CN204985138U - Take sequence action valve of load feedback - Google Patents

Take sequence action valve of load feedback Download PDF

Info

Publication number
CN204985138U
CN204985138U CN201520747400.9U CN201520747400U CN204985138U CN 204985138 U CN204985138 U CN 204985138U CN 201520747400 U CN201520747400 U CN 201520747400U CN 204985138 U CN204985138 U CN 204985138U
Authority
CN
China
Prior art keywords
valve
interface
cylinder
spool
oil cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520747400.9U
Other languages
Chinese (zh)
Inventor
苏欢欢
陆跃德
姜旭东
宣锋杰
沈振嗣
陆永培
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUZHOU SHENGLI HYDRAULIC CO Ltd
Original Assignee
HUZHOU SHENGLI HYDRAULIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HUZHOU SHENGLI HYDRAULIC CO Ltd filed Critical HUZHOU SHENGLI HYDRAULIC CO Ltd
Priority to CN201520747400.9U priority Critical patent/CN204985138U/en
Application granted granted Critical
Publication of CN204985138U publication Critical patent/CN204985138U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

The utility model discloses a take sequence action valve of load feedback, including the valve body, install the cylinder control valve that resets, upset cylinder control valve on the valve body, reset hydro -cylinder overflow valve and upset hydro -cylinder overflow valve, be equipped with oil inlet, oil return opening on the valve body, the hydro -cylinder that resets has pole chamber interface, the hydro -cylinder that resets not to have pole chamber interface, the upset hydro -cylinder has pole chamber interface and upset hydro -cylinder not to have pole chamber interface, the cylinder control valve that restores to the throne has first oil inlet, first oil return opening, an actuator port and the 2nd actuator port, upset cylinder control valve has second oil inlet, second oil return opening, the 3rd actuator port and fourth actuator port, and overturns the hydro -cylinder and do not have pole chamber interface and the hydro -cylinder that restores to the throne and have and be equipped with parallelly connected first check valve and sequence valve between the interface of pole chamber. The utility model discloses compact structure, small, that the installation is maintained is convenient, response speed is fast, the dependable performance, the whole mechanical normal work of turning over is guaranteed in the switching -over of realization turnover plow that can be smooth.

Description

A kind of sequentially-operating valve of bringing onto load feedback
Technical field
The utility model relates to agricultural valve technology field, particularly relate to a kind of for plough machinery sequentially-operating valve.
Background technique
Field is when cultivating, need to utilize instrument to turn over field, plough, then just can cultivate, the Chinese utility model patent that the patent No. is CN95215189.8, the applying date is 1995.06.30 discloses a kind of agricultural paddy field and to plough four-furrow plough, forms primarily of big frame, corner bracket, plow beam, gear and hydraulic pressure installation.
Now for the turning over of field, plough and complete primarily of farm machinery, several pivot plow is driven to plough by a tractor, speed is fast, and efficiency is high, but, when tractor drives the farming of several upset pears to field head time, tractor needs to turn, and changes a direction and carries out farming, and this time, upset pears also need to change a direction, and ability and tractor coordinate.
Model utility content
The purpose of this utility model is to provide the sequentially-operating valve of a kind of bringing onto load feedback, and its structure is simple, volume compact, installs and convenient disassembly, can realize the commutation of pivot plow smoothly, ensures the normal work of whole machinery of turning over.
In order to solve above technical problem, the technical solution of the utility model is as follows: a kind of sequentially-operating valve of bringing onto load feedback, comprise valve body, be arranged on drawback cylinder control valve on described valve body, overturning oil cylinder control valve, drawback cylinder relief valve and overturning oil cylinder relief valve, described valve body is provided with filler opening, return opening, drawback cylinder rod chamber interface, drawback cylinder rodless cavity interface, overturning oil cylinder rod chamber interface and overturning oil cylinder rodless cavity interface; Described drawback cylinder control valve have the first return opening that the first filler opening of communicating with described filler opening and described return opening communicate and the first actuator port that drawback cylinder rodless cavity interface communicates and and the second actuator port of communicating of described overturning oil cylinder control valve; Described overturning oil cylinder control valve have the second return opening that the second filler opening of communicating with described second actuator port and described return opening communicate and the 3rd actuator port that overturning oil cylinder rod chamber interface communicates and and the 4th actuator port that communicates of described overturning oil cylinder rodless cavity interface, and between described overturning oil cylinder rodless cavity interface and described drawback cylinder rod chamber interface, be provided with the first one-way valve in parallel and sequence valve.
As preferably, described drawback cylinder rod chamber interface and described drawback cylinder rodless cavity jointing are provided with double-action Pilot operated check valve.
As preferably, described overturning oil cylinder rodless cavity jointing is provided with Pilot operated check valve.
The outlet port of described drawback cylinder relief valve is provided with first throttle valve
As preferably, the outlet port of described overturning oil cylinder relief valve is provided with second throttle.
As preferably, described valve body is provided with import and is communicated with described second filler opening and exports the second one-way valve be communicated with described filler opening.
As preferably, described drawback cylinder control valve comprises the spool chamber be located on described valve body, the control spool be located in described spool chamber, the spring chamber being located at described control spool two ends, the Compress Spring be located in described spring chamber, the middle annular groove be located on described control spool, left end annular groove, right-hand member annular groove, be located in described left end annular groove and and the radial direction through hole that communicates of spring chamber and the sealing plug that is located at described spool chamber two ends.
As preferably, described overturning oil cylinder control valve comprises the spool installation cavity be located on described valve body, the spool be located in described spool installation cavity, the end spring chamber being located at described spool two ends, the end Compress Spring be located in described end spring chamber, the central ring oil groove be located on described spool, left end endless-oil groove, right-hand member endless-oil groove, be located in described left end oil ring groove and and the radial oil through that communicates of end spring chamber and the end part seal plug screw that is located at described spool installation cavity two ends.
The utility model compact structure, volume is little, convenient for installation and maintenance, fast response time, reliable performance, can realize the commutation of pivot plow smoothly, ensures the normal work of whole machinery of turning over.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is the left view of Fig. 1;
Accompanying drawing 3 is the right elevation of Fig. 1;
Accompanying drawing 4 is the A-A sectional view in Fig. 1;
Accompanying drawing 5 is the B-B sectional view in Fig. 1;
Accompanying drawing 6 is hydraulic schematic diagram of the present utility model.
Embodiment
The following stated is only preferred embodiment of the present utility model, not limits scope of the present utility model.
Embodiment, see accompanying drawing 1,2,3,4,5, a kind of sequentially-operating valve of bringing onto load feedback, comprise valve body 1, be arranged on drawback cylinder control valve 2, overturning oil cylinder control valve 3, drawback cylinder relief valve 4 and overturning oil cylinder relief valve 5 on described valve body 1, valve body 1 is rectangular ironcasting, and described valve body 1 is provided with filler opening 101, return opening 102, drawback cylinder rod chamber interface 103, drawback cylinder rodless cavity interface 104, overturning oil cylinder rod chamber interface 105 and overturning oil cylinder rodless cavity interface 106, filler opening 101, return opening 102, drawback cylinder rod chamber interface 103, drawback cylinder rodless cavity interface 104, overturning oil cylinder rod chamber interface 105 and overturning oil cylinder rodless cavity interface 106 are tapped hole, and size is determined according to the actual requirements, described drawback cylinder control valve 2 have the first oil return inlet T 1 that the first oil inlet P 1 of communicating with described filler opening 101 and described return opening 102 communicate and the first actuator port A1 that drawback cylinder rodless cavity interface 104 communicates and and the second actuator port B1 of communicating of described overturning oil cylinder control valve (3), described overturning oil cylinder control valve 3 has the second oil inlet P 2 communicated with described second actuator port B1, with the second oil return inlet T 2 that described return opening 102 communicates, the 3rd actuator port A2 communicated with overturning oil cylinder rod chamber interface 105 and the 4th actuator port B2 communicated with described overturning oil cylinder rodless cavity interface 106, and between described overturning oil cylinder rodless cavity interface 106 and described drawback cylinder rod chamber interface 103, be provided with the first one-way valve 6 in parallel and sequence valve 7, what the first one-way valve 6 ensured that hydraulic oil can only be unidirectional flows to overturning oil cylinder rodless cavity interface 106 from drawback cylinder rod chamber interface 103, sequence valve 7 ensures when the pressure at overturning oil cylinder rodless cavity interface 106 place arrives predetermined time, sequence valve 7 is opened, hydraulic oil flows into drawback cylinder rod chamber interface 103 from overturning oil cylinder rodless cavity interface 106.
Further, described drawback cylinder rod chamber interface 103 and described drawback cylinder rodless cavity interface 104 place are provided with double-action Pilot operated check valve 8; Double-action Pilot operated check valve 8 can carry out pressurize to drawback cylinder rod chamber interface 103 and drawback cylinder rodless cavity interface 104 simultaneously; Double-action Pilot operated check valve 8 comprises guide piston, be located at the push rod at guide piston two ends, be located at the check valve body in described drawback cylinder rod chamber interface 103 and drawback cylinder rodless cavity interface 104, be located at the nonreturn valve core in check valve body, be screwed onto the throttling plug screw in check valve body and the spring between throttling plug screw and nonreturn valve core.
Described overturning oil cylinder rodless cavity interface 106 place is provided with Pilot operated check valve 9; Pilot operated check valve 9 is for the pressurize at overturning oil cylinder rodless cavity interface 106 place; Pilot operated check valve 9 hydraulic control piston, be located at the hydraulic control push rod on hydraulic control piston, be located at the check valve body in described overturning oil cylinder rodless cavity interface 106, be located at the nonreturn valve core in check valve body, be screwed onto the throttling plug screw in check valve body and the spring between throttling plug screw and nonreturn valve core.
Further, the outlet port of described drawback cylinder relief valve 4 is provided with first throttle valve 10; The outlet port of described overturning oil cylinder relief valve 5 is provided with second throttle 11; Described valve body 1 is provided with import and is communicated with described second oil inlet P 2 and exports the second one-way valve 12 be communicated with described filler opening 101.
In the present embodiment, described drawback cylinder control valve 2 comprise the spool chamber 201 be located on described valve body 1, the control spool 202 be located in described spool chamber 201, the spring chamber 203 being located at described control spool 202 two ends, the Compress Spring 204 be located in described spring chamber 203, the middle annular groove 205 be located on described control spool 202, left end annular groove 206, right-hand member annular groove 207, to be located in described left end annular groove 206 and and the radial direction through hole 208 that communicates of spring chamber 203 and the sealing plug 209 that is located at described spool chamber 201 two ends, described overturning oil cylinder control valve 3 comprises the spool installation cavity 301 be located on described valve body 1, be located at the spool 302 in described spool installation cavity 301, be located at the end spring chamber 303 at described spool 302 two ends, be located at the end Compress Spring 304 in described end spring chamber 303, be located at the central ring oil groove 305 on described spool 302, left end endless-oil groove 306, right-hand member endless-oil groove 307, to be located in described left end oil ring groove 306 and and the radial oil through 308 that communicates of end spring chamber 303 and the end part seal plug screw 309 that is located at described spool installation cavity 301 two ends.
Further, drawback cylinder relief valve 4, overturning oil cylinder relief valve 5 include: be located at the overflow valve pocket on valve body 1, be located at the relief valve plug screw of overflow valve pocket end, relief valve spool, relief valve spool is plugged on spring seat, spring seat Spielpassung is arranged in overflow valve pocket, and spring seat is provided with multiple tracks balancing slit; Relief valve spring one end acts on spring seat, and one end acts on the sliding seat that is located in described relief valve plug screw in addition, and relief valve plug screw is provided with the adjusting bolt contacted with described sliding seat and the tightening nut be located in adjusting bolt.
More than illustrate it is only to explanation of the present utility model, those of ordinary skill in the art's can completely is made to implement this programme, but be not to restriction of the present utility model, those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification, and these are all not creative amendments.As long as but be all subject to the protection of Patent Law in right of the present utility model.

Claims (8)

1. the sequentially-operating valve of a bringing onto load feedback, it is characterized in that: comprise valve body (1), be arranged on described valve body (1) upper drawback cylinder control valve (2), overturning oil cylinder control valve (3), drawback cylinder relief valve (4) and overturning oil cylinder relief valve (5), described valve body (1) is provided with filler opening (101), return opening (102), drawback cylinder rod chamber interface (103), drawback cylinder rodless cavity interface (104), overturning oil cylinder rod chamber interface (105) and overturning oil cylinder rodless cavity interface (106);
Described drawback cylinder control valve (2) have the first return opening (T1) that the first filler opening (P1) of communicating with described filler opening (101) and described return opening (102) communicate and the first actuator port (A1) that drawback cylinder rodless cavity interface (104) communicates and and the second actuator port (B1) of communicating of described overturning oil cylinder control valve (3); Described overturning oil cylinder control valve (3) have the second return opening (T2) that the second filler opening (P2) of communicating with described second actuator port (B1) and described return opening (102) communicate and the 3rd actuator port (A2) that overturning oil cylinder rod chamber interface (105) communicates and and the 4th actuator port (B2) that communicates of described overturning oil cylinder rodless cavity interface (106), and between described overturning oil cylinder rodless cavity interface (106) and described drawback cylinder rod chamber interface (103), be provided with the first one-way valve (6) and the sequence valve (7) of parallel connection.
2. the sequentially-operating valve of a kind of bringing onto load feedback according to claim 1, is characterized in that: described drawback cylinder rod chamber interface (103) and described drawback cylinder rodless cavity interface (104) place are provided with double-action Pilot operated check valve (8).
3. the sequentially-operating valve of a kind of bringing onto load feedback according to claim 1, is characterized in that: described overturning oil cylinder rodless cavity interface (106) place is provided with Pilot operated check valve (9).
4. the sequentially-operating valve of a kind of bringing onto load feedback according to claim 1, is characterized in that: the outlet port of described drawback cylinder relief valve (4) is provided with first throttle valve (10).
5. the sequentially-operating valve of a kind of bringing onto load feedback according to claim 1, is characterized in that: the outlet port of described overturning oil cylinder relief valve (5) is provided with second throttle (11).
6. the sequentially-operating valve that a kind of bringing onto load feeds back according to claim 1 or 2 or 3 or 4 or 5, is characterized in that: described valve body (1) is provided with import and is communicated with described second filler opening (P2) and exports the second one-way valve (12) be communicated with described filler opening (101).
7. the sequentially-operating valve that a kind of bringing onto load feeds back according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that: described drawback cylinder control valve (2) comprises the spool chamber (201) be located on described valve body (1), be located at the control spool (202) in described spool chamber (201), be located at the spring chamber (203) at described control spool (202) two ends, be located at the Compress Spring (204) in described spring chamber (203), be located at the middle annular groove (205) on described control spool (202), left end annular groove (206), right-hand member annular groove (207), to be located in described left end annular groove (206) and and the radial direction through hole (208) that communicates of spring chamber (203) and the sealing plug (209) that is located at described spool chamber (201) two ends.
8. the sequentially-operating valve that a kind of bringing onto load feeds back according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that: described overturning oil cylinder control valve (3) comprises the spool installation cavity (301) be located on described valve body (1), be located at the spool (302) in described spool installation cavity (301), be located at the end spring chamber (303) at described spool (302) two ends, be located at the end Compress Spring (304) in described end spring chamber (303), be located at the central ring oil groove (305) on described spool (302), left end endless-oil groove (306), right-hand member endless-oil groove (307), to be located in described left end oil ring groove (306) and and end spring chamber (303) radial oil through (308) of communicating and the end part seal plug screw (309) that is located at described spool installation cavity (301) two ends.
CN201520747400.9U 2015-09-25 2015-09-25 Take sequence action valve of load feedback Active CN204985138U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520747400.9U CN204985138U (en) 2015-09-25 2015-09-25 Take sequence action valve of load feedback

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520747400.9U CN204985138U (en) 2015-09-25 2015-09-25 Take sequence action valve of load feedback

Publications (1)

Publication Number Publication Date
CN204985138U true CN204985138U (en) 2016-01-20

Family

ID=55119511

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520747400.9U Active CN204985138U (en) 2015-09-25 2015-09-25 Take sequence action valve of load feedback

Country Status (1)

Country Link
CN (1) CN204985138U (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108488130A (en) * 2018-05-18 2018-09-04 宁波真格液压科技有限公司 A kind of control valve gear
CN108488132A (en) * 2018-05-18 2018-09-04 宁波真格液压科技有限公司 A kind of twin-tub autocontrol valve
CN108547814A (en) * 2018-05-18 2018-09-18 宁波真格液压科技有限公司 A kind of Multi-way valve device
CN108591159A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of autocontrol valve for pivot plow
CN108591153A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of multi-way valve
CN108591154A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of pivot plow automatically controls hydraulic valve
CN108591155A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of multiple directional control valve
CN108612693A (en) * 2018-05-18 2018-10-02 宁波真格液压科技有限公司 A kind of twin-tub control system with Multi-way valve device
CN108612694A (en) * 2018-05-18 2018-10-02 宁波真格液压科技有限公司 A kind of control valve
CN108612700A (en) * 2018-05-18 2018-10-02 宁波真格液压科技有限公司 Plug-in overturns control valve
CN108626188A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of autocontrol valve
CN108626195A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of control valve
CN108626189A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of control valve
CN108626196A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of fluid pressure valve device for double hydraulic cylinder sequentially-operating
CN108644173A (en) * 2018-05-18 2018-10-12 宁波真格液压科技有限公司 A kind of hydraulic valve
CN108644417A (en) * 2018-05-18 2018-10-12 宁波真格液压科技有限公司 A kind of valve for twin-tub control
CN108661973A (en) * 2018-05-18 2018-10-16 宁波真格液压科技有限公司 A kind of automatic turning control valve
CN108679029A (en) * 2018-05-18 2018-10-19 宁波真格液压科技有限公司 A kind of ram control valve
CN108679022A (en) * 2018-05-18 2018-10-19 宁波真格液压科技有限公司 A kind of twin-tub control system
CN108757625A (en) * 2018-05-18 2018-11-06 宁波真格液压科技有限公司 A kind of control valve

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108488130A (en) * 2018-05-18 2018-09-04 宁波真格液压科技有限公司 A kind of control valve gear
CN108488132A (en) * 2018-05-18 2018-09-04 宁波真格液压科技有限公司 A kind of twin-tub autocontrol valve
CN108547814A (en) * 2018-05-18 2018-09-18 宁波真格液压科技有限公司 A kind of Multi-way valve device
CN108591159A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of autocontrol valve for pivot plow
CN108591153A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of multi-way valve
CN108591154A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of pivot plow automatically controls hydraulic valve
CN108591155A (en) * 2018-05-18 2018-09-28 宁波真格液压科技有限公司 A kind of multiple directional control valve
CN108612693A (en) * 2018-05-18 2018-10-02 宁波真格液压科技有限公司 A kind of twin-tub control system with Multi-way valve device
CN108612694A (en) * 2018-05-18 2018-10-02 宁波真格液压科技有限公司 A kind of control valve
CN108612700A (en) * 2018-05-18 2018-10-02 宁波真格液压科技有限公司 Plug-in overturns control valve
CN108626188A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of autocontrol valve
CN108626195A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of control valve
CN108626189A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of control valve
CN108626196A (en) * 2018-05-18 2018-10-09 宁波真格液压科技有限公司 A kind of fluid pressure valve device for double hydraulic cylinder sequentially-operating
CN108644173A (en) * 2018-05-18 2018-10-12 宁波真格液压科技有限公司 A kind of hydraulic valve
CN108644417A (en) * 2018-05-18 2018-10-12 宁波真格液压科技有限公司 A kind of valve for twin-tub control
CN108661973A (en) * 2018-05-18 2018-10-16 宁波真格液压科技有限公司 A kind of automatic turning control valve
CN108679029A (en) * 2018-05-18 2018-10-19 宁波真格液压科技有限公司 A kind of ram control valve
CN108679022A (en) * 2018-05-18 2018-10-19 宁波真格液压科技有限公司 A kind of twin-tub control system
CN108757625A (en) * 2018-05-18 2018-11-06 宁波真格液压科技有限公司 A kind of control valve
CN108547814B (en) * 2018-05-18 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 Multi-way valve device
CN108644417B (en) * 2018-05-18 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 Valve for double-cylinder control
CN108644173B (en) * 2018-05-18 2019-12-24 江苏悦达专用车有限公司 Hydraulic valve
CN108591155B (en) * 2018-05-18 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 Multi-way reversing valve
CN108612693B (en) * 2018-05-18 2020-10-20 宁波真格液压科技有限公司 Double-cylinder control system with multi-way valve device
CN108612700B (en) * 2018-05-18 2020-11-24 安徽仕烽油压科技有限公司 Plug-in type turnover control valve

Similar Documents

Publication Publication Date Title
CN204985138U (en) Take sequence action valve of load feedback
ATE393343T1 (en) PRESSURE FEED VALVE
CN204312429U (en) A kind of hydraulic differential circuit system be made up of screw-in cartridge valve
CN203784001U (en) Overflow valve
DK2294331T3 (en) Hydraulic valve assembly
CN203836279U (en) Built-in pressure reducing valve
CN202510447U (en) Flow regulating valve
CN103321984A (en) Hydraulic control system for differential oil compensation with electric-hydraulic proportional cartridge valves
CN100999987B (en) Electrohydraulic compound switch controlling valve for oil water well working with pressure
CN205780914U (en) A kind of hand press valve
CN204704184U (en) Relief valve
CN103791143B (en) Be provided with the valve hydraulic actuator of fault feedback arrangement
CN203836337U (en) Oil inlet valve body of load-sensitive multi-way valve of mini-excavator
CN203412838U (en) Hydraulic control one-way valve for hydraulic system of excavator
CN203604777U (en) Valve hydraulic actuator provided with fault feedback structure
CN203614817U (en) Dual one-way throttle valve
CN2886256Y (en) Dynamic pressure sustaining valve
CN204985862U (en) Harvester is with whole four ways control valve
CN204041596U (en) Used with tractor composition formula servo distributor
CN201650909U (en) Hydraulic distributor of high-power tractor
CN204476903U (en) Locking selector valve
CN204533022U (en) A kind of pressure-gradient control valve be directly fixedly connected with commutator
CN105370931A (en) One-way valve with steel ball valve element
CN201246498Y (en) Pilot-controlled check valve with improved structure
CN208634125U (en) A kind of novel electro-hydraulic dual-purpose end cap

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Zhejiang Hulian New Energy Industry Technology Service Co.,Ltd.

Assignor: HUZHOU SHENGLI HYDRAULIC Co.,Ltd.

Contract record no.: X2023330000890

Denomination of utility model: A sequential action valve with load feedback

Granted publication date: 20160120

License type: Common License

Record date: 20231208

EE01 Entry into force of recordation of patent licensing contract