Leaching device and method for contaminated soil remediation

Abstract

The invention relates to the technical field of soil leaching equipment, and discloses a leaching device and method for contaminated soil remediation, the leaching device comprises a base, and a leaching box is fixedly mounted at the top of the base. During use, polluted soil to be remediated falls above the filter plate after being put into the leaching box, the rotating ring can be driven to rotate under the action of the rotating mechanism, then the filter plate is driven to synchronously rotate under the action of the vibrating mechanism, and continuous reciprocating vibration is performed in the rotating process, so that the soil quickly penetrates through the filter plate, and the soil can be recovered under the action of the driving mechanism. The crushing mechanism crushes, rakes and scatters large soil, the filtering speed is further increased, the filtered soil is guided to the center position through the falling material concentration mechanism and then falls onto the spraying buffer mechanism, at the moment, a plurality of atomizing nozzles spray out leacheate to leach the soil, and through the action of the spraying buffer mechanism, the falling speed of the soil can be delayed, so that the soil quality is improved. The spraying contact area is increased, so that the leacheate is in full contact with the soil to complete leaching.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil leaching equipment, more particularly to a leaching device and method for contaminated soil remediation. BACKGROUND

[0002] Soil leaching technology refers to a technology of injecting a chemical solvent that can promote the dissolution or migration of soil pollutants into contaminated soil, so as to dissolve, separate and treat the pollutants from the soil.

[0003] In the prior art, the spray head of the leaching device is directly aligned with the falling soil for spraying, but due to the small size and fast falling speed of the soil particles, the contact between the leaching liquid and the surface of the soil is often fast, and it is difficult to form sufficient and repeated contact, which leads to the fact that the pollutants cannot be completely dissolved and separated, and usually multiple repeated leaching is required to barely meet the remediation standard, which not only consumes time and effort, but also causes a large amount of waste of leaching liquid, and the overall use effect is poor. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a leaching device and method for contaminated soil remediation to solve the problems existing in the background art.

[0005] The present application provides the following technical scheme: a leaching device for contaminated soil remediation, comprising a base, a leaching tank fixedly installed on the top of the base, a tank cover provided at the top end of the leaching tank, a rotating ring rotatably installed on the inner wall of the periphery of the leaching tank, a filter plate movably provided at the top end of the rotating ring through a vibration mechanism, the filter plate being circular in design, the horizontal height of the center and the circumference being higher, a rotating mechanism provided on the outer wall of the periphery of the rotating ring, a transmission cavity opened in the tank cover, a circular hole opened in the bottom inner wall of the transmission cavity, a concave cylinder rotatably installed in the circular hole, a crushing mechanism provided on the outer wall of the periphery of the concave cylinder, the rotating mechanism and the crushing mechanism being connected through a driving mechanism, a material falling and concentrating mechanism provided in the leaching tank, the material falling and concentrating mechanism being connected with the rotating ring, a spray buffer mechanism provided in the leaching tank, the spray buffer mechanism comprising an annular shunt tank, the annular shunt tank being fixedly installed on the inner wall of the periphery of the leaching tank, a plurality of atomizing nozzles being provided on the inner wall of the periphery of the annular shunt tank, a collection groove being opened in the side of the base, and a collection box being slidably installed in the collection groove.

[0006] Preferably, the vibration mechanism comprises a plurality of slide shafts, the plurality of slide shafts are slidingly installed on the rotating ring, the top ends of the plurality of slide shafts are fixedly connected with the bottom of the filter plate, the bottom ends of the plurality of slide shafts are fixedly installed with upper extrusion hemispheres, a plurality of vibration cavities are formed in the rotating ring, the plurality of slide shafts respectively penetrate through the plurality of vibration cavities, the circumferential outer walls of the plurality of slide shafts are fixedly installed with annular plates, and the bottoms of the plurality of annular plates are provided with vibration springs.

[0007] Preferably, the vibration mechanism further comprises a plurality of fixed rings, the plurality of fixed rings are fixedly installed on the circumferential inner walls of the elution tanks, and the top portions of the plurality of fixed rings are fixedly installed with a plurality of lower extrusion hemispheres.

[0008] Preferably, the rotating mechanism comprises an annular rack, the circumferential inner walls of the elution tanks are provided with annular grooves, the annular rack is movably arranged in the annular grooves, the annular rack is fixedly sleeved on the circumferential outer walls of the rotating ring, the side portions of the annular grooves are provided with transmission grooves, the top inner walls of the transmission grooves are provided with first rotating holes, a rotating shaft is rotatably installed in the first rotating hole, the bottom end of the rotating shaft extends into the transmission groove and is fixedly sleeved with a transmission gear, and the top end of the rotating shaft is provided with a cross groove.

[0009] Preferably, the crushing mechanism comprises a rotating rod, the circumferential outer walls of the concave cylinder are provided with second rotating holes, the rotating rod is rotatably installed in the second rotating hole, one end of the rotating rod is fixedly sleeved with a crushing roller, the top inner walls of the transmission cavities are fixedly installed with a fixed shaft, the bottom end of the fixed shaft is rotatably installed on the bottom inner wall of the concave cylinder, the fixed shaft is fixedly sleeved with a fixed bevel gear, and the other end of the rotating rod is fixedly sleeved with a rotating bevel gear.

[0010] Preferably, the circumferential outer walls of the concave cylinder are fixedly installed with two fixed rods, the circumferential outer walls of the two fixed rods are respectively provided with spiked harrows, and the two spiked harrows are arranged in a staggered manner.

[0011] Preferably, the driving mechanism comprises a driving motor, the driving motor is fixedly installed on the top of the box cover, the output shaft of the driving motor penetrates into the transmission cavity, the top inner wall of the transmission cavity is rotatably installed with a linkage shaft, the bottom end of the linkage shaft extends out of the transmission cavity and is fixedly installed with a cross clamping block, the circumferential outer walls of the output shaft of the driving motor and the circumferential outer wall of the linkage shaft are fixedly sleeved with first synchronous pulleys, the two first synchronous pulleys are jointly meshed with a first synchronous belt, the circumferential outer walls of the output shaft of the driving motor and the circumferential outer wall of the concave cylinder are fixedly sleeved with second synchronous pulleys, and the two second synchronous pulleys are jointly meshed with a second synchronous belt.

[0012] Preferably, the blanking concentrating mechanism comprises a conical cylinder which is rotatably installed on the inner wall of the side of the elution box, the bottom end of the conical cylinder is provided with a discharging pipe, and the inner wall of the side of the conical cylinder is fixedly installed with a plurality of arc-shaped connecting plates, and the top of the plurality of arc-shaped connecting plates is fixedly connected with the inner wall of the side of the rotating ring.

[0013] Preferably, the spraying buffering mechanism further comprises a conical flow guide disc and a water pump, a liquid storage cavity is arranged in the base, the water pump is fixedly installed on the top of the base, the side of the water pump is provided with a liquid inlet pipe, the other end of the liquid inlet pipe extends into the liquid storage cavity, the top end of the water pump is connected with a liquid supply pipe, the other end of the liquid supply pipe is connected with the inside of the annular flow divider box, the bottom of the filter plate is fixedly installed with a connecting shaft, the conical flow guide disc is fixedly sleeved on the outer wall of the connecting shaft, the bottom end of the connecting shaft is fixedly installed with a limiting plate, and the inclined surface of the conical flow guide disc is uniformly provided with a plurality of convex points.

[0014] The elution method of the elution device for contaminated soil remediation comprises the following steps: Step one, the soil is put into the elution box, the driving motor is started, the two first synchronous pulleys and the first synchronous belt are engaged, the connecting shaft is driven to rotate, the cross block and the cross groove are connected, the rotating shaft is rotated, the transmission gear and the annular rack are engaged, the rotating ring is reversely rotated with the driving motor, the rotating ring drives the filter plate to synchronously rotate through the plurality of sliding shafts, the soil falling down is evenly sprinkled on the filter plate, and the filtering speed is improved; Step two, when the rotating ring rotates, the plurality of sliding shafts are synchronously rotated, the upper extrusion hemispheres at the bottom end of the sliding shafts rotate around the shaft center, are continuously extruded with the plurality of lower extrusion hemispheres, the filter plate is continuously vibrated through the elasticity of the plurality of vibration springs, the filtering rate is further improved, and the soil is prevented from being accumulated on the filter plate; Step three, when the output shaft of the driving motor rotates, the two second synchronous pulleys and the second synchronous belt are engaged, the concave cylinder is synchronously rotated, the concave cylinder drives the rotating rod and the crushing roller to rotate around the shaft center, when the rotating rod rotates, the rotating bevel gear is engaged with the fixed bevel gear, the rotating rod and the crushing roller are self-rotated, the large block of soil is crushed, and the concave cylinder drives the two fixed rods and the spike harrow to rotate, the soil on the filter plate is raked and scattered; Step four, after the soil filtered through the filter plate falls down, the soil is guided to the middle position by the conical cylinder, the conical cylinder is rotated through the plurality of arc-shaped connecting plates when the rotating ring rotates, the soil is prevented from adhering to the inner wall, the soil is guided to the center of the conical flow guide disc through the conical cylinder, the filter plate is synchronously rotated through the connecting shaft, the soil is rolled off from the inclined surface through the cooperation of the convex points, the water pump pumps the elution liquid to the annular flow divider box, the elution liquid is sprayed to the soil through the atomizing nozzles, the spraying time is prolonged, the area is increased, the soil after elution falls into the collecting box and is convenient for transportation.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1. By rotating the ring to rotate the filter plate, the soil can be evenly spread above the filter plate, avoiding local accumulation, and through the repeated extrusion of the upper extrusion hemisphere at the bottom of the sliding shaft and the lower extrusion hemisphere of the fixed ring, combined with the elastic reset of the vibration spring, the filter plate continuously vibrates up and down, through the dual action of "rotation + vibration", not only speeds up the speed of the soil passing through the filter plate, but also effectively prevents the filter hole from being blocked, greatly improves the filtering efficiency, ensures that the soil quickly enters the subsequent processing link, and shortens the overall repair cycle.

[0016] 2. When the concave cylinder drives the revolution of the rotating rod, the meshing of the rotating bevel gear and the fixed bevel gear promotes the rotation of the crushing roller, and the two staggered setting of the harrow is further scattered with the rotation of the concave cylinder, which refines the soil particles, avoids the blockage of the filter plate by large soil, and makes the soil more loose, providing better material state for subsequent filtration and leaching.

[0017] 3. Through the collaborative design of the conical cylinder and the conical guide disc, the action time of the soil and the leaching liquid is effectively prolonged. The conical cylinder concentrates the filtered soil to the center, and its rotating characteristics can prevent soil adhesion. When the soil falls above the conical guide disc, through the inclined conical surface and surface convex points of the conical guide disc, the soil rolling speed can be slowed down, and the synchronous rotation can avoid retention. This setting can prolong the rolling path of the soil on the guide disc, fully contact with the leaching liquid sprayed by the atomizing nozzle of the ring-shaped distribution box, greatly increase the spraying area and action time, and make the pollutants more completely dissolved by the leaching liquid, significantly improve the soil remediation effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the embodiment; Figure 2 is a partial cutaway structural schematic diagram of the leaching box, box cover, filter plate, rotating ring and ring-shaped rack in the embodiment; Figure 3 is Figure 2 an enlarged structural schematic diagram of position A in the embodiment; Figure 4 is Figure 2 an enlarged structural schematic diagram of position B in the embodiment; Figure 5 is Figure 2 an enlarged structural schematic diagram of position C in the embodiment; Figure 6 is Figure 2 an enlarged structural schematic diagram of position D in the embodiment; Figure 7 is a partial cutaway enlarged structural schematic diagram of the filter plate, rotating ring and ring-shaped rack in the embodiment; Figure 8It is the local section view structure schematic diagram of base, elution tank, annular distribution tank, conical cylinder and conical flow guide disc in this embodiment. Figure 9 It is Figure 8 It is the enlarged structure schematic diagram of middle E. Figure 10 It is Figure 8 It is the enlarged structure schematic diagram of middle F.

[0019] The figure marks are as follows: 1, base; 2, elution tank; 3, tank cover; 4, driving motor; 5, collection box; 6, rotating ring; 7, filter plate; 8, sliding shaft; 9, annular plate; 10, upper extrusion hemisphere; 11, vibration spring; 12, fixed ring; 13, lower extrusion hemisphere; 14, annular rack; 15, transmission groove; 16, rotating shaft; 17, transmission gear; 18, transmission cavity; 19, linkage shaft; 20, first synchronous pulley; 21, first synchronous belt; 22, concave cylinder; 23, second synchronous pulley; 24, second synchronous belt; 25, rotating rod; 26, crushing roller; 27, fixed shaft; 28, fixed bevel gear; 29, rotating bevel gear; 30, conical cylinder; 31, arc-shaped connecting plate; 32, conical flow guide disc; 33, connecting shaft; 34, limiting plate; 35, annular distribution tank; 36, atomizing nozzle; 37, water pump; 38, liquid storage cavity; 39, fixed rod; 40, harrow; 41, cross-shaped clamping block. DETAILED DESCRIPTION

[0020] The application will be further described below in connection with specific embodiments, however, people skilled in the art should understand that the detailed description given in connection with the drawings is for better explanation, the structure of the application must be beyond the limited embodiments, and for some equivalent alternatives or common means, the detailed description will not be given in this text, but still belongs to the protection scope of this application.

[0021] Figures 1-10 is the best embodiment of the application, the following will be described in connection with the drawings Figures 1-10 The application will be further described below in connection with specific embodiments, however, people skilled in the art should understand that the detailed description given in connection with the drawings is for better explanation, the structure of the application must be beyond the limited embodiments, and for some equivalent alternatives or common means, the detailed description will not be given in this text, but still belongs to the protection scope of this application.

[0022] A soil rinsing device for contaminated soil remediation includes a base 1, a rinsing tank 2 fixedly mounted on the top of the base 1, and a cover 3 at the top of the rinsing tank 2. Specifically, the rinsing tank 2 and the cover 3 are detachably connected by multiple bolts. A rotating ring 6 is rotatably mounted on the inner wall of the rinsing tank 2. A filter plate 7 is movably mounted on the top of the rotating ring 6 via a vibration mechanism. The filter plate 7 is circular, with its center and circumference at a relatively high horizontal level. A rotating mechanism is provided on the outer wall of the rotating ring 6. A transmission cavity 18 is opened inside the cover 3. A circular hole is opened on the bottom inner wall of the transmission cavity 18. A concave cylinder 22 is rotatably mounted inside the circular hole. The wall is equipped with a crushing mechanism, and the rotating mechanism and the crushing mechanism are connected through a drive mechanism. The washing tank 2 is equipped with a material collection mechanism, which is connected to the rotating ring 6. The washing tank 2 is equipped with a spray buffer mechanism, which includes an annular diversion box 35. The annular diversion box 35 is fixedly installed on the inner wall of the periphery of the washing tank 2. Multiple atomizing nozzles 36 are provided on the inner wall of the periphery of the annular diversion box 35. Specifically, the multiple atomizing nozzles 36 are all existing technologies and can be controlled by a PLC controller. They will not be described in detail here. A collection groove is opened on the side of the base 1, and a collection box 5 is slidably installed in the collection groove.

[0023] With the above structure, the contaminated soil to be remediated is put into the rinsing tank 2 and falls above the filter plate 7. Through the action of the rotating mechanism, the rotating ring 6 can be driven to rotate, and then the filter plate 7 can be driven to rotate synchronously under the action of the vibration mechanism. During the rotation, the soil vibrates back and forth, allowing the soil to quickly pass through the filter plate 7. Under the action of the driving mechanism, the crushing mechanism breaks and raks large pieces of soil, further improving the filtration speed. The filtered soil is guided to the center position by the material collection mechanism and then falls onto the spray buffer mechanism. At this time, multiple atomizing nozzles 36 spray out the rinsing liquid to rinse the soil. Through the action of the spray buffer mechanism, the falling rate of the soil can be slowed down, the spray contact area can be increased, and the rinsing liquid can be fully contacted with the soil to complete the rinsing. Finally, the rinsed soil falls into the collection box 5, completing the entire remediation process.

[0024] like Figure 2 and Figure 3 As shown, the vibration mechanism includes multiple sliding shafts 8. The top of the rotating ring 6 has multiple sliding holes. The multiple sliding shafts 8 are slidably disposed in the multiple sliding holes. The top ends of the multiple sliding shafts 8 are fixedly connected to the bottom of the filter plate 7. The bottom ends of the multiple sliding shafts 8 are fixedly installed with upper extrusion hemispheres 10. The rotating ring 6 has multiple vibration chambers, which correspond to the multiple sliding holes. The outer periphery of the multiple sliding shafts 8 is fixedly installed with annular plates 9. The bottom of the multiple annular plates 9 is provided with vibration springs 11. The bottom ends of the multiple vibration springs 11 are fixedly installed on the bottom inner walls of the multiple vibration chambers. The multiple vibration springs 11 are respectively sleeved on the outer periphery of the multiple sliding shafts 8.

[0025] By the above structure, when the rotating ring 6 drives the sliding shaft 8 to rotate, the upper extrusion hemispheres 10 at the bottom end of the sliding shaft 8 can drive the filter plate 7 to produce up-down reciprocating vibration through the extrusion effect and the elastic reset effect of the vibration spring 11. This continuous vibration can accelerate the soil to quickly pass through the filter plate 7, effectively avoid the soil from piling up and blocking on the surface of the filter plate 7, and ensure the high-efficiency and smooth filtering process.

[0026] As shown in Figure 2 and Figure 3 , the vibration mechanism further includes a fixed ring 12 fixedly installed on the inner wall of the periphery of the elution tank 2, and a plurality of lower extrusion hemispheres 13 fixedly installed on the top of the fixed ring 12, which are respectively corresponding to the positions of the upper extrusion hemispheres 10.

[0027] By the above structure, when the rotating ring 6 drives the sliding shaft 8 to rotate, the upper extrusion hemispheres 10 at the bottom end of the sliding shaft 8 will continuously extrude the lower extrusion hemispheres 13 on the top of the fixed ring 12, which can drive the filter plate 7 to produce stable vibration effect through the elastic reset effect of the vibration spring 11.

[0028] As shown in Figure 2 , Figure 4 and Figure 5 , the rotating mechanism includes an annular rack 14, and the inner wall of the periphery of the elution tank 2 is provided with an annular groove, and the annular rack 14 is movably arranged in the annular groove. The annular rack 14 is fixedly sleeved on the outer wall of the rotating ring 6. The side of the annular groove is provided with a transmission groove 15, and the inner wall of the top of the transmission groove 15 is provided with a first rotating hole. A rotating shaft 16 is rotatably installed in the first rotating hole. The bottom end of the rotating shaft 16 extends into the transmission groove 15 and is fixedly sleeved with a transmission gear 17. The transmission gear 17 is meshingly installed with the annular rack 14. The top end of the rotating shaft 16 is provided with a cross groove.

[0029] By the above structure, when the rotating shaft 16 rotates, the transmission gear 17 precisely meshes with the annular rack 14, which converts the rotary motion of the rotating shaft 16 into the circumferential motion of the rotating ring 6. Through the arrangement of the annular groove, stable motion guidance is provided for the annular rack 14, which ensures the stable operation of the rotating ring 6, and further drives the filter plate 7 to rotate synchronously, realizes the uniform spreading of the soil, and provides a uniform material basis for the subsequent filtering and processing procedures.

[0030] As shown in Figure 2 and Figure 6 , the crushing mechanism includes a rotating rod 25, and the outer wall of the periphery of the concave cylinder 22 is provided with a second rotating hole. The rotating rod 25 is rotatably installed in the second rotating hole. One end of the rotating rod 25 is fixedly sleeved with a crushing roller 26. The top inner wall of the transmission cavity 18 is fixedly installed with a fixed shaft 27. The bottom end of the fixed shaft 27 is rotatably installed on the inner wall at the bottom end of the concave cylinder 22. The fixed shaft 27 is fixedly sleeved with a fixed bevel gear 28. The other end of the rotating rod 25 is fixedly sleeved with a rotating bevel gear 29.

[0031] By the above structure, when the concave cylinder 22 rotates, the rotating rod 25 revolves around the axis with it, and the rotating rod 25 can drive the rotating bevel gear 29 to rotate synchronously. Since the fixed bevel gear 28 is fixedly arranged, the rotating bevel gear 29 can drive the rotating rod 25 and the crushing roller 26 to rotate synchronously through the meshing action with the fixed bevel gear 28. Through the coordinated action of revolution and rotation, the crushing roller 26 can fully contact the soil to efficiently complete the crushing operation, thereby effectively preventing the filter plate 7 from being blocked by large pieces of soil and ensuring the smoothness of the filtering channel.

[0032] As shown in Figure 2 and Figure 6 , the peripheral outer wall of the concave cylinder 22 is fixedly installed with two fixed rods 39, and the peripheral outer wall of each of the two fixed rods 39 is provided with a harrow 40. The two harrows 40 are arranged in a staggered manner.

[0033] By the above structure, the two staggered harrows 40 can play a role of raking the soil on the filter plate 7 when the concave cylinder 22 rotates. The staggered design can ensure that the raking range is more comprehensive, prevent soil clumping, make the soil particles more dispersed, facilitate the filtration of the filter plate 7 and the subsequent leaching treatment, and improve the contact area between the soil and the leaching liquid.

[0034] As shown in Figure 2 , Figure 5 and Figure 6 , the driving mechanism includes a driving motor 4, which is fixedly installed on the top of the box cover 3. Specifically, the driving motor 4 can be controlled by a PLC controller. The output shaft of the driving motor 4 penetrates into the transmission cavity 18. The top inner wall of the transmission cavity 18 is rotatably installed with a linkage shaft 19. The bottom end of the linkage shaft 19 extends out of the transmission cavity 18 and is fixedly installed with a cross-shaped clamping block 41. The bottom end of the cross-shaped clamping block 41 extends into a cross-shaped groove. The peripheral outer wall of the output shaft of the driving motor 4 and the peripheral outer wall of the linkage shaft 19 are both fixedly sleeved with a first synchronous pulley 20. The two first synchronous pulleys 20 are jointly meshed with a first synchronous belt 21. The peripheral outer wall of the output shaft of the driving motor 4 and the peripheral outer wall of the concave cylinder 22 are both fixedly sleeved with a second synchronous pulley 23. The two second synchronous pulleys 23 are jointly meshed with a second synchronous belt 24.

[0035] By the above structure, the driving motor 4 is started. Through the transmission action of the first synchronous pulley 20, the first synchronous belt 21, the second synchronous pulley 23, and the second synchronous belt 24, the power of the driving motor 4 is transmitted to the linkage shaft 19 and the concave cylinder 22 respectively, realizing the reverse rotation function of the rotating ring 6 and the concave cylinder 22, improving the crushing effect on the soil, and improving the overall work efficiency As shown in Figure 8 and Figure 9As shown, the blanking concentrating mechanism includes a conical cylinder 30 rotatably mounted on the inner wall of the side of the leaching box 2, the bottom end of the conical cylinder 30 is provided with a discharge pipe, and the inner wall of the side of the conical cylinder 30 is fixedly mounted with a plurality of arc-shaped connecting plates 31, and the top side outer wall of each of the plurality of arc-shaped connecting plates 31 is fixedly connected with the inner wall of the side of the rotating ring 6.

[0036] Through the above structure, the blanking concentrating mechanism can concentrate and guide the soil filtered by the filter plate 7, and through the conical design of the conical cylinder 30, the soil can be naturally guided to the center, and at the same time, the rotating ring 6 drives the conical cylinder 30 to rotate synchronously through the arc-shaped connecting plates 31, effectively avoiding the adhesion of the soil to the inner wall, ensuring smooth falling of the soil to the preset position, and providing concentrated and orderly material conditions for subsequent spraying treatment.

[0037] As shown in Figure 8 and Figure 10 , the spraying buffer mechanism further includes a conical flow guide disc 32 and a water pump 37, a liquid storage cavity 38 is arranged in the base 1, the water pump 37 is fixedly mounted on the top of the base 1, the side of the water pump 37 is provided with a liquid inlet pipe, the other end of the liquid inlet pipe extends into the liquid storage cavity 38, the top end of the water pump 37 is connected with a liquid supply pipe, the other end of the liquid supply pipe is in communication with the inside of the annular shunt box 35, the bottom of the filter plate 7 is fixedly mounted with a connecting shaft 33, the conical flow guide disc 32 is fixedly sleeved on the outer wall of the connecting shaft 33, specifically, the bottom end of the connecting shaft 33 passes through the discharge pipe and is fixedly connected with the conical flow guide disc 32, the conical flow guide disc 32 is located directly below the conical cylinder 30, the bottom end of the connecting shaft 33 is fixedly mounted with a limiting plate 34, and the inclined surface of the conical flow guide disc 32 is uniformly provided with a plurality of convex points.

[0038] Through the above structure, after starting the water pump 37, the leaching liquid is delivered to the annular shunt box 35, and uniform mist spraying is formed through the plurality of atomizing nozzles 36 on the inner wall of the side of the annular shunt box 35, the conical flow guide disc 32 adopts an inclined conical surface design, when the soil falls onto the surface of the conical flow guide disc 32, it will naturally roll down along the conical surface, the convex points on the conical surface can effectively slow down the rolling speed of the soil, and at the same time, the connecting shaft 33 drives the conical flow guide disc 32 to rotate synchronously with the filter plate 7, avoiding the soil from staying on the conical surface, this structure design prolongs the rolling path and time of the soil on the conical surface, significantly increases the contact area and action time of the soil and the atomized leaching liquid, makes the pollutants fully dissolved in the leaching liquid, and greatly improves the thoroughness of the soil leaching repair.

[0039] The leaching method of the leaching device for repairing contaminated soil includes the following steps: Step one, the soil into the leaching box 2, start the drive motor 4, by the meshing of the two first synchronous pulley 20 and the first synchronous belt 21, drive the linkage shaft 19 rotation, through the cross block 41 and the cross slot connection, make the rotating shaft 16 rotation, use the meshing of the transmission gear 17 and the ring gear 14, let the rotating ring 6 and the drive motor 4 reverse rotation, the rotating ring 6 through a plurality of slide shaft 8 drive filter plate 7 synchronous rotation, the falling soil evenly on the filter plate 7, improve the filtering speed; Step two, when the rotating ring 6 rotates, drive a plurality of slide shaft 8 synchronous rotation, make the upper extrusion hemisphere 10 at the bottom of the slide shaft 8 rotate around the axis, constantly extruding the lower extrusion hemisphere 13, by the elasticity of the plurality of vibration springs 11, make the filter plate 7 continue to vibrate, further improve the filtering rate, prevent the soil from accumulating on the filter plate 7; Step three, when the output shaft of the drive motor 4 rotates, through the meshing of the two second synchronous pulley 23 and the second synchronous belt 24, drive the concave cylinder 22 synchronous rotation, the concave cylinder 22 rotation drive the rotating rod 25, broken roller 26 rotation around the axis, when the rotating rod 25 rotates, drive the rotating bevel gear 29 and the fixed bevel gear 28 meshing, make the rotating rod 25, broken roller 26 rotation, crush the large block of soil, at the same time, the concave cylinder 22 drive two fixed rod 39 and nail rake 40 rotation, rake the soil on the filter plate 7; Step four, after the soil filtered by the filter plate 7 falls, it is guided to the middle position by the lower conical cylinder 30, when the rotating ring 6 rotates, drive the conical cylinder 30 rotation through a plurality of arc-shaped connecting plates 31, avoid the soil adhering to the inner wall, the soil is guided to the center of the conical guide disc 32 by the conical cylinder 30, the filter plate 7 rotation drive the conical guide disc 32 synchronous rotation through the connecting shaft 33, cooperate with the convex point let the soil roll from the inclined surface, the water pump 37 pump the leaching liquid to the ring-shaped shunt box 35, spray to the soil through the atomizing nozzle 36, prolong the spraying time, increase the area, the soil after leaching falls into the collection box 5 for convenient transportation.

[0040] The working principle and use process of the present application are as follows: in use, the preliminarily treated soil is put into the leaching box 2 through the feeding hopper, the driving motor 4 is started, the meshing action between the two first synchronous pulleys 20 and the first synchronous belt 21 can drive the linkage shaft 19 to rotate, and then the rotating shaft 16 is driven to rotate under the connecting action of the cross block 41 and the cross groove, the meshing action between the transmission gear 17 and the annular rack 14 can drive the rotating ring 6 and the driving motor 4 to rotate reversely, when the rotating ring 6 rotates, the meshing action between the plurality of slide shafts 8 can drive the filter plate 7 to rotate synchronously, the falling soil is evenly sprinkled on the filter plate 7, and the filtering speed is improved. When the rotating ring 6 rotates, the plurality of slide shafts 8 rotate synchronously, and then the upper extrusion hemispheres 10 at the bottom of the plurality of slide shafts 8 are continuously extruded by the plurality of lower extrusion hemispheres 13 when rotating around the shaft center, the filter plate 7 continuously vibrates through the elastic action of the plurality of vibration springs 11, the filtering speed of the soil is further improved, and the soil is prevented from piling up on the filter plate 7.

[0041] When the output shaft of the driving motor 4 rotates, the meshing action between the two second synchronous pulleys 23 and the second synchronous belt 24 can drive the concave cylinder 22 to rotate synchronously, the rotating cylinder 22 drives the rotating rod 25 and the crushing roller 26 to rotate around the shaft center, when the rotating rod 25 rotates, the rotating bevel gear 29 meshes with the fixed bevel gear 28, so that the rotating rod 25 and the crushing roller 26 rotate, the large pieces of soil are crushed, and at the same time, the rotating cylinder 22 drives the two fixed rods 39 and the two spike harrows 40 to rotate, so that the soil on the filter plate 7 is raked and scattered.

[0042] When the soil filtered by the filter plate 7 falls, the soil is guided to the middle position by the conical cylinder 30 arranged below, and when the rotating ring 6 rotates, the meshing action between the plurality of arc-shaped connecting plates 31 can drive the conical cylinder 30 to rotate, so that the soil is prevented from adhering to the inner wall of the conical cylinder 30, and the material is guided to the center position of the conical guide disc 32 by the guiding action of the conical cylinder 30.

[0043] When the filter plate 7 rotates, the meshing action between the connecting shaft 33 can drive the conical guide disc 32 to rotate synchronously, and the meshing action between the plurality of convex points can make the soil roll down from the inclined surface of the conical guide disc 32, at this time, the leaching liquid is pumped from the liquid storage cavity 38 to the annular distribution box 35 by the water pump 37, and a plurality of atomizing nozzles 36 spray the soil surface, the soil rolls on the conical guide disc 32, the spraying time is prolonged, the spraying area of the soil is increased, the leaching is more thorough, and the leached soil falls into the collection box 5, which is convenient for subsequent centralized transportation.

[0044] The above merely describes preferred embodiments of the present application, but does not limit the present application to other forms, and any skilled person in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution content of the present application and according to the technical essence of the present application still belongs to the protection scope of the technical solution of the present application.

Claims

1. A leaching device for contaminated soil remediation, comprising a base (1), characterized in that: A rinsing tank (2) is fixedly installed on the top of the base (1). A cover (3) is provided on the top of the rinsing tank (2). A rotating ring (6) is rotatably installed on the inner wall of the circumference of the rinsing tank (2). A filter plate (7) is movably installed on the top of the rotating ring (6) through a vibration mechanism. The filter plate (7) is circular in design, with its center and circumference at a relatively high horizontal height. A rotating mechanism is provided on the outer wall of the rotating ring (6). A transmission cavity (18) is opened inside the cover (3). A circular hole is opened on the bottom inner wall of the transmission cavity (18). A concave cylinder (22) is rotatably installed inside the circular hole. The concave cylinder (22) has a circumference of... A crushing mechanism is provided on the outer side wall. The rotating mechanism and the crushing mechanism are connected by a driving mechanism. A material collection mechanism is provided inside the washing tank (2). The material collection mechanism is connected to the rotating ring (6). A spray buffer mechanism is provided inside the washing tank (2). The spray buffer mechanism includes an annular diversion box (35). The annular diversion box (35) is fixedly installed on the inner wall of the periphery of the washing tank (2). A plurality of atomizing nozzles (36) are provided on the inner wall of the periphery of the annular diversion box (35). A collection groove is opened on the side of the base (1). A collection box (5) is slidably installed in the collection groove.

2. The leaching device for contaminated soil remediation according to claim 1, characterized in that: The vibration mechanism includes multiple sliding shafts (8), which are slidably mounted on the rotating ring (6). The top ends of the multiple sliding shafts (8) are fixedly connected to the bottom of the filter plate (7). The bottom ends of the multiple sliding shafts (8) are fixedly mounted with upper extrusion hemispheres (10). Multiple vibration chambers are opened inside the rotating ring (6). The multiple sliding shafts (8) pass through the multiple vibration chambers respectively. The outer periphery of the multiple sliding shafts (8) is fixedly mounted with annular plates (9). The bottom of the multiple annular plates (9) is provided with vibration springs (11).

3. The leaching device for contaminated soil remediation according to claim 2, characterized in that: The vibration mechanism also includes a fixing ring (12), which is fixedly installed on the inner wall of the circumferential side of the rinsing tank (2). Multiple lower extrusion hemispheres (13) are fixedly installed on the top of the fixing ring (12).

4. The leaching device for contaminated soil remediation according to claim 1, characterized in that: The rotating mechanism includes an annular rack (14), and an annular groove is provided on the inner wall of the circumferential side of the rinsing tank (2). The annular rack (14) is movably disposed in the annular groove. The annular rack (14) is fixedly sleeved on the outer wall of the circumferential side of the rotating ring (6). A transmission groove (15) is provided on the side of the annular groove. A first rotating hole is provided on the inner wall of the top of the transmission groove (15). A rotating shaft (16) is rotatably installed in the first rotating hole. The bottom end of the rotating shaft (16) extends into the transmission groove (15) and is fixedly sleeved with a transmission gear (17). A cross groove is provided on the top end of the rotating shaft (16).

5. The leaching device for contaminated soil remediation according to claim 1, characterized in that: The crushing mechanism includes a rotating rod (25), and a second rotating hole is provided on the outer wall of the concave cylinder (22). The rotating rod (25) is rotatably installed in the second rotating hole. A crushing roller (26) is fixedly sleeved on one end of the rotating rod (25). A fixed shaft (27) is fixedly installed on the top inner wall of the transmission cavity (18). The bottom end of the fixed shaft (27) is rotatably installed on the bottom inner wall of the concave cylinder (22). A fixed bevel gear (28) is fixedly sleeved on the fixed shaft (27). A rotating bevel gear (29) is fixedly sleeved on the other end of the rotating rod (25).

6. The leaching device for contaminated soil remediation according to claim 1, characterized in that: Two fixing rods (39) are fixedly installed on the outer periphery of the concave cylinder (22). The outer periphery of the two fixing rods (39) is provided with rakes (40), and the two rakes (40) are staggered.

7. The leaching device for contaminated soil remediation according to claim 1, characterized in that: The driving mechanism includes a drive motor (4), which is fixedly installed on the top of the cover (3). The output shaft of the drive motor (4) passes through the transmission cavity (18). A linkage shaft (19) is rotatably installed on the top inner wall of the transmission cavity (18). The bottom end of the linkage shaft (19) extends to the outside of the transmission cavity (18) and is fixedly installed with a cross-shaped locking block (41). The outer periphery of the output shaft of the drive motor (4) and the outer periphery of the linkage shaft (19) are both fixedly sleeved with first synchronous pulleys (20). A first synchronous belt (21) is meshed on the two first synchronous pulleys (20). A second synchronous pulley (23) is fixedly sleeved on the outer periphery of the output shaft of the drive motor (4) and the outer periphery of the concave cylinder (22). A second synchronous belt (24) is meshed on the two second synchronous pulleys (23).

8. The leaching device for contaminated soil remediation according to claim 1, characterized in that: The material collection mechanism includes a conical cylinder (30), which is rotatably installed on the inner wall of the washing tank (2). A discharge pipe is provided at the bottom end of the conical cylinder (30). Multiple arc-shaped connecting plates (31) are fixedly installed on the inner wall of the conical cylinder (30). The outer wall of the top of the multiple arc-shaped connecting plates (31) is fixedly connected to the inner wall of the rotating ring (6).

9. The leaching device for contaminated soil remediation according to claim 1, characterized in that: The spray buffer mechanism also includes a conical guide plate (32) and a water pump (37). A liquid storage chamber (38) is provided in the base (1). The water pump (37) is fixedly installed on the top of the base (1). An inlet pipe is provided on the side of the water pump (37). The other end of the inlet pipe extends into the liquid storage chamber (38). A supply pipe is connected to the top of the water pump (37). The other end of the supply pipe is connected to the inside of the annular diversion box (35). A connecting shaft (33) is fixedly installed at the bottom of the filter plate (7). The conical guide plate (32) is fixedly sleeved on the outer wall of the connecting shaft (33). A limit plate (34) is fixedly installed at the bottom of the connecting shaft (33). Multiple protrusions are evenly provided on the inclined surface of the conical guide plate (32).

10. A leaching method applied to the leaching apparatus for contaminated soil remediation according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Put the soil into the washing tank (2), start the drive motor (4), and drive the linkage shaft (19) to rotate by meshing the two first synchronous pulleys (20) with the first synchronous belt (21). Through the connection of the cross block (41) and the cross groove, the rotating shaft (16) rotates. By meshing the transmission gear (17) and the ring rack (14), the rotating ring (6) rotates in the opposite direction to the drive motor (4). The rotating ring (6) drives the filter plate (7) to rotate synchronously through multiple sliding shafts (8), and the falling soil is evenly sprinkled on the filter plate (7) to improve the filtration speed. Step 2: When the rotating ring (6) rotates, it drives multiple sliding shafts (8) to rotate synchronously, causing the upper squeezing hemisphere (10) at the bottom of the sliding shaft (8) to rotate around the axis and continuously squeeze with multiple lower squeezing hemispheres (13). With the help of the elasticity of multiple vibrating springs (11), the filter plate (7) vibrates continuously, further improving the filtration rate and preventing soil from accumulating on the filter plate (7). Step 3: When the output shaft of the drive motor (4) rotates, the two second synchronous pulleys (23) and the second synchronous belt (24) mesh to drive the concave cylinder (22) to rotate synchronously. The rotation of the concave cylinder (22) drives the rotating rod (25) and the crushing roller (26) to rotate around the axis. When the rotating rod (25) rotates, it drives the rotating bevel gear (29) to mesh with the fixed bevel gear (28), so that the rotating rod (25) and the crushing roller (26) rotate on their own, crushing large pieces of soil. At the same time, the concave cylinder (22) drives the two fixed rods (39) and the rake (40) to rotate, rake and disperse the soil on the filter plate (7). Step 4: After the soil filtered by the filter plate (7) falls, it is guided to the middle position by the lower conical cylinder (30). When the rotating ring (6) rotates, it drives the conical cylinder (30) to rotate through multiple arc-shaped connecting plates (31) to prevent the soil from sticking to the inner wall. The soil is guided to the center of the conical guide plate (32) through the conical cylinder (30). The rotation of the filter plate (7) drives the conical guide plate (32) to rotate synchronously through the connecting shaft (33). With the help of the protrusions, the soil rolls down from the slope. The water pump (37) draws the rinsing liquid to the annular distribution box (35) and sprays it onto the soil through the atomizing nozzle (36) to extend the spraying time and increase the area. The rinsed soil falls into the collection box (5) for easy transportation.

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