CN201787091U - High-performance bidirectional refractory butterfly valve - Google Patents
High-performance bidirectional refractory butterfly valve Download PDFInfo
- Publication number
- CN201787091U CN201787091U CN2010205352945U CN201020535294U CN201787091U CN 201787091 U CN201787091 U CN 201787091U CN 2010205352945 U CN2010205352945 U CN 2010205352945U CN 201020535294 U CN201020535294 U CN 201020535294U CN 201787091 U CN201787091 U CN 201787091U
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- valve
- seat
- sealing
- valve seat
- valve body
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Abstract
The utility model relates to a high-performance bidirectional refractory butterfly valve including a valve body, a valve seat, a valve stem, a butterfly plate, a support, a transmission mechanism, a sealing member and a mounting member, a valve stem sealing device is arranged between the valve stem and the valve body. The valve seat consists of a polytetrafluoroethylene valve seat and a L-shaped metal valve seat which are fixedly arranged on the valve body via pressing plates; a metal fixed ring is arranged in the polytetrafluoroethylene valve seat; graphite sealing gaskets are respectively arranged between the L-shaped metal valve seat and the valve body, and between the L-shaped metal valve seat and the pressing plate. The valve in the utility model has the functions of fireproof and bidirectional sealing as well as can be applied into the inflammable and explosive occasions such as petroleum, chemical industry, power station, vessel, offshore drilling platforms etc.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly about a kind of fire-resistant butterfly valve.The utility model is applicable to inflammable, explosive occasions such as oil, chemical industry, power station, naval vessels, offshore drilling platform.
Background technique
Domestic existing enterprise produces fire-resistant butterfly valve product at present, as the patent No. is the double seal fire prevention butterfly valve of ZL200620100500.3, its sealing surface of seat is constituted by soft seal circle and metallic packing ring, make and produce soft seal and hard sealing double seal cooperating structure between sealing surface of seat and the butterfly plate sealing surface, during proper functioning by the sealing that cooperatively interacts of soft seal circle and butterfly plate sealing surface, when the soft seal circle takes place to leak because of wearing and tearing, the sealing that cooperatively interacts of metallic packing ring and butterfly plate sealing surface, continue maintaining valve door sealing state, prevent inflammable, explosive dielectric leakage breaking out of fire accident.But this structure can only realize one-way sealing, and when meeting reverse media pressure, metallic packing ring can curve inwardly and leak.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, and a kind of two-way fire-resistant butterfly valve of high-performance with two way sealed performance is provided.
The technical solution of the utility model comprises valve body, valve seat, valve rod, butterfly plate, support, driving mechanism, Sealing and assembling set, is provided with valve rod sealing device between valve rod and the valve body.Mainly be that valve seat is fixedly mounted on the valve body by pressing plate by teflon valve seat and L shaped metal seat valve and forms; The metal retaining ring is housed in the teflon valve seat; Be respectively equipped with the graphite grazing pad between L shaped metal seat valve and valve body and the pressing plate.
The utility model has the advantages that valve seat adopts teflon valve seat and L shaped metal seat valve to form double sealing structure, L shaped metal seat valve has fire-resistant and the elasticity two way sealed, under normal circumstances by the teflon valve base sealing, the elastic packing realization by L shaped metal seat valve during fire aligns, the two way sealed of reverse media.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Fig. 2 is the partial structurtes enlarged view of sealing pair among the utility model Fig. 1.
Fig. 3 is the partial structurtes enlarged view of valve rod sealing device among the utility model Fig. 1.
Embodiment
The two-way fire-resistant butterfly valve of high-performance as shown in Figure 1 comprises valve body 1, valve seat, valve rod 2, butterfly plate 3, support 4, driving mechanism 5, Sealing and assembling set, is provided with valve rod sealing device between valve rod 2 and the valve body 1.Valve seat is fixedly mounted on the valve body 1 by pressing plate 7, socket head screw 6 by teflon valve seat 8 and L shaped metal seat valve 9 to be formed.Metal retaining ring 10 is housed in the teflon valve seat 8, improves the rigidity intensity of teflon valve seat 8.Be respectively equipped with graphite grazing pad 11 between L shaped metal seat valve 9 and valve body 1 and the pressing plate 7, guarantee its sealability when teflon valve seat 8 lost efficacy.For the Elastic Contact sealing, has positive and negative two way sealed function between L shaped metal seat valve 9 and the butterfly plate 3.During the forward sealing, the forward pressure medium promotes butterfly plate 3 and compresses L shaped metal seat valve 9 realization sealings; When oppositely sealing, reverse media pressure makes L shaped metal seat valve 9 resiliently deformables compress butterfly plate 3 sealing surfaces and realizes sealing.Be provided with Upper shaft sleeve 13 and Lower shaft sleeve 12 between valve rod 2 and the valve body 1, be provided with valve rod sealing device in Upper shaft sleeve 13 upper ends, this valve rod sealing device is made up of double sealing mechanism, its primary seal mechanism is made up of polytetrafluoroethylene packing 14, packing ring 15, belleville spring 16, and fire-resistant sealing mechanism is made up of flexible graphite packing 17 and filler packing ring 18.
Claims (2)
1. the two-way fire-resistant butterfly valve of high-performance comprises valve body (1), valve seat, valve rod (2), butterfly plate (3), support (4), driving mechanism (5), Sealing and assembling set, is provided with valve rod sealing device between valve rod (2) and the valve body (1); It is characterized in that valve seat is fixedly mounted on the valve body by pressing plate (7) by teflon valve seat (8) and L shaped metal seat valve (9) forms; Metal retaining ring (10) is housed in the teflon valve seat (8); Be respectively equipped with graphite grazing pad (11) between L shaped metal seat valve (9) and valve body (1) and the pressing plate (7).
2. the two-way fire-resistant butterfly valve of high-performance according to claim 1, it is characterized in that valve rod sealing device is made up of double sealing mechanism, its primary seal mechanism is made up of polytetrafluoroethylene packing (14), packing ring (15), belleville spring (16), and fire-resistant sealing mechanism is made up of flexible graphite packing (17) and filler packing ring (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205352945U CN201787091U (en) | 2010-09-20 | 2010-09-20 | High-performance bidirectional refractory butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205352945U CN201787091U (en) | 2010-09-20 | 2010-09-20 | High-performance bidirectional refractory butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787091U true CN201787091U (en) | 2011-04-06 |
Family
ID=43819054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205352945U Expired - Fee Related CN201787091U (en) | 2010-09-20 | 2010-09-20 | High-performance bidirectional refractory butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787091U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240540A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | High platform dual-flange type high-performance butterfly valve |
| CN109477584A (en) * | 2016-08-02 | 2019-03-15 | 通用电气航空系统有限责任公司 | Sealing element, component and holding method |
-
2010
- 2010-09-20 CN CN2010205352945U patent/CN201787091U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240540A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | High platform dual-flange type high-performance butterfly valve |
| CN109477584A (en) * | 2016-08-02 | 2019-03-15 | 通用电气航空系统有限责任公司 | Sealing element, component and holding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130920 |