Leaching device for soil remediation and soil remediation method

Abstract

The present invention relates to the technical field of soil pollution remediation, specifically to a leaching device for soil remediation and a soil remediation method. The leaching device includes a base and a material passing cylinder. A transfer cavity is arranged inside the material passing cylinder. An inlet is arranged above the transfer cavity, and the inlet extends vertically along the tangent direction of the transfer cavity. An outlet is arranged at the bottom of the transfer cavity. The outlet is connected to a mixing cylinder arranged below the material passing cylinder. A plurality of spray heads are arranged on the periphery of the mixing cylinder to spray the soil. A first rotating shaft is rotatably installed at the axis of the material passing cylinder. A mounting seat is coaxially installed on the first rotating shaft. A plurality of partition plates are arranged on the periphery of the mounting seat. The partition plates surround the mounting seat at equal angles and are attached to the inner wall of the transfer cavity. In this technical solution, the soil enters the space formed by two adjacent partition plates and the inner wall of the transfer cavity and presses down the partition plates to rotate the first rotating shaft, so as to realize the batch feeding of the soil passing through the inlet into the mixing cylinder to contact the spraying liquid sprayed by the spray heads, and improve the contact effect between the soil and the spraying liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of soil pollution remediation, and particularly to a leaching device for soil remediation and a soil remediation method. Background Art

[0002] Soil leaching technology refers to injecting a leaching solution that can promote the dissolution or migration of soil pollutants into the contaminated soil, allowing it to flow through the soil layer to be treated, so as to dissolve, separate and treat the pollutants from the soil, and then treating and recycling the rinsing solution containing pollutants. According to the treatment site, it is divided into in-situ remediation and ex-situ remediation. Leaching agents include inorganic leaching agents, chelating agents, surfactants, oxidants, etc. The leaching solution is selected as a persulfate solution. Persulfate is a common type of oxidant, and the activation of persulfate has been widely developed in the field of environmental pollution treatment.

[0003] When the existing ex-situ leaching remediation device is in use, due to the need to continuously transport a large amount of soil, it usually results in incomplete contact with the leaching solution. Subsequently, it is soaked in the leaching solution to allow the leaching solution to penetrate into the soil interior for remediation. The overall rhythm is slow, affecting the remediation efficiency. Summary of the Invention

[0004] In view of the above problems, it is necessary to provide a leaching device for soil remediation and a soil remediation method for the problems of the existing technology.

[0005] To solve the problems of the existing technology, the technical solution adopted by the present invention is as follows:

[0006] A leaching device for soil remediation includes a base and a material passing cylinder installed on the base. The axis of the material passing cylinder is horizontally arranged. A transfer cavity is provided inside the material passing cylinder. An inlet is provided above the transfer cavity, and the inlet extends vertically along the tangent direction of the transfer cavity. An outlet is provided at the bottom of the transfer cavity. A first rotating shaft is rotatably installed at the axis of the material passing cylinder, and a mounting seat is coaxially installed on the first rotating shaft. The mounting seat is located inside the transfer cavity. A plurality of partition plates are provided on the periphery of the mounting seat. The partition plates are equally angled around the mounting seat and are in contact with the inner wall of the transfer cavity. The soil falling from the inlet enters the space formed between two adjacent partition plates and the inner wall of the transfer cavity and presses down the partition plates to rotate the first rotating shaft. The outlet is connected to a mixing cylinder provided below the material passing cylinder. A plurality of spray heads are provided on the periphery of the mixing cylinder to spray the soil. A plurality of horizontal partition plates are provided below the spray heads in the mixing cylinder, and a material passing opening penetrating the horizontal partition plates is provided on each horizontal partition plate. A vertical second rotating shaft is rotatably installed in the mixing cylinder. A plurality of paddle pieces are provided on the periphery of the second rotating shaft, and the paddle pieces are in contact with the upper and lower horizontal partition plates and the inner wall of the mixing cylinder. The material passing opening at the bottom of the mixing cylinder is connected to a temporary storage cavity provided at the bottom of the base. A movable collection bucket is slidably installed in the temporary storage cavity. The rotation of the second rotating shaft and the cooperation of the paddle pieces push the mixed soil and spray liquid towards the material passing opening and into the movable collection bucket.

[0007] Preferably, a blow tube is provided on the outside of the feeding barrel, and the blow tube is arranged above the discharge port. The axis of the blow tube is parallel to the axis of the first rotating shaft. An air inlet connecting the blow tube and the transfer chamber is provided on the feeding barrel. A third rotating shaft is coaxially installed in the blow tube, and a plurality of fan blades are arranged on the circumference of the third rotating shaft. The third rotating shaft rotates to drive the fan blades to transport gas to the inside of the transfer chamber; a filter is fixedly installed on the air inlet end of the blow tube.

[0008] A first synchronous gear is coaxially mounted on one end of the first rotating shaft located outside the barrel, a second synchronous gear is coaxially mounted on the third rotating shaft, the first synchronous gear and the second synchronous gear are connected via a first synchronous belt transmission, and an avoidance hole for the first synchronous belt to pass through is provided on the hair dryer.

[0009] Preferably, a tooth groove surrounding the outer wall of the second rotating shaft is provided at the bottom of the second rotating shaft, and a third synchronous gear is rotatably installed on the base located outside the mixing barrel. The third synchronous gear and the tooth groove on the outer wall of the second rotating shaft are connected through a second synchronous belt transmission. A first bevel gear is coaxially installed on the upper end of the second synchronous belt. The first bevel gear is meshed with the second bevel gear rotatably installed on the base, and the axis of the second bevel gear is parallel to the axis of the first rotating shaft. A fourth synchronous gear is coaxially arranged on the second bevel gear, and a fifth synchronous gear is coaxially arranged on one end of the first rotating shaft located outside the material barrel, and the fourth synchronous gear and the fifth synchronous gear are connected through the third synchronous belt transmission.

[0010] Preferably, the second bevel gear is rotatably mounted in a plug-in seat provided on the base through a shaft coaxially provided at both ends, and a turning handle is provided at one end of the shaft, and the turning handle extends radially along the shaft.

[0011] Preferably, a dividing plate is provided at the connection between the mixing cylinder and the discharge port, and the dividing plate extends in a horizontal direction perpendicular to the axis of the first rotating shaft and is in a "V" shape with an opening facing downward.

[0012] Preferably, a guide plate is provided in the feed port, and the guide plate extends obliquely toward a side of the feed port away from the center of the transfer chamber.

[0013] The soil remediation method is applied to a leaching device for soil remediation, comprising the following steps:

[0014] Step 1: The sieved soil to be repaired is transported to the feed port at the top of the barrel manually or by a conveyor belt. The soil enters between two adjacent partitions of the transfer chamber and presses down the partition to rotate the first rotating shaft. When the partition rotates to above the discharge port, the soil between the two adjacent partitions falls into the discharge port under the action of gravity and enters the mixing barrel;

[0015] Step 2: The soil entering the mixing drum contacts the spray liquid sprayed by the spray head, and then falls onto the horizontal partition of the mixing drum. The second rotating shaft rotates to cooperate with the paddle to push the soil on the horizontal partition to move, and falls to the next horizontal partition at the discharge port until it falls into the mobile collection bucket of the base.

[0016] Step 3: When a certain amount of soil is stored in the mobile collection barrel, the mobile collection barrel is replaced, and the mobile collection barrel containing the soil and the spraying liquid is placed aside for subsequent processing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, in the present invention, a first rotating shaft and a mounting seat are rotatably installed in the transfer chamber of the material barrel, and the partitions on the peripheral side of the mounting seat divide the transfer chamber into a plurality of fan-shaped spaces. After the soil enters the transfer chamber, it will enter between two adjacent partitions through the opening between the two adjacent partitions, thereby realizing the diversion of the soil entering the transfer chamber. The soil through the feed port is transported to the mixing barrel in batches to contact with the spray liquid sprayed by the spray head, thereby improving the contact effect between the soil and the spray liquid and accelerating the efficiency of eluting and repairing.

[0019] Secondly, in the present invention, the soil after spraying is mixed with the spray liquid and falls onto the horizontal partition. When the second rotating shaft in the mixing cylinder rotates, the paddle fits the horizontal partition to push the soil and the mixed liquid on the horizontal partition to the lower feeding port, and falls onto the horizontal partition below through the lower feeding port, and circulates in sequence until it falls into the temporary storage cavity of the base. In the process of the soil moving between the horizontal partitions, the degree of mixing with the spray liquid can be deepened, the contact effect between the soil and the spray is improved, and the time required for subsequent static repair in the mobile collection barrel is shortened, thereby improving work efficiency.

[0020] Thirdly, in the present invention, the gravity of the soil entering the transfer chamber will press down the partition, so that the mounting seat and the first rotating shaft keep rotating during the process of transporting the soil into the transfer chamber. The first rotating shaft is connected to the third rotating shaft and the second rotating shaft. Therefore, the rotation of the partition, the rotation of the fan blades and the rotation of the paddle do not require motor drive, saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of a leaching device for soil remediation;

[0022] Figure 2 is a side view of a leaching device for soil remediation;

[0023] Figure 3 yes Figure 2 A cross-sectional view at AA of FIG.

[0024] Figure 4 is a three-dimensional cross-sectional view of a leaching device for soil remediation;

[0025] Figure 5 is the front view of the leaching device for soil remediation;

[0026] Figure 6 is Figure 5 the sectional view taken along line B-B of

[0027] Figure 7 is Figure 6 the enlarged partial view at position C of

[0028] Figure 8 is the exploded perspective view of the leaching device for soil remediation.

[0029] The reference numerals in the figure are: 1, base; 11, temporary storage chamber; 111, movable collection bucket; 2, material passing cylinder; 21, transfer chamber; 22, feed inlet; 221, guiding plate; 23, discharge outlet; 24, first rotating shaft; 241, mounting seat; 242, partition plate; 243, first synchronous gear; 244, fifth synchronous gear; 25, air blowing cylinder; 251, air inlet; 252, third rotating shaft; 253, fan blades; 254, filter screen; 255, second synchronous gear; 256, first synchronous belt; 3, mixing cylinder; 31, spray head; 311, spray liquid conveying unit; 32, horizontal partition plate; 321, material discharge opening; 33, second rotating shaft; 331, paddle; 332, tooth groove; 333, third synchronous gear; 334, second synchronous belt; 335, first bevel gear; 336, second bevel gear; 337, fourth synchronous gear; 338, third synchronous belt; 339, shaft rod; 34, turning handle; 35, material distributing plate. Detailed implementation manners

[0030] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation manners.

[0031] Refer to Figures 1 to 8:Leaching device for soil remediation, including a base 1 and a material passing cylinder 2 installed on the base 1. The axis of the material passing cylinder 2 is horizontally arranged. A transfer cavity 21 is arranged inside the material passing cylinder 2. An inlet 22 is arranged on the upper side of the transfer cavity 21. The inlet 22 vertically extends along the tangent direction of the transfer cavity 21. An outlet 23 is arranged at the bottom of the transfer cavity 21. A first rotating shaft 24 is rotatably installed at the axis of the material passing cylinder 2. An installation seat 241 is coaxially arranged on the first rotating shaft 24. The installation seat 241 is located inside the transfer cavity 21. A plurality of partition plates 242 are arranged on the peripheral side of the installation seat 241. The partition plates 242 are arranged around the installation seat 241 at equal angles. The partition plates 242 are attached to the inner wall of the transfer cavity 21. The soil falling from the inlet 22 enters the space formed between two adjacent partition plates 242 and the inner wall of the transfer cavity 21 and presses down the partition plates 242 to rotate the first rotating shaft 24. The outlet 23 is connected to a mixing cylinder 3 arranged below the material passing cylinder 2. A plurality of spray heads 31 are arranged on the peripheral side of the mixing cylinder 3 for spraying the soil. A plurality of horizontal partition plates 32 are arranged below the spray heads 31 in the mixing cylinder 3. Through holes 321 penetrating the horizontal partition plates 32 are arranged on the horizontal partition plates 32. A vertical second rotating shaft 33 is rotatably installed in the mixing cylinder 3. A plurality of paddles 331 are arranged on the peripheral side of the second rotating shaft 33. The paddles 331 are attached to the upper and lower horizontal partition plates 32 and the inner wall of the mixing cylinder 3. The through hole 321 at the bottom of the mixing cylinder 3 is connected to a temporary storage cavity 11 arranged at the bottom of the base 1. A movable collection bucket 111 is slidably installed in the temporary storage cavity 11. The second rotating shaft 33 rotates and cooperates with the paddles 331 to push the mixed soil and spraying liquid towards the through hole 321 so that they enter the movable collection bucket 111.

[0032] The elution device in this application includes a base 1. Workers can use manual labor or a conveyor belt to transport the sieved soil to be repaired to the feed inlet 22 at the top of the material passing cylinder 2. The soil enters the transfer chamber 21. Since the feed inlet 22 extends vertically along the tangent direction of the transfer chamber 21, after the soil enters the transfer chamber 21, it will enter the space between two adjacent partition plates 242 through the opening between two adjacent partition plates 242. The gravity of the soil will press down the partition plate 242, causing the mounting seat 241 and the first rotating shaft 24 to rotate during the process of the soil being transported into the transfer chamber 21 without the need for motor drive, saving production costs. When the partition plate 242 rotates away from the feed inlet 22, the two partition plates 242 storing soil fit against the inner wall of the transfer chamber 21, and the subsequent soil passing through the feed inlet 22 can only enter the space between the next two partition plates 242. Therefore, the diversion of the soil entering the transfer chamber 21 can be achieved. When the partition plate 242 rotates above the discharge port 23, the soil between two adjacent partition plates 242 falls into the discharge port 23 under the action of gravity and enters the mixing cylinder 3, so that the soil passing through the feed inlet 22 is transported to the mixing cylinder 3 in batches to contact the spraying liquid sprayed by the spray head 31, improving the contact effect between the soil and the spraying liquid and accelerating the elution and repair efficiency. The spray head 31 is arranged in a ring on the circumferential side of the mixing cylinder 3, so that the soil entering the mixing cylinder 3 through the discharge port 23 can be comprehensively sprayed. The spraying liquid sprayed by the spray head 31 is uniformly transported by the spraying liquid conveying unit 311. The spraying liquid conveying unit 311 can be an existing technology such as a storage tank connected to a transfer pump, and the technology is relatively mature. Any device that can transport the spraying liquid to all the spray heads 31 can be used, and will not be elaborated here too much. The sprayed soil mixed with the spraying liquid falls onto the horizontal partition plate 32. When the second rotating shaft 33 in the mixing cylinder 3 rotates, the paddle 331 fits against the horizontal partition plate 32 and pushes the soil and the mixed liquid on the horizontal partition plate 32 towards the discharge opening 321, and falls through the discharge opening 321 onto the lower horizontal partition plate 32, and circulates in turn until it falls into the temporary storage chamber 11 of the base 1. The movable collection bucket 111 slidably installed in the temporary storage chamber 11 can be replaced after storing a certain amount of soil to keep the spraying continuous. The movable collection bucket 111 containing soil and spraying liquid stands still on one side, and then subsequent processing is carried out. In this embodiment, during the process of the soil moving between the horizontal partition plates 32, the mixing degree with the spraying liquid can be deepened, the contact effect between the soil and the spraying can be improved, the time required for static repair in the subsequent movable collection bucket 111 is shorter, the work efficiency is improved, and due to the presence of the partition plate 242 in the transfer chamber 21, the amount of soil falling onto the horizontal partition plate 32 each time is less, which is convenient for the second rotating shaft 33 to rotate and cooperate with the paddle 331 to push the soil to move.

[0033] To solve the problem of how to avoid the soil adhering to the surface of the partition plate 242, resulting in the subsequent rotation of the first rotating shaft 24 being blocked, the following features are specifically set:

[0034] The material transfer barrel 2 is provided with a blower 25 outside, and the blower 25 is arranged above the discharge port 23, and the axis of the blower 25 is parallel to the axis of the first rotating shaft 24. The material transfer barrel 2 is provided with an air inlet 251 (such as Figure 1 and Figure 7 As shown in the figure, a third rotating shaft 252 is coaxially installed in the hair dryer 25, and a plurality of fan blades 253 are arranged on the circumference of the third rotating shaft 252. The third rotating shaft 252 rotates to drive the fan blades 253 to transport gas to the inside of the transfer chamber 21; a filter screen 254 is fixedly installed at the air inlet end of the hair dryer 25.

[0035] In this embodiment, a blower 25 is provided on the material barrel 2, and the transfer chamber 21 is connected to the blower 25 through an air inlet 251. The air inlet 251 is arranged above the discharge port 23 and near the mounting seat 241. Therefore, when the partition 242 carrying the soil moves to the discharge port 23, the air inlet 251 is located at one end of the partition 242 close to the mounting seat 241. When the third rotating shaft 252 in the blower 25 drives the fan blades 253 to rotate, the airflow generated by the fan blades 253 enters between two adjacent partitions 242 through the air inlet 251 and flows downward, driving the soil attached to the partition 242 to move toward the discharge port 23, reducing the weight of the partition 242 on the side away from the feed port 22, so that the soil transported by the feed port 22 can more smoothly drive the first rotating shaft 24 to rotate, and the filter screen 254 installed at the air inlet end of the blower 25 removes dust from the airflow entering the transfer chamber 21 to avoid affecting the repaired soil.

[0036] In order to achieve the purpose of driving the third rotating shaft 252 to drive the fan blades 253 to rotate without electrical components, the following features are specifically set:

[0037] A first synchronous gear 243 is coaxially mounted on one end of the first rotating shaft 24 located outside the barrel 2, and a second synchronous gear 255 is coaxially mounted on the third rotating shaft 252. The first synchronous gear 243 and the second synchronous gear 255 are connected via a first synchronous belt 256. An avoidance hole for the first synchronous belt 256 to pass through is provided on the hair dryer 25.

[0038] The third rotating shaft 252 in this embodiment is parallel to the first rotating shaft 24, so the first synchronous gear 243 is set at one end of the first rotating shaft 24 located outside the feeding barrel 2, and the second synchronous gear 255 is set on the third rotating shaft 252. The first synchronous gear 243 and the second synchronous gear 255 are connected by the first synchronous belt 256. When the soil enters the feeding barrel 2 and drives the first rotating shaft 24 to rotate, the third rotating shaft 252 and the fan blades 253 can be driven to rotate to transport airflow into the transfer chamber 21. The number of teeth of the second synchronous gear 255 can be smaller than that of the first synchronous gear 243. Therefore, when the first rotating shaft 24 rotates one circle, the third rotating shaft 252 can be driven to rotate more circles, thereby increasing the wind force. The fan blades 253 can operate automatically without electrical components, thereby saving production costs.

[0039] In order to achieve the purpose of driving the second rotating shaft 33 to drive the paddle 331 to rotate without electrical components, the following features are specifically set:

[0040] A tooth groove 332 surrounding the outer wall of the second rotating shaft 33 is provided at the bottom of the second rotating shaft 33. The base 1 is located outside the mixing barrel 3 and is rotatably installed with a third synchronous gear 333. The third synchronous gear 333 and the tooth groove 332 on the outer wall of the second rotating shaft 33 are connected through a second synchronous belt 334. A first bevel gear 335 is coaxially installed on the upper end of the third synchronous gear 333. The first bevel gear 335 is meshed with a second bevel gear 336 rotatably installed on the base 1. The axis of the second bevel gear 336 is parallel to the axis of the first rotating shaft 24. A fourth synchronous gear 337 is coaxially arranged on the second bevel gear 336. A fifth synchronous gear 244 is coaxially arranged at one end of the first rotating shaft 24 located outside the material barrel 2. The fourth synchronous gear 337 and the fifth synchronous gear 244 are connected through a third synchronous belt 338.

[0041] In this embodiment, the second rotating shaft 33 is rotatably installed in the mixing cylinder 3 to keep the position of its own axis stable. A tooth groove 332 is provided at the bottom end of the second rotating shaft 33, and one end of the second synchronous belt 334 is sleeved through the tooth groove 332. The second synchronous belt 334 passes through the mixing cylinder 3 and is in transmission connection with a third synchronous gear 333 rotatably installed on the base 1. When the third synchronous gear 333 rotates, it can drive the second rotating shaft 33 to rotate. A first bevel gear 335 on the third synchronous gear 333 meshes with a second bevel gear 336. A fourth synchronous gear 337 on the second bevel gear 336 is in transmission connection with a fifth synchronous gear 244 installed at one end of the first rotating shaft 24 through a third synchronous belt 338. Therefore, when the soil enters the transfer cavity 21 and drives the first rotating shaft 24 to rotate, the rotation of the first rotating shaft 24 can synchronously drive the second rotating shaft 33 to rotate, so that the paddle 331 moves to convey the soil and the spraying liquid on the horizontal partition plate 32 to the material outlet 321. The rotation of the second rotating shaft 33 can operate automatically without electrical components, saving production costs. In this embodiment, the number of the horizontal partition plates 32 and the number of the feeding ports 22 should be set so that the mass of the soil entering the partition 242 is greater than the mass of the soil on the horizontal partition plate 32, so as to ensure that the gravity provided by the soil entering the transfer cavity 21 is greater than the resistance borne when the paddle 331 moves the soil, and ensure that the rotation of the first rotating shaft 24 driven by the soil can drive the second rotating shaft 33 to rotate.

[0042] After the soil conveying is completed, the first rotating shaft 24 stops rotating. In order to make the soil and the spraying liquid remaining in the partition 242 and the mixing cylinder 3 completely enter the movable collecting bucket 111, the following features are specifically set:

[0043] The second bevel gear 336 is rotatably installed in an insertion seat provided on the base 1 through a shaft rod 339 coaxially arranged at both ends. A rotating handle 34 is provided at one end of the shaft rod 339, and the rotating handle 34 extends radially along the shaft rod 339.

[0044] In this embodiment, the second bevel gear 336 is rotatably installed on the base 1 through the shaft rod 339 provided at both ends. While keeping the position of its own axis stable, it also keeps the meshing state with the first bevel gear 335 stable. A detachable rotating handle 34 is provided on the shaft rod 339. When the soil stops entering the transfer cavity 21, the first rotating shaft 24 stops rotating. At this time, the staff can install the rotating handle 34 and manually drive the shaft rod 339 to rotate, so as to drive the second rotating shaft 33, the first rotating shaft 24 and the third rotating shaft 252 to rotate synchronously, and continuously convey the soil and the spraying liquid remaining in the transfer cavity 21 and the mixing cylinder 3 to the movable collecting bucket 111, avoiding the soil remaining inside the equipment after the first rotating shaft 24 loses the rotation power.

[0045] In order to prevent the soil from caking between two adjacent partitions 242, thereby reducing the contact area with the spraying liquid when entering the mixing cylinder 3 and contacting the spraying liquid, the following features are specifically set:

[0046] A material distribution plate 35 is provided at the connection between the mixing cylinder 3 and the discharge port 23. The material distribution plate 35 extends in a horizontal direction perpendicular to the axis of the first rotating shaft 24, and its longitudinal section is in a "V" shape with the opening facing downward.

[0047] In this embodiment, a material distribution plate 35 is provided at the connection between the mixing cylinder 3 and the discharge port 23. After the soil enters the discharge port 23 from between two adjacent partition plates 242, it can collide with the material distribution plate 35. During this process, the possibly agglomerated soil is broken. Subsequently, the soil moves downward along the surface of the material distribution plate 35 until it contacts the spraying liquid sprayed by the spray head 31, ensuring the comprehensiveness of the contact.

[0048] In order to achieve the purpose of reducing the amount of soil entering the mixing cylinder 3 at one time, the following features are specifically set:

[0049] A guiding plate 221 is provided in the feed inlet 22, and the guiding plate 221 extends obliquely toward the side of the feed inlet 22 away from the center of the transfer chamber 21.

[0050] In this embodiment, a guiding plate 221 is provided in the feed inlet 22. The soil entering the feed inlet 22 moves into the transfer chamber 21 under the guidance of the guiding plate 221. The presence of the guiding plate 221 causes the soil to contact the end of the partition plate 242 away from the first rotating shaft 24 after entering the transfer chamber 21. Therefore, the force application point of the partition plate 242 is farther from the axis of the first rotating shaft 24, making the first rotating shaft 24 easier to rotate, and resulting in less time for the soil to enter between two adjacent partition plates 242 at one time and less soil content between two adjacent partition plates 242. Therefore, the amount of soil conveyed into the mixing cylinder 3 at one time is less, the contact effect with the spraying liquid is more comprehensive, and the fast rotation speed of the first rotating shaft 24 ensures the soil conveying efficiency.

[0051] A soil remediation method, applied to a soil remediation leaching device, includes the following steps:

[0052] Step 1: Manually or through a conveyor belt, convey the sieved soil to be remediated to the feed inlet 22 at the top of the material passing cylinder 2. The soil enters between two adjacent partition plates 242 of the transfer chamber 21 and presses down the partition plate 242, causing the first rotating shaft 24 to rotate. When the partition plate 242 rotates above the discharge port 23, the soil between two adjacent partition plates 242 falls into the discharge port 23 under the action of gravity and enters the mixing cylinder 3;

[0053] Step 2: The soil entering the mixing cylinder 3 contacts the spraying liquid sprayed by the spray head 31, and then falls onto the horizontal partition plate 32 of the mixing cylinder 3. The second rotating shaft 33 rotates and cooperates with the paddle 331 to push the soil on the horizontal partition plate 32 to move, and it falls to the next layer of horizontal partition plate 32 at the discharge opening 321 until it falls into the movable collection bucket 111 of the base 1;

[0054] Step 3: When a certain amount of soil is stored in the movable collection bucket 111, replace the movable collection bucket 111. The movable collection bucket 111 containing soil and the spraying liquid is left standing on one side, and then subsequent processing is carried out.

[0055] Working principle: The staff can use manual labor or a conveyor belt to transport the sieved soil to be repaired to the feed port 22 at the top of the material passing cylinder 2. After the soil enters the transfer cavity 21, it will enter the space between two adjacent partition plates 242 through the opening between two adjacent partition plates 242. The gravity of the soil will press down the partition plate 242, causing the mounting seat 241 and the first rotating shaft 24 to rotate during the process of the soil being transported into the transfer cavity 21. When the partition plate 242 rotates above the discharge port 23, the soil between two adjacent partition plates 242 falls into the discharge port 23 under the action of gravity and enters the mixing cylinder 3. Thus, the soil passing through the feed port 22 is transported to the mixing cylinder 3 in batches to come into contact with the spraying liquid sprayed by the spray head 31. The sprayed soil mixed with the spraying liquid falls onto the horizontal partition plate 32. When the second rotating shaft 33 in the mixing cylinder 3 rotates, the paddle 331 fits against the horizontal partition plate 32 to push the soil and the mixed liquid on the horizontal partition plate 32 towards the discharge opening 321, and they fall through the discharge opening 321 onto the lower horizontal partition plate 32. This process is repeated until they fall into the temporary storage cavity 11 of the base 1. The movable collection bucket 111 slidably installed in the temporary storage cavity 11 can be replaced when it stores a certain amount of soil. The movable collection bucket 111 containing soil and the spraying liquid is left standing on one side, and then subsequent processing is carried out.

[0056] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A washing device for soil remediation, characterized in that: The invention comprises a base (1) and a material transfer barrel (2) mounted on the base (1), wherein the axis of the material transfer barrel (2) is arranged horizontally, a transfer chamber (21) is arranged in the material transfer barrel (2), a feed port (22) is arranged on the upper side of the transfer chamber (21), the feed port (22) extends vertically along the tangent direction of the transfer chamber (21), and a discharge port (23) is arranged at the bottom of the transfer chamber (21); A first rotating shaft (24) is rotatably mounted at the axis of the material barrel (2), a mounting seat (241) is coaxially arranged on the first rotating shaft (24), the mounting seat (241) is located inside the transfer chamber (21), a plurality of partitions (242) are arranged around the mounting seat (241), the partitions (242) surround the mounting seat (241) at equal angles, the partitions (242) fit the inner wall of the transfer chamber (21), and the soil falling from the feed port (22) enters the space formed by two adjacent partitions (242) and the inner wall of the transfer chamber (21) and presses down the partitions (242) to rotate the first rotating shaft (24); The discharge port (23) is connected to a mixing cylinder (3) arranged below the material cylinder (2); a plurality of spray heads (31) are arranged around the mixing cylinder (3) to spray the soil; a plurality of horizontal partitions (32) are arranged below the spray heads (31) in the mixing cylinder (3); each of the horizontal partitions (32) is provided with a discharge port (321) penetrating the horizontal partitions (32); a second vertical rotating shaft (33) is rotatably installed in the mixing cylinder (3); a paddle (331) is arranged around the second rotating shaft (33); the paddle (331) is in contact with the upper and lower horizontal partitions (32) and the inner wall of the mixing cylinder (3); The bottom feed opening (321) of the mixing barrel (3) is connected to a temporary storage chamber (11) provided at the bottom of the base (1), a movable collection barrel (111) is slidably mounted in the temporary storage chamber (11), and the second rotating shaft (33) rotates in conjunction with the paddle (331) to push the mixed soil and spray liquid toward the bottom feed opening (321) so that the mixed soil and spray liquid enter the movable collection barrel (111); The material passing cylinder (2) is provided with a blower cylinder (25) outside, the blower cylinder (25) is arranged above the material discharge port (23), the axis of the blower cylinder (25) is parallel to the axis of the first rotating shaft (24), the material passing cylinder (2) is provided with an air inlet (251) connecting the blower cylinder (25) and the transfer chamber (21), a third rotating shaft (252) is coaxially installed inside the blower cylinder (25), a plurality of fan blades (253) are arranged around the third rotating shaft (252), and the third rotating shaft (252) rotates to drive the fan blades (253) to transport gas to the inside of the transfer chamber (21); A filter screen (254) is fixedly mounted on the air inlet end of the hair dryer (25); A first synchronous gear (243) is coaxially mounted on one end of the first rotating shaft (24) located outside the material barrel (2); a second synchronous gear (255) is coaxially mounted on the third rotating shaft (252); the first synchronous gear (243) and the second synchronous gear (255) are connected in transmission via a first synchronous belt (256); and a avoidance hole for the first synchronous belt (256) to pass through is provided on the hair dryer (25); A tooth groove (332) surrounding the outer wall of the second rotating shaft (33) is arranged at the bottom of the second rotating shaft (33); a third synchronous gear (333) is rotatably mounted on the base (1) located outside the mixing barrel (3); the third synchronous gear (333) and the tooth groove (332) on the outer wall of the second rotating shaft (33) are connected by a second synchronous belt (334); a first bevel gear (335) is coaxially mounted on the upper end of the third synchronous gear (333); the first bevel gear (335) is meshedly connected with a second bevel gear (336) rotatably mounted on the base (1); the axis of the second bevel gear (336) is parallel to the axis of the first rotating shaft (24); a fourth synchronous gear (337) is coaxially mounted on the second bevel gear (336); a fifth synchronous gear (244) is coaxially mounted on one end of the first rotating shaft (24) located outside the material barrel (2); the fourth synchronous gear (337) and the fifth synchronous gear (244) are connected by a third synchronous belt (338); The second bevel gear (336) is rotatably mounted in a plug-in seat provided on the base (1) via a shaft (339) coaxially arranged at both ends; a rotating handle (34) is provided at one end of the shaft (339), and the rotating handle (34) extends radially along the shaft (339); A material distribution plate (35) is provided at the connection between the mixing cylinder (3) and the material outlet (23); the material distribution plate (35) extends in a horizontal direction perpendicular to the axis of the first rotating shaft (24) and is in a "V" shape with its opening facing downward; A guide plate (221) is provided in the feed port (22), and the guide plate (221) extends obliquely toward a side of the feed port (22) away from the center of the transfer chamber (21).

2. A soil remediation method, applied to the soil remediation washing device according to claim 1, characterized in that: The following steps are involved: Step 1: The sieved soil to be repaired is conveyed to the feed port (22) at the top of the barrel (2) manually or by a conveyor belt, and the soil enters between two adjacent partitions (242) of the transfer chamber (21), and the partition (242) is pressed downward to rotate the first rotating shaft (24). When the partition (242) rotates to above the discharge port (23), the soil between the two adjacent partitions (242) falls into the discharge port (23) under the action of gravity and enters the mixing barrel (3); Step 2: The soil entering the mixing cylinder (3) contacts the spray liquid sprayed by the spray head (31), and then falls onto the horizontal partition (32) of the mixing cylinder (3). The second rotating shaft (33) rotates to cooperate with the paddle (331) to push the soil on the horizontal partition (32) to move, and falls to the next horizontal partition (32) at the discharge port (321) until it falls into the movable collection bucket (111) of the base (1); Step 3: When a certain amount of soil is stored in the mobile collecting barrel (111), the mobile collecting barrel (111) is replaced, and the mobile collecting barrel (111) containing the soil and the spraying liquid is left to stand still, and then subsequent processing is carried out.

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