R900439389 Z2FS6A2-4X/2QV R900439389 Z2FS6A2-4X/2QV R900439389
葉片泵分為雙作用泵和單作用泵
雙作用泵工作原理：
它由定子、轉子、葉片和配油盤等組成。定子內壁近似橢圓形。葉片安裝在轉子徑向槽內并可沿槽滑動，轉子與定子同心安裝。當轉子轉動時，葉片在離心力的作用下壓向定子內表面，并隨定子內表面曲線的變化而被迫在轉子槽內往復滑動，相鄰兩葉片間的密封工作腔就發生增大和縮小的變化。葉片由小半徑圓弧向大半徑圓弧處滑移時，密封工作腔隨之逐漸增大形成局部真空，于是油箱中油液通過配油盤上吸油腔吸入；反之將油壓出。轉子每轉一周，葉片在槽內往復滑移2次，完成2次吸油和2次壓油，并且油壓所產生的徑向力是平衡的，故稱雙作用式，也稱平衡式。
：劉 女士
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