DBAW30BH1N1X/150-6EG24N9K4力士乐先导溢流阀

德国rexroth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。当系统压力增大时,会使流量需求减小。此时溢流阀开启,使多余流量溢回油箱,***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。力士乐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)。

rexroth溢流阀一般有两种结构:1、直动型溢流阀 。2、先导型溢流阀。

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。

普通溢流阀与比例溢流阀一样,都有一个阀芯,阀芯的一端是液压油产生的压力,另一端是机械力。普通溢流阀通过调节弹簧力,来调整液压压力。而比例溢流阀是电磁铁直接产生推力,作用在阀芯上,电磁铁上的输入电压可以在0-24伏之间变化,产生的推力就随之变化,从而得到连续变化的液压压力。

因为比例电磁铁的推力不大,所以直动式比例溢流阀的流量很小,压力70兆帕时,流量只有1升/分钟左右。需要大流量比例阀的时候,要把这个比例阀做先导阀,下面还要配一个大通径的溢流阀。

力士乐电磁溢流阀和比例溢流阀功能上区别不是太大,都是在系统压力超过设定值时开启卸压、溢流;不同的是,比例溢流阀可以按比例调定溢流的流量,对系统的控制更加精密。普通的溢流阀就是开启和关闭两个位置,比例阀在开启溢流时可以有多个位置。

DB10-1-5X/315

DB10-1-5X/350

DB10 1-5X/200

DB10-1-4X/100W

DB10A-1-30/315

DB10-1-5X/315

DB10-2-5X/315XY

DB10-1-5X/315

DB10K2-4X/200Y

DB-10-2-52/100

DB-30-3-52/315XU

DB 10-2-52/250B

DB 10-2-42/350-190X

DB10K2-45/200YV

DB20G2-42/200V/12

DB10G2-50/50U/12

DB20-2-52/200

DB30-2-52/315/12

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欢迎询价！！

经营产品：

阀类：电磁阀、换向阀、单向阀、溢流阀、减压阀、平衡

阀、插装阀、比例阀等

泵类：齿轮泵、柱塞泵、叶片泵等

武穴黎翔机电设备有限公司伊顿VICKERS威格士售部

询价联系人：陈工

询价热线： 0713-8529058，18995766168

询价QQ:  1477538929， 2593165857

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型号DBA,DBAW

泵用安全块，先导式

规格32和40

直接安装在泵的SAE压力油口上

泵的零压启动和旁通

有集成单向阀

通过内置电磁方向滑阀或方向座阀进行卸载

可选择转换减震器（仅适用于DBAW型）

按97/23/EC指导已通过设计安全测试的溢流阀

4种可选调节方式

旋钮

带护罩的六角套筒螺钉

带锁有刻度的旋钮

有刻度的旋钮

型号DB,DBW

溢流阀，先导式