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DBDS10K1X/200溢流阀现货 德国原装博世力士乐REXROTH溢流阀 电磁溢流阀 原装现货
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DBDS10K1X/200溢流阀现货
性能
(1)调压范围:它是指减压阀输出压力P2的可调范围,在此范围内要求达到规定的精度。调压范围主要与调压弹簧的刚度有关。
(2)压力特性:它是指流量g为定值时,因输入压力波动而引起输出压力波动的特性。输出压力波动越小,减压阀的特性越好。输出压力必须低于输入压力—定值才基本上不随输入压力变化而变化。
(3)流量特性:它是指输入压力—定时,输出压力随输出流量g的变化而变化的持性。当流量g发生变化时,输出压力的变化越小越好。一般输出压力越低,它随输出流量的变化波动就越小
减压阀
减压阀是利用液流流过缝隙产生压力损失,使其出口压力低于进口压力的压力控制阀。
按调节要求不同,有定值减压阀,定差减压阀,定比减压阀。
定值减压阀的结构原理
减压阀起减压作用且保证出口压力为定值的条件是:当出口压力大于减压阀的调定压力,使其先导阀开启。
直动式减压阀
减压阀的功用与特点:
减压阀用在液压系统中获得压力低于系统压力的二次油路上
与溢流阀比较:
减压阀是出口压力控制,保证出口压力为定值;溢流阀是进口压力控制,保证进口压力为定值。
减压阀阀口常开;
溢流阀阀口常闭。
减压阀有单独的泄油口;溢流阀弹簧腔的泄漏油经阀体
内流道內泄至出口。
减压阀与溢流阀-样有遥控口。
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。
DBDS10K1X/200溢流阀现货
DBD型泄压阀为直动式座阀。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芯(3)(压力等级25 bar…400 bar)或球(4)(压力等级630 bar)和调节类型(5)组成。系统压力可以通过调节类型(5)进行无级调节。弹簧(2)将提升阀芯(3)或球(4)推到阀座上。通道P已连接到系统。系统中存在的压力作用在提升阀表面(或球)上。如果通道P中的压力超过弹簧(2)上设定的值,则提升阀芯(3)或球(4)靠着弹簧(2)打开。现在,来自通道P的液压流体流入通道T。提动阀芯(3)的行程受到压纹(6)的限制。
为了在整个压力范围内实现良好的压力调节,已将整个压力范围分为7个压力等级。一个压力额定值对应于可以通过该弹簧设定的较大工作压力的某一弹簧。
注意事项:
调整类型(5)的构造使其不会丢失。通过万向支架安装,在完全卸载的情况下,调节元件在调节类型(5)中保持松动(可移动)。
额定压力为“ 25”:如果尽管完全卸载了调节类型,但仍未达到较小压力,则由于弹簧和/或复位力较低,必须将调节元件“拉回”到挡块。
为了进行压力调节/增加,可以再次拧入调节元件。
键入DBDS..K1X /…
版本压力等级25…400 bar(提升座阀)
R983037955 DBDH6P1X/400IN010
R978851085 DBDH6G1X/100V/12
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换向阀主要由阀体、密封组件、凸轮、阀杆、手柄和阀盖等零部件组成(图1)。阀门由手柄驱动,通过手柄带动阀杆与凸轮旋转,凸轮具有定位驱动与锁定密封组件的开启与关闭功能。手柄逆时针旋转,两组密封组件分别在凸轮的作用下关闭下端的两个通道,上端的两个通道分别与管道装置的进口相通。反之,上端的两个通道关闭,下端两个通道与管道装置的进口相通,实现了不停车换向。
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