液壓泵是液壓系統的動力元件，其功用是給液壓系統提供壓力油，從能量轉換角度講，它將是原動機（如發動機）輸出的機械能轉換為便于輸送的液體的壓力能。液壓馬達則屬于執行元件，它能將輸入液體的壓力能轉換為輸出軸轉動的機械能，用來拖動負載做功。根據結構形式，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。
德國4WE6D73-6X/EG24N9K4/A12現貨銷售

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，按試驗標準規定能連續運轉的高壓力。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計的壽命短。當工作壓力大于額定壓力時稱超載。

德國4WE6D73-6X/EG24N9K4/A12現貨銷售

2.轉速

工作轉速是指泵（或馬達）在工作時的實際轉動速度。

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

低穩定轉速是指馬達正常運轉所允許的低轉速。在此轉速下，馬達不出現爬行現象。

3.排量、流量

排量是指泵（或馬達）每轉一周，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）。排量可以通過調節發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。由于泵本身存在內泄漏，其實際流量小于理論流量。由于馬達本身也存在內泄漏，要實現使用轉速，為補償泄漏量，其輸入實際流量大于理論流量。
德國4WE6D73-6X/EG24N9K4/A12現貨銷售

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

總效率是指泵（或馬達）的輸出功率與輸入功率的比值?？傂实扔谌莘e效率與機械效率的乘積。

葉片泵安裝要求

1.泵轉向改變，則其吸排方向也改變葉片泵都有規定的轉向，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，配油盤上的節流槽和吸、排口是按既定轉向設計?？赡孓D的葉片泵專門設計。

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，定子內表面吸入區部分易磨損，必要時可將其翻轉安裝，以使原吸入區變為排出區而繼續使用。

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。

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。

公稱規格10到25，1X/2X系列；工作壓力100bar；

規格排量：10/14/20/25，流量；14.5/20/29/36L/min；

機型規格BG06/06/20/20-公稱規格NS10/14/20/25等于規格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型機型規格與公稱規格；

06-10/06-14/20-20/20-25；

泵從軸端看所適用的旋轉方向是向右R順時針，兩種驅動軸A圓柱形驅動軸和E圓柱形驅動軸帶通軸驅動；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；

三種泵的調節元件：0調節螺釘標準型，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，轉子，葉片，定子環，壓縮彈簧，調節螺釘和配油盤等組成。

德國4WE6D73-6X/EG24N9K4/A12現貨銷售且向前推鋸，拉回時需輕輕提起。扳手應按工作性質選擇適當尺寸的扳手。使用活動扳手時應向固定邊施力，絕不可朝活動邊用力。扳手開口若有磨損或使用時有打滑現象時，不可再繼續使用，以免打滑傷手。不可用扳手當作鐵陲敲擊。不可在扳手柄端再套上管子來增加扳手的扭力。起子應配合螺絲頭溝槽之大小形狀，選用適當之起子。起子手柄不可用榔頭敲擊，手柄損壞者應立即汰換。不可將起子當作鏨子或杠桿使用。檢驗電流應用電工起子，不可用一般起子檢驗高壓電。
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