Pipeline valve with self-locking structure

Abstract

The utility model discloses a pipeline valve with self -locking structure belongs to valve technical field, including valve body, the top rotation of valve body installs valve stem, the top of valve body and located the surface fixed mounting of valve stem has fixed pipe, the inner chamber rotation of fixed pipe is connected with the pipe of turning, the utility model discloses the cooperation of hand wheel, the pipe of turning, spacing unit, moving link and joint assembly can drive valve stem rotation, and then adjust pipeline valve opening and closing adjustment use, when adjusting, the user can twist drive screw rod and move moving link downwards, make the bottom of moving link and the top of valve stem joint together, after using, the user can reverse rotation drive screw rod, and the bottom of moving link and the top of valve stem are separated, prevent pipeline valve from being mistaken and causing valve stem rotation, through the setting of this device, possess can more relaxed reliable rotation valve stem, and make valve possess the advantage that self -locking function prevents mistaken operation.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a pipeline valve with a self-locking structure. Background Technology

[0002] A valve mounted on a pipeline includes a valve body, a valve stem, and a valve plate. The valve plate, located within the valve body, is used to open and close the passage. The tail end of the valve stem passes through the head end of the valve body and is linked to the valve plate. A handwheel is also located at the head end of the valve stem. During operation, operating the handwheel rotates the valve stem, thus opening and closing the valve plate. However, this method of using a handwheel to open or close the valve plate is prone to accidental operation, leading to unintended closure or opening of the valve plate. This not only affects work quality but can also pose serious safety hazards.

[0003] Patent CN220320452U discloses a pipeline valve with a self-locking structure. The handwheel assembly includes a follower ring and a movable ring. One end of the follower ring extends into the valve body, and the other end extends out of the valve body, rotating in conjunction with the valve body. The valve stem passes through the follower ring and is fixedly engaged with it. The movable ring is located outside the valve body and slides around the valve stem. The end face of the follower ring has annularly distributed engagement grooves, and the end face of the movable ring has engagement blocks adapted to the engagement grooves. The outer wall of the valve stem has a limiting member for restricting the movement of the movable ring. When the limiting member engages with the movable ring, the movable ring abuts against the follower ring, and the engagement block is embedded in the engagement groove. This utility model has a self-locking structure to prevent accidental valve opening, increasing the valve's safety performance.

[0004] The pipeline valve with a self-locking structure mentioned in the above patent requires pressing the valve stem towards the valve body when rotating it. Only when pressing can the engagement block be pressed into the engagement groove and the valve stem rotated. This operation is relatively laborious. Therefore, we need to propose a pipeline valve with a self-locking structure. Utility Model Content

[0005] The purpose of this utility model is to provide a pipeline valve with a self-locking structure, which has the advantages of being able to rotate the valve stem relatively easily and reliably, and having a self-locking function to prevent misoperation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a pipeline valve with a self-locking structure, including a valve body, a valve stem rotatably mounted on the top of the valve body, a fixed pipe fixedly mounted on the top of the valve body and on the surface of the valve stem, a rotating pipe rotatably connected to the inner cavity of the fixed pipe, a handwheel fixedly connected to the surface of the rotating pipe, a rotating assembly provided between the surface of the rotating pipe and the inner cavity of the fixed pipe, the rotating pipe being rotatably mounted in the inner cavity of the fixed pipe via the rotating assembly, a moving rod slidably connected to the inner cavity of the rotating pipe, a driving assembly for moving the moving rod mounted on the top of the rotating pipe, a snap-fit ​​assembly provided between the bottom end of the moving rod and the top end of the valve stem, and a limiting assembly for limiting the moving rod between the surface of the moving rod and the inner wall of the rotating pipe.

[0007] Preferably, the drive assembly includes a threaded hole at the top of the connecting rod, a positioning tube is fixedly installed at the top of the rotating tube, a drive screw is rotatably connected to the inner cavity of the positioning tube, and the bottom end of the drive screw passes through the positioning tube and the rotating tube in sequence and extends to the inner cavity of the rotating tube and is threadedly connected to the inner wall of the threaded hole.

[0008] Preferably, the top end of the rotating tube has a rotating hole adapted to the drive screw, and the surface of the drive screw is rotatably connected to the inner wall of the rotating hole.

[0009] Preferably, the rotating assembly includes a rotating ring fixedly installed on the surface of the rotating tube, and an annular groove is formed in the inner cavity of the fixed tube at a position corresponding to the rotating ring, and the surface of the rotating ring is rotatably connected to the inner wall of the annular groove.

[0010] Preferably, the limiting component includes limiting rods fixedly installed on both sides of the inner cavity of the rotating tube, and limiting grooves adapted to the limiting rods are provided on both sides of the moving rods, and the inner wall of the limiting grooves is slidably connected to the surface of the limiting rods.

[0011] Preferably, the locking assembly includes a locking block fixedly installed at the bottom of the moving rod, and the top of the valve stem has a locking groove adapted to the locking block, and the surface of the locking block locks into the inner wall of the locking groove.

[0012] Preferably, both sides of the valve body are connected to connecting pipes, and the end of the connecting pipe away from the valve body is fixedly connected to a mounting flange.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a handwheel, rotating pipe, limiting assembly, moving rod, and locking assembly to rotate the valve stem, thereby regulating the opening and closing of the pipeline valve. During adjustment, the user can turn the drive screw to move the moving rod downwards, causing the bottom end of the moving rod to engage with the top end of the valve stem. After use, the user can reverse the drive screw to separate the bottom end of the moving rod from the top end of the valve stem, preventing accidental valve stem rotation. This device allows for easy and reliable valve stem rotation and provides a self-locking function to prevent misoperation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the valve stem structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the fixed tube of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the rotating tube of this utility model.

[0019] In the diagram: 1. Valve body; 2. Valve stem; 3. Fixed pipe; 4. Rotary pipe; 5. Handwheel; 6. Moving rod; 7. Threaded hole; 8. Positioning pipe; 9. Drive screw; 10. Rotary hole; 11. Rotating ring; 12. Annular groove; 13. Limiting rod; 14. Limiting groove; 15. Locking block; 16. Locking groove; 17. Connecting pipe; 18. Mounting flange. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model provides a pipeline valve with a self-locking structure, including a valve body 1, with connecting pipes 17 connected to both sides of the valve body 1, and a mounting flange 18 fixedly connected to the end of the connecting pipe 17 away from the valve body 1. In this embodiment, the valve body 1 can be connected and installed together with the pipeline through the connecting pipe 17 and the mounting flange 18.

[0022] Preferably, a valve stem 2 is rotatably mounted on the top of the valve body 1, and a fixed tube 3 is fixedly mounted on the top of the valve body 1 and on the surface of the valve stem 2. A rotating tube 4 is rotatably connected to the inner cavity of the fixed tube 3, and a moving rod 6 is slidably connected to the inner cavity of the rotating tube 4. A drive assembly for moving the moving rod 6 is mounted on the top of the rotating tube 4. The drive assembly includes a threaded hole 7 opened at the top of the connecting rod. A positioning tube 8 is fixedly mounted on the top of the rotating tube 4. A drive screw 9 is rotatably connected to the inner cavity of the positioning tube 8. The bottom end of the drive screw 9 passes through the positioning tube 8 and the rotating tube 4 in sequence and extends to the inner cavity of the rotating tube 4 and is threadedly connected to the inner wall of the threaded hole 7. A snap-fit ​​assembly is provided between the bottom end of the moving rod 6 and the top end of the valve stem 2. The snap-fit ​​assembly includes a snap block 15 fixedly mounted on the bottom end of the moving rod 6. A snap groove 16 adapted to the snap block 15 is opened at the top end of the valve stem 2. The surface of the snap block 15 snaps against the inner wall of the snap groove 16.

[0023] By using the drive assembly and the snap-fit ​​assembly together, the moving rod 6 and the valve stem 2 can be snapped and fixed together. Specifically, when the valve stem 2 needs to be rotated, the user can first rotate the drive screw 9. The rotation of the drive screw 9 will drive the moving rod 6 to move. The movement of the moving rod 6 will drive the snap-fit ​​block 15 to move downward, snapping the snap-fit ​​block 15 into the inner cavity of the slot 16, thereby connecting the moving rod 6 and the valve stem 2 together. After the valve is used, the user can rotate the drive screw 9 in the opposite direction to separate the moving rod 6 from the flange to prevent accidental contact that could cause the valve stem 2 to rotate.

[0024] The top end of the rotating tube 4 has a rotating hole 10 that matches the drive screw 9, and the surface of the drive screw 9 is rotatably connected to the inner wall of the rotating hole 10. The rotating hole 10 provides rotation space for the drive screw 9 at the top end of the rotating tube 4.

[0025] It is worth noting that a handwheel 5 is fixedly connected to the surface of the rotating tube 4, and a rotating assembly is provided between the surface of the rotating tube 4 and the inner cavity of the fixed tube 3. The rotating tube 4 is rotatably installed in the inner cavity of the fixed tube 3 through the rotating assembly. The rotating assembly includes a rotating ring 11 fixedly installed on the surface of the rotating tube 4, and an annular groove 12 is provided in the inner cavity of the fixed tube 3 at the corresponding position of the rotating ring 11. The surface of the rotating ring 11 is rotatably connected to the inner wall of the annular groove 12.

[0026] By using the rotating assembly, the rotating tube 4 can be rotatably installed inside the fixed tube 3. After the user engages the bottom end of the moving rod 6 with the top end of the valve stem 2, they can rotate the handwheel 5. The rotation of the handwheel 5 will drive the rotating tube 4 to rotate, which in turn drives the valve stem 2 to rotate via the moving rod 6 and the engaging assembly, thereby adjusting the opening and closing of the valve. When the rotating tube 4 rotates, it will cause the rotating ring 11 to rotate within the annular groove 12.

[0027] Furthermore, a limiting component for limiting the movement of the moving rod 6 is provided between the surface of the moving rod 6 and the inner wall of the rotating tube 4. The limiting component includes a limiting rod 13 fixedly installed on both sides of the inner cavity of the rotating tube 4. A limiting groove 14 adapted to the limiting rod 13 is provided on both sides of the moving rod 6. The inner wall of the limiting groove 14 is slidably connected to the surface of the limiting rod 13.

[0028] By setting the limiting component, the stability of the moving rod 6 can be improved. When the moving rod 6 moves, it will drive the limiting groove 14 to slide on the surface of the limiting rod 13. Furthermore, through the cooperation of the limiting rod 13 and the limiting groove 14, the moving rod 6 can also rotate synchronously with the rotating tube 4.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipeline valve with a self-locking structure, comprising a valve body (1), wherein a valve stem (2) is rotatably mounted on the top of the valve body (1), characterized in that: A fixed tube (3) is fixedly installed on the top of the valve body (1) and on the surface of the valve stem (2). A rotating tube (4) is rotatably connected to the inner cavity of the fixed tube (3). A handwheel (5) is fixedly connected to the surface of the rotating tube (4). A rotating assembly is provided between the surface of the rotating tube (4) and the inner cavity of the fixed tube (3). The rotating tube (4) is rotatably installed in the inner cavity of the fixed tube (3) through the rotating assembly. A moving rod (6) is slidably connected to the inner cavity of the rotating tube (4). A driving assembly for moving the moving rod (6) is installed on the top of the rotating tube (4). A snap-fit ​​assembly is provided between the bottom end of the moving rod (6) and the top end of the valve stem (2). A limiting assembly for limiting the moving rod (6) is provided between the surface of the moving rod (6) and the inner wall of the rotating tube (4).

2. A pipeline valve with a self-locking structure according to claim 1, characterized in that: The drive assembly includes a threaded hole (7) at the top of the connecting rod, a positioning tube (8) is fixedly installed at the top of the rotating tube (4), a drive screw (9) is rotatably connected to the inner cavity of the positioning tube (8), and the bottom end of the drive screw (9) passes through the positioning tube (8) and the rotating tube (4) in sequence and extends to the inner cavity of the rotating tube (4) and is threaded to the inner wall of the threaded hole (7).

3. A pipeline valve with a self-locking structure according to claim 2, characterized in that: The top end of the rotating tube (4) is provided with a rotating hole (10) that is compatible with the drive screw (9), and the surface of the drive screw (9) is rotatably connected to the inner wall of the rotating hole (10).

4. A pipeline valve with a self-locking structure according to claim 1, characterized in that: The rotating assembly includes a rotating ring (11) fixedly installed on the surface of the rotating tube (4), and an annular groove (12) is provided in the inner cavity of the fixed tube (3) at the corresponding position of the rotating ring (11). The surface of the rotating ring (11) is rotatably connected to the inner wall of the annular groove (12).

5. A pipeline valve with a self-locking structure according to claim 1, characterized in that: The limiting assembly includes limiting rods (13) fixedly installed on both sides of the inner cavity of the rotating tube (4). Both sides of the moving rod (6) are provided with limiting grooves (14) that are adapted to the limiting rods (13). The inner wall of the limiting grooves (14) is slidably connected to the surface of the limiting rods (13).

6. A pipeline valve with a self-locking structure according to claim 1, characterized in that: The snap-fit ​​assembly includes a snap-fit ​​block (15) fixedly installed at the bottom of the moving rod (6), and the top of the valve stem (2) is provided with a snap-fit ​​groove (16) adapted to the snap-fit ​​block (15), and the surface of the snap-fit ​​block (15) snaps into the inner wall of the snap-fit ​​groove (16).

7. A pipeline valve with a self-locking structure according to claim 1, characterized in that: Both sides of the valve body (1) are connected to a connecting pipe (17), and the end of the connecting pipe (17) away from the valve body (1) is fixedly connected to a mounting flange (18).

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