CN1047659C - Butterfly gate for fluid pipeline - Google Patents
Butterfly gate for fluid pipeline Download PDFInfo
- Publication number
- CN1047659C CN1047659C CN 96111617 CN96111617A CN1047659C CN 1047659 C CN1047659 C CN 1047659C CN 96111617 CN96111617 CN 96111617 CN 96111617 A CN96111617 A CN 96111617A CN 1047659 C CN1047659 C CN 1047659C
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- China
- Prior art keywords
- valve
- fluoroplastic
- valve body
- valve rod
- butterfly
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- Expired - Fee Related
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Abstract
The present invention provides a butterfly valve for a fluid pipeline. The butterfly valve is technically characterized in that the butterfly valve comprises an integrated valve rod and a butterfly valve, wherein the overflowing positions of the valve rod and the butterfly valve are cast with fluoroplastic layers; a valve body is composed of two symmetrical half valve bodies, wherein a fluoroplastic ring is embedded in the overflowing position of the inner wall of the valve body; the fluoroplastic layers are in interference fit with the fluoroplastic ring; fluoroplastic fillers are arranged in the connection positions of the valve rod and the upper end and the lower end of the valve rod, and are respectively and tightly pressed by an upper filler gland and a lower filler gland; the upper end of the valve rod is connected with a valve rod driving device. The butterfly valve of the present invention has the advantages of high proof pressure, high abrasive resistance, favorable corrosion preventing performance, favorable anti-seeping performance and long service life.
Description
The present invention relates to the fluid line valve, particularly a kind of fluid line butterfly valve.
In the background technique, as GAR-SEAL, the SAFETY-SEAL of Germany's production, the butterfly valve of models such as MOBILE-SEAL, STERILE-SEAL, its valve body is the metal construction of upper and lower slit bamboo or chopped wood split, backing layer is the resilient member of plastics or the independent car system of rubber, and metal valve stem is connected by bolt or pin with butterfly plate.Adopt " O " type circle not have wiper seal from tension force when valve rod is connected with valve body, the plastic lining nexine is combined in valve body overcurrent position, relies on upper and lower slit bamboo or chopped wood connecting bolt that the resistance to pressure of butterfly valve is regulated.When above-mentioned butterfly valve is worked under the big working condition of acid, alkali, medium difference variation, the easy burn in valve rod and butterfly plate joint weares and teares and seepage occurs, the plastic material expansion coefficient that backing layer adopted is not subjected to the restriction of associated metal member greatly, again, and it is malfunctioning to cause butterfly valve to close easily; The also easy seepage in valve rod and valve body joint, therefore resistance to pressure, the sealing of above-mentioned butterfly valve are all undesirable, and working life is short.Above-mentioned butterfly valve uses through Daqing petrochemical two factories, and its pressure only can remain on 0.1-0.3mpa scope, exceeds its sealing of above-mentioned pressure and suffers destruction easily and the seepage phenomenon occurs to have only working life about 200 days.The life-span that the TOMOF type butterfly valve that another kind of Japan produces uses in Tianyuan Chemical Plant., Shanghai is then less than 80 days.Stop and keep in repair or change at least 10 ten thousand yuan of the each losses of butterfly valve, cause the pollution of medium simultaneously environment.The price of import butterfly valve is also than higher, and every (Φ 700) butterfly valve price is up to 25-30 ten thousand yuan.
The objective of the invention is to provide the fluid line butterfly valve of a kind of resistance to pressure, good airproof performance, long working life.
Task of the present invention is finished as follows.
A kind of fluid line butterfly valve, comprise valve rod, valve rod driving device, butterfly plate, valve body, its characteristics are that described valve rod and butterfly plate are the metal construction of one, the metal construction wetted surfaces rheo-die-casting that described valve rod connects butterfly plate has FEP or PTFE fluorine to mould layer, described valve body is along the structure of stem shaft to the relative bolt of half valve body of two symmetries, FEP or PTFE fluoroplastic ring are inserted in described valve rod two ends, described two halves valve body is behind the peripheral bolt of valve rod, described fluoroplastic ring is spliced on the wetted surfaces in the valve body, the corresponding position of die casting fluoroplastic ring in the fluorine of butterfly plate radially outer edge part is moulded layer and valve body is realized interference fit, and described fluorine is moulded on layer and the fluoroplastic ring, tightly be embedded with packing ring and following packing ring in the slot between the lower end respectively.
The transverse section outer rim that the fluorine of the butterfly plate radially outer edge of butterfly valve of the present invention part is moulded layer can be the circular arc of evagination, and the contact edge of moulding layer with fluorine on the described fluoroplastic ring transverse section is the circular arc of indent, realizes interference fit between described two circular arcs.
The fluoroplastic ring of butterfly valve of the present invention can adopt " E " the shape cross-sectional configuration of band dovetail joint and the valve body of coupling to splice.
The fluorine of butterfly valve of the present invention is moulded in the slit between layer and the fluoroplastic ring upper and lower end and can be filled out respectively and be embedded with fluoroplastic rope filler, described going up between fluoroplastic rope top, valve rod and the valve body is provided with Gland, the described Gland of going up is by bolt and valve body bolt, be provided with down Gland between described fluoroplastic rope down below, valve rod and the valve body, described Gland down is by bolt and valve body bolt.
Butterfly valve of the present invention adopts valve rod and butterfly plate integral structure, the overcurrent position die casting that described valve rod connects butterfly plate has fluorine to mould layer, the valve interior wall overcurrent position fluoroplastic ring of having spliced, described fluorine is moulded between layer and the fluoroplastic ring and is realized interference fit, because fluoroplastic spare is subjected to the restriction of associated metal member, so the withstand voltage leakage performance at overcurrent position is fine in the butterfly valve, the keying of butterfly valve is also very flexible.Valve rod and valve body are provided with filler and Gland in the jointing place of upper and lower end, Gland can be regulated it by bolt again and compress degree, therefore can avoid pipeline internal medium to ooze out, also can improve the resistance to pressure of butterfly valve from the upper and lower end gap location of valve rod and valve body, the compressive strength of butterfly valve of the present invention can be brought up to 2.4mpa, can guarantee the working pressure of 1.0mpa.Fluoroplastic, particularly FEP, PTFE fluoroplastic itself have good acid-and base-resisting corrosion and wear resistance.The test that butterfly valve of the present invention is done shows, in 1.0-1.2mpa range of working pressure ,-80 °-180 ℃ temperature range, equal ne-leakage phenomenon when using in various media such as acid, alkali, salt, strong oxidizer, organic solvent.Butterfly valve of the present invention compared to the prior art, improve 5-8 times its normal working life, compression resistance improves 2-3 times, it is wear-resisting, corrosion-resistant and leakage performance is all fine, the annual stop frequency that can reduce because of maintenance or replacing butterfly valve reaches 7-9 times, direct or indirect economic benefit reaches more than 1,000,000 yuan, and has correspondingly reduced the pollution of medium to environment.Butterfly valve of the present invention also has the low advantage of cost, and every price has only about 1/3rd of imported product, can save a large amount of foreign exchanges.Have good economic benefits and environmental benefit.
Below with reference to accompanying drawing structure of the present invention is described in further detail.
Fig. 1 is the plan view of butterfly valve of the present invention.
Fig. 2 is the left view of butterfly valve among Fig. 1.
Fig. 3 is along the broken section organigram of B-B line among Fig. 2.
Fig. 4 is along the organigram of analysing and observe of A-A line among Fig. 1
Consult Fig. 1-Fig. 4, butterfly valve of the present invention comprises: incorporate valve rod 1 and butterfly plate 3, the overcurrent position die casting of described butterfly plate and valve rod have fluorine to mould layer 5, and described fluorine is moulded the circular arc that layer transverse section outer rim is preferably evagination.Fluoroplastic ring 6 is inserted at valve rod 1 two ends, and its transverse section is preferably " E " shape section of band dovetail joint.Valve body 4 be along stem shaft to the half valve body structure of two symmetries, valve interior wall is made the shape that can be complementary with " E " shape section of fluoroplastic ring 6, described two halves valve body is combined in valve rod 1 peripheral back and connects with several bolts 13, again the fluoroplastic ring 6 and the inwall of valve body 4 are spliced, and make fluoroplastic ring 6 and fluorine mould layer 5 realization interference fit, described fluoroplastic E shape section and fluorine are moulded the circular arc that layer 5 contact edge is preferably made indent, can realize best interference fit with the circular arc that fluorine is moulded evagination on layer 5 transverse section like this.The material that described fluorine is moulded layer, fluoroplastic ring preferably adopts FEP or PTFE fluoroplastic, and it is corrosion-resistant, wear-resistant and resistance to pressure is all relatively good.Valve rod 1 and valve body 4 upper and lower jointing places, fluorine is moulded in the slit between layer 5 and the fluoroplastic ring 6 respectively filling fluoroplastic rope 7 and 8, is also compressed with upper and lower Gland 9 and 11 respectively, described up and down Gland is used bolt 10 and the 12 bolts two ends at valve body 4 respectively, bolt 10 and 12 can be aligned the compaction degree of Gland up and down respectively, in case the ducted medium of fluid stopping body overflows from the axle seam of butterfly valve top and the bottom.Valve rod 1 upper end is connected with valve rod driving device 2, the same with the valve rod driving device in the known technology, adopt lever type or scroll-type structure, can manual, pneumatic, hydraulic transmission or electronic, valve rod driving device by actuate valve stem, reach the purpose that opens and closes butterfly valve.
When butterfly valve of the present invention uses, butterfly valve is placed between two pipelines, the two ends pipeline connects airtight butterfly valve between two pipes and can use by flange plate.Rotation valve rod drive unit 2 drives butterfly plate 3 by valve rod 1 and rotates promptly able to turn on or off butterfly valve.
Claims (5)
1, a kind of fluid line butterfly valve, comprise valve rod (1), valve rod driving device (2), butterfly plate (3), valve body (4), it is characterized in that described valve rod and butterfly plate are the metal construction of one, the metal construction flow passage site surface rheo-die-casting that described valve rod connects butterfly plate has FEP or PTFE fluorine to mould layer (5), described valve body is along the structure of stem shaft to the relative bolt of half valve body of two symmetries, FEP or PTFE fluoroplastic ring (6) are inserted in described valve rod two ends, described two halves valve body is behind the peripheral bolt of valve rod, fluoroplastic ring (6) is spliced on the wetted surfaces in valve body, die casting realizes interference fit at the corresponding position that the fluorine of butterfly plate radially outer edge part is moulded fluoroplastic ring (6) in layer (5) and the valve body, and described fluorine is moulded on layer (5) and the fluoroplastic ring (6), tightly be embedded with packing ring (7) and following packing ring (8) in the slot between the lower end respectively.
2, fluid line butterfly valve according to claim 1, it is characterized in that it is the circular arc of evagination that described butterfly plate radially outer edge fluorine is partly moulded the transverse section outer rim of layer (5), on described fluoroplastic ring (6) transverse section with fluorine mould the layer (5) contact edge be the circular arc of indent, realize interference fit between described two circular arcs.
3, fluid line butterfly valve according to claim 1 and 2 is characterized in that fluoroplastic ring (6) adopts " E " the shape cross-sectional configuration of band dovetail joint and the valve body (4) of coupling to splice.
4, fluid line butterfly valve according to claim 1 and 2, it is characterized in that described fluorine is moulded to fill out respectively in the slot between layer (5) and fluoroplastic ring (6) upper and lower end is embedded with fluoroplastic rope filler, described going up between fluoroplastic rope top, valve rod (1) and the valve body (4) is provided with Gland (9), the described Gland of going up is by bolt (10) and valve body (4) upper end bolt, be provided with down Gland (11) between described fluoroplastic rope down below, valve rod (1) and the valve body (4), described Gland down is by bolt (12) and valve body (4) lower end bolt.
5, fluid line butterfly valve according to claim 3, it is characterized in that described fluorine is moulded to fill out respectively in the slot between layer (5) and fluoroplastic ring (6) upper and lower end is embedded with fluoroplastic rope filler, described going up between fluoroplastic rope top, valve rod (1) and the valve body (4) is provided with Gland (9), the described Gland of going up is by bolt (10) and valve body (4) upper end bolt, be provided with down follower (11) between described fluoroplastic rope down below, valve rod (1) and the valve body (4), described follower down is by bolt (12) and valve body (4) lower end bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96111617 CN1047659C (en) | 1996-08-09 | 1996-08-09 | Butterfly gate for fluid pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96111617 CN1047659C (en) | 1996-08-09 | 1996-08-09 | Butterfly gate for fluid pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1173599A CN1173599A (en) | 1998-02-18 |
| CN1047659C true CN1047659C (en) | 1999-12-22 |
Family
ID=5121205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96111617 Expired - Fee Related CN1047659C (en) | 1996-08-09 | 1996-08-09 | Butterfly gate for fluid pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047659C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384848B (en) * | 2006-03-14 | 2011-04-13 | 株式会社巴技术研究所 | Butterfly valve |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771385B (en) * | 2008-12-30 | 2013-01-30 | 北京富纳特创新科技有限公司 | Power amplification circuit and thermally induced sound-producing device with power amplification circuit |
| CN106147803B (en) * | 2016-08-11 | 2021-11-19 | 中冶焦耐(大连)工程技术有限公司 | Pressure adjusting device and method for coking chamber of coke oven |
-
1996
- 1996-08-09 CN CN 96111617 patent/CN1047659C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384848B (en) * | 2006-03-14 | 2011-04-13 | 株式会社巴技术研究所 | Butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1173599A (en) | 1998-02-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Butterfly gate for fluid pipeline Effective date of registration: 20100421 Granted publication date: 19991222 Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch Pledgor: Dong Xiufeng Registration number: 2010990000742 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20110602 Granted publication date: 19991222 Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch Pledgor: Dong Xiufeng Registration number: 2010990000742 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Butterfly gate for fluid pipeline Effective date of registration: 20110602 Granted publication date: 19991222 Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch Pledgor: Dong Xiufeng Registration number: 2011990000205 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20120528 Granted publication date: 19991222 Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch Pledgor: Dong Xiufeng Registration number: 2011990000205 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Butterfly gate for fluid pipeline Effective date of registration: 20120528 Granted publication date: 19991222 Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch Pledgor: Dong Xiufeng Registration number: 2012990000243 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140325 Granted publication date: 19991222 Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch Pledgor: Dong Xiufeng Registration number: 2012990000243 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19991222 Termination date: 20150809 |
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| EXPY | Termination of patent right or utility model |