CN218236186U

CN218236186U - Track butterfly valve

Info

Publication number: CN218236186U
Application number: CN202221329366.XU
Authority: CN
Inventors: 洪俊瑜; 洪墨飞
Original assignee: Qingzhou Cologne Valve Co ltd
Current assignee: Fujian Zhente Valve Technology Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-01-06
Anticipated expiration: 2032-05-31

Abstract

The utility model relates to an engineering equipment technical field, in particular to track butterfly valve. It includes: a bottom cover; the upper part of a bottom cover of the butterfly valve is provided with a lower valve rod, the upper part of the lower valve rod is provided with a tapered roller bearing, the tapered roller bearing is placed in a circular groove hole at the lower part of a valve body, and one end of a lower valve rod mandrel penetrates through a circular hole at the bottom of the butterfly plate, the valve body and the tapered roller bearing and is connected with the valve body in a locking way through a first locking nut; one end of the fixed screw is tightly pressed on the round hole at the bottom of the elastic butterfly plate, the elastic butterfly plate is arranged in the middle of the valve body, and a butterfly support block with an inclination guide slotted hole at one side is arranged at the upper part of the elastic butterfly plate; the upper part of the valve rod is provided with a filler, the filler is sleeved in the valve rod and then placed in a filler box on the upper part of the middle valve body, the upper part of the filler is provided with a cylindrical filler pressing block, the upper part of the cylindrical filler pressing block is provided with a plurality of layers of disc springs, the upper part of each disc spring is provided with a filler pressing sleeve, the upper part of each filler pressing sleeve is provided with a medium recovery sleeve, and each medium recovery sleeve is connected in a sealing groove on the upper part of each filler pressing sleeve. This structure makes the valve sealing performance more superior.

Description

Track butterfly valve

Technical Field

The utility model relates to an engineering equipment technical field, in particular to track butterfly valve.

Background

A butterfly valve is a control valve with a simple structure, can be used for on-off control of pipeline media, and is 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 disc. The conventional butterfly valve is basically characterized in that a butterfly plate sealing part is in close contact with a valve body sealing valve seat, the valve seat is extruded by the rotation of the butterfly plate to realize sealing, whether the butterfly plate is a soft sealing structure or a hard sealing structure, although the butterfly plate is a forced sealing structure, the butterfly plate is in contact friction or partial contact friction in the opening and closing process, the butterfly plate is influenced by the thrust of a pipeline medium and different sealing surface materials and the sealing characteristics of the butterfly valve, the butterfly valve is relatively heavy in torque in the opening and closing process, the sealing performance is influenced by long-term contact friction, the butterfly valve is very labor-consuming in manual opening, the cost is increased when an actuator is equipped, and meanwhile, because the sealing structure is in friction sealing, the sealing surface is scratched to leak due to friction, the defect of the valve is that the valve is a high-risk and severe working condition cannot be applied due to the fact that the emergency cut-off cannot be realized due to long closing time.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned butterfly valve opening torque ratio is bigger, and close time is long, has the sealed insecure technical problem who rubs dynamic seal structure and exist, the utility model aims at providing a track butterfly valve.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a rail butterfly valve, comprising: a bottom cover; the upper part of the bottom cover is provided with a lower valve rod, the upper part of the lower valve rod is provided with a tapered roller bearing, the tapered roller bearing is placed in a circular groove hole at the lower part of the valve body, and one end of a lower valve rod mandrel penetrates through a circular hole at the bottom of the butterfly plate, the valve body and the tapered roller bearing and is connected in a locking manner through a first locking nut; one end of the fixed screw is tightly pressed on the round hole at the bottom of the elastic butterfly plate, the elastic butterfly plate is arranged in the middle of the valve body, and a butterfly support block with an inclination guide slotted hole at one side is arranged at the upper part of the elastic butterfly plate;

the upper portion of the valve rod is provided with a filler, the filler is sleeved in the valve rod and then placed in a filler box on the upper portion of the middle valve body, the upper portion of the filler is provided with a cylindrical filler pressing block, the upper portion of the cylindrical filler pressing block is provided with a plurality of layers of disc springs, the cylindrical filler pressing block and the plurality of layers of disc springs are sleeved in the valve rod and pressed on the upper portion of the filler, the upper portion of each disc spring is provided with a filler pressing sleeve, the upper portion of each filler pressing sleeve is provided with a medium recycling sleeve, and the medium recycling sleeves are connected in a sealing groove on the upper portion of each filler pressing sleeve.

Preferably, one end of the fixing screw rod, which is exposed out of the circular hole in the middle of the elastic butterfly plate, is inserted into the circular hole in the bottom of the upper valve rod.

Preferably, one side of the valve body, which faces the elastic butterfly plate, is of a conical structure, and a plurality of sealing valve seats are arranged on the inner wall of the valve body.

Preferably, one side of the butterfly-shaped support block is provided with a lug, the lug is provided with a slope guide slot hole, the guide slot hole of the butterfly-shaped support block is tightly attached to the inner side planes of the two lugs at the upper part of the elastic butterfly plate, and the stud penetrates through round holes of the inner side planes of the two lugs of the elastic butterfly plate and the guide slot hole at one side of the butterfly-shaped support block and is provided with a nut which is locked and fixed to be connected with the butterfly plate and the butterfly-shaped support block.

Preferably, one side of the butterfly-shaped support block is provided with a fixing stud, and the fixing stud penetrates through a valve rod inserted in the middle of the support block from a round hole in one side of the butterfly-shaped support block and is fixedly connected with the butterfly-shaped support block and the valve rod through nuts in a locking mode.

Preferably, the packing pressing sleeve is provided with a flange connected with the support, the lower end of the packing pressing sleeve is pressed on the gland sealing gasket embedded in the groove on the flange of the middle valve body after the packing pressing sleeve is sleeved into the valve rod, and the gland sealing gasket is locked by a gland bolt and connected with the middle valve body. .

Preferably, the parts of the upper end and the lower end of the medium recovery sleeve, which are in close contact with the packing pressing sleeve and the valve rod, are respectively provided with a retaining ring.

Preferably, the support penetrates through the valve rod, the packing pressing sleeve and the assembly above the packing pressing sleeve to be pressed on the flange at the upper part of the middle valve body and is connected with the valve body through the support bolt in a locking mode, and the middle of the support is provided with the inverted L-shaped guide groove.

Preferably, the sealing structure is a combination of a soft sealing structure and a hard sealing structure, a groove is processed at the sealing part at the inner side of the valve body, the soft sealing ring is partially embedded into the groove, and the valve body is designed into a structure of a hard sealing surface.

Preferably, the upper part of the bracket is provided with a hole groove, the bearing sleeved valve rod is placed at the bottom of the hole groove of the bracket, the upper part of the bearing is provided with a valve rod nut, the valve rod nut is screwed into the valve rod and then tightly pressed on the upper part of the bearing, and the upper part of the valve rod nut is connected with the valve rod, the bearing and a nut gland through a nut gland which is locked on the upper opening of the hole groove of the bracket by the sleeved valve rod and the valve rod nut; one end of the valve rod nut, which penetrates through the nut gland, is provided with a hand wheel, and the upper part of the hand wheel is provided with a second locking nut. The middle part of the valve rod is provided with a fixed handle; the handle passes through the guide slot hole in the middle of the bracket and the round hole in the middle of the valve rod and then is locked by the nut and connected with the valve rod.

To sum up, the utility model discloses following beneficial effect has:

1. the combined forced static sealing structure has the advantages that the valve rod is lifted or lowered to synchronously drive the butterfly supporting block of the inclination guide slotted hole to drive the elastic butterfly plate to displace and open the elastic butterfly plate, the sealing reliability of the technology is ensured, because the sealing surface of the elastic butterfly plate is not in contact with the sealing surface of the valve seat in the whole opening or closing process of the valve, the zero-friction opening and closing function is realized, the possibility of scratching of the sealing surface is reduced, the service life of the valve is greatly prolonged, the opening and closing stroke of the valve is shortened, the closing time is shortened, and the valve has an emergency cut-off function. The valve is fixed through the cylindrical pin, so that the valve can slide up and down in a set wedge-type groove, compared with the original butterfly valve, the valve is simple in structure, convenient to machine, convenient to assemble and easy to machine, and parts are convenient to maintain and replace due to the fact that the parts are produced in a modularized mode;

2. the elastic butterfly plate is designed to have a plate spring structure at the bottom and elasticity, a protruding lug is arranged at the upper part, a through round hole is processed on the side surface of the lug, the elastic butterfly plate is locked and connected through a stud nut penetrating through a guide slot hole of a butterfly supporting block and the round hole of the lug of the elastic butterfly plate to form an up-down connection mode, the butterfly plate is opened or contracted by applying external force to a valve rod, the elastic butterfly plate is pushed by using the butterfly supporting block to enable the butterfly plate to displace, and a sealing surface of the elastic butterfly plate and a sealing part of a valve seat have no rotary friction in the opening and closing processes so as to reduce the torque of the valve and effectively protect a sealing surface of a valve body and the sealing surface of the butterfly plate;

3. the packing position is provided with a leakage medium recovery sleeve, the inner sides of the upper opening and the lower opening of the medium recovery sleeve are provided with convex semicircular outer edges, the gland and the valve rod are provided with grooves, and the medium recovery sleeve is tightly held by the self elasticity to form a sealing structure after being installed. The needle tube injector is inserted into the soft colloid sealing sleeve, so that a small part of medium leaked in the medium recovery sleeve is effectively recovered, and the device can ensure thorough isolation of toxic and harmful medium leaked from the filler and prevent the medium from being leaked to the outside to cause harm;

4. the sealing structure is designed to be combined with a soft and hard sealing structure, a groove is processed at the sealing part at the inner side of the valve body, the soft sealing ring is partially embedded into the groove, the valve body is designed to be a hard sealing surface structure, the sealing structure can realize the fireproof function, is convenient to install, maintain and replace, the soft and hard sealing combination enables the sealing performance of the valve to be more superior, the valve is suitable for more different working conditions, and the application range of the valve is wider.

Drawings

Fig. 1 is a schematic structural diagram provided by the utility model relates to a track butterfly valve:

fig. 2 is a schematic view of an inverted L-shaped guide groove provided in a butterfly valve of the present invention;

in the figure, 1, a bottom cover; 2. a first lock nut; 3. a lower valve stem mandrel; 4. a tapered roller bearing; 5. fixing the screw rod; 6. a soft seal ring; 7. a hard seal sealing face; 8. a butterfly-shaped support block; 9. fixing the stud; 10. a valve body; 11. a filler; 12. pressing cylindrical filler blocks; 13. a bracket bolt; 14. a plurality of layers of disc springs; 15. pressing and sleeving the filler; 16. a gland bolt; 17. a retainer ring; 18. a media recovery sleeve; 19. a bearing; 20. a valve stem nut; 21. a nut gland; 22. a hand wheel; 23. a second lock nut; 24. an elastic disc plate; 25. a guide slot hole; 26. a cylindrical pin; 27. a gland packing; 28. sealing the groove; 29. a handle; 30. an inverted L-shaped guide groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a rail butterfly valve includes: the bottom cover 1, bottom 1 upper portion is equipped with the lower valve rod, and lower valve rod upper portion is equipped with tapered roller bearing 4, and tapered roller bearing 4 places in the circular slot hole of well valve body lower part, and butterfly plate bottom round hole and valve body 10 and tapered roller bearing 4 are passed to lower valve rod dabber 3 one end, through first lock nut 2 lock joint. The other end of the fixing screw rod 5 is tightly pressed on a round hole at the bottom of the elastic butterfly plate 24, one end of the fixing screw rod 5, which is exposed out of the round hole at the middle part of the elastic butterfly plate 24, is inserted into the round hole at the bottom of the upper valve rod, the valve body 10 is a multi-sealing valve seat with a conical structure towards one side of the elastic butterfly plate 24, the elastic butterfly plate 24 is arranged at the middle part of the valve body, a butterfly support block 8 with a slope guide slot hole at one side is arranged at the upper part of the elastic butterfly plate 24, one side of the butterfly support block 8 is provided with a lug, the lug is provided with the slope guide slot hole, the guide slot hole of the butterfly support block 8 is tightly attached to the inner side planes of two lugs at the upper part of the elastic butterfly plate 24, a stud penetrates through the round holes at two side planes of the elastic butterfly plate 24 and the guide slot hole at one side of the butterfly support block 8, and is provided with a nut for locking and fixing and connecting with the butterfly plate and the butterfly plate 8. The valve rod inserted into the middle of the butterfly-shaped support block is fixedly locked with the butterfly-shaped support block 8 and the valve rod through a nut by the aid of the fixing screw 9, packing 11 is arranged on the upper portion of the valve rod, the packing 11 is placed in a packing box on the upper portion of the middle valve body after being sleeved into the valve rod, a cylindrical packing pressing block 12 is arranged on the upper portion of the packing, a plurality of layers of disc springs 14 are arranged on the upper portion of the cylindrical packing pressing block 12, the cylindrical packing pressing block 12 and the plurality of layers of disc springs 14 are sleeved into the valve rod and press the valve rod on the upper portion of the packing 11, a packing pressing sleeve 15 is arranged on the upper portion of the disc spring 14, a flange connected with a support is arranged on the packing pressing sleeve 15, the lower end of the packing pressing sleeve 15 is pressed on a sealing gasket 27 embedded in a groove on the upper flange of the middle valve body after being sleeved into the valve rod, and the packing pressing sleeve is locked with the middle valve body through a pressing cover bolt 16 and connected with the middle valve body. The upper part of the packing pressing sleeve 15 is provided with a medium recovery sleeve, the medium recovery sleeve 18 is connected in a sealing groove 28 at the upper part of the packing pressing sleeve 15, and the upper end and the lower end of the medium recovery sleeve 18 are respectively provided with a retaining ring 17 at the part which is tightly contacted with the packing pressing sleeve 15 and the valve rod. The support passes valve rod and packs and presses on cover 15 and the above subassembly pressure on well valve body upper portion flange, be connected with the valve body through support bolt 13 locking, the support middle part is equipped with type of falling L guide way 30, support upper portion is equipped with the hole groove, bearing 19 cover advances the valve rod and places in the hole groove bottom of support, bearing 19 upper portion is equipped with valve-stem nut 20, valve-stem nut 20 sticiss on bearing 19 upper portion after precessing the valve rod, valve-stem nut 20 upper portion is through the locking of cover advancing valve rod and valve-stem nut 20 at support hole groove upper mouth nut gland 21 and valve rod, bearing 19 and nut gland 21 are connected. One end of the valve rod nut 20 penetrating through the nut gland 21 is provided with a hand wheel 22, and the upper part of the hand wheel 22 is provided with a second locking nut 23. The middle part of the valve rod is provided with a fixed handle 29. The handle 29 passes through the guide slot hole 25 in the middle of the bracket and the round hole in the middle of the valve rod and then is locked by a nut and connected with the valve rod. The track butterfly valve is formed by combining the components, the hand wheel 22 is rotated anticlockwise to drive the valve rod to lift upwards, the valve rod drives the connected supporting block to lift upwards synchronously, along with upward movement of the supporting block, the cylindrical pin 26 with the inclination guide groove on one side of the supporting block drives the inner side of the elastic butterfly plate 24 penetrating through the lug contracts inwards to synchronous move the elastic butterfly plate 24 to contract inwards, the elastic butterfly plate 24 displaces, the butterfly plate is separated from the sealing valve seat, then the handle plane connected with the middle part of the valve rod is pulled to rotate 90 degrees through control, opening action is completed, the valve is opened, and otherwise the valve is controlled to be closed.

The specific embodiments are only for explaining the present invention, and it is not a limitation to the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present invention.

Claims

1. A rail butterfly valve, comprising: a bottom cover (1); the method is characterized in that: a lower valve rod is arranged at the upper part of the bottom cover (1), a tapered roller bearing (4) is arranged at the upper part of the lower valve rod, the tapered roller bearing (4) is placed in a circular groove hole at the lower part of the valve body, and one end of a lower valve rod mandrel (3) penetrates through a circular hole at the bottom of the butterfly plate, the valve body (10) and the tapered roller bearing (4) and is connected with the valve body in a locking way through a first locking nut (2); one end of the fixed screw (5) is tightly pressed on the round hole at the bottom of the elastic butterfly plate (24), the elastic butterfly plate (24) is arranged in the middle of the valve body, and the butterfly-shaped supporting block (8) with an inclined guide slot hole at one side is arranged at the upper part of the elastic butterfly plate (24); the upper portion of the valve rod is provided with a filler (11), the filler (11) is sleeved in the valve rod and then placed in a filler box on the upper portion of the middle valve body, the upper portion of the filler is provided with a cylindrical filler pressing block (12), the upper portion of the cylindrical filler pressing block (12) is provided with a plurality of layers of disc springs (14), the cylindrical filler pressing block (12) and the plurality of layers of disc springs (14) are sleeved in the valve rod and pressed on the upper portion of the filler (11), the upper portion of the disc spring (14) is provided with a filler pressing sleeve (15), the upper portion of the filler pressing sleeve (15) is provided with a medium recycling sleeve, and the medium recycling sleeve (18) is connected in a sealing groove (28) on the upper portion of the filler pressing sleeve (15).

2. A rail butterfly valve according to claim 1, wherein: one end of the fixing screw rod (5) exposed out of the round hole in the middle of the elastic butterfly plate (24) is inserted into the round hole in the bottom of the upper valve rod.

3. A track butterfly valve in accordance with claim 2, wherein: one side of the valve body (10) facing the elastic butterfly plate (24) is of a conical structure, and a plurality of sealing valve seats are arranged on the inner wall of the valve body.

4. A track butterfly valve in accordance with claim 3, wherein: and one side of the butterfly-shaped supporting block (8) is provided with a fixing stud (9), and the fixing stud (9) penetrates through a valve rod inserted in the middle of the supporting block from a round hole on one side of the butterfly-shaped supporting block (8) and is fixedly connected with the butterfly-shaped supporting block (8) and the valve rod through nuts in a locking manner.

5. The rail butterfly valve of claim 4, wherein: the packing pressing sleeve (15) is provided with a flange connected with the bracket, after the packing pressing sleeve (15) is sleeved into the valve rod, one end of the packing pressing sleeve (15) downwards presses the upper surface of the flange of the middle valve body and is embedded on the gland sealing gasket (27) in the groove, and the packing pressing sleeve is locked by a gland bolt (16) and is connected with the middle valve body.

6. A rail butterfly valve according to claim 5, wherein: the parts of the upper end and the lower end of the medium recovery sleeve (18) which are in close contact with the packing pressing sleeve (15) and the valve rod are respectively provided with a retainer ring (17).

7. A track butterfly valve in accordance with claim 6, wherein: the support passes through the valve rod and the packing pressing sleeve (15) and the components above the valve rod and is pressed on the flange at the upper part of the middle valve body and is locked and connected with the valve body through a support bolt (13), and the middle part of the support is provided with an inverted L-shaped guide groove (30).

8. The rail butterfly valve of claim 7, wherein: the sealing structure is a combination of a soft sealing structure and a hard sealing structure, a groove is processed at the sealing position at the inner side of the valve body, the soft sealing ring (6) is partially embedded into the groove, and the valve body is designed into a structure of a hard sealing surface (7).

9. A track butterfly valve in accordance with claim 8, wherein: the upper part of the bracket is provided with a hole groove, the bearing (19) is sleeved with the valve rod and placed at the bottom of the hole groove of the bracket, the upper part of the bearing (19) is provided with a valve rod nut (20), the valve rod nut (20) is screwed into the valve rod and then is tightly pressed on the upper part of the bearing (19), and the upper part of the valve rod nut (20) is connected with the valve rod, the bearing (19) and a nut gland (21) through a nut gland (21) which is sleeved with the valve rod and the valve rod nut (20) and locked on the upper opening of the hole groove of the bracket; a hand wheel (22) is arranged at one end of the valve rod nut (20) penetrating through the nut gland (21), and a second locking nut (23) is arranged at the upper part of the hand wheel (22);

a fixed handle (29) is arranged in the middle of the valve rod; the handle (29) passes through the guide slot hole (25) in the middle of the bracket and the round hole in the middle of the valve rod and then is locked by the nut and connected with the valve rod.