CN102102689A - Hydraulic one-way valve - Google Patents

Hydraulic one-way valve Download PDF

Info

Publication number
CN102102689A
CN102102689A CN2011100365030A CN201110036503A CN102102689A CN 102102689 A CN102102689 A CN 102102689A CN 2011100365030 A CN2011100365030 A CN 2011100365030A CN 201110036503 A CN201110036503 A CN 201110036503A CN 102102689 A CN102102689 A CN 102102689A
Authority
CN
China
Prior art keywords
valve
push rod
pilot operated
spring
operated check
Prior art date
Application number
CN2011100365030A
Other languages
Chinese (zh)
Other versions
CN102102689B (en
Inventor
林友根
Original Assignee
林友根
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 林友根 filed Critical 林友根
Priority to CN 201110036503 priority Critical patent/CN102102689B/en
Publication of CN102102689A publication Critical patent/CN102102689A/en
Application granted granted Critical
Publication of CN102102689B publication Critical patent/CN102102689B/en

Links

Abstract

The invention discloses a hydraulic one-way valve which comprises a valve body (1), a main valve plug (2) and a top rod (3), wherein the valve body (1) is provided with a liquid inlet (4), a liquid outlet (5), a control liquid inlet (6) and a liquid discharge channel; the main valve plug (2) and the top rod (3) are arranged in the valve body (1); the outer diameter of the upper end head part of the valve body (1) is greater than the outer diameter of the part below the head part; the part below the head part of the valve body (1) is provided with outer screw threads; the valve wall of the part below the head part of the valve body is provided with a plurality of transverse channels; the valve body is through up and down; the upper part of the top rod (3) is provided with a control piston (7); the control piston is also provided with a spring II (8); and one end of the spring II is fixed on the control piston (7), and the other end of the spring II is fixed on the valve body (1). By adopting the hydraulic one-way valve provided by the invention, the hydraulic components and pipelines can be connected, thus an articulated bolt and the hydraulic one-way valve can be integrated.

Description

Pilot operated check valve
Technical field
The present invention relates to valve field, is a kind of Pilot operated check valve specifically.
Background technique
The Pilot operated check valve Pilot operated check valve is to rely on controlling liquid pressure, the valve that one-way valve is opened.The Pilot operated check valve of prior art generally comprises valve body, spool and push rod, and described valve body is provided with liquid entering hole, liquid outlet, the import of control liquid and drainage passage, and described spool and push rod are arranged in the valve body; By regulating the fluid pressure of control liquid import, promptly, when needs are opened one-way valve, increase the fluid pressure of control liquid import, thereby promote push rod the Driving force of push rod, push rod then promotes and opens spool, thereby makes one-way valve opens.
Because Pilot operated check valve generally is used in the hydraulic system, and often need hollow hinge bolt to connect between hydraulic part in the hydraulic system and the pipeline, when needs use Pilot operated check valve, need Pilot operated check valve is installed on pipeline separately, promptly Pilot operated check valve separates with hinge bolt, need distinguish installing and locating when installing and use, operation bothers relatively, this moment, rate of fault was also higher, was unfavorable for maintenance, had brought inconvenience to use.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of Pilot operated check valve that can play interconnect function to the hydraulic part and the pipeline of hydraulic system is provided, and promptly collecting hinge bolt and Pilot operated check valve is one.
Technical solution of the present invention is, a kind of Pilot operated check valve of following structure is provided, comprise valve body, main valve plug and push rod, described valve body is provided with liquid entering hole, liquid outlet, the import of control liquid and drainage passage, and described main valve plug and push rod are arranged in the valve body.
The external diameter of described valve body upper end head is greater than the external diameter of head with the bottom, and described valve head is provided with outside thread with the bottom, and the head of valve body is provided with some crosspassages with the valve wall of bottom, described valve body up/down perforation; The top of described push rod is provided with control piston, also is provided with spring II on the control piston, and spring II one end is fixed on the control piston, and the other end is fixed on the valve body.
Adopt above structure, the present invention compared with prior art has the following advantages: adopt structure of the present invention, can the valve body lower end opening be liquid entering hole both, with the crosspassage is liquid outlet, can crosspassage be liquid entering hole also simultaneously, the valve body lower end opening is a liquid outlet, controls the switching of spool by push rod, promptly realizes the open and close of one-way valve; The external shape of valve body is equivalent to a hinge bolt, can play interconnect function to hydraulic part and pipeline, makes the present invention collect hinge bolt and Pilot operated check valve is an one.
As improvement, described valve body lower end opening is a liquid outlet, crosspassage is a liquid entering hole, described Pilot operated check valve also comprises back-up ring, spring I and nonreturn valve core, described back-up ring is installed in valve body lower end, described nonreturn valve core is installed on the interior valve port of main valve plug, and described spring I one end is fixed on the back-up ring, and the other end is fixed on the nonreturn valve core; Described drainage passage communicates with cavity between control piston and the valve body.This structure is to be liquid outlet with the valve body lower end opening, and crosspassage is a liquid entering hole, when liquid when crosspassage enters, liquid flows into and also backs down main valve plug and flow out from liquid outlet, promptly realizes the function of conventional one-way valve; Open one-way valve if adopt the hydraulic control mode, then feed the liquid of certain pressure in the import of control liquid, fluid pressure forces control piston to move down, and overcomes the resistance of spring II, moves downward thereby promote push rod, push rod promotes nonreturn valve core, at this moment, main valve plug and nonreturn valve core are all opened, and the liquid of liquid outlet can successfully oppositely flow out from liquid entering hole by main valve plug, control the switching of Pilot operated check valve flexibly and easily, controllability is strong.
As improvement, described valve body lower end opening is a liquid entering hole, crosspassage is a liquid outlet, described Pilot operated check valve also comprises back-up ring, spring I and nonreturn valve core, described back-up ring is installed in the main valve plug, and described push rod lower end is deployed in main valve plug and with nonreturn valve core and is connected by cotter way, and the end of described spring I is fixed on the push rod lower end, the other end is fixed on the nonreturn valve core, and the import of described control liquid communicates with cavity between control piston and the valve body.This structure is to be liquid entering hole with the valve body lower end opening, and crosspassage is a liquid outlet, and liquid flows into and also backs down main valve plug and flow out from liquid outlet, promptly realizes the function of conventional one-way valve; Open one-way valve if adopt the hydraulic control mode, then feed the liquid of certain pressure in the import of control liquid, fluid pressure forces on the control piston and moves, and overcomes the resistance of spring II, moves upward thereby promote push rod, push rod drives nonreturn valve core and leaves valve port, at this moment, main valve plug is also opened under the effect of liquid entering hole fluid pressure, and the liquid of liquid outlet can successfully oppositely flow out from liquid entering hole by main valve plug, control the switching of Pilot operated check valve flexibly and easily, controllability is strong.
As improvement, described drainage passage is the passage that leaks, and the described passage that leaks is communicated with extraneous fluid collection device, like this, can arrive fluid collection device, unlikely waste to the liquids recovery that controlled piston extrudes.
As improvement, described drainage passage is let out passage in being, letting out passage in described is arranged in the valve interior wall, be communicated with the cavity between liquid entering hole and control piston and the valve body, like this, the liquid that controlled piston is extruded comes back to liquid entering hole, recycling, need not fluid collection device, easy to use, can not cause waste yet.
As improvement, described push rod is a hollow stem, and the passage in the push rod is the drainage passage, like this, need not to establish in addition the drainage passage, and also the liquid that extrudes can be repeated to get back to the liquid entering hole place simultaneously and utilize.
As improvement, the surface of contact of described main valve plug and valve body is provided with a seal ring, like this, when not needing main valve plug to open, can make the fine sealing of main valve plug and valve body.
Description of drawings
Fig. 1 is Pilot operated check valve embodiment's 1 of the present invention structural representation.
Fig. 2 is Pilot operated check valve embodiment's 2 of the present invention structural representation.
Fig. 3 is Pilot operated check valve embodiment's 3 of the present invention structural representation.
As shown in the figure 1, valve body, 2, main valve plug, 3, push rod, 4, liquid entering hole, 5, liquid outlet, 6, the import of control liquid, 7, control piston, 8, spring II, 9, back-up ring, 10, spring I, 11, nonreturn valve core, 12, cavity, 13, the passage that leaks, 14, in let out passage, 15, seal ring, 16, joint, 17, bearing pin, 18, cotter way.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Pilot operated check valve of the present invention comprises valve body 1, main valve plug 2 and push rod 3, and described valve body 1 is provided with liquid entering hole 4, liquid outlet 5, control liquid import 6 and drainage passage, and described main valve plug 2 and push rod 3 are arranged in the valve body 1.
The external diameter of described valve body 1 upper end head is greater than the external diameter of head with the bottom, and described valve body 1 head is provided with outside thread with the bottom, and the head of valve body is provided with some crosspassages with the valve wall of bottom, described valve body up/down perforation; The top of described push rod 3 is provided with control piston 7, also is provided with spring II8 on the control piston 7, and spring II8 one end is fixed on the control piston 7, and the other end is fixed on the valve body 1.
As shown in Figure 1, described valve body 1 lower ending opening place is a liquid outlet, crosspassage is a liquid entering hole, described Pilot operated check valve also comprises back-up ring 9, spring I 10 and nonreturn valve core 11, described back-up ring 9 is installed in valve body lower end, described nonreturn valve core 11 is installed on the valve port in the main valve plug 2, and described spring I 10 1 ends are fixed on the back-up ring 9, and the other end is fixed on the nonreturn valve core 11; Described spring II8 one end is fixed on the control piston, and the other end is fixed on the valve body; Described drainage passage communicates with cavity 12 between control piston 7 and the valve body 1.
Described drainage passage is the passage 13 that leaks, and the described passage 13 that leaks is communicated with extraneous fluid collection device.
Described drainage passage is let out passage 14 in being, lets out passage 14 in described to be arranged in valve body 1 inwall, is communicated with the cavity 12 between liquid entering hole 4 and control piston 7 and the valve body 1.
Described main valve plug 2 is provided with a seal ring 15 with the surface of contact of valve body 1.
As shown in Figure 2, described valve body 1 lower ending opening place is a liquid entering hole, crosspassage is a liquid outlet, described Pilot operated check valve also comprises back-up ring 9, spring I 10 and nonreturn valve core 11, described back-up ring 9 is installed in the main valve plug 2, described push rod 3 lower ends are deployed in main valve plug 2 and are connected by cotter way with nonreturn valve core 11, the end of described spring I 10 is fixed on push rod 3 lower ends, the other end is fixed on the nonreturn valve core 11, and the import 6 of described control liquid communicates with cavity 12 between control piston and the valve body; Described cotter way connects, and is meant in the push rod lower end to be provided with bearing pin that be provided with cotter way on nonreturn valve core, described bearing pin places in the cotter way; Perhaps be provided with cotter way, on nonreturn valve core, be provided with bearing pin in the push rod lower end; Described spring I 10 has some, guarantees that push rod can withstand nonreturn valve core, when moving on push rod, also can drive nonreturn valve core simultaneously toward motion, is that nonreturn valve core is opened.
Described push rod 3 is made hollow stem, and the passage in the push rod is the drainage passage.
As shown in Figure 1 and Figure 2, the joint 16 of outer nut in described valve body 1 upper end is connected with and has, joint also is the part of valve body, also joint and valve body can be made one simultaneously, the joint can be used as control liquid import or drainage passage.
As shown in Figure 3, embodiment 3 structure and embodiment's 2 structure is basic identical, equally all adopt cotter way to be connected as between push rod and the nonreturn valve core with bearing pin, make and decide that certain operating range is arranged between bar and the nonreturn valve core, and in this operating range, pressure or the pulling force of spring I 10 arranged also between the two; Two shape differences that embodiment is a nonreturn valve core, nonreturn valve core head among the embodiment 2 is circular, and the head of embodiment 3 nonreturn valve core is taper, and the two can both realize the present invention's function certainly, and the shape of nonreturn valve core also is not limited to above-mentioned several in addition.

Claims (7)

1. Pilot operated check valve, comprise valve body (1), main valve plug (2) and push rod (3), described valve body (1) is provided with liquid entering hole (4), liquid outlet (5), control liquid import (6) and drainage passage, described main valve plug (2) and push rod (3) are arranged in the valve body (1), it is characterized in that: the external diameter of described valve body (1) upper end head is greater than the external diameter of head with the bottom, described valve body (1) head is provided with outside thread with the bottom, the head of valve body is provided with some crosspassages with the valve wall of bottom, described valve body up/down perforation; The top of described push rod (3) is provided with control piston (7), also is provided with spring II (8) on the control piston (7), and spring II (8) one ends are fixed on the control piston (7), and the other end is fixed on the valve body (1).
2. Pilot operated check valve according to claim 1, it is characterized in that: described valve body (1) lower ending opening place is a liquid outlet, crosspassage is a liquid entering hole, described Pilot operated check valve also comprises back-up ring (9), spring I (10) and nonreturn valve core (11), described back-up ring (9) is installed in valve body lower end, described nonreturn valve core (11) is installed on the interior valve port of main valve plug (2), and described spring I (10) one ends are fixed on the back-up ring (9), and the other end is fixed on the nonreturn valve core (11); Described spring II (8) one ends are fixed on the control piston, and the other end is fixed on the valve body; Described drainage passage communicates with cavity (12) between control piston (7) and the valve body (1).
3. Pilot operated check valve according to claim 1, it is characterized in that: described valve body (1) lower ending opening place is a liquid entering hole, crosspassage is a liquid outlet, described Pilot operated check valve also comprises back-up ring (9), spring I (10) and nonreturn valve core (11), described back-up ring (9) is installed in the main valve plug (2), described push rod (3) lower end is deployed in main valve plug (2) and with nonreturn valve core (11) and is connected by cotter way, the end of described spring I (10) is fixed on push rod (3) lower end, the other end is fixed on the nonreturn valve core (11), and described control liquid import (6) communicates with cavity (12) between control piston and the valve body.
4. Pilot operated check valve according to claim 1 is characterized in that: described drainage passage is communicated with extraneous fluid collection device for the passage that leaks (13), the described passage that leaks (13).
5. Pilot operated check valve according to claim 1 and 2, it is characterized in that: described drainage passage is let out passage (14) in being, let out passage (14) in described and be arranged in valve body (1) inwall, be communicated with the cavity (12) between liquid entering hole (4) and control piston (7) and the valve body (1).
6. Pilot operated check valve according to claim 1 is characterized in that: described push rod (3) is a hollow stem, and the passage in the push rod is the drainage passage.
7. Pilot operated check valve according to claim 3 is characterized in that: described cotter way connection is meant in the push rod lower end and is provided with bearing pin that be provided with cotter way on nonreturn valve core, described bearing pin places in the cotter way; Perhaps be provided with cotter way, on nonreturn valve core, be provided with bearing pin in the push rod lower end.
CN 201110036503 2011-01-30 2011-01-30 Hydraulic one-way valve CN102102689B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110036503 CN102102689B (en) 2011-01-30 2011-01-30 Hydraulic one-way valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110036503 CN102102689B (en) 2011-01-30 2011-01-30 Hydraulic one-way valve

Publications (2)

Publication Number Publication Date
CN102102689A true CN102102689A (en) 2011-06-22
CN102102689B CN102102689B (en) 2013-04-10

Family

ID=44155679

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110036503 CN102102689B (en) 2011-01-30 2011-01-30 Hydraulic one-way valve

Country Status (1)

Country Link
CN (1) CN102102689B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338136A (en) * 2011-10-01 2012-02-01 中色科技股份有限公司 Combined leakage-free direction valve
CN102563183A (en) * 2012-01-02 2012-07-11 林友根 Direct-acting externally piloted one-way sequence valve
CN102563141A (en) * 2012-01-02 2012-07-11 林友根 Direct-acting internally piloted one-way sequence valve
CN103470564A (en) * 2013-09-22 2013-12-25 太仓康茂电子有限公司 Pilot-operated check valve
CN103742468A (en) * 2013-10-28 2014-04-23 江苏合丰机械制造有限公司 High-pressure pilot operated check valve
CN104455568A (en) * 2014-10-30 2015-03-25 无锡市威海达机械制造有限公司 Check valve capable of reducing starting pressure
CN106286456A (en) * 2016-10-26 2017-01-04 燕山大学 A kind of hydraulic control one-way valve
CN109208711A (en) * 2018-10-31 2019-01-15 杭州铭展网络科技有限公司 A kind of cistern for saving detergent
WO2021077578A1 (en) * 2019-10-24 2021-04-29 佛山市顺德区美的洗涤电器制造有限公司 Valve structure and household appliance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065708A (en) * 1991-04-09 1992-10-28 刘思澜 The sequence fluid one way valve of low controlling-pressure
CN2222272Y (en) * 1994-10-08 1996-03-13 李小示 Hydraulic control one-way valve
JP2001187974A (en) * 1999-12-28 2001-07-10 Howa Mach Ltd Pilot check valve and rotary cylinder
CN101943202A (en) * 2010-08-22 2011-01-12 林友根 Link bolt with pilot type reducing valve
CN202001415U (en) * 2011-01-30 2011-10-05 林友根 Hydraulic control one-way valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065708A (en) * 1991-04-09 1992-10-28 刘思澜 The sequence fluid one way valve of low controlling-pressure
CN2222272Y (en) * 1994-10-08 1996-03-13 李小示 Hydraulic control one-way valve
JP2001187974A (en) * 1999-12-28 2001-07-10 Howa Mach Ltd Pilot check valve and rotary cylinder
CN101943202A (en) * 2010-08-22 2011-01-12 林友根 Link bolt with pilot type reducing valve
CN202001415U (en) * 2011-01-30 2011-10-05 林友根 Hydraulic control one-way valve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338136A (en) * 2011-10-01 2012-02-01 中色科技股份有限公司 Combined leakage-free direction valve
CN102563183A (en) * 2012-01-02 2012-07-11 林友根 Direct-acting externally piloted one-way sequence valve
CN102563141A (en) * 2012-01-02 2012-07-11 林友根 Direct-acting internally piloted one-way sequence valve
CN102563141B (en) * 2012-01-02 2013-11-27 林友根 Direct-acting internally piloted one-way sequence valve
CN103470564A (en) * 2013-09-22 2013-12-25 太仓康茂电子有限公司 Pilot-operated check valve
CN103742468A (en) * 2013-10-28 2014-04-23 江苏合丰机械制造有限公司 High-pressure pilot operated check valve
CN104455568A (en) * 2014-10-30 2015-03-25 无锡市威海达机械制造有限公司 Check valve capable of reducing starting pressure
CN106286456A (en) * 2016-10-26 2017-01-04 燕山大学 A kind of hydraulic control one-way valve
CN109208711A (en) * 2018-10-31 2019-01-15 杭州铭展网络科技有限公司 A kind of cistern for saving detergent
CN109208711B (en) * 2018-10-31 2020-10-30 台州市黄岩恒多模业有限公司 Toilet water tank capable of saving detergent
WO2021077578A1 (en) * 2019-10-24 2021-04-29 佛山市顺德区美的洗涤电器制造有限公司 Valve structure and household appliance

Also Published As

Publication number Publication date
CN102102689B (en) 2013-04-10

Similar Documents

Publication Publication Date Title
CN105026111B (en) Hydraulic hammer with coaxial accumulator and piston
US20130081725A1 (en) Time delay valve
CN201062598Y (en) Pilot discharge valve
US20100282989A1 (en) Valve
CN101435518B (en) Liquid level control valve
RU2529074C2 (en) Throttle with automatic cleaning of throttling channel
WO2012052759A2 (en) Fluid injection device
WO2016145453A1 (en) Low activation force piston valve
CN202810784U (en) Underground intelligent switch device
CN105240577A (en) Remote measurement and control flow dividing valve and flow dividing controller
CN102414395B (en) Valve system for drilling systems
CN201531483U (en) Single-acting fast closing/double-acting boosting hydraulic cylinder
WO2005099341B1 (en) Conical piston solids discharge centrifugal separator
CN100359230C (en) Composite dual-supporting double-speed multifunctional valve
CN103363163A (en) Decompression valve for electro-hydraulic servo injection modeling machine
CN204299558U (en) Delayed start-up sliding sleeve
CN109589670B (en) Automatic net cleaning device for sewage filtration
CN104265716A (en) Ultrahigh pressure pilot operated relief valve
CN202220765U (en) Cartridge inserted valve with stroke limitation of position detection of valve core thereof
US8104741B2 (en) Water box toilet sensing flushing system
CN201711034U (en) Backwash filter
CN204126598U (en) Repeatedly activate bypass system
CN202012329U (en) Mud anti-splashing valve for kelly bar
CN201696728U (en) Floating ball valve
CN101085667A (en) Opening-closing control mechanism for single-rope bucket grab

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant