CN204114177U - Wear-resisting, high pressure resistant metal hard-sealing butterfly valve - Google Patents
Wear-resisting, high pressure resistant metal hard-sealing butterfly valve Download PDFInfo
- Publication number
- CN204114177U CN204114177U CN201420364638.9U CN201420364638U CN204114177U CN 204114177 U CN204114177 U CN 204114177U CN 201420364638 U CN201420364638 U CN 201420364638U CN 204114177 U CN204114177 U CN 204114177U
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- ring
- valve
- metallic packing
- valve plate
- sealing
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of wear-resisting, high pressure resistant metal hard-sealing butterfly valve, comprise valve body, valve plate, valve rod, valve plate sealing structure, gland; Valve plate sealing structure to be arranged in gland axle head and valve hole between the shaft shoulder in radial annular groove, is compound sealing structure, comprises metallic packing ring, high-strength abrasion-proof rubber ring; Metallic packing ring is the cascade ring be made up of outer shroud, taper-face ring, inner ring; Metallic packing ring and radial ring fluted shaft are to Spielpassung, and its outer shroud outer wall coordinates with radial annular groove inwall radial clearance; High-strength abrasion-proof rubber ring axial cross section is trapezoidal, and it to be embedded between metallic packing ring inner ring, taper-face ring outer wall and radial annular groove inwall, gland axle head in cavity; Sealing surface of valve plate and metallic packing ring taper-face ring, endocyclic outer wall jointing place closely cooperate; Further improvement is: sealing surface of valve plate is provided with antifriction metal (AFM) layer; Metallic packing ring taper-face ring, endocyclic outer wall jointing place adopt circular sliding slopes.The utility model is wear-resisting, high pressure resistant, and sealing reliability is good.
Description
Technical field
The utility model relates to a kind of valve, relates to a kind of double eccentric butterfly valve specifically.
Background technique
Double eccentric butterfly valve structure characteristic is that valve rod axle center had both been departed from butterfly plate center, also departed from body central, after its effect makes butterfly valve be unlocked, butterfly plate can hightail valve seat, significantly eliminate unnecessary excessive compression, the phenomenon of swiping of butterfly plate and valve seat, alleviate and open resistance square, reduce wearing and tearing, improve longer seat life.The significantly reduction of scraping, make double eccentric butterfly valve also can adopt metal seat valve, expand the application of butterfly valve in high wear medium field, but its sealing principle of metal hard-sealing butterfly valve in the past belongs to position seals structure, namely the sealing surface of butterfly plate and valve seat is linear contact lay, the resiliently deformable caused by butterfly plate extruding valve seat produces sealing effect, therefore very high (particularly metal seat valve) is required to closed position, bearing capacity is low, and when particularly valve needs bidirectional bearing, reverse pressure-bearing is difficult to reach the bearing requirements of forward.
Summary of the invention
The utility model, for the deficiencies in the prior art, proposes one and can significantly improve double eccentric butterfly valve bearing capacity, and can solve wear-resisting, the high pressure resistant metal hard-sealing butterfly valve of the reverse pressure-bearing problem of double eccentric butterfly valve.
The utility model is achieved through the following technical solutions technical goal.
Wear-resisting, high pressure resistant metal hard-sealing butterfly valve, comprises valve body, valve plate, valve rod, valve plate sealing structure, gland; Described valve plate is fixedly connected on valve rod; Described gland is fixedly connected on valve hole nose end; Described valve plate sealing structure is arranged in the radial annular groove in gland axle head and valve hole between the shaft shoulder; Its improvements are: described valve plate sealing structure is compound sealing structure, comprise metallic packing ring, high-strength abrasion-proof rubber ring; Described metallic packing ring is the cascade ring be made up of outer shroud, taper-face ring, inner ring; Described metallic packing ring and radial ring fluted shaft are to Spielpassung, and its outer shroud outer wall coordinates with radial annular groove inwall radial clearance; Described high-strength abrasion-proof rubber ring axial cross section is trapezoidal, and it to be embedded between metallic packing ring inner ring, taper-face ring outer wall and radial annular groove inwall, gland axle head in cavity; Taper-face ring, the endocyclic outer wall jointing place of described sealing surface of valve plate and metallic packing ring closely cooperate.
In said structure, described sealing surface of valve plate is provided with antifriction metal (AFM) layer.
In said structure, described antifriction metal (AFM) layer is stainless steel weld overlays.
In said structure, taper-face ring, the endocyclic outer wall jointing place of described metallic packing ring adopt circular sliding slopes.
The utility model compared with prior art, has following good effect:
1. when butterfly valve forward is closed, valve plate extrusion metal seal ring, high-strength abrasion-proof rubber ring simultaneously between metallic packing ring and valve body is extruded, both seal action was played in its resiliently deformable, there is again the effect of support metal seal ring, make hardness and the rigidity of the existing metal of metallic packing ring, have again the elasticity of rubber.The sealing pair that now sealing surface of valve plate and combined seal structure form forms seal pressure, reaches effect and the requirement of sealing.This combined seal structure significantly improves the bearing capacity of butterfly valve, makes butterfly valve bear high pressure.When oppositely closing, pressure medium is in side by causing the matching gap of the matching gap of the matching gap of valve plate and valve shaft, valve shaft and valve body bearing, bearing and valve body axis hole and the whole accumulative of processing dimension error, namely the side of metallic packing ring is departed from, the seal pressure that the sealing pair that sealing surface of valve plate and combined seal structure are formed is formed reduces, and now metallic packing ring moves in the same way along valve hole axial direction and valve plate and is close to valve plate under pressure medium effect, thus reach the seal pressure of seal request, meet the requirement of oppositely sealing.
2, high-strength abrasion-proof rubber ring axial cross section is trapezoidal, it to be embedded between metallic packing ring inner ring, taper-face ring outer wall and radial annular groove inwall, gland axle head in cavity, when butterfly valve oppositely cuts out, pressure medium acts axially on high-strength abrasion-proof rubber ring, pressure is delivered on metallic packing ring inner ring, taper-face ring by high-strength abrasion-proof rubber ring simultaneously, metallic packing ring and sealing surface of valve plate are closely cooperated, due to high-strength abrasion-proof rubber ring and the whole wall contacts of metallic packing ring taper-face ring, make metallic packing ring homogeneous deformation, make sealing more reliable.
3, sealing surface of valve plate is provided with antifriction metal (AFM) layer, significantly improves the abrasive resistance of sealing surface of valve plate, the working life of significant prolongation butterfly valve.
4, taper-face ring, the endocyclic outer wall jointing place employing circular sliding slopes of metallic packing ring, make metallic packing ring become face with the sealing of sealing surface of valve plate by linear contact lay and contact, improve sealing reliability and bearing capacity further.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is I enlarged schematic partial view in Fig. 1.
Embodiment
Below with reference to the accompanying drawings and the utility model is described in further detail in conjunction with the embodiments.
Wear-resisting shown in accompanying drawing, high pressure resistant metal hard-sealing butterfly valve, comprises valve body 2, valve plate 6, valve rod 7, valve plate sealing structure 3, gland 1; Valve plate 6 is fixedly connected on valve rod 7; Gland 1 is fixedly connected on valve body 2 through hole nose end; Valve plate sealing structure 3 is arranged in the radial annular groove 4 in gland 1 axle head and valve body 2 through hole between the shaft shoulder; Valve plate sealing structure 3 is compound sealing structure, comprises metallic packing ring 3.1, high-strength abrasion-proof rubber ring 3.2; Metallic packing ring 3.1 is the cascade ring be made up of outer shroud 3.1.1, taper-face ring 3.1.2, inner ring 3.1.3, and in the present embodiment, taper-face ring 3.1.2, inner ring 3.1.3 outer wall jointing place adopt circular sliding slopes; Metallic packing ring 3.1 coordinates with radial annular groove 4 axial clearance, and its outer shroud 3.1.1 outer wall coordinates with radial annular groove 4 inwall radial clearance; High-strength abrasion-proof rubber ring 3.2 axial cross section is trapezoidal, and it to be embedded between metallic packing ring 3.1 inner ring 3.1.3, taper-face ring 3.1.2 outer wall and radial annular groove 4 inwall, gland 1 axle head in cavity; Taper-face ring 3.1.2, the inner ring 3.1.3 outer wall jointing place of valve plate 6 sealing surface and metallic packing ring 3.1 closely cooperate.
Valve plate 6 sealing surface is provided with antifriction metal (AFM) layer 6.1, and in the present embodiment, antifriction metal (AFM) layer 6.1 is stainless steel weld overlays.
Claims (4)
1. wear-resisting, a high pressure resistant metal hard-sealing butterfly valve, comprises valve body (2), valve plate (6), valve rod (7), valve plate sealing structure (3), gland (1); Described valve plate (6) is fixedly connected on valve rod (7); Described gland (1) is fixedly connected on valve body (2) through hole nose end; Described valve plate sealing structure (3) is arranged in the radial annular groove (4) in gland (1) axle head and valve body (2) through hole between the shaft shoulder; It is characterized in that: described valve plate sealing structure (3) is compound sealing structure, comprise metallic packing ring (3.1), high-strength abrasion-proof rubber ring (3.2); Described metallic packing ring (3.1) is the cascade ring be made up of outer shroud (3.1.1), taper-face ring (3.1.2), inner ring (3.1.3); Described metallic packing ring (3.1) coordinates with radial annular groove (4) axial clearance, and its outer shroud (3.1.1) outer wall coordinates with radial annular groove (4) inwall radial clearance; Described high-strength abrasion-proof rubber ring (3.2) axial cross section is trapezoidal, and it to be embedded between metallic packing ring (3.1) inner ring (3.1.3), taper-face ring (3.1.2) outer wall and radial annular groove (4) inwall, gland (1) axle head in cavity; Taper-face ring (3.1.2), inner ring (3.1.3) the outer wall jointing place of described valve plate (6) sealing surface and metallic packing ring (3.1) closely cooperate.
2. wear-resisting, high pressure resistant metal hard-sealing butterfly valve according to claim 1, is characterized in that: described valve plate (6) sealing surface is provided with antifriction metal (AFM) layer (6.1).
3. wear-resisting, high pressure resistant metal hard-sealing butterfly valve according to claim 2, is characterized in that: described antifriction metal (AFM) layer (6.1) is stainless steel weld overlays.
4. according to wear-resisting, the high pressure resistant metal hard-sealing butterfly valve one of claims 1 to 3 Suo Shu, it is characterized in that: taper-face ring (3.1.2), inner ring (3.1.3) the outer wall jointing place of described metallic packing ring (3.1) adopt circular sliding slopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364638.9U CN204114177U (en) | 2014-07-03 | 2014-07-03 | Wear-resisting, high pressure resistant metal hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364638.9U CN204114177U (en) | 2014-07-03 | 2014-07-03 | Wear-resisting, high pressure resistant metal hard-sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114177U true CN204114177U (en) | 2015-01-21 |
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ID=52331489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364638.9U Expired - Fee Related CN204114177U (en) | 2014-07-03 | 2014-07-03 | Wear-resisting, high pressure resistant metal hard-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750752A (en) * | 2016-04-05 | 2016-07-13 | 沈阳大学 | Method for preventing crack on partition plate structures of trunnions of steelmaking converters |
-
2014
- 2014-07-03 CN CN201420364638.9U patent/CN204114177U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750752A (en) * | 2016-04-05 | 2016-07-13 | 沈阳大学 | Method for preventing crack on partition plate structures of trunnions of steelmaking converters |
| CN105750752B (en) * | 2016-04-05 | 2017-10-20 | 沈阳大学 | A kind of method for preventing steelmaking converter gudgeon diaphragm structure crackle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20160703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |