DB10-1-41/100先导式溢流阀 德国博世力士乐REXROTH溢流阀 先导式溢流阀 原装现货

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DB10-1-41/100先导式溢流阀 

溢流阀一般有两种结构：1、直动型溢流阀 。2、先导式溢流阀。

对溢流阀的主要要求：调压范围大，调压偏差小，压力振摆小，动作灵敏，过载能力大，噪声小。

先导型溢流阀的导阀部分结构尺寸较小，调压弹簧不必很强，因此压力调整比较轻便。但因先导型溢流阀要在先导阀和主阀都动作后才能起控制作用，因此反应不如直动型溢流阀灵敏。

与三节同心结构相比，二节同心结构的特点是：①主阀芯仅与阀套和主阀座有同心度要求，免去了与阀盖的配合，故结构简单，加工和装配方便。②过流面积大，在相同流量的情况下，主阀开启高度小；或者在相同开启高度的情况下，其通流能力大，因此，可做得体积小、重量轻。③主阀芯与阀套可以通用化，便于批量生产。

溢流阀是一种液压压力控制阀，在液压设备中主要起定压溢流作用，稳压，系统卸荷和安全保护作用。

定压溢流作用：在定量泵节流调节系统中，定量泵提供的是恒定流量。当系统压力加大时，会使流量需求减小。此时溢流阀开启，使多余流量溢回油箱，保证溢流阀进口压力，即泵出口压力恒定（阀口常随压力波动开启）。

稳压作用：溢流阀串联在回油路上，溢流阀产生背压，运动部件平稳性增加。

系统卸荷作用：在溢流阀的遥控口串接溢小流量的电磁阀，当电磁铁通电时，溢流阀的遥控口通油箱，此时液压泵卸荷。溢流阀此时作为卸荷阀使用。

安全保护作用：系统正常工作时，阀门关闭。只有负载超过规定的极限（系统压力超过调定压力）时开启溢流，进行过载保护，使系统压力不再增加（通常使溢流阀的调定压力比系统高工作压力高10%～20%）。

实际应用中一般有：作卸荷阀用，作远程调压阀，作高低压多级控制阀，作顺序阀，用于产生背压（串在回油路上）。

DB10-1-41/100先导式溢流阀 

DB 型压力阀是一种先导式溢流阀。用于限制工作压力。

这些溢流阀 (DB) 主要由带主阀心 (3) 的主阀 (1) 以及带压力调节元件的先导控制阀 (2) 组成。

施加在通道 P 中的压力作用于主阀芯 (3)。同时，该压力通过配有喷嘴 (4) 和 (5) 的控制油路 (6) 和 (7) 施加于主阀芯 (3) 的弹簧负载侧和先导控制阀 (2) 中的滚珠 (8)。如果通道 P 中的压力超过弹簧 (9) 上设定的值，则滚珠 (8) 将背向弹簧 (9) 打开。相应的信号通过控制油路 (10) 和 (6) 从通道 P 由内部传出。此时主阀芯 (3) 弹簧负载侧的液压油通过控制油路 (7)、喷嘴孔 (11) 和滚珠 (8) 流入弹簧腔 (12)。从此处，液压油通过控制油路 (13) 从内部流入油箱（对于型号 DB …），或通过控制油路 (14) 从外部流入油箱（对于型号 DB …Y）。喷嘴 (4) 和 (5) 会导致主阀芯 (3) 出现压降，从而使通道 P 到通道 T 的连接打开。现在，液压油从通道 P 流到通道 T，同时维持设定的工作压力。

溢流阀可通过油口“X”(15) 卸载或切换为另一压力（第二个压力等级）。

DB10-1-41/100先导式溢流阀 型号

R900597664 DB10-1-5X/100

R900781638 DB10-1-5X/100-035

R900508964 DB10-1-5X/100/12

R900503252 DB10-1-5X/100B

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R901081480 DB10-1-5X/160X

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R901179918 DB10-1-5X/200YU

R901215197 DB10-1-5X/210E

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R901115994 DB10-1-5X/220YE

R901096704 DB10-1-5X/235E

R901182179 DB10-1-5X/250E

R900546359 DB10-1-5X/290B

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R900547295 DB10-1-5X/315Y/12

