Combination gas valve and gas stove
By introducing check components and movable seals into the gas combination valve, the problem of easy failure of the seal ring of the check valve is solved, and the safety and reliability of the gas combination valve is improved.
Patent Information
- Application Number
- CN202421872588.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The sealing ring of the one-way valve member in existing gas combination valves is prone to failure, resulting in gas leakage and increasing safety risks.
A gas combination valve including three-way pipe fittings, a check valve member and a check assembly is designed. Through the cooperation of the movable seal and the plug, independent control of the intake pipe and the outlet pipe is achieved to prevent gas leakage.
Effectively prevent gas leakage, improve the safety performance of gas combination valves, and achieve dual protection.
Smart Images
Figure CN223137615U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas combination valves, and particularly relates to a gas combination valve and a gas stove. Background Technique
[0002] A gas combination valve is a device for managing and controlling two gas cylinders. It usually includes two gas cylinders, a three-way pipe fitting, two one-way valve parts, a regulator, and a safety valve. The two gas cylinders are respectively connected to the two one-way valve parts, the two one-way valve parts are respectively connected to the two intake pipes of the three-way pipe fitting, the regulator is connected to the outlet pipe of the three-way pipe fitting, and the safety valve is connected to the regulator. The regulator is used to adjust the pressure of the gas, and the safety valve is used to prevent the gas pressure from exceeding the bearable limit. In this structure, the one-way valve parts are provided to prevent the gas in one gas cylinder from flowing out through the other intake pipe when one gas cylinder is disassembled. However, after long-term use, the sealing rings in the one-way valve parts are prone to failure, resulting in gas leakage in the three-way pipe fitting, thereby increasing the safety risk of the combination valve. Content of the Utility Model
[0003] The main object of the utility model is to propose a gas combination valve and a gas stove, aiming to improve the safety performance of the gas combination valve.
[0004] To achieve the above object, the gas combination valve proposed by the utility model includes a regulator and a safety valve, and the regulator is connected to the safety valve. The gas combination valve includes:
[0005] A three-way pipe fitting having two intake pipes and an outlet pipe, and the outlet pipe is connected to the regulator;
[0006] Two one-way valve parts, each one-way valve part is connected to one intake pipe, each one-way valve part is connected to a gas cylinder, and cooperates with the gas cylinder to supply gas to the intake pipe; and
[0007] A check component, the check component includes two movable seals and two plugs. Each plug is connected to the inner peripheral wall of one intake pipe. Each plug is provided with an intake hole, and the intake hole is communicated with the intake pipe. The movable seal is movably arranged at one end of the plug away from the one-way valve part along the extension direction of the intake pipe. One end of the movable seal away from the plug is elastically connected to the wall surface of the intake pipe, and can move closer to or away from the plug to close or communicate the intake pipe with the outlet pipe.
[0008] In an embodiment of the utility model, the check assembly includes two first elastic members. A first limiting step is provided on the peripheral wall surface of each intake pipeline. A second limiting step is provided at one end of each movable seal member away from the plug. Each first elastic member is located between a first limiting step and a second limiting step. A sealing column is formed at one end of each movable seal member close to the plug, and each sealing column can open or close an intake hole.
[0009] In an embodiment of the utility model, a sealing section is formed at one end of each sealing column away from the movable seal member, and the cross-sectional area of the sealing section gradually decreases from the end close to the movable seal member to the end away from the movable seal member.
[0010] In an embodiment of the utility model, the check assembly includes two air stopping blocks. Each air stopping block is sleeved on a sealing column, and the sealing section is exposed from the air stopping block. An annular sealing protrusion is formed on one side of each air stopping block facing away from the movable seal member. Each annular sealing protrusion can abut against the side wall of a plug and is arranged around the orifice edge of the intake hole.
[0011] In an embodiment of the utility model, the gas combination valve includes a joint assembly. The joint assembly includes two die-cast joints which are respectively connected to the two intake pipelines of the three-way pipe fitting. The die-cast joint is provided with an installation channel which is communicated with the intake pipeline. Each one-way valve member is connected to the installation channel of a die-cast joint.
[0012] In an embodiment of the utility model, the joint assembly includes a plurality of first sealing rings and two pins. The plurality of first sealing rings are sleeved on one end of the die-cast joint close to the intake pipeline and abut against the inner peripheral wall of the intake pipeline. A limiting ring groove is provided at one end of each die-cast joint close to the intake pipeline. The two pins are spaced and penetrate through the intake pipeline to abut against the groove wall of the limiting ring groove to limit the movement of the die-cast joint along the axial direction of the intake pipeline.
[0013] In an embodiment of the utility model, the one-way valve member includes a thimble, a floating rod and a second sealing ring. The thimble is threadedly connected to the installation channel. The thimble is provided with an intake channel which is communicated with the installation channel. The floating rod is in clearance fit with the intake channel and is elastically connected to the wall surface of the installation channel. A limiting ring block and a gas blocking block are arranged on the floating rod. The second sealing ring is sleeved on the floating rod and is located between the limiting ring block and the gas blocking block. The floating rod can move close to or away from the die-cast joint to close or open the intake channel and the installation channel.
[0014] In an embodiment of the utility model, the one-way valve member includes a gasket and a second elastic member. A limiting block is provided on the thimble. An air inlet interface is formed at one end of the die-cast joint away from the air inlet pipe. The gasket is arranged between the limiting block and the bottom wall of the air inlet interface;
[0015] A third limiting step is provided on the peripheral wall surface of the installation channel. The second elastic member is sleeved on the floating rod and is located between the third limiting step and the limiting ring block;
[0016] The cross-sectional area of the air-blocking block gradually decreases from the end close to the second sealing ring to the end far from the second sealing ring.
[0017] In an embodiment of the utility model, the safety valve includes a valve body, a control valve rod and a valve nozzle. The valve body is respectively connected to the adjuster, the control valve rod and the valve nozzle. The control valve rod is used to control the gas to spray out from the valve nozzle.
[0018] The utility model also provides a gas stove, which includes the gas combination valve described in any one of the above embodiments and a stove body. The gas combination valve is arranged on the stove body.
[0019] In the technical solution of the utility model, when a gas cylinder is connected to two one-way valve members, the gas in the gas cylinder flows into the air inlet pipe. The gas flows through the air inlet hole. Under the air flow pressure, the movable seal member moves away from the plug, so that the air inlet pipe is communicated with the air outlet pipe. Then the gas in the gas cylinder can enter the air outlet pipe through the air inlet pipe and flow out from the air outlet pipe; when the gas in one of the gas cylinders is used up, the movable seal member has no air flow pressure to push it. Under the action of the elastic restoring force, the movable seal member moves close to the plug, so that the air inlet pipe and the air outlet pipe are closed; this structural setting can realize the independent control of the gas supply of two gas cylinders, can more effectively prevent the gas in the air inlet pipe from leaking, and cooperate with the one-way valve member to achieve double protection, improving the safety performance of the gas combination valve. Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.
[0021] Figure 1 It is a schematic structural diagram of an embodiment of the gas combination valve provided by the present utility model;
[0022] Figure 2 The first cross-sectional view of an embodiment of the gas combination valve provided by the present utility model;
[0023] Figure 3 is Figure 2 a partial enlarged view of position A in
[0024] Figure 4 The second cross-sectional view of an embodiment of the gas combination valve provided by the present utility model.
[0025] Explanation of the reference numerals in the drawings:
[0026] 100, gas combination valve; 1, tee pipe fitting; 11, intake pipe; 111, first limiting step; 12, outlet pipe; 121, outlet joint; 2, check valve member; 21, ejector pin; 211, intake passage; 212, limiting block; 22, floating rod; 221, limiting ring block; 222, gas blocking block; 23, second sealing ring; 24, gasket; 25, second elastic member; 3, check valve assembly; 31, movable seal member; 311, second limiting step; 312, sealing column; 312a, sealing section; 32, plug; 321, intake hole; 33, first elastic member; 34, gas stopping block; 341, annular sealing projection; 4, joint assembly; 41, die-cast joint; 411, installation passage; 411a, third limiting step; 412, limiting ring groove; 413, intake interface; 42, first sealing ring; 43, pin;
[0027] 200, regulator; 210, intake joint; 220, anti-loosening indentation; 300, safety valve; 310, valve body; 320, control valve rod; 330, valve nozzle.
[0028] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0031] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0032] The present utility model provides a gas combination valve 100.
[0033] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, the gas combination valve 100 includes a regulator 200 and a safety valve 300. The regulator 200 and the safety valve 300 are connected. The gas combination valve 100 includes a tee fitting 1, two check valve members 2, and a check assembly 3. The tee fitting 1 has two inlet pipes 11 and one outlet pipe 12. The outlet pipe 12 is connected to the regulator 200. Each check valve member 2 is connected to one of the inlet pipes 11, and each check valve member 2 is connected to a gas cylinder and cooperates with the gas cylinder to supply gas to the inlet pipe 11. The check assembly 3 includes two movable seals 31 and two plugs 32. Each plug 32 is connected to the inner peripheral wall of one of the inlet pipes 11. Each plug 32 is provided with an inlet hole 321, and the inlet hole 321 communicates with the inlet pipe 11. The movable seal 31 is movably disposed at one end of the plug 32 away from the check valve member 2 along the extending direction of the inlet pipe 11. One end of the movable seal 31 away from the plug 32 is elastically connected to the wall surface of the inlet pipe 11 and can move closer to or away from the plug 32 to close or communicate the inlet pipe 11 with the outlet pipe 12.
[0034] In the technical solution of the present utility model, when the gas cylinder is connected to the two one-way valve members 2, the gas in the gas cylinder flows into the intake pipe 11. The gas flows and passes through the intake hole 321. Under the air flow pressure, the movable seal member 31 moves away from the plug 32, so that the intake pipe 11 is communicated with the outlet pipe 12. Further, the gas in the gas cylinder can enter the outlet pipe 12 through the intake pipe 11 and flow out from the outlet pipe 12; when the gas in one of the gas cylinders is used up, the movable seal member 31 is not pushed by the air flow pressure. Under the action of the elastic restoring force, the movable seal member 31 moves close to the plug 32, so that the intake pipe 11 and the outlet pipe 12 are closed; this structural setting can realize the independent control of the gas supply of the two gas cylinders, can more effectively prevent the gas in the intake pipe 11 from leaking, and cooperate with the one-way valve member 2 to achieve double protection, improving the safety performance of the gas combination valve 100.
[0035] Specifically, please refer to Figure 2 and Figure 3 In an embodiment of the present utility model, the check assembly 3 includes two first elastic members 33. A first limiting step 111 is formed on the peripheral wall surface of each intake pipe 11. A second limiting step 311 is formed at one end of each movable seal member 31 away from the plug 32. Each first elastic member 33 is located between a first limiting step 111 and a second limiting step 311. A sealing column 312 is formed at one end of each movable seal member 31 close to the plug 32. Each sealing column 312 can open or close an intake hole 321. When the gas cylinder is connected to the two one-way valve members 2, the gas in the gas cylinder flows into the intake pipe 11. The gas flows and passes through the intake hole 321. Under the air flow pressure, the movable seal member 31 moves away from the plug 32, the first elastic member 33 is compressed, and the sealing column 312 is separated from the intake hole 321, so that the intake pipe 11 is communicated with the outlet pipe 12. Further, the gas in the gas cylinder can enter the outlet pipe 12 through the intake pipe 11 and flow out from the outlet pipe 12; when the gas in one of the gas cylinders is used up, the movable seal member 31 is not pushed by the air flow pressure. Under the elastic restoring force of the first elastic member 33, the movable seal member 31 moves close to the plug 32, and the sealing column 312 is inserted into the intake hole 321, so that the intake pipe 11 and the outlet pipe 12 are closed, effectively preventing the gas in the intake pipe 11 from leaking or flowing back into the gas cylinder with low air pressure, and improving the safe use performance of the combination valve.
[0036] For facilitating the insertion of the sealing section 312a into the intake hole 321, please refer to Figure 2 and Figure 3, in an embodiment of the present utility model, a sealing section 312a is formed at one end of each of the sealing columns 312 away from the movable seal 31. The cross-sectional area of the sealing section 312a gradually decreases from the end close to the movable seal 31 to the end away from the movable seal 31. The gradually decreasing cross-section can ensure that the sealing section 312a contacts the air inlet hole 321 more tightly, thereby improving the sealing performance to reduce or eliminate leakage points and ensure the reliability of the seal; the gradually decreasing cross-section of the sealing section 312a can make the sealing end more smoothly snap into the air inlet hole 321, which is easy to guide and position, and can more accurately align the position of the air inlet hole 321 during the mating movement.
[0037] To further improve the sealing effect of the check assembly 3, please refer to Figure 2 and Figure 3 , in an embodiment of the present utility model, the check assembly 3 includes two air stop blocks 34. Each of the air stop blocks 34 is sleeved on one of the sealing columns 312. The sealing section 312a is exposed outside the air stop block 34. An annular sealing protrusion 341 is formed on one side of each of the air stop blocks 34 facing away from the movable seal 31. Each of the annular sealing protrusions 341 can abut against the side wall of one of the plugs 32 and is arranged around the edge of the air inlet hole 321. When the one-way valve member 2 is connected to the gas cylinder to supply gas to the intake pipe 11, the movable seal 31 moves away from the plug 32 under the pushing action of the air flow, and the intake pipe 11 is communicated with the outlet pipe 12. When the gas in one of the gas cylinders is used up, the movable seal 31 moves close to the plug 32 under the action of the elastic restoring force to close the intake pipe 11 and the outlet pipe 12. At this time, the annular sealing protrusion 341 of the air stop block 34 can surround the outer periphery of the air inlet hole 321 to prevent the gas in the intake pipe 11 from leaking to the external environment through the air inlet hole 321, thereby improving the sealing effect of the check assembly 3.
[0038] Furthermore, please refer to Figure 2 and Figure 3, in an embodiment of the present utility model, the gas combination valve 100 includes a joint assembly 4. The joint assembly 4 includes two die-cast joints 41. The two die-cast joints 41 are respectively connected to the two intake pipes 11 of the tee pipe fitting 1. The die-cast joint 41 is provided with an installation channel 411, and the installation channel 411 communicates with the intake pipe 11. Each one-way valve member 2 is connected to the installation channel 411 of one die-cast joint 41. By using the die-cast joint 41 and the installation channel 411, it is easier to install and connect the one-way valve member 2, ensuring that the valve member is safely and reliably installed on the intake pipe 11; the one-way valve member 2 prevents the reverse flow of gas, ensuring the normal operation of the combination valve and avoiding the occurrence of dangerous situations; by using the die-cast joint 41 and the reasonably designed installation channel 411, the performance of the overall structure can be optimized, improving safety and reliability.
[0039] For facilitating the connection and disconnection of the gas cylinder, please refer to Figure 4 , in an embodiment of the present utility model, the joint assembly 4 includes a plurality of first sealing rings 42 and two pins 43. The plurality of first sealing rings 42 are sleeved on one end of the die-cast joint 41 close to the intake pipe 11 and abut against the inner peripheral wall of the intake pipe 11; a limiting ring groove 412 is provided at one end of each die-cast joint 41 close to the intake pipe 11, and the two pins 43 are spaced apart and penetrate through the intake pipe 11 to abut against the groove wall of the limiting ring groove 412 to limit the movement of the die-cast joint 41 along the axial direction of the intake pipe 11. The plurality of first sealing rings 42 are used to improve the connection sealing performance between the die-cast joint 41 and the intake pipe 11, ensuring that gas does not leak when entering the combination valve, effectively preventing gas from leaking out through the gap between the die-cast joint 41 and the intake pipe 11, and improving the safety performance of the combination valve; when connecting or disconnecting the gas cylinder, the die-cast joint 41 can rotate to facilitate the user to operate at a suitable position, and the setting of the limiting ring groove 412 and the pins 43 can limit the movement of the die-cast joint 41 along the axial direction of the intake pipe 11, avoiding the separation of the die-cast joint 41 from the intake pipe 11 when the die-cast joint 41 rotates. The simultaneous setting of the first sealing ring 42, the limiting ring groove 412 and the pins 43 enables the die-cast joint 41 to rotate relative to the intake pipe 11 while improving the sealing performance of their connection.
[0040] More specifically, please refer to Figure 2 and Figure 3, in an embodiment of the present utility model, the one-way valve member 2 includes a thimble 21, a floating rod 22 and a second sealing ring 23. The thimble 21 is threadedly connected to the installation channel 411. The thimble 21 is provided with an air inlet channel 211, and the air inlet channel 211 communicates with the installation channel 411. The floating rod 22 is in clearance fit with the air inlet channel 211 and is elastically connected to the wall surface of the installation channel 411. The floating rod 22 is provided with a limit ring block 221 and an air blocking block 222. The second sealing ring 23 is sleeved on the floating rod 22 and is located between the limit ring block 221 and the air blocking block 222. The floating rod 22 can move closer to or away from the die-casting joint 41 to close or open the air inlet channel 211 and the installation channel 411. When the one-way valve member 2 is connected to the gas cylinder, the gas in the gas cylinder flows into the air inlet channel 211 and pushes the floating rod 22 to drive the second sealing ring 23 to move upward, so that the gas can enter the air inlet channel 211 and flow to the air inlet pipe 11 and the air outlet pipe 12. When the one-way valve member 2 is not connected to the gas cylinder, the floating rod 22 moves downward under the action of the elastic restoring force and drives the second sealing ring 23 to seal the air inlet channel 211, avoiding the leakage of the gas in the air inlet pipe 11.
[0041] Further, please refer to Figure 2 and Figure 3 , in an embodiment of the present utility model, the one-way valve member 2 includes a gasket 24 and a second elastic member 25. The thimble 21 is provided with a limit block 212. An air inlet interface 413 is formed at one end of the die-casting joint 41 away from the air inlet pipe 11. The gasket 24 is arranged between the limit block 212 and the bottom wall of the air inlet interface 413. A third limit step 411a is formed on the peripheral wall surface of the installation channel 411. The second elastic member 25 is sleeved on the floating rod 22 and is located between the third limit step 411a and the limit ring block 221. The cross-sectional area of the air blocking block 222 gradually decreases from the end close to the second sealing ring 23 to the end far from the second sealing ring 23. The gasket 24 is provided to enhance the sealing performance between the thimble 21 and the installation channel 411. When the one-way valve member 2 is connected to the gas cylinder, the gas in the gas cylinder flows into the air inlet channel 211 and pushes the floating rod 22 to drive the second sealing ring 23 to move upward, so that the gas can enter the air inlet channel 211 and flow to the air inlet pipe 11 and the air outlet pipe 12. When the one-way valve member 2 is not connected to the gas cylinder, the floating rod 22 moves downward under the action of the elastic restoring force of the second elastic member 25 and drives the second sealing ring 23 to seal the air inlet channel 211, avoiding the leakage of the gas in the air inlet pipe 11. The gradually decreasing cross-sectional area of the air blocking block 222 can ensure that the air blocking block 222 contacts the air inlet channel 211 more closely, thereby improving the sealing performance to reduce or eliminate leakage points and ensuring the reliability of the seal.
[0042] Please refer to Figure 1 In an embodiment of the present utility model, the safety valve 300 includes a valve body 310, a control valve stem 320, and a valve nozzle 330. The valve body 310 is respectively connected to the regulator 200, the control valve stem 320, and the valve nozzle 330. The control valve stem 320 is used to control the gas spraying out from the valve nozzle 330. The user can operate the control valve stem 320 to control the gas spraying out from the valve nozzle 330 for use. By adjusting the position of the control valve stem 320, the opening and closing of the valve nozzle 330 can be precisely adjusted, so as to control the gas flow rate released, and ensure that the pressure can be effectively released when needed.
[0043] Please refer to Figure 1 In an embodiment of the present utility model, the gas outlet pipe 12 is provided with a gas outlet joint 121, and the regulator 200 is provided with an air inlet joint 210. The air inlet joint 210 is sleeved on the gas outlet joint 121 and is threadedly connected to the gas outlet joint 121. Two anti-loosening concave points 220 are spaced on the outer peripheral wall of the air inlet joint 210. In the threaded connection, the existence of the anti-loosening concave points 220 can effectively prevent the joint from loosening by itself due to vibration or external force; the anti-loosening concave points 220 are designed to form an additional resistance between the two joints, so that the thread is not easy to loosen during normal operation; the existence of the anti-loosening concave points 220 also helps to ensure that the threaded connection always remains tight, reducing the risk of gas leakage; by reducing the wear caused by the loosening of the thread, the anti-loosening concave points 220 can extend the service life of the joint and the pipeline.
[0044] The present utility model also proposes a gas stove, which includes a stove body and a gas combination valve 100. The specific structure of the gas combination valve 100 refers to the above embodiment. Since this gas stove adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, the gas combination valve 100 is arranged on the stove body; this gas stove adopts the gas combination valve 100 to improve the safety performance and use convenience of the gas stove.
[0045] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.
Claims
1. A gas combination valve, comprising an adjuster and a safety valve, the adjuster and the safety valve being connected, characterized in that, The gas combination valve includes: A tee fitting, the tee fitting having two inlet pipes and one outlet pipe, and the outlet pipe is connected to the regulator; Two check valve members, each check valve member being connected to one of the inlet pipes, each check valve member being connected to a gas cylinder and cooperating with the gas cylinder to supply gas to the inlet pipe; and A check component, the check component including two movable seals and two plugs, each plug being connected to the inner peripheral wall of one of the inlet pipes, each plug being provided with an air inlet hole, the air inlet hole communicating with the inlet pipe, the movable seal being movably disposed at one end of the plug away from the check valve member along the extending direction of the inlet pipe, one end of the movable seal away from the plug being elastically connected to the wall surface of the inlet pipe and capable of moving closer to or away from the plug so as to close or communicate the inlet pipe with the outlet pipe.
2. The gas combination valve according to claim 1, wherein The check component includes two first elastic members, a first limiting step is provided on the peripheral wall surface of each inlet pipe, a second limiting step is provided at one end of each movable seal away from the plug, each first elastic member is located between one first limiting step and one second limiting step, a sealing column is formed at one end of each movable seal close to the plug, and each sealing column can open or close one air inlet hole.
3. The gas combination valve according to claim 2, wherein, One end of each sealing column away from the movable seal forms a sealing section, and the cross-sectional area of the sealing section gradually decreases from the end close to the movable seal to the end away from the movable seal.
4. The gas combination valve according to claim 3, characterized in that, The check component includes two air stop blocks, each air stop block being sleeved on one sealing column, the sealing section being exposed outside the air stop block, a ring-shaped sealing protrusion is formed on one side of each air stop block facing away from the movable seal, and each ring-shaped sealing protrusion can abut against the side wall of one plug and is arranged around the orifice edge of the air inlet hole.
5. The gas combination valve according to any one of claims 1 to 4, characterized in that, The gas combination valve includes a joint component, the joint component including two die-cast joints, the two die-cast joints are respectively connected to the two inlet pipes of the tee fitting, the die-cast joint is provided with an installation channel, the installation channel communicates with the inlet pipe, and each check valve member is connected to the installation channel of one die-cast joint.
6. The gas combination valve according to claim 5, characterized in that, The joint component includes a plurality of first sealing rings and two pins, the plurality of first sealing rings are sleeved on one end of the die-cast joint close to the inlet pipe and abut against the inner peripheral wall of the inlet pipe; a limiting ring groove is provided at one end of each die-cast joint close to the inlet pipe, and the two pins are spaced apart and penetrate through the inlet pipe to abut against the groove wall of the limiting ring groove to limit the die-cast joint from moving along the axial direction of the inlet pipe.
7. The gas combination valve according to claim 5, characterized in that The one-way valve member includes a thimble, a floating rod, and a second sealing ring. The thimble is threadedly connected to the installation channel. An air intake channel is formed in the thimble, and the air intake channel is communicated with the installation channel. The floating rod is in clearance fit with the air intake channel and is elastically connected to the wall surface of the installation channel. A limiting ring block and an air blocking block are provided on the floating rod. The second sealing ring is sleeved on the floating rod and is located between the limiting ring block and the air blocking block. The floating rod can move closer to or away from the die-casting joint to close or open the air intake channel and the installation channel.
8. The gas combination valve according to claim 7, wherein The one-way valve member includes a gasket and a second elastic member. A limiting block is provided on the thimble. An air intake interface is formed at one end of the die-casting joint away from the air intake pipe. The gasket is arranged between the limiting block and the bottom wall of the air intake interface. A third limiting step is formed on the peripheral wall surface of the installation channel. The second elastic member is sleeved on the floating rod and is located between the third limiting step and the limiting ring block. The cross-sectional area of the air blocking block gradually decreases from the end close to the second sealing ring to the end far from the second sealing ring.
9. The gas combination valve according to any one of claims 1 to 4, characterized in that, The safety valve includes a valve body, a control valve rod, and a valve nozzle. The valve body is respectively connected to the regulator, the control valve rod, and the valve nozzle. The control valve rod is used to control the gas to spray out from the valve nozzle.
10. A gas stove, characterized in that, Comprising: The gas combination valve according to any one of claims 1 to 9; and A furnace body, and the gas combination valve is arranged on the furnace body.