Soil remediation device based on fly ash

Abstract

The invention relates to the technical field of soil remediation, in particular to a coal ash based soil remediation device which comprises a mounting frame, a hopper and a roller assembly, a coal ash box is arranged on the mounting frame, the hopper is arranged on the mounting frame in a lifting mode and provided with a material cavity with an opening, and buckets are movably arranged at the two ends of the hopper. The roller body assembly comprises a wheel frame and a roller wheel, the roller wheel is rotationally installed on the wheel frame, the wheel frame is arranged in the material cavity in a lifting and left-right moving mode, the side wall of the roller wheel is provided with a protruding column, the protruding column can slide, the wheel frame is provided with a circulation channel and a spray head, and the circulation channel is communicated with the coal ash box and the spray head; after the hopper makes contact with soil, coal fly ash is sprayed out along the spray head and falls onto the soil, the soil is shoveled into the material cavity through the bucket, the soil is stirred through the roller, then the bucket is separated, the soil falls back to the original position, the roller moves downwards, the soil is compacted, and the advantage that sowing and ploughing are integrated is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of soil remediation, and more specifically to a soil remediation device based on fly ash. Background Art

[0002] Fly ash is a solid waste produced by capturing tiny ash particles carried in the flue gas after coal powder is burned at high temperatures in boilers of coal-fired power plants. Fly ash has great application value in the field of soil remediation. For example, the fine particles of fly ash can fill clay pores, reduce the proportion of clay particles, improve soil compaction problems, and enhance the permeability and looseness of the cultivated layer.

[0003] When fly ash is currently used for soil remediation, the fly ash is usually spread evenly on the soil surface and then turned into a 15-20 cm tillage layer using a rotary tiller or plow. Spreading and tilling are separate, that is, tilling is performed after spreading an area. Before tilling, some fly ash may be blown away from the spreading area during the spreading process, resulting in uneven fly ash concentration in the spreading area, which affects the effect of soil remediation.

[0004] Therefore, there is a need to provide a fly ash-based soil remediation device that integrates sowing and plowing and effectively reduces the risk of fly ash being blown away from the sowing area. Summary of the Invention

[0005] The main purpose of the present application is to provide a soil remediation device based on fly ash, wherein the soil remediation device based on fly ash includes a mounting frame, a hopper and a roller assembly, the mounting frame is provided with a fly ash box, the hopper is raised and lowered on the mounting frame in the height direction of the mounting frame, the hopper has a material cavity, the bottom of the material cavity has an opening, buckets are movably provided at both ends of the hopper, when the bucket moves a predetermined distance, the bucket closes the opening or the bucket opens the opening, the roller assembly includes a wheel frame and a roller, the roller is rotatably installed on the wheel frame, and the wheel frame is arranged to be raised and lowered and movable left and right. In the material cavity, the side wall of the roller has a convex column, and the convex column can slide along the radial direction of the roller. The wheel frame has a circulation channel and a plurality of nozzles. The circulation channel is connected with the fly ash box and each of the nozzles. After the hopper is brought into contact with the soil, the fly ash in the ash box is sprayed out along the nozzle and falls onto the soil. Then, the soil with fly ash on the surface is shoveled into the material cavity through the bucket, and the soil is stirred by the roller. Then the bucket is separated and the soil falls back to its original place, and then the roller moves downward and compacts the soil. Compared with the existing technology, the present application has the advantages of integrated sowing and tillage, which effectively reduces the risk of fly ash being blown away from the sowing area.

[0006] Another object of the present application is to provide a soil remediation device based on fly ash, wherein a hollow cylinder is fixedly connected to the center of the roller, the hollow cylinder is rotatably mounted on the wheel frame, the hollow cylinder has a through hole, the roller assembly also includes an electromagnet rod, the electromagnet rod passes through the through hole, and the electromagnet rod is connected to the hole wall of the through hole through a bearing, and the electromagnet rod is slidably arranged on the hopper along the height direction of the hopper, the boss has an armature portion at one end close to the electromagnet rod, and the electromagnet rod selectively allows the boss to extend out or be placed in the roller when the roller rotates circumferentially.

[0007] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a fly ash-based soil remediation device, wherein the fly ash-based soil remediation device comprises: a mounting frame, wherein a coal ash box is provided on the mounting frame; A hopper is arranged on the mounting frame so as to be lifted and lowered in the height direction of the mounting frame, the hopper having a material cavity with an opening at the bottom thereof, and buckets are movably arranged at both ends of the hopper, and when the bucket moves a predetermined distance, the bucket closes the opening or opens the opening; A roller assembly includes a wheel frame and a roller, the roller is rotatably mounted on the wheel frame, the wheel frame is arranged in the material chamber so as to be liftable and movable left and right, the side wall of the roller has a boss, the boss is slidable along the radial direction of the roller, the wheel frame has a circulation channel and a plurality of nozzles, the circulation channel is connected to the coal ash box and each of the nozzles.

[0008] In one or more embodiments of the present application, a hollow cylinder is fixedly connected to the center of the roller, and the hollow cylinder is rotatably mounted on the wheel frame. The hollow cylinder has a through hole, and the roller assembly also includes an electromagnet rod, which passes through the through hole, and the electromagnet rod is connected to the hole wall of the through hole through a bearing, and the electromagnet rod is slidably arranged on the hopper along the height direction of the hopper, and the protrusion has an armature portion at one end close to the electromagnet rod.

[0009] In one or more embodiments of the present application, the roller assembly further includes a rotor core, a stator core and a stator frame, the stator frame is mounted on the wheel frame, the stator core and the coil are wound on the stator frame, the rotor core is sleeved on the hollow cylinder and fixedly connected to the hollow cylinder, and the rotor core is located on the inner side of the stator core.

[0010] In one or more embodiments of the present application, the fly ash-based soil remediation device also includes a rotating frame and a linear drive device. The rotating frame is rotatably mounted on the baffles at both ends of the hopper, the linear drive device is fixedly mounted on the rotating frame, and each push rod of the linear drive device is fixedly connected to a bucket.

[0011] In one or more embodiments of the present application, both end baffles of the hopper are provided with notch grooves, and elastic pads are provided on the bottom walls of the notch grooves, and the bottom wall of the rotating frame is in contact with the elastic pads.

[0012] In one or more embodiments of the present application, the wheel frame includes two end plates, a connecting cylinder and a vertical cylinder. The two ends of the connecting cylinder are fixedly connected to the two end plates respectively, and the vertical cylinder is fixedly connected to the connecting cylinder. The fly ash-based soil remediation device also includes a linear module and a second lifting drive device. The second lifting drive device is installed on the slider of the linear module, and the linear module is installed on the side of the hopper close to the mounting frame. The push rod of the second lifting drive device is fixedly connected to the vertical cylinder. The vertical cylinder and the connecting cylinder have the flow channel. The nozzle is provided on the connecting cylinder, and the top of the vertical cylinder is connected to the coal ash box.

[0013] In one or more embodiments of the present application, the coal ash box has a discharge port at the bottom, a vertically arranged first sleeve is fixedly connected to the discharge port, a vertically arranged second sleeve is fixedly connected to the top of the vertical cylinder, the first sleeve is sleeved on the outside of the second sleeve, and a valve is provided on the discharge port.

[0014] In one or more embodiments of the present application, a one-way fan is provided at the top feed port of the coal ash box.

[0015] In one or more embodiments of the present application, the baffles on both sides of the hopper have contoured triangular portions.

[0016] In an embodiment of the present application, a soil remediation device based on fly ash includes a mounting frame, a hopper and a roller assembly. The mounting frame is provided with a fly ash box. The hopper is lifted and lowered on the mounting frame in the height direction of the mounting frame. The hopper has a material cavity. The bottom of the material cavity has an opening. Buckets are movably provided at both ends of the hopper. When the bucket moves a predetermined distance, the bucket closes the opening or opens the opening. The roller assembly includes a wheel frame and a roller. The roller is rotatably installed on the wheel frame. The wheel frame is lifted and lowered and can be moved left and right in the material cavity. The side wall of the roller has a convex column. The convex column moves along the roller. The wheel is slidable in the radial direction, and the wheel frame is provided with a circulation channel and several nozzles, the circulation channel is connected with the fly ash box and each nozzle, and after the hopper contacts the soil, the fly ash in the fly ash box is sprayed out along the nozzle and falls onto the soil, and then the soil with fly ash on the surface is shoveled into the material cavity through the bucket, and the soil is stirred by the roller, and then the bucket is separated and the soil falls back to its original place, and then the roller moves downward and compacts the soil. Compared with the existing technology, the present application has the advantages of integrated sowing and tillage, which effectively reduces the risk of fly ash being blown away from the sowing area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] These and / or other aspects and advantages of the present application will become more clear and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which: Figure 1 The figure shows a schematic structural diagram of a fly ash-based soil remediation device of the present application at one angle; Figure 2 The figure shows a schematic structural diagram of a fly ash-based soil remediation device from another angle; Figure 3 A cross-sectional view of a roller is shown; Figure 4 The figure shows a schematic diagram of a fly ash-based soil remediation device installed on one side of a vehicle body; Figure 5 Pictured Figure 1 A local enlarged view of point C; Figure 6 Pictured Figure 2 A local enlarged view of point D. DETAILED DESCRIPTION

[0018] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0019] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0020] Although ordinal numbers such as "first," "second," and the like will be used to describe various components, these are not intended to limit those components. The terms are used solely to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the teachings of the inventive concept. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0021] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular is intended to include the plural, unless the context clearly indicates otherwise. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of a stated feature, number, step, operation, component, element, or combination thereof, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0022] Schematic fly ash-based soil remediation device, ref. Figures 1 to 6 According to a preferred embodiment of the present invention, a soil remediation device based on fly ash includes a mounting frame 10, a hopper 20 and a roller assembly 30.

[0023] Specifically, if Figures 1 to 3As shown, a coal ash box 102 is provided on the mounting frame 10; in addition, the hopper 20 is set on the mounting frame 10 to be raised and lowered in the height direction of the mounting frame 10 by two oil cylinders 101. Specifically, an oil cylinder 101 is provided at each end of the mounting frame 10, and the two ends of the oil cylinder 101 are respectively connected to the hopper 20, and the oil cylinder 101 is communicated with an external oil tank. The hopper 20 has a material cavity 201, and the bottom of the material cavity 201 has an opening 2011. Buckets 40 are movably provided at both ends of the hopper 20. When the bucket 40 moves a predetermined distance, the bucket 40 closes the opening 2011 or opens the opening 2011. In addition, the roller assembly 30 includes a wheel frame 301 and a roller 302, and the roller 302 is rotatably installed on the wheel frame 301. The wheel frame 301 is arranged in the material chamber 201 so that it can be raised and lowered and moved left and right. The side wall of the roller 302 has a boss 303, and the boss 303 can slide along the radial direction of the roller 302, that is, the roller 302 has a plurality of first slide grooves 3021 in the radial direction, and each of the first slide grooves 3021 is slidably provided with a boss 303. The wheel frame 301 has a circulation channel 3011 and a plurality of nozzles 3012, and the circulation channel 3011 is connected to the coal ash box 102 and each of the nozzles 3012.

[0024] It should be noted that, referring to Figure 4The mounting frame 10 can be fixedly mounted on one side of the mobile vehicle body. In the initial state, the hopper 20 is located above the soil. After moving to the designated position, the hopper 20 is moved downward by a predetermined distance, and the soil closes the opening 2011. Then, the wheel frame 301 is moved to one end of the material cavity 201. Subsequently, the fly ash in the ash box 102 flows out from the nozzle 3012 along the flow channel 3011 and falls onto the soil below. During this process, the wheel frame 301 is slowly moved to the other end of the material cavity 201, and the fly ash will gradually cover the surface of the soil in the material cavity 201. In order to ensure sufficient contact between the fly ash and the soil, the two buckets 40 are then moved downwardly in opposite directions, and the two buckets 40 shovel into the soil. At a certain moment, the two buckets 40 abut against each other and close the opening 2011 on the bottom wall of the material chamber 201. Subsequently, the hopper 20 is moved upward by a predetermined distance, that is, at this time, there is a digging opening on the soil, and in the material chamber 201, the soil in the material chamber 201 is stirred by rotating the roller 302 circumferentially, so as to achieve sufficient contact between the soil and the fly ash. After a predetermined time, the two buckets 40 are moved upwardly in opposite directions and the opening 2011 is opened, so that the soil automatically falls into the digging opening below. Subsequently, the roller 302 is moved downward relative to the hopper 20, and the roller 302 is in contact with the soil in the digging opening below to achieve compaction of the soil. It is obvious that compared with the existing technology, the present application has the advantage of integrating sowing and plowing, effectively reducing the risk of fly ash being blown away from the sowing area.

[0025] It should also be noted that when the soil is placed in the material cavity 201 and the roller 302 rotates, the boss 303 extends a predetermined distance from the side wall of the roller 302 along the first chute 3021 to achieve sufficient mixing of the soil; and when compacting the soil, the boss 303 is completely placed in the roller 302, that is, in the first chute 3021, and one end surface of the boss 303 is coplanar with the roller surface of the roller 302.

[0026] Specifically, to implement the above steps, Figure 1 、 Figure 3 and Figure 5As shown, the center of the roller 302 is fixedly connected to a hollow cylinder 3022, and the hollow cylinder 3022 is rotatably mounted on the wheel frame 301. The hollow cylinder 3022 has a through hole 30221, and the roller assembly 30 also includes an electromagnet rod 3023, and the electromagnet rod 3023 passes through the through hole 30221, and the electromagnet rod 3023 is connected to the hole wall of the through hole 30221 through a bearing, and the electromagnet rod 3023 is slidably set on the hopper 20 along the height direction of the hopper 20, that is, the hopper 20 has a second slide groove 202, one end of the electromagnet rod 3023 is square and slidably set in the second slide groove 202, and the boss 303 has an armature part 3031 at one end close to the electromagnet rod 3023.

[0027] It should be noted that when the soil is placed in the material cavity 201, the electromagnetic rod 3023 is in a de-energized state and does not apply an adsorption force to the armature part 3031. As the roller 302 rotates circumferentially, the boss 303 will be thrown out in the direction away from the central axis of the roller 302 under the action of centrifugal force, that is, it extends out of the slot of the first chute 3021 by a predetermined distance and fully contacts the soil placed in the material cavity 201; and when compacting the soil, the electromagnetic rod 3023 is energized, and each of the armature parts 3031 is subjected to a magnetic attraction force, and the boss 303 overcomes the centrifugal force and is tightly adsorbed in the first chute 3021 corresponding to the roller 302, so as to achieve rolling of the soil. In addition, by connecting the electromagnetic rod 3023 and the hollow cylinder 3022 through a bearing, and making one end of the electromagnetic rod 3023 square and sliding in the second slide groove 202, that is, the electromagnetic rod 3023 can and can only slide, it is avoided that when the hollow cylinder 3022 rotates circumferentially, the electromagnetic rod 3023 follows the circumferential rotation and causes the wire to be wound or even broken. In addition, since the electromagnetic rod 3023 and the hollow cylinder 3022 are connected by a bearing, when the roller 302 moves up and down independently, the electromagnetic rod 3023 follows and moves up and down along the second slide groove 202.

[0028] Furthermore, in order to realize the circumferential rotation of the roller 302, as shown in FIG. Figure 5 As shown, the roller assembly 30 further includes a rotor core 304, a stator core 305 and a stator frame (not shown in the figure). The stator frame is mounted on the wheel frame 301, and the stator core 305 and the coil are wound on the stator frame. The rotor core 304 is sleeved on the hollow cylinder 3022 and fixedly connected to the hollow cylinder 3022. The rotor core 304 is located on the inner side of the stator core 305.

[0029] It should be noted that when the coil on the stator frame is energized, the hollow cylinder 3022 rotates circumferentially under the action of magnetic force. Since the hollow cylinder 3022 is fixedly connected to the roller 302, the roller 302 rotates circumferentially.

[0030] It should also be noted that if Figure 5 As shown, the baffles at both ends of the hopper 20 also have a third chute 203, and the second chute 202 is obtained by further extending downward from the bottom wall of the third chute 203 by a predetermined distance. After one end of the stator frame is connected to the wheel frame 301, the other end of the stator frame extends into the third chute 203, thereby realizing that when the wheel frame 301 performs a lifting movement alone, the stator frame follows the lifting movement.

[0031] Furthermore, in order to realize the movement of the bucket 40, as shown in FIG. Figure 2 and Figure 6 As shown, the fly ash-based soil remediation device also includes a rotating frame 501 and a linear drive device 502. The rotating frame 501 is rotatably mounted on the baffles at both ends of the hopper 20, and the linear drive device 502 is fixedly mounted on the rotating frame 501, and each push rod of the linear drive device 502 is fixedly connected to a bucket 40.

[0032] It should be noted that, since the shoveling surface of the bucket 40 includes a first arc surface 401, a second arc surface 402 and an end plane 403, and the second arc surface 402 is located between the first arc surface 401 and the end plane 403, the linear drive device 502 is rotatably installed on the bucket 20 through the rotating frame 501. When the push rod of the linear drive device 502 gradually extends and the bucket 40 gradually rotates from the first arc surface 401 contacting the bottom of the baffles at both ends of the bucket 20 to the second arc surface 402 contacting the bottom of the baffles at both ends of the hopper 20, the rotating frame 501 adaptively makes a certain angle change so that the inner shoveling surface of the bucket 40 is always in contact with the bottom of the baffles at both ends of the hopper 20.

[0033] In addition, to avoid motion interference, e.g. Figure 6 As shown, both end baffles of the hopper 20 have notch grooves 204 , and elastic pads 2041 are provided on the bottom walls of the notch grooves 204 . The bottom wall of the rotating frame 501 contacts the elastic pads 2041 .

[0034] It should be noted that, under normal conditions, the elastic pad 2041 provides a certain supporting force to the rotating frame 501, and when the angle of the rotating connection between the rotating frame 501 and the hopper 20 changes, the elastic pad 2041 can provide a certain deformation space to avoid the problem of the bucket 40 being stuck during the extension or shortening of the push rod of the linear drive device 502; in addition, Figure 6 As shown, a spring 2042 is provided between the rotating frame 501 and the notch groove 204, and one end of the spring 2042 is fixedly connected to the groove wall of the notch groove 204. When the bucket 40 shovels into the soil, if it encounters a stone, the rotating frame 501, the elastic pad 2041 and the spring 2042 will effectively provide a buffering effect for the bucket 40 and provide conditions for the bucket 40 to make a slight evasive swing after encountering an obstacle.

[0035] Furthermore, in order to realize that the wheel frame 301 can be lifted and moved left and right in the material chamber 201, Figure 1 As shown, the wheel frame 301 includes two end plates 3013, a connecting cylinder 3014 and a vertical cylinder 3015, the two ends of the connecting cylinder 3014 are fixedly connected to the two end plates 3013 respectively, and the vertical cylinder 3015 is fixedly connected to the connecting cylinder 3014. The fly ash-based soil remediation device also includes a linear module 601 and a second lifting drive device 602, the second lifting drive device 602 is installed on the slider of the linear module 601, and the linear module 601 is installed on the side of the hopper 20 close to the mounting frame 10. The push rod of the second lifting drive device 602 is fixedly connected to the vertical cylinder 3015, and the vertical cylinder 3015 and the connecting cylinder 3014 have the circulation channel 3011. The nozzle 3012 is arranged on the side wall of the connecting cylinder 3014, and the top of the vertical cylinder 3015 is connected to the coal ash box 102.

[0036] It should be noted that when the two cylinders 101 are in operation, since the linear module 601 is installed on the hopper 20, and the wheel frame 301 is installed on the linear module 601 through the second lifting drive device 602, the hopper 20 and the wheel frame 301 are lifted and lowered synchronously; and when the push rod of the second lifting drive device 602 is in operation, the wheel frame 301 performs independent up and down lifting movements relative to the hopper 20, and when the linear module 601 is in operation, the wheel frame 301 moves left and right in the material chamber 201; in addition, by arranging the flow channel 3011 and the nozzle 3012 on the wheel frame 301, the left and right movement of the wheel frame 301 can provide conditions for spreading fly ash and subsequent compaction of the soil.

[0037] In addition, in order to avoid the hopper 20 from moving up and down, Figure 1 and Figure 2 As shown, the movement of the connecting channel between the vertical cylinder 3015 and the coal ash box 102 interferes, the coal ash box 102 has a discharge port at the bottom, and a vertically arranged first sleeve 103 is fixedly connected to the discharge port, and a vertically arranged second sleeve is fixedly connected to the top of the vertical cylinder 3015, and the first sleeve 103 is sleeved on the outside of the second sleeve, and a valve is provided on the discharge port.

[0038] It should be noted that by making the first sleeve 103 be sleeved on the outside of the second sleeve, when the hopper 20 moves downward, the second sleeve is still placed in the first sleeve 103, so that the fly ash passes through the second sleeve and the first sleeve 103 from the ash box 102 and flows into the circulation channel 3011, and is discharged from the nozzle 3012.

[0039] Furthermore, in addition to allowing the fly ash to flow downward under the action of gravity, Figure 1 and Figure 2 As shown, a one-way fan 104 is provided at the top feed port of the ash box 102 . The one-way fan 104 is provided to send external airflow into the ash box 102 , exerting a thrust on the fly ash and accelerating the flow into the circulation channel 3011 .

[0040] In addition, in order to achieve the closing of the material cavity 201 when the two buckets 40 abut against each other, Figure 2 As shown, the baffles on both sides of the hopper 20 have contoured triangular portions 205 .

[0041] In summary, the fly ash-based soil remediation device according to the embodiment of the present application is explained, which provides the fly ash-based soil remediation device with advantages such as integrated spreading and tillage, effectively reducing the risk of fly ash being blown away from the spreading area.

[0042] It is worth noting that the fly ash-based soil remediation device described in the embodiments of this application has a simple structure, does not involve complex manufacturing processes and does not require expensive materials, and is highly economical. Furthermore, for manufacturers, the fly ash-based soil remediation device provided in this application is easy to produce and is low-cost, which is more conducive to controlling production costs and further promoting product promotion and use.

[0043] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from these principles.

Claims

1. A soil remediation device based on fly ash, characterized by: The fly ash-based soil remediation device includes: a mounting frame, wherein a coal ash box is provided on the mounting frame; A hopper is arranged on the mounting frame so as to be lifted and lowered in the height direction of the mounting frame, the hopper having a material cavity with an opening at the bottom thereof, and buckets are movably arranged at both ends of the hopper, and when the bucket moves a predetermined distance, the bucket closes the opening or opens the opening; A roller assembly includes a wheel frame and a roller, the roller is rotatably mounted on the wheel frame, the wheel frame is arranged in the material chamber so as to be liftable and movable left and right, the side wall of the roller has a boss, the boss is slidable along the radial direction of the roller, the wheel frame has a circulation channel and a plurality of nozzles, the circulation channel is connected to the coal ash box and each of the nozzles.

2. The fly ash-based soil remediation device according to claim 1, characterized in that: A hollow cylinder is fixedly connected to the center of the roller, and the hollow cylinder is rotatably mounted on the wheel frame. The hollow cylinder has a through hole. The roller assembly also includes an electromagnet rod, which passes through the through hole. The electromagnet rod is connected to the hole wall of the through hole through a bearing, and the electromagnet rod is slidably arranged on the hopper along the height direction of the hopper. The protrusion has an armature portion at one end close to the electromagnet rod.

3. The fly ash-based soil remediation device according to claim 2, characterized in that: The roller assembly also includes a rotor core, a stator core and a stator frame. The stator frame is installed on the wheel frame. The stator core and the coil are wound on the stator frame. The rotor core is sleeved on the hollow cylinder and fixedly connected to the hollow cylinder. The rotor core is located on the inner side of the stator core.

4. The fly ash-based soil remediation device according to claim 3, characterized in that: The fly ash-based soil remediation device also includes a rotating frame and a linear drive device. The rotating frame is rotatably mounted on the baffles at both ends of the hopper, the linear drive device is fixedly mounted on the rotating frame, and each push rod of the linear drive device is fixedly connected to a bucket.

5. The fly ash-based soil remediation device according to claim 4, characterized in that: The baffles at both ends of the hopper are provided with notch grooves, and elastic pads are provided on the bottom walls of the notch grooves. The bottom wall of the rotating frame contacts the elastic pads.

6. The fly ash-based soil remediation device according to claim 4, characterized in that: The wheel frame includes two end plates, a connecting cylinder and a vertical cylinder. The two ends of the connecting cylinder are fixedly connected to the two end plates respectively, and the vertical cylinder is fixedly connected to the connecting cylinder. The fly ash-based soil remediation device also includes a linear module and a second lifting drive device. The second lifting drive device is installed on the slider of the linear module, and the linear module is installed on the side of the hopper close to the mounting frame. The push rod of the second lifting drive device is fixedly connected to the vertical cylinder. The vertical cylinder and the connecting cylinder have the circulation channel. The nozzle is provided on the connecting cylinder, and the top of the vertical cylinder is connected to the coal ash box.

7. The fly ash-based soil remediation device according to claim 6, characterized in that: The bottom of the coal ash box has a discharge port, a vertically arranged first sleeve is fixedly connected to the discharge port, a vertically arranged second sleeve is fixedly connected to the top of the vertical cylinder, the first sleeve is sleeved on the outside of the second sleeve, and a valve is provided on the discharge port.

8. The fly ash-based soil remediation device according to claim 7, characterized in that: A one-way fan is provided at the top feed port of the coal ash box.

9. The fly ash-based soil remediation device according to claim 4, characterized in that: The baffles on both sides of the hopper have contoured triangular parts.

Images