CN109737209A - A kind of protection against erosion butterfly valve - Google Patents
A kind of protection against erosion butterfly valve Download PDFInfo
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- CN109737209A CN109737209A CN201910169433.2A CN201910169433A CN109737209A CN 109737209 A CN109737209 A CN 109737209A CN 201910169433 A CN201910169433 A CN 201910169433A CN 109737209 A CN109737209 A CN 109737209A
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Abstract
The invention belongs to valve technology fields, and in particular to a kind of protection against erosion butterfly valve, including pressing plate, valve shaft, sealing structure, valve body and dish plate；Dish plate is located in valve body, and valve shaft upper end is equipped with manipulation device, and manipulation device is used to control the folding of dish plate；It is equipped with a No.1 annular groove among valve shaft, opens up several apertures on the valve plate of No.1 annular groove side, aperture is in communication with the outside；Pressing plate is several, and pressing plate is uniformly distributed in dish plate side, and pressing plate one end and dish plate one end end are hinged, and the pressing plate other end is fixed with fixing axle；Rigidity rope one end is fixedly connected with fixing axle, and rigidity is restricted on the fixed No.1 annular groove being wrapped in valve shaft of the other end；Dish plate side wall is equipped with No. two annular grooves, two No.1 sealing rings is fixedly connected on No. two annular groove two sidewalls, and there are gaps for No.1 sealing interannular.
Description
Technical field
The invention belongs to valve technology fields, and in particular to a kind of protection against erosion butterfly valve.
Background technique
Butterfly valve is one of valve with fastest developing speed in the past 30 years, and structure includes valve body, butterfly plate, valve shaft and sealing ring, butterfly
Valve bias is placed in valve body, and valve shaft is eccentrically set on butterfly plate, controls the folding of butterfly plate, has sealing ring on the periphery of butterfly plate, close
Seal is fixed with sealing ring pressing plate, plays sealing function in closure valve；But because the butterfly plate sealing ring of most butterfly valves is
It is formed by stacking by metal plate and graphite plate, is washed away in valve wide open by swiftly flowing medium, often because of interlayer
In graphite be washed out, keep sealing ring loose and valve caused to lose sealing performance, so limiting the valve in some systems
In application.
There are many butterfly valves in the prior art, as application No. is one kind disclosed in 2012102370818 a Chinese patent
Protection against erosion butterfly valve, the butterfly valve structure is complicated, and sealing ring pressing plate length is unadjustable, and erosion control brushing effects are poor；And sealing ring pressing plate exists
When butterfly valve is closed, fluid impact sealing ring pressing plate, sealing ring pressing plate squeezes valve body, increases the abrasion of valve body, reduces erosion control
The effect of brush.
Summary of the invention
The present invention in order to solve valve body, dish plate and sealing structure by fluid scouring, wear by surface, reduces sealing effect
The problems such as fruit, reduction butterfly valve service life, the present invention provides a kind of protection against erosion butterfly valve.
The technical solution adopted by the present invention to solve the technical problems is: a kind of protection against erosion butterfly valve of the present invention, packet
Include pressing plate, valve shaft, sealing structure, valve body and dish plate；The dish plate is located in valve body, and valve shaft upper end is equipped with manipulation device, manipulation
Device is used to control the folding of dish plate；A No.1 annular groove is equipped among the valve shaft, on the valve plate of No.1 annular groove side
Several apertures are opened up, aperture is in communication with the outside；The pressing plate is several, and pressing plate is uniformly distributed in dish plate side, pressing plate one
End is hinged with dish plate one end end, and the pressing plate other end is fixed with fixing axle；Rigidity rope one end is fixedly connected with fixing axle,
On the fixed No.1 annular groove being wrapped in valve shaft of the rigidity rope other end；Dish plate side wall is equipped with No. two annular grooves, No. two annulars
Two No.1 sealing rings are fixedly connected on slot two sidewalls, and there are gaps for No.1 sealing interannular.After butterfly valve is opened, fluid flow through valve
Body, water impact pressing plate make valve plate on being tightly attached to dish plate side wall, and water flow is avoided directly to wash away No.1 sealing ring and dish plate side
Wall protects No.1 sealing ring, so that valve is adapted to the operating condition of high flow rate fluid, extend the service life of valve；Butterfly valve is closed
When, when controlling the closing of dish plate by manipulation device, rigidity rope is wrapped on No.1 annular groove, and rigidity rope tension drops pressing plate rotation
Turn, makes pressing plate fluid can be stopped directly to wash away No.1 sealing ring when butterfly valve is opened, butterfly valve does not influence dish plate and valve when closed
Sealing between body extends the service life of butterfly valve while guaranteeing that butterfly valve works normally.
Preferably, the pressing plate is made of No.1 plate, No. two plates and No.1 spring；It is hollow setting in the No.1 plate,
No. two plate one end are protruded into No.1 plate, and No. two plate ends are fixedly connected by No.1 spring with No.1 plate.When butterfly valve is opened, if
Fluid flow rate is small, and it is heeling condition that fluid forces pressing plate is swung to fluid flow direction, when the pressing plate of fluid scouring heeling condition,
There is a thrust obliquely to pressing plate, stretches out No. two plates, increase the length of pressing plate；Fluid continues to wash away No. two plates, makes
Pressing plate is swung in valve body, slows down water impact in the power on the surface of No.1 sealing ring and dish plate, pressing plate is in fluid scouring one
Play the role of buffering when number sealing ring and dish plate surface, protects valve plate and No.1 sealing ring, extend the use of valve
Service life；If fluid flow rate is big, fluid forces pressing plate compresses valve plate, makes No. two annular groove sealings, avoids in No. two annular grooves
No.1 sealing ring is washed away by water, No.1 sealing ring and No. two annular groove sidewalls is protected, while guaranteeing that butterfly valve works normally
Extend the service life of butterfly valve；When the pressing plate of fluid scouring heeling condition, there is a thrust obliquely to pressing plate, make No. two
Plate stretches out, and increases the length of pressing plate, prevents water flow from washing away valve plate surface, protect valve plate, valve is made to adapt to high flow rate
The operating condition of fluid extends the service life of valve.
Preferably, No. two sealing rings are equipped among the No.1 sealing ring；No. two sealing rings by No. two springs with
Side wall of No. two annular grooves close to dish plate center of circle side is fixedly connected.After butterfly valve is opened, if fluid flow rate is small, fluid scouring pressure
Plate, pressing plate are swung in valve body, and water squeezes No. two sealing rings, and No. two sealing rings is made to squeeze No.1 sealing ring, realize No.1 sealing
The sealing of ring and No. two sealing interannulars, avoids fluid scouring No.1 sealing ring, protects No.1 sealing ring, is guaranteeing that butterfly valve is normal
The service life of butterfly valve is extended while work；When water squeezes No. two sealing rings, No. two sealing ring deformations increase No. two sealings
The extruding force of ring and No.1 sealing interannular, improves the sealing effect of No.1 sealing ring and No. two sealing interannulars, further prevents
Butterfly valve leak.
Preferably, dish plate side is equipped with L-type plate, and L-type plate end is fixedly connected with buckle；No. two plates, which are equipped with, to be slided
Slot.When butterfly valve is opened, the rotation of fluid impact pressing plate makes to snap into sliding slot, and segment fluid flow when fluid turbulence is avoided to flow back
Pressing plate revolution is stirred, the stability of pressing plate is increased, avoids fluid scouring No.1 sealing ring and No. two sealing rings, improve pressure
Protection of the plate to No.1 sealing ring and No. two sealing interannulars, extends the service life of butterfly valve.
Preferably, described when snapping into sliding slot, buckling end and sliding slot, there are skies far from having between buckle side side wall
Chamber.When butterfly valve is normally opened, buckle covers in sliding slot, and when fluid flow rate is unstable, the power of fluid scouring pressing plate changes, buckle
Cavity between sliding slot prevents pressing plate stuck, move buckle can in sliding slot, buckles mobile band dynamic pressure plate and swings, weakens
The power of fluid scouring pressing plate is buckled in movement in sliding slot and plays buffer function to pressing plate, protects pressing plate, avoid fluid
No.1 sealing ring and No. two sealing rings are washed away, and then protect butterfly valve, extends the service life of butterfly valve.
Preferably, be slidably installed cutting ferrule in the sliding slot；The cutting ferrule is fixedly connected by No. three springs with No. two plates；Card
Set contacts that a side surface is smooth, and cutting ferrule inner surface is made of rubber with sliding slot, and cutting ferrule inner surface is equipped with hairbrush.Cutting ferrule appearance
Face is smooth, and when being buckled in sliding in sliding slot, buckle drives cutting ferrule to slide together, when avoiding buckle sliding directly with sliding slot inner wall
Contact, avoid the abrasion of snap surface, ensure that buckle can be stuck in sliding slot, with prevent fluid scouring No.1 sealing ring,
No. two sealing rings and dish plate, and then butterfly valve is protected, extend the service life of butterfly valve；Cutting ferrule inner surface is equipped with hairbrush, makes card
Retaining ring is more easier when entering cutting ferrule, and cutting ferrule inner surface is made of rubber, and buckle end is greater than buckle arrival end, cutting ferrule inner surface
It is compressible, it ensure that buckle can be inserted in cutting ferrule.
Preferably, the No.1 sealing ring is equipped with annular through groove close to side.When butterfly valve is closed, set on No.1 sealing ring
There is an annular through groove, when fluid compression No.1 sealing ring, the circumferential No. two sealing ring sides inclination of No.1 sealing, compression increase one
The extruding forces of number sealing ring and No. two sealing interannulars improve the leakproofness that No.1 sealing ring seals interannulars with No. two, Jin Erti
The high sealing effect of gate valve.
Beneficial effects of the present invention are as follows:
1. a kind of protection against erosion butterfly valve of the present invention when opening butterfly valve, avoids flowing by the cooperation of dish plate and pressing plate
Body washes away No.1 sealing ring, No. two sealing rings and dish plate, protects butterfly valve, extends butterfly while guaranteeing that butterfly valve works normally
The service life of valve.
2. a kind of protection against erosion butterfly valve of the present invention, pressing plate includes No.1 plate, No. two plates and spring, when fluid scouring two
When number plate ends, No. two plates are stretched out, the length of No. two plates is increased, water flow is prevented to protect valve plate from washing away valve plate surface,
So that valve is adapted to the operating condition of high flow rate fluid, extends the service life of valve.
3. a kind of protection against erosion butterfly valve of the present invention makes buckle drive card by the cooperation between cutting ferrule, buckle and sliding slot
It covers and is slided in sliding slot, protect pressing plate, avoid fluid and No.1 sealing ring and No. two sealing rings are washed away, protect butterfly
Valve；And buckle drives cutting ferrule to slide together, directly contacts with sliding slot inner wall when avoiding buckle sliding, avoids snap surface
Abrasion, ensure that buckle can be stuck in sliding slot, to prevent fluid scouring No.1 sealing ring, No. two sealing rings and dish plate, in turn
Butterfly valve is protected, the service life of butterfly valve is extended.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is top view when butterfly valve is opened；
Fig. 3 is B-B cross-sectional view in Fig. 2；
Fig. 4 is the connection schematic diagram of buckle with cutting ferrule；
Fig. 5 is A direction view in Fig. 1；
Fig. 6 is the location diagram of pressing plate and No.1 sealing interannular；
In figure: pressing plate 1, No.1 plate 11, No. two plates 12, valve shaft 2, No.1 annular groove 21, No.1 sealing rings 3, annular through groove
31, valve body 4, dish plate 5,6, No. two sealing rings 7 of rigidity rope, L-type plate 8, buckle 81, sliding slot 82, cutting ferrule 83.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
As shown in Figures 1 to 6, a kind of protection against erosion butterfly valve of the present invention, including pressing plate 1, valve shaft 2, No.1 sealing ring
3, valve body 4 and dish plate 5；The dish plate 5 is located in valve body 4, and 2 upper end of valve shaft is equipped with manipulation device, and manipulation device is for controlling dish
The folding of plate 5；It is equipped with a No.1 annular groove 21 among the valve shaft 2, is opened up on the valve plate of 21 side of No.1 annular groove several
A aperture, aperture are in communication with the outside；The pressing plate 1 is several, and pressing plate 1 is uniformly distributed in 5 side of dish plate, 1 one end of pressing plate with
5 one end end of dish plate is hinged, and 1 other end of pressing plate is fixed with fixing axle；6 one end of the rigidity rope are fixedly connected with fixing axle,
On the fixed No.1 annular groove 21 being wrapped in valve shaft 2 of rigidity 6 other ends of rope；5 side wall of dish plate is equipped with No. two annular grooves,
Two No.1 sealing rings 3 are fixedly connected on No. two annular groove two sidewalls, and there are gaps between No.1 sealing ring 3.After butterfly valve is opened,
Fluid flow through valve body 4, water impact pressing plate 1 make valve plate on being tightly attached to 5 side wall of dish plate, avoid water flow from directly washing away No.1 close
5 side wall of seal ring 3 and dish plate protects No.1 sealing ring 3, so that valve is adapted to the operating condition of high flow rate fluid, extend making for valve
Use the service life；When butterfly valve is closed, when controlling the closing of dish plate 5 by manipulation device, rigidity rope 6 is wrapped on No.1 annular groove 21, just
Property rope 6 tension drop pressing plate 1 rotation, make pressing plate 1 butterfly valve open when fluid can be stopped directly to wash away No.1 sealing ring 3, butterfly valve
The sealing between dish plate 5 and valve body 4 is not influenced when closed, butterfly valve is extended while guaranteeing that butterfly valve works normally uses the longevity
Life.
As one embodiment of the present invention, the pressing plate 1 is made of 11, No. two plates 12 of No.1 plate and No.1 spring；
It is hollow setting in the No.1 plate 11, No. two 12 one end of plate are protruded into No.1 plate 11, and No. two 12 ends of plate pass through No.1 bullet
Spring is fixedly connected with No.1 plate 11.When butterfly valve is opened, if fluid flow rate is small, fluid forces pressing plate 1 is swung to fluid flow direction
For heeling condition, when the pressing plate 1 of fluid scouring heeling condition, there is a thrust obliquely to pressing plate 1, stretch No. two plates 12
Out, the length of pressing plate 1 is increased；Fluid continues to wash away No. two plates 12, swings pressing plate 1 in valve body 4, slows down water impact
Power on the surface of No.1 sealing ring 3 and dish plate 5, pressing plate 1 are played in fluid scouring No.1 sealing ring 3 and dish 5 surface of plate
The effect of buffering protects valve plate and No.1 sealing ring 3, extends the service life of butterfly valve；If fluid flow rate is big, fluid forces
Pressing plate 1 compresses valve plate, makes No. two annular groove sealings, and the No.1 sealing ring 3 avoided in No. two annular grooves is washed away by water, protected
No.1 sealing ring 3 and No. two annular groove sidewalls, extend the service life of butterfly valve while guaranteeing that butterfly valve works normally；Fluid
When washing away the pressing plate 1 of heeling condition, there is a thrust obliquely to pressing plate 1, stretches out No. two plates 12, increase pressing plate 1
Length prevents water flow from washing away valve plate surface, protects valve plate, so that valve is adapted to the operating condition of high flow rate fluid, extend valve
The service life of door.
As one embodiment of the present invention, No. two sealing rings 7 are equipped among the No.1 sealing ring 3；Described No. two
Side wall of the sealing ring 7 by No. two springs with No. two annular grooves close to 5 center of circle side of dish plate is fixedly connected.After butterfly valve is opened, if
Fluid flow rate is small, and fluid scouring pressing plate 1, pressing plate 1 is swung in valve body 4, and water squeezes No. two sealing rings 7, squeezes No. two sealing rings 7
No.1 sealing ring 3 is pressed, the sealing between No.1 sealing ring 3 and No. two sealing rings 7 is realized, avoids fluid scouring No.1 sealing ring 3, is protected
No.1 sealing ring 3 has been protected, the service life of butterfly valve is extended while guaranteeing that butterfly valve works normally；Water squeezes No. two sealing rings
When 7, No. two sealing rings 7 are deformed, and are increased the extruding force between No. two sealing rings 7 and No.1 sealing ring 3, are improved No.1 sealing ring 3
Sealing effect between No. two sealing rings 7, has further prevented butterfly valve leak.
As one embodiment of the present invention, 5 side of dish plate is equipped with L-type plate 8, and 8 end of L-type plate is fixedly connected with card
Button 81；No. two plates 12 are equipped with sliding slot 82.When butterfly valve is opened, fluid impact pressing plate 1 rotates, and buckle 81 is made to snap into sliding slot
In 82, avoids segment fluid flow reflux when fluid turbulence from stirring the revolution of pressing plate 1, increase the stability of pressing plate 1, avoid fluid punching
Brush No.1 sealing ring 3 and No. two sealing rings 7 improve pressing plate 1 to the protection between No.1 sealing ring 3 and No. two sealing rings 7, extend
The service life of butterfly valve.
As one embodiment of the present invention, when the buckle 81 is snapped into sliding slot 82,81 ends of buckle and sliding slot 82
Far from having between 81 side side walls of buckle, there are cavitys 84.When butterfly valve is normally opened, 81 sets are buckled in sliding slot 82, when fluid flow rate shakiness
Periodically, the power of fluid scouring pressing plate 1 changes, and the cavity 84 between buckle 81 and sliding slot 82 prevents pressing plate 1 stuck, makes buckle 81
It can be moved in sliding slot 82, the mobile band dynamic pressure plate 1 of buckle 81 is swung, and reduces the power of fluid scouring pressing plate 1, and buckle 81 exists
Movement plays buffer function to pressing plate 1 in sliding slot 82, protects pressing plate 1, it is close to No.1 sealing ring 3 and No. two to avoid fluid
Seal ring 7 is washed away, and then protects butterfly valve, extends the service life of butterfly valve.
As one embodiment of the present invention, be slidably installed cutting ferrule 83 in the sliding slot 82；The cutting ferrule 83 passes through three
Number spring is fixedly connected with No. two plates 12；It is smooth that cutting ferrule 83 contacts a side surface with sliding slot 82, and 83 inner surface of cutting ferrule is rubber system
At, and 83 inner surface of cutting ferrule is equipped with hairbrush.83 smooth outer surface of cutting ferrule when buckle 81 slides in sliding slot 82, buckles 81 bands
Dynamic cutting ferrule 83 slides together, directly contacts with 82 inner wall of sliding slot when avoiding 81 sliding of buckle, avoids the mill on 81 surfaces of buckle
Damage ensure that buckle 81 can be stuck in sliding slot 82, to prevent 3, No. two sealing rings 7 of fluid scouring No.1 sealing ring and dish plate 5,
And then butterfly valve is protected, extend the service life of butterfly valve；83 inner surface of cutting ferrule is equipped with hairbrush, when buckle 81 being made to be inserted in cutting ferrule 83
It is more easier, and 83 inner surface of cutting ferrule is made of rubber, 81 ends of buckle are greater than 81 arrival ends of buckle, and 83 inner surface of cutting ferrule can press
Contracting ensure that buckle 81 can be inserted in cutting ferrule 83.
As one embodiment of the present invention, the No.1 sealing ring 3 is equipped with annular through groove 31 close to side.Butterfly valve
When closing, No.1 sealing ring 3 is equipped with annular through groove 31, and when fluid compression No.1 sealing ring 3, No.1 sealing ring 3 is close to No. two
The inclination of 7 side of seal ring, compression, increase the extruding force between No.1 sealing ring 3 and No. two sealing rings 7, improve No.1 sealing ring 3
With the leakproofness between No. two sealing rings 7, and then the sealing effect of gate valve is improved.
Specific workflow is as follows:
When work, after butterfly valve is opened, fluid flow through valve body 4, water impact pressing plate 1 makes valve plate be tightly attached to 5 side wall of dish plate
On, it avoids water flow from directly washing away 5 side wall of No.1 sealing ring 3 and dish plate, protects No.1 sealing ring 3, valve is made to adapt to high flow rate
The operating condition of fluid extends the service life of valve；When butterfly valve is closed, when controlling the closing of dish plate 5 by manipulation device, rigidity is restricted
6 are wrapped on No.1 annular groove 21, and rigidity rope 6, which tenses, drops the rotation of pressing plate 1, make pressing plate 1 that can stop fluid when butterfly valve is opened
No.1 sealing ring 3 directly is washed away, butterfly valve does not influence the sealing between dish plate 5 and valve body 4 when closed, is guaranteeing butterfly valve normal work
While extend the service life of butterfly valve；When butterfly valve is opened, if fluid flow rate is small, fluid forces pressing plate 1 is to fluid flowing side
It is heeling condition to swinging, when the pressing plate 1 of fluid scouring heeling condition, has a thrust obliquely to pressing plate 1, make No. two plates
12 stretch out, and increase the length of pressing plate 1；Fluid continues to wash away No. two plates 12, swings pressing plate 1 in valve body 4, slows down water flow
The power on the surface of No.1 sealing ring 3 and dish plate 5 is impacted, from pressing plate 1 is in fluid scouring No.1 sealing ring 3 and dish 5 surface of plate
The effect for having arrived buffering, protects valve plate and No.1 sealing ring 3, extends the service life of valve；If fluid flow rate is big, fluid
It pushes pressing plate 1 to compress valve plate, makes No. two annular groove sealings, the No.1 sealing ring 3 avoided in No. two annular grooves is washed away by water, protected
No.1 sealing ring 3 and No. two annular groove sidewalls have been protected, the service life of butterfly valve is extended while guaranteeing that butterfly valve works normally；
When the pressing plate 1 of fluid scouring heeling condition, there is a thrust obliquely to pressing plate 1, stretches out No. two plates 12, increase pressing plate
1 length prevents water flow from washing away valve plate surface, protects valve plate, so that valve is adapted to the operating condition of high flow rate fluid, extend
The service life of valve；After butterfly valve is opened, if fluid flow rate is small, fluid scouring pressing plate 1, pressing plate 1 is swung in valve body 4, and water squeezes
No. two sealing rings 7 are pressed, No. two sealing rings 7 is made to squeeze No.1 sealing ring 3, are realized close between No.1 sealing ring 3 and No. two sealing rings 7
Envelope, avoids fluid scouring No.1 sealing ring 3, protects No.1 sealing ring 3, extends butterfly while guaranteeing that butterfly valve works normally
The service life of valve；When water squeezes No. two sealing rings 7, No. two sealing rings 7 are deformed, and increase No. two sealing rings 7 and No.1 sealing ring 3
Between extruding force, improve the sealing effect between No.1 sealing ring 3 and No. two sealing rings 7, further prevented butterfly valve leak；When
When butterfly valve is opened, fluid impact pressing plate 1 rotates, and snaps into buckle 81 in sliding slot 82, and segment fluid flow when fluid turbulence is avoided to flow back
The revolution of pressing plate 1 is stirred, the stability of pressing plate 1 is increased, avoids fluid scouring No.1 sealing ring 3 and No. two sealing rings 7, is improved
Pressing plate 1 extends the service life of butterfly valve to the protection between No.1 sealing ring 3 and No. two sealing rings 7；When butterfly valve is normally opened, card
81 sets of button is in sliding slot 82, and when fluid flow rate is unstable, the power of fluid scouring pressing plate 1 changes, buckle 81 and sliding slot 82
Between cavity 84 prevent pressing plate 1 stuck, move buckle 81 can in sliding slot 82, the mobile band dynamic pressure plates 1 of buckle 81 are swung,
The power of fluid scouring pressing plate 1 is reduced, the movement in sliding slot 82 of buckle 81 plays buffer function to pressing plate 1, protects pressing plate
1, fluid washing away to No.1 sealing ring 3 and No. two sealing rings 7 is avoided, and then protect butterfly valve, extends the use of butterfly valve
Service life；83 smooth outer surface of cutting ferrule, when buckle 81 slides in sliding slot 82,81 drive cutting ferrule 83 of buckle slides together, avoids
It is directly contacted with 82 inner wall of sliding slot when 81 sliding of buckle, avoids the abrasion on 81 surfaces of buckle, ensure that buckle 81 can be stuck in
In sliding slot 82, to prevent 3, No. two sealing rings 7 of fluid scouring No.1 sealing ring and dish plate 5, and then butterfly valve is protected, extend butterfly
The service life of valve；83 inner surface of cutting ferrule is equipped with hairbrush, is more easier buckle 81 when being inserted in cutting ferrule 83, and 83 inner surface of cutting ferrule
It is made of rubber, 81 ends of buckle are greater than 81 arrival ends of buckle, and 83 inner surface of cutting ferrule is compressible, ensure that buckle 81 can be inserted in card
In set 83；When butterfly valve is closed, No.1 sealing ring 3 is equipped with annular through groove 31, when fluid compression No.1 sealing ring 3, No.1 sealing
Ring 3 is tilted to No. two 7 sides of sealing ring, is compressed, and is increased the extruding force between No.1 sealing ring 3 and No. two sealing rings 7, is improved
Leakproofness between No.1 sealing ring 3 and No. two sealing rings 7, and then improve the sealing effect of gate valve.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (7)
1. a kind of protection against erosion butterfly valve, it is characterised in that: including pressing plate (1), valve shaft (2), No.1 sealing ring (3), valve body (4) and dish
Plate (5)；The dish plate (5) is located in valve body (4), and valve shaft (2) upper end is equipped with manipulation device, and manipulation device is for controlling dish plate
(5) folding；It is equipped with a No.1 annular groove (21) among the valve shaft (2), is opened on the valve plate of No.1 annular groove (21) side
If several apertures, aperture are in communication with the outside；The pressing plate (1) is several, and pressing plate (1) is uniformly distributed in dish plate (5) side,
Pressing plate (1) one end and dish plate (5) one end end are hinged, and pressing plate (1) other end is fixed with fixing axle；The rigidity rope (6) one
End is fixedly connected with fixing axle, and rigidity is restricted on the fixed No.1 annular groove (21) being wrapped in valve shaft (2) of (6) other end；Dish plate
(5) side wall is equipped with No. two annular grooves, is fixedly connected with two No.1 sealing rings (3) on No. two annular groove two sidewalls, and No.1 is close
There are gaps between seal ring (3).
2. a kind of protection against erosion butterfly valve according to claim 1, it is characterised in that: the pressing plate (1) is by No.1 plate (11), two
Number plate (12) and No.1 spring composition；It is hollow setting in the No.1 plate (11), No.1 plate is protruded into No. two plate (12) one end
(11) in, and No. two plate (12) ends are fixedly connected by No.1 spring with No.1 plate (11).
3. a kind of protection against erosion butterfly valve according to claim 1, it is characterised in that: be equipped among the No.1 sealing ring (3)
No. two sealing rings (7)；No. two sealing rings (7) are by No. two springs and No. two annular grooves close to dish plate (5) center of circle side
Side wall is fixedly connected.
4. a kind of protection against erosion butterfly valve according to claim 2, it is characterised in that: dish plate (5) side is equipped with L-type plate
(8), buckle (81) is fixedly mounted in L-type plate (8) end；No. two plates (12) are equipped with sliding slot (82).
5. a kind of protection against erosion butterfly valve according to claim 4, it is characterised in that: the buckle (81) snaps into sliding slot (82)
When, buckling (81) end and sliding slot (82), there are cavity (84) far from having between buckle (81) side side wall.
6. a kind of protection against erosion butterfly valve according to claim 4, it is characterised in that: be slidably installed cutting ferrule in the sliding slot (82)
(83)；The cutting ferrule (83) is fixedly connected by No. three springs with No. two plates (12)；Cutting ferrule (83) and sliding slot (82) contact side
Surface is smooth, and cutting ferrule (83) inner surface is made of rubber, and cutting ferrule (83) inner surface is equipped with hairbrush.
7. a kind of protection against erosion butterfly valve according to claim 1, it is characterised in that: the No.1 sealing ring (3) is close to each other
Side is equipped with annular through groove (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169433.2A CN109737209A (en) | 2019-03-06 | 2019-03-06 | A kind of protection against erosion butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169433.2A CN109737209A (en) | 2019-03-06 | 2019-03-06 | A kind of protection against erosion butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| CN109737209A true CN109737209A (en) | 2019-05-10 |
Family
ID=66369580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910169433.2A Pending CN109737209A (en) | 2019-03-06 | 2019-03-06 | A kind of protection against erosion butterfly valve |
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| CN (1) | CN109737209A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410509A (en) * | 2019-07-22 | 2019-11-05 | 凯斯特阀门集团有限公司 | A kind of butterfly valve plate seal protecting device |
| CN113217636A (en) * | 2021-04-01 | 2021-08-06 | 陈玉霞 | Stop valve |
| CN114992343A (en) * | 2022-08-03 | 2022-09-02 | 廊坊市源晨环保科技有限公司 | High barrier propterty butterfly valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0160079U (en) * | 1987-10-12 | 1989-04-17 | ||
| JPH09264430A (en) * | 1996-03-28 | 1997-10-07 | Kurimoto Ltd | Butterfly valve making with both cavitation-free and low noise compatible capablities |
| CN1498319A (en) * | 2001-02-26 | 2004-05-19 | ������������ʽ���� | Butterfly valve |
| CN202790575U (en) * | 2012-07-10 | 2013-03-13 | 博纳斯威阀门有限公司 | Anti-scour butterfly valve |
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2019
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| JPH0160079U (en) * | 1987-10-12 | 1989-04-17 | ||
| JPH09264430A (en) * | 1996-03-28 | 1997-10-07 | Kurimoto Ltd | Butterfly valve making with both cavitation-free and low noise compatible capablities |
| CN1498319A (en) * | 2001-02-26 | 2004-05-19 | ������������ʽ���� | Butterfly valve |
| CN202790575U (en) * | 2012-07-10 | 2013-03-13 | 博纳斯威阀门有限公司 | Anti-scour butterfly valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410509A (en) * | 2019-07-22 | 2019-11-05 | 凯斯特阀门集团有限公司 | A kind of butterfly valve plate seal protecting device |
| CN113217636A (en) * | 2021-04-01 | 2021-08-06 | 陈玉霞 | Stop valve |
| CN114992343A (en) * | 2022-08-03 | 2022-09-02 | 廊坊市源晨环保科技有限公司 | High barrier propterty butterfly valve |
| CN114992343B (en) * | 2022-08-03 | 2022-12-20 | 宁波一机阀门制造有限公司 | High barrier propterty butterfly valve |
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