A butterfly valve structure with detachable valve seat ring

Abstract

The utility model discloses a butterfly valve structure that valve seat ring can be detached belongs to butterfly valve technical field. Including first pipe piece and second pipe piece, be provided with valve seat ring between first pipe piece and second pipe piece, two fixed blocks are fixedly connected on first pipe piece, two positioning blocks are fixedly connected on second pipe piece, be provided with valve plate in valve seat ring, the fixed connection of sliding block is established on first pipe piece, the rotating groove is passed in and is established on sliding block, the sliding connection of connecting rod has been established in rotating groove, and the both ends of connecting rod all are established in the connecting groove, and the fixed hole is passed in and is established on valve seat ring, and the movable slot is established on valve plate, the utility model discloses through the separation between first pipe piece and second pipe piece, and then can make valve seat ring separate first pipe piece and second pipe piece between, complete the disassembly to valve seat ring, and the installation of bare hands can be convenient for disassembling, is more laborsaving, improves the maintenance efficiency of butterfly valve.

Description

Technical Field

[0001] This utility model relates to a butterfly valve structure with a detachable valve seat ring, belonging to the field of butterfly valve technology. Background Technology

[0002] Butterfly valves are a common fluid control device, widely used in industrial pipeline systems and also widely applied in industrial waste gas treatment.

[0003] When existing butterfly valves need to be replaced due to medium corrosion or wear after a long period of use, the valve seat rings of most existing butterfly valves adopt a fixed structure, making it impossible to disassemble and replace them. Although some butterfly valves with detachable valve seat rings can be separated through flange connections, special tools (such as hydraulic wrenches) are usually required to tighten and loosen the bolts, which is inefficient and increases the difficulty of maintenance.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a butterfly valve structure with a detachable valve seat ring. This solves the problem that in the prior art, when the valve seat ring of existing butterfly valves needs to be replaced due to medium corrosion or wear after a long period of time, the valve seat ring of existing butterfly valves is mostly fixed and cannot be disassembled and replaced. Although some butterfly valves with detachable valve seat rings can be separated through flange connection, special tools (such as hydraulic wrenches) are usually required to complete the bolt tightening and disassembly, which has low operation efficiency and increases the difficulty of maintenance.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: a butterfly valve structure with a detachable valve seat ring, including a first tube and a second tube, a valve seat ring is provided between the first tube and the second tube, two fixing blocks are fixedly connected to the first tube, two positioning blocks are fixedly connected to the second tube, a valve plate is provided inside the valve seat ring, a sliding block is fixedly connected to the first tube, a rotating groove is provided through the sliding block, a connecting rod is slidably connected in the rotating groove, both ends of the connecting rod are provided with connecting grooves, a fixing hole is provided through the valve seat ring, a movable groove is provided in the valve plate, one end of the connecting rod is inserted into the movable groove through the fixing hole, a support block is provided on the sliding block, a sliding groove is provided on the side of the support block near the first tube, the sliding groove is slidably connected to the sliding block, a rotating sleeve is threadedly connected to the support block, a rotating mechanism is provided on the support block, the rotating mechanism can drive the connecting rod to rotate, and an installation mechanism is provided on the fixing block and the positioning block to fix the positioning block and the fixing block. The rotating mechanism includes a mounting cavity within a support block. A worm gear rotatably connects to the support block, passing through the mounting cavity. A support shaft is rotatably connected within the support block, and a worm wheel, meshing with the worm gear, is fixedly connected to the support shaft. The end of the support shaft near the sliding block passes through a sliding groove and inserts into a connecting groove. A disassembly / assembly mechanism is provided on the support block, facilitating the disassembly and assembly of the support block and the sliding block. The disassembly / assembly mechanism includes multiple through slots formed in the support block, each containing a limit groove. A fixed rod is slidably connected within each slot. Multiple pushing grooves are formed on the inner wall of the rotating sleeve. The end of the fixed rod away from the support shaft inserts into a pushing groove. A fixed plate, slidably connected to the limit groove, is fixedly connected to the fixed rod. A support spring is fixedly connected between the side of the fixed plate near the support shaft and the inner wall of the limit groove. Multiple mounting holes are formed on the sliding block, allowing the end of the fixed rod near the support shaft to be inserted into one of the mounting holes.

[0007] By adopting the above technical solution, in the initial state, when the sliding block and support block need to be installed, the sliding block is inserted into the sliding groove, so that the upper surface of the sliding block abuts against the top wall of the sliding groove. At this time, the lower end of the support shaft is inserted into the connecting groove at the upper end of the connecting rod. Then, the rotating sleeve block is rotated. During the rotation of the rotating sleeve block, the inner wall of the pushing groove away from the support shaft will abut against the end of the fixed rod that penetrates into the pushing groove. The rotating sleeve block pushes the fixed rod through the pushing groove, and the fixed rod slides towards the support shaft, causing its other end to slide into the mounting hole. During this process, the fixed plate is driven to compress the support spring, causing the support spring to deform. The end of the fixed rod is inserted into the mounting hole to fix the sliding block and the support block, so that the sliding block and the support block cannot be separated. Thus, the support block is installed on the sliding block. The installation is convenient, quick and flexible, and can be done by hand, which is more labor-saving and convenient.

[0008] During disassembly, the rotating sleeve is rotated in the opposite direction. The rotating sleeve synchronously drives the push groove to rotate axially. Under the action of the release force of the support spring, the fixing plate and fixing rod are reset, so that the end of the fixing rod slides out of the mounting hole, thereby releasing the installation and fixing between the sliding block and the support block. This allows the support block to be quickly removed from the sliding block, thus facilitating efficient maintenance of the butterfly valve structure.

[0009] In use, rotating the worm gear drives the worm wheel meshing with it to rotate, which in turn drives the support shaft to rotate axially. Because the lower end of the support shaft is inserted into the connecting groove at the upper end of the connecting rod, and the lower end of the connecting rod is inserted into the movable groove, the rotation of the support shaft drives the connecting rod to rotate synchronously. The rotation of the connecting rod drives the valve plate to rotate synchronously. The rotation of the valve plate within the valve seat ring can control the flow and flow rate of the fluid.

[0010] After the support block and sliding block are disassembled, the connecting rod is pulled out from the rotating groove. At this time, the end of the connecting rod is also disengaged from the movable groove on the valve plate, so that the valve plate can slide from the valve seat ring, thereby completing the disassembly of the valve plate. Disassembly is convenient and does not require the use of other tools, which facilitates the replacement and maintenance of the valve plate.

[0011] This utility model is further configured as follows: a stabilizing block is fixedly connected to the sliding block, and a stabilizing groove is formed on the inner wall of the sliding groove, with the stabilizing groove and the stabilizing block slidably connected. The mounting mechanism includes a mounting groove extending through the fixed block, a connecting block fixedly connected to the positioning block that can be inserted into the mounting groove, a sliding groove on one side of the connecting block, the inner wall of the sliding groove away from the positioning block being inclined, a vertical block fixedly connected to the fixed block, a fixing groove on the vertical block, a support rod rotatably connected to the vertical block that extends into the fixing groove, a sliding column fixedly connected to the support rod, and a rotating block fixedly connected to the end of the support rod away from the fixed block. A bottom groove is formed on the side of the rotating block near the vertical block, a positioning rod extending through the bottom groove is slidably connected to the rotating block, two positioning holes are formed on the vertical block, the end of the positioning rod near the vertical block can be inserted into the positioning holes, a limiting block fixedly connected to the positioning rod and slidably connected to the bottom groove, a positioning spring fixedly connected between the side of the limiting block away from the vertical block and the inner wall of the bottom groove, and a mounting ball fixedly connected to the end of the positioning rod away from the vertical block.

