Wuxi Dongao Nonferrous Casting Co., Ltd.
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Device requirements and design process of the pump cover
- Dec 09, 2017 -

The common material of the  pump cover is cast iron. The product is mainly placed on the the brake or the upper end of the liquid storage tank of  the clutch pump. The pump cover is equipped with a rubber gasket to prevent the brake fluid from leaking out and moisture from entering. The pump cover may be made of plastic or metal. The shape may be round, square, or rectangular and the pump cover is positioned by threads, bolts, or wire ferrules.
The pump cover is simple in structure and is a casting. The end face contacting with the pump body has higher required precision. During processing, rough turning and semi-finish turning are required to ensure sealing fit. The precision of the pump cover at the point where it does not meet the part is not much required, so it can be done during the casting of the blank.
When the pump cover is designed, a special fixture is designed for the manufacture of 3-φ9 blind holes. A three-hole positioning method is adopted to meet the positioning requirements, and a clamping device is adopted to ensure that no large error is generated in the processing process. In the middle process, the force analysis of the clamping device is carried out to ensure the reliability of clamping.
The pump cover has the advantages of simple structure, small volume, light weight, small fluid resistance, equal resistance coefficient as the same length of pipe section, and is compact and reliable. At present, the sealing surface materials widely use the plastic, which have good sealing performance and have been widely used in the vacuum system.