PV7-17/10-14RE01MC0-16 REXROTH葉片泵；液壓泵原理是為液壓傳動(dòng)提供加壓液體的一種液壓元件，是泵的一種。它的功能是把動(dòng)力機(jī)(如電動(dòng)機(jī)和內(nèi)燃機(jī)等)的機(jī)械能轉(zhuǎn)換成液體的壓力能。圖中為單柱塞泵的工作原理。凸輪由電動(dòng)機(jī)帶動(dòng)旋轉(zhuǎn)。當(dāng)凸輪推動(dòng)柱塞向上運(yùn)動(dòng)時(shí)，柱塞和缸體形成的密封體積減小，油液從密封體積中擠出，經(jīng)單向閥排到需要的地方去。當(dāng)凸輪旋轉(zhuǎn)至曲線的下降部位時(shí)，彈簧迫使柱塞向下，形成一定真空度，油 箱中的油液在大氣壓力的作用下進(jìn)入密封容積。凸 輪使柱塞不斷地升降，密封容積周期性地減小和增 大，泵就不斷吸油和排油。
   型號(hào) PV7 的液壓泵是變量葉片泵。

主要由泵體、轉(zhuǎn)子、葉片、定子環(huán)、壓力控制器和調(diào)節(jié)螺栓組成。圓形的定子環(huán)夾持在小調(diào)節(jié)活塞和大調(diào)節(jié)活塞之間。此環(huán)的第三個(gè)接觸點(diǎn)是高度調(diào)節(jié)螺栓。被驅(qū)動(dòng)的轉(zhuǎn)子在定子環(huán)內(nèi)轉(zhuǎn)動(dòng)。轉(zhuǎn)子槽內(nèi)的葉片由于離心力的作用壓在定子環(huán)上。

力士樂REXROTH葉片泵吸油和排油過程

用來傳遞油液的腔由葉片、轉(zhuǎn)子、定子環(huán)和配油盤形成。

為了在投入使用時(shí)確保泵的運(yùn)行功能，定子環(huán)由大調(diào)節(jié)活塞后面的彈簧壓在其偏心位置 (排油位置)。

當(dāng)轉(zhuǎn)子轉(zhuǎn)動(dòng)時(shí)，油腔的容積增大，并且通過吸油通道吸油。當(dāng)油腔達(dá)到容積時(shí)，它脫離吸油側(cè)。轉(zhuǎn)子繼續(xù)轉(zhuǎn)動(dòng)，此腔和壓油側(cè)接通，并使其容積減小，通過壓油通道壓油到系統(tǒng)。

PV7-17/10-14RE01MC0-16 REXROTH葉片泵

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PV7-17/10-14RE01MC0-16 REXROTH葉片泵