CN202790581U - Double seal metal rigidity seal butterfly valve - Google Patents
Double seal metal rigidity seal butterfly valve Download PDFInfo
- Publication number
- CN202790581U CN202790581U CN201220504235.0U CN201220504235U CN202790581U CN 202790581 U CN202790581 U CN 202790581U CN 201220504235 U CN201220504235 U CN 201220504235U CN 202790581 U CN202790581 U CN 202790581U
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- valve
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- butterfly plate
- seal
- stainless steel
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Abstract
The utility model relates to a double seal metal rigidity seal butterfly valve which comprises a valve body, valve rods and a butterfly plate. The butterfly plate is arranged in the middle of the valve body. A driving structure can be formed by the valve rods arranged on the upper portion of the butterfly plate and the lower portion of the butterfly plate, and meanwhile a sealing structure is arranged between a butterfly plate sealing surface and the valve body. The double seal metal rigidity seal butterfly valve is characterized in that the sealing structure comprises a sealing cap, a valve body sealing seat, a plurality of O-shaped rope loops and the butterfly plate sealing surface. The valve body sealing seat is a frustum-shaped floating stainless steel metal seal ring arranged laterally. A flow channel sealing face is formed by the inner ring shoulder portion of the frustum-shaped floating stainless steel metal seal ring and the butterfly plate sealing surface. The O-shaped rope loops with different diameters are arranged on the outer ring concave portion of the frustum-shaped floating stainless steel metal seal ring and sealing between a valve cavity and the frustum-shaped floating stainless steel metal seal ring can be achieved through the sealing cap.
Description
Technical field
The utility model relates to a kind of Fluid Sealing valve, especially a kind of Double-sealing metal hard seal butterfly valve.
Background technique
That hard seal butterfly valve has is simple in structure, good sealing effect, open easily characteristics, and it is a kind of valve type of extensive use in the present industrial pipeline.At present common to traditional butterfly valve generally adopt following two kinds of structures: two eccentric structures and three eccentric structures.
The butterfly valve of traditional two eccentric structures is because the general soft sealing structure that adopts.Although have the characteristics of long service life, the sealing surface antiwear property is relatively poor, is not suitable for the conveying of the fluid that carries particulate matter.
Three traditional eccentric hard sealed flygate structures, sealing configuration is comparatively complicated, adopt valve seat to be fixedly connected with or to be welded on the forward sealing surface with valve body, butterfly plate under the medium effect to the Direction distortion that is conducive to seal, and when reverse pressure-bearing, pressure medium makes butterfly plate to the Direction distortion that is unfavorable for sealing, thus occur the forward favorable sealing property, oppositely sealability relatively poor, have a different-effect that leaks.
The model utility content
The purpose of this utility model: be intended to propose a kind of new metal hard-sealing butterfly valve that can overcome existing hard seal butterfly valve defects.
This Double-sealing metal hard seal ball valve, this Double-sealing metal hard seal ball valve comprises valve body 10, valve rod, butterfly plate 22; Described butterfly plate is arranged on the centre of valve body, consist of driving structure by being located at butterfly plate valve rod up and down, simultaneously be provided with sealing configuration between butterfly plate sealing surface and valve body, it is characterized in that: described sealing configuration is made of sealing gland 24, valve seal seat 23, a plurality of O type fake and butterfly plate sealing surface 28; Described valve seal seat is the unsteady stainless steel metal seal ring 24 of a side, cone table shape, the inner ring shoulder of the unsteady stainless steel metal seal ring of described cone table shape and butterfly plate sealing surface 28 consist of the runner sealing surface, the outer ring recess of the unsteady stainless steel metal seal ring of described cone table shape is provided with a plurality of O type fakes of different-diameter, and the sealing between sealing gland 24 formations and body cavity.
The end of described sealing gland 24 is centripetal slope surface.
Described valve rod is made of the upper valve shaft 1 that is divided into two-section and lower valve shaft 11; Described upper valve shaft 11 lower ends are fixing with butterfly plate 22 by butterfly plate bearing pin 8, and consist of the self-lubricating seal structure by Upper shaft sleeve 6, the Upper shaft sleeve O shape circle 7 that arranges with valve body 10 top inner chambers on the axis body in the middle; Described lower valve shaft 11 places in the valve pocket that is fixed on valve body 10 bottoms, and its upper end is set in the center hole of butterfly plate 22 bottoms simultaneously, is furnished with Lower shaft sleeve 9 between the two.
The sealing surface of described butterfly plate is stainless steel sealing ring, and its outer ring is sphere.
Described valve seal seat is the floating rubber seal ring 24 of a side, cone table shape.
This Double-sealing metal hard seal ball valve according to above technological scheme proposition, unsteady stainless steel metal seal ring by adopting special construction is as sealing seat, allow it consist of double sealing structure with butterfly plate and valve body simultaneously, not only realize two-way effective sealing, and simple in structure, operation easily, and is easy to removal and installation.
Description of drawings
Fig. 1 is overall structure schematic representation of the present utility model;
Fig. 2 is Fig. 1 I section partial enlarged drawing.
Among the figure: the upper valve shaft O type circle 6-Upper shaft sleeve 7-Upper shaft sleeve O type circle 8-butterfly plate bearing pin 9-Lower shaft sleeve 10-valve body 11-lower valve shaft 12-lower valve shaft O type circle 13-bolt 14-screw 15-nut 16-Gland 18-flat key 19-O type circle 20-bearing pin sealing gasket 22-butterfly plate 23-valve seals 24-sealing gland 25-O type fake 26-O type fake 27-O type fake of the upper valve shaft 2-of 1-connecting base 3-bolt 4-check pin 5-.
Embodiment
This Double-sealing metal hard seal ball valve as shown in the figure comprises valve body 10, valve rod, butterfly plate 22; Described butterfly plate is arranged on the centre of valve body, consist of driving structure by being located at butterfly plate valve rod up and down, simultaneously be provided with sealing configuration between butterfly plate sealing surface and valve body, it is characterized in that: described sealing configuration is made of sealing gland 24, valve seal seat 23, O type fake and butterfly plate sealing surface 28; Described valve seal seat is the unsteady stainless steel metal seal ring 24 of a side, cone table shape, the inner ring shoulder of the unsteady stainless steel metal seal ring of described cone table shape and butterfly plate sealing surface 28 consist of the runner sealing surface, the outer ring recess of the unsteady stainless steel metal seal ring of described cone table shape is provided with a plurality of O type fakes of different-diameter, and the sealing between sealing gland 24 formations and body cavity.
The end of described sealing gland 24 is centripetal slope surface.
Described valve rod is made of the upper valve shaft 1 that is divided into two-section and lower valve shaft 11; Described upper valve shaft 11 lower ends are fixing with butterfly plate 22 by butterfly plate bearing pin 8, and consist of the self-lubricating seal structure by Upper shaft sleeve 6, the Upper shaft sleeve O shape circle 7 that arranges with valve body 10 top inner chambers on the axis body in the middle; Described lower valve shaft 11 places in the valve pocket that is fixed on valve body 10 bottoms, and its upper end is set in the center hole of butterfly plate 22 bottoms simultaneously, is furnished with Lower shaft sleeve 9 between the two.
The sealing surface of described butterfly plate is stainless steel sealing ring, and its outer ring is sphere.
In actual use, adopting the valve seal seat is the rubber seal 24 of a side, cone table shape.
In practice, the concrete technical requirements of this product is as follows:
1, valve body, butterfly plate material: valve body, butterfly plate adopt the spheroidal graphite cast iron casting to form, and all foundry goods are of close texture all through ageing treatment, even structure, the casting defects such as flawless, shrinkage cavity, reducing, loose and underpriming; Foundry goods will clean, and shape is correct, and the variation of all shape and size has larger arc transition and the curving of castings.
2, sealing configuration:
(1) the valve seal seat is the stainless steel metal seal ring that floats, adopt the sealing gland of Front-end Design sloping face to be fixed on the valve body, make on the one hand the front end of sealing gland compress the multilayer O type fake that is arranged on the unsteady stainless steel metal seal ring of the side cone table shape outside; Simultaneously, again by the effect of this extruding multilayer O type fake, make the stainless steel metal seal ring inner ring shoulder that floats closely be adjacent to the annular metal sealing surface of butterfly plate.
(2) the butterfly plate sealing surface is stainless steel sealing ring, is processed into sphere, spheric structure make butterfly valve because of wearing and tearing produce the axial-rotation gap in 5 ° of scopes the time sealing pair still keep zero leakage.
(3) adopt two eccentric sealed structures, so that butterfly valve opens and closes easily, reduce the wearing and tearing of sealing surface.
The means of press seals such as (4) butterfly valve is two-way, leak-down rate are zero.
(5) butterfly valve is easy for installation, is not subjected to MEDIA FLOW to affecting restriction in installation, not affected by the spatial position, can install in any direction; Especially in maintenance, lay down the valve seal seat of valve body one side, just can be implemented in the line maintenance; Improve the working life of whole valve more than 6 times.
3, valve board structure:
(1) adopt the bridge type truss structure, intensity height, good rigidly, lightweight, circulation area is large, the valve plate shape is utilized fluid mechanics principle design, makes the medium flow resistance greatly reduce the saving energy.
(2) on the valve plate without any fastening piece, reduce flow resistance and incrustation not.
(3) valve has less moment of torsion, good water conservancy diversion, during valve wide open MEDIA FLOW when valve the flow resistance system between 0.1-0.2.
4, valve shaft structure:
(1) adopts up and down two minor axis structures, and be furnished with self lubrication bearing, open and close stable flexibly.The valve shaft material is stainless steel, and intensity height, good rigidly, wear resistant corrosion resistant are strong.
(2) valve rod adopts the expansion pin structure with being connected of butterfly plate, is furnished with the stainless steel locking nut, guarantees not become flexible under normal operation, and is non-leakage, is convenient to change.
Claims (4)
1. a Double-sealing metal hard seal ball valve comprises valve body (10), valve rod, butterfly plate (22); Described butterfly plate is arranged on the centre of valve body, consist of driving structure by being located at butterfly plate valve rod up and down, simultaneously be provided with sealing configuration between butterfly plate sealing surface and valve body, it is characterized in that: described sealing configuration is made of sealing gland (24), valve seal seat (23), O type fake and butterfly plate sealing surface (28); Described valve seal seat is the unsteady stainless steel metal seal ring (24) of a side, cone table shape, the inner ring shoulder of the unsteady stainless steel metal seal ring of described cone table shape and butterfly plate sealing surface (28) consist of the runner sealing surface, the outer ring recess of the unsteady stainless steel metal seal ring of described cone table shape is provided with a plurality of O type fakes of different-diameter, and the sealing between sealing gland (24) formation and body cavity.
2. Double-sealing metal hard seal ball valve as claimed in claim 1, it is characterized in that: the end of described sealing gland (24) is centripetal slope surface.
3. Double-sealing metal hard seal ball valve as claimed in claim 1 is characterized in that: described valve rod is made of the upper valve shaft (1) that is divided into two-section and lower valve shaft (11); Described upper valve shaft (11) lower end is fixing by butterfly plate bearing pin (8) and butterfly plate (22), and consists of the self-lubricating seal structure by Upper shaft sleeve (6), the Upper shaft sleeve O shape circle (7) that arranges with valve body (10) top inner chamber on the axis body in the middle; Described lower valve shaft (11) places in the valve pocket that is fixed on valve body (10) bottom, and its upper end is set in the center hole of butterfly plate (22) bottom simultaneously, is furnished with Lower shaft sleeve (9) between the two.
4. Double-sealing metal hard seal ball valve as claimed in claim 1, it is characterized in that: the sealing surface of described butterfly plate is stainless steel sealing ring, its outer ring is sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220504235.0U CN202790581U (en) | 2012-09-27 | 2012-09-27 | Double seal metal rigidity seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220504235.0U CN202790581U (en) | 2012-09-27 | 2012-09-27 | Double seal metal rigidity seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790581U true CN202790581U (en) | 2013-03-13 |
Family
ID=47817846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220504235.0U Expired - Fee Related CN202790581U (en) | 2012-09-27 | 2012-09-27 | Double seal metal rigidity seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790581U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294431A (en) * | 2021-12-23 | 2022-04-08 | 欧维克集团有限公司 | Double-flow-direction metal hard sealing butterfly valve |
| CN115962289A (en) * | 2022-11-03 | 2023-04-14 | 宁波一机阀门制造有限公司 | Intelligent bidirectional metal self-pressing sealing butterfly valve with self-generated power and control system thereof |
-
2012
- 2012-09-27 CN CN201220504235.0U patent/CN202790581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294431A (en) * | 2021-12-23 | 2022-04-08 | 欧维克集团有限公司 | Double-flow-direction metal hard sealing butterfly valve |
| CN115962289A (en) * | 2022-11-03 | 2023-04-14 | 宁波一机阀门制造有限公司 | Intelligent bidirectional metal self-pressing sealing butterfly valve with self-generated power and control system thereof |
| CN115962289B (en) * | 2022-11-03 | 2023-12-19 | 宁波一机阀门制造有限公司 | Self-generated power intelligent bidirectional metal self-pressing sealing butterfly valve and control system thereof |
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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: 20130313 Termination date: 20210927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |