Gas cock and gas appliance

Abstract

The utility model relates to a gas equipment technical field discloses a gas plug valve and gas equipment, due to along the gas flow direction in the gas channel, the diameter of outer conical surface and inner conical surface all gradually reduces, and the valve core elastic piece is used to exert the force along the gas flow direction in the gas channel to plug valve core, make the gas in the gas channel and the force direction of valve core elastic piece exerted to plug valve core same, therefore, the gas in the gas channel exerts to plug valve core's force, not only will not make outer conical surface and inner conical surface separate, still will make outer conical surface and inner conical surface adhere more closely, realize no matter gas import's inlet pressure size, two taper surfaces can always keep abutment cooperation, thereby effectively solve the problem that outer conical surface and inner conical surface separate when inlet pressure is bigger in the prior art and make gas leak through the gap between outer conical surface and inner conical surface, improve the versatility of gas plug valve.

Description

Technical Field

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

[0002] In related technologies, a gas plug valve includes a valve body with a gas passage, and a plug valve assembly and a solenoid valve assembly both disposed within the valve body. The plug valve assembly includes a plug rod, a plug valve core, and a plug spring. When the gas plug valve is in the closed state, the solenoid valve core of the solenoid valve assembly cuts off the gas inlet and gas passage on the valve body, and the plug valve core cuts off the gas outlet and gas passage on the valve body.

[0003] When the gas plug valve needs to be opened, first press the plug rod to push the solenoid valve core to move axially, so that the gas inlet and gas passage on the valve body are connected, and control the solenoid valve assembly to be energized to hold the plug rod; then turn the plug rod to drive the plug valve core to rotate, so that the gas outlet and gas passage on the valve body are connected, thereby connecting the gas inlet through the gas passage and gas outlet.

[0004] A return spring is located at the end of the plug valve core furthest from the solenoid valve core. The return spring is sleeved on the plug rod and sandwiched between the stepped surface of the plug rod and the plug valve core. When the gas plug valve needs to be closed, the plug rod is rotated in the reverse direction to the set position. During this process, the plug rod synchronously drives the plug valve core to rotate, cutting off the gas outlet and gas passage. Under the action of the return spring, the plug rod will move away from the solenoid valve core, and the solenoid valve core will reset to cut off the gas inlet and gas passage, thus de-energizing the solenoid valve assembly.

[0005] The outer peripheral wall of the plug valve core has a conical sealing surface. Along the axial direction of the plug rod from the side where the plug rod is located to the side where the solenoid valve core is located, the cross-section of the plug valve core perpendicular to its own central axis gradually decreases. When the gas plug valve is in the closed state, the force applied to the plug valve core by the return spring keeps the conical sealing surface and the inner wall of the conical hole in the valve body in contact, preventing gas leakage due to incomplete contact between the conical sealing surface and the inner wall of the conical hole in the valve body.

[0006] However, when the intake pressure is high and the gas plug valve is open, the force exerted by the return spring on the plug valve core may be less than the force exerted by the intake air on the plug valve core. This causes the plug valve core to move away from the solenoid valve core, which prevents the conical sealing surface from maintaining a proper fit with the inner wall of the conical orifice, resulting in air leakage. Utility Model Content

[0007] One of the technical problems solved by this utility model is to provide a gas plug valve that can improve the applicability of the gas plug valve while ensuring safety performance.

[0008] The second technical problem solved by this utility model is to provide a gas equipment that can prevent gas leakage and improve safety performance.

[0009] The first technical problem mentioned above is solved by the following technical solution:

[0010] A gas plug valve includes a plug valve assembly and a valve body. The valve body has a gas passage, and the valve body has a gas inlet and a gas outlet. The gas inlet is connected to the gas passage, and the gas outlet is connected to the outlet of the gas passage. The plug valve assembly includes:

[0011] A stopcock valve core is disposed within the gas passage. The outer peripheral wall of the stopcock valve core has an outer conical surface, and the inner wall of the gas passage has an inner conical surface. Along the airflow direction within the gas passage, the diameters of both the outer and inner conical surfaces gradually decrease. The central axis of the stopcock valve core extends axially along the outer conical surface. The stopcock valve core is capable of rotating relative to the valve body around its own central axis to selectively open or close the gas outlet.

[0012] The valve core elastic element is used to apply a force to the plug valve core along the airflow direction in the gas passage, so that the outer conical surface and the inner conical surface maintain an abutting fit.

