Improved gas cock valve

Abstract

An improved gas plug valve, the main shaft comprises a knob joint segment, a movable segment, a main shaft limiting ring table and a rotating clamping segment from top to bottom; the knob joint segment is provided with a limiting flat surface on one side; the movable segment is an integral circular rod structure and is arranged in the valve seat cover; the rotating clamping segment is matched with the rotating clamping wall on the upper part of the valve core body; the main shaft limiting ring table is sleeved with a pulse gland; the pulse gland is in a cap cover structure, and a conductive upper spring is arranged between the upper part of the pulse gland and the valve seat cover; the side wall of the pulse gland is located outside the rotating clamping wall, can pass through the rotating clamping wall and abuts against the pulse trigger piece. The utility model realizes the design of the vertical height thin type of the whole structure of the valve seat body; reduces the production cost of the main shaft, improves the sealing performance of the shaft rod, reduces the risk of water seepage and air leakage; ensures the stability and low resistance of the ground wire conduction, avoids resistance floating and spark generation, improves the safety and service life.

Description

Technical Field

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

[0002] A gas rotary valve is a control valve that uses a lever to rotate a valve core, thereby adjusting the gas passage and its opening. Please refer to [link / reference]. Figure 1 The existing technology typically includes a valve seat body 10 with an inverted conical valve core cavity and a gas passage, an inverted conical valve core body 20 with a through-center, a solenoid valve body 11, a linkage lever 12 located below the valve core body 20, a solenoid valve trigger lever 13 passing through the valve core body 20, and a main rotating shaft 30 located above the valve core body 20. The main rotating shaft 30 passes through the valve seat cover 14 and can drive the valve core body 20 to rotate, or press against the valve core body 20 to drive the solenoid valve trigger lever 13 and the linkage lever 12 to perform ignition operation. In order to match the downward ignition action of the main rotating shaft 30, a pulse trigger plate 15 is usually provided above the valve core cavity, and an annular pulse pressure plate 40 is engaged with the main rotating shaft 30. The pulse pressure plate 40 moves down to touch the pulse trigger plate 15 to realize the pulse ignition operation.

[0003] The applicant found that the existing gas rotary valve still has the following shortcomings: 1. The top of the valve core body 20 is provided with a rotating retaining wall 21 that cooperates with the rotating retaining block 31 at the bottom of the main rotating shaft 30. The pulse pressure plate 40 cannot move through the rotating retaining wall 21 of the valve core, so the pulse trigger plate 15 is usually arranged above the valve core body 20. This makes it necessary for the valve seat body 10 to provide a certain height area above the valve core cavity so that the pulse trigger plate 15 and the rotating retaining wall 21 are misaligned, making it difficult to further reduce the height of the valve seat body 10.

[0004] 2. In order to hold the pulse pressure plate 40 and limit its axial movement up and down, the main rotating shaft 30 has multiple annular grooves with embedded annular limiting plates, and the upper part is mostly a non-circular shaft structure. This not only requires multiple processing steps, making it difficult to effectively reduce production costs, but also makes it easy for water and air to seep in and leak during the up and down movement and rotation of the shaft, resulting in poor airtightness.

[0005] 3. During the downward pressing process of the main rotating shaft 30, the upper part of the pulse pressure plate 40 makes contact with the shaft hole of the valve seat cover 14 through the main rotating shaft 30 to achieve conductive contact of the ground wire; however, the contact between the main rotating shaft 30 and the shaft hole of the valve seat cover 14 is unstable, the resistance fluctuates greatly, and sparks are easily generated.

[0006] 4. The valve core body 20 is held in place by only one lower spring at the contact point with the main rotating shaft 30. When the pressure regulation fails or the spring ages and fails, or the pressure is too high, the valve core body 20 may be pushed open by the gas.

[0007] 5. The micro-flame hole 23 of the valve core body 20 is relatively small, and its outer periphery is provided with an annular oil sink for storing lubricating oil. In order to ensure airtightness and the processing of the oil sink of the micro-flame hole 23, the valve core body 20 needs to have a certain wall thickness. Within the limited valve core cavity space, the gas passage of the valve core body 20 is difficult to expand.

[0008] Therefore, further improvements are needed. Utility Model Content

[0009] 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 rotary valve.

