Manual butterfly valve with hydraulic sealing structure

Abstract

The invention relates to the technical field of butterfly valves, in particular to a manual butterfly valve with a hydraulic sealing structure, which comprises a butterfly valve main body, a hard ring body is arranged in the butterfly valve main body and is matched with a butterfly plate device rotating in the hard ring body to plug a fluid channel, and the hard ring body is fixed on the inner wall of the fluid channel of the butterfly valve main body. A valve rod is arranged in the butterfly valve main body to drive the butterfly plate device to rotate; the butterfly plate device comprises a disc-shaped butterfly plate eccentrically fixed to one side of the valve rod, a soft ring plate, a hard ring cylinder, a door disc arranged on the side, facing fluid, of the disc-shaped butterfly plate, a core rod axially moving at the axis position in the valve rod, and a variable pressure ring tool arranged on the side, back to the fluid, of the disc-shaped butterfly plate, wherein the disc-shaped butterfly plate is eccentrically fixed to one side of the valve rod, and the soft ring plate and the hard ring cylinder are movably arranged outside the disc-shaped butterfly plate in a sleeving mode. The hard ring cylinder and the disc type butterfly plate are matched to clamp the soft ring plate, the soft ring plate is gradually flattened, the contact pressure between the periphery of the soft ring plate and the hard ring body is enhanced, and then the hydraulic sealing performance of the butterfly valve is enhanced.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, specifically a manual butterfly valve with a hydraulic sealing structure. Background Technology

[0002] Manual butterfly valves are valve devices used in gas pipelines in the sulfuric acid industry, sulfur combustion processes in sulfuric acid production systems, and in the chemical, petrochemical, and pharmaceutical industries. The main materials include gray cast iron, stainless steel, and aluminum alloy. They control the opening and closing of the pipeline medium by rotating a disc-shaped butterfly plate. Traditional technology involves surrounding the disc-shaped butterfly plate with a soft ring, which seals against a hard ring fixed to the inner wall of the valve passage. This allows the butterfly plate to intercept the fluid in the passage. Improving the contact sealing performance between the soft and hard rings, and innovating to enhance the butterfly valve's safe interception capability, is a key area for technological research and development.

[0003] Expanding the periphery of the soft ring can increase the contact pressure with the hard ring, but it makes the butterfly valve difficult to open and close, increases friction between the soft and hard rings, and may damage the soft ring after repeated opening and closing, thus affecting the sealing effect. If the soft ring automatically expands after the soft and hard rings are mated together, thereby strengthening the contact pressure with the hard ring, the friction problem can be avoided. Therefore, this invention provides a manual butterfly valve with a hydraulic sealing structure. Summary of the Invention

[0004] The purpose of this invention is to provide a manual butterfly valve with a hydraulic sealing structure to solve the problem of soft ring expansion friction mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a manual butterfly valve with a hydraulic sealing structure, comprising a butterfly valve body, wherein the fluid passage is blocked by a hard ring and a butterfly plate rotating within the hard ring, the hard ring being fixed to the inner wall of the fluid passage of the butterfly valve body, and a valve stem driving the butterfly plate to rotate within the butterfly valve body, the butterfly plate comprising:

[0006] A disc-shaped butterfly plate is eccentrically fixed to one side of the valve stem, and a soft ring plate and a hard ring cylinder are movably sleeved on the outside of the disc-shaped butterfly plate. The disc-shaped butterfly plate drives the soft ring plate to contact and seal with the hard ring body. The hard ring cylinder and the disc-shaped butterfly plate clamp and compress the soft ring plate to cause the soft ring plate to expand and deform, thereby increasing the seal between the hard ring body and the soft ring plate.

[0007] The butterfly valve body has a valve plate facing the fluid side and a core rod that moves axially at the axial center position inside the valve stem. The movement of the core rod is controlled by a manual switch on the butterfly valve body, and the core rod and the valve plate move synchronously through a fixed bracket.

[0008] The pressure-changing ring is installed on the fluid-facing side of the disc-shaped plate. When the hard ring and the soft ring plate are sealed together, the pressure-changing ring applies a thrust to the hard ring cylinder. When the hard ring and the soft ring plate leak, the pressure-changing ring releases the hard ring cylinder and reapplies the thrust. The soft ring plate eliminates the leak by re-expanding to contact the hard ring.

[0009] The transformer ring includes:

[0010] The output ring section that applies axial thrust to the rigid ring cylinder, and the path component that drives the output ring section;

[0011] A pipe component that passes through a disc-shaped plate at one end, the pipe component being a pressure transmission path component that collects fluid pressure.

[0012] The transformer ring also includes:

[0013] A monitoring ring for detecting leaks in the circumferential joint between a hard ring body and a soft ring plate, and a swing drive plate for establishing linkage between the monitoring ring and the path components;

[0014] The path component is connected to a partition assembly on one side, which is used to drive the energy storage device of the partition assembly, a trapping assembly for releasing the kinetic energy in the energy storage device, and an L-shaped counter-adjustment frame that establishes a linkage between the trapping assembly and the monitoring ring.

[0015] The output ring includes a plurality of uniformly arranged pressure foot groups that are in contact with one side of the hard ring cylinder, an outer ring gear that drives all the pressure foot groups, and a portal frame for limiting and supporting the outer ring gear, and the portal frame is fixed on the disc-shaped plate.

[0016] The presser foot assembly includes an L-shaped foot plate for pushing the hard ring cylinder, a worm gear with a row of teeth on the L-shaped foot plate for transmission, and a bracket fixed on the disc plate. The bracket supports the L-shaped foot plate and the worm gear, and the end of the worm gear meshes with the outer ring plate gear through a fixed gear.

[0017] The path component includes a double-sided gear that meshes with a fixed arc-shaped rack on the outer ring gear, a T-shaped rack body that also drives one side of the double-sided gear, a last position frame for limiting the movement direction of the T-shaped rack body, and a spring placed between the T-shaped rack body and the last position frame. The last position frame is fixed on a disc-shaped butterfly plate, and one end of the double-sided gear is movably sleeved in a through hole opened on the last position frame by setting a shaft.

[0018] The path component also includes an L-shaped rack body distributed at one end of the T-shaped rack body, a conical plate between the L-shaped rack body and the T-shaped rack body, a first-head frame for limiting the movement direction of the L-shaped rack body, a three-control shaft supported on the first-head frame, and a first-head swing column fixed at one end of the three-control shaft. The first-head swing column is provided with an arc-shaped rack to mesh with the L-shaped rack body for transmission. The first-head frame is fixed on a disc-shaped plate. The conical plate is provided with a tip to contact the inclined surface at the end of the L-shaped rack body and the inclined surface at the end of the T-shaped rack body, respectively. The other end of the three-control shaft is fixedly connected to the swing drive plate.

[0019] The pipeline component includes a collecting pipe with one end penetrating a disc-shaped butterfly plate, an arc-shaped pipe fixedly connected to the other end of the collecting pipe, a disc column that moves in an arc shape within the arc-shaped pipe, and a booster frame fixedly connected to the disc column. The booster frame is provided with an arc-shaped column that passes through a ring plate at the end of the arc-shaped pipe. A gap is left between the disc column and the arc-shaped pipe, and a gap is left between the arc-shaped column of the booster frame and the ring plate of the arc-shaped pipe. One end of the booster frame is fixedly connected to a three-control shaft, and a gate disc blocks the water inlet port of the collecting pipe.

[0020] The monitoring ring includes an outer ring plate gear and an inner ring plate gear arranged around one side of the disc-shaped butterfly plate, multiple control plate units arranged around the outer ring plate gear and the inner ring plate gear, and a lightweight plate connected to one end of the control plate unit. The outer ring plate gear is limited and supported by multiple protrusions on the disc-shaped butterfly plate. The outer ring plate gear is meshed with the arc rack on the swing drive plate by an arc rack on the outer ring plate gear. The L-shaped reverse adjustment frame is fixedly connected to the inner ring plate gear.

[0021] After the lightweight plate moves, it blocks one side of the joint between the soft ring plate and the hard ring body, and the fluid leakage through the joint causes the lightweight plate to sway.

[0022] The control plate unit includes a pile base fixed on a disc-shaped butterfly plate, a rack pusher that slides through a square hole in the pile base, a branch gear that drives between the rack pusher and the outer ring plate gear, a hinge shaft and a long shaft gear supported at one end of the rack pusher, a unit shaft that drives on one side of the long shaft gear, and a unit roller that drives between the unit shaft and the inner ring plate gear. The hinge shaft and the long shaft gear drive vertically. The hinge shaft is fixedly connected to the lightweight plate. The pile base supports the branch gear, the unit shaft, and the unit roller. The pile base also supports the inner ring plate gear.

[0023] The partition assembly includes a double-control pile frame fixed on a disc-shaped plate, an anchor plate sliding on the double-control pile frame, a wheel axle supported on the double-control pile frame, and a cam plate fixed on the wheel axle. One end of the double-control pile frame slides through a prism hole opened on a conical plate via a fixed U-shaped frame. The cam plate is composed of two half-discs of different sizes joined together, and the edge of the cam plate contacts the arc surface set at one end of the anchor plate.

[0024] The energy storage device releases power to drive the axle to rotate. The interception component releases the interception of the energy storage device to allow the energy storage device to release power. The interception component includes a switch frame fixed on a disc-shaped plate, a baffle plate hinged at one end of the switch frame, and a pull-back spring for driving the baffle plate to swing back. The pull-back spring is fixed on the switch frame. One end of the L-shaped counter-adjustment frame pushes the inclined plate on the baffle plate to cause the baffle plate to swing, thereby releasing the interception of the energy storage device.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. By rotating the valve stem, the hard ring body and the disc plate are brought into contact and sealed. Then, the fluid portion intercepted in the butterfly valve passage is injected into the pipeline components, converting the internal pressure of the fluid portion into driving force. After subsequent transmission, the hard ring cylinder moves. The hard ring cylinder and the disc-shaped butterfly plate cooperate to clamp the soft ring plate, which is gradually flattened. The contact pressure between the outer periphery of the soft ring plate and the hard ring body is increased, thereby enhancing the hydraulic sealing performance of the butterfly valve.

[0027] 2. This invention detects whether fluid leaks through the contact ring gap between the hard ring body and the soft ring plate by monitoring the ring section. If leakage occurs, the leaking fluid impacts the monitoring ring section nearby, thereby triggering a compensation mechanism. Ultimately, the hard ring cylinder and the disc-shaped butterfly plate separate and then approach each other. During this process, the soft ring plate is readjusted and compressed to eliminate the leakage problem caused by uneven compression deformation of the soft ring plate itself. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the present invention.

[0030] Figure 3 This is a schematic diagram of a hard ring structure.

[0031] Figure 4 This is a schematic diagram of the door panel location.

[0032] Figure 5 This is a schematic diagram showing the location of the flexible ring plate.

[0033] Figure 6 This is a schematic diagram showing the location of the transformer ring.

[0034] Figure 7 This is a schematic diagram of the transformer ring structure.

[0035] Figure 8 This is a schematic diagram of the output ring structure.

[0036] Figure 9 This is a schematic diagram of the presser foot assembly.

[0037] Figure 10This is a schematic diagram of the path component structure.

[0038] Figure 11 This is a schematic diagram of the pipe component structure.

[0039] Figure 12 This is a schematic diagram of a three-axis control structure.

[0040] Figure 13 This is a schematic diagram showing the location of the collection tube.

[0041] Figure 14 This is a schematic diagram of the monitoring ring structure.

[0042] Figure 15 This is a schematic diagram of the control board unit structure.

[0043] Figure 16 This is a schematic diagram of the partition component structure.

[0044] Figure 17 This is a schematic diagram of an energy storage device.

[0045] In the diagram: 1. Butterfly valve body; 2. Hard ring body; 3. Butterfly plate assembly; 4. Valve stem; 5. Disc-shaped butterfly plate; 6. Soft ring plate; 7. Hard ring cylinder; 8. Valve plate; 9. Core rod; 901. Sleeve; 902. Compression spring; 10. Transformer ring; 11. Output ring; 12. Path component; 13. Pipe component; 14. Monitoring ring; 15. Swing drive plate; 16. Energy storage device; 161. Output worm gear; 162. Side shaft; 163. Dividing plate; 164. Cylinder cover; 165. Piston shaft; 166. Ring moving column; 167. Spring; 17. Interception assembly; 18. L-shaped reverse adjustment frame; 19. Isolation assembly; 20. Pressure foot assembly; 21. Outer ring gear; 22. Gantry frame; 23. Leg; 24. L-shaped foot plate. 24. Split worm gear; 25. Three-control shaft; 26. First-position swing column; 27. First-position frame; 28. L-shaped rack body; 29. ​​Conical plate; 30. Last-position frame; 31. T-shaped rack body; 32. Spring; 33. Double-sided gear; 34. Collection pipe; 35. Disc column; 36. Arc-shaped tube; 37. Pressure booster frame; 38. Outer ring plate gear; 39. Control plate unit; 40. Lightweight plate; 41. Inner ring plate gear; 42. Rack push column; 43. Long shaft gear; 44. Split gear; 45. Unit shaft; 46. Pile base; 47. Unit roller; 48. Hinge shaft; 49. Anchor plate; 50. Double-control pile frame; 51. Cam disc; 52. Wheel axle; 53. Baffle plate; 54. Pull-back spring; 55. Switch frame; 56. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1 to 17 This invention provides a technical solution: a manual butterfly valve with a hydraulic sealing structure, comprising a butterfly valve body 1, wherein a hard ring 2 and a butterfly plate 3 rotating within the hard ring 2 cooperate to block the fluid passage in the butterfly valve body 1, the hard ring 2 being fixed to the inner wall of the fluid passage in the butterfly valve body 1, and a valve stem 4 driving the butterfly plate 3 to rotate in the butterfly valve body 1, the butterfly plate 3 comprising:

[0048] The disc-shaped butterfly plate 5 is eccentrically fixed on one side of the valve stem 4, and the soft ring plate 6 and hard ring cylinder 7 are movably sleeved on the outside of the disc-shaped butterfly plate 5. The disc-shaped butterfly plate 5 drives the soft ring plate 6 to contact and seal with the hard ring body 2. The hard ring cylinder 7 and the disc-shaped butterfly plate 5 clamp and compress the soft ring plate 6 to cause the soft ring plate 6 to expand and deform, thereby increasing the seal between the hard ring body 2 and the soft ring plate 6.

[0049] The disc-shaped butterfly plate 5 has a gate plate 8 facing the fluid side, and a core rod 9 that moves axially at the axial position inside the valve stem 4. The movement of the core rod 9 is controlled by a manual switch on the butterfly valve body 1, and the core rod 9 and the gate plate 8 move synchronously through a fixed bracket.

[0050] A pressure-shifting ring 10 is installed on the fluid-facing side of the disc-shaped butterfly plate 5. When the hard ring body 2 and the soft ring plate 6 are mated and sealed, the pressure-shifting ring 10 applies a thrust to the hard ring cylinder 7. When leakage occurs during the mating of the hard ring body 2 and the soft ring plate 6, the pressure-shifting ring 10 releases the hard ring cylinder 7 and reapplies the thrust. The soft ring plate 6 eliminates the leakage by re-expanding its contact with the hard ring body 2. It should be noted that even when the hard ring cylinder 7 and the disc-shaped butterfly plate 5 cooperate to limit the soft ring plate 6, and the soft ring plate 6 is in a naturally full state, after the soft ring plate 6 and the hard ring 2 are fully mated... A seal can still be formed between the two, which is the traditional sealing technology. In this invention, the pressure-changing ring 10 applies a thrust to the hard ring cylinder 7. The hard ring cylinder 7 and the disc-shaped butterfly plate 5 cooperate to press the soft ring plate 6, making the soft ring plate 6 flatter. This increases the sealing between the soft ring plate 6 and the hard ring body 2 after the edge of the soft ring plate 6 expands. The soft ring plate 6 expands after the hard ring body 2 and the butterfly plate device 3 are docked. The disc-shaped butterfly plate 5 is perpendicular to the fluid delivery direction, which will generate sufficient fluid pressure to drive the pressure-changing ring 10 to run.

[0051] refer to Figure 7 Understanding, transformer ring 10 includes:

[0052] An output ring 11 that applies axial thrust to the rigid ring cylinder 7, and a path component 12 that drives the output ring 11; a pipe component 13 that passes through the disc-shaped butterfly plate 5 at one end, and the pipe component 13 pressurizes the drive path component 12 by collecting fluid pressure.

[0053] refer to Figure 7 It is understood that the transformer ring 10 also includes:

[0054] The monitoring ring 14 is used to detect leakage at the joint between the hard ring body 2 and the soft ring plate 6, and the swing drive plate 15 establishes linkage between the monitoring ring 14 and the path component 12; the isolation component 19 is connected to one side of the path component 12, the energy storage device 16 is used to drive the isolation component 19, the interception component 17 is used to release the kinetic energy in the energy storage device 16, and the L-shaped counter-adjustment frame 18 establishes linkage between the interception component 17 and the monitoring ring 14.

[0055] refer to Figure 8 The output ring 11 includes multiple uniformly arranged pressure foot groups 20 that are in contact with one side of the hard ring cylinder 7, an outer ring gear 21 that drives all the pressure foot groups 20, and a portal frame 22 for limiting and supporting the outer ring gear 21. The portal frame 22 is fixed on the disc-shaped butterfly plate 5. Two portal frames 22 are uniformly arranged in the outer ring gear 21. The inner edge of the outer ring gear 21 is engaged in the arc groove opened on the outer side wall of the portal frame 22.

[0056] refer to Figure 9 The presser foot assembly 20 includes an L-shaped foot plate 24 for pushing the hard ring cylinder 7, a worm gear 25 with a row of teeth on the L-shaped foot plate 24 for transmission, and a bracket 23 fixed on the disc-shaped butterfly plate 5. The bracket 23 supports the L-shaped foot plate 24 and the worm gear 25. The end of the worm gear 25 is driven by a fixed gear and meshes with the outer ring gear 21. The tooth shape on the L-shaped foot plate 24 can be understood as a small segment of inward-facing helical teeth. The L-shaped foot plate 24 slides through the plate hole opened on the bracket 23, and the worm gear 25 is movably sleeved in the through hole opened on the bracket 23.

[0057] refer to Figure 10 The path component 12 includes a double-sided gear 34 that meshes with a fixed arc-shaped rack on the outer ring gear 21, a T-shaped rack body 32 that also drives one side of the double-sided gear 34, a last position frame 31 for limiting the movement direction of the T-shaped rack body 32, and a spring 33 placed between the T-shaped rack body 32 and the last position frame 31. The last position frame 31 is fixed on the disc-shaped butterfly plate 5. One end of the double-sided gear 34 is movably sleeved in a through hole opened on the last position frame 31 by setting a shaft. The spring 33 is sleeved on a guide post set on the last position frame 31, and the guide post slides through the through hole opened on the T-shaped rack body 32. One side of the T-shaped rack body 32 is inserted into a groove opened on the last position frame 31.

[0058] The path component 12 also includes an L-shaped rack 29 distributed at one end of the T-shaped rack 32, a tapered plate 30 between the L-shaped rack 29 and the T-shaped rack 32, a first-head frame 28 for limiting the movement direction of the L-shaped rack 29, a three-control shaft 26 supported on the first-head frame 28, and a first-head swing column 27 fixed at one end of the three-control shaft 26. The first-head swing column 27 is provided with an arc-shaped rack to mesh with the L-shaped rack 29 for transmission. The first-head frame 28 is fixed on the disc-shaped butterfly plate 5. The tapered plate 30 is provided with a pointed tip to contact the inclined surface at the end of the L-shaped rack 29 and the inclined surface at the end of the T-shaped rack 32 respectively. The other end of the three-control shaft 26 is fixedly connected to the swing drive plate 15. The first-head frame 28 is provided with a square column to slide through the square hole opened in the L-shaped rack 29. The three-control shaft 26 is movably sleeved in the through hole opened in the first-head frame 28.

[0059] The pipeline component 13 includes a collection pipe 35 with one end penetrating the disc-shaped butterfly plate 5, an arc-shaped pipe 37 with the other end of the collection pipe 35 fixedly connected, a disc column 36 that moves in an arc shape in the arc-shaped pipe 37, and a booster frame 38 fixedly connected to the disc column 36. The booster frame 38 is provided with an arc-shaped column that passes through the ring plate provided at the end of the arc-shaped pipe 37. A gap is left between the disc column 36 and the arc-shaped pipe 37, and a gap is left between the arc-shaped column of the booster frame 38 and the ring plate of the arc-shaped pipe 37. One end of the booster frame 38 is fixedly connected to the three-control shaft 26, and the gate plate 8 blocks the water inlet port of the collection pipe 35.

[0060] Reference Appendix Figure 13 Understandably, a sleeve 901 and a compression spring 902 are externally fitted on a partial section of the valve stem 4. A protruding plate is provided inside the sleeve 901 to be fixedly connected to the core rod 9, and a notch is provided on the valve stem 4 for the protruding plate to move. One end of the compression spring 902 contacts the sleeve 901, and the other end contacts the outer ring body fixed on the valve stem 4. When the manual switch is pressed, the rotatable sleeve 901 is pressed, which causes the core rod 9 to move axially in the valve stem 4. The core rod 9 descends and drives the gate plate 8. After the gate plate 8 descends, it blocks the passage of the collection pipe 35.

[0061] The valve stem 4 is externally connected to a handle on the outside of the butterfly valve. By rotating the handle, the valve stem 4 and the disc-shaped butterfly plate 5 can be rotated synchronously. After the disc-shaped butterfly plate 5 and the hard ring 2 are on the same plane, the handle is stopped. This initially seals the fluid passage in the butterfly valve, which is called the initial sealing. Figure 2 and attached Figure 3 The displayed state indicates that the hydraulic seal will be automatically enhanced next.

[0062] The specific process of enhancing hydraulic sealing: The plane of the disc-shaped butterfly plate 5 is perpendicular to the fluid delivery direction. After the fluid passing through the butterfly valve is intercepted by the disc-shaped butterfly plate 5, a small channel is left on the disc-shaped butterfly plate 5, that is, some of the fluid flows into the collection pipe 35. Then the fluid impacts the disc column 36, and the disc column 36 moves to drive the booster frame 38 to swing. After the disc column 36 moves to the end, it contacts and seals with the ring plate at the port of the arc-shaped pipe 37. In this way, the liquid injected into the arc-shaped pipe 37 will not continue to flow. At this time, the fluid in the butterfly valve is completely intercepted, and at the same time, the hard ring body 2 and the butterfly plate 3 achieve enhanced hydraulic sealing.

[0063] As previously mentioned, the axial movement of the hard ring cylinder 7 compresses the soft ring plate 6, causing the soft ring plate 6 to gradually flatten and its outer edge to deform and expand. This ensures that the soft ring plate 6 and the hard ring body 2 are in close contact and sealed. The specific process of the pressure booster frame 38 swinging to the axial movement of the hard ring cylinder 7 is as follows: the pressure booster frame 38 swings, causing the three-control shaft 26 to rotate. Subsequently, the first pivot column 27 rotates, causing the L-shaped rack body 29 to move. The L-shaped rack body 29 pushes the conical plate 30, which in turn causes the T-shaped rack body 32 to move. Next, the double-sided gear 34 rotates, driving the outer ring plate gear 21. The outer ring plate gear 21 drives all the locating worm gears 25 to rotate, causing the L-shaped foot plates 24 to move. In this way, all the L-shaped foot plates 24 together push the hard ring cylinder 7, causing the hard ring cylinder 7 to move axially.

[0064] The monitoring ring 14 includes an outer ring plate gear 39 and an inner ring plate gear 42 arranged around one side of the disc-shaped butterfly plate 5, multiple control plate units 40 arranged around the outer ring plate gear 39 and the inner ring plate gear 42, and a lightweight plate 41 connected to one end of the control plate unit 40. The outer ring plate gear 39 is limited and supported by multiple protrusions on the disc-shaped butterfly plate 5. The outer ring plate gear 39 is meshed with the arc rack on the swing drive plate 15 by an arc rack. The L-shaped reverse adjustment frame 18 is fixedly connected to the inner ring plate gear 42.

[0065] After the lightweight plate 41 moves, it blocks one side of the joint between the soft ring plate 6 and the hard ring body 2, and the fluid leakage through the joint causes the lightweight plate 41 to swing.

[0066] The control unit 40 includes a base 47 fixed on a disc-shaped butterfly plate 5, a rack pusher 43 that slides through a square hole in the base 47, a branch gear 45 that drives between the rack pusher 43 and the outer ring plate gear 39, a hinge shaft 49 and a long shaft gear 44 supported at one end of the rack pusher 43, a unit shaft 46 that drives on one side of the long shaft gear 44, and a unit roller 48 that drives between the unit shaft 46 and the inner ring plate gear 42. The hinge shaft 49 and the long shaft gear 44 drive vertically. The hinge shaft 49 is fixedly connected to the lightweight plate 41. The base 47 supports the branch gear 45, the unit shaft 46, and the unit roller 48. The base 47 also supports the inner ring plate gear 42. One end of the branch gear 45 is movably sleeved in a through hole in the base 47 via a fixed shaft. In the middle, the unit shaft 46 and the unit roller 48 are respectively movably sleeved in the two through holes opened on the pile base 47. One end of the unit roller 48 is fixed with a gear to mesh with the inner ring plate gear 42 for transmission, and the other end of the unit roller 48 is fixed with a bevel gear to mesh with the bevel gear fixed at the end of the unit roller 48 for transmission. The unit shaft 46 is externally connected to the long shaft gear 44 through a fixed gear for transmission. During the axial movement of the long shaft gear 44, the long shaft gear 44 and the unit shaft 46 can still rotate stably. The hinge shaft 49 and the long shaft gear 44 are respectively movably sleeved in the two through holes opened at the end of the rack push column 43. In this way, the rack push column 43 can drive the hinge shaft 49 and the long shaft gear 44 to move synchronously. The outer edge of the inner ring plate gear 42 is partially inserted into the groove opened on the pile base 47.

[0067] The partition assembly 19 includes a double-control pile frame 51 fixed on a disc-shaped butterfly plate 5, an anchor plate 50 sliding on the double-control pile frame 51, a wheel axle 53 supported on the double-control pile frame 51, and a cam disk 52 fixed on the wheel axle 53. One end of the double-control pile frame 51 slides through a prism hole opened on the conical plate 30 via a fixed U-shaped frame. The cam disk 52 is composed of two half-discs of different sizes joined together, and the edge of the cam disk 52 contacts the arc surface set at one end of the anchor plate 50. The wheel axle 53 is movably sleeved in the through hole opened on the double-control pile frame 51. Two sliding columns are set on the anchor plate 50 to pass through the sliding grooves opened on both sides of the double-control pile frame 51 respectively.

