Forged valve body of small-caliber two-piece type floating ball valve

Abstract

The utility model discloses a forging valve body of a small-caliber two-piece floating ball valve, which belongs to the field of ball valves and comprises a valve body and a valve rod, a positioning piece is sleeved outside the valve rod, a wrench is fixedly connected outside the valve rod and positioned above the positioning piece through a nut, and a limit mechanism is arranged in the top surface of the wrench. The limiting mechanism comprises a guide rod, a compression spring, a movable plate, a limiting plate and a spring bolt, the arranged limiting mechanism is used in cooperation with the small-caliber two-piece type floating ball valve, and after the small-caliber two-piece type floating ball valve is closed or opened through a wrench, the wrench is limited through the limiting mechanism; the problem that the small-caliber two-piece type floating ball valve is opened or closed by mistake due to the fact that the wrench turns over after being touched by mistake can be effectively solved, potential safety hazards are prevented, and the wrench can have the mistaken touch prevention function when the small-caliber two-piece type floating ball valve is used. And therefore, the use safety of the small-caliber two-piece type floating ball valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of ball valves, and in particular to the forged valve body of a small-diameter two-piece floating ball valve. Background Technology

[0002] The small-diameter two-piece floating ball valve is a compact and easy-to-operate fluid control device. It consists of a valve body, ball, seat, sealing ring, and stem. The valve body is divided into a main valve body and a secondary valve body, connected by threads or bolts for easy installation and maintenance. The ball, acting as the opening and closing element, can rotate freely 90° to control the flow of fluid. When the ball rotates to be parallel to the pipeline axis, fluid flows smoothly; after rotating 90°, the ball blocks the fluid passage, achieving closure. When closed, the stem mechanically applies pressure to press the ball tightly against the seat, ensuring a seal. Its small-diameter design makes it suitable for pipeline systems with limited space and is widely used in applications requiring precise fluid flow control, such as petrochemical, power, and building water supply and drainage.

[0003] In the prior art, there is a Chinese utility model patent with publication number "CN216519716U" and patent name "A Novel Two-Piece Floating Ball Valve". This patent describes a technical solution including "a valve body, a valve cover movably connected to the right end of the valve body, a stud movably connected to the bottom side of the left end of the valve cover, the valve cover being movably connected to the left end of the valve body through the stud, a nut being sleeved on the left side of the stud, two sets of valve seats being fixedly connected to the inside of the valve body and the valve cover respectively, a ball being movably connected to the left end of the inside of the valve body, a valve stem being fixedly connected to the center of the upper end of the ball, the valve stem being movably connected to the inside of the upper end of the valve body, an electrostatic spring being provided between the valve stem and the ball, and a small ball being provided on the outside of the valve stem".

[0004] However, in actual use, the two-piece floating ball valve lacks a limit mechanism for the wrench after it is opened or closed. If the wrench is accidentally touched during operation, it will rotate, causing the valve's state to change. This can easily lead to safety hazards and reduce the safety of use.

[0005] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes a forged valve body for a small-diameter two-piece floating ball valve. Utility Model Content

[0006] The main purpose of this invention is to provide a forged valve body for a small-diameter two-piece floating ball valve, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The forged valve body of a small-diameter two-piece floating ball valve includes a valve body and a valve stem. A positioning plate is fitted on the outside of the valve stem. A wrench is fixedly connected to the outside of the valve stem and above the positioning plate by a nut. A limiting mechanism is provided in the top surface of the wrench. The limiting mechanism includes a guide rod, a compression spring, a movable plate, a limiting plate, and a locking tongue. The guide rod is fixedly connected in the top surface of the wrench, and the compression spring is sleeved on the outside of the guide rod. The movable plate is sleeved on the outside of the guide rod through a guide hole on the side wall and fixedly connected to one end of the compression spring. The limiting plate is fixedly connected to the side wall of the movable plate. The locking tongue is movably connected between symmetrical fixed blocks on the top surface of the movable plate by a rotating rod on one side.

[0009] Furthermore, vertical plates are fixedly installed on the left and rear sides of the top surface of the valve body, and limit ports are opened on the side walls of the vertical plates.

[0010] Furthermore, a transverse opening is provided on the right side of the top surface of the wrench, and a locking rod is fixedly installed on the top surface of the wrench to the left of the transverse opening.

[0011] Furthermore, the guide rod is fixedly installed inside the transverse opening, and a compression spring is fitted on the body of the guide rod. The left end of the compression spring is fixedly installed on the left side wall inside the transverse opening, and a movable plate passing through the transverse opening is fixedly installed on the right end of the compression spring. A guide hole is opened on the side wall of the movable plate, and the movable plate is movably installed together with the guide rod through the guide hole. A limit plate is also fixedly installed on the right side wall of the movable plate.

[0012] Furthermore, a set of symmetrical fixing blocks are fixedly installed on the top surface of the movable plate, and the side walls of the fixing blocks are provided with rotation holes.

[0013] Furthermore, a set of symmetrical rotating rods is fixedly installed on the right side of the latch, and the rotating rods are movably installed in the rotating hole. A transverse latch corresponding to the latch rod is also provided on the left side of the top surface of the latch.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the limiting mechanism, in conjunction with the use of the small-diameter two-piece floating ball valve, allows the valve to be opened or closed using a wrench. The wrench will then be positioned horizontally with one of the vertical plates mounted on the valve body. At this point, pulling the latch will center the locking rod in the horizontal latch. Rotating the rod upwards will flip the latch, causing the locking rod to move out of the horizontal latch, releasing the latch's restriction. Releasing the pulling force on the latch allows the compression spring to elastically extend and push the movable plate, causing it to move through the guide hole on the side wall along the guide rod within the horizontal opening. Once the limiting plate on the side wall of the movable plate is inserted into the limiting slot opened on the corresponding side wall of the vertical plate, it can limit the wrench. Thus, when the small-diameter two-piece floating ball valve is closed or opened by the wrench, the limiting mechanism further limits the wrench, effectively preventing the wrench from flipping over after being accidentally touched, which could lead to the small-diameter two-piece floating ball valve being accidentally opened or closed. This prevents safety hazards and gives the wrench an anti-accidental touch function when using the small-diameter two-piece floating ball valve, thereby improving the safety of using the small-diameter two-piece floating ball valve. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the valve body of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the wrench of this utility model;

[0019] Figure 4 This is a structural breakdown diagram of the limiting mechanism of this utility model.

[0020] In the diagram: 1. Valve body; 2. Valve stem; 3. Positioning plate; 4. Nut; 5. Wrench; 6. Limiting mechanism; 7. Vertical plate; 8. Limiting port; 9. Horizontal port; 10. Locking rod; 11. Guide rod; 12. Compression spring; 13. Movable plate; 14. Guide hole; 15. Limiting plate; 16. Fixing block; 17. Rotating hole; 18. Locking tongue; 19. Rotating rod; 20. Horizontal locking slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0023] like Figure 1 - Figure 4 As shown, the forged valve body of the small-diameter two-piece floating ball valve includes a valve body 1 and a valve stem 2. A positioning plate 3 is fitted on the outside of the valve stem 2. A wrench 5 is fixedly connected to the outside of the valve stem 2 and above the positioning plate 3 by a nut 4. A limiting mechanism 6 is provided in the top surface of the wrench 5. The limiting mechanism 6 includes a guide rod 11, a compression spring 12, a movable plate 13, a limiting plate 15, and a locking tongue 18. The guide rod 11 is fixedly connected in the top surface of the wrench 5, and the compression spring 12 is fitted on the outside of the guide rod 11. The movable plate 13 is fitted on the outside of the guide rod 11 through a guide hole 14 on the side wall and fixedly connected to one end of the compression spring 12. The limiting plate 15 is fixedly connected to the side wall of the movable plate 13. The locking tongue 18 is movably connected between the fixed blocks 16 symmetrically positioned on the top surface of the movable plate 13 by a rotating rod 19 on one side.

[0024] like Figure 2 As shown, vertical plates 7 are fixedly installed on the top left and rear sides of the valve body 1, and limit ports 8 are opened on the side wall of the vertical plates 7. The two vertical plates 7 are respectively corresponding to the positions of the wrench 5 when opening and closing the small-diameter two-piece floating ball valve, and the limit ports 8 opened on the side wall of the vertical plates 7 are used to cooperate with the limit plate 15 to limit the wrench 5.

[0025] like Figure 3 As shown, a horizontal opening 9 is provided on the right side of the top surface of the wrench 5. The horizontal opening 9 is used to cooperate with the movable plate 13 to realize the horizontal movement operation. A locking rod 10 is also fixedly installed on the top surface of the wrench 5 on the left side of the horizontal opening 9. The locking rod 10 can restrict the locking tongue 18.

[0026] like Figure 4As shown, the guide rod 11 is fixedly installed inside the transverse opening 9, and a compression spring 12 is fitted onto the rod body of the guide rod 11. The left end of the compression spring 12 is fixedly installed on the left side wall inside the transverse opening 9, and a movable plate 13 passing through the transverse opening 9 is fixedly installed on the right end of the compression spring 12. A guide hole 14 is provided on the side wall of the movable plate 13, and the movable plate 13 is movably installed together with the guide rod 11 through the guide hole 14. A limit plate 15 is also fixedly installed on the right side wall of the movable plate 13. When the compression spring 12 loses its limiting force, it will elastically extend. The operation is restored, and under the elastic force, the movable plate 13 is pushed so that the movable plate 13 moves out through the guide hole 14 opened on the side wall and along the guide rod 11 into the horizontal opening 9 until the limiting plate 15 installed on the side wall of the movable plate 13 is inserted into the limiting opening 8 opened on the vertical plate 7 at the corresponding position. This can limit the rotation of the wrench 5, preventing the small-diameter two-piece floating ball valve from being accidentally opened or closed due to accidental contact with the wrench 5 after the small-diameter two-piece floating ball valve is opened and closed, so as to ensure the safety of the small-diameter two-piece floating ball valve in use.

[0027] like Figure 4 As shown, a set of symmetrical fixing blocks 16 are fixedly installed on the top surface of the movable plate 13, and a rotating hole 17 is provided on the side wall of the fixing block 16. The rotating hole 17 on the fixing block 16 is used to cooperate with the rotating rod 19 to realize the rotation operation.

[0028] A set of symmetrical rotating rods 19 are fixedly installed on the right side of the locking tongue 18, and the rotating rods 19 are movable. Figure 4 As shown, the locking tongue 18 is installed in the rotating hole 17. The left side of the top surface of the locking tongue 18 is also provided with a horizontal slot 20 corresponding to the locking rod 10. Pulling the locking tongue 18 and rotating the rod 19 to flip the locking tongue 18 upwards will move the locking rod 10 out of the horizontal slot 20, which will release the restriction on the locking tongue 18 and ensure that the limiting mechanism 6 can limit the wrench 5. Pulling the locking tongue 18 downwards will flip the locking tongue 18 and place the locking rod 10 in the horizontal slot 20, which will restrict the locking tongue 18 and release the limiting mechanism 6 from limiting the wrench 5, so that the small-diameter two-piece floating ball valve can be opened and closed by the wrench 5.

[0029] The specific operating principle of this small-diameter two-piece floating ball valve, in conjunction with the limiting mechanism 6 on the wrench 5 and the vertical plate 7 on the valve body 1, is as follows:

[0030] After the user opens or closes the small-diameter two-piece floating ball valve by rotating the wrench 5 90°, the position of the rotated wrench 5 will be at the same vertical level as one of the vertical plates 7 installed on the left and rear of the top surface of the valve body 1. The wrench 5 will be directly above one of the vertical plates 7 after rotation. At this time, to prevent the small-diameter two-piece floating ball valve from being accidentally closed or opened due to accidental contact with the wrench 5, which would affect the safety of use, the locking tongue 18 located on the top surface of the wrench 5 can be pulled to one side, so that the locking rod 10 installed on the top surface of the wrench 5 is placed on the top of the locking tongue 18. After the center position of the transverse latch 20 on the surface is reached, the latch 18 is flipped upwards, causing the rotating rods 19 installed at both ends of one side of the latch 18 to rotate within the rotating holes 17 opened on the side wall of the symmetrical fixing blocks 16 installed on the top surface of the movable plate 13. The latch 18 is flipped continuously until the latch rod 10 moves out of the transverse latch 20, releasing the pulling force on the latch 18. At the same time, the compression spring 12, which is fitted outside the guide rod 11, will elastically extend after losing the squeezing force from the latch 18 restricting the movable plate 13, and push the movable plate 13 through the guide hole opened on the side wall. 14. Move along the guide rod 11 within the transverse opening 9 on the top surface of the wrench 5 until the limiting plate 15 installed on the side wall of the movable plate 13 is inserted into the limiting opening 8 on the corresponding side wall of the vertical plate 7. This serves to limit the rotation of the wrench 5, preventing it from rotating under accidental contact or other influences. Therefore, after the small-diameter two-piece floating ball valve is closed or opened using the wrench 5, the limiting mechanism 6 further limits the wrench 5, effectively preventing it from flipping over after accidental contact and thus avoiding the accidental opening of the small-diameter two-piece floating ball valve. This design addresses the issue of closure, preventing potential safety hazards and ensuring that the wrench 5 has an anti-accidental contact function when using the small-diameter two-piece floating ball valve. This enhances the safety of using the small-diameter two-piece floating ball valve. If it is necessary to reopen or close the small-diameter two-piece floating ball valve, the locking tongue 18 can be pulled and flipped downwards to allow the locking rod 10 to re-enter the rotating rod 19 to restrict the locking tongue 18. This allows the limiting plate 15 to move out of the current limiting port 8. After opening or closing the small-diameter two-piece floating ball valve by rotating the wrench 5 by 90°, the limiting mechanism 6 can then re-limit the wrench 5.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A forged valve body for a small-diameter two-piece floating ball valve, comprising a valve body (1) and a valve stem (2), wherein a positioning plate (3) is fitted on the outside of the valve stem (2), and a wrench (5) is fixedly connected to the outside of the valve stem (2) and above the positioning plate (3) by a nut (4), characterized in that: The top surface of the wrench (5) is internally provided with a limiting mechanism (6), and the limiting mechanism (6) comprises a guide rod (11), a compression spring (12), a movable plate (13), a limiting plate (15) and a lock tongue (18), the guide rod (11) is fixedly connected in the top surface of the wrench (5), and the compression spring (12) is sleeved outside the guide rod (11); the movable plate (13) is sleeved outside the guide rod (11) through the guide hole (14) on the side wall and is fixedly connected at one end of the compression spring (12); the limiting plate (15) is fixedly connected on the side wall of the movable plate (13); and the lock tongue (18) is movably connected between the fixed blocks (16) symmetrically arranged on the top surface of the movable plate (13) through the rotating rods (19) on one side.

2. The forged valve body of a small bore two-piece floating ball valve according to claim 1, characterized in that: The top surface of the valve body (1) is fixedly provided with a vertical plate (7) on the left side and the rear side, and a limiting port (8) is formed in the side wall of the vertical plate (7).

3. The forged valve body of a small bore two-piece floating ball valve according to claim 2, characterized in that: The top surface of the wrench (5) is provided with a transverse port (9) on the right side, and a clamping rod (10) is fixedly installed on the left side of the top surface of the wrench (5) and located at the left side of the transverse port (9).

4. The forged valve body of a small bore two-piece floating ball valve according to claim 3, characterized in that: The guide rod (11) is fixedly installed inside the transverse port (9), and the compression spring (12) is sleeved on the rod body of the guide rod (11); the left end of the compression spring (12) is fixedly installed on the inner left side wall of the transverse port (9); the right end of the compression spring (12) is fixedly provided with the movable plate (13) penetrating through the transverse port (9); the side wall of the movable plate (13) is provided with the guide hole (14); the movable plate (13) is movably installed with the guide rod (11) through the guide hole (14); and the right side wall of the movable plate (13) is further fixedly provided with the limiting plate (15).

5. The forged valve body of a small bore two-piece floating ball valve according to claim 4, characterized in that: A plurality of symmetric fixed blocks (16) are fixedly installed on the top surface of the movable plate (13), and the side wall of the fixed block (16) is provided with a rotating hole (17).

6. The forged valve body of a small bore two-piece floating ball valve according to claim 5, characterized in that: A plurality of symmetric rotating rods (19) are fixedly installed on the right side of the lock tongue (18), and the rotating rods (19) are movably installed in the rotating hole (17); and the top surface of the lock tongue (18) is further provided with a transverse clamping port (20) corresponding to the clamping rod (10) on the left side.

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