A production method of degradable geotextile

Abstract

The application discloses a production method of degradable geotechnical filter cloth, which is characterized by the following steps: arranging a plurality of vertical blowing holes in a dot matrix on a disorderly blowing plate arranged on the top and bottom of a cotton box device, and arranging a spiral flow guide piece in each blowing hole; generating disorderly wind blowing upwards and downwards in the box through the top and bottom disorderly blowing plates; making the fibers in the box more uniformly distributed; and making the fibers intertwine with each other through the physical action of the disorderly wind force, and strengthening the binding force between the fibers; blowing the intertwined fibers to a roller roll through a transverse blowing device; gradually rolling and pressing the intertwined fibers out of the cotton box device through the roller roll; forming a primary fiber filter cloth with a large thickness; and then performing hot pressing through a hot pressing device to reduce the thickness of the filter cloth and further improve the strength of the filter cloth. In addition, the filter cloth made by the application uses natural fibers as the main raw material, and has good degradability.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of geotextile, and particularly relates to a production method of degradable geotextile. BACKGROUND

[0002] In the field of civil engineering, soft foundation (soft soil foundation) refers to soil layers with low bearing capacity, large compressibility and low strength, such as silt and peat. When building on these types of soil, special measures are usually taken to ensure structural stability and safety. Traditional soft soil foundation treatment methods include the use of plastic drainage boards or sand wells. When treating soft soil foundations, drainage board filter cloth is often used. Traditional drainage board filter cloth may contain non-degradable components, which can pollute the environment over a long period of time. Therefore, the development of new degradable non-woven filter cloth has become a research focus. These materials require the use of natural fibers (such as cotton, hemp, sugarcane, etc.) as raw materials, combined with special manufacturing processes to ensure that the materials have good strength and filtration performance, and can naturally degrade after the end of the use cycle. In summary, there is an urgent need to develop a filter cloth that can naturally degrade after completing its function. SUMMARY

[0003] The present application is mainly to overcome the shortcomings of the prior art, and provides a production method of degradable geotextile. The filter cloth produced by the method can be used for drainage boards to improve soil conditions, has good mechanical properties and degradability, and can gradually decompose after the completion of the project, reducing the impact on the environment.

[0004] The present application is achieved by the following technical solutions:

[0005] A production method of degradable geotextile, which adopts a production equipment, the production equipment comprises a cotton box device and a hot pressing device;

[0006] The cotton box device comprises a box body, a feeding port is arranged on the box body, a downward air blowing device is arranged at the top of the box body, an upward air blowing device is arranged at the bottom of the box body, a transverse air blowing device is arranged on one side of the box body, and a roller roller is arranged at the position of the discharge port opposite to the transverse air blowing device of the box body;

[0007] A top chaotic air blowing plate is arranged in the downward air blowing device, and a bottom chaotic air blowing plate is arranged in the upward air blowing device; the top chaotic air blowing plate and the bottom chaotic air blowing plate are the same in structure and are arranged symmetrically up and down, and the structure comprises a plate body, a plurality of vertical air blowing holes are arranged on the plate body in a dot matrix, a spiral flow guide piece is arranged in each air blowing hole, and the spiral flow guide piece comprises two forms of right-handed spiral flow guide pieces and left-handed spiral flow guide pieces;

[0008] The production method of degradable geotextile using the above equipment is as follows:

[0009] Step 1, the fiber raw material is put into the cotton box device, and the fiber raw material includes hot melt fiber and natural fiber;

[0010] Step 2, the cotton box device is started, and the top chaotic blowing plate and the bottom chaotic blowing plate generate up and down blowing chaotic wind in the box, the chaotic wind acts on the fiber in the box, so that the fiber is more evenly distributed, and the fiber is entangled with each other through the physical action of the chaotic wind force; the fiber is blown by the transverse blowing device, which has a synergistic effect with the top chaotic blowing plate and the bottom chaotic blowing plate, promotes the entanglement of the fiber, and on the other hand, the transverse blowing device blows the entangled fiber to the roller roll, and the entangled fiber is gradually rolled out of the cotton box device by the roller roll, forming a preliminary thick and chaotic interwoven fiber filter cloth;

[0011] Step 3, the fiber filter cloth discharged by the cotton box device is hot-pressed by the hot-pressing device to reduce the thickness of the filter cloth and further improve the strength of the filter cloth.

