CN204533684U - A kind of anti-medium refluence Lift check valve - Google Patents
A kind of anti-medium refluence Lift check valve Download PDFInfo
- Publication number
- CN204533684U CN204533684U CN201520176208.9U CN201520176208U CN204533684U CN 204533684 U CN204533684 U CN 204533684U CN 201520176208 U CN201520176208 U CN 201520176208U CN 204533684 U CN204533684 U CN 204533684U
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- China
- Prior art keywords
- valve
- pod apertures
- medium
- spool
- spring
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- Expired - Fee Related
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Abstract
A kind of anti-medium refluence Lift check valve, belongs to valve technology field.Balance pod apertures by pressure medium before the anti-deviation parts of spool and valve, after valve to form, the anti-deviation parts of described spool are made up of adjusting screw, spring seat and spring, spring one end is fixed on spring seat, and valve core cavity is put in one end, and spring seat is fixed on valve gap by adjusting screw; Before described valve, after valve, pressure medium balance pod apertures is made up of upper pod apertures and lower pod apertures, and described lower pod apertures is positioned on valve body hub chassis plane; Described upper pod apertures is positioned in sleeve wall, and is positioned at the most promotion extreme position down 10mm place of spool.The utility model structure is simple, can rapid-closure damper, effectively prevents medium back flow.
Description
Technical field
The utility model belongs to valve technology field, specifically belongs to a kind of Lift check valve.
Background technique
Lift check valve is mainly arranged on horizontal pipeline, has the function ensureing medium directional flow and unlikely refluence.Lift check valve working principle enters valve body when medium, and the pressure of medium acts on thrust flap produced upwards, when medium thrust is greater than flap gravity, and valve open.When the power that pressure medium after valve acts on flap adds that flap self gravitation is greater than the power that upstream pressure acts on flap, valve closing, stops medium to flow backwards.Often there is refluence phenomenon in actual use in safety check, main cause is: spool opening state, the pressure that flap upper and lower surface medium produces is cancelled out each other, now declining to lean on spool to conduct oneself with dignity, and spool deadweight is very light, when valve backside pressure pushes away inclined spool, very easily caused spool to be stuck in sleeve, cause medium to flow backwards.
Summary of the invention
The purpose of this utility model is for described defect above, provides a kind of structure simple, can the anti-medium refluence Lift check valve of quick closedown.
The purpose of this utility model is achieved by the following technical programs.
A kind of anti-medium refluence Lift check valve, it is characterized in that, balance pod apertures by pressure medium before the anti-deviation parts of spool and valve, after valve to form, the anti-deviation parts of described spool are made up of adjusting screw, spring seat and spring, spring one end is fixed on spring seat, valve core cavity is put in one end, and spring seat is fixed on valve gap by adjusting screw; Before described valve, after valve, pressure medium balance pod apertures is made up of upper pod apertures and lower pod apertures, and described lower pod apertures is positioned on valve body hub chassis plane; Described upper pod apertures is positioned in sleeve wall, and is positioned at the most promotion extreme position down 10mm place of spool.
Described adjusting screw can clockwise and rotate counterclockwise.
Described lower pod apertures diameter is 5mm.
Described upper pod apertures diameter is 10mm.
Working principle of the present utility model is: medium advances into from valve, upwardly flap, spool is upward sliding in sleeve, in valve core cavity, medium is compressed, from the outside pressure release of upper pod apertures, when spool plane has blocked the upper pod apertures on sleeve, in valve core cavity, medium cannot pressure release, pressure increase to a certain extent, produces pressure medium and stops spool to move, avoid flap and sleeve direct collision to cause sleeve and flap to be out of shape.When pressure medium before valve is less than flap downward force, spool is under deadweight and spring action, and slide downward in sleeve, slides into the position of below pod apertures, and medium enters valve core cavity from upper pod apertures.The medium entering valve core cavity produces a down pressure, and flap is dropped down onto on valve seat fast, and with throttle down, after stoping valve, medium flows backwards.By adjusting screw, clockwise, be rotated counterclockwise to increase or reduce spring pre-add elastic force, with the medium worked under adapting to different pressures environment.
The beneficial effects of the utility model are: the utility model increases flap downward active force by spring force, can ensure, when flap is subject to that upwards active force is less than downward active force, flap to be fallen within rapidly on sealing surface of seat, to cut off medium refluence; Adjusting screw on valve gap can according to media operation pressure, clockwise or be rotated counterclockwise to increase or reduces spring force, passes through adjusting screw Compress Spring simultaneously, cause elasticity coefficient to decline to improve spring long operational time; Before valve set by the utility model, after valve, pressure medium balance pod apertures can be when the valve opened, spool is raised to more than pod apertures, cut off medium and enter valve core cavity, when the valves are closed, fall to being placed in below upper pod apertures by spool deadweight, spring force, just valve outlet port side medium can be caused valve core cavity, pressure medium produces a downward pressure, and valve sealing surface is close to.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram.
In figure, 1 adjusting screw, 2 valve gaps, 3 spring seats, pod apertures on 4,5 times pod apertures, 6 springs, 7 sleeves, 8 valve core cavities, 9 spools, 10 flaps, 11 valve seats.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As described in Figure 1, a kind of anti-medium refluence Lift check valve, balance pod apertures by pressure medium before the anti-deviation parts of spool and valve, after valve to form, the anti-deviation parts of described spool are made up of adjusting screw 1, spring seat 3 and spring 6, spring 6 one end is fixed on spring seat 3, valve core cavity 8 is put in one end, and spring seat 3 is fixed on valve gap 2 by adjusting screw 1; Before described valve, after valve, pressure medium balance pod apertures is made up of with lower pod apertures 5 upper pod apertures 4, and described lower pod apertures 5 is positioned on valve body hub 7 chassis plane; Described upper pod apertures 4 is positioned on sleeve 7 wall, and is positioned at the most promotion extreme position down 10mm place of spool 9.
Described adjusting screw 1 can clockwise and rotate counterclockwise.
Described lower pod apertures 5 diameter is 5mm.
Described upper pod apertures 4 diameter is 10mm.
Working principle of the present utility model is: medium advances into from valve, upwardly flap 10, spool 9 is upward sliding in sleeve 7, in valve core cavity 8, medium is compressed, from the outwards pressure release of upper pod apertures 4, when spool 9 plane has blocked the upper pod apertures 4 on sleeve 7, in valve core cavity 8, medium cannot pressure release, pressure increase to a certain extent, produces pressure medium and stops spool 9 to move, and avoids flap 10 and sleeve 7 direct collision to cause sleeve 7 and flap 10 to be out of shape.When pressure medium before valve is less than flap 10 downward force, spool 9 is under deadweight and spring 6 act on, and slide downward in sleeve 7, slides into the position of pod apertures less than 4, and medium enters valve core cavity 8 from upper pod apertures 4.The medium entering valve core cavity 8 produces a down pressure, makes flap 10 drop down onto on valve seat 11 fast, and with throttle down, after stoping valve, medium flows backwards.By adjusting screw 1, clockwise, be rotated counterclockwise to increase or reduce spring 6 pre-add elastic force, with the medium worked under adapting to different pressures environment.
Claims (4)
1. an anti-medium refluence Lift check valve, it is characterized in that: balance pod apertures by pressure medium before the anti-deviation parts of spool and valve, after valve and form, the anti-deviation parts of described spool are made up of adjusting screw (1), spring seat (3) and spring (6), spring (6) one end is fixed on spring seat (3), valve core cavity (8) is put in one end, and spring seat (3) is fixed on valve gap (2) by adjusting screw (1); Before described valve, after valve, pressure medium balance pod apertures is made up of upper pod apertures (4) and lower pod apertures (5), and described lower pod apertures (5) is positioned on valve body hub (7) chassis plane; Described upper pod apertures (4) is positioned on sleeve (7) wall, and is positioned at the most promotion extreme position down 10mm place of spool (9).
2. one according to claim 1 anti-medium refluence Lift check valve, is characterized in that: described adjusting screw (1) can clockwise and rotate counterclockwise.
3. one according to claim 1 anti-medium refluence Lift check valve, is characterized in that: described lower pod apertures (5) diameter is 5mm.
4. one according to claim 1 anti-medium refluence Lift check valve, is characterized in that: described upper pod apertures (4) diameter is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176208.9U CN204533684U (en) | 2015-03-27 | 2015-03-27 | A kind of anti-medium refluence Lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176208.9U CN204533684U (en) | 2015-03-27 | 2015-03-27 | A kind of anti-medium refluence Lift check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533684U true CN204533684U (en) | 2015-08-05 |
Family
ID=53747692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520176208.9U Expired - Fee Related CN204533684U (en) | 2015-03-27 | 2015-03-27 | A kind of anti-medium refluence Lift check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533684U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805366A (en) * | 2016-05-27 | 2016-07-27 | 中国科学院武汉岩土力学研究所 | Dry-wet separation method of dry-wet separation check valve for adjustable hydraulic tunnel engineering |
| CN105864470A (en) * | 2016-05-27 | 2016-08-17 | 中国科学院武汉岩土力学研究所 | Adjustable dry and wet separation check valve for hydraulic tunnel engineering |
-
2015
- 2015-03-27 CN CN201520176208.9U patent/CN204533684U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805366A (en) * | 2016-05-27 | 2016-07-27 | 中国科学院武汉岩土力学研究所 | Dry-wet separation method of dry-wet separation check valve for adjustable hydraulic tunnel engineering |
| CN105864470A (en) * | 2016-05-27 | 2016-08-17 | 中国科学院武汉岩土力学研究所 | Adjustable dry and wet separation check valve for hydraulic tunnel engineering |
| CN105805366B (en) * | 2016-05-27 | 2018-05-08 | 中国科学院武汉岩土力学研究所 | The separating dry space from moist space method of adjustable hydraulic tunnel engineering separating dry space from moist space non-return valve |
| CN105864470B (en) * | 2016-05-27 | 2018-09-14 | 中国科学院武汉岩土力学研究所 | Adjustable hydraulic tunnel engineering separating dry space from moist space non-return valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151204 Address after: 330096 Nanchang high tech Development Zone, Jin Sheng Industrial Park, Jiangxi Patentee after: China Tobacco Jiangxi Industrial LLC Address before: 334600 No. 7, Yongfeng Avenue, Guangfeng County, Shangrao, Jiangxi Patentee before: Guangfeng cigar mill of China Tobacco Jiangxi Industrial LLC |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210327 |