CN215445084U

CN215445084U - Novel high leakproofness butterfly valve

Info

Publication number: CN215445084U
Application number: CN202121205449.3U
Authority: CN
Inventors: 张娜娜; 林成男; 潘侠侠; 林伟; 叶锋
Original assignee: ZHEJIANG DECA CONTROL VALVE METER CO Ltd
Current assignee: ZHEJIANG DECA CONTROL VALVE METER CO Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-07
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a novel high-sealing butterfly valve which comprises a valve body pipeline, wherein a ring-shaped piece is fixedly connected to the inner end of the valve body pipeline, a stop block is fixedly connected between the outer wall of the ring-shaped piece and the inner wall of the valve body pipeline and close to an outer end, two piston rings are movably sleeved between the outer wall of the ring-shaped piece and the inner wall of the valve body pipeline, a buffer spring is fixedly connected between the two piston rings, air cavities are filed on the upper inner wall and the lower inner wall of the valve body pipeline, an air bag is annularly sleeved at the inner end of the valve body pipeline, the other ends of the two air cavities are fixedly connected with the upper end and the lower end of the air bag respectively, a butterfly plate is arranged at the inner end of the air bag, a first connecting column and a second connecting column are fixedly connected to one end of the butterfly plate close to the upper end and the lower end of the second connecting column respectively, and a supporting rod is rotatably connected to the lower end of the second connecting column. According to the butterfly valve, the device is good in sealing performance, not prone to water seepage, simple to assemble and disassemble and convenient to replace.

Description

Novel high leakproofness butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valve sealing, in particular to a novel butterfly valve with high sealing performance.

Background

In recent years, along with the rapid development of social economy, the living standard of people is increasingly improved, the field of butterfly valves is also increasingly wide, the traditional metal sealing butterfly valve is caused by a sealing pair structure, the sealing effect of the traditional metal sealing butterfly valve is often damaged by the scratch of the sealing pair after the traditional metal sealing butterfly valve is used for a period of time, the service life of the traditional metal sealing butterfly valve is further directly influenced, the sealing failure of the butterfly valve is caused, and the damage of a device is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a novel butterfly valve with high sealing property.

In order to achieve the purpose, the utility model adopts the following technical scheme: a novel butterfly valve with high sealing performance comprises a valve body pipeline, wherein an annular piece is fixedly connected to the inner end of the valve body pipeline, a stop block is fixedly connected between the outer wall of the annular piece and the inner wall of the valve body pipeline and close to an outer end, two piston rings are movably sleeved between the outer wall of the annular piece and the inner wall of the valve body pipeline, a buffer spring is fixedly connected between the two piston rings, air cavities are filed on the upper inner wall and the lower inner wall of the valve body pipeline, an air bag is annularly sleeved at the inner end of the valve body pipeline, and the other ends of the two air cavities are fixedly connected with the upper end and the lower end of the air bag respectively;

the inner end of the air bag is provided with a butterfly plate, one end of the butterfly plate is close to the upper end and the lower end and is respectively fixedly connected with a first connecting post and a second connecting post, the lower end of the second connecting post is rotatably connected with a supporting rod, the supporting rod is fixedly provided with end threads close to the outer wall of the lower end, the upper outer wall and the lower outer wall of the valve body pipeline are respectively provided with a sealing groove, the lower end of the supporting rod penetrates through the sealing groove and is sleeved with a sealing cover through the end threads, the lower end of the sealing cover is rotatably sleeved with a buckle cover, the upper end of the first connecting post is provided with a driving rod, the lower end of the driving rod is fixedly provided with a diamond-shaped end, the driving rod is fixedly provided with upper threads close to the outer wall of the upper end, the driving rod is sleeved at the inner end of the first connecting post through the diamond-shaped end cap, the upper end of the driving rod penetrates through the sealing groove of the valve body pipeline and is sleeved with a sealing nut through the upper threads, and a locking cover is arranged at the upper end of the sealing nut.

As a further description of the above technical solution:

two the dog is ring structure and the centre of a circle is on the same point.

As a further description of the above technical solution:

buffer spring is provided with a plurality ofly altogether, and is a plurality of buffer spring all uses piston ring central point to be circular array setting as the dot, and is a plurality of buffer spring all adopts stainless steel material to make.

As a further description of the above technical solution:

and the two air cavities are communicated with the outer wall of the annular piece and the inner wall of the valve body pipeline.

As a further description of the above technical solution:

the inner wall of the air bag is of a corrugated structure.

As a further description of the above technical solution:

sealing gaskets are fixedly arranged between the sealing cover and the sealing nut and between the sealing grooves, and the sealing gaskets are sleeved on the outer walls of the supporting rod and the driving rod respectively.

As a further description of the above technical solution:

the top end of the driving rod penetrates through the locking cover and is fixedly connected with a handle.

As a further description of the above technical solution:

the buckling cover and the locking cover are fixedly connected to the outer wall of the valve pipeline through bolts.

The utility model has the following beneficial effects:

1. according to the novel high-sealing butterfly valve provided by the utility model, the water pressure is utilized to press the piston ring to move after the butterfly plate is closed, so that gas in the pressing air cavity drives the air bag to bulge and fill the concave surface of the outer wall of the butterfly plate, a quite good sealing effect is achieved, the side of the outer wall of the butterfly plate presses the air bag to contract, and therefore, in the water pressure balancing process, the piston ring is pushed to move reversely again, and the internal pressure balance is maintained.

2. According to the novel high-sealing-performance butterfly valve, the sealing gasket is arranged to be matched with the sealing nut to be tightly pressed with the sealing cover, and meanwhile the auxiliary buckle cover and the locking cover are locked, so that the butterfly plate is convenient to disassemble and assemble, and meanwhile, the water seepage phenomenon cannot occur at the connecting part of the valve shaft supporting rod and the driving rod and a valve body pipeline.

3. According to the novel high-sealing butterfly valve provided by the utility model, the double piston rings are arranged to enhance the sealing property in the air cavity, so that the conditions of gas overflow and water flow infiltration are prevented from occurring, a double protection effect is achieved, and the piston rings can be effectively prevented from falling off to cause damage to the butterfly valve by matching with the stop blocks.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a novel high-sealing butterfly valve provided by the utility model;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is a schematic top view of a partial structure of a butterfly plate of a novel high-sealing butterfly valve according to the present invention;

FIG. 5 is a schematic perspective view of a driving rod of a novel high-sealing butterfly valve according to the present invention;

fig. 6 is a schematic perspective view of a partial structure of a sealing cover of the novel high-sealing butterfly valve according to the present invention.

Illustration of the drawings:

1. a valve body conduit; 2. an annular member; 3. a stopper; 4. a piston ring; 5. a buffer spring; 6. an air cavity; 7. an air bag; 8. a butterfly plate; 9. a first connecting column; 10. a second connecting column; 11. a support bar; 12. end threads; 13. sealing the groove; 14. a sealing cover; 15. covering; 16. a driving lever; 1601. a diamond-shaped end; 1602. an upper thread; 17. a handle; 18. a seal nut; 19. a gasket; 20. and locking the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, one embodiment of the present invention is provided: the utility model provides a novel high leakproofness butterfly valve, including

valve body pipeline

1, 1 inner fixedly connected with loop forming element 2 of valve body pipeline, be close to equal fixedly connected with dog 3 of outside port department between loop forming element 2 outer wall and the 1 inner wall of valve body pipeline, two piston rings 4 have been cup jointed in the activity between 2 outer walls of loop forming element and the 1 inner wall of valve body pipeline, fixedly connected with buffer spring 5 between two piston rings 4, all file on the 1 upper and lower inner wall of valve body pipeline and seted up

air cavity

6, 1 inner annular of valve body pipeline has cup jointed

gasbag

7, 6 other ends of two air cavities respectively with 7 upper and lower both ends fixed connection of gasbag.

The inner end of the air bag 7 is provided with a butterfly plate 8, one end of the butterfly plate 8 is close to the upper end and the lower end and is fixedly connected with a first connecting column 9 and a second connecting column 10 respectively, the lower end of the second connecting column 10 is rotatably connected with a supporting rod 11, the supporting rod 11 is close to the outer wall of the lower end and is fixedly provided with an end thread 12, the upper outer wall and the lower outer wall of the valve body pipeline 1 are both provided with sealing grooves 13, the lower end of the supporting rod 11 penetrates through the sealing groove 13 and is in threaded connection with a sealing cover 14 through the end thread 12, the lower end of the sealing cover 14 is rotatably sleeved with a buckle cover 15, the upper end of the first connecting column 9 is provided with a driving rod 16, the lower end of the driving rod 16 is fixedly provided with a diamond-shaped end 1601, the driving rod 16 is close to the outer wall of the upper end and is fixedly provided with an upper thread 1602, the driving rod 16 penetrates through the sealing groove 13 of the upper end of the valve body pipeline 1 and is in threaded connection with a sealing nut 18 through the upper thread 1602, the upper end of the gland nut 18 is provided with a locking cap 20.

The two check blocks 3 are of annular structures, the circle centers of the two check blocks are located at the same point, the check blocks 3 are used for limiting the movement direction of the piston ring 4 and preventing the piston ring 4 from falling off, and therefore air tightness failure in the air cavity 6 is caused, the buffer springs 5 are arranged in a plurality, the buffer springs 5 are arranged in a circular array by taking the central point of the piston ring 4 as a circular dot, the buffer springs 5 are made of stainless steel materials and are prevented from being corroded due to the influence of moist air after the buffer springs 5 are used for a long time, the two air cavities 6 are communicated with the outer wall of the ring 2 and the inner wall of the valve body pipeline 1, the inner wall of the air bag 7 is of a corrugated structure and is convenient to expand during inflation, the sealing gaskets 19 are fixedly arranged between the sealing covers 14 and the sealing nuts 18 and the two sealing grooves 13, the sealing gaskets 19 are used for sealing the sealing grooves 13 and preventing water seepage, and the sealing covers 14 and the sealing nuts 18 are used for compressing the sealing gaskets 19 to enhance the sealing effect, the two sealing gaskets 19 are respectively sleeved on the outer walls of the support rod 11 and the driving rod 16, the top end of the driving rod 16 penetrates through the locking cover 20 and is fixedly connected with the handle 17, and the buckling cover 15 and the locking cover 20 are fixedly connected on the outer wall of the valve body pipeline 1 through bolts.

The working principle is as follows: when the device is used, the handle 17 drives the driving rod 16 to rotate, so that the first connecting post 9 is driven to rotate, the butterfly plate 8 is driven to be opened and closed, when the butterfly plate 8 is closed, the pressure generated by water flow can press the piston ring 4 to move, so that air in the air cavity 6 is compressed, the protruding clamp on the inner wall of the air bag 7 and the concave part on the outer wall of the butterfly plate 8 are pressed, sealing is formed, seepage of water between the outer wall of the butterfly plate 8 and the inner wall of the valve body pipeline 1 can be effectively prevented, when the butterfly plate 8 is opened, the butterfly plate 8 rotates, the air bag 7 is pressed at the outer protruding part, meanwhile, the water pressure gradually tends to be balanced, and the compressed air reversely presses the piston ring 4 to move, so that the internal pressure balance is maintained.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a novel high leakproofness butterfly valve, includes valve body pipeline (1), its characterized in that: the inner end of the valve body pipeline (1) is fixedly connected with a ring-shaped piece (2), a stop block (3) is fixedly connected between the outer wall of the ring-shaped piece (2) and the inner wall of the valve body pipeline (1) and close to the outer side end opening, two piston rings (4) are movably sleeved between the outer wall of the ring-shaped piece (2) and the inner wall of the valve body pipeline (1), a buffer spring (5) is fixedly connected between the two piston rings (4), air cavities (6) are respectively filed on the upper inner wall and the lower inner wall of the valve body pipeline (1), an air bag (7) is annularly sleeved at the inner end of the valve body pipeline (1), and the other ends of the two air cavities (6) are respectively and fixedly connected with the upper end and the lower end of the air bag (7);

the inner end of the air bag (7) is provided with a butterfly plate (8), one end of the butterfly plate (8) is close to the upper end and the lower end and is fixedly connected with a first connecting column (9) and a second connecting column (10) respectively, the lower end of the second connecting column (10) is rotatably connected with a supporting rod (11), the supporting rod (11) is close to the outer wall of the lower end and is fixedly provided with a tip thread (12), the upper outer wall and the lower outer wall of the valve body pipeline (1) are respectively provided with a sealing groove (13), the lower end of the supporting rod (11) penetrates through the sealing groove (13) and is in threaded sleeve connection with a sealing cover (14) through the tip thread (12), the lower end of the sealing cover (14) is rotatably sleeved with a buckle cover (15), the upper end of the first connecting column (9) is provided with a driving rod (16), the lower end of the driving rod (16) is fixedly provided with a diamond-shaped end (1601), the driving rod (16) is close to the outer wall of the upper end and is fixedly provided with an upper thread (1602), the driving rod (16) is sleeved at the inner end of the first connecting column (9) through a diamond-shaped end (1601), the upper end of the driving rod (16) penetrates through the upper end sealing groove (13) of the valve body pipeline (1) and is sleeved with a sealing nut (18) through an upper thread (1602), and a locking cover (20) is arranged at the upper end of the sealing nut (18).

2. The novel butterfly valve with high sealing performance according to claim 1, wherein: the two stop blocks (3) are both of annular structures, and the circle centers of the two stop blocks are located at the same point.

3. The novel butterfly valve with high sealing performance according to claim 1, wherein: buffer spring (5) are provided with a plurality ofly altogether, and are a plurality of buffer spring (5) all use piston circle (4) central point to be the setting of circular array as the dot, and are a plurality of buffer spring (5) all adopt stainless steel material to make.

4. The novel butterfly valve with high sealing performance according to claim 1, wherein: and the two air cavities (6) are communicated with the outer wall of the annular piece (2) and the inner wall of the valve body pipeline (1).

5. The novel butterfly valve with high sealing performance according to claim 1, wherein: the inner wall of the air bag (7) is of a corrugated structure.

6. The novel butterfly valve with high sealing performance according to claim 1, wherein: sealing gaskets (19) are fixedly arranged between the sealing cover (14), the sealing nut (18) and the two sealing grooves (13), and the sealing gaskets (19) are respectively sleeved on the outer walls of the supporting rod (11) and the driving rod (16).

7. The novel butterfly valve with high sealing performance according to claim 1, wherein: the top end of the active rod (16) penetrates through the locking cover (20) and is fixedly connected with a handle (17).

8. The novel butterfly valve with high sealing performance according to claim 1, wherein: the buckling cover (15) and the locking cover (20) are fixedly connected to the outer wall of the valve body pipeline (1) through bolts.