[0012] In the above technical solution, the downward blowing device includes a top air inlet cover and a top chaotic blowing plate, the top air inlet cover is arranged above the top chaotic blowing plate, and the two are communicated, the top of the top air inlet cover is provided with a first air inlet, air flow is blown into the top air inlet cover through the first air inlet, and then the air flow is blown into the box of the cotton box through the top chaotic blowing plate.

[0013] In the above technical solution, the upward blowing device includes a bottom air inlet cover and a bottom chaotic blowing plate, the bottom air inlet cover is arranged below the bottom chaotic blowing plate, and the two are communicated, the bottom of the bottom air inlet cover is provided with a second air inlet, air flow is blown into the bottom air inlet cover through the second air inlet, and then the air flow is blown into the box of the cotton box through the bottom chaotic blowing plate.

[0014] In the above technical solution, the blowing hole is polygonal in shape.

[0015] In the above technical solution, the blowing hole is circular in shape.

[0016] In the above technical solution, a winding device is arranged behind the hot-pressing device for winding the filter cloth after hot-pressing.

[0017] In the above technical solution, a conveying belt is arranged between the cotton box device and the hot-pressing device.

[0018] In the above technical solution, the natural fiber can be any one or mixture of more than one of cotton fiber, hemp fiber, palm fiber or sugarcane fiber.

[0019] The advantages and beneficial effects of the present application are:

[0020] The present application is provided with top and bottom symmetrical arrangement of the messy blowing plate on the top and bottom of the cotton box device, the messy blowing plate is provided with a plurality of vertical blowing holes in dot matrix, and a spiral guide vane is arranged in each blowing hole, and the spiral guide vane includes two forms of positive spiral guide vane and reverse spiral guide vane.

[0021] The present application is provided with top and bottom symmetrical arrangement of the messy blowing plate on the top and bottom of the cotton box device, the messy blowing plate is provided with a plurality of vertical blowing holes in dot matrix, and a spiral guide vane is arranged in each blowing hole, and the spiral guide vane includes two forms of positive spiral guide vane and reverse spiral guide vane. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The present application is provided with top and bottom symmetrical arrangement of the messy blowing plate on the top and bottom of the cotton box device, the messy blowing plate is provided with a plurality of vertical blowing holes in dot matrix, and a spiral guide vane is arranged in each blowing hole, and the spiral guide vane includes two forms of positive spiral guide vane and reverse spiral guide vane.

[0023] Figure 2 The present application is provided with top and bottom symmetrical arrangement of the messy blowing plate on the top and bottom of the cotton box device, the messy blowing plate is provided with a plurality of vertical blowing holes in dot matrix, and a spiral guide vane is arranged in each blowing hole, and the spiral guide vane includes two forms of positive spiral guide vane and reverse spiral guide vane.

[0024] Figure 3 The present application is provided with top and bottom symmetrical arrangement of the messy blowing plate on the top and bottom of the cotton box device, the messy blowing plate is provided with a plurality of vertical blowing holes in dot matrix, and a spiral guide vane is arranged in each blowing hole, and the spiral guide vane includes two forms of positive spiral guide vane and reverse spiral guide vane.

[0025] For those skilled in the art, other related drawings can be obtained from the above drawings without creative labor. DETAILED DESCRIPTION

[0026] In order to make the personnel in the technical field better understand the present application, the technical scheme of the present application will be further described below in combination with specific embodiments.

[0027] A production method of a degradable geotextile, which adopts a production device, as shown in the accompanying drawings, Figure 1 The production device includes a cotton box device 1 and a hot pressing device 2.

[0028] The cotton box device 1 comprises a box body, a feeding port 11 is arranged on the box body, and fiber raw materials are added into the box body through the feeding port 11; a downward air blowing device 12 is arranged on the top of the box body, an upward air blowing device 13 is arranged on the bottom of the box body, a transverse air blowing device 14 is arranged on one side of the box body, and a pair of roller rollers 15 are arranged at the position of the discharge port opposite to the transverse air blowing device of the box body.

[0029] The downward air blowing device 12 comprises a top air inlet cover 121 and a top chaotic air blowing plate 122, the top air inlet cover 121 is arranged above the top chaotic air blowing plate 122, and the two are communicated; a first air inlet 123 is arranged at the top of the top air inlet cover 121, air flow is blown into the top air inlet cover 121 through the first air inlet 123, and then the air flow is blown into the box body of the cotton box downward through the top chaotic air blowing plate 122.

[0030] The upward air blowing device 13 comprises a bottom air inlet cover 131 and a bottom chaotic air blowing plate 132, the bottom air inlet cover 131 is arranged below the bottom chaotic air blowing plate 132, and the two are communicated; a second air inlet 133 is arranged at the bottom of the bottom air inlet cover 131, air flow is blown into the bottom air inlet cover 131 through the second air inlet 133, and then the air flow is blown into the box body of the cotton box upward through the bottom chaotic air blowing plate 132.

[0031] The top chaotic air blowing plate 122 and the bottom chaotic air blowing plate 132 are arranged in a symmetrical manner, and the top chaotic air blowing plate 122 and the bottom chaotic air blowing plate 132 are arranged in a symmetrical manner. Figure 2 and the bottom chaotic air blowing plate 132 are arranged in a symmetrical manner. Figure 3 The structure of the top chaotic air blowing plate 122 and the bottom chaotic air blowing plate 132 is described in detail.

[0032] The structure of the top chaotic air blowing plate 122 and the bottom chaotic air blowing plate 132 is described in detail. Figure 2 ) or a circular structure (see the bottom chaotic air blowing plate 132); a spiral flow guide piece is arranged in each air blowing hole 41, and the spiral flow guide piece comprises a right-handed spiral flow guide piece 42 and a left-handed spiral flow guide piece 43. Figure 3 Through the above-mentioned air blowing structure, the top chaotic air blowing plate 122 and the bottom chaotic air blowing plate 132 can generate chaotic air blowing upward and downward in the box body, the chaotic air blowing acts on the fibers in the box body, the fibers are more uniformly distributed, and the fibers are entangled with each other through the physical action of the chaotic air blowing force, forming interlacing and entanglement, and strengthening the binding force between the fibers, so that the filter cloth with sufficient strength and stability can be formed.

[0033] The transverse blowing device 14 is used to blow the fibers transversely, which can cooperate with the top and bottom chaotic blowing plates 122 and 132 to promote the mutual entanglement of the fibers, and the transverse blowing device 14 can blow the entangled fibers to the roller roll 15, and the roller roll 15 can gradually roll and press the entangled fibers out of the cotton box device 1 to form a preliminary fiber filter cloth 0 with a large thickness, and then the filter cloth is hot-pressed by the hot-pressing device 2 to reduce the thickness and further improve the strength of the filter cloth.

[0034] Further, the winding device 3 is arranged behind the hot-pressing device 2 to wind the filter cloth after hot-pressing, and the conveying belt 5 is arranged between the cotton box device 1 and the hot-pressing device 2.

[0035] The production method of the degradable geotextile filter cloth by using the above-mentioned equipment is as follows:

[0036] Step 1: The fiber raw material is put into the cotton box device 1, and the fiber raw material includes hot-melt fibers and natural fibers, which can be any one or a mixture of more than one of cotton fibers, hemp fibers, palm fibers or sugarcane fibers.

[0037] Step 2: The cotton box device 1 is started, and the top and bottom chaotic blowing plates 122 and 132 generate up and down blowing chaotic wind in the box, which acts on the fibers in the box to make the fibers more evenly distributed, and the fibers are entangled with each other through the physical action of the chaotic wind force; the transverse blowing device 14 blows the fibers transversely, which can cooperate with the top and bottom chaotic blowing plates 122 and 132 to promote the mutual entanglement of the fibers, and the transverse blowing device 14 blows the entangled fibers to the roller roll 15, and the roller roll 15 gradually rolls and presses the entangled fibers out of the cotton box device 1 to form a preliminary fiber filter cloth 0 with a large thickness.

[0038] Step 3: The fiber filter cloth discharged from the cotton box device 1 is hot-pressed by the hot-pressing device 2 to reduce the thickness and further improve the strength of the filter cloth.

[0039] For ease of description, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to describe the relationship of one element or feature to another element or feature as shown in the drawings. It should be understood that, in addition to the orientation shown in the drawings, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the drawing is inverted, the element described as being "below" other elements or features will be positioned "above" the other elements or features. Therefore, the exemplary term "below" can include both upward and downward orientations. The device can be positioned in other ways (rotated 90 degrees or positioned in other orientations), and the spatial relative description used herein can be interpreted accordingly.

[0040] It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the application. Accordingly, the legal scope of the application is defined only by the appended claims.

Claims

1. A method for producing a degradable geotextile, characterized by: The method adopts a production device, which comprises a cotton box device and a hot pressing device; The cotton box device comprises a box body, an inlet is arranged on the box body, a downward air blowing device is arranged on the top of the box body, an upward air blowing device is arranged on the bottom of the box body, a transverse air blowing device is arranged on one side of the box body, and a roller roller is arranged at the position of the outlet opposite to the transverse air blowing device of the box body; A top chaotic air blowing plate is arranged in the downward air blowing device, and a bottom chaotic air blowing plate is arranged in the upward air blowing device; the top chaotic air blowing plate and the bottom chaotic air blowing plate are arranged in a symmetrical structure and have the same structure, which comprises a plate body, a plurality of vertical air blowing holes are arranged on the plate body in a dot matrix, and a spiral flow guide piece is arranged in each air blowing hole; the spiral flow guide piece comprises a right-handed spiral flow guide piece and a left-handed spiral flow guide piece. The production method of the degradable geotextile by using the above device is as follows: Step 1: the fiber raw material is put into the cotton box device, and the fiber raw material comprises hot melt fiber and natural fiber; Step 2: the cotton box device is started, the top chaotic air blowing plate and the bottom chaotic air blowing plate generate up-down chaotic air in the box body, the chaotic air acts on the fiber in the box body, so that the fiber is more uniformly distributed, and the fiber is twisted with each other through the physical action of the chaotic air force; the transverse air blowing device blows the fiber transversely, which has a synergistic effect with the top chaotic air blowing plate and the bottom chaotic air blowing plate to promote the fiber to be twisted with each other, and on the other hand, the transverse air blowing device blows the twisted fiber to the roller roller, the twisted fiber is gradually rolled and pressed out of the cotton box device by the roller roller, and a preliminary chaotic interwoven fiber filter cloth is formed; Step 3: the fiber filter cloth discharged from the cotton box device is hot pressed by the hot pressing device to reduce the thickness of the filter cloth and further improve the strength of the filter cloth.

2. The method of producing a degradable geotextile according to claim 1, characterized in that: The downward air blowing device comprises a top air inlet hood and a top chaotic air blowing plate, the top air inlet hood is arranged above the top chaotic air blowing plate, and the two are communicated, a first air inlet is arranged at the top of the top air inlet hood, air flow is blown into the top air inlet hood through the first air inlet, and then the air flow is blown into the box body of the cotton box downward through the top chaotic air blowing plate.

3. The method of producing a degradable geotextile according to claim 1, characterized in that: The upward air blowing device comprises a bottom air inlet hood and a bottom chaotic air blowing plate, the bottom air inlet hood is arranged below the bottom chaotic air blowing plate, and the two are communicated, a second air inlet is arranged at the bottom of the bottom air inlet hood, air flow is blown into the bottom air inlet hood through the second air inlet, and then the air flow is blown into the box body of the cotton box upward through the bottom chaotic air blowing plate.

4. The method of producing a degradable geotextile according to claim 1, characterized in that: The air blowing hole is polygonal in shape.

5. The method of producing degradable geotextile fabric according to claim 1, characterized in that: The air blowing hole is circular in shape.

6. The method of producing degradable geotextile fabric according to claim 1, characterized in that: A winding device is arranged behind the hot pressing device for winding the filter cloth after hot pressing.

7. The method of producing a degradable geotextile fabric according to claim 1, characterized in that: A conveying belt is arranged between the cotton box device and the hot pressing device.

8. The method of producing degradable geotextile fabric according to claim 1, characterized in that: The natural fiber is any one or mixture of more than one of cotton fiber, hemp fiber, palm fiber or sugarcane fiber.

Images