CN209909181U

CN209909181U - Butterfly valve

Info

Publication number: CN209909181U
Application number: CN201920546187.3U
Authority: CN
Inventors: 何耀明
Original assignee: Wuxi Juyan Energy Technology Co Ltd
Current assignee: Wuxi Juyan Energy Technology Co Ltd
Priority date: 2019-04-20
Filing date: 2019-04-20
Publication date: 2020-01-07
Anticipated expiration: 2029-04-20

Abstract

The utility model discloses a butterfly valve, belonging to the technical field of valve bodies, comprising a valve body, a valve shaft and a valve plate, the valve plate is rotationally connected in the valve body, the valve shaft comprises an inner shaft and an outer shaft, the inner shaft is slidably connected in the outer shaft, the outer shaft vertically penetrates through the valve body and the valve plate, a plurality of sliding grooves communicated with the cavity are axially formed in the outer shaft, the sliding groove is connected with a locking pin in a sliding way, a clamping hole matched with the locking pin is arranged in the valve plate, a sliding plate is fixedly connected on the locking pin, a fixed plate is fixedly connected on the inner wall of the sliding groove, a return spring is arranged between the fixed plate and the sliding plate, two ends of the return spring are respectively and fixedly connected with the fixed plate and the sliding plate, the two ends of the locking pin are respectively positioned in the sliding groove and the cavity, one end of the locking pin is arc-shaped, and the inner shaft is abutted against the arc-shaped end of the locking pin. The butterfly valve is convenient to disassemble and replace in the using process.

Description

Butterfly valve

Technical Field

The utility model relates to a valve body technical field, in particular to butterfly valve.

Background

The butterfly valve is also called a flap valve, is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media. The butterfly valve is a valve in which a closing member (a valve clack or a butterfly plate) is a disk and rotates around a valve shaft to open and close, and mainly plays a role in cutting off and throttling on a pipeline. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved. The butterfly valve can be used in the burner, controls the air flow into the burner, mixes with the fuel in the burner to a certain proportion to make the fuel burn completely, and then is ignited in the burner and then is fed into the boiler to heat the boiler.

Chinese patent with publication number CN206786026U discloses a burner smoke ventilation butterfly valve, which comprises a valve body, a valve cavity is arranged through the valve body, a valve rod is rotatably arranged through the valve body, a butterfly plate for plugging the valve cavity is fixedly arranged on the valve rod, an expansion gap is formed between the butterfly plate and the inner wall of the valve body, a valve rod driving device is arranged at the top end of the valve rod, and radiating fins are arranged on the valve rod driving device from top to bottom in a sleeved mode; the setting up of expansion gap has effectually prevented because the butterfly plate card dead condition that expend with heat and contract with cold and lead to, uses safe and reliable, and radiating fin can keep apart and cool down the heat on the valve body, and the effectual valve rod drive device's that leads to that the high temperature that has reduced damage, simple structure, the cost is lower, convenience safe in utilization.

In the in-service use in-process, fixed connection between butterfly plate and the valve rod, the butterfly plate rubs repeatedly between opening and closed in-process valve body inner wall and valve plate, can influence the leakproofness between the two after butterfly plate and the valve body wearing and tearing, consequently need dismantle the change to butterfly plate and valve body, and is comparatively difficult to the change of butterfly plate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a butterfly valve has butterfly plate and changes convenient advantage.

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

a butterfly valve comprises a valve body, a valve shaft and a valve plate, wherein the valve plate is rotatably connected in the valve body, the valve shaft comprises an inner shaft and an outer shaft, the outer shaft is axially provided with a cavity, the inner shaft is slidably connected in the cavity, the valve plate is radially provided with a shaft hole, the outer shaft vertically penetrates through the valve body and the shaft hole, the outer shaft is axially provided with a plurality of sliding grooves communicated with the cavity, locking pins are slidably connected in the sliding grooves, clamping holes matched with the locking pins are formed in the shaft holes, sliding plates are fixedly connected on the locking pins, fixed plates are fixedly connected on the inner walls of the sliding grooves, return springs are arranged between the fixed plates and the sliding plates, two ends of each return spring are respectively and fixedly connected on the fixed plates and the sliding plates, two ends of each locking pin are respectively positioned in the sliding grooves and the cavity, one end, the inner shaft is abutted against the arc-shaped end of the locking pin.

