CN209671794U - Resistant to bending helical bellows - Google Patents
Resistant to bending helical bellows Download PDFInfo
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- CN209671794U CN209671794U CN201920243371.0U CN201920243371U CN209671794U CN 209671794 U CN209671794 U CN 209671794U CN 201920243371 U CN201920243371 U CN 201920243371U CN 209671794 U CN209671794 U CN 209671794U
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Abstract
The utility model relates to pipe material field, in particular to a kind of resistant to bending helical bellows.Profile including in axial direction spiral winding and the adhesive-layer between the adjacent wall for the profile being adhered to after spiral winding, the section of the profile is in U shape, the junction of the U shape is all made of fillet and carries out transition, the depth of section of the profile is 0.75~1.3 times of the cross-sectional width of profile, and the inside diameter of bel is 10~16 times of the depth of section of profile.The purpose of this utility model is to provide a kind of resistant to bending helical bellows, the bellows is formed using profile spiral winding, the section of profile is in U shape, the groove of U shape and bottom is unmelted is combined, so that tubing has excellent buckling performance, it is suitable for bending right and left for complicated landform, furthermore U shape section makes tubing have stronger shock resistance, extends the service life of tubing.
Description
Technical field
The utility model relates to pipe material field, in particular to a kind of resistant to bending helical bellows.
Background technique
The tubing in draining sewage pipe field is generally HDPE double-wall corrugated pipe or common HDPE Hollow wall tube etc. at present, but
HDPE double-wall corrugated pipe haves the shortcomings that as follows: 1, HDPE double-wall corrugated pipe material is softer, and bending modulus is low, is less than 800MPa,
Bending resistance is poor, and pipe ring stiffness is relatively low, generally 8KN/m2；2, tubing ring is flexible poor, and it is left to be generally depressed into caliber 30%
Rupture is generated when the deflection on the right side.Common HDPE Hollow wall tube haves the shortcomings that as follows: 1, tubing is by a prefabricated solid wall type
Material is reheated to be stitched together by adhesive, and solid wall profile is cold conditions, though reheated, weld strength is still poor, Yi Yin
This causes tubing longitudinal fracture, while therefore reason, and the bending residual stress of the solid wall profile of cold conditions is larger, in the tubing later period
Storage is carried, in installation and use process, is easy to produce stress release when by external force, so that pipe failure is caused, and because
For stress problem, also it is unfavorable for the Long Service Life of tubing；2, tubing ring is flexible poor, is generally depressed into caliber 30% or so
Rupture is generated when deflection.
Utility model content
The purpose of the utility model is to overcome disadvantage mentioned above, provide a kind of resistant to bending helical bellows, the bellows
It is formed using profile spiral winding, the section of profile is in U shape, the groove of U shape and bottom is unmelted is combined, and is made
Obtaining tubing has excellent buckling performance, is suitable for bending right and left for complicated landform, furthermore U shape section makes
Tubing has stronger shock resistance, extends the service life of tubing.
The utility model is realized in this way: a kind of resistant to bending helical bellows, it is characterised in that: including along axial side
Profile to spiral winding and the adhesive-layer that is adhered between the adjacent wall of the profile after spiral winding, the profile are cut
Face is in U shape, and the junction of the U shape is all made of fillet and carries out transition, and the depth of section of the profile is profile
0.75~1.3 times of cross-sectional width, the inside diameter of bel is 10~16 times of the depth of section of profile.
Preferably, the wall thickness of the profile be 2~10mm, the adhesive-layer with a thickness of 2~10mm.
Preferably, the profile is made of polyethylene, and the adhesive-layer is made of maleic anhydride grafted polyethylene.
Preferably, the depth of section of the profile is 1.2~1.6 of the depth of groove in the U shape section of profile
Times.
Preferably, the angle of the U shape section further groove two sidewalls of the profile is 5 °~18 °.
Preferably, the cross-sectional width of the profile is 1.8~2 times of the recess width in the U shape section of profile.
For the prior art, the utility model is had the advantage that
(1) resistant to bending helical bellows provided by the utility model, are formed using profile spiral winding, the section of profile
In U shape, the groove of U shape and bottom is unmelted is combined, so that tubing has excellent buckling performance, more
Bending right and left for complicated landform is adapted to, furthermore U shape section makes tubing have stronger shock resistance, extends
The service life of tubing；
(2) resistant to bending helical bellows provided by the utility model, the groove of profile and two vertical sidewall structures of profile
At the circumferential compression-resistant structure of tubing, make tubing that there is excellent and uniform compressive property, more existing common ripple struction pipe
Material has apparent structural advantage；
(3) resistant to bending helical bellows provided by the utility model, bending modulus are 800~1000MPa, tensile strength
>=20MPa, elongation percentage are greater than 500%, hence it is evident that are better than existing tubing.
Detailed description of the invention
The utility model is described in further detail in conjunction with the embodiments with reference to the accompanying drawings:
Fig. 1 is the structural schematic diagram of the resistant to bending helical bellows of the utility model；
Fig. 2 is the schematic diagram in profile section.
Symbol description in figure: 1, profile, 2, adhesive-layer, the depth of section of h, profile, the cross-sectional width of b, profile, d, ripple
Bore, t, depth of groove, the angle of a, groove two sidewalls, the width of w, groove.
Specific embodiment
The content of the present invention is described in detail with specific embodiment with reference to the accompanying drawings of the specification:
It as Figure 1-Figure 2, is a kind of resistant to bending helical bellows provided by the utility model, it is characterised in that: packet
Include the profile 1 of in axial direction spiral winding and the adjacent wall of profile 1 that is adhered to after spiral winding between adhesive-layer
2, the section of the profile 1 is in U shape, and the junction of the U shape is all made of fillet and carries out transition, the profile 1
Depth of section h be 0.75~1.3 times of cross-sectional width b of profile 1, the inside diameter of bel d is the depth of section h of profile 1
10~16 times.
Preferably, the wall thickness of the profile 1 be 2~10mm, the adhesive-layer 2 with a thickness of 2~10mm.
Preferably, the profile 1 is made of polyethylene, and the adhesive-layer 2 is made of maleic anhydride grafted polyethylene.
Preferably, the depth of section h of the profile 1 be profile 1 U shape section in depth of groove t 1.2~
1.6 again.
Preferably, the angle a of the U shape section further groove two sidewalls of the profile 1 is 5 °~18 °.
Preferably, the cross-sectional width b of the profile 1 is 1.8~2 of the recess width w in the U shape section of profile 1
Times.Recess width w is subject to the center of depth of groove.
Table 1: the performance comparison table of the utility model tubing and existing tubing
As can be seen from the table, the ring stiffness of the utility model tubing and buckling performance are superior to existing tubing,
It is suitable for bending right and left for complicated landform, tubing service life is long.
Above-mentioned specific embodiment is only explained in detail the technical solution of the utility model, and the utility model is not
It is only limited only to above-described embodiment, all any improvement or replacement according to the utility model principle should all be practical new at this
Within the protection scope of type.
Claims (6)
1. a kind of resistant to bending helical bellows, it is characterised in that: profile (1) including in axial direction spiral winding and viscous
Adhesive-layer (2) between the adjacent wall of profile (1) after being connected to spiral winding, the section of the profile (1) are in U shape,
The junction of the U shape is all made of fillet and carries out transition, and the depth of section (h) of the profile (1) is cutting for profile (1)
0.75~1.3 times of face width (b), the inside diameter of bel (d) are 10~16 times of the depth of section (h) of profile (1).
2. resistant to bending helical bellows according to claim 1, it is characterised in that: the wall thickness of the profile (1) be 2~
10mm, the adhesive-layer (2) with a thickness of 2~10mm.
3. resistant to bending helical bellows according to claim 1, it is characterised in that: the profile (1) uses polyethylene
It is made, the adhesive-layer (2) is made of maleic anhydride grafted polyethylene.
4. resistant to bending helical bellows according to claim 1, it is characterised in that: the depth of section of the profile (1)
It (h) is 1.2~1.6 times of the depth of groove (t) in the U shape section of profile (1).
5. resistant to bending helical bellows according to claim 1, it is characterised in that: the U shape of the profile (1)
The angle (a) of section further groove two sidewalls is 5 °~18 °.
6. resistant to bending helical bellows according to claim 1, it is characterised in that: the cross-sectional width of the profile (1)
It (b) is 1.8~2 times of the recess width (w) in the U shape section of profile (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920243371.0U CN209671794U (en) | 2019-02-26 | 2019-02-26 | Resistant to bending helical bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920243371.0U CN209671794U (en) | 2019-02-26 | 2019-02-26 | Resistant to bending helical bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209671794U true CN209671794U (en) | 2019-11-22 |
Family
ID=68569949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920243371.0U Active CN209671794U (en) | 2019-02-26 | 2019-02-26 | Resistant to bending helical bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209671794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706721A (en) * | 2020-07-10 | 2020-09-25 | 四川民生管业有限责任公司 | Hollow wall stainless steel large diameter pipeline and manufacturing method thereof |
-
2019
- 2019-02-26 CN CN201920243371.0U patent/CN209671794U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706721A (en) * | 2020-07-10 | 2020-09-25 | 四川民生管业有限责任公司 | Hollow wall stainless steel large diameter pipeline and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Anti bending spiral bellows Effective date of registration: 20220517 Granted publication date: 20191122 Pledgee: Huangshong branch of rural credit cooperative association of Pingba District, Anshun City Pledgor: KANGMINGYUAN (GUIZHOU) TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022980005699 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220915 Granted publication date: 20191122 Pledgee: Huangshong branch of rural credit cooperative association of Pingba District, Anshun City Pledgor: KANGMINGYUAN (GUIZHOU) TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022980005699 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Anti bending spiral corrugated pipe Effective date of registration: 20220926 Granted publication date: 20191122 Pledgee: Huangshong branch of rural credit cooperative association of Pingba District, Anshun City Pledgor: KANGMINGYUAN (GUIZHOU) TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022450000160 |