一、概述齿轮泵泄漏有三条途径:一是通过齿顶圆与泵体内孔间的径向间隙;二是通过齿轮端面与侧板之间的轴向间隙;三是两个齿轮啮合处的接触间隙。而在高压齿轮泵中,一般都采用浮动侧板来减少轴向间隙泄漏量。有的泵在压油区也采用径向间隙自动补偿装置来减少径向间隙泄漏量。但具有双向功能的齿轮泵,就难以使用径向间隙补偿装置。尽管径向泄漏量比 First, an overview of the gear pump leak in three ways: First, through the addendum circle and the pump body bore radial gap between the two is through the gear end face and the side plate between the axial clearance; Third, the two gear meshing contact gap. In high-pressure gear pumps, floating plates are generally used to reduce the axial gap leakage. Some pumps in the pressure zone also uses radial clearance automatic compensation device to reduce the radial clearance leakage. However, with a two-way gear pump function, it is difficult to use radial clearance compensation device. Despite the radial leakage than