Desert soil improvement and remediation method

Abstract

The invention relates to the technical field of soil remediation, in particular to a desert soil improvement and remediation method which comprises a walking base, five treatment mechanisms used for desert soil treatment are arranged on the walking base, one treatment mechanism is arranged in the center of the walking base, and the other treatment mechanism is arranged in the center of the walking base. The other four treatment mechanisms are distributed in a circumferential array mode with the treatment mechanism in the center of the walking base as the center, the five treatment mechanisms are jointly and fixedly connected with a connecting frame, and a pushing mechanism used for driving the treatment mechanisms to move up and down is arranged on the upper surface of the connecting frame. Through the arrangement of the processing mechanism, desert restoration can be conducted in a drilling mode when soil improvement and restoration are conducted on sandy soil in the desert, organic restoration materials are mixed in the sandy soil in the process of drilling out the sandy soil and filling the sandy soil back to a drilling pit, the soil improvement and restoration work can be continuously conducted, and the restoration efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soil restoration, and in particular to a method for improving and restoring desert soil. Background Art

[0002] Land desertification has reduced land resources and reduced the utilization rate of forestland, grassland and cultivated land. Desert soil is barren and has serious water and fertilizer leakage, making afforestation difficult. How to ensure the survival rate of desert afforestation and promote tree growth is a key issue. In response to this, soil conditioners are widely used in desert management. For example, using river and lake sediments as conditioners can supplement desert soil nutrients. Using sediments and water retainers to prepare ecological restoration base materials can improve the soil environment. Some people have also proposed using river and lake sediments as conditioners to supplement ecological mats to improve desert soil and to manage deserts through plant restoration; this plan can increase soil water retention capacity and water use efficiency, reduce water evaporation and soil erosion, and is conducive to water resource management and drought relief. Vegetation growth can alleviate climate change and provide carbon sink functions. It can also improve soil fertility and nutrient circulation, and provide conditions for crop growth and farmland reclamation.

[0003] When adopting the desert soil treatment method for desert treatment, usually a part of sand is selected and mixed with organic repair materials, and then the sand is spread on the desert again, and then the sand is gradually soilified over a certain period of time. However, in this way, during the mixing and spreading process, due to the high temperature in the desert, some water will be evaporated and lost, affecting the survival rate of subsequent vegetation planting. In addition, this method cannot make the repair work continuous. It is necessary to first carry out uniform stirring and mixing, and then spread. After the mixed sand and organic repair materials are spread, they are mixed and spread again, so that the continuity of the repair work is not high. Summary of the invention

[0004] Therefore, the present invention provides a method for improving and repairing desert soil, which solves the above technical problems.

[0005] The present invention provides a method for improving and restoring desert soil, comprising the following steps:

[0006] S1. Collection of river and lake sediment: Collect sediment from the bottom of rivers and lakes through collection equipment.

[0007] S2. Preparation of mixture: uniformly mixing humic acid powder and crushed rape straw to obtain a mixture.

[0008] S3. Preparation of organic restoration materials: Mix the mixture obtained in step S2 with the river and lake sediment collected in step S1, then add a water retaining agent, controlled release urea and dipotassium hydrogen phosphate, and mix well to obtain desert organic restoration materials.

[0009] S4, soil treatment: The organic remediation material obtained in step S3 is mixed with the sand in the desert in proportion through a processing device to transform the sand into soil.

[0010] S5. Plant planting: Plants suitable for desert conditions are planted in soil-treated locations to assist soil-treated restoration methods for desert restoration.

[0011] The processing equipment involved in the above-mentioned step S4 includes a walking base, on which five processing mechanisms for soil treatment of the desert are arranged, one of which is arranged at the center of the walking base, and the remaining four processing mechanisms are distributed in a circular array with the processing mechanism in the center of the walking base as the center, and a connecting frame is fixedly connected to the five processing mechanisms, and a pushing mechanism for driving the processing mechanism to move up and down is arranged on the upper surface of the connecting frame, and a paving mechanism for paving the ground is arranged on the front side of the walking base.

[0012] The processing mechanism includes a mixing barrel fixedly connected to a connecting frame, an auger rod rotatably arranged inside the mixing barrel, a gear plate fixedly connected to the top end of the auger rod, the auger rod and the mixing barrel are coaxial, a connecting piece for assisting the auger rod in taking sand is arranged on the upper surface of the mixing barrel, a conveying piece for conveying organic repair materials into the mixing barrel is arranged on the inner circumferential surface of the mixing barrel, and a mixing piece for stirring and mixing the organic repair materials and sand is arranged inside the mixing barrel.

[0013] According to an embodiment of the present invention, the pushing mechanism includes two rectangular connection frames distributed up and down and fixedly connected to a walking base, the four corners of the two rectangular connection frames are commonly fixedly connected with hydraulic telescopic cylinders, the telescopic ends of the four hydraulic telescopic cylinders are commonly fixedly connected with a fixed frame, the upper surface of the fixed frame is provided with an organic repair material conveying unit, the organic repair material conveying unit is fixedly and penetrated with a plurality of connecting pipes, and a driving motor is provided at the center position of the upper surface of the fixed frame.

[0014] According to an embodiment of the present invention, the paving mechanism includes two left-right symmetrical articulated seats fixedly connected to the front surface of the walking base, the front end of the articulated seat is hinged with a hinge block, an elastic telescopic connecting rod is fixedly connected to the hinge block, the telescopic end of the elastic telescopic connecting rod passes through the bottom of the articulated block and is hinged with a connecting seat, and a scraper is commonly fixedly connected to one side of the two connecting seats away from the articulated block, and the scraper is hinged to the walking base.

[0015] According to an embodiment of the present invention, the connecting member includes a mounting frame fixedly connected to the upper surface of the mixing barrel, the upper surface of the mounting frame is penetrated by two connecting vertical rods symmetrically with the axis of the mixing barrel as a reference and elastically slidably connected, the bottom ends of the two connecting vertical rods are commonly fixedly connected to an extrusion plate, the inner side of the extrusion plate is rotatably connected to a rotating disk, the rotating disk is coaxial with the auger rod and fixedly connected, the upper surface of the rotating disk is rotatably connected to a plurality of connecting blocks distributed in a circular array, and a spiral blade is provided on the circumferential surface of the auger rod and below the extrusion plate.

[0016] According to an embodiment of the present invention, the mixing element includes a connecting plate fixedly connected to the circumferential surface of the spiral drill rod and located below the mounting frame, the upper surface of the connecting plate penetrates and is rotatably connected with a plurality of rotating blocks distributed in a circular array, the plurality of rotating blocks correspond one by one to the plurality of connecting blocks up and down, and a stirring paddle is commonly arranged between the opposite surfaces, the top end of the stirring paddle is fixedly connected to the rotating block, the bottom end of the stirring paddle penetrates up and down and is slidably connected to the connecting block, and the upper surface of the rotating block is fixedly connected with a transmission gear.

[0017] According to an embodiment of the present invention, a plurality of limit poles distributed in a circular array are fixedly connected to the lower surface of the mounting frame, and a matching gear is commonly fixedly connected to the bottom ends of the plurality of limit poles. The matching gear is meshed with a plurality of transmission gears, and the matching gear has no contact with the auger rod and the connecting plate.

[0018] According to an embodiment of the present invention, the conveying member includes a plurality of conveying plates embedded in the inner circumferential surface of the mixing cylinder and distributed in a circular array, the top ends of the plurality of conveying plates are fixed together and penetrated by a connecting ring, a limiting sleeve is fixedly connected to the top end of the inner circumferential surface of the mixing cylinder and at the position corresponding to the conveying plate, a baffle is slidably connected to the inside of the limiting sleeve, the bottom end of the baffle is fixedly connected to the upper surface of the extrusion plate, a plurality of through holes are evenly opened in the vertical direction on one side of the conveying plate close to the axis of the mixing cylinder, and the baffle is tightly attached to the surface of the conveying plate with the through holes.

[0019] According to an embodiment of the present invention, the gear plate on the auger rod at the center position of the walking base is respectively meshed with the gear plates on the auger rods around it, the output shaft of the driving motor on the connecting frame is fixedly connected to the center position of the auger rod at the center position, and the top ends of the gear plates around are rotatably connected to the fixed frame through connecting shafts.

[0020] The technical solution of the present invention is as follows: 1. Through the setting of the processing mechanism, the sand in the desert can be improved and repaired by soil, and the desert can be repaired by drilling. In the process of drilling out the sand and filling the sand back into the drill hole, organic repair materials are mixed in the sand, so that the soil improvement and repair work can be carried out continuously and the efficiency of the repair can be improved.

[0021] 2. Improve the desert soil by drilling holes, transport the improved soil into the holes, and reduce the heated area of ​​the improved soil. This will allow the improved location to retain moisture for a longer period of time, and the drilling location will also facilitate subsequent plant planting, thereby improving the overall desert restoration efficiency.

[0022] 3. Through the setting of the paving mechanism, after drilling and repairing the desert, the repair position can be scraped flat, and the excess part can be leveled. At the same time, the excess sand mixed with organic repair materials can be spread in the position without drilling holes, so that the organic repair materials can be fully utilized, and the excess materials can be used to form a protection circle around the drilling position to improve the success rate of repair.

[0023] 4. Through the setting of the mixing piece, the organic repair material can be fully mixed with the sand and soil brought up by the spiral drill rod inside the mixing barrel during the process of the spiral drill rod rotating, so that the sand and organic repair material mixture that is subsequently filled back into the borehole can be more evenly filled in the borehole, resulting in a better repair effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 The present invention is a flowchart of the method for improving and restoring desert soil.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the processing equipment involved in the desert soil improvement and restoration method provided by the present invention.

[0027] Figure 3 It is one of the three-dimensional structural schematic diagrams of the pushing mechanism provided by the present invention.

[0028] Figure 4 It is a three-dimensional structural schematic diagram of the processing mechanism provided by the present invention.

[0029] Figure 5 This is the second three-dimensional structural schematic diagram of the pushing mechanism provided by the present invention.

[0030] Figure 6 It is a three-dimensional structural schematic diagram of the mixing piece and the connecting piece provided by the present invention.

[0031] Figure 7It is a schematic diagram of the three-dimensional structure of the connection between the connecting frame and the mixing cylinder provided by the present invention.

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the conveying member provided by the present invention.

[0033] Fig. 9 The present invention provides Figure 8 Enlarged view of part A.

[0034] Fig.10 It is a three-dimensional structural schematic diagram of the tiling mechanism provided by the present invention.

[0035] Reference numerals:

[0036] 1. Walking base; 2. Pushing mechanism; 3. Connecting frame; 4. Processing mechanism; 5. Tiling mechanism; 21. Rectangular connecting frame; 22. Hydraulic telescopic cylinder; 23. Fixed frame; 24. Organic repair material conveying unit; 25. Connecting pipe; 41. Mixing barrel; 42. Mixing piece; 43. Conveying piece; 44. Connecting piece; 45. Auger rod; 46. Gear plate; 51. Elastic telescopic connecting rod; 52. Articulated block; 53. Articulated seat; 54. Connecting seat; 55. Scraper; 421. Connecting plate; 422. Transmission gear; 423. Matching gear; 424. Limiting pole; 425. Rotating block; 426. Stirring blade; 431. Connecting ring; 432. Conveying plate; 433. Baffle; 434. Limiting sleeve; 441. Mounting frame; 442. Connecting pole; 443. Extrusion plate; 444. Rotating plate; 445. Connecting block. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] like Figure 1 and Figure 2 As shown, a method for improving and restoring desert soil comprises the following steps:

[0039] S1. Collection of river and lake sediment: Collect sediment from the bottom of rivers and lakes through collection equipment.

[0040] S2. Preparation of mixture: uniformly mixing humic acid powder and crushed rape straw to obtain a mixture.

[0041] S3. Preparation of organic restoration materials: Mix the mixture obtained in step S2 with the river and lake sediment collected in step S1, then add a water retaining agent, controlled release urea and dipotassium hydrogen phosphate, and mix well to obtain desert organic restoration materials.

[0042] S4, soil treatment: The organic remediation material obtained in step S3 is mixed with the sand in the desert in proportion through a processing device to transform the sand into soil.

[0043] S5. Plant planting: Plants suitable for desert conditions are planted in soil-treated locations to assist soil-treated restoration methods for desert restoration.

[0044] The processing equipment involved in the above-mentioned step S4 includes a walking base 1, on which are arranged five processing mechanisms 4 for soil treatment of the desert, one of which is arranged at the center of the walking base 1, and the remaining four processing mechanisms 4 are distributed in a circular array with the processing mechanism 4 at the center of the walking base 1 as the center, and a connecting frame 3 is fixedly connected to the five processing mechanisms 4, and a pushing mechanism 2 for driving the processing mechanisms 4 to move up and down is arranged on the upper surface of the connecting frame 3, and a paving mechanism 5 for paving the ground is arranged on the front side of the walking base 1.

[0045] like Figure 3 As shown, the pushing mechanism 2 includes two rectangular connection frames 21 distributed up and down and fixedly connected to the walking base 1, and the four corners of the two rectangular connection frames 21 are commonly fixedly connected with hydraulic telescopic cylinders 22, and the telescopic ends of the four hydraulic telescopic cylinders 22 are commonly fixedly connected with a fixed frame 23, and the upper surface of the fixed frame 23 is provided with an organic repair material conveying unit 24, and a plurality of connecting pipes 25 are fixedly connected and penetrated by the organic repair material conveying unit 24, and a driving motor is provided at the center position of the upper surface of the fixed frame 23.

[0046] like Figure 4 and Figure 5 As shown, the processing mechanism 4 includes a mixing barrel 41 fixedly connected to the connecting frame 3, an auger rod 45 is rotatably arranged inside the mixing barrel 41, a gear plate 46 is fixedly connected to the top of the auger rod 45, the auger rod 45 is coaxial with the mixing barrel 41, a connecting piece 44 is arranged on the upper surface of the mixing barrel 41 to assist the auger rod 45 in taking sand, a conveying piece 43 for conveying organic repair materials into the mixing barrel 41 is arranged on the inner circumferential surface of the mixing barrel 41, a mixing piece 42 for stirring and mixing the organic repair materials and sand is arranged inside the mixing barrel 41, the gear plate 46 on the auger rod 45 at the center position of the walking base 1 is respectively meshed with the gear plates 46 on the auger rods 45 around it, the output shaft of the driving motor on the connecting frame 3 is fixedly connected to the center position of the auger rod 45 at the center position, and the top ends of the gear plates 46 around it are rotatably connected to the fixing frame 23 through connecting shafts.

[0047] During specific use, the walking base 1 is first moved to the specified position, and then the sludge-like organic repair material is loaded inside the organic repair material conveying unit 24. The fixed frame 23 is pushed downward by extending the hydraulic telescopic cylinder 22. The fixed frame 23 pushes multiple mixing barrels 41 to move downward synchronously through the connecting frame 3. The driving motor on the fixed frame 23 drives the spiral drill rod 45 to rotate inside the mixing barrel 41 through the gear plate 46 to perform drilling work in the desert.

[0048] At the same time, the organic repair material conveying unit 24 conveys the sludge-like organic repair material to the interior of the conveying member 43 through the connecting pipe 25, and disperses the organic repair material into the interior of the mixing barrel 41 through the conveying member 43, and mixes the sand and organic material inside the mixing barrel 41 through the mixing member 42. When the drilling is completed, the drive motor is stopped, and then the drive motor is reversed and the hydraulic telescopic cylinder 22 is contracted to lift the mixing barrel 41 upward while refilling the mixed sand and organic repair material inside the mixing barrel 41 into the drilled hole.

[0049] like Figure 6 As shown, the connecting member 44 includes a mounting frame 441 fixedly connected to the upper surface of the mixing barrel 41, and two connecting vertical rods 442 symmetrically based on the axis of the mixing barrel 41 are penetrated and elastically slidably connected to the upper surface of the mounting frame 441, and the bottom ends of the two connecting vertical rods 442 are commonly fixedly connected to an extrusion plate 443, and a rotating disk 444 is rotatably connected to the inner side of the extrusion plate 443, and the rotating disk 444 is coaxial with the auger rod 45 and fixedly connected, and a plurality of connecting blocks 445 are rotatably connected to the upper surface of the rotating disk 444 in a circular array, and spiral blades are arranged on the circumferential surface of the auger rod 45 and below the extrusion plate 443.

[0050] During specific use, after the walking base 1 moves to the specified position, the hydraulic telescopic cylinder 22 pushes the mixing drum 41 to move downward, and the driving motor drives the auger rod 45 to rotate inside the mixing drum 41 through the gear plate 46 to start drilling. The sand and soil drilled out during the drilling process of the auger rod 45 gradually move upward along the spiral blades at the bottom of the auger rod 45. After the auger rod 45 transports the sand and soil upward and collides with the extrusion plate 443, the auger rod 45 continues to rotate to transport the sand and soil to the inside of the mixing drum 41 in cooperation with the extrusion force generated by the extrusion plate 443 on the sand and soil. At the same time, as the amount of sand and soil entering the mixing drum 41 increases, the sand and soil pushes the extrusion plate 443 to slide upward inside the mixing drum 41, and cooperates with the connecting vertical rod 442 to slide on the mounting frame 441, which can ensure that the extrusion plate 443 can keep sliding in the vertical upward direction.

[0051] like Figure 7 , Figure 8 and Fig. 9As shown, the conveying member 43 includes a plurality of conveying plates 432 embedded in the inner circumferential surface of the mixing barrel 41 and distributed in a circumferential array. The top ends of the plurality of conveying plates 432 are fixed together and penetrated by a connecting ring 431. A limiting sleeve 434 is fixedly connected to the top end of the inner circumferential surface of the mixing barrel 41 and at the position corresponding to the conveying plate 432. A baffle 433 is slidably connected to the inside of the limiting sleeve 434. The bottom end of the baffle 433 is fixedly connected to the upper surface of the extrusion plate 443. A plurality of through holes are evenly opened in the vertical direction on one side of the conveying plate 432 close to the axis of the mixing barrel 41. The baffle 433 is tightly attached to the surface of the conveying plate 432 with the through holes. The connecting ring 431 is connected to the organic repair material conveying unit 24 through the connecting pipe 25.

[0052] During specific use, when the auger rod 45 starts to drill a hole in the desert, the organic repair material conveying unit 24 conveys the organic repair material to the inside of the connecting ring 431 through the connecting pipe 25. The connecting ring 431 then disperses the organic repair material to the inside of multiple conveying plates 432, and conveys it to the inside of the mixing barrel 41 through the through holes on the conveying plates 432. At the same time, part of the through holes on the conveying plates 432 are blocked by the baffle 433, so that the organic repair material is conveyed from the through holes below the extrusion plate 443 to the inside of the mixing barrel 41. As the extrusion plate 443 continues to move upward, the baffle 433 is pushed to slide upward inside the limiting sleeve 434, so that more through holes on the conveying plate 432 are leaked to convey the organic repair material. As the amount of sand entering the mixing barrel 41 varies, through holes of different heights are opened to convey the organic repair material, so that the organic repair material can be mixed with the sand more fully.

[0053] like Figure 6 As shown, the mixing element 42 includes a connecting plate 421 fixedly connected to the circumferential surface of the auger rod 45 and located below the mounting frame 441, the upper surface of the connecting plate 421 is penetrated and rotatably connected with a plurality of rotating blocks 425 distributed in a circular array, the plurality of rotating blocks 425 correspond one to another up and down with the plurality of connecting blocks 445, and a stirring paddle 426 is commonly arranged between the opposite surfaces, the top of the stirring paddle 426 is fixedly connected to the rotating block 425, the bottom end of the stirring paddle 426 is penetrated up and down and is slidably connected with the connecting block 445, the upper surface of the rotating block 425 is fixedly connected with a transmission gear 422, the lower surface of the mounting frame 441 is fixedly connected with a plurality of limiting vertical rods 424 distributed in a circular array, the bottom ends of the plurality of limiting vertical rods 424 are commonly fixedly connected with a matching gear 423, the matching gear 423 is meshed with the plurality of transmission gears 422, and the matching gear 423 is not in contact with the auger rod 45 and the connecting plate 421.

[0054] During specific use, when the auger rod 45 drills a hole in the desert to transport sand and soil into the mixing barrel 41, the auger rod 45 drives the connecting disk 421 to rotate synchronously, and the connecting disk 421 drives multiple stirring blades 426 to rotate synchronously with the auger rod 45. At this time, the stirring blades 426 drive the rotating disk 444 to rotate synchronously on the extrusion plate 443, and the sand and organic repair materials are mixed inside the mixing barrel 41 through the part of the stirring blades 426 extending to the lower surface of the rotating disk 444. As the amount of sand entering the mixing barrel 41 increases, the extrusion plate 443 gradually slides upward, synchronously driving the rotating disk 444 to slide upward. At this time, the contact section of the stirring blades 426 with the sand and organic repair materials is longer, so as to fully stir the sand and organic repair materials.

[0055] When the connecting disk 421 rotates with the auger rod 45, the transmission gear 422 is driven to rotate synchronously. At this time, the transmission gear 422 is coordinated with the gear 423 so that it rotates synchronously with the rotation of the connecting disk 421, and drives the rotating block 425 to rotate on the connecting disk 421, so that the stirring paddle 426 rotates synchronously. The connecting block 445 can make the stirring paddle 426 rotate smoothly. The stirring paddle 426 rotates synchronously with the rotation of the connecting disk 421, which can further improve the uniformity of the mixing of sand and organic repair materials.

[0056] like Fig.10 As shown, the paving mechanism 5 includes two left-right symmetrical articulated seats 53 fixedly connected to the front surface of the walking base 1, the front end of the articulated seat 53 is hinged with a hinge block 52, the hinge block 52 is fixedly connected with an elastic telescopic connecting rod 51, the telescopic end of the elastic telescopic connecting rod 51 passes through the bottom of the articulated block 52, and is hinged with a connecting seat 54, and the two connecting seats 54 are commonly fixedly connected with a scraper 55 on one side away from the articulated block 52, and the scraper 55 is hinged to the walking base 1.

[0057] During specific use, after the auger rod 45 has drilled a certain depth, the driving motor is stopped, and the sand and organic repair materials in the mixing drum 41 are refilled into the borehole by reversing the driving motor, and the mixing drum 41 is driven to gradually move upward in cooperation with the hydraulic telescopic cylinder 22. During the backfilling process, the sand and organic repair materials continue to be stirred and mixed. When all the backfilling is completed, the walking base 1 is moved to the next repair position. During the movement, the elastic force of the elastic telescopic connecting rod 51 itself is cooperated to generate a thrust on the scraper 55 so that the scraper 55 is always close to the ground. When the walking base 1 moves backward, the scraper 55 cooperates with the connecting seat 54 and the hinge block 52 to drive the elastic telescopic connecting rod 51 to deflect. As the walking base 1 continues to move, the excess sand and organic repair materials at the repair position are scraped flat by the scraper 55 and spread around the drilling position. The above operation is repeated to carry out desert repair work at the next position.

[0058] Working principle: When in use, first move the walking base 1 to the specified position, then load the sludge-like organic repair material inside the organic repair material conveying unit 24, extend the hydraulic telescopic cylinder 22 to push the mixing barrel 41 downward, and at the same time drive the motor to drive the auger rod 45 to rotate inside the mixing barrel 41 through the gear plate 46, and start drilling in the desert. During the drilling process, the organic repair material conveying unit 24 conveys the organic repair material inside it to the inside of the connecting ring 431 through the connecting pipe 25, and disperses it to the inside of multiple conveying plates 432 through the connecting ring 431, and squeezes it into the inside of the mixing barrel 41 through the through holes on the conveying plate 432, and mixes it with the sand and soil brought up by the auger rod 45. At the same time, the auger rod 45 drives the connecting plate 421 to rotate synchronously during the rotation, and the connecting plate 421 drives the stirring blade 426 to stir the sand and organic repair material inside the mixing barrel 41, so that the two are mixed more fully. At the same time, the connecting disk 421 drives the transmission gear 422 to rotate in close contact with the matching gear 423 during the rotation process, thereby driving the stirring blade 426 to rotate on the connecting disk 421, further improving the degree of mixing of sand and organic repair materials.

[0059] When the auger rod 45 drills a certain depth, the driving motor is stopped, and the sand and organic repair materials in the mixing drum 41 are refilled into the borehole by reversing the driving motor, and the mixing drum 41 is driven to gradually move upward in cooperation with the hydraulic telescopic cylinder 22. During the backfilling process, the sand and organic repair materials continue to be stirred and mixed. When all the backfilling is completed, the walking base 1 moves to the next repair position. During the movement, the scraper 55 scrapes the excess sand and organic repair materials at the repair position and spreads them around the drilling position. The above steps are repeated to carry out desert repair work at the next position.

[0060] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for improving and restoring desert soil, Features: The following steps are involved: S1. Collection of river and lake sediment: Collect river and lake sediment at the bottom of rivers and lakes through collection equipment; S2. Mixture preparation: uniformly mixing humic acid powder and crushed rape straw to obtain a mixture; S3, preparation of organic restoration materials: mixing the mixture obtained in step S2 with the river and lake sediment collected in step S1, and then adding a water retaining agent, controlled-release urea, and dipotassium hydrogen phosphate, and mixing well to obtain a thin mud-like desert organic restoration material; S4, soil treatment: the organic remediation material obtained in step S3 is mixed with the sand in the desert in proportion through a treatment device to transform the sand into soil; S5. Planting: Plants suitable for desert conditions are planted in the soilized location to assist the soil restoration method in desert restoration; The processing equipment involved in the above-mentioned step S4 comprises a walking base (1), on which five processing mechanisms (4) for soil treatment of desert are arranged, one of the processing mechanisms (4) is arranged at the center of the walking base (1), and the other four processing mechanisms (4) are distributed in a circular array with the processing mechanism (4) at the center of the walking base (1) as the center, and the five processing mechanisms (4) are commonly fixedly connected with a connecting frame (3), and the upper surface of the connecting frame (3) is provided with a pushing mechanism (2) for driving the processing mechanism (4) to move up and down, and the front side of the walking base (1) is provided with a paving mechanism (5) for paving the ground; The processing mechanism (4) comprises a mixing barrel (41) fixedly connected to the connecting frame (3); a spiral drill rod (45) is rotatably arranged inside the mixing barrel (41); a gear plate (46) is fixedly connected to the top end of the spiral drill rod (45); the spiral drill rod (45) is coaxial with the mixing barrel (41); a connecting piece (44) for assisting the spiral drill rod (45) in taking sand is arranged on the upper surface of the mixing barrel (41); a conveying piece (43) for conveying organic repair materials into the mixing barrel (41) is arranged on the inner circumferential surface of the mixing barrel (41); and a mixing piece (42) for stirring and mixing the organic repair materials and sand is arranged inside the mixing barrel (41).

2. A method for improving and restoring desert soil according to claim 1, Features: The pushing mechanism (2) comprises two rectangular connection frames (21) fixedly connected to the walking base (1) and distributed up and down, the four corners of the two rectangular connection frames (21) are commonly fixedly connected with hydraulic telescopic cylinders (22), the telescopic ends of the four hydraulic telescopic cylinders (22) are commonly fixedly connected with a fixed frame (23), the upper surface of the fixed frame (23) is provided with an organic repair material conveying unit (24), a plurality of connecting pipes (25) are fixedly connected and penetrated by the organic repair material conveying unit (24), and a driving motor is provided at the center position of the upper surface of the fixed frame (23).

3. A method for improving and restoring desert soil according to claim 1, Features: The paving mechanism (5) comprises two left-right symmetrical hinge seats (53) fixedly connected to the front surface of the walking base (1); the front end of the hinge seat (53) is hinged with a hinge block (52); the hinge block (52) is fixedly connected with an elastic telescopic connecting rod (51); the telescopic end of the elastic telescopic connecting rod (51) passes through the bottom of the hinge block (52) and is hinged with a connecting seat (54); a scraper (55) is fixedly connected to the two connecting seats (54) on one side away from the hinge block (52); and the scraper (55) is hinged with the walking base (1).

4. A method for improving and restoring desert soil according to claim 1, Features: The connecting member (44) comprises a mounting frame (441) fixedly connected to the upper surface of the mixing barrel (41); two connecting vertical rods (442) symmetrically connected with the axis of the mixing barrel (41) are passed through the upper surface of the mounting frame (441) and elastically slidably connected; the bottom ends of the two connecting vertical rods (442) are commonly fixedly connected to an extrusion plate (443); a rotating disk (444) is rotatably connected to the inner side of the extrusion plate (443); the rotating disk (444) is coaxial with and fixedly connected to the auger rod (45); a plurality of connecting blocks (445) are rotatably connected to the upper surface of the rotating disk (444) in a circumferential array; spiral blades are arranged on the circumferential surface of the auger rod (45) and below the extrusion plate (443).

5. A method for improving and restoring desert soil according to claim 4, Features: The mixing element (42) comprises a connecting plate (421) fixedly connected to the circumferential surface of the spiral drill rod (45) and located below the mounting frame (441); a plurality of rotating blocks (425) distributed in a circumferential array are penetrated and rotatably connected on the upper surface of the connecting plate (421); the plurality of rotating blocks (425) correspond to the plurality of connecting blocks (445) one by one in the upper and lower directions, and a stirring blade (426) is commonly arranged between the opposite surfaces; the top end of the stirring blade (426) is fixedly connected to the rotating block (425); the bottom end of the stirring blade (426) penetrates up and down and is slidably connected to the connecting block (445); and the upper surface of the rotating block (425) is fixedly connected to a transmission gear (422).

6. A method for improving and restoring desert soil according to claim 5, Features: The lower surface of the mounting frame (441) is fixedly connected to a plurality of position-limiting upright poles (424) distributed in a circumferential array, and the bottom ends of the plurality of position-limiting upright poles (424) are fixedly connected to a matching gear (423) in common, and the matching gear (423) is meshed with a plurality of transmission gears (422), and the matching gear (423) is not in contact with the auger rod (45) and the connecting plate (421).

7. A method for improving and restoring desert soil according to claim 4, Features: The conveying member (43) comprises a plurality of conveying plates (432) embedded in the inner circumferential surface of the mixing cylinder (41) and distributed in a circumferential array. The top ends of the plurality of conveying plates (432) are fixed together and penetrated by a connecting ring (431). A limiting sleeve (434) is fixedly connected to the top end of the inner circumferential surface of the mixing cylinder (41) and at a position corresponding to the conveying plate (432). A baffle (433) is slidably connected to the inside of the limiting sleeve (434) up and down. The bottom end of the baffle (433) is fixedly connected to the upper surface of the extrusion plate (443). A plurality of through holes are evenly opened in the vertical direction on one side of the conveying plate (432) close to the axis of the mixing cylinder (41). The baffle (433) is closely attached to the surface of the conveying plate (432) on which the through holes are opened.

8. A method for improving and restoring desert soil according to claim 1, Features: The gear disc (46) on the auger rod (45) at the center of the walking base (1) is respectively meshed with the gear discs (46) on the auger rods (45) at the periphery thereof; the output shaft of the driving motor on the connecting frame (3) is fixedly connected to the center of the auger rod (45) at the center; the top ends of the gear discs (46) at the periphery are rotatably connected to the fixing frame (23) via connecting shafts.

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