CN220168652U - Cam type gas pipeline self-closing valve - Google Patents
Cam type gas pipeline self-closing valve Download PDFInfo
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- CN220168652U CN220168652U CN202320590119.3U CN202320590119U CN220168652U CN 220168652 U CN220168652 U CN 220168652U CN 202320590119 U CN202320590119 U CN 202320590119U CN 220168652 U CN220168652 U CN 220168652U
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- 238000007789 sealing Methods 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 63
- 239000000306 component Substances 0.000 description 12
- 239000002737 fuel gas Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a cam type gas pipeline self-closing valve, which comprises a valve body, a transmission sealing assembly, a push block and a self-closing regulating assembly, wherein the valve body is provided with a valve seat; one end of the valve body is an air inlet, and the other end is an air outlet; the transmission sealing assembly comprises a cam, a first connecting rod, a second connecting rod, a valve rod arranged along the gas circulation direction and a sealing block for sealing the gas inlet of the valve body; the cam is rotationally connected in the inner cavity of the valve body, one end of the first connecting rod is eccentrically hinged on the cam, and the other end of the first connecting rod is hinged with the valve rod; one end of the second connecting rod is eccentrically hinged on the cam, and the other end of the second connecting rod is hinged with the pushing block; the sealing block is fixedly arranged at one end of the valve rod, which is not hinged with the first connecting rod, so that the movement of the pushing block can drive the sealing block on the valve rod to seal or conduct the air inlet of the valve body. The utility model has the advantages of few moving parts, simple structure, high gas flow efficiency, stable transmission and high use safety, and is suitable for the self-closing regulation and control of gas.
Description
Technical Field
The utility model relates to a gas pipeline self-closing valve, in particular to a cam type gas pipeline self-closing valve.
Background
The phenomena of overpressure, underpressure and overcurrent occur in the gas conveying process, which are also main factors affecting the gas safety. In order to improve the safety of gas use, a self-closing valve is usually arranged on a gas pipeline, and when the gas is in an overpressure, under-pressure and overcurrent state, the gas source is cut off in time through a transmission structure inside the self-closing valve.
The self-closing valve in the prior art comprises a lifting button component, a coating component, a magnetic component and a transmission component, wherein the transmission structure is a main component for improving the self-closing effect of the self-closing valve, and not only affects the sealing effect, but also affects the speed of gas circulation.
The Chinese patent with the publication number of CN205877317U and the name of a pipeline gas self-closing valve discloses a structure of the self-closing valve, which comprises a valve body, a coating and a valve core, wherein one end of the valve rod is provided with a plug, an air pressure cavity is formed between the lower side surface of the coating and the inner wall of the valve body, the valve core is used for sealing the valve body, the valve core moves through a magnet and an attracting part, the valve core comprises a connecting column capable of moving up and down, a transmission pin is arranged on the connecting column, and a chute is arranged in the valve rod. The transmission pin is made to be smaller than the sliding groove in order to slide in the sliding groove, so that the transmission process is unstable, and a bearing is arranged in the valve body in order to ensure the stability of the transmission of the valve rod. The disadvantage of this approach is: the whole structure is complex, the installation is not easy, the arrangement of the bearing influences the flow of fuel gas, and the gas circulation effect is poor; meanwhile, the transmission pin and the sliding groove are loosely connected, and the transmission efficiency is low.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide the cam type gas pipeline self-closing valve so as to achieve the purposes of simplifying a transmission structure, stabilizing transmission and improving gas flow efficiency.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the cam type gas pipeline self-closing valve comprises a valve body provided with an inner cavity, a transmission sealing assembly for enabling gas to be on-off in the inner cavity of the valve body, a push block for enabling the transmission sealing assembly to act, and a self-closing regulating assembly for enabling the push block to move along the vertical direction of gas circulation under the action of external force or gas pressure floating; one end of the valve body is an air inlet, and the other end is an air outlet;
the transmission sealing assembly comprises a cam, a first connecting rod, a second connecting rod, a valve rod arranged along the gas circulation direction and a sealing block for sealing an air inlet of the valve body; the cam is rotationally connected in the inner cavity of the valve body, one end of the first connecting rod is eccentrically hinged on the cam, and the other end of the first connecting rod is hinged with the valve rod; one end of the second connecting rod is eccentrically hinged on the cam, and the other end of the second connecting rod is hinged with the pushing block; the sealing block is fixedly arranged at one end of the valve rod, which is not hinged with the first connecting rod, so that the movement of the pushing block can drive the sealing block on the valve rod to seal or conduct the air inlet of the valve body.
As the limitation of the utility model, an upper boss and a lower boss are arranged in the inner cavity of the valve body, a gap is formed between the upper boss and the lower boss, and a valve rod is connected in the gap in a sliding way; the upper boss is provided with a channel for circulating gas.
As a second limitation of the present utility model, the sealing block is made of rubber.
As the limitation of the utility model, a switch device for manually switching the valve is arranged on the air outlet of the valve body.
As a third limitation of the present utility model, the self-closing regulating and controlling assembly includes a lifting button assembly, a coating assembly and a magnetic attraction assembly;
the lifting button assembly comprises a lifting button seat fixedly arranged on the valve body and provided with an inner cavity, a lifting button arranged on the lifting button seat and a lifting pull rod fixedly arranged on the lifting button;
the diaphragm assembly divides the inner cavity of the valve body and the inner cavity of the lifting button seat into two parts which are not communicated with each other, and the lifting pull rod penetrates through the diaphragm assembly, extends to the inner cavity of the valve body and is fixedly connected with the diaphragm assembly;
the magnetic assembly comprises an upper armature, a lower armature and a magnet, wherein the upper armature is fixedly arranged at one end of the lifting rod, which is arranged in the inner cavity of the valve body, the lower armature is fixedly arranged in the inner cavity of the valve body, the magnet is arranged between the upper armature and the lower armature, and the push block penetrates through the lower armature to be fixedly connected with the magnet; the push block is provided with a shaft shoulder for limiting the ascending height of the magnet, and the shaft shoulder and the magnet are respectively arranged on two sides of the lower armature.
As a limitation of the present utility model, the membrane assembly includes a membrane and a membrane tablet fixed in an inner cavity of the valve body.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
(1) According to the utility model, the transmission direction of the transmission sealing assembly is changed by utilizing the structure of the four connecting rods and the eccentric structure, so that the self-closing regulation and control of fuel gas are realized, the self-closing effect can be realized although the structure is simple and moving parts are reduced, the space occupied by the rod-shaped connecting rods and the sheet-shaped cams is smaller, the fuel gas flow resistance is also reduced, the fuel gas circulation rate is improved, and the use effect is better; meanwhile, the matching degree of all the components is high, the structure is compact, and the transmission is stable;
(2) The upper boss and the lower boss can provide accurate guide channels for the valve rod, so that the accuracy of the valve rod movement is improved, and the air inlet of the valve body is sealed more tightly;
(3) According to the utility model, the switch device for manual opening and closing is arranged on the air outlet of the valve body, and the self-closing structure is arranged on the air inlet, so that double guarantees are provided, and the safety effect is better;
(4) According to the lifting button assembly, through the relation between the magnet attraction and the gas buoyancy, the switch of the valve body can be automatically adjusted according to the state of the gas, the accuracy is high, and the safety of gas use is improved.
In conclusion, the utility model has the advantages of few moving parts, simple structure, high gas flow efficiency, stable transmission and high use safety, and is suitable for self-closing regulation and control of gas.
Drawings
The utility model will be described in more detail below with reference to the accompanying drawings and specific examples.
FIG. 1 is a schematic cross-sectional view of a pipeline according to an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of a transmission seal assembly according to an embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of the embodiment of the utility model in which the gas in the pipe is in overpressure and the magnet is separated from the upper armature;
fig. 4 is a schematic cross-sectional structure of the fuel gas in the pipeline in the embodiment of the utility model when the fuel gas is in a pressure-loss closing state.
In the figure: 1. a valve body; 2. a transmission seal assembly; 21. a cam; 22. a first link; 23. a second link; 24. a valve stem; 25. a sealing block; 3. a pushing block; 4. an upper boss; 5. a lower boss; 6. a switching device; 7. a button lifting assembly; 71. a button lifting seat; 72. a lifting button; 73. a lifting rod; 8. a film assembly; 81. a membrane; 82. tabletting the membrane; 9. a magnetic attraction component; 91. an upper armature; 92. a lower armature; 93. a magnet; 10. an air intake duct; 11. and an air outlet pipeline.
Detailed Description
Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are presented for purposes of illustration and understanding only, and are not intended to limit the utility model.
Embodiment is a cam type gas pipeline self-closing valve
As shown in fig. 1, the present embodiment includes a valve body 1, a transmission seal assembly 2, a push block 3, and a self-closing regulating assembly. The valve body 1 is provided with an inner cavity for gas circulation. The transmission sealing component 2 is arranged along the direction of gas circulation and is used for enabling the inner cavity of the valve body 1 to be opened or closed, and gas on-off is realized by enabling the gas inlet to be opened or closed. The pushing block 3 is used for enabling the transmission sealing assembly 2 to act, and the pushing block 3 moves along the direction perpendicular to the gas circulation. The self-closing regulating and controlling assembly is used for adapting to overpressure, undervoltage and overcurrent of the fuel gas, and when the pressure of the fuel gas floats, the self-closing regulating and controlling assembly can move along the vertical direction of the fuel gas circulation to drive the pushing block 3 to move, so that the transmission sealing assembly 2 can be in an opened or closed state. When the valve body 1 is self-closed, the gas in the valve is regulated, and after the valve body is normal, the valve body 1 is normally ventilated through external force.
The valve body 1 has a structure in its inner cavity adapted to its inner parts. One end of the valve body 1 is an air inlet, the other end is an air outlet, the air inlet is connected with an air inlet pipeline 10, and the air outlet is connected with an air outlet pipeline 11.
As shown in fig. 2, the transmission sealing assembly 2 is a core component of the self-closing valve, which is used for opening and closing the air inlet of the valve body 1 and ensuring that the air has enough circulation space. The transmission seal assembly 2 includes a cam 21, a first link 22, a second link 23, a valve stem 24, and a seal block 25. The cam 21 is disc-shaped, and the center of the cam 21 is rotationally connected in the inner cavity of the valve body 1 through a rotating shaft. The valve stem 24 is disposed in the gas flow direction. One end of the first link 22 is eccentrically hinged to the cam 21, and the other end is hinged to the valve stem 24. The sealing block 25 is fixedly arranged at one end of the valve rod 24, which is not hinged with the first connecting rod 22, and is used for sealing the air inlet of the valve body 1, and the sealing block 25 is made of rubber. One end of the second connecting rod 23 is eccentrically hinged on the cam 21, and the other end is hinged with the push block 3. The hinge points of the first link 22 and the second link 23 on the cam 21 are located above the center of the cam 21, and the hinge point of the first link 22 and the cam 21 is located on the left side (left side in fig. 1) of the center of the cam 21, and the hinge point of the second link 23 and the cam 22 is located on the right side (right side in fig. 1) of the center of the cam 21. In this embodiment, through the arrangement of the push block 3 and the transmission sealing assembly 2, the force of the push block 3 along the direction perpendicular to the air flowing direction is converted into the force of the valve rod 24 along the air flowing direction, so that the sealing block 25 can be close to or far away from the air inlet of the valve body 1, and the purpose of closing or conducting the air inlet of the valve body 1 is achieved.
Further, in order to ensure the stability and smoothness of the movement of the valve rod 24, an upper boss 4 and a lower boss 5 are arranged in the inner cavity of the valve body 1, and the upper boss 4 and the lower boss 5 are integrated with the valve body 1. A gap is formed between the upper boss 4 and the lower boss 5, in which the valve stem 24 is slidably coupled, and the movement position of the valve stem 24 is prevented from being shifted by the restriction of the upper boss 4 and the lower boss 5. In order to ensure the circulation efficiency of the gas in the valve body 1, the upper boss 4 is provided with a channel for circulating the gas, namely, the upper boss 4 is in an inverted U shape, and the gas can circulate from the middle position of the upper boss 4.
In order to reduce the number of valves, the air outlet of the valve body 1 of the embodiment is also provided with a switch device 6 for manually adjusting the on-off of fuel gas. When the gas is not used for a long time, the pipeline can be closed or opened and closed by the switching device 6.
The self-closing regulating and controlling component is a relatively mature structure in the prior art, and the structure can automatically enable the pushing block 3 to move according to the overpressure, the decompression or the overflow state of the fuel gas in the pipeline, so that the on-off of the air inlet of the valve body 1 is ensured. The protection function of the self-closing valve is that the gas is in the process of self-closing when the pressure is floating in normal use, and when the gas pressure in the valve body 1 is floating and self-closing, the gas needs to be manually reset. The self-closing regulating and controlling assembly of the embodiment comprises a lifting button assembly 7, a leather membrane assembly 8 and a magnetic attraction assembly 9. In the prior art, the manually reset component has a structure in the form of a lifting button and a structure in the form of a button, and the embodiment adopts the structure in the form of the lifting button.
The knob assembly 7 includes a knob seat 71, a knob 72, and a pull rod 73. The lifting button seat 71 is fixedly arranged on the valve body 1, and the lifting button seat 71 is provided with an inner cavity. The lifting button 72 is arranged on the lifting button seat 71, and the lifting rod 73 is fixedly arranged on the lifting button 72 and is positioned in the inner cavity of the lifting button seat 71.
The membrane assembly 8 comprises a membrane 81 and a membrane pressing sheet 82, the membrane 81 is made of a deformable material, the membrane 81 divides the inner cavity of the valve body 1 and the inner cavity of the knob lifting seat 71 into two parts which are not communicated with each other, and the membrane pressing sheet 82 is fixedly arranged on the membrane 81 and is positioned at the inner cavity part of the knob lifting seat 71. The lifting rod 73 penetrates through the diaphragm assembly 8 to extend into the inner cavity of the valve body 1, and the diaphragm pressing sheet 82 is fixedly connected with the lifting rod 73. Since the diaphragm 81 is made of a deformable material, it can deform with the pressure of the gas, and therefore, when the gas in the valve body 1 is over-pressurized, the diaphragm 81 expands, and when the gas in the valve body 1 is under-pressurized, the diaphragm 81 contracts. The diaphragm pressing piece 82 is disposed above the diaphragm 81, and the diaphragm pressing piece 82 and the diaphragm pressing piece are fixedly connected, so that the diaphragm pressing piece 82 can move along with the diaphragm 81 with the lifting rod 73.
The magnetic attraction component 9 can enable the magnetic force to be related to the buoyancy of the gas, and is used for self-closing regulation and control. The magnet assembly 9 includes an upper armature 91, a lower armature 92, and a magnet 93. Wherein, the upper armature 91 is fixedly arranged at one end of the lifting rod 73 arranged in the inner cavity of the valve body 1, the lower armature 92 is fixedly arranged in the inner cavity of the valve body 1, and the magnet 93 is arranged between the upper armature 91 and the lower armature 92 and can be adsorbed on the upper armature 91 or the lower armature 92. The lower armature 92 is provided with a through hole, and the push block 3 is fixedly connected with the magnet 93 through the through hole on the lower armature 92. The position of the magnet 93 is changed to drive the push block 3 to move, so that the cam 21 connected with the push block 3 drives the sealing block 25 on the valve rod 24 to move, and the opening and closing of the air inlet of the valve body 1 are realized. The push block 3 is provided with a shaft shoulder for limiting the lifting height of the magnet 93, and the cross-sectional area of the shaft shoulder is larger than that of the through hole of the lower armature 92, so that the shaft shoulder part of the push block 3 and the magnet 93 are respectively arranged at two sides of the lower armature 92.
When the fuel gas in the pipeline is in normal working, overpressure and decompression states, the action principle of each component is as follows:
as shown in fig. 1, when the gas in the gas pipe is in a normal state, the valve is opened: after the pipeline is ventilated, the lifting button 72 is pulled outwards by manpower, and the lifting rod 73 is driven to move outwards. After the gas in the valve body 1 is in overpressure or pressure loss, the magnet 93 and the upper armature 91 on the lifting rod 73 are both adsorbed on the lower armature 92, so that the lifting button 72 is lifted outwards to drive the lifting rod 73 to move upwards, so that the push block 3 connected with the magnet 93 moves upwards, meanwhile, the second connecting rod 23 drives the cam 21 to move clockwise, and then drives the first connecting rod 22 to push the sealing block 25 on the valve rod 24 to move rightwards, so that the sealing block 25 is far away from the gas inlet of the valve body 1, and the self-closing valve is normally ventilated at the moment and is in a normal working state.
As shown in fig. 3, when the gas in the gas pipe is in an overpressure state, the valve is closed: the ventilation pressure in the self-closing valve is larger than a set value, the diaphragm 81 generates protruding deformation towards the inner cavity of the lifting button 72 due to overpressure, the lifting rod 73 is driven to move upwards, at the moment, the gas buoyancy and the resultant force F1 'of the diaphragm 81 upwards are larger than the resultant force F2' of the attraction force of the lower armature 92 and the magnet 93 and the integral gravity of the transmission sealing assembly 2, the lifting rod 73 moves integrally upwards due to the deformation of the diaphragm 81, the pushing block 3 is driven to move upwards, the limiting part of the pushing block 3 connected with the magnet 93 moves upwards to touch the lower armature 92, the lower armature 92 plays a limiting role on the pushing block 3, meanwhile, a downward resistance F3 is generated on the pushing block 3, and the F3 is larger than the attraction force of the magnet 93 to the upper armature 91, so that the magnet 93 is separated from the upper armature 91, the pushing block 3 moves downwards, the second connecting rod 23 drives the cam 21 to rotate anticlockwise, and the valve rod 24 drives the sealing block 25 to move leftwards, so that the sealing block 25 is close to the air inlet of the valve body 1 and is tightly adhered with the lower armature, the gas circulation is blocked, and the self-closing valve overpressure is automatically closed, and the air source is cut off. When the gas inlet is closed, the gas pressure in the valve body 1 becomes small, and the lifting knob 72 moves downward to be closed.
As shown in fig. 4, when the gas in the gas pipe is in a pressure-loss state, the valve is closed: the ventilation pressure in the self-closing valve is smaller than a set value, at the moment, the gas buoyancy F1 is smaller than the resultant force F2 of the attraction force of the lower armature 92 and the magnet 93 and the integral gravity of the transmission sealing assembly 2, the push block 3 drives the lifting rod 73 to integrally move downwards, meanwhile, the second connecting rod 23 drives the cam 21 to rotate anticlockwise, and then drives the first connecting rod 22 to push the sealing block 25 on the valve rod 24 to move leftwards, so that the sealing block 25 is close to the air inlet of the valve body 1 and is tightly attached to the air inlet, the gas circulation is blocked, the undervoltage automatic closing of the self-closing valve is realized, and the air source is cut off.
The embodiment can be combined with an overcurrent device (not shown in the figure), the structure of the overcurrent device is the prior art, the overcurrent device and the self-closing valve are connected in series on a gas pipeline during use, when gas overflows, the overcurrent device self-closes, the gas source is cut off, the under-pressure state occurs in the self-closing valve cavity, and the gas source is closed and cut off.
The "left", "right", "up" and "down" of this embodiment are based on the directions shown in fig. 1.
It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but the present utility model is described in detail with reference to the foregoing embodiment, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. A cam type gas pipeline self-closing valve is characterized in that: the self-closing control device comprises a valve body provided with an inner cavity, a transmission sealing assembly for enabling the inner cavity of the valve body to be opened and closed with gas, a pushing block for enabling the transmission sealing assembly to act, and a self-closing control assembly for enabling the pushing block to move along the vertical direction of gas circulation under the action of external force or gas pressure floating; one end of the valve body is an air inlet, and the other end is an air outlet;
the transmission sealing assembly comprises a cam, a first connecting rod, a second connecting rod, a valve rod arranged along the gas circulation direction and a sealing block for sealing an air inlet of the valve body; the cam is rotationally connected in the inner cavity of the valve body, one end of the first connecting rod is eccentrically hinged on the cam, and the other end of the first connecting rod is hinged with the valve rod; one end of the second connecting rod is eccentrically hinged on the cam, and the other end of the second connecting rod is hinged with the pushing block; the sealing block is fixedly arranged at one end of the valve rod, which is not hinged with the first connecting rod, so that the movement of the pushing block can drive the sealing block on the valve rod to seal or conduct the air inlet of the valve body.
2. The cam type gas pipeline self-closing valve according to claim 1, wherein: an upper boss and a lower boss are arranged in the inner cavity of the valve body, a gap is formed between the upper boss and the lower boss, and a valve rod is connected in the gap in a sliding manner; the upper boss is provided with a channel for circulating gas.
3. A cam type gas pipeline self-closing valve according to claim 1 or 2, characterized in that: the sealing block is made of rubber.
4. A cam type gas pipeline self-closing valve according to claim 3, wherein: and a switch device for manually switching the valve is arranged on the air outlet of the valve body.
5. A cam gas duct self-closing valve according to any one of claims 1, 2, 4, characterized in that: the self-closing regulating and controlling assembly comprises a lifting button assembly, a leather membrane assembly and a magnetic attraction assembly;
the lifting button assembly comprises a lifting button seat fixedly arranged on the valve body and provided with an inner cavity, a lifting button arranged on the lifting button seat and a lifting pull rod fixedly arranged on the lifting button;
the diaphragm assembly divides the inner cavity of the valve body and the inner cavity of the lifting button seat into two parts which are not communicated with each other, and the lifting pull rod penetrates through the diaphragm assembly, extends to the inner cavity of the valve body and is fixedly connected with the diaphragm assembly;
the magnetic assembly comprises an upper armature, a lower armature and a magnet, wherein the upper armature is fixedly arranged at one end of the lifting rod, which is arranged in the inner cavity of the valve body, the lower armature is fixedly arranged in the inner cavity of the valve body, the magnet is arranged between the upper armature and the lower armature, and the push block penetrates through the lower armature to be fixedly connected with the magnet; the push block is provided with a shaft shoulder for limiting the ascending height of the magnet, and the shaft shoulder and the magnet are respectively arranged on two sides of the lower armature.
6. The cam type gas pipeline self-closing valve according to claim 5, wherein: the diaphragm assembly comprises a diaphragm and a diaphragm pressing sheet which are fixedly arranged in the inner cavity of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320590119.3U CN220168652U (en) | 2023-03-23 | 2023-03-23 | Cam type gas pipeline self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320590119.3U CN220168652U (en) | 2023-03-23 | 2023-03-23 | Cam type gas pipeline self-closing valve |
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| Publication Number | Publication Date |
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| CN220168652U true CN220168652U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320590119.3U Active CN220168652U (en) | 2023-03-23 | 2023-03-23 | Cam type gas pipeline self-closing valve |
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| CN (1) | CN220168652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781001A (en) * | 2024-02-26 | 2024-03-29 | 西安友谊燃气设备有限公司 | Leakage-proof gas timing self-closing valve |
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2023
- 2023-03-23 CN CN202320590119.3U patent/CN220168652U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781001A (en) * | 2024-02-26 | 2024-03-29 | 西安友谊燃气设备有限公司 | Leakage-proof gas timing self-closing valve |
| CN117781001B (en) * | 2024-02-26 | 2024-04-30 | 西安友谊燃气设备有限公司 | Leakage-proof gas timing self-closing valve |
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