An auxiliary device for soil salinization treatment

Abstract

The application discloses a soil saline-alkali treatment auxiliary device, which comprises a moving platform, a liquid spraying unit, a granular throwing unit, a powdery spreading unit and a control unit. The liquid spraying unit is installed on the moving platform and is used for spraying liquid materials. The granular throwing unit is installed on the moving platform and is arranged at intervals with the liquid spraying unit on the moving platform. The granular throwing unit is used for throwing granular materials. The powdery spreading unit is installed at the bottom of the moving platform and is communicated with the granular throwing unit. The distance between the outlet of the powdery spreading unit and the ground is adjustable. The powdery spreading unit is used for spreading powdery materials. The control unit is used for opening or closing at least one of the liquid spraying unit, the granular throwing unit and the powdery spreading unit. The soil saline-alkali treatment auxiliary device can improve the application efficiency of soil conditioners.

Description

Technical Field

[0001] This invention belongs to the field of soil remediation equipment technology, specifically relating to an auxiliary device for soil salinity and alkalinity remediation. Background Technology

[0002] Soil salinity and alkali management is an important part of improving and utilizing saline-alkali land. In the process of adjusting acidity and reducing alkali, it is usually necessary to spread fine powder materials such as sulfur powder on the field, or to spread granular materials such as stone powder particles on the field, or to spray water-soluble soil conditioners on the field.

[0003] In related technologies, in order to implement the application of three different forms of soil amendments, it is usually necessary to configure multiple models of soil amendment application devices. This not only increases the equipment procurement cost, but also affects the efficiency of operation due to the coordination between the devices. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an auxiliary device for soil salinization control, comprising: Mobile platform; A liquid spraying unit is installed on the mobile platform and is used to spray liquid materials. A particle spraying unit is installed on the mobile platform, and a liquid spraying unit and the particle spraying unit are arranged at intervals on the mobile platform. The particle spraying unit is used to spray granular materials. A powder spreading unit is installed at the bottom of the mobile platform. The powder spreading unit is connected to the particle throwing unit, and the distance between the outlet of the powder spreading unit and the ground is adjustable. The powder spreading unit is used to spread powdery materials. A control unit, which is used to turn on or off at least one of the liquid spraying unit, the particle scattering unit, and the powder spreading unit.

[0005] This configuration integrates liquid spraying, granule spreading, and powder spreading units on the same mobile platform, with the control unit selectively activating or deactivating the corresponding units. This allows for the application of liquid, granular, and powdery materials in soil salinization remediation to be completed on a single device, avoiding the need for redundant purchases and frequent relocation of multiple single-function equipment. Simultaneously, the adjustable distance between the powder spreading unit's outlet and the ground allows the powder to be spread with a smaller drop, reducing airflow disturbance during the powder's descent. This effectively reduces dust at the work site, improves powder spreading efficiency, and enhances the working environment.

[0006] In some embodiments, the granular spreading unit includes a storage bin, a first conveying component, and a spreading component. The storage bin is hollow and used to store granular materials and / or powdery materials. The feed end of the first conveying component extends into the storage bin, and the discharge end of the first conveying component is connected to the feed end of the spreading component. The discharge end of the spreading component faces outward, and the spreading component is used to spread the granular materials onto the soil to be improved.

[0007] This design allows for the storage silo to be hollow to accommodate granular and powdery materials, enabling the co-storage of materials in different forms and simplifying the structural complexity of the feeding system. The inlet end of the first conveying component extends into the storage silo, ensuring continuous extraction of materials from the silo to the outlet end and preventing material stagnation. The outlet end of the first conveying component is connected to the spreading component, and the outlet end of the spreading component faces outward, creating a continuous material channel from storage to release, ensuring that granular materials are smoothly and efficiently spread to the target soil area.

[0008] In some embodiments, the dispensing component includes a rotating box, a dispensing disc, and a first driving member. The rotating box is mounted on top of the storage silo and is rotatable relative to the storage silo. The dispensing disc is located at the bottom of the rotating box and is rotatable relative to the rotating box. The fixed end of the first driving member is connected to the storage silo, and the movable end of the first driving member is connected to the rotating box to drive the rotating box to rotate relative to the storage silo.

[0009] With this setup, the rotating box rotates relative to the storage bin, dynamically adjusting the circumferential angle at which the material is thrown out, thus expanding the coverage width of a single operation. The throwing disc rotates independently at the bottom of the rotating box, using centrifugal force to throw the material out at high speed, increasing the throwing distance. The first drive component is fixed to the storage bin and drives the rotating box to rotate, providing an independent power source for adjusting the throwing angle. This allows the throwing range to be precisely adapted to the width of the field ridges, improving the uniformity of the material landing point.

[0010] In some embodiments, the first conveying component includes a feed cylinder, a feed baffle, and a first conveying auger. The feed cylinder extends vertically through the storage hopper and has multiple feed inlets. The multiple feed inlets are arranged at intervals along the vertical direction and are also arranged at intervals around the circumference of the feed cylinder. The feed baffle is installed inside the feed cylinder, with its outer wall surface in contact with the inner wall surface of the feed cylinder. The feed baffle has multiple openings, which are arranged vertically at intervals and circumferentially around the feed cylinder. The intervals between the openings and the feed inlets on the circumference of the feed cylinder are staggered. The feed baffle is rotatable relative to the feed cylinder so that at least one opening communicates with at least one feed inlet, allowing material from the storage bin to enter the feed cylinder. The first conveying auger is vertically inserted into the feed cylinder, and the outlet of the first conveying auger is connected to the rotating box.

[0011] With this configuration, multiple feed inlets are arranged vertically and circumferentially on the periphery of the feed cylinder, increasing the contact area of ​​the material entering the cylinder and effectively preventing bridging or voids in the storage bin. The openings on the feed baffle are staggered with the feed inlets circumferentially. By rotating the feed baffle, the overlap area between the openings and feed inlets can be controlled, thus adjusting the feed flow rate. The material at different positions can also be conveyed by selecting the overlap height between the openings and feed inlets. The first conveying auger is vertically arranged inside the feed cylinder, stably lifting and conveying the material entering the feed cylinder to the rotary box, ensuring the continuity and stability of the material conveying process.

[0012] In some embodiments, a driver is provided on the top of the first conveying auger, the output shaft of the driver is connected to the first conveying auger, a drive wheel is provided on the output shaft of the driver, and a driven wheel is provided on the rotating shaft of the throwing disc, and the drive wheel drives the driven wheel to rotate through a transmission component.

[0013] With this configuration, the drive wheel on the output shaft of the driver drives the driven wheel on the rotating shaft of the throwing disc through the transmission components, and simultaneously distributes a single power source to both the material lifting of the first conveying auger and the material throwing of the throwing disc. This reduces the number of additional drive devices required, lowers the overall energy consumption and manufacturing cost of the equipment, and ensures the matching of the conveying speed and the throwing speed, maintaining a dynamic balance between material supply and throwing.

[0014] In some embodiments, the powder spreading unit includes a distributing hopper, a second conveying auger, a distributing roller, and a spreading shell. The storage silo has an outlet at its bottom, and the inlet of the distributing hopper is connected to the outlet of the storage silo. The second conveying auger is installed inside the distributing hopper and is arranged horizontally. The distributing roller is located below the second conveying auger and is arranged parallel to it. The distributing roller has multiple distributing grooves, which are spaced apart circumferentially along the roller. The distributing roller is rotatable relative to the distributing hopper. The spreading shell is located below the distributing roller, and its lower end has an outlet. The distance between the bottom of the spreading shell and the ground is adjustable.

[0015] With this setup, the distribution hopper works in conjunction with the second conveying auger to initially level the powder output from the storage silo in a horizontal direction. The distribution grooves arranged circumferentially on the distribution roller quantitatively intercept and separate the accumulated powder, ensuring the uniformity of powder output. The spreading shell is located below the distribution roller, and the distance between its bottom outlet and the ground is adjustable, allowing the powder to be spread close to the ground with a small drop, reducing airflow disturbance during the powder's fall, thereby effectively reducing dust at the work site. This not only prevents the powder from being blown away by the wind before output but also allows for adjustment of the spreading height according to the flatness of the ground, improving the accuracy and uniformity of powder landing.

[0016] In some embodiments, the second conveying auger has a first conveying section and a second conveying section, the first conveying section and the second conveying section are symmetrically arranged along the length of the second conveying auger, and the outlet of the storage bin is located directly above the intersection of the first conveying section and the second conveying section.

[0017] With this configuration, the first and second conveying sections of the second conveying auger are symmetrically arranged along the length direction, and the outlet of the storage bin is located directly above the intersection of the two. This allows the powder to be evenly distributed to the two conveying sections and conveyed synchronously to both sides when it falls, avoiding the accumulation of powder in the middle of the distribution hopper and improving the uniformity of the lateral distribution of the powder.

[0018] In some embodiments, the spreading shell includes an interconnected shell and a folding portion, the shell being connected to the distributing hopper, the folding portion being installed at the bottom of the shell, and the folding portion being foldable or unfoldable in the vertical direction to adjust the spacing between the spreading shell and the ground.

[0019] With this design, the folding part of the spreading shell can be folded or unfolded in the vertical direction. The distance between the lower end of the shell outlet and the ground can be directly changed through physical expansion and contraction. This allows it to adapt to the spreading needs of different soils without changing any parts. It can prevent dragging when operating in high ground clearance and reduce dust when performing fine operations, thus enhancing the adaptability of the device to different field terrains.

[0020] In some embodiments, the powder spreading unit further includes a distribution plate located at the inlet of the distribution hopper and the outlet of the storage bin, the distribution plate being used to connect or disconnect the connection between the storage bin and the distribution hopper.

[0021] With this configuration, the distribution plate is located at the outlet connection between the distribution hopper and the storage bin. By physically isolating or connecting the two, it enables real-time start-stop control of the powder material supply, avoiding continuous leakage of powder when the equipment turns or pauses briefly, reducing material waste, and also facilitating the complete cut-off of the material flow after the operation, preventing residual material from getting damp, caking, and blocking the channel.

[0022] In some embodiments, the liquid spraying unit includes a spraying component, a storage tank, and a booster. The storage tank and the booster are mounted on the mobile platform. The outlet of the storage tank is connected to the inlet of the booster, and the outlet of the booster is connected to the spraying component.

[0023] With this setup, the storage tank provides storage space for the liquid amendment, and the booster pressurizes the liquid output from the storage tank, improving the atomization effect and range of the liquid sprayed from the spraying components. The booster outlet is directly connected to the spraying components, ensuring stable pressure transmission, so that the liquid material can be evenly covered on the surface of the soil to be improved, thereby improving the absorption efficiency of the water-soluble amendment and the quality of the operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the soil salinity treatment auxiliary device according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the soil salinity control auxiliary device from another perspective, according to an embodiment of the present invention.

[0026] Figure 3 This is a partial structural schematic diagram of the soil salinity control auxiliary device according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the granule spreading unit and the powder spreading unit of the soil salinity control auxiliary device according to an embodiment of the present invention.

[0028] Figure 5 This is a cross-sectional view of the first conveying component according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the spraying component according to an embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the spraying component from another angle according to an embodiment of the present invention.

[0031] Figure label: Mobile platform 100, liquid spraying unit 200, granule spreading unit 300, powder spreading unit 400 Storage bin 1, First conveying component 2, feed cylinder 21, feed inlet 211, feed baffle 22, opening 221, first conveying auger 23. Spraying component 3, rotating box 31, throwing disc 32, first driving component 33, rotating shaft 34. 4. Material distribution hopper, 5. Second conveying auger, 51. First conveying section, 52. Second conveying section, 6. Material distribution roller, 7. Spreading shell, 8. Material distribution plate, 9. Spraying component, 10. Drive wheel, 11. First support, 12. Second support, 13. Limiting plate. Detailed Implementation

[0032] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0033] This invention discloses an auxiliary device for soil salinization control, comprising a mobile platform 100, a liquid spraying unit 200, a granule throwing unit 300, a powder spreading unit, and a control unit. The liquid spraying unit 200 is installed on the mobile platform 100 and is used to spray liquid materials. The granule throwing unit 300 is installed on the mobile platform 100 and is arranged at intervals on the mobile platform 100. The granule throwing unit 300 is used to throw granular materials. The powder spreading unit is installed at the bottom of the mobile platform 100 and is connected to the granule throwing unit 300. The distance between the outlet of the powder spreading unit and the ground is adjustable. The powder spreading unit is used to spread powdery materials. The control unit is used to turn on or off at least one of the liquid spraying unit 200, the granule throwing unit 300, and the powder spreading unit.

[0034] See Figure 1 and Figure 2As shown, the mobile platform 100 includes a support platform. The support platform is a horizontally arranged plate-like frame structure, for example, welded from carbon steel profiles, with a rust-proof paint coating on the surface. A movable part is provided at the bottom of the support platform, which supports the entire machine and drives the machine to move.

[0035] The central area at the top of the support platform is used to install the storage bin 1 of the granule spreading unit 300, the front area at the top of the support platform is used to install the liquid spraying unit 200, and the bottom area of ​​the support platform is used to install the powder spreading unit. The moving part includes a support frame fixed to the bottom of the support platform. The support frame is a rectangular frame structure, welded from channel steel or rectangular tubing. The outer dimensions of the support frame are adapted to the support platform, providing a stable installation foundation for each functional unit. Battery boxes are fixed to both sides of the bottom of the support platform. The battery boxes are sealed enclosures containing batteries and power management circuitry. The batteries provide power to all electrical components of the machine. The symmetrical arrangement of the battery boxes on both sides of the bottom of the support platform helps lower the center of gravity of the machine and improves its stability during field operations.

[0036] A rotary drive motor is vertically fixed at each of the four corners of the supporting frame. The rotary drive motor is a DC geared motor with its output shaft pointing vertically downwards. A rotating bracket is fixedly connected to the output end of each rotary drive motor. The rotating bracket has an inverted U-shaped fork structure. The upper end of the rotating bracket is fixedly connected to the output shaft of the rotary drive motor, and drive wheels 10 are rotatably mounted between the two side walls of the lower end of the rotating bracket. A first drive motor is fixedly connected to the outer side of the rotating bracket. The output shaft of the first drive motor is connected to the axle of the drive wheels 10 for driving the drive wheels 10 to rotate.

[0037] For example, the drive wheel 10 is a rubber wheel with anti-slip treads, and its outer diameter can be selected according to the requirements of field passability. Since the four rotating supports are driven independently by four rotary drive motors, the orientation of each drive wheel 10 can be adjusted independently, enabling the machine to achieve various traveling postures. When the orientation of the four drive wheels 10 is the same, the machine travels in a straight line; when the orientation of the two drive wheels 10 is opposite, the machine can turn in place; when the orientation of the four drive wheels 10 is perpendicular to the longitudinal axis of the machine, the machine can move laterally. In the case of narrow field ridges or limited space at the edge of saline-alkali land, the in-place turning function allows the machine to change lanes without making a large U-turn, reducing soil compaction damage; the lateral movement function allows the machine to work close to the edge of the field, avoiding missed applications.

[0038] With this configuration, by integrating a liquid spraying unit 200, a granular scattering unit 300, and a powder spreading unit on the same mobile platform 100, and by having the control unit selectively turn the corresponding units on or off, the application of liquid, granular, and powdery materials in soil salinization remediation can be completed on the same equipment. This avoids the need for repeated purchases of multiple single-function equipment and frequent relocation. At the same time, the distance between the outlet of the powder spreading unit and the ground is adjustable, allowing the powder to be spread close to the ground with a smaller drop, reducing airflow disturbance during the powder's fall, thereby effectively reducing dust at the work site, improving the powder spreading effect, and improving the working environment.

[0039] In some embodiments, the pellet spreading unit 300 includes a storage bin 1, a first conveying component 2, and a spreading component 3. The storage bin 1 is hollow inside and is used to store granular materials and / or powdery materials. The feed end of the first conveying component 2 extends into the storage bin 1, and the discharge end of the first conveying component 2 is connected to the feed end of the spreading component 3. The discharge end of the spreading component 3 faces the outside, and the spreading component 3 is used to spread the granular materials onto the soil to be improved.

[0040] See Figure 3 and Figure 4 As shown, the pellet dispensing unit 300 is installed in the middle of the support platform. The pellet dispensing unit 300 includes a storage bin 1, a first conveying component 2, and a dispensing component 3. The storage bin 1 is hollow inside and is used to store granular materials and / or powdery materials.

[0041] For example, the upper part of the storage silo 1 is a cylindrical section, and the lower part is a conical converging section, with the lower end of the conical converging section forming a discharge port. This discharge port also serves as the inlet 211 of the powder spreading unit, through which the powder in the storage silo 1 enters the distribution hopper 4. The capacity of the storage silo 1 can be determined according to the operating width and endurance requirements, for example, a capacity of 200 liters to 600 liters. The top of the storage silo 1 is provided with a feeding port, and an openable silo cover is installed at the feeding port. The silo cover is connected to the top edge of the storage silo 1 by a hinge, and the opening side of the silo cover is fixed to the storage silo 1 by a buckle. The storage silo 1 is fixedly installed in the middle of the support platform, and the central axis of the storage silo 1 is set in the vertical direction. The upper part of the side wall of the storage silo 1 is provided with a material balance observation window for manual inspection of the remaining material in the silo.

[0042] It should be noted that the storage silo 1 can store granular materials or powdered materials separately. Alternatively, the powdered materials can be placed in the lower half of the storage silo 1 and the granular materials can be placed in the upper half of the storage silo 1. In other words, granular materials and powdered materials can be mixed in the storage silo 1 with the granular materials located above the powdered materials.

[0043] With this configuration, the storage bin 1 is hollow to accommodate granular and powdery materials, realizing the co-storage of materials of different forms and simplifying the structural complexity of the feeding system. The inlet end of the first conveying component 2 extends into the storage bin 1, ensuring the continuous extraction of materials from the bin to the outlet end and preventing material stagnation. The outlet end of the first conveying component 2 is connected to the spreading component 3, and the outlet end of the spreading component 3 faces the outside, constructing a continuous material channel from storage to release, ensuring that granular materials are smoothly and efficiently spread to the target soil area.

[0044] In some embodiments, the first conveying component 2 includes a feed cylinder 21, a feed baffle 22, and a first conveying auger 23. The feed cylinder 21 is vertically inserted into the storage bin 1. The feed cylinder 21 has multiple feed inlets 211, which are spaced apart vertically and circumferentially. A feed baffle 22 is installed inside the feed cylinder 21, with its outer wall surface in contact with the inner wall surface of the feed cylinder 21. The feed baffle 22 has multiple openings 221, which are arranged vertically at intervals and circumferentially around the feed cylinder 21. The intervals between the openings 221 and the feed inlets 211 are staggered along the circumference of the feed cylinder 21. The feed baffle 22 is rotatable relative to the feed cylinder 21 so that at least one opening 221 communicates with at least one feed inlet 211, allowing material from the storage bin 1 to enter the feed cylinder 21. The first conveying auger 23 is vertically inserted into the feed cylinder 21, and the outlet of the first conveying auger 23 is connected to the rotating box 31.

[0045] Specifically, see Figures 3 to 5 As shown, the feed cylinder 21 is vertically inserted into the storage bin 1. The feed cylinder 21 is a metal tube with a circular cross-section. The upper end of the feed cylinder 21 extends out of the top surface of the storage bin 1 and is located on the outside of the storage bin 1. The lower end of the feed cylinder 21 extends into the conical converging section of the storage bin 1. A bottom sealing plate is welded to the lower end face of the feed cylinder 21 to seal the lower end of the feed cylinder 21.

[0046] The feed cylinder 21 has multiple feed ports 211, which are arranged vertically at intervals and also circumferentially around the feed cylinder 21. The feed ports 211 can be rectangular, oblong, or circular, and their dimensions are determined by the particle size of the material, for example, a width of 30 to 60 millimeters and a height of 40 to 80 millimeters. The feed ports 211 can be evenly spaced along the circumference of the feed cylinder 21, or they can be non-uniformly arranged according to the material flow characteristics within the storage silo 1, so that material at different heights within the storage silo 1 can enter the feed cylinder 21 evenly.

[0047] A feed baffle 22 is installed inside the feed cylinder 21. The feed baffle 22 is a circular tubular structure, and its outer diameter is adapted to the inner diameter of the feed cylinder 21. The outer wall surface of the feed baffle 22 is in contact with the inner wall surface of the feed cylinder 21. The feed baffle 22 has multiple openings 221, which are arranged at intervals along the vertical direction. The multiple openings 221 are also arranged at intervals around the circumference of the feed cylinder 21, and the intervals between the multiple openings 221 and the multiple feed inlets 211 around the circumference of the feed cylinder 21 are staggered.

[0048] It should be noted that the feed baffle 22 is rotatable relative to the feed cylinder 21. When the feed baffle 22 rotates to a certain angle, at least one opening 221 corresponds to and is connected with at least one feed inlet 211, so that the material in the storage bin 1 can enter the interior of the feed cylinder 21 through the interconnected opening 221 and feed inlet 211.

[0049] When the feed baffle 22 rotates to another angle, the opening 221 is misaligned with the feed inlet 211, and the feed inlet 211 is blocked by the pipe wall of the feed baffle 22, so the material cannot enter the feed cylinder 21.

[0050] In this way, by adjusting the rotation angle of the feed baffle 22, the effective connection area of ​​the feed inlet 211 can be controlled, thereby adjusting the feed rate.

[0051] For example, the upper end of the feed baffle 22 extends through the top of the feed cylinder 21, and an adjusting handle or adjusting gear is provided at the upper end of the feed baffle 22. The operator can rotate the feed baffle 22 by adjusting the handle or adjusting gear. When a larger feed rate needs to be set, the opening 221 is completely aligned with the feed inlet 211, maximizing the material passage area; when a smaller feed rate needs to be set, the opening 221 is partially aligned with the feed inlet 211, reducing the material passage area, thereby achieving stepless adjustment of the feed rate.

[0052] Furthermore, by adjusting the alignment of the opening 221 with the feed inlet 211, materials from different positions can be selected to enter the feed cylinder 21. For example, when the materials in the storage bin 1 include granular materials and powdered materials, since the powdered materials are located below the granular materials, the granular materials can be thrown out through the granular throwing unit 300 and the powdered materials can be discharged through the powder spreading unit 400 by aligning the opening 221 located in the middle of the feed cylinder 21 with the feed inlet 211 located in the middle.

[0053] The first conveying auger 23 is vertically inserted into the feed cylinder 21. The first conveying auger 23 includes a rotating shaft and helical blades fixedly mounted on the rotating shaft. The outer diameter of the helical blades matches the inner diameter of the feed cylinder 21, and a small gap is left between the outer edge of the helical blades and the inner wall of the feed cylinder 21 to reduce material jamming. The lower end of the first conveying auger 23 is located at the bottom of the feed cylinder 21, and the upper end of the first conveying auger 23 extends from the upper end of the feed cylinder 21 and is located above the top of the storage hopper 1. The outlet of the first conveying auger 23 is connected to the rotating box 31; that is, the upper opening 221 of the feed cylinder 21 serves as the outlet of the first conveying auger 23. Material moves upward along the feed cylinder 21 under the push of the helical blades of the first conveying auger 23 and is discharged from the upper end of the feed cylinder 21.

[0054] With this configuration, multiple feed inlets 211 are arranged vertically and circumferentially on the periphery of the feed cylinder 21, increasing the contact area of ​​the material entering the cylinder and effectively preventing the material from forming bridging or voids in the storage bin 1. The openings 221 on the feed baffle 22 are staggered with the feed inlets 211 in the circumferential direction. By rotating the feed baffle 22, the overlapping area of ​​the openings 221 and the feed inlets 211 can be controlled, realizing the adjustment of the feed flow rate. The material at different positions can also be conveyed by selecting the overlap height of the openings 221 and the feed inlets 211. The first conveying auger 23 is arranged vertically in the feed cylinder 21, stably lifting and conveying the material entering the feed cylinder 21 to the rotating box 31, ensuring the continuity and stability of the material conveying process.

[0055] In some embodiments, a driver is provided on the top of the first conveying auger 23, the output shaft of the driver is connected to the first conveying auger 23, a drive wheel is provided on the output shaft of the driver, and a driven wheel is provided on the rotating shaft of the throwing disc 32, and the drive wheel drives the driven wheel to rotate through a transmission component.

[0056] In this way, the drive wheel on the output shaft of the driver drives the driven wheel on the rotating shaft of the throwing disc 32 through the transmission component, and distributes the single power source to both the material lifting of the first conveying auger 23 and the material throwing of the throwing disc 32. This reduces the number of additional drive devices, lowers the overall energy consumption and manufacturing cost of the equipment, and ensures the matching of the conveying speed and the throwing speed, maintaining the dynamic balance between material supply and throwing.

[0057] Optionally, see Figure 3 and Figure 4 As shown, a first bracket 11 is fixedly connected to the top of the storage silo 1. The first bracket 11 is a portal frame bracket, which is welded or fixedly connected to the top edge of the storage silo 1 by bolts. A driver is fixedly connected to the inner side of the first bracket 11. For example, the driver can be a second drive motor. The output shaft of the second drive motor extends downward in the vertical direction and is located above the top of the storage silo 1.

[0058] The output shaft of the second drive motor is fixedly connected to the upper end of the first conveying auger 23 via a coupling. When the second drive motor rotates, it drives the first conveying auger 23 to rotate synchronously. The second drive motor is a brushless DC motor, and its speed range can be adjusted by a controller to control the material conveying rate. The conveying capacity of the first conveying auger 23 is proportional to its speed. When it is necessary to increase the amount of material to be conveyed, the speed of the second drive motor is increased; when it is necessary to decrease the amount of material to be conveyed, the speed of the second drive motor is decreased.

[0059] A second support 12 is fixedly connected to the top of the storage silo 1. The second support 12 is located on the side of the first support 11 and is a vertically arranged plate-shaped or column-shaped support. A fixed cover is fixedly connected to the middle of the second support 12. The fixed cover is a vertically arranged cylindrical body with a closed lower end and an open upper end 221. A feed pipe connector is provided on the side wall of the fixed cover, which is connected to one end of the discharge pipe. The other end of the discharge pipe is connected to the upper end of the feed cylinder 21. The central axis of the fixed cover is arranged vertically, and the cylindrical side wall of the fixed cover has a feed opening 221 that communicates with the discharge pipe.

[0060] In some embodiments, the spraying component 3 includes a rotating box 31, a spraying disc 32, and a first driving member 33. The rotating box 31 is installed on the top of the storage bin 1 and is rotatable relative to the storage bin 1. The spraying disc 32 is located at the bottom of the rotating box 31 and is rotatable relative to the rotating box 31. The fixed end of the first driving member 33 is connected to the storage bin 1, and the movable end of the first driving member 33 is connected to the rotating box 31 to drive the rotating box 31 to rotate relative to the storage bin 1.

[0061] Specifically, see Figure 3 and Figure 4 As shown, the rotating box 31 has a circular structure, with an open opening 221 on one side serving as a spray outlet. A mounting hole is located at the center of the top of the rotating box 31, through which it is fitted onto the outer circumference of the fixed cover. The inner diameter of the rotating box 31 is slightly larger than the outer diameter of the fixed cover, allowing the rotating box 31 to rotate freely around the axis of the fixed cover. A shaft hole is located at the center of the bottom of the rotating box 31, through which a rotating shaft 34 passes. The upper end of the rotating shaft 34 is located inside the rotating box 31, and the lower end is located below the rotating box 31. The rotating shaft 34 is rotatably supported at the bottom of the rotating box 31 by bearings.

[0062] A throwing disc 32 is installed on the inner bottom of the rotating box 31, and the throwing disc 32 is fixedly connected to the upper end of the rotating shaft 34. The throwing disc 32 has a disc-shaped structure, and multiple radially extending blades are arranged on its outer periphery. The multiple blades are evenly spaced along the circumference of the throwing disc 32, and the blades are distributed radially. The lower end of the rotating shaft 34 is located below the rotating box 31, and the lower end of the rotating shaft 34 is connected to the upper end of the first conveying auger 23 by a synchronous belt assembly.

[0063] Specifically, a drive pulley is fixedly installed at the upper end of the first conveying auger 23, and a driven pulley is fixedly installed at the lower end of the rotating shaft 34. The drive pulley is connected to the driven pulley via a synchronous belt. When the second drive motor drives the first conveying auger 23 to rotate, the drive pulley rotates synchronously, driving the driven pulley and the rotating shaft 34 to rotate via the synchronous belt. The rotating shaft 34 drives the throwing disc 32 to rotate at high speed within the rotating box 31. Since the rotational speed of the throwing disc 32 maintains a fixed transmission ratio with the rotational speed of the first conveying auger 23, there is a definite correspondence between the material conveying volume and the throwing speed, which facilitates the synchronous adjustment of the conveying volume and the throwing speed by controlling the rotational speed of the second drive motor.

[0064] The first driving component 33 is used to drive the rotating box 31 to rotate relative to the storage bin 1. For example, the first driving component 33 is an electric push rod. The top of the second support 12 is rotatably connected to the electric push rod. The fixed end of the electric push rod is rotatably connected to the second support 12 through the first hinge shaft, and the output end of the electric push rod is rotatably connected to the outer wall of the rotating box 31 through the second hinge shaft. The electric push rod is a DC electric push rod, and its stroke and speed are adjusted by a controller. When the electric push rod extends, the output end of the electric push rod pushes the outer wall of the rotating box 31, causing the rotating box 31 to rotate around the axis of the fixed cover in the first direction. When the electric push rod shortens, the output end of the electric push rod pulls the outer wall of the rotating box 31, causing the rotating box 31 to rotate around the axis of the fixed cover in the opposite direction to the first direction. By controlling the reciprocating extension and retraction of the electric push rod, the rotating box 31 can be made to swing back and forth within a preset angle range, thereby changing the orientation of the opening 221 of the rotating box 31, making the throwing direction of the granular material change periodically, and expanding the throwing width of a single operation.

[0065] For example, the extension and retraction frequency of the electric push rod is from 0.2 times per second to once per second, and the swing angle range of the rotating box 31 is from 15 degrees to 45 degrees, which can be adjusted according to the working width and travel speed. The swing of the rotating box 31 significantly increases the landing point range of the granular material in the lateral direction, thereby reducing omissions or overlaps in a single operation and improving the uniformity of spreading. In this embodiment, the extension and retraction movement of the electric push rod is limited by a limit switch installed on the second bracket 12. When the electric push rod extends or retracts to the set position, the limit switch sends a signal, and the controller controls the electric push rod to move in the opposite direction, thereby realizing the reciprocating swing of the rotating box 31.

[0066] For example, when only pellet spreading is required, the bottom outlet of storage silo 1 is blocked, preventing material in storage silo 1 from entering the powder spreading unit. By selecting the pellet spreading mode via the control panel, the controller starts the second drive motor, which drives the first conveying auger 23 to rotate. The pellet material in storage silo 1 gathers towards the bottom of storage silo 1 under gravity and enters the feed cylinder 21 through the feed inlet 211. Due to the opening 221 on the feed baffle 22, the material throughput is controlled.

[0067] Material entering the feed cylinder 21 moves upward under the propulsion of the spiral blades of the first conveying auger 23, enters the inner cavity of the fixed cover through the discharge pipe, and then enters the rotating box 31 through the feed opening 221 of the fixed cover. Simultaneously, the synchronous belt assembly drives the rotating shaft 34 and the throwing disc 32 to rotate at high speed. The granular material entering the rotating box 31 is thrown against the inner wall of the rotating box 31 by the centrifugal force of the throwing disc 32 and is then ejected through the opening 221 of the rotating box 31. The radial blades on the outer edge of the throwing disc 32 further disperse and accelerate the material, causing the granular material to be evenly ejected in an umbrella-like shape. During the scattering process, the control unit controls the electric push rod to reciprocate, causing the rotating box 31 to swing back and forth around the axis of the fixed cover, thus periodically changing the scattering direction between the left and right sides, expanding the width of a single operation. The moving platform 100 advances at a constant speed along the preset travel route, evenly covering the surface of the soil to be improved with granular material.

[0068] With this configuration, the rotating box 31 rotates relative to the storage bin 1, dynamically adjusting the circumferential angle of the material being thrown out and expanding the coverage width of a single operation; the throwing disc 32 rotates independently at the bottom of the rotating box 31, using centrifugal force to throw the material out at high speed, increasing the throwing distance of the material; the first driving component 33 is fixed to the storage bin 1 and drives the rotating box 31 to rotate, providing an independent power source for adjusting the throwing angle, so that the throwing range can be precisely adapted according to the width of the field ridges, improving the uniformity of the material landing point.

[0069] In some embodiments, the powder spreading unit 400 includes a distributing hopper 4, a second conveying auger 5, a distributing roller 6, and a spreading housing 7. The storage bin 1 has an outlet at its bottom. The inlet of the distributing hopper 4 is connected to the outlet of the storage bin 1. The second conveying auger 5 is installed inside the distributing hopper 4 and is arranged horizontally. The distributing roller 6 is located below the second conveying auger 5 and is arranged parallel to the second conveying auger 5. The distributing roller 6 is provided with a plurality of distributing grooves, which are arranged at intervals along the circumference of the distributing roller 6. The distributing roller 6 is rotatable relative to the distributing hopper 4. The spreading housing 7 is located below the distributing roller 6. The lower end of the spreading housing 7 has an outlet, and the distance between the bottom of the spreading housing 7 and the ground is adjustable.

[0070] See Figure 3 and Figure 4 As shown, the distributing hopper 4 is a bucket-shaped shell with a top opening 221. The upper opening 221 of the distributing hopper 4 is fixedly connected to the lower end of the storage bin 1 by a flange or bolts. The internal space of the distributing hopper 4 is connected to the internal space of the storage bin 1 through the outlet of the storage bin 1. The distributing hopper 4 is fixedly installed at the bottom of the support platform, and the length of the distributing hopper 4 in the horizontal direction is consistent with the width direction of the whole machine.

[0071] The second conveying auger 5 is installed inside the distribution hopper 4. The second conveying auger 5 is arranged in a horizontal direction. In other words, the extension direction of the second conveying auger 5 is parallel to the extension direction of the distribution hopper 4.

[0072] The material distribution roller 6 is located below the second conveying auger 5 and is arranged parallel to the second conveying auger 5. The material distribution roller 6 is a cylindrical roller body, and multiple material distribution grooves are provided on the outer circumferential surface of the material distribution roller 6 along the axial direction. The multiple material distribution grooves are arranged at intervals along the circumference of the material distribution roller 6 and extend along the axial direction of the material distribution roller 6. The cross-sectional shape of the material distribution groove is arc-shaped, rectangular or trapezoidal.

[0073] The axis of the distributing roller 6 is set in the horizontal direction, and both ends of the distributing roller 6 are rotatably supported on the side wall of the distributing hopper 4 by bearings. The end of the distributing roller 6 is provided with a driven gear or a driven sprocket, and the end of the second conveying auger 5 is provided with a corresponding driving gear or driving sprocket. The driving gear or driving sprocket is connected to the driven gear or driven sprocket through a transmission component.

[0074] Optionally, the distributing roller 6 is connected to the second conveying auger 5 via a gear transmission pair. When the second conveying auger 5 rotates, the distributing roller 6 rotates synchronously, and the speed ratio between the two is determined according to the diameter of the distributing roller 6 and the volume of the distributing trough. The speed of the distributing roller 6 is in a fixed proportion to the speed of the second conveying auger 5, thereby ensuring that the material taken up by the distributing roller 6 matches the material fed by the second conveying auger 5.

[0075] When the distributing roller 6 rotates, the distributing trough receives the powder at the top position of the roller 6, scooping the powder into it and carrying it forward in the direction of rotation. When the distributing trough rotates to below the roller 6, the opening of the trough faces downward, and the powder in the trough is released from the trough under gravity and falls into the spreading shell 7. The volume of the distributing trough limits the amount of material taken out at one time. By selecting distributing troughs of different volumes or adjusting the rotation speed of the distributing roller 6, quantitative control of the spreading amount can be achieved. The quantitative distributing principle of the distributing trough ensures that the amount of powder spread per unit time is uniform, avoiding local accumulation or material shortage caused by material flow fluctuations during the powder spreading process.

[0076] The spreading shell 7 is located below the distributing roller 6. The upper end of the spreading shell 7 is fixedly connected to the lower end of the distributing hopper 4. The lower end of the spreading shell 7 has an outlet facing the ground. The spreading shell 7 is a vertically arranged cylindrical or frustoconical structure, forming a channel inside for the powder to flow downwards. After the powder exits from the distributing groove of the distributing roller 6, it enters the internal channel of the spreading shell 7 and slides downwards under gravity, finally scattering onto the ground from the outlet at the lower end of the spreading shell 7. The distance between the lower outlet of the spreading shell 7 and the ground is adjustable to control the powder's falling height and prevent dust generation.

[0077] It should be noted that the smaller the distance between the outlet of the spreading shell 7 and the ground, the lower the height from which the powder falls, and the smaller the momentum of the powder when it lands, making it less likely to generate dust. At the same time, the smaller falling height also reduces the impact of crosswinds on the powder during its fall, which helps to improve the accuracy of the spreading position.

[0078] With this setup, the distribution hopper 4 works in conjunction with the second conveying auger 5 to initially flatten the powder output from the storage bin 1 in the horizontal direction. The distribution grooves arranged circumferentially on the distribution roller 6 quantitatively intercept and separate the accumulated powder, ensuring the uniformity of the powder output. The spreading shell 7 is located below the distribution roller 6, and the distance between its bottom outlet and the ground is adjustable, allowing the powder to be spread close to the ground with a small drop, reducing airflow disturbance during the powder's fall, thereby effectively reducing dust at the work site. This not only prevents the powder from being blown away by the wind before output but also allows for adjustment of the spreading height according to the flatness of the ground, improving the accuracy and uniformity of the powder's landing.

[0079] In some embodiments, the second conveying auger 5 has a first conveying section 51 and a second conveying section 52, which are symmetrically arranged along the length of the second conveying auger 5, and the outlet of the storage bin 1 is located directly above the intersection of the first conveying section 51 and the second conveying section 52.

[0080] See Figure 4 As shown, the first conveying section 51 and the second conveying section 52 are arranged symmetrically along the length of the second conveying auger 5 and their rotation directions are opposite. For example, the spiral blades of the first conveying section 51 rotate to the left, and the spiral blades of the second conveying section 52 rotate to the right. The joint between the first conveying section 51 and the second conveying section 52 is located at the center of the outlet of the storage bin 1.

[0081] Bearing mounting holes are provided on the left and right sides of the distribution hopper 4. The left end of the first conveying part 51 is rotatably supported on the left side wall of the distribution hopper 4 via bearings, and the right end of the second conveying part 52 is rotatably supported on the right side wall of the distribution hopper 4 via bearings. A third drive motor is fixedly installed on the outside of the distribution hopper 4, and the output shaft of the third drive motor is fixedly connected to the left end of the first conveying part 51 via a coupling. The third drive motor is a DC geared motor, and its speed is adjusted by a controller.

[0082] It should be noted that when the outlet of storage hopper 1 is opened, the powder falls from storage hopper 1 into the middle of distribution hopper 4 under the action of gravity, and lands near the joint of the second conveying auger 5. When the third drive motor drives the second conveying auger 5 to rotate, the powder is conveyed to the left and right sides respectively under the action of the left-hand rotating blades of the first conveying section 51 and the right-hand rotating blades of the second conveying section 52, forming a material flow that spreads to both sides, so that the powder is evenly distributed in the width direction of distribution hopper 4 and spread on the top of distribution roller 6. Since the rotation directions of the first conveying section 51 and the second conveying section 52 are opposite, they will push the material in the middle to both sides at the same time when they rotate, ensuring the distribution effect of powder and avoiding the accumulation of powder in the middle of distribution hopper 4.

[0083] With this configuration, the first conveying section 51 and the second conveying section 52 of the second conveying auger 5 are symmetrically arranged along the length direction, and the outlet of the storage bin 1 is located directly above the intersection of the two. This allows the powder to be evenly distributed to the two conveying sections and conveyed synchronously to both sides when it falls, avoiding the accumulation of powder in the middle of the distribution hopper 4 and improving the uniformity of the lateral distribution of the powder.

[0084] In some embodiments, the spreading shell 7 includes a shell and a folding part that are interconnected. The shell is connected to the distributing hopper 4, and the folding part is installed at the bottom of the shell. The folding part can be folded or unfolded in the vertical direction to adjust the spacing between the spreading shell 7 and the ground.

[0085] For example, the shell is a rigid cylinder, and the upper end of the shell is fixedly connected to the lower end of the distributing hopper 4 via a flange. A folding part is installed at the bottom of the shell. The folding part is a corrugated structure made of flexible materials such as rubber or plastic. The upper end of the folding part is connected to the lower end of the shell, and the lower end of the folding part forms the outlet of the spreading shell 7.

[0086] The folding section can be folded or unfolded in the vertical direction, thereby changing the distance between the outlet of the spreading shell 7 and the ground. Operators can manually compress or stretch the folding section as needed, or remotely adjust the extension or retraction of the folding section via ropes, electric cylinders, or other drive devices.

[0087] For example, when the powder particles being spread are small and prone to dust generation, the folded section can be compressed to its minimum length, bringing the outlet close to the ground, for example, about 20 to 50 millimeters above the ground, thereby minimizing the height difference of the falling powder. When the powder particles being spread are large and not prone to dust generation, the folded section can be stretched to an appropriate length, bringing the outlet about 100 to 200 millimeters above the ground, to increase the spreading width. The outlet end of the spreading shell 7 can also be equipped with a distribution plate, which has a grid-like or perforated structure. After being dispersed by the distribution plate, the powder falls evenly to the ground, further improving the spreading uniformity.

[0088] With this configuration, the folding part of the spreading shell 7 can be folded or unfolded in the vertical direction. The distance between the lower end outlet of the shell and the ground can be directly changed through physical expansion and contraction. It can adapt to the spreading needs of different soils without changing parts. It can prevent dragging when operating in high ground clearance and reduce dust when performing fine operations, thus enhancing the adaptability of the device to different field terrains.

[0089] In some embodiments, the powder spreading unit 400 further includes a distribution plate 8, which is located at the inlet of the distribution hopper 4 and the outlet of the storage bin 1. The distribution plate 8 is used to connect or disconnect the connection between the storage bin 1 and the distribution hopper 4.

[0090] See Figure 3 and Figure 4 As shown, the distributing plate 8 is a rectangular flat plate structure, horizontally positioned. Its width is slightly larger than the outlet diameter of the storage silo 1, and its length is greater than the sum of the outlet diameter of the storage silo 1 and the thickness of the side wall of the distributing hopper 4. A slot is provided on the upper side wall of the distributing hopper 4, through which the distributing plate 8 passes and slides horizontally within the distributing hopper 4. A pull ring or handle is provided at the outer end of the distributing plate 8, allowing the operator to manually insert or remove it. When the distributing plate 8 is horizontally inserted into the distributing hopper 4 and precisely blocks the outlet of the storage silo 1, the material in the storage silo 1 cannot fall into the distributing hopper 4 through the outlet, at which point the powder spreading unit is in the closed state.

[0091] When the distribution plate 8 is pulled outward until its blocking area is offset from the outlet of the storage bin 1, the outlet of the storage bin 1 opens, and the powder in the storage bin 1 enters the distribution hopper 4 through the outlet under the action of gravity, and the powder spreading unit starts to work.

[0092] Optionally, the distribution plate 8 can also be driven by an electric actuator controlled by a controller. For example, an electric push rod or linear motor can be connected to the outer end of the distribution plate 8, and the controller controls the extension and retraction of the electric push rod or linear motor to achieve automatic insertion and removal of the distribution plate 8. A sealing strip can be provided on the edge of the distribution plate 8 to improve the sealing effect and prevent powder leakage. The mechanical switching method of the distribution plate 8 is simple in structure and convenient in operation, making the switching process between the two modes of granule throwing and powder spreading fast and reliable.

[0093] It should be noted that during the powder spreading operation, the distribution plate 8 is pulled outward to the open position, connecting the outlet of the storage bin 1 to the inlet of the distribution hopper 4. The third drive motor is started, driving the second conveying auger 5 to rotate. Under the action of gravity, the powder in the storage bin 1 enters the middle area of ​​the distribution hopper 4 through the outlet of the storage bin 1. Under the action of the counter-rotating spiral blades of the first conveying section 51 and the second conveying section 52, the powder is conveyed to the left and right sides of the distribution hopper 4 respectively, forming a uniformly spread material layer, which continuously falls to the top of the distribution roller 6.

[0094] Driven by the transmission assembly, the distributing roller 6 rotates synchronously. The distributing trough continuously scoops up powder from the top of the distributing roller 6 and carries the powder below it, where it is discharged into the spreading shell 7 under gravity. After being guided and buffered by the spreading shell 7, the powder falls to the ground at a very low height from the outlet at the lower end of the spreading shell 7. Because the powder outlet is close to the ground and the spreading shell 7 has a deceleration and guiding effect on the powder, there is no strong airflow disturbance during the falling process, and the powder lands in a laminar flow state, which greatly reduces dust at the work site and improves the working environment. At the same time, because the reverse spiral structure of the second conveying auger 5 forces the powder to flow to both sides of the distributing hopper 4, the powder is evenly distributed in the width direction, which solves the problem of uneven lateral distribution of powder when the traditional powder spreading device operates in a wide range, and avoids local accumulation or material shortage.

[0095] With this configuration, the distribution plate 8 is located at the outlet connection between the distribution hopper 4 and the storage bin 1. By physically isolating or connecting the two, the instant start and stop control of the powder material supply is realized, avoiding the continuous leakage of powder when the equipment turns or pauses briefly, reducing material waste, and also making it easy to completely cut off the material flow after the operation is completed, preventing residual material from getting damp, caking and blocking the channel.

[0096] In some embodiments, the liquid spraying unit 200 includes a spraying component 9, a storage tank, and a booster. The storage tank and the booster are mounted on a mobile platform 100. The outlet of the storage tank is connected to the inlet of the booster, and the outlet of the booster is connected to the spraying component 9.

[0097] See Figure 1 and Figure 2 As shown, the liquid spraying unit 200 is mounted on top of the support platform. The liquid spraying unit 200 includes a storage tank, a booster, and spraying components 9. The storage tank is fixedly mounted on top of the support platform by limiting plates 13. The limiting plates 13 consist of two opposing arc-shaped plates, the inner diameter of which matches the outer diameter of the storage tank. The storage tank is embedded between the two arc-shaped plates and further secured by straps or buckles, ensuring stability of the storage tank during operation.

[0098] Optionally, the top of the storage tank is equipped with a filling port, which includes a filter screen and a sealing cap. The filter screen removes impurities from the liquid material to prevent clogging of the booster and atomizing nozzle, while the sealing cap prevents spillage and the entry of impurities. The booster is fixedly mounted on the top of the support platform. The booster uses a diaphragm pump or a plunger pump. The booster inlet is connected to the outlet at the bottom of the storage tank via a hose, and the booster outlet is connected to the spraying component 9 via a liquid outlet pipe.

[0099] Exemplarily, the spraying component 9 includes a rotating frame and a water pipe. The rotating frame is rotatably mounted on top of a support platform via a vertical pivot. The rotating frame is an L-shaped structure welded from metal tubing, with one end fitted onto the vertical pivot and the other end extending outwards from the support platform. The water pipe is fixedly connected to the extended end of the rotating frame, extending horizontally. Multiple atomizing nozzles are equidistantly arranged axially on the outer side of the water pipe, with the spacing between adjacent atomizing nozzles determined according to the spray width and atomization angle, for example, between 200 mm and 400 mm. The water pipe is connected to the outlet pipe via a rotary joint, ensuring that the outlet pipe and the water pipe remain connected throughout the rotation of the rotating frame.

[0100] After the booster is started, the liquid material in the storage tank is pressurized by the booster and enters the water pipe, and is then atomized and sprayed out through each atomizing nozzle.

[0101] Optionally, the rotating frame can rotate between an extended position and a retracted position. In the extended position, the rotating frame extends to the side of the support platform, with the water pipe positioned to the side of the support platform and the atomizing nozzle facing downwards or diagonally downwards, facilitating spraying of crops or the ground surface. In the retracted position, the rotating frame rotates to the top of the support platform, with the water pipe and atomizing nozzle resting on top of the support platform, the atomizing nozzle facing upwards to avoid collisions and to ensure that the normal operation of the granular spreading unit 300 and the powder spreading unit is not affected. The extension and retraction of the rotating frame can be accomplished manually or automatically by installing a drive motor on the top of the support platform, which drives the vertical shaft to rotate. In the non-spraying state, the rotating frame is retracted to the top of the support platform, and the overall lateral dimensions of the machine do not increase due to the spraying function, which is beneficial for passage on narrow field ridges and transportation during relocation.

[0102] With this setup, the storage tank provides storage space for the liquid amendment, and the booster pressurizes the liquid output from the storage tank, improving the atomization effect and range of the liquid sprayed from the spraying component 9. The booster outlet is directly connected to the spraying component 9, ensuring stable pressure transmission, so that the liquid material can be evenly covered on the surface of the soil to be improved, thereby improving the absorption efficiency and operation quality of the water-soluble amendment.

[0103] In some embodiments, the control unit includes a controller and an operation panel. The controller is a programmable logic controller or a microcontroller controller, and is mounted on the side or front of the support platform. The operation panel is electrically connected to the controller. The operation panel is provided with multiple operation buttons, knobs, and / or a display screen for inputting control commands and displaying operating status. The controller is electrically connected to the first drive motor, the second drive motor, the third drive motor, the electric push rod, and the booster motor, respectively. According to the control commands input on the operation panel, the controller turns on or off the corresponding components in the liquid spraying unit 200, the particle scattering unit 300, and the powder spreading unit, respectively.

[0104] Specifically, when the operation panel inputs the particle scattering mode command, the controller starts the second drive motor and electric push rod, and controls the first drive motor to move the moving platform 100 to realize particle material scattering.

[0105] When the powder spreading mode command is input on the control panel, the controller starts the third drive motor and controls the material distribution plate 8 to open, while simultaneously controlling the moving platform 100 to move, thus achieving low-dust powder spreading.

[0106] When a liquid spraying mode command is input on the control panel, the controller starts the booster and controls the movement of the mobile platform 100 to achieve liquid spraying. The controller can also activate multiple functional units simultaneously to achieve combined operations.

[0107] For example, the controller can simultaneously activate the granule spreading unit 300 and the liquid spraying unit 200, spraying liquid conditioner while spreading granular fertilizer, achieving multi-functional synchronous operation and improving work efficiency. An emergency stop button can also be installed on the control panel to quickly cut off the machine's power in emergencies, ensuring operational safety.

[0108] For example, the controller simultaneously drives the granule spreading unit 300, the powder spreading unit 400, and the liquid spraying unit 200 to simultaneously fill the storage bin 1 with granular material and powder material, with the powder material located below the granular material. The controller also controls the opening 221 in the middle of the feed baffle 22 to align with the feed inlet 211 in the middle of the feed cylinder 21, so that the granular material enters the first conveying auger 23 from the middle of the storage bin 1, while the powder material enters the distribution hopper 4 through the outlet at the bottom of the storage bin 1.

[0109] Optionally, the control unit also includes multiple position sensors and actuator drive circuits. Position sensors are respectively installed at the slots of the material distribution plate 8, the rotating shaft of the rotating frame, and the hinge of the electric push rod, to detect the insertion / removal position of the material distribution plate 8, the rotational position of the rotating frame, and the extension / retraction position of the electric push rod. Actuator drive circuits are electrically connected to each drive motor, electric push rod, and booster, respectively, to drive each actuator to move according to the control signals from the controller. The controller acquires the position signals of each actuator in real time through the position sensors and performs closed-loop control on them, thereby improving the action accuracy and response speed of each functional unit.

[0110] In some embodiments, a vibration anti-clogging device is also provided on the inner bottom side of the storage silo 1. The vibration anti-clogging device includes a vibration motor and a vibration plate. The vibration plate is attached to the outer wall of the conical converging section of the storage silo 1, and the vibration motor is fixedly connected to the vibration plate. When the powder spreading unit is working, the controller starts the vibration motor. The high-frequency vibration generated by the vibration motor is transmitted to the silo wall of the storage silo 1 through the vibration plate, continuously loosening the powder on the inner side of the silo wall and preventing the powder from arching or bridging at the outlet of the storage silo 1, ensuring that the powder is continuously and stably discharged from the outlet of the storage silo 1. The vibration frequency of the vibration motor can be adjusted according to the physical properties of the powder, for example, from 20 Hz to 100 Hz. When the powder has a high moisture content or small particle size, agglomeration and arching are common. The vibration anti-clogging device can effectively solve this problem.

[0111] In some embodiments, a flexible dust-blocking curtain is also provided at the outlet of the spreading shell 7. The flexible dust-blocking curtain consists of multiple rubber or plastic strips suspended side by side. The upper end of the flexible dust-blocking curtain is fixed to the edge of the outlet of the spreading shell 7, and the lower end of the flexible dust-blocking curtain is close to the ground. After the powder is discharged from the outlet of the spreading shell 7, it is further reduced to fly around by the shielding of the flexible dust-blocking curtain. When the flexible dust-blocking curtain comes into contact with crops or soil on the ground during the movement of the mobile platform 100, it can flexibly deform without damaging the crops.

[0112] In some embodiments, a liquid level sensor is installed inside the storage tank, and the liquid level sensor is electrically connected to the controller. Based on the detection signal from the liquid level sensor, the controller issues an alarm when the liquid level in the storage tank falls below a preset threshold, reminding the operator to replenish the liquid material. The alarm can be triggered via an audible and visual alarm on the control panel or by displaying information on the screen.

[0113] In some embodiments, a material level sensor is provided on the upper side wall of the storage silo 1. The material level sensor is an ultrasonic sensor or a photoelectric sensor used to detect the remaining material level in the storage silo 1. The material level sensor is electrically connected to the controller. When the remaining material level in the storage silo 1 is lower than a preset value, the controller displays a prompt message on the operation panel to remind the operator to replenish the material.

[0114] In some embodiments, an obstacle detection sensor is also provided at the front end of the mobile platform 100. The obstacle detection sensor is an ultrasonic sensor, millimeter-wave radar, or vision sensor, used to detect obstacles in the direction of travel of the mobile platform 100. The obstacle detection sensor is electrically connected to the controller. When the obstacle detection sensor detects an obstacle in front, the controller controls the mobile platform 100 to decelerate or stop to avoid collisions and improve operational safety.

[0115] The complete operation process of this soil salinity treatment auxiliary device is described below using a specific operational scenario. A saline-alkali plot, 8 meters wide and 60 meters long, requires acid-adjusting and alkali-reducing treatment. First, the operator loads sulfur powder into storage silo 1 through the feeding port and injects liquid soil conditioner into the liquid storage tank, then engages the limiting plate 13. Next, the operator pulls the distribution plate 8 outwards to the open position, connecting the outlet of storage silo 1 with the inlet of distribution hopper 4. Then, the operator selects the powder spreading mode and simultaneously selects the liquid spraying mode via the control panel, setting the moving platform 100's travel speed to 1.2 meters per second, the second conveying auger 5's speed to 80 revolutions per minute, and the booster's working pressure to 1.0 MPa. Based on these settings, the controller starts the third drive motor and the booster, and controls the first drive motor to move the moving platform 100 forward. During the process, sulfur powder enters the distribution hopper 4 from the outlet of storage silo 1. It is then diverted to both sides by the counter-rotating spiral blades of the first conveying section 51 and the second conveying section 52. The distribution roller 6 quantitatively scoops up the sulfur powder and discharges it into the spreading shell 7. The sulfur powder falls to the ground from the outlet of the spreading shell 7 in a low-altitude laminar flow state. Simultaneously, the liquid soil conditioner in the storage tank is pressurized by a booster and transported to the water pipe, where it is atomized and sprayed evenly onto the ground surface through various atomizing nozzles.

[0116] The mobile platform 100 moves from one end of the plot to the other, completing one acid-base adjustment and alkali-reduction operation. After the operation is completed, the operator turns off the powder spreading mode and liquid spraying mode through the control panel, inserts the material distribution plate 8 into the sealing position, and rotates the rotating frame to the storage position, thus completing the operation.

[0117] In another specific operational scenario, granular organic fertilizer needs to be applied to saline-alkali land. The operator loads the granular organic fertilizer into storage silo 1, confirms the distribution plate 8 is in the insertion and sealing position, selects the granular scattering mode via the control panel, sets the moving platform 100's travel speed to 1.5 meters per second, the second drive motor's speed to 1000 revolutions per minute, and the electric push rod's extension and retraction frequency to 0.4 times per second. The controller starts the second drive motor and the electric push rod, and the moving platform 100 moves forward. The granular organic fertilizer in storage silo 1 is conveyed upwards by the first conveying auger 23 through the feed cylinder 21 of the first conveying component 2, and enters the rotating box 31 through the discharge pipe. The throwing disc 32 rotates at high speed, throwing the granular organic fertilizer out of the open opening 221 of the rotating box 31. Simultaneously, the electric push rod drives the rotating box 31 to swing back and forth, evenly scattering the granular organic fertilizer within an area of ​​approximately ten meters. Compared to a scattering device with a fixed discharge port, this device significantly increases the scattering width, improves the uniformity of fertilizer application per unit area, reduces the number of times the field needs to be turned around, and improves operational efficiency.

[0118] In another specific operational scenario, plant protection spraying is required. The operator pours liquid fungicide into the storage tank and secures it to the limiting plate 13. The operator rotates the rotating frame 90 degrees outward from the top of the support platform, allowing the water pipes to extend horizontally and suspend above the crops. The operator selects the liquid spraying mode via the control panel, sets the moving platform 100's travel speed to 0.8 meters per second, and the booster's working pressure to 1.5 MPa. The controller starts the booster, the moving platform 100 moves, and the liquid fungicide, pressurized by the booster, is atomized and sprayed from each atomizer nozzle, evenly covering the crop leaves. After spraying, the operator closes the liquid spraying mode via the control panel and reverses the rotating frame to the top of the support platform, retracting the atomizer nozzles upwards to prevent damage during transportation or storage.

[0119] It is understood that the material types, operating parameters, and plot sizes in the above specific operational scenarios are merely illustrative examples. Those skilled in the art can adaptively adjust each parameter based on factors such as the actual soil salinity, material properties, and climatic conditions. For example, the spreading rate can be changed by adjusting the rotation speed of the second conveying auger 5 and the distribution roller 6; the spreading width can be changed by adjusting the extension stroke and frequency of the electric push rod; and the spraying rate can be changed by adjusting the working pressure of the booster and the traveling speed of the moving platform 100.

[0120] The driving methods used for the components in this disclosure are not limited to electric motor drives; hydraulic or pneumatic drives can also be employed. For example, in large agricultural machinery with a hydraulic power source, the first, second, and third drive motors and the electric push rod can be replaced by corresponding hydraulic motors and hydraulic cylinders, controlled by hydraulic valve groups, achieving the same functions and effects. This replacement of the driving method is a conventional technical choice in the field.

[0121] The control unit can adopt a distributed control architecture, including a central controller and multiple sub-controllers. The sub-controllers are located near the liquid spraying unit 200, the granule spreading unit 300, and the powder spreading unit, respectively, and are used for local control of their respective functional units. The central controller exchanges data with the sub-controllers via a communication bus to achieve coordinated control of the functional units. The communication bus can use a CAN bus or an RS485 bus to improve the reliability and real-time performance of data transmission.

[0122] The travel path of the mobile platform 100 can be pre-planned. The controller automatically controls the operation of the rotary drive motor and the first drive motor according to the pre-planned path, enabling the mobile platform 100 to travel automatically along the preset path and achieve unmanned operation. In automatic driving mode, the obstacle detection sensor detects obstacles in the direction of travel in real time and automatically avoids or stops when an obstacle is detected, ensuring operational safety.

[0123] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0124] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0125] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0126] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0127] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0128] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An auxiliary device for soil salinization control, characterized in that, include: Mobile platform; A liquid spraying unit is installed on the mobile platform and is used to spray liquid materials. A particle spraying unit is installed on the mobile platform, and a liquid spraying unit and the particle spraying unit are arranged at intervals on the mobile platform. The particle spraying unit is used to spray granular materials. A powder spreading unit is installed at the bottom of the mobile platform. The powder spreading unit is connected to the particle throwing unit, and the distance between the outlet of the powder spreading unit and the ground is adjustable. The powder spreading unit is used to spread powdery materials. A control unit, which is used to turn on or off at least one of the liquid spraying unit, the particle scattering unit, and the powder spreading unit.

2. The soil salinity control auxiliary device according to claim 1, characterized in that, The granular spreading unit includes a storage bin, a first conveying component, and a spreading component. The storage bin is hollow inside and used to store granular materials and / or powdery materials. The inlet end of the first conveying component extends into the storage bin, and the outlet end of the first conveying component is connected to the inlet end of the spreading component. The outlet end of the spreading component faces outward, and the spreading component is used to spread the granular materials onto the soil to be improved.

3. The soil salinity control auxiliary device according to claim 2, characterized in that, The dispensing component includes a rotating box, a dispensing disc, and a first driving component. The rotating box is installed on top of the storage silo and is rotatable relative to the storage silo. The dispensing disc is located at the bottom of the rotating box and is rotatable relative to the rotating box. The fixed end of the first driving component is connected to the storage silo, and the movable end of the first driving component is connected to the rotating box to drive the rotating box to rotate relative to the storage silo.

4. The soil salinity control auxiliary device according to claim 3, characterized in that, The first conveying component includes a feed cylinder, a feed baffle, and a first conveying auger. The feed cylinder extends vertically through the storage hopper and has multiple feed inlets. These feed inlets are arranged at intervals along the vertical direction and also at intervals around the circumference of the feed cylinder. The feed baffle is installed inside the feed cylinder, with its outer wall surface in contact with the inner wall surface of the feed cylinder. The feed baffle has multiple openings, which are arranged vertically at intervals and circumferentially around the feed cylinder. The intervals between the openings and the feed inlets on the circumference of the feed cylinder are staggered. The feed baffle is rotatable relative to the feed cylinder so that at least one opening communicates with at least one feed inlet, allowing material from the storage bin to enter the feed cylinder. The first conveying auger is vertically inserted into the feed cylinder, and the outlet of the first conveying auger is connected to the rotating box.

5. The soil salinity control auxiliary device according to claim 4, characterized in that, The first conveying auger is equipped with a driver at its top. The output shaft of the driver is connected to the first conveying auger. The output shaft of the driver is equipped with a drive wheel, and the rotating shaft of the throwing disc is equipped with a driven wheel. The drive wheel drives the driven wheel to rotate through a transmission component.

6. The soil salinity control auxiliary device according to any one of claims 2 to 5, characterized in that, The powder spreading unit includes a distributing hopper, a second conveying auger, a distributing roller, and a spreading shell. The storage silo has an outlet at its bottom. The inlet of the distributing hopper is connected to the outlet of the storage silo. The second conveying auger is installed inside the distributing hopper and is arranged horizontally. The distributing roller is located below the second conveying auger and is arranged parallel to it. The distributing roller has multiple distributing grooves, which are spaced apart circumferentially along the roller. The distributing roller is rotatable relative to the distributing hopper. The spreading shell is located below the distributing roller. The lower end of the spreading shell has an outlet, and the distance between the bottom of the spreading shell and the ground is adjustable.

7. The soil salinity control auxiliary device according to claim 6, characterized in that, The second conveying auger has a first conveying section and a second conveying section, which are symmetrically arranged along the length of the second conveying auger. The outlet of the storage bin is located directly above the intersection of the first and second conveying sections.

8. The soil salinity control auxiliary device according to claim 6, characterized in that, The spreading shell includes an interconnected shell and a folding section. The shell is connected to the distributing hopper, and the folding section is installed at the bottom of the shell. The folding section can be folded or unfolded in the vertical direction to adjust the spacing between the spreading shell and the ground.

9. The auxiliary device for soil salinization control according to claim 6, characterized in that, The powder spreading unit also includes a distribution plate, which is located at the inlet of the distribution hopper and the outlet of the storage bin. The distribution plate is used to connect or disconnect the connection between the storage bin and the distribution hopper.

10. The auxiliary device for soil salinization control according to claim 1, characterized in that, The liquid spraying unit includes a spraying component, a storage tank, and a booster. The storage tank and the booster are mounted on the mobile platform. The outlet of the storage tank is connected to the inlet of the booster, and the outlet of the booster is connected to the spraying component.

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