[0013] The gas rotary valve described in this utility model has the following advantages compared with the prior art:

[0014] Because the diameters of both the outer and inner conical surfaces gradually decrease along the airflow direction within the gas passage, and the valve core elastic element applies a force to the plug valve core along the airflow direction within the gas passage, the gas in the gas passage and the force applied to the plug valve core by the valve core elastic element are in the same direction. Therefore, the force applied to the plug valve core by the gas in the gas passage not only prevents the outer and inner conical surfaces from separating, but also makes them fit more tightly. This ensures that the two conical surfaces always maintain abutting fit regardless of the inlet pressure of the gas, effectively solving the problem in the prior art where the outer and inner conical surfaces separate when the inlet pressure is high, causing gas leakage through the gap between the outer and inner conical surfaces, thus improving the versatility of the gas plug valve.

[0015] In one embodiment, the plug valve core is rotatable about the central axis of the outer conical surface, and the plug valve assembly further includes:

[0016] A plug rod has a first end and a second end disposed opposite to each other along the first direction, the second end being exposed outside the valve body, and the first end sealingly penetrating the plug valve core; the plug rod is axially movable relative to the plug valve core and can be restricted to rotate relative to the plug valve core.

[0017] A push rod elastic element is used to apply a force to the plug push rod in a first direction, the first direction being from the large diameter end of the outer conical surface to the small diameter end of the outer conical surface.

[0018] In one embodiment, both the push rod elastic element and the valve core elastic element are compression springs extending along the first direction;

[0019] The plug rod has a first limiting surface, the inner wall of the gas passage has a second limiting surface, and the plug valve core is located between the first limiting surface and the second limiting surface along the first direction;

[0020] The push rod elastic element is confined between the first limiting surface and the stop valve core along the first direction, and the valve core elastic element is confined between the second limiting surface and the stop valve core along the first direction.

[0021] In one embodiment, the plug valve core has a through hole extending along the first direction, and a limiting boss protrudes from the inner wall of the through hole.

[0022] One end of the push rod elastic element is placed in the through hole on one side of the limiting boss, and the valve core elastic element is placed in the through hole on the other side of the limiting boss.

[0023] In one embodiment, the limiting boss is an annular structure extending circumferentially along the plug valve core, the inner cavity of the annular structure forms a through hole for the plug rod to pass through, and a first sealing element is provided between the inner peripheral wall of the through hole and the outer peripheral wall of the plug rod.

[0024] In one embodiment, the inner peripheral wall of the through hole is provided with an annular groove, and one end of the annular groove passes through the limiting boss along the axial direction of the plug valve core.

[0025] The first sealing element is sandwiched radially between the bottom wall of the annular groove and the outer peripheral wall of the plug rod;

[0026] The gas rotary valve also includes a baffle plate, one side of which presses against the first sealing element, and the other side of which presses against the push rod elastic element or the valve core elastic element.

[0027] In one embodiment, the valve body includes a first valve body having the gas outlet and a second valve body having the gas inlet, the first valve body and the second valve body being sealed together;

[0028] The second limiting surface is located on the inner wall of the second valve body, the inner conical surface is located on the inner wall of the first valve body, and an assembly opening is formed at one end of the first valve body that connects to the second valve body. The plug valve core is installed into the first valve body along the first direction through the assembly opening.

[0029] In one embodiment, a second sealing element is provided between the outer conical surface and the inner conical surface, the second sealing element being located between the gas outlet and the large diameter end of the outer conical surface along the axial direction of the outer conical surface; and / or, a third sealing element is provided between the outer conical surface and the inner conical surface, the third sealing element being located between the gas outlet and the small diameter end of the outer conical surface along the axial direction of the outer conical surface.

[0030] In one embodiment, the through hole includes a through hole located on the side of the limiting boss near the elastic member of the push rod, and the plug valve core is provided with an outlet communicating with the through hole. The rotation of the plug valve core relative to the valve body can selectively connect or disconnect the outlet from the gas outlet.

[0031] The valve has at least two outlets, and all the outlets are arranged sequentially at intervals along the circumference of the valve core, with the opening area increasing or decreasing sequentially.

[0032] Alternatively, the air outlet is an arc-shaped hole extending circumferentially along the plug valve core. The arc-shaped hole has two communicating sidewalls arranged opposite each other along the axial direction of the outer conical surface. Along the extension direction of the arc-shaped hole, the distance between the two communicating sidewalls along the axial direction of the outer conical surface tends to increase or decrease.

[0033] The second technical problem mentioned above is solved by the following technical solution:

[0034] Gas appliances, including the gas rotary valve provided in any of the above embodiments.

[0035] Compared with the prior art, the gas equipment described in this utility model has the following advantages:

[0036] The gas equipment of this invention, by adopting the above-mentioned gas plug valve, ensures that the magnitude of the inlet pressure does not affect the sealing performance of the gas plug valve, thereby improving the safety performance of the gas equipment. Attached Figure Description

[0037] Figure 1 A schematic diagram of the structure of the gas plug valve provided in this embodiment of the utility model;

[0038] Figure 2 A first cross-sectional view of a gas rotary valve provided in an embodiment of this utility model;

[0039] Figure 3 A second sectional view of the gas rotary valve provided in an embodiment of this utility model;

[0040] Figure 4 A split sectional view of the gas plug valve provided in an embodiment of this utility model;

[0041] Figure 5 A schematic diagram of the structure of the plug valve core provided in this embodiment of the utility model;

[0042] Figure 6 A cross-sectional view of the plug valve assembly of the gas plug valve provided in an embodiment of this utility model;

[0043] Figure 7 A cross-sectional view of the first valve body with a plug valve core installed, provided for an embodiment of this utility model;

[0044] Figure 8 A schematic diagram showing the disassembly of the solenoid valve assembly, the second valve body, and the valve cap provided for an embodiment of this utility model;

[0045] Figure 9 A cross-sectional view of the solenoid valve assembly, the second valve body, and the valve cap provided for an embodiment of this utility model;

[0046] Figure 10 A diagram showing the change in the connection between the gas outlet and the gas outlet during the rotation of the valve core of the gas valve provided in this embodiment of the utility model.

[0047] Label Explanation:

[0048] 1. Valve body; 10. Gas passage; 11. First valve body; 111. Gas outlet; 112. Stop surface; 113. Assembly opening; 114. Inner conical surface; 12. Second valve body; 121. Gas inlet; 122. Pressure detection port; 123. Second limiting surface; 13. Valve cap;

[0049] 2. Plug valve assembly; 21. Plug valve core; 210. Through hole; 2101. First hole; 2102. Guide hole; 211. Limiting boss; 2111. Through hole; 2112. Annular groove; 212. Air outlet; 213. Slot; 214. Outer conical surface; 22. Plug push rod; 221. First limiting surface; 23. Push rod elastic element; 24. Valve core elastic element; 25. First sealing element; 26. Baffle; 27. Positioning element;

[0050] 3. Solenoid valve assembly; 31. Solenoid valve core; 32. Sealing plug; 33. Solenoid elastic element; 34. Mounting protrusion. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] This utility model provides a gas stopcock valve and a gas appliance, wherein the gas appliance includes a gas stopcock valve, which can improve the applicability of the gas stopcock valve while ensuring user experience. The gas appliance can be a gas heater, or a gas stove, gas oven, smokehouse, or other device that uses gas as fuel and requires the use of a gas stopcock valve.

[0056] like Figures 1 to 6As shown, the gas plug valve includes a plug valve assembly 2 and a valve body 1. The valve body 1 has a gas passage 10, a gas inlet 121, and a gas outlet 111. The gas inlet 121 and the gas outlet 111 are connected to the gas passage 10. The plug valve assembly 2 includes a plug valve core 21 and a valve core elastic element 24. The plug valve core 21 is located within the gas passage 10. The outer peripheral wall of the plug valve core 21 has an outer conical surface 214, and the inner wall of the gas passage 10 has an inner conical surface 114. Along the airflow direction within the gas passage 10, the diameters of both the outer and inner conical surfaces 214 gradually decrease. The central axis of the plug valve core 21 extends axially along the outer conical surface 214. The plug valve core 21 can rotate relative to the valve body 1 around its own central axis to selectively open or close the gas outlet 111. The valve core elastic element 24 is used to apply a force to the plug valve core 21 along the airflow direction in the gas passage 10, so that the outer conical surface 214 and the inner conical surface 114 maintain abutting fit.

[0057] When the gas plug valve is in the closed state, under the action of the valve core elastic element 24, the outer conical surface 214 of the outer periphery of the plug valve core 21 and the inner conical surface 114 of the inner wall of the valve body 1 maintain abutment fit.

[0058] Because the diameters of the outer conical surface 214 and the inner conical surface 114 gradually decrease along the airflow direction within the gas passage 10, and the valve core elastic element 24 applies a force to the plug valve core 21 along the airflow direction within the gas passage 10, the gas in the gas passage 10 and the force applied by the valve core elastic element 24 to the plug valve core 21 are in the same direction. The force applied by the gas in the gas passage 10 to the plug valve core 21 not only prevents the outer conical surface 214 and the inner conical surface 114 from separating, but also makes the outer conical surface 214 and the inner conical surface 114 fit more tightly. This ensures that the outer conical surface 214 and the inner conical surface 114 always maintain a contact fit regardless of the intake pressure of the gas inlet 121. This effectively solves the problem in the prior art where the outer conical surface 214 and the inner conical surface 114 separate when the intake pressure is high, causing gas leakage through the gap between the outer conical surface 214 and the inner conical surface 114, thus improving the versatility of the gas plug valve.

[0059] For example, along the axial direction of the outer conical surface 214, the gas inlet 121 is located between the large diameter end and the small diameter end of the outer conical surface 214, and the large diameter end of the outer conical surface 214 is located between the gas outlet 111 and the gas inlet 121.

[0060] In some embodiments, such as Figures 2 to 6As shown, the plug valve assembly 2 also includes a plug rod 22 and a rod elastic element 23. The plug rod 22 has a first end and a second end that are arranged opposite to each other along a first direction. The second end is exposed outside the valve body 1, and the first end sealably passes through the plug valve core 21. The plug rod 22 can move axially relative to the plug valve core 21 and can be restricted from rotating relative to the plug valve core 21. The rod elastic element 23 is used to apply a force to the plug rod 22 along the first direction, which is the direction from the large diameter end of the outer conical surface 214 to the small diameter end of the outer conical surface 214.

[0061] When the gas plug valve needs to be opened, the control plug rod 22 is moved in the opposite direction along the first direction to a position where it is restricted from rotating relative to the plug valve core 21. During this process, the push rod elastic element 23 is continuously compressed under the action of the plug rod 22, so that the push rod elastic element 23 accumulates elastic potential energy for the plug rod 22 to reset. Rotating the plug rod 22 causes the plug valve core 21 to rotate synchronously to a position that will open the gas outlet 111, thus opening the gas plug valve. When the gas plug valve needs to be closed, the control plug rod 22 is rotated in the opposite direction to a position where it can move axially relative to the plug valve core 21. The plug rod 22 will automatically move along the first direction under the action of the push rod elastic element 23 to achieve reset.

[0062] When the valve stem 22 is pressed to open the gas valve, the tactile feedback to the user is mainly the resistance provided by the stem elastic element 23. The setting of the valve core elastic element 24 has virtually no impact on the tactile feedback when the user presses the valve stem 22 during the process of opening the gas valve.

[0063] For example, both the push rod elastic element 23 and the valve core elastic element 24 are compression springs extending along a first direction. The plug push rod 22 has a first limiting surface 221, and the inner wall of the gas passage 10 has a second limiting surface 123. The plug valve core 21 is located between the first limiting surface 221 and the second limiting surface 123 along the first direction. The push rod elastic element 23 is limited to the first limiting surface 221 and the plug valve core 21 along the first direction, and the valve core elastic element 24 is limited to the second limiting surface 123 and the plug valve core 21 along the first direction. For example, the plug push rod 22 is a stepped rod, and one stepped surface of the stepped rod forms the aforementioned first limiting surface 221.

[0064] It should be noted that, without affecting the connection between the plug valve core 21 and the plug rod 22, as well as their operation, the push rod elastic element 23 can be clamped between the plug rod 22 and the limiting surface of the inner wall of the valve body 1, so that the push rod elastic element 23 can apply a force away from the plug valve core 21 in the first direction to the plug rod 22. As an alternative, the above-mentioned valve core elastic element 24 can also be a tension spring. The valve core elastic element 24 is located on the side of the plug valve core 21 away from the gas inlet 121. In this case, one end of the valve core elastic element 24 is connected to the plug valve core 21, and the other end is connected to the valve body 1. The valve core elastic element 24 is always in a stretched state, so that the restoring force of the valve core elastic element 24 can keep the outer conical surface 214 and the inner conical surface 114 in contact. The aforementioned push rod elastic element 23 can also be a tension spring. One end of the push rod elastic element 23 is connected to the plug push rod 22, and the other end is connected to the valve body 1. The push rod elastic element 23 is always in a stretched state so that the push rod elastic element 23 can apply a force away from the plug valve core 21 in the first direction to the plug push rod 22.

[0065] In some embodiments, such as Figures 4 to 6 As shown, a positioning element 27 protrudes from the outer peripheral wall of the plug rod 22, a slot 213 is provided on the plug valve core 21, and a stop surface 112 is provided on the inner wall of the valve body 1. The plug rod 22 can move axially, so that the positioning element 27 can be selectively inserted into the slot 213 to restrict the rotation of the plug rod 22 relative to the plug valve core 21, or the positioning element 27 can be separated from the plug valve core 21 and abut against the stop surface 112 in the first direction.

[0066] When the gas plug valve is in the closed state, the plug rod 22 abuts against the stop surface 112 in the first direction under the action of the plug elastic element 23 to prevent the plug rod 22 from disengaging from the valve body 1.

