公开(公告)号：US20240200686A1

公开(公告)日：2024-06-20

申请号：US18541804

申请日：2023-12-15

申请人： Danfoss Power Solutions (Zhejiang) Co. Ltd.

发明人： Zhongxiao MA ,  Yanre LUO ,  Linmu ZHANG ,  Xueli LU

IPC分类号： F16K31/60 ,  F16K31/52

CPC分类号： F16K31/602 ,  F16K31/523

摘要： An actuator and a spool type directional control valve is disclosed. The actuator includes a catcher and a shaft. The catcher is provided with a first connecting portion and a second connecting portion. The first connecting portion is used to connect to a spool, and the second connecting portion includes a first limiting portion and an avoidance slot which are connected in a circumferential direction. The shaft includes a shaft body and a control member. The shaft body is used to connect to an operation mechanism and is driven to rotate by the operation mechanism, so that: the control member is capable of abutting against the first limiting portion, and driving the catcher to rotate forward by a first angle a via the first limiting portion so as to drive the spool move forward to a first working position; and the control member is capable of rotating freely in the avoidance slot, and the maximum rotation angle c of the control member in the avoidance slot is not less than the first angle a. With the actuator, the hysteresis of the directional control valve may be reduced, and asymmetrical hysteresis of the directional control valve when the spool moving in different directions can also be avoided.