Saline-alkali soil improvement covering immersion cleaning device and improvement method

Abstract

The invention provides a saline-alkali soil improvement covering immersion cleaning device, and relates to the technical field of saline-alkali soil improvement, the saline-alkali soil improvement covering immersion cleaning device comprises a power assembly used for driving the device, a crushing assembly arranged on the power assembly and used for preliminarily crushing soil, and a covering assembly arranged on the power assembly and used for covering immersion cleaning soil; the spraying assembly is arranged on the covering assembly and used for soaking and cleaning soil. By arranging the power assembly, the crushing assembly and the covering assembly, caking soil is crushed, and after immersion cleaning, immersion cleaning soil is covered, so that water flow can rapidly permeate into the soil, the dip dyeing rate is increased, and the problem that in the prior art, a conventional covering immersion cleaning device only has a single drip irrigation function, and the drip irrigation efficiency is low is solved. Due to the fact that soil hardening of the saline-alkali soil is serious, the downward permeation speed of water flow is low in the initial stage of drip irrigation, and a large amount of time is consumed when the saline-alkali soil is improved in a drip irrigation mode.

Description

Technical Field

[0001] The present invention relates to the technical field of saline-alkali land improvement, and more specifically, to a saline-alkali land improvement covering and leaching device and an improvement method. Background Art

[0002] Saline-alkali soil is a general term for saline soil and alkaline soil. When the salinity and alkalinity in the soil are too high, the roots of plants cannot absorb nutrients and water in the soil. At the same time, it will also cause soil infertility, reduce the fertility in the soil, and easily lead to natural disasters such as drought or sandstorms. The treatment of saline-alkali land includes methods such as permeability improvement, leaching improvement, and sand mixing improvement.

[0003] However, the conventional covering and leaching device only has a single drip irrigation function. Due to the relatively serious soil compaction in saline-alkali land, at the initial stage of drip irrigation, the downward penetration speed of water flow is slow, and it will take a lot of time to improve saline-alkali land by the drip irrigation method.

[0004] Therefore, we make improvements in this regard and propose a saline-alkali land improvement covering and leaching device. Summary of the Invention

[0005] The purpose of the present invention is to provide a saline-alkali land improvement covering and leaching device and an improvement method. By setting various components, it solves the problem that the conventional covering and leaching device only has a single drip irrigation function. Due to the relatively serious soil compaction in saline-alkali land, at the initial stage of drip irrigation, the downward penetration speed of water flow is slow, and it will take a lot of time to improve saline-alkali land by the drip irrigation method.

[0006] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0007] A saline-alkali land improvement covering and leaching device includes a power component for driving the device, a crushing component arranged on the power component for initially crushing the soil, a covering component arranged on the power component for covering the leached soil, and a spraying component arranged on the covering component for leaching the soil;

[0008] The power component includes a carrier frame, a diesel engine is fixedly installed on the carrier frame, and an extension frame is movably clamped on one side of the carrier frame and is fixedly connected by bolts;

[0009] The crushing component includes a reduction gearbox fixedly installed on the carrier frame, and extension rods are respectively fixedly connected to the two output shafts of the reduction gearbox;

[0010] The covering component includes a connecting piece fixedly installed at one end of the extension frame, a clamping piece is fixedly connected to one side of the connecting piece, and expansion plates are respectively movably clamped on both sides of the inner walls of both sides of the clamping piece;

[0011] The spray assembly includes a mounting pipe fixedly connected to one side of the expansion plate. A cantilever is movably clamped in the middle of the mounting pipe and fixedly connected by bolts.

[0012] As a preferred technical solution of the present application, the power assembly further includes a seat plate fixedly installed at one end of the extension frame. A grip is fixedly connected to one side of the upper surface of the carrier frame. Belt pulleys are fixedly connected to the output end of the diesel engine and the input end of the reduction gearbox respectively. The same belt is lapped on the surfaces of the two belt pulleys. An inclined support is fixedly connected to one side of the lower surface of the carrier. A roller is movably clamped at the bottom end of the inclined support.

[0013] As a preferred technical solution of the present application, the crushing assembly further includes a tool rest fixedly connected to the extension rod. A crushing knife is movably clamped on the tool rest and fixed by bolts. The number of the crushing knives is several, and several crushing knives are evenly distributed on the tool rest. A power wheel is fixedly connected to one end of the extension rod.

[0014] As a preferred technical solution of the present application, the covering assembly further includes a clamping post fixedly connected to one side of the expansion plate. An adjusting frame is movably clamped on the clamping post. A limiting member is fixedly connected to the upper surface of one end of the positioning plate. Positioning plates are fixedly connected to the middle parts of the two inner side walls of the clamping member.

[0015] As a preferred technical solution of the present application, a lead screw is threadedly penetrated through the limiting member. A rotating handle is fixedly connected to one end of the lead screw. A blocking member is movably clamped at the other end of the lead screw. A sliding member is fixedly connected to the lower surface of the blocking member. The sliding member is slidably clamped on the positioning plate. The two sides of the sliding member are respectively clamped with the two adjusting frames and fixed by a rotating shaft.

[0016] As a preferred technical solution of the present application, a plow blade is fixedly installed on one side of the expansion plate by bolts. One end of the positioning plate is connected with an extension member. A moving wheel is fixedly connected to one side of the extension member.

[0017] As a preferred technical solution of the present application, the spray assembly further includes an assembly frame fixedly connected to the lower surfaces of the extension frame and the connecting member. Water tanks are fixedly connected to both sides of the upper surface of the assembly frame. A filling port is provided on the water tank. A micro water pump is arranged inside the water tank. A conduit is installed on the mounting pipe and the cantilever. One end of the conduit penetrates through and is connected to the water tank and is connected to the output end of the micro water pump.

[0018] As a preferred technical solution of the present application, one end of the cantilever is fixedly connected with a nozzle, the outer surface of the spraying is movably clamped with a dispersion cover, the water inlet of the nozzle is connected with the water outlet end of the conduit, the surface of the spraying is provided with a water spraying port, and the water spraying port is obliquely arranged and obliquely faces the inner arc surface of the dispersion cover.

[0019] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions;

[0020] An improvement method for a saline-alkali land improvement covering and leaching device, and the specific operation method is as follows:

[0021] S1. Equipment preparation: The staff injects water into the interior of the water tank through the injection port, and then the staff starts the micro water pump and the diesel engine;

[0022] The staff rotates the rotary handle, thereby driving the screw rod to rotate. At this time, one end of the screw rod drives the blocking member to gradually move away from the limiting member as the screw rod rotates. At this time, the slider moves synchronously with the movement of the blocking member, and then drives the adjusting frame to gradually level / tilt, thereby driving the expansion plate to gradually open / close, thereby completing the adjustment of the distance between the plow blades. Then the staff can start the covering and leaching improvement operation on the saline-alkali land;

[0023] S2. Preliminary soil breaking: The output end of the diesel engine starts and drives the pulley to rotate. Then, it drives another pulley to rotate through the belt, and then drives the reduction gearbox to rotate, thereby driving the extension rod to rotate. Then, it drives the tool rest to rotate through the extension rod, and then drives the crushing knife to rotate. At this time, the driving wheel rotates and drives the device to move forward. At this time, the crushing knife performs a crushing operation on the caked soil;

[0024] S3. Atomization impregnation: The output end of the micro water pump introduces the water flow into the interior of the conduit. Then, the liquid enters the nozzle through the conduit and is sprayed obliquely through the water spraying port of the nozzle, and is ejected onto the surface of the dispersion cover, thereby driving the dispersion cover to rotate. Then, it performs a dispersion and atomization operation on the water flow, and leaches the crushed caked soil with the atomized water flow;

[0025] S4. Soil crushing and covering: The moving wheels rotate synchronously with the drive of the driving wheel, and then drive the covering assembly to move forward. At this time, the plow blades cover the crushed caked soil, so that the leached soil is covered, thereby effectively overturning the saline-alkali land soil.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In the solution of the present application:

[0028] 1. By setting up a power component, a crushing component and a covering component, the crushing treatment of caked soil is realized, and after leaching, the leached soil is covered, so that water can quickly penetrate the soil, thereby improving the leaching rate. This solves the problem that the conventional covering and leaching device in the prior art only has a single drip irrigation function. Due to the serious soil compaction in saline-alkali land, at the initial stage of drip irrigation, the downward penetration speed of water flow is slow, and it takes a lot of time to improve saline-alkali land by the way of drip irrigation.

[0029] 2. By setting up a spray component, the rapid atomization treatment of water flow is realized, so as to more quickly leach the crushed soil, and thus greatly reduce the time required for traditional drip irrigation and infiltration leaching. This solves the problem that in the prior art, at the initial stage of drip irrigation, the downward penetration speed of water flow is slow, and it takes a lot of time to improve saline-alkali land by the way of drip irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 One of the overall structural schematic diagrams of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0031] Figure 2 Two of the overall structural schematic diagrams of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0032] Figure 3 Three of the overall structural schematic diagrams of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0033] Figure 4 The structural schematic diagram of the power component and the crushing component of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0034] Figure 5 The structural schematic diagram of the crushing component of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0035] Figure 6 The structural schematic diagram of the covering component and the spray component of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0036] Figure 7 The structural schematic diagram of the spray component of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application;

[0037] Figure 8 The structural schematic diagram of the covering component of a saline-alkali land improvement covering and leaching device and an improvement method provided by this application.

[0038] Labels in the figure:

[0039] 1. Power component; 11. Carrier frame; 12. Diesel engine; 13. Extension frame; 14. Grip; 15. Pulley; 16. Belt; 17. Inclined support

[0040] 2. Crushing component; 21. Reduction gearbox; 22. Extension rod; 23. Tool rest; 24. Crushing knife; 25. Driving wheel

[0041] 3. Covering component; 31. Connecting piece; 32. Clamping piece; 33. Expansion plate; 34. Positioning plate; 35. Clamping post; 36. Limiting piece; 37. Lead screw; 38. Blocking piece; 39. Sliding piece; 310. Ploughshare; 311. Expansion piece; 312. Moving wheel; 313. Adjusting frame

[0042] 4. Spraying component; 41. Installation pipe; 42. Cantilever; 43. Assembly rack; 44. Water tank; 46. Conduit; 47. Nozzle; 48. Dispersion cover Detailed implementation mode

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention.

[0044] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed present invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0046] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0048] Please refer to Figures 1 to 8 , the present invention provides a technical solution: a saline-alkali land improvement covering and leaching device,

[0049] Example 1:

[0050] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, this embodiment proposes a saline-alkali land improvement covering and leaching device, including a power component 1 for driving the device, a crushing component 2 provided on the power component 1 for initially crushing the soil, a covering component 3 provided on the power component 1 for covering the leached soil, and a spray component 4 provided on the covering component 3 for leaching the soil.

[0051] Example 2:

[0052] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, as a preferred embodiment, on the basis of the above method, further, the power component 1 includes a carrier frame 11, a diesel engine 12 is fixedly installed on the carrier frame 1, an extension frame 13 is movably clamped on one side of the carrier frame 1 and is fixedly connected by bolts. The power component 1 further includes a seat plate fixedly installed at one end of the extension frame 13. One side of the upper surface of the carrier frame 1 is fixedly connected with a handle 14. The output end of the diesel engine 11 and the input end of the reduction gearbox 21 are both fixedly connected with a pulley 15, and the same belt 16 is lapped on the surfaces of the two pulleys 15. One side of the lower surface of the carrier 11 is fixedly connected with an inclined support 17, and the bottom end of the inclined support 17 is movably clamped with a roller.

[0053] Example 3:

[0054] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, as a preferred embodiment, on the basis of the above method, further, the crushing assembly 2 includes a reduction gearbox 21 fixedly installed on the carrier 1. The two output shafts of the reduction gearbox 21 are respectively fixedly connected with extension rods 22. The crushing assembly 2 further includes a tool rest 23 fixedly connected to the extension rods 22. A crushing knife 24 is movably clamped on the tool rest 23 and fixed by bolts. The number of the crushing knives 24 is several, and the several crushing knives 24 are evenly distributed on the tool rest 23. One end of the extension rod 22 is fixedly connected with a driving wheel 25.

[0055] Exemplarily, the output end of the diesel engine 12 is started, and the pulley 15 is driven to rotate. Subsequently, another pulley 15 is driven to rotate through the belt 16, thereby driving the reduction gearbox 21 to rotate, thus driving the extension rod 22 to rotate. Then, the tool rest 23 is driven to rotate through the extension rod 22, and then the crushing knife 24 is driven to rotate. At this time, the driving wheel 25 rotates and drives the device to move forward. At this time, the crushing knife 24 performs a crushing operation on the caked soil.

[0056] Embodiment 4:

[0057] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, further, the covering assembly 3 includes a connecting piece 31 fixedly installed at one end of the extension frame 13. One side of the connecting piece 31 is fixedly connected with a clamping piece 32. Expansion plates 33 are respectively movably clamped on both sides of the two inner side walls of the clamping piece 32. The covering assembly 3 further includes a clamping post 35 fixedly connected to one side of the expansion plate 33. An adjusting frame 313 is movably clamped on the clamping post 35. A limiting piece 36 is fixedly connected to the upper surface of one end of the positioning plate 34. A positioning plate 34 is fixedly connected to the middle of the two inner side walls of the clamping piece 32. A lead screw 37 is threadedly penetrated through the limiting piece 36. One end of the lead screw 37 is fixedly connected with a rotating handle. The other end of the lead screw 37 is movably clamped with a blocking piece 38. A sliding piece 39 is fixedly connected to the lower surface of the blocking piece 38. The sliding piece 39 is slidably clamped on the positioning plate 34. Both sides of the sliding piece 39 are respectively clamped with the two adjusting frames 313 and fixed by a rotating shaft. A plow knife 310 is fixedly installed on one side of the expansion plate 33 by bolts. One end of the positioning plate 34 is connected with an extension piece 311. A moving wheel 312 is fixedly connected to one side of the extension piece 311.

[0058] Exemplarily, the staff rotates the knob, thereby driving the lead screw 37 to rotate. At this time, one end of the lead screw 37 drives the barrier member 38 to gradually move away from the limiting member 36 as the lead screw 37 rotates. At this time, the slider 39 moves synchronously with the movement of the barrier member 38, and then drives the adjusting frame 313 to gradually level / tilt, thereby driving the expansion plate 33 to gradually open / close, so as to complete the adjustment of the distance between the plow blades 310. The moving wheels 312 rotate synchronously with the drive of the power wheels 25, and then drive the covering assembly 3 to move forward. At this time, the plow blades 310 cover the broken caked soil, so that the leached soil is covered, thereby effectively overturning the saline-alkali soil.

[0059] Example 5:

[0060] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, as a preferred implementation manner, on the basis of the above manner, further, the spray assembly 4 includes a mounting pipe 41 fixedly connected to one side of the expansion plate 33. The middle of the mounting pipe 41 is movably clamped with a cantilever 42 and is fixedly connected by bolts. The spray assembly 4 further includes a mounting frame 43 fixedly connected to the lower surfaces of the extension frame 13 and the connecting member 31. Both sides of the upper surface of the mounting frame 43 are fixedly connected with water tanks 44. The water tanks 44 are provided with injection ports. A micro water pump is provided inside the water tank 45. A conduit 46 is installed on the mounting pipe 41 and the cantilever 42. One end of the conduit 46 penetrates and is connected to the water tank 45 and is connected to the output end of the micro water pump. One end of the cantilever 42 is fixedly connected with a nozzle 47. A dispersion cover 48 is movably clamped on the outer surface of the spray 47. The water inlet of the nozzle 47 is connected to the water outlet end of the conduit 46. The surface of the spray 47 is provided with water spray openings, and the water spray openings are obliquely arranged and obliquely face the inner arc surface of the dispersion cover 48.

[0061] Exemplarily, the output end of the micro water pump introduces the water flow into the inside of the conduit 46. Subsequently, the liquid enters the nozzle 47 through the conduit 46 and is sprayed obliquely through the water spray openings of the nozzle 47, and impacts on the surface of the dispersion cover 48, thereby driving the dispersion cover 48 to rotate, and then performing a dispersion and atomization operation on the water flow, and leaching the broken caked soil with the atomized water flow.

[0062] Example 6:

[0063] The following further introduces the solutions in the above embodiments in combination with specific working modes, as detailed in the following description:

[0064] Specifically, when this saline-alkali soil improvement covering and leaching device is working / being used:

[0065] The staff inject water into the interior of the water tank 44 through the injection port. Subsequently, the staff start the micro water pump and the diesel engine 12. The staff rotate the knob, thereby driving the screw rod 37 to rotate. At this time, one end of the screw rod 37 drives the blocking member 38 to gradually move away from the limiting member 36 as the screw rod 37 rotates. At this time, the slider 39 moves synchronously with the movement of the blocking member 38, and then drives the adjusting frame 313 to gradually level / tilt, thereby driving the expansion plate 33 to gradually open / close, thus completing the adjustment of the distance between the plow blades 310. Subsequently, the staff can start the operation of covering and leaching the saline-alkali land for improvement. The output end of the diesel engine 12 starts and drives the pulley 15 to rotate. Subsequently, the other pulley 15 is driven to rotate through the belt 16, and then the reduction gearbox 21 is driven to rotate, thereby driving the extension rod 22 to rotate. Then, the cutter holder 23 is driven to rotate through the extension rod 22, and then the crushing knife 24 is driven to rotate. At this time, the driving wheel 25 rotates and drives the device to move forward. At this time, the crushing knife 24 performs a crushing operation on the caked soil. The output end of the micro water pump introduces the water flow into the interior of the conduit 46. Subsequently, the liquid enters the nozzle 47 through the conduit 46 and is obliquely ejected through the water spray opening of the nozzle 47 and jets on the surface of the dispersion cover 48, thereby driving the dispersion cover 48 to rotate, and then performing a dispersion and atomization operation on the water flow, and leaching the crushed caked soil with the atomized water flow. The moving wheel 312 rotates synchronously with the drive of the driving wheel 25, and then drives the covering assembly 3 to move forward. At this time, the plow blades 310 cover the crushed caked soil, so that the leached soil is covered, thereby effectively overturning the saline-alkali land soil.

[0066] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A saline-alkali land improvement covering and leaching device, characterized in that: It comprises a power assembly (1) for driving a device, a crushing assembly (2) arranged on the power assembly (1) for initially crushing soil, a covering assembly (3) arranged on the power assembly (1) for covering the washed soil, and a spraying assembly (4) arranged on the covering assembly (3) for washing the soil; The power assembly (1) comprises a carrier frame (11), a diesel engine (12) is fixedly mounted on the carrier frame (1), and an extension frame (13) is movably connected to one side of the carrier frame (1) and fixedly connected by bolts; The crushing assembly (2) comprises a reduction gear box (21) fixedly mounted on the support frame (1), and two output shafts of the reduction gear box (21) are respectively fixedly connected to extension rods (22); The covering assembly (3) comprises a connecting piece (31) fixedly mounted on one end of the extension frame (13); a clamping piece (32) is fixedly connected to one side of the connecting piece (31); and expansion plates (33) are movably clamped on both sides of the two inner side walls of the clamping piece (32); The spray assembly (4) comprises a mounting tube (41) fixedly connected to one side of the expansion plate (33); a cantilever (42) is movably clamped in the middle of the mounting tube (41) and fixedly connected by bolts.

2. The saline-alkali land improvement covering and leaching device according to claim 1 is characterized in that: The power assembly (1) also includes a seat plate fixedly mounted on one end of the extension frame (13); a handle (14) is fixedly connected to one side of the upper surface of the carrier frame (1); the output end of the diesel engine (11) and the input end of the reduction gear box (21) are both fixedly connected to pulleys (15); the surfaces of the two pulleys (15) are overlapped with the same belt (16); an oblique support (17) is fixedly connected to one side of the lower surface of the carrier (11); and a roller is movably engaged at the bottom end of the oblique support (17).

3. The saline-alkali land improvement covering and leaching device according to claim 1 is characterized in that: The crushing assembly (2) further comprises a knife frame (23) fixedly connected to the extension rod (22); a crushing knife (24) is movably connected to the knife frame (23) and fixed by bolts; the number of the crushing knives (24) is several, and the several crushing knives (24) are evenly distributed on the knife frame (23); one end of the extension rod (22) is fixedly connected to a power wheel (25).

4. The saline-alkali land improvement covering and leaching device according to claim 1, characterized in that: The covering assembly (3) further comprises a clamping column (35) fixedly connected to one side of the expansion plate (33), an adjusting frame (313) being movably clamped on the clamping column (35), a limiting member (36) being fixedly connected to the upper surface of one end of the positioning plate (34), and a positioning plate (34) being fixedly connected to the middle of the two inner side walls of the clamping member (32).

5. The saline-alkali land improvement covering and leaching device according to claim 4 is characterized in that: A screw rod (37) is threadedly connected to the limiting member (36), one end of the screw rod (37) is fixedly connected to a rotary handle, the other end of the screw rod (37) is movably connected to a blocking member (38), the lower surface of the blocking member (38) is fixedly connected to a sliding member (39), the sliding member (39) is slidably connected to the positioning plate (34), and the two sides of the sliding member (39) are respectively connected to the two adjustment frames (313) and fixed by a rotating shaft.

6. The saline-alkali land improvement covering and leaching device according to claim 5 is characterized in that: A plow (310) is fixedly mounted on one side of the expansion plate (33) by means of bolts, an extension piece (311) is connected to one end of the positioning plate (34), and a moving wheel (312) is fixedly connected to one side of the extension piece (311).

7. The saline-alkali land improvement covering and leaching device according to claim 1 is characterized in that: The spray assembly (4) further comprises an assembly frame (43) fixedly connected to the lower surface of the extension frame (13) and the connecting member (31); water tanks (44) are fixedly connected to both sides of the upper surface of the assembly frame (43); an injection port is provided on the water tank (44); a micro water pump is provided inside the water tank (45); a conduit (46) is installed on the mounting pipe (41) and the cantilever (42); one end of the conduit (46) penetrates and is connected to the water tank (45) and is connected to an output end of the micro water pump.

8. The saline-alkali land improvement covering and leaching device according to claim 1 is characterized in that: One end of the cantilever (42) is fixedly connected to a nozzle (47), the outer surface of the spray (47) is movably connected to a dispersion cover (48), the water inlet of the nozzle (47) is connected to the water outlet of the conduit (46), and the surface of the spray (47) is provided with a water spray outlet, which is obliquely arranged and obliquely faces the inner arc surface of the dispersion cover (48).

9. A method for improving the saline-alkali land improvement covering and leaching device according to any one of claims 1 to 9, wherein the specific operation method is as follows: Features: S1. Equipment preparation: The staff injects water into the water tank (44) through the injection port, and then starts the micro water pump and the diesel engine (12); The staff rotates the handle, thereby driving the screw rod (37) to rotate. At this time, one end of the screw rod (37) drives the blocking member (38) to gradually move away from the limit member (36) as the screw rod (37) rotates. At this time, the slider (39) moves synchronously with the movement of the blocking member (38), thereby driving the adjustment frame (313) to gradually become horizontal / inclined, thereby driving the expansion plate (33) to gradually open / close, thereby completing the spacing conditions between the plow blades (310). Then, the staff can start covering, leaching and improving the saline-alkali land; S2, initial soil breaking: the output end of the diesel engine (12) is started, and the pulley (15) is rotated, and then the belt (16) drives another pulley (15) to rotate, and then drives the reduction gear box (21) to rotate, thereby driving the extension rod (22) to rotate, and then drives the tool holder (23) to rotate through the extension rod (22), and then drives the crushing knife (24) to rotate. At this time, the power wheel (25) rotates and drives the device forward. At this time, the crushing knife (24) performs a crushing operation on the agglomerated soil; S3, atomization and immersion: the output end of the micro water pump guides the water flow into the interior of the conduit (46), and then the liquid enters the nozzle (47) through the conduit (46), and is obliquely sprayed out through the water spray port of the nozzle (47), and is sprayed on the surface of the dispersion cover (48), thereby driving the dispersion cover (48) to rotate, and then the water flow is dispersed and atomized, and the agglomerated soil that has been broken is leached by the atomized water flow; S4. Crushed soil and covered: The moving wheel (312) rotates synchronously with the driving of the power wheel (25), thereby driving the covering assembly (3) forward. At this time, the plow blade (310) covers the crushed agglomerated soil, so that the leached soil is covered, thereby effectively turning over the saline-alkali soil.

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