Composite seepage and drainage three-dimensional net plate and planting roof

Abstract

The utility model relates to the technical field of planting roof drainage, and provides a composite seepage and drainage three-dimensional net plate which comprises a middle interlayer and non-woven fabrics arranged on the two sides of the middle interlayer. The middle interlayer is a soft three-dimensional net-shaped object formed by mutually winding and bonding high polymer silk threads; the non-woven fabric is a tear-resistant fabric made of skin-core type composite fibers; the middle interlayer is combined with the non-woven fabrics on the two sides of the middle interlayer in a hot pressing mode. The three-dimensional net plate has the drainage and filtering functions at the same time, is a drainage and filtering integrated product, facilitates rapid drainage of the planting roof, enables plant roots to keep good air permeability, and meanwhile can simplify the construction procedure of an existing planting roof and improve the construction efficiency. The utility model further provides the planting roof.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of planting roof drainage, and in particular to a composite seepage-drainage three-dimensional net plate and a planting roof. BACKGROUND

[0002] In order to increase green comfortable space and relieve urban heat island effect, more and more buildings are provided with planting roofs, and the planting roof is generally provided with a waterproof layer on a floor top plate, and then a concrete protection layer, a drainage layer, a filter layer, a planting soil layer and a plant layer are sequentially arranged above the concrete protection layer, the drainage layer is formed by using drainage plates, and the drainage plates are connected with external drainage ditches or drainage pipes.

[0003] The drainage plate is generally made of high-density polyethylene (HDPE), polyethylene (PE) or polypropylene (PP) plate material through heating and stamping, and has a conical boss or a convex point of a stiffening rib on the surface, so that a system with water storage and drainage functions is formed. However, the internal accumulated water of the traditional convex-concave type plastic drainage plate is easy to cause the root system of the plant to rot, and it is not convenient to quickly drain water in the rainy season, so that the vegetation withers and dies. The 200g / m 2 The polyester non-woven fabric as the filter layer may sink and block the drainage channels of the drainage plate, so that the drainage is not smooth, or the non-woven fabric is torn due to insufficient tensile force, so that the soil enters the drainage channels of the drainage plate and blocks the drainage channels. In addition, the drainage layer and the filter layer are separately arranged, that is, the drainage layer and the filter layer are arranged in two processes, which undoubtedly reduces the construction efficiency of the planting roof. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the application provides a composite seepage-drainage three-dimensional net plate and a planting roof, the three-dimensional net plate in the application has drainage and filtration functions, is a drainage+filtration integrated product, is beneficial to rapid drainage of the planting roof, makes the root system of the plant maintain good air permeability, and simultaneously simplifies the construction process of the existing planting roof and improves the construction efficiency, and the technical scheme adopted by the application is as follows:

[0005] A composite seepage-drainage three-dimensional net plate, comprising a middle interlayer and non-woven fabrics arranged on both sides of the middle interlayer; the middle interlayer is a soft three-dimensional net-shaped object formed by mutual winding and bonding of high polymer filaments; the non-woven fabric is a tear-resistant cloth made of a sheath-core composite fiber; and the middle interlayer and the non-woven fabrics on both sides thereof are hot-pressed and combined.

[0006] The three-dimensional net plate in the application has the functions of drainage and filtration, is a drainage + filtration integrated product, is beneficial to rapid drainage of the planted roof, keeps the plant root system in good air permeability, and has the dual functions of the drainage layer and the filtration layer in the traditional planted roof, so that the construction process of the existing planted roof can be simplified and the construction efficiency can be improved. In addition, the non-woven fabric in the three-dimensional net plate is a tear-resistant fabric with high tensile strength, which can ensure that the planting soil layer does not collapse and prevent the planting soil layer from sinking to block the drainage channel or cause soil loss.

[0007] In some embodiments, the high polymer adopted by the intermediate interlayer is one or more of polypropylene, polyethylene, polyamide, and polyethylene terephthalate.

[0008] In some embodiments, the skin layer of the skin-core composite fiber adopted by the non-woven fabric has a lower melting point than the core layer.

[0009] In some embodiments, the core layer of the skin-core composite fiber is polyethylene terephthalate.

[0010] In some embodiments, the skin layer of the skin-core composite fiber is one or more of polypropylene, polyethylene, and polyamide.

[0011] In some embodiments, the thickness of the composite type drainage and filtration three-dimensional net plate is 8mm-15mm.

[0012] The overall thickness of the three-dimensional net plate in the application is thinner and lighter than the thickness of the traditional drainage layer + filtration layer, is more economical, reduces the roof load, and realizes lightweight roof planting.

[0013] In some embodiments, the thickness of the composite type drainage and filtration three-dimensional net plate is 8mm-10mm.

[0014] In another aspect, the application provides a planted roof which adopts the aforementioned composite type drainage and filtration three-dimensional net plate as a drainage layer and a filtration layer.

[0015] In some embodiments, the planted roof comprises, in sequence from top to bottom, a coating waterproof layer, an insulation layer, a leveling layer or a sloping layer, a roll waterproof layer, a root penetration resistant roll waterproof layer, a separation layer, a protection layer, a composite type drainage and filtration three-dimensional net plate layer, a planting soil layer, and a plant layer.

[0016] The composite type drainage and filtration three-dimensional net plate and the planted roof provided by the application have at least one of the following beneficial effects:

[0017] 1. The composite water-permeable and water-draining three-dimensional net plate provided by the application has water-draining and filtering functions, is a water-draining + filtering integrated product, is beneficial to the rapid water drainage of a planted roof, keeps the plant root system in good air permeability, and has the dual functions of a water-draining layer and a water-filtering layer in a traditional planted roof, so as to simplify the construction process of an existing planted roof and improve construction efficiency.

[0018] 2. The composite water-permeable and water-draining three-dimensional net plate provided by the application has a smaller overall thickness than a traditional water-draining layer + water-filtering layer, is lighter in weight, is more economical, reduces roof load, and realizes lightweight roof planting.

[0019] 3. The nonwoven fabric in the composite water-permeable and water-draining three-dimensional net plate provided by the application is a tear-resistant fabric and has high tensile strength, so as to ensure that the planting soil layer does not collapse and prevent the planting soil layer from sinking to block the water-draining channel or causing soil loss. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above features, technical characteristics, advantages and implementation modes of the composite water-permeable and water-draining three-dimensional net plate and the planted roof will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings:

[0021] Figure 1 is a structural schematic view of an embodiment of the composite water-permeable and water-draining three-dimensional net plate;

[0022] Figure 2 is a soft three-dimensional net formed by mutual winding and bonding of high polymer filaments;

[0023] Figure 3 is an internal fiber structure of an embodiment of the tear-resistant fabric made of a skin-core composite fiber;

[0024] Figure 4 is a structural schematic view of an embodiment of the planted roof.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] middle interlayer 1, nonwoven fabric 2, concrete top plate 3, coating waterproof layer 4, thermal insulation layer 5, leveling layer (sloping layer) 6, coiled waterproof layer 7, root-penetration-resistant coiled waterproof layer 8, isolation layer 9, protection layer 10, composite water-permeable and water-draining three-dimensional net plate layer 11, planting soil layer 12, plant layer 13. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0028] In order to make the drawings simple, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0029] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0030] In this paper, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0032] Reference Figures 1-4 The present application provides a composite type of water permeable and draining three-dimensional mesh board, which comprises a middle interlayer 1 and a non-woven fabric 2 arranged on both sides of the middle interlayer 1; the middle interlayer 1 is a soft three-dimensional mesh made of high polymer filaments which are mutually twisted and bonded; the non-woven fabric 2 is a tear-resistant fabric made of core-sheath composite fibers; the middle interlayer 1 and the non-woven fabrics 2 on both sides thereof are hot-pressed and combined.

[0033] Specifically, referring to Figure 2 The middle interlayer 1 is a soft three-dimensional mesh made of high polymer filaments which are mutually twisted and bonded, and has high porosity, so that the involved rainwater can be quickly drained. The high polymer used in the middle interlayer 1 is one or more of polypropylene (PP), polyethylene (PE), polyamide (PA), polyethylene terephthalate (PET) and the like.

[0034] The non-woven fabric 2 is a tear-resistant fabric made of a sheath-core composite fiber, which is made by a heat pressing process, referring to Figure 3 The sheath-core composite fiber is provided with a core layer (inner core) and a sheath layer (outer layer), and the sheath layer is wrapped outside the core layer, and the melting point of the sheath layer is lower than that of the core layer.

[0035] Specifically, the core layer can be polyethylene terephthalate (PET) or polyphenylene sulfide (PPS), and the sheath layer can be one or more of polypropylene (PP), polyethylene (PE), polyamide (PA), etc. Take the core layer as polyethylene terephthalate (PET) material and the sheath layer as polyamide (PA) material as an example: The PA material of the sheath layer has a lower melting point than the PET of the core layer. When making by heat pressing, the hot melting temperature is controlled between the melting points of the inner and outer layers, so that the core layer remains in its original form while the sheath layer melts and the sheath layer is bonded between the sheath layers. By auxiliary pressure, the sheath-core composite fibers are bonded together, and finally a tear-resistant fabric with high connection strength is formed. The tear-resistant fabric has high anti-cracking performance, which can ensure that the planting soil layer does not collapse, and prevent the planting soil layer 12 from sinking and blocking the drainage channel or causing soil loss. The two sides of the tear-resistant fabric made of sheath-core composite fiber and the middle interlayer are combined together by heat pressing to form a composite type of three-dimensional drainage net plate.

[0036] The thickness of the composite type of three-dimensional drainage net plate is 8mm-15mm, preferably 8mm-10mm, which is thinner and lighter in weight compared to the traditional drainage layer + filter layer, more economical, and also reduces the roof load, achieving lightweight roof planting.

[0037] It should be noted that the three-dimensional net plate in the present application has both drainage and filtration functions, and is a drainage + filtration integrated product, which is beneficial to the rapid drainage of the planting roof, maintains good air permeability of the plant root system, and has the dual functions of the drainage layer and the filter layer in the traditional planting roof, which can simplify the construction process of the existing planting roof and improve the construction efficiency. In addition, the non-woven fabric 2 in the three-dimensional net plate is a tear-resistant fabric with high tensile strength, which can ensure that the planting soil layer does not collapse, and prevent the planting soil layer from sinking and blocking the drainage channel or causing soil loss.

[0038] In addition, the present application also provides a planting roof, which uses the aforementioned composite type of three-dimensional drainage net plate as a drainage layer and a filter layer. The specific structure of the composite type of three-dimensional drainage net plate is referred to the aforementioned embodiments. Since the planting roof adopts the technical solutions of the aforementioned embodiments, it at least has the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be repeated here.

[0039] Referring to Figure 4In one embodiment, the planting roof comprises, in sequence, a coating waterproof layer 4, an insulation layer 5, a leveling layer (sloping layer) 6, a coiled waterproof layer 7, a root penetration resistant coiled waterproof layer 8, an isolation layer 9, a protective layer 10, a composite water-permeable and water-draining three-dimensional mesh board layer 11, a planting soil layer 12, and a plant layer 13 on the concrete top plate 3.

[0040] The specific structure and construction process of the planting roof are as follows:

[0041] I. The concrete top plate 3 is cleaned by dust absorption and polishing to remove dust, floating slurry, etc., so that the base surface is flat, without peeling and shell formation. Then, a layer of waterproof coating is applied on the surface to form a coating waterproof layer 4. The waterproof coating can be selected from non-solidified asphalt waterproof coating, polyurethane waterproof coating, etc. Sealing treatment is performed on the local node parts with complex structures such as eaves, yin and yang corners, and pipe roots. A thick extruded polystyrene board is laid on the coating waterproof layer 4 as an insulation layer 5. The insulation layer 5 can also be made of polyurethane insulation board, expandable polystyrene board, etc., to play a role in insulation and heat insulation of the roof.

[0042] II. Cement mortar, light aggregate concrete, or other lightweight materials are poured as a leveling layer (sloping layer) 6. If the structure surface of the concrete top plate 3 itself has a certain slope, the insulation layer 5 above is a leveling layer. If the structure surface of the concrete top plate 3 itself tends to be horizontal, the above is a sloping layer, so that the roof structure layer has a certain slope to promote drainage.

[0043] III. The leveling layer (sloping layer) 6 is cleaned and watered to make the surface wet. A layer of waterproof coiled material is laid on the surface to form a coiled waterproof layer 7. The waterproof coiled material can be selected from SBS asphalt waterproof coiled material, etc. Then, a layer of root penetration resistant waterproof coiled material is laid on the above as a root penetration resistant waterproof coiled layer 8. The root penetration resistant waterproof coiled material is a kind of waterproof coiled material designed for planting roof waterproofing. Compared with other waterproof materials, it has the performance of root penetration resistance, ensuring that the waterproof layer will not be penetrated by plant roots. The root penetration resistance and waterproofing are closely combined to achieve perfect waterproofing and root blocking effect.

[0044] IV. After the laying of the waterproof coiled material is completed, a layer of cement mortar or fine stone concrete is constructed on the waterproof coiled material as a protective layer 10 to avoid exposure of the waterproof coiled material, prevent the waterproof coiled material from being stepped on and damaged in the subsequent construction process, block the influence of external environment such as direct sunlight, delay the aging of the waterproof layer in the use process, and prolong the service life of the coiled material. In addition, in order to avoid the volume stress caused by the deformation and cracking of the upper protective layer 10 from damaging the waterproof coiled material, a layer of isolation layer 9 is needed between the waterproof coiled material and the protective layer 10. The isolation layer 9 can be made of a layer of geotextile or a layer of PE plastic film.

[0045] Five, the upper part of the protective layer 10 is paved with the composite drainage three-dimensional net plate to form a composite drainage three-dimensional net plate layer 11, the composite drainage three-dimensional net plate has a certain water permeability, when it rains, rainwater can permeate through the composite drainage three-dimensional net plate, the three-dimensional net plate bears the functions of drainage, filtration and support, has good drainage function, ensures that there is no much accumulated water in the planting roof interior on rainy days, facilitates rapid drainage in the rainy season, avoids the situation that the soil overflows and blocks the drainage pipeline due to the accumulated water of the planting roof.

[0046] Reference Figure 2 The inside of the composite drainage three-dimensional net plate is a three-dimensional winding structure, which forms a plurality of pores inside. In an embodiment, the porosity of the composite drainage three-dimensional net plate is 20%, and the 20% porosity ensures the water permeability and also ensures that the three-dimensional net plate has a certain supporting effect.

[0047] The upper and lower surfaces of the composite drainage three-dimensional net plate are tear-resistant cloth made of core-sheath composite fibers, which play the roles of filtration and isolation, unlike the traditional drainage plate which needs to additionally set a layer of non-woven fabric on the upper part, the composite drainage three-dimensional net plate of the present application combines the three-dimensional net and the non-woven fabric to form an integrated product of drainage + filtration, so that the plant root system maintains good air permeability and the plant is more likely to survive.

[0048] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A composite water permeable and draining three-dimensional net board, characterized by, The intermediate interlayer and the non-woven fabric on both sides of the intermediate interlayer; The intermediate interlayer is a soft three-dimensional net formed by mutual intertwining and bonding of polymer filaments; The non-woven fabric is a tear-resistant fabric made of sheath-core composite fibers; The intermediate interlayer is hot-pressed and combined with the non-woven fabrics on both sides thereof.

2. The composite water permeable and draining three-dimensional net board according to claim 1, characterized in that, The sheath of the sheath-core composite fiber used in the non-woven fabric has a lower melting point than the core.

3. The composite water permeable and draining three-dimensional net board according to claim 2, characterized in that, The core of the sheath-core composite fiber is polyethylene terephthalate.

4. The composite water permeable and draining three-dimensional net board according to any one of claims 1-3, characterized in that, The thickness of the composite water-permeable and draining three-dimensional net board is 8mm-15mm.

5. The composite water permeable and draining three-dimensional net board according to claim 4, characterized in that, The thickness of the composite water-permeable and draining three-dimensional net board is 8mm-10mm.

6. A planted roof, characterized in that, The composite water-permeable and draining three-dimensional net board of any one of claims 1-5 is used as a draining layer and a filtering water layer.

7. A planted roof according to claim 6, wherein, The composite water-permeable and draining three-dimensional net board is used as a draining layer and a filtering water layer.

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