Mechanical paving device for subsurface artificial wetland filler and method of using the same

Abstract

The present invention relates to a mechanical paving device for subsurface artificial wetland filler and a method for using the same, and belongs to the field of road paving technology. This device addresses the defects that conventional excavators easily form conical piles when dumping fillers, requiring multiple manual interventions, and that existing equipment lacks vibration and shaping functions. A discharge port is formed by partitioning the inner casing, and a reciprocating screw is used to drive a U-shaped shift plate to shift the filler back and forth to achieve uniform discharge. The device's integrated leveling assembly drives the alternating movement of dual spreading plates through a rotating rod to improve leveling efficiency, and a tamping plate linkage structure is provided to synchronously tamp the filler during the leveling process. The hydraulic chamber adjusts the height of the spreading plate to meet the requirements of different wetland thicknesses, and cooperates with the inclined plate to vibrate off the residual filler. The device realizes the integrated operation of uniform spreading of filler, automatic shaping and tamping, and improves construction efficiency and quality.

Description

Technical Field

[0001] The present invention relates to the technical field of road paving, and in particular to a mechanical paving device for subsurface flow artificial wetland filler and a method for using the same. Background Art

[0002] Using subsurface constructed wetlands for water purification is a common ecological engineering measure in water environment treatment. Subsurface constructed wetlands primarily include vertical and horizontal subsurface wetlands. Filter media serves as the matrix and carrier of subsurface constructed wetlands, supporting the life processes of plants, animals, and microorganisms within them. The successful interception of pollutants by the filter media creates favorable conditions for subsequent plant uptake and is crucial for ensuring effluent quality. Subsurface constructed wetlands utilize different filler grades, typically consisting of a drainage layer, a filter layer, and a cover layer. Therefore, the filler layer is applied layer by layer. Controlling the stability and subsidence resistance of horizontal subsurface wetlands in river channels is particularly critical. Horizontal subsurface wetland projects typically utilize volcanic rock, limestone, and zeolite. High-quality impermeable materials, appropriate filler selection and placement methods, and appropriate vegetation cover are crucial for enhancing wetland stability and subsidence resistance.

[0003] Existing mechanized paving technology still has significant defects:

[0004] 1. The material distribution is not uniform enough. Traditional excavators tend to form cone-shaped accumulations when dumping, which requires multiple manual interventions for subsequent leveling.

[0005] 2. Most existing equipment adopts the "laying-static pressure" step-by-step process, which lacks vibration and shaping functions, resulting in low construction efficiency.

[0006] In view of the above problems, the present invention proposes a mechanical paving device for subsurface flow artificial wetland filler and a method for using the same. Summary of the Invention

[0007] The purpose of the present invention is to solve the shortcomings of the existing filling materials that are not uniform and piled when dumped by excavators and still need to be compacted by vibration rammers after manual leveling, and to propose a mechanical paving device for subsurface artificial wetland filling materials and a method of using the same.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A mechanical paving device for subsurface flow artificial wetland filler, comprising:

[0010] The casing has a partition plate inside, and the partition plate and the bottom of the casing form a first discharge opening;

[0011] Two U-shaped shifting plates are slidably arranged on the side of the partition plate to shift the filler discharged from the first discharge port;

[0012] The reciprocating transmission mechanism includes a reciprocating screw rotatably connected to the partition plate, a lifting seat helically engaged with the reciprocating screw, and a connecting rod connecting the lifting seat and the U-shaped shift plate;

[0013] The driving mechanism includes a driving motor fixed to the top of the casing, and a synchronous wheel provided on the output shaft of the driving motor and the top of the reciprocating screw. The driving motor drives the reciprocating screw to rotate through the synchronous wheel, so that the lifting seat drives the U-shaped paddle to perform reciprocating linear motion to achieve uniform distribution of the filler.

[0014] The side of the partition is provided with an inclined panel, the inclined panel and the partition form an acute angle inclined surface, and the bottom of the inclined panel extends to above the first discharge port to form a guide structure.

[0015] The flattening mechanism comprises a rotating plate that can rotate back and forth, two first pins that slide with the rotating plate, and two spreading plates connected to the first pins respectively. The rotating plate slides with the first pins through the first rectangular groove to drive the two spreading plates to move back and forth alternately.

[0016] The tamping mechanism includes an incomplete bevel gear ring linked to the rotating plate, a second rotating disk driven by the bevel gear, and a tamping plate connected to the second rotating disk. The second rotating disk cooperates with the rectangular frame on the tamping plate through an eccentrically arranged third pin to drive the tamping plate to produce a vertical tamping motion.

[0017] The output shaft of the driving motor drives the reciprocating screw and the rotating rod of the flattening mechanism simultaneously through the synchronous wheel and the synchronous belt.

[0018] As a further improvement of the above technical solution:

[0019] The first rotating disk forms a planar motion pair with the second rectangular slot of the rotating plate through the second pin rod. The first rotating disk is fixedly connected to the bottom end of the rotating rod, and the top end of the rotating rod is coaxially connected to the output shaft of the driving motor.

[0020] The compacting mechanism further comprises:

[0021] A fixed cylinder, fixed to the top of the tamping plate, with a spring inside;

[0022] The sliding rod has a bottom end that is slidably inserted into the fixed cylinder and connected to the spring, and a top end that extends into the housing and forms an impact fit with the bottom surface of the inclined panel;

[0023] When the sliding rod rises, it hits the inclined plate to generate vibration, so that the filler slides toward the first discharge port.

[0024] The bottom of the housing is provided with:

[0025] The roller is rotatably arranged at the rear side of the tamping plate in the direction of travel, and is used for performing secondary compaction on the compacted filler;

[0026] The moving wheels are symmetrically arranged on the front side of the casing through an L-shaped frame.

[0027] Also included is a height adjustment mechanism comprising:

[0028] A hydraulic box equipped with a second piston plate that can be raised and lowered and an adjusting threaded rod;

[0029] A hydraulic chamber is provided inside the movable seat and is connected to the hydraulic box via a connecting hose;

[0030] A first piston plate is fixedly connected to the top end of the first pin rod and slides in a sealed manner in the hydraulic chamber;

[0031] The rotating threaded rod can change the amount of hydraulic oil in the hydraulic cavity to adjust the operating height of the spreader.

[0032] Slide rods are provided on both sides of the rotating plate, and arc grooves are correspondingly provided on the bottom of the housing. The slide rods and the arc grooves form a sliding pair to enhance the rotation stability of the rotating plate.

[0033] The partition is provided with a lifting closing plate, and the closing plate is driven by a screw threadedly connected to the partition to realize the opening and closing control of the first discharge port;

[0034] The incomplete bevel gear ring is fixed to the end of the rotating plate through a support arm, and the bevel gear and the incomplete bevel gear ring are intermittently meshed to drive the second turntable to generate intermittent rotational motion.

[0035] In the present application, a method for using a mechanical paving device for subsurface flow constructed wetland filler comprises the following steps:

[0036] S1. Filling and discharge control: When the filler is loaded into the casing, the inclined plate tilts the zeolite for easy discharge; after the screw drives the closing plate to move up, the filler is discharged through the first discharge port and the second discharge port.

[0037] S2. Movement and filler shifting mechanism: The motor drives the moving wheel and the rolling wheel to move the casing; the driving motor drives the reciprocating screw through the synchronous wheel and the synchronous belt, and drives the U-shaped shifting plate to shift the filler back and forth through the lifting seat and the connecting rod to achieve uniform paving.

[0038] S3. Alternating flattening mechanism: The rotating rod drives the rotating plate to rotate through the second pin rod and the second rectangular slot. The first pin rod and the first rectangular slot cooperate to drive the moving seat to slide alternately, so that the spreading plate alternately flattens the filler to improve efficiency.

[0039] S4. Linkage between compaction and filler vibration: The rotating plate drives the second turntable through the incomplete bevel gear ring and the bevel gear, and the third pin rod cooperates with the rectangular frame to drive the compacting plate to compact the filler; the sliding rod moves upward to hit the inclined plate to shake off the residual filler, the fixed cylinder and the spring provide space, and the roller finally compacts.

[0040] S5. Paving thickness control: Turn the threaded rod to adjust the lifting of the second piston plate, change the amount of hydraulic oil in the hydraulic chamber, and control the lifting of the first pin rod, so as to adjust the paving height of the paving plate to meet the different wetland thickness requirements.

[0041] Beneficial effects: In the present invention, one side of the partition is slidably connected to two U-shaped paddles, one side of the partition is rotatably connected to a reciprocating screw, one side of the partition is slidably connected to a lifting seat threadedly connected to the reciprocating screw, and the lifting seat is rotatably connected to one side of the U-shaped paddle via a connecting rod; the driving motor drives the reciprocating screw to rotate through the synchronous wheel and the synchronous belt, thereby driving the lifting seat to move up and down, and the lifting seat drives the two U-shaped paddles to move back and forth in a straight line through the two connecting rods, and then in the process of discharging filler at the first discharge port, the U-shaped paddle can paddle the discharged filler, so that the discharged filler can be evenly discharged to the wetland, which is convenient for evenly spreading the filler in the later stage;

[0042] In the present invention, a second rectangular groove is provided in the rotating plate, and a second pin is slidably fitted in the second rectangular groove, and the top end of the second pin is fixedly connected to the side of the first rotating disk deviating from the center of the circle, and two first rectangular grooves are provided in the rotating plate, and a first pin is provided in each of the two first rectangular grooves, and the bottom ends of the two first pins are respectively arranged at the bottom ends of the two moving seats; the rotating rod drives the rotating plate to rotate reciprocally through the cooperation of the second pin and the second rectangular groove, and during the reciprocating rotation of the rotating plate, the sliding cooperation between the first pin and the first rectangular groove drives the two moving seats to slide back and forth alternately, and the two spreading plates can alternately spread the laid filler, and the alternating movement of the two spreading plates greatly improves the spreading efficiency and the spreading effect;

[0043] In the present invention, an incomplete bevel gear ring is fixed to one end of the rotating plate, and the bottom end of the sliding rod is fixedly connected to the top of the tamping plate by a spring. The same rectangular frame is fixed to one side of the two sliding rods, and a third pin is slidably fitted in the rectangular frame. The second turntable and the bevel gear are respectively fixed at both ends of the rotating shaft, and the third pin is fixed on the side of the second turntable deviating from the center of the circle; the rotating plate drives the second turntable to rotate reciprocatingly through the cooperation of the incomplete bevel gear ring and the bevel gear, and the second turntable drives the tamping plate to move reciprocatingly up and down through the sliding cooperation of the third pin and the rectangular frame. The tamping plate can tamp the spread filler, and the top end of the sliding rod hits the inclined panel when it moves upward, which can shake the filler on the inclined panel toward the first discharge port, so that the filler can be fully discharged.

[0044] In the present invention, during the process of spreading the filler, the filler can first be evenly spread in the wetland through the material shifting structure, which is convenient for leveling the filler in the later stage. When the material shifting structure is running, the leveling structure and the compacting structure can be driven in sequence, and the filler can be automatically compacted when it is spread flat, without the need to use additional equipment for compaction, thereby greatly improving the filler spreading efficiency and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the three-dimensional structure of a mechanical paving device for subsurface flow constructed wetland filler provided in Example 1 of the present invention;

[0046] Figure 2 A schematic diagram of the three-dimensional structure of a partition plate, a U-shaped paddle plate, and a connecting rod of a mechanical spreading device for subsurface flow constructed wetland filler provided in Example 1 of the present invention;

[0047] Figure 3 A schematic diagram of the three-dimensional structure of a mechanical paving device for subsurface flow constructed wetland filler provided in Example 1 of the present invention;

[0048] Figure 4 A schematic three-dimensional cross-sectional view of a mechanical paving device for subsurface flow constructed wetland filler provided in Example 1 of the present invention;

[0049] Figure 5 A schematic diagram of a three-dimensional exploded structure of a movable base, a connecting plate, and a rotating plate of a mechanical spreading device for subsurface flow constructed wetland filler provided in Example 1 of the present invention;

[0050] Figure 6 A schematic diagram of a three-dimensional exploded structure of a sliding rod, a second rotating disk, and an incomplete bevel gear ring of a mechanical spreading device for subsurface flow constructed wetland filler provided in Example 1 of the present invention;

[0051] Figure 7 A schematic diagram of the three-dimensional structure of a mechanical paving device for subsurface flow constructed wetland filler provided in Example 2 of the present invention;

[0052] Figure 8 This is a schematic three-dimensional cross-sectional structure diagram of a movable base and a hydraulic box of a mechanical spreading device for subsurface flow artificial wetland filler provided in Example 2 of the present invention.

[0053] In the figure: 1, casing; 2, partition; 3, first discharge port; 4, reciprocating screw; 5, U-shaped plate; 6, lifting seat; 7, connecting rod; 8, horizontal plate; 9, U-shaped frame; 10, driving motor; 11, synchronous wheel; 12, closing plate; 13, screw; 14, rotating column; 15, rotating plate; 16, first rectangular groove; 17, first pin; 18, moving seat; 19, connecting plate; 20, spreading plate; 21, rotating rod; 22, first rotating disk; 23, second rectangular groove; 24, second pin; 25, sliding rod; 26, arc shaped groove; 27. Incomplete bevel gear ring; 28. Support arm; 29. ​​Base; 30. Rotating shaft; 31. Bevel gear; 32. Second turntable; 33. Limit plate; 34. Tamping plate; 35. Sliding rod; 36. Fixed cylinder; 37. Spring; 38. Rectangular frame; 39. Third pin rod; 40. Second discharge port; 41. L-shaped frame; 42. Moving wheel; 43. Grinding wheel; 44. Inclined plate; 45. Hydraulic chamber; 46. First piston plate; 47. Hydraulic box; 48. Second piston plate; 49. Threaded rod; 50. Connecting hose. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0055] Example 1: Reference Figure 1 and Figure 2 A mechanical spreading device for subsurface artificial wetland filler relates to the technical field of artificial wetland filler. The spreading device includes a casing 1 and a partition 2, a U-shaped shift plate 5, a reciprocating screw rod 4 and a material shifting structure in the casing 1.

[0056] Reference Figure 1 and Figure 2 First, the housing 1 serves as the supporting frame for the entire assembly, with a partition 2 fixed within it. The housing 1 is constructed of 304 stainless steel, 3-5mm thick, and is pickled and passivated after welding. The partition 2 precisely mates with the bottom inner wall of the housing 1, forming a first discharge port 3 specifically for discharging the filler. To ensure even and smooth discharge of the filler, two sliding U-shaped paddles 5 are designed on one side of the partition 2. These paddles act as a paddle during the discharge process, helping to evenly distribute the filler.

[0057] Reference Figure 1 and Figure 2 To achieve the reciprocating linear motion of the U-shaped paddle 5, a reciprocating screw 4 is also provided in the assembly. This screw rotates on one side of the partition 2 and is located above the U-shaped paddle 5. Through the material-paddle mechanism, the reciprocating screw 4 can drive the two U-shaped paddles 5 to reciprocate linearly.

[0058] Reference Figure 1 and Figure 2 The material-selecting structure includes a horizontal plate 8 fixed to the top of the casing 1, and a U-shaped frame 9 is further fixed above the horizontal plate 8. A drive motor 10 is installed on the top of the U-shaped frame 9, and the output shaft of the drive motor 10 can rotate and penetrate the U-shaped frame 9. The bottom end of the output shaft of the drive motor 10 and the top end of the reciprocating screw 4 are both equipped with synchronous pulleys 11, and the two synchronous pulleys 11 are connected by a synchronous belt transmission. This design ensures that the rotation of the drive motor 10 can be accurately transmitted to the reciprocating screw 4. A lifting seat 6 slides on the side of the partition 2 close to the U-shaped selector plate 5. The lifting seat 6 is connected to the reciprocating screw 4 through a spiral groove on the outer wall. The reciprocating screw 4 is made of 45 steel quenched and has a surface hardness of HRC50-55. Two connecting rods 7 are rotatably connected to one side of the lifting seat 6. The bottom ends of these two connecting rods 7 are rotatably connected to the two U-shaped selector plates 5 respectively. The connecting rod 7 is made of 40Cr alloy steel with a tempered hardness of HB280, and the fitting tolerance of the hinge holes at both ends is H7 / h6.

[0059] Specifically, when the drive motor 10 is activated, it drives the reciprocating screw 4 via the synchronous pulley 11 and the timing belt. This rotation of the reciprocating screw 4 further drives the lifting base 6 to move back and forth. The lifting motion of the lifting base 6 is transmitted via the connecting rod 7 to the U-shaped shifter 5, which then moves back and forth. The U-shaped shifter 5 is made of wear-resistant nylon PA66+GF30 (glass fiber reinforced), with a thickness of 5-15mm and an edge chamfer of R2mm. As the filler is discharged from the first discharge port 3, the U-shaped shifter 5 shifts the filler as it moves back and forth. This shifting action ensures uniform and continuous discharge of the filler into the wetland. Subsequent paving work can then be carried out as needed to achieve uniform coverage and finishing of the wetland.

[0060] This paving device can efficiently and evenly discharge filler into the wetland, greatly facilitating subsequent paving work. At the same time, the component has a compact structure, is easy to operate, and has high practicality and operability.

[0061] refer to Figure 4 A mechanical spreading device for subsurface flow constructed wetland filler includes a housing 1 and an inclined plate 44 fixed within the housing 1. The inclined plate 44 is located on the side of the partition 2 away from the U-shaped paddle 5. Two movable seats 18 are slidably connected to the bottom of the housing 1. Spreading plates 20 are located below each movable seat 18 to spread the filler.

[0062] refer to Figure 3-Figure 5To achieve the alternating reciprocating movement of the spreading plate 20, a rotating column 14 is fixed to the bottom of the housing 1, and the bottom end of the rotating column 14 is rotatably connected to the rotating plate 15. A rotating rod 21 rotates through the housing 1 and is used to drive the rotating plate 15 to rotate back and forth. A flattening structure is provided between the rotating plate 15 and the two movable seats 18. The flattening structure includes a first rotating disk 22 fixed to the bottom end of the rotating rod 21. The first rotating disk 22 is located between the housing 1 and the rotating plate 15. The top end of the rotating rod 21 rotates through the cross plate 8 and is fixedly connected to the output shaft of the drive motor 10, thereby driving the rotating rod 21 to rotate. A second rectangular slot 23 is provided in the rotating plate 15. A second pin 24 is slidably engaged in the second rectangular slot 23. The top end of the second pin 24 is fixedly connected to the side of the first rotating disk 22 that is offset from the center. When the rotating rod 21 rotates, the second pin 24 rotates with the first rotating disk 22 and slides within the second rectangular slot 23, thereby driving the rotating plate 15 to rotate back and forth. The rotating plate 15 further includes two symmetrically positioned first rectangular slots 16, each of which includes a first pin 17. The top ends of the two first pins 17 are respectively located at the bottom ends of the two movable seats 18. A connecting plate 19 is fixed to the bottom end of each of the two first pins 17. The bottom ends of the two connecting plates 19 are respectively fixedly connected to the top ends of the two spreading plates 20.

[0063] Specifically, when the rotating plate 15 rotates back and forth, the first pin 17 and the first rectangular slot 16 slide together, driving the two movable seats 18 to slide back and forth alternately, thereby causing the two spreading plates 20 to alternately spread the laid filler. This alternating movement greatly improves the spreading efficiency and effect.

[0064] refer to Figure 3-Figure 6In addition, a tamping plate 34 is provided at the bottom of the casing 1 for tamping the flattened filler. Two sliding rods 35 are provided above the tamping plate 34, and a tamping structure is provided between the rotating plate 15 and the two sliding rods 35. The tamping structure includes an incomplete bevel gear ring 27 fixed to one end of the rotating plate 15 near the tamping plate 34, and two fixed cylinders 36 are fixed on the top of the tamping plate 34. The bottom inner walls of the two fixed cylinders 36 are fixed with springs 37. The springs 37 are made of 65Mn spring steel and have a preload force greater than 150N. The bottom ends of the two sliding rods 35 slide and extend into the corresponding fixed cylinders 36 respectively and are fixedly connected to the top of the corresponding springs 37, thereby providing space for the sliding rods 35. The same rectangular frame 38 is fixed on one side of the two sliding rods 35, and a third pin 39 is slidably fitted in the rectangular frame 38. A base 29 is fixed to the bottom of the housing 1. A rotating shaft 30 rotates through the base 29. A second rotary disc 32 and a bevel gear 31 are fixed to each end of the rotary shaft 30. The bevel gear 31 meshes with the incomplete bevel gear ring 27. When the rotating plate 15 rotates, the incomplete bevel gear ring 27 and the bevel gear 31 cooperate to drive the second rotary disc 32 to reciprocate. A third pin 39 is fixed to the side of the second rotary disc 32 that is offset from the center. When the second rotary disc 32 reciprocates, the third pin 39 slides with the rectangular frame 38, driving the tamping plate 34 to move up and down, thereby compacting the paved filler. The top end of the sliding rod 35 extends into the housing 1 and contacts the bottom of the inclined plate 44. When the sliding rod 35 moves upward, its top end strikes the inclined plate 44, shaking the filler off the inclined plate 44 toward the first discharge port 3, ensuring sufficient discharge.

[0065] refer to Figure 3 and Figure 6 Both sides of the casing 1 are slidably connected with limit plates 33, and the two limit plates 33 are respectively fixed at both ends of the tamping plate 34 to limit the moving direction of the tamping plate 34 so that it can move back and forth stably.

[0066] refer to Figure 5 , support arms 28 are fixed on both sides of the rotating plate 15, and one end of the two support arms 28 is fixedly connected to the incomplete bevel gear ring 27. This structural design enables the incomplete bevel gear ring 27 to be stably supported, ensuring its stability and reliability during operation.

[0067] refer to Figure 3 and Figure 5To further enhance the stability of the rotating plate 15, slide bars 25 are fixed to both sides of the top of the rotating plate 15. The bottom of the housing 1 is provided with two arcuate slots 26. The top ends of the slide bars 25 extend into these slots and are slidably connected thereto. Thus, when the rotating plate 15 rotates, the slide bars 25 slide within the slots 26, providing additional support and stability for the rotating plate 15 and ensuring smooth rotation.

[0068] refer to Figure 4 and Figure 5 The bottom of the housing 1 is also provided with a second discharge port 40, which cooperates with the first discharge port 3 to discharge the filler into the wetland. This double discharge port design can improve the discharge efficiency of the filler and ensure that the filler in the wetland is uniform and sufficient.

[0069] refer to Figure 4 A closure plate 12, used to seal the first discharge port 3, is slidably connected to the side of the partition 2 near the inclined plate 44. A screw 13 is threadedly connected to one side of the partition 2 via a base plate. The bottom end of the screw 13 is rotatably connected to the top of the closure plate 12. Rotating the screw 13 drives the closure plate 12 up and down, thereby controlling the opening and closing of the first discharge port 3 and achieving precise discharge of the filler.

[0070] refer to Figure 3 and Figure 4 The bottom of the housing 1 is also rotatably connected to a roller 43, located on the side of the tamping plate 34 away from the rotating plate 15. The tamping plate 34 is used to initially compact the filler, while the roller 43 further compacts the compacted filler to ensure its density and stability. Two L-shaped frames 41 are fixed to the side of the housing 1 away from the roller 43. A transport wheel 42 is rotatably connected between the two L-shaped frames 41, facilitating the movement and transport of the entire device.

[0071] In summary, the mechanical paving device realizes automatic spreading and compacting of fillers through the cooperation of the leveling structure and the compacting structure, thereby improving construction efficiency and quality.

[0072] Example 2: Reference Figure 7 and Figure 8, an improvement based on Example 1: a hydraulic box 47 is also fixed to one side of the casing 1, and a second piston plate 48 is sealed and slidably connected in the hydraulic box 47. The top of the second piston plate 48 is rotatably connected to a threaded rod 49, and the top thread of the threaded rod 49 passes through the top inner wall of the hydraulic box 47. By rotating the threaded rod 49, the second piston plate 48 can be driven to move up and down in the hydraulic box 47, thereby changing the amount of hydraulic oil in the hydraulic box 47. A hydraulic chamber 45 is provided in each of the two movable seats 18, and a first piston plate 46 is sealed and slidably connected in the hydraulic chamber 45. The top ends of the two first pin rods 17 slide and extend into the corresponding hydraulic chamber 45 respectively, and are fixedly connected to the bottom of the corresponding first piston plate 46. In this way, when the amount of hydraulic oil in the hydraulic chamber 45 changes, it will drive the first piston plate 46 to move up and down, thereby driving the first pin rod 17 and the spreader plate 20 to move up and down.

[0073] refer to Figure 7 and Figure 8 A connecting hose 50 is fixedly connected to one side of each movable seat 18. The location where the connecting hose 50 connects to the movable seat 18 is located above the first piston plate 46. The top ends of the two connecting hoses 50 are fixedly connected to the bottom of the hydraulic tank 47. In this way, the hydraulic oil in the hydraulic tank 47 can flow into or out of the hydraulic chamber 45 through the connecting hose 50, thereby controlling the amount of hydraulic oil in the hydraulic chamber 45.

[0074] Specifically, by rotating the threaded rod 49 to adjust the rise and fall of the second piston plate 48, the amount of hydraulic oil in the hydraulic chamber 45 can be controlled. When the hydraulic oil decreases, the first piston plate 46 is driven upward, thereby driving the first pin 17 and the spreading plate 20 upward; conversely, they are driven downward. By controlling the height of the spreading plate 20, the thickness of the spread filler can be controlled to meet different construction requirements.

[0075] A method for using a mechanical paving device for subsurface flow constructed wetland filler, comprising the following steps:

[0076] S1. The filler is loaded into the housing 1. The inclined plate 44 can tilt the zeolite to one side to facilitate the discharge of the filler in the later stage. When the filler needs to be spread, the closing plate 12 is driven upward by the rotation of the screw 13 to release the blockage of the first discharge port 3, and the filler is discharged downward through the first discharge port 3 and the second discharge port 40;

[0077] S2. Then the motor drives the moving wheel 42 and the grinding wheel 43 to rotate and drive the housing 1 as a whole (the motor is not shown in the figure). Then the driving motor 10 drives the reciprocating screw 4 to rotate through the cooperation of the synchronous wheel 11 and the synchronous belt. The reciprocating screw 4 drives the lifting seat 6 to move up and down. The lifting seat 6 drives the two U-shaped paddles 5 to move back and forth in a straight line through the two connecting rods 7. Then, during the process of discharging the filler at the first discharge port 3, the U-shaped paddles 5 can paddle the discharged filler so that the discharged filler can be evenly discharged to the wetland, which is convenient for evenly spreading the filler in the later stage.

[0078] S3. In addition, when the U-shaped paddle plate 5 moves back and forth, the driving motor 10 also synchronously drives the rotating rod 21 to rotate. The rotating rod 21 drives the rotating plate 15 to rotate back and forth through the cooperation of the second pin 24 and the second rectangular groove 23. During the reciprocating rotation of the rotating plate 15, the sliding cooperation of the first pin 17 and the first rectangular groove 16 drives the two moving seats 18 to slide back and forth alternately. The two spreading plates 20 can alternately spread the laid filler, and the alternating movement of the two spreading plates 20 greatly improves the spreading efficiency and the spreading effect.

[0079] S4. In addition, when the rotating plate 15 rotates back and forth, the rotating plate 15 drives the second rotating disk 32 to rotate back and forth through the cooperation of the incomplete bevel gear ring 27 and the bevel gear 31. The second rotating disk 32 drives the tamping plate 34 to move back and forth through the sliding cooperation of the third pin 39 and the rectangular frame 38. The tamping plate 34 can tamp the paved filler, and when the sliding rod 35 moves upward, the top end hits the inclined plate 44, which can shake the filler on the inclined plate 44 toward the first discharge port 3, so that the filler can be fully discharged. In addition, the cooperation of the fixed cylinder 36 and the spring 37 can provide space for the sliding rod 35 when the sliding rod 35 drives the tamping plate 34 to tamp the filler, and after the tamping plate 34 tamps the filler, the rolling wheel 43 can further compact the filler.

[0080] S5. In addition, the thickness of the fillers laid in the vertical subsurface wetland and the horizontal subsurface wetland is different. Therefore, in order to control the thickness of the fillers spread by the spreading plate 20, the second piston plate 48 is adjusted to rise and fall by rotating the threaded rod 49, thereby controlling the amount of hydraulic oil in the hydraulic chamber 45, thereby controlling the rise and fall of the first pin rod 17, and thus controlling the height of the spreading plate 20.

[0081] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 10 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0082] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A mechanical spreading device for subsurface flow artificial wetland filler, comprising a housing (1) with a partition (2) provided therein, wherein the partition (2) and the bottom of the housing (1) form a first discharge opening (3); two U-shaped paddles (5) slidably arranged on the side of the partition (2) for paddle-moving the filler discharged from the first discharge opening (3), characterized in that: Also includes: A reciprocating transmission mechanism comprises a reciprocating screw (4) rotatably connected to the partition (2), a lifting seat (6) spirally engaged with the reciprocating screw (4), and a connecting rod (7) connecting the lifting seat (6) and the U-shaped shift plate (5); The driving mechanism comprises a driving motor (10) fixed to the top of the housing (1), and a synchronous wheel (11) provided at the output shaft of the driving motor (10) and the top of the reciprocating screw (4), wherein the driving motor (10) drives the reciprocating screw (4) to rotate via the synchronous wheel (11), so that the lifting seat (6) drives the U-shaped paddle (5) to perform reciprocating linear motion to achieve uniform distribution of the filler; The flattening mechanism comprises a rotating plate (15) capable of reciprocating rotation, two first pins (17) slidingly engaged with the rotating plate (15), and two flattening plates (20) respectively connected to the first pins (17), wherein the rotating plate (15) drives the two flattening plates (20) to alternately reciprocate through the sliding engagement of the first rectangular slot (16) and the first pins (17); A tamping mechanism comprises an incomplete bevel gear ring (27) linked to a rotating plate (15), a second rotating disk (32) driven by a bevel gear (31), and a tamping plate (34) connected to the second rotating disk (32), wherein the second rotating disk (32) cooperates with a rectangular frame (38) on the tamping plate (34) via an eccentrically arranged third pin (39), driving the tamping plate (34) to generate a vertical tamping motion; A driving motor (10), whose output shaft simultaneously drives the reciprocating screw (4) and the rotating rod (21) of the flattening mechanism through a synchronous wheel (11) and a synchronous belt; The first rotating disk (22) forms a planar kinematic pair with the second rectangular slot (23) on the rotating plate (15) through the second pin rod (24). The first rotating disk (22) is fixedly connected to the bottom end of the rotating rod (21). The top end of the rotating rod (21) is coaxially connected to the output shaft of the driving motor (10).

2. The mechanical paving device for submerged flow constructed wetland filler according to claim 1, characterized in that: A slanted panel (44) is provided on the side of the partition (2), the slanted panel (44) and the partition (2) form an acute-angled inclined surface, and the bottom of the slanted panel (44) extends to above the first discharge port (3) to form a diversion structure.

3. The mechanical paving device for submerged flow constructed wetland filler according to claim 2, characterized in that: The compacting mechanism further comprises: A fixed cylinder (36) is fixed to the top of the tamping plate (34) and has a spring (37) inside; The sliding rod (35) has a bottom end that is slidably inserted into the fixed cylinder (36) and connected to the spring (37), and a top end that extends into the housing (1) and forms an impact fit with the bottom surface of the inclined panel (44); When the sliding rod (35) rises, it hits the inclined plate (44) to generate vibration, causing the filler to slide toward the first discharge port (3).

4. The mechanical paving device for submerged flow constructed wetland filler according to claim 3, characterized in that: The bottom of the housing (1) is provided with: A rolling wheel (43) is rotatably arranged at the rear side of the tamping plate (34) in the direction of travel, and is used for performing secondary compaction on the tamped filler; The moving wheel (42) is symmetrically arranged on the front side of the casing (1) through the L-shaped frame (41).

5. The mechanical paving device for submerged flow constructed wetland filler according to claim 4, characterized in that: Also included is a height adjustment mechanism comprising: A hydraulic box (47) is provided with a second piston plate (48) that can be raised and lowered and an adjusting threaded rod (49); A hydraulic chamber (45) is provided inside the movable seat (18) and is connected to the hydraulic box (47) via a connecting hose (50); A first piston plate (46) fixedly connected to the top end of the first pin rod (17) and sealingly sliding in the hydraulic chamber (45); The rotating threaded rod (49) can change the amount of hydraulic oil in the hydraulic chamber (45) to adjust the operating height of the spreading plate (20).

6. The mechanical paving device for submerged flow constructed wetland filler according to claim 5, characterized in that: Slide rods (25) are provided on both sides of the rotating plate (15), and arc grooves (26) are correspondingly provided on the bottom of the housing (1). The slide rods (25) and the arc grooves (26) form a sliding pair to enhance the rotation stability of the rotating plate (15).

7. The mechanical paving device for submerged flow constructed wetland filler according to claim 6, characterized in that: The partition (2) is provided with a lifting closing plate (12), and the closing plate (12) is driven by a screw (13) threadedly connected to the partition (2) to realize the opening and closing control of the first discharge port (3); The incomplete bevel gear ring (27) is fixed to the end of the rotating plate (15) via a support arm (28), and the bevel gear (31) forms intermittent meshing with the incomplete bevel gear ring (27) to drive the second rotating disk (32) to generate intermittent rotational motion.

8. A method for using a mechanical paving device for submerged flow constructed wetland filler, applied to the mechanical paving device for submerged flow constructed wetland filler according to claim 7, characterized in that: The following steps are involved: S1. Filler filling and discharge control: When the filler is loaded into the housing (1), the inclined plate (44) tilts the zeolite to facilitate discharge; after the screw (13) drives the closing plate (12) upward, the filler is discharged through the first discharge port (3) and the second discharge port (40); S2, movement and filler shifting mechanism: the motor drives the moving wheel (42) and the grinding wheel (43) to drive the housing (1) to move; the driving motor (10) drives the reciprocating screw (4) through the synchronous wheel (11) and the synchronous belt, and drives the U-shaped shifting plate (5) to shift the filler back and forth through the lifting seat (6) and the connecting rod (7) to achieve uniform paving; S3, alternating flattening mechanism: the rotating rod (21) drives the rotating plate (15) to rotate through the second pin rod (24) and the second rectangular groove (23), and the first pin rod (17) and the first rectangular groove (16) cooperate to drive the moving seat (18) to slide alternately, so that the spreading plate (20) alternately flattens the filler, thereby improving efficiency; S4, compaction and filler vibration linkage: the rotating plate (15) drives the second rotary disc (32) through the incomplete bevel gear ring (27) and the bevel gear (31), and the third pin (39) cooperates with the rectangular frame (38) to drive the compacting plate (34) to compact the filler; the sliding rod (35) moves upward to hit the inclined plate (44) to shake off the residual filler, the fixed cylinder (36) and the spring (37) provide space, and the rolling wheel (43) finally compacts; S5. Paving thickness control: rotating the threaded rod (49) to adjust the second piston plate (48) to rise and fall, changing the amount of hydraulic oil in the hydraulic chamber (45), controlling the rise and fall of the first pin rod (17), thereby adjusting the paving height of the paving plate (20) to meet the requirements of different wetland thicknesses.

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