Agricultural soil improvement and remediation device

Abstract

The invention relates to the technical field of soil improvement and remediation, and discloses an agricultural soil improvement and remediation device which comprises a remediation vehicle, a height adjusting device is arranged in a cavity of the remediation vehicle, and the height adjusting device comprises a hydraulic cylinder, a height adjusting plate and a stroke side plate. According to the technical scheme, through the arranged remediation vehicle, the height adjusting device, the depth adjusting assembly and the discharging structure, the remediation vehicle can be driven by a field operation vehicle to conduct walking type soil improvement remediation on deep scarified soil, and the overall practicability of the remediation vehicle is high; the device is suitable for operation and remediation in different fields or soil, and the height adjusting device can meet the use requirements of different road conditions or field operation; according to the technical scheme, the biochar, the humus solution and the fertilizer particles are injected into agricultural soil at different depths, so that the soil can be rapidly improved and repaired in all directions, and the repairing efficiency of the soil of the agricultural planting land is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil improvement and remediation, and specifically relates to an agricultural soil improvement and remediation device. Background Art

[0002] With the intensive development of agriculture, the problem of soil degradation has become increasingly serious, especially the urgent need for the improvement of acidic soil. The soil remediation devices of traditional technologies generally have the following technical bottlenecks: First, traditional devices mostly use a single remediation agent to carry out remediation, lacking the implementation of remediation with the synergistic cooperation of multiple components, resulting in cumbersome soil remediation and increasing the amount of remediation work; Second, existing equipment (such as subsoilers or spraying devices) is difficult to achieve the synchronous operation of deep and shallow application of remediation agents. As recorded in the literature, biochar needs to be applied to a depth of 20 - 50 cm to neutralize acidity and sequester carbon, while calcium magnesium phosphate fertilizer should be applied to a shallow layer of 10 - 15 cm to avoid the alkalization superposition effect, but traditional machinery cannot meet this requirement.

[0003] Therefore, in view of the above problems, this patent proposes a layered remediation device that integrates the synergistic application of biochar, humic acid, and calcium magnesium phosphate fertilizer.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: An agricultural soil improvement and repair device includes a repair vehicle. A height adjustment device is arranged in the cavity of the repair vehicle. The height adjustment device includes a hydraulic cylinder, a height adjustment plate and a stroke side plate. The hydraulic cylinder is fixedly installed on the top wall surface in the cavity of the repair vehicle. The number of stroke side plates is two groups. The two groups of stroke side plates are respectively fixedly connected to the bottom end wall surfaces on both sides of the height adjustment plate. The stroke side plates are attached to the inner walls on both sides in the cavity of the repair vehicle. The hydraulic rod of the hydraulic cylinder is fixedly connected to the top of the height adjustment plate. Multiple depth adjustment components are arranged between the two groups of stroke side plates. A feeding structure that cooperates with each depth adjustment component is arranged below each group of depth adjustment components. The depth adjustment component includes a servo motor, a rotating rod and an eccentric guide wheel. The servo motor is fixedly installed on a side wall surface of the stroke side plate through a bracket. The output end of the servo motor is fixedly connected to the rotating rod through a coupling. The other end of the rotating rod is rotatably connected to the inner wall of the stroke side plate on the other side. The eccentric guide wheel is fixedly sleeved on the rotating rod. The feeding structure includes a first feeding cylinder, a second feeding cylinder, a second guide rod and a piston-type reciprocating feeding structure. Through holes corresponding to the position of the feeding structure are opened on the bottom wall surface of the repair vehicle. The number of second feeding cylinders is two. The two second feeding cylinders are distributed on both sides of the first feeding cylinder. The piston-type reciprocating pushing structure is located in the cavity of the first feeding cylinder. The second guide rod is arranged together with the piston-type reciprocating pushing structure. The top end of the second guide rod is movably arranged with the eccentric guide wheel. Multiple aggregate bins are arranged on the top of the height adjustment plate. Multiple first feeding pipes are arranged on the first feeding cylinder. Second feeding pipes are arranged on the second feeding cylinder. The aggregate bin is connected to the first feeding pipe and the second feeding pipe through a water pump or a pneumatic conveying pump.

[0006] As a preferred embodiment of the present invention, a helically wound guide groove is opened on the eccentric guide wheel. The head and tail ends of the guide groove are connected. The feeding structure further includes two first guide rods. The top ends of the first guide rod and the second guide rod are both in an arc-shaped convex state. The top ends of the first guide rod and the second guide rod are respectively located in the corresponding guide grooves. The diameter ratio of the eccentric guide wheel corresponding to the first guide rod up and down is smaller than that of the eccentric guide wheel corresponding to the second guide rod up and down. The two first guide rods are located on both sides of the first feeding cylinder. The bottom of both first guide rods is movably sleeved with a limit bottom sleeve. The bottom of the limit bottom sleeve is fixedly connected with a limit slide plate. The bottom of the limit slide plate is fixedly connected with a second slider. A second chute that engages with the second slider is opened on the bottom of the cavity in the repair vehicle. A spring is fixedly installed on the bottom of the cavity of the limit bottom sleeve. A guide sleeve is movably sleeved on the lower outer wall of the second guide rod. A first connecting rod is fixedly installed between the guide sleeve and the first guide rod on the corresponding side. A connecting plate is fixedly installed at the bottom end of the guide sleeve. A tension spring is fixedly installed at the bottom end of the connecting plate. The second guide rod penetrates through the tension spring.

[0007] As a preferred embodiment of the present invention, the first blanking cylinder includes a vertical cylinder, a guiding cylinder and a discharging cylinder. The guiding cylinder is in a horn shape and is fixedly connected to the top wall surface of the vertical cylinder. The discharging cylinder is in a flat shape and is fixedly connected to the bottom wall surface of the vertical cylinder. An arc-shaped discharging groove is formed at the bottom of the discharging cylinder. A perforation is formed at the center position of the top of the guiding cylinder, and the bottom end of the second guiding rod extends into the cavity of the guiding cylinder. The first feeding pipe is fixedly installed on the guiding cylinder. The second blanking cylinder includes a side cylinder and a side feeding cylinder, and the side cylinder and the side feeding cylinder are fixedly connected. A third connecting rod is fixedly connected between the first guiding rod and the corresponding side feeding cylinder. The side feeding cylinder is in a state where the inner diameter gradually decreases from top to bottom. A second connecting rod is fixedly installed between the side cylinder and the vertical cylinder. The side cylinder and the side feeding cylinder are in an overall inclined state. The top of the side feeding cylinder is horizontally aligned with the top of the guiding cylinder. The inclined bottom end of the side cylinder is close to the outer wall of the lower side of the vertical cylinder. The second feeding pipe is fixedly installed on the top of the side feeding cylinder.

[0008] As a preferred embodiment of the present invention, the piston-type reciprocating feeding structure includes a convex block. The convex block is a hemisphere. The bottom end of the second guiding rod is fixedly connected to the spherical top of the convex block. The bottom end of the tension spring is fixedly connected to the top wall surface of the convex block. A connecting block is fixedly provided at the bottom end of the convex block. A swinging groove is formed at the bottom of the connecting block. A pin rod is fixedly provided in the swinging groove. A driving connecting rod is rotatably sleeved on the pin rod. The bottom end of the driving connecting rod is fixedly connected with a connecting sleeve. A crank is rotatably installed in the connecting sleeve. Linking rods are fixedly connected to the outer walls of the two ends of the crank. The linking rods are rotatably connected to the wall surface of the corresponding side vertical cylinder.

[0009] As a preferred embodiment of the present invention, the linking rod is rotatably connected to the inner wall of the vertical cylinder through a socket bearing. The other end of the linking rod penetrates through the outer wall of the corresponding side cylinder. The end of the linking rod located in the cavity of the corresponding side cylinder is fixedly connected with an eccentric feeding wheel, and the eccentric feeding wheel is in an inclined state.

[0010] As a preferred embodiment of the present invention, a plurality of groups of blades are fixedly installed on the outer wall of the linking rod located in the cavity of the vertical cylinder. The blades are in an arc shape. The blades on each linking rod are symmetrically arranged up and down, and the blades on the two side linking rods are symmetrically arranged left and right.

[0011] As a preferred embodiment of the present invention, a downward feeding plate is fixedly connected to the bottom of the connecting sleeve. The feeding plate is in a fan shape. The side of the feeding plate away from the connecting sleeve is in a state where the thickness gradually increases. The end of the feeding plate away from the connecting sleeve is convexed downward in an arc shape. The feeding plate corresponds to the discharging groove in the up and down position.

[0012] As a preferred embodiment of the present invention, first sliders are fixedly installed on the outer walls of the two groups of stroke side plates, and first chutes are also formed on the inner walls of both sides in the repair vehicle cavity. The first sliders are slidably connected to the first chutes.

[0013] As a preferred embodiment of the present invention, a storage battery is also arranged on the top wall surface of the height adjustment plate. The storage battery is electrically connected to the water pump and the pneumatic conveying pump. A paddy field wheel is movably installed on the bottom outer wall of the repair vehicle, and a towing hook is also installed on the lower outer wall of the front end of the repair vehicle.

[0014] The present invention has the following beneficial effects compared with the prior art: 1. Through the provided repair vehicle, height adjustment device, depth adjustment component and feeding structure, the present technical solution realizes that a walking type of soil improvement and repair can be carried out on the subsoiled soil by driving the repair vehicle with a field operation vehicle. The repair vehicle of this solution has strong overall practicability and is suitable for operation and repair on different fields or soils. The height adjustment device can meet the use requirements under different road conditions or during field operations; through injecting biochar, humic solution and fertilizer particles into the agricultural soil at different depths, the present technical solution realizes a comprehensive and rapid improvement and repair of the soil, greatly improving the repair efficiency of the agricultural planting land soil.

[0015] 2. Through the provided depth adjustment component and feeding structure, when the eccentric guide wheel rotates, it will drive the first guide rod and the second guide rod to move synchronously in the left-right direction. Therefore, the first feeding cylinder and the second feeding cylinder can be driven to move synchronously, so that the first feeding cylinder and the second feeding cylinder extending into the soil can perform an S-shaped feeding route with left-right swinging. In this way, more soil repair agents and fertilizers can be transported into the soil, and the soil repair agents and fertilizers input into the soil can be better dispersed to a certain extent, increasing the contact area with the soil. Therefore, the improvement and repair efficiency of agricultural soil can be improved.

[0016] 3. Through the provided feeding structure, while the connecting sleeve drives the feeding plate to perform a reciprocating up-and-down movement, the feeding plate also swings along the discharge groove. The continuous reciprocating swing of the feeding plate can continuously press the biochar particles into the soil layer, and can also press and convey the suspension composed of biochar and humic solution. This can not only improve the feeding efficiency of the repair agent, but also improve the repair efficiency of the soil.

[0017] 4. In this technical solution, through the provided eccentric feeding wheels, when the linkage rod rotates, the linkage rod drives the respective eccentric feeding wheels to rotate. The eccentric feeding wheels rotate on the lower side inside the side cylinder. The eccentric feeding wheels and the linkage rod are in an eccentric connection state. Therefore, when the eccentric feeding wheels keep rotating, the eccentric feeding wheels can rotate and convey downward the fertilizer particles falling into the side cylinder. When the eccentric feeding wheels rotate and convey, they can rotate and press the fertilizer particles into the soil. Some fertilizer particles may directly fall onto the soil layer through the side cylinder. When the eccentric end of the eccentric feeding wheel rotates, it can press the fertilizer particles once, enabling them to further penetrate into the soil layer. Moreover, the rotational setting of the eccentric feeding wheels can prevent the problem of the side cylinder being blocked by soil when it moves in the soil layer. Because the eccentric feeding wheels keep rotating eccentrically, it can not only accelerate the fertilizer conveyance but also prevent soil from entering the side cylinder at the same time.

[0018] 5. In this technical solution, through the provided blades, the rotation of the linkage rod synchronously drives the blades to rotate. When the blades rotate, they can rotate and stir the humic solution and biochar particles entering the vertical cylinder cavity. The setting of the blades can perform an up-and-down rotational stirring, enabling the biochar particles to better mix with the humic solution. After mixing, through the up-and-down swinging and pressing of the feeding plate, they enter the soil layer. The setting of the blades can also play a certain role in crushing the biochar particles. The biochar particles may become biochar powder. The mixture of biochar powder and the humic solution can form a suspension, which is more conducive to soil remediation. Even if the biochar particles are not crushed into powder by the blades, the biochar particles and the humic solution can still play a role in soil remediation.

[0019] 6. In this technical solution, by conveying fertilizer particles (calcium magnesium phosphate fertilizer), biochar (particles or powder), and humic solution into agricultural soil, biochar can increase soil porosity, improve the air permeability and water permeability of deep soil. Functional groups such as carboxyl and phenolic hydroxyl groups on the surface of biochar can form organic-inorganic complexes with soil minerals, enhancing the stability of deep soil aggregates. The surface of biochar can also adsorb and precipitate some heavy metals at the same time. The humic solution can preferably be a humic acid solution. The humic acid solution can neutralize the alkalinity of biochar, forming a local pH buffer zone to avoid a sudden increase in the pH of the surface soil. The carboxyl and phenolic hydroxyl functional groups of the humic acid solution wrap Ca 2+ , PO4 3- in the calcium magnesium phosphate fertilizer to form a slow-release complex. Therefore, it can improve the utilization rates of nitrogen and phosphorus. Moreover, the humic acid solution and biochar particles and powder can form a colloidal suspension to a certain extent. The colloidal suspension can increase the water holding capacity of the soil, lock water. Humic acid also serves as a carbon source for microorganisms, stimulating the proliferation of actinomycetes and bacilli, increasing the activities of soil urease and phosphatase. The humic acid-biochar complex is loaded with phosphate-solubilizing bacteria to promote phosphorus mineralization.

[0020] 7. In this technical solution, fertilizer particles (calcium magnesium phosphate fertilizer), biochar (particles or powder), and humic solution are transported to different depths of the soil layer. Among them, the relative depth of the biochar and the humic solution transported into the soil layer is deeper than that of the fertilizer particles. Therefore, it can avoid the problem of pH imbalance caused by the direct contact between the biochar and the fertilizer particles (calcium magnesium phosphate fertilizer).

[0021] The following further describes the specific implementation manners of the present invention in detail with reference to the accompanying drawings. Description of the Drawings

[0022] In the drawings: Figure 1 is a perspective view of the repair vehicle of the present invention; Figure 2 is a side perspective view of the repair vehicle of the present invention; Figure 3 is a bottom view of the repair vehicle of the present invention; Figure 4 is a sectional view of the repair vehicle of the present invention; Figure 5 is the present invention Figure 4 an enlarged view of part A in; Figure 6 is the present invention Figure 4 an enlarged view of part B in; Figure 7 is the present invention Figure 6 an enlarged view of part C in; Figure 8 is a perspective view of the eccentric guide wheel of the present invention; Figure 9 is a perspective view of part of the blanking structure of the present invention; Figure 10 is a bottom view of part of the blanking structure of the present invention; Figure 11 is an exploded view of the first blanking cylinder and the second blanking cylinder of the present invention; Figure 12 is a bottom view of the first blanking cylinder and the second blanking cylinder of the present invention; Figure 13 is a perspective view of the piston-type reciprocating material pushing structure of the present invention; Figure 14 is a bottom view of the piston-type reciprocating material pushing structure of the present invention; Figure 15 is a side perspective view of the piston-type reciprocating material pushing structure of the present invention.

[0023] In the figure: 10, repair vehicle; 11, height adjustment plate; 12, hydraulic cylinder; 13, stroke side plate; 14, first slider; 15, first chute; 16, through hole; 17, servo motor; 18, rotating rod; 19, eccentric guide wheel; 20, guide groove; 21, first guide rod; 22, second guide rod; 23, first connecting rod; 24, guide sleeve; 25, connecting plate; 26, tension spring; 27, perforation; 28, vertical cylinder; 29, guide cylinder; 30, discharge cylinder; 31, discharge chute; 32, side cylinder; 33, second connecting rod; 34, connecting block; 35, swing groove; 36, driving connecting rod; 37, connecting sleeve; 38, crank; 39, feeding plate; 40, linkage rod; 41, eccentric feeding wheel; 42, blade; 43, convex block; 44, third connecting rod; 45, limiting bottom sleeve; 46, spring; 47, limiting slide plate; 48, second chute; 49, side feeding cylinder; 50, second slider; 51, pin rod. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0025] An agricultural soil improvement and repair device, as Figure 1 , Figure 2 , Figure 3 , Figure 4, as shown, it includes a repair vehicle 10. A height adjustment device is arranged in the cavity of the repair vehicle 10. The height adjustment device includes a hydraulic cylinder 12, a height adjustment plate 11 and a stroke side plate 13. The hydraulic cylinder 12 is fixedly installed on the top wall surface in the cavity of the repair vehicle 10. The number of the stroke side plates 13 is two groups. The two groups of stroke side plates 13 are respectively fixedly connected to the bottom end wall surfaces on both sides of the height adjustment plate 11. The stroke side plates 13 are in contact with the inner wall surfaces on both sides in the cavity of the repair vehicle 10. The hydraulic rod of the hydraulic cylinder 12 is fixedly connected to the top of the height adjustment plate 11; A plurality of depth adjustment components are arranged between the two groups of stroke side plates 13. A blanking structure cooperating with each depth adjustment component is arranged below each group of depth adjustment components. The depth adjustment component includes a servo motor 17, a rotating rod 18 and an eccentric guide wheel 19. The servo motor 17 is fixedly installed on a side wall surface of the stroke side plate 13 through a bracket. The output end of the servo motor 17 is fixedly connected to the rotating rod 18 through a coupling. The other end of the rotating rod 18 is rotatably connected to the inner wall of the stroke side plate 13 on the other side. The eccentric guide wheel 19 is fixedly sleeved on the rotating rod 18. The blanking structure includes a first blanking cylinder, a second blanking cylinder, a second guide rod 22 and a piston type reciprocating feeding structure. A through hole 16 corresponding to the position of the blanking structure is opened on the bottom wall surface of the repair vehicle 10. The number of the second blanking cylinders is two. The two second blanking cylinders are distributed on both sides of the first blanking cylinder. The piston type reciprocating pushing structure is located in the cavity of the first blanking cylinder. The second guide rod 22 is arranged together with the piston type reciprocating pushing structure. The top end of the second guide rod 22 is movably arranged with the eccentric guide wheel 19. A plurality of aggregate bins are arranged on the top of the height adjustment plate 11. A plurality of first feed pipes are arranged on the first blanking cylinder. Second feed pipes are arranged on the second blanking cylinders. The aggregate bins are connected to the first feed pipes and the second feed pipes through a water pump or a pneumatic conveying pump. As Figure 4 and Figure 5 , as shown, first sliders 14 are also fixedly installed on the outer walls of the two groups of the stroke side plates 13. First chutes 15 are also opened on the inner wall surfaces on both sides in the cavity of the repair vehicle 10. The first sliders 14 are slidably connected to the first chutes 15. As Figure 4 , a storage battery is also arranged on the top wall surface of the height adjustment plate 11. The storage battery is electrically connected to the water pump and the pneumatic conveying pump. A paddy field wheel is also movably installed on the bottom outer wall of the repair vehicle 10. A towing hook is also installed on the lower side outer wall at the front end of the repair vehicle 10.

[0026] During use, the entire repair vehicle 10 is traction-connected to a tractor or other field operation vehicle in the field through a traction hook. When the field operation vehicle drives the repair vehicle 10 to travel in the field, the repair vehicle 10 can travel on the field soil through four groups of paddy field wheels. Before improving and repairing the agricultural soil in this solution, it is necessary to deeply loosen the soil in the agricultural field. By deeply loosening the field soil, the soil can be turned over, the plow sole can be broken, the tillage layer thickness can be increased, and the soil structure becomes loose and ventilated, which also facilitates the subsequent improvement and repair of the device to it.

[0027] Before the field operation vehicle drives the repair vehicle 10 to travel in the field, the overall height of all depth adjustment components and the feeding structure is adjusted through the height adjustment device. Before the soil is improved and repaired, the feeding structure can be retracted into the repair vehicle 10 through the through hole 16. This is to avoid the contact or collision between the feeding structure and the ridge when the repair vehicle 10 passes through the ridge. Only when repairing the soil, by controlling the operation of the hydraulic cylinder 12, the hydraulic rod of the hydraulic cylinder 12 pushes the height adjustment plate 11 downward, and the height adjustment plate 11 drives the two stroke side plates 13 to move downward synchronously, can the feeding structure extend out of the through hole 16 and then extend into the repair layer of the soil. During the up and down movement of the two groups of stroke side plates 13 on the inner wall of the repair vehicle 10, the first slider 14 and the first chute 15 slide up and down in cooperation, which can ensure the stability of the stroke side plates 13 during the up and down process and also ensure the stability of the operation of the feeding structure.

[0028] It is worth noting that a ladder can be configured on one side wall surface of the repair vehicle 10, a manhole is opened on the top wall surface of the repair vehicle 10, and a cabinet door is assembled at the manhole through a hinge. A manhole can also be opened on one side back surface of the repair vehicle 10, and a side cabinet door can also be assembled at the manhole, which is convenient for later maintenance and inspection. A plug for charging the battery can be installed on the back surface of the repair vehicle 10, which can be cyclically charged with a household power supply. A control panel can also be assembled on the back surface of the repair vehicle 10, and the control panel controls the operation of electrical appliances such as the battery, water pump, and pneumatic conveying pump. The above-mentioned control panel, battery, water pump, pneumatic conveying pump, manhole, etc. are all prior arts and will not be elaborated here.

[0029] Such as Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9As shown, a spiral - shaped guiding groove 20 is formed on the eccentric guiding wheel 19, and the head and tail ends of the guiding groove 20 are connected. The blanking structure further includes two first guiding rods 21. The tops of the first guiding rods 21 and the second guiding rods 22 are in a state of arc - shaped protrusions. The tops of the first guiding rods 21 and the second guiding rods 22 are respectively located in the corresponding guiding grooves 20. The diameter of the eccentric guiding wheel 19 corresponding to the first guiding rod 21 up and down is smaller than that of the eccentric guiding wheel 19 corresponding to the second guiding rod 22 up and down. The two first guiding rods 21 are located on both sides of the first blanking cylinder. The bottoms of the two first guiding rods 21 are movably sleeved with limiting bottom sleeves 45. The bottoms of the limiting bottom sleeves 45 are fixedly connected with limiting sliding plates 47. The bottoms of the limiting sliding plates 47 are fixedly connected with second sliders 50. A second sliding groove 48 that is engaged with the second slider 50 is formed at the bottom of the cavity of the repair vehicle 10. A spring 46 is fixedly installed at the bottom of the cavity of the limiting bottom sleeve 45. A guiding sleeve 24 is movably sleeved on the lower outer wall of the second guiding rod 22. A first connecting rod 23 is fixedly installed between the guiding sleeve 24 and the corresponding first guiding rod 21 on one side. A connecting plate 25 is fixedly installed at the bottom end of the guiding sleeve 24. A tension spring 26 is fixedly installed at the bottom end of the connecting plate 25. The second guiding rod 22 penetrates through the tension spring 26.

[0030] Specifically, by controlling the operation of the servo - motor 17, when the servo - motor 17 operates, it drives the rotating rod 18 to rotate, and the rotating rod 18 drives the eccentric guiding wheel 19 to rotate. When the eccentric guiding wheel 19 rotates, the eccentric guiding wheel 19 intermittently presses the first guiding rod 21 and the second guiding rod 22 downward. When the first guiding rod 21 and the second guiding rod 22 are pressed downward, they drive the first blanking cylinder, the second blanking cylinder and the piston - type reciprocating feeding structure to also perform a synchronous downward pressing movement. In this way, the first blanking cylinder and the second blanking cylinder can continuously penetrate into the soil at different depths, and then through the pushing of the piston - type reciprocating feeding structure for blanking, the soil conditioner and fertilizer can be transported into the soil.

[0031] Furthermore, because the guiding groove 20 is spiral - shaped and its head and tail ends are connected, when the eccentric guiding wheel 19 rotates, it drives the first guiding rod 21 and the second guiding rod 22 to perform synchronous left - and - right upward movements. Therefore, it can drive the first blanking cylinder and the second blanking cylinder to also perform synchronous movements, enabling the first blanking cylinder and the second blanking cylinder extending into the soil to follow an S - shaped blanking route with left - and - right swinging. In this way, more soil conditioner and fertilizer can be transported into the soil, and the soil conditioner and fertilizer input into the soil can be better dispersed to a certain extent, increasing the contact area with the soil. Therefore, the improvement and repair efficiency of agricultural soil can be improved.

[0032] As Figure 6 、 Figure 7 、 Figure 9 、Figure 10 , Figure 11 , Figure 12 As shown, the first blanking cylinder includes a vertical cylinder 28, a guiding cylinder 29 and a discharging cylinder 30. The guiding cylinder 29 is in a horn shape and is fixedly connected to the top wall surface of the vertical cylinder 28. The discharging cylinder 30 is in a flat shape and is fixedly connected to the bottom wall surface of the vertical cylinder 28. A discharging groove 31 in an arc-shaped opening state is formed at the bottom of the discharging cylinder 30. A perforation 27 is formed at the center position of the top of the guiding cylinder 29, and the bottom end of the second guiding rod 22 extends into the cavity of the guiding cylinder 29. The first feed pipe is fixedly installed on the guiding cylinder 29. The second blanking cylinder includes a side cylinder 32 and a side feed cylinder 49. The side cylinder 32 and the side feed cylinder 49 are fixedly connected. A third connecting rod 44 is fixedly connected between the first guiding rod 21 and the corresponding side feed cylinder 49. The side feed cylinder 49 is in a state where the inner diameter gradually decreases from top to bottom. A second connecting rod 33 is fixedly installed between the side cylinder 32 and the vertical cylinder 28. The side cylinder 32 and the side feed cylinder 49 are in an overall inclined state. The side feed cylinder 49 is horizontally aligned with the top of the guiding cylinder 29. The inclined bottom end of the side cylinder 32 is close to the lower outer wall of the vertical cylinder 28. The second feed pipe is fixedly installed on the top of the side feed cylinder 49.

[0033] During use, multiple sets of aggregate bins can be arranged on the top of the height adjustment plate 11. Preferably, at least three sets of aggregate bins can be arranged. A corrugated pipe can be fixedly connected to the top end of the aggregate bin. The top end of the corrugated pipe can be fixedly connected to the feed main pipe. The feed main pipe penetrates through the top wall surface of the repair vehicle 10 and the feed main pipe can be equipped with a valve or an end cover. One of the aggregate bins can be filled with biochar, and the biochar can be used as a soil repair agent. One of the aggregate bins can be filled with fertilizer, and the choice of fertilizer can be based on the actual needs of agricultural soil. For example, calcium magnesium phosphate fertilizer or other fertilizers can be selected. One of the aggregate bins can also be filled with humic solution. The bottom of the aggregate bin is in a conical shape. The conical bottom of the aggregate bin is connected to a water pump or a pneumatic conveying pump through a pipe. The output ends of the water pump and the pneumatic conveying pump are then connected to the first feed pipe and the second feed pipe through pipes. By controlling the operation of the water pump and the pneumatic conveying pump regularly or quantitatively, the soil repair agent and fertilizer are transported into the first blanking cylinder and the second blanking cylinder, and finally the soil repair agent and fertilizer are sent into the soil through the first blanking cylinder and the second blanking cylinder, so as to achieve the improvement and repair of the soil.

[0034] Specifically, the fertilizer in the aggregate bin is transported into the second feed pipe by a pneumatic conveying pump, and then transported into the side feed cylinder 49 through the second feed pipe, flowing downward along the inner wall of the side feed cylinder 49, and finally entering the side cylinder 32 and then discharged into the soil. The biochar particles in the aggregate bin are transported into the first feed pipe by a pneumatic conveying pump, and then fall into the guiding cylinder 29 through the first feed pipe, and finally fall into the soil through the discharge chute 31; the humic solution in the aggregate bin can be transported into the first feed pipe by a water pump, and the humic solution can also be discharged into the soil through the discharge chute 31. It should be noted that the humic solution and the biochar particles can be used according to actual selection, or both can be used simultaneously.

[0035] As Figure 13 , Figure 6 , Figure 7 , Figure 14 , Figure 15 shown, the piston-type reciprocating feeding structure includes a convex block 43. The convex block 43 is a hemisphere. The bottom end of the second guiding rod 22 is fixedly connected to the spherical top of the convex block 43. The bottom end of the tension spring 26 is fixedly connected to the top wall surface of the convex block 43. A connecting block 34 is fixedly provided at the bottom end of the convex block 43. A swing groove 35 is formed at the bottom of the connecting block 34. A pin rod 51 is fixedly provided in the swing groove 35. A driving connecting rod 36 is rotatably sleeved on the pin rod 51. A connecting sleeve 37 is fixedly provided at the bottom end of the driving connecting rod 36. A crank 38 is rotatably installed in the connecting sleeve 37. Link rods 40 are fixedly connected to the outer walls of the two ends of the crank 38. The link rods 40 are rotatably connected to the wall surface of the corresponding vertical cylinder 28. As Figure 14 , Figure 15 shown, a downward feeding plate 39 is fixedly provided at the bottom of the connecting sleeve 37. The feeding plate 39 is fan-shaped. The side of the feeding plate 39 away from the connecting sleeve 37 is in a state where the thickness gradually increases. The end of the feeding plate 39 away from the connecting sleeve 37 is convex downward in an arc shape. The feeding plate 39 corresponds to the discharge chute 31 in the up and down position.

[0036] During use, when the eccentric guide wheel 19 rotates, the top ends of the arc-shaped protrusions of the first guide rod 21 and the second guide rod 22 are located in the guide groove 20. When the eccentric side of the eccentric guide wheel 19 presses down on the second guide rod 22 and the first guide rod 21, when the first guide rod 21 is pressed down, the bottom end of the first guide rod 21 further extends into the limit bottom sleeve 45, and the bottom end of the first guide rod 21 presses on the spring 46. At the same time, when the second guide rod 22 is pressed down, the second guide rod 22 further passes through the guide sleeve 24, and the guide sleeve 24 plays a guiding role for the second guide rod 22. The bottom end of the second guide rod 22 presses on the convex block 43. At this time, the tension spring 26 is stretched, and the convex block 43 presses down on the connecting block 34, and then presses down on the connecting sleeve 37 through the driving connecting rod 36. When the connecting sleeve 37 presses down, it drives the crank 38 to move downward. When the guide groove 20 on the eccentric guide wheel 19 gradually cancels the pressing on the second guide rod 22, under the elastic pull of the tension spring 26, the driving connecting rod 36 moves upward, and the crank 38 moves upward. In this way, the crank 38 can rotate. The connecting sleeve 37 continuously makes up-and-down reciprocating motions, and the connecting sleeve 37 also makes a certain amplitude of swinging motion. The swinging direction of the connecting sleeve 37 is along the discharge chute 31. The connecting sleeve 37 realizes driving the feeding plate 39 to make up-and-down reciprocating motions while also swinging along the discharge chute 31. The continuous up-and-down swinging of the feeding plate 39 can continuously press the biochar particles, pressing them into the soil layer. It should be noted that the continuous up-and-down swinging motion of the feeding plate 39 can also prevent the soil from entering the discharge cylinder 30 through the discharge chute 31. When the discharge cylinder 30 moves in the soil layer, some crushed soil may enter the port of the discharge chute 31. The continuous reciprocating up-and-down pressing of the feeding plate 39 can press the soil at the discharge chute 31 downward, so the conveying efficiency of the biochar particles can be improved, and the biochar particles are pressed into the soil layer through the feeding plate 39.

[0037] As Figure 13 , Figure 7 shown, the linkage rod 40 is rotatably connected to the inner wall of the vertical cylinder 28 through a socket bearing. The other end of the linkage rod 40 penetrates through the outer wall of the corresponding side cylinder 32 movably. One end of the linkage rod 40 located in the cavity of the corresponding side cylinder 32 is fixedly connected with an eccentric feeding wheel 41, and the eccentric feeding wheel 41 is in an inclined state. A plurality of groups of blades 42 are fixedly installed on the outer wall of the linkage rod 40 located in the cavity of the vertical cylinder 28. The blades 42 are arc-shaped. The blades 42 on each linkage rod 40 are symmetrically arranged up and down, and the blades 42 on the two side linkage rods 40 are symmetrically arranged left and right.

[0038] During operation, when the crank 38 rotates, the crank 38 drives the linkage rods 40 on both sides to rotate. When the linkage rods 40 rotate, the linkage rods 40 drive their respective eccentric feeding wheels 41 to rotate. The eccentric feeding wheels 41 rotate on the lower side inside the side cylinder 32. The eccentric feeding wheels 41 and the linkage rods 40 are in an eccentric connection state. Therefore, when the eccentric feeding wheels 41 continuously rotate, the eccentric feeding wheels 41 can rotate and convey the fertilizer particles that fall into the side cylinder 32 downward. When the eccentric feeding wheels 41 rotate and convey, they can rotate and press the fertilizer particles into the soil. Some fertilizer particles may directly fall into the soil layer through the side cylinder 32. When the eccentric ends of the eccentric feeding wheels 41 rotate, they can press the fertilizer particles once, enabling them to further penetrate into the soil layer. Moreover, the rotational setting of the eccentric feeding wheels 41 can prevent the problem that the side cylinder 32 is blocked by soil when it moves in the soil layer. Because the eccentric feeding wheels 41 continuously rotate eccentrically, it can not only accelerate the fertilizer conveyance but also prevent soil from entering the side cylinder 32 at the same time.

[0039] Furthermore, if it is necessary to use the humic solution and biochar particles synchronously, at this time, after the humic solution and biochar particles enter the vertical cylinder 28, the rotation of the linkage rods 40 synchronously drives the blades 42 to rotate. When the blades 42 rotate, they can rotate and stir the humic solution and biochar particles that enter the cavity of the vertical cylinder 28. The setting of the blades 42 can perform an up-and-down rotational stirring, enabling the biochar particles to better mix with the humic solution. After mixing, it is pressed into the soil layer through the up-and-down swinging of the feeding plate 39. The setting of the blades 42 can also play a certain role in crushing the biochar particles. The biochar particles may become biochar powder. The mixture of the biochar powder and the humic solution can form a suspension, which is more conducive to soil remediation. Even if the biochar particles are not broken into powder by the blades 42, the biochar particles and the humic solution can still play a role in soil remediation.

[0040] It should be noted that if the humic solution is not used and only biochar particles are added to the vertical cylinder 28, when the crank 38 rotates, the crank 38 also drives the blades 42 to rotate, which may also play a role in crushing the biochar particles that fall at this time. Whether the biochar particles are crushed or not does not affect the improvement and remediation of the soil. Biochar is a carbon-rich solid product generated by the pyrolysis of agricultural and forestry waste under anaerobic or anoxic conditions. The agricultural and forestry waste can be straw, fruit shells, wood chips, etc. Biochar has a carbon content as high as 60% - 80% and has a porous structure. Biochar can neutralize acidic soil and increase the solubility of phosphorus in calcium magnesium phosphate fertilizer. Biochar particles can adsorb Ca 2+ , Mg 2+ and PO4 3-, reduce leaching and extend the fertilizer efficiency cycle. Moreover, biochar provides a habitat site for phosphate-solubilizing bacteria, promoting the activation of insoluble phosphorus. The reason for adding biochar particles through the aggregate box in this solution is that compared with biochar powder, biochar particles are not prone to dusting. Even if some biochar particles are broken by the rotation of the blade 42 in the vertical cylinder 28, the dusting occurs within the vertical cylinder 28, avoiding a large amount of dust from getting into the air. The dusting within the vertical cylinder 28 is relatively safe.

[0041] Specifically, when amending and repairing the soil, fertilizer particles are conveyed into the soil layer through the side cylinder 32. The fertilizer particles can be calcium magnesium phosphate fertilizer. Biochar (particles or powder) and humic solution are conveyed into the soil layer through the discharge cylinder 30 and the discharge groove 31. The relative depth at which the biochar and the humic solution are conveyed into the soil layer is deeper than that of the fertilizer particles. Therefore, it can avoid the problem of pH imbalance caused by the direct contact between biochar and fertilizer particles (calcium magnesium phosphate fertilizer). It should be noted that the depth of the discharge cylinder 30 in the operation of this technical solution is limited to the soil layer of 20 - 50 cm, because the implementation of biochar can achieve better effects in the soil of 20 - 50 cm. The operation depth of the side cylinder 32 is lower than that of the discharge cylinder 30, and the operation depth of the side cylinder 32 is limited to the shallow soil layer of 10 - 15 cm, so that the fertilizer particles can be discharged into it. Although the discharge cylinder 30 and the side cylinder 32 use a reciprocating shaking method for discharge and repair during discharging, the amplitude of their shaking can be limited, as long as it meets the requirement of vibrating and discharging in the appropriate soil layer.

[0042] Biochar can increase soil porosity, improve the aeration and water permeability of deep soil. Functional groups such as carboxyl and phenolic hydroxyl groups on the biochar surface can form organic-inorganic complexes with soil minerals, enhancing the stability of deep soil aggregates. The biochar surface can also adsorb and precipitate some heavy metals; the humic solution can preferably be a humic acid solution. The humic acid solution can neutralize the alkalinity of biochar, forming a local pH buffer zone to avoid a sudden increase in the surface soil pH. The carboxyl and phenolic hydroxyl functional groups of the humic acid solution wrap Ca 2+ , PO4 3- in the calcium magnesium phosphate fertilizer to form a slow-release complex. Therefore, it can improve the utilization rates of nitrogen and phosphorus; moreover, the humic acid solution, biochar particles and powder can form a colloidal suspension to a certain extent. The colloidal suspension can increase the water holding capacity of the soil, lock water, and the humic acid also serves as a carbon source for microorganisms, stimulating the proliferation of actinomycetes and bacilli, improving the activities of soil urease and phosphatase. The humic acid-biochar complex is loaded with phosphate-solubilizing bacteria, promoting phosphorus mineralization.

[0043] It is understood that the present invention is described by way of some embodiments, and those skilled in the art will know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present invention. Additionally, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. An agricultural soil improvement and repair device, comprising a repair vehicle (10), characterized in that, A height adjustment device is arranged in the cavity of the repair vehicle (10). The height adjustment device includes a hydraulic cylinder (12), a height adjustment plate (11) and stroke side plates (13). The hydraulic cylinder (12) is fixedly installed on the top wall surface in the cavity of the repair vehicle (10). The number of the stroke side plates (13) is two groups. The two groups of stroke side plates (13) are respectively fixedly connected to the bottom end wall surfaces on both sides of the height adjustment plate (11). The stroke side plates (13) are in contact with the inner walls on both sides in the cavity of the repair vehicle (10). The hydraulic rod of the hydraulic cylinder (12) is fixedly connected to the top of the height adjustment plate (11). A plurality of depth adjustment components are arranged between the two groups of stroke side plates (13). A feeding structure matching with each depth adjustment component is arranged below each depth adjustment component. The depth adjustment component includes a servo motor (17), a rotating rod (18) and an eccentric guide wheel (19). The servo motor (17) is fixedly installed on a side wall surface of the stroke side plate (13) through a bracket. The output end of the servo motor (17) is fixedly connected to the rotating rod (18) through a coupling. The other end of the rotating rod (18) is rotatably connected to the inner wall of the stroke side plate (13) on the other side. The eccentric guide wheel (19) is fixedly sleeved on the rotating rod (18). The feeding structure includes a first feeding cylinder, a second feeding cylinder, a second guide rod (22) and a piston-type reciprocating feeding structure. A through hole (16) corresponding to the position of the feeding structure is opened on the bottom wall surface of the repair vehicle (10). The number of the second feeding cylinders is two. The two second feeding cylinders are distributed on both sides of the first feeding cylinder. The piston-type reciprocating pushing structure is located in the cavity of the first feeding cylinder. The second guide rod (22) is arranged together with the piston-type reciprocating pushing structure. The top end of the second guide rod (22) is movably arranged with the eccentric guide wheel (19). A plurality of aggregate bins are arranged on the top of the height adjustment plate (11). A plurality of first feeding pipes are arranged on the first feeding cylinder. Second feeding pipes are arranged on the second feeding cylinders. The aggregate bins are connected to the first feeding pipes and the second feeding pipes through water pumps or pneumatic conveying pumps.

2. The agricultural soil improvement and remediation device according to claim 1, wherein The eccentric guide wheel (19) is provided with a helically wound guide groove (20), the head and tail ends of the guide groove (20) are connected, the blanking structure further includes two first guide rods (21), the tops of the first guide rod (21) and the second guide rod (22) are in a state of arc-shaped protrusions, the tops of the first guide rod (21) and the second guide rod (22) are respectively located in the corresponding guide grooves (20), the diameter ratio of the eccentric guide wheel (19) corresponding to the first guide rod (21) up and down is smaller than that of the eccentric guide wheel (19) corresponding to the second guide rod (22) up and down, the two first guide rods (21) are located on both sides of the first blanking cylinder, the bottoms of the two first guide rods (21) are movably sleeved with limit bottom sleeves (45), the bottoms of the limit bottom sleeves (45) are fixedly connected with limit sliding plates (47), the bottoms of the limit sliding plates (47) are fixedly connected with second sliders (50), a second chute (48) engaged with the second slider (50) is opened at the bottom of the cavity of the repair vehicle (10), and a spring (46) is fixedly installed at the bottom of the cavity of the limit bottom sleeve (45); a guide sleeve (24) is movably sleeved on the lower outer wall of the second guide rod (22), a first connecting rod (23) is fixedly installed between the guide sleeve (24) and the corresponding first guide rod (21) on one side, a connecting plate (25) is fixedly provided at the bottom end of the guide sleeve (24), a tension spring (26) is fixedly provided at the bottom end of the connecting plate (25), and the second guide rod (22) penetrates through the tension spring (26).

3. The agricultural soil improvement and remediation device according to claim 2, characterized in that, The first blanking cylinder includes a vertical cylinder (28), a guide cylinder (29) and a discharge cylinder (30), the guide cylinder (29) is in a trumpet shape, the guide cylinder (29) is fixedly connected to the top wall surface of the vertical cylinder (28), the discharge cylinder (30) is in a flat shape, the discharge cylinder (30) is fixedly connected to the bottom wall surface of the vertical cylinder (28), and an arc-shaped opening discharge groove (31) is opened at the bottom of the discharge cylinder (30); a through hole (27) is opened at the central position of the top of the guide cylinder (29), and the bottom end of the second guide rod (22) extends into the cavity of the guide cylinder (29); the first feed pipe is fixedly installed on the guide cylinder (29); the second blanking cylinder includes a side cylinder (32) and a side feed cylinder (49), the side cylinder (32) and the side feed cylinder (49) are fixedly connected, a third connecting rod (44) is fixedly connected between the first guide rod (21) and the corresponding side feed cylinder (49) on one side, the side feed cylinder (49) is in a state where the inner diameter gradually decreases from top to bottom, a second connecting rod (33) is fixedly installed between the side cylinder (32) and the vertical cylinder (28), the side cylinder (32) and the side feed cylinder (49) are in an overall inclined state, the side feed cylinder (49) is horizontally aligned with the top of the guide cylinder (29), the inclined bottom end of the side cylinder (32) is close to the lower outer wall of the vertical cylinder (28), and the second feed pipe is fixedly installed on the top of the side feed cylinder (49).

4. The agricultural soil improvement and restoration device according to claim 3, characterized in that, The piston reciprocating feeding structure includes a convex block (43). The convex block (43) is a hemisphere. The bottom end of the second guide rod (22) is fixedly connected to the spherical top of the convex block (43). The bottom end of the tension spring (26) is fixedly connected to the top wall surface of the convex block (43). A connecting block (34) is fixedly provided at the bottom end of the convex block (43). A swing groove (35) is formed at the bottom of the connecting block (34). A pin rod (51) is fixedly provided in the swing groove (35). A driving connecting rod (36) is rotatably sleeved on the pin rod (51). A connecting sleeve (37) is fixedly connected to the bottom end of the driving connecting rod (36). A crank (38) is rotatably installed in the connecting sleeve (37). Link rods (40) are fixedly connected to the outer walls of the two ends of the crank (38). The link rods (40) are rotatably connected to the wall surfaces of the corresponding vertical cylinders (28).

5. The agricultural soil improvement and remediation device according to claim 4, characterized in that, The link rod (40) is rotatably connected to the inner wall of the vertical cylinder (28) through a socket bearing. The other end of the link rod (40) penetrates through the outer wall of the corresponding side cylinder (32) movably. An eccentric feeding wheel (41) is fixedly connected to the end of the link rod (40) located in the cavity of the corresponding side cylinder (32). The eccentric feeding wheel (41) is in an inclined state.

6. The agricultural soil improvement and remediation device according to claim 4, characterized in that, A plurality of groups of blades (42) are also fixedly installed on the outer wall of the link rod (40) located in the cavity of the vertical cylinder (28). The blades (42) are arc-shaped. The blades (42) on each link rod (40) are symmetrically arranged up and down. The blades (42) on the link rods (40) on both sides are symmetrically arranged left and right.

7. The agricultural soil improvement and remediation device according to claim 4, characterized in that, A feeding plate (39) facing downwards is fixedly connected to the bottom of the connecting sleeve (37). The feeding plate (39) is fan-shaped. The side of the feeding plate (39) away from the connecting sleeve (37) is in a state where the thickness gradually increases. The end of the feeding plate (39) away from the connecting sleeve (37) is convex downwards in an arc shape. The feeding plate (39) corresponds to the discharging groove (31) in the up and down position.

8. The agricultural soil improvement and remediation device according to claim 1, characterized in that, First sliders (14) are also fixedly installed on the outer walls of the two groups of stroke side plates (13). First sliding grooves (15) are formed on the inner walls of both sides in the cavity of the repair vehicle (10). The first sliders (14) are slidably connected to the first sliding grooves (15).

9. The agricultural soil improvement and remediation device according to claim 1, characterized in that, A storage battery is also arranged on the top wall surface of the height adjustment plate (11). The storage battery is electrically connected to the water pump and the pneumatic conveying pump. A paddy field wheel is movably installed on the bottom outer wall of the repair vehicle (10). A towing hook is installed on the lower side outer wall at the front end of the repair vehicle (10).

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