CN114871260B - Heavy metal contaminated soil remediation device and remediation method - Google Patents

Abstract

The invention relates to the field of soil remediation, and discloses a heavy metal contaminated soil remediation device which comprises a shell, wherein the upper side and the lower side of the shell are respectively communicated with a feeding hopper and a discharging channel, a guide groove is formed in the shell, control components are arranged at the central positions of the front side and the rear side of the shell, each control component comprises a filter plate, filter holes are formed in the surfaces of the filter plates and used for filtering soil moving from the feeding hopper to the discharging channel, and the two filter plates are symmetrically distributed along the guide groove; the invention also discloses a method for restoring the heavy metal contaminated soil. According to the invention, through the matching among the guide groove, the control assembly, the filter plate, the shell and the like, the filter plate is driven to rotate back and forth along the guide groove, so that the soil can be effectively crushed, the soil is continuously rolled back and forth and automatically discharged, and the soil crushing effect and the impurity screening effect are better; the sundries filtered down can be automatically gathered, so that the sundries can be quickly cleaned in the later period, and the burden of workers is reduced.

Description

Heavy metal contaminated soil remediation device and remediation method

Technical Field

The invention relates to the technical field of soil remediation, in particular to a heavy metal contaminated soil remediation device and a remediation method.

Background

Heavy metals cannot be decomposed by soil microorganisms and are easy to accumulate, and are converted into methyl compounds with higher toxicity, and even some of the heavy metals are accumulated in a human body at harmful concentration through a food chain, so that the human health is seriously harmed. When the soil is repaired, sundries such as stone blocks and the like in the soil need to be screened out in advance so as to improve the repairing effect and save resources.

Chinese patent publication No. CN212469216U discloses a heavy metal contaminated soil prosthetic devices, including the barrel, barrel upper portion one side is equipped with adds native mouth, barrel lower part one side is equipped with the soil discharge mouth, the bottom is equipped with the rotating electrical machines in the barrel, the rotating electrical machines top is equipped with the soil discharge swash plate, the rotating electrical machines is connected with rotation axis one end. It is rotatory to drive the rotation axis through the rotating electrical machines, and the rotation axis drives a sieve tube and first breaker is rotatory, can sieve out debris such as stone piece through the rotation of a sieve tube, through the relative motion of first breaker and second breaker, can carry out efficient stirring.

The device toper end fence is through realizing that debris sieves out based on the rotation of rotation axis rotates, and soil is followed toper end fence and is rotated under centrifugal force effect when using, can take place to pile up along the annular side fence on toper end fence, and then influences the circulation of soil and the sieving out of debris, has certain use limitation.

Therefore, it is necessary to provide a device and a method for remedying heavy metal contaminated soil to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a heavy metal contaminated soil remediation device and a remediation method, and aims to solve the problems that soil in the background art is accumulated along an annular side rail of a conical bottom rail under the action of centrifugal force along with the rotation of the conical bottom rail, so that the circulation of the soil and the screening of impurities are influenced, and the like.

In order to achieve the purpose, the repair device with the filter plate capable of simulating the wing flapping track to move is designed, so that the automatic rolling of soil is realized, and the rapid circulation and the screening out of sundries are realized.

Based on the above thought, the invention provides the following technical scheme: a heavy metal contaminated soil remediation device comprises a shell, wherein the upper side and the lower side of the shell are respectively communicated with a feeding hopper and a discharging channel, a guide groove is formed in the shell, control components are arranged at the central positions of the front side and the rear side of the shell and comprise filter plates, filter holes are formed in the surfaces of the filter plates and used for filtering soil moving from the feeding hopper to the discharging channel, the two filter plates are symmetrically distributed along the guide groove, the front side and the rear side of each filter plate are movably attached to the front inner wall and the rear inner wall of the shell respectively, and the opposite sides of the two filter plates are movably attached to the guide groove; the control assembly can drive the filter plate to reciprocate along the guide groove, and the moving interval is from the junction of the corresponding side of the feeding hopper and the shell to the junction of the corresponding side of the discharging channel and the shell.

As a further scheme of the invention: the control assembly further comprises a motor fixedly connected with the surface of the shell, and the output end of the motor is fixedly connected with a round rod which extends into the shell and is fixedly connected with the filter plate.

As a further scheme of the invention: the length of the round rods is equal to half of the axial length of the shell, and the two round rods are in a front-back collinear state and keep movable fit.

As a further scheme of the invention: the surface of two filter plates all is provided with a plurality of inserted bar that is the rectangle array and arranges, and a plurality of inserted bar on two filter plates is dislocation set.

As a further scheme of the invention: the lengths of the plurality of the inserting rods are sequentially increased from the round rods to the direction of the guide groove.

As a further scheme of the invention: the bottom of the filter plate is provided with a placing groove, and an adjusting component is slidably mounted in the placing groove; when the two filter plates approach/move away from each other, the adjusting assembly moves along the placement groove in a direction approaching/moving away from the guide groove.

As a further scheme of the invention: the adjusting part includes the slide with standing groove sliding fit, the surface of slide run through set up with a plurality of through-hole of filtration pore adaptation, the equal fixed mounting in both sides of slide has the ejector pin.

As a further scheme of the invention: the end part of the ejector rod, which is far away from the sliding plate, is fixedly provided with an elastic layer, and the surface of the sliding plate, which is close to the filter plate, is in a semicircular arrangement.

As a further scheme of the invention: the guide groove is a circular groove or a spherical groove.

As a further scheme of the invention: the filter plate is characterized in that the inserted bar penetrates through the filter plate and is in running fit with the filter plate, the bottom of the inserted bar protrudes out of the filter plate relatively and is fixedly provided with a gear, two sides of the sliding plate are fixedly provided with first racks in transmission connection with part of the gears, and the surface of the sliding plate is fixedly provided with second racks in transmission connection with the rest of the gears.

The invention also provides the following technical scheme: a heavy metal contaminated soil remediation method comprises the following steps:

s1, introducing soil into the shell through a feeding hopper;

s2, driving the filter plate to reciprocate along the guide groove through the control assembly;

s3, the filter plate is matched with the control assembly to crush the soil when moving, and the crushed soil flows down through the guide groove and the blanking channel and sundries are blocked;

and S4, the two filter plates are stopped in a non-horizontal collinear state through the control assembly, so that sundries are gathered, concentrated and cleaned.

Compared with the prior art, the invention has the beneficial effects that: through the matching among the guide groove, the control assembly, the filter plate, the shell and the like, the filter plate is driven to rotate back and forth along the guide groove, so that the soil can be effectively crushed, the soil is continuously rolled back and forth and automatically discharged, and the soil crushing effect and the sundries screening effect are better; the filtered sundries can be automatically gathered, so that the sundries can be quickly cleaned in the later period, and the burden of workers is reduced; the filter plate still plays the effect of making a round trip to scrape the guiding groove when reciprocating motion, avoids soil to adhere to on the guiding groove, and overall structure is concise, and the practicality is higher.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a perspective view of the overall construction of the present invention;

FIG. 2 is a schematic view of the internal structure of the housing of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of a sieve mesh and inserted rod structure of the present invention;

FIG. 5 is a schematic view of the structure of the placement groove and the chute of the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 5;

FIG. 7 is a schematic diagram of the filter plate and plunger configuration of the present invention;

FIG. 8 is an enlarged view of the structure of FIG. 7 at C;

FIG. 9 is a schematic view of the slider and groove configuration of the present invention;

fig. 10 is an enlarged view of the structure at D in fig. 9.

In the figure: 1. a housing; 2. a control component; 3. feeding a hopper; 4. a discharging channel; 5. an adjustment assembly; 201. a round bar; 202. filtering the plate; 203. filtering holes; 204. inserting a rod; 205. a placement groove; 206. a chute; 207. a gear; 501. a slide plate; 502. a top rod; 503. a through hole; 504. a first rack; 505. a groove; 506. a second rack.

Detailed Description

The first embodiment is as follows:

referring to fig. 1 to 2, an embodiment of the present invention provides a heavy metal contaminated soil remediation device, which is mainly used for improving a screening effect on impurities such as stones, and the soil remediation device includes a housing 1, wherein the housing 1 is cylindrical, and a guide groove is formed in the housing, and the cylindrical housing 1 makes a floor area smaller; the upper side and the lower side of the shell 1 are respectively and fixedly communicated with a feeding hopper 3 and a discharging channel 4, soil is fed into the shell 1 from the feeding hopper 3, and screened soil is discharged from the discharging channel 4; the front side and the rear side of the shell 1 are respectively provided with a control component 2 used for receiving soil falling from a feeding hopper 3, the two control components 2 are arranged along the whole guide groove in a bilateral symmetry mode, the control components 2 comprise filter plates 202 used for filtering sundries in the soil, the filter plates are provided with filter holes 203 for filtering the sundries, the area of each filter plate 202 is equal to half of the vertical sectional area (namely, the front side and the rear side of each filter plate 202 are movably attached to the front inner wall and the rear inner wall of the shell 1 respectively, the opposite sides of the two filter plates 202 are movably attached to the guide grooves respectively), the filter plates 202 can reciprocate along the guide grooves under the action of the control components 2, the movement interval is from the junction of the feeding hopper 3 and the shell 1 to the junction of the discharging channel 4 and the shell 1, namely, the movement interval of the filter plates 202 on the left side (right side) is from the junction of the left side (right side) of the feeding hopper 3 and the shell 1 to the junction of the left side (right side) of the discharging channel 4 and the shell 1, and the filter plates 202 can not influence the feeding of the discharging channel 4.

In the structure, the guide groove can be a circular groove or a spherical groove, and when the circular groove/the spherical groove is used, soil can freely slide down along the groove wall, so that the soil is guided to facilitate blanking; when the spherical groove is used, the blanking effect is better compared with that of a circular groove because the spherical groove has the converged bottom; in this embodiment the guide groove matches the cylindrical shape of the housing 1, so a circular groove is used.

Referring to fig. 1 to 4, in the present embodiment, it is preferable that: the control assembly 2 further comprises a motor fixedly connected with the front/rear surface of the housing 1, the motor is a servo motor, the output end of the motor is fixedly connected with a round rod 201 extending into the housing 1, the round rod 201 can rotate along the radial center of the housing 1, and the filter plate 202 is fixedly mounted on the outer surface of the round rod 201 and located inside the housing 1.

In the above structure, in order to avoid the interference of the round rods 201 on the front and rear control assemblies 2, the length dimension of the round rods 201 is equal to half of the axial length dimension of the housing 1, and at this time, the two round rods 201 are in a front and rear collinear state and keep movable fit without interference. Meanwhile, in order to avoid interference of rotation of the filter plates 202 on the two control assemblies 2, a chamfer may be provided at a mounting region of the filter plates 202 and the round bar 201, in which case the two filter plates 202 do not come into contact when rotated based on the corresponding round bar 201. When the device is used, the front side (rear side) motor drives the round rod 201 to rotate clockwise (anticlockwise), so that the two filter plates 202 can synchronously approach or separate from each other based on the round rod 201, when the two filter plates 202 approach each other, the upper included angle of the two filter plates is converted into an acute angle from a flat angle, and when the two filter plates 202 separate from each other, the upper included angle of the two filter plates is converted into a flat angle from an acute angle and finally converted into an obtuse angle, and the integral motion track of the two filter plates 202 is similar to the flapping track of wings; the acute angle when they approach each other depends on the width of the upper hopper 3, and the obtuse angle when they are away from each other depends on the width of the lower chute 4, and the smaller the left-right width of the upper hopper 3/lower chute 4, the closer the two filter plates 202 are above/below the guide groove. Another design benefit of the filter plate 202 and the round rod 201 is that the soil can be effectively prevented from leaking from the joint between the filter plate 202 and the round rod 201, and even if the soil falls on the chamfer angle formed on the filter plate 202, the subsequent reciprocating swing of the filter plate 202 is affected to cause separation.

In order to improve the crushing effect on soil when two filter plates 202 are close to each other, and to make sundries in the soil better sieve out, a plurality of inserted bars 204 arranged in a rectangular array are arranged above the two filter plates 202, the inserted bars 204 and the filter holes 203 on the filter plates 202 are arranged in a staggered manner, and meanwhile, the inserted bars 204 on the two filter plates 202 are also arranged in a staggered manner. In order to adapt the sector area formed by the two filter plates 202 when they are close to each other, so as to further improve the crushing effect, the length of the plug-in rod 204 increases from the round rod 201 to the direction of the guide slot, and when the two filter plates 202 are close to each other, the plug-in rods 204 with longer length can be inserted into the opening position of the sector area in a staggered way.

During the use, at first let in soil through the inside of hopper 3 into casing 1, then start front side (rear side) motor and drive front side (rear side) pole 201 motor and drive pole 201 clockwise (anticlockwise) and rotate, and then drive two filter plates 202 and fold gradually and form the acute angle based on pole 201 in the top of circular recess, soil rolls the gathering along filter plate 202 to the center at this in-process, filter plate 202 extrudes the crushing to the soil, inserted bar 204 breaks soil, the soil that accords with the size requirement falls from filtration pore 203, discharge through feed chute 4 along the circular recess. Then, the motor of the round rod 201 on the front side (the rear side) drives the round rod 201 to rotate anticlockwise (clockwise), the two filter plates 202 are driven to be separated downwards along the filter plates 202 based on the fact that the round rod 201 is far away from the upper portion of the round groove and is gradually folded below the round groove, soil meeting the size requirement is discharged through the filter holes 203 and the discharging channel 4, and the effect of assisting screening out sundries is achieved in the reciprocating rolling process of the soil.

In conclusion, through the cooperation of the structures such as the guide groove, the round rod 201, the filter plate 202 and the insertion rod 204, the effective crushing of the soil can be realized along with the continuous reciprocating rotation of the filter plate 202 driven by the motor (the rotation speed of the filter plate 202 driven by the motor is changed, and different crushing effects can be obtained), so that the soil is continuously rolled back and forth and automatically discharged, and the crushing effect of the soil and the screening effect of impurities are better. The filtered sundries are gathered together (realized by folding the two filter plates 202 at the upper part/lower part, at the moment, the two filter plates 202 are in a non-horizontal collinear state, the sundries are gathered at the position close to the round rod 201 at the center when the two filter plates 202 are folded at the upper part, and the sundries are gathered at the position close to the groove wall of the round groove when the two filter plates 202 are folded at the lower part), so that the sundries can be quickly and effectively cleaned at a later stage (the sundries can be taken out through the detachable side plates with corresponding positions), and the cleaning burden of workers is greatly reduced. Simultaneously, filter plate 202 is along circular slot reciprocating motion's in-process, can also play the effect of making a round trip to scrape the guiding groove, avoids soil to adhere to on the guiding groove, guarantees the effective utilization of resource, and overall structure is concise, and the practicality is higher.

The second embodiment:

referring to fig. 1 to 5, on the basis of the first embodiment, a placing groove 205 is formed in the bottom of each filter plate 202, the adjusting assembly 5 is installed inside the placing groove 205 in a left-right sliding manner, when the two filter plates 202 approach each other above the round rod 201, the adjusting assembly 5 moves towards the round rod 201 along the placing groove 205 under the action of gravity, and when the two filter plates 202 approach each other below the round rod 201, the adjusting assembly 5 moves away from the round rod 201 along the placing groove 205 under the action of gravity.

Referring to fig. 1 to 6, in the present embodiment, it is preferable that: the adjusting assembly 5 comprises a sliding plate 501 which is in sliding fit with the placing groove 205 left and right and has a certain weight, sliding grooves 206 communicated with the placing groove 205 are symmetrically formed in the filter plate 202 so as to realize sliding assembly with the sliding plate 501, and the top of the sliding plate 501 is movably attached to the inner top wall of the placing groove 205; the surface of the sliding plate 501 is provided with a plurality of through holes 503 with the size matched with that of the filtering holes 203 in a penetrating manner, so that soil can flow downwards and impurities can be blocked; the left side and the right side of the sliding plate 501 are both fixedly provided with the ejector rods 502, when the sliding plate 501 slides to one side to the limit position along the placing groove 205 under the action of gravity, the ejector rods 502 collide and abut against the left groove wall/the right groove wall of the placing groove 205, the number of the ejector rods 502 can be increased in practical use, and the end part of the ejector rod 502 far away from the sliding plate 501 is additionally provided with an elastic layer, so that the ejector rod 502 and the filter plate 202 are prevented from being damaged.

In order to ensure that the soil can smoothly fall down after flowing to the sliding plate 501 through the filtering holes 203, the top of the sliding plate 501 can be designed in a semicircular shape, so that the adhesion of the soil above the sliding plate 501 is avoided, and meanwhile, the top of the sliding plate 501 is matched with the bottom of the filter plate 202 to further have a grinding effect on the soil.

When the filter plate is used, soil is introduced into the shell 1 through the feeding hopper 3, the motor is started, the two filter plates 202 are driven to synchronously swing back and forth based on the round rod 201 through the matching of the structures of the shell 1, the round rod 201, the round groove and the like, the working process and the effect of the part are the same as those in the first embodiment, and repeated description is omitted here. When the two filter plates 202 approach each other above the round bar 201, the sliding plate 501 moves along the sliding groove 206 toward the round bar 201 under the action of gravity, and finally collides and offsets with the groove wall of the placing groove 205 near the round bar 201, and when the two filter plates 202 approach each other below the round bar 201, the sliding plate 501 moves toward the other groove wall of the placing groove 205 under the action of gravity, and collides and offsets; in the process, the sliding plate 501 can cut the filtering holes 203 through the soil again, and meanwhile, the collision between the mandril 502 and the placing groove 205 plays a role in shaking the filtering plate 202, so that the filtering holes 203 are effectively prevented from being blocked.

In the first embodiment, although effective crushing of soil and accurate screening of impurities are realized by the mutual approaching/departing of the two filter plates 202, after long-term use, the soil may be blocked in the filter holes 203, which affects the subsequent soil discharge and use of the filter plates 202, and has certain use limitations. Compared with the first embodiment, through the matching of the structures such as the placement groove 205, the sliding plate 501, the filter plate 202 and the ejector rod 502, when the filter plate 202 rotates in a reciprocating manner based on the round rod 201, the sliding plate 501 can slide in a reciprocating manner relative to the placement groove 205 (the filter plate 202), the soil can be cut up and ground again in the sliding process, the filter plate 202 and the filter hole 203 can be vibrated and prevented from being blocked after the sliding is in place, the stable discharge of the soil and the long-term use of the filter plate 202 are ensured, meanwhile, the first embodiment is combined with the movement of the filter plate 202, and the applicability is stronger.

Example three:

referring to fig. 1 to 7, in the second embodiment, the insertion rod 204 penetrates through the filter plate 202 and is rotatably engaged therewith, the top of the insertion rod 204 protrudes from the filter plate 202 and is arranged in a height difference manner, the bottom of the insertion rod 204 extends to the position of the placement groove 205 and is fixedly installed with a gear 207, the insertion rods 204 located at the frontmost side and the rearmost side are inserted into the sliding groove 206 from above, the gear 207 corresponding to a part of the insertion rod 204 is located inside the sliding groove 206, the other part of the insertion rod 204 is inserted into the placement groove 205, and the gear 207 corresponding to a part of the insertion rod 204 is located inside the placement groove 205.

The front and rear sides of the sliding plate 501 are fixedly provided with a first rack 504 in sliding fit with the sliding slot 206, and when the first rack 504 moves in the sliding slot 206 along with the sliding plate 501, the first rack can be matched with the gear 207 to drive the foremost/rearmost insertion rod 204 to rotate. In order to avoid interference with the inserted bar 204 and the gear 207 extending into the placing groove 205, a plurality of grooves 505 arranged in a rectangular array are formed at the top of the sliding plate 501, and second racks 506 corresponding to the gear 207 are fixedly installed inside the grooves 505; when the sliding plate 501 slides along the sliding groove 206, part of the gear 207 can enter the inside of the groove 505 and be in meshing transmission with the second rack 506.

Of course, the installation direction of the second rack 506 in the groove 505 can also be changed, and the second rack 506 can be arranged in the groove 505 in the same direction, or symmetrically as shown in fig. 10, so as to change the rotation direction of the second rack 506 driving different plunger 204 through the gear 207. Meanwhile, in order to improve the soil crushing and stirring effect of the rotating inserted rod 204, a plurality of bulges can be protruded outwards along the rod body of the inserted rod 204 and are arranged in the area above the filter plate 202, so that the performance can be further improved.

Referring to fig. 1 to 10, in the present embodiment, it is preferable that: the length dimension of the first rack 504 is greater than or equal to the distance dimension between two adjacent gears 207, so that when the first rack 504 moves back and forth along with the sliding plate 501, the first rack does not separate from the gears 207, and the sliding plate 501 does not have displacement deviation in the front-back direction. Through the arrangement of the first rack 504, the gear 207 is matched to drive the insertion rod 204 at the frontmost/rearmost side to rotate, and the sliding plate 501 is also matched to the sliding slot 206 to realize the positioning of the sliding plate 501.

When the device is used, soil is introduced into the shell 1 through the feeding hopper 3, the motor is started, the two filter plates 202 are driven to synchronously swing back and forth based on the round rod 201 through the matching of the structures of the shell 1, the round rod 201, the round groove and the like, the sliding plate 501 slides back and forth along the placing groove 205 when the filter plates 202 move, the working process and the effect of the part are the same as those in the second embodiment, and repeated description is omitted here. When the sliding plate 501 moves toward/away from the round bar 201 along the sliding groove 206 under the action of gravity, the sliding plate 501 can drive the first rack 504 and the second rack 506 to move synchronously, the first rack 504 and the second rack 506 can both drive the inserting rod 204 to rotate through the gear 207, and at this time, the inserting rod 204 can move relatively close to the filter plate 202 and can rotate in the same direction or in different directions based on the filter plate 202 to continuously crush and stir soil.

In the second embodiment, although re-shredding of soil and oscillation of the filter holes 203 can be achieved, the filter plate 202 is in a fixed state relative to the filter plate 202 during the reciprocating rotation based on the round rod 201, so that the soil crushing and stirring effects are still to be improved, and certain use limitations exist. Compared with the second embodiment, through the matching of the structures of the inserted rod 204, the gear 207, the sliding plate 501, the first rack 504 and the like, the inserted rod 204 can move close to the filter plate 202 relatively, and can rotate in the same direction or different directions based on the filter plate 202, so that the soil can be continuously crushed and stirred, the folding or separating process of the filter plate 202 can be stably carried out, the crushing effect on the soil is further improved, an auxiliary effect is also achieved for screening out impurities in the soil, and meanwhile, the inserted rod is combined with the movement of the filter plate 202 and the movement of the sliding plate 501, and more requirements in practical use are met.

Example four:

referring to fig. 1 to 10, an embodiment of the present invention provides a method for remediating heavy metal contaminated soil, and the embodiment employs any one of the first to third embodiments, thereby having corresponding advantages. The method comprises the following specific steps: firstly, soil is introduced into the shell 1 through a feeding hopper 3 and a motor is started; in the second step, the motor drives the filter plates 202 and the inserting rods 204 to swing back and forth based on the round rods 201 through the round rods 201, and the two filter plates 202 move along the flapping track of wings; thirdly, when the filter plate 202 moves, the inserted link 204 is matched to crush the soil, and the crushed soil flows down through the filter holes 203, the guide groove and the blanking passage 4 and sundries are blocked; and fourthly, the motor is turned off, so that the two filter plates 202 stay in a non-horizontal collinear state, and sundries are gathered, concentrated and cleaned.

Claims (8)

1. A heavy metal contaminated soil remediation device comprises a shell, wherein the upper side and the lower side of the shell are respectively communicated with a feeding hopper and a discharging channel, and the heavy metal contaminated soil remediation device is characterized in that a guide groove is formed in the shell, control components are arranged at the central positions of the front side and the rear side of the shell and comprise filter plates, filter holes are formed in the surfaces of the filter plates and used for filtering soil moving from the feeding hopper to the discharging channel, the two filter plates are symmetrically distributed along the guide groove, the front side and the rear side of each filter plate are movably attached to the front inner wall and the rear inner wall of the shell respectively, and the opposite sides of the two filter plates are movably attached to the guide groove respectively; the filter plate can be driven to reciprocate along the guide groove by the control assembly, and the moving interval is from the junction of the corresponding side of the feeding hopper and the shell to the junction of the corresponding side of the discharging channel and the shell;

the bottom of the filter plate is provided with a placing groove, and an adjusting component is slidably arranged in the placing groove; when the two filter plates approach to/move away from each other, the adjusting assembly moves towards/away from the guide groove along the placing groove;

the adjusting component comprises a sliding plate in sliding fit with the placing groove, a plurality of through holes matched with the filter holes are formed in the surface of the sliding plate in a penetrating mode, and ejector rods are fixedly mounted on the two sides of the sliding plate.

2. The heavy metal contaminated soil remediation device of claim 1, wherein the control assembly further comprises a motor fixedly connected to the surface of the housing, and the output end of the motor is fixedly connected to a round rod extending into the housing and fixedly connected to the filter plate.

3. The heavy metal contaminated soil remediation device of claim 2, wherein the length of the round bar is equal to half of the axial length of the housing, and the two round bars are in a front-back collinear state and are movably attached to each other.

4. The heavy metal contaminated soil remediation device of claim 1, wherein the surface of each of the two filter plates is provided with a plurality of inserted rods arranged in a rectangular array, and the plurality of inserted rods on the two filter plates are arranged in a staggered manner.

5. The heavy metal contaminated soil remediation device of claim 4, wherein the length of the plurality of insertion rods increases in sequence from the round rod to the guide groove.

6. The heavy metal contaminated soil remediation device of claim 1, wherein the end of the ejector rod away from the slide plate is fixedly provided with an elastic layer, and the surface of the slide plate close to the filter plate is semicircular.

7. The heavy metal contaminated soil remediation device of any one of claims 1 to 6, wherein said guide groove is provided as a circular groove or a spherical groove.

8. A remediation method using the heavy metal contaminated soil device of any one of claims 1 to 7, comprising the steps of:

s1, introducing soil into the shell through a feeding hopper;

s2, driving the filter plate to reciprocate along the guide groove through the control assembly;

s3, the filter plate is matched with the control assembly to crush the soil when moving, and the crushed soil flows down through the guide groove and the blanking channel and sundries are blocked;

and S4, the two filter plates are stopped in a non-horizontal collinear state through the control assembly, so that sundries are gathered, concentrated and cleaned.

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