CN113915354B

CN113915354B - Butterfly valve and use method thereof

Info

Publication number: CN113915354B
Application number: CN202111325740.9A
Authority: CN
Inventors: 夏方飞
Original assignee: Bip Palo Luo Jiangsu Engineering Technology Co ltd
Current assignee: Bip Palo Luo Jiangsu Engineering Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2023-01-10
Anticipated expiration: 2041-11-10
Also published as: CN113915354A

Abstract

The invention relates to the field of self-sealing butterfly valves, in particular to a butterfly valve and a using method thereof, and the butterfly valve comprises a pipeline, wherein a closing mechanism is arranged inside the pipeline, a sealing mechanism is arranged inside the closing mechanism, and a regulating mechanism is arranged at the upper end of the closing mechanism.

Description

Butterfly valve and using method thereof

Technical Field

The invention relates to the technical field of butterfly valves, in particular to a butterfly valve and a using method thereof.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline medium, i.e. a valve whose closing member is a disk and can be rotated around the valve shaft to open and close, and can be used for controlling the flow of various fluids of air, water, steam, various corrosive media, slurry, oil product, liquid metal and radioactive medium, etc. and mainly playing the role of cutting off and throttling on the pipeline. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The existing butterfly valve has the advantages of convenient and rapid opening and closing, labor saving, small fluid resistance, frequent operation, slurry can be conveyed, the least liquid is accumulated at the opening of a pipeline, but the butterfly valve also has the defects of small use pressure and working temperature range when in use and poor sealing performance, because the butterfly valve blocks the pipeline through the closure member in a rotating disc shape, the outer side is easily abraded after the closure member is frequently eaten and used, and further the sealing effect between the closure member and the pipeline can be deteriorated, the valve can not work effectively, the existing butterfly valve rotates mostly through the screw rod driving closure member when in use, the rear surface can be corroded after the screw rod is used for a long time, and further the screw rod can not rotate, and when the pressure inside the pipeline is too large, the water pressure can extrude the closure member to move, and further the valve can be leaked.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a butterfly valve.

The technical scheme adopted by the invention for solving the technical problem is as follows: a butterfly valve comprises a pipeline, wherein a closing mechanism is arranged inside the pipeline, a sealing mechanism is arranged inside the closing mechanism, a regulating mechanism is arranged at the upper end of the closing mechanism, a lubricating mechanism is arranged inside the regulating mechanism, a fixing mechanism is arranged inside the regulating mechanism, and a safety mechanism is arranged on the surface of the pipeline;

the closing mechanism comprises a rotating shaft, the rotating shaft is rotatably connected to the side wall of the upper end of the pipeline, the lower end of the rotating shaft is fixedly connected to the inside of the annular groove, the annular groove is formed in the outer circle side wall of the valve block, and the valve block is clamped in the ferrule;

the sealing mechanism comprises a connecting pipe, the connecting pipe is embedded in the valve block, a square pipe is fixedly communicated on the outer wall of the lower end of the connecting pipe, the lower end of the square pipe extends to the outside of the valve block and is inserted into the circular groove, the circular groove is formed in the upper surface of the fixing block, the fixing block is embedded in the side wall of the bottom of the pipeline, a threaded rod is fixedly connected to the inner wall of the bottom of the circular groove, two sealing rings are movably sleeved on the surface of the upper end of the threaded rod and are connected to the inner wall of the two circular groove respectively, the two sealing rings are connected to the inner wall of the square threaded cylinder respectively in a clamped mode, the two circular groove are symmetrically formed in the inner wall of the cavity, the two circular groove are connected to the inner wall of the square threaded cylinder in a threaded mode, the two ends of the connecting pipe are communicated with the two cavities respectively, the two cavities are symmetrically formed in the inner wall of the cavity, a plurality of connecting holes are connected to the pistons in an inserted mode, the other ends of the pistons extend to the circular grooves respectively, and are fixedly connected to the surfaces of the two sealing strips respectively.

Concretely, adjustment mechanism is including adjusting the seat, adjust a fixed connection on the upper end outer wall of pipeline, the jack has been seted up to the lower extreme of adjusting the seat, the inside of jack is pegged graft and is had the pivot, the fixed helical gear that has cup jointed on the upper end surface of pivot, the helical gear joint is inside the turn trough, the turn trough is linked together with the screw hole, the inside at adjusting the seat is seted up to the screw hole level, the internal thread of screw hole is connected with the screw rod, screw rod and helical gear mesh mutually, the one end of screw rod is pegged graft inside a protection section of thick bamboo, the other end of screw rod is pegged graft inside the sleeve, a protection section of thick bamboo and sleeve symmetry fixed connection are on the surface of adjusting the seat, the one end fixedly connected with carousel of screw rod.

Specifically, lubricated mechanism includes the oil box, the fixed intercommunication of oil box is on telescopic lateral wall, fixed intercommunication has the oiling interface on the outer wall of oil box, the inside fixedly connected with thrust spring of oil box, thrust spring's other end fixedly connected with push pedal, the through-hole has been seted up on the other end outer wall of oil box, the fixed cover of symmetry has connect two snap rings, two on the telescopic inner wall the joint has the cotton circle between the snap ring.

Specifically, fixed establishment includes the slot, the slot is seted up and is located the outside one end of sleeve at the screw rod, the inside of slot is pegged graft and is had the awl piece, two bar mouths have been seted up to the symmetry on the inner wall of slot, two the inside of bar mouth is all pegged graft and is had joint board, two same extension spring of fixedly connected with on the one side lateral wall that the joint board is close to each other, two the joint board is corresponding with a plurality of joint grooves respectively, and is a plurality of the joint groove is the annular and sets up on the inner wall of slot.

Specifically, safety mechanism includes two insurance seats, two insurance seat symmetry inlays to be established on the both sides lateral wall of pipeline, two the U-shaped groove has all been seted up to the inside of insurance seat, two the equal joint in inside in U-shaped groove has the U-shaped piece, two the screw has all been seted up in the center department of U-shaped piece, two the equal threaded connection in inside of screw has the screw thread post, two the screw thread post is equallyd divide and is rotated through a bearing and connect on the inner wall in two U-shaped grooves respectively, two the other end of screw thread post all extends to the outside of insurance seat through the round hole, two the round hole is seted up respectively on the inner wall in two U-shaped grooves, two the equal symmetrical fixedly connected with two rotor pieces on the surface of screw thread post, two the equal activity on the surface at U-shaped piece both ends has cup jointed the circle, four cup jointed the circle respectively inside four fixed slots, four the fixed slots are seted up respectively on the inner wall at two U-shaped groove both ends, two the both ends of U-shaped piece are pegged graft respectively inside four perforation, four perforation is seted up respectively on the lateral wall at the both ends of lasso.

Specifically, the cotton ring corresponds to the through hole, and the cotton ring is sleeved on the surface of the screw rod.

Specifically, inclined planes are arranged on the side walls, close to the conical blocks, of one sides of the two clamping plates.

Specifically, the U-shaped piece is corresponding to the valve block, and the distance between the inner walls of the two sides of the U-shaped piece is the same as the thickness of the valve block.

A use method of a butterfly valve comprises the following steps:

the method comprises the following steps that firstly, a turntable is rotated to drive a screw rod to rotate, the inner wall of a threaded hole is pushed when the screw rod rotates, then the screw rod moves, the moving screw rod simultaneously pushes a bevel gear to rotate, the bevel gear drives a rotating shaft to rotate when rotating, the rotating shaft drives a valve block to rotate when rotating, the valve block is clamped on the inner wall of a ferrule, a channel of a pipeline is closed through the valve block and the ferrule, a square pipe is driven to rotate when the valve block rotates, the square pipe drives an internal threaded square pipe to rotate, the inner wall of the threaded square pipe extrudes a threaded rod, the threaded square pipe is further pushed to move through the threaded rod, the upper end and the lower end of the threaded square pipe are separated through a sealing ring inside the threaded square pipe, when the threaded square pipe moves upwards, gas inside the cavity enters a connecting hole to push a piston to move, two sealing strips are pushed to be attached to the inner wall of the ferrule through a plurality of pistons, and then a gap between the valve block and the ferrule is blocked, so that the channel in a pipeline 1 is sealed, and the pipeline can not be sealed due to the fact that the valve block is abraded;

the second part is that when the screw rotates, the screw moves in the sleeve, the outer wall of the screw is contacted with the cotton ring, the push plate is pushed by the thrust spring to extrude lubricating oil in the oil box, so that the lubricating oil is injected into the cotton ring through the through hole, the moving screw is coated with oil through the cotton ring, the surface of the screw is maintained by the lubricating oil, and the surface of the screw is prevented from rusting and inconvenient rotation;

thirdly, after the valve block and the ferrule are clamped and sealed, pressing the conical block, and extruding the two clamping plates through the conical surface of the conical block, so that the two clamping plates move towards two sides and are respectively clamped in the two clamping grooves, the screw is fixed and cannot rotate, and the situation that the valve block is driven to rotate by the rotation of the screw due to error operation to cause closing failure is prevented;

the fourth step, rotate the rotor at last and drive the screw thread post and rotate, through the inner wall of the surperficial extrusion screw of screw thread post, and then drive the U-shaped piece through the screw and remove, inside the perforation insertion lasso that makes the both ends of U-shaped piece pass through on the lasso, make the U-shaped piece card on the both sides lateral wall of valve block, and then prevent that the valve block from rotating and leading to the pipe seal inefficacy.

The invention has the beneficial effects that:

(1) According to the butterfly valve, when the valve plate rotates, the square tube is driven to rotate, the square tube drives the internal threaded square tube to rotate, the inner wall of the threaded square tube extrudes the threaded rod, the threaded square tube is pushed to move through the threaded rod, the upper end and the lower end of the threaded square tube are separated through the sealing ring inside the threaded square tube, when the threaded square tube moves upwards, gas inside the square tube is pushed to enter the cavity through the connecting tube, the gas inside the cavity enters the connecting hole to push the piston to move, the two sealing strips are pushed to be attached to the inner wall of the ferrule through the plurality of pistons, and then a gap between the valve plate and the ferrule is blocked, so that a channel in the pipeline is sealed, and the valve plate is prevented from being abraded to cause the pipeline to be incapable of being sealed.

(2) According to the butterfly valve, when the screw rotates, the screw moves in the sleeve, the outer wall of the screw is in contact with the cotton ring, the push plate is pushed by the thrust spring to extrude lubricating oil in the oil box, the lubricating oil is injected into the cotton ring through the through hole, the moving screw is coated with the oil through the cotton ring, the surface of the screw is maintained through the lubricating oil, and the situation that the surface of the screw is rusted and inconvenient to rotate is avoided.

(3) According to the butterfly valve, the rotating piece is rotated to drive the threaded column to rotate, the inner wall of the screw hole is extruded through the surface of the threaded column, the U-shaped block is driven to move through the screw hole, two ends of the U-shaped block are inserted into the ferrule through the through hole in the ferrule, the U-shaped block is clamped on the side walls of two sides of the valve block, and therefore the valve block is prevented from rotating to cause sealing failure of a pipeline.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a butterfly valve provided by the present invention;

FIG. 2 is a schematic top view of an adjusting mechanism of a butterfly valve according to the present invention;

FIG. 3 is a schematic top view of a safety mechanism of a butterfly valve according to the present invention;

FIG. 4 is a schematic structural view of a safety mechanism of a butterfly valve according to the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 1 of a butterfly valve according to the present invention;

FIG. 6 is an enlarged view of portion B of FIG. 2 of a butterfly valve in accordance with the present invention;

fig. 7 is a schematic structural view of a threaded square cylinder of a butterfly valve provided by the invention.

In the figure: 1. a pipeline; 2. a closing mechanism; 21. a rotating shaft; 22. a ring groove; 23. a valve plate; 24. a ferrule; 3. a sealing mechanism; 31. a connecting pipe; 32. a square tube; 33. a circular groove; 34. a fixed block; 35. a threaded rod; 36. a seal ring; 37. an annular clamping groove; 38. a threaded square cylinder; 39. a cavity; 310. connecting holes; 311. a piston; 312. a sealing strip; 4. an adjustment mechanism; 41. an adjusting seat; 42. a jack; 43. a helical gear; 44. rotating the groove; 45. a threaded hole; 46. a screw; 47. a protective barrel; 48. a sleeve; 49. a turntable; 5. a lubricating mechanism; 51. an oil box; 52. an oiling interface; 53. a thrust spring; 54. pushing the plate; 55. a through hole; 56. a snap ring; 57. cotton rings; 6. a fixing mechanism; 61. inserting slots; 62. a conical block; 63. a strip-shaped opening; 64. a clamping and connecting plate; 65. a tension spring; 66. a clamping groove; 7. a safety mechanism; 71. a safety seat; 72. a U-shaped groove; 73. a U-shaped block; 74. a screw hole; 75. a threaded post; 76. a bearing; 77. a circular hole; 78. rotating the sheet; 79. sleeving a connecting ring; 710. fixing grooves; 711. and (5) perforating.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, the butterfly valve of the present invention includes a pipeline 1, a closing mechanism 2 is disposed inside the pipeline 1, a sealing mechanism 3 is disposed inside the closing mechanism 2, an upper end of the closing mechanism 2 is provided with an adjusting mechanism 4, a lubricating mechanism 5 is disposed inside the adjusting mechanism 4, a fixing mechanism 6 is disposed inside the adjusting mechanism 4, and a safety mechanism 7 is disposed on a surface of the pipeline 1;

the closing mechanism 2 comprises a rotating shaft 21, the rotating shaft 21 is rotatably connected to the side wall of the upper end of the pipeline 1, the lower end of the rotating shaft 21 is fixedly connected to the inside of an annular groove 22, the annular groove 22 is formed in the outer circular side wall of a valve block 23, the valve block 23 is clamped and connected inside a ferrule 24, the helical gear 43 drives the rotating shaft 21 to rotate when rotating, the rotating shaft 21 drives the valve block 23 to rotate when rotating, the valve block 23 is clamped and connected on the inner wall of the ferrule 24, and a channel of the pipeline 1 is closed through the valve block 23 and the ferrule 24;

the sealing mechanism 3 comprises a connecting pipe 31, the connecting pipe 31 is embedded inside the valve plate 23, a square pipe 32 is fixedly communicated on the outer wall of the lower end of the connecting pipe 31, the lower end of the square pipe 32 extends to the outside of the valve plate 23 and is inserted inside a circular groove 33, the circular groove 33 is arranged on the upper surface of a fixed block 34, the fixed block 34 is embedded on the side wall of the bottom of the pipeline 1, a threaded rod 35 is fixedly connected on the inner wall of the bottom of the circular groove 33, two sealing rings 36 are movably sleeved on the surface of the upper end of the threaded rod 35, the two sealing rings 36 are respectively clamped inside two ring clamping grooves 37, the two ring clamping grooves 37 are symmetrically arranged on the inner wall of a thread square tube 38, the thread square tube 38 is in threaded connection inside the threaded rod 35, two ends of the connecting pipe 31 are respectively communicated with two cavities 39, the two cavities 39 are symmetrically arranged inside the valve plate 23, and a plurality of connecting holes 310 are symmetrically arranged on the inner walls of the two cavities 39, pistons 311 are inserted into the connecting holes 310, the other ends of the pistons 311 extend into the annular groove 22, the pistons 311 are respectively and fixedly connected to the surfaces of the two sealing strips 312, the two sealing strips 312 are symmetrically clamped inside the annular groove 22, when the valve plate 23 rotates, the square tube 32 is driven to rotate, the square tube 32 drives the internal threaded square tube 38 to rotate, the inner wall of the threaded square tube 38 extrudes the threaded rod 35, the threaded square tube 38 is further pushed to move through the threaded rod 35, the upper end and the lower end of the threaded square tube 38 are separated through the sealing ring 36 inside the threaded square tube 38, when the threaded square tube 38 moves upwards, gas inside the square tube 32 is pushed to enter the cavity 39 through the connecting tube 31, the gas inside the cavity 39 enters the connecting holes 310 to push the pistons 311 to move, the two sealing strips 312 are pushed to be attached to the inner wall of the ferrule 24 through the pistons 311, and further, a gap between the valve plate 23 and the ferrule is blocked, the channel in the pipeline 1 is sealed, and the valve plate 23 is prevented from being worn to prevent the pipeline 1 from being unsealed.

Specifically, adjustment mechanism 4 is including adjusting seat 41, adjust seat 41 fixed connection on the upper end outer wall of pipeline 1, jack 42 has been seted up to the lower extreme of adjusting seat 41, the inside of jack 42 is pegged graft and is had pivot 21, the fixed helical gear 43 that has cup jointed on the upper end surface of pivot 21, helical gear 43 joint is inside the turn trough 44, turn trough 44 is linked together with screw hole 45, screw hole 45 level is seted up in the inside of adjusting seat 41, the internal thread of screw hole 45 is connected with screw rod 46, screw rod 46 meshes with helical gear 43 mutually, screw rod 46's one end is pegged graft inside protection section of thick bamboo 47, screw rod 46's the other end is pegged graft inside sleeve 48, protection section of thick bamboo 47 and sleeve 48 symmetry fixed connection are on the surface of adjusting seat 41, screw rod 46's one end fixedly connected with carousel 49, it drives screw rod 46 to rotate carousel 49, push the inner wall of screw rod 45 when screw rod 46 rotates, and then screw rod 46 takes place to remove, the screw rod 46 that removes pushes helical gear 43 rotates simultaneously.

Specifically, lubricating mechanism 5 includes oil box 51, the fixed intercommunication of oil box 51 is on the lateral wall of sleeve 48, fixed intercommunication has oiling interface 52 on oil box 51's the outer wall, oil box 51's inside fixedly connected with thrust spring 53, thrust spring 53's other end fixedly connected with push pedal 54, through-hole 55 has been seted up on oil box 51's the other end outer wall, the fixed rigid coupling of symmetry has two snap rings 56 on sleeve 48's the inner wall, the joint has cotton ring 57 between two snap rings 56, when screw rod 46 is pivoted, screw rod 46 is at the inside removal of sleeve 48, screw rod 46's outer wall and cotton ring 57 contact, promote the inside lubricating oil of push pedal 54 extrusion oil box 51 through thrust spring 53, make lubricating oil pour into cotton ring 57 into through-hole 55, and then carry out the fat liquoring to the screw rod 46 that removes through cotton ring 57, maintain screw rod 46's surface through lubricating oil, prevent that screw rod 46 surface from rustting and rotating inconveniently.

Specifically, fixing mechanism 6 includes slot 61, slot 61 sets up the one end that screw rod 46 is located the sleeve 48 outside at slot 61, peg graft in the inside of slot 61 has awl piece 62, two bar mouths 63 have been seted up to the symmetry on slot 61's the inner wall, the inside of two bar mouths 63 has all been pegged graft and has been had joint board 64, two joint board 64 are the same extension spring 65 of fixedly connected with on the lateral wall of one side that is close to each other, two joint board 64 are corresponding with a plurality of joint grooves 66 respectively, a plurality of joint grooves 66 are the annular and set up on slot 61's inner wall, after valve block 23 and the sealed back of lasso 24 joint, press awl piece 62, extrude two joint boards 64 through the conical surface of awl piece 62, and then make two joint boards 64 move the joint respectively inside two joint grooves 66 to both sides, and then make screw rod 46 receive fixed unable rotation, and then prevent that the error operation from leading to screw rod 46 rotation to drive valve block 23 and rotate and make the closure inefficacy.

Specifically, the safety mechanism 7 comprises two safety seats 71, the two safety seats 71 are symmetrically embedded on the side walls of the two sides of the pipeline 1, the two safety seats 71 are respectively provided with a U-shaped groove 72 inside, the two U-shaped grooves 72 are respectively clamped with a U-shaped block 73 inside, the centers of the two U-shaped blocks 73 are respectively provided with a screw hole 74, the two screw holes 74 are respectively connected with a screw thread column 75 inside in a threaded manner, the two screw thread columns 75 are respectively rotatably connected on the inner walls of the two U-shaped grooves 72 through a bearing 76, the other ends of the two screw thread columns 75 are respectively extended to the outside of the safety seats 71 through a round hole 77, the two round holes 77 are respectively arranged on the inner walls of the two U-shaped grooves 72, the surfaces of the two screw thread columns 75 are respectively and symmetrically and fixedly connected with two rotating pieces 78, the equal movable sleeve joint circle 79 in the surface at two U-shaped piece 73 both ends, four overlap joint circle 79 joint respectively inside four fixed slot 710, four fixed slot 710 are seted up respectively on the inner wall at two U-shaped groove 72 both ends, peg graft respectively inside four perforation 711 at the both ends of two U-shaped pieces 73, four perforation 711 are seted up respectively on the both ends lateral wall of lasso 24, it drives screw post 75 and rotates to rotate rotor 78, the inner wall through screw post 75's surperficial extrusion screw 74, and then drive U-shaped piece 73 through screw 74 and remove, it inserts lasso 24 inside to make U-shaped piece 73's both ends pass through perforation 711 on the lasso 24, make U-shaped piece 73 block on the both sides lateral wall of valve block 23, and then prevent that valve block 23 from rotating and lead to pipeline 1 sealed inefficacy.