[0012] By adopting the above technical solution, a rubber sealing gasket is provided between the first and second tube segments. During use, when the first and second tube segments need to be installed and fixed, the connecting block is passed through the installation groove, and then the installation ball is pulled out. This causes the installation ball to move the positioning rod and the limiting block upwards, moving the positioning rod upwards out of the positioning hole. At this time, the positioning spring is compressed and deformed. The rotating block can then be rotated, synchronously causing the sliding column to rotate, making the sliding column abut against the inclined surface of the sliding groove and pushing the inclined surface of the sliding groove upwards. During this process, the fixing block and the positioning block are brought into close contact, which in turn synchronously brings the first and second tube segments into close contact, thus fixing the valve seat ring between the first and second tube segments. When the sliding column is rotated to a suitable angle (in this solution, the positioning rod needs to be rotated 90 degrees), the first and second tube segments are completely sealed. At this time, the installation ball is released, and under the release force of the positioning spring, the positioning rod slides into another positioning hole, fixing the current position of the support rod, thus completing the fixing of the sliding column and thus installing and fixing the first and second tube segments.

[0013] Similarly, during disassembly, pulling out the installation ball causes the positioning rod to slide out of the positioning hole, rotating the rotating block causes the sliding column to slide out of the sliding groove, and then pulling out the connecting block from the installation groove completes the separation between the first and second tube segments. This allows the valve seat ring to be separated from the first and second tube segments, thus completing the disassembly of the valve seat ring. Disassembly is convenient and can be installed by hand, saving effort and improving the maintenance efficiency of the butterfly valve.

[0014] The beneficial effects of this utility model are as follows: When using this utility model, if it is necessary to install and fix the first and second tube segments, the connecting block is passed through the installation groove, and then the installation ball is pulled out, causing the installation ball to drive the positioning rod and the limiting block to move upward, thus moving the positioning rod upward out of the positioning hole. At this time, the positioning spring is compressed and deformed. At this time, the rotating block can be rotated, and the rotating block synchronously drives the sliding column to rotate, so that the sliding column abuts against the inclined surface of the sliding groove and pushes the inclined surface of the sliding groove to the upper end. During this process, the fixing block and the positioning block are driven to stick together, and then the first and second tube segments are driven to stick together, so that the valve seat ring is fixed between the first and second tube segments. When the sliding column is rotated to a suitable angle, the positioning rod needs to be rotated 90 degrees in this solution, and the first and second tube segments are completely tightly sealed. At this time, the installation ball is released, and under the action of the release force of the positioning spring, the positioning rod is driven to slide into another positioning hole, fixing the current position of the support rod, thus completing the fixing of the sliding column, and thus installing and fixing the first and second tube segments.

[0015] Similarly, during disassembly, pulling out the installation ball causes the positioning rod to slide out of the positioning hole, rotating the rotating block causes the sliding column to slide out of the sliding groove, and then pulling out the connecting block from the installation groove completes the separation between the first and second tube segments. This allows the valve seat ring to be separated from the first and second tube segments, thus completing the disassembly of the valve seat ring. Disassembly is convenient and can be installed by hand, saving effort and improving the maintenance efficiency of the butterfly 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 second segment structure of this utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the valve seat ring structure of this utility model;

[0020] Figure 5 This is a cross-sectional view of the rotating sleeve block and the support block of this utility model;

[0021] Figure 6 This is a vertical cross-sectional view of the support block of this utility model;

[0022] Figure 7 This is a vertical cross-sectional view of the rotating block of this utility model.

[0023] In the picture:

[0024] 1. First tube segment; 2. Valve seat ring; 3. Valve plate; 4. Positioning block; 5. Fixing block; 6. Second tube segment; 7. Connecting block; 8. Mounting groove; 9. Sliding groove; 10. Sliding block; 11. Connecting groove; 12. Rotating groove; 13. Mounting hole; 14. Stabilizing block; 15. Connecting rod; 16. Fixing hole; 17. Movable groove; 18. Fixing groove; 19. Vertical block; 20. Sliding column; 21. Rotating block; 22. Support block; 23. Mounting cavity; 24. Worm gear; 25. Support shaft; 26. Sliding groove; 27. Stabilizing groove; 28. Rotating sleeve block; 29. ​​Worm; 30. Limiting groove; 31. Fixing rod; 32. Fixing plate; 33. Support spring; 34. Through groove; 35. Bottom groove; 36. Positioning spring; 37. Positioning rod; 38. Limiting block; 39. Positioning hole; 40. Pushing groove; 41. Support rod. Detailed Implementation

[0025] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figure 1-7 As shown, this utility model is further illustrated.

[0026] like Figures 1 to 4 As shown, this utility model is a butterfly valve structure with a detachable valve seat ring, including a first tube 1 and a second tube 6. A valve seat ring 2 is disposed between the first tube 1 and the second tube 6, and the first tube 1 and the second tube 6 are sleeved on the valve seat ring 2. Two fixing blocks 5 are fixedly connected to the first tube 1, and two positioning blocks 4 are fixedly connected to the second tube 6. A valve plate 3 is disposed inside the valve seat ring 2, and a sealing element is disposed on the valve plate 3. A sliding block 10 is fixedly connected to the first tube 1, and a rotating groove 12 is formed through the sliding block 10, penetrating the interior of the first tube 1. A connecting rod 15 is slidably connected inside the rotating groove 12, and connecting grooves 11 are formed at both ends of the connecting rod 15. A connecting groove 11 is formed through the valve seat ring 2. A fixing hole 16 is provided, and a movable groove 17 is provided on the valve plate 3. One end of the connecting rod 15 is inserted into the movable groove 17 through the fixing hole 16. A support block 22 is provided on the sliding block 10. A sliding groove 26 is provided on the side of the support block 22 near the first tube segment 1. The sliding groove 26 is slidably connected to the sliding block 10. The upper surface of the sliding block 10 abuts against the top wall of the sliding groove 26. A rotating sleeve block 28 is threadedly connected to the support block 22. Corresponding threads are provided on the outer wall of the support block 22 and the inner wall of the rotating sleeve block 28. A rotating mechanism is provided on the support block 22. The rotating mechanism can drive the connecting rod 15 to rotate. An installation mechanism is provided on the fixing block 5 and the positioning block 4 to fix the positioning block 4 and the fixing block 5.

[0027] like Figures 4 to 7 As shown, the rotating mechanism includes a mounting cavity 23 formed in the support block 22. A worm gear 29 is rotatably connected to the support block 22, passing through the mounting cavity 23. A support shaft 25 is rotatably connected inside the support block 22. A worm wheel 24, meshing with the worm gear 29, is fixedly connected to the support shaft 25. One end of the support shaft 25 near the sliding block 10 rotatably passes through the sliding groove 26 and inserts into the connecting groove 11. The other end of the support shaft 25 near the sliding block 10 is inserted into the connecting groove 11 at the upper end of the connecting rod 15. The end of the support shaft 25 near the sliding block 10 is adapted to the connecting groove 11. The end of the support shaft 25 away from the sliding block 10 is rotatably connected to the top wall of the mounting cavity 23. A disassembly and assembly mechanism is provided on the support block 22. The disassembly mechanism facilitates the disassembly and assembly between the support block 22 and the sliding block 10.

[0028] like Figures 2 to 6As shown, the disassembly and assembly mechanism includes multiple through slots 34 that pass through the support block 22. The through slots 34 communicate with the sliding slot 26. A limiting slot 30 is provided in the through slot 34. A fixed rod 31 is slidably connected in the through slot 34. Multiple pushing slots 40 are provided on the inner wall of the rotating sleeve block 28. The end of the fixed rod 31 away from the support shaft 25 is inserted into the pushing slot 40. A fixed plate 32 that is slidably connected to the fixed rod 31 is fixedly connected to the fixed plate 31. A support spring 33 is fixedly connected between the side of the fixed plate 32 near the support shaft 25 and the inner wall of the limiting slot 30. The support spring 33 is sleeved on the outside of the fixed rod 31. The extension and contraction path of the support spring 33 is consistent with the sliding path of the fixed plate 32. Multiple mounting holes 13 are provided on the sliding block 10. The end of the fixed rod 31 near the support shaft 25 can be inserted into the mounting hole 13.

[0029] In the initial state, when the sliding block 10 and the support block 22 need to be installed, the sliding block 10 is inserted into the sliding groove 26, so that the upper surface of the sliding block 10 abuts against the top wall of the sliding groove 26. At this time, the lower end of the support shaft 25 is inserted into the connecting groove 11 at the upper end of the connecting rod 15. Then, the rotating sleeve 28 is rotated. During the rotation of the rotating sleeve 28, the inner wall of the pushing groove 40 away from the support shaft 25 will abut against the end of the fixed rod 31 that penetrates into the pushing groove 40. The rotating sleeve 28 pushes the fixed rod 31 through the pushing groove 40. The fixed rod 31 slides towards the support shaft 25 and its other end slides into the mounting hole 13. During this process, the fixed plate 32 is driven to squeeze the support spring 33, causing the support spring 33 to be squeezed and deformed. The end of the fixing rod 31 is inserted into the mounting hole 13 to fix the sliding block 10 and the support block 22, so that the sliding block 10 and the support block 22 cannot be separated, thereby completing the installation of the support block 22 on the sliding block 10. The installation is convenient, quick and flexible, and can be done by hand, which is more labor-saving and convenient.

[0030] During disassembly, the rotating sleeve 28 is rotated in the opposite direction. The rotating sleeve 28 synchronously drives the pushing groove 40 to rotate axially. Under the action of the release force of the support spring 33, the fixing plate 32 and the fixing rod 31 are reset, so that the end of the fixing rod 31 slides out of the mounting hole 13, thereby releasing the installation and fixing between the sliding block 10 and the support block 22. This allows the support block 22 to be quickly removed from the sliding block 10, thus facilitating efficient maintenance of the butterfly valve structure.

[0031] In use, rotating the worm gear 29 can drive the worm wheel 24 meshing with it to rotate, which in turn drives the support shaft 25 to rotate axially. Since the lower end of the support shaft 25 is inserted into the connecting groove 11 at the upper end of the connecting rod 15, and the lower end of the connecting rod 15 is inserted into the movable groove 17, the rotation of the support shaft 25 drives the connecting rod 15 to rotate synchronously. The rotation of the connecting rod 15 drives the valve plate 3 to rotate synchronously. The valve plate 3 rotates within the valve seat ring 2 to control the fluid flow and flow rate.

[0032] After the support block 22 and the sliding block 10 are disassembled and separated, the connecting rod 15 is pulled out from the rotating groove 12. At this time, the end of the connecting rod 15 is also disengaged from the movable groove 17 on the valve plate 3, so that the valve plate 3 can slide from the valve seat ring 2, thereby completing the disassembly of the valve plate 3. The disassembly is convenient and does not require the use of other tools, thus facilitating the replacement and maintenance of the valve plate 3.

[0033] In this design, because the rotating sleeve 28 moves up and down during rotation, the height of the pushing groove 40 is sufficient to allow the rotating sleeve 28 to drive the fixed rod 31 to slide within the pushing groove 40 during rotation.

[0034] like Figures 4 to 6 As shown, a stabilizing block 14 is fixedly connected to the sliding block 10, and a stabilizing groove 27 is provided on the inner wall of the sliding groove 26. The stabilizing groove 27 is slidably connected to the stabilizing block 14.

