VICKERS柱塞泵的維修與保養
液壓柱塞泵
威格士液壓柱塞泵靠氣壓供油的液壓油箱,在每次啟動機器后,必須等液壓漬箱達到使用氣壓后,才能操作機械。直軸斜盤式柱塞泵分為壓力供油型的自吸油型兩種。壓力供油型液壓泵大都采用有氣壓的油箱,也有液壓泵本身帶有補油分泵向液壓泵進油口提供壓力油的。自吸油型液壓泵的自吸油能力很強,無需外力供油。對于自吸油型柱塞泵,液壓油箱內的油液不得低于油標下限,要保持足夠數量的液壓油。液壓油的清潔度越高,液壓泵的使用壽命越長。
威格士柱塞泵工作原理編輯
威格士柱塞泵是往復泵的一種,屬于體積泵,其柱塞靠泵軸的偏心轉動驅動,往復運動,其吸入和排出閥都是單向閥。當柱塞外拉時,工作室內壓力降低,出口閥關閉,低于進口壓力時,進口閥打開,液體進入;柱塞內推時,工作室壓力升高,進口閥關閉,高于出口壓力時,出口閥打開,液體排出。帶滑靴結構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滑靴與斜盤相接觸,當傳動軸帶動缸體旋轉時,斜盤將柱塞從缸體中拉出或推回,完成吸排油過程。柱塞與缸孔組成的工作容腔中的油液通過配油盤分別與泵的吸、排油腔相通。變量機構用來改變斜盤的傾角,通過調節斜盤的傾角可改變泵的排量。
威格士柱塞泵柱塞往復運動行程L是不變的,由凸輪的升程決定。柱塞每循環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。供油開始時刻不隨供油行程的變化而變化。轉動柱塞可改變供油終了時刻,從而改變供油量。柱塞泵工作時,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、下往復運動,從而完成泵油任務,泵油過程可分為以下三個階段。
進油過程
當凸輪的凸起部分轉過去后,在彈簧力的作用下,柱塞向下運動,柱塞上部空間(稱為泵油室)產生真空度,當柱塞上端面把柱塞套上的進油孔打開后,充滿在油泵上體油道內的柴油經油孔進入泵油室,柱塞運動到下止點,進油結束。
供油過程
當凸輪軸轉到凸輪的凸起部分頂起滾輪體時,柱塞彈簧被壓縮,柱塞向上運動,燃油受壓,一部分燃油經油孔流回噴油泵上體油腔。當柱塞頂面遮住套筒上進油孔的上緣時,由于柱塞和套筒的配合間隙很小(0.0015-0.0025mm)使柱塞頂部的泵油室成為一個密封油腔,柱塞繼續上升,泵油室內的油壓迅速升高,泵油壓力>出油閥彈簧力+高壓油管剩余壓力時,推開出油閥,高壓柴油經出油閥進入高壓油管,通過噴油器噴入燃燒室。
VICKERS柱塞泵的維修與保養
柱塞泵的維護編輯
威格士斜盤式軸向柱塞泵一般采用缸體轉動、端面配流的形式。缸體端面上鑲有一塊由雙金屬板與鋼配油盤組成的摩擦副,而且大多數是采用平面配流的方法,所以維修比較方便。配油盤是軸向柱塞泵的關鍵部件之一,泵工作時,一方面工作腔的高壓油把缸體推向配油盤,另一方面配油盤和缸體間的油膜壓力形成對缸體的液壓反推力使缸體背離配油盤。缸體對配油盤的設計液壓壓緊力Fn略大于配油盤對缸體的液壓反推力Ff,即Fn/Ff=1.05~1.1,使泵工作正常并保持較高的容積效率。 實際上,由于油液的污染,往往使配油盤與缸體之間產生輕微磨損。
我公司專業經營美國VICKERS系列(Q)V10、V20 、20V、25V、35V、45V雙聯葉片泵:2520V、3520V、3525V、4520V、4525V、4535V變量柱塞泵:
PVQ系列:PVQ5、PVQ10、PVQ15、PVQ20、PVQ25、PVQ29、PVQ45
PVB系列:PVB5、PVB10、PVB15、PVB20、PVB25、PVB29、PVB45
PVH系列:PVH57、PVH74、PVH98、PVH131、PVH141等
PFB柱塞泵:PFB5、PFB10、PFB20、PFB45,PFB5-FRY-22-S124
軸向柱塞泵:PVB5/6、PVB10/15、PVB20/29、PVB45、PVB90;PVB20-F-MRSFXN-10-CM-CVP-C-G-L-11-GE1
PV/PF柱塞泵:PF066、PF090、PF130、PF180、PF250、PV066、PV090、PV130、PV180、PV250;PV 060M2 R 1A 1A 1N1V20EU17**10 PV250、PV360、PV500、PV750、PF250、PF360、PF500、PF750、TPV130、TPV180、TPV250、TPV360、TPV500、TPF130、TPF180、TPF250、TPF360、TPF500;PV 250M 7R1N1R1S1V30EU11DP11
PVH柱塞泵:PVH57QIC,PVH63QIC,PVH74QIC,PVH81QIC,PVH98QIC,PVH106QIC,PVH131QIC PVH141QICPVH074R13AA10B252000001AF1AB 010A 及PVM018/020、PVM045/050、PVM057/063、PVM131/141、PVQ10、PVQ13、PVQ16、PVQ20、PVQ25、PVQ32、PVQ40、PVQ45、PVQ63
VICKERS油泵-2520V17A5-1AA-22R
VICKERS油泵-2520V17A5-1AA-22R
VICKERS油泵-2520V17A5-1AA-22R
美國威格士液壓泵2520V17A5-1AA-22R
2520V-21A5-1CC-22R
PVQ32-B2R-SE1S-21-CM7-12
PVQ32-B2R-SS1S-21-CM7-12
PVQ32-B2R-SS1S-21-C1-4-12
PVQ40-MBR-SSNS-10-CM710
4535V60A25-1AA-22R
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4525V60A12-1AA-22R
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VICKERS柱塞泵的維修與保養