CN207975268U - Using the bidirectional sealed butterfly valve of rubber valve seat structure - Google Patents
Using the bidirectional sealed butterfly valve of rubber valve seat structure Download PDFInfo
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- CN207975268U CN207975268U CN201820246413.1U CN201820246413U CN207975268U CN 207975268 U CN207975268 U CN 207975268U CN 201820246413 U CN201820246413 U CN 201820246413U CN 207975268 U CN207975268 U CN 207975268U
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Abstract
The utility model is related to a kind of bidirectional sealed butterfly valves using rubber valve seat structure, including valve body, valve seat, butterfly plate, valve rod and driving mechanism, valve seat is fixed on by means of the inserts of annular on valve body, inserts limitation valve seat is displaced outwardly, valve seat uses rubber material, with elasticity, valve seat upper end is the valve seat lip of arc, valve seat lip can be around fulcrum rotation bending, it is contacted with butterfly plate surface, valve seat is set to generate seal pressure, valve seat lip is firmly attached to butterfly plate surface, valve seat realizes two-way initial preload function by natural resiliency deformation, butterfly valve is set to keep lasting sealing force.Valve seat is lipped in the utility model, and lip can be around fulcrum rotation bending, and valve seat has elasticity, has the function that Two-way tightening seal is realized by natural resiliency deformation；Inserts has the limit boundary that limitation valve seat is displaced outwardly, and inserts has the flange that guarantee valve seat generates Bidirectional static seal, and the flange on inserts, which has, ensures that valve leaks in neither occurring, the function of also not leaking outside.
Description
Technical field
The utility model is related to a kind of butterfly valves, more particularly, to a kind of bidirectional sealed butterfly valve using rubber valve seat structure.
Background technology
Butterfly valve is to open, close or adjust medium with 90 ° or so of disc type opening and closing element (namely butterfly plate) reciprocating rotating
A kind of valve of flow.Butterfly valve is not only simple in structure, is small, is light-weight, material consumption saves, installation dimension is small, driving moment
It is small, easy to operate, rapid, and can also have good flow regulating function simultaneously and close sealing characteristics.
Chinese patent CN206246702U discloses a kind of two-way butterfly valve, including valve body, and the bottom of the valve body is equipped with
Bottom cover is equipped with valve seat at the top of the valve body, and is equipped with sealing ring between valve body and valve seat, and the valve seat passes through studs
It is connect with driving device, the both ends of the studs are threaded with nut, and valve rod, the valve rod are equipped in the valve body
One end pass through and valve seat and connect with driving device by key, and the junction of valve rod and valve seat and driving device is equipped with branch
The other end of frame, the valve rod is against on bottom cover, butterfly plate is equipped on the valve rod, and connect by pin between valve rod and butterfly plate
It connects, the side of the butterfly plate is equipped with pressing plate.By the valve seat and bottom cover being equipped at valve body both ends, two way seal can be reached
Effect, flow resistance is small, can bidirectional bearing, be convenient for filler transmitted in both directions, and by sealing ring, valve seat and O circles constitute sealing knot
Structure, changes the sealing structure of traditional valve body, and triple seal increases sealing performance.But above structure is still traditional
Butterfly valve structure, sealing caused by pressing for butterfly plate for fluid media (medium) is insufficient, and problem is not solved very well.
Chinese patent CN107559435A discloses a kind of Bidirectional pressure high temperature butterfly valve, including valve body, valve seat, butterfly plate, valve rod,
Valve body, butterfly plate, valve seat use floating valve seat；Mainly floating valve seat is made of fixed ring and floating ring, and fixed ring is consolidated by pressure ring
Level pressure coordinates between valve body for static seal on the radial direction step of valve outlet channel, and floating ring is movably arranged on by pressure ring
On valve outlet channel radial direction step on the inside of fixed ring, radial step in floating ring radial direction step and valve outlet channel it
Between have axial gap, be located in the sagittal plane of pressure ring side in fixed ring and floating ring joint and be formed with annular arc groove,
Matched metal sealing diaphragm, the exterior arc surface sealing welding of the metal sealing diaphragm are welded in the annular arc groove
It is connected in the annular arc groove of fixed ring side, inner arc surface sealing welding is in the annular arc groove of floating ring side.
Have many advantages, such as that Applicable temperature height, two way seal performance are good.But it is above-mentioned using fixed ring, floating ring and setting metal sealing
The structure of diaphragm is complex.
Utility model content
The purpose of this utility model is exactly to be provided a kind of using rubber to overcome the problems of the above-mentioned prior art
The bidirectional sealed butterfly valve of valve seat construction.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of bidirectional sealed butterfly valve using rubber valve seat structure, including valve body, valve seat, butterfly plate, valve rod and driving mechanism,
Import and outlet are opened up on the valve body, the valve seat is arranged on valve body, and the butterfly plate is located in valve body, and with setting in valve
Internal valve rod connection, described valve rod one end are located in valve body, the other end stretch out valve body outside and with the drive that is arranged outside valve body
Motivation structure connects, butterfly plate rotation of the driving mechanism for being connect with ovable valve stem and with valve rod, and then realizes keying or the tune of butterfly valve
Section,
The valve seat is mounted in the slot in valve body, is fixed on valve body by means of the inserts of annular, the inserts limitation
Valve seat is displaced outwardly, and the valve seat uses rubber material, has elasticity, the valve seat upper end is the valve seat lip of arc, described
Valve seat lip can contact with butterfly plate surface around fulcrum rotation bending, valve seat made to generate seal pressure, valve seat lip is firmly attached to
Butterfly plate surface, valve seat realize two-way initial preload function by natural resiliency deformation, butterfly valve are made to keep lasting sealing force.With pipe
The increase of road fluid medium pressure, butterfly plate and valve seat contact stress are bigger, and sealing effect is better.
The groove body that limitation valve seat is displaced outwardly is formed between the inserts and valve body.
There is the limit boundary that limitation valve seat is displaced outwardly, the limit boundary to have perpendicular, limit for the inserts upper end
Bit boundary limits the movement of valve seat, increases the contact force between valve seat and butterfly plate.
There is the inserts flange for ensureing that valve seat generates Bidirectional static seal, valve seat to be close to flange.Flange tool on inserts
Guaranteed butterfly valve leaks in neither occurring, the function of also not leaking outside.After flange and valve seat combination on inserts, valve seat can be prevented
It is blown out by high-pressure fluid medium in valve opening, avoids the failure of valve seal.
The butterfly plate is inclined-plane with valve seat contact site.
Sealing ring is equipped between the valve rod and valve body.
The utility model uses a kind of elastic seat structure, and the two way seal of butterfly valve can be better achieved.
In the butterfly valve of the utility model, the pressure of fluids within pipes medium acts on the butterfly of valve on the valve of closing
On plate and valve seat.Butterfly plate under the action of pipeline fluid pressure medium will along fluid flow direction it is micro move, no matter
Pipeline fluid pressure medium flows to butterfly plate from valve rod end, or flows to butterfly plate from inserts end, and butterfly plate will generate micro movement, and
And micro movement value is the same in both direction.And the partial movement being applied in valve seat lip by fluid medium pressure is
It is different.The elasticity of valve seat lip and the position control of fulcrum make valve seat lip generate bending, and the movement of fulcrum makes valve
The portion cross-sectional shape of seat lip changes and is in close contact with butterfly plate, since butterfly plate surface is the part on inclined-plane, no matter
How is the flow direction of pipeline fluid pressure medium, and the seal pressure between butterfly plate and valve seat can be made to increase, ensure valve
Two way seal performance.
The utility model butterfly valve realizes that the principle of Bidirectional auto-sealing is：
When a valves are closed, butterfly plate makes elastic seat generate normal deformation, and elastic seat is made to generate certain pre- tightening seal
Power, valve seat lip are firmly attached to butterfly plate surface, and valve is made to keep lasting sealing.
B at inserts by fluid medium pressure when, the valve seat lip of valve seat is generated bending by the effect of pressure medium,
It is more adjacent on butterfly plate surface, valve is made preferably to seal.
C at butterfly plate valve rod by fluid medium pressure when, push butterfly plate to valve seat, the limit boundary effect of inserts makes valve
The outside movement of seat is restricted, and keeps valve seal more reliable.
Compared with prior art, the utility model has the following advantages and advantageous effect：
1, valve seat is lipped, and lip can be around fulcrum rotation bending, and valve seat has elasticity, has and becomes by natural resiliency
Shape realizes the function of Two-way tightening seal；
2, inserts has the limit boundary that limitation valve seat is displaced outwardly, and inserts has guarantee valve seat generation two-way quiet close
The flange of envelope, the flange on inserts, which has, ensures that valve leaks in neither occurring, the function of also not leaking outside；
3, the combination of the flange and elastic seat on inserts, can prevent elastic seat to be situated between by high-pressure fluid in valve opening
Matter is blown out.
4, the utility model valve seat is designed using lip formula, and elasticity is good, and sealing reliability is high, can reach two way seal.
5, the utility model butterfly valve structure is simple, of low cost, is readily disassembled maintenance.
Description of the drawings
Fig. 1 is the bidirectional sealed butterfly valve structural schematic diagram that rubber valve seat structure is used in embodiment 1；
Fig. 2 is enlarged structure schematic diagram at A in Fig. 1；
Fig. 3 is the schematic diagram of valve seat Bidirectional auto-sealing.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment
As shown in Figure 1, 2, a kind of bidirectional sealed butterfly valve using rubber valve seat structure, including valve body 1, valve seat 3, butterfly plate 4,
Valve rod 5 and driving mechanism 6 open up import and outlet on valve body 1, and valve seat 3 is arranged on valve body 1, and butterfly plate 4 is located in valve body 1, and
It is connect with the valve rod 5 being arranged in valve body 1,5 one end of valve rod is located in valve body 1, and the other end stretches out outside valve body 1 and exists with setting
Driving mechanism 6 outside valve body 1 connects, and driving mechanism 6 is used to rotate with ovable valve stem 5 and the butterfly plate connecting with valve rod 54, in turn
Realize the keying or adjusting of butterfly valve,
Valve seat 3 is mounted in the slot in valve body 1, is fixed on valve body 1 by means of the inserts 2 of annular, and inserts 2 limits valve
Seat 3 is displaced outwardly, and valve seat 3 uses rubber material, and it is the valve seat lip 31 of arc, valve seat lip 31 to have elasticity, 3 upper end of valve seat
It can be contacted with 4 surface of butterfly plate around fulcrum rotation bending, valve seat 3 made to generate seal pressure, valve seat lip 31 is firmly attached to butterfly plate
4 surfaces, valve seat 3 realize two-way initial preload function by natural resiliency deformation, butterfly valve are made to keep lasting sealing force.With pipeline
The increase of fluid medium pressure, butterfly plate 4 and 3 contact stress of valve seat are bigger, and sealing effect is better.
The groove body that limitation valve seat 3 is displaced outwardly is formed between inserts 2 and valve body 1.
There is 2 upper end of inserts the limit boundary 21 that limitation valve seat 3 is displaced outwardly, the limit boundary 21 to have perpendicular,
The movement that boundary 21 limits valve seat 3 is limited, the contact force between valve seat 3 and butterfly plate 4 is increased.
There is inserts 2 flange 22 for ensureing that valve seat 3 generates Bidirectional static seal, valve seat 3 to be close to flange 22.It is convex on inserts 2
Edge 22, which has, ensures that butterfly valve leaks in neither occurring, the function of also not leaking outside.After flange 22 and valve seat 3 on inserts 2 combine,
It can prevent valve seat 3 from being blown out by high-pressure fluid medium in valve opening, avoid the failure of valve seal.Butterfly plate 4 is contacted with valve seat 3
Position is inclined-plane.
Sealing ring is equipped between valve rod 5 and valve body 1.
In the butterfly valve of the present embodiment, the pressure of fluids within pipes medium acts on the butterfly plate of valve on the valve of closing
On valve seat.Butterfly plate under the action of pipeline fluid pressure medium will along fluid flow direction it is micro move, no matter pipe
Road fluid medium pressure flows to butterfly plate from valve rod end, or flows to butterfly plate from inserts end, and butterfly plate will generate micro movement, and
Micro movement value is the same in both direction.And the partial movement being applied in valve seat lip by fluid medium pressure is not
The same.The elasticity of valve seat lip and the position control of fulcrum make valve seat lip generate bending, and the movement of fulcrum makes valve seat
The portion cross-sectional shape of lip changes and is in close contact with butterfly plate, since butterfly plate surface is the part on inclined-plane, no matter pipe
How is the flow direction of road fluid medium pressure, and the seal pressure between butterfly plate and valve seat can be made to increase, and ensures the double of valve
To sealing performance.
As shown in figure 3, the present embodiment butterfly valve realizes that the principle of Bidirectional auto-sealing is：
When a valves are closed, butterfly plate makes elastic seat generate normal deformation, and elastic seat is made to generate certain pre- tightening seal
Power, valve seat lip are firmly attached to butterfly plate surface, and valve is made to keep lasting sealing.
B at inserts by fluid medium pressure when, the valve seat lip of valve seat is generated bending by the effect of pressure medium,
It is more adjacent on butterfly plate surface, valve is made preferably to seal.
C at butterfly plate valve rod by fluid medium pressure when, push butterfly plate to valve seat, the limit boundary effect of inserts makes valve
The outside movement of seat is restricted, and keeps valve seal more reliable.
Practicality can be understood and used the above description of the embodiments is intended to facilitate those skilled in the art
It is novel.Person skilled in the art obviously easily can make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without having to go through creative labor.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art's announcement according to the present utility model, do not depart from improvement that the utility model scope is made and
Modification should be all within the protection scope of the utility model.
Claims (6)
1. a kind of bidirectional sealed butterfly valve using rubber valve seat structure, including valve body (1), valve seat (3), butterfly plate (4), valve rod (5)
And driving mechanism (6), import and outlet are opened up on the valve body (1), the valve seat (3) is arranged on valve body (1), the butterfly plate
(4) it is located in valve body (1), and is connect with the valve rod (5) being arranged in valve body (1), described valve rod (5) one end is located at valve body (1)
Interior, the other end stretches out valve body (1) outside and is connect in the external driving mechanism (6) of valve body (1) with setting, and driving mechanism (6) is used for
It is rotated with ovable valve stem (5) and the butterfly plate (4) being connect with valve rod (5), and then realizes the keying or adjusting of butterfly valve,
It is characterized in that, the valve seat (3) is mounted in the slot in valve body (1), valve body is fixed on by means of the inserts (2) of annular
(1) on, inserts (2) the limitation valve seat (3) is displaced outwardly, and the valve seat (3) uses rubber material, has elasticity, the valve
Seat (3) upper end is the valve seat lip (31) of arc, and the valve seat lip (31) can be around fulcrum rotation bending, same to butterfly plate (4) surface
Contact makes valve seat (3) generate seal pressure, and valve seat lip (31) is tightly attached to butterfly plate (4) surface, and valve seat (3) becomes by natural resiliency
Shape realizes two-way initial preload function, and butterfly valve is made to keep lasting sealing force.
2. a kind of bidirectional sealed butterfly valve using rubber valve seat structure according to claim 1, which is characterized in that described embedding
The groove body that limitation valve seat (3) is displaced outwardly is formed between part (2) and valve body (1).
3. a kind of bidirectional sealed butterfly valve using rubber valve seat structure according to claim 2, which is characterized in that described embedding
There is the limit boundary (21) that limitation valve seat (3) is displaced outwardly, the limit boundary (21) to have perpendicular, limit for part (2) upper end
Bit boundary (21) limits the movement of valve seat (3), increases the contact force between valve seat (3) and butterfly plate (4).
4. a kind of bidirectional sealed butterfly valve using rubber valve seat structure according to claim 1, which is characterized in that described embedding
There is part (2) flange (22) for ensureing that valve seat (3) generates Bidirectional static seal, valve seat (3) to be close to flange (22).
5. a kind of bidirectional sealed butterfly valve using rubber valve seat structure according to claim 1, which is characterized in that the butterfly
Plate (4) is inclined-plane with valve seat (3) contact site.
6. a kind of bidirectional sealed butterfly valve using rubber valve seat structure according to claim 1, which is characterized in that the valve
Sealing ring is equipped between bar (5) and valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820246413.1U CN207975268U (en) | 2018-02-11 | 2018-02-11 | Using the bidirectional sealed butterfly valve of rubber valve seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820246413.1U CN207975268U (en) | 2018-02-11 | 2018-02-11 | Using the bidirectional sealed butterfly valve of rubber valve seat structure |
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| Publication Number | Publication Date |
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| CN207975268U true CN207975268U (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820246413.1U Active CN207975268U (en) | 2018-02-11 | 2018-02-11 | Using the bidirectional sealed butterfly valve of rubber valve seat structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167455A (en) * | 2018-02-11 | 2018-06-15 | 上海阀门五厂有限公司 | A kind of bidirectional sealed butterfly valve using rubber valve seat structure |
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2018
- 2018-02-11 CN CN201820246413.1U patent/CN207975268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167455A (en) * | 2018-02-11 | 2018-06-15 | 上海阀门五厂有限公司 | A kind of bidirectional sealed butterfly valve using rubber valve seat structure |
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