CN205278401U - High temperature resistant triple offset butterfly valve - Google Patents
High temperature resistant triple offset butterfly valve Download PDFInfo
- Publication number
- CN205278401U CN205278401U CN201521119982.2U CN201521119982U CN205278401U CN 205278401 U CN205278401 U CN 205278401U CN 201521119982 U CN201521119982 U CN 201521119982U CN 205278401 U CN205278401 U CN 205278401U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- bearing
- high temperature
- temperature resistant
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a high temperature resistant triple offset butterfly valve, including valve rod, valve plate and valve body, the upper bearing of valve rod through upper and lower setting, down the bearing support respectively in valve body upper portion, lower part, valve body upper portion is equipped with shaft seal structure with valve rod combination department, shaft seal structure is including pressing cover, carbon packing, clamping ring, press cover top -down suit on the valve rod, seal carbon packing in the annular of the valve body upper portion on upper bearing upper portion and valve rod combination department, the clamping ring is installed and is being pressed the cover up end to with valve rod fixed connection, the further improvement lies in: the terminal surface of pressing cover and carbon packing to contact is the circular conical surface, and the main aspects of this circular conical surface are under, valve rod, valve plate pass through spline struvture and connect, upper bearing, lower bearing are composite sliding bearing. The utility model discloses high temperature resistant, it is little that the during operation closes the moment of torsion, and the valve body atress is even, sealed reliable, non -maintaining.
Description
Technical field
This utility model relates to a kind of valve, particularly a kind of double eccentric butterfly valve.
Background technology
The butterfly valve of prior art, is provided with shaft seal structure in the upper end of valve body, valve rod. The shaft seal structure of prior art is be provided with radial shaft seal structure between the upper and lower part and valve rod of valve body, is embedded in O-ring seals and coordinates with valve stem seal and form more than this radial shaft seal structure, in lower concave annular groove. This structure can stop the liquid spill passed through in butterfly valve effectively, but there is obvious defect: owing to O-ring seals is generally rubber ring, resistance to elevated temperatures is poor so that the butterfly valve resistance to elevated temperatures of prior art is poor; On the other hand, existing butterfly valve plate, valve rod are bearing on the end cap of valve body lower portion, owing to end cap is fixedly connected on valve body lower portion, therefore, valve plate, valve rod most of weight act on valve body lower portion, make valve body discontinuity, affect the sealing of butterfly valve and normal use.
Summary of the invention
This utility model is for the deficiencies in the prior art, it is proposed to one can significantly improve resistance to elevated temperatures, and can make the high temperature resistant three-eccentric-butterfly-valve of valve body uniform force.
This utility model is achieved through the following technical solutions technical goal.
High temperature resistant three-eccentric-butterfly-valve, including valve rod, valve plate and valve body; Described valve rod is bearing in valve body top, bottom respectively by upper bearing (metal) setting up and down, lower bearing; Described valve body top and valve rod junction are provided with shaft seal structure; It thes improvement is that: described shaft seal structure includes gland, graphite packing, pressure ring; Described gland is sleeved on valve rod from top to bottom, graphite packing is enclosed in the valve body top on upper bearing (metal) top and the annular groove of valve rod junction; Described pressure ring is arranged on gland upper surface, and fixing with valve rod is connected.
In said structure, the end face that described gland contacts with graphite packing is taper seat, the big end of this taper seat under.
In said structure, described valve rod, valve plate are connected by spline structure.
In said structure, described upper bearing (metal), lower bearing are composite sliding bearing, formed by external bushing, neck bush fit, external bushing is made up of carbon steel, steel alloy or cast iron, neck bush is made up of rub resistance, alloy material high temperature resistant, low-friction coefficient, and neck bush outer wall is provided with in annular protrusion embedding external bushing internal circular-grooves and closely cooperates.
This utility model compared with prior art, has the positive effect that:
1, all adopting graphite packing to seal in valve body top and valve rod junction shaft seal structure, graphite packing is high temperature resistant, therefore, significantly improves resistance to elevated temperatures of the present utility model.
2, under valve plate, valve rod Gravitative Loads, pressure ring compressing gland, make graphite packing tight seal all the time in shaft seal structure, remain sealing reliability, can be practical non-maintaining.
3, the end face that gland contacts with graphite packing is taper seat, the big end of this taper seat under, so axially and radially extruded at valve plate, valve rod Gravitative Loads lower seal filler so that valve rod outer wall is tightly embraced in airtight and watertight padding, improves sealing reliability further simultaneously.
4, valve plate, valve rod deadweight part pass through pressure ring, it is delivered to valve body top through gland, airtight and watertight padding, upper bearing (metal), so, shares the deadweight of part valve plate, valve rod, solve prior art and only born the problem of valve body discontinuity by valve body lower portion, make valve body uniform force.
5, valve rod, valve plate are connected by spline structure, and spline connects can eliminate assembly building to greatest extent
Gap, makes valve plate operating position accurate, it is ensured that seal stability.
6, upper bearing (metal), lower bearing are composite sliding bearing, and neck bush is made up of rub resistance, alloy material high temperature resistant, low-friction coefficient, and the bearing of this structure is wear-resisting, resistance to elevated temperatures is good, reducing the clamping stagnation at bearing place, during work, this utility model open and close torque is less.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is I enlarged schematic partial view in Fig. 1.
Detailed description of the invention
Below according to accompanying drawing and the utility model is described in further detail in conjunction with the embodiments.
High temperature resistant three-eccentric-butterfly-valve shown in the drawings, including valve rod 1, valve plate 2 and valve body 3, valve rod 1, valve plate 2 are connected by spline structure. Valve rod 1 is bearing in valve body 3 top, bottom respectively by upper bearing (metal) 4 setting up and down, lower bearing 5. Upper bearing (metal) 4, lower bearing 5 are composite sliding bearing, formed by external bushing, neck bush fit, external bushing is made up of carbon steel, steel alloy or cast iron, neck bush is made up of rub resistance, alloy material high temperature resistant, low-friction coefficient, and neck bush outer wall is provided with in annular protrusion embedding external bushing internal circular-grooves and closely cooperates.
Valve body 3 top and valve rod 1 junction are provided with shaft seal structure 6; Shaft seal structure 6 includes gland 6.1, graphite packing 6.2, pressure ring 6.3; Gland 6.1 is sleeved on valve rod 1 from top to bottom, graphite packing 6.2 is enclosed in valve body 3 top on upper bearing (metal) 4 top and the annular groove of valve rod 1 junction, and the end face that gland 6.1 contacts with graphite packing 6.2 is taper seat, the big end of this taper seat under; Pressure ring 6.3 is arranged on gland 6.1 upper surface, and fixing with valve rod 1 is connected.
Claims (5)
1. a high temperature resistant three-eccentric-butterfly-valve, including valve rod (1), valve plate (2) and valve body (3); Described valve rod (1) is bearing in valve body (3) top, bottom respectively by upper bearing (metal) (4) setting up and down, lower bearing (5); Described valve body (3) top and valve rod (1) junction are provided with shaft seal structure (6); It is characterized in that: described shaft seal structure (6) includes gland (6.1), graphite packing (6.2), pressure ring (6.3); Described gland (6.1) is sleeved on valve rod (1) from top to bottom, graphite packing (6.2) is enclosed in valve body (3) top on upper bearing (metal) (4) top and the annular groove of valve rod (1) junction; Described pressure ring (6.3) is arranged on gland (6.1) upper surface, and fixing with valve rod (1) is connected.
2. high temperature resistant three-eccentric-butterfly-valve according to claim 1, it is characterised in that: the end face that described gland (6.1) contacts with graphite packing (6.2) is taper seat, the big end of this taper seat under.
3. high temperature resistant three-eccentric-butterfly-valve according to claim 1 and 2, it is characterised in that: described valve rod (1), valve plate (2) are connected by spline structure.
4. high temperature resistant three-eccentric-butterfly-valve according to claim 1 and 2, it is characterized in that: described upper bearing (metal) (4), lower bearing (5) are composite sliding bearing, formed by external bushing, neck bush fit, external bushing is made up of carbon steel, steel alloy or cast iron, neck bush is made up of rub resistance, alloy material high temperature resistant, low-friction coefficient, and neck bush outer wall is provided with in annular protrusion embedding external bushing internal circular-grooves and closely cooperates.
5. high temperature resistant three-eccentric-butterfly-valve according to claim 3, it is characterized in that: described upper bearing (metal) (4), lower bearing (5) are composite sliding bearing, formed by external bushing, neck bush fit, external bushing is made up of carbon steel, steel alloy or cast iron, neck bush is made up of rub resistance, alloy material high temperature resistant, low-friction coefficient, and neck bush outer wall is provided with in annular protrusion embedding external bushing internal circular-grooves and closely cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521119982.2U CN205278401U (en) | 2015-12-30 | 2015-12-30 | High temperature resistant triple offset butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521119982.2U CN205278401U (en) | 2015-12-30 | 2015-12-30 | High temperature resistant triple offset butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205278401U true CN205278401U (en) | 2016-06-01 |
Family
ID=56062979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521119982.2U Expired - Fee Related CN205278401U (en) | 2015-12-30 | 2015-12-30 | High temperature resistant triple offset butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205278401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931172A (en) * | 2015-12-30 | 2017-07-07 | 江苏中昊船用阀门制造有限公司 | High temperature resistant three-eccentric-butterfly-valve |
-
2015
- 2015-12-30 CN CN201521119982.2U patent/CN205278401U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931172A (en) * | 2015-12-30 | 2017-07-07 | 江苏中昊船用阀门制造有限公司 | High temperature resistant three-eccentric-butterfly-valve |
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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: 20160601 Termination date: 20181230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |