CN101943269A - Eccentric butterfly valve - Google Patents
Eccentric butterfly valve Download PDFInfo
- Publication number
- CN101943269A CN101943269A CN2009100546202A CN200910054620A CN101943269A CN 101943269 A CN101943269 A CN 101943269A CN 2009100546202 A CN2009100546202 A CN 2009100546202A CN 200910054620 A CN200910054620 A CN 200910054620A CN 101943269 A CN101943269 A CN 101943269A
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- China
- Prior art keywords
- valve
- valve seat
- butterfly
- valve body
- eccentric
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Abstract
The invention provides an eccentric butterfly valve. The eccentric butterfly valve comprises a valve body, an upper valve rod, a lower valve rod, a butterfly plate, a valve seat and a valve seat pressing plate, wherein a rolling bearing is arranged between the upper and lower valve rods and the valve body; the butterfly plate is fixedly connected with the upper and lower valve rods through taper pins; the valve seat pressing plate is connected with a positioning step of the valve body through a bolt; a sealing gasket is arranged between the valve seat pressing plate and the valve body; the valve seat is arranged between the positioning step of the valve body and the valve seat pressing plate; the bottom of the valve seat is in contact connection with the butterfly plate; and the valve seat is a U-shaped metal elastic valve seat. The valve seat has self-compensation effect; and the butterfly plate is bidirectionally switchable, has small opening/closing torque and is safe and convenient to use.
Description
Technical field
The present invention relates to a kind of butterfly valve, especially a kind of eccentric-butterfly-valve structure.
Background technique
Eccentric-butterfly-valve is applied to industries such as oil, chemical industry, electric power.The eccentric-butterfly-valve of prior art is made up of valve body parts, actuator, positioning work piece etc.
Valve seat in the prior art butterfly valve is located by valve body, and the sealing between valve seat and the butterfly plate realizes by compressing of pipeline, is difficult to compensation behind the valve base sealing surface wear.The butterfly valve of prior art, owing to reach sealing effect by compressing, difficulty appears opening in actual using process meeting, the situation that moment of torsion is excessive, and behind the valve base sealing surface wear, can produce leakage, cause situations such as the butterfly valve lost of life.In addition, the prior art eccentric-butterfly-valve, the incorporate structural design of valve seat and valve body, needing has fabulous cooperating between sealing surface of seat and the butterfly plate sealing surface, and the interchangeability of butterfly plate is lower.The disc holder of prior art eccentric-butterfly-valve has reduced the width of flange facing by the flange bolt, can cause leakage because flange facing is narrow during installation.
Summary of the invention
The present invention is for solving the prior art butterfly valve: be difficult to compensation behind the valve base sealing surface wear, butterfly plate exchange performance is lower, the technical problem that the flange facing of fixed valve base pressing plate is narrow, a kind of self compensation effect that has is provided, butterfly plate has two-way commutativity, switching torque is little, eccentric-butterfly-valve safe and convenient to use.
In order to achieve the above object, the technical solution adopted in the present invention provides a kind of eccentric-butterfly-valve, and it comprises valve body, goes up lower valve rod, butterfly plate, valve seat, disc holder; Described going up between lower valve rod and the valve body is provided with rolling bearing, and described butterfly plate is fixedlyed connected with last lower valve rod by taper pin; Described disc holder is connected by the positioning step of bolt and described valve body, is provided with gasket seal between described disc holder and the valve body; Described valve seat is arranged between valve body positioning step and the disc holder, and the bottom and the butterfly plate of described valve seat touch; Described valve seat is the metallic elastic valve seat of U type structure.
Further, be filled with the filler of V-structure between described upper valve rod and the valve body; The filler of described V-structure is arranged on upper valve rod rolling bearing upper end; The filler upper end of described V-structure is provided with hold-down grid; The upper end of described hold-down grid is provided with the clamping annulus; Described hold-down grid and clamping annulus are fixed on the valve body by double-screw bolt and nut.
Further, the bottom of described lower valve rod and valve body is provided with lower cover; Be provided with the gland pad between described lower cover and the valve body; Described lower cover is by being bolted on the valve body.
Further, described butterfly plate is a circular arc type two-part symplex structure; Described valve seat is the bi-directional symmetrical structure.
Further, the surface of contact of described valve seat and butterfly plate and valve seat is the chromium plating structure.
The present invention compared with prior art, its effect is actively and significantly.The present invention is by relocatable U type metallic elastic valve seat, positions according to the position of butterfly plate, realizes sealing by the compress variation of metal seat valve, effectively must carry out automatic compensation to the wearing and tearing of sealing surface; The surface of contact of valve seat and butterfly plate and valve seat is taked the chromium plating structure, has increased the wear resistance of valve seat; The symplex structure design of butterfly plate and valve seat makes butterfly plate and valve seat have two-way commutativity, has increased the working life of eccentric valve; Disc holder has solved the problem of prior art destruction flange facing by being bolted on the valve body.
Description of drawings
Fig. 1 is the structural representation of eccentric-butterfly-valve of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes valve body 1, upper valve rod 3, lower valve rod 4, butterfly plate 2, valve seat 7, disc holder 8; Be provided with rolling bearing 5 and rolling bearing 6 between upper valve rod 3, lower valve rod 4 and the valve body 1, butterfly plate 2 is fixedlyed connected with last lower valve rod by taper pin 12; Disc holder 7 is fixedlyed connected with the positioning step of valve body 1 by bolt 8, is provided with gasket seal 9 between the positioning step of disc holder 7 and valve body 1; The metallic elastic valve seat 10 of U type structure is arranged between the positioning step of disc holder 7 and valve body 1, and the bottom and the butterfly plate 2 of the metallic elastic valve seat 10 of U type structure touch; Metallic elastic valve seat 10 and butterfly plate 2 are the chromium plating structure with the surface of contact of valve seat 10.
Be filled with V-structure filler 11 between upper valve rod 3 and the valve body 1, V-structure filler 11 is arranged on the upper valve rod rolling bearing 5, V-structure filler 11 is provided with hold-down grid 13, hold-down grid 13 is provided with clamping annulus 14, and hold-down grid 13 and clamping annulus 14 are fixed on the valve body 1 by double-screw bolt and nut 15.
The bottom of lower valve rod 4 and valve body 1 is provided with lower cover 16, is provided with the gland pad between lower cover 16 and the valve body, presses down this and 16 is fixed on the valve body 1 by bolt 17.
In the using process, the valve seat 10 with floatability is arranged between the positioning step of disc holder 7 and valve body 1, gives the valve seat 10 must the pretension decrement by bolt 8; Valve seat 10 positions by butterfly plate 2, has guaranteed self compensation and sealing between valve seat 10 and the butterfly plate 2.There is not metal friction between upper valve rod 3 and lower valve rod 4 and the rolling bearing 5,6, reduced the fricative moment of torsion of valve rod and valve interior wall.
The circular arc type two-piece design of the two-piece design of last lower valve rod and butterfly plate 2 has increased the negotiability of valve body.Valve seat 10 is taked the circular arc symmetry excessively, has reached the two-way interchangeable effect of valve seat, has prolonged the working life of valve seat.
Claims (5)
1. an eccentric-butterfly-valve comprises valve body, goes up lower valve rod, butterfly plate, valve seat, disc holder; Described going up between lower valve rod and the valve body is provided with rolling bearing, and described butterfly plate is fixedlyed connected with last lower valve rod by taper pin; It is characterized in that: described disc holder is connected by the positioning step of bolt and described valve body, is provided with gasket seal between described disc holder and the valve body; Described valve seat is arranged between valve body positioning step and the disc holder, and the bottom and the butterfly plate of described valve seat touch; Described valve seat is the metallic elastic valve seat of U type structure.
2. a kind of eccentric-butterfly-valve as claimed in claim 1 is characterized in that: the filler that is filled with V-structure between described upper valve rod and the valve body; The filler of described V-structure is arranged on upper valve rod rolling bearing upper end; The filler upper end of described V-structure is provided with hold-down grid; The upper end of described hold-down grid is provided with the clamping annulus; Described hold-down grid and clamping annulus are fixed on the valve body by double-screw bolt and nut.
3. a kind of eccentric-butterfly-valve as claimed in claim 1 is characterized in that: the bottom of described lower valve rod and valve body is provided with lower cover; Be provided with the gland pad between described lower cover and the valve body; Described lower cover is by being bolted on the valve body.
4. a kind of eccentric-butterfly-valve as claimed in claim 1 is characterized in that: described butterfly plate is a circular arc type two-part symplex structure; Described valve seat is the bi-directional symmetrical structure.
5. a kind of eccentric-butterfly-valve as claimed in claim 1 is characterized in that: the surface of contact of described valve seat and butterfly plate and valve seat is the chromium plating structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100546202A CN101943269A (en) | 2009-07-10 | 2009-07-10 | Eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100546202A CN101943269A (en) | 2009-07-10 | 2009-07-10 | Eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101943269A true CN101943269A (en) | 2011-01-12 |
Family
ID=43435410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100546202A Pending CN101943269A (en) | 2009-07-10 | 2009-07-10 | Eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101943269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438227A (en) * | 2013-09-09 | 2013-12-11 | 浙江中德自控阀门有限公司 | Metal-sealing insulation jacket butterfly valve |
| CN104769259A (en) * | 2012-11-09 | 2015-07-08 | 皮尔伯格有限责任公司 | Flap device for an internal combustion engine or an electric vehicle |
-
2009
- 2009-07-10 CN CN2009100546202A patent/CN101943269A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769259A (en) * | 2012-11-09 | 2015-07-08 | 皮尔伯格有限责任公司 | Flap device for an internal combustion engine or an electric vehicle |
| CN103438227A (en) * | 2013-09-09 | 2013-12-11 | 浙江中德自控阀门有限公司 | Metal-sealing insulation jacket butterfly valve |
| CN103438227B (en) * | 2013-09-09 | 2016-08-17 | 浙江中德自控科技股份有限公司 | Metal sealing insulation jacket butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110112 |