False touch prevention gas ball valve

Abstract

The utility model discloses an anti-mistaken-touch fuel gas ball valve which comprises a fuel gas ball valve body, a fixing block is fixed to the top of the fuel gas ball valve body, a valve rod is installed on the fixing block, according to the anti-mistaken-touch fuel gas ball valve, a hand wheel is pulled upwards with a hand, a hollow gear can move upwards to be separated from a gear groove, a spring is stretched at the same time, the hand wheel is rotated, and the hand wheel is rotated. The hand wheel drives the valve rod to rotate through the limiting block and the limiting groove, the valve rod drives the ball body in the gas ball valve body to rotate, so that opening and closing of a channel in the gas ball valve body can be controlled, the hand is released, and under the elastic action of the spring, the hollow gear moves downwards and can be clamped with the gear groove, so that the valve rod and the hand wheel can be fixed; the situation that the hand wheel rotates due to the fact that a maintainer touches the hand wheel by mistake is prevented, a channel in the gas ball valve body can be continuously in a closed state, the safety of the maintainer during maintenance is guaranteed, and meanwhile gas leakage and waste are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas ball valves, in particular to an anti-mistaken-collision gas ball valve. Background Art

[0002] Gas ball valve is a valve that uses a ball with a circular channel as the opening and closing part. The ball rotates with the valve stem to realize the opening and closing action. It is suitable for frequent operation and can be opened and closed quickly and easily.

[0003] When a gas supply pipeline leaks or fails and needs to be repaired, the ball valve needs to be closed and kept closed during the repair process. However, after closing, the existing ball valve can be directly opened again by a hand wheel, which means that the ball valve cannot be kept closed during the repair process. When the ball valve is reopened due to careless touch by a worker during the repair process, it is easy to cause a large amount of gas leakage, resulting in a waste of resources and even a threat to the personal safety of the maintenance personnel.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original gas ball valve. Utility Model Content

[0005] The utility model aims to provide a gas ball valve which can prevent accidental collision, so as to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-mistaken-touch gas ball valve, comprising a gas ball valve body, a fixing block is fixed on the top of the gas ball valve body, and a valve stem is installed on the fixing block;

[0007] A movable sleeve is nested on the outer side of the valve stem, a hand wheel is fixed on the top of the movable sleeve, and a limiting mechanism is arranged between the valve stem and the movable sleeve;

[0008] A reset mechanism is provided between the valve stem and the movable sleeve;

[0009] A gear groove is formed on the top of the fixed block, and a hollow gear is nested and fixed on the bottom of the outer side of the movable sleeve, and the hollow gear is located inside the gear groove.

[0010] Preferably, the outer wall of the valve stem and the inner wall of the movable sleeve are in contact with each other, and the bottom of the movable sleeve and the bottom of the gear groove are in contact with each other.

[0011] Preferably, the gear groove and the hollow gear are snap-fittedly connected.

[0012] Preferably, the reset mechanism comprises a groove, the top of the valve stem is provided with a groove, a spring is fixed to the bottom of the groove, and the top of the spring is fixedly connected to the top of the movable sleeve.

[0013] Preferably, the limiting mechanism comprises a limiting block, the inner wall of the movable sleeve is fixed with the limiting block, the end of the limiting block is located inside a limiting groove, and the limiting groove is opened on the outer side of the valve stem.

[0014] Preferably, the limit block and the limit groove constitute a locking sliding structure, and two limit blocks and two limit grooves are symmetrically distributed about the central axis of the valve stem.

[0015] Preferably, central axes of the valve stem, movable sleeve, hand wheel, groove and spring coincide with each other.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the anti-accidental-touch gas ball valve can be operated by pulling the hand wheel upwards with the hand, so that the hollow gear can move upwards and separate from the gear groove, and the spring is stretched at the same time, and the hand wheel is rotated. The hand wheel drives the valve stem to rotate through the limit block and the limit groove, and the valve stem drives the ball inside the gas ball valve body to rotate, thereby controlling the opening and closing of the internal channel of the gas ball valve body. When the hand is released, the hollow gear moves downwards under the elastic force of the spring and can engage with the gear groove, so that the valve stem and the hand wheel can be fixed, preventing maintenance personnel from accidentally touching the hand wheel and causing the hand wheel to rotate, so that the channel inside the gas ball valve body can be continuously in a closed state, ensuring the safety of maintenance personnel during maintenance, while avoiding gas leakage and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 This is a schematic diagram of the installation structure of the hollow gear of the utility model from a top view;

[0020] Figure 4 This is a schematic diagram of the top view of the hand wheel structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the installation structure of the movable sleeve of the utility model in a top view and section.

[0022] In the figure: 1. gas ball valve body; 2. fixing block; 3. valve stem; 4. movable sleeve; 5. hand wheel; 6. groove; 7. spring; 8. limit block; 9. limit groove; 10. gear groove; 11. hollow gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution: an anti-mistaken-touch gas ball valve, comprising a gas ball valve body 1, a fixing block 2 is fixed on the top of the gas ball valve body 1, and a valve stem 3 is installed on the fixing block 2;

[0025] A movable sleeve 4 is nested on the outer side of the valve stem 3, a hand wheel 5 is fixed on the top of the movable sleeve 4, a limiting mechanism is arranged between the valve stem 3 and the movable sleeve 4, the limiting mechanism comprises a limiting block 8, a limiting block 8 is fixed on the inner wall of the movable sleeve 4, the end of the limiting block 8 is located inside the limiting groove 9, the limiting groove 9 is arranged on the outer side of the valve stem 3, the limiting block 8 and the limiting groove 9 constitute a locking sliding structure, two limiting blocks 8 and two limiting grooves 9 are symmetrically distributed about the central axis of the valve stem 3, the outer wall of the valve stem 3 and the inner wall of the movable sleeve 4 are fitted together, the bottom of the movable sleeve 4 and the bottom of the gear groove 10 are fitted together, it is ensured that when the movable sleeve 4 is rotated, the movable sleeve 4 can drive the valve stem 3 to rotate through the limiting block 8 and the limiting groove 9, and the movable sleeve 4 can move up and down on the valve stem 3 at the same time;

[0026] A reset mechanism is provided between the valve stem 3 and the movable sleeve 4, and the reset mechanism includes a groove 6. The top of the valve stem 3 is provided with a groove 6, and a spring 7 is fixed to the bottom of the groove 6. The top of the spring 7 is fixedly connected to the top of the movable sleeve 4. The central axes of the valve stem 3, the movable sleeve 4, the hand wheel 5, the groove 6 and the spring 7 coincide with each other, ensuring that the elastic force generated by the spring 7 can make the valve stem 3 and the movable sleeve 4 engage.

[0027] A gear groove 10 is provided at the top of the fixed block 2, and a hollow gear 11 is nested and fixed at the bottom outside the movable sleeve 4. The hollow gear 11 is located inside the gear groove 10. The gear groove 10 and the hollow gear 11 are snap-fitted together to ensure that the position of the movable sleeve 4 can be fixed when the gear groove 10 and the hollow gear 11 are snap-fitted together.

[0028] Working principle: When using the anti-accidental-touch gas ball valve, first pull the handwheel 5 upwards by hand, then the handwheel 5 drives the movable sleeve 4, the limit block 8 and the hollow gear 11 to move upwards at the same time, and the spring 7 is stretched at the same time until the gear groove 10 and the hollow gear 11 are separated, and then the handwheel 5 is rotated. At this time, the handwheel 5 drives the valve stem 3 to rotate through the limit block 8 and the limit groove 9, and the valve stem 3 drives the ball inside the gas ball valve body 1 to rotate, so as to control the opening and closing of the internal channel of the gas ball valve body 1. When the internal channel of the gas ball valve body 1 is closed, When in the state, release your hand at this time, and under the elastic force of the spring 7, the movable sleeve 4, the limit block 8 and the hollow gear 11 move downward at the same time until the hollow gear 11 engages with the gear groove 10. At this time, the movable sleeve 4 completes the fixation of the valve stem 3 and the handwheel 5 through the limit block 8 and the limit groove 9, preventing the maintenance personnel from accidentally touching the handwheel 5, causing the handwheel 5 to rotate, so that the channel inside the gas ball valve body 1 can be continuously in a closed state, ensuring the safety of the maintenance personnel during maintenance, while avoiding gas leakage and waste.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas ball valve for preventing accidental contact, comprising a gas ball valve body (1), characterized in that: A fixing block (2) is fixed on the top of the gas ball valve body (1), and a valve stem (3) is mounted on the fixing block (2); A movable sleeve (4) is nested on the outer side of the valve stem (3), a hand wheel (5) is fixed on the top of the movable sleeve (4), and a limiting mechanism is provided between the valve stem (3) and the movable sleeve (4); A reset mechanism is provided between the valve stem (3) and the movable sleeve (4); A gear groove (10) is provided on the top of the fixed block (2), and a hollow gear (11) is nested and fixed on the bottom of the outer side of the movable sleeve (4), and the hollow gear (11) is located inside the gear groove (10).

2. The anti-accidental-touch gas ball valve according to claim 1, characterized in that: The outer wall of the valve stem (3) and the inner wall of the movable sleeve (4) fit together, and the bottom of the movable sleeve (4) and the bottom of the gear groove (10) fit together.

3. The anti-accidental-touch gas ball valve according to claim 1, characterized in that: The gear groove (10) and the hollow gear (11) are in a snap-fit ​​connection.

4. The anti-accidental-touch gas ball valve according to claim 1, characterized in that: The reset mechanism comprises a groove (6), the top of the valve stem (3) is provided with a groove (6), the bottom of the groove (6) is fixed with a spring (7), and the top of the spring (7) is fixedly connected to the top of the movable sleeve (4).

5. The anti-accidental-touch gas ball valve according to claim 1, characterized in that: The limiting mechanism comprises a limiting block (8), the limiting block (8) is fixed to the inner wall of the movable sleeve (4), the end of the limiting block (8) is located inside a limiting groove (9), and the limiting groove (9) is opened on the outer side of the valve stem (3).

6. The anti-accidental-touch gas ball valve according to claim 5, characterized in that: The limit block (8) and the limit groove (9) constitute a snap-fitting sliding structure, and two of the limit blocks (8) and two of the limit grooves (9) are symmetrically distributed about the central axis of the valve stem (3).

7. The anti-accidental-touch gas ball valve according to claim 4, characterized in that: The central axes of the valve stem (3), the movable sleeve (4), the hand wheel (5), the groove (6) and the spring (7) coincide with each other.

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