A composite plastic drainage board and preparation method thereof

Abstract

The present invention relates to the field of drain boards, and discloses a composite plastic drain board and a preparation method thereof, comprising a drain board support frame, both sides of the drain board support frame are fixedly connected with drain board connection plates, one side of the drain board connection plate is fixedly connected with a thermal insulation layer, one side of the thermal insulation layer is pasted with a geotextile, and one side of the geotextile is pasted with a protective plate. Compared with the prior art, the present invention reduces the wear of the geotextile due to friction when pedestrians pass by, thereby reducing the rupture of the geotextile during use, so that road debris enters the plastic drain board, and the drainage performance of the plastic drain board is affected.

Description

Technical Field

[0001] The invention relates to the field of drainage boards, in particular to a composite plastic drainage board and a preparation method thereof. Background Art

[0002] Composite drainage board, also known as three-dimensional composite drainage net or drainage grid, is a new type of drainage geotechnical material. It is made of high-density polyethylene (HDPE) as raw material and processed by a special extrusion molding process. The composite drainage board is composed of one or two layers of non-woven geotextiles and a layer of three-dimensional synthetic geotextile core with different structures. It is a composite structure with drainage and isolation functions.

[0003] In the prior art, a Chinese patent document with publication number CN110450509B proposes a pressing and forming method for plastic drainage boards, which solves the problem that when the speed of the pressing roller is fast, the contact time between the non-woven fabric and the plastic core board is short, resulting in poor pressing quality, and when the speed of the pressing roller is slow, the contact time between the non-woven fabric and the plastic core board is long, causing damage to the plastic drainage board. However, in actual application, when the drainage board used on the road is in use, there are many pedestrians stepping on the top of the waterproof board, causing greater wear of the geotextile covering the top of the waterproof board, thereby shortening the service life of the geotextile and making it easy to break. If the geotextile is not replaced in time, road debris will fall into the drainage board through the geotextile, resulting in poor drainage in the drainage board. Therefore, we disclose a composite plastic drainage board and a preparation method thereof to meet the demand for ensuring smooth drainage of the drainage board. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a composite plastic drainage board and a preparation method thereof, which has the advantages of extending the life of the geotextile and ensuring smooth drainage of the drainage board, and solves a series of problems such as the rupture of the geotextile and the entry of debris into the drainage board.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite plastic drainage board, comprising a drainage board support frame, both sides of the drainage board support frame are fixedly connected with drainage board connecting plates, one side of the drainage board connecting plate is fixedly connected with an insulation layer, one side of the insulation layer is pasted with a geotextile, and one side of the geotextile is pasted with a protective plate; one side of the protective plate is fixedly connected with a fixing column, both sides of the fixing column are fixedly connected with a plurality of limit plates; the lower side of the fixing column is conical, the limit plates are arranged in a fishbone shape on both sides of the fixing column, the limit plates are obliquely arranged on both sides of the fixing column, and the limit plates are inclined toward the upper end of the fixing column.

[0006] Preferably, a plurality of limit columns are fixedly connected to one side of the drainage board connecting plate, and a plurality of limit sleeves fixedly connected to one side of the protective plate are movably connected to the limit columns, and a plurality of holes are opened in the middle of the insulation layer and the geotextile, and the holes in the middle of the insulation layer and the geotextile are adapted to the limit columns and the limit sleeves.

[0007] Preferably, fixed slots are provided on both sides of the inner wall of the limiting sleeve, and fixed blocks are fixedly connected to both sides of the outer wall of the limiting column, and the fixed blocks are movably engaged with the fixed slots.

[0008] Preferably, the drain board connecting plate is composed of a plurality of regular hexagonal frames, one side of the drain board support frame is serrated, the drain board support frame and one side of the drain board connecting plate form a plurality of triangles, and the protective plate is composed of a plurality of triangular frames.

[0009] Preferably, the thermal insulation layer is made of aerogel felt.

[0010] A method for preparing a composite plastic drain board, specifically used to manufacture the composite plastic drain board as described above, comprises the following steps:

[0011] S1. Use the mold to make the drain board support frame, protective plate, drain board connecting plate, fixed column, limit plate, limit column, limit sleeve and fixed block;

[0012] S2. Open several holes in the middle of the insulation layer and the geotextile;

[0013] S3, placing the insulation layer and the geotextile on one side of the drainage board connecting plate, and making the insulation layer and the geotextile sleeved with the limiting column, and then sleeve the limiting sleeve with the limiting column, so that the fixed card block is clamped with the fixed card slot;

[0014] S4. Place the protective plate connected with the fixing column on the ground.

[0015] Preferably, the drain board support frame and the drain board connecting plate in S1 are manufactured separately and then connected together by heating at the connection points.

[0016] Preferably, two of each of the protective plate and the drainage plate connecting plate in S1 are manufactured.

[0017] Preferably, one of the protective plate, the fixing column and the limiting plate is integrally formed by injection molding, another of the protective plate, the limiting column and the fixing block is integrally formed by injection molding, and one of the drainage board connecting plates and the limiting sleeve is integrally formed.

[0018] Preferably, the step S3 further includes the following steps:

[0019] S31, placing one of the protective plates connected to the fixing column and the limiting plate on the ground;

[0020] S32, sequentially attaching one of the geotextiles to the top of one of the protective plates using hot melt adhesive, and then attaching one of the thermal insulation layers to the top of one of the geotextiles using hot melt adhesive, and aligning the geotextile and the thermal insulation layer with the limiting column during connection;

[0021] S33. Then, the connected drainage board connecting plate and drainage board support frame are glued to the top of one of the insulation layers using hot melt adhesive. When connecting, the limit column and the limit sleeve are aligned and sleeved. Then, another insulation layer, the geotextile and the protective plate are glued in sequence to the other end of the connected drainage board connecting plate and drainage board support frame.

[0022] Compared with the prior art, the present invention provides a composite plastic drainage board and a preparation method thereof, which has the following beneficial effects:

[0023] 1. The composite plastic drainage board and its preparation method, after the plastic drainage board is laid on the ground, pedestrians will step on the top of the protective plate when passing by, and will not directly rub against the geotextile, thereby reducing the wear of the geotextile due to friction, thereby reducing the rupture of the geotextile during use, allowing road debris to enter the plastic drainage board, affecting the drainage performance of the plastic drainage board.

[0024] 2. The composite plastic drainage board and its preparation method have a protective plate that contacts the ground and then the fixed column drives the limit plate to be inserted into the ground. The limit plate increases the resistance generated when the protective plate moves after the fixed column is inserted into the ground, thereby enhancing the friction resistance between the protective plate and the ground, increasing the stability of the plastic drainage board during use, preventing the protective plate from moving during use, maintaining the normal use of the plastic drainage board, and preventing pedestrians from falling due to the sliding of the plastic drainage board, thereby improving the safety of the plastic drainage board.

[0025] 3. The composite plastic drain board and its preparation method, the protective plate and the drain board connecting plate are stabilized by the limit columns and the limit sleeves to connect with the insulation layer and the geotextile, thereby reducing the wrinkles of the insulation layer and the geotextile due to uneven force or uneven ground, causing relative displacement between the protective plate, the drain board connecting plate, the insulation layer and the geotextile, thereby affecting the normal use of the plastic drain board or causing pedestrians to trip, thereby improving the practicality of the plastic drain board. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the connection structure between the protective plate and the fixing column of the present invention;

[0028] Figure 3 It is a schematic diagram of the connection structure of the fixed column and the limiting plate of the present invention;

[0029] Figure 4 It is a schematic diagram of the partially cutaway structure of the thermal insulation layer, geotextile and limiting sleeve of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the connection of the drainage board support frame of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the drainage board support frame and the drainage board connecting plate of the present invention.

[0032] In the figure: 1. Drainage board support frame; 2. Insulation layer; 3. Geotextile; 4. Protective plate; 5. Drainage board connecting plate; 6. Fixed column; 7. Limit plate; 8. Limit column; 9. Limit sleeve; 10. Fixed block; 11. Fixed slot. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a composite plastic drainage board and a preparation method thereof.

[0035] In a typical implementation of the present application, Figure 1-Figure 6As shown, a composite plastic drain board comprises a drain board support frame 1, both sides of the drain board support frame 1 are fixedly connected with drain board connecting plates 5, one side of the drain board connecting plate 5 is fixedly connected with a thermal insulation layer 2, one side of the thermal insulation layer 2 is pasted with a geotextile 3, one side of the geotextile 3 is pasted with a protective plate 4, the drain board connecting plate 5 is composed of a number of regular hexagonal frames, one side of the drain board support frame 1 is serrated, the drain board support frame 1 and one side of the drain board connecting plate 5 form a number of triangles, the protective plate 4 is composed of a number of triangular frames, the thermal insulation layer 2 is made of aerogel felt, and when in use, the drain board support frame 1 is connected to the drain board 2. Drainage board connecting plates 5 are fixedly connected to both sides of the support frame 1, and one side of the drainage board connecting plate 5 is fixedly connected to the insulation layer 2, and a geotextile 3 is pasted on one side of the insulation layer 2, and a protective plate 4 is pasted on one side of the geotextile 3, so that the drainage board support frame 1, the insulation layer 2, the geotextile 3, the protective plate 4 and the drainage board connecting plate 5 are fixed to each other, so that after the plastic drainage board is laid on the ground, pedestrians will step on the top side of the protective plate 4 when passing by, and will not directly rub against the geotextile 3, thereby reducing the wear of the geotextile 3 due to friction, thereby reducing the rupture of the geotextile 3 during use, making the road surface The problem of debris entering the plastic drain board and affecting the drainage performance of the plastic drain board occurs, and the insulation layer 2 also makes the temperature of the inner cavity of the drain board connecting plate 5 and the drain board support frame 1 relatively stable, reducing the occurrence of rapid freezing of water flow in the plastic drain board due to the influence of temperature. The drain board connecting plate 5 is composed of a number of regular hexagonal frames, so that the drain board connecting plate 5 has better stability and is not easy to deform. One side of the drain board support frame 1 is serrated, so that the drain board support frame 1 has better stability and less influence on the water flow. The drain board support frame 1 and one side of the drain board connecting plate 5 are connected. A number of triangles are formed to stabilize the connection between the drain board support frame 1 and the drain board connecting plate 5, thereby ensuring the normal drainage of the plastic drain board. The protective plate 4 is composed of a number of triangular frames, so that the protective plate 4 is relatively stable as a whole, and the protective plate 4 does not affect the flow of water, and the friction with pedestrians' shoes is enhanced to reduce the occurrence of pedestrians slipping when walking. The thermal insulation layer 2 is made of aerogel felt, so that the thermal insulation layer 2 has low thermal conductivity and overall hydrophobic properties, so that the thermal insulation layer 2 does not affect the flow of water, and can also hinder the transmission of cold air, thereby reducing the freezing rate of water in the drain board.

[0036] As a preferred implementation in this embodiment, refer to the attached Figure 2 and Figure 3A fixing column 6 is fixedly connected to one side of a protective plate 4, and a plurality of limit plates 7 are fixedly connected to both sides of the fixing column 6. The lower end of the fixing column 6 is conical, and the limit plates 7 are arranged in a fishbone shape on both sides of the fixing column 6. The limit plates 7 are tilted on both sides of the fixing column 6, and the limit plates 7 are tilted toward the upper end of the fixing column 6. A fixing column 6 is fixedly connected to one side of a protective plate 4, and a plurality of limit plates 7 are fixedly connected to both sides of the fixing column 6, so that after a protective plate 4 contacts the ground, the fixing column 6 will drive the limit plates 7 to be inserted into the ground, thereby enhancing the contact between the protective plate 4 and the ground. The friction resistance between the fixing columns 6 can prevent the protective plate 4 from moving during use, maintain the normal use of the plastic drainage board, and prevent pedestrians from falling due to the sliding of the plastic drainage board. The lower end of the fixing column 6 is conical, and the limiting plates 7 are arranged in a fishbone shape on both sides of the fixing column 6. The limiting plates 7 are tilted on both sides of the fixing column 6, and the limiting plates 7 are tilted toward the upper end of the fixing column 6, so that the fixing column 6 is easy to insert into the ground, and the limiting plates 7 increase the resistance generated when the protective plate 4 moves after the fixing column 6 is inserted into the ground, thereby increasing the stability of the plastic drainage board during use.

[0037] As a preferred implementation in this embodiment, refer to the attached Figure 4 , one side of the drainage board connecting plate 5 is fixedly connected with a plurality of limit columns 8, and a plurality of limit sleeves 9 fixedly connected to one side of the protective plate 4 are all movably connected with the limit columns 8. A plurality of holes are provided in the middle of the thermal insulation layer 2 and the geotextile 3, and the holes in the middle of the thermal insulation layer 2 and the geotextile 3 are adapted to the limit columns 8 and the limit sleeves 9. Fixed card grooves 11 are provided on both sides of the inner wall of the limit sleeve 9, and fixed card blocks 10 are fixedly connected to both sides of the outer wall of the limit column 8. The fixed card blocks 10 are movably connected with the fixed card grooves 11. A plurality of limit columns 8 are fixedly connected to one side of the drainage board connecting plate 5, and a plurality of limit sleeves 9 fixedly connected to one side of the protective plate 4 are all movably connected with the limit columns 8. The positioning column 8 is movably connected, and a number of holes are opened in the middle of the insulation layer 2 and the geotextile 3. The holes in the middle of the insulation layer 2 and the geotextile 3 are compatible with the limiting column 8 and the limiting sleeve 9, so that the protection plate 4 and the drainage board connecting plate 5 are stably connected with the insulation layer 2 and the geotextile 3 through the limiting column 8 and the limiting sleeve 9, reducing the wrinkles of the insulation layer 2 and the geotextile 3 due to uneven force or uneven ground, causing relative displacement between the protection plate 4, the drainage board connecting plate 5, the insulation layer 2 and the geotextile 3, thereby affecting the normal use of the plastic drainage board, or causing pedestrians to trip, thereby improving the practicability of the plastic drainage board.

[0038] A method for preparing a composite plastic drain board, specifically used to manufacture the above-mentioned composite plastic drain board, comprises the following steps:

[0039] S1, use a mold to make a drain board support frame 1, a protective plate 4, a drain board connecting plate 5, a fixed column 6, a limit plate 7, a limit column 8, a limit sleeve 9 and a fixed block 10. The drain board support frame 1 and the drain board connecting plate 5 in S1 are made separately and then the joints are heated and connected together. Two protective plates 4 and drain board connecting plates 5 in S1 are made, one protective plate 4, a fixed column 6 and a limit plate 7 are integrally formed by injection molding, and the other protective plate 4, a limit column 8 and a fixed block 10 are integrally formed by injection molding. One drain board connecting plate 5 and the limit sleeve 9 are integrally formed, which reduces the difficulty of making plastic drain boards with molds and makes it easy to ensure the production efficiency of plastic drain boards;

[0040] S2, opening a plurality of holes in the middle of the thermal insulation layer 2 and the geotextile 3;

[0041] S3, placing the insulation layer 2 and the geotextile 3 on one side of the drainage board connecting plate 5, and making the insulation layer 2 and the geotextile 3 sleeved with the limiting column 8, then sleeve the limiting sleeve 9 with the limiting column 8, so that the fixed card block 10 is clamped with the fixed card slot 11, and the step S3 also includes the following steps:

[0042] S31, placing a protective plate 4 connected to a fixing column 6 and a limiting plate 7 on the ground;

[0043] S32, sequentially affixing a geotextile 3 to the top of a protective plate 4 using hot melt adhesive, and then affixing a thermal insulation layer 2 to the top of a geotextile 3 using hot melt adhesive, and aligning the geotextile 3 and the thermal insulation layer 2 with the limiting column 8 during connection;

[0044] S33, then the connected drain board connecting plate 5 and drain board support frame 1 are glued to the top of an insulation layer 2 using hot melt adhesive, and the limit column 8 is aligned and sleeved with the limit sleeve 9 during the connection, and then the other end of the connected drain board connecting plate 5 and drain board support frame 1 is glued with another insulation layer 2, geotextile 3 and protective plate 4 in turn using hot melt adhesive, so that the connection method of the plastic drain board is simple and fast, which is convenient for a large number of plastic drain boards to be transported and assembled separately for use;

[0045] S4. Place the protective plate 4 connected with the fixing column 6 on the ground, so that the overall processing difficulty of the plastic drainage board is low, and it is easy to assemble and use, which is convenient for promotion and use. The working principle of the present invention: when in use, the drainage board support frame 1, the insulation layer 2, the geotextile 3, the protective plate 4 and the drainage board connecting plate 5 are fixed to each other, so that after the plastic drainage board is laid on the ground, pedestrians will step on the top of the protective plate 4 when passing by, and will not directly rub against the geotextile 3, thereby reducing the wear of the geotextile 3 caused by friction, thereby reducing the rupture of the geotextile 3 during use, so that road debris enters the plastic drainage board, and the problem of affecting the drainage performance of the plastic drainage board occurs.

[0046] After a protective plate 4 contacts the ground, the fixed column 6 will drive the limit plate 7 to insert into the ground. The limit plate 7 increases the resistance generated when the protective plate 4 moves after the fixed column 6 inserts into the ground, enhances the friction resistance between the protective plate 4 and the ground, increases the stability of the plastic drainage board during use, avoids the movement of the protective plate 4 during use, maintains the normal use of the plastic drainage board, and also avoids pedestrians from falling due to the sliding of the plastic drainage board, thereby improving the safety of the plastic drainage board.

[0047] The protective plate 4 and the drainage plate connecting plate 5 are stabilized by the connection between the insulation layer 2 and the geotextile 3 through the limiting columns 8 and the limiting sleeves 9, thereby reducing the wrinkles of the insulation layer 2 and the geotextile 3 due to uneven force or uneven ground, causing relative displacement between the protective plate 4, the drainage plate connecting plate 5, the insulation layer 2 and the geotextile 3, thereby affecting the normal use of the plastic drainage board or causing pedestrians to trip, thereby improving the practicality of the plastic drainage board.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite plastic drainage board, characterized in that: It comprises a drainage board support frame (1), both sides of the drainage board support frame (1) are fixedly connected to drainage board connection plates (5), one side of the drainage board connection plate (5) is fixedly connected to a thermal insulation layer (2), one side of the thermal insulation layer (2) is adhered to a geotextile (3), and one side of the geotextile (3) is adhered to a protective plate (4); A fixing column (6) is fixedly connected to one side of the protective plate (4), and a plurality of limit plates (7) are fixedly connected to both sides of the fixing column (6); The lower end of the fixing column (6) is conical; The limiting plates (7) are arranged in a fishbone shape on both sides of the fixed column (6); the limiting plates (7) are arranged obliquely on both sides of the fixed column (6); and the limiting plates (7) are inclined toward the upper end of the fixed column (6); A plurality of limit posts (8) are fixedly connected to one side of the drainage board connection plate (5); a plurality of limit sleeves (9) fixedly connected to one side of the protection plate (4) are movably sleeved with the limit posts (8); a plurality of holes are provided in the middle of the thermal insulation layer (2) and the geotextile (3); and the holes in the middle of the thermal insulation layer (2) and the geotextile (3) are compatible with the limit posts (8) and the limit sleeves (9).

2. A composite plastic drainage board according to claim 1, characterized in that: Both sides of the inner wall of the limiting sleeve (9) are provided with fixed slots (11), and both sides of the outer wall of the limiting column (8) are fixedly connected with fixed blocks (10), and the fixed blocks (10) are movably connected with the fixed slots (11).

3. A composite plastic drainage board according to claim 2, characterized in that: The drain board connecting plate (5) is composed of a plurality of regular hexagonal frames, one side of the drain board support frame (1) is serrated, the drain board support frame (1) and one side of the drain board connecting plate (5) form a plurality of triangles, and the protective plate (4) is composed of a plurality of triangular frames.

4. A composite plastic drainage board according to claim 3, characterized in that: The thermal insulation layer (2) is made of aerogel felt.

5. A method for preparing a composite plastic drain board, specifically used for manufacturing the composite plastic drain board as claimed in any one of claims 2 to 4, characterized in that: The steps include: S1. Using a mold to manufacture a drainage board support frame (1), a protective plate (4), a drainage board connecting plate (5), a fixing column (6), a limiting plate (7), a limiting column (8), a limiting sleeve (9) and a fixing block (10); S2, a plurality of holes are formed in the middle of the thermal insulation layer (2) and the geotextile (3); S3, placing the thermal insulation layer (2) and the geotextile (3) on one side of the drainage board connecting plate (5), and making the thermal insulation layer (2) and the geotextile (3) sleeved with the limiting column (8), and then sleeved with the limiting sleeve (9) and the limiting column (8), so that the fixed clamping block (10) is clamped with the fixed clamping groove (11); S4. Place the protective plate (4) connected to the fixing column (6) on the ground.

6. A method for preparing a composite plastic drainage board according to claim 5, characterized in that: The drain board support frame (1) and the drain board connecting plate (5) in S1 are manufactured separately and then connected together by heating at the connection points.

7. The method for preparing a composite plastic drainage board according to claim 5, characterized in that: The protective plate (4) and the drainage plate connecting plate (5) in S1 are each manufactured in pairs.

8. The method for preparing a composite plastic drainage board according to claim 5, characterized in that: One of the protective plates (4), the fixing column (6) and the limiting plate (7) is integrally formed by injection molding, another of the protective plates (4), the limiting column (8) and the fixing block (10) is integrally formed by injection molding, and one of the drainage plate connecting plates (5) and the limiting sleeve (9) is integrally formed.

9. The method for preparing a composite plastic drainage board according to claim 5, characterized in that: The step S3 also includes the following steps: S31, placing a protective plate (4) connected to the fixing column (6) and the limiting plate (7) on the ground; S32, sequentially affixing one of the geotextiles (3) to the top of one of the protective plates (4) using hot melt adhesive, and then affixing one of the thermal insulation layers (2) to the top of one of the geotextiles (3) using hot melt adhesive, and aligning the geotextile (3) and the thermal insulation layer (2) with the limiting column (8) during connection; S33, the connected drainage board connecting plate (5) and the drainage board support frame (1) are then glued to the top of one of the insulation layers (2) using hot melt adhesive, and the limit column (8) and the limit sleeve (9) are aligned and sleeved during the connection, and then the other end of the connected drainage board connecting plate (5) and the drainage board support frame (1) are glued to another insulation layer (2), the geotextile (3) and the protective plate (4) in sequence using hot melt adhesive.

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