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潜油泵叶轮及导轮的内腔形状复杂,流道曲折且深。一般采用手工操作涂挂涂料。该产品要求流道内粗糙度不超过Ra25,否则影响整泵的效率和扬程。为提高生产率和减轻劳动强度考虑采用制壳生产线进行机械化生产。 笔者调研过的国内十多条制壳生产线,认为没有一条能够完满地满足叶轮、导轮的涂料工艺要求,要使涂料和1、2、3层的撒砂能够均匀地进入复杂窄小的叶、导轮流道内,必须对传统制壳线加以改进。
The cavity shape of the submersible pump impeller and the guide wheel is complicated, the flow passage is zigzag and deep. Generally used manual coating coating hanging paint. The product requires that the roughness of the runner does not exceed Ra25, otherwise it will affect the efficiency and head of the whole pump. In order to improve productivity and reduce labor intensity consider the use of crust production lines for mechanized production. I studied more than a dozen domestic shell line, that no one can fully meet the requirements of the impeller, the guide wheel of the coating process, to make the coating and 1, 2, 3 layers of sand evenly into the complex narrow leaves , Guide wheel runner, the traditional system must be improved shell line.