CN212004424U - Automatic shutoff gas valve - Google Patents
Automatic shutoff gas valve Download PDFInfo
- Publication number
- CN212004424U CN212004424U CN202020629521.4U CN202020629521U CN212004424U CN 212004424 U CN212004424 U CN 212004424U CN 202020629521 U CN202020629521 U CN 202020629521U CN 212004424 U CN212004424 U CN 212004424U
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- ball
- chamber
- gas valve
- air inlet
- pressure regulating
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Abstract
The utility model relates to a gas valve technical field especially relates to an automatic gas valve that blocks. The ball valve comprises a main channel, a valve seat, a floating ball, a ball chamber, an elastic restoring piece, a pressure regulating channel, a fusible connector, a slow storage chamber and a restoring mechanism for restoring the floating ball, wherein the main channel, the ball chamber and the slow storage chamber are all arranged on the valve seat; the ball chamber is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the main channel, and the buffer chamber is arranged below the ball chamber and is communicated with the ball chamber; the pressure regulating channel is arranged on the first annular blocking part and is arranged in parallel with the air inlet, and the diameter of the pressure regulating channel is smaller than that of the air inlet; the diameter of the floating ball is larger than the caliber of the buffer chamber, and the floating ball is connected with the recovery mechanism through the elastic recovery piece; the nozzle is connected to the end of the main channel near the air outlet through a fusible connecting body. The utility model discloses an automatic gas valve that blocks, when the high temperature environment was in to the gas leakage or valve emergence downstream, the gas valve can block automatically.
Description
Technical Field
The utility model relates to a gas valve technical field especially relates to an automatic gas valve that blocks.
Background
The gas valve is widely applied as a device for controlling the on-off of gas, and is often used between a household gas pipeline and a gas stove connecting hose to control the on-off of gas. The general process of gas leakage, which is highly susceptible to fires and explosions, is generally that gas slowly leaking into a space reaches the ignition point and then starts to catch fire, after which the high temperature causes the connecting hose to melt or the gas valve to leak and then more gas to leak, and then an explosion or a more severe fire occurs. In order to solve this problem, it is necessary to provide an automatically blocking gas valve which can automatically block the gas valve after a downstream fire caused by gas leakage occurs.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas valve of automatic shutoff to prior art's not enough, when taking place the gas leakage or the valve is in high temperature environment at downstream, the gas valve can automatic shutoff.
In order to achieve the purpose, the utility model discloses an automatic interdiction gas valve, which comprises a main channel and a valve seat, and also comprises a floating ball, a ball chamber, an elastic restoring piece, a pressure regulating channel, a fusible connecting body, a connecting nozzle, a slow storage chamber and a restoring mechanism for restoring the floating ball, wherein the main channel, the ball chamber and the slow storage chamber are all arranged on the valve seat; the ball chamber is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the main channel, and the caliber of the air outlet is smaller than the diameter of the floating ball; an annular baffle part I and an annular baffle part II are arranged between the ball chamber and the main channel, and an air inlet and an air outlet are respectively arranged on the annular baffle part I and the annular baffle part II; the ball chamber and the buffer chamber are arranged between the first annular baffle part and the second annular baffle part; the slow storage chamber is arranged below the ball chamber and communicated with the ball chamber; the pressure regulating channel is arranged on the first annular blocking part and is arranged in parallel with the air inlet, and the diameter of the pressure regulating channel is smaller than that of the air inlet; the floating ball is movably arranged in the ball chamber, the diameter of the floating ball is larger than the caliber of the buffer chamber, and the floating ball is connected with the recovery mechanism through the elastic recovery piece; the nozzle is connected to the end of the main channel near the air outlet through a fusible connecting body.
Furthermore, the fusible connector is tubular, one end of the fusible connector is provided with a connecting thread connected with the valve seat, the other end of the fusible connector is provided with a hollow baffle ring part, the nozzle is provided with an annular connecting part and a connecting pipe part, the connecting pipe part is arranged through the hollow baffle ring part, and the annular connecting part is positioned between the hollow baffle ring part and the end face of the valve seat.
Furthermore, the open end of slow storage chamber is provided with the butt cambered surface that is used for with the floater contact, and the position that the butt cambered surface is close to the air inlet is provided with a breach, and when the floater butt was in the butt cambered surface, the air current accessible breach from the pressure regulating channel flow direction to slow storage chamber got into the ball room.
Furthermore, the pressure regulating channel is axially parallel to the air inlet.
Furthermore, the recovery mechanism comprises a support body connected with the valve seat, a pressing part and a spring for recovering the position of the pressing part, the pressing part is arranged on the support body in a reciprocating manner, two ends of the spring are respectively connected with the support body and the pressing part, and two ends of the elastic recovery part are respectively connected with the floating ball and the pressing part.
Further, the support body is in threaded connection with the valve seat.
Further, the elastic restoring member is a spring.
Furthermore, the diameter of the pressure regulating channel is 0.1-0.45 times of the diameter of the air inlet.
Furthermore, the fusible connector is made of plastic.
Further, the fusing temperature of the fusible connector is 150-500 ℃.
The utility model has the advantages that: the utility model discloses an automatic gas valve of shutoff, under the normal condition, elasticity resumes the piece and presses the floater in the open end of slow storage chamber, the air current can pass ball room and realize the route, take place the gas leakage or can fuse the connector and take place the back when floater low reaches, can lead to the air current through ball room in the twinkling of an eye to strengthen, make the air pressure who gets into slow storage chamber through the pressure regulating channel strengthen, make the effort of elasticity resumes the piece to the floater to overcome to the effort of floater to atmospheric pressure in slow storage chamber, make the floater come-up, under the effect of horizontal atmospheric pressure, the floater is pressed and is blockked up the air current process in the gas outlet, the realization is opened circuit. The utility model discloses an automatic gas valve that blocks, low reaches gas leak or high temperature fusing can melt the connector after, can block the gas route automatically, realize opening circuit.
Drawings
Fig. 1 is a schematic view of the partial cross-sectional structure of the present invention.
Fig. 2 is a schematic view of the structure of the present invention viewed from the right.
Fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.
Fig. 4 is a schematic view of the local three-dimensional decomposition structure of the present invention.
The reference numerals include:
1-valve seat
11-annular first retaining part 12-annular second retaining part
2-main channel 3-floating ball
4-ball chamber 41-air inlet 42-air outlet
5-elastic restoring piece 6-pressure regulating channel
7-buffer reservoir 71-gap
8-recovery mechanism 81-supporting tube 82-pressing cap
9-fusible link 91-hollow collar portion.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the gas valve of the present invention comprises a main channel 2 and a valve seat 1, and further comprises a floating ball 3, a ball chamber 4, an elastic restoring member 5, a pressure regulating channel 6, a fusible connecting body 9, a nozzle, a slow storage chamber 7, and a restoring mechanism 8 for restoring the floating ball 3, wherein the main channel 2, the ball chamber 4, and the slow storage chamber 7 are all disposed on the valve seat 1; the ball chamber 4 is provided with an air inlet 41 and an air outlet 42, the air inlet 41 and the air outlet 42 are communicated with the main channel 2, and the caliber of the air outlet 42 is smaller than the diameter of the floating ball 3; an annular baffle part I11 and an annular baffle part II 12 are arranged between the ball chamber 4 and the main channel 2, and the air inlet 41 and the air outlet 42 are respectively arranged on the annular baffle part I11 and the annular baffle part II 12; the ball chamber 4 and the buffer chamber 7 are arranged between the first annular baffle part 11 and the second annular baffle part 12; the slow storage chamber 7 is arranged below the ball chamber 4 and is communicated with the ball chamber 4; the pressure regulating channel 6 is arranged on the first annular blocking part 11 and is arranged in parallel with the air inlet 41, and the diameter of the pressure regulating channel 6 is smaller than that of the air inlet 41; the floating ball 3 is movably arranged in the ball chamber 4, the diameter of the floating ball 3 is larger than the caliber of the buffer chamber 7, and the floating ball 3 is connected with the recovery mechanism 8 through the elastic recovery piece 5; the nozzle is connected to the end of the main channel 2 adjacent the air outlet 42 by a fusible link 9. The utility model discloses an automatic gas valve of interdiction, under the normal condition, elasticity resumes 5 and presses floater 3 in the open end of slow storage chamber 7, the air current can pass ball chamber 4 and realize the route, take place the gas leakage or can fuse the connector 9 and take place the back of fusing when floater 3 downstream, can lead to in the twinkling of an eye the air current through ball chamber 4 to strengthen, make the air pressure who gets into slow storage chamber 7 through pressure regulating channel 6 strengthen, make the effort of elasticity resumes 5 to floater 3 to the effort of floater 3 overcome to the atmospheric pressure in the slow storage chamber 7, make floater 3 float, under the effect of horizontal atmospheric pressure, floater 3 is pressed and blocks up the air current process in gas outlet 42, the realization is opened circuit. The utility model discloses an automatic gas valve that blocks, low reaches gas leak or high temperature fusing can melt connector 9 back, can block the gas route automatically, realize opening circuit.
Further, the fusible connector 9 is tubular, one end of the fusible connector 9 is provided with a connecting thread connected with the valve seat 1, the other end of the fusible connector 9 is provided with a hollow baffle ring part 91, the nozzle is provided with an annular connecting part and a connecting pipe part, the connecting pipe part is arranged through the hollow baffle ring part 91, and the annular connecting part is located between the hollow baffle ring part 91 and the end face of the valve seat 1. The utility model discloses an automatic gas valve of interdiction, fusible connector 9 easily fuses.
Furthermore, the open end of the slow storage chamber 7 is provided with an abutting arc surface for contacting with the floating ball 3, a notch 71 is arranged at the position of the abutting arc surface close to the air inlet 41, and when the floating ball 3 abuts against the abutting arc surface, the air flow flowing from the pressure regulating channel 6 to the slow storage chamber 7 can enter the ball chamber 4 through the notch 71. The utility model discloses an automatic gas valve that blocks, breach 71 can make slow reservoir 7 and ball room 4 be on-state under the normal condition, take place the gas leakage or can fuse the connector 9 and take place the fuse back when 3 low reaches of floater, can lead to in the twinkling of an eye the air current through ball room 4 to strengthen, make the air pressure who gets into slow reservoir 7 through pressure regulating channel 6 strengthen, because the aperture of breach 71 is less than the bore of gas outlet 42, make the atmospheric pressure in the slow reservoir 7 rise, elastic recovery piece 5 is overcome the effort to floater 3 to the effort of floater 3, make floater 3 float, under the effect of horizontal atmospheric pressure, floater 3 is pressed and blocks up the air current process in gas outlet 42, the realization is opened circuit.
Specifically, the pressure regulating passage 6 is axially parallel to the air inlet 41.
Further, the restoring mechanism 8 includes a support 81 connected to the valve seat 1, a pressing member 82, and a spring for restoring the position of the pressing member 82, the pressing member 82 is disposed on the support 81 so as to be capable of reciprocating, both ends of the spring are connected to the support 81 and the pressing member 82, respectively, and both ends of the elastic restoring member 5 are connected to the float 3 and the pressing member 82, respectively.
Further, the supporting body 81 is screwed with the valve seat 1. The utility model discloses an automatic gas valve that blocks easily connects.
Further, the elastic restoring member 5 is a spring. The utility model discloses an automatic gas valve that blocks easily connects simple structure.
Further, the diameter of the pressure regulating channel 6 is 0.1-0.45 times of the diameter of the air inlet 41. The utility model discloses an automatic gas valve of interdiction because the aperture of pressure regulating passageway 6 is less than the bore of gas outlet 42 for after the downstream emergence is leaked, atmospheric pressure in the slow storage chamber 7 can rise fast.
Further, the fusible link 9 is a fusible link 9 made of a plastic material. The utility model discloses an automatic gas valve of interdiction, fusible connector 9 easily fuses. Specifically, the fusing temperature of the fusible link 9 is 150 ℃ to 500 ℃.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the effectiveness of the prior art and has practicability, and thus it is a product with practical value.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. An automatic shutoff gas valve, comprising a main passage and a valve seat, characterized in that: the ball valve also comprises a floating ball, a ball chamber, an elastic restoring piece, a pressure regulating channel, a fusible connector, a slow storage chamber and a restoring mechanism for restoring the floating ball, wherein the main channel, the ball chamber and the slow storage chamber are arranged on the valve seat;
the ball chamber is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the main channel, and the caliber of the air outlet is smaller than the diameter of the floating ball; an annular baffle part I and an annular baffle part II are arranged between the ball chamber and the main channel, and an air inlet and an air outlet are respectively arranged on the annular baffle part I and the annular baffle part II; the ball chamber and the buffer chamber are arranged between the first annular baffle part and the second annular baffle part;
the slow storage chamber is arranged below the ball chamber and communicated with the ball chamber;
the pressure regulating channel is arranged on the first annular blocking part and is arranged in parallel with the air inlet, and the diameter of the pressure regulating channel is smaller than that of the air inlet;
the floating ball is movably arranged in the ball chamber, the diameter of the floating ball is larger than the caliber of the buffer chamber, and the floating ball is connected with the recovery mechanism through the elastic recovery piece;
the nozzle is connected to the end of the main channel near the air outlet through a fusible connecting body.
2. An automatically interruptible gas valve according to claim 1 wherein: the fusible connector is tubular, one end of the fusible connector is provided with a connecting thread connected with the valve seat, the other end of the fusible connector is provided with a hollow baffle ring part, the nozzle is provided with an annular connecting part and a connecting pipe part, the connecting pipe part penetrates through the hollow baffle ring part, and the annular connecting part is positioned between the hollow baffle ring part and the end face of the valve seat.
3. An automatically interruptible gas valve according to claim 1 wherein: the open end of slow reservoir is provided with the butt cambered surface that is used for with the floater contact, and the position that the butt cambered surface is close to the air inlet is provided with a breach, and when the floater butt was in the butt cambered surface, the air current accessible breach from the pressure regulating channel flow direction slow reservoir got into the ball room.
4. An automatically interruptible gas valve according to claim 1 wherein: the pressure regulating channel is axially parallel to the air inlet.
5. An automatically interruptible gas valve according to claim 1 wherein: the recovery mechanism comprises a supporting body connected with the valve seat, a pressing part and a spring for recovering the position of the pressing part, the pressing part can be arranged on the supporting body in a reciprocating mode, two ends of the spring are respectively connected with the supporting body and the pressing part, and two ends of the elastic recovery part are respectively connected with the floating ball and the pressing part.
6. An auto-shutoff gas valve as claimed in claim 5, wherein: the support body is in threaded connection with the valve seat.
7. An automatically interruptible gas valve according to claim 1 wherein: the elastic restoring member is a spring.
8. An automatically interruptible gas valve according to claim 1 wherein: the diameter of the pressure regulating channel is 0.1-0.45 times of the diameter of the air inlet.
9. An automatically interruptible gas valve according to any one of claims 1 to 8, wherein: the fusible connector is made of plastic.
10. An automatically interruptible gas valve according to any one of claims 1 to 8, wherein: the fusing temperature of the fusible connector is 150-500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020629521.4U CN212004424U (en) | 2020-04-24 | 2020-04-24 | Automatic shutoff gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020629521.4U CN212004424U (en) | 2020-04-24 | 2020-04-24 | Automatic shutoff gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212004424U true CN212004424U (en) | 2020-11-24 |
Family
ID=73405306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020629521.4U Active CN212004424U (en) | 2020-04-24 | 2020-04-24 | Automatic shutoff gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212004424U (en) |
-
2020
- 2020-04-24 CN CN202020629521.4U patent/CN212004424U/en active Active
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