公司阀门产品培训汇编

1 直动式溢流阀的结构简单价廉经典结构: –缓冲间隙 –导向,防偏置. –偏流盘：流线型 泄油口,平衡液动 力.将整个调压范围分区， 采用不同刚度的调压 弹簧，以使特性曲线 更加理想大流量的场合压力波 动大、装配调节困难 …14th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.锥阀结构球阀结构214th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.插装式结构：314th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.

应用举例：直动式阀的缺陷：•

大流量的场合压力波动大、稳定性差•

装配调节困难414th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.先导式溢流阀的基本原理

由直动式的缺陷而

来

.

液压力与弹簧力

;

液压力与液压力

液压半桥514th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.先导式溢流阀的结构614th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.714th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.泄荷阀

：ＤＢＷ814th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.

泄荷阀

ＤＢＷ的泄荷缓冲板

利用电信号泄荷响应很快，

易造成系统的压力尖峰，

噪音等，

为了解决上述问题，加装

缓冲板，见图示914th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.多级调压模块：DB3U1014th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.rights

applications.

Soft

operation,

unloading

start.

(©

All

rights

reserved

by

Bosch

Rexroth

AG,

even

and

especially

in

cases

of

proprietary

与

DBW

相同）11 Forconstantpump Forvariablepump,relationshiptoDR-control.14th–15thJanuary2022,BoschRexrothinChinaWealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.1214th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.直动式三通减压阀的结构1314th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.应用举例1414th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.1514th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.先导式减压阀的结构(两通式）1614th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.先导式、滑阀结构、三通减压阀

力士乐独特设计

大通径

3

通减压阀最大流量

400l/min.

1714th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.先导式、滑阀结构、三通减压阀1814th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.1914th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.2014th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.

顺序阀

利用压力来控制油路的通断，相当于一个液控的二位二通的方向阀。

与溢流阀类似，

只是后接工作油路，一般控制油需外泄。2114th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.先导式顺序阀的结构22 先导控制油经4.1作用于阀芯14th–15thJanuary2022,Bosch5,Rexroth来改变主阀芯上腔的压力inChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.

卸荷溢流阀的结构和工作原理

先导阀一次开启通过球阀

9;

此时阀杆

6

处于力平衡状态

,

开启后

,

主阀

上腔压力下降

.

二次保持通过顶杆

6;

此时

,

顶杆

6

一侧卸荷

;

顶杆

6

的作用面积比球阀

的作用面积大

10%

或

17%.2314th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.2414th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.2514th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.2614th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.流量控制阀

分类：–––––节流阀调速阀分流集流阀刹车阀

(

平衡阀

)防管路爆破阀（限速切断阀）2714th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.节流阀28 MG/MK…6~3014th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.29 MK-52~10214th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.节流阀3014th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.精密节流阀

F-5

~

103114th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.双节流阀3214th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.

调速阀

:

原理

:

–

节流调速

:

与负载有关

,

–

期望达到与负载无关的效果

,

即

:

如何使

p

保持恒定

!3314th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.结构举例：3414th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.结构举例：3514th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.应用举例：3614th–15thJanuary2022,BoschRexrothinChina©AllrightsreservedbyBoschRexrothAG,evenandespeciallyincasesofproprietaryrightsapplications.Wealsoretainsolepowerofdisposal,includingallrightsrelatingtocopying,transmissionanddissemination.油液压缩量

启动冲击后果：•

刀具折断启动冲击：

起始阶段的

“

启动阶跃

”

问题：

由于其中的

定差减压阀为常开

，所以，突

然启动时，全压差作用于全开