Specifically, the cotton ring 57 corresponds to the through hole 55, the cotton ring 57 is sleeved on the surface of the screw 46, and the lubricating oil is injected into the cotton ring 57 through the through hole 55, so that the moving screw 46 is oiled by the cotton ring 57.

Specifically, inclined planes are arranged on the side walls of the two clamping plates 64 close to the conical block 62, the conical block 62 is pressed, the two clamping plates 64 are extruded through the conical surfaces of the conical block 62, and then the two clamping plates 64 are moved towards two sides and are respectively clamped inside the two clamping grooves 66.

Specifically, U-shaped piece 73 is corresponding with valve block 23, and the interval of U-shaped piece 73 both sides inner wall is the same with the thickness of valve block 23, makes U-shaped piece 73 block on the both sides lateral wall of valve block 23, and then prevents that valve block 23 from rotating and leading to pipeline 1 to seal inefficacy.

A use method of a butterfly valve comprises the following steps:

firstly, a rotary disc 49 is rotated to drive a screw 46 to rotate, the screw 46 pushes the inner wall of a threaded hole 45 when rotating, then the screw 46 moves, the moving screw 46 simultaneously pushes a bevel gear 43 to rotate, the bevel gear 43 drives a rotating shaft 21 to rotate when rotating, the rotating shaft 21 drives a valve plate 23 to rotate, so that the valve plate 23 is clamped on the inner wall of a ferrule 24, a channel of the pipeline 1 is closed through the valve plate 23 and the ferrule 24, a square pipe 32 is driven to rotate when the valve plate 23 rotates, the square pipe 32 drives an internal threaded square cylinder 38 to rotate, the inner wall of the threaded square cylinder 38 extrudes a threaded rod 35, then the threaded square cylinder 38 is pushed to move through the threaded rod 35, the upper end and the lower end of the threaded square cylinder 38 are separated through a sealing ring 36 inside the threaded square cylinder 38, when the threaded square cylinder 38 moves upwards, gas inside the square pipe 32 is pushed to enter a cavity 39 through a connecting pipe 31, the gas inside the cavity 39 enters a connecting hole 310 to push a piston 311 to move, two sealing strips 312 are pushed to be attached to the inner wall of the ferrule 24 through a plurality of pistons 311, so that a gap between the valve plate 23 and the ferrule is blocked, thereby preventing the channel in the pipeline 1 from being worn;

in the second part, when the screw rod 46 rotates, the screw rod 46 moves in the sleeve 48, the outer wall of the screw rod 46 is in contact with the cotton ring 57, the push plate 54 is pushed by the thrust spring 53 to extrude lubricating oil in the oil box 51, so that the lubricating oil is injected into the cotton ring 57 through the through hole 55, the moving screw rod 46 is further coated with the oil through the cotton ring 57, the surface of the screw rod 46 is maintained through the lubricating oil, and the surface of the screw rod 46 is prevented from rusting and inconvenient rotation;

thirdly, after the valve plate 23 and the ferrule 24 are clamped and sealed, the conical block 62 is pressed, the two clamping plates 64 are extruded through the conical surface of the conical block 62, the two clamping plates 64 move towards two sides and are clamped in the two clamping grooves 66 respectively, and the screw rod 46 is fixed and cannot rotate, so that the situation that the valve plate 23 is driven to rotate by the rotation of the screw rod 46 due to misoperation to cause closing failure is prevented;

fourthly, finally, the rotating piece 78 is rotated to drive the threaded column 75 to rotate, the inner wall of the screw hole 74 is extruded through the surface of the threaded column 75, and then the U-shaped block 73 is driven to move through the screw hole 74, so that the two ends of the U-shaped block 73 are inserted into the ferrule 24 through the through hole 711 on the ferrule 24, the U-shaped block 73 is clamped on the side walls of the two sides of the valve plate 23, and the valve plate 23 is prevented from rotating to cause sealing failure of the pipeline 1.

