CN208474528U - A kind of butterfly valve seat - Google Patents
A kind of butterfly valve seat Download PDFInfo
- Publication number
- CN208474528U CN208474528U CN201820991792.7U CN201820991792U CN208474528U CN 208474528 U CN208474528 U CN 208474528U CN 201820991792 U CN201820991792 U CN 201820991792U CN 208474528 U CN208474528 U CN 208474528U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- rubber sleeve
- flange
- seat rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of butterfly valve seats, belong to valve technology field, including valve seat rubber sleeve and valve seat housing, the valve seat housing coaxial sleeve is set to outside the valve seat rubber sleeve and is in close contact with the valve seat rubber sleeve, the valve seat rubber sleeve medial surface includes valve base sealing cylinder and two valve seat non-tight conical surfaces, valve base sealing cylinder both ends are connect with the small end of the valve seat non-tight conical surface respectively, the valve base sealing cylinder and valve seat non-tight conical surface coaxial arrangement.During opening and closing, butterfly plate is rotated to valve base sealing cylinder two sides and the valve seat non-tight taper-face contact being obliquely installed, and the frictional force between butterfly plate and valve seat rubber sleeve is effectively reduced, to reduce the driving torque of valve rod.
Description
Technical field
The utility model relates to valve technology fields, more particularly to a kind of butterfly valve seat.
Background technique
Valve seat is one of major part of butterfly valve, the existing generally existing following defect of butterfly valve seat: first, structure compares
Single, for butterfly valve during opening and closing, the frictional force between butterfly plate and valve seat rubber sleeve is excessive, causes valve rod driving torque
Excessive, valve opening and closing is difficult, while valve seat rubber sleeve is easy to wear, and service life is short, and maintenance cost is high；Second, valve seat rubber sleeve
It is combined together between valve seat housing by heating vulcanization, after causing valve seat rubber sleeve to wear, is difficult by its detachable maintaining, very
To need to be by entire peripheral structure dismounting and change together；Third, the abrasion of valve rod mounting hole or deformation cause to deposit between valve rod and hole wall
In gap, valve seat and flange are face contact, and above structure will cause liquid leakage, and sealing effect is bad；Therefore, market needs
It is a kind of it is easy to operate it is laborsaving, durable, easy to disassemble maintenance, good airproof performance butterfly valve seat.
Utility model content
The purpose of the utility model is to provide a kind of butterfly valve seats to make butterfly to solve the above-mentioned problems of the prior art
Valve valve rod torque reduces, and maintenance easy to disassemble extends the service life of valve seat, improves the sealing performance of valve seat.
To achieve the above object, the utility model provides following scheme:
The utility model provides a kind of butterfly valve seat, comprising: valve seat rubber sleeve and valve seat housing, the valve seat housing are coaxial
It is sheathed on outside the valve seat rubber sleeve and is in close contact with the valve seat rubber sleeve, the valve seat rubber sleeve medial surface includes
Valve base sealing cylinder and two valve seat non-tight conical surfaces, valve base sealing cylinder both ends respectively with a valve seat non-tight
The small end of the conical surface connects, the valve base sealing cylinder and valve seat non-tight conical surface coaxial arrangement.
Optionally, the valve seat housing and the valve seat rubber sleeve are interference fit connection.
Optionally, diametrically disposed on the valve seat rubber sleeve to have valve rod mounting hole, the valve seat rubber sleeve side wall
On the both ends of the valve rod mounting hole are provided with the annular flange to extend radially outwardly along the valve seat rubber sleeve, the valve rod
Mounting hole runs through the annular flange, puts on outside the valve seat and is provided with flange hole, and it is logical that the flange is inserted into the flange
Kong Zhong, and the outer wall of the flange and the inner wall of the flange hole fit closely.
Optionally, a gasket seal is provided with outside the annular flange, the thickness of the valve seat housing is equal to the flange
The sum of height and the gasket seal thickness.
Optionally, several valve stem seal bulge loops, institute have been arranged circumferentially in the valve rod mounting hole wall of the valve seat rubber sleeve
It states valve stem seal bulge loop and the valve seat rubber sleeve is integrally formed and is arranged, after valve rod is inserted into the valve rod mounting hole, the valve
Bar sealing bulge loop is fitted closely by natural resiliency on valve rod outer wall.
Optionally, the valve seat rubber sleeve is greater than the thickness of other positions in the thickness of the valve rod position of mounting hole.
Optionally, circumferential direction is coaxially arranged with several flanges on the annular end face of the both-side opening periphery of the valve seat rubber sleeve
Sealing ring, the flange seal ring and the valve seat rubber sleeve are integrally formed, and the flange seal ring and the valve seat rubber
Set is coaxially disposed, and forms seal groove between the adjacent flange seal ring.
Optionally, the angle between the valve seat non-tight conical surface and the valve base sealing cylindrical axis is greater than 10 °.
The utility model achieves following technical effect compared with the existing technology:
Butterfly valve seat provided by the utility model passes through the mutual angled valve of medial surface setting in valve seat rubber sleeve
Seat sealing cylinder and two valve seat non-tight conical surfaces effectively reduce butterfly plate and valve seat rubber sleeve in valve opening and closing process
Between frictional force, so that the driving moment of valve rod is reduced, so that valve operation is simply laborsaving；
Further, valve seat housing and valve seat rubber sleeve are interference fit connection, and staff can remove valve seat rubber easily
Gum cover is repaired or replaced, and saves material and maintenance cost；
Further, valve seat rubber sleeve protrudes into the annular of the flange hole of valve seat housing in the setting of the both ends of valve rod mounting hole
The setting of flange and annular flange external seal gasket can effectively prevent seam of the liquid between valve seat rubber sleeve and valve seat housing
Gap leakage；The valve stem seal bulge loop being arranged circumferentially in valve rod mounting hole wall can effectively prevent liquid from valve rod mounting hole wall with
Gap leakage between valve rod；It is realized on the contact surface that valve seat rubber sleeve and flange are set of flange seal ring annular linear
Sealing；The above measure improves the sealing performance of valve seat.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is butterfly valve seat provided by the utility model along the cross-sectional view perpendicular to valve rod mounting hole direction；
Fig. 2 is the top view of butterfly valve seat provided by the utility model；
Fig. 3 is the cross-sectional view along valve rod mounting hole axis of butterfly valve seat provided by the utility model；
In figure: 1- valve seat rubber sleeve；2- valve seat housing；3- flange seal ring；4- valve base sealing cylinder；5- valve seat non-tight
The conical surface；6- seal groove；7- valve rod mounting hole；8- valve stem seal bulge loop；9- annular flange；10- flange hole.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of butterfly valve seats to make butterfly to solve the above-mentioned problems of the prior art
Valve valve rod torque reduces, and maintenance easy to disassemble extends the service life of valve seat, improves the sealing performance of valve seat.
The utility model provides a kind of butterfly valve seat, including valve seat rubber sleeve and valve seat housing, and the valve seat housing is coaxial
It is sheathed on outside the valve seat rubber sleeve and is in close contact with the valve seat rubber sleeve, the valve seat rubber sleeve medial surface includes
Valve base sealing cylinder and two valve seat non-tight conical surfaces, valve base sealing cylinder both ends respectively with a valve seat non-tight
The small end of the conical surface connects, the valve base sealing cylinder and valve seat non-tight conical surface coaxial arrangement.
Butterfly valve seat provided by the utility model passes through the mutual angled valve of medial surface setting in valve seat rubber sleeve
Seat sealing cylinder and two valve seat non-tight conical surfaces effectively reduce butterfly plate and valve seat rubber sleeve in valve opening and closing process
Between frictional force, so that the driving moment of valve rod is reduced, so that valve operation is simply laborsaving.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
The utility model provides a kind of butterfly valve seat, comprising: valve seat rubber sleeve 1 and valve seat housing 2, valve seat housing 2 are coaxial
It is sheathed on outside valve seat rubber sleeve 1 and is in close contact with valve seat rubber sleeve 1,1 medial surface of valve seat rubber sleeve includes valve base sealing cylinder 4
With two valve seat non-tight conical surfaces 5,4 both ends of valve base sealing cylinder are connect with a valve seat non-tight conical surface 5 respectively, valve base sealing
Cylinder 4 and the valve seat non-tight conical surface 5 are coaxially disposed, and the valve seat inner space that the valve seat non-tight conical surface 5 is surrounded is by valve seat rubber
1 middle part of gum cover is gradually increased to both-side opening diameter.
Carry out valve closing motion when, driving stem drive butterfly plate rotation, when butterfly plate turn to close to closure when, first with incline
The valve seat non-tight conical surface 5 being tiltedly arranged contacts, and finally rotates to the center of valve base sealing cylinder 4, completes valve and is closed work
Make；When carrying out valve opening movement, driving stem drives butterfly plate rotation, and it is non-close that butterfly plate by valve base sealing cylinder 4 is transitioned into valve seat
The conical surface 5 is sealed, valve opening work is completed.Pass through the mutual angled valve base sealing of medial surface setting in valve seat rubber sleeve 1
Cylinder 4 and two valve seat non-tight conical surfaces 5, effectively reduce in valve opening and closing process butterfly plate and valve seat rubber sleeve 1 it
Between frictional force, so that the driving moment of valve rod is reduced, so that valve operation is simply laborsaving.
Further, valve seat housing 2 and valve seat rubber sleeve 1 are interference fit connection.
When valve seat rubber sleeve 2 breaks down, staff can remove it by its own elasticity from butterfly valve seat,
It is convenient and efficient it to be repaired or replaced.
Further, diametrically disposed on valve seat rubber sleeve 1 to have valve rod mounting hole 7, valve seat rubber sleeve 1 is pacified in valve rod
The both ends in dress hole 7 are provided with the annular flange 9 to extend radially outwardly along valve seat rubber sleeve 1, and valve rod mounting hole 7 runs through annular flange
9, be provided with flange hole 10 on valve seat housing 2, annular flange 9 is inserted into flange hole 10, and the outer wall of annular flange 9 with
The inner wall of flange hole 10 fits closely.
Outwardly extending annular flange 9 realize between 2 contact surface of valve seat rubber sleeve 1 and valve seat housing gap it is effective
It blocks, prevents highly pressurised liquid along the gap leakage.
Further, be provided with a gasket seal outside annular flange 9, the thickness of valve seat housing 2 be equal to flange height with it is close
The sum of gasket thickness.
Further, several valve stem seal bulge loops 8, valve have been arranged circumferentially on 7 hole wall of valve rod mounting hole of valve seat rubber sleeve 1
Bar, which seals bulge loop 8 and valve seat rubber sleeve 1 and is integrally formed, to be arranged, after valve rod is inserted into valve rod mounting hole 7, valve stem seal bulge loop 8 according to
It fits closely by natural resiliency on valve rod outer wall.
After installing valve rod, valve stem seal bulge loop 8 has effectively blocked highly pressurised liquid along between 7 hole wall of valve rod mounting hole and valve rod
The route that leaks in gap.
Further, thickness of the valve seat rubber sleeve 1 in 7 position of valve rod mounting hole is greater than the thickness of other positions, strengthens
Valve seat rubber sleeve 1 resists the performance of valve rod mechanical pressure, extends the service life of valve seat rubber sleeve 1.
Further, circumferential direction is coaxially arranged with several flanges on the annular end face of the both-side opening periphery of valve seat rubber sleeve 1
Sealing ring 3, flange seal ring 3 and valve seat rubber sleeve 1 are integrally formed, and flange seal ring 3 and valve seat rubber sleeve 1 are coaxially disposed,
Seal groove 6 is formed between adjacent flanges sealing ring 3.
