CN203258278U - Poly tetra fluoro ethylene and rubber composite bellows compensator - Google Patents
Poly tetra fluoro ethylene and rubber composite bellows compensator Download PDFInfo
- Publication number
- CN203258278U CN203258278U CN 201320152393 CN201320152393U CN203258278U CN 203258278 U CN203258278 U CN 203258278U CN 201320152393 CN201320152393 CN 201320152393 CN 201320152393 U CN201320152393 U CN 201320152393U CN 203258278 U CN203258278 U CN 203258278U
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- bellows
- tetrafluoro
- fluoro ethylene
- tetra fluoro
- poly tetra
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Abstract
The utility model discloses a poly tetra fluoro ethylene and rubber composite bellows compensator which comprises a flange, a bellows, a poly tetra fluoro ethylene inner lining and a rubber outer lining. The bellows is fixedly connected with the two ends of the flange to form a bellows compensation structure. The poly tetra fluoro ethylene inner lining is attached to the inner surface of the bellows. The rubber outer lining is attached to the outer wall of the bellows. According to the further improvement, an elastic negative pressure ring is arranged in an inner wall ring groove of the bellows and is a ring-like component in small clearance fit with the poly tetra fluoro ethylene inner lining in the inner wall ring groove of the bellows, the negative pressure ring is composed of a loop formed by enclosure of a spring metal wire, and a poly tetra fluoro ethylene outer lining coating the loop, and the loop is formed by enclosure of the spring steel wire. The poly tetra fluoro ethylene and rubber composite bellows compensator has a composite bellows structure and can remarkably reduce abrasion of the bellows, and the service life of the bellows compensator is prolonged remarkably. Under the effect of negative pressure, the poly tetra fluoro ethylene inner lining does not deform, and therefore the bellows compensator can be used normally.
Description
Technical field
The utility model relates to a kind of pipe safety equipment, specifically, relates to a kind of lining tetrafluoro corrugated expansion joint.
Background technique
The lining tetrafluoro corrugated expansion joint of prior art comprises flange, bellows, tetrafluoro liner, and bellows is fixedly connected with the flange at two ends, consists of the bellows collocation structure, and the tetrafluoro liner is fitted in bellows inside surface.This lining tetrafluoro corrugated expansion joint can not only be used for pipe-line system, play length, temperature, position and angle compensation effect, and owing to its liner tetrafluoro, so that it has again preferably corrosion resistance, can be widely used in the pipe-line system of carrying Korrosionsmedium.But when this lining tetrafluoro corrugated expansion joint used in poor environment, bellows was subject to the wearing and tearing of blown sand, debris flow etc., because bellows is thin-wall part, bellows is easy to worn out and lost efficacy, and corrugated expansion joint is short working life.
The model utility content
The utility model is for the deficiencies in the prior art, and a kind of remarkable minimizing bellows wearing and tearing are provided, tetrafluoro, the rubber combined formula corrugated expansion joint in significant prolongation corrugated expansion joint working life.
The utility model is achieved through the following technical solutions technical goal.
Tetrafluoro, rubber combined formula corrugated expansion joint comprise flange, bellows, tetrafluoro liner; Described bellows is fixedly connected with the flange at two ends, consists of the bellows collocation structure; Described tetrafluoro liner is fitted in bellows inside surface; Its improvements are: also comprise the rubber outer lining; Described rubber outer lining is fitted in the bellows outer wall.
The utility model further improves and is: be provided with the elastic negative pressure ring in bellows inwall annular groove; Described negative pressure ring is circular member, and little Spielpassung between the tetrafluoro liner in the bellows inwall annular groove.
The utility model further improves and is: the ring that described negative pressure ring is surrounded by elastic metallic yarn, the tetrafluoro outer lining that is coated on the ring form.
The utility model further improves and is: described ring is surrounded by Spring Steel Wire.
