CN220168654U - Gear rack type gas pipeline self-closing valve - Google Patents
Gear rack type gas pipeline self-closing valve Download PDFInfo
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- CN220168654U CN220168654U CN202320642985.2U CN202320642985U CN220168654U CN 220168654 U CN220168654 U CN 220168654U CN 202320642985 U CN202320642985 U CN 202320642985U CN 220168654 U CN220168654 U CN 220168654U
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- 238000007789 sealing Methods 0.000 claims abstract description 64
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000009423 ventilation Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 69
- 230000033001 locomotion Effects 0.000 description 12
- 239000002737 fuel gas Substances 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a rack and pinion type gas pipeline self-closing valve, which belongs to the field of gas valves, and comprises a transmission sealing assembly for making the inner cavity of a valve body on-off, a sliding block for making the transmission sealing assembly act, and an action assembly for making the sliding block move perpendicular to the direction of the gas pipeline under the action of external force or in the state that the gas pressure in the inner cavity of the gas pipeline is smaller than or larger than a set value; the transmission sealing assembly comprises a valve rod which reciprocates along the direction of the gas pipeline, a sealing block is fixedly arranged on the valve rod, a gear is rotationally arranged between the sliding block and the valve rod, a rack which is matched with the gear is arranged on the sliding block, a connecting shaft which is perpendicular to the circumference of the gear is fixedly arranged on the gear, and a connecting track which is matched with the connecting shaft is formed on the valve rod. The utility model has more stable transmission, simplifies the structure in the valve body, reduces the production cost, has higher precision, and is suitable for all gas pipelines needing to be provided with the self-closing valve.
Description
Technical Field
The utility model belongs to the field of gas valves, and relates to a self-closing valve, in particular to a rack and pinion type gas pipeline self-closing valve.
Background
Along with the popularization of the fuel gas, potential safety hazards caused by the fuel gas also become problems to be considered, and factors influencing the safety of the fuel gas mainly include overpressure, undervoltage and overcurrent of the fuel gas. In the related art, in order to improve the safety of gas use, a self-closing valve and an overcurrent device are usually arranged on a gas pipeline, when the gas is overcurrent, the overcurrent device is self-closed, and when the gas is over-pressurized and under-pressurized, the self-closing valve is closed through an internal transmission structure of the self-closing valve, and an air source is cut off, so that the safety is ensured.
The common self-closing valve comprises a transmission sealing assembly for making the inner cavity of the valve body open and close to gas and an action assembly for making the transmission sealing assembly act under the action of external force or under the overpressure, under-pressure and over-current states of the inner cavity of the gas pipeline. The action assembly comprises a diaphragm assembly for dividing the interior of the valve body into an upper valve body and a lower valve body, and an air inlet and an air outlet of the valve body are communicated with the lower valve body. The top end of the upper valve body is provided with a lifting button, the lower end of the lifting button is connected with a lifting pull rod penetrating through the diaphragm assembly to the inside of the lower valve body, and the lower end of the lifting pull rod is fixedly provided with an upper armature; the lower valve body is internally provided with a lower armature parallel to the upper armature, a magnet used for adsorbing the upper armature and the lower armature is arranged between the upper armature and the lower armature, the lower end of the magnet is fixedly provided with a sliding block penetrating through the lower armature, and the lower end of the sliding block is connected with a transmission sealing assembly. When the gas pipeline sealing device is used, the magnet can be attracted to the upper armature or the lower armature through the deformation of the diaphragm assembly caused by the lifting buttons or the change of air flow, so that the magnet moves up and down, the up-and-down movement of the magnet drives the sliding block at the lower end of the magnet to move up and down, the up-and-down movement of the sliding block is transmitted to the transmission sealing assembly, and finally the gas pipeline sealing or the conduction is realized through the transmission sealing assembly.
The structure of the transmission sealing assembly in the self-closing valve is often complex, such as a gear-rack transmission assembly and a gas self-closing valve disclosed in Chinese patent 201911237922.3, the transmission sealing assembly converts the up-down motion of a sliding block into the left-right motion of a valve rod through a gear rack and a cam, and finally realizes the sealing or conduction of a gas pipeline through a spring, a sealing block and other structures, but the cam structure is in line contact between surfaces, the structure lacks stability, and the structure for sealing and conducting the gas pipeline is too complex, and the complex internal structure has higher requirements on processing precision, not only improves the cost, but also is relatively unstable in transmission, in addition, because the internal structure is complex, more space is occupied, the resistance of gas flowing in a cavity is increased, and the corresponding precision is also reduced.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide the rack and pinion type gas pipeline self-closing valve so as to achieve the purposes of simplifying an internal transmission structure, reducing cost and improving stability and precision.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the rack and pinion type gas pipeline self-closing valve comprises a valve body, a transmission sealing assembly, a sliding block and an action assembly, wherein the valve body is communicated with a gas pipeline, the transmission sealing assembly is used for enabling gas to be on-off in the inner cavity of the valve body, the sliding block is arranged in the inner cavity of the valve body and used for enabling the transmission sealing assembly to act, and the action assembly is used for enabling the sliding block to move perpendicular to the direction of the gas pipeline under the action of external force or in the state that the gas pressure in the inner cavity of the gas pipeline is smaller than or larger than a set value; the transmission sealing assembly comprises a valve rod which is arranged in the inner cavity of the valve body and reciprocates along the direction of the gas pipeline, and a sealing block which is adapted to the inner cavity of the valve body is fixedly arranged on the valve rod, so that the sealing block seals or conducts the gas pipeline when the valve rod reciprocates along the direction of the gas pipeline; the novel valve is characterized in that a gear is rotationally arranged between the sliding block and the valve rod, a rack matched with the gear is arranged on the sliding block, a connecting shaft perpendicular to the circumference of the gear is fixedly arranged on the gear, and a connecting track matched with the connecting shaft is formed on the valve rod.
As a limitation of the present utility model: a connecting plate perpendicular to the axial direction of the gear is fixedly arranged on one side of the gear, one side of the connecting plate provided with the gear is contacted with the rack, and the connecting shaft is fixedly arranged on the connecting plate; one side of the connecting plate, which is provided with a connecting shaft, is contacted with the connecting track.
As a limitation of the present utility model: the connecting track is a rectangular track which is arranged at the end part of the valve rod and is perpendicular to the direction of the gas pipeline.
As a limitation of the present utility model: the inner cavity of the valve body is provided with a valve rod channel which is matched with the valve rod in size, and the valve rod channel is provided with a valve body ventilation groove which is arranged along the direction of the gas pipeline.
As a limitation of the present utility model: the sealing block is fixedly arranged at the end part of the valve rod, a narrow opening matched with the sealing block is formed in the inner cavity of the valve body, an air ventilation block matched with the narrow opening in size is fixedly arranged on the valve rod, and an air vent along the length direction of the valve rod is formed in the air ventilation block.
As a limitation of the present utility model: the action assembly comprises a diaphragm assembly which deforms when pressure changes, the diaphragm assembly divides the interior of the valve body into an upper valve body and a lower valve body which is communicated with a gas pipeline, a lifting button is arranged at one end, far away from the ground, of the upper valve body, a lifting rod which penetrates through the diaphragm assembly to the interior of the lower valve body in a sealing mode is connected at one end, close to the ground, of the lifting button, an upper armature is fixedly arranged at the lower end of the lifting rod, a lower armature which is parallel to the upper armature is fixedly arranged inside the lower valve body, a magnet which is used for movably absorbing the upper armature and the lower armature is arranged between the upper armature and the lower armature, the magnet is fixedly arranged on a connecting block which penetrates through the lower armature, and the slider is fixedly arranged at the other end of the connecting block and limits the connecting block.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
the transmission sealing assembly adopts the gear and rack transmission of the connecting shaft and the connecting track, so that the movement of the connecting shaft is limited in the connecting track, and compared with a cam type line contact transmission mode, the transmission sealing assembly has the advantages of larger contact area and more stable transmission; besides, a connecting plate is arranged on one side of the gear, the connecting plate is in surface contact with connecting tracks on the rack and the valve rod besides the connecting shaft is arranged on the gear, the transmission is further stable through a simple structure, and the connecting plate is of a plate structure and cannot generate resistance to gas passing; in addition, the valve rod and the inner cavity directly drive the sealing block to form sealing through the valve rod, so that the structure is simpler, fewer parts are used, the production cost is reduced, and the structure in the valve body is simplified; and the valve rod is also provided with an air ventilation block, so that the contact between the valve rod and the inside of the valve body is converted into the contact between the air ventilation block and the inside of the valve body, and the contact sectional area is reduced, so that the sectional area of the gas channel is increased, and the precision of the self-closing valve is improved.
In summary, the utility model has more stable transmission, simplifies the structure inside the valve body, reduces the production cost, has higher precision, and is suitable for all gas pipelines needing to be provided with the self-closing valve.
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 diagram of an embodiment of a conductive state structure;
FIG. 2 is a schematic view of a closed state according to an embodiment of the present utility model;
fig. 3 is a perspective view of a drive seal assembly in accordance with an embodiment of the present utility model.
In the figure: the valve comprises a 1-upper valve body, a 2-lower valve body, a 3-diaphragm assembly, a 31-diaphragm, a 32-diaphragm pressing sheet, a 4-air inlet, a 5-air outlet, a 6-lifting button, a 7-lifting pull rod, an 8-upper armature, a 9-lower armature, a 10-magnet, an 11-connecting block, a 12-slider, a 13-transmission sealing assembly, a 131-valve rod, a 132-sealing block, a 133-ventilation block, a 134-ventilation port, a 135-gear, a 136-rack, a 137-connecting plate, a 138-connecting shaft, a 139-connecting rail, a 14-narrow opening, a 15-valve body ventilation groove and a 16-air outlet switch valve.
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 rack and pinion gas conduit self-closing valve described herein is a preferred embodiment and is provided for illustration and explanation of the present utility model only and is not meant as a limitation of the present utility model.
The terms or positional relationships of "upper", "lower", "left", "right" and the like in the present utility model are based on the positional relationships of fig. 1 and 2 of the drawings in the present specification, and are merely for convenience of describing the present utility model and simplifying the description, and are not intended to indicate or imply that the apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the protection of the present utility model.
Embodiment is rack and pinion formula gas pipeline self-closing valve
The embodiment is shown in fig. 1 to 3, and is a rack-and-pinion type gas pipeline self-closing valve, which comprises a valve body with an inner cavity communicated with a gas pipeline, a transmission sealing assembly 13 for making the inner cavity of the valve body open and close gas, a sliding block 12 arranged in the inner cavity of the valve body and used for enabling the transmission sealing assembly 13 to act, and an action assembly used for enabling the sliding block 12 to move perpendicular to the direction of the gas pipeline under the action of external force or under the condition that the gas pressure in the inner cavity of the gas pipeline is smaller than or larger than a set value.
The action assembly comprises a diaphragm assembly 3 dividing the interior of the valve body into an upper valve body 1 and a lower valve body 2, wherein the diaphragm assembly 3 comprises a diaphragm 31 and a diaphragm pressing sheet 32 which are horizontally arranged, the diaphragm 31 is arranged between the upper valve body 1 and the lower valve body 2 in a sealing way, and the lower valve body 2 is communicated with a gas pipeline through an air inlet 4 and an air outlet 5. The upper valve body 1 is far away from ground one end, namely, the top end of the upper valve body 1 is provided with a movable lifting button 6, one side, close to the ground one end, of the lifting button 6, namely, positioned in the upper valve body 1 is connected with a lifting rod 7 which penetrates through the diaphragm assembly 3 to the interior of the lower valve body 2 in a sealing manner, and the lower end of the lifting rod 7 is fixedly provided with an upper armature 8 which is horizontally arranged. The lower valve body 2 is internally provided with a lower armature 9 which is parallel to the upper armature 8, a magnet 10 which can absorb the upper armature 9 and the lower armature 9 in a movable way in the vertical direction is arranged between the upper armature 9 and the lower armature 9, the magnet 10 moves upwards to absorb the upper armature 8, the magnet 10 moves downwards to absorb the lower armature 9, the magnet 10 is fixedly arranged on a connecting block 11 which penetrates through the lower armature 9, the connecting block 11 is not provided with magnetism, the other end (lower end) of the connecting block 11 is integrally provided with a sliding block 12, when an external force acts on a lifting button 6 or the air pressure in a cavity of the lower valve body 2 is smaller than or larger than a set value, the magnet 10 moves between the upper armature 8 and the lower armature 9 in the vertical direction, namely in a direction perpendicular to a gas pipeline, and then drives the connecting block 11 and the sliding block 12 to move in the vertical direction, and the dimension of the sliding block 12 in the horizontal direction is larger than that of the connecting block 11 in the horizontal direction, so that when the connecting block 11 and the magnet 10 move upwards, the sliding block 12 can play a limiting role in the movement of the connecting block 11 and the magnet 10. The diaphragm assembly 3, the lifting button 6, the lifting rod 7, the upper armature 8, the lower armature 9 and the magnet 10 are all of the prior art.
Under the action of external force or in the state that the gas pressure in the inner cavity of the gas pipeline is smaller than or larger than a set value, the action assembly enables the sliding block 12 to move along the vertical direction, namely, the direction vertical to the gas pipeline. The slide block 12 further drives the transmission sealing component 13 to act, so that the sealing or the conduction of the gas pipeline is realized. In this embodiment, the transmission sealing assembly 13 includes a valve rod 131 disposed in the valve body cavity and reciprocating along the direction of the gas pipeline, and a sealing block 132 adapted to the valve body cavity is fixedly disposed on the valve rod 131, so that when the valve rod 131 reciprocates along the direction of the gas pipeline, the sealing block 132 seals or conducts the gas pipeline. The size of the valve rod 131 is adapted to the size of the inner cavity of the lower valve body 2, so that when the sealing block 132 is opened, the fuel gas can pass through the lower valve body 2 provided with the valve rod 131. Further, in this embodiment, the left side is the gas inlet 4, the right side is the gas outlet 5, the gas inlet 4 and the gas outlet 5 are parallel and communicated with the gas pipeline, the sealing block 132 is a cylindrical rubber block fixed at the left end of the valve rod 131, the shaft of the sealing block 132 is arranged along the horizontal direction, the right side of the sealing block 132 is arranged in the inner cavity, the inner diameter is narrowed, a circular narrow opening 14 matched with the sealing block 132 is formed, the size of the narrow opening 14 is smaller than the size of the sealing block 132 and is larger than the size of the valve rod 131, when the sealing block 132 moves leftwards, a channel for allowing the gas to pass is formed between the narrow opening 14 and the sealing block 132, at this time, in the conducting state, when the sealing block 132 moves rightwards, the narrow opening 14 is smaller than the size of the sealing block 132, the sealing block 132 completely covers the narrow opening 14, and at this time, the sealing state is achieved. In order to make the movement of the valve rod 131 more stable, a vent block 133 matching the size of the slit 14 is integrally formed on the valve rod 131, wherein the matching means that the shape and the size of the vent block 133 are matched with the slit 14, that is, the vent block 133 is in a cylinder shape with the size slightly smaller than the inner diameter of the slit 14, so that the vent block 133 can be slidably arranged in the slit 14, in order to ensure that the gas can smoothly pass through, the periphery of the outer edge of the vent block 133 is uniformly provided with vent ports 134 along the length direction of the valve rod 131, and in the embodiment, the vent ports 134 are concave arc-shaped ports formed on the wall of the vent block 133.
Between valve rod 131 and slider 12, rotate and be provided with gear 135, slider 12 lower extreme has fixed with gear 135 looks adaptation, along the rack 136 of vertical setting, the cross-section of rack 136 is the rectangle, the tooth of rack 136 is close to one of them terminal surface setting, one side of gear 135 has set firmly the connecting plate 137 perpendicular to gear 135 axial, one side of connecting plate 137 and gear 136 contact, namely connecting plate 137 contacts the corresponding terminal surface of setting tooth on rack 136, connecting plate 137 has set firmly the connecting axle 138 perpendicular to gear 135 circumference, namely along gear 135 axial, the right-hand member of valve rod 131 is formed with the rectangular track of connecting axle 138 looks adaptation, connecting track 139 is perpendicular to gas pipeline direction's rectangle track in this embodiment, connecting track 139 corresponding terminal surface also contacts with connecting plate 137, when slider 12 is perpendicular to gas pipeline direction namely along vertical direction reciprocating motion, rack 136 also reciprocates along vertical direction, drive gear 135 and connecting axle 138 rotate, the rotation of connecting axle 138 makes it take place the displacement in connecting track 139, and then drive valve rod 131 along gas pipeline direction that is along the horizontal direction reciprocating motion promptly. In this embodiment, when the slider 12 moves upward, the rack 136 moves upward, drives the gear 135 to rotate counterclockwise, so that the connecting shaft 138 moves downward and leftward, the connecting shaft 138 moves downward in the connecting track 139 and drives the valve rod 131 to move leftward, at this time, the self-closing valve is in a conducting state, when the slider 12 moves downward, the rack 136 moves downward, drives the gear 135 to rotate clockwise, so that the connecting shaft 138 moves upward and rightward, the connecting shaft 138 moves upward in the connecting track 139 and drives the valve rod 131 to move rightward, and at this time, the self-closing valve is in a sealing state.
In order to smoothly pass the gas, a passage for allowing the gas flow to pass therethrough while guiding the valve stem 131 is formed in the inner cavity of the lower valve body 2, specifically, a valve stem 131 passage having a size matching that of the valve stem 131 is formed in the inner cavity of the lower valve body 2, and a valve body vent groove 15 is formed in a portion where the valve stem 131 passage is matched with the valve body (the vent groove 15 is provided, and thus the vent groove portion is not cut in a cross section).
The gas outlet switch valve 16 is connected in series on the right side of the self-closing valve, namely on the gas pipeline at one side of the gas outlet 5, so that the manual opening and closing of the gas pipeline are realized, and the structure of the gas outlet switch valve 16 is the prior art.
As shown in fig. 1, when the present embodiment works normally, after the pipe is ventilated, the lifting button 6 is lifted under the action of manpower, i.e. external force, to drive the lifting rod 7 to move upwards, because the magnet 10 and the upper armature 8 attract each other at this time, the magnet 10 follows the lifting rod 7 to move upwards under the drive of the upper armature 8, so as to drive the slider 12 to move upwards, the gear 135 rotates anticlockwise, the valve rod 131 moves leftwards, and the self-closing valve is conducted, so that the valve is in a normal working state.
As shown in fig. 2, when the embodiment is in the under-pressure valve closing state, the ventilation pressure of the self-closing valve is smaller than the set value, the upward buoyancy of the fuel gas is smaller than the attraction force of the lower armature 9 and the magnet 10 and the downward combined force of the gravity of the whole assembly of the sliding block 12 and the lifting rod 7, the whole motion assembly drives the sliding block 12 to move downwards, the gear 135 rotates clockwise, the valve rod 131 moves rightwards, the sealing block 132 moves rightwards to be tightly attached to the narrow opening 14 of the inner cavity of the lower valve body 2, the circulation of the fuel gas is blocked, the under-pressure automatic closing of the embodiment is realized, and the air source is cut off.
As shown in fig. 2, when the embodiment is in the state of closing the valve by overpressure, the ventilation pressure of the self-closing valve is greater than the set value, the diaphragm assembly 3 drives the lifting rod 7 to generate upward movement trend, the gas buoyancy force and upward force of the diaphragm assembly 3 are greater than the attraction force of the lower armature 9 and the magnet 10 and the downward resultant force of the gravity of the whole assembly of the sliding block 12 and the lifting rod 7, the magnet 10 drives the sliding block 12 to generate upward movement trend, the lower armature 9 generates downward force on the sliding block 12 due to the limit action of the sliding block 12 on the lower armature 9, the magnet 10 is separated from the upper armature 8 under the downward force, the lower armature 9 is adsorbed, the sliding block 12 moves downward, the gear 135 rotates clockwise, the valve rod 131 moves rightward, the sealing block 132 moves rightward tightly and is tightly attached to the narrow opening 14 of the inner cavity of the lower valve body 2, the overpressure automatic closing of the embodiment 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 is self-closed, the self-closing valve body is under-pressure to realize closing, and the gas source is cut off.
Claims (6)
1. A rack and pinion formula gas pipeline self-closing valve, its characterized in that: the device comprises a valve body, a transmission sealing assembly, a sliding block, an action assembly and a control unit, wherein the valve body is communicated with a gas pipeline, the transmission sealing assembly is used for enabling the gas in the inner cavity of the valve body to be switched on and off, the sliding block is arranged in the inner cavity of the valve body and used for enabling the transmission sealing assembly to act, and the action assembly is used for enabling the sliding block to move perpendicular to the direction of the gas pipeline under the action of external force or in the state that the gas pressure in the inner cavity of the gas pipeline is smaller than or larger than a set value;
the transmission sealing assembly comprises a valve rod which is arranged in the inner cavity of the valve body and reciprocates along the direction of the gas pipeline, and a sealing block which is adapted to the inner cavity of the valve body is fixedly arranged on the valve rod, so that the sealing block seals or conducts the gas pipeline when the valve rod reciprocates along the direction of the gas pipeline; the novel valve is characterized in that a gear is rotationally arranged between the sliding block and the valve rod, a rack matched with the gear is arranged on the sliding block, a connecting shaft perpendicular to the circumference of the gear is fixedly arranged on the gear, and a connecting track matched with the connecting shaft is formed on the valve rod.
2. The rack and pinion gas pipeline self-closing valve as recited in claim 1, wherein: a connecting plate perpendicular to the axial direction of the gear is fixedly arranged on one side of the gear, one side of the connecting plate provided with the gear is contacted with the rack, and the connecting shaft is fixedly arranged on the connecting plate; one side of the connecting plate, which is provided with a connecting shaft, is contacted with the connecting track.
3. The rack and pinion gas pipeline self-closing valve as recited in claim 2, wherein: the connecting track is a rectangular track which is arranged at the end part of the valve rod and is perpendicular to the direction of the gas pipeline.
4. The rack and pinion gas pipeline self-closing valve as recited in claim 1, wherein: the inner cavity of the valve body is provided with a valve rod channel which is matched with the valve rod in size, and the valve rod channel is provided with a valve body ventilation groove which is arranged along the direction of the gas pipeline.
5. The rack and pinion gas pipeline self-closing valve as recited in claim 4, wherein: the sealing block is fixedly arranged at the end part of the valve rod, a narrow opening matched with the sealing block is formed in the inner cavity of the valve body, an air ventilation block matched with the narrow opening in size is fixedly arranged on the valve rod, and an air vent along the length direction of the valve rod is formed in the air ventilation block.
6. A rack and pinion gas conduit self-closing valve in accordance with any one of claims 1 to 5, wherein: the action assembly comprises a diaphragm assembly which deforms when pressure changes, the diaphragm assembly divides the interior of the valve body into an upper valve body and a lower valve body which is communicated with a gas pipeline, a lifting button is arranged at one end, far away from the ground, of the upper valve body, a lifting rod which penetrates through the diaphragm assembly to the interior of the lower valve body in a sealing mode is connected at one end, close to the ground, of the lifting button, an upper armature is fixedly arranged at the lower end of the lifting rod, a lower armature which is parallel to the upper armature is fixedly arranged inside the lower valve body, a magnet which is used for movably absorbing the upper armature and the lower armature is arranged between the upper armature and the lower armature, the magnet is fixedly arranged on a connecting block which penetrates through the lower armature, and the slider is fixedly arranged at the other end of the connecting block and limits the connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642985.2U CN220168654U (en) | 2023-03-29 | 2023-03-29 | Gear rack type gas pipeline self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642985.2U CN220168654U (en) | 2023-03-29 | 2023-03-29 | Gear rack type gas pipeline self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220168654U true CN220168654U (en) | 2023-12-12 |
Family
ID=89054943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320642985.2U Active CN220168654U (en) | 2023-03-29 | 2023-03-29 | Gear rack type gas pipeline self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220168654U (en) |
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2023
- 2023-03-29 CN CN202320642985.2U patent/CN220168654U/en active Active
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