Heavy metal polluted wetland soil remediation equipment and remediation method

Abstract

The invention discloses heavy metal polluted wetland soil remediation equipment and a remediation method, and belongs to the technical field of soil remediation. Heavy metal polluted wetland soil remediation equipment comprises a mounting frame and further comprises an annular frame, the annular frame is mounted on the mounting frame, a tubular collecting cover is rotatably mounted on the annular frame, a tubular screen is fixedly mounted on the inner wall of the tubular collecting cover, and a driving part for driving the tubular collecting cover to rotate is arranged on the mounting frame; the spray pipe is mounted at the inner bottom of the tubular collecting cover, and a spray head facing the lower port of the tubular collecting cover is fixedly mounted on the spray pipe; the arc-shaped plates are distributed in a circular ring shape and are all arranged in the tubular screen, and the outer walls of the arc-shaped plates are fixedly connected with inserting rods; according to the device, part of water in clay can be thrown into the tubular collecting cover, the content of the water in the clay can be reduced, and the efficiency of repairing the clay by a follow-up modifier is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and in particular to a device and method for remediating wetland soil contaminated by heavy metals. Background Art

[0002] Soil is an important natural resource for human survival and agricultural production. Due to the strong toxicity and easy enrichment of heavy metals, the pollution of soil by heavy metals is difficult to recover in a short period of time. The soil in some areas is contaminated by heavy metals, causing the heavy metal content of crops grown on it to exceed the standard, affecting human health. Soil remediation equipment is needed to repair wetland soil contaminated by heavy metals.

[0003] In the remediation of heavy metal soil, adding amendments to the heavy metal soil is a common and effective method. The principle is to neutralize the heavy metals in the soil, making it difficult for them to react and fuse with other substances. However, some heavy metal soils have high humidity, and the amendments are easily diluted by the moisture in the soil, which seriously affects the efficiency and effect of the remediation of the heavy metal soil. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that moisture in heavy metal soil easily affects the remediation effect, and to propose a heavy metal contaminated wetland soil remediation device and remediation method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A heavy metal contaminated wetland soil remediation device comprises a mounting frame, and also includes: an annular frame mounted on the mounting frame, a tubular collecting hood being rotatably mounted on the annular frame, wherein a tubular screen is fixedly mounted on the inner wall of the tubular collecting hood, and a driving part for driving the tubular collecting hood to rotate is provided on the mounting frame; a nozzle mounted on the inner bottom of the tubular collecting hood, wherein a nozzle facing the lower port of the tubular collecting hood is fixedly mounted on the nozzle; a plurality of circularly distributed arc plates are all arranged in the tubular screen, wherein a plug rod is fixedly connected to the outer wall of the arc plate, a rubber membrane is fixedly connected between two adjacent arc plates, and an opening and closing part for driving the plurality of arc plates to indirectly approach and move away from its axis is provided in the tubular screen.

[0007] In order to make the tubular screen rotate continuously, preferably, the driving part includes a driving motor fixedly mounted on a mounting frame, a long rod-shaped gear is fixedly mounted on the output shaft of the driving motor, and a ring gear meshingly connected to the long rod-shaped gear is fixedly mounted on the outer wall of the tubular collecting cover.

[0008] In order to make the arc plate intermittently approach and move away from the inner wall of the tubular screen, further, the opening and closing part includes a cross bar fixedly connected to the outer wall of the arc plate, the cross bar is laterally slidably connected to the outer wall of the tubular screen, the end of the cross bar is fixedly connected to the limit plate, and the limit plate and the outer wall of the tubular screen are elastically connected by a first spring, wherein, the mounting frame is fixedly connected to a connecting frame, the connecting frame is fixedly connected to a column extending into the tubular screen, the outer wall of the column is fixedly connected to a conical block, the inner wall of the arc plate is fixedly connected to a wedge block that fits the conical block, the mounting frame is provided with a reciprocating part that drives the tubular screen to move up and down, and the inner wall of the limit plate is fixedly connected to a knocking rod facing the inner wall of the tubular screen.

[0009] In order to enable the tubular screen to move back and forth up and down, the reciprocating part further includes a reciprocating screw rotatably mounted on a mounting frame, a driven gear fixedly mounted on the lower end of the reciprocating screw, and the driven gear is meshingly connected to a ring gear, wherein a reciprocating slider is threadedly connected to the outer wall of the reciprocating screw, the reciprocating slider is fixedly connected to the ring frame, a sliding column is fixedly connected to the ring frame, and the sliding column is longitudinally slidably connected to the mounting frame.

[0010] In order to facilitate the transportation of clay into the tubular screen, preferably, the top of the arc plate is fixedly connected with a fan-shaped plate inclined toward the axis of the tubular screen, and the upper end of the rubber membrane extends into the gap between two adjacent fan-shaped plates and is fixedly connected to the fan-shaped plates.

[0011] In order to improve the spraying uniformity of the improver, further, the inner wall of the arc plate is fixedly connected to a support, the nozzle is rotatably installed on the support, and a torsion spring is installed between the nozzle and the support, wherein an inner hole is provided at the upper end of the column, and an annular cover is rotatably sleeved on the outer wall of the lower end of the column, and a circular hole extending into the annular cover is provided in the inner hole, and the annular cover is fixedly connected to the arc plate through a bracket, and a hose is fixedly connected to the outer wall of the annular cover, and the end of the hose is wrapped around the outer wall of the nozzle and communicated with the nozzle.

[0012] In order to fully mix the improver and the clay, further, the mounting frame is rotatably connected to a tilted mixing drum, the lower port of the tubular collecting cover is fixedly connected to a trumpet-shaped discharge port, the feed port of the mixing drum is rotatably connected to a bent pipe fixedly connected to the mounting frame, wherein the lower port of the trumpet-shaped discharge port extends into the bent pipe, a passive gear is fixedly installed on the outer wall of the mixing drum, and a driving gear meshing with the passive gear is fixedly installed on the lower end of the long rod-shaped gear.

[0013] In order to prevent clay from clogging and agglomerating, further, the lower end of the column is laterally slidably connected to a frame with a rectangular shape, and the inner wall of the frame is elastically connected to the outer wall of the column by a second spring, wherein a plurality of conducting rods facing the trumpet-shaped discharge port are fixedly installed at the lower end of the frame, and a roller is rotatably installed on the outer wall of the annular cover, and when the annular cover rotates, the roller will indirectly press one side of the frame.

[0014] In order to facilitate the collection of heavy metal wastewater, preferably, an annular collection pool is fixedly connected to the mounting frame, and a sewage pipe extending into the annular collection pool is fixedly connected to the lower end of the tubular collection cover.

[0015] A method for remediating wetland soil contaminated by heavy metals, the operating steps are as follows:

[0016] Step 1: Continuously transport the clay to the inner wall edge of the tubular screen;

[0017] Step 2: rotating the tubular screen while reciprocating up and down;

[0018] Step 3: intermittently move the plurality of arc-shaped plates closer to and farther from the inner wall of the tubular screen;

[0019] Step 4: Spray the liquid improver from the nozzle onto the clay discharged from the tubular screen;

[0020] Step 5: Stir and mix the clay and improver thoroughly.

[0021] Compared with the prior art, the present invention provides a heavy metal contaminated wetland soil remediation device, which has the following beneficial effects:

[0022] 1. The heavy metal contaminated wetland soil remediation equipment drives the tubular collection cover and the tubular screen to rotate through a driving motor. The tubular screen will drive the arc plate to revolve around its axis, and the clay will be affected by centrifugal force, so that part of the moisture in the clay can be thrown out into the tubular collection cover, thereby reducing the moisture content in the clay and improving the efficiency of subsequent improvers for clay remediation.

[0023] 2. The heavy metal contaminated wetland soil remediation equipment sprays the liquid improver onto the dried clay through a nozzle. Since the clay will be continuously discharged from the lower port of the tubular screen, the improver can be evenly and fully sprayed onto the clay, so that the clay can be efficiently and fully repaired by the improver.

[0024] 3. The heavy metal contaminated wetland soil remediation equipment drives the reciprocating screw to rotate through the driven gear, and the annular frame drives the tubular collection cover, the tubular screen and the arc plate to move up and down, so that the clay can slide down along the inner wall of the tubular screen, so that clay can be continuously added to the tubular screen, which indirectly improves the remediation efficiency of heavy metal clay, and the tubular screen is not easily blocked by clay.

[0025] 4. The heavy metal polluted wetland soil remediation equipment drives the wedge block to move upward synchronously through the arc plate. The diameter of the annular groove formed between the arc plate and the tubular screen will be reduced, and the clay between the two will be squeezed and subjected to greater resistance. On the one hand, the clay can stay on the inner wall of the tubular screen for a longer time to ensure the dehydration effect. On the other hand, the agglomerated clay will be crushed, so that the subsequent improver and clay can be better mixed and reacted.

[0026] 5. The heavy metal contaminated wetland soil remediation equipment drives the arc plate to move and reset in the direction away from the tubular screen through the first spring. At this time, the limit plate drives the knocking rod to knock the outer wall of the tubular screen, so that the clay on the inner wall of the tubular screen is not easy to block the mesh. Then the tubular screen moving up and down will cause the arc plate to move back and forth.

[0027] 6. The heavy metal contaminated wetland soil remediation equipment will drive the nozzle and the nozzle to move back and forth through the arc plate, and the nozzle can spray the modifier into the heavy metal clay more evenly to better repair the heavy metal clay.

[0028] 7. When the heavy metal contaminated wetland soil remediation equipment drives the nozzle to move away from the axis of the tubular screen through the arc plate, the hose wrapped around the nozzle at the end will cause the nozzle to rotate, thereby significantly increasing the spraying area of ​​the nozzle, so that the improver can be sprayed more evenly into the heavy metal clay. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the axonometric structure of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0030] Figure 2 This is a partial axonometric structural schematic diagram of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0031] Figure 3 This is a partial front view cutaway structural schematic diagram of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0032] Figure 4 This is a schematic diagram of the axonometric structure of a tubular screen of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0033] Figure 5This is a schematic diagram of the axonometric structure of a limit plate of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0034] Figure 6 This is a schematic diagram of the axonometric structure of a curved plate of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0035] Figure 7 This is a schematic diagram of the axonometric structure of a column of a heavy metal contaminated wetland soil remediation device proposed by the present invention;

[0036] Figure 8 A heavy metal contaminated wetland soil remediation device proposed by the present invention Figure 3 Schematic diagram of the structure of part A;

[0037] Fig. 9 This is a schematic diagram of the axonometric structure of a nozzle of a heavy metal contaminated wetland soil remediation device proposed in the present invention.

[0038] In the figure: 1, mounting frame; 2, annular frame; 3, tubular collecting cover; 4, tubular screen; 5, sewage pipe; 6, trumpet-shaped discharge port; 7, curved plate; 8, support; 9, nozzle; 10, nozzle; 11, rubber membrane; 12, cross bar; 13, limit plate; 14, first spring; 15, fan-shaped plate; 16, plug rod; 17, knock rod; 18, connecting frame; 19, column; 20, cone block; 21, wedge block; 2 2. Ring gear; 23. Drive motor; 24. Long rod gear; 25. Guide rod; 26. Reciprocating screw; 27. Reciprocating slider; 28. Sliding column; 29. ​​Inner hole; 30. Ring cover; 31. Round hole; 32. Hose; 33. Frame; 34. Second spring; 35. Roller; 36. Driven gear; 37. Mixing drum; 38. Bend pipe; 39. Passive gear; 40. Driving gear; 41. Ring collecting tank. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Embodiment 1:

[0042] Reference Figure 1-Figure 9 A heavy metal contaminated wetland soil remediation device includes a mounting frame 1, and also includes: a ring frame 2 with a circular ring shape, mounted on the mounting frame 1, a tubular collecting cover 3 is rotatably mounted on the ring frame 2, and the tubular collecting cover 3 is used to collect sewage discharged from clay, wherein a tubular screen 4 is fixedly mounted on the inner wall of the tubular collecting cover 3, and the inner wall of the tubular screen 4 is provided with mesh holes, and a driving part for driving the tubular collecting cover 3 to rotate is provided on the mounting frame 1; a nozzle 9 is mounted on the inner bottom of the tubular collecting cover 3, wherein a nozzle 9 is fixedly mounted on the nozzle 9. 3. A nozzle 10 at the lower port is used to spray the liquid improver into the clay; a plurality of circular arc plates 7 are arranged in the tubular screen 4, the number of the arc plates 7 is 4-8, and the preferred number of the present application is 6, wherein the outer wall of the arc plate 7 is fixedly connected with a plug rod 16, and a rubber membrane 11 is fixedly connected between two adjacent arc plates 7, the rubber membrane 11 is elastic, and the rubber membrane 11 makes the plurality of arc plates 7 surround a pipe fitting, and the tubular screen 4 is provided with an opening and closing portion for driving the plurality of arc plates 7 to indirectly approach and move away from its axis.

[0043] When in use, the whole device is started, and the soil is continuously poured into the inner wall of the edge of the tubular screen 4, that is, the annular groove formed by the tubular screen 4 and the arc plate 7. At this time, the driving part rotates the tubular collecting cover 3, and the tubular collecting cover 3 drives the tubular screen 4 on the inner wall to rotate, and the tubular screen 4 drives the arc plate 7 to revolve around its axis. When the clay fits the inner wall of the tubular screen 4, the clay will be subjected to the centrifugal force, so that part of the water in the clay can be thrown out into the tubular collecting cover 3, which can reduce the water content in the clay and improve the efficiency of the subsequent repair of the clay by the improver; at the lower port of the tubular screen 4, the nozzle 9 can spray the liquid improver onto the dried clay through the nozzle 10. Since the clay will be continuously discharged from the lower port of the tubular screen 4, the improver can be evenly and fully sprayed onto the clay, so that the clay can be efficiently and fully repaired by the improver.

[0044] During this period, the opening and closing part will drive the arc plate 7 to intermittently approach and move away from the inner wall of the tubular screen 4. When the arc plate 7 approaches the inner wall of the tubular screen 4, the diameter of the annular groove formed between the arc plate 7 and the tubular screen 4 will be reduced, and the clay between the two will be squeezed and subjected to greater resistance. On the one hand, the clay can stay on the inner wall of the tubular screen 4 for a longer time to ensure the dehydration effect. On the other hand, the agglomerated clay will be crushed, so that the subsequent improver and clay can be better mixed and reacted. Among them, the insertion rod 16 on the outer wall of the arc plate 7 can further improve the effect of crushing the clay.

[0045] The driving unit comprises a driving motor 23 fixedly mounted on the mounting frame 1 , a long rod gear 24 fixedly mounted on the output shaft of the driving motor 23 , and a ring gear 22 meshingly connected with the long rod gear 24 fixedly mounted on the outer wall of the tubular collecting cover 3 .

[0046] Specifically, when in use, start the drive motor 23, the drive motor 23 will drive the ring gear 22 to rotate through the long rod gear 24, the ring gear 22 will drive the tubular collecting cover 3 to rotate, the tubular collecting cover 3 will drive the tubular screen 4 on the inner wall to rotate, and the tubular screen 4 will drive the arc plate 7 to revolve around its axis.

[0047] An annular collecting pool 41 is fixedly connected to the mounting frame 1, and a sewage pipe 5 extending into the annular collecting pool 41 is fixedly connected to the lower end of the tubular collecting cover 3. When the tubular collecting cover 3 rotates, the sewage will be discharged into the annular collecting pool 41 through the sewage pipe 5, thereby facilitating the collection of heavy metal sewage.

[0048] Embodiment 2:

[0049] Reference Figure 1-Figure 3 as well as Figure 6-Figure 9 , which is basically the same as the first embodiment, and further discloses a specific implementation scheme of the opening and closing part.

[0050] The opening and closing part includes a cross bar 12 fixedly connected to the outer wall of the arc plate 7, the cross bar 12 is laterally slidably connected to the outer wall of the tubular screen 4, the end of the cross bar 12 is fixedly connected to a limit plate 13, the limit plate 13 is located outside the tubular screen 4, and the limit plate 13 is elastically connected to the outer wall of the tubular screen 4 through a first spring 14, wherein the mounting frame 1 is fixedly connected to a connecting frame 18, and the connecting frame 18 is fixedly connected to a column 19 extending into the tubular screen 4, The axis of the column 19 is colinear with the axis of the tubular screen 4, the outer wall of the column 19 is fixedly connected with a conical block 20, the conical surface of the conical block 20 is set downward, the inner wall of the arc plate 7 is fixedly connected with a wedge block 21 that fits with the conical block 20, the inclined surface of the wedge block 21 fits with the inclined surface of the conical block 20, and the mounting frame 1 is provided with a reciprocating part that drives the tubular screen 4 to move up and down, and the inner wall of the limit plate 13 is fixedly connected with a knocking rod 17 facing the inner wall of the tubular screen 4.

[0051] During use, the reciprocating part will drive the tubular collecting cover 3, the tubular screen 4 and the arc plate 7 to move reciprocatingly up and down, so that the clay can slide downward along the inner wall of the tubular screen 4, and the clay will eventually be discharged from the lower port of the tubular screen 4, so that clay can be continuously added to the tubular screen 4, indirectly improving the repair efficiency of heavy metal clay, and the tubular screen 4 is not easily blocked by clay.

[0052] When the curved plate 7 moves upward with the tubular screen 4, the curved plate 7 will also drive the wedge block 21 to move upward synchronously. The wedge block 21 will move away from the axis of the tubular screen 4 under the action of the inclined surface of the conical block 20, so that the curved plate 7 and the plug 16 are close to the inner wall of the tubular screen 4, and the diameter of the annular groove formed between the curved plate 7 and the tubular screen 4 will be reduced. The clay between the two will be squeezed and subjected to greater resistance. On the one hand, the clay can stay on the inner wall of the tubular screen 4 for a longer time to ensure the removal. On the one hand, the agglomerated clay will be crushed, so that the subsequent improver and clay can be better mixed and reacted, wherein the insertion rod 16 on the outer wall of the arc plate 7 can further enhance the effect of crushing the clay; and when the wedge block 21 moves downward and resets, the first spring 14 drives the arc plate 7 to move and reset in the direction away from the tubular screen 4. At this time, the limit plate 13 drives the knocking rod 17 to knock on the outer wall of the tubular screen 4, so that the clay on the inner wall of the tubular screen 4 is not easy to block the mesh, so the tubular screen 4 moving up and down will cause the arc plate 7 to move back and forth.

[0053] The above-mentioned reciprocating part includes a reciprocating screw 26 rotatably mounted on the mounting frame 1, the reciprocating screw 26 is parallel to the tubular screen 4, a driven gear 36 is fixedly mounted on the lower end of the reciprocating screw 26, the driven gear 36 is meshingly connected with the ring gear 22, wherein the outer wall of the reciprocating screw 26 is threadedly connected with a reciprocating slider 27, the reciprocating slider 27 is fixedly connected to the ring frame 2, a slide column 28 is fixedly connected to the ring frame 2, and the slide column 28 is longitudinally slidably connected to the mounting frame 1.

[0054] Specifically, when the ring gear 22 rotates, the ring gear 22 will drive the reciprocating screw 26 to rotate through the driven gear 36, and the reciprocating screw 26 will drive the reciprocating slider 27 to slide up and down, and the reciprocating slider 27 will drive the annular frame 2 to slide up and down, and the annular frame 2 will drive the tubular collecting cover 3, the tubular screen 4 and the arc plate 7 to move up and down, so that the clay can slide downward along the inner wall of the tubular screen 4, and the clay will eventually be discharged from the lower port of the tubular screen 4, so that clay can be continuously added to the tubular screen 4, which indirectly improves the repair efficiency of heavy metal clay, and the tubular screen 4 is not easily blocked by clay.

[0055] A sector plate 15 inclined toward the axial direction of the tubular screen 4 is fixedly connected to the top of the arc plate 7 . The upper end of the rubber membrane 11 extends into the gap between two adjacent sector plates 15 and is fixedly connected to the sector plates 15 .

[0056] Specifically, the sector plate 15 forms a conical guide surface in the upper end of the tubular screen 4 under the action of the rubber membrane 11 , so as to facilitate the transportation of clay into the annular groove formed by the arc plate 7 and the tubular screen 4 .

[0057] Embodiment three:

[0058] Reference Figure 3 , Figure 5 , Figure 7 as well as Fig. 9 , which is basically the same as the second embodiment, and further, a specific implementation scheme for making the nozzle 9 swing is specifically added.

[0059] The inner wall of the arc plate 7 is fixedly connected with a support 8, the nozzle 9 is rotatably mounted on the support 8, and a torsion spring is installed between the nozzle 9 and the support 8. The torsion spring is not shown in the figure and is mainly used to reset the nozzle 9 to its initial state. An inner hole 29 is provided at the upper end of the column 19, and an annular cover 30 is rotatably sleeved on the outer wall of the lower end of the column 19. A circular hole 31 extending into the annular cover 30 is provided in the inner hole 29. The annular cover 30 is fixedly connected to the arc plate 7 through a bracket, and a hose 32 is fixedly connected to the outer wall of the annular cover 30. The end of the hose 32 is wrapped around the outer wall of the nozzle 9 and communicated with the nozzle 9.

[0060] Specifically, when the arc plate 7 moves back and forth, the arc plate 7 will also drive the nozzle 9 and the nozzle 10 to move back and forth, and the nozzle 10 can spray the improver into the heavy metal clay more evenly, so that the heavy metal clay can be better repaired. When the arc plate 7 drives the nozzle 9 to move away from the axis of the tubular screen 4, the hose 32 at the end of the nozzle 9 will cause the nozzle 9 to rotate, and the nozzle 9 will drive the nozzle 10 to swing. When the arc plate 7 drives the nozzle 9 to move in the opposite direction to reset, the torsion spring arc on the support 8 drives the nozzle 9 to reverse, thereby driving the nozzle 10 to swing in the opposite direction. Therefore, the reciprocating nozzle 9 will also drive the nozzle 10 to swing back and forth, which significantly increases the spraying area of ​​the nozzle 10, so that the improver can be sprayed into the heavy metal clay more evenly.

[0061] When it is necessary to transport the improver to the nozzle 9, the liquid improver is transported into the inner hole 29, and the improver enters the annular cover 30 from the circular hole 31 at the bottom of the inner hole 29, and then enters the nozzle 9 through the hose 32 on the outer wall of the annular cover 30. When the arc plate 7 revolves around the axis of the tubular screen 4, the arc plate 7 drives the annular cover 30 to rotate on the outer wall of the column 19 through the connecting rod.

[0062] Embodiment 4:

[0063] Reference Figure 1-Figure 3 , which is basically the same as Example 3, and further discloses a specific implementation scheme of adding mixing and stirring of clay and modifier.