The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The butterfly valve is characterized by comprising a pipeline (1), wherein a closing mechanism (2) is arranged inside the pipeline (1), a sealing mechanism (3) is arranged inside the closing mechanism (2), an adjusting mechanism (4) is arranged at the upper end of the closing mechanism (2), a lubricating mechanism (5) is arranged inside the adjusting mechanism (4), a fixing mechanism (6) is arranged inside the adjusting mechanism (4), and a safety mechanism (7) is arranged on the surface of the pipeline (1); the closing mechanism (2) comprises a rotating shaft (21), the rotating shaft (21) is rotatably connected to the side wall of the upper end of the pipeline (1), the lower end of the rotating shaft (21) is fixedly connected to the inside of the annular groove (22), the annular groove (22) is formed in the outer circle side wall of the valve block (23), and the valve block (23) is clamped inside the ferrule (24); the sealing mechanism (3) comprises a connecting pipe (31), the connecting pipe (31) is embedded in the valve plate (23), a square pipe (32) is fixedly communicated with the outer wall of the lower end of the connecting pipe (31), the lower end of the square pipe (32) extends to the outside of the valve plate (23) and is inserted into a round groove (33), the round groove (33) is formed in the upper surface of a fixing block (34), the fixing block (34) is embedded in the side wall of the bottom of the pipeline (1), a threaded rod (35) is fixedly connected to the inner wall of the bottom of the round groove (33), two sealing rings (36) are movably sleeved on the surface of the upper end of the threaded rod (35), the two sealing rings (36) are respectively and connected into two ring grooves (37), the two ring grooves (37) are symmetrically formed in the inner wall of a threaded square cylinder (38), the threaded square cylinder (38) is connected into the threaded rod (35), two ends of the connecting pipe (31) are respectively communicated with two cavities (39), the two cavities (39) are symmetrically formed in the inner wall of the valve plate (23), a plurality of the inner walls of the two piston grooves (310) are symmetrically formed in the inner wall of the piston square cylinder (310), and a plurality of the piston ring grooves (310) are respectively connected with a plurality of pistons (310), and a plurality of connecting holes (311), the pistons (311) are respectively and fixedly connected to the surfaces of the two sealing strips (312), and the two sealing strips (312) are symmetrically clamped in the annular groove (22); the adjusting mechanism (4) comprises an adjusting seat (41), the adjusting seat (41) is fixedly connected to the outer wall of the upper end of the pipeline (1), the lower end of the adjusting seat (41) is provided with an insertion hole (42), a rotating shaft (21) is inserted into the insertion hole (42), a helical gear (43) is fixedly sleeved on the upper end surface of the rotating shaft (21), the helical gear (43) is clamped inside a rotating groove (44), the rotating groove (44) is communicated with a threaded hole (45), the threaded hole (45) is horizontally arranged inside the adjusting seat (41), the internal thread of the threaded hole (45) is connected with a screw (46), the screw (46) is meshed with the helical gear (43), one end of the screw (46) is inserted into a protecting cylinder (47), the other end of the screw (46) is inserted into a sleeve (48), the protecting cylinder (47) and the sleeve (48) are symmetrically and fixedly connected to the surface of the adjusting seat (41), and one end of the screw (46) is fixedly connected with a rotary table (49); the lubricating mechanism (5) comprises an oil box (51), the oil box (51) is fixedly communicated with the side wall of the sleeve (48), the outer wall of the oil box (51) is fixedly communicated with an oil filling connector (52), a thrust spring (53) is fixedly connected inside the oil box (51), the other end of the thrust spring (53) is fixedly connected with a push plate (54), the outer wall of the other end of the oil box (51) is provided with a through hole (55), the inner wall of the sleeve (48) is symmetrically and fixedly sleeved with two clamping rings (56), and a cotton ring (57) is clamped between the two clamping rings (56); the fixing mechanism (6) comprises a slot (61), the slot (61) is formed in one end, located outside the sleeve (48), of the screw rod (46), a conical block (62) is inserted into the slot (61), two strip-shaped openings (63) are symmetrically formed in the inner wall of the slot (61), clamping plates (64) are inserted into the two strip-shaped openings (63), one side wall, close to each other, of each clamping plate (64) is fixedly connected with the same tension spring (65), the two clamping plates (64) correspond to a plurality of clamping grooves (66) respectively, and the clamping grooves (66) are annularly formed in the inner wall of the slot (61); safety mechanism (7) include two insurance seats (71), two insurance seat (71) symmetry inlays to be established on the both sides lateral wall of pipeline (1), two U-shaped groove (72) have all been seted up to the inside of insurance seat (71), two the equal joint in inside of U-shaped groove (72) has U-shaped piece (73), two screw (74) have all been seted up to the center department of U-shaped piece (73), two the equal threaded connection in inside of screw (74) has screw post (75), two screw post (75) are equallyd divide and are do not rotated through a bearing (76) and connect on the inner wall of two U-shaped groove (72), two the other end of screw post (75) all extends to the outside of insurance seat (71) through round hole (77), two round hole (77) is seted up respectively on the inner wall of two U-shaped groove (72), two equal symmetric fixed connection has two commentaries on classics piece (78) on the surface of screw post (75), two U-shaped piece (73) all cup joint circle (79) on the surface, four the grafting circle (79) that all cup joints on the surface of U-shaped piece (73) both ends, four inner wall respectively establish at two inside open grooves (710) the two rings (711, two inner wall of punch holes (710) are established respectively the two fixed slot (710) the inner wall (711, two inside fixed slot (79) are the two inner wall (710) are the joint rings (710) are established respectively the two inner wall (711) are the two inner wall (710) are the two inner wall (79, the two ends of two U-shaped block (73) are respectively the two ends of punch hole (73) are the two punch hole (711) are established respectively the two punch hole (710) are the two punch hole (79).