[0010] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an improved gas plug valve, including a valve seat body with an inverted conical valve core cavity and a gas passage, an inverted conical valve core body with a through center, a solenoid valve body, a linkage lever located below the valve core body, a solenoid valve trigger lever passing through the valve core body, and a main rotating shaft located above the valve core body, wherein the main rotating shaft can drive the valve core body to rotate; The main rotating shaft includes, from top to bottom, a knob engagement section, a movable section, a main shaft limiting ring platform, and a rotating engagement section; a limiting flat surface is provided on one side of the knob engagement section; the movable section is an integral round rod structure that passes through the valve seat cover; the rotating engagement section cooperates with the rotating retaining wall on the upper part of the valve core body; a pulse pressure cover is sleeved on the main shaft limiting ring platform; A pulse trigger plate is provided above the valve seat body. The pulse trigger plate has a circular structure and is sleeved on the outer periphery of the valve core body, close to the valve core cavity. The pulse cover has a cap-like structure, and a conductive upper spring is provided between the upper part of the cover and the valve seat cover. The side wall of the pulse cover is located on the outer periphery of the rotating retaining wall, can pass over the rotating retaining wall, and abuts against the pulse trigger plate.

[0011] Optionally, the top end of the solenoid valve trigger rod abuts against the lower part of the rotating engagement section, and a first lower spring is provided between the solenoid valve trigger rod and the upper part of the valve core body.

[0012] Optionally, a seal is provided above the valve core body for sealing the shaft hole of the solenoid valve trigger rod.

[0013] Optionally, an outer annular platform is provided on the outer side of the upper edge of the valve core body; a second lower spring is provided on the outer sleeve of the rotating retaining wall; the second lower spring abuts against the main shaft limiting annular platform and the outer annular platform of the valve core.

[0014] Optionally, the rotating engagement section is fitted with a rotating limiting ring; the rotating limiting ring is abutted above the second lower spring; a side notch is provided on the side wall of the pulse cover, and a side limiting block passing through the side notch is provided on the outer periphery of the rotating limiting ring, so that the pulse cover can rotate synchronously with the rotating limiting ring along with the main rotating shaft.

[0015] Optionally, a downward limiting block is provided above the valve seat body; when the side limiting block rotates to above the downward limiting block, the downward limiting block is used to block the downward movement of the downward limiting block, so as to restrict the downward ignition operation of the main rotating shaft.

[0016] Optionally, the micro-flame holes of the valve core body are arranged near the upper end of the valve core body.

[0017] This utility model achieves the following beneficial effects through optimized design of the main rotating shaft structure, pulse trigger component layout, elastic support mechanism, and sealing structure: 1. Compact Structure: By arranging the pulse trigger plate on the outer periphery of the valve core body instead of on top, and cooperating with the side wall of the pulse gland, the height requirement of the valve seat body above the valve core cavity is effectively reduced, thereby realizing the longitudinal height thin design of the overall structure of the valve seat body, which is convenient for installation and use in limited space.

[0018] 2. Simplified processing and reduced costs: The main shaft adopts an integral round rod-shaped movable section design, which reduces the processing steps of non-round shaft structures and multiple annular grooves, thereby reducing production costs. At the same time, it improves the sealing performance of the shaft and reduces the risk of water leakage and air leakage.

[0019] 3. Stable and reliable electrical contact: The conductive upper spring between the pulse pressure cover and the valve seat cover replaces the direct surface contact between the main shaft and the valve seat cover shaft hole, ensuring the stability and low resistance of the ground wire conductivity, avoiding resistance fluctuation and spark generation, and improving safety and service life.

[0020] 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

[0021] 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 a gas plug valve in the prior art; Figure 2 This is a schematic diagram of the structure of the improved gas plug valve of this utility model; Figure 3 This is an exploded view of the improved gas rotary valve of this utility model; Figure 4 This is a schematic diagram of the valve core body of this utility model.

[0022] Explanation of key component symbols: 10. Valve seat body; 11. Solenoid valve body; 12. Linkage lever; 13. Solenoid valve trigger lever; 14. Valve seat cover; 15. Pulse trigger plate; 16. Seal; 17. Lower pressure limit block; 20. Valve core body; 21. Rotating retaining wall; 22. Valve core outer ring platform; 23. Micro-flame hole; 30. Main shaft; 31. Rotating retaining block; 32. Knob engagement section; 33. Moving section; 34. Main shaft limit ring platform; 35. Rotating engagement section; 40. Pulse pressure plate; 50. Pulse pressure cover; 51. Side notch; 60. Conductive upper spring; 61. First lower spring; 62. Second lower spring; 70. Rotation limit ring; 71. Side limit block. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Example Reference Figures 2 to 4 The present invention proposes an improved gas plug valve, comprising a valve seat body 10 having an inverted conical valve core cavity and a gas passage, an inverted conical valve core body 20 with a through center, a solenoid valve body 11, a linkage lever 12 located below the valve core body 20, a solenoid valve trigger lever 13 passing through the valve core body 20, and a main rotating shaft 30 located above the valve core body 20, the main rotating shaft 30 being able to drive the valve core body 20 to rotate; The main rotating shaft 30 includes, from top to bottom, a knob engagement section 32, a movable section 33, a main shaft limiting ring platform 34, and a rotation locking section 35; a limiting flat surface is provided on one side of the knob engagement section 32; the movable section 33 is an integral round rod structure that passes through the valve seat cover 14; the rotation locking section 35 cooperates with the rotation locking wall 21 on the upper part of the valve core body 20; a pulse pressure cover 50 is sleeved on the main shaft limiting ring platform 34; A pulse trigger plate 15 is provided above the valve seat body 10. The pulse trigger plate 15 has a circular structure and is sleeved on the outer periphery of the valve core body 20, close to the valve core cavity. The pulse cover 50 has a cap-like structure, and a conductive upper spring 60 is provided between the upper part of the cover and the valve seat cover 14. The side wall of the pulse cover 50 is located on the outer periphery of the rotating retaining wall 21, can pass over the rotating retaining wall 21, and abut against the pulse trigger plate 15.

[0028] This utility model achieves the following beneficial effects through optimized design of the main rotating shaft 30 structure, pulse trigger component layout, elastic support mechanism, and sealing structure: 1. Compact structure: By arranging the pulse trigger piece 15 on the outer periphery of the valve core body 20 instead of on top, and cooperating with the side wall of the pulse cover 50, the height requirement of the valve seat body 10 above the valve core cavity is effectively reduced, thereby realizing the longitudinal height thin design of the overall structure of the valve seat body 10, which is convenient for installation and use in limited space.

[0029] 2. Simplified processing and reduced costs: The main shaft 30 adopts an integral round rod-shaped movable section 33 design, which reduces the processing steps of non-round shaft structures and multiple annular grooves, reduces production costs, and improves the sealing performance of the shaft, reducing the risk of water leakage and air leakage.

[0030] 3. Stable and reliable electrical contact: The conductive upper spring 60 between the pulse pressure cover 50 and the valve seat cover 14 replaces the direct surface contact between the main rotating shaft 30 and the shaft hole of the valve seat cover 14, ensuring the stability and low resistance of the ground wire conductivity, avoiding resistance fluctuation and spark generation, and improving safety and service life.

[0031] In this embodiment, the top end of the solenoid valve trigger rod 13 abuts against the lower part of the rotating engagement section 35, and a first lower spring 61 is provided between the solenoid valve trigger rod 13 and the upper part of the valve core body 20. The top end of the solenoid valve trigger rod 13 directly abuts against the lower part of the rotating engagement section 35 of the main shaft 30, and the first lower spring 61 provides a restoring force, ensuring the precise movement of the solenoid valve trigger rod 13 when the main shaft 30 is pressed down, thereby improving the response speed and reliability of the ignition operation.

[0032] Furthermore, a sealing element 16 is provided above the valve core body 20 to seal the shaft hole of the solenoid valve trigger rod 13. The sealing element 16 above the valve core body 20 effectively prevents gas leakage from the shaft hole, improves the overall valve's sealing performance and safety, and solves the problem of poor airtightness in existing technologies. In this embodiment, an outer annular platform 22 is provided on the outer side of the upper edge of the valve core body 20; a second lower spring 62 is sleeved on the rotating retaining wall 21; the second lower spring 62 abuts between the main shaft limiting annular platform 34 and the outer annular platform 22. By providing the outer annular platform 22 on the outer side of the upper edge of the valve core body 20 and sleeved with the second lower spring 62 on the rotating retaining wall 21, the second lower spring 62 abuts between the main shaft limiting annular platform 34 and the outer annular platform 22, forming a double elastic support structure. Compared with a single spring, this significantly increases the axial clamping force on the valve core body 20. The elastic force of the second lower spring 62 continuously presses the valve core body 20 into the valve core cavity of the valve seat body 10, effectively avoiding the safety hazard of the valve core body 20 being pushed open by gas due to pressure fluctuations or spring aging, and significantly improving the reliability of the valve core seal and the safety of product use.

[0033] In this embodiment, a rotation limiting ring 70 is fitted onto the rotating engagement section 35; the rotation limiting ring 70 is abutted above the second lower spring 62; a side notch 51 is provided on the side wall of the pulse cover 50, and a side limiting block 71 passing through the side notch 51 is provided on the outer periphery of the rotation limiting ring 70, so that the pulse cover 50 and the rotation limiting ring 70 can rotate synchronously with the main rotating shaft 30. The side notch 51 on the side wall of the pulse cover 50 and the side limiting block 71 passing through the side notch 51 on the outer periphery of the rotation limiting ring 70 form a circumferential limiting fit between the pulse cover 50 and the rotation limiting ring 70, ensuring that the pulse cover 50 rotates synchronously with the main rotating shaft 30, avoiding relative slippage between the two, thereby ensuring that the side wall of the pulse cover 50 can always accurately abut against the pulse trigger piece 15, improving the stability and consistency of the ignition operation.

[0034] In this embodiment, a downward limiting block 17 is provided above the valve seat body 10. When the side limiting block 71 rotates to the position above the downward limiting block 17, the downward limiting block 17 blocks the downward movement of the downward limiting block 17, thereby restricting the downward ignition operation of the main rotating shaft 30. The cooperation between the downward limiting block 17 and the side limiting block 71 can prevent the downward operation of the main rotating shaft 30 when it rotates to a specific position (such as after 90 degrees). After 90 degrees, the downward pressure on the main rotating shaft 30 will not be fully depressed, protecting the solenoid valve from excessive force during transportation and installation. The solenoid valve is not damaged by excessive force, preventing the valve body from falling or being damaged by excessive force during installation, thus improving the safety performance of the product.

[0035] In this embodiment, the micro-flame hole 23 of the valve core body 20 is arranged near the upper end of the valve core body 20. The upper end of the inverted conical valve core body 20 has a deeper wall thickness. For valve core bodies 20 of the same size, the micro-flame hole 23 at the upper end can be made deeper, making it less prone to clogging. Furthermore, the gas passage can be made larger, the heat load can be higher, improving energy efficiency and saving materials.

[0036] 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 plug valve, comprising a valve seat body (10) having an inverted conical valve core cavity and a gas passage, an inverted conical valve core body (20) with a through center, a solenoid valve body (11), a linkage lever (12) located below the valve core body (20), a solenoid valve trigger lever (13) passing through the valve core body (20), and a main rotating shaft (30) located above the valve core body (20), wherein the main rotating shaft (30) can drive the valve core body (20) to rotate; characterized in that: The main rotating shaft (30) includes, from top to bottom, a knob engagement section (32), a movable section (33), a main shaft limiting ring platform (34), and a rotating engagement section (35); a limiting flat surface is provided on one side of the knob engagement section (32); the movable section (33) is an integral round rod structure that passes through the valve seat cover (14); the rotating engagement section (35) cooperates with the rotating retaining wall (21) on the upper part of the valve core body (20); a pulse pressure cover (50) is sleeved on the main shaft limiting ring platform (34); A pulse trigger plate (15) is provided above the valve seat body (10). The pulse trigger plate (15) has a circular structure and is sleeved on the outer periphery of the valve core body (20) and arranged close to the valve core cavity. The pulse cover (50) has a cap-like structure and a conductive upper spring (60) is provided between the upper part of the pulse cover (50) and the valve seat cover (14). The side wall of the pulse cover (50) is located on the outer periphery of the rotating retaining wall (21), can pass through the rotating retaining wall (21), and abut against the pulse trigger plate (15).

2. The improved gas rotary valve according to claim 1, characterized in that: The top end of the solenoid valve trigger rod (13) abuts against the lower part of the rotating engagement section (35), and a first lower spring (61) is provided between the solenoid valve trigger rod (13) and the upper part of the valve core body (20).

3. The improved gas rotary valve according to claim 2, characterized in that: A seal (16) for sealing the shaft hole of the solenoid valve trigger rod (13) is provided above the valve core body (20).

4. The improved gas rotary valve according to claim 2, characterized in that: The valve core body (20) has an outer ring platform (22) on the outer side of its upper edge; the rotating retaining wall (21) is fitted with a second lower spring (62); the second lower spring (62) abuts against the main shaft limiting ring platform (34) and the valve core outer ring platform (22).

5. The improved gas rotary valve according to claim 4, characterized in that: The rotating engagement section (35) is fitted with a rotating limiting ring (70); the second lower spring (62) abuts against the rotating limiting ring (70) above; the side wall of the pulse cover (50) is provided with a side notch (51), and the outer periphery of the rotating limiting ring (70) is provided with a side limiting block (71) that passes through the side notch (51), so that the pulse cover (50) can rotate synchronously with the rotating limiting ring (70) along with the main rotating shaft (30).

6. The improved gas rotary valve according to claim 5, characterized in that: A pressure limiting block (17) is provided above the valve seat body (10); when the side limiting block (71) rotates to the top of the pressure limiting block (17), the pressure limiting block (17) is used to block the downward movement of the pressure limiting block (17) to limit the downward ignition operation of the main rotating shaft (30).

7. The improved gas rotary valve according to claim 1, characterized in that: The micro-flame hole (23) of the valve core body (20) is arranged near the upper end of the valve core body (20).

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