CN211715958U

CN211715958U - Sandwich corrugated pipe

Info

Publication number: CN211715958U
Application number: CN202020126329.3U
Authority: CN
Inventors: 阮洪良; 严绍彬; 陈铠
Original assignee: ZHEJIANG RUAN'S PLASTIC INDUSTRY CO LTD
Current assignee: ZHEJIANG RUAN'S PLASTIC INDUSTRY CO LTD
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-10-20
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to the technical field of plastic pipelines, in particular to a sandwich corrugated pipe, which comprises an outer pipe, a corrugated part and an inner pipe, wherein the inner wall of the outer pipe is provided with the corrugated part, the lower surface of the corrugated part is fixedly connected with a protection part, the lower surface of the protection part is fixedly connected with the inner pipe, the upper surface of the corrugated part is fixedly connected with a corrugated interlayer, the top of the corrugated interlayer is fixedly connected with the inner wall of the outer pipe, the protection part comprises a connecting layer, an anti-permeation layer, a reinforcing layer and a steel mesh layer, the sandwich corrugated pipe can make the outer wall of the pipeline smooth and can make the middle part of the pipeline have the buffer characteristic through the structure set between the outer pipe and the inner pipe, thereby effectively reducing the effect of uneven stress when the pipeline is buried, greatly improving the effect of resisting the external force impact of the pipeline and effectively improving the, the problem that the channel wave crest is easy to collapse is effectively reduced.

Description

Sandwich corrugated pipe

Technical Field

The utility model relates to a plastic conduit technical field specifically is a press from both sides core bellows.

Background

Plastic tubing is a generic term for pipes made of plastic materials. The plastic pipeline has the characteristics of light dead weight, sanitation, safety, small water flow resistance, energy conservation, metal conservation, improvement on living environment, long service life, safety, convenience and the like, and is favored by the pipeline engineering industry. In nearly 10 years, plastic pipelines in China are subject to high-speed development under the background of great development of chemical building materials under the pulling of rapid development of Chinese macroscopic economy. In 2010, the national plastic pipeline yield exceeds 800 ten thousand tons, wherein the Guangdong, Zhejiang and Shandong account for 42 percent of the yield. Plastic conduit all possesses more advantage in a plurality of fields traditional metal pipe, concrete pipe relatively, along with a series of water conservation, the policy of pollution control environmental protection is gone out, this provides the space in market for the plastic conduit of heavy-calibre popularizes and applies, and plastic conduit replaces traditional pipeline gradually, is widely applied to each field, has many kinds of plastic conduit in the market, and wherein the bellows is exactly one kind now comparatively common buried drain pipe. Most pipelines in the market are in a wave form, the pipelines are easily stressed unevenly when buried underground, the pipelines restore to the original shape generally when being impacted by external force, and the wave crests collapse easily due to small wave crest width. In view of this, we propose a sandwich corrugated pipe.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a press from both sides core bellows.

The utility model discloses a realize that the technical scheme who takes of above-mentioned purpose does:

the sandwich corrugated pipe comprises an outer pipe, a corrugated piece and an inner pipe, wherein the corrugated piece is arranged on the inner wall of the outer pipe, a protection piece is fixedly connected to the lower surface of the corrugated piece, the inner pipe is fixedly connected to the lower surface of the protection piece, a corrugated interlayer is fixedly connected to the upper surface of the corrugated piece, and the top of the corrugated interlayer is fixedly connected to the inner wall of the outer pipe.

Preferably, the protection piece comprises a connecting layer, an anti-permeation layer, a reinforcing layer and a steel mesh layer, wherein the lower surface of the connecting layer is fixedly connected to the outer surface of the inner pipe, and the upper surface of the connecting layer is in contact with the lower surface of the anti-permeation layer.

Preferably, the upper surface of the anti-permeation layer is in contact with the lower surface of the reinforcing layer, a steel mesh layer is embedded in the upper surface of the reinforcing layer, the upper surface of the steel mesh layer is in contact with the lower surface of the sealing layer, and the waterproof layer is uniformly coated on the upper surface of the sealing layer.

Preferably, the waterproof layer is one of a perfluoro-six-carbon waterproof agent or a perfluoro-four-carbon waterproof agent, and the reinforcing layer is formed by spirally winding ultrahigh molecular weight polyethylene fiber yarns in sequence.

Preferably, the corrugated piece includes first aramid fiber layer, the top fixed connection on first aramid fiber layer is at the inner wall of outer tube, the lower fixed surface on first aramid fiber layer is connected with the rubber layer, the lower fixed surface on rubber layer is connected with the compressive layer, the lower fixed surface on compressive layer is connected with the temperature-resistant layer, the lower fixed surface on temperature-resistant layer is connected with the wearing layer, the lower fixed surface on wearing layer is connected with the second aramid fiber layer.

Preferably, the rubber layer has a hardness of 60 to 70 degrees and a tensile strength of 20 MPa.

The utility model discloses owing to adopted bellows and guard piece, therefore have following beneficial effect: through the structure of setting for between outer tube and the inner tube, one can make the outer wall of pipeline level and smooth, two can make the middle part of pipeline have the characteristic of buffering, can effectual reduction pipeline atress inhomogeneous effect when burying underground, thereby can promote the pipeline effect of external shock resistance greatly, the effect of effectual promotion pipeline snap-back original shape simultaneously, the problem that also effectual reduction official way crest sinks easily, when the pipeline outside receives external shock, the protection piece can carry out effectual support to the lower surface of bellows, use mutually supporting with the stopper again, can effectively get the external shock power of conduction coming in and shift, ensure that the pipeline does not receive the influence of shock power, thereby safety when promoting the pipeline use greatly. Therefore, the utility model relates to a press from both sides core bellows.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the outer tube of the present invention;

fig. 3 is a schematic structural view of a middle protection member according to the present invention;

fig. 4 is a schematic view of the cross-sectional structure of the middle corrugated part of the present invention.

In the figure: 1. an outer tube; 2. a corrugated member; 21. a first aramid layer; 22. a rubber layer; 23. a pressure resistant layer; 24. a temperature resistant layer; 25. a wear layer; 26. a second aramid layer; 3. an inner tube; 4. a corrugated interlayer; 5. a guard; 51. a connecting layer; 52. an anti-permeation layer; 53. an enhancement layer; 54. a steel mesh layer; 55. a sealing layer; 56. and a waterproof layer.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:

example 1:

a sandwich corrugated pipe is shown in figures 1-3 and comprises an outer pipe 1, a corrugated part 2 and an inner pipe 3, wherein the inner wall of the outer pipe 1 is provided with the corrugated part 2, the lower surface of the corrugated part 2 is fixedly connected with a protection part 5, the lower surface of the protection part 5 is fixedly connected with the inner pipe 3, the upper surface of the corrugated part 2 is fixedly connected with a corrugated interlayer 4, the top of the corrugated interlayer 4 is fixedly connected with the inner wall of the outer pipe 1, and the corrugated interlayer 4 can effectively improve the protection between a pipeline and the corrugated part 2 and effectively reduce the deformation effect of the pipeline caused by external force; the bending radius of the corrugated piece 2 is 65mm, the applicable pressure is 7.5mpa, the wall thickness is 3mm, the height difference between the wave crest and the wave trough of the corrugated piece 2 is 1.3mm, and the thread pitch is 6 mm.

In this embodiment, the protection member 5 includes a connection layer 51, an anti-permeation layer 52, a reinforcement layer 53 and a steel mesh layer 54, wherein the lower surface of the connection layer 51 is fixedly connected to the outer surface of the inner pipe 3, and the upper surface of the connection layer 51 and the lower surface of the anti-permeation layer 52 are in contact with each other; the anti-seepage layer 52 has high anti-seepage coefficient-the anti-seepage film has an anti-seepage effect which is incomparable with common waterproof materials, the HDPE anti-seepage film has high strength and tensile mechanical property, and the excellent elasticity and deformability make the HDPE anti-seepage film very suitable for an expansion or contraction base surface, can effectively overcome the uneven settlement of the base surface and has high water vapor permeability coefficient; chemical stability-the impermeable membrane has excellent chemical stability and is widely used in sewage treatment, chemical reaction tanks and refuse landfills. The paint is resistant to high and low temperature, asphalt, oil and tar, acid, alkali, salt and other chemical media of more than 80 strong acid and strong alkali; the anti-aging anti-seepage film has excellent anti-aging, anti-ultraviolet and anti-decomposition capabilities, can be used naked, has the service life of 50-70 years, and provides good material guarantee for environmental anti-seepage; the HDPE anti-seepage film resisting the plant root system has excellent puncture resistance and can resist most of the plant root system; the high mechanical strength impermeable membrane has good mechanical strength, the breaking tensile strength is 28MPa, and the breaking elongation is 700%; the HDPE impermeable membrane has low cost and high benefit, the novel technology is adopted to improve the impermeable effect, but the production process is more scientific and rapid, so the product cost is lower than that of the traditional waterproof material, and the cost is saved by about 50 percent by adopting the general engineering of the HDPE impermeable membrane through actual measurement and calculation; the construction speed is high, the anti-seepage film has high flexibility, various specifications and various laying forms meet the anti-seepage requirements of different projects, and hot melting welding is adopted, so that the welding line strength is high, the construction is convenient, rapid and healthy; the materials adopted by the environment-friendly nontoxic impermeable membrane are nontoxic and environment-friendly materials, the impermeable principle is common physical change, no harmful substance is generated, and the impermeable membrane is the best choice for environment-friendly, breeding and drinking water pools.

Further, the upper surface of the permeation-prevention layer 52 is in contact with the lower surface of the enhancement layer 53, the upper surface of the enhancement layer 53 is inlaid with a steel mesh layer 54, the upper surface of the steel mesh layer 54 is in contact with the lower surface of the sealing layer 55, and the waterproof layer 56 is uniformly coated on the upper surface of the sealing layer 55, so that the corrugated part 2 and the inner part of the outer pipe 1 can be effectively supported and protected, and meanwhile, the outer pipe 1 is effectively reduced to be deformed due to extrusion of external force.

Further, the waterproof layer 56 is one of a perfluoro-six-carbon waterproof agent or a perfluoro-four-carbon waterproof agent, and the reinforcing layer 53 is formed by sequentially spirally winding ultrahigh molecular weight polyethylene fiber yarns.

In this embodiment, through the structure of setting for between outer tube 1 and the inner tube 3, one can make the outer wall of pipeline level and smooth, and two can make the middle part of pipeline have the characteristic of buffering, can effectually reduce the inhomogeneous effect of pipeline atress when burying underground to can promote the effect that the pipeline is able to bear or endure external force impact greatly, the effect of effectual promotion pipeline fast recovery original shape simultaneously, the problem that also effectual reduction official seal road crest sinks easily.

Example 2:

as shown in fig. 4, the corrugated member 2 includes a first aramid fiber layer 21, the top of the first aramid fiber layer 21 is fixedly connected to the inner wall of the outer tube 1, a rubber layer 22 is fixedly connected to the lower surface of the first aramid fiber layer 21, a pressure resistant layer 23 is fixedly connected to the lower surface of the rubber layer 22, a temperature resistant layer 24 is fixedly connected to the lower surface of the pressure resistant layer 23, a wear-resistant layer 25 is fixedly connected to the lower surface of the temperature resistant layer 24, and a second aramid fiber layer 26 is fixedly connected to the lower surface of the wear-resistant layer 25; the bending radius of the corrugated piece 2 is 120mm, the applicable pressure is 12.5mpa, the wall thickness is 6mm, the height difference between the wave crest and the wave trough of the corrugated piece 2 is 5mm, and the screw pitch is 18 mm; the hardness of the rubber layer 22 is 60-70 degrees, the tensile strength of the rubber layer 22 is 20MPa, the characteristic flame-retardant and heat-resistant performance of the first aramid layer 21 is that the Limiting Oxygen Index (LOI) of the meta-aramid is more than 28, so that the meta-aramid can not be continuously combusted when the meta-aramid is away from flame; the flame retardant property of the aramid fiber is determined by the chemical structure of the aramid fiber, so that the aramid fiber is a permanent flame retardant fiber and cannot reduce or lose the flame retardant property due to the use time and the washing times; the aramid fiber has good thermal stability, can be continuously used at the temperature of 205 ℃, and can still keep higher strength at the high temperature of more than 205 ℃; the aramid fiber has higher decomposition temperature, can not melt or drip at high temperature, and can be carbonized only when the temperature is higher than 370 ℃; the stable chemical property meta-aramid has excellent performance of resisting most chemical substances, can resist most high-concentration inorganic acid, and has good alkali resistance at normal temperature; the radiation resistance meta-aramid fiber has excellent radiation resistance; for example, under the long-time irradiation of 1.2X 10-2w/in2 ultraviolet rays and 1.72X 108rads gamma rays, the intensity of the ultraviolet rays is still unchanged; the durable meta-aramid fiber has excellent friction resistance and chemical resistance, and after 100 times of washing, the tearing strength of the cloth processed by the aramid fiber can still reach more than 85% of the original strength.

In this embodiment, the pliability of effectual lifting pipe way, the hardness of also effectual improvement pipeline to can promote the crushing resistance between outer tube 1 and the inner tube 3 greatly, because first aramid fiber layer 21 and second aramid fiber layer 26 have excellence intensity, high-modulus and high temperature resistant, acid and alkali resistant, light in weight, insulating, ageing resistance, life cycle are good performance such as cycle length, can effectual lifting pipe way encircle rigid performance.

Experimental example:

the corrugated pipes of examples 1 to 2 were observed for their effects as shown in the following tables

The results of the tests on the corrugated pipes of examples 1 to 2 are shown in the following tables

According to the above table, the present invention obviously improves the internal pressure resistance, impact resistance and ring flexibility of the bellows, and improves the safety of the bellows during use.

The utility model discloses a step is implemented to double-layered core bellows, carries first extruder with the raw materials through the material loading, and the extruder is extruded resin melting, and rethread bellows module forms the bellows, through the bellows in the heating bellows module, extrudees the material by the extruder again and extrudes double-layered core bellows outer wall module, at last cooling shaping.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a core bellows, includes outer tube (1), corrugated member (2) and inner tube (3), its characterized in that: the inner wall of outer tube (1) is provided with bellows (2), the lower surface fixedly connected with protection piece (5) of bellows (2), and the lower surface fixedly connected with inner tube (3) of protection piece (5), the upper surface fixed connection of bellows (2) has ripple intermediate layer (4), the top fixed connection of ripple intermediate layer (4) is at the inner wall of outer tube (1).

2. The sandwich corrugated tube of claim 1, wherein: the protection piece (5) comprises a connecting layer (51), an anti-permeation layer (52), a reinforcing layer (53) and a steel mesh layer (54), wherein the lower surface of the connecting layer (51) is fixedly connected to the outer surface of the inner pipe (3), and the upper surface of the connecting layer (51) is in contact with the lower surface of the anti-permeation layer (52).

3. The sandwich corrugated tube of claim 2, wherein: the upper surface of the anti-seepage layer (52) is in mutual contact with the lower surface of the reinforcing layer (53), a steel mesh layer (54) is embedded in the upper surface of the reinforcing layer (53), the upper surface of the steel mesh layer (54) is in mutual contact with the lower surface of the sealing layer (55), and the waterproof layer (56) is uniformly coated on the upper surface of the sealing layer (55).

4. The sandwich corrugated tube of claim 3, wherein: the waterproof layer (56) is one of a perfluoro-six-carbon waterproof agent or a perfluoro-four-carbon waterproof agent, and the reinforcing layer (53) is formed by spirally winding ultrahigh molecular weight polyethylene fiber yarns in sequence.

5. The sandwich corrugated tube of claim 1, wherein: corrugated member (2) are including first aramid fiber layer (21), the top fixed connection on first aramid fiber layer (21) is at the inner wall of outer tube (1), the lower fixed surface of first aramid fiber layer (21) is connected with rubber layer (22), the lower fixed surface on rubber layer (22) is connected with crushing layer (23), the lower fixed surface of crushing layer (23) is connected with resistant temperature layer (24), the lower fixed surface of resistant temperature layer (24) is connected with wearing layer (25), the lower fixed surface of wearing layer (25) is connected with second aramid fiber layer (26).

6. The sandwich corrugated tube of claim 5, wherein: the hardness of the rubber layer (22) is 60-70 degrees, and the tensile strength of the rubber layer (22) is 20 MPa.