Contaminated soil pyrolysis remediation device

Abstract

The utility model discloses a polluted soil pyrolysis remediation device, which belongs to the technical field of polluted soil pyrolysis remediation, and comprises a bottom plate, two support frames are fixedly connected to the top surface of the bottom plate, a pyrolysis box is rotatably connected between the two support frames, a jacking mechanism is arranged between the pyrolysis box and the bottom plate, and the top surface of the bottom plate is fixedly connected with the two support frames. And a sealing door is hinged to one end of the pyrolysis box. According to the device disclosed by the utility model, after polluted soil is put into the pyrolysis box, the two servo motors are used for driving the two groups of stirring shafts, stirring rods and scraping plates to stir the polluted soil in opposite directions, and the soil is mixed at the junction of the two arc-shaped grooves, so that the soil in the pyrolysis box can be completely stirred; in addition, after steam is guided into the pyrolysis box from an air inlet hole in the lower portion of the air inlet box, the soil can make complete contact with the steam, and the pyrolysis effect and efficiency are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis remediation of contaminated soil, and more specifically, to a pyrolysis remediation device for contaminated soil. Background Art

[0002] With the acceleration of economic development and urbanization, the site pollution caused by industrial and mining enterprises is also very serious. Soil is an important material basis for human social production activities, an indispensable and difficult-to-regenerate natural resource. Once large-scale outbreaks occur in untreated polluted sites, it will have an inestimable impact on the sustainable development of the country. Therefore, attention must be paid to the prevention of soil pollution and the remediation of contaminated soil.

[0003] After retrieval, the utility model patent with the publication number of CN211538957U discloses a pyrolysis remediation device for pollutants in contaminated soil, including a box body and a box cover. An open mouth is provided on the top surface of the box body, and the open mouth of the box body is hermetically connected with the box cover through a sealing ring. An exhaust port is provided in the middle of the top surface of the box cover, and an annular pipe is arranged above the box cover. The bottom surface of the annular pipe is connected with a steam conduit in a penetrating manner; in this patent, by starting the motor, the output end of the motor drives the stirring paddle to rotate, thereby disturbing the soil in the box body. And by introducing hot steam into the annular pipe through the steam inlet pipe, and then introducing it into the soil in the box body through a plurality of steam conduits that penetrate and surround the bottom surface of the annular pipe, and cooperating with the side pipes on the side surfaces of the plurality of steam conduits, the hot steam is uniformly introduced into the soil in a split-flow manner, and then cooperating with the disturbance of the stirring paddle, the heat absorption efficiency of the soil can be increased, so as to accelerate the pyrolysis separation of pollutants in the soil and ensure the remediation efficiency of the soil.

[0004] However, the above patent still has the following deficiencies: the position of the stirring paddle is fixed, which is not convenient for stirring the soil on the side of the box body, and the pyrolysis remediation effect is poor; it is also not convenient for discharging the soil after pyrolysis remediation. For this reason, we propose a pyrolysis remediation device for contaminated soil. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a pyrolysis remediation device for contaminated soil.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] A pyrolysis and remediation device for contaminated soil, comprising a bottom plate. Two support frames are fixedly connected to the top surface of the bottom plate. A pyrolysis box is rotatably connected between the two support frames. A jacking mechanism is arranged between the pyrolysis box and the bottom plate. One end of the pyrolysis box is hinged with a sealing door. A steam introduction mechanism is arranged at the top of the pyrolysis box. Two arc-shaped grooves are arranged at the bottom of the inner cavity of the pyrolysis box. Two servo motors are fixedly installed at the other end of the pyrolysis box. The output shafts of the two servo motors respectively extend into the inner cavities of the arc-shaped grooves and are fixedly connected with stirring shafts. Multiple groups of stirring rods are respectively fixedly connected to the sides of the two stirring shafts. The ends of multiple groups of stirring rods are fixedly connected with scraping plates. The ends of the scraping plates are in contact with the inner walls of the arc-shaped grooves.

[0008] As a preferred solution of the present utility model, the jacking mechanism includes two electric push rods fixedly installed on the top surface of the bottom plate and a support seat fixedly connected to the bottom surface of the pyrolysis box. A chute is arranged on the side of the support seat. The top ends of the two electric push rods are respectively fixedly connected with support blocks. A sliding column is fixedly sleeved between the two support blocks. The sliding column penetrates through the inner cavity of the chute.

[0009] As a preferred solution of the present utility model, the steam introduction mechanism includes an air inlet box fixedly sleeved on the top of the pyrolysis box. Multiple air inlet holes are arranged on the bottom surface of the air inlet box. An air extraction pump is fixedly installed on the top surface of the air inlet box. The output end of the air extraction pump is fixedly connected with an air inlet pipe. The end of the air inlet pipe is fixedly sleeved into the inner cavity of the air inlet box. The input end of the air extraction pump is fixedly connected with an air extraction pipe.

[0010] As a preferred solution of the present utility model, a feed pipe is fixedly sleeved on the top of the pyrolysis box. A sealing plate is hinged to the top end of the feed pipe. An exhaust pipe is fixedly sleeved at the end of the pyrolysis box.

[0011] As a preferred solution of the present utility model, a control panel is fixedly installed on the outside of one of the support frames.

[0012] As a preferred solution of the present utility model, the outer side surface of the sliding column is in contact with the inner wall of the chute.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] (1) In the present utility model, after the contaminated soil is put into the pyrolysis box, two servo motors are used to drive two groups of stirring shafts, stirring rods and scraping plates to stir the contaminated soil in opposite directions, and the soil is mixed at the intersection of the two arc-shaped grooves, ensuring that the soil in the pyrolysis box can be completely stirred; when steam is introduced into the pyrolysis box through the air inlet holes below the air inlet box, the soil and steam can be in full contact, ensuring the pyrolysis effect and efficiency.

[0015] (2) In this utility model, the pyrolysis box is supported by the support frame and the lifting mechanism. When it is necessary to discharge the soil from the pyrolysis box after pyrolysis, the electric push rod is used to drive the sliding column to move upward, and the support seat and the pyrolysis box are pushed through the sliding column. At this time, the pyrolysis box rotates, so that the soil is discharged from the end of the pyrolysis box, realizing the function of conveniently taking out the pyrolyzed soil from the pyrolysis box, and having good practicability. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 It is a schematic cross-sectional view of this utility model;

[0018] Figure 3 It is a schematic cross-sectional view of the pyrolysis box of this utility model;

[0019] Figure 4 It is a schematic cross-sectional view of the air inlet box of this utility model.

[0020] Explanation of the reference numerals in the drawings:

[0021] 1. Bottom plate; 2. Lifting mechanism; 3. Support frame; 4. Pyrolysis box; 5. Steam introduction mechanism; 6. Arc-shaped groove; 7. Servo motor; 8. Stirring shaft; 9. Stirring rod; 10. Scraper; 11. Sealing door; 12. Electric push rod; 13. Support seat; 14. Chute; 15. Support block; 16. Sliding column; 17. Feed pipe; 18. Sealing plate; 19. Air inlet box; 20. Air inlet hole; 21. Exhaust pump; 22. Air inlet pipe; 23. Exhaust pipe; 24. Control panel; 25. Exhaust pipe. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figures 1-4 , a contaminated soil pyrolysis and remediation device, including a bottom plate 1, two support frames 3 are fixedly connected to the top surface of the bottom plate 1, a pyrolysis tank 4 is rotatably connected between the two support frames 3, a jacking mechanism 2 is arranged between the pyrolysis tank 4 and the bottom plate 1, a sealing door 11 is hinged to one end of the pyrolysis tank 4, a steam introduction mechanism 5 is arranged at the top of the pyrolysis tank 4, two arc-shaped grooves 6 are arranged at the bottom of the inner cavity of the pyrolysis tank 4, two servo motors 7 are fixedly installed at the other end of the pyrolysis tank 4, the output shafts of the two servo motors 7 respectively extend into the inner cavity of the arc-shaped groove 6 and are fixedly connected with stirring shafts 8, multiple groups of stirring rods 9 are respectively fixedly connected to the sides of the two stirring shafts 8, a scraper 10 is fixedly connected to the ends of the multiple groups of stirring rods 9, and the end of the scraper 10 is in contact with the inner wall of the arc-shaped groove 6.

[0027] Specifically, please refer to Figure 1 , the jacking mechanism 2 includes two electric push rods 12 fixedly installed on the top surface of the bottom plate 1 and a support seat 13 fixedly connected to the bottom surface of the pyrolysis tank 4. A chute 14 is opened on the side of the support seat 13. The tops of the two electric push rods 12 are respectively fixedly connected with support blocks 15, and a sliding column 16 is fixedly sleeved between the two support blocks 15. The sliding column 16 penetrates through the inner cavity of the chute 14.

[0028] In this embodiment, the pyrolysis tank 4 is supported by the electric push rods 12, the support blocks 15, the sliding column 16 and the support seat 13, so that the pyrolysis tank 4 is in a horizontal state.

[0029] Specifically, please refer to Figure 1 and Figure 4 , the steam introduction mechanism 5 includes an air inlet box 19 fixedly sleeved on the top of the pyrolysis tank 4. A plurality of air inlet holes 20 are opened on the bottom surface of the air inlet box 19. An air extraction pump 21 is fixedly installed on the top surface of the air inlet box 19. The output end of the air extraction pump 21 is fixedly connected with an air inlet pipe 22. The end of the air inlet pipe 22 is fixedly sleeved into the inner cavity of the air inlet box 19. The input end of the air extraction pump 21 is fixedly connected with an air extraction pipe 23.

[0030] In this embodiment, the end of the air extraction pipe 23 is connected to an external steam device, so as to introduce steam into the air inlet box 19.

[0031] Specifically, please refer to Figure 1 and Figure 2 , a feed pipe 17 is fixedly sleeved on the top of the pyrolysis box 4, a sealing plate 18 is hinged to the top end of the feed pipe 17, and an exhaust pipe 25 is fixedly sleeved on the end of the pyrolysis box 4.

[0032] In this embodiment, the contaminated soil is put into the pyrolysis box 4 through the feed pipe 17. In addition, the waste gas generated by pyrolysis is discharged through the exhaust pipe 25, and at the same time, the waste gas discharged from the exhaust pipe 25 can be purified.

[0033] Specifically, please refer to Figure 1 , a control panel 24 is fixedly installed on the outer side of a support frame 3.

[0034] In this embodiment, the control panel 24 is electrically connected to the servo motor 7, the electric push rod 12, and the air extraction pump 21 respectively, and the control panel 24 is used to control the servo motor 7, the electric push rod 12, and the air extraction pump 21.

[0035] Specifically, please refer to Figure 1 , the outer side surface of the sliding column 16 fits with the inner wall of the sliding groove 14.

[0036] In this embodiment, the stability of the sliding column 16 located in the inner cavity of the sliding groove 14 is ensured.

[0037] Working principle: When in use, first put the contaminated soil to be pyrolytically repaired into the inner cavity of the pyrolysis box 4 from the feed pipe 17, then start two servo motors 7 to drive two groups of stirring shafts 8, stirring rods 9 and scraping plates 10 to stir the contaminated soil in opposite directions, and at the same time make the soil mix at the intersection of the two arc-shaped grooves 6. In addition, start the air extraction pump 21 to pump the steam in the external device into the air inlet box 19, and spray the steam into the inner cavity of the pyrolysis box 4 through the air inlet holes 20 below the air inlet box 19, and use the heat of the steam to pyrolytically separate the pollutants in the soil. The waste gas generated by pyrolysis is discharged from the exhaust pipe 25. Finally, after pyrolysis, open the sealing door 11, start the electric push rod 12 to drive the support block 15 and the sliding column 16 to move upward. At this time, the sliding column 16 slides in the sliding groove 14, and the support seat 13 and the pyrolysis box 4 are pushed through the sliding column 16, so that the pyrolysis box 4 rotates, and then the soil in the pyrolysis box 4 is poured out, and that's it.

[0038] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. A contaminated soil pyrolysis remediation device, comprising a bottom plate (1), characterized in that: Two support frames (3) are fixedly connected to the top surface of the bottom plate (1), a pyrolysis box (4) is rotatably connected between the two support frames (3), a lifting mechanism (2) is arranged between the pyrolysis box (4) and the bottom plate (1), a sealing door (11) is hingedly connected to one end of the pyrolysis box (4), a steam introduction mechanism (5) is arranged on the top of the pyrolysis box (4), two arc-shaped grooves (6) are arranged at the bottom of the inner cavity of the pyrolysis box (4), two servo motors (7) are fixedly installed on the other end of the pyrolysis box (4), the output shafts of the two servo motors (7) respectively extend to the inner cavity of the arc-shaped groove (6) and are fixedly connected to a stirring shaft (8), and multiple groups of stirring rods (9) are fixedly connected to the sides of the two stirring shafts (8), and the ends of the multiple groups of stirring rods (9) are fixedly connected to scrapers (10), and the ends of the scrapers (10) are in contact with the inner wall of the arc-shaped groove (6).

2. The contaminated soil pyrolysis remediation device according to claim 1, characterized in that: The lifting mechanism (2) comprises two electric push rods (12) fixedly mounted on the top surface of the base plate (1) and a support seat (13) fixedly connected to the bottom surface of the pyrolysis box (4); a slide groove (14) is provided on the side of the support seat (13); the top ends of the two electric push rods (12) are respectively fixedly connected to support blocks (15); a slide column (16) is fixedly sleeved between the two support blocks (15); and the slide column (16) passes through the inner cavity of the slide groove (14).

3. The contaminated soil pyrolysis remediation device according to claim 1, characterized in that: The steam introduction mechanism (5) comprises an air intake box (19) fixedly sleeved on the top of the pyrolysis box (4), a plurality of air intake holes (20) being provided on the bottom surface of the air intake box (19), an air extraction pump (21) being fixedly installed on the top surface of the air intake box (19), an output end of the air extraction pump (21) being fixedly connected to an air intake pipe (22), an end of the air intake pipe (22) being fixedly sleeved to the inner cavity of the air intake box (19), and an input end of the air extraction pump (21) being fixedly connected to an air extraction pipe (23).

4. The contaminated soil pyrolysis remediation device according to claim 1, characterized in that: A feed pipe (17) is fixedly sleeved on the top of the pyrolysis box (4), a sealing plate (18) is hinged on the top of the feed pipe (17), and an exhaust pipe (25) is fixedly sleeved on the end of the pyrolysis box (4).

5. The contaminated soil pyrolysis remediation device according to claim 1, characterized in that: A control panel (24) is fixedly mounted on the outer side of the support frame (3).

6. The contaminated soil pyrolysis remediation device according to claim 2, characterized in that: The outer side surface of the slide column (16) is in contact with the inner wall of the slide groove (14).

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