CN2326798Y - High-low-pressure self-closing safety valve - Google Patents
High-low-pressure self-closing safety valve Download PDFInfo
- Publication number
- CN2326798Y CN2326798Y CN 98232540 CN98232540U CN2326798Y CN 2326798 Y CN2326798 Y CN 2326798Y CN 98232540 CN98232540 CN 98232540 CN 98232540 U CN98232540 U CN 98232540U CN 2326798 Y CN2326798 Y CN 2326798Y
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- valve
- pressure
- low
- self
- safety valve
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- Expired - Fee Related
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Abstract
The utility model relates to a high-low-pressure self-closing safety valve. A valve cover 3 is provided with a self-locking mechanism composed of a spanner (6), a clamping pin 7, and a spring 8; a valve rod is provided with high-low-pressure locking grooves 9, 4; a sealing pad 15 on the lower end of the valve rod is matched with an air inlet 16, and one end of a valve arm 9 is matched with an air outlet 10. When air supply pressure is greater than or is smaller than the rated pressure, the high-low-pressure self-closing safety valve can realize automatic closing, and accordingly, safety requirements can be satisfied.
Description
The utility model relates to the self-closing safety valve of installing and using in a kind of pipeline gas system of high low pressure.
For the user who uses pipeline gas, the structural design of safety valve is directly connected to user's normal use and safety personal, property.If inconsiderate, then can bring the inconvenience in the use even the loss of lives and properties to the user.Also some valve can not be closed when supply gas pressure surpasses or is lower than rated pressure voluntarily, and causes gas appliance to damage or leak air, and goes back the entail dangers to personal safety and safety of property when serious.
The purpose of this utility model is exactly to overcome the deficiency of being mentioned in the above-mentioned background technology, and designs a kind of safety valve that can both close automatically when surpassing or being lower than rated pressure.
Above-mentioned purpose is achieved by the following technical solution:
The self-closing safety valve of this high low pressure is fixed an epithelium between valve gap and valve body, valve gap is provided with the self-locking mechanism that is made of spanner, bayonet lock and spring, and the top of valve rod is provided with the locked groove of high and low pressure, and the sealing gasket that the lower end has matches with suction port; One end of valve arm inserts stem lower portion, and the sealing gasket that the other end has matches with the air outlet.The valve arm is movably connected in the valve body by bearing pin.Between valve gap and epithelium, be equipped with a spring.Bayonet lock is stirred by spanner.
Accompanying drawing is a structural representation of the present utility model.
As shown in drawings, this safety valve mainly is to be made of valve body 1, valve gap 3, epithelium 2, suction port 16, air outlet 14, valve rod 17, spring 10, spanner 5, bayonet lock 6, spring 7, valve arm 11, sealing gasket 13,15.Wherein, epithelium 2 is crimped on the junction of valve gap 3 and valve body 1, and valve rod 17 passes epithelium 2 and stretches out valve gap 3 tops, and epithelium 2 is fixedlyed connected with valve rod 17.The self-locking device that is made of spanner 5, bayonet lock 6 and spring 7 is positioned at valve gap 3 tops.The activity of bayonet lock 6 is stirred by spring 7 power and spanner 5, and bayonet lock 6 can snap in locked groove 4 of the low pressure that is positioned on the valve rod 17 and the locked groove 9 of high pressure, to play the function of lock-bit.One spring 10 is installed between valve gap 3 and epithelium 2.Fix a sealing gasket 15 in valve rod 17 lower ends, the last plane of the lower plane of sealing pad 15 and suction port 16 adapts, and its diameter should be greater than the diameter of suction port 16.In valve body 1, flexibly connect a valve arm 11 according to the lever principle design by bearing pin 12, the movable bottom of inserting valve rod 17 of an end of this valve arm 11, its other end is provided with a sealing gasket 13 that matches with air outlet 14.Suction port 16 place's supply gas pressures are on the low pressure closing pressure time, the people is for pulling spanner 5, make bayonet lock 6 break away from the locked groove 4 of low pressure, the valve rod 17 that be connected as a single entity with the epithelium 2 this moment a bit of distance that moves upward, corresponding sealing gasket 15 in valve rod 17 bottoms leaves suction port 16 upper edges, and an end of valve arm 11 also rises a bit of around bearing pin 12 with valve rod 11, but sealing gasket 13 can't contact with air outlet 14, thereby make combustion gas enter inner chamber by suction port 16, after transport on the gas appliance by air outlet 14 again.Because supply gas pressure is slightly larger than the pressure of spring 10, so this valve can not cut out automatically and guarantees to use gas under normal supply gas pressure state.
When supply gas pressure was reduced to low pressure pass valve pressure, valve rod 17 and epithelium 2 were depressed by spring 10, thereby make sealing gasket 15 compress suction port 16 upper edges, just stop air feed.Simultaneously, bayonet lock 6 snaps under the pressure of spring 7 automatically realizes self-locking in the locked groove 4 of low pressure on the valve rod 17, the danger that leaks air in the time of can avoiding flame-out back supply gas pressure to recover.
And when supply gas pressure returns to rated pressure again, though epithelium 2 by last top, supply gas pressure can not overcome the clamping stagnation power sum of the pressure and the bayonet lock 6 of spring 10, so suction port 16 is still closed reliably.Have only as the people and just can open suction port 16 when spanner 5 is removed self-lockings, recover gas just commonly used for pulling.
When if supply gas pressure occurring and being higher than the situation of rated pressure; valve rod 117 continues to rise; and bayonet lock 6 is snapped in the locked groove 9 of high pressure; valve arm 11 under the drive of valve rod 17 around bearing pin 12 action and make sealing gasket 13 be pressed in air outlet 14; disconnect air supply channel, the protection gas appliance is not subjected to impacting with high pressure and damages.After pressure recovery was normal, the people can make bayonet lock 6 break away from the locked groove 9 of high pressure for depressing valve rod 17 tops, and valve arm 11 and sealing gasket 13 leave air outlet 14 and continue air feed.This has just satisfied this valve and has closed automatically and safe requirement under high pressure or low-pressure state.
The utility model has overcome the defective described in the background technique, and it is reasonable in design, simple in structure, can both automatic closing when supply gas pressure is greater than or less than rated pressure and stop air feed, really realize safe and reliable purpose.
Claims (4)
1. self-closing safety valve of high low pressure, between valve gap (3) and valve body (1), fix an epithelium (2), it is characterized in that valve gap (3) is provided with the self-locking mechanism that is made of spanner (5), kayser (6) and spring (7), the top of valve rod (17) is provided with the locked groove of high and low pressure (9,4), and the sealing gasket that the lower end has (15) matches with suction port (16); One end of valve arm (11) inserts valve rod (17) bottom, and the sealing gasket that the other end has (13) matches with air outlet (14).
2. safety valve as claimed in claim 1 is characterized in that valve arm (11) is movably connected in the valve body (1) by bearing pin (12).
3. safety valve as claimed in claim 1 is characterized in that being equipped with a spring (10) between valve gap (3) and epithelium (2).
4. safety valve as claimed in claim 1 is characterized in that bayonet lock (6) stirred by spanner (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232540 CN2326798Y (en) | 1998-03-16 | 1998-03-16 | High-low-pressure self-closing safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232540 CN2326798Y (en) | 1998-03-16 | 1998-03-16 | High-low-pressure self-closing safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2326798Y true CN2326798Y (en) | 1999-06-30 |
Family
ID=33981454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98232540 Expired - Fee Related CN2326798Y (en) | 1998-03-16 | 1998-03-16 | High-low-pressure self-closing safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2326798Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566179B (en) * | 2009-05-14 | 2011-03-23 | 李来友 | Hydraulic flow-limiting overpressure self-closing valve |
| CN102606775A (en) * | 2012-03-27 | 2012-07-25 | 山东大学 | Automatic safety valve |
-
1998
- 1998-03-16 CN CN 98232540 patent/CN2326798Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566179B (en) * | 2009-05-14 | 2011-03-23 | 李来友 | Hydraulic flow-limiting overpressure self-closing valve |
| CN102606775A (en) * | 2012-03-27 | 2012-07-25 | 山东大学 | Automatic safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |