目前,国内各高校的液压传动教材中对齿轮泵工作 原理的解释几乎一致认为:在图1中当泵的齿轮按图示方向旋转时,右侧吸油腔相互啮合的轮齿逐渐脱开,密封工作容积逐渐增大,形成部分真空。因此,油箱中的油液在外界大气压的作用下,经吸油管进入吸油腔,将齿间充满,并随着齿轮旋转,把油液带到左侧压油腔内。在 At present, the hydraulic drive teaching materials in colleges and universities all over the world explain the working principle of the gear pump is almost the same: in Figure 1 when the pump gear in the direction shown in the figure, the right side of the oil chamber intermeshing gear gradually disengaged, sealed Work volume gradually increased, the formation of a partial vacuum. Therefore, the oil in the tank under the action of atmospheric pressure, through the suction pipe into the suction chamber, fill the gap between the teeth, and with the gear rotation, the oil to the left pressure chamber. in