Through adopting above-mentioned technical scheme, outer axle is vertical to run through valve body and valve plate, and the both ends of fitting pin are located the cavity of outer axle and sliding tray respectively, puts into outer axle with interior axle in, and interior axle is contradicted and is kept away from one of sliding tray at the fitting pin and serve, and the surface extrusion fitting pin of interior axle and answer spring extension make the fitting pin insert the chucking downthehole to with outer axle and valve plate locking. The outer shaft is rotationally connected to the valve body, and the outer shaft rotates to drive the valve plate to rotate, so that the valve plate is opened and closed. After valve plate and valve body wearing and tearing, need change valve plate and valve body, the axle in the direction pulling towards keeping away from the valve body, interior axle and outer axle separation drive the fitting pin under the spring action of answer spring and keep away from the joint hole to can separate valve plate and outer axle, and then change valve plate and valve body, the operation is comparatively simple.

Further, the inner shaft comprises a shaft body and a clamping ring fixed on the shaft body, and the diameter of the outer ring of the clamping ring is larger than that of the shaft body.

Through adopting above-mentioned technical scheme, slide in outer axle when interior axle, the chucking ring is contradicted on the fitting pin to stretch into the fitting pin extrusion in the joint hole, when needs are with outer axle and valve plate separately, axle in the upwards pulling makes the chucking ring keep away from the fitting pin, can separate outer axle and valve plate, need not to extract interior axle from outer axle completely in the operation process, easy operation is convenient.

Furthermore, the outer ring of the valve plate is provided with a sealing ring.

By adopting the technical scheme, the sealing ring has certain compressibility, is compressed on the inner surface of the valve body, fills the gap between the valve body and the valve plate, prevents gas from entering from the gap between the valve body and the valve plate, and has a good sealing effect.

Further, the valve body is kept away from the valve plate can dismantle on the surface and be connected with the disk seat, the valve shaft passes the disk seat and wears to establish on valve body and valve plate, the both ends fixedly connected with bearing frame of disk seat, interference fit has the worm that is located between the bearing frame in the bearing frame, the cover is equipped with the worm wheel with worm looks meshing on the valve shaft.

Through adopting above-mentioned technical scheme, rotatory worm, the worm rotates and drives the worm wheel and rotate, and then drives the rotation of valve shaft and valve plate, meshes through the different teeth on worm wheel and the worm, makes the valve plate can rotate arbitrary angle relative to the valve body to the control is through the gas flow size of valve body. Because the worm gear and the worm have the self-locking function, the worm gear can not drive the worm to rotate, so when gas passes through the valve plate, the valve plate is subjected to the impulsive force of the gas, the valve plate can not rotate, the valve plate is stable, and the gas is stably kept to pass through the valve plate to enter the combustor at a certain flow rate and be uniformly mixed with fuel.

Further, the fixed ring of circumference fixedly connected with along the disk seat on the surface of disk seat, the valve body is kept away from the valve plate set up on the surface with fixed ring complex fixed slot, spacing hole has been seted up on the fixed slot inner wall, spacing downthehole elastic pin that is provided with, elastic pin and spacing hole pass through locking spring sliding connection, the one end that locking spring was kept away from to the elastic pin is the arc, set up on the fixed ring with elastic pin complex conflict hole.

