CN115486217A

CN115486217A - Restoration method and device for comprehensive farmland remediation

Info

Publication number: CN115486217A
Application number: CN202211050434.3A
Authority: CN
Inventors: 黄建灿; 黄巧新; 黄永庆
Original assignee: Xiamen Haicheng Construction Engineering Co ltd
Current assignee: Xiamen Haicheng Construction Engineering Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-20
Anticipated expiration: 2042-08-31
Also published as: CN115486217B

Abstract

The invention relates to agricultural construction equipment, in particular to a restoration method and equipment for comprehensive farmland remediation, which comprises a soil humidity adjusting device, a frame, a soil shoveling device, a spiral soil discharging device and an even soil returning device, wherein the soil humidity adjusting device is used for transversely cutting soil in advance through a pre-cutting vertical plate, and is used for adjusting the humidity of a contact soil layer through a water injection hole at the side part of the vertical plate, so that the soil is easy to shovel; meanwhile, the soil moving process is continuously carried out, and the soil layer at the corresponding position can be directly replaced without intermission through an external transfer vehicle.

Description

Restoration method and device for comprehensive farmland remediation

Technical Field

The invention relates to the technical field of agricultural restoration construction, in particular to a restoration method and equipment for comprehensive farmland improvement.

Background

The high-standard farmland refers to a farmland which is formed by land improvement and construction, has concentrated connection, facility matching, high and stable yield, good ecology and strong disaster resistance and is suitable for modern agricultural production and operation modes. The standard to be reached by high-standard farmland construction generally comprises the steps of field forming, soil forming, canal formation, road communication, soil fertilization, no pollution and high yield; the thickness of the plough layer is more than 0.25 m, the organic matter content of the plough layer is increased by more than 0.5%, the irrigation guarantee rate is more than 90%, and the protected farmland area is more than 90%. The method is mainly divided into the following three parts. The first is field infrastructure engineering. The method mainly comprises the construction of a field network, a canal network, a road network, a power grid and the like, and the improvement of the disaster resistance and reduction capability of the farmland, the irrigation and drainage capability of the farmland and the operation capability of agricultural machinery. And the other is the land engineering. The land leveling, soil improvement and soil fertility improvement construction are carried out, straw returning, green manure planting, organic fertilizer additional application and the like are carried out, and the basic soil fertility and the agricultural production capacity of the farmland are improved. And thirdly, scientific and technological support engineering. The integration comprises water and fertilizer integrated intelligent irrigation and fertilization, growth environment intelligent monitoring and production management informatization agriculture internet of things technology. Therefore, the technology application capability of modern agriculture is improved by using a new technology and a new mode. After the project is implemented, high-standard farmland reformation can be completed, the optimization and adjustment of the local agricultural industry structure is promoted, the agricultural high-quality development is promoted, the comprehensive development of rural economic society is further promoted, and the income increase of local farmers and the living standard improvement of the farmers are promoted. Therefore, a remediation method and equipment capable of rapidly realizing comprehensive farmland remediation by changing soil and directly returning soil to poor soil are urgently needed.

The invention patent of China (CN 113349023A) discloses a farmland canal irrigation system and a construction method, and relates to the field of irrigation systems, wherein the canal irrigation system comprises a canal channel provided with a plurality of irrigation openings, a plurality of plugging plates connected to the canal channel in a sliding manner and used for plugging the irrigation openings, a plurality of flow guide plates fixedly arranged on the canal channel, a control box fixedly arranged below the flow guide plates, lifting mechanisms arranged on two sides of the control box and the plugging plates and used for controlling the plugging plates to lift up and down, and an overhaul assembly arranged on one side of the control box and used for conveniently opening the control box to maintain the lifting mechanisms; it is a plurality of watering mouth and a plurality of shutoff board one-to-one, it is a plurality of shutoff board and a plurality of guide plate one-to-one, the control box is inside hollow casing. Therefore, the invention is mainly used for irrigating farmlands so as to reduce the labor intensity of workers.

The Chinese utility model patent (CN 208987254U) discloses a soil changing device for solving continuous cropping obstacles of a greenhouse, which comprises a soil storage box and a bottom plate, wherein the bottom of the soil storage box is provided with traveling wheels, and both sides of the soil storage box are provided with pull rings; the soil storage box is characterized in that a support column is arranged on the bottom plate and movably connected with the bedplate, two ends of the bedplate are sleeved with a side plate I, two side plates I are sleeved with a side plate II, and the soil storage box can walk on the bedplate, the two side plates I and the two side plates II; the lower ends of the two side plates II are connected with telescopic hydraulic cylinders, and traveling wheels are arranged below the hydraulic cylinders; the upper ends of the two side plates II are provided with winches, and the tail ends of the ropes of the winches are provided with hooks which can be connected with pull rings at two ends of the soil storage box. The device is used for reducing the labor intensity of soil replacement of the greenhouse, improving the soil replacement efficiency and reducing the labor cost.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a repairing method and equipment for comprehensive farmland improvement.

The invention discloses remediation equipment for comprehensive farmland remediation, which comprises a soil humidity adjusting device, a rack body, a soil shoveling device, a spiral soil discharging device, a transfer device and an even soil returning device, wherein the rack body comprises a supporting main beam, the soil humidity adjusting device is fixedly installed at the front part of the supporting main beam and used for vertically cutting and dispersing soil along a traveling direction in advance, the front end of the supporting main beam is connected with a front supporting beam, a crawler supporting wheel system is arranged at the bottom of the front supporting beam, the soil shoveling device and the spiral soil discharging device are fixedly installed at the middle part of the supporting main beam in an embedded mode, the soil shoveling device is used for directly shoveling soil processed by the soil humidity adjusting device, the spiral soil discharging device is used for bearing and lifting soil extruded from the tail end of the soil shoveling device, the transfer device is installed at the upper part of the supporting main beam and comprises a horizontal conveyor belt, an even soil discharging inclined hopper and an outer supporting side conveyor belt, the horizontal conveyor belt is used for bearing and discharging soil from the tail end of the spiral soil discharging device, the inclined hopper is fixedly installed at the tail end of the horizontal conveyor belt, the inclined hopper and the outer side conveyor belt is used for driving the even soil returning device to the bottom of the outer side of the outer soil discharging conveyor belt, and the even soil returning device is arranged below the rear side of the outer side conveyor belt and used for driving mechanism for driving the outer side of the even soil returning device.

Further, soil moisture adjusting device is including precutting riser and counter weight water tank, precutting riser includes longitudinal arrangement and is in a plurality of parallel plate bodies and the corresponding end shovel board that is equipped with in each plate body bottom of supporting the girder bottom, precutting riser rear portion is connected with the support swash plate, the embedded cartridge in the face outside of precutting riser has water injection device, water injection device supplies water through the counter weight water tank, water injection device includes the water injection billet, the water injection billet cartridge is in the face outside of precutting riser, and the water injection billet outside is equipped with oblique apopore.

Further, the device of shoveling soil includes the layer cutting board, the equidistant vertical range of layer cutting board, form the layer between the layer cutting board and cut the passageway, the upper portion that the passageway was cut on the layer and the lower part welding that is located corresponding layer cutting board has the branch native pressure head, divide native pressure head cross-section to be triangle-shaped, divide native pressure head rear side to extend and be equipped with the wheel carrier, vertically install the roller frame body on the wheel carrier, every layer cutting board end-to-end connection has the curved board of defeated soil, and the curved board cross-section of defeated soil is the S-shaped, the end and the spiral of the curved board of defeated soil device lateral part intercommunication realize out soil.

Further, install the pine on the roller support body and dial the needle post, the roller support body is vertical column segmentation stake body, every segmentation cross-section of roller support body is four-bar ring, the needle post is dialled to the pine all is obtuse angle formula welding at four connecting rod ends, the end of the needle post is dialled to the pine is equipped with flat needle mouth.

Further, the spiral soil discharging device comprises a motor driving mechanism, a conveying cylinder and a spiral conveying roller, the spiral conveying roller is rotatably installed at the center of the conveying cylinder and is driven by the motor driving mechanism, the conveying cylinder is arranged obliquely in the front direction, a soil inlet is formed in the wall of the front side cylinder of the conveying cylinder, and the soil inlet is used for being in butt joint with the soil shoveling device.

Further, it is equipped with back cantilever beam to support the girder rear end, evenly return native device and establish on back cantilever beam, evenly return native device and include soil inlet, swing strip subassembly, swing mounting bracket, reciprocating drive mechanism and unearthing mouth, soil inlet and unearthing mouth all are hourglass hopper-shaped, unearthing mouthful embedding is in back cantilever beam below, soil inlet and unearthing mouth pass through swing mounting bracket intercommunication, swing mounting bracket bottom is equipped with the orifice plate, the orifice plate front side is equipped with the accepting hourglass groove, swing strip subassembly is installed on the orifice plate, swing strip subassembly is the flat four-bar deformation telescopic machanism, and swing strip subassembly center upper portion is connected with the board that connects, reciprocating drive mechanism is connected to swing strip subassembly drive end, and reciprocating drive mechanism includes two-way lead screw, two-way lead screw both ends are through linear guide device slidable mounting on the cantilever beam of back, suit driving nut on the two-way lead screw, driving nut is through the reciprocal linear motion of continuous rotary drive two-way lead screw.

A restoration method for comprehensively renovating farmland by using the equipment comprises the following steps of S1, carrying out a soil internal humidification loosening process on soil to be shoveled in advance through a soil humidity adjusting device; s2, carrying out a seamless soil shoveling and transferring process on the soil to be shoveled after the treatment of the step S1 through a shoveling device, a spiral soil discharging device and a transferring device; and S3, performing a direct soil returning process by adopting an even soil returning device.

Further, the step S2 includes a process of directly performing following soil receiving and removing on the contaminated soil output by the transfer device by using an external muck truck.

Further, the step S3 includes a following soil feeding process of new soil directly carried out on the soil inlet by adopting an external muck truck. .

Compared with the prior art, the invention has the following advantages:

the invention achieves the purpose of continuous action by the skillfully designed soil shoveling device and the cooperation of the front pretreatment device, and reduces the resistance in the soil shoveling process; meanwhile, the soil moving process is continuously carried out, and the soil layer at the corresponding position can be directly replaced without intermission by an external transfer vehicle, so that the aim of efficiently replacing soil is fulfilled; and the even device that returns soil of this application make full use of self motion characteristics, and the soil process that looses suits with the process of shovel soil, has improved the synchronism.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the drive configuration of the wobble bar assembly 62 of the present invention;

FIG. 3 is an enlarged view of a portion of the invention at position A in FIG. 1;

1-soil humidity adjusting device, 11-pre-cutting vertical plate, 111-water injection device, 112-bottom shovel plate, 113-supporting inclined plate, 12-counterweight water tank, 2-frame body, 21-front supporting beam, 211-crawler supporting wheel train, 22-supporting main beam, 221-rear wheel, 23-rear cantilever beam, 3-shoveling device, 31-layer cutting plate, 311-soil conveying curved plate, 32-layer cutting channel, 321-soil separating pressure head, 321 a-wheel frame, 322-roller frame body, 323-soil loosening and shifting needle column, 4-spiral soil discharging device, 41-motor driving mechanism, 42-conveying cylinder body, 43-spiral conveying roller, 5-transfer device, 51-horizontal conveying belt, 52-soil homogenizing inclined bucket, 53-outer side conveying belt, 6-uniform soil returning device, 61-soil inlet, 62-swinging strip component, 621-soil receiving plate, 63-swinging, mounting frame-pore plate, 631 a-soil collecting leakage groove, 64-reciprocating driving mechanism, 641-driving nut, 642-screw rod, 65-bidirectional soil discharging port and bidirectional soil discharging port.

Detailed Description

As shown in fig. 1-3, the invention discloses a remediation device for comprehensive farmland improvement, which comprises a soil humidity adjusting device 1, a frame body 2, a soil shoveling device 3, a spiral soil discharging device 4, a transfer device 5 and a uniform soil returning device 6, wherein the frame body 2 comprises a supporting main beam 22, the soil humidity adjusting device 1 is fixedly installed at the front part of the supporting main beam 22, the soil humidity adjusting device 1 is used for vertically cutting and dispersing soil along a traveling direction in advance, specifically, the soil humidity adjusting device 1 comprises a pre-cutting vertical plate 11 and a counterweight water tank 12, the pre-cutting vertical plate 11 comprises a plurality of parallel plate bodies longitudinally arranged at the bottom of the supporting main beam 22, a bottom shoveling plate 112 is correspondingly arranged at the bottom of each plate body, the rear part of the pre-cutting vertical plate 11 is connected with a supporting inclined plate 113, a water injection device 111 is inserted and installed at the outer side of the surface of the pre-cutting vertical plate 11, the water injection device 111 supplies water through the counterweight water tank 12, the water injection device 111 comprises a water injection steel bar, the water injection steel bar is arranged at the outer side of the surface of the pre-cutting vertical plate 11, the supporting device is connected with a front end of the supporting main beam 22, the supporting main beam 21, the supporting device is connected with a supporting device 21, the supporting device, the supporting main beam 21 is used for supporting device for supporting main beam 3, and the supporting device for supporting main beam for directly extruding the soil moisture adjusting device for supporting main beam 3, and for supporting device for supporting main beam for supporting device for supporting main beam 3, and for supporting device for supporting main beam for supporting device for supporting the soil moisture adjusting device for supporting the soil, the soil moisture for directly extruding, and for extruding, the soil moisture adjusting device for extruding, the soil moisture for supporting device for extruding, the soil moisture adjusting device for supporting device 22, the upper soil moisture for the soil moisture adjusting device for the soil.

Specifically, above-mentioned transfer device 5 includes horizontal transfer belt 51, even native oblique fill 52 and outer side conveyer belt 53, horizontal transfer belt 51 is used for accepting the terminal unearthing of spiral unearthing device 4, even native oblique fill 52 fixed mounting is at horizontal transfer belt 51 end, even native oblique fill 52 is including the oblique sieve board in bottom that is used for evenly scattering soil, even native oblique fill 52 below is established to outer side conveyer belt 53 bottom, outer side conveyer belt 53 top is used for the outside soil of seeing off, the rear portion of supporting girder 22 installs rear wheel 221, rear wheel 221 is equipped with and is used for the drive even drive mechanism who goes back native device 6. The rear end of the support main beam 22 is provided with a rear cantilever beam 23, the uniform soil returning device 6 is arranged on the rear cantilever beam 23, the uniform soil returning device 6 comprises a soil inlet 61, a swinging strip assembly 62, a swinging mounting frame 63, a reciprocating driving mechanism 64 and a soil outlet 65, the soil inlet 61 and the soil outlet 65 are funnel-shaped, the soil outlet 65 is embedded below the rear cantilever beam 23, the soil inlet 61 and the soil outlet 65 are communicated through the swinging mounting frame 63, the bottom of the swinging mounting frame 63 is provided with a pore plate 631, the front side of the pore plate 631 is provided with a soil collecting leakage groove 631a, the swinging strip assembly 62 is arranged on the pore plate 631, the swinging strip assembly 62 is a horizontal four-rod deformation telescopic mechanism, the upper part of the center of the swinging strip assembly 62 is connected with a soil receiving plate 621, the driving end of the swinging strip assembly 62 is connected with the reciprocating driving mechanism 64, the reciprocating driving mechanism 64 comprises a bidirectional lead screw 642, two ends of the bidirectional lead screw 642 are slidably arranged on the rear cantilever beam 23 through a linear guide rail device, a driving nut 641 is sleeved on the bidirectional lead screw 642, and the bidirectional lead screw nut 641 is driven by a continuous linear reciprocating motion.

The scraper device 3 includes layer cutting plate 31, the equidistant vertical range of layer cutting plate 31, it cuts passageway 32 to form the layer between the layer cutting plate 31, the upper portion that the passageway 32 was cut on the layer and the lower part welding that is located corresponding layer cutting plate 31 has branch soil pressure head 321, divide soil pressure head 321 cross-section to be triangle-shaped, divide soil pressure head 321 rear side to extend and be equipped with wheel carrier 321a, vertically install roller frame body 322 on the wheel carrier 321a, every layer cutting plate 31 end-to-end connection has defeated native bent plate 311, and defeated native bent plate 311 cross-section is the S-shaped, the end and the 4 lateral parts intercommunication realization unearthing of spiral unearthing device of defeated native bent plate 311 of defeated soil are unearthed, install the pine on the roller frame body 322 and dial needle post 323, roller frame body 322 is vertical column segmentation stake body, every segmentation cross-section of roller frame body 322 is four-bar rings, the needle post 323 is all welded at four connecting rod ends in obtuse angle formula, the end of dialling needle post is equipped with the plat needle mouth. The spiral soil discharging device 4 comprises a motor driving mechanism 41, a conveying cylinder 42 and a spiral conveying roller 43, the spiral conveying roller 43 is rotatably installed at the center of the conveying cylinder 42, the spiral conveying roller 43 is driven by the motor driving mechanism 41, the conveying cylinder 42 is arranged in a forward inclined mode, a soil inlet 61 is formed in the wall of the front side of the conveying cylinder 42, and the soil inlet 61 is used for being in butt joint with the soil shoveling device 3.

The invention also provides a restoration method for comprehensively remedying the farmland by using the equipment, which comprises the step S1 of carrying out the soil internal humidification and soil loosening process on the soil to be shoveled in advance through the soil humidity adjusting device 1; s2, carrying out a seamless soil shoveling and transferring process on the soil to be shoveled after the treatment of the step S1 through the shoveling device 3, the spiral soil discharging device 4 and the transfer device 5; and S3, performing a direct soil returning process by adopting the uniform soil returning device 6. In order to better achieve the continuous effect of soil moving and returning, the step S2 includes a process of directly performing following soil receiving and removing on the contaminated soil output by the transport device 5 by using an external muck truck, and the step S3 includes a process of directly performing following soil entering on the new soil by using an external muck truck on the soil inlet 61.

The repairing equipment provided by the invention carries out horizontal cutting on soil in advance through the precut vertical plate 11 arranged on the soil humidity adjusting device 1, carries out humidity adjustment on a contact soil layer through the water injection hole at the side part of the precut vertical plate 11, so that the contact soil layer is easy to shovel, shovels soil through the shoveling device 3, shovels the adjacent soil through a plurality of upper and lower layered shoveling openings, and in the process of shoveling soil, the soil automatically pushes the roller frame body 322 to rotate, further loosens and cuts the soil under the action of the loosening needle columns 323, so that the soil is convenient to move, the roller frame body 322 rotates to conform to the stirring action of the soil on the roller frame body, so that the soil layer to be inserted is further dispersed, the possibility of blocking of the soil layer in a pipeline is reduced, then the soil sent out from the tail end of the pipeline is lifted and transferred through the spiral soil discharging device 4 butted at the rear side, finally the soil is removed through the transferring device 5 into the hopper of the relatively static soil transport vehicle at the outer side, the uniform soil returning device 6 can be driven by the rear wheel 221, the swinging strip assemblies 62 are in a self-contact manner, the rotation frequency of the rear wheel 221, the swinging strip assemblies 62 is in a self-driving manner, and the rear wheel 221, so that the uniform swinging of the swinging strip assemblies 62 is realized, and the reciprocating movement of the reciprocating and the reciprocating motion assemblies 62, and the reciprocating motion of the uniform returning device is realized through the reciprocating hole plate in the uniform returning device 62, and the uniform returning device 62, so that the reciprocating motion process of the uniform returning device.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a prosthetic devices for comprehensive improvement of farmland which characterized in that: including soil moisture adjusting device, frame body, shovel native device, spiral unearthed device, transfer device and even back native device, the frame body is including supporting the girder, the anterior fixed mounting who supports the girder has soil moisture adjusting device, soil moisture adjusting device is used for following the vertical cutting dispersion soil of direction of advance in advance, it is connected with preceding supporting beam to support the girder front end, preceding supporting beam bottom is equipped with track support train, the common embedded fixed mounting of shovel native device and spiral unearthed device is in support girder middle part, shovel native device is used for carrying out direct shovel into to the soil that soil moisture adjusting device handled, and spiral unearthed device is used for accepting the lifting the terminal soil of extruding of shovel native device, support girder upper portion and install transfer device, transfer device includes horizontal conveyor, even native oblique fill and outer side conveyer belt, horizontal conveyor is used for accepting the terminal unearthed of spiral unearthed device, even native oblique fill fixed mounting is at horizontal conveyor is terminal, even native oblique fill is including the bottom oblique sieve board that is used for even soil, establish in the even oblique fill side bottom of side of outer side, the outer side of transporting device is used for the back is equipped with the back soil moisture adjusting device and is used for the back is equipped with the back soil drive mechanism.

2. The remediating apparatus as set forth in claim 1, wherein: soil moisture adjusting device is including precutting riser and counter weight water tank, precutting riser includes longitudinal arrangement a plurality of parallel plate body and each plate body bottom correspondence of supporting the girder bottom are equipped with the bottom shovel board, precutting riser rear portion is connected with the support swash plate, the embedded cartridge in the face outside of precutting riser has water injection device, water injection device supplies water through the counter weight water tank, water injection device includes the water injection billet, the water injection billet cartridge is in the face outside of precutting riser, and the water injection billet outside is equipped with oblique apopore.

3. A remediating apparatus as defined in claim 1 for integrated farmland remediation, wherein: the device of shoveling soil includes the layer cutting board, the equidistant vertical range of layer cutting board, form the layer between the layer cutting board and cut the passageway, the upper portion that the passageway was cut on the layer and the lower part welding that is located corresponding layer cutting board has the branch native pressure head, divide native pressure head cross-section to be triangle-shaped, divide native pressure head rear side to extend and be equipped with the wheel carrier, vertically install the roller frame body on the wheel carrier, every layer cutting board end-to-end connection has the curved board of defeated soil, and the curved board cross-section of defeated soil is the S-shaped, the end and the spiral of the curved board of defeated soil device lateral part intercommunication realize out soil.

4. A remediating apparatus as set forth in claim 3, wherein: install the pine on the roller support body and dial the needle post, the roller support body is vertical column segmentation stake body, every segmentation cross-section of roller support body is four-bar linkage ring, the pine is dialled the needle post and is all be obtuse angle formula welding at four connecting rod ends, the end that the needle post was dialled to the pine is equipped with flat needle mouth.

5. The remediating apparatus as set forth in claim 1, wherein: the spiral soil discharging device comprises a motor driving mechanism, a conveying cylinder and a spiral conveying roller, the spiral conveying roller is rotatably arranged at the center of the conveying cylinder and is driven by the motor driving mechanism, the conveying cylinder is arranged obliquely in the front direction, a soil inlet is formed in the wall of the front side cylinder of the conveying cylinder, and the soil inlet is used for being in butt joint with the soil shoveling device.

6. The remediating apparatus as set forth in claim 1, wherein: the utility model discloses a soil collection device, including support girder, even native device, it includes the hole of going out, swing strip subassembly, swing mounting bracket, reciprocating drive mechanism and unearthed mouth, it all is hourglass hopper-shaped to go back native device and establish on the cantilever beam of back, even native device of returning is including advancing soil mouth, swing strip subassembly, swing mounting bracket, reciprocating drive mechanism and unearthed mouth, it all is hourglass hopper-shaped to advance soil mouth and unearthed mouth, unearthed mouthful embedding is in the cantilever beam below of back, advance soil mouth and unearthed mouthful through swing mounting bracket intercommunication, swing mounting bracket bottom is equipped with the orifice plate, the orifice plate front side is equipped with the hourglass groove of receiving soil, swing strip subassembly is installed on the orifice plate, swing strip subassembly is the four-bar deformation telescopic machanism of flat direction, and swing strip subassembly center upper portion is connected with the board that connects soil, reciprocating drive mechanism is connected to swing strip subassembly drive end, and reciprocating drive mechanism includes two-way lead screw, two-way lead screw both ends are through linear guide device slidable mounting on the cantilever beam of back, suit drive nut on the two-way lead screw, drive nut is through the reciprocal linear motion of continuous rotary drive.

7. A method of remediating agricultural land for comprehensive remediation by means of the apparatus of claims 1-6, comprising the steps of: step S1, carrying out a soil internal humidification loosening process on soil to be shoveled in advance through a soil humidity adjusting device; s2, carrying out a seamless soil shoveling and transferring process on the soil to be shoveled after the treatment of the step S1 through a shoveling device, a spiral soil discharging device and a transferring device; and S3, performing a direct soil returning process by adopting an even soil returning device.

8. The remediation method for comprehensive farmland remediation according to claim 7, wherein: and the step S2 comprises a process of directly carrying out following soil receiving and removing on the polluted soil output by the conveying device by adopting an external muck truck.

9. The remediation method for comprehensive farmland remediation according to claim 7, wherein: and the step S3 comprises the following soil feeding process of new soil directly carried out on the soil inlet by adopting an external muck truck.