阅读说明：本技术 便于调节通气量的燃气旋塞阀 (Gas plug valve convenient to adjust air flow ) 是由 *** 潘赛斌 梁圣佶 梁垚垚 *** 于 2019-10-17 设计创作，主要内容包括：本申请提供了一种便于调节通气量的燃气旋塞阀,包括带有配气腔的配气阀芯,配气腔轴向一端插设有开关阀芯,另一端带有进气孔,开关阀芯的端部连接有向配气腔内延伸且带动配气阀芯旋转的阀杆,开关阀芯具有相对配气阀芯轴向运动的下压点火状态以及复位状态,且开关阀芯上设有下压点火状态下与配气腔内壁相配合的密封结构,配气阀芯侧壁开设有与配气腔连通的外环供气孔、内环供气孔和点火供气孔,且点火供气孔的轴向位置最邻近进气孔；下压点火状态下,密封结构阻断外环供气孔和内环供气孔这两者与进气孔之间的连通,仅点火供气孔保持与进气孔连通；复位状态下各供气孔均保持与进气孔连通。本申请提供的燃气旋塞阀,能够调节通气量。(The application provides a gas plug valve convenient for regulating ventilation capacity, which comprises a gas distribution valve core with a gas distribution cavity, wherein a switch valve core is inserted at one axial end of the gas distribution cavity, an air inlet hole is formed at the other end of the gas distribution cavity, the end part of the switch valve core is connected with a valve rod which extends into the gas distribution cavity and drives the gas distribution valve core to rotate, the switch valve core is provided with a downward pressing ignition state and a reset state which move relative to the gas distribution valve core in the axial direction, the switch valve core is provided with a sealing structure which is matched with the inner wall of the gas distribution cavity in the downward pressing ignition state, the side wall of the gas distribution valve core is provided with an outer ring air supply hole, an inner ring air supply hole and; in a downward pressing ignition state, the sealing structure blocks the communication between the air supply hole of the outer ring and the air supply hole of the inner ring and the air inlet hole, and only the ignition air supply hole is communicated with the air inlet hole; each air supply hole is communicated with the air inlet hole in the reset state. The application provides a gas plug valve can adjust the air flow.)

1. A gas plug valve convenient for regulating ventilation capacity comprises a gas distribution valve core with a gas distribution cavity, a switch valve core is inserted at one axial end of the gas distribution cavity, an air inlet is arranged at the other axial end of the gas distribution cavity, a valve rod which extends into the gas distribution cavity and drives the gas distribution valve core to rotate is connected at the end part of the switch valve core, the switch valve core has a downward pressing ignition state and a reset state which move relative to the gas distribution valve core, and a sealing structure which is matched with the inner wall of the gas distribution cavity under the downward pressing ignition state is arranged on the switch valve core,

the side wall of the gas distribution valve core is provided with an outer ring gas supply hole, an inner ring gas supply hole and an ignition gas supply hole which are communicated with the gas distribution cavity, and the axial position of the ignition gas supply hole is most adjacent to the gas inlet hole;

in a pressing ignition state, the sealing structure blocks the communication between the outer ring air supply hole and the inner ring air supply hole and the air inlet hole, and only the ignition air supply hole is communicated with the air inlet hole;

and each air supply hole is communicated with the air inlet hole in the reset state.

2. The gas plug valve convenient for adjusting the ventilation quantity according to claim 1, characterized in that in a downward-pressing ignition state, the sealing structure divides the gas distribution cavity into three sub-cavities which are isolated from each other, and only one of the sub-cavities is an ignition gas supply sub-cavity communicated with the gas inlet hole;

the ignition air supply hole is communicated with the ignition air supply cavity, and the outer ring air supply hole and the inner ring air supply hole are respectively communicated with the other cavities.

3. The gas cock valve facilitating the regulation of ventilation according to claim 1, wherein each of the gas supply holes is a passage extending in a side wall of the gas distribution valve core; one end of each air supply hole extends to the inner wall of the air distribution cavity to form an air inlet, and the other end of each air supply hole extends to the outer wall of the air distribution valve core to form an air outlet; the ignition gas supply holes and the adjacent gas supply holes are intersected in the side wall of the gas distribution valve core and correspond to the same gas outlet on the outer wall of the gas distribution valve core.

4. The gas cock valve convenient for adjusting ventilation according to claim 3, wherein the outer ring gas supply hole, the inner ring gas supply hole and the ignition gas supply hole are sequentially arranged along the axial direction at the gas inlet of the inner wall of the gas distribution chamber, and the ignition gas supply hole is closest to the gas inlet at the gas inlet of the inner wall of the gas distribution chamber.

5. The gas cock valve facilitating adjustment of ventilation according to claim 4, wherein the inner ring gas supply hole and the ignition gas supply hole have the inner ring gas supply hole as a main passage, the ignition gas supply hole as a bypass passage, and the bypass passage has a smaller sectional area with respect to the main passage to obtain a smaller ventilation.

6. The gas cock valve with adjustable ventilation as claimed in claim 3, wherein the outer ring gas supply hole and the inner ring gas supply hole are respectively formed to penetrate through the side wall of the gas distribution valve core in a radial direction, and the ignition gas supply hole is formed to be inclined with respect to the axial direction.

7. The gas plug valve convenient for regulating the ventilation capacity of claim 1, wherein two annular platforms are sequentially arranged on the inner wall of the gas distribution cavity along the axial direction, and each annular platform is positioned between two adjacent gas inlets;

the sealing structure comprises two sealing gaskets which are sequentially arranged on the switch valve core along the axial direction, and each sealing gasket is respectively propped against a corresponding annular platform for sealing in a downward-pressing ignition state.

8. The gas fired plug valve for facilitating the adjustment of ventilation of claim 7, wherein said two annular lands comprise:

the first annular table is fixedly superposed with a lantern ring, and the lantern ring is provided with a fillet sealing surface which is in sealing contact with the corresponding sealing washer;

and the second annular table is provided with an inclined sealing surface which gradually sinks from outside to inside, and the corresponding sealing gasket is tightly matched with the inclined sealing surface in a pressing ignition state.

9. The gas plug valve convenient for adjusting the ventilation quantity according to claim 1, wherein a sealing component in sliding sealing fit with the inner wall of the air distribution cavity is installed at one end, far away from the air inlet, of the switch valve core, and the sealing component comprises:

a ferrule slidably mounted on the periphery of the switch valve core;

the pressing plates are fixed on the switch valve core and are respectively positioned at two axial sides of the ferrule;

a return spring abutting between each pressure plate and the corresponding side of the ferrule;

the outer sealing ring is fixed on the periphery of the ferrule and matched with the inner wall of the gas distribution cavity;

and the inner sealing ring is fixed on the inner edge of the ferrule and matched with the switch valve core.

10. The gas cock valve convenient for adjusting ventilation according to claim 1, further comprising a valve body, wherein the gas distribution valve core is rotatably installed in the valve body, two gas outlet channels are formed in the valve body, during gas supply, the outer ring gas supply hole and the inner ring gas supply hole are respectively butted with one of the gas outlet channels, and the ignition gas supply hole and an adjacent gas supply hole are converged in the side wall of the gas distribution valve core and butted with the same gas outlet channel.

Technical Field

The application relates to the field of valves, in particular to a gas plug valve convenient for adjusting ventilation capacity.

Background

The existing household appliances such as water heaters and gas cookers use pipeline gas or liquefied gas as fuel, and compared with electric heating, the pipeline gas or liquefied gas heating by combustion has higher thermal efficiency and fast heating rate, so that the pipeline gas or liquefied gas heating device is more popular among the public. The heating temperature of the common electric appliance is adjusted simply by adjusting the working power of the electric appliance, but for the electric appliance using gas, the air inflow needs to be adjusted, and the main part for adjusting the air inflow is the gas plug valve.

Disclosure of Invention

Therefore, it is necessary to provide a gas cock valve which is convenient for adjusting ventilation amount, in order to solve the problem that the gas amount is large when the conventional gas cock valve is ignited.

