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原裝4WEH16J7X/6EG24N9ETK4 電液閥

承諾：保證原裝*，假一賠十 量大價格好商量！！

武穴黎翔機電設備有限公司REXROTH力士樂銷售部

廣泛應用于鋼鐵、冶金、鋁行業(yè)、石油化工、航天、船舶制造、煤炭、水泥、電力、汽車、工程機械、食品、藥業(yè)、林業(yè)、紡織、皮革、造紙等行業(yè)領域

電磁閥是用電磁的效應進行控制，主要的控制方式由繼電器控制。這樣，電磁閥可以配合不同的電路來實現(xiàn)預期的控制，而控制的精度和靈活性都能夠保證。
　　電磁閥的主要特點
　　(1)外漏堵絕，內漏易控，使用安全。內外泄漏是危及安全的要素。其它自控閥通常將閥桿伸出，由電動、氣動、液動執(zhí)行機構控制閥芯的轉動或移動。這都要解決*動作閥桿動密封的外泄漏難題;唯有電磁閥是用電磁力作用于密封在隔磁套管內的鐵芯完成，不存在動密封，所以外漏易堵絕。電動閥力矩控制不易，容易產生內漏，甚至拉斷閥桿頭部;電磁閥的結構型式容易控制內泄漏，直至降為零。所以，電磁閥使用特別安全，尤其適用于腐蝕性、有毒或高低溫的介質。
　　(2)系統(tǒng)簡單，便接電腦，價格低謙。電磁閥本身結構簡單，價格也低，比起調節(jié)閥等其它種類執(zhí)行器易于安裝維護。更顯著的是所組成的自控系統(tǒng)簡單得多，價格要低得多。由于電磁閥是開關信號控制，與工控計算機連接十分方便。在當今電腦普及，價格大幅下降的時代，電磁閥的優(yōu)勢就更加明顯。
　　(3)動作快遞，功率微小，外形輕巧。電磁閥響應時間可以短至幾個毫秒，即使是先導式電磁閥也可以控制在幾十毫秒內。由于自成回路，比之其它自控閥反應更靈敏。設計得當?shù)碾姶砰y線圈功率消耗很低，屬節(jié)能產品;還可做到只需觸發(fā)動作，自動保持閥位，平時一點也不耗電。電磁閥外形尺寸小，既節(jié)省空間，又輕巧美觀。
　　(4)調節(jié)精度受限，適用介質受限。電磁閥通常只有開關兩種狀態(tài)，閥芯只能處于兩個極限位置，不能連續(xù)調節(jié)，(力圖突破的新構思不少，但還都處于試驗試用階段)所以調節(jié)精度還受到一定限制。電磁閥對介質潔凈度有較高要求，含顆粒狀的介質不能適用，如屬雜質須先濾去。另外，粘稠狀介質不能適用，而且，特定的產品適用的介質粘度范圍相對較窄。
　　(5)型號多樣，用途廣泛。電磁閥雖有先天不足，優(yōu)點仍十分突出，所以就設計成多種多樣的產品，滿足各種不同的需求，用途極為廣泛。電磁閥技術的進步也都是圍繞著如何克服先天不足，如何更好地發(fā)揮固有優(yōu)勢而展開。0810050134 H-4WEH16U1X/6ZG24N9ETK4/B08Z
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R900906426 H-4WEH 22 J7X/6EG24N9K4液壓閥是用來控制液壓系統(tǒng)中油液的流動方向或調節(jié)其壓力和流量的，因此它可分為方向閥、壓力閥和流量閥三大類。一個形狀相同的閥，可以因為作用機制的不同，而具有不同的功能。壓力閥和流量閥利用通流截面的節(jié)流作用控制著系統(tǒng)的壓力和流量，而方向閥則利用通流通道的更換控制著油液的流動方向。這就是說，盡管液壓閥存在著各種各樣不同的類型，它們之間還是保持著一些基本共同之點的。例如：
　　（1）在結構上，所有的閥都有閥體、閥芯（轉閥或滑閥）和驅使閥芯動作的元、部件（如彈簧、電磁鐵）組成
　　（2）在工作原理上，所有閥的開口大小，閥進、出口間壓差以及流過閥的流量之間的關系都符合孔口流量公式，僅是各種閥控制的參數(shù)各不相同而已。
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R901003705 Z4WEH 22 E63-5X/6EW110N9ETS2K4/B10D3
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R901071196 4WEH 22 HD7X/OF6EG24N9ES2K4/B10葉片泵的管理要點除需防干轉和過載、防吸入空氣和吸入真空度過大外，還應注意：
1．泵轉向改變，則其吸排方向也改變葉片泵都有規(guī)定的轉向，不允許反。因為轉子葉槽有傾斜，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、排口是按既定轉向設計。可逆轉的葉片泵必須專門設計。
2．葉片泵裝配 配油盤與定子用定位銷正確定位，葉片、轉子、配油盤都不得裝反，定子內表面吸入?yún)^(qū)部分zui易磨損，必要時可將其翻轉安裝，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，會導致工作失常。
5．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；粘度太小則漏泄嚴重。


一、單作用葉片泵的工作原理
泵由轉子1、定子2、葉片3、配油盤和端蓋等部件所組成。定子的內表面是圓柱形孔。轉子和定子之間存在著偏心。葉片在轉子的槽內可靈活滑動，在轉子轉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表面上，于是兩相鄰葉片、配油盤、定子和轉子間便形成了一個個密封的工作腔。當轉子按逆時針方向旋轉時，圖右側的葉片向外伸出，密封工作腔容積逐漸增大，產生真空，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。葉片往里縮進，密封腔的容積逐漸縮小，密封腔中的油液經配油盤另一窗口和壓油口1被壓出而輸出到系統(tǒng)中去。這種泵在轉子轉一轉過程中，吸油壓油各一次，故稱單作用泵。轉子受到徑向液壓不平衡作用力，故又稱非平衡式泵，其軸承負載較大。改變定子和轉子間的偏心量，便可改變泵的排量，故這種泵都是變量泵。
二、雙作用葉片泵的工作原理
它的作用原理和單作用葉片泵相似，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，且定子和轉子是同心的。在圖示轉子順時針方向旋轉的情況下，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。這種泵的轉子每轉一轉，每個密封工作腔完成吸油和壓油動作各兩次，所以稱為雙作用葉片泵。泵的兩個吸油區(qū)和兩個壓油區(qū)是徑向對稱的，作用在轉子上的液壓力徑向平衡，所以又稱為平衡式葉片泵。
雙作用葉片泵的瞬時流量是脈動的，當葉片數(shù)為4的倍數(shù)時脈動率小。為此，雙作用葉片泵的葉片數(shù)一般都取12或16。我們主營的產品：原裝德國BOSCH REXROTH(博世-力士樂)液壓閥，柱塞泵，馬達. Rexroth力士樂
力士樂葉片泵
PV7-1X/10-14RE01MC0-16,
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