Grassland ecological restoration degradable mulching film

Abstract

This utility model provides a biodegradable mulch film for grassland ecological restoration, relating to the field of biodegradable mulch films. It includes a grassland ecological film and a film roller assembly. The grassland ecological film is wound around the outside of the film roller assembly. Positioning elements are provided along the two long edges of the grassland ecological film, and a planting ring is provided in the middle of the film. A tear strip is connected to the edge of the planting ring. The film roller assembly includes a drum, and a shaft is rotatably connected inside the drum. Anti-slip rings are provided at both ends of the drum. A spring is movably connected to the outer wall of the shaft, and a compression block is connected to the inner side of the spring. This utility model facilitates fixing the edges of the mulch film during laying, improving laying efficiency, and maintaining stable mulch film during laying. It also allows for adjustment of the planting hole size.

Description

Technical Field

[0001] This utility model relates to the field of biodegradable mulch film technology, specifically to a biodegradable mulch film for grassland ecological restoration. Background Technology

[0002] Because plastic film leaves residue on the soil, it needs to be recycled before sowing the following year after crop harvest. The recycling process is costly. If plastic film is used for a long time without recycling, it will seriously affect the soil's physical and chemical structure, the adaptability of field machinery, and the safety of animal husbandry. Therefore, biodegradable plastic film materials have emerged in existing technologies, allowing for direct application into the soil for degradation after crop harvest. A search revealed existing technology (publication number: CN222751044U), which describes "a biodegradable plastic film with perforations, the film having a three-layer composite structure, from bottom to top including a paper base layer, a nutrient layer, and a waterproof and light-blocking layer; the film has evenly arranged cross-shaped perforations, each cross-shaped perforation including four intermittently cut lines with the same starting point, each intermittently cut line penetrating the paper base layer, nutrient layer, and waterproof and light-blocking layer; each intermittently cut line has a drainage groove, the drainage groove being symmetrically arranged about the intermittently cut line as an axis of symmetry, with the tip of the drainage groove facing the intersection of the four intermittently cut lines. This utility model's plastic film is biodegradable, easy to perforate, and has a drainage function."

[0003] When the biodegradable mulch film mentioned in the above patent documents is used, it needs to be easy to lay along the ridges and then be fixed by burying soil at its edges, which results in poor laying efficiency. It also requires many people to fix it on both sides of the ridges, which is time-consuming and labor-intensive. Secondly, when laying manually, it is not easy to control the rotation speed of the mulch film roll to match the walking speed of the workers. It is easy for the film to fold due to high rotation speed or to be stretched due to slow rotation speed. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a biodegradable mulch film for grassland ecological restoration is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, a biodegradable mulch film for grassland ecological restoration is provided, comprising: a grassland ecological film and a film roller assembly. The grassland ecological film is wound around the outside of the film roller assembly. Positioning elements are provided on both sides of the long edge of the grassland ecological film, and a planting ring is provided in the middle of the grassland ecological film. A tear strip is connected to the edge of the planting ring. The film roller assembly includes a roll, and a shaft is rotatably connected inside the roll. Anti-slip rings are provided at both ends of the roll. A spring is movably connected to the outer wall of the shaft, and a compression block is connected to the inner side of the spring.

[0006] Furthermore, the non-positioning components are evenly spaced along the edge of the grassland ecological membrane, and the positioning components include a conical shell with an internal cavity inside.

[0007] Furthermore, when the grassland ecological membrane is unfolded and laid flat, the conical shell has an upper pressing plate at its upper end and a lower pressing plate at its lower end, and the upper pressing plate and the lower pressing plate are respectively bonded to the upper and lower surfaces of the grassland ecological membrane.

[0008] Furthermore, the planting circle is designed as a concentric circle structure, and the planting circle is designed as a circular intermittent cut line opened on the surface of the grassland ecological membrane.

[0009] Furthermore, the outer wall of the shaft is provided with a hinge groove, and a pin is provided in the hinge groove. The lower end of the spring piece is placed in the hinge groove and is rotatably connected to the pin.

[0010] Furthermore, the extrusion block is designed as a semi-circular structure, and both the extrusion block and the spring sheet are symmetrically arranged about the drum.

[0011] Furthermore, the grassland ecological membrane is made of natural biomass material, and the length of the positioning element is greater than the thickness of the grassland ecological membrane.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By using positioning devices, when laying the mulch film, the operator moves from one end of the ridge to the other, covering one end of the mulch film with the other end of the ridge. The cone-shaped shells included in the positioning devices are inserted into the soil. During the movement, the positioning devices on both sides of the mulch film fall to the ground due to their weight. At this time, the operator directly steps into the soil while moving, thus avoiding the process of turning over the soil for compaction. This allows a single person to lay and fix the edge of the mulch film at the same time, improving the laying efficiency.

[0014] 2. By utilizing the roll, anti-slip ring, spring sheet, and extrusion block included in the film roller assembly, during the laying process, the spring sheet can be squeezed inward by the thumb while holding the shaft handle. The spring sheet then pushes the extrusion block to rub against the anti-slip ring, which facilitates the control of the roll speed during movement. This allows the roll to rotate in accordance with the movement speed to guide the grassland ecological film, avoiding folding or pulling, and achieving a stable unfolding and laying effect for the grassland ecological film. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the axial structure of an embodiment of the present utility model.

[0016] Figure 2 This is a top view of the unfolded grassland ecological membrane according to an embodiment of the present invention.

[0017] Figure 3 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point A in the middle.

[0018] Figure 4This is a schematic cross-sectional view of the membrane roller assembly according to an embodiment of the present invention.

[0019] In the diagram: 1. Grassland ecological film; 11. Planting ring; 12. Tear strip; 13. Positioning component; 131. Upper pressing sheet; 132. Lower pressing sheet; 133. Conical shell; 134. Inner cavity; 2. Film roller assembly; 21. Roller; 211. Anti-slip ring; 22. Shaft handle; 221. Hinge groove; 222. Pin; 23. Spring; 24. Extrusion block. Detailed Implementation

[0020] Reference Figures 1 to 4 As shown, this utility model provides a biodegradable mulch film for grassland ecological restoration, including: grassland ecological film 1 and film roller assembly 2. The grassland ecological film 1 is wound around the outside of the film roller assembly 2. Positioning members 13 are provided on both sides of the long edge of the grassland ecological film 1, and a planting ring 11 is provided in the middle of the grassland ecological film 1. The edge of the planting ring 11 is connected to a tear strip 12. The film roller assembly 2 includes a roll 21, and a shaft 22 is rotatably connected inside the roll 21. Anti-slip rings 211 are provided at both ends of the roll 21. A spring piece 23 is movably connected to the outer wall of the shaft 22, and a compression block 24 is connected to the inner side of the spring piece 23.

[0021] In this embodiment, the grassland ecological film 1 and the film roller assembly 2 constitute the main structure of the biodegradable mulch film for grassland ecological restoration involved in this application. The grassland ecological film 1 is made of natural biomass materials, including starch, cellulose, chitin, etc. By modifying and resynthesizing these raw materials, the production raw materials for biodegradable mulch film can be formed.

[0022] Specifically, the positioning component 13 is made of starch-based plastic, which is a starch composite material with added plasticizers such as glycerin, and can be degraded in soil.

[0023] It should be noted that the grassland ecological film 1 is rolled up before use, and the positioning members 13 are inserted together in the rolled state. The spacing between the positioning members 13 after unrolling decreases as the outer diameter of the film outside the roll 21 gradually decreases.

[0024] It should be noted that the grassland ecological film 1 involved in this application can also be used in a non-rolling manner, that is, in a folding manner, abandoning the use of the film roller assembly 2. When laying, it is unfolded as a whole, covering the ridge, and then inserted into the soil by the positioning piece 13.

[0025] like Figures 1 to 2In the process, the positioning elements 13 are not equidistantly arranged at the edge of the grassland ecological film 1, and the positioning elements 13 include a conical shell 133, and the conical shell 133 has an inner cavity 134. When the grassland ecological film 1 is unfolded and laid flat, the upper end of the conical shell 133 is provided with an upper pressure plate 131 and the lower end is provided with a lower pressure plate 132. The upper pressure plate 131 and the lower pressure plate 132 are respectively bonded to the upper and lower surfaces of the grassland ecological film 1. The planting ring 11 is designed as a concentric circle structure, and the planting ring 11 is designed as a circular intermittent cutting line opened on the surface of the grassland ecological film 1. The outer wall of the shaft 22 is provided with a hinge groove 221, and a pin 222 is provided in the hinge groove 221. The lower end of the spring piece 23 is placed in the hinge groove 221 and is rotatably connected to the pin 222. The extrusion block 24 is designed as a semi-circular structure, and the extrusion block 24 and the spring piece 23 are symmetrically arranged about the roll 21.

[0026] Specifically, the length of the positioning element 13 is greater than the thickness of the grassland ecological film 1, and the upper pressure plate 131 and the lower pressure plate 132 hold the film in the middle.

[0027] It should be noted that when operating alone, it is necessary to ensure that a person can stand on both sides of the furrow without affecting their movement. At the same time, during the movement, the positioning part 13 (center of gravity downward) should be stepped into the soil as soon as it touches the ground. When the gap between the ridges is too large, one person needs to lay it out and another person needs to insert the positioning part 13 into the soil from the rear.

[0028] Specifically, depending on the required hole size for crop planting, the edges of planting rings 11 of different diameters can be intermittently cut open using the tear strip 12, thus enabling the creation of planting holes with different inner diameters.

[0029] Specifically, the spring 23 is designed as an elastic metal sheet structure, and the compression block 24 is made of stainless steel to achieve friction with the anti-slip ring 211.

[0030] During use, the positioning components allow the operator to move from one end of the ridge to the other, covering one end of the grassland ecological film with the other end of the ridge. The conical shells included in the positioning components are inserted into the soil. As the operator moves, the positioning components on both sides of the grassland ecological film sink to the ground under their weight, allowing them to be directly stepped into the soil, thus avoiding the need for tilling and compaction. This allows for single-person installation and simultaneous edge fixing of the grassland ecological film, improving installation efficiency. The film roller assembly, including the drum, anti-slip ring, spring clips, and compression blocks, allows the operator to hold the shaft handle and squeeze the spring clips inward with their thumb. The spring clips then push the compression blocks against the anti-slip rings, facilitating control of the drum's rotation speed during movement. This ensures the drum rotates in sync with the operator's movement, guiding the grassland ecological film and preventing folding or pulling, resulting in a stable and effective installation.

[0031] This utility model of biodegradable mulch for grassland ecological restoration effectively solves the problems raised in the background technology. Based on the existing biodegradable mulch technology for grassland ecological restoration, it has the advantages of facilitating the fixing of the mulch edge during laying, improving laying efficiency, maintaining the mulch's stable opening during laying, and adjusting the size of the planting holes.

Claims

1. A biodegradable mulch film for grassland ecological restoration, comprising: Grassland ecological film (1) and film roller assembly (2), wherein the grassland ecological film (1) is wound around the outside of the film roller assembly (2), characterized in that: the two long edges of the grassland ecological film (1) are provided with positioning parts (13), and the middle part of the grassland ecological film (1) is provided with a planting ring (11), and the edge of the planting ring (11) is connected with a tear strip (12), the film roller assembly (2) includes a roll (21), and the inside of the roll (21) is rotatably connected with a shaft (22), and anti-slip rings (211) are provided at both ends of the roll (21), and the outer wall of the shaft (22) is movably connected with a spring piece (23), and the inner side of the spring piece (23) is connected with a pressing block (24).

2. The biodegradable mulch film for grassland ecological restoration according to claim 1, characterized in that, The positioning element (13) is not evenly spaced at the edge of the grassland ecological membrane (1), and the positioning element (13) includes a conical shell (133), and the conical shell (133) has an inner cavity (134).

3. The biodegradable mulch film for grassland ecological restoration according to claim 2, characterized in that, When the grassland ecological membrane (1) is unfolded and laid flat, the conical shell (133) has an upper pressing plate (131) at its upper end and a lower pressing plate (132) at its lower end, and the upper pressing plate (131) and the lower pressing plate (132) are respectively bonded to the upper and lower surfaces of the grassland ecological membrane (1).

4. The biodegradable mulch film for grassland ecological restoration according to claim 1, characterized in that, The planting circle (11) is designed as a concentric circle structure, and the planting circle (11) is a circular intermittent cut line opened on the surface of the grassland ecological membrane (1).

5. The biodegradable mulch film for grassland ecological restoration according to claim 1, characterized in that, The outer wall of the shaft (22) is provided with a hinge groove (221), and a pin (222) is provided in the hinge groove (221). The lower end of the spring piece (23) is placed in the hinge groove (221) and is rotatably connected to the pin (222).

6. The biodegradable mulch film for grassland ecological restoration according to claim 1, characterized in that, The extrusion block (24) is designed as a semi-circular structure, and both the extrusion block (24) and the spring sheet (23) are symmetrically arranged about the drum (21).

7. The biodegradable mulch film for grassland ecological restoration according to claim 1, characterized in that, The grassland ecological membrane (1) is made of natural biomass material, and the length of the positioning element (13) is greater than the thickness of the grassland ecological membrane (1).

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