CN219692355U - High-flow self-closing device and valve using same - Google Patents
High-flow self-closing device and valve using same Download PDFInfo
- Publication number
- CN219692355U CN219692355U CN202321011439.5U CN202321011439U CN219692355U CN 219692355 U CN219692355 U CN 219692355U CN 202321011439 U CN202321011439 U CN 202321011439U CN 219692355 U CN219692355 U CN 219692355U
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- self
- closing
- valve
- valve body
- core
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- 238000007789 sealing Methods 0.000 claims description 45
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 29
- 239000003915 liquefied petroleum gas Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model provides a large-flow self-closing device which comprises a self-closing valve body, wherein a self-closing core is arranged in the self-closing valve body, a self-closing pressure spring is arranged between the self-closing core and the inner wall of the self-closing valve body, one end of the self-closing pressure spring is propped against the self-closing core, the other end of the self-closing pressure spring is propped against the side wall of the self-closing valve body, a fixing screw is arranged in the self-closing core, one end of the fixing screw, which is far away from the self-closing core, is in threaded connection with a self-closing valve core head, and one end of the self-closing valve core head extends out of the self-closing valve body. The utility model also discloses a valve using the high-flow self-closing device. The valve of the high-flow self-closing device is utilized to drive the valve body and the valve pad which are connected with the valve rod to move upwards by screwing the hand wheel, so that a gas channel in the valve body is opened, and the rubber flat pad seals a gap between the valve body and the valve rod under the action of gas.
Description
Technical Field
The utility model relates to the technical field of self-closing devices, in particular to a high-flow self-closing device and a valve using the same.
Background
Liquefied petroleum gas is a colorless volatile liquid obtained by pressurizing, cooling and liquefying natural gas or petroleum in a petroleum refinery. It is extremely easy to self-ignite, and when the content of the natural gas in the air reaches a certain concentration range, the natural gas can explode when encountering open fire. The liquefied petroleum gas obtained from oil refinery has one or two of propane, propylene, butane and butene as main components, and is doped with small amount of pentane, pentene and sulfide impurity. The liquefied petroleum gas is used as fuel and has the advantages of high heat value, no smoke dust, no carbon residue and convenient operation and use.
Liquefied petroleum gas is usually stored in a liquefied petroleum gas cylinder, and leakage of the liquefied petroleum gas is prevented through the installation of the self-closing device on the liquefied petroleum gas cylinder, so that people can use the liquefied petroleum gas safely, but after the existing installation of the self-closing device on the liquefied petroleum gas cylinder, a certain influence can be generated on filling speed, the self-closing safety is considered, meanwhile, large flow can be realized, and the flow of the self-closing valve on the liquefied petroleum gas cylinder also has influence on the working efficiency of the liquefied petroleum gas of customers with large dosage such as hotels, restaurants, one-end multi-kitchen ranges and the like.
Disclosure of Invention
The utility model aims to provide a large-flow self-closing device and a valve using the same, which are used for solving the technical problem that the self-closing device on a liquefied petroleum gas cylinder in the prior art cannot realize large flow while considering self-closing safety.
In order to achieve the above object, in one embodiment of the present utility model, a high-flow self-closing device is provided, which includes a self-closing valve body, a self-closing core is disposed inside the self-closing valve body, a self-closing compression spring is disposed between the self-closing core and an inner wall of the self-closing valve body, one end of the self-closing compression spring is disposed on the self-closing core, the other end is disposed on a side wall of the self-closing valve body, a fixing screw is disposed inside the self-closing core, one end of the fixing screw, which is far away from the self-closing core, is in threaded connection with a self-closing valve core head, and one end of the self-closing valve core head extends out of the self-closing valve body.
Preferably, at least one sealing piece which enables the self-closing core to be in sealing fit with the inner wall of the self-closing valve body is embedded on the outer wall of the self-closing core.
Preferably, a sealing ring which is in airtight fit with the inner wall of the self-closing valve body is arranged on the outer wall of the self-closing valve core.
Based on the large-flow self-closing device disclosed by the utility model, the utility model also discloses a valve utilizing the large-flow self-closing device, which comprises the large-flow self-closing device arranged in the valve body;
the top of the valve body is provided with a pressing nut, a valve rod is arranged in the pressing nut, one end of the valve rod, which is far away from the valve body, is provided with a hand wheel, and the hand wheel is connected with a sealing cover assembly sleeved on the valve rod;
one end of the valve rod, which is close to the valve body, is connected with a valve body positioned in the valve body, a valve pad is arranged below the valve body, and a gas channel communicated with the self-closing device is arranged in the valve body;
the outer wall of the valve rod is provided with a rubber flat gasket for sealing a gap between the valve body and the valve rod.
Preferably, the sealing cover assembly comprises a pressure spring arranged between the hand wheel and the outer wall of the valve rod, one end of the pressure spring is connected with a pressure spring nut, and the outer wall of the pressure spring nut is provided with a plug cover.
Preferably, one end of the valve rod, which is far away from the hand wheel, is provided with a connecting sheet, and one end of the connecting sheet, which is far away from the valve rod, is connected with the valve body.
Preferably, a soft steel paper flat pad is arranged between the hand wheel and the pressing nut, and the soft steel paper flat pad is sleeved on the valve rod.
Preferably, the lower end of the valve body is connected with a spacer bush in a threaded manner.
Preferably, an elastic retainer ring is arranged between the inner wall of the valve body and the self-closing device, and an O-shaped ring is arranged between the outer wall of the valve rod and the pressing nut.
In summary, the beneficial effects of the utility model are as follows:
1. the self-closing device of the utility model is propped against the sealing end face of the self-closing valve core of the self-closing device in place through the sealing piece at the front end of the standard connector which is required to be connected, after the self-closing pressure spring is in close contact, the self-closing core is automatically pushed, the self-closing pressure spring is compressed to further drive the self-closing valve core head to move forwards, at the moment, a gas channel between the self-closing device and the valve body is opened, gas in the gas cylinder can be discharged through the self-closing device, and the gas in the gas cylinder can be discharged through the self-closing device or filled into the gas cylinder when the self-closing device is filled; when the outer connecting joint is retracted, the self-closing core is reset and moved forward under the action of the self-closing pressure spring, so that the self-closing valve core head seals the gas channel, and the self-closing safety function is achieved.
2. The self-closing device is designed from the safety aspect, and most of safety accidents of the past valve are caused by the fact that the external connecting joint is not connected in place, so that the connecting part is not sealed, and when a main valve switch is opened, a leakage point is formed at the connecting part, so that the self-closing device is arranged for the safety hidden trouble; if the external connection is not in place, the sealing element in front of the connector can not push the self-closing valve core of the self-closing device, so that even if the main valve is opened, the gas in the bottle is still closed by the self-closing device, so that the gas can not leak, and the safety is ensured. Therefore, the opening condition of the self-closing device is that the standard sealing piece at the front end of the external standard connector is propped against the sealing conical surface of the valve core of the self-closing valve, and the self-closing valve channel can be opened after the tight sealing contact thrust is generated under the action of the self-closing pressure spring.
3. The valve of the high-flow self-closing device is utilized to drive the valve body and the valve pad which are connected with the valve rod to move upwards by screwing the hand wheel, so that a gas channel in the valve body is opened, and the rubber flat pad seals a gap between the valve body and the valve rod under the action of gas.
4. The self-closing device has the advantage of large flow, and the gas in the gas cylinder needs to be discharged through the self-closing device, so that the working efficiency of the gas cylinder can be improved due to the large flow of the self-closing device.
Drawings
FIG. 1 is a schematic view of a valve using a self-closing apparatus according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of an embodiment of the self-closing apparatus of the present utility model.
The valve comprises a 1-self-valve body, a 2-self-closing core, a 3-self-closing pressure spring, a 4-fixing screw, a 5-self-closing valve core head, a 6-sealing piece, a 7-sealing ring, an 8-self-closing device, a 9-pressing nut, a 10-valve rod, an 11-hand wheel, a 12-valve body, a 13-valve pad, a 14-rubber flat pad, a 15-pressure spring, a 16-pressure spring nut, a 17-plug cover, a 18-connecting piece, a 19-mild steel paper flat pad, a 20-spacer bush, a 21-elastic retainer ring, a 22-O-shaped ring and a 23-valve body.
Detailed Description
The utility model provides a large-flow self-closing device 8, which comprises a self-valve body 1, wherein a self-closing core 2 is arranged in the self-valve body 1, the self-closing core 2 is connected with an external abutting piece, and the abutting piece can be a pressure reducing valve or other structures capable of pushing the self-closing core 2 to move forwards. At least one sealing piece 6 which is matched with the inner wall of the self-closing valve body 1 in a sealing way is embedded on the outer wall of the self-closing core 2.
A self-closing pressure spring 3 is arranged between the self-closing core 2 and the inner wall of the self-valve body 1, one end of the self-closing pressure spring 3 is propped against the self-closing core 2, and the other end is propped against the side wall of the self-valve body 1. The inside of the self-closing core 2 is provided with a rubberizing fixing screw 4, one end of the fixing screw 4 far away from the self-closing core 2 is in threaded connection with a self-closing valve core head 5, and one end of the self-closing valve core head 5 extends out of the valve body 1. The self-closing valve core head 5 is hexagonal in shape, so that the fixing screw 4 can be reliably fastened by glue during installation. The outer wall of the self-closing valve core head 5 is provided with a sealing ring 7 which is in airtight fit with the inner wall of the self-closing valve body 1. When the external propping piece pushes the self-closing core 2 to move forwards, the self-closing valve core head 5 is driven to move forwards by the fixing screw 4, a gas channel between the self-closing device 8 and a valve body 23 described below is opened, and gas in the gas cylinder can be discharged through the self-closing device 8; because the self-closing core 2 moves forward, the self-closing pressure spring 3 arranged between the self-closing core 2 and the inner wall of the self-valve body 1 is compressed, when the abutting piece is removed, the self-closing pressure spring 3 is restored to the original state, and then the self-closing valve core head 5 is driven to move backward, so that the gas channel is closed.
A valve using a large-flow self-closing device comprises a large-flow self-closing device 8 arranged in a valve body 23, wherein the self-closing device 8 is in non-threaded fit with the valve body 23. A circlip 21 with a square cross section is arranged between the inner wall of the valve body 23 and the self-closing device 8. The top of valve body 23 is provided with presses female 9, presses female 9 inside to be provided with valve rod 10, is provided with O shape circle 22 between valve rod 10 outer wall and the female 9 of pressure. An O-ring 22 is provided for enhancing the tightness between the valve stem 10 and the press nut 9.
The end of the valve rod 10 far away from the valve body 23 is provided with a hand wheel 11, and the valve is opened and closed by screwing the hand wheel 11. A soft steel paper flat pad 19 is arranged between the hand wheel 11 and the pressing nut 9, and the soft steel paper flat pad 19 is sleeved on the valve rod 10.
The hand wheel 11 is connected with a cover assembly sleeved on the valve rod 10. The sealing cover assembly comprises a pressure spring 15 arranged between the hand wheel 11 and the outer wall of the valve rod 10, one end of the pressure spring 15 is connected with a pressure spring nut 16, and the outer wall of the pressure spring nut 16 is provided with a plug cover 17. The compression spring 15 is used for enhancing the sealing effect of the sealing end surface of the valve rod 10, the rubber flat gasket 14, the O-shaped ring 22 and the end surface of the pressing nut 9, which are described below.
One end of the valve rod 10, which is close to the valve body 23, is connected with a valve body 12 positioned in the valve body 23, one end of the valve rod 10, which is far away from the hand wheel 11, is provided with a connecting sheet 18, one end of the connecting sheet 18, which is far away from the valve rod 10, is connected with the valve body 12, and the valve body 12 is connected with the valve rod 10 through the connecting sheet 18. The valve body 12 is in threaded connection with the valve body 23, and a valve pad 13 for sealing a gas passage inside the valve body 23 described below is arranged below the valve body 12, and a gas passage communicating with the self-closing apparatus 8 is opened inside the valve body 23.
The outer wall of the valve stem 10 is provided with a rubber flat gasket 14 for sealing the gap between the valve body 23 and the valve stem 10. The O-shaped sealing ring of the main valve is embedded on the valve rod 10 by a common valve manufacturer, and the valve has the advantages of convenient installation and easy installation automation, but the strength of the valve rod 10 is weakened due to the fact that the sealing ring groove is formed in the valve rod 10, and stress concentration is generated in the groove, so that the valve rod 10 is broken and fatal safety failure is caused if abnormal conditions occur. In order to eliminate the above-mentioned potential safety hazard, there are individual valve factories to set the seal ring on the press nut 9, and to process the O-ring mounting groove in the inner hole of the press nut 9, which of course can play a role in preventing the broken safety effect of the valve rod 10, but brings difficulty to automatic installation, and the size of the inner groove is not easy to detect, the finish in the groove is not easy to distinguish, etc. The O-shaped ring 22 is arranged on the inner port of the pressing nut 9, so that the strength of the valve rod 10 is ensured, the potential safety quality hazards of possible breakage of the valve rod 10 are eliminated, the defects that the inner groove of the pressing nut 9 is difficult to control quality, the automatic installation is difficult and the like are overcome, the end seal of the O-shaped ring 22 is added besides the inner sealing effect and the outer sealing effect, and the dual sealing effect of radial sealing and axial sealing is realized. One end of the valve rod is close to the end of the pressing nut 9, one end of the valve rod is close to the surface of the rubber flat pad 14, and the sealing end face of the valve rod 10, the rubber flat pad 14, the O-shaped ring 22 and the end face of the pressing nut 9 are tightly attached by the tensile force of the pressure spring 15 on the valve rod 10, so that the sealing effect is better, meanwhile, the rubber flat pad 14 and the O-shaped ring 22 are designed at the positions, the pressure in the bottle plays a role in helping the sealing element to be tightly attached after the valve is opened, and the larger the pressure is, the larger the effect is. The rubber flat pad 14 is arranged at the same time, so that the length of the valve rod 10 can be shortened, and the cost is saved. When the gas channel inside the valve body 23 is opened, a part of gas can reach the position of the rubber flat pad 14, so that the rubber flat pad 14 seals the gap between the valve body 23 and the valve rod 10 under the action of the gas, thereby achieving the purpose of closing the valve.
The lower end of the valve body 23 is connected with a spacer 20 in a threaded manner. The spacer 20 has the main function of preventing the user from automatically pouring the residual liquid, and the user is difficult to pour the residual liquid by himself after the spacer 20 is arranged, so that the safety of people is envisaged, and in addition, impurities in the bottle are prevented from entering the bottle valve when the bottle is poured, and the sealing performance of the valve is influenced.
Working principle and process: principle of operation of the self-closing apparatus 8: the self-closing device 8 is propped against the conical end sealing surface of the self-closing core 2 through an external matched standard joint and a standard sealing piece at the front end, when the contact surface pressure is higher than the pre-pressing force of the self-closing pressure spring 3 of the internal self-closing device (the contact surface has reached the sealing effect at the moment), the self-closing core 2 is propped to move inwards, the self-closing valve core head 5 is driven to move forwards through the fixing screw 4, a gas channel between the self-closing device 8 and a valve body 23 is opened at the moment, and gas in a gas cylinder can be discharged through the self-closing device 8 or external gas can be discharged through the self-closing device 8 during filling; because the self-closing core 2 moves forward, the self-closing pressure spring 3 arranged between the self-closing core 2 and the inner wall of the self-valve body 1 is compressed, when the external joint is removed, the self-closing pressure spring 3 restores to the original state, and then the self-closing valve core head 5 is driven to move backward, so that the gas channel is closed.
The working principle of the valve of the high-flow self-closing device is utilized: the valve drives the valve rod 10 connected with the hand wheel 11 to rotate by screwing the hand wheel 11, and the valve rod 10 at the moment drives the valve body 12 and the valve pad 13 to move in an up-down spiral mode through the connecting sheet 18, and the valve body 12 is in threaded connection with the valve body 23, so that the valve is opened and closed. The pressure in the bottle has the beneficial effect of helping the sealing element to tightly adhere when the valve is opened, and the sealing effect is more tight when the pressure is higher, and of course, the special point here is that the O-ring 22 tightly adhered to the inner and outer diameters and the rubber flat pad 14 tightly pressed by interference can also be used for realizing the complete sealing when the pressure is low.
Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (9)
1. A high-flow self-closing device is characterized in that: the self-closing valve comprises a self-closing valve body, a self-closing core is arranged inside the self-closing valve body, a self-closing pressure spring is arranged between the self-closing core and the inner wall of the self-closing valve body, one end of the self-closing pressure spring is propped against the self-closing core, the other end of the self-closing pressure spring is propped against the side wall of the self-closing valve body, a fixing screw is arranged inside the self-closing core, one end of the fixing screw, far away from the self-closing core, is in threaded connection with a self-closing valve core head, and one end of the self-closing valve core head extends out of the self-closing valve body.
2. A high flow self-closing apparatus as defined in claim 1, wherein: at least one sealing piece which enables the self-closing core to be in sealing fit with the inner wall of the self-closing valve body is embedded on the outer wall of the self-closing core.
3. A high flow self-closing apparatus as defined in claim 1, wherein: the self-closing valve core head outer wall is provided with a sealing ring which is in airtight fit with the self-closing valve body inner wall.
4. A valve utilizing a high flow self-closing device, characterized in that: a high flow self-closing device as claimed in any one of claims 1 to 3 mounted inside a valve body;
the top of the valve body is provided with a pressing nut, a valve rod is arranged in the pressing nut, one end, far away from the valve body, of the valve rod is provided with a hand wheel, and the hand wheel is connected with a sealing cover assembly sleeved on the valve rod;
one end of the valve rod, which is close to the valve body, is connected with a valve body positioned in the valve body, a valve pad is arranged below the valve body, and a gas channel communicated with the self-closing device is arranged in the valve body;
and a rubber flat gasket for sealing a gap between the valve body and the valve rod is arranged on the outer wall of the valve rod.
5. A valve utilizing a high flow self-closing apparatus as defined in claim 4, wherein: the sealing cover assembly comprises a pressure spring arranged between the hand wheel and the outer wall of the valve rod, one end of the pressure spring is connected with a pressure spring nut, and the outer wall of the pressure spring nut is provided with a plug cover.
6. A valve utilizing a high flow self-closing apparatus as defined in claim 4, wherein: one end of the valve rod, which is far away from the hand wheel, is provided with a connecting sheet, and one end of the connecting sheet, which is far away from the valve rod, is connected with the valve body.
7. A valve utilizing a high flow self-closing apparatus as defined in claim 4, wherein: and a soft steel paper flat pad is arranged between the hand wheel and the pressing nut, and the soft steel paper flat pad is sleeved on the valve rod.
8. A valve utilizing a high flow self-closing apparatus as defined in claim 4, wherein: the lower end of the valve body is connected with a spacer bush in a threaded manner.
9. A valve utilizing a high flow self-closing apparatus as defined in claim 4, wherein: an elastic retainer ring is arranged between the inner wall of the valve body and the self-closing device, and an O-shaped ring is arranged between the outer wall of the valve rod and the pressing nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011439.5U CN219692355U (en) | 2023-04-28 | 2023-04-28 | High-flow self-closing device and valve using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011439.5U CN219692355U (en) | 2023-04-28 | 2023-04-28 | High-flow self-closing device and valve using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219692355U true CN219692355U (en) | 2023-09-15 |
Family
ID=87945430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321011439.5U Active CN219692355U (en) | 2023-04-28 | 2023-04-28 | High-flow self-closing device and valve using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219692355U (en) |
-
2023
- 2023-04-28 CN CN202321011439.5U patent/CN219692355U/en active Active
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