ZDB10VA2-4X/200V力士樂溢流閥

ZDB10VA2-4X/200V力士樂溢流閥 德國博世力士樂REXROTH溢流閥 電磁方向閥

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ZDB10VA2-4X/200V力士樂溢流閥

DBD 類型的溢流閥是直接操作式座閥。

它們用于限制系統(tǒng)壓力。

這些閥門的基本組成部件為：套筒（1），彈簧（2），帶阻尼

活塞的提升閥（3）（壓力等級 25 到 400 bar）或滾珠（4）

（壓力等級 630 bar）以及調(diào)節(jié)元件（5）。系統(tǒng)壓力可由調(diào)節(jié)

元件（5）不斷地改變。彈簧（2）將提升閥（3）或滾珠（4）

按壓到其座上。通道 P 與系統(tǒng)連接。系統(tǒng)中的主要壓力作用于

提升閥區(qū)域（或滾珠）。

如果通道 P 中的壓力上升并超過彈簧（2）上設(shè)定的值，則提

升閥（3）或滾珠（4）背向彈簧（2）打開。液壓油現(xiàn)在可以

從通道 P 流入通道 T。提升閥（3）的位移受到凸起（6）的

限制。

為了在整個(gè)壓力范圍上得到良好壓力設(shè)置，將整個(gè)壓力范圍再

分為了 7 個(gè)壓力等級。一個(gè)壓力等級對應(yīng)一個(gè)特定的彈簧，該

彈簧可用于設(shè)置較大工作壓力。

ZDB10VA2-4X/200V力士樂溢流閥

溢流閥是一種液壓壓力控制閥。在液壓設(shè)備中主要起定壓溢流作用，穩(wěn)壓，系統(tǒng)卸荷和安全保護(hù)作用。 　定壓溢流作用：在定量泵節(jié)流調(diào)節(jié)系統(tǒng)中，定量泵提供的是恒定流量。當(dāng)系統(tǒng)壓力加大時(shí)，會使流量需求減小。此時(shí)溢流閥開啟，使多余流量溢回油箱，保證溢流閥進(jìn)口壓力，即泵出口壓力恒定（閥口常隨壓力波動(dòng)開啟）。 　　

穩(wěn)壓作用：溢流閥串聯(lián)在回油路上，溢流閥產(chǎn)生背壓運(yùn)動(dòng)部件平穩(wěn)性增加。 　　

系統(tǒng)卸荷作用：在溢流閥的遙控口串接溢小流量的電磁閥，當(dāng)電磁鐵通電時(shí)，溢流閥的遙控口通油箱，此時(shí)液壓泵卸荷。溢流閥此時(shí)作為卸荷閥使用。 　　

安全保護(hù)作用：系統(tǒng)正常工作時(shí)，閥門關(guān)閉。只有負(fù)載超過規(guī)定的較限（系統(tǒng)壓力超過調(diào)定壓力）時(shí)開啟溢流，進(jìn)行過載保護(hù)，使系統(tǒng)壓力不再增加（通常使溢流閥的調(diào)定壓力比系統(tǒng)較高工作壓力高10%～20%）。

 　　

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先導(dǎo)式溢流閥有一個(gè)遠(yuǎn)程控制口Ｋ，如果將K口用油管接到另一個(gè)遠(yuǎn)程調(diào)壓閥（遠(yuǎn)程調(diào)壓閥的結(jié)構(gòu)和溢流閥的先導(dǎo)控制部分一樣），調(diào)節(jié)遠(yuǎn)程調(diào)壓閥的彈簧力，即可調(diào)節(jié)溢流閥主閥芯上端的液壓力，從而對溢流閥的溢流壓力實(shí)現(xiàn)遠(yuǎn)程調(diào)壓。但是，遠(yuǎn)程調(diào)壓閥所能調(diào)節(jié)的較高壓力不得超過溢流閥本身導(dǎo)閥的調(diào)整壓力。當(dāng)遠(yuǎn)程控制口K通過二位二通閥接通油箱時(shí)，主閥芯上端的壓力接近于零，主閥芯上移到較高位置．閥口開得很大。由于主閥彈簧較軟，這時(shí)溢流閥ｐ口處壓力很低,系統(tǒng)的油在低壓下通過溢流閥流回油箱，實(shí)現(xiàn)卸荷。

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R900409959 ZDB10VP2-4X/100V

R901136398 ZDB10VP2-4X/160V

R900428468 ZDB10VP2-4X/200

R900521040 ZDB10VP2-4X/200SO280

R900440299 ZDB10VP2-4X/200SO450

R900929776 ZDB10VP2-4X/200JV

R900409937 ZDB10VP2-4X/200V

R900425927 ZDB10VP2-4X/315

R900563544 ZDB10VP2-4X/315MIL15

R900786688 ZDB10VP2-4X/315-210

R900786687 ZDB10VP2-4X/315-225

R901020262 ZDB10VP2-4X/315-245

R901370272 ZDB10VP2-4X/315P250V

R901364367 ZDB10VP2-4X/315P270V

R900409958 ZDB10VP2-4X/315V

R900534185 ZDB10VP2-4X/350V

R900440098 ZDB10VP2-4X/50

R907422752 ZDB10VP2-4X/50/V

R900449059 ZDB10VP2-4X/50J

R900972543 ZDB10VP2-4X/50P10V

R900963931 ZDB10VP2-4X/50P25V

R900422752 ZDB10VP2-4X/50V

R901136397 ZDB10VP2-4X/80V

R900522880 ZDB10VP3-4X/100

R900583303 ZDB10VP3-4X/100V

R901136401 ZDB10VP3-4X/160V

R900439335 ZDB10VP3-4X/200

R900950503 ZDB10VP3-4X/200-160V

R900583145 ZDB10VP3-4X/200V

R900430129 ZDB10VP3-4X/315

R900431380 ZDB10VP3-4X/315V

R900460358 ZDB10VP3-4X/50

R900560613 ZDB10VP3-4X/50V

R901136399 ZDB10VP3-4X/80V

R900441130 ZDB10VP7-4X/100

R900513706 ZDB10VP7-4X/100V

R900580733 ZDB10VP7-4X/200

R900562255 ZDB10VP7-4X/200V

R900565406 ZDB10VP7-4X/315

R900550125 ZDB10VP7-4X/315V

R900967531 ZDB10VT1-4X/100

R900594382 ZDB10VT1-4X/100V

R900967532 ZDB10VT1-4X/200

R900967529 ZDB10VT1-4X/200V

R900967921 ZDB10VT1-4X/315

R900967922 ZDB10VT1-4X/315V

R900967530 ZDB10VT1-4X/50

R900472791 ZDB10VT1-4X/50

R900967528 ZDB10VT1-4X/50V

R900474291 ZDB10VT1-4X/50V

R900967533 ZDB10VT2-4X/100

R900442704 ZDB10VT2-4X/100V

R900967534 ZDB10VT2-4X/200

R900593768 ZDB10VT2-4X/200V

R900967924 ZDB10VT2-4X/315

R900505827 ZDB10VT2-4X/315V

R900428936 ZDB10VT2-4X/50

R900429149 ZDB10VT2-4X/50V

R900435816 ZDB10VT2-4X/50VSO30

R900506267 ZDB10VT2-4X/50VSO43

R900587512 ZDB10VT3-4X/100V

R900455615 ZDB10VT3-4X/50V

R900554170 ZDB10VT3-4X/50V

R900706120 ZDB10VT7-4X/50V

R978854311 ZDB10VP2-4X/200VSO43A-481

力士樂REXROTH先導(dǎo)式溢流閥DB.K

R901133623 DB10K1-4X/100-40YV

R901175318 DB10K1-4X/100-90YV

R900511013 DB10K1-4X/100Y

R900594111 DB10K1-4X/100YV

R900425806 DB10K1-4X/200Y

R900432721 DB10K1-4X/200YV

R900443353 DB10K1-4X/315Y

R900438122 DB10K1-4X/315YV

R900472682 DB10K1-4X/50Y

R900472621 DB10K1-4X/50YV

R901040419 DB10K2-4X/100-030Y

R901040159 DB10K2-4X/100-040Y

R901040175 DB10K2-4X/100-060Y

R901073210 DB10K2-4X/100-070Y

R900902171 DB10K2-4X/100P060YV

R901206282 DB10K2-4X/100P070Y

R900964429 DB10K2-4X/100P070YV

R900904826 DB10K2-4X/100P080Y

