CN103511729A - Center line butterfly valve with annular groove valve rod - Google Patents
Center line butterfly valve with annular groove valve rod Download PDFInfo
- Publication number
- CN103511729A CN103511729A CN201310332774.XA CN201310332774A CN103511729A CN 103511729 A CN103511729 A CN 103511729A CN 201310332774 A CN201310332774 A CN 201310332774A CN 103511729 A CN103511729 A CN 103511729A
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- CN
- China
- Prior art keywords
- valve
- valve rod
- annular groove
- valve body
- rod
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- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2268—Sealing means for the axis of rotation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a center line butterfly valve with an annular groove valve rod. The center line butterfly valve comprises a handle, a fluted disc, the valve rod, a valve body, a valve base and a valve clack, wherein the handle is fixed to one end of the valve rod, the other end of the valve rod penetrates into a shaft hole of the valve body, the fluted disc is arranged between the handle and the valve body, the valve base is fixedly connected with the lower portion of the valve body, the valve clack is fixed to the valve rod, annular grooves are formed in the portion, located in the upper portion of the valve body, of the valve rod, and a seal ring is fixed in each annular groove. The multiple annular grooves are formed and respectively provided with the seal ring. According to the center line butterfly valve with the annular groove valve rod, the seal rings are arranged in the annular grooves in the valve rod, and therefore seal performance of the shaft hole of the valve body is greatly improved.
Description
Technical field
The invention belongs to valve technology field, relate in particular to a kind of centre-pivoted butterfly valve with annular groove valve rod.
Background technique
Centre-pivoted butterfly valve is a kind of parts that are used for realizing pipe-line system break-make and flow control, in many fields such as oil, chemical industry, metallurgy, water power, obtains applying very widely.The structure characteristic of centre-pivoted butterfly valve is that valve rod axle center, butterfly plate center, body center are on same position.Simple in structure, easily manufactured.Common butterfly valve belongs to this type of.Shortcoming be due to butterfly plate and valve seat all the time in extruding, scraping state, resistance apart from large, quick abrasion.For overcoming extruding, scraping, guaranteeing that sealability, valve seat adopt rubber or teflon elastomeric material substantially.
The valve body axis hole of centre-pivoted butterfly valve is the significant points of sealing, if seal badly, the serious phenomenon of leakage can occur.
Summary of the invention
The object of this invention is to provide a kind of centre-pivoted butterfly valve with annular groove valve rod, to solve the above-mentioned defect existing in prior art.
For realizing object of the present invention, the invention provides a kind of centre-pivoted butterfly valve with annular groove valve rod, comprise handle, fluted disc, valve rod, valve body, valve seat, flap, one end of described valve rod is fixed with handle, the other end penetrates in the axis hole of described valve body, between described handle and described valve body, be provided with fluted disc, described valve seat divides and is fixedly connected with valve body lower portion, described flap is fixed on described valve rod, described valve rod is positioned at the part on described valve body top, be provided with annular groove, described annular groove is fixed with seal ring.
Wherein, described annular groove has a plurality of, is respectively equipped with seal ring.
The invention provides a kind of centre-pivoted butterfly valve of stem ring connected in star, by seal ring being set in the annular groove of valve rod, greatly improved the sealability of valve body axis hole.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of valve rod of the present invention;
Fig. 3 is the structural representation of seal ring of the present invention;
In figure, 1-handle, 2-fluted disc, 3-valve rod, 4-valve body, 5-valve seat, 6-flap, 7-annular groove, 8-sealing gasket.
Embodiment
In order to make object of the present invention, technological scheme and beneficial effect clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be understood to specific embodiment described herein only in order to explain the present invention, be not limited to protection scope of the present invention.
For realizing object of the present invention, the invention provides a kind of centre-pivoted butterfly valve with annular groove valve rod, comprise handle, fluted disc, valve rod, valve body, valve seat, flap, one end of described valve rod is fixed with handle, the other end penetrates in the axis hole of described valve body, between described handle and described valve body, be provided with fluted disc, described valve seat divides and is fixedly connected with valve body lower portion, described flap is fixed on described valve rod, described valve rod is positioned at the part on described valve body top, be provided with annular groove, described annular groove is fixed with seal ring.
Wherein, described annular groove has a plurality of, is respectively equipped with seal ring.
The invention provides a kind of centre-pivoted butterfly valve of stem ring connected in star, by seal ring being set in the annular groove of valve rod, greatly improved the sealability of valve body axis hole.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention, in valve rod, adds a seal ring, and the internal diameter of seal ring is less than or equal to the external diameter of annular groove, like this can be so that valve rod and described seal ring be closely socketed, and sealing effect is better.
The shape of seal ring can be V-type, and its split shed, laterally towards the wall of valve body axis hole, prevents from improving sealing effect like this.
In preferred implementation, in order to strengthen sealing effect, also a plurality of above-mentioned sealing gaskets can be set in axis hole.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. the centre-pivoted butterfly valve with annular groove valve rod, it is characterized in that, comprise handle, fluted disc, valve rod, valve body, valve seat, flap, one end of described valve rod is fixed with handle, and the other end penetrates in the axis hole of described valve body, between described handle and described valve body, be provided with fluted disc, described valve seat divides and is fixedly connected with valve body lower portion, and described flap is fixed on described valve rod, and described valve rod is positioned at the part on described valve body top, be provided with annular groove, described annular groove is fixed with seal ring.
2. the centre-pivoted butterfly valve with annular groove valve rod according to claim 1, is characterized in that, described groove has a plurality of, is respectively equipped with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332774.XA CN103511729A (en) | 2013-07-31 | 2013-07-31 | Center line butterfly valve with annular groove valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332774.XA CN103511729A (en) | 2013-07-31 | 2013-07-31 | Center line butterfly valve with annular groove valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103511729A true CN103511729A (en) | 2014-01-15 |
Family
ID=49894914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310332774.XA Pending CN103511729A (en) | 2013-07-31 | 2013-07-31 | Center line butterfly valve with annular groove valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511729A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2526200B (en) * | 2014-04-16 | 2017-11-29 | Gt Emissions Systems Ltd | Valve block seal arrangement |
| CN110259961A (en) * | 2018-03-12 | 2019-09-20 | 中核苏阀科技实业股份有限公司 | A kind of three eccentricity hard seal butterfly valve all-metal V-arrangement elastic sealing structure |
-
2013
- 2013-07-31 CN CN201310332774.XA patent/CN103511729A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2526200B (en) * | 2014-04-16 | 2017-11-29 | Gt Emissions Systems Ltd | Valve block seal arrangement |
| GB2550776A (en) * | 2014-04-16 | 2017-11-29 | Gt Emissions Systems Ltd | Valve block seal arrangement |
| GB2550776B (en) * | 2014-04-16 | 2018-05-16 | Gt Emissions Systems Ltd | Butterfly valve |
| CN110259961A (en) * | 2018-03-12 | 2019-09-20 | 中核苏阀科技实业股份有限公司 | A kind of three eccentricity hard seal butterfly valve all-metal V-arrangement elastic sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |
|
| WD01 | Invention patent application deemed withdrawn after publication |