Bamboo winding concealed conduit

Abstract

The utility model discloses a bamboo winding concealed conduit which comprises a composite pipe main body and a water-permeable sand-proof structure, the composite pipe main body sequentially comprises a lining layer, a reinforcing layer and an outer protective layer from inside to outside, the reinforcing layer is a bamboo skin layer formed by winding bamboo skin sheets, and the composite pipe main body is provided with a water seepage part and a water collection part along the pipe winding direction. The water seepage part is provided with a water seepage channel communicating the inside and the outside of the composite pipe body, and the water-permeable sand-proof structure covers the outer surface of the composite pipe body. The bamboo winding concealed pipe is made of bamboos and has the advantages of being renewable in raw material, green, low in carbon, energy-saving, environmentally friendly and the like, water outside the pipe can permeate into the pipe through the water seepage part, the water seepage amount is increased, the water-permeable sand-proof mechanism can accelerate the infiltration speed of the water outside the pipe, and the service life of the pipe is prolonged; moisture in the pipeline is discharged out of the saline-alkali soil body through the pipeline; the bamboo winding concealed conduit has the functions of water absorption, water collection and water drainage, the bamboo winding concealed conduit is introduced into saline-alkali soil improvement, and the application range of the bamboo winding concealed conduit is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of saline-alkali land improvement, in particular to a bamboo-wound concealed pipe. Background Art

[0002] Saline-alkali land is one of the important land resources in my country. The improvement of saline-alkali land plays an important role in increasing land area, improving the level of agricultural productivity of cultivated land, and ensuring the production of important agricultural products. At present, the underground pipe drainage and salt removal technology is one of the common water conservancy engineering improvement measures in the field of saline-alkali land improvement. Compared with other saline-alkali land improvement measures, it has the advantages of less land occupation, zero pollution and long life. The underground pipe drainage and salt removal technology is based on the water-salt migration principle of "salt comes with water and salt goes with water". The underground pipe with water seepage function is buried in the appropriate position under the surface of the saline-alkali land. When there is precipitation or irrigation, the soluble salt substances in the saline-alkali soil above the underground pipe move down to the underground pipe with water, penetrate into the underground pipe through the water seepage micropores of the underground pipe wall, and then discharge the soil through the underground pipe to achieve the effect of salt leaching and washing, which can effectively reduce the salt content of the soil. At the same time, the underground pipe controls the groundwater level at the critical depth, effectively inhibits the upward movement of highly mineralized groundwater, and reduces the secondary salinization of the soil, thereby achieving the purpose of saline-alkali land improvement.

[0003] With the development of concealed pipe drainage and salt removal technology, concealed pipes of different types of materials have gradually been used, mainly including clay pipes, concrete pipes, mesh PE hard permeable pipes, plastic drainage pipes, PVC double-wall corrugated plastic pipes, etc. Among them, PVC double-wall corrugated plastic pipes are widely used. In order to achieve pipe permeability and increase water seepage, it is generally necessary to drill holes or chisel tiny gaps on the pipe wall. Clay pipes have poor water permeability, are brittle and fragile, inconvenient to construct, and have low compressive strength; concrete pipes are heavy, difficult to drill and install, and have problems such as large inner wall roughness and easy siltation; mesh PE hard permeable pipes are not easy to be exposed to the sun, and high temperatures can easily affect their ring stiffness, and the inner wall roughness of the pipe is large; plastic drainage pipes are easily deformed under pressure, and the smooth outer wall makes it difficult to punch holes; PVC double-wall corrugated plastic pipes are light in weight, smooth and flat inner wall, high pressure bearing, low cost, and good water absorption performance, but PVC containing lead salt heat stabilizers will cause soil lead pollution and groundwater pollution, and once PE and PVC plastics are aged and decomposed, the microplastics produced will cause deep soil pollution and groundwater pollution. Therefore, it is imperative to develop a concealed pipe with light weight, high strength, low roughness, good water permeability, low cost, convenient construction, green and low-carbon, and environmentally friendly.

[0004] Bamboo-wound composite pipe is a bio-based pipe made of bamboo as the base material and resin as the adhesive, and is formed by winding technology. Its structure consists of three layers: inner lining layer, reinforcement layer, and outer protective layer. Bamboo-wound composite pipe has the characteristics of light weight, high strength, seawater corrosion resistance, low roughness, low cost, long service life, convenient construction, green and low-carbon, and environmentally friendly. It can replace traditional high-energy-consuming and high-pollution reinforced concrete pipes, plastic pipes and other pipes. Bamboo-wound composite pipes have been widely used in water supply and drainage projects, focusing on the water transmission function of the pipe body.

[0005] The existing technology has not improved the main wall structure of the bamboo-wrapped composite pipe to make it have a water-seepage function, and lacks the advantages of combining water absorption, water collection and drainage, which greatly limits the application of the bamboo-wrapped composite pipe in the field of saline-alkali land improvement. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a bamboo-wound concealed pipe, comprising a composite pipe body and a water-permeable and sand-proof structure.

[0007] The composite pipe body is composed of an inner lining layer, a reinforcement layer and an outer protective layer from the inside to the outside. The reinforcement layer is a bamboo strip layer, which is formed by winding bamboo strips, and the bamboo strips are bonded by amino resin. The composite pipe body is composed of a water seepage part and a water collection part along the winding direction. The water seepage part is provided with a water seepage channel connecting the inside and outside of the composite pipe body; the water-permeable and sand-proof structure covers the outer surface of the composite pipe body.

[0008] Preferably, the water seepage channel is a micropore with a pore size of 2.50-2.60 mm.

[0009] More preferably, the water seepage channel is a micropore with a pore size of 2.53 mm.

[0010] Preferably, the total area of ​​the micropores in the composite tube body is not less than 1000 mm 2 / m.

[0011] Preferably, the reinforcement layer is composed of multiple bamboo strips layers, and the thickness of the reinforcement layer is 4-50 mm.

[0012] Preferably, the water seepage portion occupies one half to two thirds of the composite pipe body along the pipe winding direction.

[0013] Specifically, the water seepage part occupies one half of the composite pipe body along the pipe winding direction. Water outside the pipe penetrates into the pipe through the micropores of the water seepage part, increasing the water seepage amount; the water collection part of the composite pipe body is used to collect the water that penetrates into the pipe.

[0014] Preferably, the thickness of the inner lining layer is 1.5-2 mm, and the thickness of the outer protective layer is 1.5-3 mm.

[0015] Specifically, the thickness of the inner lining layer is 1.5 mm, the thickness of the reinforcement layer is 4 mm, and the thickness of the outer protective layer is 1.5 mm.

[0016] Preferably, the inner lining layer is composed of resin and bamboo fiber non-woven fabric. The inner lining layer is composed of resin and bamboo fiber non-woven fabric with excellent antiseptic performance and food safety.

[0017] Preferably, the outer protective layer is an anti-corrosion and waterproof material coated on the outer surface of the reinforcement layer.

[0018] Preferably, the water-permeable and sand-proof structure is artificial non-woven fabric or oily linen.

[0019] The water-permeable and anti-sand structure is used to speed up the water penetration rate, prevent the mud and sand outside the pipe from blocking the micropores and prevent the mud and sand from entering the main pipe of the bamboo-wrapped composite pipe to cause mud and sand accumulation in the pipe, thereby extending the service life of the bamboo-wrapped concealed pipe.

[0020] The utility model discloses a bamboo-wrapped concealed pipe comprising a composite pipe main body and a water-permeable and sand-proof structure. The composite pipe main body comprises an inner lining layer, a reinforcement layer and an outer protective layer from the inside to the outside. The reinforcement layer is a bamboo strip layer, which is formed by winding bamboo strips. The composite pipe main body comprises a water seepage part and a water collecting part along the winding direction. The water seepage part is provided with a water seepage channel connecting the inside and the outside of the composite pipe main body. The water-permeable and sand-proof structure covers the outer surface of the composite pipe main body. The water seepage part of the composite pipe body of the bamboo wrapped concealed pipe of the present application is provided with micropores, which is conducive to the penetration of water outside the pipe into the inside of the pipe, so that the bamboo wrapped concealed pipe has a water seepage function and increases the water seepage amount; the water collecting part collects the water that penetrates into the inside of the pipe, and then discharges it out of the saline-alkali soil through the pipe, which plays a role in draining and salt removal. The water-permeable and sand-proof mechanism is conducive to accelerating the infiltration speed of water outside the pipe, and can prevent the mud and sand outside the pipe from blocking the micropores and prevent the mud and sand from entering the main pipe of the composite pipe to cause mud and sand accumulation in the pipe, thereby extending the service life of the pipe; the bamboo wrapped concealed pipe of the present application is made of bamboo as the material, and has the advantages of water absorption, water collection and drainage. It has the advantages of renewable raw materials, green and low-carbon, energy-saving and environmental protection, and environmentally friendly. It innovatively introduces bamboo wrapped composite pipes into the application scenarios of saline-alkali land improvement through improvement measures, further broadening the application scope of bamboo wrapped concealed pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the bamboo-wrapped concealed pipe structure provided in an embodiment of the utility model.

[0023] Explanation of the symbols in the figure: 1-composite pipe body; 101-inner lining layer; 102 reinforcing layer; 103 outer protective layer; 2-micropores; 3-water-permeable and sand-proof structure. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0026] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0027] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0028] See also Figure 1 Schematic diagram of the bamboo wrapped concealed pipe structure shown.

[0029] The bamboo-wrapped concealed pipe includes a composite pipe body 1 and a water-permeable and sand-proof structure 3. The composite pipe body 1 comprises an inner lining layer 101, a reinforcement layer 102 and an outer protective layer 103 from the inside to the outside, and the reinforcement layer 102 is a bamboo strip layer; the composite pipe body 1 comprises a water seepage part and a water collection part along the winding direction; the water-permeable and sand-proof structure 3 covers the outer surface of the composite pipe body 1.

[0030] In a specific embodiment, the bamboo wrapped concealed pipe is placed horizontally, and the water seepage portion occupies half of the composite pipe body 1 along the pipe winding direction; the water seepage portion is provided with a water seepage channel connecting the inside and outside of the composite pipe body 1, and the water seepage channel is a micropore 2 with an aperture of 2.53 mm, and the total area of ​​the micropores 2 provided on the composite pipe body 1 is not less than 1000 mm 2 / m. The water outside the pipeline penetrates into the pipeline through the micropores 2 of the water seepage part, increasing the water seepage amount; the water collecting part of the composite pipe body 1 is used to collect the water that penetrates into the pipeline, and then discharges it from the saline-alkali soil through the pipeline, playing the role of draining water and salt.

[0031] In a specific embodiment, the inner lining layer 101 has a thickness of 1.5 mm, and is composed of a resin and bamboo fiber non-woven fabric with excellent anti-corrosion performance and food safety; the reinforcing layer 102 has a thickness of 4 mm, and is composed of multiple layers of bamboo strips, which are wound with bamboo strips, and the bamboo strips are bonded with amino resins; the outer protective layer 103 has a thickness of 1.5 mm, and is an anti-corrosion and waterproof material coated on the outer surface of the reinforcing layer 102.

[0032] The water-permeable and sand-proof structure 3 is an artificial non-woven fabric or oil linen cloth. The water-permeable and sand-proof structure 3 is used to accelerate the water penetration speed, prevent the mud and sand outside the pipeline from blocking the micropores 2 and prevent the mud and sand from entering the bamboo-wrapped composite pipe body 1 to cause mud and sand accumulation in the pipeline, thereby extending the service life of the bamboo-wrapped concealed pipe.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A bamboo-wrapped concealed pipe, characterized in that: It includes a composite pipe body and a water-permeable and sand-proof structure; The composite pipe body is composed of an inner lining layer, a reinforcement layer and an outer protective layer from the inside to the outside, wherein the reinforcement layer is a bamboo strip layer, which is formed by winding bamboo strips; the composite pipe body is composed of a water seepage portion and a water collection portion along the winding direction, wherein the water seepage portion is provided with a water seepage channel connecting the inside and the outside of the composite pipe body; The water-permeable and sand-proof structure covers the outer surface of the composite pipe body.

2. The bamboo-wrapped concealed pipe according to claim 1, characterized in that: The water seepage channel is a micropore with a pore size of 2.50-2.60 mm.

3. The bamboo-wrapped concealed pipe according to claim 2, characterized in that: The water seepage channel is a micropore with a pore size of 2.53 mm.

4. The bamboo-wrapped concealed pipe according to claim 3, characterized in that: The total area of ​​the micropores in the composite pipe body is not less than 1000mm 2 / m.

5. The bamboo-wrapped concealed pipe according to claim 1, characterized in that: The reinforcing layer is composed of multiple bamboo strips layers, and the thickness of the reinforcing layer is 4-50mm.

6. The bamboo-wrapped concealed pipe according to claim 5, characterized in that: The water seepage portion occupies one half to two thirds of the composite pipe body along the pipe winding direction.

7. The bamboo-wrapped concealed pipe according to claim 1, characterized in that: The thickness of the inner lining layer is 1.5-2 mm, and the thickness of the outer protective layer is 1.5-3 mm.

8. The bamboo-wrapped concealed pipe according to claim 7, characterized in that: The inner lining layer is composed of resin and bamboo fiber non-woven fabric.

9. The bamboo-wrapped concealed pipe according to claim 7, characterized in that: The outer protective layer is an anti-corrosion and waterproof material coated on the outer surface of the reinforcement layer.

10. The bamboo-wrapped concealed pipe according to claim 1, characterized in that: The water-permeable and sand-proof structure is artificial non-woven fabric or oil-linen fabric.

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