[0068] The energy storage device 16 releases power to drive the axle 53 to rotate. The interception component 17 releases the interception of the energy storage device 16 to allow the energy storage device 16 to release power. The interception component 17 includes a switch frame 56 fixed on the disc-shaped butterfly plate 5, a baffle plate 54 hinged at one end of the switch frame 56, and a pull-back spring 55 for driving the baffle plate 54 to swing back. The pull-back spring 55 is fixed on the switch frame 56. One end of the L-shaped counter-adjustment frame 18 pushes the inclined plate provided on the baffle plate 54 to cause the baffle plate 54 to swing, thereby releasing the interception of the energy storage device 16. The shaft provided on the baffle plate 54 is movably sleeved in the through hole opened on the switch frame 56, and one end of the pull-back spring 55 is inserted into the plate hole opened on the shaft of the baffle plate 54.

[0069] Energy storage device 16 includes a pile shaft 165 with one end fixed to a disc-shaped plate 5, a spring 167 fixedly sleeved at the other end of the pile shaft 165, a cylindrical cover 164 fixedly sleeved on the outside of the spring 167, a ring-shaped column 166 fixed on the outside of the cylindrical cover 164, a side shaft 162 that drives the outside of the cylindrical cover 164, an output worm gear 161 that drives the side shaft 162 perpendicularly, and a split plate 163 fixed to the pile shaft 165. The output worm gear 161 and the side shaft 162 are respectively movably sleeved on the split plate. In the two through holes on 163, one end of the side shaft 162 meshes with the external gear ring on the barrel cover 164 via a fixed gear, and the other end of the side shaft 162 meshes with the bevel gear fixed at the end of the output worm 161 via a fixed bevel gear. The output worm 161 meshes with the worm wheel fixed at the end of the wheel axle 53. The pile shaft 165 is movably sleeved in the through hole in the middle of the barrel cover 164. The baffle plate 54 intercepts the ring-moving column 166, thereby restricting the rotation of the barrel cover 164. (See attached diagram) Figure 17 Understandably, the pile shaft 165 is divided into a base section and an end section that is fixedly connected to the spring 167. The end section and the base section of the pile shaft 165 are fixedly connected by multiple bolts. In other words, the end section of the pile shaft 165, the spring 167, and the barrel cover 164 can be removed as a whole. After the spring 167 is re-wound, the whole assembly can be reinstalled on the base section of the pile shaft 165.

[0070] After a leak occurs at the contact seam between the hard ring body 2 and the soft ring plate 6, the leaking fluid impacts the lightweight plate 41, thus detecting the leak. Subsequently, the hard ring cylinder 7 loosens the soft ring plate 6, and the soft ring plate 6 gradually recovers. The hard ring cylinder 7 then presses the soft ring plate 6 again, and the soft ring plate 6 re-contacts and seals with the hard ring body 2. In this way, the soft ring plate 6 avoids leakage caused by uneven local deformation through self-adjustment.

[0071] After the soft ring plate 6 and the hard ring body 2 come into contact and seal, the multiple lightweight plates 41 arranged around it gradually extend outwards. Then, the lightweight plates 41 block the joint between the hard ring body 2 and the soft ring plate 6 to detect leakage. As mentioned before, after the soft ring plate 6 and the hard ring body 2 initially seal, the pressure booster 38 swings. The pressure booster 38 drives the three-control shaft 26, which in turn drives the swing drive plate 15 to rotate. Next, all the rack pushers 43 are driven through the outer ring plate gear 39, which in turn drives the lightweight plates 41 through the hinge shaft 49. After the lightweight plates 41 move, they block the joint.

[0072] Before opening the internal passage of the butterfly valve, it is necessary to control the lightweight plate 41 to reset so that it no longer blocks the annular gap, allowing the disc butterfly plate 5 to rotate smoothly. Specifically, this is done by manually adjusting the valve plate 8 to move. The valve plate 8 covers the water inlet port of the collection pipe 35, so the water pressure in the collection pipe 35 no longer suppresses the disc column 36. The fluid pressure disappears, and the disc column 36 automatically swings back to its reset position. The subsequent transmission causes the lightweight plate 41 to reset and move, meaning that the lightweight plate 41 leaves the annular gap between the soft ring plate 6 and the hard ring body 2. The pressure source for the disc column 36 to swing back to its reset position is the spring 33. The spring 33 pushes the T-shaped rack body 32 to reset, which in turn pushes the L-shaped rack body 29 in the opposite direction through the conical plate 30. Then, the first and second swing column 27 resets and swings, driving the three-control shaft 26 to reverse, causing the disc column 36 to reset and swing back.

[0073] The specific control process for the axial movement of the lightweight plate 41 as it swings towards the hard ring cylinder 7 is as follows: The swing of the lightweight plate 41 drives the hinge shaft 49 to rotate, which then drives the unit shaft 46 through the long shaft gear 44, and in turn, the unit roller 48 rotates to drive the inner ring plate gear 42 to rotate. Any swing of the lightweight plate 41 will trigger the rotation of the inner ring plate gear 42, which drives the L-shaped reverse adjustment frame 18. The movement of the L-shaped reverse adjustment frame 18 will push the baffle plate 54. After the baffle plate 54 swings, it releases the ring column 166, which in turn releases the power of the spring 167, driving the barrel cover 164 to rotate. During the process of the barrel cover 164 rotating one revolution, it drives the side shaft 162 to rotate multiple revolutions, and then drives the wheel shaft 53 to rotate one revolution through the output worm gear 161, so that the cam disk 52 completes one revolution. (See attached diagram) Figure 16 Initially, as the cam disk 52 rotates counterclockwise, the anchor plate 50 slides to the right, and the conical plate 30 gradually moves away from between the L-shaped rack body 29 and the T-shaped rack body 32. The driving force for this movement is the rebound of the spring 33. The L-shaped rack body 29 remains stationary, while the spring 33 moves upward. As mentioned earlier, the descent of the spring 33 will eventually cause the hard ring cylinder 7 to move axially. Therefore, the rise of the spring 33 will cause the hard ring cylinder 7 to move in the opposite direction, meaning the hard ring cylinder 7 releases its pressure on the soft ring plate 6. In this way, the soft ring plate 6 gradually returns to its original shape. At the end of the rotation of the cam disk 52, the cam disk 52 pushes the anchor plate 50 again. Figure 16 The anchor plate 50 slides to the left, and then the conical plate 30 pushes back between the L-shaped rack body 29 and the spring 33. The spring 33 drops again, eventually causing the hard ring cylinder 7 to press the soft ring plate 6 again. The soft ring plate 6 adjusts its shape during intermittent pressure to eliminate the contact leakage problem that occurred before.

[0074] If leakage continues, the lightweight plate 41 tilts at the leak point, the subsequent L-shaped counter-adjustment frame 18 will not reset, the baffle plate 54 will not intercept the rotating column 166, and the cylindrical cover 164 will continue to rotate, automatically forming a new round of drive, that is, the cam disc 52 rotates another revolution, and the corresponding soft ring plate 6 deforms again. This cycle continues, thus solving the leakage problem. Normally, when leakage occurs, the soft ring plate 6 is released, and then the soft ring plate 6 is re-pressed, so that the soft ring plate 6 and the hard ring body 2 can make firm contact and seal. If the problem is not solved, the soft ring plate 6 will automatically continue to switch between being released and being pressed.

[0075] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manual butterfly valve with a hydraulic sealing structure, comprising a butterfly valve body (1), characterized in that: The butterfly valve body (1) uses a hard ring (2) and a butterfly plate (3) rotating within the hard ring (2) to block the fluid passage. The hard ring (2) is fixed to the inner wall of the fluid passage of the butterfly valve body (1). The butterfly valve body (1) also uses a valve stem (4) to drive the butterfly plate (3) to rotate. The butterfly plate (3) includes: A disc-shaped butterfly plate (5) is eccentrically fixed on one side of the valve stem (4), and a soft ring plate (6) and a hard ring cylinder (7) are movably sleeved on the outside of the disc-shaped butterfly plate (5). The disc-shaped butterfly plate (5) drives the soft ring plate (6) to contact and seal with the hard ring body (2). The hard ring cylinder (7) and the disc-shaped butterfly plate (5) clamp and compress the soft ring plate (6) to cause the soft ring plate (6) to expand and deform, thereby increasing the seal between the hard ring body (2) and the soft ring plate (6). The disc-shaped butterfly plate (5) has a gate plate (8) facing the fluid side, and a core rod (9) that moves axially at the axial position inside the valve stem (4). The butterfly valve body (1) is equipped with a manual switch to control the movement of the core rod (9), and the core rod (9) and the gate plate (8) move synchronously through a fixed bracket. A pressure-changing ring (10) is provided on the side of the disc-shaped butterfly plate (5) facing away from the fluid. When the hard ring body (2) and the soft ring plate (6) are sealed together, the pressure-changing ring (10) applies a thrust to the hard ring cylinder (7). When the hard ring body (2) and the soft ring plate (6) leak, the pressure-changing ring (10) releases the hard ring cylinder (7) and reapplies the thrust. The soft ring plate (6) eliminates the leakage by re-expanding to contact the hard ring body (2).

2. A manual butterfly valve with a hydraulic sealing structure according to claim 1, characterized in that: The transformer ring (10) includes: The output ring (11) that applies axial thrust to the hard ring cylinder (7), and the path component (12) that drives the output ring (11). A pipe component (13) that passes through a disc-shaped butterfly plate (5) at one end, the pipe component (13) pressurizes the transmission path component (12) by collecting fluid pressure.

3. A manual butterfly valve with a hydraulic sealing structure according to claim 2, characterized in that: The transformer ring (10) also includes: The monitoring ring (14) is used to detect leakage in the circumferential seam between the hard ring body (2) and the soft ring plate (6), and the swing drive plate (15) establishes linkage between the monitoring ring (14) and the path component (12). The path component (12) is connected to a partition assembly (19), an energy storage device (16) for driving the partition assembly (19), a trapping assembly (17) for releasing the kinetic energy in the energy storage device (16), and an L-shaped counter-adjustment frame (18) for establishing linkage between the trapping assembly (17) and the monitoring ring (14).

4. A manual butterfly valve with a hydraulic sealing structure according to claim 3, characterized in that: The output ring (11) includes a plurality of uniformly arranged presser foot groups (20) that are in contact with one side of the hard ring cylinder (7), an outer ring gear (21) that drives all the presser foot groups (20), and a gantry frame (22) for limiting and supporting the outer ring gear (21), and the gantry frame (22) is fixed on the disc-shaped butterfly plate (5).

5. A manual butterfly valve with a hydraulic sealing structure according to claim 4, characterized in that: The presser foot assembly (20) includes an L-shaped foot plate (24) for pushing the hard ring cylinder (7), a split worm gear (25) with a row of teeth on the L-shaped foot plate (24) for transmission, and a bracket (23) fixed on the disc-shaped butterfly plate (5). The bracket (23) supports the L-shaped foot plate (24) and the split worm gear (25). The end of the split worm gear (25) is connected to the outer ring gear (21) for transmission through a fixed gear.

6. A manual butterfly valve with a hydraulic sealing structure according to claim 4, characterized in that: The path component (12) includes a double-sided gear (34) that meshes with a fixed arc-shaped rack on the outer ring gear (21), a T-shaped rack body (32) that also drives on one side of the double-sided gear (34), a last position frame (31) for limiting the movement direction of the T-shaped rack body (32), and a spring (33) placed between the T-shaped rack body (32) and the last position frame (31). The last position frame (31) is fixed on the disc-shaped butterfly plate (5), and one end of the double-sided gear (34) is movably sleeved in the through hole opened on the last position frame (31) by setting a shaft.

7. A manual butterfly valve with a hydraulic sealing structure according to claim 6, characterized in that: The path component (12) also includes an L-shaped rack (29) distributed at one end of the T-shaped rack (32), a tapered plate (30) between the L-shaped rack (29) and the T-shaped rack (32), a first-head frame (28) for limiting the movement direction of the L-shaped rack (29), a three-control shaft (26) supported on the first-head frame (28), and a first-head swing column (27) fixed at one end of the three-control shaft (26). The first-head swing column (27) is provided with an arc-shaped rack to mesh with the L-shaped rack (29) for transmission. The first-head frame (28) is fixed on the disc-shaped butterfly plate (5). The tapered plate (30) is provided with a tip to contact the inclined surface at the end of the L-shaped rack (29) and the inclined surface at the end of the T-shaped rack (32) respectively. The other end of the three-control shaft (26) is fixedly connected to the swing drive plate (15).

8. A manual butterfly valve with a hydraulic sealing structure according to claim 7, characterized in that: The pipeline component (13) includes a collection pipe (35) with one end penetrating a disc-shaped butterfly plate (5), an arc-shaped pipe (37) with the other end of the collection pipe (35) fixedly connected, a disc column (36) that moves in an arc shape in the arc-shaped pipe (37), and a booster frame (38) fixedly connected to the disc column (36). The booster frame (38) is provided with an arc-shaped column that passes through the ring plate at the end of the arc-shaped pipe (37). A gap is left between the disc column (36) and the arc-shaped pipe (37), and a gap is left between the arc-shaped column of the booster frame (38) and the ring plate of the arc-shaped pipe (37). One end of the booster frame (38) is fixedly connected to the three-control shaft (26), and the gate plate (8) blocks the water inlet port of the collection pipe (35).

9. A manual butterfly valve with a hydraulic sealing structure according to claim 3, characterized in that: The monitoring ring (14) includes an outer ring plate gear (39) and an inner ring plate gear (42) arranged around one side of the disc-shaped butterfly plate (5), multiple ring-shaped control plate units (40) that drive between the outer ring plate gear (39) and the inner ring plate gear (42), and a lightweight plate (41) connected to one end of the control plate unit (40). The outer ring plate gear (39) is limited and supported by multiple protrusions on the disc-shaped butterfly plate (5). The outer ring plate gear (39) is meshed with the arc-shaped rack on the swing drive plate (15) by an arc-shaped rack. The L-shaped reverse adjustment frame (18) and the inner ring plate gear (42) are fixedly connected. After the lightweight plate (41) moves, it stops on one side of the joint between the soft ring plate (6) and the hard ring body (2), and the fluid leakage through the joint causes the lightweight plate (41) to swing.

10. A manual butterfly valve with a hydraulic sealing structure according to claim 9, characterized in that: The control unit (40) includes a pile seat (47) fixed on a disc-shaped butterfly plate (5), a rack pusher (43) that slides through a square hole in the pile seat (47), a split gear (45) that drives between the rack pusher (43) and the outer ring plate gear (39), a hinge shaft (49) and a long shaft gear (44) supported at one end of the rack pusher (43), a unit shaft (46) that drives on one side of the long shaft gear (44), and a unit roller (48) that drives between the unit shaft (46) and the inner ring plate gear (42). The hinge shaft (49) and the long shaft gear (44) drive vertically. The hinge shaft (49) and the lightweight plate (41) are fixedly connected. The pile seat (47) supports the split gear (45), the unit shaft (46) and the unit roller (48). The pile seat (47) also supports the inner ring plate gear (42).

11. A manual butterfly valve with a hydraulic sealing structure according to claim 7, characterized in that: The partition assembly (19) includes a double-control pile frame (51) fixed on a disc-shaped butterfly plate (5), an anchor plate (50) sliding on the double-control pile frame (51), a wheel axle (53) supported on the double-control pile frame (51), and a cam disk (52) fixed on the wheel axle (53). One end of the double-control pile frame (51) slides through a prism hole opened on the conical plate (30) through a fixed U-shaped frame. The cam disk (52) is composed of two half-discs of different sizes joined together, and the edge of the cam disk (52) contacts the arc surface set at one end of the anchor plate (50).

12. A manual butterfly valve with a hydraulic sealing structure according to claim 11, characterized in that: The energy storage device (16) releases power to drive the axle (53) to rotate. The interception component (17) releases the interception of the energy storage device (16) to allow the energy storage device (16) to release power. The interception component (17) includes a switch frame (56) fixed on the disc-shaped butterfly plate (5), a baffle plate (54) hinged at one end of the switch frame (56), and a pull-back spring (55) for driving the baffle plate (54) to swing back. The pull-back spring (55) is fixed on the switch frame (56). One end of the L-shaped counter-adjustment frame (18) pushes the inclined plate set on the baffle plate (54) to cause the baffle plate (54) to swing, thereby releasing the interception of the energy storage device (16).

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