CN203395312U - Double-sealed self-closing cylinder valve - Google Patents
Double-sealed self-closing cylinder valve Download PDFInfo
- Publication number
- CN203395312U CN203395312U CN201320443652.3U CN201320443652U CN203395312U CN 203395312 U CN203395312 U CN 203395312U CN 201320443652 U CN201320443652 U CN 201320443652U CN 203395312 U CN203395312 U CN 203395312U
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- Prior art keywords
- valve
- sealing ring
- valve rod
- convex shoulder
- spring
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Abstract
A double-sealed self-closing cylinder valve comprises a valve body. The valve body is provided with a valve cavity, a pressure-relief opening communicated with the valve cavity is formed in the lateral side of the valve body, a pressure relief device is arranged in the pressure-relief opening, and an upper sealing-ring table and a lower sealing-ring table are arranged in the valve cavity. The valve cavity is internally further provided with an upper valve rod and a lower valve rod which is right opposite to the upper valve rod. An upper sealing ring arranged under the upper sealing-ring table is arranged on the upper valve rod, and a lower sealing ring arranged under the lower sealing-ring table is arranged on the lower valve rod. The double-sealed self-closing cylinder valve which is double-sealed is good in sealing performance, so that security is guaranteed well.
Description
Technical field
The utility model relates to a kind of self-closing cylinder valve.
Background technique
Self-closing cylinder valve is applicable to LP gas cylinder.The structure of existing self-closing cylinder valve is generally single track sealing structure, once spring failure, sealing gasket are aging, foreign matter enters, its sealability exists certain hidden danger.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing self-closing cylinder valve, the utility model provides that a kind of sealability is better, the better double-sealing self-closing of Security cylinder valve.
The technical scheme in the invention for solving the technical problem is: a kind of double-sealing self-closing cylinder valve, comprise valve body, described valve body has the valve pocket of longitudinal perforation, the side of described valve body is provided with the pressure relief opening with described valve pocket UNICOM, in described pressure relief opening, be provided with pressure relief device, in described valve pocket, be provided with upper sealing ring platform and lower sealing ring platform;
In described valve pocket, be also provided with upper valve rod and over against the lower valve rod of described upper valve rod;
Described upper valve rod is provided with upper sealing ring, in described valve body, be also provided with the upper bracket of hollow out, on described upper valve rod, cover has upper spring, the upper end of described upper spring is connected with described upper valve rod, thus the lower end of described upper spring be connected upper spring with described upper bracket can be by upper sealing ring top tight sealing at described upper sealing ring platform place;
Described lower valve rod is provided with lower sealing ring, in described valve body, be also provided with the lower support frame of hollow out, on described lower valve rod, cover has lower spring, the upper end of described lower spring is connected with described lower valve rod, thus the lower end of described lower spring be connected lower spring with described lower support frame can be by lower sealing ring top tight sealing at described lower sealing ring platform place.
Further, described pressure relief device comprise be located at described pressure relief opening rear end back poppet, sliding establish with described pressure relief opening in pressure release support, the front end of described pressure release support is provided with pressure release sealing gasket, thereby be provided with pressure release spring between described pressure release support and described back poppet, described pressure release sealing gasket can be sealed in to the connection position of described valve pocket and pressure relief opening.
Further, described upper sealing ring platform is the bulge loop of the oblique downward-extension of valve pocket internal face; Described lower sealing ring platform comprises a sealed support, and described sealed support is threadedly connected in described valve pocket, and described sealed support has the ring-type platform to downward-extension.
The utility model also has following additional technical feature: described upper valve rod is provided with the first convex shoulder and is positioned at the second convex shoulder of described the first convex shoulder below, described upper sealing ring is sandwiched between described the first convex shoulder and the second convex shoulder, and described upper spring withstands between described the second convex shoulder and upper bracket;
Described lower valve rod is provided with the 3rd convex shoulder and is positioned at the 4th convex shoulder of described the 3rd convex shoulder below, and described lower sealing ring is sandwiched between described the 3rd convex shoulder and the 4th convex shoulder, and described lower spring withstands between the lower end and lower support frame of described lower valve rod.
Described upper bracket is connected on described sealed support.
Under usual condition, valve pocket is in sealing state: under the effect at upper spring, upper sealing ring is sealed in upper sealing ring platform place; Under the effect of lower spring, lower sealing ring is sealed in lower sealing ring platform place.
When air inlet, upper valve rod is pressed down, make upper sealing ring no longer be sealed in upper sealing ring platform place; Continue to press down upper valve rod lower valve rod be also pressed down, make lower sealing ring no longer be sealed in lower sealing ring platform place.So can pass through the smooth air inlet of valve pocket.
When valve pocket internal air pressure is too high, can pass through pressure relief opening pressure release.
The beneficial effects of the utility model are: have two seals, sealability is better, and Security is more secure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
With reference to Fig. 1, a kind of double-sealing self-closing cylinder valve, comprises valve body 1, and described valve body 1 has the valve pocket 7 of longitudinal perforation, and the side of described valve body is provided with the pressure relief opening 2 with described valve pocket UNICOM, in described pressure relief opening 2, is provided with pressure relief device.In the present embodiment, described pressure relief device comprise be located at described pressure relief opening 2 rear ends back poppet 3, sliding establish with described pressure relief opening 2 in pressure release support 4, the front end of described pressure release support 4 is provided with pressure release sealing gasket 5, thereby be provided with pressure release spring 6 between described pressure release support 4 and described back poppet 3, described pressure release sealing gasket can be sealed in to the connection position of described valve pocket and pressure relief opening 2.When air pressure in valve pocket 7 is too high, air pressure by pressure release sealing gasket 5 and pressure release support 4 to pusher, thereby no longer seal up pressure relief opening, realize pressure release.
In described valve pocket 7, be provided with upper sealing ring platform 13 and lower sealing ring platform; In described valve pocket 7, be also provided with upper valve rod 8 and over against the lower valve rod 9 of described upper valve rod 8.
Described upper valve rod 8 is provided with the upper sealing ring 10 that is positioned at described upper sealing ring platform below, in described valve body, be also provided with the upper bracket 11 of hollow out, on described upper valve rod 8, cover has upper spring 12, described upper spring 12 upper end is connected with described upper valve rod 8, thus described upper spring 12 lower end be connected upper spring 12 with described upper bracket 11 can be by upper sealing ring 10 top tight sealings at described upper sealing ring platform 13 places.In the present embodiment, the specific constructive form of upper sealing ring platform 13 is the bulge loop of the oblique downward-extension of a valve pocket internal face.In the present embodiment, described upper valve rod 8 is provided with the first convex shoulder 14 and is positioned at the second convex shoulder 15 of described the first convex shoulder below, described upper sealing ring 10 is sandwiched between described the first convex shoulder 14 and the second convex shoulder 15, and described upper spring 12 withstands between described the second convex shoulder 15 and upper bracket 11.
Described lower valve rod 9 is provided with the lower sealing ring 16 that is positioned at described lower sealing ring platform below, in described valve body, be also provided with the lower support frame 17 of hollow out, on described lower valve rod 9, cover has lower spring 18, described lower spring 18 upper end is connected with described lower valve rod 9, thus described lower spring 18 lower end be connected lower spring 18 with described lower support frame 17 can be by lower sealing ring 16 top tight sealings at described lower sealing ring platform place.In the present embodiment, the specific constructive form of lower seal bulge loop is: lower sealing ring platform comprises a sealed support 19, described sealed support 19 is threadedly connected in described valve pocket, described sealed support 19 has the ring-type platform 22 to downward-extension, and lower sealing ring 16 is salable at these ring-type platform 22 places by lower spring.Described upper bracket 11 is connected on described sealed support 19.In the present embodiment, described lower valve rod is provided with the 3rd convex shoulder 20 and is positioned at the 4th convex shoulder 21 of described the 3rd convex shoulder below, described lower sealing ring 16 is sandwiched between described the 3rd convex shoulder 20 and the 4th convex shoulder 21, and described lower spring 18 withstands between the lower end and lower support frame 17 of described lower valve rod 9.
Under usual condition, valve pocket is in sealing state: under the effect of upper spring 12, upper sealing ring 10 is sealed in upper sealing ring platform 13 places; Under the effect of lower spring 18, lower sealing ring 16 is sealed in lower sealing ring platform place.
When air inlet, upper valve rod 8 is pressed down, make upper sealing ring 10 no longer be sealed in upper sealing ring platform place; Continue to press down 8 lower valve rods 9 of upper valve rod and be also pressed down, make lower sealing ring 16 no longer be sealed in lower sealing ring platform place.So can pass through the smooth air inlet of valve pocket 7.
Claims (5)
1. a double-sealing self-closing cylinder valve, comprise valve body, described valve body has the valve pocket of longitudinal perforation, the side of described valve body is provided with the pressure relief opening with described valve pocket UNICOM, in described pressure relief opening, be provided with pressure relief device, it is characterized in that: in described valve pocket, be provided with upper sealing ring platform and lower sealing ring platform;
In described valve pocket, be also provided with upper valve rod and over against the lower valve rod of described upper valve rod;
Described upper valve rod is provided with the upper sealing ring that is positioned at described upper sealing ring platform below, in described valve body, be also provided with the upper bracket of hollow out, on described upper valve rod, cover has upper spring, the upper end of described upper spring is connected with described upper valve rod, thus the lower end of described upper spring be connected upper spring with described upper bracket can be by upper sealing ring top tight sealing at described upper sealing ring platform place;
Described lower valve rod is provided with the lower sealing ring that is positioned at described lower sealing ring platform below, in described valve body, be also provided with the lower support frame of hollow out, on described lower valve rod, cover has lower spring, the upper end of described lower spring is connected with described lower valve rod, thus the lower end of described lower spring be connected lower spring with described lower support frame can be by lower sealing ring top tight sealing at described lower sealing ring platform place.
2. double-sealing self-closing cylinder valve as claimed in claim 1, it is characterized in that: described pressure relief device comprise be located at described pressure relief opening rear end back poppet, sliding establish with described pressure relief opening in pressure release support, the front end of described pressure release support is provided with pressure release sealing gasket, thereby be provided with pressure release spring between described pressure release support and described back poppet, described pressure release sealing gasket can be sealed in to the connection position of described valve pocket and pressure relief opening.
3. double-sealing self-closing cylinder valve as claimed in claim 1 or 2, is characterized in that: described upper sealing ring platform is the bulge loop of the oblique downward-extension of valve pocket internal face;
Described lower sealing ring platform comprises a sealed support, and described sealed support is threadedly connected in described valve pocket, and described sealed support has the ring-type platform to downward-extension.
4. double-sealing self-closing cylinder valve as claimed in claim 1 or 2, it is characterized in that: described upper valve rod is provided with the first convex shoulder and is positioned at the second convex shoulder of described the first convex shoulder below, described upper sealing ring is sandwiched between described the first convex shoulder and the second convex shoulder, and described upper spring withstands between described the second convex shoulder and upper bracket;
Described lower valve rod is provided with the 3rd convex shoulder and is positioned at the 4th convex shoulder of described the 3rd convex shoulder below, and described lower sealing ring is sandwiched between described the 3rd convex shoulder and the 4th convex shoulder, and described lower spring withstands between the lower end and lower support frame of described lower valve rod.
5. double-sealing self-closing cylinder valve as claimed in claim 3, is characterized in that: described upper bracket is connected on described sealed support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320443652.3U CN203395312U (en) | 2013-07-25 | 2013-07-25 | Double-sealed self-closing cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320443652.3U CN203395312U (en) | 2013-07-25 | 2013-07-25 | Double-sealed self-closing cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395312U true CN203395312U (en) | 2014-01-15 |
Family
ID=49906845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320443652.3U Expired - Lifetime CN203395312U (en) | 2013-07-25 | 2013-07-25 | Double-sealed self-closing cylinder valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836242A (en) * | 2014-03-21 | 2014-06-04 | 宁波金佳佳阀门有限公司 | Fuel gas cylinder valve |
| CN111828836A (en) * | 2020-07-22 | 2020-10-27 | 宁波麦实科技有限公司 | Anti-disassembly liquefied petroleum gas cylinder valve |
-
2013
- 2013-07-25 CN CN201320443652.3U patent/CN203395312U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836242A (en) * | 2014-03-21 | 2014-06-04 | 宁波金佳佳阀门有限公司 | Fuel gas cylinder valve |
| CN103836242B (en) * | 2014-03-21 | 2016-06-29 | 宁波金佳佳阀门有限公司 | A kind of gas cylinder valve |
| CN111828836A (en) * | 2020-07-22 | 2020-10-27 | 宁波麦实科技有限公司 | Anti-disassembly liquefied petroleum gas cylinder valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
|
| CX01 | Expiry of patent term |