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品牌 | VICKERS/美國威格士 | 應(yīng)用領(lǐng)域 | 醫(yī)療衛(wèi)生,食品,化工,農(nóng)業(yè),綜合 |
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VICKERS三聯(lián)泵上海倉庫一手貨源
上海維特銳實業(yè)發(fā)展有限公司是中國工業(yè)控制自動化領(lǐng)域*的服務(wù)貿(mào)易商,專業(yè)從事各種國外中的工控自動化產(chǎn)品的進口貿(mào)易與工程服務(wù), 公司主要經(jīng)營來自歐洲、美國、日本等國的高精密編碼器、傳感器、儀器儀表及各類自動化產(chǎn)品。
VICKERS威格士是伊頓集團流體動力部門旗下的一個全球有名的液壓品牌,其主要產(chǎn)品包括液壓泵、馬達、油缸、液壓閥等。
泵由轉(zhuǎn)子2、定子3、葉片4、配油盤和端蓋等部件所組成。定子的內(nèi)表面是圓柱形孔。轉(zhuǎn)子和定子之間存在著偏心。葉片在轉(zhuǎn)子的槽內(nèi)可靈活滑動,在轉(zhuǎn)子轉(zhuǎn)動時的離心力以及通入葉片根部壓力油的作用下,葉片頂部貼緊在定子內(nèi)表面上,于是兩相鄰葉片、配油盤、定子和轉(zhuǎn)子間便形成了一個個密封的工作腔。當(dāng)轉(zhuǎn)子按逆時針方向旋轉(zhuǎn)時,圖右側(cè)的葉片向外伸出,密封工作腔容積逐漸增大,產(chǎn)生真空,于是通過吸油口6和配油盤5上窗口將油吸入。而在圖的左側(cè)。葉片往里縮進,密封腔的容積逐漸縮小,密封腔中的油液經(jīng)配油盤另一窗口和壓油口1被壓出而輸出到系統(tǒng)中去。這種泵在轉(zhuǎn)子轉(zhuǎn)一轉(zhuǎn)過程中,吸油壓油各一次,故稱單作用泵。轉(zhuǎn)子受到徑向液壓不平衡作用力,故又稱非平衡式泵,其軸承負(fù)載較大。改變定子和轉(zhuǎn)子間的偏心量,便可改變泵的排量,故這種泵都是變量泵。
VICKERS三聯(lián)泵
它的作用原理和單作用Vickers葉片泵相似,不同之處只在于定子表面是由兩段長半徑圓弧、兩段短半徑圓弧和四段過渡曲線八個部分組成,且定子和轉(zhuǎn)子是同心的。在圖示轉(zhuǎn)子順時針方向旋轉(zhuǎn)的情況下,密封工作腔的容積在左上角和右下角處逐漸增大,為吸油區(qū),在左下角和右上角處逐漸減小,為壓油區(qū);吸油區(qū)和壓油區(qū)之間有一段封油區(qū)把它們隔開。這種泵的轉(zhuǎn)子每轉(zhuǎn)一轉(zhuǎn),每個密封工作腔完成吸油和壓油動作各兩次,所以稱為雙作用Vickers葉片泵。泵的兩個吸油區(qū)和兩個壓油區(qū)是徑向?qū)ΨQ的,作用在轉(zhuǎn)子上的液壓力徑向平衡,所以又稱為平衡式Vickers葉片泵。
雙作用Vickers葉片泵的瞬時流量是脈動的,當(dāng)葉片數(shù)為4的倍數(shù)時脈動率小。為此,雙作用Vickers葉片泵的葉片數(shù)一般都取12或16。
Vickers葉片泵的管理要點除需防干轉(zhuǎn)和過載、防吸入空氣和吸入真空度過大外,還應(yīng)注意:
1.泵轉(zhuǎn)向改變,則其吸排方向也改變Vickers葉片泵都有規(guī)定的轉(zhuǎn)向,不允許反。因為轉(zhuǎn)子葉槽有傾斜,葉片有倒角,葉片底部與排油腔通,配油盤上的節(jié)流槽和吸、排口是按既定轉(zhuǎn)向設(shè)計??赡孓D(zhuǎn)的Vickers葉片泵必須專門設(shè)計。
2.Vickers葉片泵裝配配油盤與定子用定位銷正確定位,葉片、轉(zhuǎn)子、配油盤都不得裝反,定子內(nèi)表面吸入?yún)^(qū)部分zui易磨損,必要時可將其翻轉(zhuǎn)安裝,以使原吸入?yún)^(qū)變?yōu)榕懦鰠^(qū)而繼續(xù)使用。
3.拆裝注意工作表面清潔,工作時油液應(yīng)很好過濾。
4.葉片在葉槽中的間隙太大會使漏泄增加,太小則葉片不能自由伸縮,會導(dǎo)致工作失常。
5.Vickers葉片泵的軸向間隙對ηv影響很大。
1)小型泵-0.015~0.03mm
2)中型泵-0.02~0.045mm
6.油液的溫度和粘度一般不宜超過55℃,粘度要求在17~37mm2/s之間。粘度太大則吸油困難;粘度太小則漏泄嚴(yán)重。
VICKERS三聯(lián)泵
作為泵產(chǎn)品,Vickers葉片泵更多地指滑片泵。只要你有興趣在 搜索發(fā)現(xiàn),Vickers葉片泵幾乎全部指滑片泵。
Vickers葉片泵常見故障及排除方法是什么?
(1)流量不足。Vickers葉片泵流量不足的原因及排除方法見表1-6。
表1-6Vickers葉片泵流量不足的原因及排除方法
常見故障及其原因排除方法
頂蓋處螺絲松動,軸向間隙增大,容積效率下降適當(dāng)擰緊螺釘,保證間隙均勻、適當(dāng)(間隙為0.04~0.07mm)
個別葉片滑動不靈活清洗。清洗后仍不靈活時,應(yīng)單槽調(diào)配,使葉片在自重狀態(tài)下能慢慢地自動下落為宜(間隙為0.015~0.025mm)
定子內(nèi)表面磨損,葉片不能與定子內(nèi)表面良好接觸定子內(nèi)表面磨損一般在吸油腔處,對于已預(yù)加工銷孔的定子可翻轉(zhuǎn)180°使用,否則更換新零件
配流盤端面磨損嚴(yán)重更換
葉片與轉(zhuǎn)子裝反使葉片傾角方向和轉(zhuǎn)子的旋轉(zhuǎn)方向*
系統(tǒng)泄漏大逐個元件檢査泄漏,同時檢查壓力表是否被臟物堵塞
(2)油液吸不上。Vickers葉片泵油吸不上的原因和排除方法見表1-7。
表1-7Vickers葉片泵油吸不上的原因和排除方法
常見故障及其原因排除方法
油面過低,油液吸不上檢査并加注到規(guī)定油標(biāo)線
油液黏度過大,使葉片在轉(zhuǎn)子槽內(nèi)滑動不
靈活一般用20#液壓油或22#汽輪機油
配油盤端面與殼體內(nèi)平面接觸不良,高低壓腔串通整修配油盤端面
泵體內(nèi)部有砂眼,高低壓腔串通更換
電動機轉(zhuǎn)向反了糾正
定量定量泵泵是每轉(zhuǎn)的理論排量不變的泵。
VICKERS三聯(lián)泵上海倉庫一手貨源
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