CN113915354A

CN113915354A - Butterfly valve and use method thereof

Info

Publication number: CN113915354A
Application number: CN202111325740.9A
Authority: CN
Inventors: 夏方飞
Original assignee: Individual
Current assignee: Bip Palo Luo Jiangsu Engineering Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-01-11
Anticipated expiration: 2041-11-10
Also published as: CN113915354B

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, the invention drives a square tube to rotate through the rotation of a valve plate, the square tube drives a threaded square tube inside to rotate, the inner wall of the threaded square tube extrudes a threaded rod, then 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 a sealing ring inside the threaded square tube, when the threaded square tube moves upwards, the gas inside the square tube is pushed to enter a cavity through a connecting tube, the 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 a ferrule through a plurality of pistons, further, a gap between the valve plate and the ferrule is blocked, so that a channel in the pipeline 1 is sealed, the valve plate 23 is prevented from being worn to cause the pipeline to be incapable of sealing.

Description

Butterfly valve and use 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 being convenient and rapid to open and close, labor-saving, small in fluid resistance, and capable of being operated frequently, mud can be conveyed, and the minimum liquid is accumulated at a pipeline port, but the butterfly valve also has the defects of small use pressure and working temperature range when in use, and poor in sealing performance.

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 problems 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 in a circular groove, the circular groove is formed in the upper surface of a fixed block, the fixed 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 upper surface of the threaded rod and are respectively clamped in two ring clamping grooves, the two ring clamping grooves are symmetrically formed in the inner wall of a threaded square cylinder, the threaded square cylinder is in threaded connection with the inside of the threaded rod, two ends of the connecting pipe are respectively communicated with two cavities, the two cavities are symmetrically formed in the valve block, a plurality of connecting holes are symmetrically formed in the inner walls of the two cavities, and pistons are inserted in the connecting holes, it is a plurality of inside the other end of piston all extends to the annular, it is a plurality of the piston is fixed connection respectively on the surface of two sealing strips, two the sealing strip symmetry joint is inside the annular.

The adjusting mechanism comprises an adjusting seat, the adjusting seat is fixedly connected to the outer wall of the upper end of the pipeline, a jack is formed in the lower end of each adjusting seat, a rotating shaft is inserted into the jack, a helical gear is fixedly connected to the surface of the upper end of the rotating shaft in a sleeved mode, the helical gear is connected to the inside of a rotating groove, the rotating groove is communicated with a threaded hole, the threaded hole is horizontally arranged in the adjusting seat, a screw rod is connected to the internal thread of the threaded hole in a threaded mode, the screw rod is meshed with the helical gear, one end of the screw rod is inserted into a protecting cylinder, the other end of the screw rod is inserted into a sleeve, the protecting cylinder is fixedly connected to the surface of the adjusting seat in a symmetrical mode through the sleeve, and a rotary disc is fixedly connected to one end of the 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, the safety mechanism comprises two safety seats, the two safety seats are symmetrically embedded on the side walls of two sides of the pipeline, U-shaped grooves are formed in the two safety seats, U-shaped blocks are clamped in the two U-shaped grooves, screw holes are formed in the centers of the two U-shaped blocks, threaded columns are in threaded connection with the insides of the two screw holes, the two threaded columns are rotatably connected to the inner walls of the two U-shaped grooves through two bearings respectively, the other ends of the two threaded columns extend to the outside of the safety seats through round holes, the two round holes are formed in the inner walls of the two U-shaped grooves respectively, two rotating pieces are symmetrically and fixedly connected to the surfaces of the two threaded columns, sleeve rings are movably sleeved on the surfaces of two ends of the two U-shaped blocks, the four sleeve rings are respectively clamped in the four fixing grooves, the four fixing grooves are formed in the inner walls of two ends of the two U-shaped grooves respectively, two ends of the two U-shaped blocks are respectively inserted into the four through holes, and the four through holes are respectively arranged on the side walls of the two ends of the ferrule.

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 of one side, close to the conical block, of each of the two clamping plates.

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

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

the first step, firstly, the turntable is rotated to drive the screw rod to rotate, the inner wall of the threaded hole is pushed when the screw rod rotates, then the screw rod moves, the moving screw rod simultaneously pushes the helical gear to rotate, the helical gear drives the rotating shaft to rotate when rotating, the valve block is driven to rotate when the rotating shaft rotates, so that the valve block is clamped on the inner wall of the ferrule, the channel of the pipeline is closed through the valve block and the ferrule, the square tube is driven to rotate when the valve block rotates, the square tube drives the internal threaded square tube to rotate, the inner wall of the threaded square tube extrudes the threaded rod, then the threaded square tube is pushed by the threaded rod to move, the upper end and the lower end of the threaded square tube are separated by the sealing ring inside the threaded square tube, when the threaded square tube moves upwards, the gas inside the cavity enters the connecting hole to push the piston to move, and the two sealing strips are pushed by the plurality of pistons to be attached to the inner wall of the ferrule, further, the gap between the valve plate and the ferrule is blocked, so that the channel in the pipeline 1 is sealed, and the valve plate is prevented from being worn to cause the pipeline to be incapable of being sealed;

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, the conical block is pressed, the two clamping plates are extruded through the conical surface of the conical block, and then the two clamping plates move towards two sides and are respectively clamped in the two clamping grooves, so that the screw is fixed and cannot rotate, and the phenomenon that the valve block is driven to rotate by the rotation of the screw to cause the closing failure is prevented due to the error operation;

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 diagram 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 a portion B of the butterfly valve of FIG. 2 according to 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 cylinder; 48. a sleeve; 49. a turntable; 5. a lubrication 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. a slot; 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 (6) 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. 1-7, the butterfly valve of the present invention includes a pipe 1, a closing mechanism 2 is disposed inside the pipe 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 pipe 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 circumferential side wall of the valve plate 23, the valve plate 23 is clamped in the ferrule 24, the helical gear 43 drives the rotating shaft 21 to rotate when rotating, the rotating shaft 21 drives the valve plate 23 to rotate when rotating, the valve plate 23 is clamped on the inner wall of the ferrule 24, and the channel of the pipeline 1 is closed through the valve plate 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 cause the pipeline 1 to be incapable of sealing.

Specifically, the adjusting mechanism 4 includes an adjusting seat 41, the adjusting seat 41 is fixedly connected to the outer wall of the upper end of the pipeline 1, a jack 42 is formed at the lower end of each adjusting seat 41, a rotating shaft 21 is inserted into the jack 42, a helical gear 43 is fixedly sleeved on the surface of the upper end 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 formed inside the adjusting seat 41, a screw 46 is connected to the inner thread of the threaded hole 45, 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, a turntable 49 is fixedly connected to one end of the screw 46, the turntable 49 is rotated to drive the screw 46 to rotate, the inner wall of the threaded hole 45 is pushed when the screw 46 rotates, and the screw 46 moves, the moving screw 46 simultaneously pushes the helical gear 43 to rotate.

Specifically, 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, the inside of the oil box 51 is fixedly connected with a thrust spring 53, 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 snap rings 56, a cotton ring 57 is clamped between the two snap rings 56, as the screw 46 is rotated, the screw 46 moves inside the sleeve 48, the outer wall of the screw 46 comes into contact with the cotton ring 57, the push plate 54 is pushed by the push spring 53 to extrude the lubricating oil in the oil box 51, so that the lubricating oil is injected into the cotton ring 57 through the through hole 55, further, the moving screw 46 is oiled by the cotton ring 57, and the surface of the screw 46 is maintained by the lubricating oil, thereby preventing the surface of the screw 46 from rusting and inconvenient rotation.

Specifically, the fixing mechanism 6 includes a slot 61, the slot 61 is disposed at one end of the screw 46 located outside the sleeve 48, a conical block 62 is inserted inside the slot 61, two strip-shaped openings 63 are symmetrically disposed on an inner wall of the slot 61, clamping plates 64 are inserted inside the two strip-shaped openings 63, the same tension spring 65 is fixedly connected to a side wall of one side of the two clamping plates 64 close to each other, the two clamping plates 64 correspond to the plurality of clamping grooves 66, the plurality of clamping grooves 66 are annularly disposed on the inner wall of the slot 61, 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 by the conical surface of the conical block 62, so that the two engaging plates 64 move towards both sides to engage with the two engaging grooves 66, and the screw 46 is fixed and cannot rotate, thereby preventing the failure of the closing caused by the rotation of the screw 46 to drive the valve sheet 23 to rotate.

Specifically, the safety mechanism 7 includes two safety seats 71, the two safety seats 71 are symmetrically embedded on the side walls of the two sides of the pipeline 1, U-shaped grooves 72 are formed inside the two safety seats 71, U-shaped blocks 73 are respectively clamped inside the two U-shaped grooves 72, screw holes 74 are formed in the centers of the two U-shaped blocks 73, threaded columns 75 are respectively connected inside the two screw holes 74 in a threaded manner, the two threaded columns 75 are respectively rotatably connected to the inner walls of the two U-shaped grooves 72 through two bearings 76, the other ends of the two threaded columns 75 are respectively extended to the outside of the safety seats 71 through round holes 77, the two round holes 77 are respectively arranged on the inner walls of the two U-shaped grooves 72, two rotation pieces 78 are respectively and symmetrically and fixedly connected to the surfaces of the two threaded columns 75, sleeve rings 79 are movably sleeved on the surfaces of the two ends of the two U-shaped blocks 73, the four sleeve rings 79 are respectively clamped inside the four fixing grooves 710, four fixed slots 710 are seted up respectively on the inner wall at two U-shaped groove 72 both ends, the both ends of two U-shaped pieces 73 are pegged graft respectively inside four perforation 711, four perforation 711 are seted up respectively on the both ends lateral wall of lasso 24, it rotates rotor 78 and drives screw post 75 and rotate, the inner wall of surperficial extrusion screw 74 through screw post 75, 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 leading 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 rod 46, lubricating oil is injected into the cotton ring 57 through the through hole 55, and then the moving screw rod 46 is oiled through 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, the turntable 49 is rotated to drive the screw 46 to rotate, the screw 46 pushes the inner wall of the threaded hole 45 when rotating, then the screw 46 moves, the moving screw 46 simultaneously pushes the bevel gear 43 to rotate, the bevel gear 43 drives the rotating shaft 21 to rotate when rotating, the rotating shaft 21 drives the valve sheet 23 to rotate, so that the valve sheet 23 is clamped on the inner wall of the ferrule 24, the channel of the pipeline 1 is closed through the valve sheet 23 and the ferrule 24, the square tube 32 is driven to rotate when the valve sheet 23 rotates, 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, 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 the sealing ring 36 inside the threaded square tube 38, when the threaded square tube 38 moves upwards, the 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 hole 310 to push the piston 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, so that a gap between the valve plate 23 and the ferrule is blocked, 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 solved;

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 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 to close and fail due to the rotation of the screw rod 46 caused by error operation 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 illustrates and describes the principles, general features, and advantages of the present 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);

sealing mechanism (3) includes connecting pipe (31), connecting pipe (31) are inlayed and are established in the inside of valve block (23), fixed intercommunication has square pipe (32) on the lower extreme outer wall of connecting pipe (31), the lower extreme of square pipe (32) extends to valve block (23) outside and pegs graft inside circular slot (33), circular slot (33) are seted up on the upper surface of fixed block (34), fixed block (34) are inlayed and are established on the bottom lateral wall of pipeline (1), fixedly connected with threaded rod (35) on the bottom inner wall of circular slot (33), two sealing washer (36) have been cup jointed in the activity on the upper end surface of threaded rod (35), two sealing washer (36) joint is inside two ring groove (37) respectively, two ring groove (37) symmetry is seted up on the inner wall of screw thread square tube (38), screw thread square tube (38) threaded connection is inside threaded rod (35), the both ends of connecting pipe (31) are linked together, two with two cavity (39) respectively cavity (39) symmetry is seted up in the inside of valve block (23), two a plurality of connecting hole (310), a plurality of have been seted up to the symmetry on the inner wall of cavity (39) the inside of connecting hole (310) is all pegged graft and is had piston (311), and is a plurality of the other end of piston (311) all extends to inside annular (22), and is a plurality of piston (311) fixed connection is on the surface of two sealing strips (312) respectively, two sealing strip (312) symmetry joint is inside annular (22).

2. A butterfly valve in accordance with claim 1, wherein: 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), a jack (42) is formed in the lower end of the adjusting seat (41), a rotating shaft (21) is inserted into the jack (42), a helical gear (43) is fixedly sleeved on the upper end surface of the rotating shaft (21), the helical gear (43) is connected into a rotating groove (44), the rotating groove (44) is communicated with a threaded hole (45), the threaded hole (45) is horizontally formed in the adjusting seat (41), a screw (46) is connected to the internal thread of the threaded hole (45), 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), and the protecting cylinder (47) and the sleeve (48) are symmetrically and fixedly connected to the surface of the adjusting seat (41), one end of the screw rod (46) is fixedly connected with a rotary disc (49).

3. A butterfly valve in accordance with claim 1, wherein: lubricating mechanism (5) are including oil box (51), oil box (51) fixed intercommunication is on the lateral wall of sleeve (48), fixed intercommunication has oiling interface (52) on the outer wall of oil box (51), the inside fixedly connected with thrust spring (53) of oil box (51), the other end fixedly connected with push pedal (54) of thrust spring (53), through-hole (55) have been seted up on the other end outer wall of oil box (51), two snap rings (56) have been cup jointed, two to the symmetry fixed on the inner wall of sleeve (48) the joint has cotton ring (57) between snap ring (56).

4. A butterfly valve in accordance with claim 1, wherein: fixed establishment (6) are including slot (61), slot (61) are seted up and are located the outside one end of sleeve (48) at screw rod (46), it has awl piece (62) to peg graft in the inside of slot (61), two bar mouth (63), two have been seted up to the symmetry on the inner wall of slot (61) the inside of bar mouth (63) is all pegged graft and is had joint board (64), two on the one side lateral wall that joint board (64) are close to each other the same extension spring (65) of fixedly connected with, two joint board (64) are corresponding with a plurality of joint grooves (66) respectively, and are a plurality of joint groove (66) are the annular and set up on the inner wall of slot (61).

5. A butterfly valve in accordance with claim 1, wherein: the safety mechanism (7) comprises two safety seats (71), the two safety seats (71) are symmetrically embedded on the side walls of two sides of the pipeline (1), U-shaped grooves (72) are formed in the two safety seats (71), U-shaped blocks (73) are clamped in the two U-shaped grooves (72), screw holes (74) are formed in the centers of the two U-shaped blocks (73), threaded columns (75) are connected to the inner portions of the two screw holes (74) in a threaded manner, the two threaded columns (75) are respectively connected to the inner walls of the two U-shaped grooves (72) in a rotating manner through two bearings (76), the other ends of the two threaded columns (75) extend to the outer portions of the safety seats (71) through round holes (77), the two round holes (77) are respectively formed in the inner walls of the two U-shaped grooves (72), and two rotating pieces (78) are symmetrically and fixedly connected to the surfaces of the two threaded columns (75), two equal movable sleeve joint circle (79) of cup jointing on the surface at U-shaped piece (73) both ends, four cup joint circle (79) joint is inside four fixed slots (710) respectively, four fixed slot (710) are seted up respectively on the inner wall at two U-shaped groove (72) both ends, two the both ends of U-shaped piece (73) are pegged graft respectively inside four perforation (711), four perforation (711) are seted up respectively on the both ends lateral wall of lasso (24).

6. A butterfly valve in accordance with claim 3, 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).

7. A butterfly valve in accordance with claim 4, wherein: inclined planes are arranged on the side walls of one side, close to the conical blocks (62), of the two clamping plates (64).

8. A butterfly valve in accordance with claim 5, wherein: the U-shaped block (73) corresponds to the valve plate (23), and the distance between the inner walls of the two sides of the U-shaped block (73) is the same as the thickness of the valve plate (23).

9. A method of using a butterfly valve according to any of claims 1 to 8, characterized in that: 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 helical gear (43) to rotate, the helical gear (43) drives a rotating shaft (21) to rotate when rotating, the rotating shaft (21) drives a valve plate (23) to rotate when rotating, so that 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 pipe (32) is driven to rotate when the valve plate (23) rotates, the square pipe (32) drives an internal threaded square pipe (38) to rotate, the inner wall of the threaded square pipe (38) extrudes a threaded rod (35), then the threaded square pipe (38) is pushed to move through the threaded rod (35), and the upper end and the lower end of the threaded square pipe (38) are separated through a sealing ring (36) inside the threaded square pipe (38), when the threaded square tube (38) moves upwards, gas in the square tube (32) is pushed to enter the cavity (39) through the connecting tube (31), the gas in the cavity (39) enters the connecting hole (310) to push the piston (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 then 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 pipeline (1) cannot be sealed due to the fact that the valve plate (23) is abraded;

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 further 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 (78) at last and drive screw thread post (75) and rotate, the inner wall through the surperficial extrusion screw hole (74) of screw thread post (75), and then drive U-shaped piece (73) through screw hole (74) and remove, inside perforation (711) that make the both ends of U-shaped piece (73) pass through on lasso (24) inserted 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.