工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。

Working principle: piston moves from left to right, form a negative pressure pump cylinder, the liquid tank into the pump by the inhalation valve cylinder.

youdao

工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。

How it works: the piston moves from left to right, form a negative pressure pump cylinder, then the suction tank fluid through the valve into the pump cylinder.

youdao

通过分析发现，如对阀座和阀芯的结构进行改进，可以明显减小负压值与气穴发生的程度。

Result shows that the negative pressure and the cavitation can be minished by improving the structure of the valve seat and core.

youdao