Ball valve with limiting structure

Abstract

The utility model relates to a ball valve with a limiting structure, and belongs to the technical field of ball valves. Comprising a valve body, one end of the valve body is connected with a valve ball, one end of the valve ball is connected with a valve rod, one end of the valve rod is connected with a handle, the side face of the handle is connected with a fixing assembly, and the portion, located at the upper end of the valve body, of the side face of the valve rod is connected with a limiting assembly. According to the ball valve limiting device, the fixing assembly and the limiting assembly are arranged to be matched, rotation of the ball valve can be controlled by shifting the limiting plate upwards with fingers before rotation, the limiting plate is placed in the limiting groove corresponding to the lower end of the limiting plate when rotation is finished, and limiting of the ball valve can be completed. Limiting of the ball valve can be relieved while the rotating handle is held, and operation of a user is facilitated.

Description

Technical Field

[0001] The utility model relates to a ball valve with a limiting structure, belonging to the technical field of ball valves. Background Art

[0002] Ball valve is an important industrial valve, widely used in various pipeline systems to control the flow of fluids. Ball valve is suitable for a variety of media, including water, steam, oil, nitric acid, acetic acid, etc., as well as gas-solid and liquid-solid two-phase flow. It occupies an important position in industries such as petroleum refining, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration and steel.

[0003] Existing ball valves usually include a cylindrical valve body, a valve ball for controlling fluid flow, a valve stem connecting the valve ball and an operating mechanism, and a sealing ring to ensure the sealing of the device. After searching, the publication number CN219933016U relates to a limited ball valve, including a valve body, a first bolt is threadedly connected inside the valve body, a ball valve is rotatably connected inside the valve body, a valve stem is fixedly connected to the top of the ball valve, a handle is fixedly connected to the outer surface of the valve stem, and a limit assembly for limiting the valve stem is arranged on the top of the valve body. The limited ball valve limits the valve stem by pulling the pull cap upward and downward, which can prevent the valve stem from rotating due to accidental contact with the handle.

[0004] However, in actual use, it is necessary to add the process of pulling up or lowering the pull cap, which is rather cumbersome and not user-friendly in case of emergency. When the user does not know the relevant structure of the ball valve, it is easy to cause unnecessary trouble. Utility Model Content

[0005] The technical problem to be solved by the utility model is that when the ball valve is limited, a process of pulling up or lowering a pull cap needs to be added, and the steps are relatively complicated and easily cause unnecessary troubles.

[0006] In order to solve the above problems, the utility model provides a ball valve with a limit structure, comprising a valve body, one end of which is connected to a valve ball, characterized in that one end of the valve ball is connected to a valve stem, one end of the valve stem is connected to a handle, a side of the handle is connected to a fixing component, and a side of the valve stem located at the upper end of the valve body is connected to a limit component;

[0007] The fixing assembly comprises a connecting rod, a limiting plate and a fixing plate, wherein the connecting rod is fixedly connected to the inner side of the handle, the limiting plate is rotatably connected to the connecting rod, and the fixing plate is located on both sides of the limiting plate and fixedly connected to the connecting rod;

[0008] The limit assembly includes a connecting seat and a limit seat. The connecting seat is fixedly connected to the upper end of the valve body, the limit seat is connected to one side of the connecting seat, and the outer side of the limit seat is evenly distributed with limit grooves corresponding to the limit plate.

[0009] Furthermore: a valve seat adapted to the valve ball is provided in the valve body.

[0010] Further: a rubber pad is provided on the side of one end of the limiting plate.

[0011] Further: the shape of the limit seat is a 1 / 4 ring.

[0012] Further: the limit plate is located in the middle of the connecting rod, and the limit plate is in contact with the fixing plate.

[0013] Furthermore: the handle is U-shaped.

[0014] Furthermore: gripping parts are provided on both sides of the handle.

[0015] Compared with the prior art, the utility model has the following advantages: the patent sets a fixing component and a limit component to cooperate with each other, and the rotation of the ball valve can be controlled by pushing the limit plate upward with a finger before rotation. When the rotation is completed, the limit plate is placed in the limit groove corresponding to its lower end to complete the limiting of the ball valve. The utility model is simple and convenient, and the limit of the ball valve can be released while holding the rotating handle, which is convenient for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 The utility model is a structure of a ball valve with a limit structure Figure 1 .

[0018] Figure 2 The utility model is a structure of a ball valve with a limit structure Figure 2 .

[0019] Figure 3 The utility model is a structure of a ball valve with a limit structure Figure 3 .

[0020] Figure 4 The utility model is a structure of a ball valve with a limit structure Figure 4 .

[0021] In the attached figure:

[0022] 1. Valve body; 11. Valve ball; 12. Valve stem; 13. Handle; 14. Valve seat; 15. Grip; 2. Fixing assembly; 21. Connecting rod; 22. Limiting plate; 23. Fixing plate; 24. Rubber pad; 3. Limiting assembly; 31. Connecting seat; 32. Limiting seat; 33. Limiting groove. 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] Embodiment 1

[0025] The utility model provides a ball valve with a limiting structure, including a valve body 1, one end of the valve body 1 is connected to a valve ball 11, one end of the valve ball 11 is connected to a valve stem 12, one end of the valve stem 12 is connected to a handle 13, the side of the handle 13 is connected to a fixing component 2, the side of the valve stem 12 is located at the upper end of the valve body 1 and is connected to a limiting component 3, the fixing component 2 includes a connecting rod 21, a limiting plate 22, and a fixing plate 23, the connecting rod 21 is fixedly connected to the inner side of the handle 13, the limiting plate 22 is rotatably connected to the connecting rod 21, and the fixing plates 23 are located on both sides of the limiting plate 22 and The limit assembly 3 is fixedly connected to the connecting rod 21, and includes a connecting seat 31 and a limit seat 32. The connecting seat 31 is fixedly connected to the upper end of the valve body 1, and the limit seat 32 is connected to one side of the connecting seat 31. Limit grooves 33 corresponding to the limit plate 22 are evenly distributed on the outer side of the limit seat 32. When the ball valve needs to be rotated, the limit plate 22 can be pushed upward with a finger while holding the handle 13 to release the limit on the ball valve. When the rotation is completed and the ball valve needs to be limited, the limit plate 22 can be dropped into its corresponding limit groove 33.

[0026] Embodiment 2

[0027] On the basis of embodiment one, a valve seat 14 adapted to the valve ball 11 is provided in the valve body 1 for sealing the fluid. A rubber pad 24 is provided on the side of one end of the limit plate 22 to increase the friction between the limit plate 22 and the limit groove 33, making the limiting effect more stable. The limit seat 32 is in the shape of a 1 / 4 ring to achieve a fully open or fully closed state of the ball valve. The limit plate 22 is located in the middle position of the connecting rod 21, and the limit plate 22 is fitted with the fixed plate 23 to avoid displacement of the limit plate 22. The handle 13 is in a U-shape, and gripping parts 15 are provided on both sides of the handle 13 to increase the friction of gripping and facilitate gripping of the handle 13.

[0028] The working principle of the present application is: when the ball valve needs to be rotated, the limit plate 22 can be pushed upward with the finger while holding the handle 13 to release the limit of the ball valve, and then the ball valve can be rotated to the required angle through the handle 13. When the rotation is completed and the ball valve needs to be limited, the handle 13 is released to make the limit plate 22 fall into its corresponding limit groove 33. The utility model is simple and convenient, and the limit of the ball valve can be released while holding and rotating the handle 13, which is convenient for the user to operate.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A ball valve with a limit structure, comprising a valve body (1), one end of the valve body (1) being connected to a valve ball (11), characterized in that: One end of the valve ball (11) is connected to a valve stem (12), one end of the valve stem (12) is connected to a handle (13), a side of the handle (13) is connected to a fixing component (2), and a side of the valve stem (12) located at the upper end of the valve body (1) is connected to a limiting component (3); The fixing assembly (2) comprises a connecting rod (21), a limiting plate (22), and a fixing plate (23); the connecting rod (21) is fixedly connected to the inner side of the handle (13); the limiting plate (22) is rotatably connected to the connecting rod (21); and the fixing plate (23) is located on both sides of the limiting plate (22) and is fixedly connected to the connecting rod (21); The limit assembly (3) comprises a connecting seat (31) and a limit seat (32); the connecting seat (31) is fixedly connected to the upper end of the valve body (1); the limit seat (32) is connected to one side of the connecting seat (31); and limit grooves (33) corresponding to the limit plate (22) are evenly distributed on the outer side of the limit seat (32).

2. A ball valve with a limit structure according to claim 1, characterized in that: A valve seat (14) adapted to the valve ball (11) is arranged in the valve body (1).

3. The ball valve with a limiting structure according to claim 1, characterized in that: A rubber pad (24) is provided on the side surface of one end of the limiting plate (22).

4. A ball valve with a limit structure according to claim 3, characterized in that: The limiting seat (32) is in the shape of a quarter ring.

5. A ball valve with a limit structure according to claim 4, characterized in that: The limiting plate (22) is located in the middle of the connecting rod (21), and the limiting plate (22) is in close contact with the fixing plate (23).

6. The ball valve with a limiting structure according to claim 1, characterized in that: The handle (13) is in a U shape.

7. A ball valve with a limit structure according to claim 6, characterized in that: Grip portions (15) are provided on both sides of the handle (13).

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