R900519053 DB10-1-5X/315YB

R900593794 DB10-1-5X/350

R900781637 DB10-1-5X/350-220

R901096868 DB10-1-5X/350D

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R900597665 DB10-1-5X/50

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R900590646 DB10-2-5X/100

R900597083 DB10-2-5X/100SO184

R900535030 DB10-2-5X/100/12

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R900773341 DB10-2-5X/100E

R901034003 DB10-2-5X/100P55Y

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R900729299 DB10-2-5X/340VB

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R901008762 DB10-2-5X/350-205

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R901095755 DB10-2-5X/350-270

R901050554 DB10-2-5X/350-285

R901049522 DB10-2-5X/350-295

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R901208873 DB10-2-5X/350-300

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R901217381 DB10-2-5X/350-350

R900534005 DB10-2-5X/350/12

R900558855 DB10-2-5X/350=LB

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R901003408 DB10-2-5X/350D

R901070345 DB10-2-5X/350E

R901093524 DB10-2-5X/350P350

R900249511 DB10-2-5X/350V

R901020317 DB10-2-5X/350VD

R900501045 DB10-2-5X/350X

R901094599 DB10-2-5X/350X./12

R901052268 DB10-2-5X/350XU

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R900546291 DB10-2-5X/40B

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R900590645 DB10-2-5X/50

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R900911082 DB10-2-5X/50-30

R900535930 DB10-2-5X/50/12

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R900911768 DB15G1-5X/315X

R900524299 DB15G1-5X/315Y

R900767506 DB15G1-5X/350

R900533719 DB15G1-5X/350V/12

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R900941168 DB15G1-5X/50

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R900484813 DB15G2-3X/315X/5W45

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R900364840 DB15G2-4X/315X/5W73

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R900559328 DB15G2-4X=315X/5W45

R900576748 DB15G2-4X=315X/5W45

R900577889 DB15G2-4X=315X/5W45=PL

R900501568 DB15G2-5X/100

R900568248 DB15G2-5X/100U

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R901068838 DB15G2-5X/315XU/12

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R900532799 DB15G2-5X/315Y

R900519970 DB15G2-5X/350

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R900561767 DB15G2-5X/50YSO31

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R900514542 DB15G3-5X/100

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R901057457 DB15G3-5X/315

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R900510806 DB15G7-5X/200

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R900946278 DB15G7-5X/350V/12

R900502911 DB20G.-5X/...

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R901319001 DB20G1-5X/210E

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R900970480 DB20G2-5X/200-140XU

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R900534718 DB20G2-5X/350U/12

R900533481 DB20G2-5X/350V

R900562990 DB20G2-5X/350X

R900746480 DB20G2-5X/350XU

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R901411313 DB20G2-5X/350YD

R900546366 DB20G2-5X/35B

R900546367 DB20G2-5X/40B

R900590328 DB20G2-5X/50

R900934653 DB20G2-5X/50-10

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R901010705 DB20G2-5X/50D

R900964962 DB20G2-5X/50U

R900505153 DB20G2-5X/50V

R900943511 DB20G2-5X/50V/12

旋启式止回阀的阀瓣绕转轴作旋转运动。其流体阻力一般小于升降式止回阀，它适用于较大口径的场合。旋启式止回阀根据阀瓣的数目可分为单瓣旋启式、双瓣旋启式及多瓣旋启式三种。单瓣旋启式止回阀一般适用于中等口径的场合。大口径管路选用单瓣旋启式止回阀时，为减少水锤压力，较好采用能减小水锤压力的缓闭止回阀。双瓣旋启式止回阀适用于大中口径管路。对夹双瓣旋启式止回阀结构小、重量轻，是一种发展较快的止回阀；多瓣旋启式止回阀适用于大口径管路。