CN217874227U - Bidirectional soft sealing butterfly valve - Google Patents

Abstract

The utility model provides a two-way soft seal butterfly valve relates to butterfly valve technical field, including valve body and butterfly plate, four disk seats are installed to the arc surface of valve body, the inside of valve body is provided with the valve pocket, the butterfly plate sets up in the valve pocket of valve body with the help of the valve rod, one side interference of butterfly plate is connected with the elasticity sealing washer, the outside of sealing washer is equipped with the clamp plate circle, the clamp plate circle is on the butterfly plate with the help of bolt fixed connection, the sealing washer is on the butterfly plate with the help of clamp plate circle butt, the inboard of valve body is equipped with the cross section and is trapezoidal annular convex part, the medial surface of annular convex part comprises preceding inclined plane A, well inclined plane B and back inclined plane C, the lateral surface that the sealing washer is close to annular convex part is curved evagination face, the outer convex surface of sealing washer and the well inclined plane B looks butt of annular convex part. The utility model discloses, the problem of seal structure design unreasonable or seal assembly ageing not in time changing has been solved.

Description

Bidirectional soft sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field especially relates to a two-way soft sealing butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.

The problem of revealing appears easily after current butterfly valve uses a period, and the position of revealing is the junction of butterfly plate and valve body and valve rod and valve body, and its leading cause lies in, and seal structure design is unreasonable or seal assembly is ageing not in time changed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that has the unreasonable or ageing not in time changing of seal structure design among the prior art of seal structure design, and the two-way soft seal butterfly valve who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a two-way soft seal butterfly valve, includes valve body and butterfly plate, four disk seats are installed to the arc surface of valve body, the inside of valve body is provided with the valve pocket, the butterfly plate sets up in the valve pocket of valve body with the help of the valve rod, one side interference of butterfly plate is connected with the elasticity sealing washer, the outside of sealing washer is equipped with the clamp plate circle, the clamp plate circle is with the help of bolt fixed connection on the butterfly plate, the sealing washer is on the butterfly plate with the help of clamp plate circle butt, the inboard of valve body is equipped with the cross section and is trapezoidal annular convex part, the medial surface of annular convex part comprises preceding inclined plane, well inclined plane and back inclined plane, the lateral surface that the sealing washer is close to annular convex part is curved evagination face, the outer convex surface of sealing washer and the well inclined plane looks butt of annular convex part.

Preferably, first bulge loop is installed in the outside of butterfly plate, the interference is connected with first draw-in groove on the butterfly plate in the first bulge loop outside, first draw-in groove is the annular, the sealing washer cover is in the first bulge loop outside and the inside of card at annular first draw-in groove, the second bulge loop is installed in the outside of first bulge loop, the second draw-in groove is installed in the outside of sealing washer, the second draw-in groove is the annular, the clamp plate snare is in the second bulge loop outside and card in the second draw-in groove.

Preferably, the front inclined surface and the middle inclined surface of the annular convex part and the connection part of the middle inclined surface and the rear inclined surface are both chamfered or chamfered.

Preferably, the top of valve body is installed the upper flange, the upper end fixedly connected with support of upper flange, the lower flange is installed to the bottom of valve body, the bottom of lower flange is with the help of bolt fixedly connected with lower end cover, the valve rod includes valve rod and lower valve rod, go up the valve rod cup joint in the upper flange, go up the valve rod and have seted up the packing groove between the flange inner wall, the top in packing groove is with the help of bolt fixedly connected with packing closing cap, the inside in packing groove is equipped with a plurality of packing pad, and O type circle is installed to a plurality of packing pad adjacent position, packing closing cap interference connection is on the packing pad of upper end, the lower valve rod cup joints in the lower flange, the valve rod groove has been seted up on the lower end cover, the lower valve rod cup joints in the valve rod inslot, be equipped with split ring groove and seal ring groove in the lower flange, install the split ring in the split ring inslot, the split ring joint is on the lower valve rod, seal ring inslot installs polytetrafluoroethylene seal ring, polytetrafluoroethylene seal ring interference is connected between lower flange and lower end cover.

Preferably, four two liang of a set of, two sets of every two sets of disk seats one side that the disk seat is close to each other is equipped with spacing subassembly, spacing subassembly includes the locating plate, locating plate sliding connection is at the upper surface of two sets of disk seats, the lower surface middle part fixedly connected with connecting strip of locating plate, the equal fixedly connected with card pipe in four corners position of connecting strip, fixed surface is connected with spring A on the inside of card pipe, spring A's lower extreme fixedly connected with locating pin, the locating pin slides and runs through the disk seat, the lower fixed surface of connecting strip is connected with the mounting panel, the mounting panel is kept away from one side of connecting strip and is installed the double faced adhesive tape.

Preferably, the spring A is internally provided with a telescopic rod, and the upper end and the lower end of the telescopic rod are respectively fixedly connected with the clamping pipe and the positioning pin.

Preferably, the lower end of the positioning pin is fixedly connected with an arc block, and the arc surface of the arc block is polished.

Preferably, the four corners of the positioning plate are slidably inserted with positioning rods, each four positioning rods are in a group, the upper ends of the positioning rods in the same group are fixedly connected with a connecting plate, and elastic pieces are fixedly connected between the connecting plate and the positioning plate.

Preferably, the arc surface of valve body is equipped with locating component, locating component includes two lantern rings, two the lantern ring is all overlapped on the arc surface of valve body, the even three locating rack of fixedly connected with of arc surface of the lantern ring, the cross-section of locating rack is "L" shape, two the lantern ring is close to the equal fixedly connected with fixed plate in one side each other, two the equal fixedly connected with arm-tie in one side that the fixed plate is close to each other, two the one side fixedly connected with spring B that the arm-tie is close to each other, spring B's inside is provided with the guide bar, the both ends of guide bar slide respectively and run through two arm-ties.

Preferably, the surface of the long arm end of the positioning frame is fixedly connected with a pulley, and the size of the pulley is slightly smaller than the long arm end of the positioning frame.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model discloses in, through setting up the valve body, when the butterfly valve is closed, the sealing washer keeps the compression state, the outer convex surface of sealing washer and the well inclined plane contact of annular convex part, the butterfly plate is discoid, rotate the in-process at the valve rod, the sealing washer on the valve rod wherein one side butterfly plate can the preceding inclined plane A of contact slowly compress to well inclined plane earlier, the sealing washer on the opposite side butterfly plate then can contact earlier the back inclined plane slowly compress to well inclined plane, thereby accomplish closing of butterfly valve, wherein the pressure equipment is between butterfly plate and clamp plate circle behind the sealing washer overall positioning, the leakproofness is better, preceding inclined plane and well inclined plane and the junction of back inclined plane have all fallen fillet or the straight angle and have reached the smooth movement who makes things convenient for the sealing washer, wherein bolt pretension gland extrusion packing pad and O type circle realize sealing.

2. The utility model discloses in, through setting up spacing subassembly, after having connected valve body and external pipeline, when needs install the valve body on the wall, stimulate the connecting plate earlier, make the connecting plate drive the locating lever and remove, the shell fragment is in by tensile state this moment, then slide in locating plate and connecting strip between two sets of disk seats, when sliding location board, the locating pin receives the extrusion of disk seat and can withdraws in the card pipe, spring A is in by compression state this moment, continue to remove the locating plate, make the locating plate continue the surface slip along the disk seat, after sliding to suitable position, spring B can give locating pin elasticity, make the locating pin card in the hole of disk seat, reached and fixed the effect on four disk seats with the locating plate fast, loosen the connecting plate this moment, the shell fragment can give the connecting plate pulling force, make the connecting plate drive the locating lever insert one side at the disk seat, the effect of further stabilizing locating plate and disk seat has been reached, can directly install the valve body on the wall with the help of double faced adhesive tape this moment, through setting up limit structure, reached and exempted from the formula of punching with the valve body spacing on the wall, the practicality of valve body use is improved.

3. The utility model discloses in, through setting up the circular arc piece, the arc surface of circular arc piece through the polishing processing of polishing have reached reduce the locating pin and the mounting panel between the effect of frictional force, and then conveniently promote the locating plate more with the installation effect together between locating plate and the disk seat.

4. The utility model discloses in, through setting up locating component, when being linked together with the valve pocket of valve body on needs will connect external piping erection to the valve body, press two arm-tie earlier, make two arm-tie remove to the direction that is close to each other, spring B is in compressed state this moment, at this in-process, the lantern ring can slide along the arc surface of valve body, then put external piping at the valve body position, directly loosen the arm-tie this moment, spring B can give two arm-tie elasticity, make two arm-ties remove and slide along the arc surface of guide bar to the direction of keeping away from each other, the guide bar has played the effect of carrying out the restriction to the arm-tie shift position, three locating rack can stretch out from the one end of valve body simultaneously this moment, the pulley can with external piping direct contact, detain external piping, the effect of carrying out quick location between supplementary external piping and the valve body has been reached, can directly aim at external piping displacement to the valve body with the help of the pulley this moment, install external piping on the valve body.

Drawings

Fig. 1 is a schematic perspective view of the bidirectional soft seal butterfly valve of the present invention;

fig. 2 is a right side view of the bidirectional soft sealing butterfly valve of the present invention shown in fig. 1;

fig. 3 is a cross-sectional view of the butterfly valve 1 with a bidirectional soft seal according to the present invention;

fig. 4 is an enlarged view of a point a of fig. 3 of the bidirectional soft sealing butterfly valve provided by the present invention;

fig. 5 is an enlarged view of the point B of fig. 3 of the bidirectional soft sealing butterfly valve provided by the present invention;

fig. 6 is an enlarged view of the point C of fig. 3 of the bidirectional soft sealing butterfly valve of the present invention;

fig. 7 is a schematic structural view of a two-way soft seal butterfly valve limiting assembly according to the present invention;

fig. 8 is a schematic structural view of the bidirectional soft seal butterfly valve shown below fig. 7 according to the present invention;

fig. 9 is a schematic view of the internal structure of a clamping tube of a bidirectional soft sealing butterfly valve according to the present invention;

fig. 10 is a schematic structural view of the positioning assembly of the bidirectional soft seal butterfly valve according to the present invention;

fig. 11 is an enlarged view of the position D of the bidirectional soft sealing butterfly valve fig. 10 according to the present invention.

Illustration of the drawings: 1. a valve body; 2. a butterfly plate; 2A, a first convex ring; 2B, a first card slot; 2C, a second convex ring; 3. a valve stem; 3A, an upper valve rod; 3B, a lower valve rod; 4. a seal ring; 4A, a second clamping groove; 5. a platen ring; 6. an annular boss; 6A, a front inclined surface; 6B, a middle inclined plane; 6C, a rear inclined surface; 7. an upper flange; 8. a support; 9. a lower flange; 10. a lower end cover; 11. filling and sealing; 12. a filler pad; 13. an O-shaped ring; 14. opening the ring; 15. a polytetrafluoroethylene sealing gasket; 16. a valve seat; 17. positioning a plate; 18. a connecting strip; 19. clamping the pipe; 20. a spring A; 21. positioning pins; 22. mounting a plate; 23. double-sided adhesive tape; 24. a telescopic rod; 25. an arc block; 26. positioning a rod; 27. a connecting plate; 28. a spring plate; 29. a collar; 30. a positioning frame; 31. a fixing plate; 32. pulling a plate; 33. a spring B; 34. a guide bar; 35. a pulley.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1-11, the utility model provides a two-way soft seal butterfly valve, including valve body 1 and butterfly plate 2, four disk seats 16 are two liang a set of, and one side that two sets of disk seats 16 are close to each other is equipped with spacing subassembly, and the arc surface of valve body 1 is equipped with locating component.

The specific arrangement and function of the valve body 1, the limiting assembly and the positioning assembly are described in detail below.

As shown in fig. 2 to 6, four valve seats 16 are installed on an arc surface of a valve body 1, a valve cavity is arranged inside the valve body 1, a butterfly plate 2 is arranged in the valve cavity of the valve body 1 through a valve rod 3, an elastic sealing ring 4 is connected to one side of the butterfly plate 2 in an interference fit manner, a pressing plate ring 5 is arranged on the outer side of the sealing ring 4, the pressing plate ring 5 is fixedly connected to the butterfly plate 2 through a bolt, the sealing ring 4 abuts against the butterfly plate 2 through the pressing plate ring 5, an annular convex portion 6 with a trapezoidal cross section is arranged on the inner side of the valve body 1, the inner side surface of the annular convex portion 6 is composed of a front inclined surface 6A, a middle inclined surface 6B and a rear inclined surface 6C, the outer side surface of the sealing ring 4, which is close to the annular convex portion 6, is an arc-shaped outer convex surface, and the outer convex surface of the sealing ring 4 abuts against the middle inclined surface 6B of the annular convex portion 6. First bulge loop 2A is installed in the outside of butterfly plate 2, the interference is connected with first draw-in groove 2B on the butterfly plate 2 in the first bulge loop 2A outside, first draw-in groove 2B is the annular, sealing washer 4 covers in the first bulge loop 2A outside and blocks in the inside of annular first draw-in groove 2B, second bulge loop 2C is installed in first bulge loop 2A's the outside, second draw-in groove 4A is installed in the outside of sealing washer 4, second draw-in groove 4A is the annular, 5 covers in the second bulge loop 2C outside and blocks in second draw-in groove 4A in the clamp plate circle. The front inclined surface 6A and the middle inclined surface 6B of the annular convex part 6 and the joints of the middle inclined surface 6B and the rear inclined surface 6C are rounded or chamfered. An upper flange 7 is installed at the top of a valve body 1, an upper end fixedly connected with support 8 of the upper flange 7, a lower flange 9 is installed at the bottom of the valve body 1, a lower end cover 10 is fixedly connected to the bottom of the lower flange 9 through bolts, a valve rod 3 comprises an upper valve rod 3A and a lower valve rod 3B, the upper valve rod 3A is sleeved in the upper flange 7, a packing groove is formed between the inner wall of the upper valve rod 3A and the inner wall of the upper flange 7, a packing sealing cover 11 is fixedly connected to the top end of the packing groove through bolts, a plurality of packing gaskets 12 are arranged inside the packing groove, O-shaped rings 13 are installed at adjacent positions of the packing gaskets 12, the packing sealing cover 11 is in interference connection with the packing gaskets 12 at the uppermost end, the lower valve rod 3B is sleeved in the lower flange 9, a valve rod 3 groove is formed in the lower end cover 10, the lower valve rod 3B is sleeved in the valve rod 3 groove, split ring grooves and split ring grooves are formed in the lower flange 9, split rings 14 are installed in the split ring grooves, the split rings 14 are clamped on the lower end of the lower flange 9, polytetrafluoroethylene rings 15 are in interference connection between the lower flange 9 and the lower end cover 10.

The effect that its whole valve body 1 reached does, through setting up valve body 1, when the butterfly valve was closed, sealing washer 4 keeps compression state, the evagination face of sealing washer 4 and the well inclined plane 6B contact of annular convex part 6, butterfly plate 2 is discoid, in valve rod 3 rotation in-process, sealing washer 4 on one side butterfly plate 2 among them of valve rod 3 can contact preceding inclined plane 6A slowly compress to well inclined plane 6B earlier, sealing washer 4 on the opposite side butterfly plate 2 then can contact back inclined plane 6C earlier and slowly compress to well inclined plane 6B, thereby accomplish closing of butterfly valve, wherein the pressure equipment after the sealing washer 4 overall positioning is between butterfly plate 2 and clamp plate circle 5, the leakproofness is better, preceding inclined plane 6A and well inclined plane 6B and the junction of well inclined plane 6B and back inclined plane 6C all have fallen down the fillet or the parallel angle has reached the smooth migration that makes things convenient for sealing washer 4, wherein bolt pretension packing gland extrusion packing pad 12 and O13 realize sealed type circle.

As shown in fig. 7 to 9, the limiting assembly includes a positioning plate 17, the positioning plate 17 is slidably connected to the upper surfaces of the two sets of valve seats 16, a connecting strip 18 is fixedly connected to the middle of the lower surface of the positioning plate 17, a clamping tube 19 is fixedly connected to the four corners of the connecting strip 18, a spring a20 is fixedly connected to the inner upper surface of the clamping tube 19, a positioning pin 21 is fixedly connected to the lower end of the spring a20, the positioning pin 21 slidably penetrates through the valve seats 16, a mounting plate 22 is fixedly connected to the lower surface of the connecting strip 18, and a double-faced adhesive tape 23 is installed on one side, away from the connecting strip 18, of the mounting plate 22. An expansion link 24 is arranged in the spring A20, and the upper end and the lower end of the expansion link 24 are respectively fixedly connected with the clamping tube 19 and the positioning pin 21. The lower end of the positioning pin 21 is fixedly connected with an arc block 25, and the arc surface of the arc block 25 is polished. Positioning rods 26 are slidably inserted into four corners of the positioning plate 17, each two of the four positioning rods 26 form a group, a connecting plate 27 is fixedly connected to the upper ends of the positioning rods 26 in the same group, and elastic pieces 28 are fixedly connected between the connecting plate 27 and the positioning plate 17.

The effect that its whole spacing subassembly reaches does, through setting up spacing subassembly, after having connected valve body 1 with external pipeline, when needs install valve body 1 on the wall, stimulate connecting plate 27 earlier, make connecting plate 27 drive locating lever 26 remove, shell fragment 28 is in by the tensile state this moment, then with locating plate 17 and connecting strip 18 along sliding in between two sets of disk seats 16, when sliding locating plate 17, locating pin 21 receives the extrusion of disk seat 16 and can withdraws in card pipe 19, spring A20 is in by the compression state this moment, continue to move locating plate 17, make locating plate 17 continue to slide along the surface of disk seat 16, after sliding to suitable position, spring B33 can give locating pin 21 elasticity, make locating pin 21 block in the hole of disk seat 16, reached and fixed the effect on four disk seats 16 with locating plate 17 fast, loosen connecting plate 27 this moment, shell fragment 28 can give connecting plate 27 pulling force this moment, make connecting plate 27 drive locating lever 26 one side of disk seat 16, the effect of further stabilizing locating plate 17 and disk seat 16 has been reached, can directly install valve body 1 on the help of double faced adhesive tape 23 this moment, reach spacing formula structure, spacing formula 1 improvement on the wall, the practicality of using exempts from on the wall. Through setting up arc piece 25, the arc surface of arc piece 25 has reached the effect that reduces locating pin 21 frictional force between with mounting panel 22 through polishing the processing of polishing, and then more conveniently promotes locating plate 17 with the installation effect together between locating plate 17 and the disk seat 16.

As shown in fig. 10 and 11, the positioning assembly includes two lantern rings 29, two lantern rings 29 all overlap on the arc surface of valve body 1, the three locating rack 30 of the even fixedly connected with of arc surface of lantern ring 29, the cross-section of locating rack 30 is "L" shape, the equal fixedly connected with fixed plate 31 in one side that two lantern rings 29 are close to each other, the equal fixedly connected with arm-tie 32 in one side that two fixed plates 31 are close to each other, the one side fixedly connected with spring B33 that two arm-tie 32 are close to each other, the inside of spring B33 is provided with guide bar 34, two ends of guide bar 34 slide respectively and run through two arm-ties 32. The surface of the long arm end of the positioning frame 30 is fixedly connected with a pulley 35, and the size of the pulley 35 is slightly smaller than the long arm end of the positioning frame 30.

The effect that its whole locating component reaches does, through setting up locating component, when need be linked together with the valve pocket of valve body 1 on installing external pipeline to valve body 1, press two arm-plates 32 earlier, make two arm-plates 32 move to the direction that is close to each other, spring B33 is in by compression state this moment, in this process, lantern ring 29 can slide along the arc surface of valve body 1, then put external pipeline in valve body 1 position, directly loosen arm-plates 32 this moment, spring B33 can give two arm-plates 32 elasticity, make two arm-plates 32 move to the direction of keeping away from each other and slide along the arc surface of guide bar 34, guide bar 34 has played the effect of carrying out the restriction to arm-plates 32 shift position, three locating rack 30 can stretch out from the one end of valve body 1 simultaneously this moment, pulley 35 can with external pipeline direct contact, detain external pipeline, the effect of carrying out quick location between supplementary external pipeline and valve body 1 has been reached, can directly aim at external pipeline on valve body 1 with the help of pulley 35 with external pipeline removal this moment, install external pipeline on valve body 1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a two-way soft seal butterfly valve, includes valve body (1) and butterfly plate (2), its characterized in that: four disk seats (16) are installed to the arc surface of valve body (1), the inside of valve body (1) is provided with the valve pocket, butterfly plate (2) set up in the valve pocket of valve body (1) with the help of valve rod (3), one side interference connection of butterfly plate (2) has elastic sealing ring (4), the outside of sealing ring (4) is equipped with clamp plate circle (5), clamp plate circle (5) are with the help of bolt fixed connection on butterfly plate (2), sealing ring (4) are with the help of clamp plate circle (5) butt on butterfly plate (2), the inboard of valve body (1) is equipped with cross section for trapezoidal annular convex part (6), the medial surface of annular convex part (6) comprises preceding inclined plane (6A), well inclined plane (6B) and back inclined plane (6C), the lateral surface that sealing ring (4) are close to annular convex part (6) is curved evagination face, the evagination face of the outer convex face of sealing ring (4) and well inclined plane (6B) looks butt of annular convex part (6).

2. The bidirectional soft seal butterfly valve of claim 1, wherein: first bulge loop (2A) is installed in the outside of butterfly plate (2), the interference is connected with first draw-in groove (2B) on butterfly plate (2) in the first bulge loop (2A) outside, first draw-in groove (2B) is the annular, sealing washer (4) cover is in the inside of first draw-in groove (2B) in first bulge loop (2A) outside and card, second bulge loop (2C) are installed in the outside of first bulge loop (2A), second draw-in groove (4A) are installed in the outside of sealing washer (4), second draw-in groove (4A) are the annular, clamp plate circle (5) cover is in second bulge loop (2C) outside and card in second draw-in groove (4A).

3. The bidirectional soft seal butterfly valve of claim 1, wherein: the front inclined surface (6A) and the middle inclined surface (6B) of the annular convex part (6) and the joints of the middle inclined surface (6B) and the rear inclined surface (6C) are both chamfered or straight.

4. A bi-directional soft seal butterfly valve according to claim 3, wherein: an upper flange (7) is installed at the top of the valve body (1), an upper end fixedly connected with support (8) of the upper flange (7), a lower flange (9) is installed at the bottom of the valve body (1), a lower end cover (10) is fixedly connected with the bottom of the lower flange (9) by means of bolts, the valve rod (3) comprises an upper valve rod (3A) and a lower valve rod (3B), the upper valve rod (3A) is sleeved in the upper flange (7), a packing groove is formed between the inner walls of the upper valve rod (3A) and the upper flange (7), the top end of the packing groove is fixedly connected with a packing sealing cover (11) by means of bolts, a plurality of packing gaskets (12) are arranged inside the packing groove, O-shaped rings (13) are installed at the adjacent positions of the plurality of packing gaskets (12), the packing sealing cover (11) is in interference connection on the packing gasket (12) at the uppermost end, the lower valve rod (3B) is sleeved in the lower flange (9), a valve rod (3) groove is formed in the lower end cover (10), a split joint ring groove (14) is formed in the valve rod (3) and a split joint ring groove (14) is installed in the split joint of the polytetrafluoroethylene sealing ring (14), the polytetrafluoroethylene sealing washer (15) is in interference connection between the lower flange (9) and the lower end cover (10).

5. The bidirectional soft seal butterfly valve of claim 1, wherein: four two liang of disk seats (16) are a set of, two sets of one side that disk seats (16) are close to each other is equipped with spacing subassembly, spacing subassembly includes locating plate (17), locating plate (17) sliding connection is at the upper surface of two sets of disk seats (16), the lower surface middle part fixedly connected with connecting strip (18) of locating plate (17), the equal fixedly connected with card pipe (19) in four corners position of connecting strip (18), fixed surface is connected with spring A (20) on the inside of card pipe (19), the lower extreme fixedly connected with locating pin (21) of spring A (20), locating pin (21) slide and run through disk seats (16), the lower fixed surface of connecting strip (18) is connected with mounting panel (22), one side that connecting strip (18) were kept away from in mounting panel (22) is installed double faced adhesive tape (23).

6. The bidirectional soft seal butterfly valve of claim 5, wherein: the spring A (20) is internally provided with a telescopic rod (24), and the upper end and the lower end of the telescopic rod (24) are fixedly connected with the clamping pipe (19) and the positioning pin (21) respectively.

7. The bidirectional soft seal butterfly valve of claim 5, wherein: the lower extreme fixedly connected with circular arc piece (25) of locating pin (21), the arc surface of circular arc piece (25) is through polishing the processing of polishing.

8. The bidirectional soft seal butterfly valve of claim 5, wherein: positioning rods (26) are slidably inserted into four corners of the positioning plate (17), every two of the four positioning rods (26) are in a group, a connecting plate (27) is fixedly connected to the upper end of each positioning rod (26) in the same group, and an elastic sheet (28) is fixedly connected between each connecting plate (27) and the positioning plate (17).

9. The bidirectional soft seal butterfly valve of claim 1, wherein: the arc surface of valve body (1) is equipped with locating component, locating component includes two lantern rings (29), two lantern ring (29) all overlap on the arc surface of valve body (1), the three locating rack (30) of the even fixedly connected with of arc surface of the lantern ring (29), the cross-section of locating rack (30) is "L" shape, two the equal fixedly connected with fixed plate (31) in one side that lantern ring (29) are close to each other, two the equal fixedly connected with arm-tie (32) in one side that fixed plate (31) are close to each other, two one side fixedly connected with spring B (33) that arm-tie (32) are close to each other, the inside of spring B (33) is provided with guide bar (34), the both ends of guide bar (34) slide respectively and run through two arm-ties (32).

10. The bidirectional soft seal butterfly valve of claim 9, wherein: the long arm end surface of locating rack (30) is fixedly connected with pulley (35), the size of pulley (35) slightly is less than the long arm end of locating rack (30).

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