U-shaped metal seal butterfly valve

Abstract

The utility model relates to a U type metal seal butterfly valve, include: valve body and valve rod, the outside edge of valve rod is movably sleeved with rocking wheel, and the front side of rocking wheel is close to outside edge place and is fixedly connected with connecting column, and the front side of connecting column is movably connected with holding lever, and the outside edge of holding lever is sleeved with threaded tube, and the top and bottom of holding lever are each equipped with clamping plate, and the side away from holding lever of clamping plate is fixedly connected with compression spring, and the end away from clamping plate of compression spring is fixedly connected with fixed plate, and the inner chamber of compression spring is movably penetrated and is equipped with connecting rod, and the side away from compression spring of fixed plate is equipped with movable plate, and the side close to fixed plate of movable plate is fixedly connected with plug rod, and the top and bottom of valve rod are all set up with limiting hole, and plug rod and limiting hole are mutually matched. The utility model has the advantages of: through turning over holding lever, can spread holding lever, can also fix rocking wheel, and operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically to a U-shaped metal-sealed butterfly valve. Background Technology

[0002] Hard-seal butterfly valves primarily function as shut-off and throttling devices in pipelines. The valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body, thereby achieving opening, closing, or regulation. Hard-seal butterfly valves feature an eccentric metal-sealed structure, with sealing methods including metal-to-metal sealing, stainless steel and graphite composite plate sealing rings to metal sealing, or other multi-layered superimposed seals.

[0003] In the prior art, Chinese Patent Publication No. CN217153026U discloses a novel bidirectional all-metal U-shaped sealing butterfly valve, including a valve body, a rotating shaft, a valve plate, and a sealing device. The valve body, rotating shaft, and valve plate have a triple eccentric structure. The sealing device includes a lower valve seat sealing gasket, a metal valve seat, an upper valve seat sealing gasket, and a clamping member stacked sequentially. The axial cross-section of the metal valve seat is a U-shape including a long arm and a short arm. A clamping platform for mounting the sealing device is provided on the valve body protruding towards the center. The lower valve seat sealing gasket and the upper valve seat sealing gasket are respectively pressed against both sides of the long arm of the metal valve seat. The clamping member is fixed inside the valve body and presses against the upper valve seat sealing gasket on one side. The inner curved position of the U-shape of the metal valve seat has a gap with the clamping member to form an elastic deformation space. The sealing structure is a novel sealing structure with a U-shaped metal valve seat, upper and lower gaskets, and clamping member cooperating. The U-shape of the metal valve seat has a certain elasticity and can elastically seal with the valve plate, thereby giving the butterfly valve a small closing torque and good bidirectional sealing performance. However, this butterfly valve is opened and closed via a handwheel during use. Most butterfly valves are now installed outdoors and are often unattended, leading to frequent handwheel thefts and significant inconvenience to production. To address this issue, handwheels are typically designed to be detachable, allowing them to be removed after valve operation to prevent theft. However, most detachable handwheels are fixed to the valve stem with nuts, requiring the nuts to be unscrewed before removal. This cumbersome process of fixing the handwheel to the valve stem with the nuts before operation is extremely inconvenient and significantly reduces work efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application proposes a U-shaped metal-sealed butterfly valve. By flipping the handle, the handle can be unfolded and the rocker wheel can be fixed, making operation more convenient.

[0005] This utility model provides the following technical solution: a U-shaped metal-sealed butterfly valve, comprising: a valve body and a valve stem; a rocker wheel is movably fitted on the outer edge of the valve stem; a connecting column is fixedly connected to the front side of the rocker wheel near the outer edge; a handle is movably connected to the front side of the connecting column; a threaded tube is fitted on the outer edge of the handle; clamps are provided at the top and bottom of the handle; a compression spring is fixedly connected to the side of the clamps away from the handle; a fixed plate is fixedly connected to the end of the compression spring away from the clamps; a connecting rod is movably inserted through the inner cavity of the compression spring; a movable plate is provided on the side of the fixed plate away from the compression spring; a insertion rod is fixedly connected to the side of the movable plate near the fixed plate; limit holes are provided at the top and bottom of the valve stem, and the insertion rod matches the limit holes.

[0006] As a preferred embodiment of this utility model, flanges are fixedly fitted on both sides of the outer edge of the valve body, a valve plate is movably inserted into the inner side of the valve body, and the valve stem is inserted into the front side of the valve body.

[0007] As a preferred embodiment of this utility model, a first connecting plate is fixedly connected to the left end of the grip, and a second connecting plate is provided at the top and bottom of the first connecting plate. The second connecting plate is fixedly connected to the front end of the connecting post, and a pin is rotatably connected to the first connecting plate. The two ends of the pin are fixedly passed through the adjacent second connecting plates.

[0008] As a preferred embodiment of this utility model, the threaded tube is threadedly connected to the handle and the connecting column respectively. The outer edges of the handle and the connecting column are provided with external threads, and the external threads are matched with the threaded tube.

[0009] As a preferred embodiment of this utility model, a guide plate is fixedly connected to the front side of the clamp plate. Both the clamp plate and the guide plate have arc-shaped cross-sections. The arc-shaped opening of the clamp plate faces the grip bar side, and the arc-shaped opening of the guide plate faces the side away from the grip bar.

[0010] As a preferred embodiment of this utility model, one end of the connecting rod is fixedly connected to the clamping plate, the other end of the connecting rod movably passes through the fixing plate, the fixing plate is fixedly connected to the front side of the rocker wheel, and the end of the connecting rod away from the clamping plate is fixedly connected to the movable plate.

[0011] As a preferred embodiment of this utility model, a limiting groove is provided on the right side of the inner cavity of the rocker wheel, and a limiting strip is movably provided through the inner cavity of the limiting groove. The limiting strip is fixedly connected to the outer wall of the valve stem, and a limiting plate is fixedly connected to the rear side of the limiting strip. The front side of the limiting plate is in contact with the rear side of the rocker wheel.

[0012] The beneficial effects of this utility model are:

[0013] 1. In this utility model, when installing the rocker wheel, first put the rocker wheel on the outside of the valve stem, then flip the handle to unfold it. Flip the handle away from the clamping plate, and the insertion rod will move under the elastic action of the compression spring. Insert the rod into the inner cavity of the adjacent limiting hole to fix the rocker wheel. That is, by flipping the handle, the device can unfold the handle and fix the rocker wheel, making the operation more convenient.

[0014] 2. In this utility model, the device flips the handle and flips it between the two clamps, which can not only complete the folding and storage of the handle, but also untie the rocker wheel for easy disassembly. By folding and storing the handle, the overall volume of the rocker wheel is greatly reduced, the area occupied is small, and it is convenient to move the rocker wheel.

[0015] 3. In this utility model, the setting of the limiting strip, limiting groove and limiting plate makes it possible for the rocker wheel to enter the accurate position more quickly during installation, which facilitates the installation of the rocker wheel. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the present invention;

[0017] Figure 2 This is a front perspective view of the rocker wheel component of this utility model;

[0018] Figure 3 This is a right perspective view of the rocker wheel, a component of this utility model.

[0019] Figure 4 This is a right perspective view of the limiting groove of the component of this utility model;

[0020] Figure 5 This is a front perspective view of the grip bar of this utility model;

[0021] Figure 6 This is a right perspective view of the clamping plate of this utility model.

[0022] Figure 7 This is a right perspective view of the limiting strip of the component of this utility model;

[0023] In the diagram: 1. Valve body; 2. Flange; 3. Valve plate; 4. Valve stem; 5. Rocker wheel; 6. Limiting strip; 7. Limiting plate; 8. Limiting groove; 9. Connecting column; 10. Handle rod; 11. Threaded pipe; 12. First connecting plate; 13. Second connecting plate; 14. Pin; 15. Clamping plate; 16. Guide plate; 17. Compression spring; 18. Fixed plate; 19. Movable plate; 20. Connecting rod; 21. Insert rod; 22. Limiting hole. Detailed Implementation

[0024] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1

[0026] like Figures 1 to 6 As shown, a U-shaped metal-sealed butterfly valve includes: a valve body 1 and a valve stem 4. Flanges 2 are fixedly fitted on both sides of the outer edge of the valve body 1. A valve plate 3 is movably inserted into the inner side of the valve body 1. The valve stem 4 is inserted into the front side of the valve body 1. A rocker wheel 5 is movably fitted on the outer edge of the valve stem 4. A connecting post 9 is fixedly connected to the front side of the rocker wheel 5 near the outer edge. A handle 10 is movably connected to the front side of the connecting post 9. A first connecting plate 12 is fixedly connected to the left end of the handle 10. A second connecting plate 13 is provided at the top and bottom of the first connecting plate 12. The second connecting plate 13 is fixedly connected to the front end of the connecting post 9. A pin 14 is rotatably connected to the first connecting plate 12. The two ends of the pin 14 are fixedly inserted through the adjacent second connecting plates 13. A threaded tube 11 is fitted on the outer edge of the handle 10. The threaded tube 11 is threadedly connected to the handle 10 and the connecting post 9 respectively. External threads are provided on the outer edges of the handle 10 and the connecting post 9. The external threads match the threaded tube 11.

[0027] In this embodiment, clamping plates 15 are provided at both the top and bottom of the grip 10. A guide plate 16 is fixedly connected to the front side of the clamping plate 15. The cross-sections of both the clamping plate 15 and the guide plate 16 are arc-shaped. The arc-shaped opening of the clamping plate 15 faces the grip 10, and the arc-shaped opening of the guide plate 16 faces the side away from the grip 10. A compression spring 17 is fixedly connected to the side of the clamping plate 15 away from the grip 10. A fixing plate 18 is fixedly connected to the end of the compression spring 17 away from the clamping plate 15. The inner cavity of the compression spring 17 is movably connected through the clamping plate 18. There is a connecting rod 20. A movable plate 19 is provided on the side of the fixed plate 18 away from the compression spring 17. One end of the connecting rod 20 is fixedly connected to the clamping plate 15, and the other end of the connecting rod 20 movably passes through the fixed plate 18. The fixed plate 18 is fixedly connected to the front side of the rocker wheel 5. The end of the connecting rod 20 away from the clamping plate 15 is fixedly connected to the movable plate 19. A plug rod 21 is fixedly connected on the side of the movable plate 19 close to the fixed plate 18. Limiting holes 22 are opened at the top and bottom of the valve stem 4. The plug rod 21 matches the limiting hole 22.

[0028] After the rocker wheel 5 moves backward and comes into contact with the front side of the limiting plate 7, the insertion rod 21 corresponds to the limiting hole 22. Then, the grip rod 10 is flipped forward. The grip rod 10 flips forward with the pin 14 as the center. The grip rod 10 flips away from the clamping plate 15. The two clamping plates 15 move under the elastic action of the compression spring 17. The two clamping plates 15 move and move closer to each other. The clamping plates 15 drive the movable plate 19 to move through the connecting rod 20. The movable plate 19 drives the insertion rod 21 to move. The insertion rod 21 moves into the inner cavity of the adjacent limiting hole 22, thereby fixing the rocker wheel 5.

[0029] The handle 10 is flipped forward until it is perpendicular to the front of the connecting post 9. Then the threaded tube 11 is rotated, and the threaded tube 11 moves towards the connecting post 9 under the action of the thread. The threaded tube 11 moves until it is sleeved on the outside of the connecting post 9 and the handle 10, thus completing the installation of the handle 10. Then the butterfly valve is opened and closed by rotating the rocker wheel 5 and the valve stem 4 through the handle 10.

[0030] Example 2

[0031] like Figure 7 As shown, a limiting groove 8 is provided on the right side of the inner cavity of the rocker wheel 5. A limiting strip 6 is movably provided through the inner cavity of the limiting groove 8. The limiting strip 6 is fixedly connected to the outer wall of the valve stem 4. A limiting plate 7 is fixedly connected to the rear side of the limiting strip 6. The front side of the limiting plate 7 is in contact with the rear side of the rocker wheel 5.

[0032] When installing the rocker wheel 5, first move the rocker wheel 5 to the front of the valve stem 4, so that the limiting groove 8 corresponds to the limiting strip 6. Then move the rocker wheel 5 to the rear, so that the rocker wheel 5 is sleeved on the outside of the valve stem 4. At this time, the limiting strip 6 is inserted into the inner cavity of the limiting groove 8. Move the rocker wheel 5 to the rear until it is in contact with the front of the limiting plate 7. At this time, stop moving the rocker wheel 5. Through the setting of the limiting strip 6, the limiting groove 8 and the limiting plate 7, the rocker wheel 5 can enter the accurate position more quickly during installation, which facilitates the installation of the rocker wheel 5.

[0033] Implementation plan: When installing the rocker wheel 5, first move the rocker wheel 5 to the front of the valve stem 4, so that the limiting groove 8 corresponds to the limiting strip 6. Then move the rocker wheel 5 to the rear, so that the rocker wheel 5 is sleeved on the outside of the valve stem 4. At this time, the limiting strip 6 is inserted into the inner cavity of the limiting groove 8. Move the rocker wheel 5 to the rear until it is in contact with the front of the limiting plate 7. At this time, stop moving the rocker wheel 5. Through the setting of the limiting strip 6, the limiting groove 8 and the limiting plate 7, the rocker wheel 5 can enter the accurate position more quickly during installation, which facilitates the installation of the rocker wheel 5.

[0034] After the rocker wheel 5 moves backward and comes into contact with the front side of the limiting plate 7, the insertion rod 21 corresponds to the limiting hole 22. Then, the grip rod 10 is flipped forward. The grip rod 10 flips forward with the pin 14 as the center. The grip rod 10 flips away from the clamping plate 15. The two clamping plates 15 move under the elastic action of the compression spring 17. The two clamping plates 15 move and move closer to each other. The clamping plates 15 drive the movable plate 19 to move through the connecting rod 20. The movable plate 19 drives the insertion rod 21 to move. The insertion rod 21 moves into the inner cavity of the adjacent limiting hole 22, thereby fixing the rocker wheel 5.

[0035] The handle 10 is flipped forward until it is perpendicular to the front of the connecting post 9. Then the threaded tube 11 is rotated, and the threaded tube 11 moves towards the connecting post 9 under the action of the thread. The threaded tube 11 moves until it is sleeved on the outside of the connecting post 9 and the handle 10, thus completing the installation of the handle 10. Then the butterfly valve is opened and closed by rotating the rocker wheel 5 and the valve stem 4 through the handle 10.

[0036] When installing the rocker wheel 5, first place the rocker wheel 5 on the outside of the valve stem 4, then flip the handle 10 to unfold it. Flip the handle 10 away from the clamp 15, and the insertion rod 21 will move under the elastic action of the compression spring 17. The insertion rod 21 will be inserted into the inner cavity of the adjacent limiting hole 22, thereby fixing the rocker wheel 5. That is, by flipping the handle 10, the device can both unfold the handle 10 and fix the rocker wheel 5, making the operation more convenient.

[0037] When disassembling the rocker wheel 5, rotate the threaded tube 11. The threaded tube 11 moves away from the connecting post 9 under the action of the thread, thereby releasing the fixing between the connecting post 9 and the handle 10. Then, flip the handle 10. The handle 10 flips around the pin 14 and flips between the two guide plates 16. Then push the handle 10. The handle 10 moves between the two clamping plates 15 under the action of the guide plates 16. The two clamping plates 15 move in opposite directions. The clamping plates 15 drive the movable plate 19 through the connecting rod 20. The insertion rod 21 moves away from the limiting hole 22, thereby releasing the fixing of the rocker wheel 5. The clamping plate 15 is clamped on the outside of the grip rod 10 under the action of the compression spring 17. That is, the device flips the grip rod 10 and flips it between the two clamping plates 15. This can not only complete the folding and storage operation of the grip rod 10, but also release the fixing of the rocker wheel 5 for easy disassembly. By folding and storing the grip rod 10, the overall volume of the rocker wheel 5 is greatly reduced, the area occupied is small, and it is convenient to move the rocker wheel 5.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A U-shaped metal-sealed butterfly valve, characterized in that, include: The valve body and valve stem have a rocker wheel movably fitted on the outer edge of the valve stem. A connecting post is fixedly connected to the front side of the rocker wheel near the outer edge. A handle is movably connected to the front side of the connecting post. A threaded tube is fitted on the outer edge of the handle. Both the top and bottom of the handle are equipped with clamping plates. A compression spring is fixedly connected to the side of the clamping plate away from the handle. A fixing plate is fixedly connected to the end of the compression spring away from the clamping plate. A connecting rod movably passes through the inner cavity of the compression spring. A movable plate is provided on the side of the fixing plate away from the compression spring. A insertion rod is fixedly connected to the side of the movable plate near the fixing plate. Limiting holes are provided at the top and bottom of the valve stem, and the insertion rod matches the limiting holes.

2. The U-shaped metal-sealed butterfly valve according to claim 1, characterized in that, Flanges are fixedly fitted on both sides of the outer edge of the valve body, and a valve plate is movably inserted into the inner side of the valve body. The valve stem is inserted into the front side of the valve body.

3. A U-shaped metal-sealed butterfly valve according to claim 1, characterized in that, A first connecting plate is fixedly connected to the left end of the grip. A second connecting plate is provided at the top and bottom of the first connecting plate. The second connecting plate is fixedly connected to the front end of the connecting post. A pin is rotatably connected to the first connecting plate, and the two ends of the pin are fixedly passed through the adjacent second connecting plates.

4. A U-shaped metal-sealed butterfly valve according to claim 1, characterized in that, The threaded tube is threaded to the handle and the connecting post respectively. The outer edges of the handle and the connecting post are provided with external threads, which are matched with the threaded tube.

5. A U-shaped metal-sealed butterfly valve according to claim 1, characterized in that, A guide plate is fixedly connected to the front side of the clamp. Both the clamp and the guide plate have arc-shaped cross-sections. The arc-shaped opening of the clamp faces the grip bar side, and the arc-shaped opening of the guide plate faces the side away from the grip bar.

6. A U-shaped metal-sealed butterfly valve according to claim 1, characterized in that, One end of the connecting rod is fixedly connected to the clamping plate, and the other end of the connecting rod movably passes through the fixed plate. The fixed plate is fixedly connected to the front side of the rocker wheel, and the end of the connecting rod away from the clamping plate is fixedly connected to the movable plate.

7. A U-shaped metal-sealed butterfly valve according to claim 1, characterized in that, A limiting groove is provided on the right side of the inner cavity of the rocker wheel. A limiting strip is movably inserted through the inner cavity of the limiting groove. The limiting strip is fixedly connected to the outer wall of the valve stem. A limiting plate is fixedly connected to the rear side of the limiting strip. The front side of the limiting plate is in contact with the rear side of the rocker wheel.

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