CN209725244U - Butterfly valve deformation resistant valve seat - Google Patents
Butterfly valve deformation resistant valve seat Download PDFInfo
- Publication number
- CN209725244U CN209725244U CN201920624032.7U CN201920624032U CN209725244U CN 209725244 U CN209725244 U CN 209725244U CN 201920624032 U CN201920624032 U CN 201920624032U CN 209725244 U CN209725244 U CN 209725244U
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- sealing
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- flap
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Abstract
The utility model discloses a kind of butterfly valve deformation resistant valve seat, including being integrally formed the pedestal on the valve body of butterfly valve, the pedestal is equipped with sealing supporting surface, on the sealing supporting surface heap be welded with can be in sealing contact with flap seal in alloy layer.Seal in alloy layer described in the utility model and the pedestal form integral type built-up welding valve seat, avoid the cost of stainless steel material and processing, while also eliminating the cost using sealing ring and connection bolt, and cost is relatively low.Seal in alloy layer is unlikely to deform, long service life, effectively prevents deforming caused seal leakage, sealing effect is good.
Description
Technical field
The utility model relates to butterfly valve technical field more particularly to a kind of butterfly valve deformation resistant valve seats.
Background technique
Current butterfly valve seal structure is mostly that valve body installs split type valve seat, is then connected split type valve seat by connection bolt
It is connected on the valve body of butterfly valve, an O-ring seal is installed between valve body and split type valve seat to avoid leakage (such as Fig. 3 and Fig. 4
It is shown).This structure has some disadvantages: that (1) split type valve seat difficulty of processing is larger, split type when especially specification is larger
Ellipse easy to form after valve seat processing, easily causes difficult to install, while sealing surface is influenced by deformation, easily causes sealing leak；(2)
O-ring seal structure is set between valve body and split type valve seat, increases leakage point, and since split type valve seat was using
It is easily-deformable in journey, it will cause O-ring seal compression and be unevenly easy to appear sealing leak；(3) connection bolt it is more, cost compared with
It is high and erroneous for installation；(4) split type valve seat is usually stainless steel material, and material cost and manufacturing cost are high.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of structure is simple, cost is relatively low, is unlikely to deform and close
Seal the good butterfly valve deformation resistant valve seat of effect.
In order to solve the above technical problems, the technical solution of the utility model is: butterfly valve deformation resistant valve seat, including one at
Pedestal of the type on the valve body of butterfly valve, the pedestal are equipped with sealing supporting surface, and be welded with can be with valve for heap on the sealing supporting surface
The seal in alloy layer of flap seal contact.
As a preferred technical solution, the seal in alloy layer with a thickness of 2mm.
The sealing supporting surface includes that the alloy-layer front support section set gradually, flap are close as a preferred technical solution,
Supporting section and alloy-layer rear support section are sealed, the seal in alloy layer on the flap sealing supporting section can be sealed with the flap
Contact；The alloy-layer front support section, the flap sealing supporting section and the alloy-layer rear support section be in respectively inner hole gradually
Reduced taper setting, and the taper of the alloy-layer front support section, flap sealing supporting section and the alloy-layer rear support section
It is sequentially reduced.
By adopting the above-described technical solution, butterfly valve deformation resistant valve seat, including being integrally formed on the valve body of butterfly valve
Pedestal, the pedestal are equipped with sealing supporting surface, and heap, which is welded with, on the sealing supporting surface to close with flap sealing in sealing contact
Layer gold.Seal in alloy layer described in the utility model and the pedestal form integral type built-up welding valve seat, avoid stainless steel material and
The cost of processing, while the cost using sealing ring and connection bolt is also eliminated, cost is relatively low.Seal in alloy layer is not variable
Shape, long service life effectively prevent deforming caused sealing leak, and sealing effect is good.
Detailed description of the invention
Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model
It encloses.Wherein:
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is structure enlargement diagram at the I of Fig. 1；
Fig. 3 is the structural schematic diagram of the split type valve seat of the prior art；
Fig. 4 is structure enlargement diagram at the II of Fig. 3.
In figure: 1- valve body；The split type valve seat of 2-；21- connection bolt；22- sealing ring；3- pedestal；4- seals supporting surface；
41- alloy-layer front support section；42- flap seals supporting section；43- alloy-layer rear support section；5- seal in alloy layer；6- flap.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further described.In the following detailed description, only pass through
Bright mode describes the exemplary embodiment of the utility model.Undoubtedly, those skilled in the art may recognize that
It arrives, it, can be with a variety of different modes to described implementation without departing from the spirit and scope of the utility model
Example is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection model for limiting claim
It encloses.
As depicted in figs. 1 and 2, butterfly valve deformation resistant valve seat, including being integrally formed the pedestal 3 on the valve body 1 of butterfly valve, institute
State valve body 1 be usually cast, the pedestal 3 can integrally casting come out.
The pedestal 3 is equipped with sealing supporting surface 4, and be welded with can be in sealing contact with flap 6 for heap on the sealing supporting surface 4
Seal in alloy layer 5.The built-up welding is can be in a kind of economic and quick prior art method of metal surface improved performance, In
This is repeated no more.It is unlikely to deform by the seal in alloy layer 5 that built-up welding is formed, it is made to replace the close of existing split type valve seat 2
Cover can effectively avoid sealing leak caused by deformation.
Sealing supporting surface 4 described in the present embodiment includes the alloy-layer front support section 41 set gradually, flap sealing supporting section
42 and alloy-layer rear support section 43, this sets gradually to be gradually distance from the direction of the flap 6 and setting gradually, the flap sealing
The seal in alloy layer 5 on supporting section 42 can be in sealing contact with the flap 6.The alloy-layer front support section 41, the valve
The taper setting that flap seal supporting section 42 and the alloy-layer rear support section 43 are gradually reduced in inner hole respectively, what this was gradually reduced
Direction is also along the direction far from the flap 6.The alloy-layer front support section 41, flap sealing supporting section 42 and the alloy
The taper of layer rear support section 43 is sequentially reduced.The sealing supporting surface 4 described in this way is from cross section in polyline shaped.The technique of built-up welding
The pedestal 3 may make to form superficial layer, fused layers and base layer from outside to inside at the sealing supporting surface 4, wherein surface
Layer is seal in alloy layer 5 described in the present embodiment, and base layer is consistent with 1 performance of valve body, and the fused layers performance is based on two
Between person, and the seal in alloy layer 5 is subjected to the continuous impact forces of the flap 6 at work, to reduce the impact
Active force brings the fused layers even influence of base layer, and the sealing supporting surface 4 is set as three sections by the present embodiment.Middle section pair
The seal in alloy layer 5 and the flap 6 answered are in sealing contact, remaining two sections described seal in alloy layer 5 is formed described in middle section
The clip effect of 5 pairs of the seal in alloy layer pedestals 3, the impact for giving seal in alloy layer 5 described in middle section from the flap 6 are made
Firmly, it can be divided on every section of seal in alloy layer 5 and be parallel to fusion layer surface and perpendicular to fusion two points of layer surface
Power, fused layers also just by three sections of different directions and active force of different sizes, can reduce the molten of single direction active force generation
It closes layer unidirectionally to deform, ensure that the sealing effect of the seal in alloy layer 5, improve its service life.
Seal in alloy layer 5 described in the present embodiment with a thickness of 2mm, the processing is simple, and cost is relatively low.
Seal in alloy layer 5 described in the present embodiment and the pedestal 3 form integral type built-up welding valve seat, avoid stainless steel material
With the cost of processing, while also eliminate using sealing ring 22 and connection bolt 21 cost, cost is relatively low.The seal in alloy
Layer 5 is unlikely to deform, and long service life effectively prevents deforming caused sealing leak, and sealing effect is good.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (3)
1. butterfly valve deformation resistant valve seat, it is characterised in that: including being integrally formed pedestal on the valve body of butterfly valve, on the pedestal
Equipped with sealing supporting surface, it is described sealing supporting surface on heap be welded with can be in sealing contact with flap seal in alloy layer.
2. butterfly valve as described in claim 1 deformation resistant valve seat, it is characterised in that: the seal in alloy layer with a thickness of 2mm.
3. butterfly valve as claimed in claim 1 or 2 deformation resistant valve seat, it is characterised in that: the sealing supporting surface includes successively
The alloy-layer front support section of setting, flap seal supporting section and alloy-layer rear support section, the institute on the flap sealing supporting section
Stating seal in alloy layer can be in sealing contact with the flap；The alloy-layer front support section, flap sealing supporting section and described
Alloy-layer rear support section is in the taper setting that inner hole is gradually reduced respectively, and the sealing of the alloy-layer front support section, flap supports
The taper of section and the alloy-layer rear support section is sequentially reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624032.7U CN209725244U (en) | 2019-04-30 | 2019-04-30 | Butterfly valve deformation resistant valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624032.7U CN209725244U (en) | 2019-04-30 | 2019-04-30 | Butterfly valve deformation resistant valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209725244U true CN209725244U (en) | 2019-12-03 |
Family
ID=68674062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920624032.7U Active CN209725244U (en) | 2019-04-30 | 2019-04-30 | Butterfly valve deformation resistant valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209725244U (en) |
-
2019
- 2019-04-30 CN CN201920624032.7U patent/CN209725244U/en active Active
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