[0035] like Figure 2 and Figure 7 As shown, the installation mechanism includes an installation groove 8 that runs through the fixed block 5. A connecting block 7 that can be inserted into the installation groove 8 is fixedly connected to the positioning block 4. A sliding groove 9 is provided on one side of the connecting block 7. The inner wall of the sliding groove 9 away from the positioning block 4 is inclined. A vertical block 19 is fixedly connected to the fixed block 5. A fixing groove 18 is provided on the vertical block 19. A support rod 41 that runs through the fixing groove 18 is rotatably connected to the vertical block 19. The end of the support rod 41 near the fixed block 5 is rotatably connected to the inner wall of the fixing groove 18. A sliding column 20 is fixedly connected to the support rod 41. A rotating block 21 is fixedly connected to the end of the support rod 41 away from the fixed block 5.

[0036] like Figure 7As shown, a bottom groove 35 is provided on the side of the rotating block 21 near the vertical block 19. A positioning rod 37 that passes through the bottom groove 35 is slidably connected to the rotating block 21. Two positioning holes 39 are provided on the vertical block 19. The two positioning holes 39 are set at a 90-degree angle with the axis of the support rod 41 as the center. The end of the positioning rod 37 near the vertical block 19 can be inserted into the positioning hole 39. A limiting block 38 that is slidably connected to the bottom groove 35 is fixedly connected to the positioning rod 37. A positioning spring 36 is fixedly connected between the side of the limiting block 38 away from the vertical block 19 and the inner wall of the bottom groove 35. The positioning spring 36 is sleeved on the positioning rod 37. An installation ball is fixedly connected to the end of the positioning rod 37 away from the vertical block 19.

[0037] A rubber sealing gasket is provided between the first tube segment 1 and the second tube segment 6. During use, when it is necessary to install and fix the first tube segment 1 and the second tube segment 6, the connecting block 7 is passed through the mounting groove 8, and then the mounting ball is pulled out. This causes the mounting ball to move the positioning rod 37 and the limiting block 38 upwards, moving the positioning rod 37 upwards out of the positioning hole 39. At this time, the positioning spring 36 is compressed and deformed. The rotating block 21 can then be rotated. The rotating block 21 synchronously drives the sliding column 20 to rotate, causing the sliding column 20 to abut against the inclined surface of the sliding groove 9 and push the inclined surface of the sliding groove 9 upwards. During this process, the fixed... The fixed block 5 and the positioning block 4 are tightly attached, which in turn drives the first tube segment 1 and the second tube segment 6 to be tightly attached, so that the valve seat ring 2 is fixed between the first tube segment 1 and the second tube segment 6. When the sliding column 20 is rotated to a suitable angle, the positioning rod 37 needs to be rotated ninety degrees in this scheme, so that the first tube segment 1 and the second tube segment 6 are completely tightly attached and sealed. At this time, the installation ball is released, and under the action of the release elastic force of the positioning spring 36, the positioning rod 37 is driven to slide into another positioning hole 39 to fix the current position of the support rod 41, thereby completing the fixation of the sliding column 20, and then installing and fixing the first tube segment 1 and the second tube segment 6.

[0038] Similarly, during disassembly, pulling out the installation ball causes the positioning rod 37 to slide out of the positioning hole 39, rotating the rotating block 21 causes the sliding column 20 to slide out of the sliding groove 9, and then pulling out the connecting block 7 from the installation groove 8, thus completing the separation between the first tube 1 and the second tube 6. This allows the valve seat ring 2 to be separated from the first tube 1 and the second tube 6, completing the disassembly of the valve seat ring 2. Disassembly is convenient and can be installed by hand, saving more effort and improving the maintenance efficiency of the butterfly valve.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve structure with a detachable valve seat ring, comprising a first tube segment (1) and a second tube segment (6), characterized in that: A valve seat ring (2) is provided between the first tube segment (1) and the second tube segment (6). Two fixing blocks (5) are fixedly connected to the first tube segment (1), and two positioning blocks (4) are fixedly connected to the second tube segment (6). A valve plate (3) is provided inside the valve seat ring (2). A sliding block (10) is fixedly connected to the first tube segment (1). A rotating groove (12) is provided through the sliding block (10). A connecting rod (15) is slidably connected inside the rotating groove (12). A connecting groove (11) is provided at both ends of the connecting rod (15). A fixing hole (16) is provided through the valve seat ring (2), and a movable hole (16) is provided on the valve plate (3). The movable groove (17) is connected to the connecting rod (15) through the fixing hole (16). The sliding block (10) is provided with a support block (22). The support block (22) is provided with a sliding groove (26) on the side near the first tube segment (1). The sliding groove (26) is slidably connected to the sliding block (10). The support block (22) is threadedly connected with a rotating sleeve block (28). The support block (22) is provided with a rotating mechanism. The rotating mechanism can drive the connecting rod (15) to rotate. The fixing block (5) and the positioning block (4) are provided with an installation mechanism that can fix the positioning block (4) and the fixing block (5).

2. The butterfly valve structure with a detachable valve seat ring according to claim 1, characterized in that: The rotating mechanism includes an installation cavity (23) opened in the support block (22), a worm (29) rotatably connected to the support block (22) through the installation cavity (23), a support shaft (25) rotatably connected in the support block (22), a worm wheel (24) fixedly connected to the support shaft (25) and meshing with the worm (29), one end of the support shaft (25) near the sliding block (10) passes through the sliding groove (26) and is inserted into the connecting groove (11), and a disassembly and assembly mechanism is provided on the support block (22), which facilitates the disassembly and assembly between the support block (22) and the sliding block (10).

3. The butterfly valve structure with a detachable valve seat ring according to claim 2, characterized in that: The disassembly and assembly mechanism includes multiple through slots (34) that are opened through the support block (22). A limit slot (30) is opened in the through slot (34). A fixed rod (31) is slidably connected in the through slot (34). Multiple push slots (40) are opened in the inner wall of the rotating sleeve block (28). The end of the fixed rod (31) away from the support shaft (25) is inserted into the push slot (40). A fixed plate (32) that is slidably connected to the fixed rod (31) and the limit slot (30) is fixedly connected. A support spring (33) is fixedly connected between the side of the fixed plate (32) near the support shaft (25) and the inner wall of the limit slot (30). Multiple mounting holes (13) are opened in the sliding block (10). The end of the fixed rod (31) near the support shaft (25) can be inserted into the mounting hole (13).

4. The butterfly valve structure with a detachable valve seat ring according to claim 1, characterized in that: A stabilizing block (14) is fixedly connected to the sliding block (10), and a stabilizing groove (27) is provided on the inner wall of the sliding groove (26). The stabilizing groove (27) is slidably connected to the stabilizing block (14).

5. The butterfly valve structure with a detachable valve seat ring according to claim 4, characterized in that: The installation mechanism includes an installation groove (8) that runs through the fixed block (5), a connecting block (7) that can be inserted into the installation groove (8) and fixedly connected to the positioning block (4), a sliding groove (9) is provided on one side of the connecting block (7), the inner wall of the sliding groove (9) away from the positioning block (4) is inclined, a vertical block (19) is fixedly connected to the fixed block (5), a fixed groove (18) is provided on the vertical block (19), a support rod (41) that runs through the fixed groove (18) is rotatably connected to the vertical block (19), a sliding column (20) is fixedly connected to the support rod (41), and a rotating block (21) is fixedly connected to the end of the support rod (41) away from the fixed block (5).

6. The butterfly valve structure with a detachable valve seat ring according to claim 5, characterized in that: The rotating block (21) has a bottom groove (35) on the side near the vertical block (19). A positioning rod (37) that passes through the bottom groove (35) is slidably connected to the rotating block (21). Two positioning holes (39) are opened on the vertical block (19). The end of the positioning rod (37) near the vertical block (19) can be inserted into the positioning hole (39). A limiting block (38) that is slidably connected to the bottom groove (35) is fixedly connected to the positioning rod (37). A positioning spring (36) is fixedly connected between the side of the limiting block (38) away from the vertical block (19) and the inner wall of the bottom groove (35). An installation ball is fixedly connected to the end of the positioning rod (37) away from the vertical block (19).

Images