Plunger stop valve

Abstract

The utility model relates to the technical field of valves, and discloses a plunger stop valve which comprises a valve body, a valve cover, a valve rod and a rocking wheel fixed at the top end of the valve rod, an inserting block is fixedly installed at the bottom of the rocking wheel, an inserting groove is formed in the top end of the valve rod, the bottom of the inserting block is movably inserted into an inner cavity of the inserting groove, and a disassembling assembly is arranged between the rocking wheel and the valve rod. A limiting assembly is arranged at the position, close to one side, of the top of the valve deck, the dismounting assembly comprises a cavity formed in the valve rod and vertical grooves formed in the positions, close to the two sides, of the bottom of an inner cavity of the cavity, and under the cooperative use of the dismounting assembly, the two vertical rods can rotate; the rotating directions of the two vertical rods can be opposite, then the rotating gears fixed to the vertical rods can rotate, the rack plates meshed with the rotating gears can rotate, then the clamping blocks can be far away from the inner cavities of the adjacent clamping grooves, the valve rod and the rocking wheel can be separated conveniently, and the rocking wheel replacement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a plunger shut-off valve. Background Technology

[0002] Gate valves, also known as stop valves, are one of the most widely used types of valves. They are popular because of the low friction between the sealing surfaces during opening and closing, making them relatively durable. They also have a small opening height, are easy to manufacture, and are convenient to maintain. They are suitable not only for medium and low pressure but also for high pressure.

[0003] In actual use, the gate valve is usually opened and closed by driving a rocker wheel. The rocker wheel and the drive rod are usually connected by threads. Under the influence of the external environment, the threaded connection is prone to rust. When the rocker wheel is damaged, it cannot be replaced quickly, which reduces the effectiveness of the device.

[0004] Therefore, we propose a plunger shut-off valve to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a plunger shut-off valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plunger stop valve, comprising a valve body, a valve cover, a valve stem, and a rocker wheel fixed to the top of the valve stem. A plug is fixedly installed at the bottom of the rocker wheel, and a slot is provided at the top of the valve stem. The bottom of the plug is movably inserted into the inner cavity of the slot. A disassembly assembly is provided between the rocker wheel and the valve stem, and a limit assembly is provided at the top of the valve cover near one side.

[0007] The disassembly assembly includes a cavity formed on the valve stem and vertical slots formed at the bottom of the cavity near both sides. Each slot has an opening on opposite sides of its inner cavity. A worm gear is rotatably connected to the other side of the cavity. One end of the worm gear extends through one side of the cavity and is fixedly fitted with a hexagonal nut. Worm wheels mesh with both the front and rear sides of the worm gear. A vertical rod is fixedly installed at the center of the top of each worm wheel. A rotating gear is fixedly installed at the top of each vertical rod, and a rack plate meshes with the rear side of each rotating gear. A locking block is fixedly installed on the opposite side of each rack plate. The locking blocks are slidably connected to adjacent openings. Slots are formed on both sides of the locking blocks, and the opposite sides of the locking blocks are movably inserted into the inner cavities of adjacent slots.

[0008] Preferably, each of the vertical rods has a rectangular block rotatably connected to its outer periphery near the middle position, and the rectangular blocks are fixedly connected to the inner cavity of the adjacent vertical grooves.

[0009] Preferably, the limiting assembly includes a limiting disc fixedly sleeved on the outer periphery of the valve stem near the bottom end and several limiting holes opened on the limiting disc. A mounting plate is fixedly installed on the top of the valve cover near one side, and a threaded tube is movably inserted through one side of the mounting plate. A drive wheel is fixedly sleeved on the outer periphery of the threaded tube near one end. A threaded rod is threadedly connected to the inner cavity of the threaded tube. A T-shaped limiting rod is fixedly installed at the end of the threaded rod, and the other end of the T-shaped limiting rod is inserted into the inner cavity of the adjacent limiting hole.

[0010] Preferably, the plurality of the limiting holes are arranged in a circular array with the top of the limiting disk as the center.

[0011] Preferably, a limiting telescopic rod is fixedly installed on one side of the T-shaped limiting rod near the top and bottom, and one end of the limiting telescopic rod is fixedly connected to the mounting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When separating the rocker wheel from the valve stem, the disassembly assembly allows the two vertical rods to rotate, and two worm gears mesh with the front and rear sides of the worm respectively. This causes the two vertical rods to rotate in opposite directions, which in turn causes the rotating gear fixed on the vertical rod to rotate. This, in turn, causes the rack plate meshing with it to rotate, thereby moving the locking block away from the inner cavity of the adjacent locking slot. This facilitates the separation of the valve stem from the rocker wheel and improves the efficiency of rocker wheel replacement.

[0014] 2. When the valve stem is limited, with the cooperation of the limiting component, the end of the T-shaped limiting rod can be inserted into the inner cavity of the adjacent limiting hole under the limitation of the two limiting telescopic rods, thereby limiting the limiting plate and preventing the valve stem from being rotated accidentally, which would affect the valve's operating status. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention;

[0016] Figure 2 This is a partial cross-sectional view of the present invention;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of section B in the middle.

[0019] In the diagram: 1. Valve body; 2. Valve cover; 3. Valve stem; 4. Rocker wheel; 5. Slot; 6. Insert block; 7. Slot; 8. Cavity; 9. Vertical slot; 10. Opening; 11. Worm gear; 12. Worm wheel; 13. Hexagonal nut; 14. Vertical rod; 15. Rectangular block; 16. Rotating gear; 17. Rack plate; 18. Slot; 19. Limiting disc; 20. T-shaped limiting rod; 21. Mounting plate; 22. Threaded pipe; 23. Drive wheel; 24. Threaded rod; 25. Limiting telescopic rod. 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. Example

[0021] Please see Figure 1-4 A plunger stop valve includes a valve body 1, a valve cover 2, a valve stem 3, and a rocker wheel 4 fixed to the top of the valve stem 3. A plug 6 is fixedly installed at the bottom of the rocker wheel 4. A slot 5 is opened at the top of the valve stem 3, and the bottom of the plug 6 is movably inserted into the inner cavity of the slot 5. A disassembly assembly is provided between the rocker wheel 4 and the valve stem 3. A limit assembly is provided at the top of the valve cover 2 near one side.

[0022] The disassembly assembly includes a cavity 8 formed on the valve stem 3 and vertical grooves 9 formed at the bottom of the cavity 8 near both sides. Openings 10 are formed on opposite sides of the inner cavity of the slot 5. A worm gear 11 is rotatably connected to the other side of the inner cavity of the cavity 8. One end of the worm gear 11 moves through one side of the inner cavity of the cavity 8 and is fixedly installed with a hexagonal nut 13. Worm wheels 12 are engaged on both the front and rear sides of the worm gear 11. Vertical rods 14 are fixedly installed at the top center of each worm wheel 12. Rotating gears 16 are fixedly installed at the top of each vertical rod 14. A rack plate 17 is engaged on the rear side of each rotating gear 16. A locking block 18 is fixedly installed on the opposite side of each rack plate 17. The locking blocks 18 are slidably connected to the adjacent openings 10. Slots 7 are formed on both sides of the insert block 6, and the opposite sides of the locking blocks 18 are movably inserted into the inner cavities of the adjacent slots 7.

[0023] Specifically, when separating the rocker wheel 4 from the valve stem 3, the two vertical rods 14 can be rotated with the help of the disassembly assembly, and two worm gears 12 can be meshed on the front and rear sides of the worm 11 respectively. This allows the two vertical rods 14 to rotate in opposite directions, thereby causing the rotating gear 16 fixed on the vertical rod 14 to rotate. This, in turn, causes the rack plate 17 that meshes with it to rotate, thereby moving the locking block 18 away from the inner cavity of the adjacent locking slot 7. This facilitates the separation of the valve stem 3 from the rocker wheel 4 and improves the efficiency of replacing the rocker wheel 4.

[0024] Rectangular blocks 15 are rotatably connected to the outer periphery of the vertical rod 14 near the middle position, and the rectangular blocks 15 are fixedly connected to the inner cavity of the adjacent vertical groove 9 respectively.

[0025] Specifically, the vertical rod 14 can be supported by setting the rectangular block 15. Example

[0026] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 2 and Figure 4 The limiting assembly includes a limiting disc 19 fixedly sleeved on the outer periphery of the valve stem 3 near the bottom end and several limiting holes opened on the limiting disc 19. A mounting plate 21 is fixedly installed on the top of the valve cover 2 near one side, and a threaded tube 22 is movably inserted through one side of the mounting plate 21. A drive wheel 23 is fixedly sleeved on the outer periphery of the threaded tube 22 near one end. A threaded rod 24 is threadedly connected to the inner cavity of the threaded tube 22. A T-shaped limiting rod 20 is fixedly installed at the end of the threaded rod 24. The other end of the T-shaped limiting rod 20 is inserted into the inner cavity of the adjacent limiting hole. Several limiting holes are arranged in a ring array with the top of the limiting disc 19 as the center.

[0027] Specifically, when the valve stem 3 is limited, with the cooperation of the limiting components, the end of the T-shaped limiting rod 20 can be inserted into the inner cavity of the adjacent limiting hole under the limitation of the two limiting telescopic rods 25, thereby limiting the limiting plate 19 and preventing the valve stem 3 from being rotated accidentally, which would affect the valve's operating status.

[0028] Limiting telescopic rods 25 are fixedly installed on one side of the T-shaped limiting rod 20 near the top and bottom, and one end of each limiting telescopic rod 25 is fixedly connected to the mounting plate 21.

[0029] Specifically, the telescopic limit rod 25 can limit the movement of the T-shaped limit rod 20.

[0030] Working Principle: When the valve body 1 is closed, the operator can rotate the threaded tube 22 via the drive wheel 23. The threaded rod 24, threaded into the inner cavity of the threaded tube 22, allows the T-shaped limiting rod 20 to move to the other side under the limitation of the two limiting telescopic rods 25. This allows the T-shaped limiting rod 20 to insert into the inner cavity of the limiting hole on the adjacent limiting disc 19, preventing the valve stem 3 from being accidentally rotated and affecting the valve's operating state. When it is necessary to separate the valve stem 3 from the rocker wheel 4, the operator can then... Rotating the hexagonal nut 13 with the tool causes the worm 11 fixed on the hexagonal nut 13 to rotate, which in turn causes the two worm wheels 12 meshing with the worm 11 to rotate. The two worm wheels 12 are respectively meshed on the front and rear sides of the worm 11, and their rotation directions are opposite. This causes the rotating gear 16 fixed on the vertical rod 14 to rotate, which in turn causes the rack plate 17 meshing with it to rotate. This causes the locking block 18 to move away from the inner cavity of the adjacent locking groove 7, making it easier to separate the valve stem 3 from the rocker wheel 4 and improving the replacement efficiency of the rocker wheel 4.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plunger stop valve, comprising a valve body (1), a valve cover (2), a valve stem (3), and a rocker wheel (4) fixed to the top of the valve stem (3), characterized in that: The bottom of the rocker wheel (4) is fixedly installed with a plug (6), the top of the valve stem (3) is provided with a slot (5), and the bottom of the plug (6) is movably inserted into the inner cavity of the slot (5). A disassembly assembly is provided between the rocker wheel (4) and the valve stem (3). A limit assembly is provided on the top of the valve cover (2) near one side. The disassembly assembly includes a cavity (8) opened on the valve stem (3) and a vertical groove (9) opened on the bottom of the cavity (8) near both sides. An opening (10) is opened on the opposite side of the inner cavity of the slot (5). A worm gear (11) is rotatably connected to the other side of the inner cavity of the cavity (8). One end of the worm gear (11) moves through the cavity ( ). 8) is fixedly installed on one side of the inner cavity with a hexagonal nut (13). The front and rear sides of the worm (11) are meshed with worm wheels (12). The top center of the worm wheel (12) is fixedly installed with a vertical rod (14). The top of the vertical rod (14) is fixedly installed with a rotating gear (16). The rear side of the rotating gear (16) is meshed with a rack plate (17). The opposite side of the rack plate (17) is fixedly installed with a locking block (18). The locking block (18) is slidably connected to the adjacent opening (10). The two sides of the insert (6) are provided with a slot (7). The opposite side of the locking block (18) is movably inserted into the inner cavity of the adjacent slot (7).

2. The plunger shut-off valve according to claim 1, characterized in that: The outer periphery of each vertical rod (14) is rotatably connected to a rectangular block (15) near the middle position, and the rectangular block (15) is fixedly connected to the inner cavity of the adjacent vertical groove (9).

3. A plunger shut-off valve according to claim 1, characterized in that: The limiting assembly includes a limiting plate (19) fixedly sleeved on the outer periphery of the valve stem (3) near the bottom end and several limiting holes opened on the limiting plate (19). A mounting plate (21) is fixedly installed on the top of the valve cover (2) near one side, and a threaded tube (22) is movably passed through one side of the mounting plate (21). A drive wheel (23) is fixedly sleeved on the outer periphery of the threaded tube (22) near one end. A threaded rod (24) is threadedly connected to the inner cavity of the threaded tube (22). A T-shaped limiting rod (20) is fixedly installed at the end of the threaded rod (24), and the other end of the T-shaped limiting rod (20) is inserted into the inner cavity of the adjacent limiting hole.

4. A plunger shut-off valve according to claim 3, characterized in that: Several of the limiting holes are arranged in a ring array with the top of the limiting disk (19) as the center.

5. A plunger shut-off valve according to claim 3, characterized in that: One side of the T-shaped limiting rod (20) is fixedly installed with a limiting telescopic rod (25) near the top and bottom, and one end of the limiting telescopic rod (25) is fixedly connected to the mounting plate (21).

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