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PVB20-RS40- 威格士VICKERS齒輪泵全系列
- 型 號(hào):
- 更新時(shí)間:2018-03-14
PVB20-RS40- 威格士VICKERS齒輪泵全系列 :陳價(jià)注意事項(xiàng):1.請(qǐng)?zhí)峁?列的物料編號(hào)和第二列具體型號(hào) 2.請(qǐng)發(fā)書(shū)面詢價(jià)函(郵件,,傳真等),不接受口頭報(bào)價(jià)。 3.如果型號(hào)不能*對(duì)上,請(qǐng)?zhí)峁┯⑽钠放泼?具體型號(hào)+數(shù)量。 4.詢價(jià)的商友請(qǐng)主動(dòng)告知公司名稱和,謝謝。
PVB20-RS40- 威格士VICKERS齒輪泵全系列
PVB20-RS40- 威格士VICKERS齒輪泵全系列
PVB20-RS40- 威格士VICKERS齒輪泵全系列
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價(jià)注意事項(xiàng):1.請(qǐng)?zhí)峁?列的物料編號(hào)和第二列具體型號(hào)
2.請(qǐng)發(fā)書(shū)面詢價(jià)函(郵件,,傳真等),不接受口頭報(bào)價(jià)。
3.如果型號(hào)不能*對(duì)上,請(qǐng)?zhí)峁┯⑽钠放泼?具體型號(hào)+數(shù)量。
4.詢價(jià)的商友請(qǐng)主動(dòng)告知公司名稱和,謝謝。
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PVB20-RS40-PVB5RS40CM11,PVB6RS40CM11,PVB10RS40CM11,PVB15RS40CM11,PVB20RS40CM11, PVB29RS40CM11,PVB45RS40CM11,PVB5RS41CM11,PVB6RS41CM11,PVB10RS41CM11, PVB15RS41CM11,PVB20RS41CM11,PVB29RS41CM11,PVB45RS41CM11,PVB5RS40CM12, PVB6RS40CM12,PVB10RS40CM12,PVB15RS40CM12,PVB20RS40CM12,PVB29RS40CM12, PVB45RS40CM12,PVB5RS41CM12,PVB6RS41CM12,PVB10RS41CM12,PVB15RS41CM12, PVB20RS41CM12,PVB29RS41CM12,PVB45RS41CM12,PVB45ARCMA70, PVB5-RS-40-MCM-11,PVB6-RS-40-MCM-11,PVB10-RS-40-MCM-11,PVB15-RS-40-MCM-11,PVB20-RS-40-MCM-11,PVB29-RS-40-MCM-11,PVB45-RS-40-MCM-11,PVB5-RS-41-MCM-11,PVB6-RS-41-MCM-11,PVB10-RS-41-MCM-11,PVB15-RS-41-MCM-11,PVB20-RS-41-MCM-11,PVB29-RS-41-MCM-11,PVB45-RS-41-MCM-11,PVB5-RS-40-MCM-12, PVB6-RS-40-MCM-12,PVB10-RS-40-MCM-12,PVB15-RS-40-MCM-12,PVB20-RS-40-MCM-12,PVB29-RS-40-MCM-12,PVB45-RS-40-MCM-12,PVB5-RS-41-MCM-12,PVB6-RS-41-MCM-12,PVB10-RS-41-MCM-12,PVB15-RS-41-MCM-12,PVB20-RS-41-MCM-12, PVB29-RS-41-MCM-12,PVB45-RS-41-MCM-12,PVB5-RS40-MCM11,PVB6-RS40-MCM11, PVB10-RS40-MCM11,PVB15-RS40-MCM11,PVB20-RS40-MCM11,PVB29-RS40-MCM11, PVB45-RS40-MCM11,PVB5-RS41-MCM11,PVB6-RS41-MCM11,PVB10-RS41-MCM11, PVB15-RS41-MCM11,PVB20-RS41-MCM11,PVB29-RS41-MCM11,PVB45-RS41-MCM11, PVB5-RS40-MCM12,PVB6-RS40-MCM12,PVB10-RS40-MCM12,PVB15-RS40-MCM12, PVB20-RS40-MCM12,PVB29-RS40-MCM12,PVB45-RS40-MCM12,PVB5-RS41-MCM12, PVB6-RS41-MCM12,PVB10-RS41-MCM12,PVB15-RS41-MCM12,PVB20-RS41-MCM12, PVB29-RS41-MCM12,PVB45-RS41-MCM12, PVB5RS40MCM11,PVB6RS40MCM11,PVB10RS40MCM11,PVB15RS40MCM11, PVB20RS40MCM11,PVB29RS40MCM11,PVB45RS40MCM11,PVB5RS41MCM11, PVB6RS41MCM11,PVB10RS41MCM11,PVB15RS41MCM11,PVB20RS41MCM11, PVB29RS41MCM11,PVB45RS41MCM11,PVB5RS40MCM12,PVB6RS40MCM12, PVB10RS40MCM12,PVB15RS40MCM12,PVB20RS40MCM12,PVB29RS40MCM12, PVB45RS40MCM12,PVB5RS41MCM12,PVB6RS41MCM12,PVB10RS41MCM12, PVB15RS41MCM12,PVB20RS41MCM12,PVB29RS41MCM12,PVB45RS41MCM12
威格士變量柱塞泵
威格士變量柱塞泵是往復(fù)泵的一種,屬于體積泵,其柱塞靠泵軸的偏心轉(zhuǎn)動(dòng)驅(qū)動(dòng),往復(fù)運(yùn)動(dòng),其吸入和排出閥都是單向閥。當(dāng)柱塞外拉時(shí),工作室內(nèi)壓力降低,出口閥關(guān)閉,低于進(jìn)口壓力時(shí),進(jìn)口閥打開(kāi),液體進(jìn)入;柱塞內(nèi)推時(shí),工作室壓力升高,進(jìn)口閥關(guān)閉,高于出口壓力時(shí),出口閥打開(kāi),液體排出。帶滑靴結(jié)構(gòu)的軸向柱塞泵是目前使用zui廣泛的軸向柱塞泵,安放在缸體中的柱塞通過(guò)滑靴與斜盤(pán)相接觸,當(dāng)傳動(dòng)軸帶動(dòng)缸體旋轉(zhuǎn)時(shí),斜盤(pán)將柱塞從缸體中拉出或推回,完成吸排油過(guò)程。柱塞與缸孔組成的工作容腔中的油液通過(guò)配油盤(pán)分別與泵的吸、排油腔相通。變量機(jī)構(gòu)用來(lái)改變斜盤(pán)的傾角,通過(guò)調(diào)節(jié)斜盤(pán)的傾角可改變泵的排量。
概述
威格士變量柱塞泵柱塞往復(fù)運(yùn)動(dòng)總行程L是不變的,由凸輪的升程決定。柱塞每循環(huán)的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的。供油開(kāi)始時(shí)刻不隨供油行程的變化而變化。轉(zhuǎn)動(dòng)柱塞可改變供油終了時(shí)刻,從而改變供油量。柱塞泵工作時(shí),在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下,迫使柱塞作上、下往復(fù)運(yùn)動(dòng),從而完成泵油任務(wù),泵油過(guò)程可分為以下三個(gè)階段。
進(jìn)油過(guò)程
當(dāng)凸輪的凸起部分轉(zhuǎn)過(guò)去后,在彈簧力的作用下,柱塞向下運(yùn)動(dòng),柱塞上部空間(稱為泵油室)產(chǎn)生真空度,當(dāng)柱塞上端面把柱塞套上的進(jìn)油孔打開(kāi)后,充滿在油泵上體油道內(nèi)的柴油經(jīng)油孔進(jìn)入泵油室,柱塞運(yùn)動(dòng)到下止點(diǎn),進(jìn)油結(jié)束。
供油過(guò)程
當(dāng)凸輪軸轉(zhuǎn)到凸輪的凸起部分頂起滾輪體時(shí),柱塞彈簧被壓縮,柱塞向上運(yùn)動(dòng),燃油受壓,一部分燃油經(jīng)油孔流回噴油泵上體油腔。當(dāng)柱塞頂面遮住套筒上進(jìn)油孔的上緣時(shí),由于柱塞和套筒的配合間隙很?。?.0015-0.0025mm)使柱塞頂部的泵油室成為一個(gè)密封油腔,柱塞繼續(xù)上升,泵油室內(nèi)的油壓迅速升高,泵油壓力>出油閥彈簧力+高壓油管剩余壓力時(shí),推開(kāi)出油閥,高壓柴油經(jīng)出油閥進(jìn)入高壓油管,通過(guò)噴油器噴入燃燒室。
回油過(guò)程
柱塞向上供油,當(dāng)上行到柱塞上的斜槽(停供邊)與套筒上的回油孔相通時(shí),泵油室低壓油路便與柱塞頭部的中孔和徑向孔及斜槽溝通,油壓驟然下降,出油閥在彈簧力的作用下迅速關(guān)閉,停止供油。此后柱塞還要上行,當(dāng)凸輪的凸起部分轉(zhuǎn)過(guò)去后,在彈簧的作用下,柱塞又下行。此時(shí)便開(kāi)始了下一個(gè)循環(huán)。
變量柱塞泵以一個(gè)柱塞為原理介紹,一個(gè)柱塞泵上有兩個(gè)單向閥,并且方向相反,柱塞向一個(gè)方向運(yùn)動(dòng)時(shí)缸內(nèi)出現(xiàn)負(fù)壓,這時(shí)一個(gè)單向閥打開(kāi)液體被吸入缸內(nèi),柱塞向另一個(gè)方向運(yùn)動(dòng)時(shí),將液體壓縮后另一個(gè)單向閥被打開(kāi),被吸入缸內(nèi)的液體被排出。這種工作方式連續(xù)運(yùn)動(dòng)后就形成了連續(xù)供油 。
PVB20-RS40-