CN104989851A - Inverted-pull push check valve - Google Patents
Inverted-pull push check valve Download PDFInfo
- Publication number
- CN104989851A CN104989851A CN201510398774.9A CN201510398774A CN104989851A CN 104989851 A CN104989851 A CN 104989851A CN 201510398774 A CN201510398774 A CN 201510398774A CN 104989851 A CN104989851 A CN 104989851A
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- China
- Prior art keywords
- valve
- liquid
- cavity
- hole
- valve body
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
Disclosed is an inverted-pull push check valve. The inverted-pull push check valve comprises a valve body and a valve element, wherein the valve element is arranged in the valve body. A liquid inlet, a liquid return opening, a working liquid inlet and a working liquid outlet are formed in the valve body. The valve element is arranged between the liquid inlet and the working liquid inlet. A spring is installed on the valve element in a sleeving mode, a throttling hole is formed in the top of the valve element, and a liquid return valve is arranged between the working liquid outlet and the liquid return opening. Working liquid enters the inverted-pull push check valve through the throttling hole formed in the valve element at the moment of startup, small flow of working liquid enters a push cavity of a piston cavity, and a jack is slowly started. When the pressure of the push cavity is increased, a valve port is completely opened, motions are accomplished, and the impact force at the moment of startup is effectively reduced.
Description
Technical field
The present invention relates to valve technology field, especially relate to one and draw pushing check valve.
Background technique
The advancing jack system of existing upside-down mounting; handling the moment of trying to stop people from fighting each other; the excessive active chamber being full of oil hydraulic cylinder instantaneously of valve flow; advancing jack and the moment impact between fitting that is connected; in the life-span of the component such as cross connecting head, shear pin that direct impact is connected with scraper-trough conveyer, the structures shape of upside-down mounting advancing jack locking chamber is rod end chamber, tries to stop people from fighting each other and often can cause the pressurized effect of jack; the safety valve passed frequently is opened, affects working life.
Summary of the invention
Not enough for prior art, technical problem to be solved by this invention is to provide a kind ofly draws pushing check valve, its buffer starting with soft start, reduces impact force.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
One draws pushing check valve, comprise valve body and be located at the spool in valve body, described valve body is provided with liquid entering hole, liquid return hole, work liquid entering hole, work liquid outlet, described spool is located between liquid entering hole and work liquid entering hole, valve core upper sleeve is equipped with spring, and be provided with throttle orifice at spool top, be provided with back liquid valve between described work liquid outlet and liquid return hole.
Further, described spool is the hollow cylinder structure of one end open, and the open-ended of hollow cylinder structure is connected with liquid entering hole, and throttle orifice is located at the sealed end of hollow cylinder structure.
Being provided with the cavity for arranging back liquid valve in described valve body, in valve body, being provided with the through hole of connection work liquid outlet and cavity, in through hole, be provided with the unidirectional spring valve that can flow to cavity from work liquid outlet.
Described time liquid valve comprises push rod, and described push rod one end is set with Compress Spring, and the push rod the other end is provided with piston, and piston is corresponding with through hole, is provided with the unidirectional spring valve that can flow to cavity from work liquid outlet in through hole; Be provided with valve pad by work liquid outlet place in the cavity of valve body, push rod is provided with projection, and protruding matching with valve pad forms back liquid valve port, and the cavity going back to liquid valve port side is connected with work liquid outlet, and the cavity returning liquid valve port opposite side is connected with liquid return hole.
The present invention compared with prior art, has the following advantages:
Start moment, working solution first enters from the throttle orifice spool, and the working solution of small flow enters the push chamber of piston cavity, and jack slowly starts, and when the pressure of push chamber raises, opens valve port completely, execution, effectively reduces the impact force starting moment.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is one-way valve sectional view of the present invention.
Fig. 2 is along B-B sectional view in Fig. 1.
Fig. 3 is non-return valve operational schematic diagram of the present invention.
In figure: 1. push rod, 2. end cap, 3. valve body, 4. spring I, 5. valve pad, 6. valve holder, 7. guide pin bushing, 8. piston, 9. spool, the 10. spacing swivel nut of spring II, 11., 12. push rods, 13. spring III, 14. screw plugs.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1 to Figure 3, this draws pushing check valve, the spool 9 comprising valve body 3 and be located in valve body 3, and wherein, valve body 3 side is provided with liquid entering hole PA and liquid return hole PB side by side, valve body 3 opposite side is provided with side by side work liquid entering hole A and work liquid outlet B.
Liquid entering hole is oppositely arranged with work liquid entering hole and is located on valve body, form valve pocket between the two, spool 9 is provided with in valve pocket, spool 9 is the hollow cylinder structure of one end open, the connection corresponding with liquid entering hole of hollow cylinder structural openings end, in liquid entering hole, be provided with spacing swivel nut 11, between spacing swivel nut 11 and the open end of hollow cylinder structure, be provided with spring II 10.
In valve body 3, corresponding work liquid entering hole is provided with step, step formation valve port corresponding with the sealed end of spool, and the sealed end of spool 9 is provided with throttle orifice, and throttle orifice makes liquid entering hole be connected with work liquid entering hole.
Liquid valve is provided with back between valve body 3 inherence work liquid outlet and liquid return hole, namely the cavity for arranging back liquid valve is provided with in valve body, the through hole of connection work liquid outlet and cavity is provided with in valve body, the unidirectional spring valve that can flow to cavity from work liquid outlet is provided with in through hole, the spring III 13 that unidirectional spring valve comprises push rod 12 and is located on push rod 12, push rod 12 is arranged on valve body by screw plug 14.
Returning liquid valve is arranged in the cavity of valve body, and return liquid valve and comprise push rod 1, push rod 1 loads in cavity by the end cap 2 on valve body, the spring I 4 be enclosed within push rod is provided with between push rod and end cap, spring I is in compressive state, and push rod 1 the other end is provided with piston 8, and piston is corresponding with through hole.
The guide pin bushing 7 of piston movement is provided with in the cavity of valve body, namely piston is located in guide pin bushing, guide pin bushing 7 is fixed on valve body, guide pin bushing 7 is provided with valve holder 6 with the corresponding end of work liquid outlet, valve holder 6 is provided with valve pad 5, is provided with projection in the middle part of push rod, protruding matching with valve pad forms back liquid valve port, the cavity going back to liquid valve port side is connected with work liquid outlet, and the cavity returning liquid valve port opposite side is connected with liquid return hole.
Valve body 3 is provided with relief valve port B ˊ, and relief valve port is corresponding with work liquid outlet, and be provided with rubber valve block in passage between relief valve port and work liquid outlet, when pressure is excessive, rubber valve block is extruded distortion, opens passage and carries out release.
This draws pushing check valve for the control of coal mine hydraulic supporting hydraulic system, realizes unlatching and the locking of advancing jack active chamber; Start moment, working solution first enters from the throttle orifice spool, and the working solution of small flow enters the push chamber of piston cavity, and jack slowly starts, and when the pressure of push chamber raises, opens valve port completely, execution, effectively reduces the impact force starting moment.
During work, first enter work liquid entering hole A from the throttle orifice spool by the working solution of liquid entering hole PA, jack slowly starts, and the pressure of the liquid entering hole that works afterwards raises, and is opened by the valve port of spool, and normal feed liquor promotes jack work; The liquid of liquid entering hole of now working is opened unidirectional spring valve and is entered in cavity, promotes piston, and piston driving push rod compresses, and the valve port between push rod projection and valve pad is opened, and work liquid outlet B is connected with liquid return hole PB and carries out back liquid.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that design of the present invention and technological scheme are carried out; or design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (4)
1. one kind is drawn pushing check valve, comprise valve body and be located at the spool in valve body, it is characterized in that: described valve body is provided with liquid entering hole, liquid return hole, work liquid entering hole, work liquid outlet, described spool is located between liquid entering hole and work liquid entering hole, valve core upper sleeve is equipped with spring, and be provided with throttle orifice at spool top, be provided with back liquid valve between described work liquid outlet and liquid return hole.
2. draw pushing check valve as claimed in claim 1, it is characterized in that: described spool is the hollow cylinder structure of one end open, and the open-ended of hollow cylinder structure is connected with liquid entering hole, and throttle orifice is located at the sealed end of hollow cylinder structure.
3. draw pushing check valve as claimed in claim 2, it is characterized in that: in described valve body, be provided with the cavity for arranging back liquid valve, be provided with the through hole of connection work liquid outlet and cavity in valve body, in through hole, be provided with the unidirectional spring valve that can flow to cavity from work liquid outlet.
4. draw pushing check valve as claimed in claim 3, it is characterized in that: described time liquid valve comprises push rod, described push rod one end is set with Compress Spring, and the push rod the other end is provided with piston, piston is corresponding with through hole, is provided with the unidirectional spring valve that can flow to cavity from work liquid outlet in through hole; Be provided with valve pad by work liquid outlet position in the cavity of valve body, push rod is provided with projection, and protruding matching with valve pad forms back liquid valve port, and the cavity going back to liquid valve port side is connected with work liquid outlet, and the cavity returning liquid valve port opposite side is connected with liquid return hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510398774.9A CN104989851A (en) | 2015-07-07 | 2015-07-07 | Inverted-pull push check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510398774.9A CN104989851A (en) | 2015-07-07 | 2015-07-07 | Inverted-pull push check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104989851A true CN104989851A (en) | 2015-10-21 |
Family
ID=54301706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510398774.9A Pending CN104989851A (en) | 2015-07-07 | 2015-07-07 | Inverted-pull push check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104989851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001177A (en) * | 2021-12-24 | 2022-02-01 | 新乡市新华液压机械有限公司 | Pneumatic control one-way damping valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390696U (en) * | 1986-11-29 | 1988-06-13 | ||
| SU1612118A1 (en) * | 1987-03-02 | 1990-12-07 | Специальное Проектно-Конструкторское И Технологическое Бюро Всесоюзного Производственного Объединения "Союзгеотехника" | Hydraulic drive |
| DE9210903U1 (en) * | 1992-08-14 | 1992-11-12 | Kinshofer Greiftechnik GmbH, 8176 Waakirchen | Unlockable check valve |
| CN1914446A (en) * | 2004-02-04 | 2007-02-14 | 克斯美库股份有限公司 | Flow control valve and cylinder device with flow control valve |
| CN202001671U (en) * | 2011-05-10 | 2011-10-05 | 杭州春江阀门有限公司 | Right-angled pressure reduction type backflow preventer |
| CN202927150U (en) * | 2012-12-04 | 2013-05-08 | 中联重科股份有限公司 | Check valve |
| CN103225632A (en) * | 2012-01-27 | 2013-07-31 | 罗伯特·博世有限公司 | Valve assembly for a mobile work machine |
| CN204878877U (en) * | 2015-07-07 | 2015-12-16 | 安徽凡尔煤矿设备制造有限公司 | Draw lapse check valve |
-
2015
- 2015-07-07 CN CN201510398774.9A patent/CN104989851A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390696U (en) * | 1986-11-29 | 1988-06-13 | ||
| SU1612118A1 (en) * | 1987-03-02 | 1990-12-07 | Специальное Проектно-Конструкторское И Технологическое Бюро Всесоюзного Производственного Объединения "Союзгеотехника" | Hydraulic drive |
| DE9210903U1 (en) * | 1992-08-14 | 1992-11-12 | Kinshofer Greiftechnik GmbH, 8176 Waakirchen | Unlockable check valve |
| CN1914446A (en) * | 2004-02-04 | 2007-02-14 | 克斯美库股份有限公司 | Flow control valve and cylinder device with flow control valve |
| CN202001671U (en) * | 2011-05-10 | 2011-10-05 | 杭州春江阀门有限公司 | Right-angled pressure reduction type backflow preventer |
| CN103225632A (en) * | 2012-01-27 | 2013-07-31 | 罗伯特·博世有限公司 | Valve assembly for a mobile work machine |
| CN202927150U (en) * | 2012-12-04 | 2013-05-08 | 中联重科股份有限公司 | Check valve |
| CN204878877U (en) * | 2015-07-07 | 2015-12-16 | 安徽凡尔煤矿设备制造有限公司 | Draw lapse check valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001177A (en) * | 2021-12-24 | 2022-02-01 | 新乡市新华液压机械有限公司 | Pneumatic control one-way damping valve |
| CN114001177B (en) * | 2021-12-24 | 2022-04-01 | 新乡市新华液压机械有限公司 | Pneumatic control one-way damping valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151021 |
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| RJ01 | Rejection of invention patent application after publication |