The utility model compared with prior art has following good effect:
1, bellows inside surface tetrafluoro liner, outer wall applying rubber outer lining forms composite protection layer, so that bellows has preferably wear resistance, significant prolongation corrugated expansion joint working life.
2, in the bellows annular groove, be provided with the elastic negative pressure ring, push down the tetrafluoro liner by the negative pressure ring, like this, even the tetrafluoro liner can not be out of shape under suction function, thereby guaranteed the normal use of corrugated expansion joint.
3, the ring outer wall of negative pressure ring is coated with the tetrafluoro outer lining, has increased layer protective layer between negative pressure ring and tetrafluoro liner, the working life of significant prolongation lining tetrafluoro expansion joint.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the local enlarged diagram of I part among Fig. 1.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and in conjunction with the embodiments for the below.
Tetrafluoro shown in the drawings, rubber combined formula corrugated expansion joint comprise flange 1, bellows 2, tetrafluoro liner 3, rubber outer lining 5; Bellows 2 is fixedly connected with the flange 1 at two ends, consists of the bellows collocation structure; Tetrafluoro liner 3 is fitted in bellows 2 internal surfaces; Rubber outer lining 5 is fitted in bellows 2 outer walls.
In order to make the tetrafluoro liner indeformable under suction function, in bellows 2 inwall annular grooves, be provided with elastic negative pressure ring 4; Negative pressure ring 4 is circular member, and little Spielpassung between the tetrafluoro liner 3 in the bellows 2 inwall annular grooves; In the present embodiment, the ring 4.2 that negative pressure ring 4 is surrounded by elastic metallic yarn, the tetrafluoro outer lining 4.1 that is coated on the ring 4.2 form; Ring 4.2 is surrounded by Spring Steel Wire.
Claims (4)
1. a tetrafluoro, rubber combined formula corrugated expansion joint comprise flange (1), bellows (2), tetrafluoro liner (3); Described bellows (2) is fixedly connected with the flange (1) at two ends, consists of the bellows collocation structure; Described tetrafluoro liner (3) is fitted in bellows (2) internal surface; It is characterized in that: also comprise rubber outer lining (5); Described rubber outer lining (5) is fitted in bellows (2) outer wall.
2. tetrafluoro according to claim 1, rubber combined formula corrugated expansion joint is characterized in that: be provided with elastic negative pressure ring (4) in bellows (2) inwall annular groove; Described negative pressure ring (4) is circular member, and little Spielpassung between the interior tetrafluoro liner (3) of bellows (2) inwall annular groove.
3. tetrafluoro according to claim 2, rubber combined formula corrugated expansion joint, it is characterized in that: the ring (4.2) that described negative pressure ring (4) is surrounded by elastic metallic yarn, the tetrafluoro outer lining (4.1) that is coated on the ring (4.2) form.
4. tetrafluoro according to claim 3, rubber combined formula corrugated expansion joint, it is characterized in that: described ring (4.2) is surrounded by Spring Steel Wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152393 CN203258278U (en) | 2013-03-30 | 2013-03-30 | Poly tetra fluoro ethylene and rubber composite bellows compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152393 CN203258278U (en) | 2013-03-30 | 2013-03-30 | Poly tetra fluoro ethylene and rubber composite bellows compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203258278U true CN203258278U (en) | 2013-10-30 |
Family
ID=49470841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320152393 Expired - Fee Related CN203258278U (en) | 2013-03-30 | 2013-03-30 | Poly tetra fluoro ethylene and rubber composite bellows compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203258278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100795A (en) * | 2014-07-01 | 2014-10-15 | 江苏大力城电气有限公司 | Corrugated pipe special for corrugated expansion joint |
-
2013
- 2013-03-30 CN CN 201320152393 patent/CN203258278U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100795A (en) * | 2014-07-01 | 2014-10-15 | 江苏大力城电气有限公司 | Corrugated pipe special for corrugated expansion joint |
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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: 20131030 Termination date: 20140330 |