REXROTH聚氨酯行業(yè)專用泵A7VKO028MA/10MRSL4P550-0工作原理

 高壓計量泵的作用是將機械能轉(zhuǎn)變?yōu)橐簤耗?。?dāng)電動機帶動泵的主軸旋轉(zhuǎn)時,通過連桿柱塞帶動缸體旋轉(zhuǎn),由于缸體軸線與主軸軸線成一夾角,柱塞地缸體內(nèi)作往復(fù)運動,此時缸體內(nèi)的柱塞孔發(fā)生容積變化。當(dāng)容積由小變大時,介質(zhì)從泵的吸入口吸入,經(jīng)配流盤的低壓窗口進入柱塞孔、當(dāng)容積由大變小時,介質(zhì)經(jīng)配流盤的高壓窗口從泵的排出口排出。這樣主軸旋轉(zhuǎn)一周,每個柱塞孔完成一使用條件:

1.油溫:HVK系列計量泵的正常工作溫度一般在-20℃-70℃,高不超過80℃。當(dāng)溫度低于10℃時,應(yīng)采取加熱措施。

2.粘度:工作介質(zhì)使用粘度范圍應(yīng)在1000-4000Mpa·s/25℃。對HVK系列計量泵使用的高粘度介質(zhì)、應(yīng)加溫稀釋至此粘度范圍,并在工作過程中,在泵的軸封蓋上兩螺孔處注入二辛酯,使軸封能正常工作。

3.濾油精度:佳濾油精度為10-20um,低不超過30um。

4.泵的常用工作壓力和轉(zhuǎn)速不應(yīng)超過額定值,瞬時不超過高值。高值一般連續(xù)使用不超過1分鐘,且每班累計不超過10%的工作時間。

5.殼體內(nèi)腔泄漏油允許壓力,不超過0.2Mpa。

計量泵依然認真?zhèn)湄汚7VK0028MA/10MRSL4P550-0 

rexroth計量泵淺談一二備貨系列

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