Switch self-locking structure of gas valve

Abstract

The utility model belongs to the technical field of gas valves, and particularly relates to a switch self-locking structure of a gas valve, which comprises a valve body, a valve core and a valve rod are mounted in the valve body, one end of the valve rod is clamped with the valve core, and the other end of the valve rod is connected with a handle; a connecting rod is installed between the valve rod and the handle and used for connecting the handle and the valve rod, and a clamping part is arranged on the radial surface of the connecting rod. A radial sliding groove and an axial sliding groove which communicate with each other are formed in the inner wall, located at the connecting rod, of the valve body, and the clamping part locks the handle in the radial direction after entering the axial sliding groove along the radial sliding groove. Through the clamping part, the radial sliding groove and the axial sliding groove, after the adjusting valve rod rotates, the clamping part is clamped into the axial sliding groove, then rotation of the valve handle is locked, and mistaken touch opening is avoided, that is, when the clamping part is clamped into the axial sliding groove, the valve handle is in a closed state, that is, only locking is conducted during closing, opening is difficult, closing is easy, and warning is convenient; and meanwhile, the gas valve can be conveniently closed in an emergency, and the safety is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gas valve technical field especially relates to a gas valve's switch self -locking structure. BACKGROUND

[0002] The gas valve is used for cutting off, connecting and adjusting gas in pipeline, has good control characteristic and closing sealing performance, is suitable for city gas, liquefied petroleum gas, natural gas, oxygen and other various gas medium pipeline, and is the key equipment for ensuring gas use safety.

[0003] When the handle of the gas valve is closed, it is not locked in the traditional gas valve, which can easily lead to the situation that the gas valve is opened by mistake, and some non-professionals, especially children and the elderly, sometimes cannot distinguish the state of the handle when the gas valve is opened or closed, so they cannot effectively understand the opening and closing state of the gas valve, which has safety hazards and needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned technical problem, provides a gas valve's switch self -locking structure, achieves the effect that the gas valve can be locked when being closed, avoids the situation that being opened by mistake, and improves the safety performance.

[0005] Therefore, the utility model provides a gas valve's switch self -locking structure, which comprises:

[0006] A valve body is internally provided with a valve core and a valve rod, one end of the valve rod is connected with the valve core, and the other end is connected with a handle;

[0007] A connecting rod is installed between the valve rod and the handle, and is used for connecting the handle and the valve rod, and a clamping portion is arranged on the radial surface;

[0008] The inner wall of the valve body at the connecting rod is provided with a radial sliding groove and an axial sliding groove in communication, and the clamping portion is locked in the radial direction after entering the axial sliding groove along the radial sliding groove.

[0009] In the above technical scheme, further comprising:

[0010] An elastic member is installed in the valve body, and the two ends are respectively abutted with the valve body and the clamping portion, and is used for limiting the clamping portion in the axial sliding groove.

[0011] In the above technical scheme, further comprising:

[0012] The valve body is formed with a cylindrical portion at the valve rod, and a counterbore for installing the elastic member is arranged in the cylindrical portion.

[0013] Wherein, the radial sliding groove and the axial sliding groove are both opened on the radial inner wall of the countersunk hole.

[0014] In the above technical solution, further:

[0015] A first annular groove is provided on the inner wall of the cylindrical portion away from one end of the valve core, and a clamping spring is installed in the first annular groove and is used to limit the clamping portion in the axial sliding groove.

[0016] In the above technical solution, further:

[0017] A first slot is provided on the valve stem, and one end of the connecting rod is inserted into the first slot;

[0018] The axial dimension of the radial slot is larger than the axial dimension of the clamping portion, and the first slot allows the connecting rod to be offset in the axial direction and always inserted in the first slot.

[0019] In the above technical solution, further:

[0020] A second slot is provided in the handle, and the other end of the connecting rod is inserted into the second slot;

[0021] Wherein, the connecting rod is fixedly connected to the inner wall of the second slot.

[0022] In the above technical solution, further:

[0023] The handle extends toward one side of the valve body to form a rim portion, and the rim portion wraps both the axial sliding groove and the radial sliding groove.

[0024] In the above technical solution, further:

[0025] A second annular groove is provided on the surface of the valve stem, and a sealing ring is installed in the second annular groove.

[0026] The beneficial effects of the utility model are:

[0027] 1. Through the clamping part set on the side of the connecting rod and the radial sliding groove and axial sliding groove opened on the inner wall of the valve body, after the handle adjustment valve stem is rotated, the clamping part can be clamped into the axial sliding groove, thereby locking the rotation of the valve handle to avoid accidental opening. Specifically, when the clamping part is clamped into the axial sliding groove, the gas valve is in a closed state, that is, it is only locked when closed, that is, it is difficult to open and easy to close, which is convenient for warning and convenient for closing the gas valve in an emergency, effectively improving safety.

[0028] 2. Through the setting of the elastic part, when the handle is released after closing the gas valve, the elastic potential energy can be released, thereby pushing the clamping part into the axial sliding groove, thereby improving the convenience of closing the valve. When the gas valve needs to be opened, it is necessary to overcome the elastic potential energy of the elastic part to push the clamping part out of the axial sliding groove and then rotate it, thereby further improving safety.

[0029] 3. By making the axial dimension of the radial slot larger than the axial dimension of the clamping portion, the clamping portion can be axially offset in the radial slot, thereby avoiding jamming when the handle is rotated and improving the convenience of rotation.

[0030] 4. By extending the handle toward one side of the valve body to form a edging portion, the axial slide groove and the radial slide groove are wrapped therein, thereby effectively preventing dust and debris from invading the axial slide groove and the radial slide groove, avoiding affecting the adjustment of the handle and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the utility model;

[0032] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 It is an exploded view of the utility model;

[0034] The markings in the figure are as follows: 1. valve body; 2. valve core; 3. valve stem; 4. handle; 40. edging portion; 5. connecting rod; 6. clamping portion; 7. radial slide groove; 8. axial slide groove; 9. elastic member; 10. cylindrical portion; 11. countersunk hole; 12. first annular groove; 13. retaining spring; 14. first slot; 15. second slot; 16. second annular groove; 17. sealing ring. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0036] Example 1:

[0037] This embodiment provides a gas valve switch self-locking structure, including:

[0038] The valve body 1 has a valve core 2 and a valve stem 3 installed inside. One end of the valve stem 3 is connected to the valve core 2, and the other end is connected to the handle 4.

[0039] The connecting rod 5 is installed between the valve stem 3 and the handle 4 and is used to connect the handle 4 to the valve stem 3. The connecting rod 5 has a clamping portion 6 on its radial surface.

[0040] The valve body 1 has a radial slot 7 and an axial slot 8 on its inner wall at the connecting rod 5, and the clamping portion 6 enters the axial slot 8 along the radial slot 7 to lock the handle 4 in the radial direction.

[0041] At the same time, the connecting rod 5 and the clamping portion 6 adopt an integrated structure, and there are two radial sliding grooves 7 and two axial sliding grooves 8, which are symmetrically arranged relative to the axis.

[0042] It can be seen from this embodiment that, through the clamping portion 6 provided on the side of the connecting rod 5 and the radial sliding groove 7 and axial sliding groove 8 provided on the inner wall of the valve body 1, the clamping portion 6 can be clamped into the axial sliding groove 8 after the handle 4 adjusts the valve stem 3 and rotates, thereby locking the rotation of the valve handle to prevent accidental opening. Specifically, when the clamping portion 6 is clamped into the axial sliding groove 8, the gas valve is in a closed state, that is, it is locked only when closed, i.e., it is difficult to open and easy to close, which is convenient for warning and convenient for closing the gas valve in an emergency, thereby effectively improving safety.

