CN213254986U

CN213254986U - Soil remediation preprocessing device

Info

Publication number: CN213254986U
Application number: CN202021974677.2U
Authority: CN
Inventors: 王晓东; 王曦明; 吕相明
Original assignee: Beikuangcheng Ecological Technology Group Co ltd
Current assignee: Beikuangcheng Ecological Technology Group Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-05-25
Anticipated expiration: 2030-09-10

Abstract

The utility model relates to a soil remediation preprocessing device, it includes the soil treatment case, and soil treatment top rigid coupling has the income hopper rather than inside intercommunication, and soil treatment incasement is by last to having set gradually be used for the soil crushing mechanism to the first breakage of soil, be used for refining the mechanism and be used for sieving the sieve mechanism that shakes of qualified soil to the soil of the soil after the first breakage once more, and the bottom rigid coupling of soil treatment case has rather than the discharging pipe of inside intercommunication. The application has the effect that the particle size of soil particles can be reduced when the crushed soil is processed.

Description

Soil remediation preprocessing device

Technical Field

The application relates to the technical field of soil remediation, in particular to a soil remediation pretreatment device.

Background

The soil pollution has great influence on the production and life of human beings, the soil pollution area of cultivated land in China at present accounts for about one fifth of the cultivated land area in China, the soil pollution treatment mainly adopts physical, chemical, biological or combined methods, but the soil is required to be crushed before the soil is restored, and crushing equipment is required.

In view of the above-mentioned related technologies, the inventor believes that conventional crushing equipment can only crush the dried blocky contaminated soil into small pieces, and cannot reach a powder or a finer particle size, and conventional pretreatment crushing equipment can only crush the blocky contaminated soil and cannot guarantee the particle size of the soil.

SUMMERY OF THE UTILITY MODEL

In order to be able to reduce the particle size of soil particles in the processing of the soil after crushing, the application provides a soil remediation pretreatment device.

The application provides a soil remediation preprocessing device adopts following technical scheme:

the utility model provides a soil remediation preprocessing device, includes the soil treatment case, and soil treatment roof portion rigid coupling has rather than the income hopper of inside intercommunication, and the soil treatment incasement is by last to having set gradually under to be used for the first broken soil crushing mechanism of soil, be used for refining the mechanism and be used for sieving the sieve mechanism that shakes of the qualified soil of the soil after the first breakage once more, and the bottom rigid coupling of soil treatment case has rather than the discharging pipe of inside intercommunication.

Through adopting above-mentioned technical scheme, the staff will be waited for the soil of handling and pack into the soil treatment box from going into the hopper, soil becomes the soil of fritter or large granular form through the preliminary treatment of broken mechanism earlier, then refine the mechanism through soil again, thereby further break into powder or thinner particle diameter to the soil of fritter or large granular form, then screening the granule soil that meets the requirements by the sieve mechanism that shakes, and descend to on the bottom of box, again via discharging pipe roll-off soil treatment box, can carry out further processing breakage to the soil of broken fritter like this, thereby obtain the thinner soil of particle diameter.

Preferably, the broken mechanism of soil includes that two levels lay crushing roller, and every crushing roller rotates to be connected on two relative inner walls of soil processing case, and the lower port that goes into the hopper is located between two crushing rollers, is provided with on the lateral wall of soil processing case and orders about two drive assembly that crushing roller turned towards opposite direction.

Through adopting above-mentioned technical scheme, after in the staff adds the soil treatment box with pending soil from the pan feeding mouth, pending soil enters into between two crushing rollers, and the staff starts drive assembly for two crushing rollers rotate towards opposite direction, carry out the breakage through the bulge on the crushing roller global to soil.

Preferably, soil refines mechanism includes that two levels set up crushing roller, and the crushing roller is laid and is rotated the connection on two relative inner walls of soil processing case along the axis direction of crushing roller, and the clearance between two crushing rollers is less than the clearance between two crushing rollers, is provided with on the lateral wall of soil processing case and orders about two crushing roller towards opposite direction pivoted power component.

Through adopting above-mentioned technical scheme, the soil through two crushing rollers enters into between two crushing rollers through the dead weight, and the staff is through starting power component for two crushing rollers rotate towards opposite direction, thereby extrude the breakage to the soil that the particle diameter is greater than clearance between two crushing rollers, and then further refine the particle diameter of soil, in order to reach the requirement.

Preferably, the soil is handled the incasement symmetry and is provided with two deflectors, and two deflectors are located soil crushing mechanism and soil and refine between the mechanism, and between two directional crushing rollers of a side of deflector, another side rigid coupling of deflector is on the inner wall of soil processing case, and the deflector is higher than the deflector towards the side of crushing roller from the side of crushing roller.

Through adopting above-mentioned technical scheme, when soil between two crushing rollers fell into the upper surface of deflector, soil slided along the incline direction of deflector to at the deflector towards the side landing of crushing roller between two crushing rollers, and then make the soil through broken mechanism fall into between two crushing rollers relatively easily.

Preferably, a scraper is arranged below each crushing roller, two ends of each scraper are fixedly connected to the opposite inner walls of the soil treatment box respectively, and the upper side surface of each scraper abuts against the peripheral surface of each crushing roller.

Through adopting above-mentioned technical scheme, because soil between two crushing rollers receives the easy adhesion on the global of crushing roller of the extrusion of two crushing rollers, through the scraper blade for crushing roller rotates the in-process, and the soil of adhesion on crushing roller receives blockking of scraper blade, thereby orders about soil and crushing roller separation.

Preferably, the vibrating screen mechanism comprises a screen horizontally arranged, the lower surface of the screen is provided with two support plates, the two support plates are respectively and fixedly connected to the opposite inner walls of the soil treatment box, two connecting springs are fixedly connected between each support plate and the screen, and a control assembly for driving the screen to vibrate is arranged between each support plate and the screen; the control assembly supports the lower surface that leans on the screen cloth including setting up the eccentric disc in the backup pad top, the global of eccentric disc, and the rigid coupling has the third motor of ordering about eccentric disc pivoted on the lateral wall of soil processing case.

Through adopting above-mentioned technical scheme, when the staff starts the third motor and rotates, thereby drive the eccentric disc and rotate, when one side that the eccentric disc is farthest apart from the output shaft of third motor supports and leans on the screen cloth, the eccentric disc orders about the screen cloth and rises to the peak, when one side that the eccentric disc is nearest apart from the output shaft of third motor supports and leans on the screen cloth, the screen cloth descends to the minimum, the screen cloth is ordered about once reciprocating every week of eccentric disc rotation like this, when the eccentric disc rotates always, make the screen cloth be in the vibration state, the setting of spring, through the pulling force of spring, order about screen cloth and eccentric disc keep in contact.

Preferably, the upper surface of the screen is provided with an extrusion roller for extruding residual soil, a fixed rod penetrates through the extrusion roller along the axis of the extrusion roller, telescopic rods with variable lengths are fixedly connected to two ends of the fixed rod, a mounting plate fixedly connected to the inner wall of the soil treatment box is arranged above each telescopic rod, the mounting plate is arranged along the direction perpendicular to the extrusion roller, a T-shaped chute is formed in one surface of the mounting plate facing the telescopic rods along the length direction of the mounting plate, a sliding block in sliding fit with the chute is arranged in the chute, the sliding block is fixedly connected to the upper end of the telescopic rod, a lead screw is rotatably connected in each chute along the length direction of the chute, the sliding block is sleeved on the lead screw and rotatably connected with the lead screw, the end parts of the two lead screws on the same side penetrate out of the soil treatment box, and; the telescopic rod comprises an extension rod fixedly connected to the fixed rod, a sleeve is sleeved on the upper end of the extension rod, the upper end of the sleeve is sealed and fixedly connected with the sliding block, and a pressure spring for pushing the extension rod to move downwards is arranged in the sleeve.

Through adopting above-mentioned technical scheme, when the screen cloth stop vibration, often the upper surface of screen cloth still has the great soil of some granule to be difficult to pass through the screen cloth, the staff can start to control the subassembly this moment, order about the lead screw and take place to rotate, thereby it removes to drive the length direction of slider along the lead screw in the spout, it rolls also to order about the squeeze roll like this at the upper surface of screen cloth emergence, receive the thrust of pressure spring through the extension rod, thereby make the outer peripheral face of squeeze roll hug closely on the screen cloth, when the squeeze roll passes through the soil on the screen cloth, can pulverize soil, thereby when the staff orders about the screen cloth vibration once more, the soil of remaining on the screen cloth upper surface can pass through on the diapire of screen.

Preferably, control the subassembly including two sprockets of rigid coupling respectively at two lead screw break-outs ends, around being equipped with on two sprockets and realizing driven chain between the two, the rigid coupling has the fourth motor that orders about sprocket pivoted on the lateral wall of soil treatment case orientation sprocket.

Through adopting above-mentioned technical scheme, when the staff started the fourth motor, the fourth motor drove one of them sprocket and rotates, made another sprocket also take place to rotate through the transmission of chain to order about two lead screws in step and rotate, and then drive telescopic link synchronous motion on two lead screws, make the roll of squeeze roll on the screen cloth more smooth and easy.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the soil treatment box, the feeding hopper, the discharging pipe, the soil crushing mechanism, the soil refining mechanism and the vibrating screen mechanism, when a worker loads soil to be treated into the soil treatment box from the feeding hopper, the soil is firstly subjected to primary treatment by the crushing mechanism to become small or large granular soil and then passes through the soil refining mechanism, so that the small or large granular soil is further crushed into powder or finer particle size, then the granular soil meeting the requirements is screened by the vibrating screen mechanism and falls onto the bottom of the box body, and then the granular soil slides out of the soil treatment box through the discharging pipe, so that the crushed soil can be further processed and crushed, and the soil with finer particle size is obtained;

2. through the setting of scraper blade for crushing roller rotates the in-process, and the soil of adhesion on crushing roller receives blockking of scraper blade, thereby orders about soil and crushing roller separation.

Drawings

Fig. 1 is a schematic view of the overall structure of a soil remediation pretreatment device in an embodiment of the present application.

FIG. 2 is a cross-sectional view of a soil treatment box in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a vibrating screen mechanism in an embodiment of the present application.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a cross-sectional view of a sleeve in an embodiment of the present application.

Description of reference numerals: 1. a soil treatment box; 11. a guide plate; 12. a squeegee; 13. a squeeze roll; 14. fixing the rod; 15. a telescopic rod; 151. an extension pole; 152. a sleeve; 153. a pressure spring; 16. mounting a plate; 161. a chute; 162. a slider; 17. a screw rod; 18. a manipulation component; 181. a sprocket; 182. a chain; 183. a fourth motor; 2. feeding into a hopper; 3. a discharge pipe; 4. a soil crushing mechanism; 41. a crushing roller; 42. a drive assembly; 421. a first gear; 422. a first motor; 5. a soil refining mechanism; 51. a crushing roller; 52. a power assembly; 521. a second gear; 522. a second motor; 6. a vibrating screen mechanism; 61. screening a screen; 62. a support plate; 63. a connecting spring; 64. a control component; 641. an eccentric disc; 642. a third motor.

Detailed Description

The embodiment of the application discloses soil remediation preprocessing device. Referring to fig. 1 and 2, soil restoration preprocessing device includes the soil treatment case 1 of vertical setting, the top rigid coupling of soil treatment case 1 has rather than the income hopper 2 of inside intercommunication, soil treatment case 1 is interior by last to having set gradually down be used for the first broken soil crushing mechanism 4 of soil, be used for refining the mechanism 5 and be used for sieving the sieve mechanism 6 that shakes of qualified soil to the soil of the soil after first breakage once more, the bottom rigid coupling of soil treatment case 1 has rather than the discharging pipe 3 of inside intercommunication.

The staff will treat the soil from going into hopper 2 and pack into soil treatment case 1 in, soil is earlier through the preliminary treatment of soil crushing mechanism 4 and becomes the soil of fritter or large granular form, then refines mechanism 5 through soil again to further break into powder or more fine particle diameter to the soil of fritter or large granular form, then screening the granule soil that meets the requirements by the mechanism 6 that shakes, and descend on the bottom of box, again through discharging pipe 3 roll-off soil treatment case 1.

Referring to fig. 2, the soil crushing mechanism 4 includes two horizontally arranged crushing rollers 41, two ends of each crushing roller 41 abut against two opposite inner walls of the soil treatment box 1 and are rotatably connected with the soil treatment box 1, a lower port of the feeding hopper 2 is located between the two crushing rollers 41, a driving assembly 42 for driving the two crushing rollers 41 to rotate in opposite directions is arranged on the outer side wall of the soil treatment box 1, the end portions of the two crushing rollers 41 on the same side penetrate through the soil treatment box 1, a first gear 421 is coaxially and fixedly connected to the penetrating end of each crushing roller 41, the two first gears 421 are in meshed transmission, a first motor 422 for driving the one crushing roller 41 to rotate is arranged at the end deviating from the first gear 421, an output shaft of the first motor 422 is coaxially and fixedly connected to the crushing roller 41, and the first motor 422 is fixedly connected to the outer side wall of the soil treatment box 1 deviating from the first gear 421.

After the soil that will treat was added soil from the pan feeding mouth and is handled case 1, soil that will treat enters into between two crushing rollers 41, and the staff starts first motor 422 to drive the first gear 421 that links to each other with first motor 422 and rotate, two crushing rollers 41 are through the meshing transmission of two first gears 421, and then make two crushing rollers 41 rotate towards opposite direction, carry out the breakage through the bulge on crushing roller 41 global.

Referring to fig. 2, the soil refining mechanism 5 includes two horizontally disposed crushing rollers 51, the crushing rollers 51 are arranged along the axial direction of the crushing rollers 41, the gap between the two crushing rollers 51 is smaller than the gap between the two crushing rollers 41, two ends of each crushing roller 51 abut against two opposite inner walls of the soil treatment box 1 and are rotatably connected with the soil treatment box 1, a power assembly 52 for driving the two crushing rollers 51 to rotate in opposite directions is arranged on the outer side wall of the soil treatment box 1, the end portions of the two crushing rollers 51 on the same side penetrate through the soil treatment box 1, a second gear 521 is coaxially and fixedly connected with the penetrating end of each crushing roller 51, the two second gears 521 are meshed with each other for transmission, one end of one of the crushing rollers 51, which is far away from the second gear 521, is provided with a second motor 522 for driving the crushing roller to rotate, an output shaft of the second motor 522 is coaxially and fixedly connected with the crushing roller 51, and the second motor 522 is fixedly connected to the outer side wall of the soil treatment box 1, which is far away from the second gear 521.

Soil through two crushing rollers 41 enters into between two crushing rollers 51 through the dead weight, the staff is through starting second motor 522, thereby drive the second gear 521 rotation that links to each other with second motor 522, two crushing rollers 51 are through the meshing transmission of two second gear 521, and then make two crushing rollers 51 rotate towards opposite direction, thereby it is broken to be greater than the soil extrusion in clearance between two crushing rollers 51 to the particle diameter, and then further refine the particle diameter of soil, in order to reach the requirement.

Referring to fig. 2, in order to enable the soil passing through the soil crushing mechanism 4 to fall between the two crushing rollers 51, two guide plates 11 which are obliquely arranged are symmetrically arranged in the soil treatment box 1, the two guide plates 11 are positioned between the crushing rollers 41 and the crushing rollers 51, one side surface of each guide plate 11 points to between the two crushing rollers 51, the other side surface of each guide plate 11 is fixedly connected to the inner wall of the soil treatment box 1, and the side surface of each guide plate 11, which is far away from the crushing rollers 51, is higher than the side surface of each guide plate 11, which faces the crushing rollers 51; when the soil passing between the two crushing rollers 51 falls onto the upper surface of the guide plate 11 in this way, the soil slides in the inclined direction of the guide plate 11, and slides between the two crushing rollers 51 on the side of the guide plate 11 facing the crushing rollers 51, so that the soil passing through the soil crushing mechanism 4 is relatively easy to fall between the two crushing rollers 51.

Referring to fig. 2, since soil passing between the two crushing rollers 51 is easily adhered to the circumferential surfaces of the crushing rollers 51 by being pressed by the two crushing rollers 51, a scraper 12 is provided below each crushing roller 51 in the axial direction of the crushing roller 51, both ends of the scraper 12 are respectively fixed to the opposite inner walls of the soil treatment box 1, and the upper side of the scraper 12 abuts on the circumferential surfaces of the crushing rollers 51, so that the soil adhered to the crushing rollers 51 is blocked by the scraper 12 during the rotation of the crushing rollers 51, thereby driving the soil to be separated from the crushing rollers 51.

Referring to fig. 2 and 3, the vibrating screen mechanism 6 includes a screen 61 horizontally disposed below the crushing roller 51, two support plates 62 are disposed on a lower surface of the screen 61, the two support plates 62 are respectively and fixedly connected to the inner walls of the soil treatment box 1, two connecting springs 63 are fixedly connected between each support plate 62 and the screen 61, the two connecting springs 63 are arranged along the length direction of the support plates 62, and a control assembly 64 for driving the screen 61 to vibrate is disposed between each support plate 62 and the screen 61.

Referring to fig. 3 and 4, the control assembly 64 includes an eccentric disc 641 vertically disposed above the support plate 62, the circumferential surface of the eccentric disc 641 abuts against the lower surface of the screen 61, a third motor 642 for driving the eccentric disc 641 to rotate is fixedly connected to the outer sidewall of the soil treatment box 1, the third motor 642 vertically penetrates through the sidewall of the soil treatment box 1 and is fixedly connected to the eccentric disc 641, and the connection position of the third motor 642 and the eccentric disc 641 deviates from the center of the eccentric disc 641.

When the worker starts the third motor 642 to rotate, the eccentric disc 641 is driven to rotate, when the side of the eccentric disc 641 farthest from the output shaft of the third motor 642 abuts against the screen 61, the eccentric disc 641 drives the screen 61 to ascend to the highest point, and when the side of the eccentric disc 641 closest to the output shaft of the third motor 642 abuts against the screen 61, the screen 61 descends to the lowest point, so that the screen 61 is driven to move up and down once every rotation of the eccentric disc 641, and when the eccentric disc 641 rotates all the time, the screen 61 is in a vibration state, and the arrangement of the connecting spring 63 drives the screen 61 to keep in contact with the eccentric disc 641 through the pulling force of the connecting spring 63.

Referring to fig. 2 and 3, in order to make the soil fall into the bottom wall of the soil treatment box 1 through the screen 61 as much as possible, a squeeze roller 13 for squeezing the residual soil is arranged on the upper surface of the screen 61, a fixing rod 14 penetrates through the squeeze roller 13 along the axis of the squeeze roller, the squeeze roller 13 is rotatably connected to the fixing rod 14, telescopic rods 15 with variable lengths are vertically and fixedly connected to both ends of the fixing rod 14, a strip-shaped mounting plate 16 horizontally arranged is arranged above each telescopic rod 15, and the mounting plate 16 is arranged in the direction perpendicular to the squeeze roller 13 and fixedly connected to the inner wall of the soil treatment box 1. Referring to fig. 3 and 5, a T-shaped sliding groove 161 is formed in one surface of the mounting plate 16 facing the telescopic rod 15 along the length direction of the mounting plate 16, a sliding block 162 in sliding fit with the sliding groove 161 is arranged in the sliding groove 161, the sliding block 162 is fixedly connected to the upper end of the telescopic rod 15, a screw rod 17 is rotatably connected to each sliding groove 161 along the length direction of the sliding groove, the sliding block 162 is sleeved on the screw rod 17 and rotatably connected with the screw rod 17, the end portions of the two screw rods 17 on the same side penetrate through the soil treatment box 1, and a control assembly 18 for driving the sliding block 162 to move along the axis direction of the screw rod.

Referring to fig. 5, the telescopic rod 15 includes an extension rod 151 fixedly connected to the fixing rod 14, a sleeve 152 is sleeved on an upper end of the extension rod 151, an upper end of the sleeve 152 is closed and fixedly connected to a slider 162, a pressure spring 153 for pushing the extension rod 151 to move downwards is disposed in the sleeve 152, one end of the pressure spring 153 is fixedly connected to a closed end of the sleeve 152, and the other end of the pressure spring 153 is fixedly connected to the extension rod 151.

When the screen 61 stops vibrating, soil with larger particles still exists on the upper surface of the screen 61 and is difficult to pass through the screen 61, at this time, a worker can start the control assembly 18 to drive the screw rod 17 to rotate, so as to drive the sliding block 162 in the sliding groove 161 to move along the length direction of the screw rod 17, so as to drive the squeeze roller 13 to roll on the upper surface of the screen 61, the extension rod 151 is pushed by the compression spring 153, so that the outer peripheral surface of the squeeze roller 13 is tightly attached to the screen 61, when the squeeze roller 13 passes through the soil on the screen 61, the soil can be crushed, so that when the worker drives the screen 61 to vibrate again, the soil remaining on the upper surface of the screen 61 can slide down to the bottom wall of the soil treatment box 1 through the screen 61.

Referring to fig. 3, the control assembly 18 includes two chain wheels 181 respectively and fixedly connected to the two ends of the two lead screws 17, a chain 182 for driving the two chain wheels 181, a fourth motor 183 for driving the chain wheel 181 to rotate, and an output shaft of the fourth motor 183 coaxially and fixedly connected to a surface of the chain wheel 181 departing from the soil treatment box 1, wherein the outer side wall of the soil treatment box 1 facing the chain wheel 181 is provided with the chain 182.

When the staff starts the fourth motor 183, the fourth motor 183 drives one of the chain wheels 181 to rotate, and the other chain wheel 181 is driven to rotate by the chain 182, so that the two screw rods 17 are driven to rotate synchronously, the telescopic rods 15 on the two screw rods 17 are driven to move synchronously, and the extrusion rollers 13 roll on the screen 61 more smoothly.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a soil remediation preprocessing device which characterized in that: including soil processing case (1), soil processing case (1) top rigid coupling has rather than the income hopper (2) of inside intercommunication, by last soil crushing mechanism (4) that are used for the first breakage of soil that have set gradually under to in the soil processing case (1), be used for refining mechanism (5) and be used for sieving the sieve mechanism (6) that shakes of qualified soil to the soil of the soil after the first breakage once more, the bottom rigid coupling of soil processing case (1) has rather than discharging pipe (3) of inside intercommunication.

2. A soil remediation pretreatment device according to claim 1, wherein: the soil crushing mechanism (4) comprises two crushing rollers (41) horizontally arranged, each crushing roller (41) is rotatably connected to two inner walls opposite to the soil treatment box (1), a lower port of the feeding hopper (2) is located between the two crushing rollers (41), and a driving assembly (42) which drives the two crushing rollers (41) to rotate towards opposite directions is arranged on the outer side wall of the soil treatment box (1).

3. A soil remediation pretreatment device according to claim 1, wherein: the soil refining mechanism (5) comprises two horizontal crushing rollers (51), the crushing rollers (51) are arranged along the axial direction of the crushing rollers (41) and are rotatably connected to two opposite inner walls of the soil treatment box (1), the gap between the two crushing rollers (51) is smaller than the gap between the two crushing rollers (41), and a power assembly (52) for driving the two crushing rollers (51) to rotate towards the opposite direction is arranged on the outer side wall of the soil treatment box (1).

4. A soil remediation pretreatment device according to claim 3, wherein: the soil is handled the interior symmetry of case (1) and is provided with two deflector (11), and two deflector (11) are located soil crushing mechanism (4) and soil and refine between mechanism (5), and between directional two crushing roller (51) of a side of deflector (11), another side rigid coupling of deflector (11) is on the inner wall of case (1) is handled to soil, and the side that deflector (11) deviate from crushing roller (51) is higher than deflector (11) towards the side of crushing roller (51).

5. A soil remediation pretreatment device according to claim 4, wherein: a scraper (12) is arranged below each crushing roller (51), two ends of each scraper (12) are fixedly connected to the opposite inner walls of the soil treatment box (1), and the upper side surface of each scraper (12) abuts against the peripheral surface of each crushing roller (51).

6. A soil remediation pretreatment device according to claim 1, wherein: the vibrating screen mechanism (6) comprises a screen (61) which is horizontally arranged, two support plates (62) are arranged on the lower surface of the screen (61), the two support plates (62) are fixedly connected to the opposite inner walls of the soil treatment box (1) respectively, two connecting springs (63) are fixedly connected between each support plate (62) and the screen (61), and a control assembly (64) for driving the screen (61) to vibrate is arranged between each support plate (62) and the screen (61); the control assembly (64) comprises an eccentric disc (641) arranged above the support plate (62), the peripheral surface of the eccentric disc (641) is abutted against the lower surface of the screen (61), and a third motor (642) for driving the eccentric disc (641) to rotate is fixedly connected to the outer side wall of the soil treatment box (1).

7. A soil remediation pretreatment device according to claim 6, wherein: the upper surface of the screen mesh (61) is provided with a squeeze roller (13) for squeezing residual soil, the squeeze roller (13) is provided with a fixed rod (14) along the axis thereof in a penetrating way, both ends of the fixed rod (14) are fixedly connected with telescopic rods (15) with variable lengths, a mounting plate (16) fixedly connected on the inner wall of the soil treatment box (1) is arranged above each telescopic rod (15), the mounting plate (16) is arranged along the direction vertical to the squeeze roller (13), one surface of the mounting plate (16) facing the telescopic rods (15) is provided with a T-shaped sliding chute (161) along the length direction of the mounting plate (16), a sliding block (162) in sliding fit with the sliding block is arranged in the sliding chute (161), the sliding block (162) is fixedly connected at the upper end of the telescopic rod (15), each sliding chute (161) is rotatably connected with a screw rod (17) along the length direction thereof, the sliding block (162) is sleeved on, the end parts of the two screw rods (17) on the same side penetrate through the soil treatment box (1), and the penetrating ends of the screw rods (17) are provided with control components (18) for driving the sliding blocks (162) to move along the axial direction of the screw rods (17); the telescopic rod (15) comprises an extension rod (151) fixedly connected to the fixing rod (14), a sleeve (152) is sleeved on the upper end of the extension rod (151), the upper end of the sleeve (152) is sealed and fixedly connected with a sliding block (162), and a pressure spring (153) for pushing the extension rod (151) to move downwards is arranged in the sleeve (152).

8. A soil remediation pretreatment device according to claim 7, wherein: the control assembly (18) comprises two chain wheels (181) which are respectively and fixedly connected with the penetrating ends of the two screw rods (17), a chain (182) for realizing transmission between the two chain wheels (181) is wound on the two chain wheels (181), and a fourth motor (183) for driving the chain wheels (181) to rotate is fixedly connected onto the outer side wall of the soil treatment box (1) facing the chain wheels (181).