[0067] When the gas stopcock valve needs to be opened, press the stopcock rod 22 in the opposite direction of the first direction. The positioning member 27 is inserted into the slot 213 and abuts against the bottom wall of the slot 213. If the stopcock rod 22 is pressed further, the valve core elastic member 24 will increase the pressing resistance of the user to remind the user that the stopcock rod 22 is pressed in place. Then rotate the stopcock rod 22 to open the gas outlet 111 and complete the opening of the gas stopcock valve.

[0068] In some embodiments, such as Figures 2 to 5As shown, the valve body 1 includes a first valve body 11 with a gas outlet 111 and a second valve body 12 with a gas inlet 121. The first valve body 11 and the second valve body 12 are sealed together. An assembly opening 113 is formed at one end of the first valve body 11 connected to the second valve body 12. A stopcock valve core 21 is inserted into the first valve body 11 along a first direction through the assembly opening 113. A second limiting surface 123 is located on the inner wall of the second valve body 12, and an inner conical surface 114 is located on the inner wall of the first valve body 11. Exemplarily, the first valve body 11 and the second valve body 12 are threaded together. This configuration allows the valve core elastic element 24 to be confined between the limiting boss 211 and the second limiting surface 123 and in a compressed state after the first valve body 11 and the second valve body 12 are threaded together, ensuring that the outer conical surface 214 and the inner conical surface 114 maintain abutting contact under the action of the valve core elastic element 24.

[0069] In some embodiments, such as Figures 4 to 7 As shown, the plug valve core 21 has a through hole 210 extending along a first direction, and a limiting boss 211 protrudes from the inner wall of the through hole 210; one end of the push rod elastic member 23 is placed in the through hole 210 on one side of the limiting boss 211, and the valve core elastic member 24 is placed in the through hole 210 on the other side of the limiting boss 211. Specifically, the through hole 210 includes a first hole 2101 located on one side of the limiting boss 211 and a guide hole 2102 located on the other side of the limiting boss 211, one end of the push rod elastic member 23 is placed in the first hole 2101, and the valve core elastic member 24 is placed in the guide hole 2102.

[0070] This configuration allows the valve core elastic element 24 and the push rod elastic element 23 to be positioned on opposite sides of the limiting boss 211 along the first direction, ensuring that the valve core elastic element 24 does not affect the pressing feel when pressing the push rod 22. Placing one end of the push rod elastic element 23 in the first hole 2101 guides the extension and retraction of the push rod elastic element 23; placing the valve core elastic element 24 in the through hole 2102 guides the extension and retraction of the valve core elastic element 24.

[0071] In some embodiments, such as Figures 4 to 7 As shown, the limiting boss 211 is an annular structure extending circumferentially along the valve core 21. The inner cavity of the annular structure forms a through hole 2111 for the valve stem 22 to pass through. A first sealing element 25 is provided between the inner peripheral wall of the through hole 2111 and the outer peripheral wall of the valve stem 22. By providing the first sealing element 25, leakage of gas in the gas passage 10 through the gap between the inner peripheral wall of the through hole 210 and the outer peripheral wall of the valve stem 22 can be prevented. Exemplarily, the first sealing element 25 is a sealing ring.

[0072] Specifically, the inner peripheral wall of the through hole 2111 is provided with an annular groove 2112, one end of the annular groove 2112 passes through the limiting boss 211 along the axial direction of the plug valve core 21; the first sealing member 25 is sandwiched between the bottom wall of the annular groove 2112 and the outer peripheral wall of the plug rod 22 along the radial direction of the plug valve core 21; the gas plug valve also includes a baffle 26, one side of the baffle 26 abuts against the first sealing member 25, and the other side abuts against the valve core elastic member 24.

[0073] For example, one end of the annular groove 2112 extends to the side of the limiting boss 211 facing the valve core elastic member 24, clamping the push rod elastic member 23 between the second limiting surface 123 and the baffle 26, and using the push rod elastic member 23 to press the baffle 26 against the limiting boss 211, so that the push rod elastic member 23 is limited within the annular groove 2112, which helps to simplify the installation method of the first seal 25 and improve the installation efficiency.

[0074] As an alternative, one end of the annular groove 2112 can be extended to the side of the limiting boss 211 facing the push rod elastic member 23. In this case, one side of the baffle 26 presses against the first seal member 25, and the other side presses against the push rod elastic member 23.

[0075] In some embodiments, such as Figures 2 to 7 As shown, the plug valve core 21 is provided with an outlet 212, which is connected to the through hole 2102. The rotation of the plug valve core 21 relative to the valve body 1 can selectively connect or disconnect the outlet 212 with the gas outlet 111. Specifically, the outlet 212 is located between the large diameter end and the small diameter end.

[0076] Pressurized gas enters the gas passage 10 and the through hole 2102 through the gas inlet 121. When the gas stopcock valve is closed, the gas in both the gas passage 10 and the through hole 2102 exerts a force along the first direction on the stopcock valve core 21. This, combined with the force exerted on the stopcock valve core 21 by the valve core elastic element 24, ensures a relatively tight contact between the outer conical surface 214 of the stopcock valve core 21 and the inner conical surface 114 of the inner wall of the gas passage 10. To open or close the gas stopcock valve, simply rotate the stopcock valve core 21 to connect or disconnect the gas outlet 212 from the gas outlet 111.

[0077] In some embodiments, such as Figure 2 and Figure 3 ,as well as Figure 8 and Figure 9As shown, the gas rotary valve also includes a solenoid valve assembly 3. The solenoid valve assembly 3 includes a solenoid valve core 31, an electromagnetic elastic element 33 sleeved on the solenoid valve core 31, and a sealing plug 32 installed on the solenoid valve core 31. The electromagnetic elastic element 33 is used to apply a force to the solenoid valve core 31 in a first direction. The rotary valve push rod 22 can push the solenoid valve core 31 to move in the opposite direction of the first direction, so that the solenoid valve core 31 moves back and forth between the open position and the cut-off position. When the solenoid valve core 31 is in the open position, the sealing plug 32 opens the gas inlet 121 and the gas outlet 212; when the solenoid valve core 31 is in the cut-off position, the sealing plug 32 cuts off the gas inlet 121 and the gas outlet 212.

[0078] For example, the electromagnetic elastic element 33 is a compression spring, with one end of the electromagnetic elastic element 33 abutting against the sealing plug 32 and the other end abutting against the outer wall of the housing of the solenoid valve assembly 3.

[0079] During the reverse movement of the stopcock rod 22 in the first direction, the stopcock rod 22 continuously approaches the solenoid valve core 31. After the stopcock rod 22 contacts the solenoid valve core 31, it will push the solenoid valve core 31 to move. When the positioning member 27 is inserted into the slot 213 and abuts against the bottom wall of the slot 213, the sealing plug 32 connects the gas inlet 121 and the gas outlet 212, so that the gas entering the gas passage 10 from the gas inlet 121 flows to the gas outlet 212. During this process, the electromagnetic elastic member 33 accumulates elastic potential energy for reset.

[0080] If the stopcock rod 22 is not rotated afterward, and the pressing force applied to the stopcock rod 22 is removed, the stopcock rod 22 will move in the first direction to reset under the action of the rod elastic element 23. The solenoid valve assembly 3 will not be energized. Under the action of the electromagnetic elastic element 33, the solenoid valve core 31 will drive the sealing plug 32 to reset, so that the sealing plug 32 will cut off the gas inlet 121 and the gas outlet 212.

[0081] Afterwards, rotating the stopcock valve core 21 connects the gas outlet 212 and the gas outlet 111, allowing the gas in the gas passage 10 to flow out through the gas outlet 212 and the gas outlet 111 for normal combustion. The solenoid valve assembly 3 is energized, and after the user removes the pressing force applied to the stopcock rod 22, the solenoid valve core 31 remains in its current position to allow for normal gas flow. Reversing the rotation of the stopcock valve core 21 cuts off the gas outlet 212 and the gas outlet 111, preventing gas from flowing out of the gas outlet 111, extinguishing the flame, and de-energizing the solenoid valve assembly 3. Under the action of the electromagnetic elastic element 33, the solenoid valve core 31 drives the sealing plug 32 to reset, causing the sealing plug 32 to cut off the gas inlet 121 and the gas outlet 212.

[0082] In some embodiments, such as Figure 8 and Figure 9As shown, the valve body 1 also includes a valve cap 13, the second valve body 12 is located between the first valve body 11 and the valve cap 13, the valve cap 13 and the second valve body 12 are threaded together, and one end of the solenoid valve assembly 3 is clamped between the second valve body 12 and the valve cap 13 so as to be installed in the space enclosed by the second valve body 12 and the valve cap 13.

[0083] Specifically, the outer wall of the valve body of the solenoid valve assembly 3 is provided with a mounting protrusion 34, and the inner wall of the valve cap 13 is formed with a mounting limiting surface. The mounting protrusion 34 is sandwiched between the second valve body 12 and the mounting limiting surface.

[0084] like Figures 2 to 9 As shown, the assembly process of the above-mentioned gas rotary valve is as follows:

[0085] The first valve body 11 is fixed, and the plug rod 22 extends from the assembly opening 113 into the first valve body 11, with the second end of the plug rod 22 protruding from the first valve body 11 until the positioning member 27 presses against the stop surface 112, so that the stop surface 112 supports the plug rod 22. Then, the plug rod elastic member 23 is inserted into the first valve body 11 through the assembly opening 113 and sleeved on the outside of the plug rod 22. Then, the plug valve core 21 is inserted into the first valve body 11 through the assembly opening 113, so that the groove 213 and the positioning member 27 are aligned in the first direction. Then, the first sealing member 25 is sleeved on the outside of the plug rod 22 and inserted into the annular groove 2112. Finally, the retaining ring is sleeved on. Outside the stopcock rod 22, the valve core elastic element 24 is installed into the first valve body 11 through the assembly opening 113. Then, the second valve body 12 and the first valve body 11 are threaded together, which will cause the valve core elastic element 24 to be sandwiched between the limiting boss 211 and the second limiting surface 123. The valve core elastic element 24 presses the baffle 26 against the limiting boss 211, so that the first sealing element 25 is limited in the annular groove 2112. Finally, the solenoid valve assembly 3 is installed into the second valve body 12 from the end of the second valve body 12 away from the first valve body 11, and the valve cap 13 is threaded to the second valve body 12, so that the solenoid valve assembly 3 is sandwiched between the second valve body 12 and the valve cap 13.

[0086] The assembly process of the gas plug valve is simple, and the disassembly and assembly efficiency of the gas plug valve is relatively high.

[0087] In some embodiments, a second sealing element is provided between the outer conical surface 214 and the inner conical surface 114, and the second sealing element is located axially along the outer conical surface 214 between the gas outlet 111 and the large-diameter end. Since sealing with the outer conical surface 214 and the inner conical surface 114 requires high surface finish, if the surface finish cannot meet the requirements, the second sealing element can be abrasive powder, which is filled between the outer conical surface 214 and the inner conical surface 114; the second sealing element can also be a sealing ring. This configuration prevents gas leakage from entering the gas outlet 111 through the gap between the outer conical surface 214 and the inner conical surface 114 when the gas valve is closed.

[0088] In some embodiments, such as Figure 7 As shown, a third sealing element is provided between the outer conical surface 214 and the inner conical surface 114. The third sealing element is located axially along the outer conical surface 214 between the gas outlet 111 and the small-diameter end. The third sealing element can be made of grinding powder or a sealing ring. By providing the third sealing element, when the gas plug valve is opened, it is possible to prevent the gas in the gas passage 10 from leaking through the gap between the outer conical surface 214 and the inner conical surface 114 into the space where the push rod elastic element 23 is located and then leaking to the outside.

[0089] In some embodiments, such as Figure 4 and Figure 10 As shown, at least two gas outlets 212 are provided, and all gas outlets 212 are arranged sequentially at intervals along the circumference of the valve core 21, with the opening area increasing or decreasing sequentially. This arrangement allows for adjustment of the gas flow rate by rotating the valve core 21, thereby meeting combustion requirements, by regulating the communication area between the gas outlets 212 and the gas outlet 111.

[0090] As an alternative, the outlet 212 is also an arc-shaped hole extending circumferentially along the valve core 21. The arc-shaped hole has two communicating sidewalls arranged axially opposite each other along the outer conical surface 214. Along the extension direction of the arc-shaped hole, the distance between the two communicating sidewalls along the outer conical surface 214 tends to increase or decrease. This also allows for the adjustment of the gas flow rate by rotating the valve core 21 through the valve push rod 22 to meet combustion requirements.

[0091] In some embodiments, such as Figure 3 As shown, the valve body 1 is provided with a pressure detection port 122, which is used to install a pressure detection unit, such as a pressure sensor. The pressure sensor is used to detect the pressure in the gas passage 10. Exemplarily, the pressure detection port 122 is located between the second limiting surface 123 and the sealing plug 32 along the first direction.

[0092] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0093] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gas plug valve, comprising a plug valve assembly (2) and a valve body (1), wherein the valve body (1) is provided with a gas passage (10), and the valve body (1) is provided with a gas inlet (121) and a gas outlet (111), wherein the gas inlet (121) is connected to the inlet of the gas passage (10), and the gas outlet (111) is connected to the outlet of the gas passage (10); characterized in that, The plug valve assembly (2) includes: A stopcock valve core (21) is disposed in the gas passage (10). The outer peripheral wall of the stopcock valve core (21) is provided with an outer conical surface (214), and the inner wall of the gas passage (10) is provided with an inner conical surface (114). Along the airflow direction in the gas passage (10), the diameter of the outer conical surface (214) and the diameter of the inner conical surface (114) gradually decrease. The central axis of the stopcock valve core (21) extends along the axial direction of the outer conical surface (214). The stopcock valve core (21) can rotate relative to the valve body (1) around its own central axis to selectively open or close the gas outlet (111). The valve core elastic element (24) is used to apply a force to the plug valve core (21) along the airflow direction in the gas passage (10) so that the outer conical surface (214) and the inner conical surface (114) maintain abutting fit.

2. The gas rotary valve according to claim 1, characterized in that, The plug valve assembly (2) also includes: The plug rod (22) has a first end and a second end disposed opposite to each other in a first direction, the second end being exposed outside the valve body (1), and the first end sealingly penetrating the plug valve core (21); the plug rod (22) is axially movable relative to the plug valve core (21) and can be restricted to rotate relative to the plug valve core (21); The push rod elastic element (23) is used to apply a force along the first direction to the plug push rod (22), the first direction being the direction from the large diameter end of the outer conical surface (214) to the small diameter end of the outer conical surface (214).

3. The gas rotary valve according to claim 2, characterized in that, Both the push rod elastic element (23) and the valve core elastic element (24) are compression springs extending along the first direction; The plug rod (22) has a first limiting surface (221), the inner wall of the gas passage (10) has a second limiting surface (123), and the plug valve core (21) is located between the first limiting surface (221) and the second limiting surface (123) along the first direction; The push rod elastic element (23) is confined between the first limiting surface (221) and the plug valve core (21) along the first direction, and the valve core elastic element (24) is confined between the second limiting surface (123) and the plug valve core (21) along the first direction.

4. The gas rotary valve according to claim 3, characterized in that, The plug valve core (21) has a through hole (210) extending along the first direction, and a limiting boss (211) protrudes from the inner wall of the through hole (210). One end of the top rod elastic element (23) is placed in the through hole (210) on one side of the limiting boss (211), and the valve core elastic element (24) is placed in the through hole (210) on the other side of the limiting boss (211).

5. The gas rotary valve according to claim 4, characterized in that, The limiting boss (211) is an annular structure extending circumferentially along the plug valve core (21). The inner cavity of the annular structure forms a through hole (2111) for the plug rod (22) to pass through. A first sealing element (25) is provided between the inner peripheral wall of the through hole (2111) and the outer peripheral wall of the plug rod (22).

6. The gas rotary valve according to claim 5, characterized in that, The inner peripheral wall of the through hole (2111) is provided with an annular groove (2112), and one end of the annular groove (2112) passes through the limiting boss (211) along the axial direction of the plug valve core (21). The first sealing element (25) is sandwiched radially between the bottom wall of the annular groove (2112) and the outer peripheral wall of the plug rod (22); The gas rotary valve also includes a baffle (26), one side of which presses against the first seal (25), and the other side presses against the push rod elastic member (23) or the valve core elastic member (24).

7. The gas rotary valve according to any one of claims 3 to 6, characterized in that, The valve body (1) includes a first valve body (11) having the gas outlet (111) and a second valve body (12) having the gas inlet (121), the first valve body (11) and the second valve body (12) being sealed together; The second limiting surface (123) is provided on the inner wall of the second valve body (12), the inner conical surface (114) is provided on the inner wall of the first valve body (11), and an assembly opening (113) is formed at one end of the first valve body (11) that connects to the second valve body (12). The plug valve core (21) is installed into the first valve body (11) along the first direction through the assembly opening (113).

8. The gas rotary valve according to any one of claims 1 to 6, characterized in that, A second sealing element is provided between the two outer conical surfaces (214) and the inner conical surface (114), the second sealing element being located along the axial direction of the outer conical surface (214) between the gas outlet (111) and the large diameter end of the outer conical surface (214); and / or, a third sealing element is provided between the two outer conical surfaces (214) and the inner conical surface (114), the third sealing element being located along the axial direction of the outer conical surface (214) between the gas outlet (111) and the small diameter end of the outer conical surface (214).

9. The gas rotary valve according to claim 5 or 6, characterized in that, The through hole (210) includes a through hole (2102) located on the side of the limiting boss (211) near the top rod elastic element (23). The valve core (21) is provided with an outlet (212) communicating with the through hole (2102). The valve core (21) can rotate relative to the valve body (1) to allow the outlet (212) to selectively communicate with or disconnect from the gas outlet (111). The air outlet (212) is provided with at least two, and all the air outlets (212) are arranged sequentially at intervals along the circumference of the plug valve core (21) and the opening area increases or decreases sequentially. Alternatively, the air outlet (212) is an arc-shaped hole extending circumferentially along the plug valve core (21). The arc-shaped hole has two communicating sidewalls arranged opposite each other along the axial direction of the outer conical surface (214). Along the extension direction of the arc-shaped hole, the distance between the two communicating sidewalls along the axial direction of the outer conical surface (214) tends to increase or decrease.

10. A gas-fired appliance, characterized in that, Including the gas rotary valve as described in any one of claims 1 to 9.

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