[0043] There are two radial slots 7 and two axial slots 8 , which can improve the stability of locking the connecting rod 5 .

[0044] Example 2:

[0045] This embodiment provides a gas valve switch self-locking structure. In addition to the technical solutions of the above embodiments, it also has the following technical features, including:

[0046] The elastic member 9 is installed in the valve body 1, and its two ends are respectively in contact with the valve body 1 and the clamping portion 6, and is used to limit the clamping portion 6 in the axial sliding groove 8;

[0047] The elastic member 9 can be a spring, and is sleeved on the valve stem 3 .

[0048] It can be seen from this embodiment that, through the provision of the elastic member 9, when the handle 4 is released after closing the gas valve, the elastic potential energy can be released, thereby pushing the clamping portion 6 into the axial slide groove 8, thereby improving the convenience of closing the valve. When the gas valve needs to be opened, it is necessary to overcome the elastic potential energy of the elastic member 9 to push the clamping portion 6 out of the axial slide groove 8 and then rotate it, thereby further improving safety.

[0049] Example 3:

[0050] This embodiment provides a gas valve switch self-locking structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0051] The valve body 1 is provided with a cylindrical portion 10 at the valve rod 3, and a counterbore 11 for installing the elastic member 9 is formed on the inner wall of the cylindrical portion 10;

[0052] The radial sliding groove 7 and the axial sliding groove 8 are both formed on the inner wall of the counterbore 11.

[0053] It can be seen from the embodiment that the cylindrical portion 10 facilitates the installation of the valve rod 3, and the counterbore 11 facilitates the built-in installation of the elastic member 9, thereby improving the stability of the compression and reset of the elastic member 9.

[0054] Embodiment 4:

[0055] The switching self-locking structure of the gas valve provided in the embodiment further has the following technical features in addition to the technical solutions of the above embodiments.

[0056] The inner wall of the end of the cylindrical portion 10 away from the valve core 2 is provided with a first annular groove 12, and a snap spring 13 is installed in the first annular groove 12 and used to limit the clamping portion 6 in the axial sliding groove 8.

[0057] It can be seen from the embodiment that the first annular groove 12 facilitates the limitation of the clamping portion 6 after installation by the snap spring 13, avoids the sliding of the clamping portion 6 out of the axial sliding groove 8, and improves the convenience of disassembly and assembly of the clamping portion 6.

[0058] Embodiment 5:

[0059] The switching self-locking structure of the gas valve provided in the embodiment further has the following technical features in addition to the technical solutions of the above embodiments.

[0060] The valve rod 3 is provided with a first insertion slot 14, and one end of the connecting rod 5 is inserted into the first insertion slot 14;

[0061] The axial dimension of the radial sliding groove 7 is greater than the axial dimension of the clamping portion 6, and the first insertion slot 14 allows the connecting rod 5 to be offset in the axial direction and always inserted into the first insertion slot 14.

[0062] It can be seen from the embodiment that the axial dimension of the radial sliding groove 7 is greater than the axial dimension of the clamping portion 6, i.e., the clamping portion 6 can be axially offset in the radial sliding groove 7, thereby avoiding the jamming of the handle 4 during rotation and improving the convenience of rotation.

[0063] When the connecting rod 5 is offset in the axial direction, it is always inserted into the first insertion slot 14, which can ensure the stability of the clamping between the connecting rod 5 and the valve rod 3.

[0064] Embodiment 6:

[0065] This embodiment provides a gas valve switch self-locking structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0066] A second slot 15 is provided in the handle 4, and the other end of the connecting rod 5 is inserted into the second slot 15;

[0067] The connecting rod 5 is fixedly connected to the inner wall of the second slot 15 , and specifically, an interference fit may be adopted.

[0068] It can be seen from this embodiment that by opening the second slot 15 in the handle 4 and then fixedly connecting it with the connecting rod 5, the connecting rod 5 is built in to ensure structural stability.

[0069] Example 7:

[0070] This embodiment provides a gas valve switch self-locking structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0071] The handle 4 extends toward one side of the valve body 1 to form a rim portion 40 , and the rim portion 40 wraps both the axial slide groove 8 and the radial slide groove 7 ;

[0072] The edging portion 40 and the handle 4 may be formed as an integrated structure.

[0073] It can be seen from this embodiment that by extending the handle 4 toward one side of the valve body 1 to form a edging portion 40, the axial slide groove 8 and the radial slide groove 7 are both wrapped therein, thereby effectively preventing dust and debris from invading the axial slide groove 8 and the radial slide groove 7, avoiding affecting the adjustment of the handle 4, and extending the service life.

[0074] Example 8:

[0075] This embodiment provides a gas valve switch self-locking structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0076] A second annular groove 16 is formed on the surface of the valve stem 3, and a sealing ring 17 is installed in the second annular groove 16;

[0077] The sealing ring 17 can be made of rubber.

[0078] It can be seen from this embodiment that the provision of the sealing ring 17 improves the sealing performance between the valve stem 3 and the inner wall of the cylindrical portion 10, prevents leakage, and improves safety.

[0079] The embodiments of the present application are described above with reference to the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection of the present application.

Claims

1. A gas valve switch self-locking structure, characterized in that: include: A valve body (1) is provided with a valve core (2) and a valve stem (3) installed therein, wherein one end of the valve stem (3) is clamped with the valve core (2) and the other end is connected to a handle (4); A connecting rod (5) is installed between the valve stem (3) and the handle (4) and is used to connect the handle (4) and the valve stem (3), and is provided with a clamping portion (6) on a radial surface; The valve body (1) is provided with a connected radial slot (7) and an axial slot (8) on its inner wall at the connecting rod (5), and the clamping portion (6) enters the axial slot (8) along the radial slot (7) to lock the handle (4) in the radial direction.

2. The gas valve switch self-locking structure according to claim 1, characterized in that: Also includes: The elastic member (9) is installed in the valve body (1), and its two ends respectively abut against the valve body (1) and the clamping portion (6), and is used to restrict the clamping portion (6) in the axial sliding groove (8).

3. The gas valve switch self-locking structure according to claim 2, characterized in that: The valve body (1) is formed with a cylindrical portion (10) at the valve stem (3), and a countersunk hole (11) for installing an elastic member (9) is opened inside the cylindrical portion (10); Wherein, the radial sliding groove (7) and the axial sliding groove (8) are both opened on the radial inner wall of the counterbore (11).

4. The gas valve switch self-locking structure according to claim 3, characterized in that: A first annular groove (12) is provided on the inner wall of the cylindrical portion (10) at one end away from the valve core (2), and a clamping spring (13) is installed in the first annular groove (12) and is used to restrict the clamping portion (6) in the axial sliding groove (8).

5. The gas valve switch self-locking structure according to claim 1, characterized in that: The valve stem (3) is provided with a first slot (14), and one end of the connecting rod (5) is inserted into the first slot (14); The axial dimension of the radial slot (7) is larger than the axial dimension of the clamping portion (6), and the first slot (14) allows the connecting rod (5) to deviate in the axial direction and always be inserted into the first slot (14).

6. The gas valve switch self-locking structure according to claim 5, characterized in that: A second slot (15) is provided in the handle (4), and the other end of the connecting rod (5) is inserted into the second slot (15); Wherein, the connecting rod (5) is fixedly connected to the inner wall of the second slot (15).

7. The gas valve switch self-locking structure according to claim 1, characterized in that: The handle (4) extends toward one side of the valve body (1) to form a rim portion (40), and the rim portion (40) wraps around both the axial sliding groove (8) and the radial sliding groove (7).

8. The gas valve switch self-locking structure according to claim 1, characterized in that: A second annular groove (16) is provided on the surface of the valve stem (3), and a sealing ring (17) is installed in the second annular groove (16).

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