DBDS10P1A/200板式溢流阀 德国博世力士乐REXROTH溢流阀板式安装溢流阀 ****现货

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DBDS10P1A/200板式溢流阀

直动式溢流阀

调压范围:在规定的范围内调节时，阀的输出压力能平稳的升降，无突跳或迟滞现象。

压力流量特性:

溢流阀的进口压力随流量变化而波动的性能;又称为启闭特性。

(p;-Pk)、(p;-Pp) 称为调压偏差，调压偏差小好

nk=P/p。称为开启压力比，

np=P/p。称为闭合压力比，nk、n,大好。

压力损失和卸载压力:当调压弹簧预压缩量等于零或主阀上腔经遥控口直接接回油箱时，流经阀的流量为额定值时，溢流阀的进口压力。压力损失略高于卸载压力。

流量控制阀利用调节阀芯和阀体间的节流口面积和它所产生的局部阻力对流量进行调节，从而控制执行元件的运动速度。流量控制阀按用途分为种。节流阀在调定节流口面积后，能使载荷压力变化不大和运动均匀性要求不高的执行元件的运动速度基本上保持稳定。调速阀在载荷压力变化时能保持节流阀的进出口压差为定值。这样，在节流口面积调定以后，不论载荷压力如何变化，调速阀都能保持通过节流阀的流量不变，从而使执行元件的运动速度稳定。分流阀不论载荷大小，能使同一油源的两个执行元件得到相等流量的为等量分流阀或同步阀；得到按比例分配流量的为比例分流阀。集流阀作用与分流阀相反，使流入集流阀的流量按比例分配。

DBDS10P1A/200板式溢流阀

DBD 型泄压阀是直动式座阀。它们用于限制系统压力。

阀门主要由套筒 (1)、弹簧 (2)、带阻尼活塞的提升阀 (3)（压力等级 25 bar … 400 bar）或球阀 (4)（压力等级 630 bar）和调节类型 (5) 组成。系统压力可通过调节类型 (5) 进行无级设置。弹簧 (2) 将提升阀 (3) 或球 (4) 推到阀座上。通道 P 连接到系统。系统中存在的压力作用在提升阀表面（或球体）上。如果通道 P 中的压力超过弹簧 (2) 上设置的值，则提升阀 (3) 或球 (4) 会逆着弹簧 (2) 打开。现在，液压油从通道 P 流入通道 T。提升阀 (3) 的行程受到压花 (6) 的限制。

为了在整个压力范围内实现良好的压力调节，整个压力范围分为7个压力等级。一个压力等级对应于某个弹簧，用于可通过该弹簧设置的较大工作压力。

注意事项：

调整类型 (5) 的构造使其不会丢失。由于万向节安装，在完全卸载的情况下，调整类型 (5) 中的调整元件保持松动（可移动）。

压力等级“25”：如果在完全卸载的调节类型下，较小压力仍未稳定，则由于弹簧和/或恢复力较低，调节元件必须“拉回”到止挡位置。

为了调整/增加压力，然后可以再次拧入调整元件。

类型 DBDS..K1X/…

版本压力等级 25 … 400 bar（提升座阀）

DBDS10P1A/200板式溢流阀型号

R900424155 DBDS10P1X/100

R900338539 DBDS10P1X/100SO450

R901261545 DBDS10P1X/100-50

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减压阀减压过程如下，当高压油从进油口P流入，经阀体与阀芯之间形成的狭缝A而由减压出油口流出时，产生了局部压力损失，因此减压后的压力，即出油口油压P低于进油压力p,并且开口量越小，压降越大，出口油压力P越低，这就是减压阀能够降低系统压力的原因，即减压阀的减压原理。当出口油压P低于弹簧压力时，阀芯下腔油压与弹簧力相等相等，这时阀芯在弹簧的作用下，处于较下位置，开口量A变大，油液流经狭缝时压力损失减小，出口油压P因而上升，直至上升到弹簧的调定值。见图当压力继续升高，P口液压油通过控制油道a到阀芯的下端，关小A的开度直至关闭，此时P口不再有压力油流出。