CN221952006U - A highly efficient remediation device for heavy metal contaminated soil - Google Patents

Abstract

The utility model provides a high-efficiency repairing device for heavy metal contaminated soil, which relates to the technical field of soil repairing by a water washing method, and comprises a treatment box for washing the soil, wherein the back surface of the treatment box is provided with a soil inlet communicated with the inside, the soil inlet is in parallel butt joint with a material guide plate, flushing pipelines are arranged on two sides above the material guide plate, a plurality of groups of auger conveying rollers are arranged below the material guide plate, and a baffle plate is arranged inside the treatment box at the interval below the auger conveying rollers; the auger conveying roller rotates to drive and move the soil to be scattered, and the flushing spray head is matched with water spraying to flush and dilute the soil, so that heavy metal ions are washed off, and the soil is repaired more efficiently and stably; when the soil and sewage guided by the discharging frame are accumulated on the separating net and the stirring frame, the motor drives the stirring frame to rotate so as to push the soil on the separating net, so that the water body is permeated and discharged through the separating net, and the efficient separation is completed.

Description

A highly efficient remediation device for heavy metal contaminated soil

Technical Field

The utility model relates to the technical field of water-washing soil remediation, in particular to a high-efficiency remediation device for heavy metal-contaminated soil.

Background Art

There are many devices for remediating heavy metal contaminated soil in the prior art, depending on the method used. Among the many remediation methods, the water washing method uses clean water irrigation to dilute or wash away heavy metal ions, so that the heavy metal ions migrate to deeper soil layers to reduce the concentration of heavy metal ions in the topsoil, or discharge the water containing heavy metal ions out of the field;

However, this method should also comply with the principle of preventing secondary pollution. The toxic water should be discharged into a certain water storage tank or a special purification device for purification. It should not be discharged directly into rivers or fish ponds. As a result, this method is only applicable to the treatment of small areas of seriously polluted soil.

We found that the above cleaning method has the following defects: using clean water irrigation to dilute or wash away heavy metal ions, causing the heavy metal ions to migrate to deeper soil layers. This method only treats the symptoms and not the root cause, and heavy metal pollution to the soil still exists; while collecting the soil for cleaning and collecting the dust for purification in the treatment pool lacks efficient repair equipment, and the clean water irrigation and dilution of heavy metals in the soil is inefficient.

Therefore, we propose an efficient remediation device for heavy metal contaminated soil.

Utility Model Content

The purpose of the utility model is to solve the shortcomings existing in the prior art. Clean water irrigation is used to dilute or wash away heavy metal ions, so that the heavy metal ions migrate to deeper soil layers. This method only treats the symptoms but not the root cause, and heavy metal pollution to the soil still exists. The method of collecting soil for cleaning and collecting dust in a treatment pool for purification lacks an efficient repair device, and the clean water irrigation and dilution of heavy metals in the soil is inefficient.

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

A highly efficient restoration device for heavy metal contaminated soil comprises a treatment box for washing soil with water, a soil inlet connected to the interior is provided on the back of the treatment box, a material guide plate is parallelly connected to the soil inlet, flushing pipes are installed on both sides above the material guide plate, and a plurality of groups of auger conveying rollers are arranged below the material guide plate, a baffle plate is provided inside the treatment box below the auger conveying roller, the treatment box is separated into upper and lower parts by the baffle plate, a plurality of discharge racks are staggeredly arranged through the corresponding side walls of the treatment box in the lower space, a partition net with an inclined structure is also installed at the bottom of the treatment box, a soil discharge cover is installed on the treatment box at the end of the partition net with a lower inclination, a nozzle is installed below the partition net to impact the partition net to prevent soil clogging, and a stirring rack is installed above the inclined surface of the partition net.

Furthermore, the rear end of the processing box is connected to the soil inlet and a soil hopper is installed. The guide plate extends to the front and rear ends of the inner wall of the processing box. Through subsequent soil extrusion and support of the guide plate, the soil is discharged into the auger conveying roller below.

Furthermore, there are several groups of flushing pipes, which are connected to an external water pump to convey water under pressure into the flushing pipes. Several flushing nozzles are provided at positions corresponding to the flushing pipes and the auger conveying rollers.

Furthermore, a plurality of channels are provided through both end surfaces of the baffle plate, and a material guide channel is provided at a position corresponding to the end of the auger conveying roller, and the auger conveying roller is driven by a motor installed outside the processing box.

Furthermore, the discharge rack is of an inclined structure, and the nozzle is connected to an external water pump to convey water to the nozzle under pressure.

Furthermore, the lower end of the treatment box is in a funnel-shaped structure, and the bottom end corresponding to the partition is connected to the sewage discharge pipe, and a soil discharge conveyor belt is also installed below the treatment box.

Furthermore, the stirring frame is driven by a motor installed outside the processing box, and there are several stirring rods, which push the soil on the partition net when rotating.

Compared with the prior art, the beneficial effects of the utility model are:

In the utility model, the soil is driven to move and break up by the rotation of the auger conveyor roller, and the flushing nozzle cooperates with water spraying to flush and dilute the soil, thereby washing away heavy metal ions, and performing soil repair operations more efficiently and stably; and when the soil and sewage are accumulated on the isolation net and the stirring rack through the guidance of the discharge rack, the motor drives the stirring rack to rotate and push the soil on the isolation net, so that the water body penetrates and is discharged through the isolation net, completing efficient separation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of a highly efficient repair device for heavy metal contaminated soil provided by the utility model;

FIG2 is a partial structural schematic diagram of a highly efficient repair device for heavy metal contaminated soil provided by the utility model;

FIG3 is a partial structural anatomical diagram of a treatment box of a high-efficiency repair device for heavy metal contaminated soil provided by the utility model;

FIG4 is an enlarged schematic diagram of structure A of a highly efficient repair device for heavy metal contaminated soil provided by the utility model;

FIG5 is a schematic diagram of the flushing pipeline structure of a high-efficiency repair device for heavy metal contaminated soil provided by the utility model.

Legend: 1. Processing box; 101. Soil hopper; 2. Soil inlet; 3. Material guide plate; 4. Flushing pipe; 41. Flushing nozzle; 5. Auger conveyor roller; 6. Blocking plate; 61. Channel; 62. Material guide channel; 7. Discharge rack; 8. Partition net; 9. Soil discharge cover; 10. Nozzle; 11. Mixing rack.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and/or" used in this article includes any and all combinations of one or more related listed items.

Example 1

As shown in Figures 1-5, the utility model provides a technical solution: an efficient remediation device for heavy metal contaminated soil, comprising a treatment box 1 for washing soil, an observation window is also installed on the front of the treatment box 1, a soil inlet 2 connected to the interior is opened on the back of the treatment box 1, and the soil inlet 2 is parallelly connected to a guide plate 3, and flushing pipes 4 are installed on both sides above the guide plate 3, and a plurality of groups of auger conveying rollers 5 are arranged below the guide plate 3, and a barrier plate 6 is arranged inside the treatment box 1 below the auger conveying roller 5, and the spacing between the conveying blades of the auger conveying roller 5 is adjusted according to the properties of the soil. For relatively soft soil, the spacing between the blades is adjusted. The distance between the blades is farther for hard soil, and the distance between the blades is closer for harder soil. The processing box 1 is separated into upper and lower parts by a baffle plate 6, and a number of discharge racks 7 are staggeredly arranged on the corresponding side walls of the processing box 1 in the lower space, and a partition net 8 with an inclined structure is also installed at the bottom of the processing box 1. The partition net 8 cooperates with a stirring rack 11 to block the soil, and in the process of blocking, the partition net 8 drains the sewage after washing, and a soil discharge cover 9 is installed on the processing box 1 at the lower inclined end of the partition net 8, and a nozzle 10 is installed below the partition net 8 to impact the partition net 8 to prevent soil clogging, and a stirring rack 11 is also installed above the inclined surface of the partition net 8.

Example 2

As shown in Figures 1-5, the rear end of the processing box 1 is connected to the soil inlet 2 and a soil hopper 101 is installed. The guide plate 3 extends to the front and rear ends of the inner wall of the processing box 1. Through the subsequent squeezing of the soil and the support of the guide plate 3, the soil is discharged into the auger conveying roller 5 below. The soil hopper 101 introduces the soil into the processing box 1 through conveyors and other equipment.

There are several groups of flushing pipes 4, and they are connected to an external water pump to convey water into the flushing pipes 4 under pressure. Several flushing nozzles 41 are provided at the positions corresponding to the flushing pipes 4 and the auger conveying rollers 5. When the auger conveying rollers 5 rotate to drive and break up the soil, the flushing nozzles 41 at the bottom ends of the multiple groups of flushing pipes 4 cooperate to spray water to flush and dilute the soil, thereby washing away the heavy metal ions.

A plurality of channels 61 are provided through both end surfaces of the baffle plate 6, and a material guide channel 62 is provided at a position corresponding to the end of the auger conveying roller 5. The auger conveying roller 5 is driven by a motor installed on the outside of the processing box 1. During the auger conveying process, the channel 61 causes water and part of the soil to fall onto the discharge rack 7 below, while the soil conveyed to the end by the material guide channel 62 is introduced into the discharge rack 7.

The discharge rack 7 is of an inclined structure, and the nozzle 10 is connected to an external water pump to convey water to the nozzle 10 under pressure. The external water pump operates to cause the nozzle 10 to spray water to flush the partition 8 to prevent the mesh of the partition 8 from being blocked, thereby assisting in the discharge of sewage.

The lower end of the treatment box 1 is funnel-shaped, and the bottom end is connected to the sewage discharge pipe corresponding to the partition 8. A soil discharge conveyor belt is also installed under the treatment box 1. The soil discharge conveyor belt transports the soil exported from the inclined partition 8, and the sewage is discharged through the sewage discharge pipe.

The stirring frame 11 is driven by a motor installed outside the processing box 1, and there are several stirring rods. When the stirring rods rotate, the soil on the partition net 8 is pushed, and when the soil is accumulated on the partition net 8 and the stirring frame 11.

The working process of the utility model is as follows: when using a high-efficiency repair device for heavy metal contaminated soil, soil first enters through the soil inlet 2, and the subsequent squeezing generated by the continuous entry of soil and the support of the guide plate 3 irregularly discharge the soil into the auger conveyor roller 5 below. During this process, the auger conveyor roller 5 rotates to drive the soil to move forward and break it up, and the flushing nozzle 41 cooperates with the water spray to flush and dilute the soil, thereby washing away the heavy metal ions. The flushed soil and sewage are affected by gravity through the channel 61, so that the water and part of the soil fall into the discharge rack 7 below, and at the same time, the soil transported to the end by the guide channel 62 is also introduced into the discharge rack 7. Finally, when the sewage and soil are guided by the discharge rack 7 and accumulated on the partition 8 and the stirring rack 11, the motor drives the stirring rack 11 to rotate and push the soil on the partition 8, thereby transporting the soil out through the soil discharge conveyor belt, and the sewage is discharged through the sewage discharge pipe, completing the repair process of the soil water washing method.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. An efficient remediation device for heavy metal contaminated soil, comprising a treatment box (1) for washing soil, characterized in that: a soil inlet (2) connected to the interior is opened on the back of the treatment box (1), a material guide plate (3) is connected to the soil inlet (2) in parallel, a flushing pipe (4) is installed on both sides above the material guide plate (3), and a plurality of groups of auger conveying rollers (5) are arranged below the material guide plate (3), and a baffle plate (6) is provided inside the treatment box (1) below the auger conveying roller (5), so that the soil inlet (2) can be cleaned by the water. The baffle plate (6) separates the processing box (1) into upper and lower parts. In the lower space, a plurality of discharge racks (7) are arranged alternately through the corresponding side walls of the processing box (1). A partition net (8) with an inclined structure is also installed at the bottom of the processing box (1). A soil discharge cover (9) is installed on the processing box (1) at the lower end of the partition net (8). A nozzle (10) is installed below the partition net (8) to impact the partition net (8) to prevent soil clogging. A stirring rack (11) is also installed above the inclined surface of the partition net (8). 2. According to claim 1, a high-efficiency remediation device for heavy metal contaminated soil is characterized in that: the rear end of the treatment box (1) is connected to the soil inlet (2) and a soil hopper (101) is installed, and the guide plate (3) extends to the front and rear ends of the inner wall of the treatment box (1), and the soil is discharged into the auger conveyor roller (5) below through subsequent soil extrusion and support of the guide plate (3). 3. According to the high-efficiency remediation device for heavy metal contaminated soil as described in claim 1, it is characterized in that: the flushing pipes (4) are in several groups and are connected to an external water pump to pressurize water into the flushing pipes (4), and several flushing nozzles (41) are provided at the positions corresponding to the flushing pipes (4) and the auger conveying rollers (5). 4. According to claim 1, a high-efficiency remediation device for heavy metal contaminated soil is characterized in that: a plurality of channels (61) are opened on the baffle plate (6) through both end surfaces, and a material guide channel (62) is also opened at the position corresponding to the end of the auger conveying roller (5), and the auger conveying roller (5) is driven by a motor installed on the outside of the processing box (1). 5. The high-efficiency remediation device for heavy metal contaminated soil according to claim 1 is characterized in that: the discharge rack (7) is an inclined structure, and the nozzle (10) is connected to an external water pump to pressurize water and transport it to the nozzle (10). 6. According to claim 1, a high-efficiency remediation device for heavy metal contaminated soil is characterized in that: the lower end of the treatment box (1) is a funnel-shaped structure, and the bottom end corresponding to the partition net (8) is connected to the sewage discharge pipe, and a soil discharge conveyor belt is also installed below the treatment box (1). 7. A high-efficiency remediation device for heavy metal contaminated soil according to claim 1, characterized in that: the stirring frame (11) is driven by a motor installed on the outside of the treatment box (1), and there are several stirring rods, which push the soil on the partition net (8) during the rotation operation.