Drum-type soil leaching remediation device

Abstract

The invention relates to a drum-type soil leaching remediation device which solves the technical problems that when an existing leaching machine is used for remediating soil, the soil is prone to caking, the soil remediation effect is affected, and the permeation efficiency is low in the leaching process, the drum-type soil leaching remediation device comprises a bottom frame, a remediation drum with the two through ends is rotationally installed on the bottom frame, and one end of the remediation drum is fixedly connected with a first-stage screen drum; a first-stage screen drum is fixed outside the remediation roller, a second-stage screen drum is fixed outside the first-stage screen drum, a gap is formed between the first-stage screen drum and the second-stage screen drum, the first-stage screen drum extends out of the second-stage screen drum, leaching pipes are coaxially and rotatably mounted in the remediation roller, the first-stage screen drum and the second-stage screen drum, and a plurality of leaching nozzles are fixed on the leaching pipes. The stirring roller can further scatter and crush large and caked soil in the remediation roller, and the cutting knife in the remediation roller can cut and crush the large and caked soil, so that the remediation efficiency of the soil is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soil remediation, in particular to a drum-type soil leaching and remediation device. Background Art

[0002] Soil leaching is to transfer heavy metals in the soil to soil leaching solution by reversing the two reactions of heavy metal ion adsorption and heavy metal precipitation in the soil. Soil leaching first removes the residue and disperses the excavated soil, then fully mixes it with the extractant. The heavy metals will be transferred to the soil extractant, and then it is eluted with water to remove the residual extractant. After the heavy metals in the treated soil reach the normal level, it can be reused, and the leaching solution can be treated to recover the heavy metals and extractant. The key to soil leaching technology lies in the extractant, which must be able to extract heavy metals without destroying the original structure of the soil. Currently, the main extractants are nitric acid, hydrochloric acid, phosphoric acid, EDTA and DTPA, etc. A soil leaching machine is required for soil leaching and remediation. When the soil in the leaching machine is mixed with the extractant, the soil will clump. Once the soil clumps, the extractant will not be able to quickly penetrate the soil, thus affecting the soil remediation effect. In addition, most existing leaching methods are box-type from top to bottom, and the penetration efficiency during leaching is relatively low, and the soil remediation efficiency is low.

[0003] On this basis, the present invention provides a drum-type soil washing and repairing device. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a drum-type soil leaching and repair device. The present invention has a novel structure and ingenious conception, and effectively solves the technical problems that the existing leaching machine is prone to soil agglomeration when repairing the soil, affecting the soil repair effect and the relatively low penetration efficiency during leaching.

[0005] A drum-type soil leaching and repair device is characterized in that it comprises a base frame, on which a repair drum with two ends transparent is rotatably mounted, one end of the repair drum is fixedly connected to a primary screen cylinder, a secondary screen cylinder is fixed to the outside of the primary screen cylinder, a gap is provided between the primary screen cylinder and the secondary screen cylinder, the primary screen cylinder extends out of the secondary screen cylinder, a leaching pipe is coaxially mounted in the repair drum, the primary screen cylinder and the secondary screen cylinder, and a plurality of leaching nozzles are fixed on the leaching pipe.

[0006] Preferably, a water flow plate fixed to the base frame is provided at the lower end of the secondary screen cylinder.

[0007] Preferably, support seats are fixed at both ends of the base frame, a rotating wheel is rotatably mounted on the support seats, a driving seat is fixed in the middle of the base frame, a driving gear is rotatably mounted on the driving seat, one of the driving gears is connected to a driving motor, rotating rings matching the rotating wheel are fixed at both ends of the repair roller, and a rotating gear matching the driving gear is fixed in the middle of the repair roller.

[0008] Preferably, support frames are fixed inside the repair drum and the first-level screen cylinder, and the elution pipe is rotatably installed in the support frame.

[0009] Preferably, the end of the elution tube is placed outside the primary screen cylinder, an upper pulley is fixed to the end of the elution tube, the upper pulley is connected to a lower pulley via a belt, and the lower pulley is coaxially provided with a rotating motor.

[0010] Preferably, the end of the elution tube is rotatably connected to a sleeve, and the sleeve is connected to a sleeve rack.

[0011] Preferably, a plurality of cross-shaped stirring rollers are fixed on the elution tube.

[0012] Preferably, a plurality of arranged cutting knives are evenly distributed and fixed on the inner circumference of the repair drum.

[0013] The present invention has the following technical effects.

[0014] The present invention changes the elution device into a drum-type repair drum. When the elution is performed in conjunction with the elution pipe, the mixture of soil and extractant is always in a rolling state, which can effectively prevent the soil from agglomerating. At the same time, when the soil is running, large metal blocks and soil blocks can be screened out from the first-level screen cylinder, and small soil can be screened out from the second-level screen cylinder. The mud is discharged from the water flow plate at the lower end for subsequent repair, and the stirring roller can further break up and crush the large and agglomerated soil in the repair drum to ensure the soil repair efficiency. At the same time, the cutting knife in the repair drum can cut and crush the large and agglomerated soil to always ensure the mixing efficiency and permeability of the extractant and soil, thereby improving the soil repair efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is an overall three-dimensional schematic diagram of the present invention.

[0016] Figure 2 It is a schematic sectional front view of the present invention.

[0017] Figure 3 It is a sectional stereoscopic schematic diagram of the present invention.

[0018] Reference numerals: 1-base frame; 2-repair drum; 3-primary screen cylinder; 4-secondary screen cylinder; 5-rinsing pipe; 6-rinsing nozzle; 7-water flow plate; 8-support seat; 9-rotating wheel; 10-driving seat; 11-driving gear; 12-driving motor; 13-rotating ring; 14-rotating gear; 15-support frame; 16-upper pulley; 17-belt; 18-lower pulley; 19-rotating motor; 20-casing; 21-casing frame; 22-stirring roller; 23-cutting knife. DETAILED DESCRIPTION

[0019] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figures 1 to 3 The details of the embodiments will be clearly presented. The contents mentioned in the following embodiments are all based on the drawings in the specification.

[0020] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] The present invention discloses a drum type soil leaching and repairing device, comprising a base frame for providing a fixed foundation, a repairing drum 2 is rotatably mounted on the base frame 1, the interior of the repairing drum 2 is a cavity, and both ends are transparent, a primary screen cylinder 3 is fixedly connected to one end of the repairing drum 2, a secondary screen cylinder 4 is fixed to the outside of the primary screen cylinder 3, the screen aperture of the primary screen cylinder 3 is larger than the screen aperture of the secondary screen cylinder 4, a gap is arranged between the primary screen cylinder 3 and the secondary screen cylinder 4, the length of the primary screen cylinder 3 is larger than the secondary screen cylinder 4 and the primary screen cylinder 3 extends out of the primary screen cylinder 4, a leaching pipe 5 is rotatably mounted at the axis of the repairing drum 2, the primary screen cylinder 3 and the secondary screen cylinder 4, the leaching pipe 5 is used for spraying an extractant, and a plurality of leaching nozzles 6 evenly distributed around the circumference are fixed on the leaching pipe 5.

[0022] The soil to be repaired is added from one end of the repair drum 2, and the rinsing tube 5 rotates to spray the extractant at various angles inside to mix with the soil in the repair drum 2. As the repair drum 2 and the rinsing tube 5 continue to rotate, the mixing efficiency of the soil and the extractant is guaranteed, and the extractant does not need to gradually penetrate downward. At the same time, the soil agglomeration is minimized to improve the repair effect of the soil and the extractant. While the soil is being mixed, the repair drum 2 is in an inclined setting state, moving from one end of the repair drum 2 to the other end, and then entering the primary screen cylinder 3, and then the small soil is screened into the secondary screen cylinder 4, and the mud flows into the water flow plate 7 at the lower end. Large stones fall from the end of the primary screen cylinder 3, and small stones fall from the end of the secondary screen cylinder 4.

[0023] Furthermore, in order to recycle water resources and treat the mud in a better environmentally friendly manner, a water flow plate 7 fixed to the base frame 1 is provided at the lower end of the secondary screen cylinder 4 .

[0024] Furthermore, in order to realize the normal rotation of the repair roller 2, support seats 8 are fixed at both ends of the base frame 1, and a rotating wheel 9 is rotatably installed on the support seat 8. A driving seat 10 is fixed in the middle of the base frame 1, and a driving gear 11 is rotatably installed on the driving seat 10. One of the driving gears 11 is coaxially connected to a driving motor 12. Rotating rings 13 matching the rotating wheel 9 are fixed at both ends of the repair roller 2, and a rotating gear 14 matching the driving gear 11 is fixed in the middle of the repair roller 2.

[0025] The driving motor 12 is turned on, and the driving motor 12 controls the driving gear 11 to rotate. The driving gear 11 meshes with the rotating gear 14 to rotate. The rotating gear 14 drives the repairing roller 2 to rotate. The rotating ring 13 on the repairing roller 2 rotates with the cooperation of the rotating wheel 9.

[0026] Furthermore, in order to realize rotational support for the elution tube 5 , a support frame 15 is fixed at one end of the repair drum 2 , and a support frame is fixed inside one end of the primary screen cylinder 3 , and the elution tube 5 is rotatably installed inside the support frame 15 .

[0027] Furthermore, in order to realize the rotation of the elution tube 5, the end of the elution tube 5 extends out of the first-level screen cylinder 3, and an upper pulley 16 is fixed to the external end, and the upper pulley 16 is connected to the lower pulley 18 via a belt 17, and the lower pulley 18 is coaxially connected to a rotating motor 19, and the rotating motor 19 is fixed on the motor frame. By controlling the rotating motor 19, the rotating motor 19 drives the lower pulley 18 to rotate, and the lower pulley 18 drives the upper pulley 16 to rotate, thereby driving the elution tube 5 to rotate in the support frame 15.

[0028] Furthermore, a fixed casing rack 21 is provided at the end of the elution tube 5, a casing 20 is fixed on the casing rack 21, the end of the elution tube 5 is rotatably installed in the casing 20, and the other end of the casing 20 is connected to the extractant inlet.

[0029] Furthermore, in order to prevent agglomeration during soil remediation, a plurality of evenly distributed stirring rollers 22 are fixed on the elution pipe 5. While the soil rotates in the remediation drum 2, the primary screen cylinder 3, and the secondary screen cylinder 4, it is crushed and stirred by the stirring rollers 22 to prevent agglomeration when the soil is mixed with the extractant.

[0030] Furthermore, in order to better prevent soil from agglomerating, large pieces of soil in the original soil are also crushed, and multiple circles of evenly distributed cutting knives 23 are fixed on the inner wall of the repair drum 2 to cut and crush the rotating soil.

[0031] The present invention changes the elution device into a drum-type repair drum. When the elution is performed in conjunction with the elution pipe, the mixture of soil and extractant is always in a rolling state, which can effectively prevent the soil from agglomerating. At the same time, when the soil is running, large metal blocks and soil blocks can be screened out from the first-level screen cylinder, and small soil can be screened out from the second-level screen cylinder. The mud is discharged from the water flow plate at the lower end for subsequent repair, and the stirring roller can further break up and crush the large and agglomerated soil in the repair drum to ensure the soil repair efficiency. At the same time, the cutting knife in the repair drum can cut and crush the large and agglomerated soil to always ensure the mixing efficiency and permeability of the extractant and soil, thereby improving the soil repair efficiency.

[0032] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as limiting the present invention. After reading the above content, various modifications and substitutions of the present invention will be obvious to those skilled in the art. Therefore, the protection scope of the present invention should be defined by the attached claims.

Claims

1. A drum type soil washing and repairing device, characterized in that: The invention comprises a base frame (1), on which a repair drum (2) with two ends being transparent is rotatably mounted, one end of the repair drum (2) is fixedly connected to a primary screen cylinder (3), a secondary screen cylinder (4) is fixedly mounted outside the primary screen cylinder (3), a gap is provided between the primary screen cylinder (3) and the secondary screen cylinder (4), the primary screen cylinder (3) extends out of the secondary screen cylinder (4), a leaching pipe (5) is coaxially rotatably mounted inside the repair drum (2), the primary screen cylinder (3) and the secondary screen cylinder (4), and a plurality of leaching nozzles (6) are fixed on the leaching pipe (5).

2. A drum-type soil washing and repairing device according to claim 1, characterized in that: The lower end of the secondary screen cylinder (4) is provided with a water flow plate (7) fixed to the base frame (1).

3. A drum-type soil washing and repairing device according to claim 1, characterized in that: Support seats (8) are fixed at both ends of the base frame (1), a rotating wheel (9) is rotatably mounted on the support seat (8), a driving seat (10) is fixed in the middle of the base frame (1), a driving gear (11) is rotatably mounted on the driving seat (10), one of the driving gears (11) is connected to a driving motor (12), rotating rings (13) matching the rotating wheel (9) are fixed at both ends of the repair roller (2), and a rotating gear (14) matching the driving gear (11) is fixed in the middle of the repair roller (2).

4. A drum-type soil washing and repairing device according to claim 1, characterized in that: A support frame (15) is fixed inside the repair drum (2) and the first-level screen drum (4), and the elution pipe (5) is rotatably mounted inside the support frame (15).

5. A drum-type soil washing and repairing device according to claim 4, characterized in that: The end of the elution pipe (5) is placed outside the primary screen cylinder (4), an upper belt pulley (16) is fixed to the end of the elution pipe (5), the upper belt pulley (16) is connected to a lower belt pulley (18) via a belt (17), and the lower belt pulley (18) is coaxially provided with a rotating motor (19).

6. A drum-type soil washing and repairing device according to claim 5, characterized in that: The end of the elution tube (5) is rotatably connected to a sleeve (20), and the sleeve (20) is connected to a sleeve rack (21).

7. The drum type soil washing and repairing device according to claim 1 is characterized in that: A plurality of cross-shaped stirring rollers (22) are fixed on the elution tube (5).

8. The drum-type soil washing and repairing device according to claim 1 is characterized in that: A plurality of arranged cutting knives (23) are evenly distributed and fixed on the inner circumference of the repair drum (2).

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