CN207975265U - A kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction - Google Patents
A kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction Download PDFInfo
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- CN207975265U CN207975265U CN201820246509.8U CN201820246509U CN207975265U CN 207975265 U CN207975265 U CN 207975265U CN 201820246509 U CN201820246509 U CN 201820246509U CN 207975265 U CN207975265 U CN 207975265U
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Abstract
The utility model is related to a kind of bidirectional sealed butterfly valves using fluoroplastics valve seat construction, including valve body, valve seat, butterfly plate, valve rod and driving mechanism, inserts limitation valve seat is displaced outwardly, inserts upper end is limited bit boundary, centre is limit protrusion, valve seat uses fluoroplastics material, with elasticity, valve seat upper end is valve seat lip, centre has the groove for accommodating limit protrusion, there are two inclined-planes for valve seat lip tool, it is close to for being contacted with butterfly plate on one of inclined-plane, another inclined-plane with the limit borderless contact on inserts for being close to, 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 has the function that Two-way tightening seal is realized by natural resiliency deformation in the utility model；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 two way seal butterfly using fluoroplastics valve seat construction
Valve.
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 fluorine modeling to overcome the problems of the above-mentioned prior art
Expect 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 fluoroplastics valve seat construction, including valve body, valve seat, butterfly plate, valve rod and driving machine
Structure opens up import and outlet on the valve body, and the valve seat is arranged on valve body, and the butterfly plate is located in valve body, and with setting
Valve rod connection in valve body, described valve rod one end are located in valve body, and the other end stretches out outside valve body and with setting outside valve body
Driving mechanism connection, butterfly plate is installed with elastic seat on one side, and for cutting through the fluid in pipeline, driving mechanism is used for
The butterfly plate rotation being connect with ovable valve stem and with valve rod, and then realize the keying or adjusting of butterfly valve,
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 inserts upper end is limited bit boundary, and centre is limit protrusion, and the valve seat uses fluoroplastics material, tool
Flexible, the valve seat upper end is valve seat lip, and centre has the groove for accommodating limit protrusion, and there are two the valve seat lip tools
Inclined-plane, one of inclined-plane are close to for being contacted with butterfly plate, another inclined-plane is used to be close to the limit borderless contact on inserts,
The valve seat lip can contact with butterfly plate surface around fulcrum rotation bending, valve seat made to generate seal pressure, valve seat lip is tightly 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.
The limit boundary of the inserts upper end has an inclined-plane, is close to a contact of incline plane of valve seat lip, position-limited edge
The movement of boundary valve seat increases the contact force between valve seat and butterfly plate.
Limit protrusion in the middle part of the inserts is horizontally disposed, and the limit protrusion end is connected in the groove of valve seat, limit
Position protrusion can ensure that valve seat generates Bidirectional static seal.Limit protrusion on inserts, which has, ensures that butterfly valve leaks in neither occurring,
The function of not leaking outside.Inserts has the shape for containing elastic seat, after the limit protrusion and valve seat combination on inserts, can prevent
Only valve seat is blown out in valve opening by high-pressure fluid medium, avoids the failure of valve seal.
The valve seat is vertical plane close to the one side of valve body.
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 limit protrusion of envelope, the limit protrusion on inserts, which has, ensures that valve leaks in neither occurring, the function of also not leaking outside；
3, there is inserts the shape for containing elastic seat, the combination of limit protrusion and elastic seat on inserts can prevent
Elastic seat is blown out in valve opening by high-pressure fluid medium.
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 fluoroplastics valve seat construction 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 fluoroplastics valve seat construction, 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 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 2 upper end of inserts is limited bit boundary 21, and centre is limit protrusion 22, and valve seat 3 uses fluoroplastics material, has bullet
Property, 3 upper end of valve seat is valve seat lip 31, and centre has the groove for accommodating limit protrusion 22, and there are two tiltedly for the tool of valve seat lip 31
Face, one of inclined-plane are close to for being contacted with butterfly plate 4, another inclined-plane with the limit boundary 21 on inserts 2 for contacting tightly
Patch, valve seat lip 31 can contact with 4 surface of butterfly plate around fulcrum rotation bending, valve seat 3 made to generate seal pressure, valve seat lip 31
It is tightly attached to 4 surface of butterfly plate, valve seat 3 realizes two-way initial preload function by natural resiliency deformation, butterfly valve is made to keep lasting sealing
Power.With the increase of pipeline fluid pressure medium, 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.
The limit boundary 21 of 2 upper end of inserts has an inclined-plane, is close to a contact of incline plane of valve seat lip 31, position-limited edge
Boundary 21 limits the movement of valve seat 3, increases the contact force between valve seat 3 and butterfly plate 4.
The limit protrusion 22 at 2 middle part of inserts is horizontally disposed, and 22 end of limit protrusion is connected in the groove of valve seat 3, limit
Protrusion 22 can ensure that valve seat 3 generates Bidirectional static seal.Limit protrusion on inserts, which has, ensures that butterfly valve leaks in neither occurring,
The function of not leaking outside.Inserts has the shape for containing elastic seat, after the limit protrusion 22 and valve seat 3 on inserts 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.Valve seat 3 is close to valve body 1
It is vertical plane on one side.Butterfly plate 4 is inclined-plane with 3 contact site of valve seat.
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 (7)
1. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction, 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), described
Butterfly plate (4) is located in valve body (1), and is connect with the valve rod (5) being arranged in valve body (1), and described valve rod (5) one end is located at valve body
(1) in, 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
It is rotated in 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,
The inserts (2) limitation valve seat (3) is displaced outwardly, and inserts (2) upper end is limited bit boundary (21), and centre is limit convex
It rises (22),
The valve seat (3) uses fluoroplastics material, and it is valve seat lip (31) to have elasticity, valve seat (3) upper end, and centre has
The groove of limit protrusion (22) is accommodated,
Valve seat lip (31) tool is there are two inclined-plane, and one of inclined-plane is close to for being contacted with butterfly plate (4), another inclined-plane
It is close to for being contacted with the limit boundary (21) on inserts (2),
The valve seat lip (31) can make valve seat (3) generate seal pressure around fulcrum rotation bending, same to butterfly plate (4) surface contact,
Valve seat lip (31) is tightly attached to butterfly plate (4) surface.
2. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction according to claim 1, which is characterized in that described
The groove body that limitation valve seat (3) is displaced outwardly is formed between inserts (2) and valve body (1).
3. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction according to claim 2, which is characterized in that described
The limit boundary (21) of inserts (2) upper end has an inclined-plane, is close to a contact of incline plane of valve seat lip (31), limits boundary
(21) movement of limitation valve seat (3) increases the contact force between valve seat (3) and butterfly plate (4).
4. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction according to claim 1, which is characterized in that described
Limit protrusion (22) in the middle part of inserts (2) is horizontally disposed, and limit protrusion (22) end is connected in the groove of valve seat (3),
Limit protrusion (22) can ensure that valve seat (3) generates Bidirectional static seal.
5. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction according to claim 1, which is characterized in that described
Valve seat (3) is vertical plane close to the one side of valve body (1).
6. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction according to claim 1, which is characterized in that described
Butterfly plate (4) is inclined-plane with valve seat (3) contact site.
7. a kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction according to claim 1, which is characterized in that described
Sealing ring is equipped between valve rod (5) and valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820246509.8U CN207975265U (en) | 2018-02-11 | 2018-02-11 | A kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820246509.8U CN207975265U (en) | 2018-02-11 | 2018-02-11 | A kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction |
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| Publication Number | Publication Date |
|---|---|
| CN207975265U true CN207975265U (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820246509.8U Active CN207975265U (en) | 2018-02-11 | 2018-02-11 | A kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction |
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| CN (1) | CN207975265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023212918A1 (en) * | 2022-05-06 | 2023-11-09 | Mueller International, Llc | Valve seat with circumferential rib |
-
2018
- 2018-02-11 CN CN201820246509.8U patent/CN207975265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023212918A1 (en) * | 2022-05-06 | 2023-11-09 | Mueller International, Llc | Valve seat with circumferential rib |
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