Flange seal ring 3 forms annular linear sealing on valve seat rubber sleeve 1 and flange contact facings, completes butterfly valve seat
After installation, by the own resilient of extruding force and flange seal ring 3 between butterfly valve seat and flange, so that flange seal ring
It is fitted closely between 3 and flange, has effectively blocked highly pressurised liquid along the route that leaks in gap between butterfly valve seat and flange.
Further, the angle between 4 axis of the valve seat non-tight conical surface 5 and valve base sealing cylinder is greater than 10 °.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of butterfly valve seat, it is characterised in that: include: valve seat rubber sleeve and valve seat housing, the valve seat housing is coaxially arranged
It is in close contact in outside the valve seat rubber sleeve and with the valve seat rubber sleeve, the valve seat rubber sleeve medial surface includes valve base sealing
Cylinder and two valve seat non-tight conical surfaces, valve base sealing cylinder both ends are small with valve seat non-tight conical surface respectively
End connection, the valve base sealing cylinder and valve seat non-tight conical surface coaxial arrangement.
2. butterfly valve seat according to claim 1, it is characterised in that: the valve seat housing and the valve seat rubber sleeve were
It is full of mating connection.
3. butterfly valve seat according to claim 1, it is characterised in that: diametrically disposed on the valve seat rubber sleeve to have
Valve rod mounting hole is provided with along the valve seat rubber sleeve diameter on the valve seat rubber sleeve side wall at the both ends of the valve rod mounting hole
To outwardly extending annular flange, the valve rod mounting hole runs through the annular flange, puts on outside the valve seat and is provided with flange
Through-hole, the annular flange are inserted into the flange hole, and the outer wall of the annular flange and the flange hole is interior
Wall fits closely.
4. butterfly valve seat according to claim 3, it is characterised in that: it is provided with a gasket seal outside the annular flange,
The thickness of the valve seat housing is equal to the sum of the flange height and the gasket seal thickness.
5. butterfly valve seat according to claim 3, it is characterised in that: in the valve rod mounting hole wall of the valve seat rubber sleeve
Several valve stem seal bulge loops are arranged circumferentially, the valve stem seal bulge loop and the valve seat rubber sleeve, which are integrally formed, to be arranged, and valve is worked as
After bar is inserted into the valve rod mounting hole, the valve stem seal bulge loop is fitted closely by natural resiliency on valve rod outer wall.
6. butterfly valve seat according to claim 3, it is characterised in that: the valve seat rubber sleeve installs hole location in the valve rod
The thickness set is greater than the thickness of other positions.
7. butterfly valve seat according to claim 1, it is characterised in that: the ring of the both-side opening periphery of the valve seat rubber sleeve
Circumferential direction is coaxially arranged with several flange seal rings on shape end face, and the flange seal ring and the valve seat rubber sleeve are integrally formed,
And the flange seal ring and the valve seat rubber sleeve are coaxially disposed, and form seal groove between the adjacent flange seal ring.
8. butterfly valve seat according to claim 1, it is characterised in that: the valve seat non-tight conical surface and the valve base sealing
Angle between cylindrical axis is greater than 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820991792.7U CN208474528U (en) | 2018-06-26 | 2018-06-26 | A kind of butterfly valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820991792.7U CN208474528U (en) | 2018-06-26 | 2018-06-26 | A kind of butterfly valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474528U true CN208474528U (en) | 2019-02-05 |
Family
ID=65215165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820991792.7U Expired - Fee Related CN208474528U (en) | 2018-06-26 | 2018-06-26 | A kind of butterfly valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561571A (en) * | 2018-06-26 | 2018-09-21 | 宁津美华工业有限公司 | A kind of butterfly valve seat |
-
2018
- 2018-06-26 CN CN201820991792.7U patent/CN208474528U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561571A (en) * | 2018-06-26 | 2018-09-21 | 宁津美华工业有限公司 | A kind of butterfly valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20190626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |