原裝4WE6L6X/EG24N9K4大量現(xiàn)貨

液壓泵是液壓系統(tǒng)的動力元件，其功用是給液壓系統(tǒng)提供壓力油，從能量轉(zhuǎn)換角度講，它將是原動機（如發(fā)動機）輸出的機械能轉(zhuǎn)換為便于輸送的液體的壓力能。液壓馬達則屬于執(zhí)行元件，它能將輸入液體的壓力能轉(zhuǎn)換為輸出軸轉(zhuǎn)動的機械能，用來拖動負載做功。根據(jù)結(jié)構(gòu)形式，液壓泵與液壓馬達具體可分為齒輪式、葉片式、柱塞式等類型。
原裝4WE6L6X/EG24N9K4大量現(xiàn)貨

1.液壓泵壓力

液壓泵工作壓力是指泵（或馬達）在實際工作時輸出（或輸入）油液的壓力，由外負載決定。

額定壓力是指在正常工作條件下，按試驗標準規(guī)定能連續(xù)運轉(zhuǎn)的高壓力。其大小受壽命的限制，若超過額定壓力工作，泵（或馬達）的使用壽命將會比設(shè)計的壽命短。當工作壓力大于額定壓力時稱超載。

原裝4WE6L6X/EG24N9K4大量現(xiàn)貨

2.轉(zhuǎn)速

工作轉(zhuǎn)速是指泵（或馬達）在工作時的實際轉(zhuǎn)動速度。

額定轉(zhuǎn)速是指在額定壓力下，能連續(xù)長時間正常運轉(zhuǎn)的高轉(zhuǎn)速。若泵超過額定轉(zhuǎn)速工作將會造成吸油不足，產(chǎn)生振動和大的噪聲，零件會遭受氣蝕損傷，壽命降低。

低穩(wěn)定轉(zhuǎn)速是指馬達正常運轉(zhuǎn)所允許的低轉(zhuǎn)速。在此轉(zhuǎn)速下，馬達不出現(xiàn)爬行現(xiàn)象。

3.排量、流量

排量是指泵（或馬達）每轉(zhuǎn)一周，由密封容腔幾何尺寸變化而得的排出（或輸入）液體的體積，常用單位是ml/r（毫升/轉(zhuǎn)）。排量可以通過調(diào)節(jié)發(fā)生變化的成為變量泵（或變量馬達），排量不能變化的成為定量泵（或定量馬達）。

實際流量是指泵（或馬達）工作時出口處（或進口處）的流量。由于泵本身存在內(nèi)泄漏，其實際流量小于理論流量。由于馬達本身也存在內(nèi)泄漏，要實現(xiàn)使用轉(zhuǎn)速，為補償泄漏量，其輸入實際流量大于理論流量。
原裝4WE6L6X/EG24N9K4大量現(xiàn)貨

4.效率

容積效率，對液壓泵是指其實際流量與理論流量的比值。對液壓馬達是指其理論流量與實際流量的比值。

機械效率，對液壓泵是指其理論轉(zhuǎn)矩與實際輸入轉(zhuǎn)矩的比值。對液壓馬達其實際輸出的轉(zhuǎn)矩為理論轉(zhuǎn)矩克服摩擦力后的轉(zhuǎn)矩，因此其機械效率為實際輸出轉(zhuǎn)矩與理論轉(zhuǎn)矩的比值。

總效率是指泵（或馬達）的輸出功率與輸入功率的比值。總效率等于容積效率與機械效率的乘積。

葉片泵安裝要求

1.泵轉(zhuǎn)向改變，則其吸排方向也改變?nèi)~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。可逆轉(zhuǎn)的葉片泵專門設(shè)計。

2.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。

葉片泵

PV7…A型直接控制變量葉片泵；

PV7…A型液壓泵是直接控制（手動）的變量葉片泵。

公稱規(guī)格10到25，1X/2X系列；工作壓力100bar；

規(guī)格排量：10/14/20/25，流量；14.5/20/29/36L/min；

機型規(guī)格BG06/06/20/20-公稱規(guī)格NS10/14/20/25等于規(guī)格10/14/20/25；

PV7…A型直接控制變量葉片泵：在工作時擁有很短的控制時間，運行時候噪聲低，泵的裝配和連接尺寸符合VDMA 24 560/1和ISO 3019/2標準；

PV7葉片泵擁有的工作效率，工作時效率高，可以長時間使用的壽命長，是一個可變排量泵；

PV7…A直接控制葉片泵：PV7…A型帶1X系列BS 06（10到29），和2X系列BS 20（20到29）；

PV7…A型葉片泵用于兩種BG和NS型機型規(guī)格與公稱規(guī)格；

06-10/06-14/20-20/20-25；

泵從軸端看所適用的旋轉(zhuǎn)方向是向右R順時針，兩種驅(qū)動軸A圓柱形驅(qū)動軸和E圓柱形驅(qū)動軸帶通軸驅(qū)動；油管連接01是進，出油的連接；

葉片泵的密封元件用于NBR密封M，和FKM軸封K密封；

三種泵的調(diào)節(jié)元件：0調(diào)節(jié)螺釘標準型，3的一次帶可斷的可鎖旋鈕，3帶鎖的控制器；

PV7型變量葉片泵多種零排量壓力范圍：05/10/04/07/02/05/10/；

變量葉片泵PV7…A型直接控制：泵主要是由泵體，端蓋，轉(zhuǎn)子，葉片，定子環(huán)，壓縮彈簧，調(diào)節(jié)螺釘和配油盤等組成。

原裝4WE6L6X/EG24N9K4大量現(xiàn)貨不銹鋼內(nèi)六角螺釘主要用于：環(huán)保設(shè)備、設(shè)備、通訊設(shè)備、電力設(shè)施、電子產(chǎn)品、食品機械、石油化工、船舶裝配、泵閥管道、建筑幕墻、露天場合等。選材原則不銹鋼螺絲選材原則：不銹鋼材料的選擇主要從以下五方面來考慮。對不銹鋼螺絲材料在機械性能方面，特別是強度方面的要求；工況條件對材料的抗腐蝕性能方面的要求；工作溫度對材料的耐熱性能（高溫強度、抗氧化性能）方面的要求；生產(chǎn)工藝方面對材料加工性能方面的要求；其它方面，重量、價格、采購諸因素都要考慮。
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