CN202510782U - Double safety valve - Google Patents
Double safety valve Download PDFInfo
- Publication number
- CN202510782U CN202510782U CN2012201440058U CN201220144005U CN202510782U CN 202510782 U CN202510782 U CN 202510782U CN 2012201440058 U CN2012201440058 U CN 2012201440058U CN 201220144005 U CN201220144005 U CN 201220144005U CN 202510782 U CN202510782 U CN 202510782U
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- CN
- China
- Prior art keywords
- valve
- valve body
- expansion sleeve
- double safety
- valve core
- 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.)
- Expired - Fee Related
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- Safety Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a double safety valve. The double safety valve comprises a turncap, a rebound safety spring, a hexagonal nut, a fixed sheet, a nut, a pressure spring, a valve core sleeve, a valve core, a valve body, a copper washer and an O-shaped sealing ring which are sequentially sleeved together, wherein an air inlet hole is formed in the valve body; and a rubber sealing expansion sleeve is arranged between the valve core and the valve body. Compared with the prior art, the double safety valve has the advantages that the rubber sealing expansion sleeve is arranged between the valve core and the valve body, is made of silica gel materials, and is corrugated and elastic. The double safety valve mainly solves the problems that: 1, after steam is generated, the pressure makes the sealing expansion sleeve in the valve body stretched to ensure that the valve core pushes upwards, and the sealing expansion sleeve has high elasticity and automatically rebounds under the condition that the atmospheric pressure does not exist; and 2, the sealing expansion sleeve prevents parts in the valve body from being directly contacted with the steam so as to prevent the friction from being generated among moving components after limescale is generated on the parts, and the valve core does not rebound under the condition that atmospheric pressure does not exist.
Description
Technical field
The utility model relates to valve field, relates in particular to a kind of double safety valve.
Background technique
At boiler or container that steam produces and the place that needs row pressure power are arranged, all need safety valve to come pressure release.Some safety valves are after long-term work at present; A valve part of product the inside is through after the long-time steam pressurized; Expansion also can produce some incrustation scales, causes rubbing between the inside and outside wall of moving element and increases the weight of, and movable body can not well move back and forth; May be stuck, operator and peripheral personnel are produced potential safety hazard.
The model utility content
For solving the problems of the technologies described above, the purpose of the utility model provide a kind of stretchability good, can not produce incrustation scale, the double safety valve that frictional force reduces.
The double safety valve of the utility model; Comprise the turncap, resilience safety spring, hexagonal nuts, fixed plate, nut, pressure spring, valve core housing, spool, valve body, copper washer, the O RunddichtringO that connect together successively; Its innovative point is: said valve body is provided with inlet hole, between spool and valve body, is provided with the rubber seal telescopic cover.
Compared with prior art, this novel rubber seal telescopic cover that between spool and valve body, is provided with, the rubber seal telescopic cover is made up of the material of silica type, and ripple, flexible is arranged.The utility model has mainly solved following two problems: 1. after steam produced, pressure made the sealing telescopic cover stretching, extension of valve body the inside that spool is up pushed away, and stretchability is good, is not having resilience automatically under the situation of air pressure.2. component directly contacted with steam inside the sealing telescopic cover had been isolated valve body, had avoided making moving element produce frictional force, spool not resilience under the situation that does not receive air pressure behind the component generation incrustation scale.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION figure of the utility model double safety valve.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
As shown in Figure 1; A kind of double safety valve; Comprise the turncap 1, resilience safety spring 2, hexagonal nuts 3, fixed plate 4, nut 5, pressure spring 6, valve core housing 7, spool 8, valve body 10, copper washer 11, the O RunddichtringO 12 that connect together successively; Its innovative point is: valve body 10 is provided with inlet hole 13, between spool 8 and valve body 10, is provided with rubber seal telescopic cover 9.
The working principle of the utility model double safety valve is following:
After steam gets into valve body 14 through inlet hole 13; Rubber seal telescopic cover 9 receives vapor pressure stretch to promote spool 8, and behind the gravity of vapor pressure greater than the pressure of spring 2 and spool 8, and just the spool of promotion motion earlier integral body is up moved and made hexagonal nuts 3 move upward to separate with valve body 10 upper surfaces; When rotation turncap 1, just revolve like this for sky; Can't drive valve body 10 and rotate simultaneously, promptly play and just can't rotate out valve body 10 when slightly steam being arranged, play safety effect.
When vapor pressure in the valve body surpassed setting pressure, spool 8 can not up move again, and the elastic force that the seal ring of steam promotion at this moment, valve core housing 7 overcome pressure spring 6 moves upward, and made steam discharge releasing pressure automatically from the hole of valve body both sides.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and modification, these improvement and modification also should be regarded as the protection domain of the utility model.
Claims (1)
1. double safety valve; Comprise the turncap, resilience safety spring, hexagonal nuts, fixed plate, nut, pressure spring, valve core housing, spool, valve body, copper washer, the O RunddichtringO that connect together successively; It is characterized in that: said valve body is provided with inlet hole, between said spool and valve body, is provided with the rubber seal telescopic cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201440058U CN202510782U (en) | 2012-04-09 | 2012-04-09 | Double safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201440058U CN202510782U (en) | 2012-04-09 | 2012-04-09 | Double safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510782U true CN202510782U (en) | 2012-10-31 |
Family
ID=47063269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201440058U Expired - Fee Related CN202510782U (en) | 2012-04-09 | 2012-04-09 | Double safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510782U (en) |
-
2012
- 2012-04-09 CN CN2012201440058U patent/CN202510782U/en not_active Expired - Fee Related
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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: 20121031 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |