Heavy metal contaminated soil remediation device

Abstract

The utility model discloses a heavy metal contaminated soil remediation device, belonging to the field of soil remediation technology. The heavy metal contaminated soil remediation device comprises a frame and a conveyor belt, a hopper and a spray mechanism are arranged above the conveyor belt, and the spray mechanism comprises a connecting frame slidably arranged between two brackets; a spray pipe is arranged below the connecting frame, and a spray head is arranged on the spray pipe; a driving mechanism is arranged above the connecting frame, and the driving mechanism comprises a motor 1 and a connecting rod with one end arranged on the output shaft of the motor 1, and the other end of the connecting rod is connected to the connecting frame through a roller 1. The utility model integrates the crushing and spraying of heavy metal contaminated soil, which not only saves labor and facilitates the operation of the staff, but also can effectively repair the heavy metal contaminated soil.

Description

Technical Field

[0001] The utility model relates to the technical field of soil remediation, in particular to a heavy metal polluted soil remediation device. Background Art

[0002] Heavy metal pollution in soil has posed a threat to the ecological environment, food safety and sustainable agricultural development. Since heavy metal pollution in soil is long-term, hidden and irreversible, it is difficult to control once it is contaminated. In addition, heavy metals are easily accumulated in crops and enter the human body through the food chain, causing various diseases and ultimately endangering human health. In order to improve the efficiency of heavy metal pollution in the soil, it is necessary to conduct a comprehensive analysis and research on the relevant soil remediation technology. The patent document "A Circulating Chemical Leaching Soil Remediation System and Its Remediation Method" with the authorization announcement number CN110052490B points out that the remediation technologies for heavy metal contaminated soil mainly include physical remediation methods, chemical leaching, and plant remediation.

[0003] The chemical leaching remediation method pointed out in the above-mentioned document can not only be used for in-situ remediation, but also for off-site remediation, and has the advantages of stable treatment effect and flexible use. At present, most chemical leaching methods use remediation liquid spraying equipment to effectively remediate contaminated soil, thereby effectively removing heavy metal elements such as zinc, lead, and chromium from the contaminated soil. However, in the prior art, the remediation liquid and the contaminated soil cannot be evenly and effectively mixed in the remediation liquid spraying equipment, and the remediation quality of the heavy metal contaminated soil is difficult to guarantee, which invisibly increases the workload of the personnel and causes the use efficiency of the heavy metal contaminated soil remediation device to be low. Therefore, it is very necessary to provide a new type of heavy metal contaminated soil remediation device. Utility Model Content

[0004] The utility model aims to solve the problem that the remediation liquid and the heavy metal contaminated soil in the remediation liquid spraying equipment in the prior art cannot be evenly, effectively and fully mixed, resulting in the contaminated soil remediation failing to meet the standards, and proposes a heavy metal contaminated soil remediation device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A heavy metal contaminated soil remediation device comprises a frame and a conveyor belt, a hopper and a spray mechanism are arranged above the conveyor belt, and the spray mechanism comprises a connecting frame slidably arranged between two brackets;

[0007] A spray pipe is provided below the connecting frame, and a spray head is provided on the spray pipe;

[0008] A driving mechanism is arranged above the connecting frame, and the driving mechanism comprises a motor 1 and a connecting rod with one end arranged on the output shaft of the motor 1, and the other end of the connecting rod is connected to the connecting frame through a roller 1.

[0009] In some embodiments, the connecting frame includes two horizontal plates symmetrically arranged above the spray pipe and two vertical plates located between the two horizontal plates. The spray pipe is installed on the horizontal plates. The horizontal plates are slidably connected to the bracket, and the roller 1 is located between the two vertical plates.

[0010] In some embodiments, the spray pipe is an n-type structure, and a plurality of nozzles facing the conveyor belt are arranged on the top and side walls of the spray pipe; a liquid inlet pipe is connected to the upper end of the spray pipe, and the liquid inlet pipe passes through one of the horizontal plates. A hose is connected to the top of the liquid inlet pipe through a flange, and one end of the hose is connected to a tank storing the repair liquid.

[0011] In some embodiments, a shell connected to the hopper is provided above the hopper, and a group of baffle plates are installed on the left end face and the right end face of the shell. The two groups of baffle plates are both inclined on the inner wall of the shell and are cross-arranged. During the process of pouring heavy metal contaminated soil into the shell, the baffle plates can slow down the feeding speed to avoid soil accumulation caused by too fast feeding speed, which affects the crushing efficiency.

[0012] In some embodiments, the inner wall of the hopper is rotatably connected to two symmetrically distributed crushing rollers, and a central axis is passed through the center of the crushing roller. One end of one of the central axis passes through the hopper and is connected to motor 2, and the other end passes through the hopper and is connected to gear 1; one end of the other central axis passes through the hopper and is connected to gear 2 meshing with gear 1. Motor 1 drives one of the central axis to rotate, thereby driving one of the crushing rollers to rotate. At the same time, gear 1 drives gear 2 to rotate, and then drives the crushing roller on the other central axis to rotate. The two crushing rollers rotate in opposite directions to achieve the crushing of heavy metal contaminated soil.

[0013] In some embodiments, a scraper assembly is provided on the inner wall of the hopper, and the scraper assembly includes a rotating shaft and a scraper arranged on the rotating shaft. Both ends of the rotating shaft are sleeved with torsion springs, and the two ends of the torsion spring are respectively connected to the scraper and the hopper. A brush is provided on the side of the scraper close to the crushing roller. The brush arranged on the scraper can scrape off the soil remaining on the surface of the crushing roller, so as to avoid the problem of soil residue covering the crushing area and affecting its crushing effect.

[0014] In some embodiments, a collection box is provided at the end of the conveyor belt to collect the heavy metal contaminated soil discharged from the conveyor belt that has fully reacted with the remediation solution.

[0015] In some embodiments, two rollers 2 are respectively installed on one side of each of the horizontal plates close to the bracket, and the rollers 2 are slidably arranged in a groove provided on the bracket, thereby effectively reducing the probability of the spray mechanism getting stuck.

[0016] Compared with the prior art, the utility model provides a heavy metal contaminated soil remediation device, which has the following beneficial effects:

[0017] 1. The utility model is provided with a spray mechanism and a driving mechanism. The spray pipe in the spray mechanism is an n-type structure. The top and side walls of the spray pipe are provided with a plurality of nozzles facing the conveyor belt, which can spray the repair liquid on the middle and both sides of the conveyor belt to effectively cover the heavy metal contaminated soil. At the same time, the motor in the driving mechanism drives the connecting rod to rotate, and the roller at one end of the connecting rod drives the connecting frame to reciprocate along the bracket, so that the nozzle on the spray pipe can reciprocate and circulate the contaminated soil conveyed forward on the conveyor belt to spray the repair liquid, so that the repair liquid and the heavy metal contaminated soil are fully and efficiently mixed, thereby ensuring the repair quality.

[0018] 2. The utility model installs two rollers 2 on the horizontal plate, and the rollers 2 are slidably arranged in the grooves provided on the bracket. Through the above arrangement, the rollers 2 are arranged to slide on the bracket, which effectively reduces the probability of jamming of the spray mechanism.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model integrates the crushing and spraying of heavy metal contaminated soil, which not only saves labor and facilitates the operation of the staff, but also can effectively repair the heavy metal contaminated soil.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of a heavy metal contaminated soil remediation device of the utility model.

[0022] Figure 2 This utility model is a heavy metal contaminated soil repair device Figure 1 Cross-sectional view at AA in the middle.

[0023] Figure 3 The utility model is a schematic diagram of the installation of a spray mechanism and a driving mechanism in a heavy metal contaminated soil remediation device.

[0024] Figure 4The utility model is a schematic diagram of the interior of a hopper and a shell in a heavy metal contaminated soil remediation device.

[0025] Figure 5 This utility model is a heavy metal contaminated soil repair device Figure 4 Schematic diagram of P direction in .

[0026] The reference numerals in the accompanying drawings are:

[0027] 1. Frame; 2. Conveyor belt; 3. Hopper; 4. Bracket; 5. Connecting frame; 501. Horizontal plate; 502. Vertical plate; 6. Spray pipe; 7. Nozzle; 8. Liquid inlet pipe; 9. Motor 1; 10. Connecting rod; 11. Roller 1; 12. Shell; 13. Material baffle; 14. Crushing roller; 15. Center shaft; 16. Motor 2; 17. Gear 1; 18. Gear 2; 19. Rotating shaft; 20. Scraper; 21. Torsion spring; 22. Brush; 23. Collection box; 24. Hose; 25. Roller 2. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Reference Figure 1-Figure 5 A heavy metal contaminated soil remediation device comprises a frame 1 and a conveyor belt 2, a hopper 3 and a spray mechanism are arranged above the conveyor belt 2, the spray mechanism comprises a connecting frame 5 slidably arranged between two brackets 4; a spray pipe 6 is arranged below the connecting frame 5, and a nozzle 7 is arranged on the spray pipe 6; a driving mechanism is arranged above the connecting frame 5, the driving mechanism comprises a motor 9 and a connecting rod 10 at one end of which is arranged on the output shaft of the motor 9, and the other end of the connecting rod 10 is connected to the connecting frame 5 through a roller 11.

[0030] Specifically, the connecting frame 5 includes two horizontal plates 501 symmetrically arranged above the spray pipe 6 and two vertical plates 502 located between the two horizontal plates 501 , the spray pipe 6 is installed on the horizontal plates 501 , the horizontal plates 501 are slidably connected to the bracket 4 , and the roller 11 is located between the two vertical plates 502 .

[0031] In this embodiment, the spray pipe 6 is an n-type structure, and the top and side walls of the spray pipe 6 are provided with multiple nozzles 7 facing the conveyor belt 2, which can spray the repair liquid on the middle and both sides of the conveyor belt 2, effectively covering the heavy metal contaminated soil; the upper end of the spray pipe 6 is connected to a liquid inlet pipe 8, and the liquid inlet pipe 8 passes through one of the horizontal plates 501. The top of the liquid inlet pipe 8 is connected to a hose 24 through a flange, and one end of the hose is connected to a tank storing the repair liquid.

[0032] Please refer again Figure 4 A shell body 12 connected to the hopper 3 is arranged above the hopper 3, and a set of baffle plates 13 are installed on the left end face and the right end face of the shell body 12. The two sets of baffle plates 13 are both inclinedly arranged on the inner wall of the shell body 12, and the two sets of baffle plates 13 are cross-arranged. When the heavy metal contaminated soil is poured into the shell, the baffle plates can slow down the feeding speed to avoid soil accumulation caused by too fast feeding speed, which affects the crushing efficiency.

[0033] Please refer again Figure 5 The inner wall of the hopper 3 is rotatably connected to two symmetrically distributed crushing rollers 14, and a central shaft 15 is passed through the center of the crushing roller 14. One end of one central shaft 15 passes through the hopper 3 and is connected to a motor 2 16, and the other end passes through the hopper 3 and is connected to a gear 17; one end of the other central shaft 15 passes through the hopper 3 and is connected to a gear 2 18 meshing with the gear 1 17. One of the central shafts is driven to rotate by the motor 2, thereby driving one of the crushing rollers to rotate. At the same time, the gear 1 drives the gear 2 to rotate, and then drives the crushing roller on the other central shaft to rotate. The two crushing rollers rotate in opposite directions to achieve the crushing of heavy metal contaminated soil.

[0034] Please refer again Figure 4 A scraper assembly is provided on the inner wall of the hopper 3, and the scraper assembly includes a rotating shaft 19 and a scraper 20 arranged on the rotating shaft 19. Both ends of the rotating shaft 19 are sleeved with torsion springs 21, and the two ends of the torsion spring 21 are respectively connected to the scraper 20 and the hopper 3. A brush 22 is provided on the side of the scraper 20 close to the crushing roller 14. The brush provided on the scraper can scrape off the soil remaining on the surface of the crushing roller, which can avoid the problem of soil residue covering the crushing area and affecting its crushing effect.

[0035] In addition, a collecting box 23 is provided at the end of the conveyor belt 2 to collect the heavy metal contaminated soil discharged from the conveyor belt and fully contacted and reacted with the repair liquid.

[0036] Please refer again Figure 2 and Figure 3 Two rollers 25 are respectively installed on one side of each of the horizontal plates 501 close to the bracket 4. The rollers 25 are slidably arranged in the grooves provided on the bracket 4, which effectively reduces the probability of the spray mechanism being stuck.

[0037] The working principle of the utility model is:

[0038] The heavy metal contaminated soil is poured into the shell 12, and the motor 16 is started to drive the crushing roller 14 to rotate, so as to crush the heavy metal contaminated soil entering the hopper 3, and the crushed heavy metal contaminated soil falls onto the conveyor belt 2. Subsequently, in the process of sending the heavy metal contaminated soil into the collecting box 23 through the conveyor belt 2, on the one hand, the spray pipe 6 in the spray mechanism is an n-type structure, and the top and side walls of the spray pipe 6 are provided with a plurality of nozzles 7 facing the conveyor belt 2, which can spray the repair liquid in the middle and both sides of the conveyor belt, and effectively cover the heavy metal contaminated soil; on the other hand, while the nozzle 7 is spraying, the motor 19 in the driving mechanism drives the connecting rod 10 to rotate, and the roller 11 at one end of the connecting rod 10 drives the connecting frame 5 to reciprocate along the bracket 4, so that the nozzle 7 on the spray pipe 6 can reciprocate and circulate the contaminated soil transported forward on the conveyor belt 2. The repair liquid and the contaminated soil are finally fully mixed through the nozzle 7, thereby effectively achieving the purpose of contaminated soil remediation.

[0039] In summary, the utility model integrates the crushing and spraying of heavy metal contaminated soil, which not only saves labor and facilitates the operation of workers, but also can effectively repair heavy metal contaminated soil.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A heavy metal contaminated soil remediation device, comprising a frame (1) and a conveyor belt (2), characterized in that: A hopper (3) and a spray mechanism are arranged above the conveyor belt (2), and the spray mechanism comprises a connecting frame (5) slidably arranged between two brackets (4); A spray pipe (6) is provided below the connecting frame (5), and a spray head (7) is provided on the spray pipe (6); A driving mechanism is arranged above the connecting frame (5), the driving mechanism comprising a motor (9) and a connecting rod (10) with one end arranged on the output shaft of the motor (9), and the other end of the connecting rod (10) is connected to the connecting frame (5) via a roller (11).

2. The heavy metal contaminated soil remediation device according to claim 1, characterized in that: The connecting frame (5) comprises two horizontal plates (501) symmetrically arranged above the spray pipe (6) and two vertical plates (502) located between the two horizontal plates (501); the spray pipe (6) is mounted on the horizontal plates (501); the horizontal plates (501) are slidably connected to the bracket (4); and the roller 1 (11) is located between the two vertical plates (502).

3. The heavy metal contaminated soil remediation device according to claim 2, characterized in that: The spray pipe (6) is an n-shaped structure, and a plurality of spray heads (7) facing the conveyor belt (2) are arranged on the top and side walls of the spray pipe (6); a liquid inlet pipe (8) is connected to the upper end of the spray pipe (6), and the liquid inlet pipe (8) passes through one of the horizontal plates (501), and a hose (24) is connected to the top of the liquid inlet pipe (8) via a flange.

4. The heavy metal contaminated soil remediation device according to claim 1, characterized in that: A shell (12) is arranged above the hopper (3) and is in communication with the hopper. A set of material baffle plates (13) are installed on the left end surface of the shell (12) and the right end surface of the shell (12). The two sets of material baffle plates (13) are arranged obliquely on the inner wall of the shell (12) and are arranged crosswise between the two sets of material baffle plates (13).

5. The heavy metal contaminated soil remediation device according to claim 1, characterized in that: The inner wall of the hopper (3) is rotatably connected to two symmetrically distributed crushing rollers (14), and a central shaft (15) is provided through the center of the crushing roller (14). One end of one of the central shafts (15) passes through the hopper (3) and is connected to motor 2 (16), and the other end passes through the hopper (3) and is connected to gear 1 (17); and one end of the other central shaft (15) passes through the hopper (3) and is connected to gear 2 (18) meshing with gear 1 (17).

6. The heavy metal contaminated soil remediation device according to claim 5, characterized in that: The inner wall of the hopper (3) is provided with a scraper assembly, which comprises a rotating shaft (19) and a scraper (20) arranged on the rotating shaft (19), both ends of the rotating shaft (19) are sleeved with torsion springs (21), the two ends of the torsion spring (21) are respectively connected to the scraper (20) and the hopper (3), and a brush (22) is arranged on the side of the scraper (20) close to the crushing roller (14).

7. The heavy metal contaminated soil remediation device according to claim 1, characterized in that: A collecting box (23) is provided at the end of the conveyor belt (2).

8. The heavy metal contaminated soil remediation device according to claim 2, characterized in that: Two rollers (25) are respectively installed on one side of each of the transverse plates (501) close to the bracket (4), and the rollers (25) are slidably arranged in a groove provided on the bracket (4).

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