CN220435503U - Self-closing valve suitable for carbon dioxide gas cylinder - Google Patents
Self-closing valve suitable for carbon dioxide gas cylinder Download PDFInfo
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- CN220435503U CN220435503U CN202321557914.9U CN202321557914U CN220435503U CN 220435503 U CN220435503 U CN 220435503U CN 202321557914 U CN202321557914 U CN 202321557914U CN 220435503 U CN220435503 U CN 220435503U
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- gas cylinder
- channel
- plunger
- cavity
- carbon dioxide
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 23
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- -1 carbon dioxide aluminum Chemical compound 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to a self-closing valve suitable for a carbon dioxide gas cylinder, which comprises a gas cylinder valve body, an upper valve cover body, a plunger and an explosion-proof assembly, wherein the upper part of the gas cylinder valve body is provided with a cavity for accommodating the upper valve cover body, the lower end of the gas cylinder valve body is provided with a connecting part, and an axial gas flow passage communicated with the upper cavity is arranged in the connecting part; the upper valve cover body is covered at the upper end of the gas cylinder valve body, an axial channel is arranged in the upper valve cover body, and an external port, a circulation groove, a conduction port and a circulation port form a communicated passage; the plunger is movably sleeved in the channel and comprises an abutting boss positioned in the middle of the plunger and a plunger valve core positioned at the lower part of the plunger, and a spring is sleeved on the plunger valve core; one end of the spring is abutted against the abutting boss, and the other end of the spring is abutted against the inner cavity wall of the gas cylinder valve body.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a self-closing valve suitable for a carbon dioxide gas cylinder.
Background
The carbon dioxide aluminum bottle valve is applied to the soda machine at present, the carbon dioxide aluminum bottle valve is usually installed in two ways during installation, the first is installed in a threaded connection mode, the conditions that threaded fit is too tight, installation is not in place and the like are easy to exist, the upper end face of the carbon dioxide aluminum bottle valve is directly propped against the inner sealing face of the soda machine, when the soda machine is used, a push rod of the carbon dioxide aluminum bottle valve can be driven to move downwards after a switch of the soda machine is pressed down, so that a piston is propped up, and because the existing carbon dioxide aluminum bottle valve is used for discharging air from the top of the soda machine, a reaction force is given to the carbon dioxide aluminum bottle valve, the upper end face of the carbon dioxide aluminum bottle valve is easily separated from the inner sealing face of the soda machine, air leakage is easily caused, and the carbon dioxide aluminum bottle valve is easily loosened.
Disclosure of Invention
1. Technical problem to be solved
The utility model aims at the defects existing in the prior art, and particularly provides a self-closing valve suitable for a carbon dioxide gas cylinder, through a circulation port arranged on an inner channel of an upper valve cover body, through a communication port and a circulation groove arranged on an outer ring thread, the communication between the circulation port and the communication port and an external port can be realized, gas is prevented from flowing out from the top of the upper valve cover body channel, leakage is prevented, only a plunger is required to be loosened when the self-closing valve is used, and a plunger valve core can be separated from a gas flow channel under the action of the elasticity of a spring to release the gas.
2. Technical proposal
In order to solve the technical problems, the utility model provides a self-closing valve suitable for a carbon dioxide gas cylinder, which comprises a gas cylinder valve body, an upper valve cover body, a plunger and an explosion-proof assembly, wherein the upper part of the gas cylinder valve body is provided with a cavity for accommodating the upper valve cover body, the side wall of the cavity is provided with at least one external port communicated with the outside, the lower end of the gas cylinder valve body is provided with a connecting part, and the inside of the connecting part is provided with an axial gas flow passage communicated with the cavity at the upper part;
the upper valve cover body cover is arranged at the upper end of the gas cylinder valve body, an axial channel is arranged in the upper valve cover body, at least one circulating port communicated with the channel is formed in the side wall of the channel, an annular circulating groove is further formed in the outer wall of the upper valve cover body, a conducting port is formed between the circulating groove and the circulating port, a circulating groove is formed above the conducting port, the circulating groove corresponds to the position of the external port, and the external port, the circulating groove, the conducting port and the circulating port form a communicated passage;
the plunger is movably sleeved in the channel and comprises an abutting boss positioned in the middle of the plunger and a plunger valve core positioned at the lower part of the plunger, and a spring is sleeved on the plunger valve core;
one end of the spring is abutted with the abutting boss, and the other end of the spring is abutted with the inner cavity wall of the gas cylinder valve body;
the explosion-proof component is arranged on the side wall of the gas cylinder valve body.
The upper valve cover body is matched and installed with the inner ring thread of the cavity at the upper part of the gas cylinder valve body through the outer ring thread, a first sealing ring is arranged below the outer ring thread of the upper valve cover body, and a second sealing ring is arranged on the plunger.
Wherein the outer ports are arranged in a radial direction and the outer ports are provided with 2 or 4,
when the number of the external ports is 2, the 2 external ports are symmetrically arranged on the same straight line,
when the external ports are provided with 4, the 4 external ports are uniformly distributed around the axis of the gas cylinder valve body at intervals of 90 degrees.
Wherein, gas cylinder valve body upper portion is equipped with first cavity and second cavity, and first cavity setting is in the top of gas runner, and the second cavity setting is in first cavity top, and the spring is installed in the second cavity, and spring one end and the butt boss below butt of plunger, the other end and first cavity bottom butt.
Wherein, first cavity inside wall is provided with first passageway, and gas cylinder valve body lateral wall is provided with the second passageway, and first the leading communicates with each other with the second passageway, and explosion-proof subassembly includes packing ring, explosion-proof dish and explosion-proof stopper, and the packing ring setting is in second passageway mouth department, and explosion-proof dish presses on the packing ring, and explosion-proof stopper passes through the screw thread to be installed in the second passageway, is provided with the air outlet on the explosion-proof stopper.
Wherein, the gas cylinder valve body lateral wall symmetry is provided with auxiliary mounting face.
The connecting part is connected with the aluminum bottle through threads, an auxiliary channel is arranged on the side wall of the connecting part, and the auxiliary channel is communicated with the gas flow channel.
The third sealing ring is arranged above the abutting boss and can abut against the bottom of the channel under the action of the elasticity of the spring to realize sealing, so that the communication between the gas flow channel and the circulation port is blocked;
when a certain pressure is applied to the plunger, the plunger is further compressed against the elasticity of the spring, and the third sealing ring is separated from contact with the bottom of the channel, so that the gas flow channel is communicated with the circulation port.
Wherein, be provided with the fixed plate on the connecting portion, the fixed plate inboard is provided with the fourth sealing washer.
3. Advantageous effects
Compared with the prior art, after the opening and closing valve is installed on the gas storage bottle, the corresponding interface is only required to be abutted against the plunger when the opening and closing valve is used, so that the plunger is pressed tightly, the elastic force of the spring is overcome, the third sealing ring is separated from contact with the bottom of the channel, and the gas flow channel is communicated with the flow opening, so that the gas flows out, the whole valve is simple and convenient to use, the plunger integrated structure is arranged, the whole structure is simpler to assemble, and the product reliability is higher.
The setting through a plurality of sealing washer can effectively guarantee the gas tightness everywhere, also can prevent that gas from flowing out from the passageway top and cause leaking, through setting up explosion-proof component, when first cavity internal pressure is too big, gas can follow the air outlet of explosion-proof stopper outwards flow after explosion-proof disk breaks, prevents that pressure from too big explosion from taking place, causes the potential safety hazard.
Drawings
Fig. 1 is a schematic perspective view of a self-closing valve suitable for a carbon dioxide cylinder.
Fig. 2 is a perspective exploded structural view of a self-closing valve suitable for a carbon dioxide cylinder.
FIG. 3 is a cross-sectional view of a cylinder valve body of a self-closing valve suitable for use with a carbon dioxide cylinder.
Fig. 4 is a schematic perspective view of an upper valve cover body of a self-closing valve suitable for a carbon dioxide gas cylinder.
Fig. 5 is a schematic diagram of a connection structure between a plunger and a plunger valve core of a self-closing valve suitable for a carbon dioxide gas cylinder.
Fig. 6 is a schematic perspective view of an explosive assembly suitable for a self-closing valve of a carbon dioxide cylinder.
Fig. 7 is a cross-sectional view of the whole structure of a self-closing valve suitable for a carbon dioxide cylinder.
In the figure:
1 is a gas cylinder valve body; 11 is an inner ring thread; 111 is an external port; 12 is a connecting part; 121 is a gas flow path; 122 is an auxiliary channel; 13 is a first cavity; 131 is a first channel; 14 is a second cavity; 15 is a second channel; 16 is an auxiliary mounting surface;
2 is an upper valve cover body; 21 is an outer ring thread; 211 is a conducting port; 2111 is a flow-through tank; 22 is a channel; 221 is a flow port; 23 is a first seal ring;
3 is a plunger; 31 is a second seal ring;
4 is a plunger valve core; 41 is a spring; 42 is an abutment boss; 421 is a third seal ring;
5 is a gasket; 6 is an explosion-proof disc;
7 is an explosion-proof plug; 71 is an air outlet;
8 is a fixed plate; and 81 is a fourth sealing ring.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
Example 1:
as shown in fig. 1 to 7, the self-closing valve applicable to a carbon dioxide gas cylinder of the present embodiment comprises a gas cylinder valve body 1, an upper valve cover body 2, a plunger 3 and an explosion-proof component, wherein a cavity for accommodating the upper valve cover body 2 is arranged at the upper part of the gas cylinder valve body 1, at least one external port 111 communicated with the outside is arranged on the side wall of the cavity, a connecting part 12 is arranged at the lower end of the gas cylinder valve body 1, and an axial gas flow passage 121 communicated with the upper cavity is arranged inside the connecting part 12;
the upper valve cover body 2 is covered on the upper end of the gas cylinder valve body 1, an axial channel 22 is arranged in the upper valve cover body 2, at least one circulating port 221 communicated with the channel 22 is formed in the side wall of the channel 22, an annular circulating groove 2111 is further formed in the outer wall of the upper valve cover body 2, a through hole 211 is formed between the circulating groove 2111 and the circulating port 221, the circulating groove 2111 is arranged above the through hole, the circulating groove 2111 corresponds to the position of the external port 111, the circulating groove 2111, the through hole 211 and the circulating port 221 form a communicated passage, and note that gaps exist between the circulating port 221 and the lower part of the circulating port 221 and the plunger 3 for gas to circulate, and the upper part of the circulating port 221 is sealed between the channel 22 and the plunger 3 for preventing gas from flowing out;
the plunger 3 is movably sleeved in the channel 22, the plunger 3 comprises an abutting boss 42 positioned in the middle of the plunger 3 and a plunger valve core 4 positioned at the lower part of the plunger 3, and a spring 41 is sleeved on the plunger valve core 4; one end of the spring 41 is abutted against the abutting boss 42, and the other end of the spring 41 is abutted against the inner cavity wall of the gas cylinder valve body 1; the explosion-proof component is arranged on the side wall of the gas cylinder valve body 1.
In this embodiment, the third sealing ring 421 can abut against the bottom of the channel 22 to realize sealing, so as to block the communication between the gas flow channel 121 and the flow port 221; when a certain pressure is applied to the plunger 3, the plunger is further compressed against the elastic force of the spring 41, and the third sealing ring 421 is separated from the bottom of the channel 22, so that the gas flow channel 121 is communicated with the flow port 221; specifically, when the piston is pressed, the elasticity of the spring is overcome, the third sealing ring is separated from contact with the bottom of the channel, and the gas flow channel is communicated with the circulation port, so that gas flows out, namely, the gas enters the gas cylinder valve body 1 from the gas flow channel 121, flows out through the circulation hole of the internal channel 22 of the upper valve cover body 2, flows into the circulation groove 2111 through the conduction port 211 on the outer ring thread 21, and flows through the external port 111; after the external force action to the plunger is withdrawn, the third sealing ring is in butt joint with the bottom of the channel under the action of the elastic force of the spring, so that gas leakage is prevented, and the self-closing effect is realized. By providing the flow port 221 and the through port 211, communication between the gas and the external port can be achieved, and the gas is prevented from flowing out from the top of the passage 22 of the upper body 2, and leakage is prevented.
The lower part of the outer ring thread 21 of the upper valve cover body 2 is provided with a first sealing ring 23, the plunger 3 is provided with a second sealing ring 31, and through the arrangement of the first sealing ring 23, gas is prevented from flowing into the gas cylinder valve body 1 from a gap between the upper valve cover body 2 and the gas cylinder valve body 1 to flow into the outer ring thread 21, so that the pressure of the upper valve cover body 2 is overlarge, and loosening is caused to cause leakage. By providing the second seal 31, leakage of gas from the top of the channel 22 is prevented.
As shown in fig. 4, the upper part of the gas cylinder valve body 1 is provided with a first cavity 13 and a second cavity 14, the first cavity 13 is arranged above the gas flow channel 121, the second cavity 14 is arranged above the first cavity 13, a spring 41 is installed in the second cavity 14, one end of the spring 41 is abutted with the lower part of an abutting boss 42 of the plunger 3, the other end of the spring 41 is abutted with the bottom of the first cavity 13, and by arranging the abutting boss 42, the plunger valve core 4 can be better stressed to realize the blocking of the gas flow channel 121.
As shown in fig. 3: the first cavity 13 inside wall is provided with first passageway 131, and gas cylinder valve body 1 lateral wall is provided with second passageway 15, and first the communicating with second passageway 15 that leads to, explosion-proof subassembly includes packing ring 5, explosion-proof dish 6 and explosion-proof stopper 7, and packing ring 5 sets up in second passageway 15 mouth department, and explosion-proof dish 6 presses on packing ring 5, and explosion-proof stopper 7 passes through the screw thread to be installed in second passageway 15, is provided with air outlet 71 on the explosion-proof stopper 7.
By providing an explosion-proof assembly, when the pressure in the first cavity 13 is too high, gas can flow outwards from the air outlet 71 of the explosion-proof plug 7 after the explosion-proof disc 6 is broken, so that explosion caused by too high pressure is prevented.
As shown in fig. 1: the outer side wall of the gas cylinder valve body 1 is symmetrically provided with auxiliary mounting surfaces 16, and by arranging the auxiliary mounting surfaces 16, tools such as a wrench can be conveniently used for fixing the gas cylinder valve body 1 on the carbon dioxide aluminum bottle through the connecting part 12.
As shown in fig. 3: the connection part 12 is connected with an aluminum bottle through threads, an auxiliary channel 122 is arranged on the connection part 12, and the auxiliary channel 122 is communicated with the gas flow channel 121.
By providing the auxiliary channel 122, the initial position of the thread of the connection 12 can be corresponded for measuring the seal leakage angle.
As shown in fig. 1 and 2: the connecting portion 12 is provided with a fixing plate 8, and a fourth seal ring 81 is provided below the fixing plate 8.
By providing the fixing plate 8, the gas cylinder valve body 1 can be more stably mounted on the aluminum cylinder, and leakage of gas from the connecting portion 12 is reduced by the fourth seal ring 81.
Example 2:
compared with embodiment 1, in this embodiment, the external ports 111 are arranged along the radial direction, and the number of external ports 111 is 2 or 4, when the number of external ports 111 is 2, the 2 external ports 111 are symmetrically arranged on the same straight line, when the number of external ports 111 is 4, the 4 external ports 111 are uniformly arranged around the axis of the gas cylinder valve body 1 in a ring shape at intervals of 90 degrees, so that the gas outlet efficiency of the valve is improved.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (9)
1. The self-closing valve suitable for the carbon dioxide gas cylinder is characterized by comprising a gas cylinder valve body (1), an upper valve cover body (2), a plunger (3) and an explosion-proof component, wherein a cavity for accommodating the upper valve cover body (2) is arranged at the upper part of the gas cylinder valve body (1), at least one external port (111) communicated with the outside is arranged on the side wall of the cavity, a connecting part (12) is arranged at the lower end of the gas cylinder valve body (1), and an axial gas flow channel (121) communicated with the cavity at the upper part is arranged inside the connecting part (12);
the upper valve cover body (2) is arranged at the upper end of the gas cylinder valve body (1) in a covering mode, an axial channel (22) is arranged in the upper valve cover body (2), at least one circulating port (221) communicated with the channel (22) is formed in the side wall of the channel (22), an annular circulating groove (2111) is further formed in the outer wall of the upper valve cover body (2), a communicating port (211) is formed between the circulating groove (2111) and the circulating port (221), the circulating groove (2111) is formed above the communicating port, the circulating groove (2111) corresponds to the position of the external port (111), and the external port (111), the circulating groove (2111), the communicating port (211) and the circulating port (221) form a communicated passage;
the plunger (3) is movably sleeved in the channel (22), the plunger (3) comprises an abutting boss (42) positioned in the middle of the plunger (3) and a plunger valve core (4) positioned at the lower part of the plunger (3), and a spring (41) is sleeved on the plunger valve core (4);
one end of the spring (41) is abutted with the abutting boss (42), and the other end of the spring (41) is abutted with the inner cavity wall of the gas cylinder valve body (1);
the explosion-proof component is arranged on the side wall of the gas cylinder valve body (1).
2. The self-closing valve suitable for the carbon dioxide gas cylinder according to claim 1, wherein the upper valve cover body (2) is installed in a matched mode with an inner ring thread (11) of an upper cavity of the gas cylinder valve body (1) through an outer ring thread (21), a first sealing ring (23) is arranged below the outer ring thread (21) of the upper valve cover body (2), and a second sealing ring (31) is arranged on the plunger (3).
3. A self-closing valve for a carbon dioxide cylinder according to claim 1, characterized in that the external ports (111) are arranged in radial direction and that the external ports (111) are provided with 2 or 4,
when the number of the external ports (111) is 2, the 2 external ports (111) are symmetrically arranged on the same straight line,
when the number of the external ports (111) is 4, the 4 external ports (111) are uniformly distributed around the axis of the gas cylinder valve body (1) in a ring shape at intervals of 90 degrees.
4. A self-closing valve suitable for a carbon dioxide gas cylinder according to claim 1, characterized in that the upper part of the gas cylinder valve body (1) is provided with a first cavity (13) and a second cavity (14), the first cavity (13) is arranged above a gas flow passage (121), the second cavity (14) is arranged above the first cavity (13), the spring (41) is arranged in the second cavity (14), one end of the spring (41) is abutted under an abutting boss (42) of the plunger (3), and the other end of the spring is abutted under the bottom of the first cavity (13).
5. The self-closing valve suitable for the carbon dioxide gas cylinder according to claim 4, wherein a first channel (131) is arranged on the inner side wall of the first cavity (13), a second channel (15) is arranged on the side wall of the gas cylinder valve body (1), the first channel is communicated with the second channel (15), the explosion-proof assembly comprises a gasket (5), an explosion-proof disc (6) and an explosion-proof plug (7), the gasket (5) is arranged at the opening of the second channel (15), the explosion-proof disc (6) is pressed on the gasket (5), the explosion-proof plug (7) is installed in the second channel (15) through threads, and an air outlet (71) is arranged on the explosion-proof plug (7).
6. Self-closing valve suitable for carbon dioxide gas cylinders according to claim 1, characterized in that the outer side wall of the cylinder valve body (1) is symmetrically provided with auxiliary mounting surfaces (16).
7. A self-closing valve for a carbon dioxide cylinder according to claim 1, wherein the connecting part (12) is connected with an aluminum cylinder by screw threads, an auxiliary channel (122) is arranged on the side wall of the connecting part (12), and the auxiliary channel (122) is communicated with the gas flow channel (121).
8. A self-closing valve for a carbon dioxide cylinder according to claim 1, characterized in that a third sealing ring (421) is arranged above the abutting boss (42), and under the action of the elasticity of the spring (41), the third sealing ring (421) can abut against the bottom of the channel (22) to realize sealing, thereby blocking the communication between the gas flow channel (121) and the circulation port (221);
when a certain pressure is applied to the plunger (3), the plunger is further compressed against the elastic force of the spring (41), and the third sealing ring (421) is out of contact with the bottom of the channel (22), so that the gas flow channel (121) is communicated with the circulation port (221).
9. A self-closing valve for a carbon dioxide cylinder according to claim 1, characterized in that the connecting part (12) is provided with a fixing plate (8), and the inner side of the fixing plate (8) is provided with a fourth sealing ring (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321557914.9U CN220435503U (en) | 2023-06-19 | 2023-06-19 | Self-closing valve suitable for carbon dioxide gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321557914.9U CN220435503U (en) | 2023-06-19 | 2023-06-19 | Self-closing valve suitable for carbon dioxide gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220435503U true CN220435503U (en) | 2024-02-02 |
Family
ID=89691760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321557914.9U Active CN220435503U (en) | 2023-06-19 | 2023-06-19 | Self-closing valve suitable for carbon dioxide gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220435503U (en) |
-
2023
- 2023-06-19 CN CN202321557914.9U patent/CN220435503U/en active Active
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