CN207701788U - A kind of flexibility bidirectional sealed butterfly valve - Google Patents
A kind of flexibility bidirectional sealed butterfly valve Download PDFInfo
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- CN207701788U CN207701788U CN201820031155.5U CN201820031155U CN207701788U CN 207701788 U CN207701788 U CN 207701788U CN 201820031155 U CN201820031155 U CN 201820031155U CN 207701788 U CN207701788 U CN 207701788U
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- valve
- valve body
- sealed butterfly
- ring
- bidirectional sealed
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Abstract
The utility model is related to a kind of flexible bidirectional sealed butterfly valves, including valve body, the seal assembly being arranged on the valve body and the transmission component being arranged in the valve body；The seal assembly includes valve plate, is located at the valve seat of the valve plate front end, the sealing element being arranged on the valve seat；The sealing element is connected with the valve seat elasticity；Transmission component, the transmission component are arranged in the valve body comprising valve rod, the packing element being arranged between the valve body and valve rod and the pre-loading screw being arranged in three open loops；The technical issues of the utility model solves vulnerable part in valve and is not easy to replace, poor universality and unsuitable high temperature applicationss, and then realize with the features such as good airproof performance, service life is long, dependable performance, high temperature resistant effect.
Description
Technical field
The utility model is related to valve technology field more particularly to a kind of flexible bidirectional sealed butterfly valves.
Background technology
Butterfly valve is called flap valve, is a kind of regulating valve, with the development of science and technology the development of butterfly valve is very fast, in all trades and professions
In, especially on heavy-caliber pipeline, the trend of substituted gate valve, application is more and more extensive, between the sealing surface and valve seat of butterfly plate
Sealing be so that butterfly plate is rotated by the torque of transmission device, when butterfly valve forward direction pressure-bearing, pressure is higher, and forward direction sealing is tighter；Work as valve
Door is closed, and certain media reflux is had, and back pressure is formed in the exit of valve body, when butterfly plate bears back pressure, when medium and butterfly plate it
Between pressure when being more than pressure between valve body and butterfly plate, just will produce reflux.
The patent document of Patent No. CN103527796A discloses a kind of bidirectional bearing hard seal butterfly valve, including：Valve body,
Valve body includes inlet and outlet；Valve seat compatible with valve body is set on valve body；Butterfly plate compatible with valve seat, the side of butterfly plate
Edge is arc-shaped along the axis direction of butterfly plate；The top of the valve rod being connect with butterfly plate, valve rod is connect with transmission device；Setting is going out
The back-pressure sealing mechanism coordinated with the curved edge of butterfly plate at mouthful；It can be seen from the above technical proposal that pair that the invention provides
To bearing hard seal butterfly valve, butterfly plate is arranged to spherical butterfly plate, and the edge of butterfly plate is arc-shaped design along the axis direction of butterfly plate, the back of the body
Pressure sealing device forms face sealing with the contact at butterfly plate edge by original dot encapsulation, enhances back-pressure sealing device and butterfly plate
Between leakproofness, when back pressure that valve body is born increases, contact sealing surface will increase, to effectively prevent returning for medium
Stream, plays effective sealing function, enhances the leakproofness of butterfly valve in the case of butterfly valve reverse pressure-bearing.
But in actual use, vulnerable part is not easy to replace in above structure valve, poor universality and sealing leak amount
The problems such as big.
Utility model content
The purpose of this utility model is in view of the deficiencies of the prior art, by valve plate using double eccentric structures, then profit
It is all made of elastic material and matching setting with valve seat and O-ring a, while O-ring a and O-ring b is mounted on by valve seat by trim ring
On, it is not easy to replace to solve vulnerable part in valve, poor universality and poorly sealed close technical problem, and then realize and have
The features such as good airproof performance, service life is long, dependable performance effect.
It is as follows using technical solution for the above technical problem：A kind of flexibility bidirectional sealed butterfly valve, including valve body, setting
Seal assembly on the valve body and the transmission component being arranged in the valve body；
The seal assembly includes the valve plate being arranged on valve body, is located at the valve seat of the valve plate front end, is arranged described
Sealing element on valve seat；The sealing element is connected with the valve seat flexibility；
Transmission component, the transmission component are arranged in the valve body comprising valve rod is arranged in the valve body and valve rod
Between packing element and the pre-loading screw that is arranged in three open loops.
As a preferred embodiment, the sealing element includes：
O-ring a, the O-ring a is eccentrically set on the valve seat and its sealing surface shape is beveled cone；And
Pedestal, the pedestal are arranged on the valve seat.
As a preferred embodiment, being equipped with floating space above the pedestal, the floating space is located under the valve body.
As a preferred embodiment, being provided with trim ring on the valve seat, the trim ring is used to O-ring a being fixed on valve seat.
As a preferred embodiment, being additionally provided with O-ring b on the trim ring.
As a preferred embodiment, the packing element includes：
Axle sleeve, the axis are set below the valve rod；
Filler pressing sleeve, the filler pressing sleeve are arranged in the axle sleeve front end；And
Filler, the filler are arranged in the filler pressing sleeve.
As a preferred embodiment, the valve plate is using double eccentric structures.
As a preferred embodiment, the valve rod uses integral type processing method.
As a preferred embodiment, the sealing element is process with the valve plate integral type.
Preferably as another, finite place piece is arranged in the valve rod rear and it runs through company with the valve body by positioning pin
It connects.
The beneficial effects of the utility model：
(1) by the way that valve plate is arranged using double eccentric structures in the utility model, O-ring a is fixed on by trim ring on valve seat,
It is integrally machined into a unique eccentric body with valve plate so that valve plate is bonded rapidly or is taken off by eccentric center principle in the process of running
From sealing surface of seat, and then the friction between sealing pair is reduced, improves service life；This outer seat is positioned using trim ring, adjustment
Pre-loading screw pre-tightens, and versatility is good.
(2) in the utility model by be arranged sealing surface of seat by frock clamp be processed into it is identical with O-ring a tiltedly
Cone is positioned using trim ring, and adjustment pre-loading screw pre-tightens, and seal line can be catered to automatically in valve closing process；Valve seat and valve body
Between sealing using compression molding enhancing soft graphite；Coordinate again above pedestal there are floating space, when forward direction is installed,
Pretension bolt ensures pretightning force, and reversely when installation, medium active force can push valve seat anterior displacement, realizes reliable reversed close
Envelope；
(3) it is floating type by the way that valve seat is arranged in the utility model, can be automatically positioned, while being positioned using pin, with side
Just the reliability of processing and the guarantee assembly of valve seat, and then solve the problems, such as that valve seat is without positioning datum when assembly after processing；
(4) integral type is used by the way that valve rod is arranged in the utility model, ensures that compressive resistance and concentricity, intensity meet pre-
Pressure medium when clamp force and valve are closed, the phenomenon that preventing due to pressure medium and deform, position-limiting unit is arranged in valve rod tail portion,
It prevents valve plate off-centring and anti-valve rod from flying out, ensures safety when butterfly valve uses；
In conclusion the equipment has the advantages of realization bi-direction zero-leakage, increase valve service life, it is particularly suitable for close
Seal strict valve technology field.
Description of the drawings
It is required in being described below to embodiment for the clearer technical solution for illustrating the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, drawings discussed below is only some embodiments of the utility model,
For for those of ordinary skill in the art, without creative efforts, it can also obtain according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is the schematic cross-sectional view of elastic bidirectional sealed butterfly valve.
Fig. 2 is the enlarged diagram at elastic bidirectional sealed butterfly valve B.
Fig. 3 is the enlarged diagram at elastic bidirectional sealed butterfly valve A.
Fig. 4 is the structural schematic diagram of elastic bidirectional sealed butterfly valve valve plate junction.
Specific implementation mode
The technical scheme in the embodiment of the utility model is clearly and completely illustrated below in conjunction with the accompanying drawings.
Embodiment one
As shown in Figure 1, a kind of flexibility bidirectional sealed butterfly valve, including valve body 1, the seal assembly 2 that is arranged on the valve body 1
And the transmission component 3 being arranged in the valve body 1；
The seal assembly 2 includes the valve plate 21 being arranged on the valve body 1, the valve seat for being located at 21 front end of the valve plate
23, sealing element 22 on the valve seat 23 is set；The sealing element 22 is connected with 23 flexibility of the valve seat；
Transmission component 3, the transmission component 3 are arranged in the valve body 1 comprising valve rod 31 is arranged in the valve body 1
Packing element 34 between valve rod 31 and the pre-loading screw 36 being arranged in three open loops 35.
It is noted that sealing surface of seat is processed into beveled cone identical with O-ring a 221 by frock clamp,
It is positioned using trim ring 242, adjustment pre-loading screw 36 pre-tightens, and seal line can be catered to automatically in valve closing process；Valve seat 23 and valve
Sealing between body 1 uses the enhancing soft graphite of compression molding；When forward direction is installed, pretension bolt ensures pretightning force, reversed to pacify
When dress, medium active force can push valve seat anterior displacement, realize reliable reversed sealing.
In addition, the O-ring a221 and valve seat 23 are flexible material, wherein whole PTFE, R- may be used in valve seat 23
Any type material is processed in PTFE, PPL, improves wearability and corrosion resistance, increases valve service life, is reduced
Cost achievees the effect that zero leakage.
Further, as shown in Fig. 2, the sealing element 22 includes：
O-ring a221, the O-ring a221 is eccentrically set on the valve seat 23 and its sealing surface shape is beveled cone；
And
Pedestal 222, the pedestal 222 are arranged on the valve seat 23.
Further, as shown in figure 3, being provided with trim ring 242 on the valve seat 23, the trim ring 242 is used for O-ring a221
It is fixed on valve seat 23.
Further, as shown in figure 3, being additionally provided with O-ring b223 on trim ring 242, two above and below the O-ring b223 settings
It is a.
In the present embodiment, by the way that valve plate 21 is arranged using double eccentric structures, O-ring a 221 is fixed on by trim ring 242
On valve plate 21, it is integrally machined into a unique eccentric body with valve plate 21, valve plate 21 is made to pass through eccentric center principle in the process of running
Rapid fitting is detached from sealing surface of seat, reduces the friction between sealing pair, improves service life.O-ring a 221 uses metal
Ring, the special tooling of sealing surface are processed as a beveled cone.
This outer seat 23 is positioned using trim ring 242, and adjustment pre-loading screw 36 pre-tightens, and versatility is good.
Further, as shown in Figure 1, finite place piece 32 is arranged for 31 rear of the valve rod and it passes through positioning with the valve body 1
Pin 33 is through connection.
It is in the present embodiment floating type by the way that valve seat 23 is arranged, can be automatically positioned, while being positioned using pin, with convenient
The processing of valve seat 23 and the reliability for ensureing assembly, and then solve the problems, such as that valve seat is without positioning datum when assembly after processing.
Further, as shown in Figure 1, the packing element 34 includes：
Axle sleeve 341, the axle sleeve 341 are arranged below the valve rod 31；
Filler pressing sleeve 342, the filler pressing sleeve 342 are arranged in 341 front end of the axle sleeve；And
Filler 343, the filler 343 are arranged in the filler pressing sleeve 342.
Further, as shown in Figure 1, the valve plate 21 is using double eccentric structures.
Further, the valve rod 31 uses integral type processing method.
Valve rod 31 uses integral type in the present embodiment, ensures that compressive resistance and concentricity, intensity meet pretightning force and valve
Pressure medium when door is closed, the phenomenon that preventing due to pressure medium and deform.
Further, the sealing element a22 is process with 21 integral type of the valve plate.
As a preferred embodiment, as shown in Figure 2 and Figure 3,222 top of the pedestal is equipped with floating space 10, the floating space
10 are located under the valve body 1.
In the present embodiment, when fluid is flowed into from 31 direction of valve rod, valve plate 21 is moved downward and is sealed by Fluid pressure
Part 22 realizes sealing；When fluid is fashionable from reverse flow, valve plate 21 is moved upwards by Fluid pressure, by the pedestal 222
Side be equipped with floating space 10, sealing element 22 by fluid unidirectional force when, synchronize and effect up, so realize with valve plate 21
Seal operation, reach the final two way seal for realizing butterfly valve.
In short, the elastic bidirectional sealed butterfly valve specification produced is DN100-DN1000, nominal pressure PN2.0-
PN11.0, sealing grade are bi-direction zero-leakage, and the continuous action of service life is not less than 150,000 times, and temperature in use is -40~+300
Between DEG C.
Embodiment two
Wherein identical with embodiment one or corresponding component uses reference numeral corresponding with embodiment one, is risen to be easy
See, hereafter only describes the distinctive points with embodiment one.The embodiment two and embodiment one the difference is that：
Further, as shown in Figure 1, finite place piece 32 is arranged for 31 rear of the valve rod and it passes through positioning with the valve body 1
Pin 33 is through connection.
In the present embodiment, position-limiting unit 311 is arranged in valve rod tail portion, prevents valve plate off-centring and anti-valve rod from flying out, and protects
Demonstrate,prove safety when butterfly valve uses.
In the description of the present invention, it should be understood that the orientation or position of the instructions such as term " front and back ", " left and right "
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without
It is instruction or implies that signified equipment or component must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as the limitation to utility model.
Certainly in the technical scheme, those skilled in the art is it should be understood that term " one " is interpreted as " at least
One " or " one or more ", i.e., in one embodiment, the quantity of an element can be one, and in other implementation
In example, the quantity of the element can be multiple, and term " one " should not be understood as the limitation to quantity.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, the variation that any one skilled in the art can readily occur under the technical clarification of the utility model
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with right
Subject to the protection domain of claim.
Claims (10)
1. a kind of flexibility bidirectional sealed butterfly valve, including valve body (1), seal assembly (2) on the valve body (1) is set and is set
Set the transmission component (3) in the valve body (1)；
It is characterized in that, the seal assembly (2) includes the valve plate (21) being arranged on the valve body (1), is located at the valve plate
(21) valve seat (23) of front end, the sealing element (22) being arranged on the valve seat (23)；The sealing element (22) and the valve seat
(23) elasticity is connected；
Transmission component (3), transmission component (3) setting is in the valve body (1) comprising valve rod (31) is arranged described
The pre-loading screw (36) of packing element (34) and setting in three open loops (35) between valve body (1) and valve rod (31).
2. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that the sealing element (22) includes：
O-ring a (221), the O-ring a (221) is eccentrically set on the valve seat (23) and its sealing surface shape is oblique cone
Body；And
Pedestal (222), the pedestal (222) are arranged on the valve seat (23).
3. a kind of flexible bidirectional sealed butterfly valve according to claim 2, which is characterized in that set above the pedestal (222)
There are floating space (10), the floating space (10) to be located under the valve body (1).
4. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that be provided on the valve seat (23)
Trim ring (242), the trim ring (242) are used to O-ring a (221) being fixed on valve seat (23).
5. a kind of flexible bidirectional sealed butterfly valve according to claim 4, which is characterized in that also set on the trim ring (242)
It is equipped with O-ring b (223), O-ring b (223) setting two up and down.
6. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that the packing element (34) includes：
Axle sleeve (341), axle sleeve (341) setting is below the valve rod (31)；
Filler pressing sleeve (342), the filler pressing sleeve (342) are arranged in the axle sleeve (341) front end；And
Filler (343), filler (343) setting is in the filler pressing sleeve (342).
7. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that the valve plate (21) is inclined using three
Core structure.
8. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that the valve rod (31) is using one
Formula processing method.
9. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that the sealing element (22) with it is described
Valve plate (21) integral type is process.
10. a kind of flexible bidirectional sealed butterfly valve according to claim 1, which is characterized in that valve rod (31) rear is set
It is equipped with locating part (32) and it runs through connection with the valve body (1) by positioning pin (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820031155.5U CN207701788U (en) | 2018-01-09 | 2018-01-09 | A kind of flexibility bidirectional sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820031155.5U CN207701788U (en) | 2018-01-09 | 2018-01-09 | A kind of flexibility bidirectional sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701788U true CN207701788U (en) | 2018-08-07 |
Family
ID=63034827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820031155.5U Active CN207701788U (en) | 2018-01-09 | 2018-01-09 | A kind of flexibility bidirectional sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701788U (en) |
-
2018
- 2018-01-09 CN CN201820031155.5U patent/CN207701788U/en active Active
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