An environmentally optimized contaminated soil regeneration device and its use method

Abstract

The present invention relates to the technical field of contaminated soil regeneration, and specifically to an environmentally optimized contaminated soil regeneration device and a method for using the same. The environmentally optimized contaminated soil regeneration device comprises a box body and a stirring tank arranged in the box body. A spraying mechanism arranged in the box body can spray a treatment reagent onto the soil so that the treatment reagent reacts chemically with harmful substances in the soil. Specifically, the arrangement of the disc body and the spraying mechanism is used to premix the soil and the treatment reagent. The soil is added to the stirring tank in multiple times through the disc body. Compared with adding the soil and the treatment reagent to the stirring tank at one time for centralized stirring, the uniformity of the distribution of the treatment reagent in the soil can be significantly improved, thereby improving the sufficiency of the reaction between the treatment reagent and the harmful substances in the soil, and ensuring comprehensive soil treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of contaminated soil regeneration, and in particular to an environment-optimized contaminated soil regeneration device and a use method thereof. Background Art

[0002] Heavy metal soil pollution is often found in cultivated land, industrial sites, mining areas and their surrounding areas. The ultimate goal of soil remediation is to restore the ecological service function of the soil so that it can support healthy ecosystems and biodiversity. Therefore, the contaminated soil needs to be regenerated.

[0003] In general soil regeneration treatment devices, the soil to be treated and the corresponding treatment reagents are usually added into a container and centrally stirred so that the treatment reagents react with the heavy metal pollutants in the soil to achieve the purpose of remediation. However, this treatment method often results in insufficient reaction between the reagents and the pollutants in the soil due to the fixed stirring method, which in turn makes the soil remediation treatment effect poor. Summary of the invention

[0004] The object of the present invention is to provide an environmentally optimized contaminated soil regeneration device and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An environmentally optimized contaminated soil regeneration device comprises a box body and a stirring tank arranged in the box body, wherein the stirring tank is provided with a stirring mechanism for mixing soil and a treatment agent;

[0007] The environmentally optimized contaminated soil regeneration device also includes:

[0008] A disc body is arranged at the top of the mixing tank, the disc body is connected to a threaded driving mechanism installed in the box body, the threaded driving mechanism can drive the disc body to rotate forward or reversely at the top of the mixing tank, and a through hole is also arranged at the center of the disc body for allowing soil to enter the mixing tank;

[0009] A scraping mechanism is installed in the box and located above the disc. When the disc rotates, the scraping mechanism can cause the soil in the disc to spread toward the periphery of the disc or gather toward the center of the disc, so as to flatten the soil on the disc;

[0010] A blocking mechanism is provided on the mixing tank and is used to switch the blocking and conducting states of the through hole. The blocking mechanism and the scraping mechanism are connected to the threaded driving mechanism via a form switching mechanism. When the threaded driving mechanism is working in the forward direction, the scraping mechanism performs a spreading action on the soil in the disk body, and the spraying mechanism provided in the box body sprays the treatment reagent on the soil, and the through hole remains in a blocked state. On the contrary, the form switching mechanism causes the through hole to be conducted and the scraping mechanism to contact the bottom wall of the disk body, so that the scraping mechanism gathers the soil in the disk body to the through hole, thereby causing the soil to enter the mixing tank.

[0011] As a further solution of the present invention: the scraper mechanism includes a guide rod installed on the top wall of the box body, a sleeve slidably engaged with the guide rod, and a plurality of scraper blades equidistantly arranged on the sleeve along the circumference, and the length direction of the scraper blade is perpendicular to the axial space of the sleeve, when the threaded drive mechanism works in the forward direction, there is a gap between the scraper blade and the bottom wall of the disk body, and when the threaded drive mechanism works in the reverse direction, the gap is eliminated.

[0012] As a further solution of the present invention: the sealing mechanism includes a cross arm slidably arranged on the stirring tank and a disc arranged at one end of the cross arm located inside the stirring tank, the disc is sealingly and slidingly fitted with the bottom of the disc body, the end of the cross arm away from the disc is connected to the sleeve through a connecting rod, the two ends of the connecting rod are respectively rotatably connected to the sleeve and the cross arm, and the cross arm is also connected to a vertical arm, the vertical arm is connected to the shape switching mechanism, and the shape switching mechanism can drive the cross arm to move radially along the stirring tank so that the disc and the through hole overlap or staggered.

[0013] As a further solution of the present invention: the threaded drive mechanism comprises a screw rod rotatably mounted in the housing, a threaded sleeve sleeved on the screw rod and threadedly connected to the screw rod, and a drive motor mounted on the inner wall of the housing, wherein the output end of the drive motor is connected to the screw rod;

[0014] Among them, the threaded sleeve is connected to the driving sleeve through a connecting plate, and the driving sleeve is slidably fitted with a vertical shaft rotatably installed in the box body. A gear is installed at one end of the vertical shaft away from the bottom wall of the box body, and the gear is meshed with a gear ring arranged on the disk body. A sliding fitting structure is provided between the driving sleeve and the vertical shaft.

[0015] As a further solution of the present invention: the sliding fitting structure includes a boss fixedly arranged on the inner wall of the driving sleeve and a groove body arranged on the outer wall of the vertical shaft and adapted to the boss, the boss extends into the groove body and is slidably connected with the vertical shaft, the groove body includes a first groove section and a second groove section connected, the first groove section and the second groove section are spirally arranged, and the rotation directions of the two are opposite, and the length of the second groove section is greater than the length of the first groove section.

[0016] As a further solution of the present invention: the spraying mechanism includes two cylinders installed on the top wall of the box body, a lifting plate arranged at the movable end of the cylinder and a slide plate slidably arranged on the lifting plate, and the slide plate is fixed to the movable end of the electric push rod installed on the lifting plate, wherein a plurality of nozzles are equidistantly provided on the side of the slide plate for spraying the treatment reagent onto the disk body, and a plurality of material-pickling pieces are also equidistantly provided on the bottom of the slide plate.

[0017] As a further solution of the present invention: the link plate is connected to an assembly arm, a slider is slidably provided on the assembly arm, the form switching mechanism comprises an assembly cylinder arranged on the slider and having conductive ends, and a cross bar slidably sleeved with the assembly cylinder, the tail end of the cross bar is fixed to a follower block slidably provided on the vertical arm, and the cross bar is also fixed to a ring body slidably provided inside the assembly cylinder;

[0018] The interior of the assembly cylinder is also provided with a first spring and a second spring which are sleeved on the outer circumference of the cross bar. The head ends of the first spring and the second spring are connected to the ring body, and the tail ends abut against the inner wall of the assembly cylinder. The outer wall of the assembly cylinder and the head end of the cross bar are respectively fixed with a first column and a second column. The first column and the second column are connected with a limiting structure provided in the box body.

[0019] As a further solution of the present invention: the limiting structure includes a fixed plate installed inside the box body, the fixed plate is provided with an inclined groove and a rectangular groove, the first column and the second column respectively extend into the inclined groove and the rectangular groove and are slidably connected to the fixed plate.

[0020] A method for using the environmentally optimized contaminated soil regeneration device comprises the following steps:

[0021] Step 1, transporting a certain amount of soil onto the disc;

[0022] Step 2: The threaded drive mechanism works in a forward direction to drive the disc to rotate, the scraper mechanism smoothes the soil on the disc, and the spraying mechanism sprays the treatment reagent on the smoothed soil;

[0023] Step 3: The forward working process of the thread drive mechanism is completed, and the shape switching mechanism is triggered, causing the through hole to switch from the blocked state to the conductive state, and the scraping mechanism contacts the bottom wall of the disc;

[0024] Step 4: The threaded drive mechanism enters the reverse working process, and the scraper mechanism gathers the soil on the disc into the through hole, so that the soil is transferred to the mixing tank for mixing and reaction;

[0025] Step 5: The reverse working process of the thread drive mechanism is completed, the through hole is restored to the blocked state, and the scraper mechanism is lifted up and reset;

[0026] Step 6: Repeat the above steps until the soil in the mixing tank reaches the preset amount.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] During operation, the soil is fed into the mixing tank in batches through the disc, and the soil is pre-mixed on the disc. Specifically, a scraping mechanism first evenly smoothes the soil on the disc, and then a spraying mechanism sprays the treatment agent into the soil.

[0029] During the process of spraying the treatment reagent, multiple annular grooves can be formed on the soil, and the treatment reagent is sprayed into the grooves. The positions of the grooves can be changed, ensuring the comprehensiveness of the spraying of the treatment reagent and the premixing effect of the treatment reagent and the soil.

[0030] Whenever the premixing process is completed, the form switching mechanism is triggered to prompt the blocking mechanism to automatically open the through hole, and at the same time the scraping mechanism contacts the bottom wall of the disc body. The scraping mechanism can gather the soil that has completed the premixing process into the through hole, so that the soil falls into the mixing tank for further mixing and reaction;

[0031] Therefore, compared with adding the soil and treatment reagents into a mixing tank for centralized mixing at one time, the present application can significantly improve the uniformity of the distribution of the treatment reagents in the soil, thereby improving the sufficiency of the reaction between the treatment reagents and harmful substances in the soil, and ensuring comprehensive soil treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the structure of the contaminated soil regeneration device optimized for the environment.

[0033] Figure 2 Schematic diagram of the internal structure of the box in the environmentally optimized contaminated soil regeneration device.

[0034] Figure 3 Schematic diagram of the structure of the environmentally optimized contaminated soil regeneration device after removing the box.

[0035] Figure 4Schematic diagram of the structure from another angle after removing the box body in the environmentally optimized contaminated soil regeneration device.

[0036] Figure 5 Structural exploded diagram of the threaded drive mechanism in the environmentally optimized contaminated soil regeneration device.

[0037] Figure 6 Schematic diagram of the connection relationship between the scraping mechanism and the sealing mechanism in the environmentally optimized contaminated soil regeneration device.

[0038] Figure 7 for Figure 6 Schematic diagram of the structure from another angle.

[0039] Figure 8 Schematic diagram of the structure of the fixed plate in the environmentally optimized contaminated soil regeneration device.

[0040] Fig. 9 for Figure 4 A magnified view of the structure at center.

[0041] In the figure: 1, box body; 2, mixing tank; 3, feed pipe; 4, plate; 401, through hole; 5, scraper; 6, guide rod; 7, sleeve; 8, drive motor; 9, threaded sleeve; 10, vertical shaft; 1001, first slot section; 1002, second slot section; 11, gear; 12, gear ring; 13, connecting plate; 14, drive sleeve; 15, assembly arm; 16, assembly cylinder; 17, cross bar; 18, ring body; 19, first spring; 20, second spring ; 21. First cylinder; 22. Second cylinder; 23. Slider; 24. Follower block; 25. Cross arm; 26. Disc; 27. Vertical arm; 28. Connecting rod; 29. ​​Fixed plate; 2901. First groove; 2902. Second groove; 2903. Third groove; 2904. Fourth groove; 2905. Inclined groove; 30. Screw; 31. Cylinder; 32. Lifting plate; 33. Slide plate; 34. Electric push rod; 35. Material-pickup sheet; 36. Nozzle. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In addition, when an element in the present invention is referred to as being "disposed on" or "disposed on" another element, it may be directly on the other element or there may be a centered 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 centered element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0044] See also Figure 1-Figure 9 In an embodiment of the present invention, an environmentally optimized contaminated soil regeneration device comprises a box body 1 and a stirring tank 2 disposed in the box body 1, and the stirring tank 2 is provided with a stirring mechanism for mixing soil and a treatment agent;

[0045] The environmentally optimized contaminated soil regeneration device also includes:

[0046] A disc 4 is provided at the top of the mixing tank 2. The disc 4 is connected to a threaded drive mechanism installed in the box 1. The threaded drive mechanism can drive the disc 4 to rotate forward or reversely at the top of the mixing tank 2. A through hole 401 for allowing soil to enter the mixing tank 2 is also provided at the center of the disc 4.

[0047] It should be noted that a feed pipe 3 is also installed on the box body 1, and the feed pipe 3 is connected to an external feeding device. The feeding device and the auger conveyor have a discharge port connected to the feed pipe 3, and are used to intermittently deliver a certain amount of soil to be processed to the disc body 4 through the feed pipe 3 during the working process;

[0048] a scraper mechanism installed in the box body 1 and located above the disk body 4, and when the disk body 4 rotates, the scraper mechanism can cause the soil in the disk body 4 to spread toward the periphery of the disk body 4 or gather toward the center of the disk body 4, so as to flatten the soil on the disk body 4;

[0049] The blocking mechanism is arranged on the mixing tank 2 and is used to switch the blocking and conducting states of the through hole 401. The blocking mechanism and the scraping mechanism are connected to the threaded driving mechanism via a form switching mechanism. When the threaded driving mechanism is working in the forward direction, the scraping mechanism performs a spreading action on the soil in the disk body 4, and the spraying mechanism arranged in the box body 1 sprays the treatment reagent on the soil, and the through hole 401 remains in a blocked state. On the contrary, the form switching mechanism causes the through hole 401 to be conducted and the scraping mechanism to contact the bottom wall of the disk body 4, so that the scraping mechanism gathers the soil in the disk body 4 to the through hole 401, thereby causing the soil to enter the mixing tank 2.

[0050] Secondly, the stirring mechanism includes a stirring shaft rotatably installed in the stirring tank 2 and a stirring blade arranged on the stirring shaft. A driving motor for driving the stirring shaft to rotate is installed at the bottom of the stirring tank 2. In the present application, the setting of the disk body 4 and the spraying mechanism is used to premix the soil and the treatment agent. The soil is added to the stirring tank 2 through the disk body 4 in multiple times. Compared with adding the soil and the treatment agent to the stirring tank 2 at one time for centralized stirring, the uniformity of the distribution of the treatment agent in the soil can be significantly improved, thereby improving the sufficiency of the reaction between the treatment agent and the harmful substances in the soil, and ensuring comprehensive soil treatment.

[0051] Specifically, during operation, the thread drive mechanism works in the forward direction. During this process, the disc body 4 first rotates clockwise (see Figure 5 ), and then rotate counterclockwise, the scraping mechanism is in a non-contact state with the bottom wall of the disc 4, the scraping mechanism causes the soil on the disc 4 to be smoothed, and the soil is evenly distributed on the disc 4, and after the soil is smoothed, the spraying mechanism sprays the treatment agent on the soil;

[0052] Subsequently, after the forward working process of the threaded drive mechanism is completed, the form switching mechanism is triggered, which will prompt the blocking mechanism to switch the blocking state of the through hole 401 to the conducting state, and the scraper mechanism contacts the bottom wall of the disc 4. Then, the threaded drive works in the reverse direction, and the disc 4 rotates clockwise and then counterclockwise. During this process, when the disc 4 rotates clockwise, the scraper mechanism can gather the soil sprayed with the treatment agent to the center of the disc 4, so that the soil on the disc 4 falls into the mixing tank 2 through the through hole 401 for mixing treatment.

[0053] In general, the soil treatment method of the present application is to use a special treatment reagent to mix with the soil, so that the treatment reagent reacts with the heavy metal ions or metal complexes in the soil, so that the heavy metals are dissolved or desorbed from the surface of the soil particles. For example, the acidic solution can destroy the complex formed by the functional groups on the surface of the soil and the heavy metals through protonation, thereby achieving desorption. The chelating agent (such as EDTA, citric acid, etc.) in the treatment reagent forms a stable complex with the heavy metal ions through its polycarboxyl structure, thereby improving the solubility of the heavy metal and promoting its migration from the soil. In addition, the anions in the treatment reagent (such as carbonates, phosphates, etc.) can combine with heavy metal ions to form insoluble compound precipitation, thereby reducing the heavy metal content in the soil. The specific components of the treatment reagent are not specifically limited in this application, and can be configured by professionals according to actual needs.

[0054] Please refer again Figure 6The scraper mechanism includes a guide rod 6 installed on the top wall of the box body 1, a sleeve 7 slidably fitted with the guide rod 6, and a plurality of scraper blades 5 equidistantly arranged on the sleeve 7 along the circumference, and the length direction of the scraper blade 5 is perpendicular to the axial space of the sleeve 7. When the threaded drive mechanism works forward, there is a gap between the scraper blade 5 and the bottom wall of the disk body 4. When the threaded drive mechanism works reversely, the gap is eliminated.

[0055] See also Figure 5 When the soil for top material is piled on the disc 4, the disc 4 rotates clockwise and counterclockwise in succession during the forward working process of the threaded drive mechanism. When rotating clockwise, under the action of the scraper blade 5, the soil on the disc 4 that is higher than the bottom end of the scraper blade 5 moves toward the center of the disc 4. When rotating counterclockwise, the soil on the disc 4 that is higher than the bottom end of the scraper blade 5 diffuses toward the periphery of the disc 4. Then, after the disc 4 completes the clockwise and counterclockwise rotation processes, the soil on the disc 4 can be effectively smoothed, ensuring the uniformity of the subsequent spraying of the treatment agent on the soil by the spraying mechanism;

[0056] Furthermore, after the forward work of the threaded drive mechanism is completed, the form switching mechanism can drive the blocking mechanism to switch the blocking state of the through hole 401 to the conducting state, and the blocking mechanism drives the sleeve 7 to slide downward on the guide rod 6, so that the bottom end of the scraper piece 5 is inserted into the soil and contacts the bottom wall of the disk body 4. Therefore, when the threaded drive mechanism subsequently works in the reverse direction and the disk body 4 rotates clockwise, under the action of multiple scraper pieces 5, the soil in the disk body 4 can gather toward the center of the disk body 4 and enter the mixing tank 2 through the through hole 401 for further mixing and reaction.

[0057] Please refer again Figure 4 and Figure 6 The blocking mechanism includes a cross arm 25 slidably arranged on the stirring tank 2 and a disc 26 arranged at one end of the cross arm 25 located inside the stirring tank 2, the disc 26 is sealingly and slidingly fitted with the bottom of the disk body 4, and the end of the cross arm 25 away from the disc 26 is connected to the sleeve 7 through a connecting rod 28, and the two ends of the connecting rod 28 are respectively rotatably connected to the sleeve 7 and the cross arm 25, and the cross arm 25 is also connected to a vertical arm 27, and the vertical arm 27 is connected to the form switching mechanism, and the form switching mechanism can drive the cross arm 25 to move along the radial direction of the stirring tank 2 so that the disc 26 overlaps or staggers with the through hole 401.

[0058] After the forward working process of the threaded drive mechanism is completed, the form switching mechanism is triggered, and the vertical arm 27 drives the horizontal arm 25 to slide toward the outside of the mixing tank 2. Accordingly, the disc 26 moves with the horizontal arm 25, and the disc 26 is staggered with the through hole 401. The through hole 401 is switched from a blocked state to a conductive state. The horizontal arm 25 also drives the sleeve 7 to slide downward on the guide rod 6 through the connecting rod 28, so that the bottom ends of the plurality of scraper blades 5 contact the bottom wall of the disk body 4, so that when the threaded drive mechanism works in the reverse direction, the scraper blades 5 cooperate with the clockwise rotation of the disk body 4 to cause the soil sprayed with the treatment agent to gather at the center of the disk body 4, and then enter the mixing tank 2 through the through hole 401 for further mixing and reaction.

[0059] Please refer again Figure 3 , Figure 4 as well as Figure 5 The thread drive mechanism includes a screw rod 30 rotatably mounted in the housing 1, a threaded sleeve 9 sleeved on the screw rod 30 and threadedly connected to the screw rod 30, and a drive motor 8 mounted on the inner wall of the housing 1, and the output end of the drive motor 8 is connected to the screw rod 30. The threaded sleeve 9 is connected to a drive sleeve 14 through a connecting plate 13, and the drive sleeve 14 is slidably engaged with a vertical shaft 10 rotatably mounted in the housing 1. A gear 11 is installed at one end of the vertical shaft 10 away from the bottom wall of the housing 1, and the gear 11 is meshed with a gear ring 12 arranged on the disk body 4. A sliding matching structure is provided between the drive sleeve 14 and the vertical shaft 10. The sliding fitting structure includes a boss fixedly arranged on the inner wall of the driving sleeve 14 and a groove body arranged on the outer wall of the vertical shaft 10 and adapted to the boss, the boss extends into the groove body and is slidingly connected with the vertical shaft 10, the groove body includes a first groove section 1001 and a second groove section 1002 connected, the first groove section 1001 and the second groove section 1002 are spirally arranged, and the rotation directions of the two are opposite, and the length of the second groove section 1002 is greater than the length of the first groove section 1001.

[0060] During operation, the driving motor 8 drives the screw rod 30 to rotate in the forward direction, the threaded sleeve 9 is threadedly matched with the screw rod 30 to move downward, and drives the driving sleeve 14 to slide downward on the vertical shaft 10 through the connecting plate 13, so that the boss passes through the first groove section 1001 and the second groove section 1002 in sequence, and slides with the vertical shaft 10, so that the vertical shaft 10 can rotate, and the vertical shaft 10 can drive the disc 4 to rotate on the top of the mixing tank 2 through the gear 11 and the gear ring 12;

[0061] See also Figure 5When the protruding column passes through the first slot section 1001, the vertical shaft 10 drives the gear 11 to rotate counterclockwise, and the gear 11 drives the disk body 4 to rotate clockwise through the gear ring 12. When the protruding column passes through the second slot section 1002, the disk body 4 rotates counterclockwise;

[0062] The purpose of the length of the second groove section 1002 being greater than that of the first groove section 1001 is that the disc body 4 needs to rotate clockwise and counterclockwise to ensure that the soil thereon is completely smoothed. Specifically, after the movement distance of the protrusion on the second groove section 1002 reaches the length of the first groove section 1001 (the disc body 4 completes clockwise and counterclockwise rotations at the same angle), the spraying mechanism starts to work and starts to spray the treatment agent.

[0063] Please refer again Fig. 9 The spraying mechanism includes two cylinders 31 installed on the top wall of the box body 1, a lifting plate 32 arranged at the movable end of the cylinder 31, and a slide plate 33 slidably arranged on the lifting plate 32, wherein the slide plate 33 is fixed to the movable end of the electric push rod 34 installed on the lifting plate 32, wherein a plurality of nozzles 36 are equidistantly arranged on the side of the slide plate 33 for spraying the treatment reagent onto the disk body 4, and a plurality of material-dispensing pieces 35 are also equidistantly arranged on the bottom of the slide plate 33.

[0064] During the forward operation of the threaded drive mechanism, after the soil on the disk body 4 is smoothed, that is, after the movement distance of the boss on the second groove section 1002 reaches the length of the first groove section 1001, the cylinder 31 drives the lifting plate 32 to descend until the material-pickup piece 35 is inserted into the smoothed soil on the disk body 4. As the boss continues to move in the second groove section 1002, that is, the disk body 4 continues to rotate, the plurality of material-pickup pieces 35 cause a plurality of annular grooves to be formed on the soil in the disk body 4, and the nozzle 36 sprays the treatment reagent into the groove. In addition, after the annular grooves are formed, the electric push rod 34 drives the slide plate 33 to slide on the lifting plate 32. The sliding distance of the slide plate 33 is half of the distance between two adjacent material-pickup pieces 35. Therefore, the position of the subsequent annular grooves changes, thereby ensuring the comprehensiveness of the spraying of the treatment reagent and the premixing effect of the treatment reagent and the soil.

[0065] Please refer again Figure 6 and Figure 8The connecting plate 13 is connected to an assembly arm 15, on which a slider 23 is slidably provided. The form switching mechanism includes an assembly tube 16 disposed on the slider 23 and having two ends connected thereto, and a cross bar 17 slidably fitted with the assembly tube 16. The tail end of the cross bar 17 is fixed to a follower block 24 slidably provided on the vertical arm 27, and the cross bar 17 is also fixed to a ring body 18 slidably provided inside the assembly tube 16. The assembly tube 16 is also provided with a first spring 19 and a second spring 20 sleeved on the outer periphery of the cross bar 17. The first ends of the first spring 19 and the second spring 20 are connected to the ring body 18, and the tail ends are in contact with the inner wall of the assembly tube 16. The outer wall of the assembly tube 16 and the head end of the cross bar 17 are respectively fixed with a first column 21 and a second column 22. The first column 21 and the second column 22 are connected to a limiting structure provided in the box body 1. The limiting structure includes a fixed plate 29 installed inside the box 1, and the fixed plate 29 is provided with an inclined groove 2905 and a rectangular groove. The first column 21 and the second column 22 extend into the inclined groove 2905 and the rectangular groove respectively and are slidably connected to the fixed plate 29.

[0066] In order to facilitate the description of the movement process of each component, the rectangular groove is divided into a first groove 2901, a second groove 2902, a third groove 2903 and a fourth groove 2904 which are connected. Figure 4 In the state shown in the figure, the first column 21 is located at the upper end of the inclined groove 2905, and the second column 22 is located at the connecting inflection point of the first groove 2901 and the fourth groove 2904;

[0067] When the threaded drive mechanism works in the forward direction, the link plate 13 drives the assembly arm 15 to move downward, the cross bar 17 drives the follower block 24 to slide downward on the vertical arm 27, the first column 21 slides with the fixed plate 29 through the inclined groove 2905, so that the assembly cylinder 16 gives way, the assembly cylinder 16 drives the slider 23 to slide away from the link plate 13 on the assembly arm 15, and the second column 22 moves along the first groove 2901 toward the second groove 2902, and accordingly, the first spring 19 is compressed;

[0068] When the forward working process of the threaded drive mechanism ends, the second column 22 reaches the connecting inflection point of the first groove 2901 and the second groove 2902, so the first spring 19 rebounds, causing the second column 22 to transfer from the connecting inflection point of the first groove 2901 and the second groove 2902 to the connecting inflection point of the second groove 2902 and the third groove 2903, and the cross bar 17 pushes the cross arm 25 to slide toward the outside of the mixing tank 2 through the follower block 24 and the vertical arm 27, and the disc 26 is staggered with the through hole 401 to connect the through hole 401, and at the same time, the cross arm 25 drives the sleeve 7 to slide downward on the guide rod 6 through the connecting rod 28, so that the bottom ends of the plurality of scraper blades 5 contact the bottom wall of the disc body 4;

[0069] Subsequently, the threaded drive mechanism works in the reverse direction. Under the action of the scraper blade 5, the soil in the disk body 4 is scraped into the mixing tank 2 through the through hole 401 for further mixing and reaction. During this process, the second column 22 moves along the third groove 2903 toward the fourth groove 2904, and the first column 21 slides with the fixed plate 29 through the inclined groove 2905 again, so that the assembly cylinder 16 drives the slider 23 to slide and reset on the assembly arm 15 toward the connecting plate 13, and the second spring 20 is compressed. When the threaded drive mechanism works in the reverse direction, the second column 22 moves along the third groove 2903 toward the fourth groove 2904, and the first column 21 slides and cooperates with the fixed plate 29 through the inclined groove 2905 again, so that the assembly cylinder 16 drives the slider 23 to slide and reset on the assembly arm 15 toward the connecting plate 13, and the second spring 20 is compressed. When the operation process is finished, the second column 22 reaches the connecting inflection point between the third groove 2903 and the fourth groove 2904. At this time, the second spring 20 rebounds, causing the second column 22 to move along the fourth groove 2904 and return to the connecting inflection point between the first groove 2901 and the fourth groove 2904. The cross bar 17 pulls the cross arm 25 to slide toward the inside of the mixing tank 2 through the follower block 24 and the vertical arm 27, and the through hole 401 returns to the blocked state. The cross arm 25 drives the sleeve 7 to slide downward on the guide rod 6 through the connecting rod 28, and the scraper sheet 5 is lifted.

[0070] In addition, the present invention also proposes a method for using the environmentally optimized contaminated soil regeneration device, comprising the following steps:

[0071] Step 1: delivering a fixed amount of soil onto the disc 4;

[0072] Step 2: The threaded drive mechanism works in the forward direction to drive the disc 4 to rotate, the scraper mechanism smoothes the soil on the disc 4, and the spraying mechanism sprays the treatment reagent on the smoothed soil;

[0073] Step 3: The forward working process of the thread drive mechanism is completed, and the shape switching mechanism is triggered, causing the through hole 401 to switch from the blocked state to the conductive state, and the scraping mechanism contacts the bottom wall of the disc body 4;

[0074] Step 4: the threaded drive mechanism enters the reverse working process, and the scraper mechanism gathers the soil on the disc 4 into the through hole 401, so that the soil is transferred to the mixing tank 2 for mixing and reaction;

[0075] Step 5: The reverse working process of the thread drive mechanism is completed, the through hole 401 is restored to the blocked state, and the scraper mechanism is lifted up and reset;

[0076] Step six, repeat the above steps until the soil in the mixing tank 2 reaches a preset amount.

[0077] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0078] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An environmentally optimized contaminated soil regeneration device, comprising a box body and a stirring tank arranged in the box body, wherein the stirring tank is provided with a stirring mechanism for mixing soil and a treatment agent; A disc body is arranged at the top of the mixing tank, the disc body is connected to a threaded driving mechanism installed in the box body, the threaded driving mechanism can drive the disc body to rotate forward or reversely at the top of the mixing tank, and a through hole is also arranged at the center of the disc body for allowing soil to enter the mixing tank; A scraping mechanism is installed in the box and located above the disc; A blocking mechanism is provided on the mixing tank and is used to switch the blocking and conducting states of the through hole. The blocking mechanism and the scraping mechanism are connected to the threaded driving mechanism via a form switching mechanism. When the threaded driving mechanism is working in the forward direction, the scraping mechanism performs a spreading action on the soil in the pan body, and the spraying mechanism provided in the box body sprays the treatment reagent on the soil, and the through hole remains blocked. On the contrary, the form switching mechanism causes the through hole to be conducted and the scraping mechanism to contact the bottom wall of the pan body, so that the scraping mechanism gathers the soil in the pan body to the through hole, causing the soil to enter the mixing tank; The blocking mechanism includes a cross arm slidably arranged on the stirring tank and a disc arranged at one end of the cross arm located inside the stirring tank, the disc is sealingly and slidingly fitted with the bottom of the disc body, the end of the cross arm away from the disc is connected to the sleeve through a connecting rod, the two ends of the connecting rod are respectively rotatably connected to the sleeve and the cross arm, and the cross arm is also connected to a vertical arm, the vertical arm is connected to the form switching mechanism, and the form switching mechanism can drive the cross arm to move along the radial direction of the stirring tank so that the disc and the through hole overlap or stagger.

2. The environmentally optimized contaminated soil regeneration device according to claim 1 is characterized in that: The scraper mechanism includes a guide rod installed on the top wall of the box body, a sleeve slidably fitted with the guide rod, and a plurality of scraper blades equidistantly arranged on the sleeve along the circumference, and the length direction of the scraper blade is perpendicular to the axial space of the sleeve. When the threaded drive mechanism works forward, there is a gap between the scraper blade and the bottom wall of the disk body, and when the threaded drive mechanism works reversely, the gap is eliminated.

3. The environmentally optimized contaminated soil regeneration device according to claim 1 is characterized in that: The thread drive mechanism comprises a screw rod rotatably mounted in the box body, a threaded sleeve sleeved on the screw rod and threadedly connected to the screw rod, and a drive motor mounted on the inner wall of the box body, wherein the output end of the drive motor is connected to the screw rod; Among them, the threaded sleeve is connected to the driving sleeve through a connecting plate, and the driving sleeve is slidably fitted with a vertical shaft rotatably installed in the box body. A gear is installed at one end of the vertical shaft away from the bottom wall of the box body, and the gear is meshed with a gear ring arranged on the disk body. A sliding fitting structure is provided between the driving sleeve and the vertical shaft.

4. The environmentally optimized contaminated soil regeneration device according to claim 3 is characterized in that: The sliding fitting structure includes a boss fixedly arranged on the inner wall of the driving sleeve and a groove body arranged on the outer wall of the vertical shaft and adapted to the boss, the boss extends into the groove body and is slidably connected with the vertical shaft, the groove body includes a first groove section and a second groove section connected, the first groove section and the second groove section are spirally arranged, and the rotation directions of the two are opposite, and the length of the second groove section is greater than the length of the first groove section.

5. The environmentally optimized contaminated soil regeneration device according to claim 1 is characterized in that: The spraying mechanism includes two cylinders installed on the top wall of the box body, a lifting plate arranged at the movable end of the cylinder and a slide plate slidably arranged on the lifting plate, wherein the slide plate is fixed to the movable end of the electric push rod installed on the lifting plate, wherein a plurality of nozzles are equidistantly arranged on the side of the slide plate for spraying the treatment reagent onto the disk body, and a plurality of material-pickling pieces are also equidistantly arranged on the bottom of the slide plate.

6. The environmentally optimized contaminated soil regeneration device according to claim 4, characterized in that: The connecting plate is connected to an assembly arm, on which a slider is slidably provided. The form switching mechanism includes an assembly cylinder which is arranged on the slider and has conductive ends, and a cross bar which is slidably fitted with the assembly cylinder. The tail end of the cross bar is fixed to a follower block which is slidably provided on the vertical arm, and the cross bar is also fixed to a ring body which is slidably provided inside the assembly cylinder.

7. The environmentally optimized contaminated soil regeneration device according to claim 6, characterized in that: The interior of the assembly cylinder is also provided with a first spring and a second spring which are sleeved on the outer circumference of the cross bar. The head ends of the first spring and the second spring are connected to the ring body, and the tail ends abut against the inner wall of the assembly cylinder. The outer wall of the assembly cylinder and the head end of the cross bar are respectively fixed with a first column and a second column. The first column and the second column are connected with a limiting structure provided in the box body.

8. The environmentally optimized contaminated soil regeneration device according to claim 7, characterized in that: The limiting structure includes a fixed plate installed inside the box body, the fixed plate is provided with an inclined groove and a rectangular groove, the first column and the second column extend into the inclined groove and the rectangular groove respectively and are slidably connected with the fixed plate.

9. A method for using the environmentally optimized contaminated soil regeneration device as claimed in claim 1, characterized in that: The following steps are involved: Step 1, transporting a certain amount of soil onto the disc; Step 2: The threaded drive mechanism works in a forward direction to drive the disc to rotate, the scraper mechanism smoothes the soil on the disc, and the spraying mechanism sprays the treatment reagent on the smoothed soil; Step 3: The forward working process of the thread drive mechanism is completed, and the shape switching mechanism is triggered, causing the through hole to switch from the blocked state to the conductive state, and the scraping mechanism contacts the bottom wall of the disc; Step 4: The threaded drive mechanism enters the reverse working process, and the scraper mechanism gathers the soil on the disc into the through hole, so that the soil is transferred to the mixing tank for mixing and reaction; Step 5: The reverse working process of the thread drive mechanism is completed, the through hole is restored to the blocked state, and the scraper mechanism is lifted up and reset; Step 6: Repeat the above steps until the soil in the mixing tank reaches the preset amount.

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