Self-locking ball valve

Abstract

The utility model provides a self-locking ball valve, and belongs to the technical field of valves. The self-locking ball valve solves the problem that an existing valve is easily opened or closed due to mistaken touch, and comprises a valve body, a valve rod and a hand wheel, a water inlet and a water outlet are formed in the valve body, a control opening cavity is formed between the water inlet and the water outlet, a plurality of locking teeth are annularly and evenly distributed on the outer wall of the opening cavity, the valve rod is arranged in the control opening cavity, and the hand wheel is arranged on the valve rod. The hand wheel is arranged on the valve rod, a locking wheel is arranged at the bottom of the hand wheel, an inner gear ring embedded with locking teeth is arranged at the bottom of the locking wheel, a detachable positioning ring is arranged at the top of the valve rod, and a supporting spring is arranged between the positioning ring and the hand wheel.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field relates to a ball valve especially, a kind of self-locking ball valve. BACKGROUND

[0002] Ball valve is a kind of commonly used fluid control valve, its core component is a ball with through-hole, and the opening or closing of fluid is realized by rotating 90 degrees. Ball valve has the advantages of simple structure, good sealing, easy operation, small fluid resistance, etc., suitable for water, oil, gas and other media.

[0003] Ball valve is easy to be mistaken, mainly because its operation design is extremely simple and intuitive. Ball valve is usually equipped with a handle or lever, only need to be rotated 90 degrees to realize opening or closing, this fast, light operation mode improves efficiency, also increases the risk of misoperation. Especially in small space, equipment-intensive or personnel in a hurry working environment, handle can be rotated due to accidental collision, mistaken or operator's negligence, resulting in accidental change of valve state, so the structure needs to be designed to make ball valve have anti-mistaken self-locking. SUMMARY

[0004] The utility model aims at the above-mentioned problems existing in prior art, provide a kind of self-locking ball valve of anti-mistaken opening.

[0005] The utility model discloses a kind of self-locking ball valves, it is characterized in that, including valve main body, valve stem, hand wheel, the valve main body is equipped with water inlet and water outlet, located in the control opening cavity between water inlet and water outlet, and the opening cavity outer wall is annularly distributed with several locking teeth, the valve stem is placed in control opening cavity, the hand wheel is equipped in valve stem, the hand wheel bottom is equipped with locking wheel, the locking wheel bottom is equipped with the inner gear ring of embedding locking tooth, the valve stem top is equipped with the detachable positioning ring, located in the supporting spring between positioning ring and hand wheel.

[0006] In the above-mentioned self-locking ball valve, the positioning ring side wall is equipped with several opening cavities, and the positioning ring is equipped with flexible cap.

[0007] In the above-mentioned self-locking ball valve, the locking wheel and hand wheel are equipped with the connection thread that mutually engages.

[0008] In the above-mentioned self-locking ball valve, the valve main body is equipped with opening mark, located in the indicating arrow on the locking wheel.

[0009] In the above-mentioned self-locking ball valve, the hand wheel is equipped with several upwardly bent spokes, located in the spoke terminal is equipped with the rim that acts as a connection, the flexible cap top is equipped with arc-shaped groove.

[0010] Compared with the prior art, the self-locking ball valve achieves automatic locking by setting gear engagement between the valve body and the control assembly, opening or closing by gear engagement, and increasing the convenience in use by the spring. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic diagram of the self-locking ball valve.

[0012] Figure 2 is a structural schematic diagram of the self-locking ball valve.

[0013] Figure 3 is a structural schematic diagram of the valve rod of the self-locking ball valve.

[0014] Figure 4 is a structural schematic diagram of the self-locking ball valve in embodiment two.

[0015] In the figure, 1, indicating arrow; 2, locking tooth; 3, opening mark; 4, water inlet; 5, valve body; 6, water outlet; 7, control opening cavity; 8, locking wheel; 9, arc-shaped groove; 10, hand wheel; 11, positioning ring; 12, flexible cap; 13, supporting spring; 14, connecting thread; 15, opening cavity; 16, wheel rim; 17, spoke; 18, valve rod; 19, inner tooth ring. DETAILED DESCRIPTION

[0016] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0017] As Figure 1 , 2 , 3, 4, the self-locking ball valve comprises a valve body 5, a valve rod 18 and a hand wheel 10, the valve body 5 is provided with a water inlet 4 and a water outlet 6, a control opening cavity 7 is arranged between the water inlet 4 and the water outlet 6, a plurality of locking teeth 2 are uniformly distributed on the outer wall of the opening cavity 15 in a ring shape, the valve rod 18 is arranged in the control opening cavity 7, the hand wheel 10 is arranged on the valve rod 18, the bottom of the hand wheel 10 is provided with a locking wheel 8, the bottom of the locking wheel 8 is provided with an inner tooth ring 19 embedded with the locking teeth 2, the top of the valve rod 18 is provided with a detachable positioning ring 11, a supporting spring 13 is arranged between the positioning ring 11 and the hand wheel 10, when in use, the hand wheel 10 is gripped and pulled by fingers, so that the locking teeth 2 are disengaged from the inner tooth ring 19, and the hand wheel 10 can be rotated, after the hand wheel 10 is released, the locking wheel 8 moves downward under the supporting action of the spring, so that the locking teeth 2 are re-engaged with the inner tooth ring 19, and automatic locking is achieved.

[0018] Preferably, a plurality of open cavities 15 are formed in the side wall of the positioning ring 11, and a flexible cap 12 is arranged on the positioning ring 11. The open cavities 15 increase the contact area between the hand or the workpiece and the open cavities 15 during disassembly, and facilitate the attachment of the flexible cap 12. The flexible cap 12 reduces the pressing of the palm during the control of the valve, increases the comfort during use, and reduces the rain erosion that causes the positioning ring 11 to be stuck.

[0019] Preferably, the locking wheel 8 and the hand wheel 10 are provided with interlocking connection threads 14. The locking wheel 8 and the hand wheel 10 are connected through the connection threads 14, which increases the convenience of disassembling the locking wheel 8, and the rotation control of the hand wheel 10 is more diversified by selecting the locking wheel 8 with different inner tooth rings 19.

[0020] Preferably, in example one, the locking wheel 8 with an intermittent gear is selected to control the rotation angle of the valve rod 18, thereby controlling the angle of single rotation opening and closing, and realizing the quantitative opening of the valve.

[0021] Preferably, the valve body 5 is provided with an opening mark 3, and the locking wheel 8 is provided with an indicating arrow 1. The indicating arrow 1 can display the opening and closing degree of the ball valve, thereby facilitating the user to control the opening and closing of the ball valve.

[0022] Preferably, the hand wheel 10 is provided with a plurality of upwardly bent spokes 17, the end of the spoke 17 is provided with a rim 16 for connection, and the top of the flexible cap 12 is provided with an arc-shaped groove 9.

[0023] Preferably, in example two, when the valve needs to be frequently controlled for a short time, a stick or the like is used to connect the top of the flexible cap 12 and the bottom of the rim 16, so that the inner tooth ring 19 and the locking teeth 2 are disengaged, thereby realizing the non-locking setting. The stick is removed, and the locking is realized under the action of the spring.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0025] Although the terms such as indicating arrow 1, locking tooth 2, opening mark 3, water inlet 4, valve body 5, water outlet 6, control opening cavity 7, locking wheel 8, arc-shaped groove 9, hand wheel 10, positioning ring 11, flexible cap 12, supporting spring 13, connection thread 14, open cavity 15, rim 16, spoke 17, valve rod 18, inner tooth ring 19, etc. are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A self-locking ball valve, characterized in that, Including valve body (5), valve stem (18), hand wheel (10), the valve body (5) is equipped with water inlet (4) and water outlet (6), is located between the control opening cavity (7) of water inlet (4) and water outlet (6), and the annularly distributed locking tooth (2) of the opening cavity (15) outer wall, the valve stem (18) is placed in control opening cavity (7), the hand wheel (10) is located on valve stem (18), the bottom of hand wheel (10) is equipped with locking wheel (8), the bottom of locking wheel (8) is equipped with the inner tooth ring (19) of embedding locking tooth (2), the top of valve stem (18) is equipped with the detachable positioning ring (11), is located between the supporting spring (13) of positioning ring (11) and hand wheel (10).

2. A self-sealing ball valve according to claim 1, wherein The side wall of the positioning ring (11) is provided with a plurality of opening cavities (15), and the positioning ring (11) is provided with a flexible cap (12).

3. A self-sealing ball valve according to claim 1, wherein The locking wheel (8) and the hand wheel (10) are provided with the connecting threads (14) engaged with each other.

4. A self-sealing ball valve according to claim 1, wherein The valve body (5) is provided with an opening mark (3), and the locking wheel (8) is provided with an indication arrow (1).

5. A self-sealing ball valve according to claim 2, wherein The hand wheel (10) is provided with a plurality of upwardly bent spokes (17), and the end of the spoke (17) is provided with a wheel rim (16) for connection. The top of the flexible cap (12) is provided with an arc-shaped groove (9).

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