CN206530720U - A kind of hard seal butterfly valve - Google Patents
A kind of hard seal butterfly valve Download PDFInfo
- Publication number
- CN206530720U CN206530720U CN201720212191.7U CN201720212191U CN206530720U CN 206530720 U CN206530720 U CN 206530720U CN 201720212191 U CN201720212191 U CN 201720212191U CN 206530720 U CN206530720 U CN 206530720U
- Authority
- CN
- China
- Prior art keywords
- valve
- hard seal
- sealing ring
- spring
- seal butterfly
- 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 hard seal butterfly valve, including valve body, valve seat, Elastic valve clack and valve shaft, Elastic valve clack is from top to bottom by pressing plate, pad, sealing ring, elastic device and butterfly plate composition, face corresponding with sealing ring is provided with the circle groove for prolonging circumferencial direction on butterfly plate, elastic device is arranged in groove, pressing plate lower surface is provided with step, sealing ring and the contact surface of valve seat equal built-up welding high temperature cemented carbide layer, a coil spring is provided between valve seat and valve body, the collision that butterfly plate is produced during quick closedown will jointly be absorbed by elastic device and spring, reduce the vibration to valve pipe, hard seal butterfly valve of the present utility model is simple in construction, it is easy to assembly, high temperature resistant property is good, it is excellent by vibration performance, suitable for the quick closedown of large bore valves, prevent sealing ring and valve seat from hitting cracking and causing valve leak, increase valve service life.
Description
Technical field
The utility model is related to a kind of hard seal butterfly valve, belongs to valve arrangement field.
Background technology
Valve is produced with the generation of fluid circuit.The mankind have had the history of nearly 4000 using valve,
Eleventh Five-Year Plan and forthcoming years, Sinopec, natural gas, metallurgy industry, the every profession and trade such as electric power, urban construction is to valve
There is substantial amounts of demand, prediction net is estimated the Eleventh Five-Year Plan period, and China is up to 34,500,000,000 yuan to the total demand of valve, therefore,
Valve industry has huge market development space, due to valve importance residing in whole pipeline, it is desirable to a part of valve
Door needs to have the function of quick closedown, and the collision produced by during rapid-closure damper can influence the use longevity of valve
Life, or even cause to ftracture at valve seal, particularly in some hard sealed valves, the impulsive force produced by valve is closed can not be by
Eliminate, the selection of the manufacturer of current valve by the sealing ring of valve change that soft graphite added metal piece is made into it is multi-level close
Envelope, although part of impact force can be offset but because soft graphite quality is partially soft, easily come off, therefore service life is not long.
In view of the above problems, it is necessary to take into account how to improve the structure of hard seal butterfly valve.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of hard seal butterfly valve.
In order to realize above-mentioned target, the utility model is adopted the following technical scheme that：
A kind of hard seal butterfly valve, including valve body, valve seat, Elastic valve clack and valve shaft, Elastic valve clack is from top to bottom by pressing plate, pad
Face corresponding with sealing ring is recessed provided with the circle for prolonging circumferencial direction on piece, sealing ring, elastic device and butterfly plate composition, butterfly plate
Groove, elastic device is arranged in groove, and pressing plate lower surface is provided with step, and pad is nested on step；Sealing ring and valve seat
The equal built-up welding high temperature cemented carbide layer of contact surface, provided with 8-12 spring between valve seat and valve body.
Preferably, aforementioned flexible device is ring-spring, and material is potassium steel, effectively can collide sealing ring and valve seat and produce
Raw impulsive force is converted into the displacement that the spring-loaded extruding of ring is formed.
Preferably, aforementioned cyclic spring line footpath is 0.5mm, and the effective sub-valve of ring-spring can be allowed to close rushing for generation
Hit power.
Preferably, foregoing high temperature cemented carbide layer internal layer uses 304 alloys, and outer layer uses nickel-base alloy, using this knot
The hard alloy layer of structure can improve the bond strength of hard alloy layer and matrix while high rigidity is ensured.
Preferably, boss is provided with foregoing valve body internal channel, boss one side corresponding with valve seat is drilled with 8-12 spring
Hole is used to place spring.
Preferably, there is the counterbore for prolonging circumferencial direction distribution on foregoing valve seat, valve seat is fastened on valve body by screw through counterbore
On, prevent screw exposed outside valve seat, increase device aesthetic property.
Preferably, foregoing spring is stud helical spring, the displacement of energy effective compensation valve seat, reduction valve seat and sealing ring
Collide the impulsive force produced.
Preferably, foregoing pad uses flexible graphite gasket, effective compensation sealing circle processing can be missed in assembling process
Difference, it is ensured that sealing ring is brought into close contact with valve seat, prevent leakage.
Preferably, foregoing valve body and butterfly plate are casting, and casting anti-seismic performance can increase due to the anti-seismic performance of weldment
The vibration resistance of single unit system.
It is of the present utility model to be beneficial in that：Hard seal butterfly valve of the present utility model is simple in construction, easy to assembly, anti-height
Warm nature can be good, excellent by vibration performance, it is adaptable to the quick closedown of large bore valves, prevents sealing ring and valve seat from hitting cracking and making
Into valve leak, increase valve service life.
Brief description of the drawings
Fig. 1 is a kind of structural representation of hard seal butterfly valve of the present utility model；
Fig. 2 is the partial enlarged drawing at A in embodiment illustrated in fig. 1；
Fig. 3 is the structural representation of elastic device in the utility model；
The implication of reference in figure：1st, valve body, 2, spring, 3, valve seat, 4, butterfly plate, 5, valve shaft, 6, elastic device, 7, close
Seal, 8, pad, 9, pressing plate.
Embodiment
Make specific introduce to the utility model below in conjunction with the drawings and specific embodiments.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " be only used for describe purpose, and it is not intended that indicate or
Imply relative importance.
Referring to Fig. 1, hard seal butterfly valve of the present utility model includes：Valve body 1, valve seat 3, Elastic valve clack and valve shaft 5, feather valve
Valve is made up of pressing plate 9, pad 8, sealing ring 7, elastic device 6 and butterfly plate 4 from top to bottom, and valve body 1 and butterfly plate 4 are casting, valve
Boss is provided with the internal channel of body 1, boss is drilled with 8-12 spring eye, each spring eye with the corresponding one side of valve seat 3 and is all provided with
There is a spring 2, spring 2 is to have the counterbore for prolonging circumferencial direction distribution on stud helical spring, valve seat 3, and spring 2 is sequentially placed
Compressed, and with screw valve seat 2 is fastened on valve body through counterbore with valve seat 3 after spring eye on boss.
Referring to Fig. 1 to Fig. 3, the circle groove for prolonging circumferencial direction, elasticity are provided with butterfly plate 4 with the corresponding face of sealing ring 7
Device 6 is arranged in groove, and elastic device 6 is ring-spring, and material is potassium steel, and ring-spring line footpath is outside 0.5mm, section
Footpath is greater than depth of groove, and the lower surface of pressing plate 9 is provided with step, and pad 8 is nested on step, and pad 8 uses soft graphite
Elastic device 6, first should be arranged in groove by pad in assembling, then sealing ring 7 is pressed on butterfly plate 4, finally by nesting
The pressing plate 9 of pad 8 is assemblied in compression sealing ring 7 on butterfly plate 4, is tightened with fastener, the thickness of pad 8 is according to sealing ring 7
Actual processing error is adjusted.
Referring to Fig. 2, sealing ring and the contact surface of valve seat equal built-up welding high temperature cemented carbide layer, high temperature cemented carbide layer internal layer
Using 304 alloys, outer layer uses nickel-base alloy, and the combination that hard alloy layer and matrix can be improved while high rigidity is ensured is strong
Degree.
The collision that hard seal butterfly valve butterfly plate of the present utility model is produced during quick closedown will by elastic device and
Spring absorbs jointly, reduces the vibration to valve pipe.
In summary, simple in construction using hard seal butterfly valve of the present utility model, easy to assembly, high temperature resistant property is good, leans on
Vibration performance is excellent, it is adaptable to the quick closedown of large bore valves, prevents sealing ring and valve seat from hitting cracking and causing valve leak,
Increase valve service life.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be
Combined in an appropriate manner in any one or more embodiments or example.
General principle of the present utility model, principal character and advantage has been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
The technical scheme obtained, all falls within protection domain of the present utility model.
Claims (9)
1. a kind of hard seal butterfly valve, it is characterised in that including valve body (1), valve seat (3), Elastic valve clack and valve shaft (5), the bullet
Property flap is made up of pressing plate (9), pad (8), sealing ring (7), elastic device (6) and butterfly plate (4) from top to bottom, the butterfly plate
(4) face corresponding with sealing ring (7) is provided with the circle groove for prolonging circumferencial direction on, and elastic device (6) is arranged in groove, institute
State pressing plate（9）Lower surface is provided with step, and pad（8）It is nested on step；The sealing ring (7) and valve seat (3) contact surface
Equal built-up welding high temperature cemented carbide layer, provided with 8-12 spring (2) between valve seat (3) and valve body (1).
2. a kind of hard seal butterfly valve according to claim 1, it is characterised in that it is ring-spring to tell elastic device (6),
Material is potassium steel.
3. a kind of hard seal butterfly valve according to claim 2, it is characterised in that it is 0.5mm to tell ring-spring line footpath.
4. a kind of hard seal butterfly valve according to claim 1, it is characterised in that the high temperature cemented carbide layer internal layer is adopted
304 alloys are used, outer layer uses nickel-base alloy.
5. a kind of hard seal butterfly valve according to claim 1, it is characterised in that be provided with valve body (1) internal channel
Boss, boss one side corresponding with valve seat (3) is drilled with 8-12 spring eye.
6. a kind of hard seal butterfly valve according to claim 1, it is characterised in that have on the valve seat (3) and prolong circumferencial direction
The counterbore of distribution.
7. a kind of hard seal butterfly valve according to claim 1, it is characterised in that the spring (2) is stud helical spring.
8. a kind of hard seal butterfly valve according to claim 1, it is characterised in that the pad (8) uses soft graphite pad
Piece.
9. a kind of hard seal butterfly valve according to any one in claim 1-8, it is characterised in that the valve body (1) with
Butterfly plate (4) is casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720212191.7U CN206530720U (en) | 2017-03-07 | 2017-03-07 | A kind of hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720212191.7U CN206530720U (en) | 2017-03-07 | 2017-03-07 | A kind of hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530720U true CN206530720U (en) | 2017-09-29 |
Family
ID=59915263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720212191.7U Expired - Fee Related CN206530720U (en) | 2017-03-07 | 2017-03-07 | A kind of hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943947A (en) * | 2021-03-30 | 2021-06-11 | 上海美力德阀门制造有限公司 | High-performance bidirectional sealing butterfly valve |
-
2017
- 2017-03-07 CN CN201720212191.7U patent/CN206530720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943947A (en) * | 2021-03-30 | 2021-06-11 | 上海美力德阀门制造有限公司 | High-performance bidirectional sealing butterfly valve |
| CN112943947B (en) * | 2021-03-30 | 2023-05-30 | 上海美力德阀门制造有限公司 | High-performance bidirectional sealing butterfly valve |
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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: 20170929 Termination date: 20180307 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |