CN2890526Y - Limit telescopic butterfly valve - Google Patents
Limit telescopic butterfly valve Download PDFInfo
- Publication number
- CN2890526Y CN2890526Y CN 200620100434 CN200620100434U CN2890526Y CN 2890526 Y CN2890526 Y CN 2890526Y CN 200620100434 CN200620100434 CN 200620100434 CN 200620100434 U CN200620100434 U CN 200620100434U CN 2890526 Y CN2890526 Y CN 2890526Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flange
- telescopic pipe
- expansion
- 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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- Lift Valve (AREA)
Abstract
A limit telescopic butterfly valve has a valve body with an upper valve rod and a lower valve rod arranged in. A valve plate is connected with the upper and the lower valve. A seal valve seat is arranged between the valve plate and the valve body. An expansion pipe is connected with one side of the valve body. The expansion pipe outer end has an expansion flange. A gland and a seal ring are arranged outside the expansion pipe, and the gland is connected with the valve body pair flange through fastener. The utility model is characterized in that: the expansion pipe gland, the valve body pair flange, the expansion flange or the expansion pipe pair flange are connected with a limit screw; and a nut is arranged at one end of the limit screw. The technical scheme adopts the screw and the nut (a plurality of screws) to connect the valve with the expansion pipe. In normal using condition, expansion range L or H is left. But if thermal expansion and cool shrinkage and various stress change is produced because of temperature difference, which makes the expansion pipe at the maximum expansion range, the range will not continuously increase because of axial displacement change to make the expansion pipe detach from the valve body seal surface and cause valve failure.
Description
Technical field
The utility model relates to valve, particularly relates to a kind of spacing flexible butterfly valve.
Background technique
The structure of butterfly valve mainly is made up of institutes such as valve body, valve plate and valve rod, valve seat and Sealing, fastening pieces, and described flexible butterfly valve is that common butterfly valve connects telescopic pipe again.Flexible butterfly valve can be widely used in the systems such as power station, water factory, municipal engineering and industrial plumbing, brings the effect of getting twice the result with half the effort for the replacement of maintenance, transformation and the supporting valve of the installation of pipe-line system engineering and old pipeline.In order effectively to eliminate the destruction that pipeline parts brings because of the variation of expanding with heat and contract with cold of producing of reasons such as the temperature difference and various stress in long-term using process; reach the purpose of protection pipe-line system, require flexible butterfly valve in use telescopic pipe be in all the time and move axially state of changing.Existing flexible its defective of butterfly valve is when telescopic pipe is in the maximal dilation scope, changes as axial displacement and continues to strengthen, and telescopic pipe will break away from valve body sealing surface, cause valve invalidation.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming of prior art, to provide in use a kind of, when telescopic pipe is in the maximal dilation scope, can not continue to strengthen the spacing flexible butterfly valve that breaks away from valve body sealing surface because of axial displacement changes.
The technological scheme of the spacing flexible butterfly valve of the utility model is: a valve body is arranged, install valve rod and lower valve rod in the valve body, connect valve plate in the upper and lower valve rod, between valve plate and the valve body seal valve seat is arranged, side at valve body connects telescopic pipe, there is creeping flange the telescopic pipe outer end, telescopic pipe has gland and seal ring outward, gland connects the secondary flange of valve body by fastening piece, it is characterized in that connecting spacing screw rod on telescopic pipe gland, the secondary flange of valve body, creeping flange or the secondary flange of telescopic pipe, one of spacing screw rod nut is installed.
Spacing flexible butterfly valve of the present utility model, adopt screw rod and nut (many screw rods) that valve body and telescopic pipe are coupled together, under normal use condition, leave flexible range L or H, if but expand with heat and contract with cold and the variation of various stress because of reasons such as the temperature difference produce, when making telescopic pipe be in the maximal dilation scope, can not break away from valve body sealing surface, cause valve invalidation because of axial displacement changes to continue to strengthen.
Spacing flexible butterfly valve of the present utility model is shaped on through hole on the secondary flange of its gland and valve body, is shaped on tapped hole on the creeping flange, and spacing screw rod passes through hole, and the other end of spacing screw rod is connected in the creeping flange tapped hole.The outer wall of its telescopic pipe is installed the secondary flange of telescopic pipe, is shaped on perforation in secondary flange of telescopic pipe and the gland, is shaped on screw hole in the secondary flange of valve body, and screw rod passes two perforation, and the other end of screw rod is connected in the secondary flange screw hole of valve body.
Description of drawings
Fig. 1 is one of the spacing flexible butterfly valve embodiment of a utility model structural representation;
Fig. 2 is the spacing flexible butterfly valve embodiment's of the utility model two structural representations.
Embodiment
The utility model discloses a kind of spacing flexible butterfly valve, as Fig. 1, shown in Figure 2, a valve body 3 is arranged, install valve rod 1 and lower valve rod 6 in the valve body, on, lower valve rod 1, connect valve plate 4 in 6, between valve plate 4 and the valve body 3 seal valve seat 5 is arranged, side at valve body connects telescopic pipe 20, there is creeping flange 10 telescopic pipe 20 outer ends, telescopic pipe has gland 8 and seal ring 11 outward, gland 8 connects the secondary flange 7 of valve body by fastening piece 9, and its major technology is characterised in that telescopic pipe gland 8, the secondary flange 7 of valve body, connect spacing screw rod 12 on the secondary flange 18 of creeping flange 10 or telescopic pipe, one of spacing screw rod 12 nut 13 is installed.So the technological scheme after improving has promptly increased limit stoper on the basis of original structure.This limit stoper is made up of spacing screw rod and nut, and spacing screw rod is fixed on the secondary flange of valve body or on the secondary flange of telescopic pipe, the screw rod the other end fixedly carries out spacing with nut according to the flexible scope of flexible butterfly valve.Therefore, this valve in use when telescopic pipe is in the maximal dilation scope, does not break away from valve body sealing surface because of axial displacement changes to continue to strengthen, and causes valve invalidation.
One of specific embodiment of the spacing flexible butterfly valve of the utility model as shown in Figure 1, be shaped on through hole 16,17 on the secondary flange 7 of gland 8 that its telescopic pipe is outer and valve body, be shaped on tapped hole 15 on the creeping flange 10, spacing screw rod 12 passes through hole 16,17, and the other end of spacing screw rod 12 is connected in the creeping flange tapped hole 15.Should flexible scope length H as shown in Figure 1, nut 13 walks to 13 ' between.Spacing screw rod 12 can have tightening nut 14, and Sealings such as Gland 2 are arranged between valve rod and the valve body.
Embodiment's two, as shown in Figure 2, the outer wall of its telescopic pipe 20 is installed the secondary flange 18 of a telescopic pipe, be shaped on perforation 21,22 in secondary flange 18 of telescopic pipe and the gland 8, in the secondary flange 7 of valve body, be shaped on screw hole 23 (tapped hole), spacing screw rod 12 ' pass two perforation 21,22, spacing screw rod 12 ' the other end be connected in the secondary flange screw hole 23 of valve body, flexible scope is L.
Claims (3)
1, spacing flexible butterfly valve, a valve body is arranged, install valve rod and lower valve rod in the valve body, connect valve plate in the upper and lower valve rod, between valve plate and the valve body seal valve seat is arranged, side at valve body connects telescopic pipe, there is creeping flange the telescopic pipe outer end, and telescopic pipe has gland and seal ring outward, and gland connects the secondary flange of valve body by fastening piece, it is characterized in that connecting spacing screw rod on telescopic pipe gland, the secondary flange of valve body, creeping flange or the secondary flange of telescopic pipe, one of spacing screw rod nut is installed.
2, spacing flexible butterfly valve as claimed in claim 1, it is characterized in that being shaped on through hole (16,17) on the secondary flange of gland (8) and valve body (7), be shaped on tapped hole (15) on the creeping flange (10), spacing screw rod (12) passes through hole (16,17), and the other end of spacing screw rod (12) is connected in the creeping flange tapped hole (15).
3, spacing flexible butterfly valve as claimed in claim 1, the outer wall that it is characterized in that telescopic pipe (20) is installed the secondary flange (18) of telescopic pipe, be shaped on perforation (21,22) in secondary flange (18) of telescopic pipe and the gland (8), in the secondary flange of valve body (7), be shaped on screw hole (23), screw rod (12 ') passes two perforation (21,22), and the other end of screw rod (12 ') is connected in the secondary flange screw hole of valve body (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100434 CN2890526Y (en) | 2006-01-13 | 2006-01-13 | Limit telescopic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100434 CN2890526Y (en) | 2006-01-13 | 2006-01-13 | Limit telescopic butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2890526Y true CN2890526Y (en) | 2007-04-18 |
Family
ID=38021189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620100434 Expired - Fee Related CN2890526Y (en) | 2006-01-13 | 2006-01-13 | Limit telescopic butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2890526Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603994A (en) * | 2013-11-29 | 2014-02-26 | 天津祥嘉流体控制系统有限公司 | Double-eccentric ultralow temperature butterfly valve |
| CN107620802A (en) * | 2017-09-06 | 2018-01-23 | 胜利阀门有限公司 | A kind of soft tube stretches butterfly valve |
| CN108518490A (en) * | 2018-05-10 | 2018-09-11 | 江南阀门有限公司 | A kind of low flow resistance butterfly valve of split type shock resistance |
| CN110388472A (en) * | 2019-07-08 | 2019-10-29 | 英诺威阀业有限公司 | Flexible butterfly valve |
-
2006
- 2006-01-13 CN CN 200620100434 patent/CN2890526Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603994A (en) * | 2013-11-29 | 2014-02-26 | 天津祥嘉流体控制系统有限公司 | Double-eccentric ultralow temperature butterfly valve |
| CN103603994B (en) * | 2013-11-29 | 2016-06-29 | 天津祥嘉流体控制系统有限公司 | A kind of double-eccentric ultralow temperature butterfly valve |
| CN107620802A (en) * | 2017-09-06 | 2018-01-23 | 胜利阀门有限公司 | A kind of soft tube stretches butterfly valve |
| CN107620802B (en) * | 2017-09-06 | 2023-08-08 | 胜利阀门有限公司 | Flexible rotary pipe telescopic butterfly valve |
| CN108518490A (en) * | 2018-05-10 | 2018-09-11 | 江南阀门有限公司 | A kind of low flow resistance butterfly valve of split type shock resistance |
| CN110388472A (en) * | 2019-07-08 | 2019-10-29 | 英诺威阀业有限公司 | Flexible butterfly valve |
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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: 20070418 Termination date: 20140113 |