2. A butterfly valve in accordance with claim 1, wherein: the cotton ring (57) corresponds to the through hole (55), and the cotton ring (57) is sleeved on the surface of the screw rod (46).

3. A butterfly valve in accordance with claim 2, wherein: inclined planes are arranged on the side walls of one side, close to the conical blocks (62), of the two clamping plates (64).

4. A butterfly valve according to claim 3, characterized in that: u-shaped piece (73) and valve block (23) are corresponding, the interval of U-shaped piece (73) both sides inner wall is the same with the thickness of valve block (23).

5. The method of using a butterfly valve according to claim 4, wherein: the method comprises the following steps:

firstly, a rotary disc (49) is rotated to drive a screw rod (46) to rotate, the screw rod (46) pushes the inner wall of a threaded hole (45) when rotating, then the screw rod (46) moves, the moved screw rod (46) simultaneously pushes a bevel gear (43) to rotate, the bevel gear (43) drives a rotating shaft (21) to rotate when rotating, the rotating shaft (21) drives a valve plate (23) to rotate when rotating, the valve plate (23) is clamped on the inner wall of a ferrule (24), a channel of a pipeline (1) is closed through the valve plate (23) and the ferrule (24), a square tube (32) is driven to rotate when the valve plate (23) rotates, the square tube (32) drives an internal threaded square tube (38) to rotate, the inner wall of the threaded square tube (38) extrudes a threaded rod (35), then the threaded square tube (38) is pushed to move through the threaded rod (35), the upper end and the lower end of the threaded square tube (38) are separated through a sealing ring (36) inside the threaded square tube (38), when the threaded tube (38) moves upwards, gas inside the square tube (32) enters a connecting tube (31), and a plurality of connecting tubes (311) pushes a plurality of pistons (311) to move through two connecting holes (311), further, a gap between the valve plate (23) and the ferrule (24) is blocked, so that a channel in the pipeline (1) is sealed, and the problem that the pipeline (1) cannot be sealed due to abrasion of the valve plate (23) is prevented;

the second part is that when the screw (46) rotates, the screw (46) moves in the sleeve (48), the outer wall of the screw (46) is in contact with the cotton ring (57), the push plate (54) is pushed by the thrust spring (53) to extrude lubricating oil in the oil box (51), so that the lubricating oil is injected into the cotton ring (57) through the through hole (55), the moving screw (46) is oiled through the cotton ring (57), the surface of the screw (46) is maintained through the lubricating oil, and the surface of the screw (46) is prevented from rusting and inconvenient rotation;

thirdly, after the valve plate (23) is clamped and sealed with the ferrule (24), the conical block (62) is pressed, the two clamping plates (64) are extruded through the conical surface of the conical block (62), and then the two clamping plates (64) move towards two sides and are respectively clamped in the two clamping grooves (66), so that the screw rod (46) is fixed and cannot rotate, and further the phenomenon that the valve plate (23) is driven to rotate by the rotation of the screw rod (46) to cause the closing failure due to the error operation is prevented;

the fourth step, rotate rotor plate (78) at last and drive screw thread post (75) and rotate, the inner wall of surface extrusion screw (74) through screw thread post (75), and then drive U-shaped piece (73) through screw (74) and remove, it is inside that the both ends that make U-shaped piece (73) pass through perforation (711) on lasso (24) insert lasso (24), make U-shaped piece (73) block on the both sides lateral wall of valve block (23), and then prevent that valve block (23) from rotating and leading to pipeline (1) sealed inefficacy.