Integrated remediation device for contaminated soil

Abstract

The invention relates to the technical field of soil remediation, and discloses an integrated remediation device for contaminated soil, the integrated remediation device comprises an annular mounting base, the two ends of the annular mounting base are rotationally connected with a first rotating cylinder and a second rotating cylinder respectively, and a plurality of steam nozzles for heating soil are arranged at one end of the second rotating cylinder; a plurality of first flanged plates which are circumferentially distributed at equal intervals are fixed on the inner wall of the second rotating cylinder, and a screening seat is arranged in the second rotating cylinder; and a rotatable flapping plate, a movable extrusion plate and a crushing plate are arranged on the material screening seat, a plurality of first rolling blocks are fixed to the crushing plate, soil is preheated, turned over and crushed, so that the soil is in full contact with heat, the heating uniformity of the soil is improved, and the time needed for heating the soil is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and in particular to an integrated remediation device for contaminated soil. Background Art

[0002] Heavy metal pollution in soil mainly comes from the untreated discharge of waste residues, wastewater and waste gas from industrial and mining enterprises and chemical enterprises. The main pollutants are lead, arsenic, cadmium, zinc, mercury, etc. Heavy metal pollution in soil not only affects the quality of agricultural products, but also affects the quality of the atmosphere and water environment. At the same time, serious soil pollution has become the main factor restricting the sustainable development and utilization of land in urban areas. At present, the main methods for the treatment of heavy metal pollution in soil include leaching, soil washing, thermal desorption, etc. Among them, thermal desorption: by heating, pollutants in the soil are volatilized or decomposed, which is suitable for treating organic pollutants.

[0003] At present, when the remediation device heats the soil, it consumes high energy and has large heat loss. The soil is easy to clump during the heating process, and the device does not have the function of crushing the soil, which leads to a long soil heating time and wastes time, affecting the efficiency of soil pollution remediation. Summary of the invention

[0004] The present invention provides an integrated remediation device for contaminated soil, which has the beneficial effects of preheating, turning over and crushing the soil, so that the soil is fully in contact with the heat, improving the uniformity of soil heating, and reducing the time required for soil heating. It solves the problems mentioned in the above background technology that when heating the soil, the energy consumption is high, the heat loss is large, the soil is easy to agglomerate during the heating process, and the device does not have the function of crushing the soil, resulting in a long soil heating time and a waste of time, which affects the efficiency of soil pollution remediation.

[0005] The present invention provides the following technical solution: an integrated remediation device for contaminated soil, comprising an annular mounting seat, wherein two ends of the annular mounting seat are rotatably connected to a first rotating cylinder and a second rotating cylinder, one end of the second rotating cylinder is provided with a plurality of steam nozzles for heating the soil, a plurality of first folding plates equidistantly distributed around the circumference are fixed on the inner wall of the second rotating cylinder, and a sieving seat is provided inside the second rotating cylinder; A rotatable fanning plate, a movable extrusion plate and a crushing plate are respectively provided on the screening seat, a plurality of first crushing blocks are fixed on the crushing plate, a support frame for supporting the screening seat is fixed in the annular mounting seat, and a plurality of second folding plates equidistantly distributed around the circumference are fixed on the inner wall of the first rotating cylinder.

[0006] As an optional scheme of the integrated remediation device for contaminated soil described in the present invention, wherein: a first guide rod is fixed to one end of the screening seat, an L-shaped bracket is fixed to one end of the extrusion plate, the L-shaped bracket is slidably connected to the first guide rod through a first spring, the lower end of the L-shaped bracket is rotatably connected to a first interference rod, a first torsion spring is connected between the first interference rod and the L-shaped bracket, a second guide rod is fixed on the screening seat, the crushing plate is elastically connected to the second guide rod through a second spring, and a second interference rod is fixed to one end of the crushing plate.

[0007] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, wherein: a first contact head is provided in the first rotating cylinder, the first contact head is elastically connected to the support frame through a third spring, the support frame is provided with a mounting groove, a second contact head that interferes with the first contact head is provided in the mounting groove, the second contact head is elastically connected to the support frame through a fourth spring, and a first contact wedge that interferes with the second contact rod is fixed to the second contact head.

[0008] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, mounting blocks are respectively fixed at both ends of the screening seat, rotating columns are fixed at both ends of the fanning plate, the rotating columns are elastically connected to the mounting blocks through a second torsion spring, one end of the fanning plate is in contact with a third contact head, the third contact head is elastically connected to the support frame through a fifth spring, and the third contact head is in contact with one end of the second contact head.

[0009] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, a strip bracket and an adjustment component for adjusting the height of the strip bracket are provided above the screening seat, a guide column is fixed on the strip bracket, the guide column is slidably connected to the crushing plate, a sixth spring is connected between the strip bracket and the crushing plate, a plurality of second crushing blocks are fixed on one side of the strip bracket, and the second crushing blocks are located below the first crushing blocks.

[0010] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, the adjustment component includes a second interference wedge, the second interference wedge is fixed on the rotating column, and one side of the second interference wedge is in contact with a fourth interference head, a guide block is fixed to one end of the screening seat, the fourth interference head is elastically connected to the guide block through a seventh spring, and one end of the fourth interference head is in contact with one end of the strip bracket.

[0011] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, the adjustment component includes a plurality of equally spaced arc-shaped interference blocks, each of which is fixed on one end of the strip bracket, and a fifth interference head is fixed on one end of the screening seat, and the fifth interference head is located on one side of the arc-shaped interference block.

[0012] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, one end of the first rotating cylinder is rotatably connected to a first end cover, a feed trough is fixed on the first end cover, a support base is provided below the annular mounting seat, and the support base is fixedly connected to the first end cover.

[0013] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, one end of the second rotating cylinder is rotatably connected to a second end cover, the steam nozzle is fixed on the second end cover, the second end cover is fixedly connected to the support base, and a discharge trough is provided on the second end cover.

[0014] As an optional solution of the integrated remediation device for contaminated soil described in the present invention, a sealing cover plate is provided on the support frame, gear rings are fixed on the first rotating cylinder and the second rotating cylinder, gears are meshed and connected on the two gear rings, two servo motors are fixed on the annular mounting seat, and the motor shafts of the two servo motors are fixedly connected to the two gears.

[0015] The present invention has the following beneficial effects: 1. In the integrated remediation device for contaminated soil, high-temperature steam can be transported to the second rotating cylinder through the steam nozzle, so as to heat the soil and decompose the pollutants to achieve the purpose of soil remediation. The annular mounting seat is arranged to facilitate the rotation of the second rotating cylinder and the first rotating cylinder in different directions at a certain tilt angle, so that the heat in the second rotating cylinder can flow into the first rotating cylinder during the soil heating process to form a convection effect, accelerate the transfer of heat from the high-temperature area to the low-temperature area, reduce heat loss, and improve the efficiency of soil preheating treatment inside the first rotating cylinder. At the same time, the first rotating cylinder and the second rotating cylinder can drive the first folding plate and the second folding plate to rotate synchronously during the turning process, so as to achieve the purpose of turning the soil, so that the soil is fully in contact with the heat, improve the uniformity of soil heating, and reduce the time required for soil heating; When the first folding plate turns over the material and rotates, it may come into conflict with the first contact rod, which can indirectly drive the extrusion plate to slide on the sieving seat away from the crushing plate, so that the soil can be poured between the crushing plate and the extrusion plate. The first folding plate and the first contact rod are no longer in conflict, so that the extrusion plate moves horizontally on the sieving seat close to the crushing plate, which can break up the agglomerated soil to reduce its volume, and then flow through the sieve holes of the sieving seat into the second rotating cylinder to fully contact with high-temperature steam, further improving the effect of soil heating and repair and the efficiency of pollutant treatment. 2. In the integrated remediation device for contaminated soil, the crushing plate can move on the screening seat through the second guide rod. When the squeezing plate pushes the soil close to the crushing plate, the crushing plate drives the first crushing blocks to move synchronously, thereby crushing the agglomerated soil, reducing the volume, and further improving the heating effect and recovery efficiency of the soil; When the first rotating cylinder rotates, the second folding plate can be driven to rotate synchronously, so that the second folding plate can intermittently contact the first contact head. Through the cooperation of the second contact head, the first contact wedge block and the second contact rod, the crushing plate can reciprocate, thereby improving the effect of crushing the agglomerated soil. 3. In the integrated remediation device for contaminated soil, a fanning plate that can rotate on one side of the sifting seat can fan the soil when it falls onto the surface of the fanning plate, so that the soil can be fully contacted with the heat in the air, further improving the heating effect of the soil. When the second contact head reciprocates, it can achieve the purpose of reciprocating with the third contact head, so that when the first rotating cylinder rotates, the third contact head can continuously contact with the fanning plate, thereby improving the contact efficiency between the material and the air; 4. In the integrated remediation device for contaminated soil, a plurality of second crushing blocks can be fixed by means of a strip bracket slidably connected to the crushing plate. By adjusting the cooperation of the components, when the crushing plate moves horizontally, the second crushing blocks can be driven to move reciprocatingly up and down. With the cooperation of the fixed first crushing blocks, the agglomerated soil can be crushed again, thereby reducing the soil volume and further improving the heating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a structural cross-sectional view of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the first rotating cylinder of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the second rotating cylinder of the present invention.

[0020] Figure 5This is one of the structural schematic diagrams of the screening seat of the present invention.

[0021] Figure 6 This is the second structural schematic diagram of the screening seat of the present invention.

[0022] Figure 7 It is a schematic diagram of the structure of the regulating component of the present invention.

[0023] Figure 8 for Figure 5 A partial enlarged view of point A in the middle.

[0024] Fig. 9 for Figure 6 A partial enlarged view of point B in the middle.

[0025] In the figure: 1, annular mounting seat; 2, first torsion spring; 3, first rotating cylinder; 4, second rotating cylinder; 5, steam nozzle; 6, first folding plate; 7, screening seat; 71, second abutment wedge; 72, fourth abutment head; 73, guide block; 74, seventh spring; 75, arc abutment block; 76, fifth abutment head; 8, fan plate; 9, extrusion plate; 10, crushing plate; 11, support frame; 12, second folding plate; 13, first guide rod; 14, L-shaped bracket; 15, first spring; 16, first abutment rod; 17, second spring; 18, second guide rod; 19, first abutment head; 20, third spring; 21, mounting groove; 22, second abutment head; 23, fourth spring; 24, second abutment rod; 25, first abutment wedge block; 26, mounting block; 27, rotating column; 28, second torsion spring; 29, third abutment head; 30, fifth spring; 31, strip bracket; 32, guide column; 321, sixth spring; 33, second rolling block; 34, first rolling block; 35, first end cover; 36, feed trough; 37, support base; 38, second end cover; 39, discharge trough; 40, sealing cover plate; 41, gear ring; 42, gear; 43, servo motor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] For example, see Figures 1 to 9An integrated remediation device for contaminated soil comprises an annular mounting seat 1, two ends of which are rotatably connected to a first rotating cylinder 3 and a second rotating cylinder 4, one end of the second rotating cylinder 4 is provided with a plurality of steam nozzles 5 for heating the soil, a plurality of first folding plates 6 equidistantly distributed around the circumference are fixed on the inner wall of the second rotating cylinder 4, and a sieving seat 7 is provided inside the second rotating cylinder 4; A rotatable fanning plate 8, a movable extrusion plate 9 and a crushing plate 10 are respectively provided on the screening seat 7, a plurality of first crushing blocks 34 are fixed on the crushing plate 10, a support frame 11 for supporting the screening seat 7 is fixed in the annular mounting seat 1, and a plurality of second folding plates 12 equidistantly distributed around the circumference are fixed on the inner wall of the first rotating cylinder 3.

[0028] A first guide rod 13 is fixed to one end of the screening seat 7, an L-shaped bracket 14 is fixed to one end of the extrusion plate 9, the L-shaped bracket 14 is slidably connected to the first guide rod 13 through a first spring 15, the lower end of the L-shaped bracket 14 is rotatably connected to the first resistance rod 16, a first torsion spring 2 is connected between the first resistance rod 16 and the L-shaped bracket 14, a second guide rod 18 is fixed to the screening seat 7, the crushing plate 10 is elastically connected to the second guide rod 18 through a second spring 17, and a second resistance rod 24 is fixed to one end of the crushing plate 10.

[0029] One end of the first rotating cylinder 3 is rotatably connected to a first end cover 35 , a feed trough 36 is fixed on the first end cover 35 , and a support base 37 is provided below the annular mounting seat 1 , and the support base 37 is fixedly connected to the first end cover 35 .

[0030] One end of the second rotating drum 4 is rotatably connected to a second end cover 38 , the steam nozzle 5 is fixed on the second end cover 38 , the second end cover 38 is fixedly connected to the support base 37 , and a discharge chute 39 is provided on the second end cover 38 .

[0031] A sealing cover plate 40 is provided on the support frame 11, and gear rings 41 are fixed on the first rotating cylinder 3 and the second rotating cylinder 4. Gears 42 are meshed and connected to the two gear rings 41. Two servo motors 43 are fixed on the annular mounting seat 1, and the motor shafts of the two servo motors 43 are fixedly connected to the two gears 42.

[0032] When remediating soil, refer to Figure 1-Figure 6, start the two servo motors 43 fixed on the two annular mounting seats 1, and through the cooperation of the gear 42 and the gear ring 41, the first rotating cylinder 3 and the second rotating cylinder 4 are driven to rotate in different directions on the annular mounting seat 1. Through the cooperation of the supporting base 37, the second end cover 38 and the first end cover 35, the first rotating cylinder 3 and the second rotating cylinder 4 can rotate smoothly. The steam nozzle 5 fixed on the second end cover 38 is connected to the steam equipment, which can transport high-temperature steam to the second rotating cylinder 4. During the rotation process, the steam can form a convection effect, accelerate the transfer of heat from the high-temperature area to the low-temperature area, reduce heat loss, and thus flow into the first rotating cylinder 3. At the same time, the contaminated soil is put into the first rotating cylinder 3 through the feeding trough 36 on the first end cover 35 for preheating treatment. When the first rotating cylinder 3 rotates, it drives the second folding plate 12 to continuously turn the preheated soil so that it is fully in contact with the hot air, thereby improving the uniformity of soil heating; Since the first rotating cylinder 3 and the second rotating cylinder 4 are arranged at an angle, as the first rotating cylinder 3 is continuously turned over, the soil can flow into the second rotating cylinder 4 through the annular mounting seat 1 for high-temperature heating treatment. During the rotation of the second rotating cylinder 4, the first folding plate 6 is driven to rotate synchronously to turn the soil, so that the first folding plate 6 can push the first resistance rod 16 to move horizontally, so that the L-shaped bracket 14 slides on the first guide rod 13, the first spring 15 accumulates force, and the extrusion plate 9 moves on the screening seat 7 in the direction away from the crushing plate 10. During the turning process, some of the first folding plates 6 can move part of the soil. The soil is poured between the crushing plate 10 and the extrusion plate 9. When the first spring 15 stops storing force, the first resistance rod 16 continues to be stressed and deflects on the L-shaped bracket 14. The first torsion spring 2 stores force to achieve the purpose of releasing the conflict between the first resistance rod 16 and the first folding plate 6, so that the first spring 15 releases the elastic force, driving the extrusion plate 9 to move horizontally on the screening seat 7 close to the crushing plate 10, so that the agglomerated soil can be squeezed and crushed to reduce the volume, and flow through the sieve holes of the screening seat 7 into the second rotating cylinder 4 to fully contact with the high-temperature steam, thereby further improving the effect of soil heating and repair and the efficiency of pollutant treatment.

[0033] A heat-generating sealing cover plate 40 is disposed on the support frame 11 to prevent soil from falling into the installation groove 21 and affecting the operation of the second contact head 22 .

[0034] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figures 1 to 9A first contact head 19 is provided in the first rotating cylinder 3, and the first contact head 19 is elastically connected to the support frame 11 through a third spring 20. A mounting groove 21 is provided on the support frame 11, and a second contact head 22 that contacts the first contact head 19 is provided in the mounting groove 21. The second contact head 22 is elastically connected to the support frame 11 through a fourth spring 23, and a first contact wedge 25 that contacts the second contact rod 24 is fixed to the second contact head 22.

[0035] In order to further improve the crushing effect of agglomerated soil, refer to Figure 4-Figure 7 The first rotating cylinder 3 drives several second folding plates 12 to rotate synchronously, so as to achieve the purpose of intermittent contact between the second folding plates 12 and the first contact head 19. The third spring 20 continuously accumulates force and releases elastic force. One end of the first contact head 19 contacts with the second contact head 22 in the installation groove 21, so that the second contact head 22 drives the first contact wedge block 25 to move horizontally and synchronously. The fourth spring 23 accumulates force. During the movement of the first contact wedge block 25, it can contact with the second contact rod 24, so that the second contact rod 24 drives the crushing plate 10 to reciprocate the second guide rod 18 fixed on the screening seat 7. The second spring 17 continuously accumulates force and releases elastic force, so that the crushing plate 10 drives several first crushing blocks 34 to reciprocate synchronously, which can achieve the purpose of crushing the agglomerated soil, reduce the soil volume, and further improve the soil heating effect and soil repair efficiency.

[0036] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figures 1 to 9 , mounting blocks 26 are fixed at both ends of the screening seat 7, and rotating columns 27 are fixed at both ends of the fanning plate 8. The rotating column 27 is elastically connected to the mounting block 26 through a second torsion spring 28. One end of the fanning plate 8 is in contact with a third contact head 29, and the third contact head 29 is elastically connected to the support frame 11 through a fifth spring 30. The third contact head 29 is in contact with one end of the second contact head 22.

[0037] A strip bracket 31 and an adjustment component for adjusting the height of the strip bracket 31 are provided above the screening seat 7, a guide column 32 is fixed on the strip bracket 31, the guide column 32 is slidably connected to the crushing plate 10, a sixth spring 321 is connected between the strip bracket 31 and the crushing plate 10, a plurality of second crushing blocks 33 are fixed on one side of the strip bracket 31, and the second crushing blocks 33 are located below the first crushing blocks 34.

[0038] The adjusting assembly includes a second contact wedge 71, which is fixed on the rotating column 27, and one side of the second contact wedge 71 is in contact with a fourth contact head 72, one end of the screening seat 7 is fixed with a guide block 73, the fourth contact head 72 is elastically connected to the guide block 73 through a seventh spring 74, and one end of the fourth contact head 72 is in contact with one end of the strip bracket 31.

[0039] In order to make the soil fully contact with the heat in the air and further improve the heating effect of the soil, the second contact head 22 contacts the third contact head 29 when it moves, and the third contact head 29 moves horizontally. The fifth spring 30 accumulates force, and the moving third contact head 29 contacts the movement of the fan plate 8, so that the rotating column 27 fixed at the end of the fan plate 8 can rotate on the mounting block 26, and the second torsion spring 28 accumulates force. During the rotation of the fan plate 8, the soil on the surface can be fanned, so that the soil is lifted up and fully contacted with the heat in the air, and the heating effect of the soil is further improved. During the rotation of the rotating column 27, the second contact wedge block 71 can be driven to deflect, so that the second contact wedge block 71 contacts the fourth contact head 72. The fourth contact head 72 slides on the guide block 73, and the seventh spring 74 accumulates force. During the movement of the fourth contact head 72, the purpose of abutting against one end of the strip bracket 31 can be achieved, prompting the strip bracket 31 to drive the plurality of second crushing blocks 33 to move upward. At the same time, the guide column 32 slides on the crushing plate 10, and the sixth spring 321 accumulates force, so that when the crushing plate 10 moves horizontally, the second crushing block 33 can move back and forth up and down. When the agglomerated soil falls between the first crushing block 34 and the second crushing block 33, with the cooperation of the plurality of first crushing blocks 34 fixed on the crushing plate 10, the moving second crushing block 33 can crush the agglomerated soil again, thereby reducing the soil volume and further improving the heating effect.

[0040] Embodiment 4: This embodiment is an improvement made on the basis of Embodiment 3. For details, please refer to Figures 1 to 9 The adjustment component also includes a technical solution, which includes a plurality of equally spaced arc-shaped contact blocks 75, each of which is fixed on one end of the strip bracket 31, and a fifth contact head 76 is fixed on one end of the screening seat 7, and the fifth contact head 76 is located on one side of the arc-shaped contact block 75.

[0041] The fifth contact head 76 fixed on the screening seat 7 remains in place, and when the crushing plate 10 moves, it can drive the strip bracket 31 to move synchronously, prompting the several arc-shaped contact blocks 75 fixed on the strip bracket 31 to actively and intermittently contact with the fifth contact head 76, so that the strip bracket 31 can drive the second crushing block 33 to reciprocate up and down, thereby achieving the purpose of secondary crushing of the soil that falls into the clumps between the second crushing block 33 and the first crushing block 34.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An integrated remediation device for contaminated soil, comprising an annular mounting seat (1), characterized in that: The two ends of the annular mounting seat (1) are rotatably connected to a first rotating cylinder (3) and a second rotating cylinder (4), one end of the second rotating cylinder (4) is provided with a plurality of steam nozzles (5) for heating the soil, a plurality of first folding plates (6) equidistantly distributed around the circumference are fixed to the inner wall of the second rotating cylinder (4), and a screening seat (7) is provided inside the second rotating cylinder (4); The screening seat (7) is provided with a rotatable fanning plate (8), a movable squeezing plate (9) and a crushing plate (10), respectively; a plurality of first crushing blocks (34) are fixed on the crushing plate (10); a support frame (11) for supporting the screening seat (7) is fixed in the annular mounting seat (1); and a plurality of second folding plates (12) equidistantly distributed around the circumference are fixed on the inner wall of the first rotating cylinder (3).

2. The integrated remediation device for contaminated soil according to claim 1, characterized in that: A first guide rod (13) is fixed to one end of the screening seat (7), an L-shaped bracket (14) is fixed to one end of the extrusion plate (9), the L-shaped bracket (14) is slidably connected to the first guide rod (13) via a first spring (15), a first resistance rod (16) is rotatably connected to the lower end of the L-shaped bracket (14), a first torsion spring (2) is connected between the first resistance rod (16) and the L-shaped bracket (14), a second guide rod (18) is fixed to the screening seat (7), the crushing plate (10) is elastically connected to the second guide rod (18) via a second spring (17), and a second resistance rod (24) is fixed to one end of the crushing plate (10).

3. The integrated remediation device for contaminated soil according to claim 2, characterized in that: A first contact head (19) is arranged in the first rotating cylinder (3), and the first contact head (19) is elastically connected to the support frame (11) via a third spring (20). The support frame (11) is provided with a mounting groove (21), and a second contact head (22) is arranged in the mounting groove (21) to contact the first contact head (19). The second contact head (22) is elastically connected to the support frame (11) via a fourth spring (23), and a first contact wedge (25) is fixed to the second contact head (22) to contact the second contact rod (24).

4. The integrated remediation device for contaminated soil according to claim 3, characterized in that: Mounting blocks (26) are fixed to both ends of the screening seat (7), rotating columns (27) are fixed to both ends of the fan plate (8), the rotating columns (27) are elastically connected to the mounting blocks (26) via a second torsion spring (28), one end of the fan plate (8) abuts against a third contact head (29), the third contact head (29) is elastically connected to the support frame (11) via a fifth spring (30), and the third contact head (29) abuts against one end of the second contact head (22).

5. The integrated remediation device for contaminated soil according to claim 4, characterized in that: A strip support (31) and an adjustment component for adjusting the height of the strip support (31) are provided above the screening seat (7); a guide column (32) is fixed on the strip support (31); the guide column (32) is slidably connected to the crushing plate (10); a sixth spring (321) is connected between the strip support (31) and the crushing plate (10); a plurality of second crushing blocks (33) are fixed on one side of the strip support (31); the second crushing blocks (33) are located below the first crushing blocks (34).

6. The integrated remediation device for contaminated soil according to claim 5, characterized in that: The adjustment assembly comprises a second abutting wedge (71), the second abutting wedge (71) being fixed on the rotating column (27), and one side of the second abutting wedge (71) abuts against a fourth abutting head (72), one end of the screening seat (7) being fixed with a guide block (73), the fourth abutting head (72) being elastically connected to the guide block (73) via a seventh spring (74), and one end of the fourth abutting head (72) abuts against one end of the strip bracket (31).

7. The integrated remediation device for contaminated soil according to claim 5, characterized in that: The adjustment assembly comprises a plurality of equally spaced arc-shaped contact blocks (75), each of which is fixed to one end of the strip-shaped bracket (31); a fifth contact head (76) is fixed to one end of the screening seat (7), and the fifth contact head (76) is located on one side of the arc-shaped contact block (75).

8. The integrated remediation device for contaminated soil according to claim 7, characterized in that: One end of the first rotating cylinder (3) is rotatably connected to a first end cover (35), a feed trough (36) is fixed on the first end cover (35), and a support base (37) is provided below the annular mounting seat (1), the support base (37) being fixedly connected to the first end cover (35).

9. The integrated remediation device for contaminated soil according to claim 8, characterized in that: One end of the second rotating drum (4) is rotatably connected to a second end cover (38), the steam nozzle (5) is fixed on the second end cover (38), the second end cover (38) is fixedly connected to the support base (37), and a discharge trough (39) is provided on the second end cover (38).

10. The integrated remediation device for contaminated soil according to claim 1, characterized in that: A sealing cover plate (40) is provided on the support frame (11), a gear ring (41) is fixed on each of the first rotating cylinder (3) and the second rotating cylinder (4), a gear (42) is meshedly connected to each of the two gear rings (41), two servo motors (43) are fixed on the annular mounting seat (1), and the motor shafts of the two servo motors (43) are fixedly connected to the two gears (42).

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