Gas valve

Abstract

A valve body is provided with a gas inlet cavity and a gas outlet cavity, a gas inlet channel is formed in the side wall of the gas inlet cavity, and a gas outlet channel is formed in the side wall of the gas outlet cavity; the valve rod assembly is movably installed in the air inlet cavity. The electromagnetic valve core is mounted in the air outlet cavity; wherein an abutting portion is arranged at the lower end of the valve rod assembly, the diameter of the abutting portion is gradually reduced from top to bottom, the electromagnetic valve element is provided with a movable portion extending to the air inlet cavity, the movable portion is located below the abutting portion, and in the transverse direction, the diameter of the movable portion is gradually reduced in the direction close to the air inlet cavity; when the valve rod assembly moves downwards relative to the valve body, the abutting part can abut against the movable part and push the movable part to move to be close to the air outlet cavity, and the movable part can trigger the electromagnetic valve element to control the air inlet cavity to be communicated with the air outlet channel. Compared with the prior art, the gas valve has the advantages that the matching structure between the pressing part and the movable part is simpler, the required mounting space is smaller, and the overall size of the gas valve is favorably reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a gas valve. Background Technology

[0002] Existing gas valves typically include a valve body with an inlet chamber and an outlet chamber. The inlet chamber has an inlet channel on its side wall, and a valve core rotatably mounted inside the first valve core to control the opening or closing of the inlet channel. A valve stem that can drive the valve core to rotate is also installed in the inlet chamber. The outlet chamber has an outlet channel on its side wall, and an electromagnetic valve core that can control the opening or closing of the outlet channel is installed inside the outlet chamber. A transmission component is also installed between the inlet and outlet chambers. A first flap is located on the side of the transmission component near the inlet chamber, and a second flap is located on the side of the transmission component near the outlet chamber. When the valve stem is pressed down, the valve stem can press down against the first flap and drive the transmission component to rotate, so that the second flap can press against the electromagnetic valve core and trigger the electromagnetic valve core to open the outlet channel. Thus, by rotating the valve core to open the inlet channel, the gas can be ignited.

[0003] However, in the above structure, the transmission component is relatively complex and increases the number of parts in the valve body, making the structure of the gas valve more complex. In addition, the transmission component is equipped with two paddles, which requires a large installation space for the transmission component, thus significantly increasing the overall size of the gas valve. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a gas valve that can drive a solenoid valve core to open the gas outlet channel, and has a simple structure, which helps to reduce the size of the gas valve.

[0005] A gas valve according to an embodiment of the present invention includes: a valve body having an inlet chamber and an outlet chamber, the inlet chamber being arranged vertically, the outlet chamber being arranged horizontally and communicating with the lower end of the inlet chamber, an inlet channel being formed in the side wall of the inlet chamber, and an outlet channel being formed in the side wall of the outlet chamber; a valve core being rotatably mounted in the inlet chamber and capable of controlling the opening or closing of the inlet channel; a valve stem assembly being movably mounted in the inlet chamber and passing through the valve core vertically, the valve stem assembly being capable of moving downward relative to the valve body and driving the valve core to rotate relative to the valve body; and a solenoid valve core being mounted in the outlet chamber and capable of... The valve stem assembly controls the connection or disconnection between the air outlet channel and the air inlet chamber. The lower end of the valve stem assembly has a pressure-retaining portion whose diameter gradually decreases from top to bottom. The solenoid valve core has a movable portion extending into the air inlet chamber, located below the pressure-retaining portion. In the lateral direction, the diameter of the movable portion gradually decreases towards the air inlet chamber. When the valve stem assembly moves downward relative to the valve body, the pressure-retaining portion abuts against the movable portion and pushes it to move laterally towards the air outlet chamber. The movable portion triggers the solenoid valve core to control the connection between the air inlet chamber and the air outlet channel.

[0006] The gas valve according to the embodiment of this utility model has at least the following beneficial effects:

[0007] By employing the gas valve of this utility model embodiment, a pressure-retaining part is provided at the lower end of the valve stem assembly, and a movable part is provided at the end of the solenoid valve core near the air inlet chamber. In use, when the valve stem assembly is pressed down, the valve stem assembly can drive the pressure-retaining part to move downward to press against the movable part. Since the diameter of the pressure-retaining part gradually decreases from top to bottom, and the diameter of the movable part gradually decreases along the direction close to the air inlet chamber, the movable part can move laterally towards the air outlet chamber under the pressure of the pressure-retaining part, and trigger the solenoid valve core. This allows the solenoid valve core to control the connection between the air inlet chamber and the air outlet channel. Then, the valve stem assembly drives the valve core to rotate and open the air inlet channel, so that the gas can flow from the air inlet channel through the air inlet chamber, the air outlet chamber, and the air outlet channel in sequence, thereby realizing the gas outlet and ignition. In the gas valve of this utility model embodiment, the gas outlet passage can be opened by the cooperation of the pressure part and the movable part. Compared with the prior art, the structure of the movable part is more flexible and lightweight, the cooperation between the pressure part and the movable part is simpler, it is convenient to manufacture, and the required installation space is smaller, which helps to reduce the overall size of the gas valve and makes the installation and use of the gas valve more convenient.

[0008] According to some embodiments of this utility model, the air outlet chamber has a first communication port at one end near the air inlet chamber, which communicates with the lower end of the air inlet chamber. The movable part is located on the side of the first communication port near the air inlet chamber. The side wall of the air outlet chamber has a second communication port that communicates with the air outlet channel. The solenoid valve core has a blocking part on the side near the air inlet chamber. The blocking part presses against the periphery of the first communication port and blocks the first communication port. The movable part can move closer to the first communication port under the pressure of the pressing part and push the blocking part to move and open the first communication port. Alternatively, the blocking part presses against the periphery of the second communication port and blocks the second communication port. The movable part can move closer to the first communication port under the pressure of the pressing part and push the blocking part to move and open the second communication port.

[0009] According to some embodiments of the present invention, the sealing part has a connecting post passing through the first communication port, the movable part is disposed at the end of the connecting post away from the air outlet chamber, and the movable part can push the connecting post and drive the sealing part to move and open the first communication port under the pressure of the pressing part.

[0010] According to some embodiments of the present invention, the movable part, the sealing part, and the connecting column are an integral structure, and the outer peripheral wall of the movable part is an arc surface with a diameter that gradually decreases along the direction close to the air intake cavity.

[0011] According to some embodiments of the present invention, the bottom of the air intake chamber is provided with a connecting channel that communicates with the first connecting port. The connecting channel is arranged in a transverse direction and is located on the side of the valve stem assembly near the air outlet chamber. The connecting post passes through the connecting channel. The movable part protrudes at least partially from the end of the connecting channel away from the air outlet chamber and is located below the pressing part. The movable part can move along the connecting channel and approach the air outlet chamber under the pressing action of the pressing part, and push the sealing part to open the first connecting port.

[0012] According to some embodiments of the present invention, the bottom of the air inlet chamber is provided with a communication channel connected to the first communication port. The communication channel is arranged in a transverse direction and located on the side of the valve stem assembly near the air outlet chamber. The movable part is a ball movably installed in the communication channel. The ball protrudes from the end of the communication channel away from the air outlet chamber and is located below the pressure part. The ball can move and abut against the sealing part under the pressure of the pressure part and push the sealing part to open the first communication port.

[0013] According to some embodiments of the present invention, the outer peripheral wall of the pressing part is a conical surface with a diameter that gradually decreases from top to bottom.

[0014] According to some embodiments of the present invention, the valve stem assembly includes: a pressure rod, installed in the air intake chamber and extending upward to the outside of the valve body, the pressure rod having a limiting structure capable of abutting against the inner top wall of the air intake chamber, a first elastic element installed between the limiting structure and the valve core, the pressure rod also having at least one downwardly extending insertion portion, the valve core having slots corresponding to the insertion portions, when the insertion portion moves downward with the pressure rod and is inserted into the slot, the pressure rod can drive the valve core to rotate synchronously and open or close the air intake passage; a push pin, inserted at the lower end of the pressure rod and capable of moving downward with the pressure rod, the push pin passing through the valve core and extending downward to below the valve core, a second elastic element installed between the push pin and the valve core, and a pressing portion located at the lower end of the push pin.

[0015] According to some embodiments of the present invention, the inner wall of the air intake cavity is provided with an inwardly protruding guide portion, and the guide portion is provided with a guide hole for the ejector pin to pass through.

[0016] According to some embodiments of this utility model, the valve core has an installation hole for the ejector pin to pass through. A sealing ring is also installed on the upper side of the installation hole, which is sleeved on the outer periphery of the ejector pin and has an interference fit with the ejector pin. A pressure plate is installed above the sealing ring, and the pressure plate presses down against the sealing ring. The sealing ring can prevent gas from passing through the installation hole from bottom to top.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the gas valve according to an embodiment of the present utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of a gas valve according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional schematic diagram of a gas valve according to another embodiment of the present invention;

[0022] Figure 4 for Figure 3 A schematic diagram of the downward pressing cross-section of the valve stem assembly of the gas valve in the diagram.

[0023] Figure label:

[0024] Valve body 100, air inlet chamber 110, air inlet channel 111, valve core 112, guide part 113, sealing ring 114, pressure plate 115, air outlet chamber 120, air outlet channel 121, first connecting port 122, connecting channel 123, second connecting port 124;

[0025] Solenoid valve core 200, moving part 210, sealing part 220, connecting column 230;

[0026] Valve stem assembly 300, pressing part 310, pressing rod 320, limiting structure 321, first elastic element 322, insertion part 323, ejector pin 330, and second elastic element 331. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 4This utility model provides a gas valve, including a valve body 100, a valve core 112, a valve stem assembly 300, and a solenoid valve core 200. The valve body 100 has an inlet chamber 110 and an outlet chamber 120. The inlet chamber 110 is arranged vertically, and the outlet chamber 120 is arranged horizontally and connected to the lower end of the inlet chamber 110, wherein the horizontal direction is perpendicular to the vertical direction. An inlet channel 111 is formed on the side wall of the inlet chamber 110, and an outlet channel 121 is formed on the side wall of the outlet chamber 120. The valve core 112 is rotatably mounted in the inlet chamber 110 and can control the opening or closing of the inlet channel 111. The valve stem assembly 300 is movably mounted in the inlet chamber 110 and passes through the valve core 112 vertically. The valve stem assembly 300 can move downward relative to the valve body 100 and drive the valve core 112 to rotate relative to the valve body 100. The solenoid valve core 200 is mounted in the outlet chamber 120 and... It can control the connection or disconnection between the air outlet channel 121 and the air inlet chamber 110; wherein, the lower end of the valve stem assembly 300 is provided with a pressing part 310, the diameter of the pressing part 310 gradually decreases from top to bottom, the solenoid valve core 200 has a movable part 210 extending to the air inlet chamber 110, the movable part 210 is located below the pressing part 310, and in the lateral direction, the diameter of the movable part 210 gradually decreases along the direction close to the air inlet chamber 110; when the valve stem assembly 300 moves downward relative to the valve body 100, the pressing part 310 can abut against the movable part 210 and push the movable part 210 to move in the lateral direction close to the air outlet chamber 120, and the movable part 210 can trigger the solenoid valve core 200 to control the connection between the air inlet chamber 110 and the air outlet channel 121.

[0032] By employing the gas valve of this utility model embodiment, a pressure-blocking part 310 is provided at the lower end of the valve stem assembly 300, and a movable part 210 is provided at the end of the solenoid valve core 200 near the air intake chamber 110. In use, pressing down the valve stem assembly 300 causes the pressure-blocking part 310 to move downwards and press against the movable part 210. Since the diameter of the pressure-blocking part 310 gradually decreases from top to bottom, and the diameter of the movable part 210 gradually decreases along the direction near the air intake chamber 110, the movable part 210... The moving part 210 can move laterally towards the outlet chamber 120 under the pressure of the pressing part 310 and trigger the solenoid valve core 200, so that the solenoid valve core 200 can control the connection between the inlet chamber 110 and the outlet channel 121. Then, the valve core 112 is rotated by the valve stem assembly 300 to open the inlet channel 111, so that the gas can flow from the inlet channel 111 through the inlet chamber 110, the outlet chamber 120 and the outlet channel 121 in sequence, thereby realizing the gas outlet and ignition. In the gas valve of this utility model embodiment, the transmission rod and two paddles structure of the prior art are eliminated. Only a pressure part 310 is provided at the lower end of the valve stem assembly 300, and a movable part 210 is provided on the side of the solenoid valve core 200 near the air inlet chamber 110. The opening of the gas outlet passage 121 can be realized by the cooperation of the pressure part 310 and the movable part 210. Compared with the prior art, the structure of the movable part 210 is more flexible and lightweight, the cooperation between the pressure part 310 and the movable part 210 is also simpler, which is convenient for manufacturing and requires less installation space, which helps to reduce the overall size of the gas valve and makes the installation and use of the gas valve more convenient.

[0033] Reference Figures 1 to 4 In some embodiments, the air outlet chamber 120 has a first communication port 122 at one end near the air inlet chamber 110, which communicates with the lower end of the air inlet chamber 110. The side wall of the air outlet chamber 120 has a second communication port 124 that communicates with the air outlet channel 121. The movable part 210 is located on the side of the first communication port 122 near the air inlet chamber 110. The solenoid valve core 200 has a blocking part 220 on the side near the air inlet chamber 110. The blocking part 220 presses against the periphery of the first communication port 122 and blocks the first communication port 122. The movable part 210 can move closer to the first communication port 122 under the pressing action of the pressing part 310 and push the blocking part 220 to move and open the first communication port 122.

[0034] In the above structure, by opening a first connecting port 122 at one end of the air outlet chamber 120 near the air inlet chamber 110, the solenoid valve core 200 can control the opening or closing of the first connecting port 122 through the sealing part 220, thereby realizing the connection and disconnection between the air outlet channel 121 and the air inlet chamber 110. During use, the valve stem assembly 300 is pressed down, which drives the pressing part 310 to move downward to press against the movable part 210. Under the pressing action of the pressing part 310, the movable part 210 moves laterally to approach the first connecting port 122 and pushes the blocking part 220 to move and open the first connecting port 122, so that the air inlet chamber 110 and the air outlet chamber 120 are connected to each other. Thus, the air outlet channel 121 is connected to the air inlet chamber 110. Then, the valve stem assembly 300 drives the valve core 112 to rotate and open the air inlet channel 111, so that the air inlet channel 111 and the air outlet channel 121 can be connected to realize the gas outlet and ignition. The structure is simple and easy to process and manufacture.

[0035] It is understandable that, in order to achieve the connection and disconnection between the air outlet channel 121 and the air inlet chamber 110, in addition to controlling the opening and closing of the first connecting port 122 by the blocking part 220, in some embodiments, the connection and disconnection can also be achieved by controlling the opening and closing of the second connecting port 124 by the blocking part 220. Specifically, the blocking part 220 presses against the periphery of the second connecting port 124 and blocks the second connecting port 124. The movable part 210 can move closer to the first connecting port 122 under the pressure of the pressing part 310 and push the blocking part 220 to move and open the second connecting port 124. Thus, the solenoid valve core 200 can control the opening or closing of the second connecting port 124 by the blocking part 220, thereby achieving the connection and disconnection between the air outlet channel 121 and the air inlet chamber 110.

[0036] Reference Figure 2 In some embodiments, the blocking part 220 has a connecting post 230 passing through the first communication port 122, and a movable part 210 is provided at one end of the connecting post 230 away from the air outlet 120. The movable part 210 can push the connecting post 230 and drive the blocking part 220 to move and open the first communication port 122 under the pressure of the pressing part 310.

[0037] In the above structure, when the pressing part 310 moves downward, it can push the movable part 210 to move closer to the gas outlet chamber 120. The movable part 210 can then drive the sealing member to move and open the first connecting port 122 via the connecting post 230. Specifically, by providing the connecting post 230 through the first connecting port 122 on the sealing part 220, and directly placing the movable part 210 on the end of the connecting post 230 away from the gas outlet chamber 120, the travel distance of the pressing part 310 to move downward to open the first connecting port 122 can be shortened. This reduces the vertical dimension of the air inlet chamber 110, further reducing the overall size of the gas valve and making its installation easier. Furthermore, the connecting post 230 allows the movable part 210 to accurately push the sealing member to open the first connecting port 122 during movement, resulting in more precise and stable operation of the gas valve.

[0038] Reference Figure 2 In some embodiments, the movable part 210, the sealing part 220, and the connecting column 230 are integrated into one piece. This reduces the number of parts within the valve body 100, facilitates the installation and assembly of the various parts, and also simplifies the manufacturing of the movable part 210, the sealing part 220, and the connecting column 230. Furthermore, it makes the connection between the three parts more robust and stable, thereby improving the structural stability of the gas valve.

[0039] Reference Figure 2 In some embodiments, the outer peripheral wall of the movable part 210 is an arc surface with a diameter that gradually decreases along the direction close to the air intake chamber 110. By setting the outer peripheral wall of the movable part 210 facing the air intake chamber 110 as an arc surface, the surface of the movable part 210 is made smoother, which makes it easier for the pressing part 310 to push the movable part 210 closer to the air outlet chamber 120 more smoothly when it moves downward, thus reducing the risk of jamming between the pressing part 310 and the movable part 210.

[0040] Reference Figure 2 In some embodiments, the bottom of the air intake chamber 110 is provided with a connecting channel 123 that communicates with the first connecting port 122. The connecting channel 123 is arranged in the lateral direction and is located on the side of the valve stem assembly 300 near the air outlet chamber 120. The connecting post 230 passes through the connecting channel 123. The movable part 210 protrudes at least partially from the end of the connecting channel 123 away from the air outlet chamber 120 and is located below the pressing part 310. The movable part 210 can move along the connecting channel 123 and approach the air outlet chamber 120 under the pressing action of the pressing part 310, and push the sealing part 220 to open the first connecting port 122.

[0041] In the above structure, the connection channel 123 can limit and guide the movement of the movable part 210 and the connecting post 230. When the pressing part 310 moves downward to press against the movable part 210, the movable part 210 and the connecting post 230 can move along the connection channel 123 and drive the sealing part 220 to open the first connection port 122. This can reduce the risk of the movable part 210 and the connecting post 230 deviating during the movement, which is conducive to ensuring the normal operation of the gas valve.

[0042] Reference Figure 3 and Figure 4 In some embodiments, the bottom of the air intake chamber 110 is provided with a communication channel 123 that communicates with the first communication port 122. The communication channel 123 is arranged in the lateral direction and is located on the side of the valve stem assembly 300 near the air outlet chamber 120. The movable part 210 is a ball that is movably installed in the communication channel 123. The ball protrudes from the end of the communication channel 123 away from the air outlet chamber 120 and is located below the pressure part 310. The ball can move and abut against the sealing part 220 under the pressure of the pressure part 310 and push the sealing part 220 to open the first communication port 122.

[0043] In the above structure, by directly configuring the movable part 210 as a ball movably installed within the connecting channel 123, the connecting channel 123 can guide the ball to move laterally closer to the gas outlet chamber 120 and push the sealing part 220 to open the first connecting port 122. This reduces the risk of the ball shifting during movement, which is beneficial to ensuring the normal operation of the gas valve. Furthermore, when the ball is pressed by the pressing part 310, it can also roll, thereby converting the sliding friction between the movable part 210 and the pressing part 310 into rolling friction. This reduces the pressure required for the pressing part 310 to press against the movable part 210 and push the movable part 210 to move, making the use of the gas valve easier and less strenuous.

[0044] Reference Figures 2 to 4 In some embodiments, the outer peripheral wall of the pressing part 310 is a conical surface with a diameter that gradually decreases from top to bottom. This makes the contact surface between the pressing part 310 and the movable part 210 smoother, which makes it easier for the pressing part 310 to push the movable part 210 closer to the air outlet 120 more smoothly when it moves downward. This helps to reduce the risk of jamming between the pressing part 310 and the movable part 210.

[0045] Reference Figures 1 to 4In some embodiments, the valve stem assembly 300 includes a pressure rod 320 and a pin 330. The pressure rod 320 is mounted in the intake chamber 110 and extends upward to the outside of the valve body 100. The pressure rod 320 has a limiting structure 321 that can abut against the inner top wall of the intake chamber 110. A first elastic element 322 is installed between the limiting structure 321 and the valve core 112. The pressure rod 320 also has at least one downwardly extending insertion portion 323. The valve core 112 has slots that correspond one-to-one with the insertion portions 323. When the insertion portion 323 is inserted... The connecting part 323 moves downward with the pressure rod 320 and is inserted into the slot. The pressure rod 320 can drive the valve core 112 to rotate synchronously and open or close the air intake channel 111. The ejector pin 330 is inserted into the lower end of the pressure rod 320 and can move downward with the pressure rod 320. The ejector pin 330 passes through the valve core 112 and extends downward to the bottom of the valve core 112. A second elastic element 331 is installed between the ejector pin 330 and the valve core 112. The pressing part 310 is provided at the lower end of the ejector pin 330.

[0046] In the above structure, the valve stem assembly 300 is divided into a pressure rod 320 and a push pin 330. The push pin 330 is inserted into the lower end of the pressure rod 320. When the pressure rod 320 is pressed down, the pressure rod 320 can push the push pin 330 to move downward synchronously. At this time, the first elastic element 322 and the second elastic element 331 are compressed and deformed. The pressing part 310 at the lower end of the push pin 330 can press against the movable part 210 and push the movable part 210 to move in the lateral direction, and trigger the solenoid valve core 200 to control the air outlet channel 121 to connect with the air inlet chamber 110. When the pressure rod 320 is released, the pressure rod 320 can move upward under the elastic action of the first elastic element 322 until the limiting structure 321 abuts against the inner top wall of the air inlet chamber 110. The push rod can move upward under the elastic action of the second elastic element 331 until it abuts against the pressure rod 320.

[0047] Reference Figures 2 to 4 In some embodiments, the limiting structure 321 may specifically include a protrusion (not shown in the figure) provided on the outer periphery of the pressure rod 320. In addition, the limiting structure 321 may also include a limiting sleeve (not shown in the figure) sleeved on the outer periphery of the pressure rod 320 and located below the protrusion. The first elastic member 322 is located below the limiting sleeve and pushes the limiting sleeve upward to abut against the protrusion.

[0048] It is understandable that the first elastic element 322 and the second elastic element 331 can both be made of compression springs or rubber parts or other elastic structures.

[0049] Reference Figures 2 to 4 In some embodiments, the inner wall of the air intake chamber 110 is provided with an inwardly protruding guide portion 113, and the guide portion 113 has a guide hole for the ejector pin 330 to pass through.

[0050] In the above structure, the guide part 113 can guide the ejector pin 330 to move in the vertical direction, so as to prevent the ejector pin 330 from deviating during the movement and failing to abut against the movable part 210.

[0051] It is understood that when the bottom of the air intake chamber 110 is also provided with a connecting channel 123, the guide part 113 can be provided above the connecting channel 123 and arranged at intervals from the connecting channel 123, or the guide part 113 can also be directly used as part of the side wall of the connecting channel 123. This utility model does not make specific limitations on this.

[0052] Reference Figures 2 to 4 In some embodiments, the valve core 112 has an installation hole for the ejector pin 330 to pass through. A sealing ring 114 is also installed on the upper side of the installation hole, which is sleeved on the outer periphery of the ejector pin 330 and has an interference fit with the ejector pin 330. A pressure plate 115 is installed above the sealing ring 114, and the pressure plate 115 presses down against the sealing ring 114. The sealing ring 114 can prevent gas from passing through the installation hole from bottom to top.

[0053] In the above structure, the sealing ring 114 can seal between the ejector pin 330 and the valve core 112, preventing the gas flowing in from the air inlet channel 111 from flowing upward through the mounting hole and flowing out of the valve body 100 from the outer periphery of the valve stem, thereby reducing the risk of gas leakage and improving the sealing performance and safety of the gas valve.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. Gas valve, characterized in that The utility model relates to a valve body (100) has air inlet cavity (110) and air outlet cavity (120), air inlet cavity (110) is arranged along up and down direction, air outlet cavity (120) is arranged along transverse direction and is communicated with the lower end of air inlet cavity (110), the side wall of air inlet cavity (110) is provided with air inlet channel (111), the side wall of air outlet cavity (120) is provided with air outlet channel (121), Valve core (112) is rotatably installed in air inlet cavity (110) and can control the opening or closing of air inlet channel (111), Valve rod assembly (300) is movably installed in air inlet cavity (110) and is arranged along up and down direction in valve core (112), valve rod assembly (300) can be moved downwards relative to valve body (100) and drive valve core (112) relative to valve body (100) rotation, Electromagnetic valve core (200) is installed in air outlet cavity (120) and can control the communication or disconnection of air outlet channel (121) and air inlet cavity (110), Wherein, the lower end of valve rod assembly (300) is provided with abutting portion (310), the diameter of abutting portion (310) gradually decreases from top to bottom, electromagnetic valve core (200) has movable part (210) extending to air inlet cavity (110), movable part (210) is located below abutting portion (310), in transverse direction, the diameter of movable part (210) gradually decreases along the direction close to air inlet cavity (110), When valve rod assembly (300) is moved downwards relative to valve body (100), abutting portion (310) can abut movable part (210) and push movable part (210) to move close to air outlet cavity (120) in transverse direction, movable part (210) can trigger electromagnetic valve core (200) to control the communication of air inlet cavity (110) and air outlet channel (121). The end of air outlet cavity (120) close to air inlet cavity (110) is provided with first communication port (122) communicated with the lower end of air inlet cavity (110), movable part (210) is located on the side of first communication port (122) close to air inlet cavity (110), the side wall of air outlet cavity (120) has second communication port (124) communicated with air outlet channel (121), 2. Gas valve according to claim 1, characterized in that The side of electromagnetic valve core (200) close to air inlet cavity (110) has plugging part (220), Plugging part (220) abuts the circumference of first communication port (122) and blocks first communication port (122), movable part (210) can move close to first communication port (122) under the abutting action of abutting portion (310) and push plugging part (220) to move and open first communication port (122), ​ Or the blocking part (220) is pressed against the periphery of the second communication port (124) and blocks the second communication port (124), and the movable part (210) can be moved close to the first communication port (122) under the pressing action of the pressing part (310) and push the blocking part (220) to open the second communication port (124).

3. Gas valve according to claim 2, characterized in that The blocking part (220) has a connecting column (230) passing through the first communication port (122), and the movable part (210) is arranged at one end of the connecting column (230) away from the air outlet cavity (120), and the movable part (210) can push the connecting column (230) and drive the blocking part (220) to move to open the first communication port (122) under the pressing action of the pressing part (310).

4. Gas valve according to claim 3, characterized in that The movable part (210), the blocking part (220) and the connecting column (230) are of an integrated structure, and the outer peripheral wall of the movable part (210) is a circular arc surface with a diameter gradually decreasing along the direction close to the air inlet cavity (110).

5. Gas valve according to claim 3, characterized in that The bottom of the air inlet cavity (110) is provided with a communication channel (123) communicating with the first communication port (122), the communication channel (123) is arranged in a transverse direction and located on the side of the valve rod assembly (300) close to the air outlet cavity (120), the connecting column (230) passes through the communication channel (123), and the movable part (210) at least partially protrudes from one end of the communication channel (123) away from the air outlet cavity (120) and is located below the pressing part (310). The movable part (210) can move close to the air outlet cavity (120) along the communication channel (123) under the pressing action of the pressing part (310), and push the blocking part (220) to open the first communication port (122).

6. The gas valve of claim 2, wherein The bottom of the air inlet cavity (110) is provided with a communication channel (123) communicating with the first communication port (122), the communication channel (123) is arranged in a transverse direction and located on the side of the valve rod assembly (300) close to the air outlet cavity (120), the movable part (210) is a ball body movably installed in the communication channel (123), the ball body partially protrudes from one end of the communication channel (123) away from the air outlet cavity (120) and is located below the pressing part (310). The ball body can be moved to abut against the blocking part (220) under the pressing action of the pressing part (310) and push the blocking part (220) to open the first communication port (122).

7. The gas valve of claim 1, wherein The outer peripheral wall of the pressing part (310) is a conical surface with a diameter gradually decreasing from top to bottom.

8. The gas valve of claim 1, wherein The valve rod assembly (300) comprises: A pressing rod (320) is installed in the air inlet cavity (110) and extends upward to outside of the valve body (100), the pressing rod (320) is provided with a limiting structure (321) capable of abutting against the inner top wall of the air inlet cavity (110), the limiting structure (321) and the valve core (112) are installed with a first elastic member (322), the pressing rod (320) is further provided with at least one downward extending plug-in part (323), the valve core (112) is provided with a plug groove corresponding to the plug-in part (323), when the plug-in part (323) moves downward along with the pressing rod (320) and is inserted into the plug groove, the pressing rod (320) can drive the valve core (112) to rotate synchronously and open or close the air inlet passage (111); A thimble (330) is inserted into the lower end of the pressing rod (320) and can move downward along with the pressing rod (320), the thimble (330) penetrates the valve core (112) and extends downward below the valve core (112), the thimble (330) and the valve core (112) are installed with a second elastic member (331), and the pressing part (310) is arranged at the lower end of the thimble (330).

9. Gas valve according to claim 8, characterized in that The inner wall of the air inlet cavity (110) is provided with an inwardly protruding guide part (113), the guide part (113) is provided with a guide hole for the thimble (330) to move and penetrate.

10. Gas valve according to claim 8, characterized in that The valve core (112) is internally provided with a mounting hole for the thimble (330) to penetrate, the upper side of the mounting hole is further installed with a sealing ring (114) sleeved on the outer periphery of the thimble (330) and in interference fit with the thimble (330), the upper side of the sealing ring (114) is installed with a pressing sheet (115), the pressing sheet (115) downwardly abuts against the sealing ring (114), and the sealing ring (114) can prevent gas from penetrating upward through the mounting hole.

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