Improved gas regulating valve

Abstract

An improved gas regulating valve, comprising: a valve body, a valve cover, a valve rod main body, a valve core main body, a top rod main body and a solenoid valve assembly; the valve body is further provided with a top rod cavity for the top rod main body to extend and retract; the top rod cavity is connected between the solenoid valve cavity and the valve rod cavity; a top rod return spring is arranged in the top rod cavity; a valve rod positioning cap is arranged at the top end of the top rod main body; a valve rod return spring is sleeved on the outer periphery of the valve rod main body; the top end of the valve rod return spring is embedded in the inner side of the valve rod positioning cap; an outer convex part is arranged on the outer side of the valve rod positioning cap; and the top end of the top rod main body abuts against the outer convex part. According to the utility model, the force of the top rod is transmitted to the valve rod main body through the outer convex part, the movement track of the valve rod return spring is completely avoided, and the risk of spring deformation or jamming is completely eliminated. The top rod moves more smoothly, and the overall mechanical life of the valve body is significantly prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of combustion stove accessories, and in particular to an improved gas regulating valve. Background Technology

[0002] Gas stoves commonly employ gas regulating valves with flameout protection. Their core structure includes a solenoid valve linked to a thermocouple and a valve body that controls the gas flow. A typical design (as shown in patent CN218818297U) achieves ignition control through the linkage of a valve stem and a push rod: when the user presses the valve stem, the push rod is driven to open the solenoid valve, thus opening the gas path. While this structure provides basic safety protection, it still has the following significant drawbacks in practical applications: 1. The push rod structure is complex and costly. Existing push rods rely on threaded guide sleeves for axial sealing and limit, and use multiple layers of seals (such as O-rings) to ensure airtightness. This design results in a large number of parts and cumbersome assembly processes, which not only increases manufacturing costs but also reduces production efficiency and product reliability.

[0003] 2. Risk of interference between the push rod and the return spring: The top of the push rod usually abuts against the positioning plate above the valve stem, and its position is close to the central axis of the valve stem. This layout can easily cause spatial interference between the movement trajectory of the push rod and the valve stem return spring. Long-term use may cause the spring to deform or become stuck, thereby affecting the flexibility of the push rod's movement and shortening the service life of the valve body.

[0004] 3. The intake pipe connection method is inefficient. The intake end of the solenoid valve uses a flange connection to connect to the intake pipe, which requires additional flange structure to be machined at the intake pipe end and fastened with bolts. This connection method not only increases the number of accessories such as flanges, gaskets and fasteners, but also raises material and assembly costs. At the same time, it makes the overall valve body structure bulky, which is not conducive to compact design.

[0005] The aforementioned problems have hindered cost control and performance optimization of gas regulating valves, necessitating a new solution that simplifies the push rod transmission mechanism, optimizes the motion layout, and streamlines the air intake interface. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an improved gas regulating valve.

[0007] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an improved gas regulating valve, including: valve body, valve cover, valve stem body, valve core body, push rod body and solenoid valve assembly; The valve body includes an inlet end, a solenoid valve cavity, an inlet channel, a valve core cavity, and an outlet end that are interconnected; the inlet channel is connected between the solenoid valve cavity and the valve core cavity; the solenoid valve assembly is installed in the solenoid valve cavity, and the valve plug of the solenoid valve assembly can block the inlet channel; the valve core body is installed in the valve core cavity; one end of the valve core cavity is provided with a valve stem cavity, and the valve cover is used to cover the valve stem cavity; The valve body is also provided with a push rod cavity for the extension and retraction of the push rod body; the push rod cavity is connected between the solenoid valve cavity and the valve stem cavity; a push rod return spring is provided in the push rod cavity; The top of the push rod body is provided with a valve stem positioning cap; a valve stem return spring is sleeved on the outer periphery of the valve stem body; the top of the valve stem return spring is recessed into the inner side of the valve stem positioning cap; an outward protrusion is provided on the outer side of the valve stem positioning cap; the top of the push rod body abuts against the outward protrusion.

[0008] Optionally, the valve stem positioning cap has a bowl-shaped structure, including a positioning base plate and a positioning ring wall; the top end of the push rod return spring is located inside the positioning ring wall; the outward protrusion is located outside the positioning ring wall.

[0009] Optionally, the push rod cavity is provided with a push rod connecting hole; the push rod connecting hole connects the solenoid valve cavity and the push rod cavity, and the push rod body passes through the push rod connecting hole; a push rod sealing ring is provided on the side of the push rod connecting hole facing the push rod cavity.

[0010] Optionally, a pressure ring is press-fitted into the push rod cavity; the pressure ring is used to press the push rod sealing ring onto the bottom end of the push rod cavity.

[0011] Optionally, the push rod is provided with a push rod ring platform; the push rod return spring is sleeved on the outer periphery of the push rod and abuts against the pressure ring and the push rod ring platform.

[0012] Optionally, the air intake end is provided with an air intake interface, and the air intake interface is provided with an external thread structure for threaded connection of the air intake pipe.

[0013] The beneficial effects of this invention are as follows: It eliminates the traditional threaded guide sleeve and multi-layer sealing design, adopting an integrated push rod body and valve stem positioning cap structure. The push rod return spring is directly built into the push rod cavity, eliminating the need for additional guide components and significantly reducing the number of parts. A valve stem positioning cap with an outward protrusion is provided at the top of the push rod body, and the top of the valve stem return spring is recessed into the inner side of the positioning cap, forming a spatially separated layout. This design allows the push rod force to be transmitted to the valve stem body through the outward protrusion, completely avoiding the movement trajectory of the valve stem return spring and completely eliminating the risk of spring deformation or jamming. The push rod movement is smoother, and the overall mechanical life of the valve body is significantly extended.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] 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: Figure 1 This is a schematic diagram of the structure of the improved gas regulating valve of this utility model.

[0016] Explanation of key component symbols: 10. Valve body; 11. Inlet end; 111. Inlet port; 12. Solenoid valve chamber; 13. Inlet passage; 14. Valve core chamber; 15. Outlet end; 16. Valve stem chamber; 17. Push rod chamber; 18. Push rod connecting hole; 20. Valve cover; 30. Valve stem body; 31. Valve stem positioning cap; 311. Positioning base plate; 312. Positioning ring wall; 32. Valve stem return spring; 33. Outer protrusion; 40. Valve core body; 50. Push rod body; 51. Push rod return spring; 52. Push rod sealing ring; 53. Pressure ring; 54. Push rod ring platform; 60. Solenoid valve assembly. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0019] 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.

[0020] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. 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.

[0021] Example Reference Figure 1 The present invention proposes an improved gas regulating valve, comprising: valve body 10, valve cover 20, valve stem body 30, valve core body 40, push rod body 50, and solenoid valve assembly 60; The valve body 10 includes an inlet end 11, a solenoid valve chamber 12, an inlet passage 13, a valve core chamber 14, and an outlet end 15 that are interconnected. The inlet passage 13 is connected between the solenoid valve chamber 12 and the valve core chamber 14. The solenoid valve assembly 60 is installed in the solenoid valve chamber 12, and the valve plug of the solenoid valve assembly 60 can block the inlet passage 13. The valve core body 40 is installed in the valve core chamber 14. One end of the valve core chamber 14 is provided with a valve stem chamber 16, and the valve cover 20 is used to cover the valve stem chamber 16. The valve body 10 is also provided with a push rod cavity 17 for the push rod body 50 to extend and retract; the push rod cavity 17 is connected between the solenoid valve cavity 12 and the valve stem cavity 16; a push rod return spring 51 is provided in the push rod cavity 17. A valve stem positioning cap 31 is provided at the top of the push rod body 50; a valve stem return spring 32 is sleeved on the outer periphery of the valve stem body 30; the top of the valve stem return spring 32 is recessed into the inner side of the valve stem positioning cap 31; an outer protrusion 33 is provided on the outer side of the valve stem positioning cap 31; the top of the push rod body 50 abuts against the outer protrusion 33.

[0022] In this invention, the traditional threaded guide sleeve and multi-layer sealing design are eliminated, and an integrated push rod body 50 and valve stem positioning cap 31 structure is adopted. The push rod return spring 51 is directly built into the push rod cavity 17, eliminating the need for additional guide components and significantly reducing the number of parts. The top of the push rod body 50 is provided with a valve stem positioning cap 31 with an outward protrusion 33, and the top of the valve stem return spring 32 is recessed into the inner side of the positioning cap, forming a spatially separated layout. This design allows the push rod force to be transmitted to the valve stem body 30 through the outward protrusion 33, completely avoiding the movement trajectory of the valve stem return spring 32 and completely eliminating the risk of spring deformation or jamming. The push rod movement is smoother, and the overall mechanical life of the valve body 10 is significantly extended.

[0023] In this embodiment, the valve stem positioning cap 31 has a bowl-shaped structure, including a positioning base plate 311 and a positioning ring wall 312; the top of the push rod return spring 51 is located inside the positioning ring wall 312; the outward protrusion 33 is located outside the positioning ring wall 312. The dual-functional area isolation design: on the inner side, the positioning ring wall 312 wraps around the push rod return spring 51 to prevent the spring from wobbling or falling off; on the outer side, the outward protrusion 33 is dedicated to force transmission, avoiding contact with the spring. This further eliminates motion interference, and the bowl-shaped structure improves positioning accuracy, ensuring linear movement of the push rod. In this embodiment, the push rod cavity 17 is provided with a push rod connecting hole 18; the push rod connecting hole 18 connects the solenoid valve cavity 12 and the push rod cavity 17, and the push rod body 50 passes through the push rod connecting hole 18; a push rod sealing ring 52 is provided on the side of the push rod connecting hole 18 facing the push rod cavity 17. The push rod connecting hole 18 is provided with a single-layer push rod sealing ring 52, replacing multiple O-rings, simplifying the push rod sealing structure, replacing the traditional multi-layer seal; ensuring sealing performance and sealing component cost. Specifically, a pressure ring 53 is press-fitted into the push rod cavity 17; the pressure ring 53 is used to press the push rod sealing ring 52 onto the bottom end of the push rod cavity 17. The pressure ring 53 press-fits the push rod sealing ring 52 with an interference fit. This eliminates the need for threaded fasteners, improving assembly efficiency, eliminating the need for tightening operations, and resulting in a more compact structure.

[0024] Furthermore, the push rod is provided with a push rod ring platform 54; the push rod return spring 51 is sleeved on the outer periphery of the push rod and abuts against the pressure ring 53 and the push rod ring platform 54. The push rod return spring 51 is limited to the position between the pressure ring 53 and the push rod ring platform 54; the spring pre-compression force is stable, ensuring that the push rod returns to its original position quickly and improving the response speed.

[0025] In this embodiment, the air inlet end 11 is provided with an air inlet interface 111, which has an external thread structure for threaded connection of the air inlet pipe. The external thread interface on the air inlet end 11 replaces the flange connection, allowing direct threaded connection of the air inlet pipe, eliminating the need for flanges, gaskets, bolts, and other accessories. This simplifies the assembly process; a seal is achieved simply by screwing it in, saving axial space and facilitating the miniaturization of the valve body 10.

[0026] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. An improved gas regulating valve, characterized in that, include: Valve body (10), valve cover (20), valve stem body (30), valve core body (40), push rod body (50) and solenoid valve assembly (60); The valve body (10) includes an inlet end (11), a solenoid valve chamber (12), an inlet channel (13), a valve core chamber (14), and an outlet end (15) that are interconnected. The inlet channel (13) is connected between the solenoid valve chamber (12) and the valve core chamber (14). The solenoid valve assembly (60) is installed in the solenoid valve chamber (12), and the valve plug of the solenoid valve assembly (60) can block the inlet channel (13). The valve core body (40) is installed in the valve core chamber (14). One end of the valve core chamber (14) is provided with a valve stem chamber (16), and the valve cover (20) is used to cover the valve stem chamber (16). The valve body (10) is also provided with a push rod cavity (17) for the push rod body (50) to extend and retract; the push rod cavity (17) is connected between the solenoid valve cavity (12) and the valve stem cavity (16); a push rod return spring (51) is provided in the push rod cavity (17); The top of the push rod body (50) is provided with a valve stem positioning cap (31); a valve stem return spring (32) is sleeved on the outer periphery of the valve stem body (30); the top of the valve stem return spring (32) is recessed into the inner side of the valve stem positioning cap (31); an outer protrusion (33) is provided on the outer side of the valve stem positioning cap (31); the top of the push rod body (50) abuts against the outer protrusion (33).

2. The improved gas regulating valve according to claim 1, characterized in that: The valve stem positioning cap (31) has a bowl-shaped structure, including a positioning base plate (311) and a positioning ring wall (312); the top end of the push rod return spring (51) is located inside the positioning ring wall (312); the outer protrusion (33) is located outside the positioning ring wall (312).

3. The improved gas regulating valve according to claim 1, characterized in that: The push rod cavity (17) is provided with a push rod connection hole (18); the push rod connection hole (18) connects the solenoid valve cavity (12) and the push rod cavity (17), and the push rod body (50) passes through the push rod connection hole (18); a push rod sealing ring (52) is provided on the side of the push rod connection hole (18) facing the push rod cavity (17).

4. The improved gas regulating valve according to claim 3, characterized in that: The push rod cavity (17) is press-fitted with a pressure ring (53); the pressure ring (53) is used to press the push rod sealing ring (52) onto the bottom end of the push rod cavity (17).

5. The improved gas regulating valve according to claim 4, characterized in that: The top rod is provided with a top rod ring platform (54); the top rod return spring (51) is sleeved on the outer periphery of the top rod and abuts against the pressure ring (53) and the top rod ring platform (54).

6. The improved gas regulating valve according to claim 1, characterized in that: The air intake end (11) is provided with an air intake interface (111), and the air intake interface (111) is provided with an external thread structure for threaded connection of the air intake pipe.

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