Heavy clay soil improvement device

Abstract

The utility model discloses a heavy clay soil improvement device. The device comprises soil; the water inlet assemblies are arranged in the soil, each water inlet assembly comprises an outer sleeve vertically inserted into the soil, a plurality of first communicating holes are formed in the surface of each outer sleeve, and a partition plate is arranged at the position, close to the bottom, of the interior of each outer sleeve. When the communicating area of the first communicating hole and the second communicating hole is small, water is concentrated near the root system of the plant, the device is suitable for the plant with small root system distribution, the water utilization efficiency can be improved, and the problem that when the water flow is too large, due to the fact that protection of the root system is not achieved, soil erosion is caused by water flow can be solved; when the communication area of the first communication hole and the second communication hole is large, water flow can be diffused to a farther distance in the soil, so that a larger range is covered, and the device is suitable for plants with developed root systems.

Description

Technical Field

[0001] This utility model relates to the field of soil improvement technology, and in particular to a device for improving heavy clay soil. Background Technology

[0002] Heavy clay is a type of clay with a clay content of more than 60%. Clay contains a lot of fine particles, has a low internal friction coefficient and high cohesion, low permeability and strong water absorption capacity, and significant capillary action. When dry, clay is relatively hard and not easy to break during construction. When wet, it can retain moisture for a long time and does not easily evaporate, thus having low bearing capacity.

[0003] The patent with publication number CN221842954U injects stored rainwater or irrigation water into the soil through an inlet pipe and injects it into different layers of the soil through outlet holes on the side wall to improve water absorption by plants. However, the size of the outlet holes of the inlet pipe is fixed. For plants with relatively small root systems, if the water flow is too large, the lack of protection from the developed root system will cause the water to wash away the fertile soil, thus leading to soil erosion. In view of this, a heavy clay soil improvement device is proposed to solve this problem. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] A soil amendment device for heavy clay soil includes:

[0006] soil;

[0007] Multiple water inlet components are installed in the soil. Each water inlet component includes an outer sleeve vertically inserted into the soil. The outer sleeve has multiple sets of connecting holes I on its surface. A partition is installed inside the outer sleeve near its bottom. An inner sleeve is coaxially installed inside the outer sleeve above the partition. The inner sleeve has connecting holes II on its surface that correspond one-to-one with the number and position of the connecting holes I. A rotating rod is rotatably connected to the center of the partition. The top of the rotating rod passes through the inner sleeve. The rotating rod has a threaded section and is threadedly connected to the inner sleeve through the threaded section. Driving the rotating rod to rotate causes the inner sleeve to move up and down, controlling the communication area between the connecting holes I and the connecting holes II.

[0008] As an improvement to the above technical solution, a limiting plate is provided on the surface of the rotating rod and at the top of the threaded section.

[0009] As an improvement to the above technical solution, the soil includes a native soil layer, a water-filtering layer laid on top of the native soil layer, a water-retaining layer laid on top of the water-filtering layer, an air-permeable layer laid on top of the water-retaining layer, and a planting nutrient layer laid on top of the air-permeable layer.

[0010] As an improvement to the above technical solution, the breathable layer includes a straw layer laid on top of the water-retaining layer and a wood ash layer laid on top of the straw layer.

[0011] As an improvement to the above technical solution, planting bricks are laid on top of the soil, and planting troughs are opened in the middle of the planting bricks.

[0012] As an improvement to the above technical solution, the partition plate has multiple sets of through holes, the bottom edge of the inner sleeve has a through hole that communicates with the inside of the outer sleeve, the lower end of the outer sleeve is connected to a connecting pipe, and the two ends of the connecting pipe are respectively connected to drain pipes.

[0013] As an improvement to the above technical solution, the outer wall of the outer sleeve is wrapped with geotextile.

[0014] The beneficial effects of this utility model are:

[0015] The outflow of water can be controlled by adjusting the connection area between the first and second connecting holes. When the connection area between the first and second connecting holes is small, the water is concentrated near the plant roots, which is suitable for plants with small root distribution. This can improve water use efficiency and avoid soil erosion caused by excessive water flow due to the lack of root protection. When the connection area between the first and second connecting holes is large, the water can spread to a greater distance in the soil, thus covering a larger area, which is suitable for plants with well-developed root systems. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the water inlet assembly of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the breathable layer of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the outer sleeve and the inner sleeve of this utility model.

[0021] Attached reference numerals: 10, planting brick; 101, planting trough; 11, planting nutrient layer; 12, air-permeable layer; 121, wood ash layer; 122, straw layer; 13, water-retaining layer; 14, water-filtering layer; 15, original soil layer; 20, water inlet assembly; 21, outer sleeve; 211, connecting hole one; 212, through hole one; 213, partition; 22, inner sleeve; 221, connecting hole two; 222, through hole two; 23, rotating rod; 231, threaded section; 24, geotextile; 25, connecting pipe; 26, drainage pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] A soil improvement device for heavy clay includes soil, the soil including a soil layer 15, a water-filtering layer 14 laid on top of the soil layer 15, a water-retaining layer 13 laid on top of the water-filtering layer 14, an air-permeable layer 12 laid on top of the water-retaining layer 13, and a planting nutrient layer 11 laid on top of the air-permeable layer 12.

[0024] refer to Figure 1 A filter layer 14 is laid on top of the original soil layer 15. The filter layer 14 is a gravel filter layer, which can filter out rainwater or irrigation water to avoid excessive water content. The water retention layer 13 can retain water to prevent water loss too quickly. The aeration layer 14 can ensure the aeration of the soil, which helps the growth and expansion of plant roots. The planting nutrient layer 11 provides the nutrients needed for plant growth.

[0025] In one embodiment, reference Figure 4 The breathable layer 12 includes a straw layer 122 laid on top of the water-retaining layer 13 and a wood ash layer 121 laid on top of the straw layer 122.

[0026] The straw layer 122 can improve the soil's aeration performance, while the wood ash layer 121 can disinfect pests in the straw layer and promote the activity of soil microorganisms by the minerals in the wood ash, accelerating the decomposition of straw, forming more organic matter, and further improving the soil's aeration performance.

[0027] In one embodiment, reference Figure 1 Planting bricks 10 are laid on top of the soil, and planting troughs 101 are formed in the middle of the planting bricks 10;

[0028] Planting bricks 10 can prevent rainwater or irrigation water from directly impacting the soil and prevent soil erosion. Planting troughs 101 can fix the spacing between adjacent plants, thereby reducing the entanglement of plant roots and preventing excessive root crowding.

[0029] In one embodiment, reference Figure 2 as well as Figure 3 Multiple sets of water inlet components 20 are disposed in the soil. Each water inlet component 20 includes an outer sleeve 21 vertically inserted into the soil. The outer sleeve 21 has multiple sets of connecting holes 211 on its surface. A partition 213 is disposed inside the outer sleeve 21 near its bottom. An inner sleeve 22 is disposed coaxially inside the outer sleeve 21 and above the partition 213. The inner sleeve 22 has connecting holes 221 on its surface that correspond one-to-one in number and position to the connecting holes 211. A rotating rod 23 is rotatably connected to the center of the partition 213. The top of the rotating rod 23 passes through the inner sleeve 22. The rotating rod 23 has a threaded section 231. The rotating rod 23 is threadedly connected to the inner sleeve 22 through the threaded section 231. Driving the rotating rod 23 to rotate causes the inner sleeve 22 to move up and down, controlling the communication area between the connecting holes 211 and 221.

[0030] Staff can adjust the connection area between connecting hole 1 211 and connecting hole 2 221 according to the needs of the plant to control the water outflow. When the connection area between connecting hole 1 211 and connecting hole 2 221 is small, the water is concentrated near the plant roots, which is suitable for plants with small root distribution. This can improve water use efficiency and avoid soil erosion caused by excessive water flow due to the lack of root protection. When the connection area between connecting hole 1 211 and connecting hole 2 221 is large, the water can spread to a greater distance in the soil, thus covering a larger area, which is suitable for plants with well-developed root systems.

[0031] When it is necessary to adjust the connection area between the first connecting hole 211 and the second connecting hole 221, the rotating rod 23 is rotated. The rotating rod 23 drives the inner sleeve 22 to move upward through the threaded section 231, increasing the connection area between the first connecting hole 211 and the second connecting hole 221. When the rotating rod 23 is rotated in the opposite direction, the connection area between the first connecting hole 211 and the second connecting hole 221 can be reduced. By cooperating with multiple sets of the first connecting hole 211 and the second connecting hole 221, water can be injected between different layers of the soil 1, improving the water absorption of the plants. When the connection area between the first connecting hole 211 and the second connecting hole 221 is at its maximum, the top end face of the inner sleeve 22 is flush with the top end face of the outer sleeve 21, so that rainwater or irrigation water cannot enter the inner sleeve 22 after the height of the inner sleeve 22 exceeds that of the outer sleeve 21.

[0032] Among them, reference Figure 5 The outer sleeve 21 and the inner sleeve 22 are movably connected. The outer circumferential surface of the inner sleeve 22 is provided with multiple sets of protrusions. The inner wall of the outer sleeve 21 is provided with grooves that match the protrusions, so that the inner sleeve 22 can only move along the axis of the outer sleeve 21, so as to avoid the problem of relative rotation between the outer sleeve 21 and the inner sleeve 22.

[0033] In one embodiment, reference Figure 3 A limiting plate is provided on the surface of the rotating rod 23 and at the top of the threaded section 231.

[0034] By limiting the highest position of the inner sleeve 22 with a limiting plate, it is possible to effectively prevent the top end face of the inner sleeve 22 from being higher than the top end face of the outer sleeve 21.

[0035] In one embodiment, reference Figure 3 as well as Figure 1 The partition 213 has multiple sets of through holes 212, and the inner sleeve 22 has a through hole 222 at the bottom edge that communicates with the inside of the outer sleeve 21. The lower end of the outer sleeve 21 is connected to a connecting pipe 25, and the two ends of the connecting pipe 25 are respectively connected to drain pipes 26.

[0036] Rainwater entering the inner sleeve 22 enters the connecting pipe 25 through the cooperation of through hole 1 212 and through hole 222. The water discharged through the connecting pipe 25 is collected and then discharged through the drain pipe 26 to avoid the rot of plant roots due to excessive water.

[0037] To prevent soil from entering and clogging the connecting hole 211, the outer wall of the outer sleeve 21 is wrapped with geotextile 24. The geotextile 24 protects the outer sleeve 21 and effectively prevents the connecting hole 211 from becoming clogged.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A soil amendment device for heavy clay soil, characterized in that, include: soil; Multiple sets of water inlet components (20) are installed in the soil. Each water inlet component (20) includes an outer tube (21) vertically inserted into the soil. The outer tube (21) has multiple sets of connecting holes (211) on its surface. A partition (213) is provided inside the outer tube (21) near its bottom. An inner sleeve (22) is coaxially provided inside the outer tube (21) and above the partition (213). The surface of the inner sleeve (22) has connecting holes (211) corresponding to the number and position of the connecting holes (211). (221) A rotating rod (23) is rotatably connected at the center of the partition (213). The top of the rotating rod (23) passes through the inner sleeve (22). A threaded section (231) is provided on the rotating rod (23). The rotating rod (23) is threadedly connected to the inner sleeve (22) through the threaded section (231). The rotating rod (23) is driven to rotate. The rotating rod (23) drives the inner sleeve (22) to move up and down, controlling the communication area between the first communication hole (211) and the second communication hole (221).

2. The heavy clay soil improvement device according to claim 1, characterized in that: A limiting plate is provided on the surface of the rotating rod (23) and at the top of the threaded section (231).

3. The heavy clay soil improvement device according to claim 2, characterized in that: The soil includes a native soil layer (15), a water-filtering layer (14) is laid on top of the native soil layer (15), a water-retaining layer (13) is laid on top of the water-filtering layer (14), an air-permeable layer (12) is laid on top of the water-retaining layer (13), and a planting nutrient layer (11) is laid on top of the air-permeable layer (12).

4. The heavy clay soil improvement device according to claim 3, characterized in that: The breathable layer (12) includes a straw layer (122) laid on top of the water-retaining layer (13) and a wood ash layer (121) laid on top of the straw layer (122).

5. The heavy clay soil improvement device according to claim 2, characterized in that: Planting bricks (10) are laid on top of the soil, and planting troughs (101) are opened in the middle of the planting bricks (10).

6. The heavy clay soil improvement device according to claim 1, characterized in that: The partition (213) has multiple sets of through holes (212), and the inner sleeve (22) has a through hole (222) at the bottom edge that communicates with the inside of the outer sleeve (21). The lower end of the outer sleeve (21) is connected to a connecting pipe (25), and the two ends of the connecting pipe (25) are respectively connected to drain pipes (26).

7. The heavy clay soil improvement device according to claim 1, characterized in that: The outer wall of the outer sleeve (21) is wrapped with geotextile (24).

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