CN203374830U - Automatic compensation butterfly valve - Google Patents
Automatic compensation butterfly valve Download PDFInfo
- Publication number
- CN203374830U CN203374830U CN201320428322.7U CN201320428322U CN203374830U CN 203374830 U CN203374830 U CN 203374830U CN 201320428322 U CN201320428322 U CN 201320428322U CN 203374830 U CN203374830 U CN 203374830U
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- China
- Prior art keywords
- valve
- valve seat
- valve body
- butterfly
- screw
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- Expired - Lifetime
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Abstract
The utility model relates to an automatic compensation butterfly valve which comprises a valve body, a valve rod, a butterfly plate and a valve seat sealing ring. A horizontal medium channel is formed in the valve body, the valve rod is longitudinally arranged in the valve body, and the butterfly plate driven by the valve rod to rotate is fixedly arranged on one side of the valve rod in the valve body. The valve seat sealing ring is coaxially arranged on the inner wall of the medium channel of the valve body where the butterfly plate is located. The valve seat sealing ring and the butterfly plate are sealed in a friction mode. The valve seat sealing ring is arranged on the valve body through an elastic compensation device. A fixing seat is fixedly arranged on the inner wall of the valve body located on one side of the valve seat sealing ring, and the fixing seat and the valve seat sealing ring are arranged at intervals in the horizontal direction. The fixing seat is horizontally provided with a screw, the screw is arranged on the fixing seat through a nut in a guiding adjustment mode, the screw horizontally butts against a spring seat which horizontal butts against a press ring, and the press ring horizontally butts against the valve seat sealing ring. The automatic compensation butterfly valve is simple in structure, scientific in design, reliable in sealing performance, long in valve service life, and small in start torque, and can be widely applied to various occasions.
Description
Technical field
The utility model belongs to the butterfly valve field, especially a kind of auto-compensation butterfly valve.
Background technique
Butterfly valve is divided into flexible sealing type and hard two kinds of structures of sealed type, wherein the hard seal butterfly valve sealing surface be stainless steel to stainless steel, itself has fire-proof function, is applicable to the high-pressure large-caliber occasion, but its production process complexity, the assembling difficulty, manufacture cost is high; Although and that the soft sealing butterfly valve structure has is simple in structure, easily manufactured, with low cost, the characteristics of reliable operation, but have following defect: 1, when working pressure when 5.0MPa is above, do not reach high pressure sealing by valve seat initial compression amount, or opening moment of torsion while reaching high pressure sealing increases, increase the destroyed possibility of valve rod.2, after using for a long time and depositing, cold deformation appears in the valve seat of fluoroplastic or rubber, flexibility decrease, and opening moment of torsion increases, and valve can not seal; 3, soft sealing butterfly valve does not possess fire-proof function, can't the adaptation condition requirement.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of auto-compensation butterfly valve is provided, and this butterfly valve structure is simple, reasonable in design, sealability reliable, long service life, and has fireproof performance.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of auto-compensation butterfly valve, comprise valve body, valve rod, butterfly plate and valve seat insert, be shaped with horizontal medium channel in valve body, valve rod vertically is arranged in valve body, valve rod one side in valve body is fixed with one and drives by valve rod the butterfly plate rotated, medium channel inwall at the valve body that butterfly plate one side is installed is coaxially installed with a valve seat insert, this valve seat insert and butterfly plate are friction sealed, it is characterized in that: described valve seat insert is arranged on valve body by an elastic compensating device, this elastic compensating device comprises fixed base, screw, nut, spring seat, pressure ring and preloading spring, be fixed with fixed base with the valve seat insert lateral separation on the valve interior wall of valve seat insert one side, fixed base is horizontally installed with a screw, this screw leads to regulate by nut and is arranged on fixed base, screw laterally pushes up presses a spring seat, spring seat laterally pushes up presses a pressure ring, the horizontal top of this pressure ring pressure valve seat seal ring.
And the spring seat that described pressure ring contacts a side laterally is shaped with a spring groove, and is pressed with a preloading spring in this spring groove.
And the surface of contact of described pressure ring and valve seat insert is shaped with the sealing projection of wedge shape, the sealing projection of this pressure ring replaces position and the butterfly plate press seal of valve seat insert.
And described screw, nut and preloading spring radially are evenly equipped with a plurality of in medium channel.
Advantage of the present utility model and good effect are:
1, this butterfly valve is pressed with spring in spring seat, greatly increased the elasticity of valve seat insert, guaranteed that valve has a stable initial sealing pressure all the time, also compensated simultaneously valve use for a long time and deposit after the cold deformation that occurs of fluoroplastic valve seat insert or rubber valve seat seal ring, guarantee the sealing of valve, increase working life, guaranteed the sealing force of valve seat insert when bearing high pressure sealing.
2, this butterfly valve, by the elastic compensating of spring, has reduced the unlatching moment of valve, and when the pipeline breaking out of fire, once soft seal valve seat seal ring is burnt, spring force promotion pressure ring by spring contacts with butterfly plate, form the secondary metals sealing, so this butterfly valve has fire-proof function.
3, the utility model is simple in structure, design science, and sealability is reliable, and life of valve is long, opens moment of torsion little, is widely used in various occasions.
The accompanying drawing explanation
Fig. 1 is structural front view of the present utility model;
Fig. 2 is the local structure for amplifying schematic diagram of A section in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of auto-compensation butterfly valve, comprise valve body 1, valve rod 3, butterfly plate 2 and valve seat insert 4, be shaped with as shown in Figure 1 horizontal medium channel in valve body, in accompanying drawing arrow be depicted as MEDIA FLOW to, valve rod vertically is arranged in valve body, valve rod one side in valve body is fixed with one and drives by valve rod the butterfly plate rotated, by sealing, the unlatching of the medium channel in rotation butterfly plate control valve body; Medium channel inwall at the valve body that butterfly plate one side is installed is coaxially installed with a valve seat insert, and this valve seat insert and butterfly plate are friction sealed, and the material of valve seat insert is fluoroplastic or rubber.
Innovative point of the present utility model is:
Described valve seat insert is arranged on valve body by an elastic compensating device, this elastic compensating device comprises fixed base 10, screw 9, nut 8, spring seat 7, pressure ring 5 and preloading spring 6, be fixed with fixed base with the valve seat insert lateral separation on the valve interior wall of valve seat insert one side, fixed base is horizontally installed with a screw, this screw leads to regulate by nut and is arranged on fixed base, screw laterally pushes up presses a spring seat, spring seat laterally pushes up presses a pressure ring, the horizontal top of this pressure ring pressure valve seat seal ring, rotary screw can the coaxial transverse shifting of adjusting screw, thereby the horizontal compression degree of regulating valve seat.
The spring seat that contacts a side with pressure ring laterally is shaped with a spring groove, and is pressed with a preloading spring in this spring groove, can compensate wearing and tearing and the distortion of valve seat insert, keeps the sealing load of valve seat insert and butterfly plate.
The surface of contact of described pressure ring and valve seat insert is shaped with the sealing projection of wedge shape, when valve seat insert high temperature burns, preloading spring laterally promotes pressure ring, the sealing projection of this pressure ring replaces position and the butterfly plate press seal of valve seat insert, thereby form the secondary metals sealing, play fireproofing function, the lift-off seal reliability, guarantee valve safety.
Even for the lateral pressure that guarantees elastic compensating device, described screw, nut and preloading spring radially are evenly equipped with a plurality of in medium channel.
Claims (4)
1. an auto-compensation butterfly valve, comprise valve body, valve rod, butterfly plate and valve seat insert, be shaped with horizontal medium channel in valve body, valve rod vertically is arranged in valve body, valve rod one side in valve body is fixed with one and drives by valve rod the butterfly plate rotated, medium channel inwall at the valve body that butterfly plate one side is installed is coaxially installed with a valve seat insert, this valve seat insert and butterfly plate are friction sealed, it is characterized in that: described valve seat insert is arranged on valve body by an elastic compensating device, this elastic compensating device comprises fixed base, screw, nut, spring seat, pressure ring and preloading spring, be fixed with fixed base with the valve seat insert lateral separation on the valve interior wall of valve seat insert one side, fixed base is horizontally installed with a screw, this screw leads to regulate by nut and is arranged on fixed base, screw laterally pushes up presses a spring seat, spring seat laterally pushes up presses a pressure ring, the horizontal top of this pressure ring pressure valve seat seal ring.
2. auto-compensation butterfly valve according to claim 1, it is characterized in that: the spring seat that described pressure ring contacts a side laterally is shaped with a spring groove, and is pressed with a preloading spring in this spring groove.
3. auto-compensation butterfly valve according to claim 1, it is characterized in that: the surface of contact of described pressure ring and valve seat insert is shaped with the sealing projection of wedge shape, and the sealing projection of this pressure ring replaces position and the butterfly plate press seal of valve seat insert.
4. auto-compensation butterfly valve according to claim 1, it is characterized in that: described screw, nut and preloading spring radially are evenly equipped with a plurality of in medium channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428322.7U CN203374830U (en) | 2013-07-15 | 2013-07-15 | Automatic compensation butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428322.7U CN203374830U (en) | 2013-07-15 | 2013-07-15 | Automatic compensation butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374830U true CN203374830U (en) | 2014-01-01 |
Family
ID=49837359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320428322.7U Expired - Lifetime CN203374830U (en) | 2013-07-15 | 2013-07-15 | Automatic compensation butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335121A (en) * | 2013-07-15 | 2013-10-02 | 天津百利展发集团有限公司 | Automatic compensation butterfly valve |
| CN108547956A (en) * | 2018-05-28 | 2018-09-18 | 开封瑞科阀门有限公司 | A kind of self sealss movement butterfly plate low temperature butterfly valve |
-
2013
- 2013-07-15 CN CN201320428322.7U patent/CN203374830U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335121A (en) * | 2013-07-15 | 2013-10-02 | 天津百利展发集团有限公司 | Automatic compensation butterfly valve |
| CN108547956A (en) * | 2018-05-28 | 2018-09-18 | 开封瑞科阀门有限公司 | A kind of self sealss movement butterfly plate low temperature butterfly valve |
| CN108547956B (en) * | 2018-05-28 | 2023-11-21 | 开封瑞科阀门有限公司 | Self-sealing movable butterfly plate low-temperature butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |