Automobile engine cooling water pump

Abstract

The invention relates to a cooling water pump for the automobile motor. The cooling water pump comprises a water pump casing body combined with an engine cylinder body, a sealing cavity is formed by the water pump casing body and the cylinder body combined, a water pump impeller driven by a water pump wheel shaft and a water inlet opening is arranged at the position of the sealing cavity, the water inlet opening is arranged on the engine cylinder body, and two water outlet openings are respectively arranged at the two sides of the water pump casing body. A pressure relief hole is added in the blade inlet opening of the water pump impeller. The water pump drive adopts double-row sprocket drive. The water pump is provided with two water outlet openings, thus the flow quantity of the water pump is increased; the water pump impeller adopts a plastic structure, thus, on one hand, the whole mass of the water pump is lightened, and the rotational inertia is reduced; on the other hand, the water pump efficiency is enhanced; and the pressure relief hole is added in the blade inlet opening of the water pump impeller, thus the front and rear water pressure of the impeller is balanced, the cavitation erosion surplus is reduced, and the pressure relief hole can also play a cooling and water sealing role. The water pump drive adopts the double-row sprocket drive, thus, on one hand, the work efficiency of the water pump is enhanced, and on the other hand, the work stability of the water pump is strengthened.

Description

technical field [0001] The invention relates to a water pump, in particular to an automobile engine cooling water pump. Background technique [0002] At present, most of the water inlets of automobile engine water pumps are on the water pump shell, with a single water outlet; most of the water pump impellers are metal impellers, and there are many cavitation problems; most of the water pumps are driven by belts, the transmission force is single, and it is easy to cause belt slippage ; There are also many problems with abnormal noise of the water pump. Chinese patent application number 200410059751.7 discloses a water pump for an internal combustion engine, which includes: a pump casing, which is adapted to be fixed to the engine; a pump body, which is joined to the pump casing, so that A fluid chamber of the water pump is formed therebetween; and a rotating pump shaft member extends through the pump body into the fluid chamber. A fastening set for fastening the pump casing...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the water inlets of automobile engine water pumps are on the water pump shell, with a single water outlet; most of the water pump impellers are metal impellers, and there are many cavitation problems; most of the water pumps are driven by belts, the transmission force is single, and it is easy to cause belt slippage ; There are many problems with abnormal noise of the water pump

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