CN207034207U - Wafer type very-high performance double eccentric butterfly valve - Google Patents
Wafer type very-high performance double eccentric butterfly valve Download PDFInfo
- Publication number
- CN207034207U CN207034207U CN201720968708.5U CN201720968708U CN207034207U CN 207034207 U CN207034207 U CN 207034207U CN 201720968708 U CN201720968708 U CN 201720968708U CN 207034207 U CN207034207 U CN 207034207U
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- Prior art keywords
- valve
- wafer type
- butterfly
- ring
- high performance
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- Expired - Fee Related
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Abstract
A kind of wafer type very-high performance double eccentric butterfly valve is the utility model is related to, belongs to butterfly valve technical field.The wafer type very-high performance double eccentric butterfly valve includes wafer type valve body, valve shaft and butterfly plate, the butterfly plate is positioned among the valve pocket of wafer type valve body, the valve shaft is arranged in the eccentric ladder hole of wafer type valve body upper end successively, the eccentric through-hole of butterfly plate and the eccentric blind hole of wafer type valve body lower end, the butterfly plate is fixed on valve shaft by forced direct selling, valve pocket one end of the wafer type valve body is provided with the ring-shaped valve seats being engaged with butterfly plate sealing surface, the ring-shaped valve seats is the S-shaped elastic packing valve seat in cross section, the ring-shaped valve seats is pressed on by dismountable annular insert in the valve pocket of wafer type valve body.The butterfly valve is designed using unique elastic packing valve seat, and its S-shaped structure can compensate for the change of temperature and pressure, and because of the sealing compensation that long-term switch is used and worn, service life length, maintenance capacity is few, and two way seal experiment reaches bubble-free leakage.
Description
Technical field
The utility model belongs to butterfly valve technical field, and in particular to a kind of wafer type very-high performance double eccentric butterfly valve.
Background technology
Butterfly valve refers to that butterfly plate rotates around valve shaft and reaches a kind of valve of open and close, available for controlling empty gas and water, steaming
The flowing of all kinds fluid such as vapour, Korrosionsmedium, mud, oil product, liquid metal and radiating medium.At present, it is existing
Butterfly valve seat is unable to the change of compensation temperature and pressure, can not compensate because long-term switch uses and wears, sealing is poor, needs
Increase O-ring or metal parts to keep sealing, service life is short, and valve seat disassembling, assembling and replacing bothers.
Utility model content
In order to overcome the shortcomings of the prior art, technical problem to be solved in the utility model is to provide a kind of valve seat
The wafer type very-high performance double eccentric butterfly valve of convenient disassembly, good sealing effect and service life length.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of double eccentric butterflies of wafer type very-high performance
Valve, including wafer type valve body, valve shaft and butterfly plate, the butterfly plate are positioned among the valve pocket of wafer type valve body, and the valve shaft is successively
The eccentric blind hole of the eccentric ladder hole of wafer type valve body upper end, the eccentric through-hole of butterfly plate and wafer type valve body lower end is arranged in,
The butterfly plate is fixed on valve shaft by forced direct selling, and valve pocket one end of the wafer type valve body is provided with and butterfly plate sealing surface
The ring-shaped valve seats being engaged, the ring-shaped valve seats are the S-shaped elastic packing valve seat in cross section, and the ring-shaped valve seats is by removable
The annular insert unloaded is pressed in the valve pocket of wafer type valve body.
Further, the material of the ring-shaped valve seats is PTFE material, RPTFE materials, PPL materials or PEEK materials.
Further, the valve shaft is arranged with for keeping butterfly plate center respectively in the upper and lower ends position of butterfly plate
Thrust back-up ring.
Further, the material of the thrust back-up ring is 316 stainless steels.
Further, the eccentric ladder hole is led to by the downstairs of larger-diameter upper ladder hole and small diameter
Hole is formed, and the composite shaft sleeve being engaged with valve shaft is respectively arranged with the downstairs through hole and eccentric blind hole.
Further, the surface layer material of the composite shaft sleeve is PTFE material or RPTFE materials, the lining of the composite shaft sleeve
In material be 316 stainless steels.
Further, it is provided with the upper ladder hole and is surrounded on the axial filler group of valve, the bottom of the filler group
Portion is provided with the filler packing ring being sheathed on valve shaft, and the filler group is to be pressed on by gland in upper ladder hole.
Further, the gland is fixed on the upper end of wafer type valve body by stud and nut.
Further, the material of the filler group is PTFE material, RPTFE materials or graphite material.
Further, valve pocket one end madial wall of the wafer type valve body is provided with the first neck, the annular insert
The second neck that lateral wall is provided with, the width of second neck is bigger than the width of the first neck, is set in first neck
It is equipped with the snap ring coordinated with the second neck gap.
Compared with prior art, the utility model has the advantages that：The butterfly valve uses unique elastic-sealing-valve
Seat design, its S-shaped structure can compensate for the change of temperature and pressure, and because of the sealing compensation that long-term switch is used and worn, bullet
Property it is good, reliability is high, keeps sealing without increasing O-ring or metal parts, service life length, and maintenance capacity is few, two way seal
Experiment reaches bubble-free leakage；With excellent control characteristic, rating curve etc. than changing, adjustable range is wide, that is, uses
Tight seal is remained in control.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model embodiment.
Fig. 2 is the enlarged drawing at A in Fig. 1.
Fig. 3 is schematic diagrames of the Fig. 2 when annular insert side is pressurized.
Fig. 4 is schematic diagrames of the Fig. 2 when other than ring type insert side is pressurized.
Fig. 5 is Fig. 1 right view.
Marked in figure：1st, wafer type valve body；2nd, valve shaft；21st, flat position；3rd, butterfly plate；4th, forced direct selling；5th, ring-shaped valve seats；
6th, annular insert；7th, thrust back-up ring；8th, composite shaft sleeve；9th, filler group；10th, filler packing ring；11st, gland；12nd, the first card
Groove；13rd, the second neck；14th, snap ring；15th, stud；16th, nut.
Embodiment
In order to allow features described above and advantage of the present utility model to become apparent, below especially exemplified by embodiment, and coordinate accompanying drawing,
It is described in detail below.
As shown in Fig. 1 ~ 5, a kind of wafer type very-high performance double eccentric butterfly valve, including wafer type valve body 1（I.e. without flange）, valve
Axle 2 and butterfly plate 3, the butterfly plate 3 are positioned among the valve pocket of wafer type valve body 1, and the valve shaft 2 is arranged in wafer type valve body successively
The eccentric blind hole of the eccentric ladder hole of 1 upper end, the eccentric through-hole of butterfly plate 3 and the lower end of wafer type valve body 1, the butterfly plate 3 pass through
Forced direct selling 4 is fixed on valve shaft 2, and valve pocket one end of the wafer type valve body 1 is provided with what is be engaged with the sealing surface of butterfly plate 3
Ring-shaped valve seats 5, the ring-shaped valve seats 5 are the S-shaped elastic packing valve seat in cross section, and the ring-shaped valve seats 5 is by dismountable
Annular insert 6 is pressed in the valve pocket of wafer type valve body 1.
In the present embodiment, the material of the ring-shaped valve seats 5 is preferably but not limited to PTFE material, RPTFE materials, PPL
Material or PEEK materials, elastic good, long lifespan.The material of the annular insert 6 is preferably but not limited to carbon steel, prevents annular plate valve
The abrasion of seat 5 and corrosion.Because double bias of valve shaft 2 and butterfly plate 3 design, therefore the ring-shaped valve seats when opening and being in an intermediate position
5 are not in contact with butterfly plate 3, and in ring-shaped valve seats, position is without wear point about 5, and service life length, operation moment of torsion is small, to operating machine
Structure（Manually, polished rod, worm-drive, pneumatically or electrically）Requirement it is low.When ring-shaped valve seats 5 needs repairing maintenance, as long as removing
The annular insert 6 of activity is replaceable ring-shaped valve seats 5 and maintenance sealing surface, it is not necessary to dismantles valve shaft 2 and butterfly plate 3, maintains quick side
Just.
In the present embodiment, the valve shaft 2 is arranged with for keeping in butterfly plate 3 respectively in the upper and lower ends position of butterfly plate 3
The thrust back-up ring 7 of heart position.Wherein, the material of the thrust back-up ring 7 is preferably but not limited to 316 stainless steels.It is described forced
It is more stable that direct selling 4 makes valve shaft 2 be combined with butterfly plate 3, while outward appearance is cleaner and tidier, the trafficability performance of effective amplified medium.The valve shaft 2
Using single diameter monolithic construction, deviation can be reduced to minimum；The top of the valve shaft 2 is provided with flat position 21, for showing
Show that butterfly plate 3 is in correct position.
In the present embodiment, the eccentric ladder hole is the lower rank by larger-diameter upper ladder hole and small diameter
Terraced through hole is formed, and the composite shaft sleeve 8 being engaged with valve shaft 2 is respectively arranged with the downstairs through hole and eccentric blind hole.Wherein,
The surface layer material of the composite shaft sleeve 8 is PTFE material or RPTFE materials, and the lining material of the composite shaft sleeve 8 is stainless for 316
Steel, corrosion resistance is high, and can self-lubricating.
In the present embodiment, the filler group 9 being surrounded on around valve shaft 2, the filler are provided with the upper ladder hole
The bottom of group 9 is provided with the filler packing ring 10 being sheathed on valve shaft 2, and the filler group 9 is to be pressed on upper rank by gland 11
In terraced through hole.Wherein, the gland 11 is fixed on the upper end of wafer type valve body 1 by stud 15 and nut 16.Wherein, institute
The material for stating filler group 9 is preferably but not limited to PTFE material, RPTFE materials or graphite material.
In the present embodiment, valve pocket one end madial wall of the wafer type valve body 1 is provided with the first neck 12, the annular
The second neck 13 that the lateral wall of inserts 6 is provided with, the width of second neck 13 is bigger than the width of the first neck 12, described
The snap ring 14 coordinated with the gap of the second neck 13 is provided with first neck 12.
As shown in Fig. 2 when valve is closed, butterfly plate 3 makes ring-shaped valve seats 5 deform slightly, and this deformation has encouraged ring-shaped valve seats
5, the excitation of the sealing surface of ring-shaped valve seats 5 makes the edge of it and butterfly plate 3 keep lasting sealing.As shown in figure 3, work as annular insert 6
When side is pressurized, the antelabium that pressure is applied in elastic packing valve seat increases between butterfly plate 3 and ring-shaped valve seats 5 further below
Sealing force.As shown in figure 4, when pressure puts on the side of other than ring type inserts 6, butterfly plate 3 is pushed to ring-shaped valve seats 5.Due to butterfly
The profile of plate 3 is spherical in shape, and butterfly plate 3 more promotes to ring-shaped valve seats 5, closes closer；Antelabium and the groove of the bottom of annular insert 6 connect
Touch, the excess for limiting ring-shaped valve seats 5 is mobile.
It is described above, preferred embodiment only of the present utility model, any formal limit is not done to the utility model
System, any those skilled in the art are in every case without departing from the content of technical solutions of the utility model, according to the utility model
Technical spirit any simple modification, equivalent changes and modifications are made to above example, should all belong to culvert of the present utility model
Lid scope.
Claims (10)
- A kind of 1. wafer type very-high performance double eccentric butterfly valve, it is characterised in that：It is described including wafer type valve body, valve shaft and butterfly plate Butterfly plate is positioned among the valve pocket of wafer type valve body, and the eccentric ladder that the valve shaft is arranged in wafer type valve body upper end successively leads to The eccentric blind hole in hole, the eccentric through-hole of butterfly plate and wafer type valve body lower end, the butterfly plate are fixed on valve shaft by forced direct selling On, valve pocket one end of the wafer type valve body is provided with the ring-shaped valve seats being engaged with butterfly plate sealing surface, and the ring-shaped valve seats is The S-shaped elastic packing valve seat in cross section, the ring-shaped valve seats are to be pressed on wafer type valve body by dismountable annular insert In valve pocket.
- 2. wafer type very-high performance double eccentric butterfly valve according to claim 1, it is characterised in that：The material of the ring-shaped valve seats Matter is PTFE material, RPTFE materials, PPL materials or PEEK materials.
- 3. wafer type very-high performance double eccentric butterfly valve according to claim 1, it is characterised in that：The valve shaft is in butterfly plate Upper and lower ends position is arranged with the thrust back-up ring for keeping butterfly plate center respectively.
- 4. wafer type very-high performance double eccentric butterfly valve according to claim 3, it is characterised in that：The material of the thrust back-up ring Matter is 316 stainless steels.
- 5. wafer type very-high performance double eccentric butterfly valve according to claim 1, it is characterised in that：The eccentric ladder hole It is made up of the downstairs through hole of larger-diameter upper ladder hole and small diameter, in the downstairs through hole and eccentric blind hole It is respectively arranged with the composite shaft sleeve being engaged with valve shaft.
- 6. wafer type very-high performance double eccentric butterfly valve according to claim 5, it is characterised in that：The face of the composite shaft sleeve Layer material is PTFE material or RPTFE materials, and the lining material of the composite shaft sleeve is 316 stainless steels.
- 7. wafer type very-high performance double eccentric butterfly valve according to claim 5, it is characterised in that：In the upper ladder hole It is provided with and is surrounded on the axial filler group of valve, the bottom of the filler group is provided with the filler packing ring being sheathed on valve shaft, institute It is to be pressed on by gland in upper ladder hole to state filler group.
- 8. wafer type very-high performance double eccentric butterfly valve according to claim 7, it is characterised in that：The gland passes through Stud and nut are fixed on the upper end of wafer type valve body.
- 9. wafer type very-high performance double eccentric butterfly valve according to claim 7, it is characterised in that：The material of the filler group For PTFE material, RPTFE materials or graphite material.
- 10. wafer type very-high performance double eccentric butterfly valve according to claim 1, it is characterised in that：The wafer type valve body Valve pocket one end madial wall be provided with the first neck, the second neck that the lateral wall of the annular insert is provided with, described second The width of neck is bigger than the width of the first neck, and the snap ring coordinated with the second neck gap is provided with first neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720968708.5U CN207034207U (en) | 2017-08-04 | 2017-08-04 | Wafer type very-high performance double eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720968708.5U CN207034207U (en) | 2017-08-04 | 2017-08-04 | Wafer type very-high performance double eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207034207U true CN207034207U (en) | 2018-02-23 |
Family
ID=61474004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720968708.5U Expired - Fee Related CN207034207U (en) | 2017-08-04 | 2017-08-04 | Wafer type very-high performance double eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207034207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930799A (en) * | 2018-09-07 | 2018-12-04 | 巴顿阀门（杭州）有限公司 | Double eccentric butterfly valve |
-
2017
- 2017-08-04 CN CN201720968708.5U patent/CN207034207U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930799A (en) * | 2018-09-07 | 2018-12-04 | 巴顿阀门（杭州）有限公司 | Double eccentric butterfly valve |
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| 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: 20180223 Termination date: 20210804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |