力士樂(lè)REXROTH葉片泵R900247239 價(jià)格驚喜

REXROTH葉片泵只不過(guò)是離心泵的一種具體應(yīng)用的泵而命名。實(shí)質(zhì)上砂泵只是一個(gè)籠統(tǒng)的叫法。一般主要用在礦業(yè)，煤炭，冶金，化工，環(huán)保等行業(yè)。一般意義的砂泵更多是指用在環(huán)保，挖沙，河道清淤等行業(yè)較多。這個(gè)系列砂泵主要以ES或者G系列的較多。除此之外，叫做砂泵的類型還有很多，石油領(lǐng)域的SB砂泵，礦業(yè)上的PS砂泵系列等等。本文介紹的砂泵主要以通常意義上的ES或G系列的挖沙，環(huán)保行業(yè)的用的砂泵。REXROTH葉片泵均為臥式、單泵殼結(jié)構(gòu)的離心泵。采用特殊的卡箍夾緊泵體與泵蓋，泵的吐出口方向可在360度的任何一個(gè)位置，安裝使用方便。砂泵的軸承組件采用圓筒式結(jié)構(gòu)，便于調(diào)整葉輪與泵體之間的間隙，維修時(shí)可整體拆除。軸承采用油脂潤(rùn)滑。砂泵的軸封形式有填料密封、付葉輪密封、機(jī)械密封。

一、Rexroth力士樂(lè)葉片泵PV7系列的剖面圖
Rexroth力士樂(lè)葉片泵PV7系列的結(jié)構(gòu)，型號(hào)PV7的液壓泵是變量葉片泵。
1、主要由泵體(1)、轉(zhuǎn)子(2)、葉片(3)、定子環(huán)(4)、壓力控制器(5)和調(diào)節(jié)螺栓(6)組成。
2、圓形的定子環(huán)(4)夾持在小調(diào)節(jié)活塞(10)和大調(diào)節(jié)活塞(11)之間。此環(huán)的第三個(gè)接觸點(diǎn)是高度調(diào)節(jié)螺栓(7)。
3、被驅(qū)動(dòng)的轉(zhuǎn)子(2)在定子環(huán)(4)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)(4)上。

二、Rexroth力士樂(lè)葉片泵PV7系列的功能，有下面功能：
1、吸油和排油過(guò)程
a.用來(lái)傳遞油液的腔(8)由葉片(3)、轉(zhuǎn)子(2)、定子環(huán)(4)和配油盤(9)形成。
b.為了在投入使用時(shí)確保泵的運(yùn)行功能，定子環(huán)(4)由大調(diào)節(jié)活塞(11)后面的彈簧(12)壓在其偏心位置(排油位置)。
2、調(diào)節(jié)
a.在系統(tǒng)內(nèi)建壓的同時(shí)，小調(diào)節(jié)活塞(10)的背面通過(guò)油道始終受系統(tǒng)壓力的作用。
b.當(dāng)Rexroth泵排油時(shí)，大調(diào)節(jié)活塞(11)的背面通過(guò)控制閥芯(14)上的孔和系統(tǒng)壓力相連。調(diào)節(jié)活塞(11)的大端面將定子環(huán)(4)壓在偏心位置。
c.Rexroth泵在壓力低于由壓力控制器(5)所設(shè)定的零行程壓力時(shí)排油?？刂崎y芯(14)由彈簧(13[工業(yè)電器網(wǎng)-cnelc])控制在一定的位置。
d.當(dāng)轉(zhuǎn)子(2)轉(zhuǎn)動(dòng)時(shí)，油腔(8)的容積增大，并且通過(guò)吸油通道(S)吸油。當(dāng)油腔(8)達(dá)到zui大容積時(shí)，它脫離吸油側(cè)。轉(zhuǎn)子(2)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(guò)壓油通道(P)壓油到系統(tǒng)。
3、向下調(diào)節(jié)
如果液體壓力x面積的力FP大于相對(duì)的彈簧力FF，則控制閥芯(14)向彈簧(13)側(cè)移動(dòng)。此時(shí)，大調(diào)節(jié)活塞(11)背面的油腔接通油箱并卸荷。始終在系統(tǒng)壓力作用下的小調(diào)節(jié)活塞(10)將定子環(huán)(4)推向其中心位置。Rexroth泵維持一定的壓力，而流量降為零，泄漏得到補(bǔ)償。
功率損失和油液的發(fā)熱很小。qV-p特性曲線為垂直狀，并隨設(shè)定壓力的增高而平行移動(dòng)。
4、向上調(diào)節(jié)
當(dāng)系統(tǒng)壓力降到零行程壓力之下時(shí)，彈簧(13)推動(dòng)控制閥芯(14)回到其原始位置。
大調(diào)節(jié)活塞(11)承受到壓力作用，并推動(dòng)定子環(huán)(4)移向偏心位置。Rexroth泵重新開(kāi)始排油。

力士樂(lè)REXROTH葉片泵R900247239 價(jià)格驚喜

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力士樂(lè)REXROTH葉片泵常用型號(hào)：
力士樂(lè)REXROTH葉片泵現(xiàn)貨型號(hào)：
力士樂(lè)REXROTH葉片泵*型號(hào)：
力士樂(lè)REXROTH葉片泵*型號(hào)：

R900245924 PV7-1X/16-30RE01MC5-08WH
R900247239 PV7-1X/10-20RE01MC5-08WH
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R900516546 PV7-1X/100-118RE07MC5-16
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R900523597 PV7-1X/40-45RE37KC0-16
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R900533296 PV7-1X/16-30RE01MC3-08
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R900535588 PV7-1X/40-71RE37MC0-08
R900537419 PV7-1X/10-14RE01MN0-16
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REXROTH,BOSCH?,VPV80,葉片泵
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