CN208885997U - A kind of double-acting friction-free butterfly valve - Google Patents
A kind of double-acting friction-free butterfly valve Download PDFInfo
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- CN208885997U CN208885997U CN201821541766.0U CN201821541766U CN208885997U CN 208885997 U CN208885997 U CN 208885997U CN 201821541766 U CN201821541766 U CN 201821541766U CN 208885997 U CN208885997 U CN 208885997U
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- valve
- valve shaft
- butterfly plate
- connector sleeve
- butterfly
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Abstract
A kind of double-acting friction-free butterfly valve, including valve body, butterfly plate, upper valve shaft, lower valve shaft, lower cover, valve seat on sealing ring and valve body on butterfly plate forms sealing pair, cam key is set on upper valve shaft, upper valve shaft outer space is cased with connector sleeve, cam keyway is set on connector sleeve, upper valve shaft rotation drives connector sleeve rotation, it is connected between connector sleeve and butterfly plate by upper link block, upper link block is fixedly connected with connector sleeve with butterfly plate by fastener, upper valve shaft continues to rotate after rotating 90 °, cam key applies pressure to cam keyway, upper valve shaft drives guide sleeve to swing, so that butterfly plate sealing ring presses to valve seat.The beneficial effects of the utility model are: valve event is divided into rotation and swings two parts, relative friction is not present between sealing ring and valve seat in valve whole process, the service life of valve can effectively be extended, while can significantly reduce required torque during valve opening and closing.
Description
Technical field
The utility model relates to a kind of butterfly valves, more particularly to double-acting friction-free butterfly valve.
Background technique
In the prior art valve close to for after by valve shaft provide torque for sealing ring provide must seal pressure, realization
Valve seal there are great frictional force between sealing ring and valve seal pair, be easy to cause sealing ring to grind in the process
Damage.Simultaneously in the process, it is that the small arm of force drives big arm of force rotation that valve shaft, which provides seal pressure for sealing ring, needs driving device
Very big operation torque is provided and is just able to achieve valve seal, therefore thicker valve shaft is needed to provide the enough intensity of valve shaft, is caused into
This waste.The prior art is three eccentricity structure, needs the key components and parts such as special fixture processing valve body, butterfly plate and sealing ring,
And very high to requirement on machining accuracy, components interchangeability is low, can not accomplish components wildcard.
Utility model content
In order to overcome the disadvantages mentioned above of existing butterfly valve, it is small, with long service life that the utility model provides a kind of open and close torque
Butterfly valve.
Technical solution adopted by the utility model to solve its technical problems is, a kind of double-acting friction-free butterfly valve, including
Valve body, butterfly plate, upper valve shaft, lower valve shaft, lower cover, the valve seat on sealing ring and valve body on butterfly plate form sealing pair, sealing ring
It is fixedly mounted on butterfly plate by pressing plate and screw, is connected between lower valve shaft and butterfly plate by lower connecting block, lower connecting block and butterfly
Plate is fixed by fastener, is connected by key between lower connecting block and lower valve shaft, and the confined planes at 90 ° of intervals are arranged on lower cover,
The shaft end of lower valve shaft carries out 90 ° of rotations between confined planes, and bearing block, bearing block and lower valve shaft are arranged between lower valve shaft and valve body
Between ball bearing is set；
Cam key is set on upper valve shaft, and upper valve shaft outer space is cased with connector sleeve, cam keyway is arranged on connector sleeve, and upper valve shaft turns
It is dynamic to drive connector sleeve rotation, it is connected between connector sleeve and butterfly plate by upper link block, upper link block passes through with connector sleeve and butterfly plate
Fastener is fixedly connected；
Upper valve shaft continues to rotate after rotating 90 °, and cam key applies pressure to cam keyway, and upper valve shaft drives guide sleeve pendulum
It is dynamic, so that butterfly plate sealing ring presses to valve seat, realize sealing.
Further, cavity is set between upper link block and butterfly plate, places pre-tightening apparatus in cavity, pre-tightening apparatus includes bullet
Spring abutment, spring and spring fairlead, spring pocket are arranged in spring base in spring fairlead, and spring base is installed on
Between upper link block and butterfly plate, spring fairlead is fixedly connected by screw with upper link block.
The beneficial effects of the utility model are: valve event of the present invention is divided into rotation and swings two parts, in rotation section
Point, sealing ring and valve seat do not contact, and avoid the friction between sealing ring and valve seat；In swing part, butterfly plate is in driving force
Under the action of swung around the centre of sphere of ball bearing, sealing ring vertically presses to valve seat, same between sealing ring and valve seat during this
Relative friction is not present in sample, and butterfly plate component is swung around the centre of sphere of ball bearing, and using lever principle, the swing arm of force is big, institute
Need driving torque small.In conclusion relative friction is not present in the present invention in valve whole process between sealing ring and valve seat, it can
Effectively to extend the service life of valve, while it can significantly reduce required torque during valve opening and closing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment；
A-A cross-sectional view in Fig. 1 when Fig. 2 is valve opening state；
A-A cross-sectional view in Fig. 1 when Fig. 3 is valve-closed state；
Fig. 4 is the cross-sectional view of upper valve shaft B-B in Fig. 1 in 0 ° of -90 ° of rotation process；
Fig. 5 is the cross-sectional view of B-B in Fig. 1 when upper valve shaft continues to rotate after 90 ° of rotation.
In figure: 1. valve bodies；2. butterfly plate；Valve shaft on 3.；4. lower valve shaft；5. lower cover；6. sealing ring；7. valve seat；
8. pressing plate；9. lower connecting block；10. bearing block；11. ball bearing；12. cam key；13. cam keyway；14. confined planes
1；15. cavity；16. spring；17. spring fairlead；18. spring base；19. screw；20. connector sleeve；It is connected on 21.
Block.
Specific embodiment
As shown in Fig. 1,2,3,4,5, a kind of double-acting friction-free butterfly valve, including valve body 1, butterfly plate 2, upper valve shaft 3, lower valve shaft
4, lower cover 5, the valve seat 7 on sealing ring 6 and valve body 1 on butterfly plate 2 form sealing pair, and sealing ring 6 is solid by pressing plate 8 and screw
Dingan County is connected between lower valve shaft 4 and butterfly plate 2 by lower connecting block 9 on butterfly plate 2, and lower connecting block 9 and butterfly plate 2 pass through fastening
Part is fixed, and is connected by key between lower connecting block 9 and lower valve shaft 4, and the confined planes 14 at 90 ° of intervals, lower valve shaft are arranged on lower cover 5
4 shaft end carries out 90 ° of rotations between confined planes 14, bearing block 10 is arranged between lower valve shaft 4 and valve body 1, bearing block 10 is under
Ball bearing 11 is set between valve shaft 4；
3 setting cam key 12 on upper valve shaft, upper valve shaft 3 are set with connector sleeve 20 outside, cam keyway are arranged on connector sleeve 20
13, the upper rotation of valve shaft 3 drives connector sleeve 20 to rotate, and is connected between connector sleeve 20 and butterfly plate 2 by upper link block 21, upper link block
21 are fixedly connected with connector sleeve 20 with butterfly plate 2 by fastener；
Upper valve shaft 3 continues to rotate after rotating 90 °, and cam key 12 applies pressure to cam keyway 13, and upper valve shaft 3 is with action-oriented
Set 20 is swung, so that the sealing ring 6 of butterfly plate 2 presses to valve seat 7, realizes sealing.
Further, cavity 15 is set between upper link block 21 and butterfly plate 2, places pre-tightening apparatus in cavity 15, pre-tightens dress
It sets including spring base 18, spring 16 and spring fairlead 17, spring 16 is sleeved in spring fairlead 17, and is arranged in spring
In seat 18, spring base 18 is installed between link block 21 and butterfly plate 2, and spring fairlead 17 passes through screw 19 and upper 21 pieces of connection
It is fixedly connected.
Valve from open position to closed position during be divided into two stages movement:
The first step, butterfly plate rotate 90 °, and upper valve shaft 3 drives butterfly plate to rotate 90 °, butterfly plate is logical by 12 driving torque of cam key
The connection of lower connecting block 9 is crossed, during rotating 90 °, the position of lower valve shaft 4 and lower cover 5 has position shown in Fig. 2 to go to Fig. 3
Shown position.It is complete it is in 90 ° after, lower valve shaft 4 reaches 5 restraining position of lower cover, and butterfly plate can not continue to rotate.
Second step, butterfly plate are swung, and upper valve shaft 3 continues rotation alpha °, are made at this point, upper valve shaft 3 transmits torque by cam key 12
For connector sleeve 20, but due to, the cooperation of lower valve shaft 4 and lower cover 5 reaches restraining position at this time, it can not continue to rotate, so,
Connector sleeve 20 is transferred to link block 21 and butterfly plate 2 is driven to be swung with ball bearing 11 for the rotation center of circle, and sealing ring 6 is made to press to valve
Seat 7, valve reaches final plant closure position, meanwhile, spring 16 saves up strength in the process.
Valve is with above-mentioned steps on the contrary, simultaneously, spring 16 drives butterfly when releasing stress from the closed to open position
Plate 2 moves integrally, so that sealing ring 6 lifts off a seat 7.
Claims (2)
- A kind of sealing ring 1. double-acting friction-free butterfly valve, including valve body, butterfly plate, upper valve shaft, lower valve shaft, lower cover, on butterfly plate Sealing pair is formed with the valve seat on valve body, the sealing ring is fixedly mounted on butterfly plate by pressing plate and screw, which is characterized in that Connected between the lower valve shaft and butterfly plate by lower connecting block, lower connecting block and butterfly plate fixed by fastener, lower connecting block with It is connected by key between lower valve shaft, the confined planes at 90 ° of intervals is set on the lower cover, and the shaft end of the lower valve shaft is in the limit 90 ° of rotations are carried out between plane, and bearing block is set between the lower valve shaft and valve body, is arranged between the bearing block and lower valve shaft Ball bearing；Cam key is set on the upper valve shaft, the upper valve shaft outer space is cased with connector sleeve, cam keyway is arranged on the connector sleeve, The upper valve shaft rotation drives the connector sleeve rotation, is connected between the connector sleeve and butterfly plate by upper link block, it is described on Link block is fixedly connected with the connector sleeve with butterfly plate by fastener；The upper valve shaft continues to rotate after rotating 90 °, and the cam key applies pressure, the upper valve shaft band to the cam keyway Action-oriented set is swung, so that the sealing ring of the butterfly plate presses to valve seat, realizes sealing.
- 2. double-acting friction-free butterfly valve as described in claim 1, it is characterised in that: be arranged between the upper link block and butterfly plate Cavity, the cavity is interior to place pre-tightening apparatus, and the pre-tightening apparatus includes spring base, spring and spring fairlead, the bullet Spring is sleeved in spring fairlead, and is arranged in spring base, and the spring base is installed between the upper link block and butterfly plate, The spring fairlead is fixedly connected by screw with the upper link block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821541766.0U CN208885997U (en) | 2018-09-20 | 2018-09-20 | A kind of double-acting friction-free butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821541766.0U CN208885997U (en) | 2018-09-20 | 2018-09-20 | A kind of double-acting friction-free butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885997U true CN208885997U (en) | 2019-05-21 |
Family
ID=66513287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821541766.0U Active CN208885997U (en) | 2018-09-20 | 2018-09-20 | A kind of double-acting friction-free butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916398A (en) * | 2018-09-20 | 2018-11-30 | 江苏神通阀门股份有限公司 | A kind of double-acting friction-free butterfly valve |
-
2018
- 2018-09-20 CN CN201821541766.0U patent/CN208885997U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916398A (en) * | 2018-09-20 | 2018-11-30 | 江苏神通阀门股份有限公司 | A kind of double-acting friction-free butterfly valve |
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