[0064] The above-mentioned mounting frame 1 is rotatably connected to a tilted mixing drum 37, and a mixing blade is fixedly mounted on the inner wall of the mixing drum 37. The discharge port of the mixing drum 37 is tilted downward, and the lower end of the tubular collecting cover 3 is fixedly connected to a trumpet-shaped discharge port 6. The feed port of the mixing drum 37 is rotatably connected to a curved pipe 38 fixedly connected to the mounting frame 1, wherein the lower end of the trumpet-shaped discharge port 6 extends into the curved pipe 38, and a passive gear 39 is fixedly mounted on the outer wall of the mixing drum 37, and a driving gear 40 meshingly connected to the passive gear 39 is fixedly mounted on the lower end of the long rod-shaped gear 24.

[0065] Specifically, when the tubular screen 4 discharges heavy metal clay, the clay will be discharged into the curved pipe 38 along the trumpet-shaped discharge port 6, and then discharged into the mixing drum 37 from the curved pipe 38, and the rotating long rod-shaped gear 24 will drive the driving gear 40 to rotate, and the driving gear 40 will drive the mixing drum 37 to rotate through the passive gear 39, and the clay in the mixing drum 37 will be fully stirred to fully mix the modifier and the clay. Due to the inclined setting of the mixing drum 37, the stirred clay arc is discharged from the lower port of the mixing drum 37.

[0066] Embodiment five:

[0067] Reference Figure 3 , Figure 5-Figure 7 as well as Fig. 9 , which is basically the same as Example 4, and further, a specific implementation plan for preventing clay from clogging is specifically added.

[0068] The lower end of the above-mentioned column 19 is laterally slidably connected to a frame 33 with a rectangular shape, and the inner wall of the frame 33 is elastically connected to the outer wall of the column 19 by a second spring 34, wherein the lower end of the frame 33 is fixedly installed with a plurality of guide rods 25 facing the trumpet-shaped discharge port 6, and the outer wall of the annular cover 30 is rotatably installed with a roller 35, and the axis of the roller 35 is parallel to the annular cover 30. When the annular cover 30 rotates, the roller 35 will indirectly press one side of the frame 33.

[0069] Specifically, when the tubular collecting cover 3 and the tubular screen 4 move up and down, multiple conducting rods 25 will indirectly insert into the trumpet-shaped discharge port 6, on the one hand, to prevent clay from blocking the trumpet-shaped discharge port 6, on the other hand, to break up the clay again, making the clay looser, and thus making it easier for the modifier to repair the clay. When the annular cover 30 rotates, the annular cover 30 will drive the roller 35 to revolve around the axis of the annular cover 30. When the roller 35 presses against one side of the frame 33, the frame 33 will slide laterally away from the roller 35. When the roller 35 passes over one side of the frame 33, the second spring 34 will drive the frame 33 to slide back and forth and reset. Therefore, the continuously revolving roller 35 will drive the frame 33 to slide back and forth laterally, so that the conducting rod 25 can be driven to swing back and forth in the trumpet-shaped discharge port 6, so as to improve the dredging effect and breaking up effect of the conducting rod 25, thereby indirectly improving the repair effect of the clay.

[0070] A method for remediating wetland soil contaminated by heavy metals, the operating steps are as follows:

[0071] Step 1: continuously conveying the clay to the inner wall edge of the tubular screen 4;

[0072] Step 2: rotating the tubular screen 4 while reciprocating up and down;

[0073] Step 3: Make the multiple arc plates 7 intermittently approach and move away from the inner wall of the tubular screen 4;

[0074] Step 4: spraying the liquid improver from the nozzle 10 onto the clay discharged from the tubular screen 4;

[0075] Step 5: Stir and mix the clay and improver thoroughly.

[0076] When the heavy metal contaminated wetland soil remediation equipment is used, the whole device is started, and the soil is continuously poured into the inner wall of the edge of the tubular screen 4, that is, the annular groove formed by the tubular screen 4 and the arc plate 7. At this time, the driving motor 23 will drive the ring gear 22 to rotate through the long rod gear 24, and the ring gear 22 will drive the tubular collection cover 3 to rotate, and the tubular collection cover 3 will drive the tubular screen 4 on the inner wall to rotate, and the tubular screen 4 will drive the arc plate 7 to revolve around its axis. When the clay is attached to the tubular screen 4, the arc plate 7 will rotate around its axis. When the inner wall of the tubular screen 4 is blown away, the clay will be affected by the centrifugal force, so that part of the water in the clay can be thrown out into the tubular collecting cover 3, thereby reducing the water content in the clay, so as to improve the efficiency of the subsequent repair of the clay by the improver; at the lower port of the tubular screen 4, the nozzle 9 can spray the liquid improver onto the dried clay through the nozzle 10. Since the clay will be continuously discharged from the lower port of the tubular screen 4, the improver can be evenly and fully sprayed onto the clay, so that the clay can be efficiently and fully repaired by the improver.

[0077] When the ring gear 22 rotates, the ring gear 22 will drive the reciprocating screw 26 to rotate through the driven gear 36, and the reciprocating screw 26 will drive the reciprocating slider 27 to slide up and down, and the reciprocating slider 27 will drive the annular frame 2 to slide up and down, and the annular frame 2 will drive the tubular collecting cover 3, the tubular screen 4 and the arc plate 7 to move up and down, so that the clay can slide downward along the inner wall of the tubular screen 4, and the clay will eventually be discharged from the lower port of the tubular screen 4, so that clay can be continuously added to the tubular screen 4, which indirectly improves the repair efficiency of heavy metal clay, and the tubular screen 4 is not easily blocked by clay.

[0078] When the curved plate 7 moves upward with the tubular screen 4, the curved plate 7 will also drive the wedge block 21 to move upward synchronously. The wedge block 21 will move away from the axis of the tubular screen 4 under the action of the inclined surface of the conical block 20, so that the curved plate 7 and the plug 16 are close to the inner wall of the tubular screen 4, and the diameter of the annular groove formed between the curved plate 7 and the tubular screen 4 will be reduced. The clay between the two will be squeezed and subjected to greater resistance. On the one hand, the clay can stay on the inner wall of the tubular screen 4 for a longer time to ensure the removal. On the one hand, the agglomerated clay will be crushed, so that the subsequent improver and clay can be better mixed and reacted, wherein the insertion rod 16 on the outer wall of the arc plate 7 can further enhance the effect of crushing the clay; and when the wedge block 21 moves downward and resets, the first spring 14 drives the arc plate 7 to move and reset in the direction away from the tubular screen 4. At this time, the limit plate 13 drives the knocking rod 17 to knock on the outer wall of the tubular screen 4, so that the clay on the inner wall of the tubular screen 4 is not easy to block the mesh, so the tubular screen 4 moving up and down will cause the arc plate 7 to move back and forth.

[0079] When the arc plate 7 moves back and forth, the arc plate 7 will also drive the nozzle 9 and the nozzle 10 to move back and forth, and the nozzle 10 can spray the improver into the heavy metal clay more evenly, so that the heavy metal clay can be better repaired, and when the arc plate 7 drives the nozzle 9 to move away from the axis of the tubular screen 4, the hose 32 at the end of the nozzle 9 will cause the nozzle 9 to rotate, and the nozzle 9 will drive the nozzle 10 to swing, and when the arc plate 7 drives the nozzle 9 to move in the opposite direction to reset, the torsion spring arc on the support 8 drives the nozzle 9 to reverse, thereby driving the nozzle 10 to swing in the opposite direction, so that the reciprocating nozzle 9 will also drive the nozzle 10 to swing back and forth, significantly increasing the spraying area of ​​the nozzle 10, so that the improver can be sprayed into the heavy metal clay more evenly.

[0080] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A heavy metal contaminated wetland soil remediation device, comprising a mounting frame (1), characterized in that: Also includes: An annular frame (2) is mounted on the mounting frame (1), and a tubular collecting cover (3) is rotatably mounted on the annular frame (2). Wherein, a tubular screen (4) is fixedly mounted on the inner wall of the tubular collecting cover (3), and a driving part for driving the tubular collecting cover (3) to rotate is provided on the mounting frame (1); A nozzle (9) is installed at the inner bottom of the tubular collecting hood (3). Wherein, a nozzle (10) is fixedly mounted on the nozzle pipe (9) and faces the lower port of the tubular collecting cover (3); A plurality of circular arc plates (7) are arranged in the tubular screen (4). The outer wall of the arc-shaped plate (7) is fixedly connected with an insertion rod (16), a rubber membrane (11) is fixedly connected between two adjacent arc-shaped plates (7), and an opening and closing portion for driving the plurality of arc-shaped plates (7) to indirectly approach and move away from its axis is provided inside the tubular screen (4).

2. A heavy metal contaminated wetland soil remediation device according to claim 1, characterized in that: The driving unit comprises a driving motor (23) fixedly mounted on a mounting frame (1); a long rod-shaped gear (24) is fixedly mounted on an output shaft of the driving motor (23); and a ring gear (22) meshingly connected to the long rod-shaped gear (24) is fixedly mounted on an outer wall of the tubular collecting cover (3).

3. A heavy metal contaminated wetland soil remediation device according to claim 2, characterized in that: The opening and closing portion comprises a cross bar (12) fixedly connected to the outer wall of the arc-shaped plate (7), the cross bar (12) being laterally slidably connected to the outer wall of the tubular screen (4), the end of the cross bar (12) being fixedly connected to a limit plate (13), the limit plate (13) being elastically connected to the outer wall of the tubular screen (4) via a first spring (14), The mounting frame (1) is fixedly connected to a connecting frame (18), the connecting frame (18) is fixedly connected to a column (19) extending into the tubular screen (4), the outer wall of the column (19) is fixedly connected to a conical block (20), the inner wall of the arc plate (7) is fixedly connected to a wedge block (21) that fits the conical block (20), the mounting frame (1) is provided with a reciprocating portion for driving the tubular screen (4) to move up and down, and the inner wall of the limit plate (13) is fixedly connected to a knocking rod (17) facing the inner wall of the tubular screen (4).

4. A heavy metal contaminated wetland soil remediation device according to claim 3, characterized in that: The reciprocating part comprises a reciprocating screw (26) rotatably mounted on a mounting frame (1), a driven gear (36) being fixedly mounted on the lower end of the reciprocating screw (26), and the driven gear (36) being meshedly connected with a ring gear (22). The outer wall of the reciprocating screw (26) is threadedly connected to a reciprocating slider (27), the reciprocating slider (27) is fixedly connected to the annular frame (2), the annular frame (2) is fixedly connected to a slide column (28), and the slide column (28) is longitudinally slidably connected to the mounting frame (1).

5. The heavy metal contaminated wetland soil remediation equipment according to claim 1 is characterized in that: The top of the arc plate (7) is fixedly connected to a sector plate (15) inclined toward the axial direction of the tubular screen (4), and the upper end of the rubber membrane (11) extends into the gap between two adjacent sector plates (15) and is fixedly connected to the sector plates (15).

6. The heavy metal contaminated wetland soil remediation equipment according to claim 3 is characterized in that: The inner wall of the arc-shaped plate (7) is fixedly connected to a support (8), the nozzle (9) is rotatably mounted on the support (8), and a torsion spring is installed between the nozzle (9) and the support (8). The upper end of the column (19) is provided with an inner hole (29), the outer wall of the lower end of the column (19) is rotatably sleeved with an annular cover (30), the inner hole (29) is provided with a circular hole (31) extending into the annular cover (30), the annular cover (30) is fixedly connected to the arc plate (7) through a bracket, the outer wall of the annular cover (30) is fixedly connected with a hose (32), the end of the hose (32) is wound around the outer wall of the nozzle (9) and is connected to the nozzle (9).

7. The heavy metal contaminated wetland soil remediation equipment according to claim 6, characterized in that: The mounting frame (1) is rotatably connected to a tilted mixing drum (37), the lower end of the tubular collecting cover (3) is fixedly connected to a trumpet-shaped discharge port (6), and the feed port of the mixing drum (37) is rotatably connected to a curved pipe (38) fixedly connected to the mounting frame (1). The lower end of the trumpet-shaped discharge port (6) extends into the curved pipe (38), a passive gear (39) is fixedly mounted on the outer wall of the mixing drum (37), and a driving gear (40) meshingly connected with the passive gear (39) is fixedly mounted on the lower end of the long rod-shaped gear (24).

8. The heavy metal contaminated wetland soil remediation equipment according to claim 7 is characterized in that: The lower end of the column (19) is laterally slidably connected to a frame (33) having a rectangular shape, and the inner wall of the frame (33) is elastically connected to the outer wall of the column (19) via a second spring (34). A plurality of conducting rods (25) facing the trumpet-shaped discharge port (6) are fixedly mounted at the lower end of the frame (33), and a roller (35) is rotatably mounted on the outer wall of the annular cover (30). When the annular cover (30) rotates, the roller (35) indirectly presses one side of the frame (33).

9. The heavy metal contaminated wetland soil remediation equipment according to claim 1, characterized in that: An annular collection pool (41) is fixedly connected to the mounting frame (1), and a sewage discharge pipe (5) extending into the annular collection pool (41) is fixedly connected to the lower end of the tubular collection cover (3).

10. A method for remediating wetland soil contaminated by heavy metals, comprising the device for remediating wetland soil contaminated by heavy metals according to any one of claims 1 to 9, characterized in that: The steps are as follows: Step 1: continuously conveying clay toward the inner wall edge of the tubular screen (4); Step 2: rotating the tubular screen (4) while reciprocating up and down; Step 3: intermittently move the plurality of arc-shaped plates (7) closer to and farther from the inner wall of the tubular screen (4); Step 4: spraying the liquid improver from the nozzle (10) onto the clay discharged from the tubular screen (4); Step 5: Stir and mix the clay and improver thoroughly.

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