Degenerated forest land soil remediation device based on composite organic material

Abstract

The invention discloses a degenerated forest land soil remediation device based on a composite organic material, and relates to the technical field of soil remediation, the degenerated forest land soil remediation device comprises a support provided with a vehicle connecting mechanism; the multiple repairing assemblies are distributed at the bottom of the support in a linear arrangement mode, and each repairing assembly comprises a shell with an inlet formed in the top and an outlet formed in the bottom; the lower turntable and the upper turntable are respectively arranged on two sides in the shell through bearings; a plurality of arc-shaped shovels are uniformly distributed on the lower rotating disc in the circumferential direction, and a plurality of stirring shafts extending in the radial direction are arranged on the upper rotating disc in the circumferential direction; the stock bin is arranged on the upper portion of the support and communicates with the interiors of the shells through a plurality of connecting pipes, compared with the prior art, the problems of soil adhesion, aggregate deconstruction and material permeation are solved, and an efficient and low-consumption solution is provided for degraded forest land soil remediation.

Description

Technical Field

[0001] The invention relates to the technical field of soil restoration, in particular to a degraded forestland soil restoration device based on composite organic materials. Background Art

[0002] Due to long-term erosion, nutrient loss, lack of organic matter and imbalance of microbial communities, degraded forest soils have difficulty in vegetation restoration and reduced soil and water conservation capacity, which seriously threatens regional ecological security and carbon sink function. According to statistics, the global area of ​​degraded forests has exceeded 2 billion hectares, and the organic matter content of their soils is generally less than 1.5%, and the permeability is less than 30% of that of healthy soils. Restoring its physical and chemical properties and biological activity through soil remediation technology is a key link in rebuilding forest ecosystems and improving land productivity.

[0003] At present, the mainstream soil remediation devices are mainly divided into the following three categories, but all of them have significant technical bottlenecks: Mechanical tillage remediation device: The soil is turned over by a shovel or a plow blade to mix the remediation materials. Traditional shovels are prone to form a "mud cake effect" in heavy clay soils, with an adhesion rate of up to 40%-60%, requiring frequent shutdowns for cleaning, and reducing operating efficiency by more than 30%. Relying solely on physical cutting, the crushing rate of soil aggregates with a diameter of >5cm is less than 50%, making it difficult for remediation materials to penetrate deep layers.

[0004] Liquid injection remediation device: The liquid remediation agent is injected into the soil through a high-pressure pump. The liquid diffusion radius in clay or compacted soil is less than 20cm, the remediation uniformity is poor, and a large amount of water resources are consumed. Solid organic remediation materials (such as biochar and humic acid) cannot be used directly, which limits the remediation effect.

[0005] Static mixing repair device: Mix the surface soil through a fixed stirring rod. The effective action depth is ≤15cm and cannot reach the root activity layer (20cm-40cm). Solid repair materials are easy to accumulate on the surface, and the permeability is <10%, requiring secondary artificial covering.

[0006] Therefore, it is necessary to provide a degraded forest soil remediation device based on composite organic materials to overcome the three major technical difficulties of soil adhesion, aggregate decomposition and material penetration, and provide an efficient and low-consumption solution for the remediation of degraded forest soil. Summary of the invention

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a degraded forest soil remediation device based on composite organic materials, comprising: a bracket, the bracket is equipped with a vehicle connection mechanism; a plurality of remediation components are linearly arranged at the bottom of the bracket; the remediation components include: an outer shell, the top is provided with an inlet and the bottom is provided with an outlet; a lower turntable and an upper turntable are respectively arranged on both sides of the inner shell through bearings; the lower turntable is evenly distributed with a plurality of arc-shaped shovel blades along the circumference, and the upper turntable is provided with a plurality of radially extending stirring shafts along the circumference; a silo is arranged at the upper part of the bracket and is connected to the interior of each outer shell through a plurality of connecting pipes.

[0008] Furthermore, the first rotating shaft and the second rotating shaft are arranged in parallel in the bracket, the first rotating shaft is fixedly connected to each upper turntable, and the second rotating shaft is fixedly connected to each lower turntable; a transmission gear set connects the first rotating shaft and the second rotating shaft to form a reverse transmission structure; a driving device is arranged on the bracket and is transmission-connected to the first rotating shaft.

[0009] Furthermore, each of the connecting pipes is provided with a metering feeding mechanism.

[0010] Furthermore, a plurality of rotating blocks are distributed circumferentially in the upper turntable, and a plurality of stirring shafts are distributed in each of the rotating blocks.

[0011] Furthermore, a gear is fixed to a side of each rotating block away from the lower turntable, a gear ring concentric with the upper turntable is fixed to the side wall of the shell, and the gear ring is meshed with each gear in the corresponding upper turntable.

[0012] Furthermore, a rotating drum is fixed at the center of the upper rotating disk, and a plurality of baffles are distributed around the outer wall of the rotating drum.

[0013] Furthermore, the side wall of the rotating drum is provided with air holes, the first rotating shaft is a hollow shaft, and the first rotating shaft is provided with side holes at each position in the rotating drum, one end of the first rotating shaft is connected to an air duct via a bearing, and the air duct is connected to the blower in the bracket.

[0014] Furthermore, a stop ring which is concentric with the rotating drum and concentric with the upper rotating disk is fixed to the side wall of the shell, the stop ring is fitted with the inner wall of the rotating drum, and the stop ring is provided with a notch in the direction toward the lower rotating disk.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention realizes the reverse synchronous rotation of the lower turntable (counterclockwise) and the upper turntable (clockwise) through the transmission gear set to form a shear mixing space. Test data show that this design greatly improves the mixing efficiency compared with traditional one-way mixing, and the processing speed per unit area reaches 120m³ / h. The rotating block rotates under the meshing of the gear ring (speed ratio 1:3.5), and cooperates with the revolution of the stirring shaft to form a three-dimensional eddy field, realizing the complete deconstruction of soil aggregates, and can break soil blocks with a diameter of ≤15cm, with an adhesion residue rate of <2.3%. Each rotating block is equipped with 2-4 radially staggered stirring shafts to form an axial-radial composite flow field, and the mixing uniformity is more than 95%.

[0017] The arc-shaped baffle in the present invention constitutes a volumetric metering unit, which cooperates with a rotation speed of 30rpm-60rpm to achieve precise feeding of 0.5kg / s-2.3kg / s. The 0.2MPa-0.5MPa wind pressure forms a 15-25m / s high-speed airflow through the Φ3mm wind hole, so that the atomized particle size of the repair material is ≤150μm, which can improve the coverage uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the repair component in the present invention;

[0020] Figure 3 is a schematic diagram of the cross-sectional structure of the repair component in the present invention;

[0021] Figure 4 It is a schematic diagram of the back structure of the upper turntable in the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the rotary drum in the present invention;

[0023] In the figure: 1. bracket; 2. repair component; 21. shell; 211. inlet; 212. outlet; 22. lower turntable; 23. shovel; 24. upper turntable; 25. rotating block; 251. gear; 252. gear ring; 26. stirring shaft; 27. rotating drum; 271. air hole; 272. gear ring; 273. notch; 28. baffle; 3. silo; 31. connecting pipe; 4. first rotating shaft; 41. side hole; 42. air duct; 5. second rotating shaft; 6. driving device; 7. transmission gear set; 8. blower. DETAILED DESCRIPTION

[0024] See also Figure 1-Figure 5 In an embodiment of the present invention, a degraded forest soil restoration device based on composite organic materials comprises:

[0025] A bracket 1, wherein the bracket 1 is provided with a vehicle connection mechanism;

[0026] A plurality of repair components 2 are arranged in a straight line at the bottom of the bracket 1; the repair component 2 comprises: a housing 21, a top portion of which is provided with an inlet 211, and a bottom portion of which is provided with an outlet 212;

[0027] The lower turntable 22 and the upper turntable 24 are respectively arranged on both sides of the interior of the housing 21 through bearings;

[0028] The lower turntable 22 is provided with a plurality of arc-shaped shovel blades 23 evenly distributed along the circumference, and the upper turntable 24 is provided with a plurality of radially extending stirring shafts 26 along the circumference;

[0029] The silo 3 is disposed on the upper portion of the support 1 and is connected to the interior of each housing 21 through a plurality of connecting pipes 31 .

[0030] In this embodiment, it also includes: a first rotating shaft 4 and a second rotating shaft 5, which are arranged in parallel in the bracket 1, the first rotating shaft 4 is fixedly connected to each upper turntable 24, and the second rotating shaft 5 is fixedly connected to each lower turntable 22; a transmission gear set 7, connecting the first rotating shaft 4 and the second rotating shaft 5 to form a reverse transmission structure; a driving device 6, which is arranged on the bracket 1 and is transmission-connected to the first rotating shaft 4.

[0031] That is to say, the driving device 6 can drive the first rotating shaft 4 and the second rotating shaft 5 to rotate in the opposite direction, thereby driving each lower turntable 22 and the upper turntable 24 to rotate in the opposite direction. When the bracket 1 is pulled forward by the vehicle, the shovel blades 23 in the lower turntable 22 continue to scoop up the soil and enter the outer shell 21 from the inlet 211. At the same time, the repair material is continuously put into the outer shell 21 from the connecting pipe 31. The stirring shaft 26 in the upper turntable 24 stirs the soil and the repair material between the shovel blades 23 evenly. The stirring shaft 26 can prevent the soil from being stuck between the shovel blades 23 and mix the repair material into the soil.

[0032] In this embodiment, each of the connecting pipes 31 is provided with a metering feeding mechanism.

[0033] In this embodiment, a plurality of rotating blocks 25 are distributed on the circumference of the upper rotating disk 24 , and a plurality of stirring shafts 26 are distributed in each of the rotating blocks 25 .

[0034] In this embodiment, a gear 251 is fixed to a side of each rotating block 25 away from the lower turntable 22 , a gear ring 252 concentric with the upper turntable 24 is fixed to the side wall of the housing 21 , and the gear ring 252 meshes with each gear 251 in the corresponding upper turntable 24 .

[0035] That is, when the upper turntable 24 rotates, each rotating block 25 will also rotate, so that each stirring shaft 26 in the rotating block 25 can rotate between the shovel blades 23 to fully stir and remove the soil between the shovel blades 23.

[0036] In this embodiment, a rotating drum 27 is fixed at the center of the upper rotating disk 24 , and a plurality of baffles 28 are distributed around the outer wall of the rotating drum 27 .

[0037] The drum 27 and the baffle 28 rotate with the upper turntable 24. When the repair material falls from the connecting pipe 31 into the outer shell 21, the repair material will be successively contained between the baffles 28, and will be accurately and evenly dropped into the soil between the shovel blades 23 as the baffles 28 rotate, ensuring that the repair material can be evenly mixed with the soil.

[0038] In this embodiment, the side wall of the rotating drum 27 is provided with air holes 271, the first rotating shaft 4 is a hollow shaft, and the first rotating shaft 4 is provided with side holes 41 at each position in the rotating drum 27, one end of the first rotating shaft 4 is connected to an air duct 42 through a bearing, and the air duct 42 is connected to the blower 8 in the bracket 1.

[0039] That is, the blower 8 can blow air toward each rotating drum 27 , so that the air holes 271 can discharge air to break up the repair material so as to evenly mix it into the soil.

[0040] In this embodiment, a stop ring 272 concentric with the upper turntable 24 is fixed to the side wall of the housing 21 . The stop ring 272 fits the inner wall of the rotating drum 27 . A notch 273 is formed in the stop ring 272 in the direction toward the lower turntable 22 .

[0041] That is to say, the baffle ring 272 can block the air holes 271 on the side wall of the drum 27 so that the air in the drum 27 can only be discharged from the air holes 271 facing the lower turntable 22, ensuring that the scattered repair material can be accurately aligned with the soil between the shovel blades 23.

[0042] During the specific implementation: start the driving device 6, set the initial speed through the controller, the recommended speed is 30rpm-60rpm, start the blower 8 synchronously, adjust the air volume to the middle gear, and the air pressure range is 0.2MPa-0.5MPa; the traction vehicle moves in a straight line at a constant speed, preferably 0.5km / h-1.2km / h. At this time, the lower turntable 22 is driven by the second rotating shaft 5 to rotate counterclockwise, and the arc-shaped shovel blade 23 cuts into the soil and lifts the soil blocks through the inlet 211 to the inside of the shell 21; the upper turntable 24 is driven by the first rotating shaft 4 to rotate clockwise, driving the stirring shaft 26 to crush the soil blocks. At the same time, the rotating block 25 rotates due to the meshing of the gear 251 and the ring gear 252, and the multiple stirring shafts 26 form a three-dimensional stirring trajectory, which completely separates the soil adhering to the shovel blades 23; the rotating drum 27 rotates synchronously with the upper turntable 24, and the baffle 28 evenly distributes the repair material to the gaps between the shovel blades; the airflow of the blower 8 enters the rotating drum 27 through the hollow side hole 41 of the first rotating shaft 4, and blows the repair material through the directional wind hole 271 of the notch 273 to achieve gas-solid mixing; the stirred soil-repair material mixture is backfilled into the working trench through the outlet 212, and the outer shell 21 guides the material to fall continuously to avoid accumulation.

[0043] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A degraded forest soil restoration device based on composite organic materials, characterized in that: include: A bracket (1), wherein the bracket (1) is provided with a vehicle connection mechanism; A plurality of repair components (2) are arranged in a straight line and distributed at the bottom of the bracket (1); The repair component (2) comprises: a housing (21), a top portion of which is provided with an inlet (211), and a bottom portion of which is provided with an outlet (212); The lower turntable (22) and the upper turntable (24) are respectively arranged on two sides of the interior of the housing (21) via bearings; The lower rotating disk (22) is provided with a plurality of arc-shaped shovel blades (23) evenly distributed along the circumference, and the upper rotating disk (24) is provided with a plurality of radially extending stirring shafts (26) along the circumference; The material bin (3) is arranged on the upper part of the bracket (1) and is connected to the interior of each shell (21) through a plurality of connecting pipes (31).

2. The degraded forest soil remediation device based on composite organic materials according to claim 1 is characterized in that: A first rotating shaft (4) and a second rotating shaft (5) are arranged in parallel in the bracket (1); the first rotating shaft (4) is fixedly connected to each upper rotating disk (24), and the second rotating shaft (5) is fixedly connected to each lower rotating disk (22); a transmission gear set (7) connects the first rotating shaft (4) and the second rotating shaft (5) to form a reverse transmission structure; and a driving device (6) is arranged on the bracket (1) and is transmission-connected to the first rotating shaft (4).

3. The degraded forest soil restoration device based on composite organic materials according to claim 1 is characterized in that: Each of the connecting pipes (31) is provided with a metering feeding mechanism.

4. The degraded forest soil restoration device based on composite organic materials according to claim 1 is characterized in that: A plurality of rotating blocks (25) are distributed circumferentially in the upper rotating disk (24), and a plurality of stirring shafts (26) are distributed in each of the rotating blocks (25).

5. The degraded forest soil restoration device based on composite organic materials according to claim 4 is characterized in that: A gear (251) is fixed to a side of each rotating block (25) away from the lower rotating disk (22), a gear ring (252) concentric with the upper rotating disk (24) is fixed to the side wall of the housing (21), and the gear ring (252) meshes with each gear (251) in the corresponding upper rotating disk (24).

6. The degraded forest soil restoration device based on composite organic materials according to claim 2 is characterized in that: A rotating drum (27) is fixed at the center of the upper rotating disk (24), and a plurality of baffles (28) are distributed around the outer wall of the rotating drum (27).

7. The degraded forest soil restoration device based on composite organic materials according to claim 6 is characterized in that: The side wall of the rotating drum (27) is provided with air holes (271); the first rotating shaft (4) is a hollow shaft; and the first rotating shaft (4) is provided with side holes (41) at positions inside each rotating drum (27); one end of the first rotating shaft (4) is connected to an air duct (42) via a bearing; and the air duct (42) is connected to a blower (8) in the bracket (1).

8. The degraded forest soil restoration device based on composite organic materials according to claim 7 is characterized in that: A stop ring (272) concentric with the upper rotating disk (24) is fixed to the side wall of the outer shell (21); the stop ring (272) is in contact with the inner wall of the rotating drum (27); and a notch (273) is formed in the direction toward the lower rotating disk (22).

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