CN202360490U - Safety exhaust valve with self-locking function - Google Patents
Safety exhaust valve with self-locking function Download PDFInfo
- Publication number
- CN202360490U CN202360490U CN2011204558964U CN201120455896U CN202360490U CN 202360490 U CN202360490 U CN 202360490U CN 2011204558964 U CN2011204558964 U CN 2011204558964U CN 201120455896 U CN201120455896 U CN 201120455896U CN 202360490 U CN202360490 U CN 202360490U
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- CN
- China
- Prior art keywords
- self
- valve plug
- locking device
- valve
- auto
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- 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.)
- Expired - Fee Related
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- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The utility model discloses a safety exhaust valve with a self-locking function, which comprises a valve hole, a valve plug (1) and a self-locking device (4), wherein the front end of the valve hole is in sealing fit with the valve plug (1), and the rear end of the valve hole is in tight fit with the self-locking device (4). The self-locking device (4) limits space for complete loosening of the valve plug (1), i.e., the distance between the valve plug (1) and the self-locking device (4) is less than an exit distance caused by the fact that the valve plug (4) is unscrewed completely, so that existing exhaust valve plug (1) of the prior art is prevented from being loosened and flying out, or safety accidents caused by the fact that the valve plug (1) is loosened so much that the valve plug is pressed to fly out and hurts people during active pressure relief are avoided. The safety exhaust valve with the self-locking function has the advantages of being good in sealing effect, long in maintenance-free period, simple in structure, and stable and reliable in working.
Description
Technical field
The utility model belongs to the hydraulic equipment technical field, is specifically related to a kind of safety exhaust with auto-lock function.
Background technique
The oil hydraulic cylinder outlet valve is the indispensable safety installations of oil hydraulic cylinder, and the outlet valve of existing technology is a taper hole sealed type outlet valve.During working state, valve plug is screwed; When needing to get rid of the hydraulic pressure gas in the jar, slowly unscrew valve plug, slowly get rid of the hydraulic pressure gas in the jar with spanner.This outlet valve simple in structure has a fatal defective, and promptly valve plug become flexible because of the work of oil hydraulic cylinder vibrations easily, even deviates from or misoperation during the active release, unscrews excessively also to cause valve plug to be extruded by pressurized gas.The valve plug that flies out at a high speed causes casualties or device damage easily, brings very big hidden danger to production safety.For this reason, the design people develops a kind of oil hydraulic cylinder safety exhaust with auto-lock function through concentrating on studies, and evidence is respond well.
The model utility content
It is a kind of simple in structure that the purpose of the utility model is to provide, the oil hydraulic cylinder safety exhaust with auto-lock function that processing and fabricating is easy.
The purpose of the utility model is achieved in that and comprises valve opening, valve plug and self-locking device that described valve opening front end and valve plug are sealed and matched, rear end and self-locking device drive fit.
The utility model self-locking device limited the space that valve plug gets loose fully; Be that distance between valve plug and the self-locking device withdraws from distance when unscrewing fully less than valve plug; Preventing effectively that existing technology exhaust valve plug is loosening flies out, or initiatively during release valve plug because of unscrewing excessive generation of pressing the security incident that flies to hurt sb.'s feelings.The utility model good sealing effect, the non-maintaining phase is long, is a kind of simple in structure, the stable and reliable operation safety exhaust.
Description of drawings
Fig. 1 is an existing technology exhaust structure schematic representation;
Fig. 2 is the utility model outlet valve cross-sectional schematic;
Among the figure: the 1-valve plug, the 2-sealing gasket, the 3-gas port, the 4-self-locking device, 5-valve plug spanner stretches into the hole, 6-lock screw, 7-working clearance.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, but never in any form the utility model is limited,, all belong to the protection domain of the utility model based on any change or the improvement that the utility model training centre is done.
Fig. 1 shows the structure of existing technology outlet valve, is sealed and matched through sealing gasket by valve opening and valve plug 1.Its valve plug is deviate from easily, has potential safety hazard.
Fig. 2 shows the structure of the utility model, comprises valve opening, valve plug 1 and self-locking device 4, and described valve opening front end and valve plug 1 are sealed and matched, rear end and self-locking device 4 drive fits.
Described self-locking device 4 is coaxial with valve plug 1, and with the valve seat secure fit.
Described self-locking device 4 and valve seat countersunk head formula screw thread secure fit.
Described self-locking device 4 prevents that through lock screw 6 and valve seat secure fit self-locking device from losing self-locking action because of the oil hydraulic cylinder vibrations get loose voluntarily.
Described self-locking device 4 stretches into hole 5 for the centre is provided with the valve plug spanner.
Described self-locking device 4 is a countersunk head formula structure, and assembling back outer rim is concordant with valve seat or be not higher than valve base surface.
Working clearance 7 between described self-locking device 4 and the valve plug 1 is less than the length of the effective active section of valve plug 1 screw thread.
The conehead of described valve plug 1 cooperates with the conical surface seal of valve opening.
Working principle of the utility model and working procedure:
The utility model adopts taper self sealing structure, fitting tight part in addition.And valve plug 1 unscrews and withdraws from the stroke rear end self-locking device 4 is set, and directly stops valve plug 1 to get loose to withdraw from and extruded by pressurized gas, flies to wound the generation of people's accident.
During the oil hydraulic cylinder proper functioning, valve plug 1 is in locking state, when the needs release, special spanner is stretched into hole 5 from the valve plug spanner put in, and unscrews valve plug 1, revolves when moving back work distance to maximum and is blocked by self-locking device 4, and valve plug 1 can't withdraw from fully.Equally, even valve plug 1 can not extruded by pressurized gas because of the work vibrations get loose yet, fly to wound the people.After release was accomplished, the valve plug 1 of screwing once more got final product.
Claims (8)
1. the safety exhaust with auto-lock function comprises valve opening, valve plug (1) and self-locking device (4), it is characterized in that: described valve opening front end and valve plug (1) are sealed and matched, rear end and self-locking device (4) drive fit.
2. the safety exhaust with auto-lock function according to claim 1 is characterized in that: described self-locking device (4) is coaxial with valve plug (1), and with the valve seat secure fit.
3. the safety exhaust with auto-lock function according to claim 1 and 2 is characterized in that: described self-locking device (4) and valve seat countersunk head formula screw thread secure fit.
4. the safety exhaust with auto-lock function according to claim 1 and 2 is characterized in that: described self-locking device (4) prevents that through lock screw (6) and valve seat secure fit self-locking device from losing self-locking action because of the oil hydraulic cylinder vibrations get loose voluntarily.
5. the safety exhaust with auto-lock function according to claim 1 and 2 is characterized in that: described self-locking device (4) stretches into hole (5) for the centre is provided with the valve plug spanner.
6. the safety exhaust with auto-lock function according to claim 1 and 2 is characterized in that: described self-locking device (4) is a countersunk head formula structure, and assembling back outer rim is concordant with valve seat or be not higher than valve base surface.
7. the safety exhaust with auto-lock function according to claim 1 and 2 is characterized in that: the working clearance (7) between described self-locking device (4) and the valve plug (1) is less than the length of the effective active section of valve plug (1) screw thread.
8. the safety exhaust with auto-lock function according to claim 1 is characterized in that: the conehead of described valve plug (1) cooperates with the conical surface seal of valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204558964U CN202360490U (en) | 2011-11-17 | 2011-11-17 | Safety exhaust valve with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204558964U CN202360490U (en) | 2011-11-17 | 2011-11-17 | Safety exhaust valve with self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360490U true CN202360490U (en) | 2012-08-01 |
Family
ID=46571679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204558964U Expired - Fee Related CN202360490U (en) | 2011-11-17 | 2011-11-17 | Safety exhaust valve with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317782A (en) * | 2015-11-20 | 2016-02-10 | 常州海宏液压设备有限公司 | Jacking hydraulic oil cylinder with automatic exhausting and vessel dredging functions |
-
2011
- 2011-11-17 CN CN2011204558964U patent/CN202360490U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317782A (en) * | 2015-11-20 | 2016-02-10 | 常州海宏液压设备有限公司 | Jacking hydraulic oil cylinder with automatic exhausting and vessel dredging functions |
| CN105317782B (en) * | 2015-11-20 | 2017-03-29 | 常州海宏液压设备有限公司 | Automatic aerofluxuss dredging vessel jack-up hydraulic ram |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20181117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |