CN202834168U - Fireproof ball valve - Google Patents
Fireproof ball valve Download PDFInfo
- Publication number
- CN202834168U CN202834168U CN 201220557819 CN201220557819U CN202834168U CN 202834168 U CN202834168 U CN 202834168U CN 201220557819 CN201220557819 CN 201220557819 CN 201220557819 U CN201220557819 U CN 201220557819U CN 202834168 U CN202834168 U CN 202834168U
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- valve
- ball
- ball core
- seat
- face
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- Expired - Fee Related
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Abstract
The utility model discloses a fireproof ball valve which comprises a valve body, a valve rod and a ball core. A valve seat is arranged in the valve body. One end of the valve rod penetrates through the valve body and is fixedly connected with the ball core. An actuating mechanism is arranged at the other end of the valve rod. The fireproof ball valve is characterized in that a soft sealing part and a hard sealing part are arranged on the valve seat, the soft sealing part and the hard sealing part are respectively provided with a sealing face which is connected with the ball core in a sealing mode, the soft sealing part is located on the end face, toward the ball core, of the valve seat, the hard sealing part is located on the end face, deviating from the ball core, of the valve seat, and an elastic mechanism is arranged on the valve seat. The elastic mechanism can press the hard sealing part and the ball core and sealing connection is formed. The fireproof ball valve has a well fireproof and discharge-resistant function.
Description
Technical field
The utility model relates to a kind of ball valve, especially a kind of fire-proof ball valve.
Background technique
Ball valve is widely used in using as the control switch in the conveyance conduit in the industries such as oil, rock gas, chemical industry.Traditional ball valve comprises valve body, valve rod and ball core, and valve rod one end passes valve body and is fixedly connected with the ball core, the other end of valve rod is provided with actuator, be provided with valve seat in the valve body, the ball core is between two valve seats, and the valve seat of ball valve adopts plastic material usually, although this material good corrosion resistance, easily melt but meet high temperature, in case fire occurs, the valve seat easy firing melts, thereby so that medium will have the gap between valve body and the ball core to flow out, the anti-function of letting out of forfeiture.When if this medium is chemical agent or flammable and explosive substance, the liquid that leaks can cause serious murder by poisoning, pollution even fire.
The model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of and can effectively prevent fires, the anti-fire-proof ball valve of letting out.
To achieve these goals, the technical solution adopted in the utility model is: a kind of fire-proof ball valve, comprise valve body, valve rod and ball core, be provided with valve seat in the valve body, valve rod one end passes valve body and is fixedly connected with the ball core, the other end of valve rod is provided with actuator, it is characterized in that: described valve seat is provided with soft seal and hard Sealing, described soft seal and hard Sealing are equipped with the sealing surface that is tightly connected with the ball core, described soft seal is positioned at valve seat towards the end face of ball core, described hard Sealing is positioned at the end face that valve seat deviates from the ball core, and valve seat is provided with and can pushes hard Sealing and ball core and form the elastic mechanism that is tightly connected.
As further setting of the present utility model, the edge circle of described soft seal for being made by teflon, valve seat offers annular groove towards the end face of ball core, described edge circle is embedded in annular groove, the length of described edge circle cross section is greater than the degree of depth of annular groove, and the edge circle has the arc shaped surface that cooperates with the ball wicking surface towards the end face of ball core.
As further setting of the present utility model, described hard Sealing is metal o-ring.
As further setting of the present utility model, described elastic mechanism comprises spring seat, spring seat is positioned at the end face that valve seat deviates from the ball core, described metal o-ring is set in spring seat towards the end face of valve seat, the other end of spring seat is provided with and compresses spring, compress spring one end and compressing spring seat, compress the spring the other end and compressing valve body.
As further setting of the present utility model, described spring seat is provided with step towards the end face of valve seat, and described metal o-ring is positioned on the step.
Adopt such scheme, under the normal working state of ball valve, ball valve is tightly connected by soft seal and ball core, when ball valve runs into fire, and the soft seal in the valve seat melts not because of heat resistance or burn after, compressing spring and can push static seal between spring seat and valve body is adjacent to the sealing surface of hard Sealing and ball core, thereby stop the leakage of valve body medium, avoided the intensity of a fire to result in greater loss because flowing medium leaks and injure.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Accompanying drawing 1 is the utility model specific embodiment structural representation.
Embodiment
Specific embodiment of the utility model fire-proof ball valve as shown in Figure 1, comprise valve body 1, valve rod 2 and ball core 3, be provided with valve seat 4 in the valve body 1, valve rod 2 one ends pass valve body 1 and are fixedly connected with ball core 3, the other end of valve rod 2 is provided with actuator 5, valve seat 4 is provided with soft seal and hard Sealing, soft seal and hard Sealing are equipped with the sealing surface that is tightly connected with ball core 3, soft seal is positioned at valve seat 4 towards the end face of ball core 3, hard Sealing is positioned at the end face that valve seat 4 deviates from ball core 3, and valve seat 4 is provided with and can pushes the elastic mechanism that hard Sealing and 3 formation of ball core are tightly connected.
The edge circle 41 of above-mentioned soft seal for being made by teflon, valve seat 4 offers annular groove towards the end face of ball core 3, edge circle 41 is embedded in annular groove, the length of edge circle 41 cross sections is greater than the degree of depth of annular groove, and edge circle 41 end faces towards ball core 3 have the arc shaped surface with ball core 3 surface engagement.
Above-mentioned hard Sealing is metal o-ring 42.
Above-mentioned elastic mechanism comprises spring seat 431, spring seat 431 is positioned at the end face that valve seat 4 deviates from ball core 3, metal o-ring 42 is set in spring seat 431 towards the end face of valve seat 4, the other end of spring seat 431 is provided with and compresses spring 432, compress spring 432 1 ends and compressing spring seat 431, compress spring 432 the other ends and compressing valve body 1.
Above-mentioned spring seat 431 is provided with step towards the end face of valve seat 4, and metal o-ring 42 is positioned on the step.
Adopt such scheme, under the normal working state of ball valve, ball valve is tightly connected by soft seal and ball core, when ball valve runs into fire, and the soft seal in the valve seat 4 melts not because of heat resistance or burn after, compressing spring 432 and can push hard Sealing between spring seat 431 and valve body 1, sealing surface and the ball core 3 of hard Sealing are adjacent to, thereby stop the leakage of valve body 1 medium, play fireproofing function, thereby avoided the intensity of a fire result in greater loss because flowing medium leaks and injure.
Claims (5)
1. fire-proof ball valve, comprise valve body, valve rod and ball core, be provided with valve seat in the valve body, valve rod one end passes valve body and is fixedly connected with the ball core, the other end of valve rod is provided with actuator, it is characterized in that: described valve seat is provided with soft seal and hard Sealing, described soft seal and hard Sealing are equipped with the sealing surface that is tightly connected with the ball core, described soft seal is positioned at valve seat towards the end face of ball core, described hard Sealing is positioned at the end face that valve seat deviates from the ball core, and valve seat is provided with and can pushes hard Sealing and ball core and form the elastic mechanism that is tightly connected.
2. fire-proof ball valve according to claim 1, it is characterized in that: the edge circle of described soft seal for being made by teflon, valve seat offers annular groove towards the end face of ball core, described edge circle is embedded in annular groove, the length of described edge circle cross section is greater than the degree of depth of annular groove, and the edge circle has the arc shaped surface that cooperates with the ball wicking surface towards the end face of ball core.
3. fire-proof ball valve according to claim 1 and 2, it is characterized in that: described hard Sealing is metal o-ring.
4. fire-proof ball valve according to claim 3, it is characterized in that: described elastic mechanism comprises spring seat, spring seat is positioned at the end face that valve seat deviates from the ball core, described metal o-ring is set in spring seat towards the end face of valve seat, the other end of spring seat is provided with and compresses spring, compress spring one end and compressing spring seat, compress the spring the other end and compressing valve body.
5. fire-proof ball valve according to claim 4, it is characterized in that: described spring seat is provided with step towards the end face of valve seat, and described metal o-ring is positioned on the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220557819 CN202834168U (en) | 2012-10-26 | 2012-10-26 | Fireproof ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220557819 CN202834168U (en) | 2012-10-26 | 2012-10-26 | Fireproof ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834168U true CN202834168U (en) | 2013-03-27 |
Family
ID=47945877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220557819 Expired - Fee Related CN202834168U (en) | 2012-10-26 | 2012-10-26 | Fireproof ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202834168U (en) |
-
2012
- 2012-10-26 CN CN 201220557819 patent/CN202834168U/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: 20130327 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |