CN2428639Y - Improved butterfly valve with fluoroplastic lining - Google Patents
Improved butterfly valve with fluoroplastic lining Download PDFInfo
- Publication number
- CN2428639Y CN2428639Y CN 00233503 CN00233503U CN2428639Y CN 2428639 Y CN2428639 Y CN 2428639Y CN 00233503 CN00233503 CN 00233503 CN 00233503 U CN00233503 U CN 00233503U CN 2428639 Y CN2428639 Y CN 2428639Y
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- China
- Prior art keywords
- valve
- valve seat
- butterfly
- hole
- fluoroplastics lining
- 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 relates to an improved butterfly valve with a fluoroplastic lining, which comprises an upper valve body, a lower valve body, and a butterfly plate. The utility model is characterized in that channel openings for fluid, which are formed by the enlarged valve bodies, are sheathed with a valve seat; through holes are arranged above and below the central location of the valve seat; the valve seat is an elastic body; the inner surface of the valve seat and the surfaces of an upper and a lower through holes are provided with fluoroplastic linings; a tight fit is formed among the inner surface of the valve seat, the surfaces of the upper and the lower through holes, the butterfly plate, and an upper and a lower valve rods on the butterfly plate. The utility model has the advantages of good tightness, no leakage, long service life, etc.
Description
The utility model relates to a kind of butterfly valve, relates to a kind of fluoroplastics lining butterfly valve specifically.
Butterfly valve is widely used, in order to adapt to the requirement of high temperature, high pressure, wear-resisting and anti-strong acid, highly basic, recently developed lined with fluoroplastic material Butterfly valve with liner, for example, adopt the teflon lined medium of can being able to bear strong corrosion, as nitric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid, seawater, chlorine peroxide, bleaching filtered fluid, hydrogen chlorine etc.Applicable temperature is-85 to 200 ℃, is widely used in industries such as chemical industry, metallurgy, food, medicine, weaving.Known fluoroplastics lining butterfly valve comprises upper valve body 1 as shown in Figure 1, following valve body 2, and butterfly plate 3, wherein upper valve body 1 is the semi-cylindrical shaped housing of hollow, along extend upward the supporting base that is provided with the upper valve rod that is used to support butterfly plate 3 perpendicular to columnar axial direction.Following valve body 2 is the semi-cylindrical shaped housing of hollow, along extend downwards the supporting base that is provided with the lower valve rod that is used to support butterfly plate 3 perpendicular to columnar axial direction.The surface, fluid passage that said upper and lower valve body fastens formation is lined with in the fluorine profit and the surface of butterfly plate 3 is lined with the fluorine lining, and extends to the end of valve rod.This butterfly valve also comprises upper O-shape ring 6, butterfly spring 7, seal cartridge 8, lower O-shape ring 9.Rotate the valve rod of butterfly plate 3, butterfly plate 3 can closure or the fluid passage of opened butterfly valve.
The shortcoming of above-mentioned known fluoroplastics lining butterfly valve structure is that sealing is not good, does not reach zero leakage.Though, someone attempts it is made improvements, as in the sealing area of valve, skin is provided with rubber or resin material, by improving elasticity to improve sealing, but because skin is difficult to bonding with internal layer fluoroplastic ring, sealing effect is undesirable, and working life is short, especially in use, butterfly plate often moves, and butterfly valve loses original sealing very soon.
The purpose of this utility model is, a kind of improved fluoroplastics lining butterfly valve is provided, and to overcome the shortcoming of prior art, reaches sealing, reliability and the working life of improving butterfly valve.
For reaching above-mentioned purpose, the utility model provides a kind of improved fluoroplastics lining butterfly valve, it comprises: upper valve body, following valve body, butterfly plate, it is characterized in that, with the butterfly plate junction, in the expansion, the fluid passage holes that following valve body constitutes, and be arranged with the cylindrical shape valve seat, along with the Vertical direction of valve seat axis, on the middle position of valve seat, have through hole, and respectively with butterfly plate on, lower valve rod matches, and described valve seat is an elastomer, along on valve seat cylindrical body internal surface and the cylindrical body, the lower through-hole surface is lined with fluoroplastics lining, on promptly the cylindrical body internal surface of described valve seat reaches, lower through-hole surface and butterfly plate and on, lower valve rod closely cooperates.
Described cylindrical shape valve seat, preferably two ends have flange, and the internal surface of flange combines with the loop concave at valve body two ends, and described flange outer surface is lined with fluoroplastics lining.
Cooperating between the fluorine liner surface of the upper and lower hole of described valve seat fluorine liner surface and the upper and lower valve rod of butterfly plate, preferably interference fit.
Described valve seat is provided with annular groove in the circumference both sides of upper and lower through hole of next-door neighbour's cylindrical body, and the gland that has annular flange flange correspondingly is fastened in the described annular groove, and described gland central zone is porose and align with the upper and lower through hole of valve seat.
Fluoroplastics lining butterfly valve of the present utility model because valve seat has flexibility, can be made interference fit with butterfly plate, thereby reach zero leakage, has not only improved sealing, and improves 2-3 times of working life than known fluoroplastics lining butterfly valve.
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is the schematic representation of known fluoroplastics lining butterfly valve;
Fig. 2 is the schematic representation of fluoroplastics lining butterfly valve of the present utility model.
Referring to shown in Figure 2, fluoroplastics lining butterfly valve of the present utility model comprises upper valve body 1, following valve body 2, butterfly plate 3, improvement of the present utility model is, fasten the place, fluid passage that forms at described upper valve body 1 and following valve body 2, promptly with butterfly plate 3 junctions, enlarge the fluid passage holes of valve body and be arranged with valve seat 4, valve seat 4 is a cylindrical body, and promptly the outer surface of cylindrical body combines with the port hole of valve body.Preferably two ends have the cylindrical body of flange.The inner ring surface that is flange combines with the loop concave at valve body two ends.Valve seat 4 is an elastomer, for example is rubber material.Along the direction vertical with the cylindrical shape axis, be provided with upper and lower through hole at the central position of valve seat, promptly pass the wall of cylindrical body, but the height of upper and lower through hole is less than the cylindrical body wall thickness.Along valve seat cylindrical body internal surface, upper and lower through-hole surfaces, the end face of cylindrical body or have the cylindrical body of flange all is lined with fluoroplastics lining at the outer surface of flange, and described upper and lower through hole cooperates with the upper and lower valve rod of butterfly plate 3 respectively.Described valve seat is respectively equipped with annular groove at the circumference of the upper and lower through hole of next-door neighbour's cylindrical body, and gland 5 has the annular flange flange that matches with annular groove, and this female flanged promptly is fastened on respectively in the annular groove of this upper and lower through hole.Described gland 5 is located in the central in the direction along the axis of through hole, is provided with, and lower through-hole also aligns with the upper and lower through hole of valve seat 4.Gland 5 is fastened in the annular groove of valve seat 4 owing to gland 5 for teflon, thereby forces valve seat 4 to produce sealing force with contacting of butterfly plate 3, to form the reliable sealing first time.In addition, because valve seat 4 is elastomeric materials, thus can be interference fit between the upper and lower valve rod fluorine liner surface of the upper and lower through hole fluorine liner surface of valve seat 4 and butterfly plate 3, thus axially sealing for the second time formed.
Fluorine lining described in the utility model can be a polytetrafluoroethylene (PTFE), perfluoroethylene-propylene (FEP) and tetrafluoroethylene and perfluor (just) propyl vinyl ether copolymer (PFA), valve seat 4 used elastomers can be nitrile rubber (NBR), ethylene propylene diene rubber (EPDM), neoprene (CR), silicone rubber or semi-hard plastic.
Above-described preferred embodiment as explanation usefulness, is not to be used for limiting scope of the present utility model only.Those skilled in the art, improvement or the replacement done in not breaking away from spirit and scope of the present utility model should be considered to be encompassed in the protection domain of the present utility model.
Claims (5)
1, a kind of improved fluoroplastics lining butterfly valve, comprise upper valve body, following valve body, butterfly plate, it is characterized in that, with the butterfly plate junction, in the expansion, the fluid passage holes that following valve body constitutes, and be arranged with the cylindrical shape valve seat, along with the Vertical direction of valve seat axis, on the middle position of valve seat, have through hole, and respectively with butterfly plate on, lower valve rod matches, described valve seat is an elastomer, along on valve seat cylindrical body internal surface and the cylindrical body, the lower through-hole surface is lined with fluoroplastics lining, on promptly the cylindrical body internal surface of described valve seat reaches, lower through-hole surface and butterfly plate and on, lower valve rod closely cooperates.
2, fluoroplastics lining butterfly valve as claimed in claim 1 is characterized in that, described cylindrical shape valve seat, and preferably two ends have flange, and the internal surface of flange combines with the loop concave at valve body two ends, and described flange outer surface is lined with fluoroplastics lining.
3, fluoroplastics lining butterfly valve as claimed in claim 1 is characterized in that, cooperating between the fluoroplastics lining surface of the upper and lower hole of described valve seat fluoroplastics lining surface and the upper and lower valve rod of butterfly plate, preferably interference fit.
4, fluoroplastics lining butterfly valve as claimed in claim 1, it is characterized in that, described valve seat is at the circumference of the upper and lower through hole of next-door neighbour's cylindrical body, be provided with annular groove, the gland that has annular flange flange correspondingly is fastened in the described annular groove, and described gland central zone is porose and align with the upper and lower through hole of valve seat.
5, as the arbitrary described fluoroplastics lining butterfly valve of claim 1-4, it is characterized in that the elastomeric material of described valve seat can be rubber or semi-hard plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00233503 CN2428639Y (en) | 2000-05-24 | 2000-05-24 | Improved butterfly valve with fluoroplastic lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00233503 CN2428639Y (en) | 2000-05-24 | 2000-05-24 | Improved butterfly valve with fluoroplastic lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2428639Y true CN2428639Y (en) | 2001-05-02 |
Family
ID=33595842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00233503 Expired - Fee Related CN2428639Y (en) | 2000-05-24 | 2000-05-24 | Improved butterfly valve with fluoroplastic lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2428639Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216118B (en) * | 2008-01-14 | 2012-07-18 | 沈阳恒屹实业有限公司 | Hollow butterfly plate butterfly valve |
| US8348236B2 (en) | 2007-10-31 | 2013-01-08 | Saint-Gobain Performance Plastics Corporation | Butterfly valve with a rigid seal |
| US8430113B2 (en) | 2007-04-26 | 2013-04-30 | Asahi Organic Chemicals Industry Co., Ltd. | Method of manufacturing valve, and valve produced by the method |
| US8616585B2 (en) | 2007-10-31 | 2013-12-31 | Saint-Gobain Performance Plastics Corporation | Pipe coupling |
| US8800965B2 (en) | 2007-10-31 | 2014-08-12 | Saint-Gobain Performance Plastics Corporation | Butterfly valve with a rigid seal |
| CN106840786A (en) * | 2017-04-19 | 2017-06-13 | 成都南方电子仪表有限公司 | A kind of online low concentration chlorine analysis system |
| CN107289142A (en) * | 2017-08-08 | 2017-10-24 | 河北奥磊阀业制造有限公司 | High leakproofness anti-corrosion new material steel lining butterfly valve |
| WO2024093174A1 (en) * | 2022-11-01 | 2024-05-10 | 南京肯特复合材料股份有限公司 | Method for forming polyfluoroalkoxy (pfa)-coated butterfly plate without flow marks |
-
2000
- 2000-05-24 CN CN 00233503 patent/CN2428639Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8430113B2 (en) | 2007-04-26 | 2013-04-30 | Asahi Organic Chemicals Industry Co., Ltd. | Method of manufacturing valve, and valve produced by the method |
| US8348236B2 (en) | 2007-10-31 | 2013-01-08 | Saint-Gobain Performance Plastics Corporation | Butterfly valve with a rigid seal |
| US8616585B2 (en) | 2007-10-31 | 2013-12-31 | Saint-Gobain Performance Plastics Corporation | Pipe coupling |
| US8800965B2 (en) | 2007-10-31 | 2014-08-12 | Saint-Gobain Performance Plastics Corporation | Butterfly valve with a rigid seal |
| CN101216118B (en) * | 2008-01-14 | 2012-07-18 | 沈阳恒屹实业有限公司 | Hollow butterfly plate butterfly valve |
| CN106840786A (en) * | 2017-04-19 | 2017-06-13 | 成都南方电子仪表有限公司 | A kind of online low concentration chlorine analysis system |
| CN107289142A (en) * | 2017-08-08 | 2017-10-24 | 河北奥磊阀业制造有限公司 | High leakproofness anti-corrosion new material steel lining butterfly valve |
| WO2024093174A1 (en) * | 2022-11-01 | 2024-05-10 | 南京肯特复合材料股份有限公司 | Method for forming polyfluoroalkoxy (pfa)-coated butterfly plate without flow marks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XU GE Free format text: FORMER NAME OR ADDRESS: SHIDE SPECIAL VALVE CO., LTD., SUZHOU |
|
| CP03 | Change of name, title or address |
Address after: Baiyun road 215128 Jiangsu Suzhou City Development Zone No. 253 Noritoshi Garden 7 Room 204 Patentee after: Xu Bengde Address before: 215128 No. 6-1 Yangshan Road, Wuxian Development Zone, Suzhou, Jiangsu Patentee before: Shide Special Valve Co., Ltd., Suzhou |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |