Reinforced reduction treatment device for polluted soil purification

Abstract

The utility model discloses an enhanced reduction treatment device for purifying polluted soil, and relates to the technical field of soil purification. Comprising a bulldozer and a digging bucket, the bulldozer is connected with an earth cutting bucket through a supporting arm, an earth cutting structure is installed in the earth cutting bucket, a protruding material mixing chamber is installed at the end, close to the bulldozer, of the earth cutting bucket, and a mixing structure is installed in the material mixing chamber; a raw material box is installed outside the earth cutting hopper, a plurality of discharging pipes pointing to the earth cutting structure are installed inside the earth cutting hopper, and the discharging pipes are connected with the raw material box. The earth cutting structure comprises two rotating discs rotationally installed in the earth cutting hopper, a plurality of annularly-distributed scrapers are vertically installed on the rotating discs, and the scrapers are inclined relative to the central axis of the rotating discs. The device can quickly, flexibly and efficiently purify soil, purification is more sufficient, the use difficulty is reduced, and the purification effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil purification, in particular to an enhanced reduction treatment device for purifying contaminated soil. Background Art

[0002] In-situ chemical redox technology is to inject oxidants or reductants into the soil of the polluted area, and through oxidation or reduction, the pollutants in the soil layer are converted into non-toxic or relatively less toxic substances to achieve the purpose of remediation. Common oxidants include permanganate, hydrogen peroxide, Fenton's reagent, persulfate and ozone; common reductants include hydrogen sulfide, sodium dithionite, sodium bisulfite, ferrous sulfate, calcium polysulfide, divalent iron, zero-valent iron, etc. It is suitable for the remediation of soil, waste residues and river sediments containing multiple metals; it is suitable for the remediation of different polluting industries such as ore dressing plants, smelters, non-ferrous metal processing, etc.

[0003] When using the reduction method to treat contaminated soil, there are mainly two methods. The first is to inject the reducing agent into the soil to diffuse and neutralize the reducing agent in the soil. The second is to dig out the contaminated soil and break it up. After adding an appropriate amount of reducing agent into the soil, use a mixing device to fully mix it, and then fill the purified soil back into the original environment. The method of directly injecting the reducing agent is prone to the problem of insufficient dispersion of the reducing agent, which affects the effect of soil purification. The method of digging and mixing the soil can significantly improve the mixing effect, but this method requires digging the soil and backfilling it, and it also has the disadvantages of high operating costs and difficulty. Utility Model Content

[0004] The purpose of the utility model is to provide an enhanced reduction treatment device for contaminated soil purification to solve the problems raised in the above background technology. A reduction treatment device capable of quickly purifying soil is proposed, which reduces the difficulty of treatment and improves the effect of treatment.

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

[0006] An enhanced reduction treatment device for purifying contaminated soil comprises a bulldozer and an excavation bucket; the bulldozer is connected to the excavation bucket via a support arm, an excavation structure is installed inside the excavation bucket, a protruding mixing chamber is installed at one end of the excavation bucket close to the bulldozer, and a mixing structure is installed in the mixing chamber; a raw material box is installed outside the excavation bucket, a plurality of discharge pipes pointing to the excavation structure are installed inside the excavation bucket, and the discharge pipes are connected to the raw material box; the excavation structure comprises two turntables rotatably installed inside the excavation bucket, a plurality of annularly distributed scrapers are vertically installed on the turntable, and the scrapers are inclined relative to the central axis of the turntable.

[0007] As a further solution of the utility model: the turntable is connected to the rotating shaft, a transmission gear is installed on the rotating shaft, a driven gear connected to the transmission gear is installed inside the digging bucket, a primary motor is installed on the digging bucket, and the primary motor is connected to the driven gear.

[0008] As a further solution of the utility model: a support ring connecting the scrapers is installed on the inner side of the scraper, and cutters distributed in an annular manner are installed inside the support ring.

[0009] As a further solution of the utility model: the mixing structure includes mounting plates, which are rotatably mounted at both ends of the mixing chamber, and a plurality of annularly distributed scrapers are connected between the mounting plates, and the cross-sectional shape of the scrapers is crescent-shaped.

[0010] As a further solution of the utility model: a secondary motor is installed on one side of the mixing chamber, and pulleys are installed on the secondary motor and the mounting plate respectively, and the pulleys are connected through a transmission belt.

[0011] As a further solution of the utility model: bucket teeth are respectively installed on both sides of the end of the digging bucket away from the bulldozer, and a hollow plate is installed on the end of the mixing chamber close to the bulldozer.

[0012] As a further solution of the utility model: a primary hydraulic rod is installed on the bulldozer, the primary hydraulic rod is connected to the support arm, a secondary hydraulic rod is installed on the support arm, and the secondary hydraulic rod is connected to the mixing chamber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The above-mentioned enhanced reduction treatment device for purifying contaminated soil is adopted. This device uses a digging structure in the digging bucket to advance from the side of the contaminated soil. The digging structure continuously crushes the soil and moves it into the digging bucket. After mixing with the reducing agent inside the digging bucket, the mixing effect is improved through the mixing structure and the soil is discharged backwards. This device can directly carry out soil mixing and purification work on the site of contaminated soil. There is no need to dig the soil to a designated construction site and then transport it back to the original position after purification. This significantly reduces the workload and improves the efficiency of soil purification. Compared with the method of directly injecting the reducing agent into the ground, this device can significantly improve the mixing effect and enhance the purification capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an enhanced reduction treatment device for purifying contaminated soil.

[0016] Figure 2 This is a schematic diagram of the structure of the excavator bucket in the enhanced reduction treatment device for contaminated soil purification.

[0017] Figure 3 This is a schematic structural diagram of the cross section of the excavator bucket in the enhanced reduction treatment device for contaminated soil purification.

[0018] Figure 4 This is a schematic diagram of the structure of the excavation structure and the mixing structure in the enhanced reduction treatment device for contaminated soil purification.

[0019] In the figure: 1. bulldozer; 11. support arm; 12. primary hydraulic rod; 13. secondary hydraulic rod; 2. raw material box; 21. discharge pipe; 3. digging bucket; 31. bucket teeth; 32. mixing chamber; 321. hollow plate; 4. mixing structure; 41. secondary motor; 42. transmission belt; 43. pulley; 44. scraper; 45. mounting plate; 5. digging structure; 51. primary motor; 52. scraper; 53. support ring; 54. cutter; 55. transmission gear; 56. driven gear; 57. rotating shaft; 571. turntable. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 to Figure 4 In Example 1 of the utility model, an enhanced reduction treatment device for purifying contaminated soil includes a bulldozer 1 and an excavator bucket 3; the bulldozer 1 is connected to the excavator bucket 3 through a support arm 11, and an excavation structure 5 is installed inside the excavator bucket 3, and a protruding mixing chamber 32 is installed at one end of the excavator bucket 3 close to the bulldozer 1, and a mixing structure 4 is installed in the mixing chamber 32; a raw material box 2 is installed outside the excavator bucket 3, and a plurality of discharge pipes 21 pointing to the excavation structure 5 are installed inside the excavator bucket 3, and the discharge pipes 21 are connected to the raw material box 2; the excavation structure 5 includes two turntables 571 rotatably installed inside the excavator bucket 3, and a plurality of annularly distributed scrapers 52 are vertically installed on the turntable 571, and the scrapers 52 are inclined relative to the central axis of the turntable 571.

[0022] The device is provided with a digging bucket 3 at the front end of the bulldozer 1, and the digging bucket 3 is controlled by the support arm 11, and is pushed forward from the side of the contaminated soil. The soil entering the digging bucket 3 contacts the digging structure 5, and is dug and crushed by the digging structure 5. At the same time, the raw material box 2 located behind the digging bucket 3 is filled with a reducing agent, and the reducing agent is evenly spread on the soil in the digging bucket 3 through the discharge pipe 21. The crushed soil is squeezed into the mixing chamber 32 at the rear as the digging bucket 3 moves forward, and is mixed again by the mixing structure 4 and discharged from the rear of the digging bucket 3. In this process, the dug soil can be evenly mixed with the reducing agent, achieving an effective soil purification effect.

[0023] This device can be used directly on contaminated soil without the need to dig out the soil and transfer it to a large-scale equipment for purification, which significantly improves the purification efficiency and is more flexible and convenient to use. In addition, this device can ensure that the soil is fully purified, solves the problem that the reducing agent cannot be evenly diffused in the soil, and significantly improves the purification effect.

[0024] As another embodiment of the present invention, please refer to Figure 3 and Figure 4 In the second embodiment of the utility model, the rotating disk 571 is connected to the rotating shaft 57, the rotating shaft 57 is equipped with a transmission gear 55, the digging bucket 3 is equipped with a driven gear 56 connected to the transmission gear 55, and the digging bucket 3 is equipped with a primary motor 51, and the primary motor 51 is connected to the driven gear 56. The primary motor 51 can control multiple rotating shafts 57 to rotate simultaneously through the cooperation of the transmission gear 55 and the driving gear, driving each group of annular scrapers 52, and the scrapers 52 can scrape off the soil agglomerated in front layer by layer in a sheet-like structure during the rotation process, so as to facilitate purification.

[0025] See also Figure 2 to Figure 4 A support ring 53 connecting the scrapers 52 is installed inside the scraper 52, and a ring-shaped cutter 54 is installed inside the support ring 53. The support ring 53 is used to strengthen the support for the scraper 52 to prevent the scraper 52 from deforming under the continuous torque. At the same time, the cutter 54 inside the support ring 53 can cut and crush the flaky soil scraped by the scraper 52 again, so that the soil is broken into smaller pieces, so that the reducing agent can fully contact with the soil.

[0026] See also Figure 3 and Figure 4The mixing structure 4 includes a mounting plate 45, which is rotatably mounted at both ends of the mixing chamber 32, and a plurality of annularly distributed scrapers 44 are connected between the mounting plates 45, and the cross-sectional shape of the scrapers 44 is crescent-shaped. The mounting plate 45 is mounted with a crescent-shaped scraper 44, which is placed horizontally. The soil is squeezed into the mixing chamber 32 by the thrust of the digging bucket 3, and is rolled and stirred by the scraper 44, thereby improving the stirring effect. The cross-sectional shape of the scraper 44 is not a restrictive structure, but an improved structure, and the shape of the scraper 44 can be used to better stir.

[0027] See also Figure 3 A secondary motor 41 is installed on one side of the mixing chamber 32, and pulleys 43 are installed on the secondary motor 41 and the mounting plate 45, respectively, and the pulleys 43 are connected through a transmission belt 42. The secondary motor 41 can drive the mounting plate 45 to rotate through the cooperation of the transmission belt 42 and the pulley 43. In order to reduce the resistance caused by the complex structure, the secondary motor 41 is arranged above or behind the mixing chamber 32, so the transmission belt 42 needs to be used to provide transmission.

[0028] See also Figure 2 and Figure 3 The bucket teeth 31 are respectively installed on both sides of the end of the digging bucket 3 away from the bulldozer 1, and the end of the mixing chamber 32 close to the bulldozer 1 is installed with a hollow plate 321. The bucket teeth 31 are located on both sides of the digging bucket 3, and can push the soil inside the digging bucket 3 along the edge of the digging bucket 3 into the digging bucket 3, avoiding the edge that the digging structure 5 cannot scrape, increasing the resistance of the digging bucket 3 to move forward, and the hollow plate 321 at the rear facilitates the discharge of the purified soil.

[0029] See also Figure 1 The bulldozer 1 is provided with a primary hydraulic rod 12, which is connected to a support arm 11, and a secondary hydraulic rod 13 is provided on the support arm 11, and the secondary hydraulic rod 13 is connected to a mixing chamber 32. The primary hydraulic rod 12 and the support arm 11 form a triangle, which can push the support arm 11 to rotate and change the height of the digging bucket 3. The secondary hydraulic rod 13 and the support arm 11 form another triangle, which can change the tilt angle of the digging bucket 3 by changing its own length.

[0030] The working principle of the utility model is:

[0031] The device uses a bulldozer 1 to push the digging bucket 3 to move. The digging structure 5 inside the digging bucket 3 can dig down the contaminated soil from the side and crush it. The raw material box 2 located behind the digging bucket 3 contains a reducing agent, which is continuously injected into the digging bucket 3 and mixed with the soil inside. After the mixed reducing agent and soil are fully mixed again through the mixing structure 4, the soil can be purified, and the soil can be dynamically discharged after purification. The device can continuously and dynamically purify the soil at the location of the contaminated soil, with high purification efficiency and more thorough purification. It is also flexible and convenient to use, and has the effect of reducing the difficulty and cost of operation.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalents of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An enhanced reduction treatment device for contaminated soil purification, comprising a bulldozer and a digging bucket; characterized in that: The bulldozer is connected to an excavator bucket via an arm, an excavating structure is installed inside the excavator bucket, a protruding mixing chamber is installed at one end of the excavator bucket close to the bulldozer, and a mixing structure is installed in the mixing chamber; a raw material box is installed outside the excavator bucket, a plurality of discharge pipes pointing to the excavating structure are installed inside the excavator bucket, and the discharge pipes are connected to the raw material box; the excavating structure includes two turntables rotatably installed inside the excavator bucket, a plurality of annularly distributed scrapers are vertically installed on the turntable, and the scrapers are inclined relative to the central axis of the turntable.

2. The enhanced reduction treatment device for contaminated soil purification according to claim 1, characterized in that: The turntable is connected to a rotating shaft, a transmission gear is installed on the rotating shaft, a driven gear connected to the transmission gear is installed inside the digging bucket, a primary motor is installed on the digging bucket, and the primary motor is connected to the driven gear.

3. The enhanced reduction treatment device for purification of contaminated soil according to claim 1, characterized in that: A support ring connecting the scrapers is installed inside the scraper, and cutters distributed in an annular manner are installed inside the support ring.

4. The enhanced reduction treatment device for contaminated soil purification according to claim 1, characterized in that: The mixing structure comprises mounting plates, which are rotatably mounted at two ends of the mixing chamber respectively, and a plurality of scrapers distributed in an annular manner are connected between the mounting plates, and the cross-sectional shape of the scrapers is crescent-shaped.

5. The enhanced reduction treatment device for purification of contaminated soil according to claim 4, characterized in that: A secondary motor is installed on one side of the mixing chamber, and pulleys are installed on the secondary motor and the mounting plate respectively, and the pulleys are connected through a transmission belt.

6. The enhanced reduction treatment device for purification of contaminated soil according to claim 1, characterized in that: Bucket teeth are respectively installed on both sides of one end of the digging bucket away from the bulldozer, and a hollow plate is installed on one end of the mixing chamber close to the bulldozer.

7. The enhanced reduction treatment device for purification of contaminated soil according to claim 1, characterized in that: The bulldozer is provided with a primary hydraulic rod, the primary hydraulic rod is connected to a support arm, the support arm is provided with a secondary hydraulic rod, and the secondary hydraulic rod is connected to a mixing chamber.

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