CN102102689B - Hydraulic one-way valve - Google Patents
Hydraulic one-way valve Download PDFInfo
- Publication number
- CN102102689B CN102102689B CN 201110036503 CN201110036503A CN102102689B CN 102102689 B CN102102689 B CN 102102689B CN 201110036503 CN201110036503 CN 201110036503 CN 201110036503 A CN201110036503 A CN 201110036503A CN 102102689 B CN102102689 B CN 102102689B
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- Prior art keywords
- valve body
- valve
- push rod
- control piston
- spring
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- 239000007788 liquid Substances 0.000 claims abstract description 69
- 230000008676 import Effects 0.000 claims description 13
- 244000273618 Sphenoclea zeylanica Species 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 10
- 239000002699 waste material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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
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 control fluid 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, namely to the Driving force of push rod, when needs are opened one-way valve, increase the fluid pressure of control liquid import, thereby promote 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 the 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, namely Pilot operated check valve separates with hinge bolt, needs to install respectively the location 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 connection function to hydraulic part and the pipeline of hydraulic system is provided, and namely integrates hinge bolt and Pilot operated check valve.
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 part below the head, and the following part of described valve head is provided with outside thread, and the valve wall of the following part of the head of valve body is provided with some crosspassages, 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, take crosspassage as liquid outlet, can crosspassage be liquid entering hole also simultaneously, the valve body lower end opening is liquid outlet, controls the switching of spool by push rod, namely realizes the open and close of one-way valve; The external shape of valve body is equivalent to a hinge bolt, can play connection function to hydraulic part and pipeline, makes the present invention integrate hinge bolt and Pilot operated check valve.
As improvement, described valve body lower end opening is liquid outlet, crosspassage is 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 take the valve body lower end opening as liquid outlet, and crosspassage is liquid entering hole, and when liquid entered from crosspassage, liquid flowed into and backs down main valve plug and flows out from liquid outlet, namely realizes the function of conventional one-way valve; Open one-way valve if adopt the hydraulic control mode, then pass into 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 flexibly and easily the switching of Pilot operated check valve, controllability is strong.
As improvement, described valve body lower end opening is liquid entering hole, crosspassage is 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 take the valve body lower end opening as liquid entering hole, and crosspassage is liquid outlet, and liquid flows into and backs down main valve plug and flows out from liquid outlet, namely realizes the function of conventional one-way valve; Open one-way valve if adopt the hydraulic control mode, then pass into 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 flexibly and easily the switching of Pilot operated check valve, 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, and can be the liquids recovery that is extruded by the control piston to fluid collection device, unlikely waste.
As improvement, described drainage passage is let out passage in being, let out channel setting in described in valve interior wall, be communicated with the cavity between liquid entering hole and control piston and the valve body, like this, can make the liquid that is extruded by the control piston come 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 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 part below the head, and the following part of described valve body 1 head is provided with outside thread, and the valve wall of the following part of the head of valve body is provided with some crosspassages, 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 liquid outlet, crosspassage is 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 liquid entering hole, crosspassage is 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 refers to be provided with bearing pin in the push rod lower end, is provided with cotter way at nonreturn valve core, and described bearing pin places in the cotter way; Perhaps be provided with cotter way in the push rod lower end, be provided with bearing pin at nonreturn valve core; Described spring I 10 has some, guarantees that push rod can withstand nonreturn valve core, when push rod moves, 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, described valve body 1 upper end is connected with the joint 16 with interior outer nut, and joint also is the part of valve body, also joint and valve body can be made one simultaneously, and 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 with bearing pin as between push rod and the nonreturn valve core, make certain operating range is arranged between fixed pole 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 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 (5)
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 part below the head, the following part of described valve body (1) head is provided with outside thread, the valve wall of the following part of the head of valve body is provided with some crosspassages, 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); Described valve body (1) lower ending opening place is liquid outlet, crosspassage is 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), 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 drainage passage communicates with cavity (12) between control piston (7) and 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 liquid entering hole, crosspassage is liquid outlet, 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.
3. Pilot operated check valve according to claim 1, 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).
4. Pilot operated check valve according to claim 1, it is characterized in that: described push rod (3) is hollow stem, the passage in the push rod is the drainage passage.
5. Pilot operated check valve according to claim 2 is characterized in that: described cotter way connects and refers to be provided with bearing pin in the push rod lower end, is provided with cotter way at nonreturn valve core, and described bearing pin places in the cotter way; Perhaps be provided with cotter way in the push rod lower end, be provided with bearing pin at nonreturn valve core.
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 CN102102689A (en) | 2011-06-22 |
| CN102102689B true CN102102689B (en) | 2013-04-10 |
Family
ID=44155679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110036503 Expired - Fee Related CN102102689B (en) | 2011-01-30 | 2011-01-30 | Hydraulic one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102102689B (en) |
Families Citing this family (11)
| 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 |
| CN102563141B (en) * | 2012-01-02 | 2013-11-27 | 林友根 | Direct-acting internally piloted one-way sequence valve |
| CN102563183A (en) * | 2012-01-02 | 2012-07-11 | 林友根 | Direct-acting externally 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 |
| CN106286456B (en) * | 2016-10-26 | 2018-12-07 | 燕山大学 | A kind of hydraulic control one-way valve |
| CN108953693B (en) * | 2018-09-20 | 2024-04-12 | 重庆九环机电有限公司 | Quick joint of one-way valve |
| 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 |
| CN110735931B (en) * | 2019-10-24 | 2020-11-24 | 佛山市顺德区美的洗涤电器制造有限公司 | Valve structure and household appliance |
| CN113551041B (en) * | 2021-07-19 | 2023-03-24 | 嘉兴腾狼智能科技有限公司 | Multipurpose double-flow valve |
Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001187974A (en) * | 1999-12-28 | 2001-07-10 | Howa Mach Ltd | Pilot check valve and rotary cylinder |
-
2011
- 2011-01-30 CN CN 201110036503 patent/CN102102689B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-187974A 2001.07.10 |
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| Publication number | Publication date |
|---|---|
| CN102102689A (en) | 2011-06-22 |
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Granted publication date: 20130410 |