Tidal flow constructed wetland tail water sediment secondary degradation device and use method

Abstract

The invention discloses a tidal flow constructed wetland tail water sediment secondary degradation device and a use method, and belongs to the technical field of tidal flow wetland sediment treatment. Comprising a rigid support and a rotating motor, a rigid supporting plate is supported on the top of the rigid support, and a tail end plate is installed on the rigid supporting plate; a multi-section telescopic mechanism is installed on the rigid supporting plate, the rotating motor is suitable for driving the multi-section telescopic mechanism to stretch out and draw back, and a scraping plate is installed at the output end of the multi-section telescopic mechanism and moves on the rigid supporting plate; the rigid supporting plate is obliquely arranged, and a mounting notch plate is arranged on the side, away from the tail end plate, of the rigid supporting plate. The stirring motor is mounted in the mounting notch plate; a slurry conveying part is mounted at the bottom of the stirring motor, and the stirred slurry is pumped to the surface of the wetland soil layer. According to the invention, through rising tide and falling tide of the tidal flow constructed wetland, a mixture in the tidal flow is stirred or precipitated and is conveyed back to the wetland again, so that secondary full degradation of urban tail water is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of tidal flow wetland sediment treatment, and in particular relates to a tidal flow artificial wetland tailwater sediment secondary degradation device and a use method. Background Art

[0002] For tidal flow artificial wetlands, the two sides of the wetland edge include soil layers and water surface layers. The soil layer underwater is mostly in the shape of an inclined surface, and the soil layer above the water is mostly planted with green plants to consolidate the soil and store water.

[0003] Under the influence of tides, a large part of the tailwater sediments in the wetland are not treated and drift on the water surface with the tidal currents, flowing into or out of the lake, resulting in a large proportion of pollutants on the edge of the lake. At the same time, some wetland soil also flows into the lake with the tidal currents. Over time, the lake bank line moves inward, the lake depth decreases, the wetland vegetation soil is insufficient, and the vitality of the vegetation decreases.

[0004] Therefore, there is a need for a tidal flow artificial wetland tailwater sediment secondary degradation device and a method of use as mentioned in the present invention. Summary of the invention

[0005] The purpose of the present invention is to provide a tidal flow artificial wetland tailwater sediment secondary degradation device and use method, through the tide and ebb of the tidal flow artificial wetland, the mixture in the tidal water flow is precipitated and transported back to the wetland to ensure that the urban tailwater can be fully degraded for the second time, and the water and soil of the wetland are also maintained.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A tidal flow artificial wetland tailwater sediment secondary degradation device, comprising a sediment secondary recovery system, a sediment spreading system and an intelligent sensing system; the sediment secondary recovery system is located on the wetland edge;

[0008] The sediment secondary recovery system comprises a rigid support and a rotating motor, wherein the top of the rigid support is supported by a rigid support plate, a tail end plate is fixedly mounted on the rigid support plate, a support frame is mounted on the side of the tail end plate, and the bottom end of the support frame is fixedly connected to the rigid support plate;

[0009] A multi-section telescopic mechanism is installed on the rigid support plate, the rotary motor is suitable for driving the multi-section telescopic mechanism to extend and retract, and a scraper is installed at the output end of the multi-section telescopic mechanism, and the scraper moves on the rigid support plate;

[0010] The rigid support plate is tilted, and a mounting notch plate is provided on a side away from the tail end plate, and the bottom of the mounting notch plate abuts against the wetland edge line;

[0011] The sediment spreading system comprises a stirring motor, which is installed in a mounting notch plate; a mud conveying member is installed at the bottom of the stirring motor, which is suitable for pumping the stirred mud to the surface of the wetland soil layer.

[0012] In a further technical solution, a dense mesh support net is installed on one side of the tail end plate opposite to the multi-section telescopic mechanism, and the dense mesh support net is fixedly installed on the tail end plate. A steel wire brush is installed at the bottom of the scraper, and the steel wire brush is suitable for fitting on the surface of the rigid support plate.

[0013] In a further technical solution, the mud conveying member includes a mud conveying pipe, a round table frame is installed in the mounting recessed plate, and a mud unloading cavity is opened at the bottom, and the round table frame, the mud unloading cavity and the mounting recessed plate are connected;

[0014] The output end of the stirring motor is upward and is equipped with a cutting blade, and is located in the truncated cone frame; a fixed cylinder is provided in the middle of the mud unloading chamber, and the stirring motor is installed in the fixed cylinder, the fixed cylinder is fixedly connected to the truncated cone frame, and the bottom of the mud unloading chamber is connected to the mud conveying pipe.

[0015] In a further technical solution, the mud conveying component also includes a mud power pump and a rotary mud nozzle. The pump body of the mud power pump is installed with a supporting platform 1, and the supporting platform is fixed on the wetland soil layer. The mud conveying pipe passes through the supporting platform 1, and a rotary mud nozzle is installed on the top. The mud power pump is suitable for pumping the sediment in the installation recessed plate after being stirred by the stirring motor, and pumping it to the rotary mud nozzle for spraying.

[0016] In a further technical solution, a supporting platform 2 is installed on the side of the mounting recess plate away from the rigid support plate. The supporting platform 2 is suitable for being fixed on a wetland soil layer and a motor support is installed on the top, and a rotating motor is fixedly installed on the top of the motor support.

[0017] In a further technical solution, the intelligent sensing system includes a time switch, a water level sensor 1 and a water level sensor 2, the time switch is connected to the water level sensor 1 and the water level sensor 2 by respectively installing wires; the water level sensor 1 is installed on the motor support, and the water level sensor 2 is installed on the mounting notch plate.

[0018] In a further technical solution, the multi-section telescopic mechanism includes a first-order telescopic section, a second-order telescopic section and a third-order telescopic section, and the diameter gradually decreases; a screw is installed at the output end of the rotating motor, and the end of the screw away from the rotating motor extends into the second-order telescopic section and is threadedly connected.

[0019] In a further technical solution, the multi-section telescopic mechanism further includes a four-stage telescopic section, and cable limit blocks are installed in the first-stage telescopic section, the second-stage telescopic section, the third-stage telescopic section and the fourth-stage telescopic section, and pulleys and cables are installed on the second-stage telescopic section and the third-stage telescopic section; the cable limit blocks are fixedly connected to the cables;

[0020] The pulleys are arranged in pairs on the second-order telescopic joint and the third-order telescopic joint respectively; cables are wound around the pulleys;

[0021] A bottom spiral block is provided in the second-stage telescopic joint, and the screw rod is threadedly connected with the bottom spiral block.

[0022] In a further technical solution, a guide groove is provided on the outer side of the second-order expansion joint, a guide column is provided in the first-order expansion joint, the guide column is fixedly connected to the first-order expansion joint, and the guide column is adapted to the guide groove; the third-order expansion joint is fixedly connected to the end of the second-order expansion joint and is located on the end side away from the first-order expansion joint; a sealing plate is installed on the outer end of the first-order expansion joint located on the outer side of the second-order expansion joint.

[0023] A method for using a tidal flow artificial wetland tailwater sediment secondary degradation device comprises the following steps:

[0024] Step S1: Install the sediment secondary recovery system, sediment spreading system and intelligent sensing system at the location around the artificial wetland and fix them;

[0025] Step S2: Connect the time control switch, water level sensor 1, and water level sensor 2, and connect the sensors to the corresponding rotating motor, stirring motor, and mud power pump respectively;

[0026] In other stages of the time-controlled switch, all circuits are not connected; the equipment is stationary and does not work;

[0027] Step S3: When the tide is high, the time-controlled switch controls the single circuit to be turned on during the high tide stage to ensure the operation of the rotary motor; the upper and lower parts of the water level sensor 1 are respectively provided with an extension sensing area and a retraction sensing area; when the tide rises to the extension sensing area, the rotary motor is in forward rotation, the multi-section telescopic mechanism is extended, and the scraper is sent back to the tail end plate;

[0028] Extension action of the multi-section telescopic mechanism: the rotary motor rotates, and the screw rotates through the bottom screw block to push the second-order telescopic section upward; at the same time, since the cable limit block of the first-order telescopic section is fixed to the cable, the fixed limit pulley rotates, driving the cable limit block on the third-order telescopic section to move upward, and the third-order telescopic section moves upward at the same time; similarly, the fourth-order telescopic section also moves upward with the third-order telescopic section;

[0029] Step S4: When the tide is low, the time switch controls all circuits to be connected through the water level sensor 1. When the tide is low, when the water level drops to the retraction sensing area, the rotary motor reverses, the multi-section telescopic mechanism shortens, and the scraper moves. At this time, the steel ball brush is in front to scrape and loosen the sediment on the rigid support plate, and the rear scraper pushes the sediment along with the accumulated water to the mounting notch plate of the rigid support plate;

[0030] The second water level sensor controls the stirring motor to stir the slurry evenly, and then the slurry is pumped back to the artificial wetland through the mud power pump.

[0031] Step S5: The upper and lower parts of the water level sensor are divided into a stirring sensing area, a power pneumatic area and a stop area;

[0032] The water level continues to drop to the stirring induction area. At this time, the excess lake water has overflowed from the overflow hole, the stirring motor starts, and the remaining sediment scraped by the scraper is fully stirred;

[0033] Step S6: the water level continues to drop to the power start area, at which time the stirring motor stops, and the mud power pump starts to pump the sediment in the groove and the mud power pump to the rotating mud nozzle through the mud delivery pipe; the rotating mud nozzle re-sprays the sediment and lake water mixture onto the wetland soil layer for secondary degradation;

[0034] The water level continues to drop to the stop zone, no new sediment enters the installation notch plate, and the stirring motor and mud power pump are stopped.

[0035] Beneficial Effects

[0036] 1) The present invention utilizes the rising and falling characteristics of the tidal flow itself to operate, thereby realizing automatic control of the mud power pump, the rotating motor and the stirring motor through the different position heights of the water level sensor 1 and the water level sensor 2, achieving the conditions for intelligently handling the sediment stirring and recovery problem and realizing process automation.

[0037] 2) Each component can be disassembled, repaired and reused. It is flexible, reliable and practical.

[0038] 3) The present invention can change the size and shape of each component according to the actual landform, has the advantage of being adapted to local conditions, and can be used in artificial wetlands of any shape.

[0039] 4) The present invention operates during the rising and falling tides, thus avoiding the tedious work of using other methods to separate and transport sediments back after they enter the lake water. The equipment and instrument structures are relatively simple and operable. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 It is a schematic diagram of the overall structure of the sediment secondary degradation device of the present invention;

[0042] Figure 2 for Figure 1 A magnified view of part A;

[0043] Figure 3 It is a detailed schematic diagram of the multi-section telescopic mechanism, rigid support plate and scraper part of the present invention;

[0044] Figure 4 It is a schematic diagram of a multi-section telescopic mechanism of the present invention;

[0045] Figure 5 is a schematic diagram of an information processing system of the present invention;

[0046] Figure 6 A cross-sectional view of a multi-section telescopic mechanism according to another embodiment of the present invention.

[0047] In the figure: 1. Rigid bracket; 2. Rigid support plate; 3. Tail end plate; 4. Close mesh support net; 5. Scraper; 6. Steel ball brush; 7. Support frame; 8. Multi-section telescopic mechanism; 9. Rotating motor; 10. Motor support; 11. Stirring motor; 12. Mud conveying pipe; 13. Mud power pump; 14. Rotating mud nozzle; 15. Time control switch; 17. Water level sensor 1; 18. Water level sensor 2; 19. First-order telescopic joint; 20. Second-order telescopic joint; 21. Third-order telescopic joint; 22 , four-step telescopic joint; 23, pulley; 24, cable; 25, cable limit block; 26, screw; 27, overflow hole; 28, bottom spiral block; 29, extension sensing area; 30, retraction sensing area; 31, stirring sensing area; 33, power starting area; 34, stop area; 35, installation notch plate; 36, round table; 37, mud unloading chamber; 38, cutting disc; 39, fixing cylinder; 40, support platform one; 41, support platform two; 42, guide groove; 43, guide column; 44, sealing plate. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0050] Example 1

[0051] See also Figure 1-5 As shown, it is an embodiment of the present invention, which provides a tidal flow artificial wetland tailwater sediment secondary degradation device, including a sediment secondary recovery system, a sediment spreading system and an intelligent sensing system; the sediment secondary recovery system is located on the wetland edge;

[0052] The sediment secondary recovery system comprises a rigid support 1 and a rotating motor 9. The top of the rigid support 1 supports a rigid support plate 2, a tail end plate 3 is fixedly mounted on the rigid support plate 2, a support frame 7 is mounted on the side of the tail end plate 3, and the bottom end of the support frame 7 is fixedly connected to the rigid support plate 2.

[0053] A multi-section telescopic mechanism 8 is installed on the rigid support plate 2, and a rotary motor 9 is suitable for driving the multi-section telescopic mechanism 8 to extend and retract, and a scraper 5 is installed at the output end of the multi-section telescopic mechanism 8, and the scraper 5 moves on the rigid support plate 2;

[0054] The rigid support plate 2 is tilted, and a mounting notch plate 35 is provided on a side away from the tail end plate 3, and the bottom of the mounting notch plate 35 abuts against the wetland edge line;

[0055] The sediment spreading system comprises a stirring motor 11, which is installed in the mounting recess plate 35; a mud conveying member is installed at the bottom of the stirring motor 11, which is suitable for pumping the stirred mud to the surface of the wetland soil layer.

[0056] like Figure 3 As shown, a dense mesh support net 4 is installed on one side of the tail end plate 3 opposite to the multi-section telescopic mechanism, and the dense mesh support net 4 is fixedly installed on the tail end plate 3. A steel wire brush 6 is installed at the bottom of the scraper 5, and the steel wire brush 6 is suitable for fitting on the surface of the rigid support plate 2.

[0057] like Figure 2 As shown, the mud conveying member includes a mud conveying pipe 12, a truncated frame 36 is installed in the mounting notch plate 35, and a mud unloading cavity 37 is opened at the bottom, and the truncated frame 36, the mud unloading cavity 37 and the mounting notch plate 35 are connected;

[0058] The output end of the stirring motor 11 is upward and is equipped with a cutting blade 38, and is located in the truncated cone frame 36; a fixed cylinder 39 is provided in the middle of the mud unloading chamber 37, and the stirring motor 11 is installed in the fixed cylinder 39, the fixed cylinder 39 is fixedly connected to the truncated cone frame 36, and the bottom of the mud unloading chamber 37 is connected to the mud conveying pipe 12.

[0059] The mud conveying part also includes a mud power pump 13 and a rotary mud nozzle 14. The pump body of the mud power pump 13 is installed with a support platform 140, and the support platform 140 is fixed on the wetland soil layer. The mud conveying pipe 12 passes through the support platform 140, and the rotary mud nozzle 14 is installed on the top. The mud power pump 13 is suitable for pumping the sediment stirred by the stirring motor 11 in the installation recessed plate 35, and pumping it to the rotary mud nozzle 14 for spraying. A support platform 2 41 is installed on the side of the installation recessed plate 35 away from the rigid support plate. The support platform 2 41 is suitable for being fixed on the wetland soil layer, and a motor support 10 is installed on the top, and a rotary motor 9 is fixedly installed on the top of the motor support 10.

[0060] The intelligent sensing system includes a time switch 15, a water level sensor 1 17 and a water level sensor 2 18. The time switch 15 is electrically connected to the water level sensor 1 17 and the water level sensor 2 18 by installing wires respectively; the water level sensor 1 17 is installed on the motor support 10, and the water level sensor 2 18 is installed at the installation notch plate 35.

[0061] like Figure 4 As shown, the multi-section telescopic mechanism includes a first-order telescopic section 19, a second-order telescopic section 20 and a third-order telescopic section 21, and the diameter gradually decreases; a screw 26 is installed at the output end of the rotating motor, and the end of the screw 26 away from the rotating motor extends into the second-order telescopic section 20 and is threadedly connected. The multi-section telescopic mechanism also includes a fourth-order telescopic section 22, and a cable limit block 25 is installed in the first-order telescopic section 19, the second-order telescopic section 20, the third-order telescopic section 21 and the fourth-order telescopic section 22, and a pulley 23 and a cable 24 are installed on the second-order telescopic section 20 and the third-order telescopic section 21; the cable limit block 25 is fixedly connected to the cable 24; the pulleys 23 are arranged in pairs on the second-order telescopic section 20 and the third-order telescopic section 21; the cable 24 is wound on the pulley 23; a bottom spiral block 28 is opened in the second-order telescopic section 20, and the screw 26 is threadedly connected to the bottom spiral block 28.

[0062] A method for using a tidal flow artificial wetland tailwater sediment secondary degradation device comprises the following steps:

[0063] Step S1: Install the sediment secondary recovery system, sediment spreading system and intelligent sensing system at the location around the artificial wetland and fix them;

[0064] Step S2: Connect the time-controlled switch 15, the water level sensor 1, and the water level sensor 2, and connect the sensors to the corresponding rotating motor, stirring motor, and mud power pump respectively;

[0065] In other stages of the time-controlled switch 15, all circuits are not connected; the equipment is stationary and does not work;

[0066] Step S3: When the tide is high, the time-controlled switch 15 controls the single circuit to be turned on during the tide stage to ensure the operation of the rotary motor; the upper and lower parts of the water level sensor 17 are respectively provided with an extension sensing area 29 and a retraction sensing area 30; when the tide rises to the extension sensing area 29, the rotary motor 10 is in forward transmission, the multi-section telescopic mechanism is extended, and the scraper is sent back to the tail end plate 3;

[0067] The multi-section telescopic mechanism extends: the rotary motor rotates, the screw 26 rotates through the bottom screw block 28 to push the second-order telescopic section 20 to move upward; at the same time, since the cable limit block 25 of the first-order telescopic section 19 is fixed to the cable 24, the fixed limit pulley rotates, driving the cable limit block 24 on the third-order telescopic section 21 to move upward, and the third-order telescopic section 21 moves upward at the same time; similarly, the fourth-order telescopic section 22 also moves upward with the third-order telescopic section 21;

[0068] Step S4: When the tide is low, the time switch 15 controls all circuits to be connected through the water level sensor 17. When the tide is low, when the water level drops to the retraction sensing area 30, the rotary motor reverses, the multi-section telescopic mechanism shortens, and the scraper moves. At this time, the steel ball brush is in front, and the sediment on the rigid support plate is scraped loose, and the rear scraper pushes the sediment along with the accumulated water to the mounting notch plate 35 of the rigid support plate;

[0069] The stirring motor 11 is controlled by the water level sensor 18 to stir the slurry evenly; the slurry is then sent back to the artificial wetland by the mud power pump 13;

[0070] Step S5: The upper and lower parts of the water level sensor 18 are divided into a stirring sensing area 31, a power pneumatic area 32 and a stop area 34;

[0071] The water level continues to drop to the stirring induction area 31. At this time, the excess lake water has overflowed from the overflow hole 27, and the stirring motor 11 is started, and the remaining sediment scraped by the scraper is fully stirred;

[0072] Step S6: the water level continues to drop to the power start area 33, at which time the stirring motor 11 stops, and the mud power pump 13 starts to deliver the sediment in the groove and the mud power pump 13 to the rotating mud nozzle 14 through the mud delivery pipe 12; the rotating mud nozzle 14 re-sprays the sediment and lake water mixture onto the wetland soil layer for secondary degradation;

[0073] The water level continues to drop to the stop zone 34, and no new sediment enters the installation notch plate 35, and the stirring motor 11 and the mud power pump 13 are both stopped.

[0074] Example 2

[0075] like Figure 6As shown, it is another implementation scheme of the present invention. On the basis of Example 1, a guide groove 42 is provided on the outer side of the step expansion joint 20, and a guide column 43 is provided in the first-step expansion joint 19. The guide column 43 is fixedly connected to the first-step expansion joint 19, and the guide column 43 is adapted to the guide groove 42; the third-step expansion joint 21 is fixedly connected to the end of the second-step expansion joint 20, and is located on the end side away from the first-step expansion joint 19; the first-step expansion joint 19 is located on the outer end of the second-step expansion joint 20 and is installed with a sealing plate 44.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0077] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tidal flow artificial wetland tailwater sediment secondary degradation device, characterized in that: It includes a sediment secondary recovery system, a sediment spreading system and an intelligent sensing system; the sediment secondary recovery system is located on the edge of the wetland; The sediment secondary recovery system comprises a rigid support (1) and a rotating motor (9), wherein the top of the rigid support (1) supports a rigid support plate (2), a tail end plate (3) is fixedly mounted on the rigid support plate (2), a support frame (7) is mounted on the side of the tail end plate (3), and the bottom end of the support frame (7) is fixedly connected to the rigid support plate (2); A multi-section telescopic mechanism (8) is installed on the rigid support plate (2), a rotating motor (9) is suitable for driving the multi-section telescopic mechanism (8) to telescope, and a scraper (5) is installed at the output end of the multi-section telescopic mechanism (8), and the scraper (5) moves on the rigid support plate (2); The rigid support plate (2) is tilted, and a mounting notch plate (35) is provided on a side away from the tail end plate (3), and the bottom of the mounting notch plate (35) abuts against the wetland edge line; The sediment spreading system comprises a stirring motor (11), which is installed in a mounting recessed plate (35); a mud conveying member is installed at the bottom of the stirring motor (11), which is suitable for pumping the stirred mud to the surface of the wetland soil layer.

2. The device for secondary degradation of tailwater sediments of a tidal flow artificial wetland according to claim 1, characterized in that: A dense mesh support net (4) is installed on one side of the tail end plate 3 (3) opposite to the multi-section telescopic mechanism (8), and the dense mesh support net is fixedly installed on the tail end plate 3 (3). A steel ball brush (6) is installed at the bottom of the scraper (5), and the steel ball brush (6) is suitable for fitting on the surface of the rigid support plate (2).

3. The secondary degradation device for tailwater sediment of a tidal flow artificial wetland according to claim 1, characterized in that: The mud conveying member comprises a mud conveying pipe (12), a truncated table frame (36) is installed in the mounting notch plate (35), and a mud discharge cavity (37) is opened at the bottom, and the truncated table frame (36), the mud discharge cavity (37) and the mounting notch plate (35) are connected; The output end of the stirring motor (11) is upward and is equipped with a cutting blade (38), and is located in the truncated cone frame (36); a fixed cylinder (39) is provided in the middle of the mud unloading chamber (37), and the stirring motor (11) is installed in the fixed cylinder (39); the fixed cylinder (39) is fixedly connected to the truncated cone frame (36); and the bottom of the mud unloading chamber (37) is connected to the mud conveying pipe (12).

4. The device for secondary degradation of tailwater sediments in a tidal flow artificial wetland according to claim 3, characterized in that: The mud conveying member also includes a mud power pump (13) and a rotating mud nozzle (14). The pump body of the mud power pump (13) is installed with a supporting platform (40), and the supporting platform is fixed on the wetland soil layer. The mud conveying pipe (12) passes through the supporting platform (40), and a rotating mud nozzle (14) is installed on the top. The mud power pump (13) is suitable for pumping the sediment in the installation notch plate (35) after being stirred by the stirring motor (11), and pumping it to the rotating mud nozzle (14) for spraying.

5. The device for secondary degradation of tailwater sediments in a tidal flow artificial wetland according to claim 4, characterized in that: A second support platform (41) is installed on the side of the mounting notch plate (35) away from the rigid support plate (2). The second support platform (41) is suitable for being fixed on a wetland soil layer and a motor support (10) is installed on the top. A rotating motor (9) is fixedly installed on the top of the motor support (10).

6. The device for secondary degradation of tailwater sediments in a tidal flow artificial wetland according to claim 4, characterized in that: The intelligent sensing system comprises a time-controlled switch (15), a first water level sensor (17) and a second water level sensor (18); the time-controlled switch (15) is electrically connected to the first water level sensor (17) and the second water level sensor (18) by installing wires respectively; the first water level sensor (17) is installed on a motor support (10), and the second water level sensor (18) is installed at a mounting notch plate (35).

7. The device for secondary degradation of tailwater sediments in a tidal flow artificial wetland according to claim 4, characterized in that: The multi-section telescopic mechanism (8) comprises a first-stage telescopic section (19), a second-stage telescopic section (20) and a third-stage telescopic section (21), and the diameters of the two sections gradually decrease; a screw rod (26) is installed at the output end of the rotary motor (9), and one end of the screw rod (26) away from the rotary motor (9) extends into the second-stage telescopic section (20) and is threadedly connected.

8. The device for secondary degradation of tailwater sediments in a tidal flow artificial wetland according to claim 4, characterized in that: The multi-section telescopic mechanism (8) further comprises a four-stage telescopic section (22); a cable limit block (25) is installed in each of the first-stage telescopic section (19), the second-stage telescopic section (20), the third-stage telescopic section (21) and the fourth-stage telescopic section (22); a pulley (23) and a cable (24) are installed on the second-stage telescopic section (20) and the third-stage telescopic section (21); and the cable limit block (25) is fixedly connected to the cable (24); The pulleys (23) are arranged in pairs on the second-order telescopic joint (20) and the third-order telescopic joint (21); cables (24) are wound around the pulleys (23); A bottom spiral block (28) is provided in the second-stage telescopic joint (20), and the screw rod (26) is threadedly connected to the bottom spiral block (28).

9. The device for secondary degradation of tailwater sediments in a tidal flow artificial wetland according to claim 4, characterized in that: A guide groove (42) is arranged on the outside of the second-order telescopic joint (20), and a guide column (43) is arranged inside the first-order telescopic joint (19); the guide column (43) is fixedly connected to the first-order telescopic joint (19), and the guide column (43) is adapted to the guide groove (42); the third-order telescopic joint (21) is fixedly connected to the end of the second-order telescopic joint (20) and is located on the end side away from the first-order telescopic joint (19); and a sealing plate (44) is installed at the end of the first-order telescopic joint (19) located on the outside of the second-order telescopic joint (20).

10. A method for using the tidal flow artificial wetland tailwater sediment secondary degradation device as claimed in claim 8, characterized in that: The following steps are involved: Step S1: Install the sediment secondary recovery system, sediment spreading system and intelligent sensing system at the location around the artificial wetland and fix them; Step S2: Connect the time-controlled switch (15), the water level sensor 1, and the water level sensor 2, and connect the sensors to the corresponding rotating motor, stirring motor, and mud power pump respectively; In other stages of the time-controlled switch (15), all circuits are not connected; the equipment is stationary and does not work; Step S3: When the tide is high, the time-controlled switch (15) controls the single circuit to be turned on during the high tide stage to ensure that the rotating motor (9) works; the upper and lower parts of the water level sensor 1 (17) are respectively provided with an extension sensing area (29) and a retraction sensing area (30); when the tide rises to the extension sensing area (29), the rotating motor (10) is in forward motion, the multi-section telescopic mechanism (8) is extended, and the scraper is sent back to the tail end plate 3 (3); The multi-section telescopic mechanism (8) extends in an elongating motion: the rotary motor (9) rotates, and the screw rod (26) rotates through the bottom screw block (28) to push the second-order telescopic section (20) to move upward; at the same time, since the cable limit block (25) of the first-order telescopic section (19) is fixed to the cable (24), the fixed limit pulley rotates, driving the cable limit block (24) on the third-order telescopic section (21) to move upward, and the third-order telescopic section (21) moves upward at the same time; similarly, the fourth-order telescopic section (22) also moves upward with the third-order telescopic section (21); Step S4: When the tide is low, the time switch (15) controls all circuits to be connected through the water level sensor 1 (17) during the low tide stage; when the water level drops to the retraction sensing area (30) during the low tide, the rotary motor (9) reverses, the multi-section telescopic mechanism (8) shortens, and the scraper (5) is pulled to move; at this time, the steel ball brush (6) is in front, and the sediment on the rigid support plate (2) is scraped loose, and the rear scraper (5) pushes the sediment along with the accumulated water to the mounting notch plate (35) of the rigid support plate (2); The stirring motor (11) is controlled by the second water level sensor (18) to stir the water evenly; and then the water is sent back to the artificial wetland by the mud power pump (13); Step S5: The upper and lower parts of the water level sensor (18) are divided into a stirring sensing area (31), a power pneumatic area (32) and a stop area (34); The water level continues to drop to the stirring induction area (31), at which time the excess lake water has overflowed from the overflow hole (27), the stirring motor (11) is started, and the remaining sediment scraped by the scraper (5) is fully stirred; Step S6: the water level continues to drop to the power start area (33), at which time the stirring motor (11) stops, and the mud power pump (13) starts to deliver the sediment in the groove and the mud power pump (13) to the rotating mud nozzle (14) through the mud delivery pipe (12); the rotating mud nozzle (14) re-sprays the sediment and lake water mixture onto the wetland soil layer for secondary degradation; The water level continues to drop to the stop zone (34), and no new sediment enters the installation notch plate (35), and the stirring motor (11) and the mud power pump (13) are stopped.

Images