Through adopting above-mentioned technical scheme, solid fixed ring on the disk seat stretches into in the fixed slot on the valve body, can improve the installation accuracy of disk seat on the valve body, and the installation effectiveness is higher. The in-process that solid fixed ring stretched into the fixed slot, when the position in spacing hole was slided in the conflict hole, the elastic pin stretched into the conflict hole under locking spring's effect to lock solid fixed ring's position in the fixed slot, make solid fixed ring can not take place relative slip in the fixed slot, can firmly install on the valve body by the disk seat, the mounting means is comparatively simple, improves installer's work efficiency. When the valve body is damaged and needs to be detached from the valve seat to be repaired or replaced, the fixing ring on the valve body slides towards the direction away from the valve seat along the direction of the fixing groove, the fixing ring extrudes the elastic pin, the locking spring is compressed, the fixing ring can be separated from the fixing groove, the valve body and the valve seat are separated, the valve seat can be separated from the valve body and the valve seat only by sliding towards the direction away from the valve plate in the operation process, and the operation is simple.

Furthermore, one end of the worm is fixedly connected with a rocker arm.

Through adopting above-mentioned technical scheme, can rotate the worm better through rotatory rocking arm to control the flow size between valve body and the valve plate.

Furthermore, the valve body is fixedly connected with a connecting rod, the side face of the valve seat is fixedly connected with a locking ring which is matched with the connecting rod and provided with an opening, and one end, close to the locking ring, of the connecting rod is provided with a bulge.

Through adopting above-mentioned technical scheme, when disk seat and valve body link together the in-process, put into the fixed slot with solid fixed ring, the arch on the connecting rod struts the locking ring and makes the connecting rod stretch into the locking ring, and the arch on the connecting rod can guarantee that disk seat and valve body take place to rock the time, and the connecting rod can not break away from the locking ring, guarantees that disk seat and valve body link together firmly.

Furthermore, fixedly connected with chucking piece on the disk seat, fixedly connected with has elastic and colludes the chucking board of shape with chucking piece matched with on the valve body.

Through adopting above-mentioned technical scheme, from last in-process down installing on the valve body when the disk seat, solid fixed ring stretches into the fixed slot, and in the chucking board was gone into to the chucking piece card, further increased the fastness that disk seat and valve body are connected.

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

1. through the setting of outer axle and interior axle, the outer axle is vertical to run through valve body and valve plate, and interior axle is put into outer epaxial, and interior axle is contradicted and is kept away from one end of sliding tray at the fitting pin on, and the surface extrusion fitting pin of interior axle just restores the spring extension and makes the fitting pin insert the chucking downthehole to with outer axle and valve plate locking. When the valve plate and the valve body are abraded, the valve plate and the valve body need to be replaced, the inner shaft is pulled towards the direction far away from the valve body, the inner shaft is separated from the outer shaft, and the locking pin is driven to be far away from the clamping hole under the elastic action of the return spring, so that the valve plate can be separated from the outer shaft, the valve plate and the valve body can be replaced, and the operation is simple;

2. through the setting of solid fixed ring, fixed slot and elastic pin, gu fixed ring stretches into the in-process of fixed slot, when the position in spacing hole is slided in conflict hole, the elastic pin stretches into the conflict hole under locking spring's effect to lock solid fixed ring's position in the fixed slot, make solid fixed ring can not take place relative slip in the fixed slot, can firmly install on the valve body by the disk seat, the mounting means is comparatively simple, improves installer's work efficiency.

Drawings

FIG. 1 is a schematic view of the structure of an embodiment;

FIG. 2 is a sectional view of the embodiment;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

fig. 4 is an enlarged schematic view of a portion B in fig. 2.

In the figure, 1, a valve body; 2. a valve shaft; 3. a valve plate; 4. an inner shaft; 5. an outer shaft; 6. a clamping hole; 7. a sliding groove; 8. a locking pin; 9. a sliding plate; 10. a fixing plate; 11. a return spring; 12. a clamping ring;

13. a valve seat; 14. a bearing seat; 15. a worm; 16. a worm gear; 17. a rocker arm; 18. a fixing ring; 19. fixing grooves; 20. a limiting hole; 21. an elastic pin; 22. a locking spring; 23. a contact hole; 24. a connecting rod; 25. locking a ring; 26. a seal ring; 27. a bump; 28. a groove; 29. a clamping block; 30. and (4) clamping the plate.

Detailed Description

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

Example (b):

a butterfly valve, as shown in FIGS. 1 and 2, includes a valve body 1, a valve shaft 2, a valve plate 3, and a valve seat 13. Valve plate 3 rotates to be connected in valve body 1, and shaft 2 includes interior axle 4 and outer axle 5, and shaft hole 31 has radially been seted up to valve plate 3, and outer axle 5 passes the vertical valve body 1 and the valve plate 3 that runs through in shaft hole 31, and outer axle 5 has seted up the cavity along the axial, and interior axle 4 sliding connection is in outer axle 5, and disk seat 13 wears to overlap and links to each other on outer axle 5 stretches out one end of valve body 1 and valve body 1.

As shown in fig. 2 and 3, a fixing ring 18 is fixedly connected to the surface of the valve seat 13 along the circumferential direction of the valve seat 13, and a fixing groove 19 engaged with the fixing ring 18 is formed on the surface of the valve body 1 away from the valve plate 3. The valve seat 13 is mounted on the valve body 1 through the outer shaft 5, and the valve seat 13 and the valve body 1 can be coupled together by placing the fixing ring 18 in the fixing groove 19.

As shown in fig. 1, a connecting rod 24 is fixedly connected to the valve body 1, a locking ring 25 which is matched with the connecting rod 24 is fixedly connected to the side surface of the valve seat 13, the locking ring 25 is an open ring, and a protrusion is arranged at one end of the connecting rod 24 close to the fixing ring 18. When the fixing ring 18 on the valve seat 13 is placed in the fixing groove 19, the protrusion on the connecting rod 24 extends into the locking ring 25, the locking ring 25 is expanded to enable the connecting rod 24 to extend into the locking ring 25, the protrusion on the connecting rod 24 enables the connecting rod 24 not to be easily separated from the locking ring 25, and the firmness of connection between the valve seat 13 and the valve body 1 is improved.

As shown in fig. 1 and 2, a hook-shaped elastic clamping plate 30 is fixedly connected to the valve body 1, and a clamping block 29 clamped in the clamping plate 30 is fixedly connected to the valve seat 13. The chucking block 29 stretches into the chucking plate 30, and the chucking block 29 is limited by the chucking plate 30, so that the firmness of the connection between the valve seat 13 and the valve body 1 is enhanced.

As shown in fig. 2 and 3, the inner wall of the fixing groove 19 is provided with a plurality of limiting holes 20, the limiting holes 20 are internally provided with elastic pins 21, the elastic pins 21 are slidably connected with the limiting holes 20 through locking springs 22, one ends of the elastic pins 21 far away from the locking springs 22 are arc-shaped, and the fixing ring 18 is provided with abutting holes 23 matched with the elastic pins 21. The fixing ring 18 is placed in the fixing groove 19, the surface of the fixing ring 18 extrudes the elastic pin 21, the locking spring 22 contracts to enable the elastic pin 21 to extend into the limiting hole 20, and when the abutting hole 23 in the fixing ring 18 slides to the position of the limiting hole 20, the elastic pin 21 extends into the abutting hole 23 under the action of the elastic force of the locking spring 22, so that the fixing ring 18 is locked in the fixing groove 19, and the valve seat 13 and the valve body 1 are detachably connected together.

As shown in fig. 1, a rotating device is arranged on the valve seat 13, the rotating device comprises a worm 15 and a worm wheel 16 matched with the worm 15, bearing seats 14 are fixedly connected to two ends of the valve seat 13, the worm 15 is in interference fit in the bearing seats 14, the worm 15 is located between the two bearing seats 14, the worm wheel 16 meshed with the worm 15 is fixedly connected to the outer shaft 5, and a rocker arm 17 is fixedly connected to one end of the worm wheel 16. Rotating the rocker arm 17, the worm 15 rotates and in turn controls the rotation of the worm wheel 16, thereby driving the rotation of the outer shaft 5 and consequently the valve plate 3 to rotate to different angles relative to the valve body 1.

As shown in fig. 2 and 4, the outer shaft 5 is provided with a sliding groove 7, the sliding groove 7 is communicated with the cavity of the outer shaft 5, the sliding groove 7 is provided with a plurality of sliding grooves along the axial direction of the outer shaft 5, the shaft hole 31 is abutted against the surface of the outer shaft 5 and is provided with a clamping hole 6 right opposite to the sliding groove 7, and the sliding groove 7 is internally and slidably connected with a locking pin 8 inserted into the clamping hole 6. When the outer shaft 5 is inserted into the valve plate 3, the locking pin 8 moves along the sliding groove 7 between the catching hole 6 and the hollow space of the outer shaft 5.

As shown in fig. 2 and 4, a sliding plate 9 is fixedly connected to the locking pin 8, a fixed plate 10 is fixedly connected to the inner wall of the sliding groove 7, the sliding plate 9 is located between the fixed plate 10 and the valve plate 3, a return spring 11 is arranged between the fixed plate 10 and the sliding plate 9, two ends of the return spring 11 are respectively fixedly connected to the fixed plate 10 and the sliding plate 9, and one end of the locking pin 8, which is far away from the clamping hole 6, is arc-shaped. Interior axle 4 slides in outer axle 5, and interior axle 4 contradicts on the arc end of fitting pin 8, and the return spring 11 is tensile and fitting pin 8 is kept away from the one end of arc end and is stretched into joint hole 6, and then locks outer axle 5 and valve plate 3.

As shown in fig. 2 and 4, the inner shaft 4 includes a shaft body and a snap ring 12 fixed to the shaft body, and an outer ring diameter of the snap ring 12 is larger than a diameter of the shaft body. When the inner shaft 4 completely extends into the outer shaft 5, the clamping ring 12 is abutted against the locking pin 8, and the locking pin 8 is extruded to extend into the clamping hole 6.

As shown in fig. 2, a seal ring 26 is provided on the outer peripheral side of the valve plate 3 along the circumferential direction of the valve plate 3. The sealing ring 26 has certain compressibility, and the sealing ring 26 is compressed on the surface of the valve body 1 to fill the gap between the valve body 1 and the valve plate 3, so that gas is prevented from entering from the gap between the valve body 1 and the valve plate 3, and a better sealing effect is achieved.

The specific implementation process comprises the following steps: the outer axle 5 vertically runs through valve body 1 and shaft hole 31, puts into outer axle 5 with interior axle 4 in, and the chucking ring 12 on interior axle 4 contradicts on the one end that the sliding tray 7 was kept away from to fitting pin 8, and interior axle 4's surface extrusion fitting pin 8 and the extension of recoil spring 11 make fitting pin 8 insert in the joint hole 6 to with outer axle 5 and valve plate 3 locking. The valve seat 13 passes through the outer shaft 5, the fixing ring 18 on the valve seat 13 extends into the fixing groove 19 on the valve body 1, the bulge on the connecting rod 24 stretches the locking ring 25 to enable the connecting rod 24 to extend into the locking ring 25, the clamping block 29 is clamped on the clamping plate 30, and the elastic pin 21 extends into the abutting hole 23 under the action of the locking spring 22, so that the valve seat 13 and the valve body 1 are locked.

After valve plate 3 and valve body 1 wear and tear, need change valve plate 3 and valve body 1, axle 4 in the direction pulling towards keeping away from valve body 1, locking pin 8 is kept away from to chucking ring 12, drives locking pin 8 and keeps away from joint hole 6 under the spring action of answer spring 11 to can separate valve plate 3 and outer axle 5, valve plate 3 and valve body 1 realize the separation promptly. The valve seat 13 is pulled towards the direction far away from the valve body 1, the elastic pin 21 extends into the limiting hole 20, the protrusion on the connecting rod 24 props the locking ring 25 and the locking ring 25 to separate, the valve seat 13 and the valve body 1 can be separated, and then the valve plate 3 and the valve body 1 are replaced, and the operation is simple.

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

Claims

1. The utility model provides a butterfly valve, includes valve body (1), valve shaft (2) and valve plate (3), its characterized in that: the valve plate (3) is rotatably connected in the valve body (1), the valve shaft (2) comprises an inner shaft (4) and an outer shaft (5), the outer shaft (5) is axially provided with a cavity, the inner shaft (4) is slidably connected in the cavity, the valve plate (3) is radially provided with a shaft hole (31), the outer shaft (5) vertically penetrates through the valve body (1) and the shaft hole (31), the outer shaft (5) is axially provided with a plurality of sliding grooves (7) communicated with the cavity, the sliding grooves (7) are internally and slidably connected with locking pins (8), the shaft hole (31) is internally provided with a clamping hole (6) matched with the locking pins (8), the locking pins (8) are fixedly connected with sliding plates (9), the inner walls of the sliding grooves (7) are fixedly connected with fixed plates (10), and springs (11) are arranged between the fixed plates (10) and the sliding plates (9), the two ends of the return spring (11) are respectively and fixedly connected to the fixed plate (10) and the sliding plate (9), the two ends of the locking pin (8) are respectively located in the sliding groove (7) and the cavity, one end, extending into the cavity, of the locking pin (8) is arc-shaped, and the inner shaft (4) is abutted to the arc-shaped end of the locking pin (8).

2. A butterfly valve in accordance with claim 1, wherein: the inner shaft (4) comprises a shaft body and a clamping ring (12) fixed on the shaft body, and the diameter of the outer ring of the clamping ring (12) is larger than that of the shaft body.

3. A butterfly valve in accordance with claim 1, wherein: and a sealing ring (26) is arranged on the outer ring of the valve plate (3).

4. A butterfly valve in accordance with claim 1, wherein: valve body (1) is kept away from valve plate (3) can dismantle on the surface and is connected with disk seat (13), outer axle (5) are worn to establish on disk seat (13), the both ends fixedly connected with bearing frame (14) of disk seat (13), interference fit has worm (15) that are located between bearing frame (14) in bearing frame (14), the cover is equipped with worm wheel (16) with worm (15) looks meshing on valve shaft (2).

5. A butterfly valve in accordance with claim 4, wherein: the fixed ring (18) of circumference fixedly connected with along disk seat (13) on the surface of disk seat (13), valve plate (3) is kept away from in valve body (1) offer on the surface with fixed ring (18) complex fixed slot (19), spacing hole (20) have been seted up on fixed slot (19) inner wall, be provided with in spacing hole (20) elastic pin (21), elastic pin (21) and spacing hole (20) are through locking spring (22) sliding connection, the one end that locking spring (22) were kept away from in elastic pin (21) is the arc, set up on fixed ring (18) with elastic pin (21) complex conflict hole (23).

6. A butterfly valve in accordance with claim 4, wherein: one end of the worm (15) is fixedly connected with a rocker arm (17).

7. A butterfly valve in accordance with claim 4, wherein: the valve is characterized in that a connecting rod (24) is fixedly connected to the valve body (1), a locking ring (25) which is matched with the connecting rod (24) and provided with an opening is fixedly connected to the side face of the valve seat (13), and a protrusion is arranged at one end, close to the fixing ring (18), of the connecting rod (24).

8. The butterfly valve of claim 7, wherein: fixedly connected with chucking piece (29) on disk seat (13), fixedly connected with has elastic and colludes clamping plate (30) of shape with chucking piece matched with on valve body (1).