In order to achieve the purpose, the following technical scheme is adopted in the application: a gas plug valve convenient for regulating ventilation capacity comprises a gas distribution valve core with a gas distribution cavity, wherein a switch valve core is inserted at one axial end of the gas distribution cavity, an air inlet hole is formed in the other axial end of the gas distribution cavity, a valve rod which extends into the gas distribution cavity and drives the gas distribution valve core to rotate is connected to the end part of the switch valve core, the switch valve core is provided with a press-down ignition state and a reset state which move relative to the gas distribution valve core in the axial direction, a sealing structure which is matched with the inner wall of the gas distribution cavity in the press-down ignition state is arranged on the switch valve core, an outer ring air supply hole, an inner ring air supply hole and an ignition air supply hole which are communicated with the gas distribution cavity are formed in;

in a pressing ignition state, the sealing structure blocks the communication between the outer ring air supply hole and the inner ring air supply hole and the air inlet hole, and only the ignition air supply hole is communicated with the air inlet hole;

and each air supply hole is communicated with the air inlet hole in the reset state.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, in a downward-pressing ignition state, the sealing structure divides the air distribution cavity into three sub-cavities which are isolated from each other, and only one sub-cavity is an ignition air supply sub-cavity communicated with the air inlet;

the ignition air supply hole is communicated with the ignition air supply cavity, and the outer ring air supply hole and the inner ring air supply hole are respectively communicated with the other cavities.

Optionally, each air supply hole is a channel extending in a side wall of the air distribution valve core; one end of each air supply hole extends to the inner wall of the air distribution cavity to form an air inlet, and the other end of each air supply hole extends to the outer wall of the air distribution valve core to form an air outlet; the ignition gas supply holes and the adjacent gas supply holes are intersected in the side wall of the gas distribution valve core and correspond to the same gas outlet on the outer wall of the gas distribution valve core.

Optionally, the outer ring air supply hole, the inner ring air supply hole and the ignition air supply hole are sequentially arranged along the axial direction at the air inlet of the inner wall of the air distribution cavity, and the ignition air supply hole is closest to the air inlet at the air inlet of the inner wall of the air distribution cavity.

Optionally, the inner ring air supply hole and the ignition air supply hole are arranged such that the inner ring air supply hole serves as a main passage, the ignition air supply hole serves as a bypass passage, and the bypass passage has a smaller cross-sectional area with respect to the main passage to obtain a smaller ventilation amount.

Optionally, the outer ring air supply hole and the inner ring air supply hole respectively penetrate through the side wall of the air distribution valve core along the radial direction, and the ignition air supply hole is obliquely arranged relative to the axial direction.

Optionally, two annular platforms are sequentially arranged on the inner wall of the gas distribution cavity along the axial direction, and each annular platform is positioned between two adjacent gas inlets;

the sealing structure comprises two sealing gaskets which are sequentially arranged on the switch valve core along the axial direction, and each sealing gasket is respectively propped against a corresponding annular platform for sealing in a downward-pressing ignition state.

Optionally, the two annular tables include:

the first annular table is fixedly superposed with a lantern ring, and the lantern ring is provided with a fillet sealing surface which is in sealing contact with the corresponding sealing washer;

and the second annular table is provided with an inclined sealing surface which gradually sinks from outside to inside, and the corresponding sealing gasket is tightly matched with the inclined sealing surface in a pressing ignition state.

Optionally, a sealing assembly in sliding sealing fit with the inner wall of the gas distribution cavity is installed at one end, far away from the gas inlet, of the switch valve core, and the sealing assembly comprises:

a ferrule slidably mounted on the periphery of the switch valve core;

the pressing plates are fixed on the switch valve core and are respectively positioned at two axial sides of the ferrule;

a return spring abutting between each pressure plate and the corresponding side of the ferrule;

the outer sealing ring is fixed on the periphery of the ferrule and matched with the inner wall of the gas distribution cavity;

and the inner sealing ring is fixed on the inner edge of the ferrule and matched with the switch valve core.

Optionally, the gas distribution valve further comprises a valve body, the gas distribution valve core is rotatably installed in the valve body, two gas outlet channels are formed in the valve body, during gas supply, the outer ring gas supply hole and the inner ring gas supply hole are respectively butted with one of the gas outlet channels, and the ignition gas supply hole and the adjacent gas supply hole are intersected in the side wall of the gas distribution valve core and butted with the same gas outlet channel.

The application provides a pair of gas plug valve convenient to adjust air flow, switch case are when pushing down the ignition state, and the gas distribution valve core only ignites the air feed hole and keeps the intercommunication with the inlet port, has avoided the gas to get into and follow the phenomenon that outer loop air feed hole, inner ring air feed hole flow from the inlet port, reduces the air flow when igniteing, is convenient for adjust air flow with the energy saving.

Drawings

FIG. 1 is a schematic structural diagram of a gas cock valve for facilitating regulation of ventilation according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a gas distribution valve core in the gas plug valve shown in FIG. 1;

fig. 3 is a schematic structural view of the gas plug valve shown in fig. 1 from another view angle.

The reference numerals in the figures are illustrated as follows:

100. a gas plug valve; 10. a gas distribution valve core; 11. a gas distribution cavity; 111. an air inlet; 1111. an outer ring air inlet; 1112. an inner ring air inlet; 1113. an ignition gas inlet; 112. an air outlet; 1121. an outer ring air outlet; 1122. an inner ring air outlet; 113. a first annular table; 114. a second annular table; 1141. a sloped sealing surface; 115. a collar; 1151. a fillet sealing surface; 116. positioning a step; 12. a switch valve core; 13. an air inlet; 14. a valve stem; 141. a limiting plate; 15. a sealing structure; 151. a first sealing gasket; 152. a second sealing gasket; 153. a positioning ring; 16. an outer ring air supply hole; 161. the outer ring is provided with an air supply cavity; 17. an inner ring air supply hole; 171. the inner ring is provided with an air supply cavity; 18. an ignition air supply hole; 181. an ignition gas supply sub-chamber; 19. a seal assembly; 191. a ferrule; 192. an outer sealing ring; 193. an inner seal ring; 194. a first platen; 195. a second platen; 196. a third press plate; 197. a limiting step; 198. a first return spring; 199. a second return spring; 20. a valve body; 21. an air outlet channel; 211. an outer ring air outlet channel; 212. an inner ring air outlet channel; 22. a fixing plate; 23. pushing the plate; 24. a spring; 25. an internal environment-friendly fire outlet channel; 26. fine adjustment of screws; 27. and (4) sealing the ball.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3 together, an embodiment of the present invention provides a gas cock valve 100 for adjusting ventilation, which includes a gas distribution valve core 10 having a gas distribution chamber 11, and a switch valve core 12 inserted into the gas distribution valve core 10, wherein the switch valve core 12 moves in the gas distribution chamber 11 along an axial direction. The air distribution cavity 11 is a hollow structure formed inside the air distribution valve core 10, the air distribution cavity 11 forms the inner wall of the air distribution cavity 11 based on the hollow structure, and the side wall of the air distribution valve core 10 is formed between the air distribution cavity 11 and the periphery of the air distribution valve core 10.

The air distribution cavity 11 has an axis, the switch valve core 12 is inserted into one axial end of the air distribution cavity 11, and the other axial end of the air distribution cavity 11 is provided with an air inlet 13. The side wall of the air distribution valve core 10 is provided with an outer ring air supply hole 16, an inner ring air supply hole 17 and an ignition air supply hole 18 which are communicated with the air distribution chamber 11, the axial position of the ignition air supply hole 18 is nearest to the air inlet hole 13, and the air inlet hole 13 can be respectively communicated with the outer ring air supply hole 16, the inner ring air supply hole 17 and the ignition air supply hole 18.

The switch valve core 12 extends from one axial end of the gas distribution cavity 11 to the inside of the gas distribution cavity 11, the end part of the switch valve core 12 is connected with a valve rod 14, the valve rod 14 extends to the inside of the gas distribution cavity 11, and the valve rod 14 can drive the gas distribution valve core 10 to rotate. The switch spool 12 has a depressed ignition state and a reset state that move axially relative to the gas distribution spool 10. Further, the switch spool 12 is substantially columnar and arranged coaxially with the gas distribution chamber 11.

The switch valve core 12 is provided with a sealing structure 15 which is matched with the inner wall of the gas distribution cavity 11 in a downward pressing ignition state. In the press-down ignition state, the seal structure 15 blocks the communication between the intake holes 13 and the outer ring air supply hole 16, while the seal structure 15 can block the communication between the intake holes 13 and the inner ring air supply hole 17, and only the ignition air supply hole 18 remains in communication with the intake holes 13. The sealing structure 15 may be a single component or an assembly distributed in a plurality of places, depending on the sealing site. In the reset state, each of the air supply holes is kept in communication with the air intake hole 13, that is, the air intake hole 13 is kept in communication with the outer ring air supply hole 16, the inner ring air supply hole 17, and the ignition air supply hole 18.

In the gas plug valve 100 provided by the embodiment, when the switch valve core 12 is in a downward-pressing ignition state, the gas distribution valve core 10 only keeps the ignition gas supply hole 18 communicated with the gas inlet hole 13, so that the phenomenon that gas enters from the gas inlet hole 13 and flows out from the outer ring gas supply hole 16 and the inner ring gas supply hole 17 is avoided, the gas flow during ignition is reduced, at the moment, the inner ring has no big fire and only small fire, and the ventilation volume is convenient to adjust so as to save energy.

In one embodiment, the gas cock valve 100 further comprises a valve body 20, the gas distribution valve core 10 is rotatably installed in the valve body 20, a plurality of gas outlet channels 21 are formed in the valve body 20, and each gas outlet channel 21 is communicated with a corresponding gas supply hole. The valve rod 14 is provided with a restricting plate 141 fixedly attached to the valve rod 14, the valve body 20 is provided with a fixing plate 22 for blocking the restricting plate 141, and the valve rod 14 is prevented from rotating by the fixing plate 22. For example, the fixing plate 22 is provided with an axially extending slot into which the limiting plate 141 is inserted, so as to circumferentially limit the limiting plate 141.

When the valve rod 14 is pressed down, the valve rod 14 drives the limiting plate 141 to move axially, the limiting plate 141 crosses the space interference of the fixing plate 22, and the valve rod 14 can be separated from the limitation of the fixing plate 22 to rotate the valve rod 14. When the valve rod 14 drives the switch valve core 12 to press down, the limiting plate 141 drives the push plate 23 to overcome the elastic force of the spring 24 to trigger the ignition device, and the ignition device further triggers the electromagnetic valve which is matched with the air inlet 13 for air supply, so that the pressure plate gas can enter the air distribution chamber 11 from the air inlet 13. At this time, the valve rod 14 is rotated to rotate the gas distribution valve core 10, so that the outer ring gas supply hole 16, the inner ring gas supply hole 17 and the ignition gas supply hole 18 of the gas distribution valve core 10 are communicated with the gas outlet channel 21 corresponding to the position in the valve body 20, and the switch valve core 12 is pressed to be ignited, so that the gas inlet hole 13 is communicated with the ignition gas supply hole 18 and is communicated with the corresponding gas outlet channel 21 (for example, the outer ring gas outlet channel 211 in fig. 1). When the valve rod 14 is released, the valve rod 14 moves axially, the switch valve core 12 is reset, the gas distribution valve core 10 keeps the state after rotation, and the gas inlet hole 13 is communicated with the outer ring gas supply hole 16, the inner ring gas supply hole 17 and the ignition gas supply hole 18 and is also communicated with each gas outlet channel 21 in the valve body 20.

It should be noted that the present invention is improved with the focus on the gas distribution valve body 10, and other conventional techniques can be adopted with respect to the ignition device and the engagement relationship between the restriction plate 141 and the fixed plate 22.

In one embodiment, in a downward-pressing ignition state, the sealing structure 15 on the switch valve core 12 divides the gas distribution cavity 11 into three sub-cavities which are isolated from each other, wherein only one sub-cavity is an ignition gas supply sub-cavity 181 communicated with the gas inlet 13, the ignition gas supply hole 18 is communicated with the ignition gas supply sub-cavity 181, and the trend of the gas in the downward-pressing ignition state is as follows: inlet holes 13-ignition air feed subchamber 181-ignition air feed holes 18.

Outer loop air feed hole 16 and inner ring air feed hole 17 communicate other subchambers respectively, that is outer loop air feed hole 16 communicates outer loop air feed subchamber 161, and inner ring air feed hole 17 communicates inner ring air feed subchamber 171, presses down under the ignition state, blocks not intercommunicates because of seal structure 15 between inlet port 13 and the outer loop air feed subchamber 161, blocks not intercommunicate because of seal structure 15 between inlet port 13 and the inner ring air feed subchamber 171. In the reset state, the trend of the fuel gas is as follows: the intake holes 13-the inner ring air supply subchamber 171-the inner ring air supply hole 17, and the intake holes 13-the outer ring air supply subchamber 161-the outer ring air supply hole 16.

Specifically, referring to fig. 2 and fig. 3, each air supply hole is a channel extending in the side wall of the air distribution valve core 10, one end of each air supply hole extends to the inner wall of the air distribution chamber 11 to form a corresponding air inlet 111 (specifically including an outer ring air inlet 1111, an inner ring air inlet 1112, and an ignition air inlet 1113), the other end of each air supply hole extends to the outer wall of the air distribution valve core 10 to form a corresponding air outlet 112 (specifically including an outer ring air outlet 1121, and an inner ring air outlet 1122), the air inlet 111 of each air supply hole in the inner wall of the air distribution chamber 11 are independent from each other and are sequentially arranged along the axial direction, wherein the ignition air supply hole 18 and an adjacent air supply hole intersect in the side wall of the air distribution valve core 10, and correspond to the same air outlet in the outer wall of the air distribution valve. The number of the air outlets 112 is reduced by the intersection of the air supply holes, and the structural complexity of the valve body 20 is reduced by correspondingly reducing the number of the air outlet channels 21 on the valve body 20.

Further, the ignition air supply hole 18 is closest to the air intake hole 13 at the air intake port on the inner wall of the air distribution chamber 11, i.e., the ignition air intake port 1113, and the gas can preferentially enter the ignition air supply hole 18 when entering the air intake hole 13.

The positions of the inner ring air supply hole 17 and the outer ring air supply hole 16 in the axial direction of the air distribution valve core 10 may be set as required. Taking the orientation in fig. 1 as an example, the air distribution chamber 11 is provided with an outer ring air supply hole 16, an inner ring air supply hole 17, an ignition air supply hole 18 and an air inlet hole 13 from top to bottom in sequence along the axial direction. Referring to fig. 2 and 3, the outer ring air supply holes 16 are distributed with outer ring air inlets 1111 and outer ring air outlets 1121 from right ends to left ends, the inner ring air supply holes 17 are also distributed with inner ring air inlets 1112 and inner ring air outlets 1122 from right ends to left ends, the right ends of the ignition air supply holes 18 are separate ignition air inlets 1113, and the left ends of the ignition air supply holes 18 are converged through the inner ring air supply holes 17 and share the same inner ring air outlets 1122 with the inner ring air supply holes 17. Wherein, the right end is arranged on the inner wall of the gas distribution cavity 11, and the left end is arranged on the outer wall of the gas distribution valve core 10.

It is understood that the distribution positions of the inner ring air supply holes 17 and the outer ring air supply holes 16 in the axial direction can be exchanged. The portion of the ignition air supply hole 18 into which the left end merges is preferably located at a middle position or a position near the right end in the direction in which the passage formed by the inner ring air supply hole 17 extends. The outer ring air supply hole 16, the inner ring air supply hole 17, and the ignition air supply hole 18 may be understood as passages.

Specifically, of the inner ring air supply hole 17 and the ignition air supply hole 18, the inner ring air supply hole 17 serves as a main passage, the ignition air supply hole 18 serves as a bypass passage, and the bypass passage has a smaller sectional area with respect to the main passage to obtain a smaller ventilation amount. Under the state of pressing down and lighting, the trend of gas is: the air inlet hole 13, the ignition air supply sub-cavity 181, the ignition air supply hole 18 and the inner ring air supply hole 17.

More specifically, the outer ring air supply holes 16 and the inner ring air supply holes 17 penetrate the side wall of the gas distribution spool 10 in the radial direction, respectively, and the ignition air supply holes 18 are arranged obliquely with respect to the axial direction. The outer ring air supply holes 16 and the inner ring air supply holes 17 may be formed in a curved line or a straight line, the ignition air supply holes 18 are inclined at an angle of 30 to 60 degrees with respect to the axial direction, and the ignition air inlets 1113 of the ignition air supply holes 18 are closer to the air inlet holes 13 than the inner ring air outlets 1122.

In one embodiment, the air outlet channels 21 on the valve body 20 include two outer ring air outlet channels 211 and two inner ring air outlet channels 212, respectively, the outer ring air outlet channels 211 are as shown in fig. 1, the inner ring air outlet channels 212 are as shown in fig. 3, when air is supplied, the outer ring air supply holes 16 and the inner ring air supply holes 17 are respectively butted with one of the air outlet channels 21, that is, the outer ring air supply holes 16 communicate with the outer ring air outlet channels 211, the inner ring air supply holes 17 communicate with the inner ring air outlet channels 212, and the ignition air supply holes 18 and an adjacent one of the air supply holes meet in the side wall of the air distribution valve core 10 and are butted with the same. It is understood that the adjacent one of the air supply holes may be the inner ring air supply hole 17 or the outer ring air supply hole 16, such as the ignition air supply hole 18 and the inner ring air supply hole 17 share the same air outlet channel 21, and the same air outlet channel 21 is the inner ring air outlet channel 212.

Further, an inner environment-friendly fire outlet channel 25 is further arranged on the valve body 20, a fine adjustment screw 26 is inserted into the inner environment-friendly fire outlet channel 25, and a certain gap is left between the outer wall of the fine adjustment screw 26 and the inner wall of the valve body formed by the insertion of the fine adjustment screw 26 to communicate the inner environment-friendly fire outlet channel 25 and the inner environment outlet channel 212. The fuel gas enters one end of the inner-environment-friendly fire outlet channel 25 through the outer ring air outlet 1121, and flows into the inner-environment-friendly fire outlet channel 212 through the gap, and the other end of the inner-environment-friendly fire outlet channel 25 is provided with a sealing ball 27, and it can be understood that the sealing ball 27 can be a sealing steel ball.

In one embodiment, two annular platforms are sequentially arranged on the inner wall of the distribution chamber 11 along the axial direction, and each annular platform is located between two adjacent air inlets 111. The two annular lands are a first annular land 113 and a second annular land 114, respectively, the first annular land 113 being disposed between the outer ring air inlet 1111 and the inner ring air inlet 1112, and the second annular land 114 being disposed between the inner ring air inlet 1112 and the ignition air inlet 1113.

In order to improve the isolation and sealing effect, the sealing structure 15 comprises two sealing gaskets which are sequentially arranged on the switch valve core 12 along the axial direction, and each sealing gasket is respectively abutted and sealed with a corresponding annular platform under the state of pressing ignition. That is, the two sealing gaskets include a first sealing gasket 151 and a second sealing gasket 152, and in a press-ignition state, the first sealing gasket 151 seals against the first annular land 113, and the second sealing gasket 152 seals against the second annular land 114. Furthermore, a positioning groove is formed in the periphery of the switch valve core 12, and the sealing washer is sleeved on the positioning groove.

Specifically, a collar 115 is fixedly stacked on the first annular table 113, and a rounded sealing surface 1151 which is in sealing contact with the first sealing gasket 151 is provided on the collar 115. The second annular table 114 has a sloped sealing surface 1141 that gradually sinks from the outside to the inside, and the corresponding sealing gasket is pressed against the sloped sealing surface 1141 in a press-fire state. The radiused sealing surface 1151 and the inclined sealing surface 1141 are axial seals, it being understood that radial seals may also be achieved by varying the outer diameter of the sealing gasket in sealing engagement with the inner wall of the plenum chamber 11.

It is understood that the first annular table 113 may also take the form of the second annular table 114, or that the second annular table 114 may also take the form of the first annular table 113.

In order to prevent the gas from leaking through the connection between the switch valve core 12 and the gas distribution chamber 11, in one embodiment, a sealing component 19 in sliding sealing fit with the inner wall of the gas distribution chamber 11 is installed on the switch valve core 12 at the end far away from the gas inlet 13, and a positioning step 116 in fit with the sealing component 19 is arranged on the inner wall of the gas distribution chamber 11 to realize axial limiting. Specifically, the positioning step 116 is adjacent to the outer ring air supply hole 16 in the axial direction.

The seal assembly 19 includes a ferrule 191, two pressure plates, a return spring, an outer seal ring 192, and an inner seal ring 193. The ferrule 191 is slidably mounted on the outer periphery of the switch valve core 12, the outer sealing ring 192 is fixed on the outer periphery of the ferrule 191 and matched with the inner wall of the gas distribution chamber 11, and the inner sealing ring 193 is fixed on the inner edge of the ferrule 191 and matched with the switch valve core 12. The inner sealing ring 193 cooperates with the outer sealing ring 192 to enclose the gas distribution chamber 11.

The two pressure plates are respectively positioned at two axial sides of the ferrule 191 and fixed on the switch valve core 12, and the return spring is abutted between the ferrule 191 and each pressure plate at the corresponding side. The two pressing plates comprise a first pressing plate 194 and a second pressing plate 195 which are sequentially arranged from top to bottom along the axial direction, and the return spring comprises a first return spring 198 and a second return spring 199 which are sequentially arranged from top to bottom along the axial direction. The two axial sides of the ferrule 191 are provided with return springs which can compensate each other, and the ferrule 191 can be kept in a reasonable movement interval in the movement process. The second sealing washer 152 is further driven by the second return spring 199 against the second annular table 114 on the inner wall of the gas distribution chamber 11 to ensure the sealing effect. The second sealing washer 152 is uniformly deformed by the force applied by the second pressing plate 195, and the sealing effect is better.

Further, a third pressure plate 196 abutting against the inner sealing ring 193 is arranged on the top of the collar 191, correspondingly, a corresponding limit step 197 is arranged on the collar 191 to axially limit the third pressure plate 196, and a first return spring 198 is connected between the third pressure plate 196 and the first pressure plate 194.

Further, the switch core 12 is provided with a positioning ring 153, the positioning ring 153 abuts against the top of the first pressing plate 194, and the positioning ring 153 may be, for example, an E-ring. As shown in fig. 1, an E-ring is installed on the switch spool 12, a first pressure plate 194 is installed below the E-ring, an inner sealing ring 193 abuts against a third pressure plate 196, a first return spring 198 abuts between the first pressure plate 194 and the third pressure plate 196, and a limit step 197 for limiting the limit position of the third pressure plate 196 is arranged on the ferrule 191.

According to the gas plug valve 100 convenient for adjusting the ventilation volume, when the valve is opened, the valve rod 14 is pressed downwards to trigger the ignition device, meanwhile, the switch valve core 12 is driven to be pressed downwards, the first return spring 198 pushes the ferrule 191 to abut against the positioning step 116, and under the action of the outer sealing ring 192 and the inner sealing ring 193, the gas distribution cavity 11 above the outer ring gas supply hole 16 is sealed. During the process of pressing down the switch valve core 12, the first sealing washer 151 will abut against the fillet sealing surface 1151 of the lantern ring 115, the second sealing washer 152 will abut against the second annular table 114, only the ignition air supply hole 18 is communicated with the air inlet hole 13, meanwhile, the switch valve core 12 triggers the electromagnetic valve in the valve body 20 to be in an open air supply state, the fuel gas entering the air distribution chamber 11 can only enter the ignition air supply hole 18 through the air inlet hole 13, the limiting plate 141 crosses the spatial interference of the fixing plate 22, the valve rod 14 can rotate, the air inlet hole 13 is communicated with the ignition air supply hole 18 and is communicated with the air outlet channel 21 on the valve body 20, the air inlet hole 13 supplies air, and the total air outlet amount.

After the valve rod 14 is loosened, the switch valve core 12 moves upwards to reset, the downward pressure is eliminated, the first sealing washer 151 is separated from the round corner sealing surface 1151 of the lantern ring 115, the second sealing washer 152 is separated from the second annular table 114, so that the inner ring air supply hole 17 and the outer ring air supply hole 16 are both communicated with the air inlet hole 13 and are respectively communicated to the air outlet channel 21, gas enters, and the inner ring and the outer ring are both converted into a normal gas supply state.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.