CN220168598U

CN220168598U - Butterfly valve

Info

Publication number: CN220168598U
Application number: CN202320820308.5U
Authority: CN
Inventors: 李文忠; 邵漳州
Original assignee: Yongjia Qingzhou Valve Fittings Co ltd
Current assignee: Yongjia Qingzhou Valve Fittings Co ltd
Priority date: 2023-04-08
Filing date: 2023-04-08
Publication date: 2023-12-12
Anticipated expiration: 2033-04-08

Abstract

The utility model discloses a butterfly valve, which comprises a valve body, a valve rod, a butterfly plate, a valve seat and a transmission mechanism, wherein the transmission mechanism is arranged on the valve body, the butterfly plate is connected to the valve rod and arranged in the valve body to be in sealing fit with the valve seat, the transmission mechanism is connected with the valve rod in a linkage way, the butterfly plate comprises a fixed seat, a sealing gasket, a sealing panel and a fixed plate, the sealing panel is arranged on the fixed seat to be in sealing tight fit with the valve seat, the sealing gasket is clamped between the sealing panel and the fixed seat, and the sealing panel is arranged on the fixed seat through bolts by the fixed plate. The utility model can facilitate the installation and the disassembly of the butterfly plate in the later period, simultaneously saves the material use of the butterfly plate and reduces the production cost of enterprises.

Description

Butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a butterfly valve.

Background

The butterfly valve is also called as a flap valve, and is a regulating valve with simple structure, and can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry and the like. The butterfly valve in the prior art adopts soft sealing or hard sealing structures, the butterfly plate and the hard sealing structures are easy to wear on the sealing surface after long-term use, the valve rod connected with the butterfly plate is required to be detached firstly during replacement, and then the butterfly plate is taken out for replacement, so that the operation is very inconvenient.

Disclosure of Invention

The utility model aims to provide the butterfly valve, which can facilitate the installation and the disassembly of the butterfly plate in the later period, save the material use of the butterfly plate and reduce the production cost of enterprises.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the butterfly valve comprises a valve body, a valve rod, a butterfly plate, a valve seat and a transmission mechanism, wherein the transmission mechanism is arranged on the valve body, the butterfly plate is connected with the valve rod and arranged in the valve body in a sealing fit with the valve seat, the transmission mechanism is connected with the valve rod in a linkage mode, the butterfly plate comprises a fixed seat, a sealing gasket, a sealing panel and a fixing plate, the sealing panel is arranged on the fixed seat in a sealing mode with the valve seat, the sealing gasket is clamped between the sealing panel and the fixed seat, and the fixing plate is arranged on the fixed seat through bolts with the sealing gasket and the sealing panel.

Through adopting above-mentioned technical scheme, split the butterfly plate among the prior art into fixing base, sealing panel and fixed plate, establish sealing gasket cover on the fixing base earlier during the installation, secondly compress tightly sealing panel at sealing gasket periphery, close sealing panel through the fixed plate lid, utilize the bolt to seal gasket, sealing panel lock on the fixing base, after long-term use sealing panel produces wearing and tearing with the seal structure firmly, only need demolish sealing panel with the bolt on the fixed panel, can take out the change, need not to take off the change with whole butterfly plate with the valve rod, saved the time of later maintenance greatly, the material use to the butterfly plate has been saved simultaneously, the manufacturing cost of enterprise has been reduced.

The utility model is further characterized in that the fixing seat is provided with a limiting convex column, the sealing panel is provided with a limiting hole, the sealing gasket is provided with an annular sealing column, and the annular sealing column is clamped between the limiting convex column and the limiting hole to form sealing fit.

Through adopting above-mentioned technical scheme, when sealed panel and hard seal support tightly each other and seal, annular seal post can promote sealed panel's elasticity and reply, promotes sealed panel's leakproofness, plays the effect that prevents the leakage simultaneously, avoids the medium to leak, reduces the wearing and tearing between sealed panel and the fixing base.

The utility model is further characterized in that a plurality of first mounting holes are formed in the fixing seat, a second mounting hole and a third mounting hole are respectively formed in the sealing gasket and the sealing panel, a fourth mounting hole is formed in the fixing plate in sequence, and the bolts sequentially penetrate through the fourth mounting hole, the third mounting hole and the second mounting hole and are locked on the first mounting hole.

Through adopting above-mentioned technical scheme, when later stage is changed sealing panel, only need demolish the bolt that one side is located the fixed plate, take out sealing panel and sealing pad promptly, overall structure is simple, installation and easy maintenance.

The utility model further provides that the annular sealing column is provided with a sealing flange, and the fixing plate is provided with a sealing groove matched with the sealing flange.

Through adopting above-mentioned technical scheme, prevent that the medium from leaking, utilize sealing flange and seal groove to support tight fit each other and install, strengthen holistic leakproofness.

The utility model further provides that the periphery of the sealing gasket is provided with a sealing surface which is matched with the valve seat in a sealing way, and the diameter of the periphery of the sealing surface is larger than that of the periphery of the fixing seat.

Through adopting above-mentioned technical scheme, adopt and be greater than the periphery diameter sealed face of fixing base, can form secondary seal with the mating surface of valve body inner wall, reduce the medium pressure when sealing panel and the seal of hard seal structure simultaneously, improved the leakproofness of valve simultaneously, strengthened life.

The valve is further characterized in that the valve body is provided with a mounting groove, a hard sealing ring is arranged in the mounting groove, the hard sealing ring is provided with supporting legs, a U-shaped elastic part and a sealing convex part, the valve seat is provided with a groove for mounting the supporting legs, the U-shaped elastic part is arranged in the mounting groove, and the sealing convex part extends towards one end of the fixing part.

Through adopting above-mentioned technical scheme, inlay and establish formula installation can improve the life of hard seal structure, overall structure is simple, and simple to operate.

The utility model further provides that the U-shaped elastic part is clamped with an elastic ring, one end of the elastic ring is tightly propped against one side of the U-shaped elastic part, and the other end of the elastic ring is tightly propped against the inner wall of the valve seat.

By adopting the technical scheme, the tension generated by the U-shaped elastic part during operation is reduced, elastic recovery is provided, and the service life of the whole structure is prolonged.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present utility model;

FIG. 2 is an enlarged view of the portion A of the present utility model;

fig. 3 is an enlarged view of the portion B of the present utility model.

In the figure: 1. a valve body; 2. a valve stem; 3. a butterfly plate; 4. a valve seat; 5. a transmission mechanism; 6. a fixing seat; 7. a sealing gasket; 8. a sealing panel; 9. a fixing plate; 10. limiting convex columns; 11. a limiting hole; 12. an annular seal column; 13. a first mounting hole; 14. a second mounting hole; 15. a third mounting hole; 16. a fourth mounting hole; 17. a sealing flange; 18. sealing grooves; 19. sealing surfaces; 20. a mounting groove; 21. a support leg; 22. a U-shaped elastic part; 23. a sealing protrusion; 24. an elastic ring; 25. and (5) a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: the butterfly valve comprises a valve body 1, a valve rod 2, a butterfly plate 3, a valve seat 4 and a transmission mechanism 5, wherein the transmission mechanism 5 is arranged on the valve body 1, the butterfly plate 3 is connected to the valve rod 2 and arranged in the valve body 1 to be in sealing fit with the valve seat 4, the transmission mechanism 5 is connected with the valve rod 2 in a linkage manner, the butterfly plate 3 comprises a fixed seat 6, a sealing gasket 7, a sealing panel 8 and a fixing plate 9, the sealing panel 8 is arranged on the fixed seat 6 and is in sealing arrangement with the valve seat 4, the sealing gasket 7 (made of rubber materials) is clamped between the sealing panel 8 and the fixed seat 6, the fixing plate 9 is used for installing the sealing gasket 7 and the sealing panel 8 on the fixed seat 6 through bolts (a plurality of bolts), the butterfly plate 3 in the prior art is split into the fixed seat 6, the sealing panel 8 and the fixing plate 9, the sealing gasket 7 is sleeved on the fixed seat 6, the sealing panel 8 is tightly pressed on the periphery of the sealing gasket 7, the sealing panel 8 is covered on the sealing panel 8 through the fixing plate 9, the sealing panel 8 is tightly arranged on the fixed seat 6 by the bolts, and the whole sealing panel 3 is not required to be replaced after the sealing panel is used for a long time, and the whole structure is replaced by the sealing panel 3 is replaced, and the sealing panel 3 is not required to be replaced, and the whole structure is greatly is replaced.

As shown in fig. 2, the fixing seat 6 is provided with a limiting convex column 10, the sealing panel 8 is provided with a limiting hole 11, the sealing gasket 7 is provided with an annular sealing column 12, the annular sealing column 12 is clamped between the limiting convex column 10 and the limiting hole 11 to form sealing fit (the inner peripheral surface of the annular sealing column 12 is attached to the outer peripheral surface of the limiting convex column 10, the outer peripheral surface of the annular sealing column 12 is attached to the inner peripheral surface of the limiting hole 11), when the sealing panel 8 and the hard seal are tightly abutted to each other for sealing, the annular sealing column 12 can promote elastic recovery of the sealing panel 8, improve the sealing performance of the sealing panel 8, simultaneously play a role in preventing leakage, avoid medium leakage, and reduce abrasion between the sealing panel 8 and the fixing seat 6.

As shown in fig. 2, the fixing seat 6 is provided with a plurality of first mounting holes 13 (corresponding to the number of bolts), the sealing gasket 7 and the sealing panel 8 are respectively provided with a second mounting hole 14 and a third mounting hole 15, the fixing plate 9 is provided with a fourth mounting hole 16 in sequence, the bolts sequentially penetrate through the fourth mounting hole 16, the third mounting hole 15 and the second mounting hole 14 to be locked on the first mounting hole 13, and only the bolts with one side positioned on the fixing plate 9 need to be removed when the sealing panel 8 is replaced in the later stage, namely, the sealing panel 8 and the sealing gasket 7 are taken out.

As shown in fig. 2, the annular sealing post 12 is provided with a sealing flange 17, the fixing plate 9 is provided with a sealing groove 18 matched with the sealing flange 17, so that medium leakage is prevented, and the sealing flange 17 and the sealing groove 18 are mutually in tight fit, so that the overall tightness is enhanced.

As shown in fig. 2, the outer periphery of the sealing gasket 7 is provided with a sealing surface 19 which is matched with the valve seat 4 in a sealing way, the outer peripheral diameter of the sealing surface 19 is larger than that of the fixed seat 6, and the sealing surface 19 which is larger than that of the fixed seat 6 is adopted to form secondary sealing with the matching surface of the inner wall of the valve body 1, so that the medium pressure when the sealing panel 8 is sealed with a hard sealing structure is reduced, the sealing performance of the valve is improved, and the service life of the valve is prolonged.

As shown in fig. 3, the valve body 1 is provided with a mounting groove 20, a hard sealing ring is arranged in the mounting groove 20, a supporting leg 21, a U-shaped elastic part 22 and a sealing convex part 23 are arranged on the hard sealing ring, a groove for mounting the supporting leg 21 is arranged on the valve seat 4, the U-shaped elastic part 22 is arranged in the mounting groove 20, the sealing convex part 23 extends towards one end of the fixed seat, and the embedded mounting can improve the service life of the hard sealing structure.

As shown in fig. 3, the U-shaped elastic portion 22 is provided with an elastic ring 24 (made of rubber), one end of the elastic ring 24 is tightly supported on one side of the U-shaped elastic portion 22, and the other end of the elastic ring is tightly supported on the inner wall of the valve seat 4, so that the tension generated by the U-shaped elastic portion 22 during operation is reduced, elastic recovery is provided, and the service life of the whole structure is prolonged.

Claims

1. The butterfly valve comprises a valve body (1), a valve rod (2), a butterfly plate (3), a valve seat (4) and a transmission mechanism (5), wherein the transmission mechanism (5) is arranged on the valve body (1), the butterfly plate (3) is connected to the valve rod (2) and arranged in the valve body (1) to be in sealing fit with the valve seat (4), and the transmission mechanism (5) is in linkage connection with the valve rod (2), and is characterized in that; the butterfly plate (3) comprises a fixed seat (6), a sealing gasket (7), a sealing panel (8) and a fixed plate (9), wherein the sealing panel (8) is arranged on the fixed seat (6) and is sealed with the valve seat (4), the sealing gasket (7) is clamped between the sealing panel (8) and the fixed seat (6), and the fixed plate (9) is used for installing the sealing gasket (7) and the sealing panel (8) on the fixed seat (6) through bolts.

2. A butterfly valve according to claim 1, wherein: be provided with spacing projection (10) on fixing base (6), be provided with spacing hole (11) on sealing panel (8), be provided with annular seal post (12) on sealed pad (7), annular seal post (12) clamp establish and form sealed cooperation between spacing projection (10) and spacing hole (11).

3. A butterfly valve according to claim 1, wherein: a plurality of first mounting holes (13) have been seted up on fixing base (6), second mounting hole (14) and third mounting hole (15) have been seted up respectively on sealed pad (7) and sealing panel (8), fourth mounting hole (16) have been seted up in proper order on fixed plate (9), the bolt passes fourth mounting hole (16), third mounting hole (15) and second mounting hole (14) locking in proper order on first mounting hole (13).

4. A butterfly valve according to claim 2, wherein: the annular sealing column (12) is provided with a sealing flange (17), and the fixing plate (9) is provided with a sealing groove (18) matched with the sealing flange (17).

5. A butterfly valve according to claim 1, wherein: the periphery of the sealing gasket (7) is provided with a sealing surface (19) which is matched with the valve seat (4) in a sealing way, and the peripheral diameter of the sealing surface (19) is larger than that of the fixing seat (6).

6. A butterfly valve according to claim 1, wherein: the valve is characterized in that the valve body (1) is provided with a mounting groove (20), a hard sealing ring is arranged in the mounting groove (20), a supporting foot (21), a U-shaped elastic part (22) and a sealing convex part (23) are arranged on the hard sealing ring, a groove for mounting the supporting foot (21) is arranged on the valve seat (4), the U-shaped elastic part (22) is arranged in the mounting groove (20), and the sealing convex part (23) extends towards one end of the fixed seat.

7. A butterfly valve according to claim 6, wherein: the U-shaped elastic part (22) is clamped with an elastic ring (24), one end of the elastic ring (24) is propped against one side of the U-shaped elastic part (22), and the other end of the elastic ring is propped against the inner wall of the valve seat (4).