CN209262275U - Self-sealing butterfly valve - Google Patents
Self-sealing butterfly valve Download PDFInfo
- Publication number
- CN209262275U CN209262275U CN201620965684.3U CN201620965684U CN209262275U CN 209262275 U CN209262275 U CN 209262275U CN 201620965684 U CN201620965684 U CN 201620965684U CN 209262275 U CN209262275 U CN 209262275U
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- Prior art keywords
- valve
- self
- valve plate
- sealing lip
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 100
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 235000008429 bread Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005253 cladding Methods 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of self-sealing butterfly valves, valve body including setting fluid channel in valve body, the valve plate of cladding elastic sealing layer is set in valve body, bulb and lower bulb are set on valve plate, upper valve axis hole and lower valve axis hole are set on the outer peripheral surface of valve plate, valve plate top is connected by upper valve axis hole with the drive shaft power being rotatably connected on valve body, valve plate lower part is rotatablely connected by lower valve axis hole with the support shaft being connected on valve body, the elastic sealing layer axial direction evagination of valve plate both ends of the surface outer rim, to form the self-sealing lip that can be bonded with fluid channel inner wall at valve plate both ends of the surface outer rim；The self-sealing lip gradually thickens from the outside to the core, to make the inner ring surface inclined surface of self-sealing lip, groove is equipped on fluid channel inner wall, the groove is the arc groove that its wall surface is cambered surface, and the location of valve plate outer peripheral surface is corresponding when the position of the groove is closed with valve plate.The butterfly valve seal effect of the structure is good, and opening and closing is flexible, long service life.
Description
Technical field
The utility model relates to a kind of self-sealing butterfly valves.
Background technique
Existing centre-pivoted butterfly valve includes valve body, and fluid channel is equipped in valve body, is coated in fluid channel equipped with outer surface
The valve plate of elastic sealing layer, valve plate are equipped with the upper bulb and lower bulb being oppositely arranged, and the outer peripheral surface of valve plate, which is equipped with, to be stretched
And upper valve axis hole inside upper bulb and stretch and lower bulb inside lower valve axis hole, upper valve axis hole and lower valve axis hole are coaxially set
It sets, valve plate top is connected by upper valve axis hole with the drive shaft power being rotatably connected on valve body, and valve plate lower part passes through lower valve shaft
Hole is rotatablely connected with the support shaft being connected on valve body, the elastic sealing layer axial direction evagination of the valve plate both ends of the surface outer rim, thus
The twice self-sealing lip that can be bonded with fluid channel inner wall is formed at valve plate both ends of the surface outer rim；The self-sealing lip is from the outside to the core
It gradually thickens, to make the inner ring surface inclined surface of the self-sealing lip.The butterfly valve of above structure, valve plate and fluid channel use
Micro interference fit can satisfy the low pressure seal of fluid, with gradually increasing for fluid channel fluid pressure, fluid compression
Self-sealing lip, since the inner ring surface of self-sealing lip is inclined surface, self-sealing lip generates radial component, makes from close after by fluid compression
Envelope lip is fitted closely with fluid channel inner wall, to form self-sealing.
The butterfly valve of above structure, although sealing effect is good, there is also following disadvantages: frictional force is big, and opening and closing torque is big,
Abrasion is big, and valve service life is short.Trace it to its cause and essentially consist in: above-mentioned self-sealing lip forms closed annular on valve plate end face
Structure forms a circle self-sealing lip along valve plate body end face outer rim, although the self-sealing lip seal effect of above-mentioned cyclic structure
Preferably, it but since valve plate body outer peripheral surface region area corresponding with upper bulb and lower bulb itself is larger, adds
Self-sealing lip, area can be increased further, to increase the contact area of above-mentioned zone and body cavity, certainly will increase friction
Power and the unlatching moment for further resulting in valve, not only cause valve opening and closing laborious, and the abrasion for also causing above-mentioned zone adds
Play makes the reduced service life of valve.
Summary of the invention
The technical problems to be solved in the utility model is in view of the foregoing drawbacks, to provide that a kind of sealing effect is good, valve opening and closing
Torque is small and wears small self-sealing butterfly valve.
In order to solve the above-mentioned technical problem, self-sealing butterfly valve provided by the utility model, including valve body, valve body is interior to be equipped with stream
Body channel, is coated with the valve plate of elastic sealing layer in fluid channel equipped with outer surface, valve plate be equipped be oppositely arranged on expand
Portion and lower bulb, the outer peripheral surface of valve plate be equipped with stretch and upper bulb inside upper valve axis hole and stretch and lower bulb inside
Lower valve axis hole, upper valve axis hole and the coaxial arrangement of lower valve axis hole, valve plate top is by upper valve axis hole and is rotatably connected on valve body
Drive shaft power is connected, and valve plate lower part is rotatablely connected by lower valve axis hole with the support shaft being connected on valve body, the valve plate two
The elastic sealing layer axial direction evagination of end face outer rim, so that being formed at valve plate both ends of the surface outer rim can be bonded with fluid channel inner wall
Self-sealing lip；The self-sealing lip gradually thickens from the outside to the core, to make the inner ring surface inclined surface of the self-sealing lip, ties
Structure feature is: groove is equipped on the fluid channel inner wall, the groove is the arc groove that its wall surface is cambered surface, described
The location of valve plate outer peripheral surface is corresponding when the position of groove is closed with valve plate.
Groove is equipped on fluid channel inner wall, and annular groove is the arc groove that its wall surface is cambered surface, such groove
Diameter change rule are as follows: the minimum point of groove is diameter maximum, is then gradually become smaller to two sides until with fluid channel internal diameter
Unanimously.When valve plate is closed, during progressing into groove with the rotation of valve plate, the outer edge of valve plate end face undergo one by
Tightly gradually pine again by pine gradually tight process, that is to say, that fluid channel inner wall is short to the serious process of the extruding of valve plate, squeezes degree
Gently, the defect that fluid channel inner wall is long to valve plate severe crush process duration, extruding degree is heavy in the prior art is avoided,
Thus the utility model has the advantages that open and close that torque is small, wears less and long service life.After valve plate is closed, the wall surface pair of groove
Valve plate, which squeeze, can make in the wall surface of its circumferential surface elastic sealing layer and self-sealing lip and groove and the fluid channel where groove
Wall fits closely, therefore sealing effect is also very good.Relatively labor-saving, same reason when valve plate is closed, when valve plate is opened
It is relatively labor-saving.
In order to valve plate rotation it is more smooth, the cell wall of the groove and fluid channel inner wall are set as seamlessly transitting.
In order to further decrease opening and closing torque and reduce abrasion, following improvement is done based on the above technical solution: institute
Self-sealing lip is stated by being located at the left self-sealing lip and right self-sealing lip structure of the axial line two sides of upper valve axis hole and lower valve axis hole
At；In the orthographic projection view of the end face of valve plate, the line at the upper end of left self-sealing lip and right self-sealing lip and valve plate center it
Between form the upper angle that set angle is α, shape between the line of the lower end and valve plate center of left self-sealing lip and right self-sealing lip
The lower angle for being β at set angle.
The angle of the lower angle is more than or equal to upper angle.
It is symmetrical arranged on the basis of the axial line of the left self-sealing lip and the above valve shaft hole of right self-sealing lip and lower valve axis hole.
The outer peripheral surface of the elastic sealing layer being coated on valve plate outer peripheral surface is equipped with annular groove.
The upper folder that set angle is α is formed between the line of the upper end and valve plate center of left self-sealing lip and right self-sealing lip
Angle forms the lower angle that set angle is β between the line of the lower end and valve plate center of left self-sealing lip and right self-sealing lip；On
The set-up mode for stating left self-sealing lip and right self-sealing lip can be such that left self-sealing lip and right self-sealing lip is not closed, upper and lower swollen
There is a notch, that is, upper and lower bulb at big portion and do not set self-sealing lip in the axially projecting biggish section of valve plate, in this way may be used
With reduce the area of the valve plate outer peripheral surface of upper and lower bulb corresponding position reduce with the contact area of fluid channel inner wall, can have
Effect reduces frictional force and then reduces valve opening and closing torque and abrasion, so that valve not only opens and closes more flexible, and can extend use
Service life.And area itself is larger i.e. larger with the contact area of fluid channel inner wall at upper and lower bulb, is not required here from close
Envelope lip can realize sealing well.
In conclusion the utility model has the advantage that 1, achievable self-sealing, sealing effect are good；2, torque is opened and closed
Small, opening and closing flexibly, wears small, valve long service life；3, can be used for opening and closing frequent pipe-line system.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of the line A-A along Fig. 1；
Fig. 3 is the structural schematic diagram for removing valve plate rear valve body in Fig. 2；
Fig. 4 is the structural schematic diagram of valve plate shown in Fig. 1；
Fig. 5 is the cross-sectional view of the line B-B along Fig. 4；
Fig. 6 is the cross-sectional view of the line C-C along Fig. 4.
Specific embodiment
Referring to Fig.1, Fig. 2, Fig. 3 and Fig. 5, self-sealing butterfly valve provided by the utility model include valve body 1, are equipped in valve body
Fluid channel 2；Groove 11 is equipped on 2 inner wall of fluid channel, the groove 11 is the arc groove that its wall surface is cambered surface, i.e. institute
(referring to Fig. 3) after the axial cutting of valve body 1, the range line profile of the groove 11 that is, bus for forming groove 11 is camber line, arc
Bus around the inner cavity of valve body 1 axis, that is, fluid channel 2 axis rotation can be formed wall surface be cambered surface groove 11；Groove 11
Position and valve plate 4 the location of valve plate outer peripheral surface corresponding (referring to figure 1 and figure 2) when closing；The cell wall of groove 11
With 2 interior walls be smooth transition of fluid channel.The valve plate 4 of elastic sealing layer 3 is coated in fluid channel 2 equipped with outer surface, on valve plate 4
Equipped with the upper bulb 5 and lower bulb 6 being oppositely arranged, the outer peripheral surface of valve plate 4 be equipped with stretch and upper bulb 5 inside upper valve
Axis hole 12 and stretch and lower bulb 6 inside lower valve axis hole 13, upper valve axis hole 12 and lower valve axis hole 13 are coaxially disposed, on valve plate 4
Portion is connected by upper valve axis hole 12 with 7 power of drive shaft being rotatably connected on valve body 1, and 4 lower part of valve plate passes through lower valve axis hole 13
It is rotatablely connected with the support shaft 8 being connected on valve body.The axial evagination of the elastic sealing layer 3 of the 4 both ends of the surface outer rim of valve plate, thus
The self-sealing lip 9 that can be bonded with 2 inner wall of fluid channel is formed at 4 both ends of the surface outer rim of valve plate；The self-sealing lip 9 is from the outside to the core
It gradually thickens, to make 10 inclined surface of inner ring surface of the self-sealing lip 9.
Enclosed construction can be set into the self-sealing lip 9, i.e. 4 both ends of the surface outer rim of ring valve plate respectively forms a circle self-sealing
Lip 9.But the contact area since the area at upper bulb 5 and lower bulb 6 is larger, with 2 inner wall of fluid channel itself
With regard to bigger, if setting self-sealing lip again herein, just certainly will be bigger contact area with 2 inner wall of fluid channel, to make
Become larger at frictional force and increased wear.In order to eliminate this defect, following improvement done to self-sealing lip 9: referring to Fig. 4, Fig. 5 and
Fig. 6, the self-sealing lip 9 is by being located at the left self-sealing lips 91 of 14 two sides of axial line of upper valve axis hole 12 and lower valve axis hole 13
It is constituted with right self-sealing lip 92；In orthographic projection view, that is, Fig. 4 of the end face of valve plate 4, in left 91 upper end of self-sealing lip and valve plate 4
The line of the heart is upper left line 15, and the upper end of right self-sealing lip 92 and the line at 4 center of valve plate are upper right line 16, upper left line
The upper angle that set angle is α is formed between 15 and upper right line 16.The line of left 91 lower end of self-sealing lip and 4 center of valve plate is
Lower-left line 17, the lower end of right self-sealing lip 92 and the line at 4 center of valve plate are bottom right line 18, and lower-left line 17 and bottom right connect
The lower angle that set angle is β is formed between line 18.The appearance of upper angle and lower angle can make left self-sealing lip 91 with right from close
Envelope lip 92 is not closed, and occurs a notch, that is, upper and lower bulb at upper and lower bulb in the axially projecting biggish section of valve plate
On do not set self-sealing lip, can reduce in this way the valve plate outer peripheral surface of upper and lower bulb corresponding position area reduce it is logical with fluid
The contact area of road inner wall can effectively reduce frictional force and then reduce valve opening and closing torque and abrasion, so that valve not only opens and closes
It is more flexible, and can prolong the service life.The size of upper angle α and lower angle β can be according to upper bulb 5 and lower bulbs 6
Depending on size.Since valve plate has self weight, compression is larger at bulb under valve plate, therefore the angle of the lower angle can be made to be greater than
The upper angle can effectively reduce wear at bulb with the contact area of body cavity, better reduce under valve plate in this way
And frictional force, valve opening can be made more flexible；The set-up mode that the lower angle is greater than the upper angle is more advantageous to big specification
Valve, the valve small for specification can be equal to the set-up mode of the upper angle using the angle of the lower angle.In order to just
In the opening and closing uniform force of simple processing and valve plate, the left self-sealing lip 91 and the valve shaft hole 12 preferably above of right self-sealing lip 92
It is symmetrical arranged on the basis of the axial line 14 of lower valve axis hole 13.When rotational valve plate opens and closes butterfly valve, it is coated on 4 outer peripheral surface of valve plate
Elastic sealing layer 3 can with valve channel occur squeeze and generate moderate finite deformation, in order to make deformation have Free up Memory, be coated on
Annular groove 19 is set on the outer peripheral surface of elastic sealing layer on valve plate outer peripheral surface, due to the setting of annular groove 19, deformation is made just to have release
Space, therefore can reduce frictional force and abrasion, it not only can reduce open and close torque, and the use longevity of butterfly valve can be extended
Life.
Claims (6)
1. a kind of self-sealing butterfly valve, including valve body (1), valve body is interior to be equipped with fluid channel (2), appearance is equipped in fluid channel (2)
Bread is covered with the valve plate (4) of elastic sealing layer (3), and valve plate (4) is equipped with the upper bulb (5) and lower bulb being oppositely arranged
(6), the outer peripheral surface of valve plate (4), which is equipped with, stretches and upper valve axis hole that upper bulb (2) is internal and stretches and lower bulb (3) is internal
Lower valve axis hole, upper valve axis hole and the coaxial arrangement of lower valve axis hole, valve plate (4) top is by upper valve axis hole and is rotatably connected on valve body
(1) drive shaft (7) power on is connected, and valve plate (4) lower part is rotated by lower valve axis hole with the support shaft (8) being connected on valve body
Connection, the axial evagination of the elastic sealing layer (3) of valve plate (4) the both ends of the surface outer rim, thus the shape at valve plate (4) both ends of the surface outer rim
The self-sealing lip (9) of Cheng Nengyu fluid channel (2) inner wall fitting；The self-sealing lip (9) gradually thickens from the outside to the core, to make
The inner ring surface (10) of the self-sealing lip (9) is inclined surface, it is characterised in that: is equipped on fluid channel (2) inner wall recessed
Slot (11), the groove (11) is the arc groove that its wall surface is cambered surface, when the position and valve plate (4) of the groove (11) are closed
The location of valve plate outer peripheral surface is corresponding.
2. self-sealing butterfly valve as described in claim 1, it is characterised in that in the cell wall of the groove (11) and fluid channel (2)
Wall smooth transition.
3. self-sealing butterfly valve as claimed in claim 1 or 2, it is characterised in that the self-sealing lip (9) is by being located at upper valve
The left self-sealing lip (91) of the axial line two sides of axis hole and lower valve axis hole and right self-sealing lip (92) are constituted；Left self-sealing lip (91)
And right self-sealing lip (92) upper end and valve plate (4) center line between formed set angle be α upper angle, left self-sealing
The lower angle that set angle is β is formed between the line of the lower end and valve plate (4) center of lip (91) and right self-sealing lip (92).
4. self-sealing butterfly valve according to claim 3, it is characterised in that: the angle of the lower angle is more than or equal to upper folder
Angle.
5. self-sealing butterfly valve according to claim 4, it is characterised in that: the left self-sealing lip (91) and right self-sealing lip
(92) it is symmetrical arranged on the basis of the axial line of the above valve shaft hole and lower valve axis hole.
6. self-sealing butterfly valve according to claim 5, it is characterised in that: the elasticity being coated on valve plate outer peripheral surface is close
The outer peripheral surface of sealing (3) is equipped with annular groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620965684.3U CN209262275U (en) | 2016-08-29 | 2016-08-29 | Self-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620965684.3U CN209262275U (en) | 2016-08-29 | 2016-08-29 | Self-sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209262275U true CN209262275U (en) | 2019-08-16 |
Family
ID=67555778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620965684.3U Active CN209262275U (en) | 2016-08-29 | 2016-08-29 | Self-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209262275U (en) |
-
2016
- 2016-08-29 CN CN201620965684.3U patent/CN209262275U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |