CN219775044U - Bellows with internal and external double seals - Google Patents
Bellows with internal and external double seals Download PDFInfo
- Publication number
- CN219775044U CN219775044U CN202320888677.8U CN202320888677U CN219775044U CN 219775044 U CN219775044 U CN 219775044U CN 202320888677 U CN202320888677 U CN 202320888677U CN 219775044 U CN219775044 U CN 219775044U
- Authority
- CN
- China
- Prior art keywords
- tube
- pipe
- corrugated
- bellows
- sliding connection
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000009977 dual effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000008602 contraction Effects 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Joints Allowing Movement (AREA)
Abstract
The utility model provides an inner and outer double-seal corrugated pipe, which comprises a corrugated pipe body, an inner pipe and an outer pipe, wherein the corrugated pipe body is composed of a middle corrugated expansion part and end pipes integrally formed at two ends of the corrugated expansion part, the outer pipe is sleeved outside the corrugated pipe body, at least one end of the outer pipe is in sealing sliding connection with the corrugated pipe body, the inner pipe is sleeved inside the corrugated pipe body, one end of the inner pipe is provided with an outwards-expanding guide cover, the end part of the guide cover extends to the port of one end pipe and is fixedly connected with the other end of the inner pipe, one end of the outer pipe is fixedly connected with the end pipe of the corrugated pipe body, the other end of the outer pipe is in sealing sliding connection with the end pipe of the corrugated pipe body, the sliding connection end of the outer pipe is provided with an inner annular edge which extends inwards in a radial direction, and the end pipe on the corresponding side is provided with an inwards-concave and axially-extending outer annular groove.
Description
Technical Field
The utility model relates to a corrugated pipe, in particular to an inner-outer double-seal corrugated pipe.
Background
The high-density polyethylene (HDPE) double-wall corrugated pipe is a novel pipe with an outer wall and a smooth inner wall with a ring structure, and was first developed in Germany in the early 80 s. Over ten years of development and perfection, a single variety has evolved into a complete product line. At present, the production process and the use technology are mature. Because of its excellent performance and relatively economical cost, it has been greatly popularized and applied in developed countries such as europe and america. In China, popularization and application of HDPE double-wall corrugated pipes are in an ascending state, and all technical indexes reach the use standard.
In the prior art, in order to improve the leakproofness of bellows, the outer tube and the inner tube are arranged at the inner end and the outer end of the bellows in the market, the inner tube forms a water flow channel, thereby realize the inside and outside bidirectional seal to the bellows through the inner tube and the outer tube, the double seal bellows is when using, rivers get into by the entrance point of bellows, flow out by the exit point, in the prior art, because the tip of inner tube radially outwards extends and forms annular flange, form the step between this annular flange and the bellows, when rivers get into the inner tube by the outside, the step that annular flange formed influences, can increase the rivers resistance, result in the body to advance the water end and appear great impact force, make inner tube and bellows be located entrance point department and receive the influence of rivers striking easily, thereby cause the pipe wall damage of water end department.
Disclosure of Invention
Accordingly, in view of the above-mentioned problems, the present utility model proposes a bellows with inner and outer double seals.
In order to achieve the technical problems, the corrugated pipe with double sealing inside and outside comprises a corrugated pipe body, an inner pipe and an outer pipe, wherein the corrugated pipe body is composed of a middle corrugated expansion part and end pipes integrally formed at two ends of the corrugated expansion part, the outer pipe is sleeved with the outside of the corrugated pipe body, at least one end of the outer pipe is in sealing sliding connection with the corrugated pipe body, the inner pipe is sleeved inside the corrugated pipe body, one end of the inner pipe is provided with a guide cover with an outward expanding diameter, the end part of the guide cover extends to the end part of one end pipe and is fixedly connected with the end part of the other end pipe, and the other end of the inner pipe is in sealing sliding connection with the other end pipe.
The further improvement is that: one end of the outer tube is fixedly connected with the end tube of the corrugated tube body, and the other end of the outer tube is in sealing sliding connection with the end tube of the corrugated tube body.
The further improvement is that: both ends of the outer tube are in sealing sliding connection with the end tube of the corrugated tube body.
The further improvement is that: the sliding connection end of the outer tube is provided with an inner annular edge extending radially inwards, an outer annular groove which is concave inwards and extends axially is formed in the end tube on the corresponding side, the inner annular edge is embedded into the outer annular groove, the inner wall of the inner annular edge is in clearance fit with the annular groove wall of the outer annular groove, the two ends of the inner annular edge are fixedly provided with first ripple sealing sleeves, and the other ends of the first ripple sealing sleeves are fixedly connected with the end wall of the outer annular groove.
The further improvement is that: the sliding connection end of the inner pipe is provided with an outer ring edge extending radially outwards, an inner ring groove which is concave inwards and extends axially is formed in the end pipe on the corresponding side, the outer ring edge is embedded into the inner ring groove, the inner wall of the outer ring edge is in clearance fit with the annular groove wall of the inner ring groove, two ends of the outer ring edge are fixedly provided with second ripple sealing sleeves, and the other ends of the second ripple sealing sleeves are fixedly connected with the end wall of the inner ring groove.
The further improvement is that: the inner ring groove and the outer ring groove should have the same length.
The further improvement is that: the end pipe is provided with a flange.
By adopting the technical scheme, the utility model has the beneficial effects that:
the utility model discloses an inside and outside dual sealed's bellows establishes the outer tube through the outer pot head at the bellows body, and the at least one end of outer tube and the sealed sliding connection of the end pipe of bellows body, and the inner tube pot head is established in the bellows body, and the one end of inner tube is provided with the kuppe of outside expanded diameter, and the tip of kuppe extends to the port department and the fixed connection of one of them end pipe, the other end of inner tube and another the sealed sliding connection of end pipe to realize the inside and outside two-way seal of bellows body, will have the one end of kuppe to install at the water direction, in the water flow channel that gets into the inner tube after the kuppe carries out the inclined plane water conservancy diversion to can make the step that produces after eliminating reducing between bellows body and the inner tube, make rivers steadily transition to the inner tube, reduce the resistance that rivers received at the water inlet end, reduce inner tube water pressure impact, this kuppe directly extends to the port department of end pipe, thereby directly avoids the end pipe and the rivers contact of end bellows body, eliminates the impact of water inlet end side pipe, thereby improves life.
Drawings
FIG. 1 is a schematic view of the structure of a bellows with double seals inside and outside an embodiment of the present utility model.
FIG. 2 is a schematic view of the structure of an inner tube in a bellows with double sealing inside and outside according to an embodiment of the present utility model.
FIG. 3 is a cross-sectional view of an inner tube in a bellows with dual seals inside and outside an embodiment of the present utility model.
In the figure: the corrugated pipe comprises a corrugated pipe body 1, an end pipe 11, an outer ring groove 12 and an inner ring groove 13; an outer tube 2, an inner rim 21, a first corrugated sealing sleeve 22; an inner tube 3, a guide cover 31, an outer annular rim 32 and a second corrugated sealing sleeve 33.
Detailed Description
The utility model will now be further described with reference to the drawings and specific examples.
Examples
Referring to fig. 1-3, the embodiment of the utility model discloses an inner and outer double-seal corrugated pipe, which comprises a corrugated pipe body 1, an inner pipe 3 and an outer pipe 2, wherein the corrugated pipe body 1 is composed of a middle corrugated expansion part and end pipes 11 integrally formed at two ends of the corrugated expansion part, the two end pipes 11 are provided with flanges for connecting an outer pipe body, and axial expansion and contraction are realized between the two end pipes 11 through the corrugated expansion part so as to buffer impact pressure from a pipeline system.
The outer tube 2 is sealed and sleeved outside the corrugated tube body 1, and at least one end of the outer tube 2 is in sealing sliding connection with the corrugated tube body 1. For example, in one embodiment, one end of the outer tube 2 is fixedly connected with the end tube 11 of the corrugated tube body 1, and the other end is in sealing sliding connection with the end tube 11 of the corrugated tube body 1; for another example, in another embodiment, both ends of the outer tube 2 are in sealing sliding connection with the end tubes 11 of the bellows body 1, and both the above two embodiments can achieve the effect that the outer tube 2 and the bellows slide in sealing without affecting the expansion and contraction between the two end tubes 11. It should be noted that in the second embodiment, that is, both ends of the outer tube 2 are in sealing sliding connection with the end tubes 11 of the bellows body 1, the expansion and contraction ranges of both the end tubes 11 can be made larger than in the first embodiment. However, the first embodiment has a fixed end and a simpler structure in a sliding and sealing manner, so that the first embodiment can be selected according to practical requirements.
In this embodiment, specifically, the sliding connection end of the outer tube 2 has an inner ring edge 21 extending radially inward, the end tube 11 on the corresponding side is provided with an outer ring groove 12 recessed inward and extending axially, the inner ring edge 21 is embedded into the outer ring groove 12, and the inner wall of the inner ring edge 21 is in clearance fit with the circumferential groove wall of the outer ring groove 12, so that the end tube 11 and the outer tube 2 slide relatively, two ends of the inner ring edge 21 are fixedly provided with first corrugated sealing sleeves 22, the first corrugated sealing sleeves 22 are in a corrugated tubular structure, and the other ends of the first corrugated sealing sleeves 22 are fixedly connected with the end wall of the outer ring groove 12. By the provision of the first corrugated sealing sleeve 22, sealing of the sliding end of the outer tube 2 is achieved.
In this embodiment, the inner tube 3 is sleeved inside the bellows body 1, one end of the inner tube 3 is provided with a flared air guide sleeve 31, the end of the air guide sleeve 31 extends to the port of one of the end tubes 11 and is fixedly connected, and the other end of the inner tube 3 is in sealed sliding connection with the other end tube 11. The one end that has kuppe 31 is regarded as the entrance point of the utility model discloses a bellows, will the utility model discloses a bellows is installed with external pipeline, will have the one end of kuppe 31 and install in the direction of coming water, this loudspeaker form kuppe 31 carries out the inclined plane water conservancy diversion back to coming water and gets into the water flow path of inner tube 3, thereby can make the step that produces after the reducing between eliminating bellows body 1 and inner tube 3, make rivers steady transition to inner tube 3, reduce the resistance that rivers received at the end of intaking, reduce inner tube 3 end hydraulic pressure impact that intakes, this kuppe 31 directly extends to the port department of end pipe 11, thereby directly avoid the end pipe 11 of end bellows body 1 to contact with rivers, eliminate the impact of end pipe 11 on one side of intaking, thereby improve life.
In this embodiment, specifically, the sliding connection end of the inner tube 3 has an outer ring edge 32 extending radially outwards, the end tube 11 on the corresponding side is provided with an inner ring groove 13 recessed inwards and extending axially, the outer ring edge 32 is embedded into the inner ring groove 13, and the inner wall of the outer ring edge 32 is in clearance fit with the circumferential groove wall of the inner ring groove 13, so that the end tube 11 and the inner tube 3 slide relatively, two ends of the outer ring edge 32 are fixedly provided with second corrugated sealing sleeves 33, the second corrugated sealing sleeves 33 are also in a corrugated tubular structure, and the other ends of the second corrugated sealing sleeves 33 are fixedly connected with the end wall of the inner ring groove 13. By the provision of the second corrugated sealing sleeve 33, sealing of the sliding end of the outer tube 2 is achieved.
It should be noted that the lengths of the inner ring groove 13 and the outer ring groove 12 should be equal to ensure that the expansion range between the end pipes 11 is not limited, for example, when only one end of the outer pipe 2 is a sliding connection end, only one outer ring groove 12 is provided, and at this time, the lengths of the outer ring groove 12 and the inner ring groove 13 are the same. When both ends of the outer tube 2 are sliding connection ends, two outer ring grooves 12 are arranged, and at the moment, the length of the inner ring groove 13 is equal to the sum of the lengths of the two outer ring grooves 12, so that the end tube 11 is ensured to stretch normally.
Modifications and variations made by the subject matter are intended to be within the scope of the claims and are not limited to the embodiments disclosed.
Claims (7)
1. The utility model provides a bellows of inside and outside dual seal, includes bellows body, inner tube and outer tube, the bellows body comprises the bellows expansion portion in the middle and integrated into one piece at the end pipe at bellows expansion portion both ends, its characterized in that: the outer tube sealing sleeve is arranged outside the corrugated tube body, at least one end of the outer tube is in sealing sliding connection with the corrugated tube body, the inner tube is sleeved inside the corrugated tube body, one end of the inner tube is provided with a guide cover with an outward expanding diameter, the end part of the guide cover extends to the port of one end tube and is fixedly connected, and the other end of the inner tube is in sealing sliding connection with the other end tube.
2. The internally and externally double sealed bellows according to claim 1, characterized in that: one end of the outer tube is fixedly connected with the end tube of the corrugated tube body, and the other end of the outer tube is in sealing sliding connection with the end tube of the corrugated tube body.
3. The internally and externally double sealed bellows according to claim 1, characterized in that: both ends of the outer tube are in sealing sliding connection with the end tube of the corrugated tube body.
4. A bellows with inner and outer double seals according to any one of claims 1-3, characterized in that: the sliding connection end of the outer tube is provided with an inner annular edge extending radially inwards, an outer annular groove which is concave inwards and extends axially is formed in the end tube on the corresponding side, the inner annular edge is embedded into the outer annular groove, the inner wall of the inner annular edge is in clearance fit with the annular groove wall of the outer annular groove, the two ends of the inner annular edge are fixedly provided with first ripple sealing sleeves, and the other ends of the first ripple sealing sleeves are fixedly connected with the end wall of the outer annular groove.
5. The internally and externally double sealed bellows according to claim 4, characterized in that: the sliding connection end of the inner pipe is provided with an outer ring edge extending radially outwards, an inner ring groove which is concave inwards and extends axially is formed in the end pipe on the corresponding side, the outer ring edge is embedded into the inner ring groove, the inner wall of the outer ring edge is in clearance fit with the annular groove wall of the inner ring groove, two ends of the outer ring edge are fixedly provided with second ripple sealing sleeves, and the other ends of the second ripple sealing sleeves are fixedly connected with the end wall of the inner ring groove.
6. The internally and externally double sealed bellows according to claim 5, characterized in that: the inner ring groove and the outer ring groove should have the same length.
7. The internally and externally double sealed bellows according to claim 1, characterized in that: the end pipe is provided with a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320888677.8U CN219775044U (en) | 2023-04-19 | 2023-04-19 | Bellows with internal and external double seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320888677.8U CN219775044U (en) | 2023-04-19 | 2023-04-19 | Bellows with internal and external double seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219775044U true CN219775044U (en) | 2023-09-29 |
Family
ID=88130614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320888677.8U Active CN219775044U (en) | 2023-04-19 | 2023-04-19 | Bellows with internal and external double seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219775044U (en) |
-
2023
- 2023-04-19 CN CN202320888677.8U patent/CN219775044U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213394002U (en) | Steel pipe flange | |
| CN219775044U (en) | Bellows with internal and external double seals | |
| CN110259943B (en) | Pressure vessel with composite structure | |
| CN219159788U (en) | High-tightness rotary joint | |
| CN208793890U (en) | A kind of high-temperature expansion joint | |
| CN205065156U (en) | Telescopic joint | |
| CN210122931U (en) | Exhaust manifold connection structure | |
| CN210861157U (en) | Universal smoke exhaust pipe | |
| CN205118523U (en) | Full latus rectum top income formula pipe joint | |
| CN208634602U (en) | A kind of novel fast intubation attachment device | |
| CN202812618U (en) | Reducing nipple of plastic pipe | |
| CN220506131U (en) | Throttling connection sealing structure of carat pipe | |
| CN213452187U (en) | Flexible sealing self-locking connecting structure of drain pipe | |
| CN216045888U (en) | MPP pipe with quick connect function | |
| CN213271322U (en) | Expansion joint for valve pipeline connection | |
| CN220930511U (en) | Butt-joint double-wall corrugated pipe | |
| CN220102420U (en) | Anti-drop double-wall corrugated pipe connection structure | |
| CN108131520B (en) | Intermediate joint for flexible composite pipe | |
| CN2504473Y (en) | Connection joint of metal tube and plastic tube | |
| CN219493404U (en) | High-tightness flexible joint | |
| CN204922313U (en) | Full latus rectum fire hose belt lacing | |
| CN204942802U (en) | Metallic hose assembly and there is the linkage structure of this metallic hose assembly | |
| CN216843517U (en) | Anti-leakage oxygen pipeline for medical vehicle | |
| CN212509885U (en) | Three-shoulder anti-thread gluing pipe body airtight connection hoop-free connector | |
| CN221097804U (en) | Pipeline and tube well subassembly convenient to installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |