate and the impeller base plate are respectively welded and fixed to the upper end and the lower end of the outer end of the connecting disc, and the multiple blades are uniformly distributed between the impeller top plate and the impeller base plate. The automobile water pump is reasonable in structure, decreases the gap between the impeller and the inner wall of the pumpbody, meanwhile forms multiple water throwing channels in the impeller and is conductive to the improvement of water pumping efficiency.

Description

technical field [0001] The invention relates to an automobile engine water cooling system, in particular to an automobile water pump. Background technique [0002] As the power unit of the automobile engine cooling system cycle, the water pump is an important part of the automobile engine. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid, and its reliability requirements are relatively strict. Existing automotive water pumps usually include a pump body, impeller, water pump shaft, helical gear and bearings. The water pump shaft is inserted into the pump body and one end extends out of the pump body. Water seal, the impeller is set on the end of the water pump shaft located in the impeller cavity, the bearing is set on the end of the water pump shaft located in the driving cavity, the helical gear is installed on the end of the pump shaft extending out of the pump body, and is connected to the en...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automobile water pump to solve the problem that the gap between the impeller in the existing automobile water pump and the inner wall of the pump is relatively large, resulting in low pumping efficiency and ultimately affecting the performance of the automobile.

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