详细介绍
华德溢流阀DB3U10N-1-30B/100YW220-50NZ4
华德溢流阀DB3U10N-1-30B/100YW220-50NZ4
柔性节流阀的工作原理,依靠阀杆夹紧柔韧的橡胶管而产生节流作用,也可以利用气体压力来代替阀杆压缩胶管。柔性节流阀结构简单,压力降小,动作可靠性高。对污染不敏感,通常工作压力范围为0.3—0.63MPa。
应用气动流量控制阀对气动执行元件进行调速,比用液压流量控制阀调速要困难、因气体具有压缩性。所以用气动流量控制阀调速应注重以下几点,以防产生爬行:
(1)管道上不能有漏气现象;
(2)气缸、活塞间的润滑状态要好;
(3)流量控制阀应尽量安装在气缸或气马达四周;
(4)尽可能采用出口节流调速方式;
(5)外加负载应当稳定。若外负载变化较大,应借助液压或机械装置(如气液联动)来补偿由于载荷变动造成的速度变化。
溢流节流阀也是一种压力补偿型节流阀,它由溢流阀3和节流阀2并联而成。进口处的高压油p1,一部分经节流阀2去执行机构,压力降为p2,另一部分经溢流阀3的溢流口去油箱。溢流阀上、下端分别与节流阀前后的压力油p1和p2相通。当出口压力p2增大时,阀芯下移,关小溢流口,溢流阻力增大,进口压力p2随之增加,因而节流阀前后的压差(p1-p2)基本保持不变;反之亦然。即通过阀的流量基本不受负载的影响。
单向节流阀实际是由节流阀和单向阀并联在一起而组成的复合阀。单向节流阀的结构,其主要组成零件有:阀芯、阀体、阀体盖、螺纹杆、手轮、弹簧和丝堵。单向节流阀安装在液压传动管路中,既能控制液压油的流向只向一个方向流动,又能控制液压油流量的大小。当液压油从右侧孔进人阀体内时,首*人阀芯下端小孔A中,使阀芯在下端弹簧力和小孔中液压油的推力作用下上升则进入的液压油只能由阀芯锥面的三角沟槽中通过,使流量受到限制,起到节流作用。通过的液压油从左侧孔流出。流量的大小也是由手轮调节锥形阀芯与阀体的间隙大小来控制。如果液压油从左侧进入阀内,液压油首*人阀芯上端小孔B中,在液压油的压力作用下,阀芯压弹簧下滑,打开阀体内左右通孔,使液压油无阻滞,左进右出。此时阀芯位置不起节流作用,只起单向阀作用。
北京华德液压全系列 具体型号
北京华德先导式溢流阀部分型号:
DB3U10E-2-30B/315G24NZ4 DB3U20H-1-30B/100G24NZ5
DB3U10E-2-30B/315G24NZ5 DB3U20H-1-30B/100G24NZ5L
DB3U10E-2-30B/315G24NZ5L DB3U20H-1-30B/100W220-50NZ4
DB3U10E-2-30B/315W220-50NZ4 DB3U20H-1-30B/100W220-50NZ5
DB3U10E-2-30B/315W220-50NZ5 DB3U20H-1-30B/100W220-50NZ5L
DB3U10E-2-30B/315W220-50NZ5L DB3U20H-1-30B/100XG24NZ4
DB3U10E-2-30B/315XYG24NZ4 DB3U20H-1-30B/100XG24NZ5
DB3U10E-2-30B/315XYG24NZ5 DB3U20H-1-30B/100XG24NZ5L
DB3U10E-2-30B/315XYG24NZ5L DB3U20H-1-30B/100XW220-50NZ4
DB3U10E-2-30B/315XYW220-50NZ4 DB3U20H-1-30B/100XW220-50NZ5
DB3U10E-2-30B/315XYW220-50NZ5 DB3U20H-1-30B/100XW220-50NZ5L
DB3U10E-2-30B/315XYW220-50NZ5L DB3U20H-1-30B/100XYG24NZ4
DB3U10E-2-30B/315YG24NZ4 DB3U20H-1-30B/100XYG24NZ5
DB3U10E-2-30B/315YG24NZ5 DB3U20H-1-30B/100XYG24NZ5L
DB3U10E-2-30B/315YG24NZ5L DB3U20H-1-30B/100XYW220-50NZ4
DB3U10E-2-30B/315YW220-50NZ4 DB3U20H-1-30B/100XYW220-50NZ5
DB3U10E-2-30B/315YW220-50NZ5 DB3U20H-1-30B/100XYW220-50NZ5L
DB3U10E-2-30B/315YW220-50NZ5L DB3U20H-1-30B/100YG24NZ4
DB3U10E-3-30B/100G24NZ5L DB3U20H-1-30B/100YG24NZ5
DB3U10E-3-30B/100W220-50NZ5L DB3U20H-1-30B/100YG24NZ5L
DB3U10E-3-30B/100XYG24NZ4 DB3U20H-1-30B/100YW220-50NZ4
DB3U10E-3-30B/100XYG24NZ5 DB3U20H-1-30B/100YW220-50NZ5
DB3U10E-3-30B/100XYG24NZ5L DB3U20H-1-30B/100YW220-50NZ5L
DB3U10E-3-30B/100XYW220-50NZ4 DB3U20H-2-30B/100G24NZ4
DB3U10E-3-30B/100XYW220-50NZ5 DB3U20H-2-30B/100G24NZ5
DB3U10E-3-30B/100XYW220-50NZ5L DB3U20H-2-30B/100G24NZ5L
DB3U10E-3-30B/100YG24NZ4 DB3U20H-2-30B/100W220-50NZ4
DB3U10E-3-30B/100YG24NZ5 DB3U20H-2-30B/100W220-50NZ5
DB3U10E-3-30B/100YG24NZ5L DB3U20H-2-30B/100W220-50NZ5L