CN204985776U - Valve of double -wedge butterfly valve disk seat and reliable seal - Google Patents
Valve of double -wedge butterfly valve disk seat and reliable seal Download PDFInfo
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- CN204985776U CN204985776U CN201520722235.1U CN201520722235U CN204985776U CN 204985776 U CN204985776 U CN 204985776U CN 201520722235 U CN201520722235 U CN 201520722235U CN 204985776 U CN204985776 U CN 204985776U
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- valve seat
- ladder
- wedge
- valve body
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Abstract
The utility model belongs to the valve field that the dominant discharge was used, concretely relates to folding wedge shape butterfly valve disk seat and a sealed reliable valve, sealed reliable valve includes the disk seat, and the disk seat is doughnut -shaped structure, set up in the inboard and valve body cooperation of valve body, it is protruding that the outer periphery middle part of disk seat is equipped with the annular, protruding cross -section appears for the folding wedge, and the symmetry is equipped with the annular groove on two bellied sides, disk seat inner circumference middle part is equipped with the annular groove. The utility model relates to an it is novel to solved the fixed sealed problem of bringing of disk seat among the prior art effectively, avoided the disk seat with the valve body since the machining precision problem lead to the fact do not agree with the phenomenon, promoted valve seal's reliability.
Description
Technical field
The utility model belongs to the valve field controlling flow, is specifically related to a kind of double-wedge butterfly valve seat and the reliable valve of a kind of sealing.
Background technique
Butterfly valve refers to that closure member (butterfly plate or butterfly lobe) is disk, rotates a kind of valve reaching open and close, be also called Flap valve around valve rod.Butterfly valve is the simple modulating valve of a kind of structure, can be used for the switch control rule of low pressure pipeline medium, and on pipeline, main rising is cut off and throttling action.Butterfly valve is applicable to producer, coal gas, rock gas, liquefied petroleum gas (LPG), town gas, air, chemical industry are controlled and to be practiced and in the engineering system such as generation environment-friendly, for carrying the pipeline of various corrosivity, non-corrosive flowing medium, for regulating and block the flowing of medium.
Valve seat is one of major part of butterfly valve, and valve seat is arranged on valve body, and when valve rod drives butterfly plate to rotate, butterfly plate contacts with rubber valve seat, makes valve reach the effect of sealing.Valve seat and valve body or flange junction plane place, due to machining accuracy problem, easily cause the phenomenon of not agreeing with, cause poorly sealed problem.In addition, valve rod passes valve seat by valve rod hole, but easily occurs the phenomenon of seepage in the valve rod hole of the two junction, cause external agency to enter valve cavity, or interior media leaks outside.
In addition, in use, valve seat also there will be the problems referred to above to the valve of other kinds.
Model utility content
In order to solve the problem, the utility model provides a kind of double-wedge butterfly valve seat and the reliable valve of a kind of sealing of good sealing effect.
The utility model adopts following technological scheme:
A kind of double-wedge butterfly valve seat, described valve seat is cirque structure, be arranged on inside valve body and coordinate with valve body, annular protrusion is provided with in the middle part of described valve seat outer peripheral surface, described convex cross section is double-wedge, two protruding sides are arranged with annular groove, in the middle part of described valve seat inner peripheral surface, are provided with annular groove.The projection of double-wedge makes when valve-closed state, and valve seat is wriggled to low voltage side under pressure medium effect, wedging.In addition, annular groove on described protruding two sides coordinates with valve body and forms relative vacuum space, the annular groove arranged in the middle part of valve seat inner peripheral surface coordinates with butterfly plate and forms relative vacuum space, all create to elastic seat and better support and resilience space, ensure that valve base sealing is tight, it is firm to install.
Described valve seat offers the valve rod hole be communicated with up and down, described valve rod hole is shoulder hole, and shoulder hole inwall is provided with multiple ladder be arranged in order, and described ladder comprises V-shaped ladder, V-shaped shape can form two-way self-tightening sealing pair with valve rod, ensures the sealing at valve rod place.
The end face of described valve body and valve seat is by Flange joint pipeline, wherein flange facing stress deformation easily extrudes valve seat end face, cause valve seat and butterfly plate sealing pair poorly sealed, therefore, valve seat end face is set to stepped, and valve seat end face comprises the first ladder surface, second-order tread, described first ladder surface is near valve body, second-order tread is lower than the first ladder surface, and second-order tread is connected with the first ladder surface rounding off, and second-order tread tilts to the inside.Certain gap is had, the valve seat that both effectively prevent, junction flange seal facial disfigurement causes and the phenomenon of butterfly plate sealing effect difference between the second-order tread of valve seat end face and flange facing.
Described valve seat outer peripheral surface forms T-shaped groove-like connecting part, ensures to be combined firmly with valve body.
The reliable valve of a kind of sealing, comprise valve seat, described valve seat is arranged on inside valve body and coordinates with valve body, projection is provided with in the middle part of described valve seat outer side surface, described convex cross section is double-wedge, two protruding sides is arranged with groove, is provided with groove in the middle part of described valve seat inner side surface.
Described valve seat offers valve rod hole, and valve rod hole is shoulder hole, and described shoulder hole inwall is provided with multiple ladder be arranged in order, and described ladder comprises V-shaped ladder.
Described valve seat end face is set to stepped, valve seat end face comprises the first ladder surface, second-order tread, and described first ladder surface is near valve body, and second-order tread is lower than the first ladder surface, second-order tread is connected with the first ladder surface rounding off, and second-order tread tilts to the inside.
Described valve seat outer surface forms T-shaped groove-like connecting part, is combined with valve body.
The reliable valve of described sealing can be set to the valve of butterfly valve or other types.
Advantage of the present utility model and beneficial effect are:
1, the utility model adopts the projection of double-wedge, and valve seat both sides all arrange the sealing configuration of groove, novel in design, valve seat has sufficient resilience space, and efficiently solve the sealing problem that valve seat in prior art fixedly brings, what avoid that valve seat and valve body cause due to machining accuracy problem does not agree with phenomenon, improves the degree of reliability of valve seal, improves the stability of valve operation torsion;
V-shaped hole design in the valve rod hole of 2, the utility model valve seat, make when mounted, it is secondary that V-shaped hole and valve rod form two-way self-tightening sealing, ensure that positive piezodielectric does not leak outside, during negative pressure, external fluid does not enter valve cavity, the favourable medium purity that ensure that in valve pipe;
3, the utility model end face is set to step structure, flange facing distortion can be eliminated on the impact of valve seat and butterfly plate sealing pair sealing effect, and eliminate the change that valve seat is out of shape the torsion that may cause, avoid the fluctuation of torque magnitude, improve the stability of valve operation, in automatically controlled or automatic operation valve, there is clear superiority especially;
4, the utility model structure is convenient to dismounting, reduces the difficulty that maintenance of valve is safeguarded;
5, adopt the valve of the utility model valve seat construction, improve the stability of the overall sealing degree of reliability of valve and operation, especially in automation control area, overall cost can be reduced, and improve stability and the life-span of overall operation.
Accompanying drawing explanation
The structural representation of Fig. 1 to be the utility model be butterfly valve;
Fig. 2 is the cross section structure figure of valve body, valve seat and butterfly plate;
Fig. 3 is the cross section structure figure of valve seat and valve rod hole.
Wherein, 1-valve body, 2-valve seat, 3-butterfly plate, 4-valve rod, 5-is protruding, 6-groove, 7-first ladder surface, 8-second-order tread, 9-valve rod hole, 10-V font ladder.
Embodiment
As shown in Figure 1 to Figure 3, the reliable valve of a kind of sealing, is butterfly valve structure, comprises butterfly valve seat, valve seat 2 is made for rubber, described valve seat 2 is cirque structure, to be arranged on inside valve body 1 and to coordinate with valve body 1, being provided with butterfly plate 3 inside valve seat 2, butterfly plate 3 is shutter member, the valve rod 4 that rotates through of butterfly plate 3 controls, and valve seat 2 offers the valve rod hole 9 be communicated with up and down, and valve rod 4 is through valve rod hole 9.Described valve rod hole 9 is shoulder hole, and described shoulder hole inwall is provided with multiple ladder be arranged in order, and multiple ladder comprises two V-shaped ladders 10.
Described valve seat 2 end face comprises the first ladder surface 7, second-order tread 8, and described first ladder surface 7 is near valve body 1, and second-order tread 8 is lower than the first ladder surface 7, and second-order tread 8 is connected with the first ladder surface 7 rounding off, and second-order tread 8 tilts to the inside.
Described valve seat 2 outer peripheral surface forms T-shaped groove-like connecting part, and valve seat 2 two ends are fastened on valve body 1, firmly install with valve body 1.Be provided with annular protrusion 5 in the middle part of valve seat 2 outer peripheral surface, described annular protrusion 5 cross section is double-wedge, two sides of protruding 5 is arranged with the groove 6 of annular, is provided with annular groove 6 in the middle part of described valve seat inner peripheral surface.
Claims (9)
1. a double-wedge butterfly valve seat, described valve seat is cirque structure, be arranged on inside valve body and coordinate with valve body, it is characterized in that, annular protrusion is provided with in the middle part of described valve seat outer peripheral surface, described convex cross section is double-wedge, two protruding sides is arranged with annular groove, is provided with annular groove in the middle part of described valve seat inner peripheral surface.
2. double-wedge butterfly valve seat according to claim 1, is characterized in that, described valve seat offers the valve rod hole be communicated with up and down, and described valve rod hole is shoulder hole, and shoulder hole inwall is provided with multiple ladder be arranged in order, and described ladder comprises V-shaped ladder.
3. double-wedge butterfly valve seat according to claim 1 and 2, it is characterized in that, described valve seat end face is set to stepped, valve seat end face comprises the first ladder surface, second-order tread, described first ladder surface is near valve body, second-order tread is lower than the first ladder surface, and second-order tread is connected with the first ladder surface rounding off, and second-order tread tilts to the inside.
4. double-wedge butterfly valve seat according to claim 3, is characterized in that, described valve seat outer peripheral surface forms T-shaped groove-like connecting part, is combined with valve body.
5. seal a reliable valve, comprise valve seat, described valve seat is arranged on inside valve body and coordinates with valve body, it is characterized in that, be provided with projection in the middle part of described valve seat outer side surface, described convex cross section is double-wedge, two protruding sides are arranged with groove, in the middle part of described valve seat inner side surface, are provided with groove.
6. the reliable valve of sealing according to claim 5, is characterized in that, described valve seat offers valve rod hole, and valve rod hole is shoulder hole, and described shoulder hole inwall is provided with multiple ladder be arranged in order, and described ladder comprises V-shaped ladder.
7. the reliable valve of the sealing according to claim 5 or 6, it is characterized in that, described valve seat end face is set to stepped, valve seat end face comprises the first ladder surface, second-order tread, described first ladder surface is near valve body, second-order tread is lower than the first ladder surface, and second-order tread is connected with the first ladder surface rounding off, and second-order tread tilts to the inside.
8. the reliable valve of sealing according to claim 7, is characterized in that, described valve seat outer surface forms T-shaped groove-like connecting part, is combined with valve body.
9. the reliable valve of sealing according to claim 5,6 or 8, is characterized in that, the reliable valve of described sealing is butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722235.1U CN204985776U (en) | 2015-09-17 | 2015-09-17 | Valve of double -wedge butterfly valve disk seat and reliable seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722235.1U CN204985776U (en) | 2015-09-17 | 2015-09-17 | Valve of double -wedge butterfly valve disk seat and reliable seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985776U true CN204985776U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520722235.1U Active CN204985776U (en) | 2015-09-17 | 2015-09-17 | Valve of double -wedge butterfly valve disk seat and reliable seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561571A (en) * | 2018-06-26 | 2018-09-21 | 宁津美华工业有限公司 | A kind of butterfly valve seat |
| CN113074260A (en) * | 2021-03-23 | 2021-07-06 | 无锡美瑞克阀门制造有限公司 | Novel butterfly valve disk seat of high-efficient sealing |
-
2015
- 2015-09-17 CN CN201520722235.1U patent/CN204985776U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561571A (en) * | 2018-06-26 | 2018-09-21 | 宁津美华工业有限公司 | A kind of butterfly valve seat |
| CN113074260A (en) * | 2021-03-23 | 2021-07-06 | 无锡美瑞克阀门制造有限公司 | Novel butterfly valve disk seat of high-efficient sealing |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |