CN218963606U

CN218963606U - Leaching device for heavy metal contaminated soil treatment

Info

Publication number: CN218963606U
Application number: CN202223389534.7U
Authority: CN
Inventors: 邓雅丽; 陈佳铭; 赵磊
Original assignee: Wuhan Baizihui Technology Co ltd
Current assignee: Wuhan Baizihui Technology Co ltd
Priority date: 2022-12-17
Filing date: 2022-12-17
Publication date: 2023-05-05
Anticipated expiration: 2032-12-17

Abstract

The utility model discloses a leaching device for heavy metal contaminated soil treatment, which comprises a leaching tank, wherein sloping plates are uniformly and alternately arranged on the left inner wall and the right inner wall in the leaching tank, the sloping plates incline downwards towards the center of the leaching tank, a first filter screen is connected between the lower part of the sloping plates and the inner wall of the adjacent leaching tank, a spray head is arranged in the leaching tank between the sloping plates and the first filter screen, the upper end of the spray head is connected with a connecting pipe extending out of the leaching tank, one side, close to the sloping plates, of the upper part of the leaching tank is inserted with a first feed inlet, the bottom of the leaching tank inclines downwards towards one side, the lower part, close to the ground, of the side wall of the leaching tank is provided with a discharge outlet, a filtering mechanism is inserted above the discharge outlet, the lower end of the leaching tank is provided with a connecting block, the lower end of the connecting block is connected with a telescopic rod, the telescopic rod is internally provided with a spring, and the side wall of the leaching tank is provided with a vibrating motor. The utility model has better leaching effect.

Description

Leaching device for heavy metal contaminated soil treatment

Technical Field

The utility model relates to the technical field of soil remediation equipment, in particular to a leaching device for treating heavy metal contaminated soil.

Background

Soil is the basis on which human beings depend on survival and development, and daily life and production activities of human beings are closely connected with the soil. When the heavy metal content in the soil exceeds the normal range, a series of problems such as the destruction of the soil structure, the deterioration of the soil environment quality and the like can be caused, the normal functions of the soil are destroyed, and the environment pollution is caused. Heavy metal pollution becomes the difficulty and the key point of soil pollution treatment because of the characteristics of high harmfulness, high treatment difficulty, concealment, long-term property and the like.

The heavy metal pollution of the soil can destroy the normal functions of the soil, so that the composition and physicochemical properties of the soil are changed, enzyme activity, microbial activity and the like in the soil are inhibited, and the soil ecological system and the plant ecological system are damaged. In addition, when the Cd concentration in the soil is increased, the growth and metabolic processes of plants, such as photosynthesis, respiration and other metabolic activities of cells, are inhibited, so that the nutrients and water absorbed by the plants are reduced, and the leaves of the plants are obviously faded, even dead. When Cd in the environment enters the human body through a food chain and the like, it also causes harm to the health of the human body, resulting in various diseases including cardiovascular diseases, cancers, kidney damage, nervous system, brain, skin, bones and the like.

The most fundamental ways of soil heavy metal remediation are mainly two, namely pollution source control and pollution source elimination. The main repairing methods include physical method, chemical method, biological method, etc. by which heavy metals in soil are immobilized, and toxic form is converted into low toxic form or non-toxic form, and the transfer of heavy metals through ecosystem circulation and other ways can be effectively reduced.

The soil leaching method is one of chemical restoration, firstly, the dredged soil is deslagged and dispersed, then the dredged soil is fully mixed with the extractant, the polluted soil and the extractant act under the assistance of external force such as stirring, then the residual extractant is removed by leaching with water, the washed soil is separated, and the heavy metal in the treated soil reaches the normal level, so that the subsequent backfilling or other deep treatment can be carried out.

However, when the existing leaching device is used for washing soil, the leaching of the extractant in the soil needs to be carried out for many times, so that the leaching effect of the soil at the bottom is poor.

Disclosure of Invention

The utility model aims to solve the technical problems and provide the leaching device for treating the heavy metal contaminated soil, which has good leaching effect.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a leaching device for heavy metal contaminated soil treatment, includes the leaching case, the leaching incasement about the inner wall evenly crisscross be equipped with the swash plate, the swash plate slope downwards towards leaching case center, swash plate below and adjacent leaching incasement wall between be connected with filter screen one, the leaching incasement of being connected between swash plate and the filter screen one be equipped with the shower nozzle, shower nozzle upper end be connected with and stretch out the connecting pipe outside the leaching case, one side grafting that is close to the swash plate above the leaching case have feed inlet one, feed inlet one cross section be rectangular frame structure, leaching bottom of the case slope downwards towards one side, the lateral wall below that the leaching case is close to ground be equipped with the discharge gate, discharge gate top grafting have filter unit, filter unit including the filter screen two upper ends that are connected that are located the discharge gate, the lateral wall grafting that the leaching case was kept away from to the connecting plate have the threaded rod, the leaching case lateral wall be equipped with complex internal thread blind hole, leaching case lower extreme corner be fixed respectively and be equipped with the connecting block, the lower extreme connection have the telescopic link, the telescopic link is equipped with the telescopic link.

As an improvement, a second feed inlet with an inverted quadrangular frustum structure is arranged above the first feed inlet.

As an improvement, the same spray head is arranged in one side, far away from the first feed inlet, of the upper part of the leaching tank, and the upper end of the spray head is connected with the same connecting pipe.

As an improvement, the lower end of the spray head is parallel to the surface of the inclined plate adjacent to the lower part.

As an improvement, one end of the threaded rod, which is far away from the shower box, is fixedly connected with a holding rod.

Compared with the prior art, the utility model has the advantages that: the leaching device for heavy metal contaminated soil treatment can wash rolling soil, and the position where the soil can be washed when moving is more comprehensive, so that the leaching effect is better, and residues are avoided.

Drawings

FIG. 1 is a schematic structural view of a leaching device for treating heavy metal contaminated soil.

FIG. 2 is a schematic diagram of the structure of a filtration mechanism of a leaching device for treating heavy metal contaminated soil according to the present utility model.

As shown in the figure: 1. a shower box; 2. a sloping plate; 3. a first filter screen; 4. a spray head; 5. a connecting pipe; 6. a first feeding port; 7. a discharge port; 8. a filtering mechanism; 9. a second filter screen; 10. a connecting plate; 11. a threaded rod; 12. an internal thread blind hole; 13. a connecting block; 14. a telescopic rod; 15. a spring; 16. a vibration motor; 17. a second feeding port; 18. a grip.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a leaching device for heavy metal contaminated soil treatment comprises a leaching tank 1, wherein inclined plates 2 are uniformly and alternately arranged on the left and right inner walls in the leaching tank 1, the inclined plates 2 incline downwards towards the center of the leaching tank 1, a filter screen I3 is connected between the lower part of the inclined plates 2 and the inner walls of the adjacent leaching tank 1, a spray head 4 is arranged in the leaching tank 1 between the connected inclined plates 2 and the filter screen I3, the upper end of the spray head 4 is connected with a connecting pipe 5 extending out of the leaching tank 1, one side, close to the inclined plates 2, of the upper part of the leaching tank 1 is spliced with a feed inlet I6, the cross section of the feed inlet I6 is of a rectangular frame structure, the bottom of the leaching tank 1 inclines downwards towards one side, a discharge outlet 7 is arranged below the side wall, close to the ground, of the leaching tank 1 is spliced with a filtering mechanism 8 above the discharge outlet 7, the filtering mechanism 8 comprises a second filter screen 9 positioned in the discharge hole 7 and a connecting plate 10 connected with the upper end of the second filter screen 9, a threaded rod 11 is inserted into the side wall of the connecting plate 10 far away from the leaching tank 1, an internal threaded blind hole 12 matched with the threaded rod 11 is formed in the side wall of the leaching tank 1, connecting blocks 13 are fixedly arranged at corners of the lower end of the leaching tank 1 respectively, a telescopic rod 14 is connected with the lower end of the connecting blocks 13, a spring 15 is arranged in the telescopic rod 14, a vibrating motor 16 is arranged on the side wall of the leaching tank 1, soil is poured into the leaching tank 1 from a first feed hole 6, the soil falls onto the sloping plate 2, the sloping plate moves downwards along the sloping plate, clear water is sequentially introduced into the connecting pipe 5 from top to bottom, the rolling soil is leached in water, the extractant in the soil is dissolved in the water, the side wall of the leaching tank 1 is provided with the vibrating motor 16, the telescopic rod 14 is arranged below the leaching tank 1, the spring 15 is arranged in the telescopic rod 14, so that the leaching tank 1 can vibrate up and down, soil blockage in the leaching tank 1 is avoided, the position where clean water can be washed is more comprehensive, the leaching effect is better, and residues are avoided.

And a second feeding port 17 with an inverted quadrangular frustum structure is arranged above the first feeding port 6, so that the soil is more convenient to feed.

The shower box 1 top be equipped with same shower nozzle 4 in the one side of keeping away from feed inlet one 6, shower nozzle 4 upper end be connected with same connecting pipe 5, make the region of drip washing wider.

The lower end of the spray head 4 is parallel to the surface of the inclined plate 2 adjacent to the lower part, the direction of the spray head 4 is perpendicular to the inclined plate 2, and the leaching force is larger.

One end of the threaded rod 11 far away from the shower box 1 is fixedly connected with a holding rod 18, so that the threaded rod 11 can be conveniently rotated.

In the concrete implementation of the utility model, the leaching device for heavy metal polluted soil treatment is used for pouring soil into the leaching tank 1 from the first feeding hole 6, so that the soil falls onto the sloping plate 2, the sloping plate moves downwards, clear water is sequentially introduced into the connecting pipe 5 from top to bottom, water is sprayed out of the spray head 4, the soil is prevented from contacting the spray head 4 through the first filter screen 3, the rolling soil is leached, the extractant in the soil is dissolved in the water, the side wall of the leaching tank 1 is provided with the vibrating motor 16, the telescopic rod 14 is arranged below the leaching tank 1, the spring 15 is arranged in the telescopic rod 14, the leaching tank 1 can vibrate up and down, the soil in the leaching tank 1 is prevented from being blocked, the position where the clear water can be washed is more comprehensive, the leaching effect is better, the residue is avoided, the filtering mechanism 8 is arranged at the position of the discharging hole 7 of the leaching tank 1, the water in the soil can be firstly discharged, and the filtering mechanism 8 can be discharged out of the soil for subsequent operation.

Meanwhile, a second feed inlet 17 with an inverted quadrangular frustum structure is arranged above the first feed inlet 6, so that soil is more convenient to feed; the same spray head 4 is arranged in one side, far away from the first feed inlet 6, of the upper part of the leaching tank 1, and the upper end of the spray head 4 is connected with the same connecting pipe 5, so that the leaching area is wider; the lower end of the spray head 4 is parallel to the surface of the inclined plate 2 adjacent to the lower part, the spray head 4 faces to be perpendicular to the inclined plate 2, and the leaching force is larger; one end of the threaded rod 11 far away from the shower box 1 is fixedly connected with a holding rod 18, so that the threaded rod 11 can be conveniently rotated.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides a leaching device for heavy metal contaminated soil treatment, includes leaching tank (1), its characterized in that: the utility model provides a shower box (1) in the inner wall evenly crisscross be equipped with swash plate (2) about, swash plate (2) slope downwards towards drip washing box (1) center, swash plate (2) below and adjacent drip washing box (1) inner wall between be connected with filter screen one (3), drip washing box (1) between swash plate (2) and filter screen one (3) in be equipped with shower nozzle (4), shower nozzle (4) upper end be connected with and stretch out drip washing box (1) outer connecting pipe (5), one side that is close to swash plate (2) above drip washing box (1) peg graft and have feed inlet one (6), feed inlet one (6) cross section be rectangular frame structure, drip washing box (1) bottom slope downwards towards one side, drip washing box (1) be close to the lateral wall below on ground be equipped with discharge gate (7), discharge gate (7) top peg graft and have filter mechanism (8), filter mechanism (8) including be located two (9) and two and be connected with filter screen one (10) on drip washing box (1) lateral wall (10) of threaded rod (1) and lateral wall (11) of keeping away from threaded rod (11), the washing box is characterized in that connecting blocks (13) are fixedly arranged at corners of the lower end of the washing box (1) respectively, the lower ends of the connecting blocks (13) are connected with telescopic rods (14), springs (15) are arranged in the telescopic rods (14), and vibration motors (16) are arranged on the side walls of the washing box (1).

2. The leaching device for treating heavy metal contaminated soil according to claim 1, wherein: and a second feed inlet (17) with an inverted quadrangular frustum structure is arranged above the first feed inlet (6).

3. The leaching device for treating heavy metal contaminated soil according to claim 1, wherein: the shower device is characterized in that the same spray head (4) is arranged in one side, away from the first feed inlet (6), of the upper side of the shower box (1), and the upper end of the spray head (4) is connected with the same connecting pipe (5).

4. The leaching device for treating heavy metal contaminated soil according to claim 1, wherein: the lower end of the spray head (4) is parallel to the surface of the inclined plate (2) adjacent to the lower part.

5. The leaching device for treating heavy metal contaminated soil according to claim 1, wherein: one end of the threaded rod (11) far away from the shower box (1) is fixedly connected with a holding rod (18).