Soil treatment device for pollution type foundation

Abstract

The invention relates to a pollution type foundation soil treatment device and belongs to the technical field of soil remediation. The pollution type foundation soil treatment device comprises a leaching tower, a guide cylinder is arranged on the leaching tower, the bottom of the guide cylinder communicates with an inlet of the leaching tower, a feeding pipe is arranged on one side of the guide cylinder, and a conveying belt is installed on the other side of the guide cylinder; and mounting seats are fixedly mounted on the peripheral surface of the conveying belt at intervals, filter plates for filtering slag stones with large particle sizes are arranged on the mounting seats, and the filter plates located in the guide cylinders move from bottom to top. The soil screening device has the advantages that the soil screening effect is improved, and then the soil cleaning effect of the device is enhanced.

Description

Technical Field

[0001] This application relates to the field of soil remediation, and in particular, to a device for treating polluted foundation soil. Background Art

[0002] After many polluting enterprises originally located in urban areas moved out of the city center, a large number of polluted sites were left behind. According to investigations, heavy metal pollution is relatively common in the land used by heavily polluting enterprises, industrial abandoned lands, industrial parks, and mining areas. There are relatively serious organic pollution problems in areas such as solid waste centralized treatment and disposal sites and oil production areas. There are compound pollutions of inorganic and organic pollutants in sewage irrigation areas and on both sides of arterial highways.

[0003] For contaminated soil, there are many common remediation methods, including soil washing, chemical treatment, bioremediation, and thermal grooming, etc. Among them, soil washing is to send the contaminated soil into a leaching device and use the spraying method to make the chemical solution contact the heavy metal or petroleum pollution components in the soil, thereby completing soil purification.

[0004] In related technologies, when performing soil leaching remediation, the soil needs to be first sent into the leaching device. The soil often contains some relatively large-sized slag stones. On the one hand, these slag stones are likely to damage the internal stirring components of the leaching device, and on the other hand, they are likely to block the internal filtering components of the leaching device, thereby affecting the cleaning effect of the soil. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for treating polluted foundation soil with a simple structure and reasonable design in order to solve the above problems.

[0006] The present invention realizes the above purpose through the following technical solutions:

[0007] A device for treating polluted foundation soil includes a leaching tower. A guiding cylinder is provided on the leaching tower. The bottom of the guiding cylinder is communicated with the inlet of the leaching tower. A feed pipe is provided on one side of the guiding cylinder, and a conveyor belt is installed on the other side of the guiding cylinder. Mounting seats are fixedly installed at intervals on the outer peripheral surface of the conveyor belt. A filter plate for filtering relatively large-sized slag stones is provided on the mounting seats. The filter plate located inside the guiding cylinder moves from bottom to top.

[0008] By adopting the above technical solution, the unpurified soil enters the guiding cylinder through the feed pipe. The conveyor belt drives the mounting seats to move, and the movement of the mounting seats drives the filter plate to move. The filter plate filters the soil inside the guiding cylinder, so that the relatively large-sized slag stones move out of the guiding cylinder along with the filter plate, and the fine soil enters the leaching tower along the guiding cylinder, which is beneficial to improving the screening effect of the device on the soil, and further improving the cleaning effect of the device on the soil.

[0009] Preferably, an installation groove for plugging and cooperating with the filter plate is formed on the installation seat. A positioning bolt for penetrating the filter plate is arranged on the installation seat. The positioning bolt is slidably matched with the filter plate and is threadedly matched with the installation seat. Positioning springs are arranged on both side surfaces of the filter plate located in the installation groove, and the positioning springs are sleeved on the positioning bolts.

[0010] By adopting the above technical solution, the arrangement of the installation groove and the positioning bolt facilitates the operator to install the filter plate on the installation seat. The arrangement of the positioning springs enables the filter plate to vibrate within a certain range. When the soil in the feed pipe impacts the filter plate, the filter plate vibrates, causing the soil to spread. On the one hand, it increases the contact area between the soil and the filter plate, and on the other hand, it helps to prevent the filter plate from being blocked.

[0011] Preferably, a receiving groove is formed on the inner side wall of the guide cylinder away from the conveyor belt. A rotating rod is rotatably arranged on the inner side wall of the receiving groove. A baffle for abutting against the filter plate is fixedly connected to the rotating rod. A torsion spring is sleeved on the rotating rod. One end of the torsion spring is fixedly connected to the rotating rod, and the other end of the torsion spring is fixedly connected to the inner side wall of the receiving groove.

[0012] By adopting the above technical solution, the arrangement of the baffle is beneficial in flattening part of the soil above the filter plate on the one hand, enabling the soil to contact the filter plate evenly, and on the other hand, the baffle and the positioning springs cooperate to enable the filter plate to vibrate again, further improving the soil filtering effect. The cooperation between the rotating rod and the torsion spring is beneficial for resetting the baffle.

[0013] Preferably, a hair dryer is installed on one side of the top of the guide cylinder, and a collection assembly is installed on the other side of the top of the guide cylinder. The collection assembly includes a first collection pipe fixedly connected to the guide cylinder for collecting slag and stones, and a second collection pipe fixedly connected to the first collection pipe. The bottom of the second collection pipe is communicated with the feed pipe.

[0014] By adopting the above technical solution, when the filter plate moves the mixture of slag and stones to the top of the guide cylinder, the hair dryer causes the slag and stones to move. Due to the different weights of the two, the slag moves to the first collection pipe close to the guide cylinder, and the soil moves into the second collection pipe and finally enters the feed pipe again.

[0015] Preferably, the leaching tower includes a first tower body and a second tower body fixedly connected to the first tower body. A stirring cavity for communicating with the guide cylinder is formed in the second tower body. A spray pipe for conveying the purification liquid is installed on the inner side wall of the stirring cavity. Spray heads are installed at intervals on the spray pipe, and the orientations of the spray heads are arranged staggeredly.

[0016] By adopting the above technical solution, the purification liquid enters the stirring cavity of the first tower body through the spray pipe and is sprayed out through the nozzle. A part of the purification liquid impacts the soil and the filter plate upward, on the one hand, improving the contact effect between the soil and the purification liquid, and on the other hand, preventing the filter plate from being blocked. Another part of the purification liquid impacts the stirring cavity downward to ensure the mixing effect of the purification liquid and the soil.

[0017] Preferably, a first motor is installed in the first tower body. A driving rod is fixedly connected to the output shaft of the first motor. The top of the driving rod extends into the stirring cavity. Stirring rods are spacedly installed on the driving rod located in the stirring cavity. Scrapers for slidably cooperating with the inner side wall of the stirring cavity are fixedly connected to both ends of the stirring rod.

[0018] By adopting the above technical solution, the output shaft of the first motor drives the driving rod to rotate. The driving rod drives the stirring rod and the scraper to rotate. The rotation of the stirring rod is beneficial to improving the mixing effect of the soil and the purification liquid. The setting of the scraper is beneficial to preventing wet soil from adhering to the inner side wall of the stirring cavity.

[0019] Preferably, a filtering cavity for communicating with the stirring cavity is formed in the first tower body. A filter screen is installed on the inner bottom surface of the filtering cavity. The filter screen is arranged around the driving rod. Receiving plates are spacedly installed on the driving rod located in the filtering cavity. The outer peripheral surface of the receiving plate slidably cooperates with the inner side wall of the filter screen. A communication hole is formed in the receiving plate. An outlet pipe for discharging fine soil is installed on the inner bottom surface of the filtering cavity.

[0020] By adopting the above technical solution, the wet soil in the stirring cavity falls onto the receiving plate in the filtering cavity. The driving rod rotates to drive the receiving plate to rotate. The water in the wet soil passes through the filter screen due to centrifugal force. The dry soil falls successively through the communication holes. The setting of multiple receiving plates is beneficial to ensuring that the soil at different heights is filtered.

[0021] Preferably, two receiving plates are provided at the same height of the driving rod. The two receiving plates are arranged staggeredly. The receiving plates are all rotationally matched with the driving rod. Tail blocks are slidably installed at the bottoms of the receiving plates. A moving rod is hinged to the tail block. A fixed sleeve is sleeved on the moving rod. The fixed sleeve is hinged to the driving rod. A return spring is arranged in the fixed sleeve. One end of the return spring is fixedly connected to the moving rod, and the other end of the return spring is fixedly connected to the fixed sleeve.

[0022] By adopting the above technical solution, when there is a large amount of soil on a single receiving plate, the gravity of the soil causes the side of the receiving plate away from the driving rod to deflect. At this time, the dovetail block drives the moving rod to move, and the return spring is in a compressed state, enabling the soil on the receiving plate to quickly fall through the gap. The setting of the return spring facilitates the reset of the receiving plate, and the vibration of the receiving plate further accelerates the soil falling efficiency.

[0023] Preferably, a drain pipe for discharging wastewater is installed on the inner bottom surface of the filtering cavity. A moving ring is arranged on the inner side wall of the filtering cavity. A plurality of water leakage holes are formed in the moving ring. The outer peripheral surface of the moving ring is slidably matched with the inner side wall of the filtering cavity, and the inner peripheral surface of the moving ring is slidably matched with the filter net. A second motor is installed on the top of the first tower body. A reciprocating lead screw is fixedly connected to the output shaft of the second motor. The reciprocating lead screw penetrates through the moving ring and is rotationally matched with the inner bottom surface of the filtering cavity. The reciprocating lead screw is in threaded cooperation with the moving ring.

[0024] By adopting the above technical solution, when the second motor is started, the output shaft of the second motor drives the reciprocating lead screw to move. The reciprocating lead screw drives the moving ring to reciprocate along the height direction of the reciprocating lead screw. The setting of the moving ring is beneficial to cleaning the inner side wall of the filtering cavity and the filter net, and the wastewater moves out of the filtering cavity through the drain pipe.

[0025] Preferably, a first partition board is fixedly installed at the bottom of the stirring cavity. A plurality of first through holes are spaced apart on the first partition board. A second partition board is rotatably installed at the bottom of the first partition board. A plurality of second through holes for cooperating with the first through holes are spaced apart on the second partition board. A gear ring is fixedly connected to the outer peripheral surface of the second partition board. A connecting gear is installed on the output shaft of the second motor. The connecting gear is meshed with the gear ring.

[0026] By adopting the above technical solution, the rotation of the output shaft of the second motor drives the connecting gear to rotate. The connecting gear drives the gear ring to rotate. The rotation of the gear ring drives the second partition board to rotate. When the second through holes on the second partition board are communicated with the first through holes on the first partition board, the moist soil in the stirring cavity falls. The cooperation of the first partition board and the second partition board is beneficial to adjusting the soil falling rate.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The unpurified soil enters the guiding cylinder through the feeding pipe. The conveyor belt drives the mounting seat to move. The movement of the mounting seat drives the filter plate to move. The filter plate filters the soil in the guiding cylinder, enabling the larger particle-size slag stones to move out of the guiding cylinder along with the filter plate, and the fine soil enters the leaching tower along the guiding cylinder, which is beneficial to improving the screening effect of the device on the soil and further improving the cleaning effect of the device on the soil;

[0029] 2. The installation groove and the positioning bolt are provided to facilitate the operator to install the filter plate onto the mounting seat. The positioning spring is provided to enable the filter plate to vibrate within a certain range. When the soil in the feed pipe impacts the filter plate, the filter plate vibrates, causing the soil to spread. On the one hand, it increases the contact area between the soil and the filter plate, and on the other hand, it helps to prevent the filter plate from being blocked.

[0030] 3. The wet soil in the stirring cavity falls onto the receiving plate in the filtering cavity. The driving rod rotates to drive the receiving plate to rotate. The moisture in the wet soil passes through the filter net due to centrifugal force, and the dry soil falls successively through the communication holes. The setting of multiple receiving plates helps to ensure that the soil at different heights is filtered. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the device for treating contaminated foundation soil according to an embodiment of the present application.

[0032] Figure 2 is a schematic structural diagram of the guiding cylinder according to an embodiment of the present application.

[0033] Figure 3 is a schematic internal structural diagram of the guiding cylinder according to an embodiment of the present application.

[0034] Figure 4 is a schematic internal structural diagram of the leaching tower according to an embodiment of the present application.

[0035] Figure 5 is a schematic internal structural diagram of the receiving plate according to an embodiment of the present application.

[0036] Description of the Reference Numerals: 1, leaching tower; 11, first tower body; 12, second tower body; 13, stirring cavity; 14, spray pipe; 141, nozzle; 15, first motor; 16, driving rod; 17, stirring rod; 18, scraper; 2, guiding cylinder; 21, feed pipe; 22, driving roller; 23, driven roller; 24, driving motor; 25, conveyor belt; 26, receiving groove; 27, rotating rod; 28, baffle; 29, torsion spring; 3, mounting seat; 31, filter plate; 32, installation groove; 33, positioning bolt; 34, positioning spring; 4, collection assembly; 41, first collection pipe; 42, second collection pipe; 43, blower; 51, first partition; 52, first through hole; 53, second partition; 54, second through hole; 55, gear ring; 56, second motor; 57, connecting gear; 6, filtering cavity; 61, filter net; 63, discharge pipe; 64, receiving plate; 641, communication hole; 65, dovetail block; 66, moving rod; 67, fixed sleeve; 68, return spring; 7, moving ring; 71, water leakage hole; 72, reciprocating screw rod; 73, drain pipe. Detailed Embodiments

[0037] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0038] Reference Figure 1 The device for treating contaminated foundation soil includes a leaching tower 1 and a guide cylinder 2.

[0039] Reference Figure 2 , Figure 3 The guide cylinder 2 is in the shape of a square cylinder, and the guide cylinder 2 is arranged vertically. A feed pipe 21 is arranged on one side of the guide cylinder 2. The feed pipe 21 is in the shape of a direction cylinder, the feed pipe 21 is arranged obliquely, and the feed pipe 21 is connected to the guide cylinder 2. A driving roller 22 is rotatably installed on the top of the guide cylinder 2 on the side away from the feed pipe 21, and a clearance opening is opened at the bottom of the guide cylinder 2 on the side away from the feed pipe 21, and a driven roller 23 is rotatably installed on the inner side wall of the clearance opening. A driving motor 24 is installed on the guide cylinder 2, and the output shaft of the driving motor 24 is fixedly connected to the driving roller 22, and a conveyor belt 25 is wound between the driving roller 22 and the driven roller 23.

[0040] Reference Figure 3 A mounting seat 3 is fixedly mounted on the outer peripheral surface of the conveyor belt 25. The mounting seat 3 is in the shape of a rectangular parallelepiped. The mounting seat 3 is arranged horizontally, and the length of the mounting seat 3 is consistent with the width of the conveyor belt 25. Three mounting seats 3 are provided, and the three mounting seats 3 are arranged at intervals. A filter plate 31 is provided on each mounting seat 3. The filter plate 31 is in the shape of a porous rectangular plate. The filter plate 31 is used to filter the slag with larger particle size. A mounting groove 32 for plugging and matching with the filter plate 31 is provided on the side of the mounting seat 3 away from the conveyor belt 25.

[0041] Reference Figure 3 Two positioning bolts 33 are arranged on the mounting seat 3. The two positioning bolts 33 are arranged at intervals, and the positioning bolts 33 are threadedly matched with the inner bottom surface of the mounting groove 32. The positioning bolts 33 penetrate the filter plate 31, and the positioning bolts 33 and the filter plate 31 are slidably matched. Two positioning springs 34 are sleeved on the positioning bolts 33 located in the mounting groove 32. The two positioning springs 34 are respectively arranged on both sides of the filter plate 31, one side of the positioning spring 34 is tightly pressed against the filter plate 31, and the other side of the positioning spring 34 is tightly pressed against the mounting seat 3.

[0042] The driving motor 24 drives the driving roller 22 to rotate. The driving roller 22 cooperates with the driven roller 23 to move the conveyor belt 25. The conveyor belt 25 drives the mounting seat 3 to move, and further enables the filter plate 31 located in the guiding cylinder 2 to move from bottom to top. The arrangement of the mounting groove 32 and the positioning bolt 33 facilitates the operator to install the filter plate 31 on the mounting seat 3. The arrangement of the positioning spring 34 enables the filter plate 31 to vibrate within a certain range. When the soil in the feed pipe 21 impacts the filter plate 31, the filter plate 31 generates vibration, causing the soil to spread. On the one hand, it increases the contact area between the soil and the filter plate 31, and on the other hand, it helps to prevent the filter plate 31 from being blocked.

[0043] Refer to Figure 3 , at the upper end of the inner side wall of the guiding cylinder 2 away from the conveyor belt 25, a receiving groove 26 is provided. The opening of the receiving groove 26 is rectangular, and the length direction of the receiving groove 26 is the same as the length direction of the guiding cylinder 2. A rotating rod 27 is rotatably mounted on the inner side wall of the receiving groove 26, and a baffle 28 for abutting against the filter plate 31 is fixedly connected to the rotating rod 27. A torsion spring 29 is sleeved on the rotating rod. One end of the torsion spring 29 is fixedly connected to the rotating rod 27, and the other end of the torsion spring 29 is fixedly connected to the inner side wall of the receiving groove 26. When the filter plate 31 contacts the baffle 28, the baffle 28 first causes the position of the filter plate 31 in the mounting groove 32 to move downward. When the filter plate 31 is disengaged from the contact state with the baffle 28, the positioning spring 34 causes the filter plate 31 to reset. The cooperation between the baffle 28 and the positioning spring 34 can cause the filter plate 31 to vibrate again, further improving the soil filtration effect.

[0044] Refer to Figure 2 , Figure 3 , a hair dryer 43 is installed on one side of the top of the guiding cylinder 2, and a collecting assembly 4 is installed on the side of the top of the guiding cylinder 2 away from the hair dryer 43. The collecting assembly 4 includes a first collecting pipe 41 and a second collecting pipe 42. The heights of the first collecting pipe 41 and the second collecting pipe 42 are both flush with the height of the driving roller 22. The first collecting pipe 41 is fixedly connected to the outer peripheral surface of the guiding cylinder 2, and the first collecting pipe 41 is used to collect the slag and stones filtered out by the filter plate 31. The second collecting pipe 42 is fixedly connected to the side of the first collecting pipe 41 away from the guiding cylinder 2. The second collecting pipe 42 is used to collect the fine soil between the slag and stones, and the bottom of the second collecting pipe 42 is communicated with the feed pipe 21.

[0045] When the filter plate 31 moves the mixture of slag and stones to the top of the guiding cylinder 2, the hair dryer 43 causes the slag and stones to move. Due to the different weights of the two, the slag and stones move to the first collecting pipe 41 close to the guiding cylinder 2, and the soil moves into the second collecting pipe 42 and finally enters the feed pipe 21 again.

[0046] Refer to Figure 1 , Figure 4, the flushing tower 1 includes a first tower body 11 and a second tower body 12 fixedly connected to the first tower body 11. Both the first tower body 11 and the second tower body 12 are cylindrical. A stirring cavity 13 for communicating with the bottom of the guiding cylinder 2 is formed in the second tower body 12, and the cross-section of the stirring cavity 13 is circular. A spraying pipeline 14 for conveying the purified liquid is installed at the upper end of the second tower body 12. The spraying pipeline 14 extends into the stirring cavity 13. A plurality of nozzles 141 are installed on the spraying pipeline 14 located in the stirring cavity 13. The plurality of nozzles 141 are arranged at intervals, and the nozzles 141 are arranged with staggered orientations.

[0047] Referring to Figure 4 , the purified liquid enters the stirring cavity 13 of the first tower body 11 through the spraying pipeline 14 and is sprayed out through the nozzles 141. A part of the purified liquid impacts the soil and the filter plate 31 upward, on the one hand, improving the contact effect between the soil and the purified liquid, and on the other hand, preventing the filter plate 31 from being blocked. Another part of the purified liquid impacts the stirring cavity 13 downward to ensure the mixing effect of the purified liquid and the soil.

[0048] Referring to Figure 4 , a first motor 15 is installed at the bottom of the first tower body 11. The axis of the output shaft of the first motor 15 coincides with the axis of the first tower body 11, and a driving rod 16 is fixedly connected to the output shaft of the first motor 15. The axis of the driving rod 16 coincides with the axis of the output shaft of the first motor 15. The top of the driving rod 16 extends into the stirring cavity 13. Three stirring rods 17 are installed on the driving rod 16 located in the stirring cavity 13. The three stirring rods 17 are arranged at intervals along the length direction of the driving rod 16. Scrapers 18 are fixedly connected to both ends of the stirring rods 17. The side of the scraper 18 away from the stirring rod 17 is in sliding fit with the inner side wall of the stirring cavity 13. The output shaft of the first motor 15 drives the driving rod 16 to rotate, the driving rod 16 drives the stirring rods 17 and the scrapers 18 to rotate. The rotation of the stirring rods 17 is beneficial to improving the mixing effect of the soil and the purified liquid, and the setting of the scrapers 18 is beneficial to preventing the wet soil from adhering to the inner side wall of the stirring cavity 13.

[0049] Referring to Figure 4, a first partition plate 51 is fixedly installed at the bottom of the stirring cavity 13, and the driving rod 16 penetrates through the first partition plate 51 and is in sliding fit with the first partition plate 51. Two first through holes 52 are formed in the first partition plate 51, and the two first through holes 52 are arranged at intervals. A second partition plate 53 is rotatably installed at the bottom of the first partition plate 51, and the driving rod 16 penetrates through the second partition plate 53 and is in sliding fit with the second partition plate 53. Two second through holes 54 are formed in the second partition plate 53, and the two second through holes 54 correspond to the two first through holes 52. A gear ring 55 is sleeved on the outer peripheral surface of the second partition plate 53, and the gear ring 55 is fixedly connected with the second partition plate 53. A second motor 56 is installed at the top of the first tower body 11, and a connecting gear 57 is fixedly sleeved on the output shaft of the second motor 56, and the connecting gear 57 meshes with the gear ring 55.

[0050] The rotation of the output shaft of the second motor 56 drives the connecting gear 57 to rotate, the connecting gear 57 drives the gear ring 55 to rotate, the rotation of the gear ring 55 drives the second partition plate 53 to rotate. When the second through hole 54 on the second partition plate 53 communicates with the first through hole 52 on the first partition plate 51, the moist soil in the stirring cavity 13 falls, and the cooperation between the first partition plate 51 and the second partition plate 53 is beneficial to adjusting the falling rate of the soil.

[0051] Refer to Figure 4 , a filtering cavity 6 for communicating with the stirring cavity 13 is formed in the first tower body 11, and the cross-section of the filtering cavity 6 is circular. A filter screen 61 is installed on the inner bottom surface of the filtering cavity 6, the top of the filter screen 61 is fixedly connected with the inner top surface of the filtering cavity 6, and the filter screen 61 is arranged around the driving rod 16, and the axis of the filter screen 61 coincides with the axis of the driving rod 16. An outlet pipe 63 for discharging fine soil is installed on the inner bottom surface of the filtering cavity 6.

[0052] Refer to Figure 4 、 Figure 5 , a receiving plate 64 is installed at intervals along the length direction of the driving rod 16 located in the filtering cavity 6, the outer peripheral surface of the receiving plate 64 is in sliding fit with the inner side wall of the filter screen 61, and a plurality of communication holes 641 are formed in the receiving plate 64. There are two receiving plates 64 at the same height of the driving rod 16, the two receiving plates 64 are arranged staggeredly, and the receiving plates 64 are all in rotational fit with the driving rod 16. A dovetail block 65 is slidably installed at the bottom of each receiving plate 64, a moving rod 66 is hinged to the bottom of the dovetail block 65, a fixed sleeve 67 is slidably sleeved on the moving rod 66, and the end of the fixed sleeve 67 away from the moving rod 66 is hinged to the driving rod 16. A return spring 68 is arranged in the fixed sleeve 67, one end of the return spring 68 is fixedly connected with the moving rod 66, and the other end of the return spring 68 is fixedly connected with the inner bottom surface of the fixed sleeve 67.

[0053] The moist soil in the stirring cavity 13 falls onto the receiving plate 64 in the filtering cavity 6. The driving rod 16 rotates to drive the receiving plate 64 to rotate. The water in the moist soil passes through the filter net 61 due to the centrifugal force, and the dry soil falls successively along the communication holes 641. When there is more soil on a single receiving plate 64, the gravity of the soil causes the side of the receiving plate 64 away from the driving rod 16 to deflect. At this time, the dovetail block 65 drives the moving rod 66 to move, and the return spring 68 is in a compressed state, enabling the soil on the receiving plate 64 to quickly fall through the gap. The setting of the return spring 68 facilitates the reset of the receiving plate 64, and the receiving plate 64 vibrates, further accelerating the soil falling efficiency. The setting of multiple receiving plates 64 is beneficial to ensuring that the soil is filtered at different heights.

[0054] Referring to Figure 4 , a moving ring 7 is arranged on the inner side wall of the filtering cavity 6, and a plurality of water leakage holes 71 are formed in the moving ring 7. The outer peripheral surface of the moving ring 7 is in sliding fit with the inner side wall of the filtering cavity 6, and the inner peripheral surface of the moving ring 7 is in sliding fit with the filter net 61. The inner bottom surface of the filtering cavity 6 is rotatably provided with a reciprocating lead screw 72, the reciprocating lead screw 72 is vertically arranged, and the top of the reciprocating lead screw 72 extends out of the first tower body 11 and is fixedly connected to the output shaft of the second motor 56. The reciprocating lead screw 72 penetrates through the moving ring 7, and the reciprocating lead screw 72 is in threaded fit with the moving ring 7. A drain pipe 73 for discharging waste water is installed on the inner bottom surface of the filtering cavity 6.

[0055] Referring to Figure 4 , when the second motor 56 is started, the output shaft of the second motor 56 drives the reciprocating lead screw 72 to move, the reciprocating lead screw 72 drives the moving ring 7 to reciprocate along the height direction of the reciprocating lead screw 72. The setting of the moving ring 7 is beneficial to cleaning the inner side wall of the filtering cavity 6 and the filter net 61, and the waste water moves out of the filtering cavity 6 through the drain pipe 73.

[0056] The implementation principle of an embodiment of a device for treating contaminated foundation soil in this application is as follows: The unpurified soil enters the guiding cylinder 2 through the feeding pipe 21. The conveyor belt 25 drives the mounting seat 3 to move, and the movement of the mounting seat 3 drives the filter plate 31 to move. The filter plate 31 filters the soil in the guiding cylinder 2, enabling the larger particle-size slag stones to move out of the guiding cylinder 2 along with the filter plate 31, and the fine soil enters the leaching tower 1 along the guiding cylinder 2, which is beneficial to improving the screening effect of the device on the soil and further improving the cleaning effect of the device on the soil.

[0057] The above embodiments only represent 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 invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A device for treating contaminated foundation soil, comprising a washing tower (1), characterized in that: The leaching tower (1) is provided with a guide cylinder (2), the bottom of the guide cylinder (2) is connected to the entrance of the leaching tower (1), a feed pipe (21) is provided on one side of the guide cylinder (2), a conveyor belt (25) is installed on the other side of the guide cylinder (2), mounting seats (3) are fixedly installed at intervals on the outer peripheral surface of the conveyor belt (25), and a filter plate (31) for filtering slag with a larger particle size is provided on the mounting seat (3), and the filter plate (31) located in the guide cylinder (2) moves from bottom to top.

2. The device for treating contaminated foundation soil according to claim 1, characterized in that: The mounting seat (3) is provided with a mounting groove (32) for plugging and cooperating with the filter plate (31); the mounting seat (3) is provided with a positioning bolt (33) for penetrating the filter plate (31); the positioning bolt (33) is slidably engaged with the filter plate (31); the positioning bolt (33) is threadedly engaged with the mounting seat (3); and positioning springs (34) are provided on both side surfaces of the filter plate (31) located in the mounting groove (32); the positioning springs (34) are sleeved on the positioning bolts (33).

3. The device for treating contaminated foundation soil according to claim 1, characterized in that: A receiving groove (26) is provided on the inner side wall of the guide cylinder (2) away from the conveyor belt (25); a rotating rod (27) is rotatably provided on the inner side wall of the receiving groove (26); a baffle (28) for contacting the filter plate (31) is fixedly connected to the rotating rod (27); a torsion spring (29) is sleeved on the rotating rod (27); one end of the torsion spring (29) is fixedly connected to the rotating rod (27); and the other end of the torsion spring (29) is fixedly connected to the inner side wall of the receiving groove (26).

4. The device for treating contaminated foundation soil according to claim 1, characterized in that: A blower (43) is installed on one side of the top of the guide cylinder (2), and a collecting assembly (4) is installed on the other side of the top of the guide cylinder (2). The collecting assembly (4) comprises a first collecting pipe (41) fixedly connected to the guide cylinder (2) for collecting slag and stone, and a second collecting pipe (42) fixedly connected to the first collecting pipe (41), and the bottom of the second collecting pipe (42) is connected to the feed pipe (21).

5. The device for treating contaminated foundation soil according to claim 1, characterized in that: The elution tower (1) comprises a first tower body (11) and a second tower body (12) fixedly connected to the first tower body (11); a stirring cavity (13) for communicating with the guide cylinder (2) is provided in the second tower body (12); a spray pipe (14) for conveying a purified liquid is installed on the inner wall of the stirring cavity (13); spray heads (141) are installed at intervals on the spray pipe (14); and the spray heads (141) are arranged in a staggered manner.

6. The device for treating contaminated foundation soil according to claim 5, characterized in that: A first motor (15) is installed in the first tower body (11); a driving rod (16) is fixedly connected to the output shaft of the first motor (15); the top of the driving rod (16) extends into the stirring cavity (13); a stirring rod (17) is installed on the driving rod (16) in the stirring cavity (13) at intervals; and scrapers (18) are fixedly connected at both ends of the stirring rod (17) for slidingly cooperating with the inner wall of the stirring cavity (13).

7. The device for treating contaminated foundation soil according to claim 6, characterized in that: A filter cavity (6) for communicating with the stirring cavity (13) is provided in the first tower body (11); a filter screen (61) is installed on the inner bottom surface of the filter cavity (6); the filter screen (61) is arranged around the driving rod (16); and a receiving plate (64) is installed on the driving rod (16) in the filter cavity (6) at intervals; the outer peripheral surface of the receiving plate (64) is slidably matched with the inner side wall of the filter screen (61); and a connecting hole (641) is provided on the receiving plate (64); and a discharge pipe (63) for discharging fine soil is installed on the inner bottom surface of the filter cavity (6).

8. The device for treating contaminated foundation soil according to claim 7, characterized in that: Two receiving plates (64) are provided at the same height of the driving rod (16), the two receiving plates (64) are arranged in a staggered manner, and the receiving plates (64) are rotatably matched with the driving rod (16), and a dovetail block (65) is slidably installed at the bottom of each receiving plate (64), a moving rod (66) is hinged on the dovetail block (65), a fixed sleeve (67) is sleeved on the moving rod (66), the fixed sleeve (67) is hinged to the driving rod (16), a return spring (68) is provided in the fixed sleeve (67), one end of the return spring (68) is fixedly connected to the moving rod (66), and the other end of the return spring (68) is fixedly connected to the fixed sleeve (67).

9. The device for treating contaminated foundation soil according to claim 7, characterized in that: A drainage pipe (73) for discharging waste water is installed on the inner bottom surface of the filtering cavity (6); a movable ring (7) is arranged on the inner side wall of the filtering cavity (6); a plurality of water leakage holes (71) are opened on the movable ring (7); the outer peripheral surface of the movable ring (7) is slidingly matched with the inner side wall of the filtering cavity (6); the inner peripheral surface of the movable ring (7) is slidingly matched with the filtering net (61); a second motor (56) is installed on the top of the first tower body (11); a reciprocating screw (72) is fixedly connected to the output shaft of the second motor (56); the reciprocating screw (72) passes through the movable ring (7) and is rotationally matched with the inner bottom surface of the filtering cavity (6); the reciprocating screw (72) is threadedly matched with the movable ring (7).

10. The device for treating contaminated foundation soil according to claim 9, characterized in that: A first partition (51) is fixedly mounted on the bottom of the stirring cavity (13), and a first through hole (52) is spaced apart on the first partition (51). A second partition (53) is rotatably mounted on the bottom of the first partition (51), and a second through hole (54) for matching with the first through hole (52) is spaced apart on the second partition (53). A gear ring (55) is fixedly connected to the outer peripheral surface of the second partition (53), and a connecting gear (57) is installed on the output shaft of the second motor (56), and the connecting gear (57) is meshed with the gear ring (55).

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