R900700669 DB10K2-4X/100XY

R900430681 DB10K2-4X/100Y

R900520666 DB10K2-4X/100YJ5V

R900909848 DB10K2-4X/100YMT

R900453240 DB10K2-4X/100YV

R901135795 DB10K2-4X/160YV

R901148473 DB10K2-4X/200-040Y

R901031035 DB10K2-4X/200-095Y

R901025661 DB10K2-4X/200-100YV

R901364919 DB10K2-4X/200-105Y

R900776927 DB10K2-4X/200-130YV

R901018489 DB10K2-4X/200-140YV

R901203917 DB10K2-4X/200-150XY

R901114677 DB10K2-4X/200-150YV

R901073184 DB10K2-4X/200-160Y

R900970815 DB10K2-4X/200-180Y

R900748426 DB10K2-4X/200-180YV

R900722688 DB10K2-4X/200-190YV

R901268891 DB10K2-4X/200P180Y

R900525510 DB10K2-4X/200XY

R900481084 DB10K2-4X/200Y

R900580098 DB10K2-4X/200YJ5

R900517802 DB10K2-4X/200YJ5V

R900438123 DB10K2-4X/200YV

R900786779 DB10K2-4X/315-150Y

R901138760 DB10K2-4X/315-205Y

R900786785 DB10K2-4X/315-210Y

R901052955 DB10K2-4X/315-215Y

R901230236 DB10K2-4X/315-220YV

R900786784 DB10K2-4X/315-225Y

R901340855 DB10K2-4X/315-235YV

R901020305 DB10K2-4X/315-245Y

R901230233 DB10K2-4X/315-250YV

R901310140 DB10K2-4X/315-255YV

R901371309 DB10K2-4X/315-300Y

R901350402 DB10K2-4X/315-300YV

R901370416 DB10K2-4X/315P250YV

R901364565 DB10K2-4X/315P270YV

R901268537 DB10K2-4X/315P300Y

R901015822 DB10K2-4X/315XY

R900422257 DB10K2-4X/315Y

R900927959 DB10K2-4X/315YJ5

R900437270 DB10K2-4X/315YJ5V

R900573364 DB10K2-4X/315YMT

R900438126 DB10K2-4X/315YV

R900708433 DB10K2-4X/350XYV

R900451438 DB10K2-4X/350Y

R900451440 DB10K2-4X/350YV

R901236102 DB10K2-4X/50-25YV

R900972578 DB10K2-4X/50P10YV

R900963987 DB10K2-4X/50P25YV

R901155027 DB10K2-4X/50P30YV

R900408654 DB10K2-4X/50Y

R900452212 DB10K2-4X/50YJ5

R900422817 DB10K2-4X/50YV

R900506505 DB10K2-4X/50YVSO43

R901135792 DB10K2-4X/80YV

R900580081 DB10K3-4X/100Y

R900580103 DB10K3-4X/100YV

R901135820 DB10K3-4X/160YV

R900950554 DB10K3-4X/200-160YV

R901031342 DB10K3-4X/200-180YV

R900440572 DB10K3-4X/200Y

R900428540 DB10K3-4X/200YV

R900580078 DB10K3-4X/315Y

R900438124 DB10K3-4X/315YV

R900427508 DB10K3-4X/50Y

R900432724 DB10K3-4X/50YV

R901135819 DB10K3-4X/80YV

R900784136 DB10K7-4X/100XY

R900443024 DB10K7-4X/100Y

R900511154 DB10K7-4X/100YV

R900580079 DB10K7-4X/200Y

R900511172 DB10K7-4X/200YV

R900786778 DB10K7-4X/315-225Y

R900929911 DB10K7-4X/315-250YV

R900565420 DB10K7-4X/315Y

R900438125 DB10K7-4X/315YV

R901031340 DB10K7-4X/50Y

R900511171 DB10K7-4X/50YV

R900952482 DB6K1-4X/100-100YV

R900439549 DB6K1-4X/100Y

R900449408 DB6K1-4X/100YV

R900428324 DB6K1-4X/200Y

R900432726 DB6K1-4X/200YV

R900428602 DB6K1-4X/315Y

R900432727 DB6K1-4X/315YV

R900741286 DB6K1-4X/350XY

R900464724 DB6K1-4X/50Y

R900438025 DB6K1-4X/50YV

R901031573 DB6K2-4X/100-020YV

R900786775 DB6K2-4X/100-025Y

R901026526 DB6K2-4X/100-030Y

R901030627 DB6K2-4X/100-065Y

R901076754 DB6K2-4X/100-080Y

R900070006 DB6K2-4X/100-080YV

R901235288 DB6K2-4X/100-085YV

R900902401 DB6K2-4X/100-100YV

R901350834 DB6K2-4X/100-40Y

R901351250 DB6K2-4X/100-45Y

R901203578 DB6K2-4X/100-55Y

R901093372 DB6K2-4X/100-60Y

R901172031 DB6K2-4X/100-70Y

R901397118 DB6K2-4X/100-70YV

R901270049 DB6K2-4X/100-75YV

R901437771 DB6K2-4X/100-90Y

R901308766 DB6K2-4X/100-95YV

R901268542 DB6K2-4X/100P060Y

R900083091 DB6K2-4X/100P080Y

R900049901 DB6K2-4X/100P100YV

R901278507 DB6K2-4X/100P80YV

R901295007 DB6K2-4X/100P85YV

R900408060 DB6K2-4X/100Y

R900452406 DB6K2-4X/100YJSO2

R900441640 DB6K2-4X/100YJ5

R900594159 DB6K2-4X/100YJ5V

R900483440 DB6K2-4X/100YV

R901397137 DB6K2-4X/160-140YV

R901397148 DB6K2-4X/160P105YV

R901135781 DB6K2-4X/160YV

R901251831 DB6K2-4X/200-050YV

R901033058 DB6K2-4X/200-090Y

R900787997 DB6K2-4X/200-100Y

R901061983 DB6K2-4X/200-100YV

R901279037 DB6K2-4X/200-105Y

R901076749 DB6K2-4X/200-120Y

R900575579 DB6K2-4X/200-120YV

R901046433 DB6K2-4X/200-130Y

R901111267 DB6K2-4X/200-130YV

R900978315 DB6K2-4X/200-140Y

R900908204 DB6K2-4X/200-140YV

R900978381 DB6K2-4X/200-150Y

R900975676 DB6K2-4X/200-150YV

R901072631 DB6K2-4X/200-160Y

R900934939 DB6K2-4X/200-160YV

R901045312 DB6K2-4X/200-165Y

R900978322 DB6K2-4X/200-175Y

R900578372 DB6K2-4X/200-175YV

R901241788 DB6K2-4X/200-180Y

R900575578 DB6K2-4X/200-180YV

R901270047 DB6K2-4X/200-190Y

R901073181 DB6K2-4X/200-200Y

R901270052 DB6K2-4X/200-200YV

R900059341 DB6K2-4X/200P105YV

R901357045 DB6K2-4X/200P110Y

R900217146 DB6K2-4X/200P120YV

R901302084 DB6K2-4X/200P140Y

R901321641 DB6K2-4X/200P160Y

R901268539 DB6K2-4X/200P180Y

R900991544 DB6K2-4X/200P200Y

R900422238 DB6K2-4X/200Y

R901191339 DB6K2-4X/200YJ5

R900441112 DB6K2-4X/200YJ5V

R900552246 DB6K2-4X/200YMT

R900486196 DB6K2-4X/200YV

R901415371 DB6K2-4X/315-120YV

R900721014 DB6K2-4X/315-150YV

方向控制閥

類型:單向閥、換向閥

一、單向閥

類型:普通單向閥、液控單向閥

1、普通單向閥

作用:只允許油液沿一個(gè)方向流動(dòng)，不允許油液反向倒流(起止回作用)

對單向閥的性能要求:

(1) 正向?qū)�通時(shí)，壓力損失要小;

(2)反向截止時(shí)，密封性要好。

2、

液控單向閥

作用:

(1)起止回作用;

(2)必要時(shí)解除逆止，允許油液反向通過。

3、單向閥用途

(1)止回作用:安裝在泵的出口，p.=0.3~0.5 bar

(2)作背壓閥用:防止液壓缸前沖或爬行，使系統(tǒng)作平穩(wěn)。

(3)作鎖緊裝置用:起重機(jī)支腿、夾緊回路等。

(4)保持控制油路有必要的壓力: Pr≥P液挖

(5)作復(fù)合閥使用:單向節(jié)流閥、單向順序閥、單向減壓閥、單向調(diào)速閥等。

(6)局部回路作安全閥使用: Ppr>P換熱器正常工作的距力