Landfill leachate drying system

Abstract

The invention discloses a landfill leachate drying system, and relates to the technical field of landfill leachate treatment.The landfill leachate drying system comprises a treatment box, a discharging port is formed in the lower end of the treatment box, the landfill leachate drying system further comprises a material collecting device, the material collecting device comprises a material collecting box, an expansion connector and a lifting assembly, one end of the expansion connector is fixedly connected with the discharging port in a sealed mode, and the other end of the expansion connector is fixedly connected with the lifting assembly; a sealing ring used for being connected with the expansion end of the expansion connector in a sealed mode is arranged on the periphery of the opening of the material collecting box in a surrounding mode, and the lifting assembly drives the sealing ring of the material collecting box to abut against the expansion end of the expansion connector to form sealing. According to the material collecting device, materials can be continuously and efficiently collected, the shutdown frequency caused by material accumulation is reduced, and therefore the overall operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of landfill leachate treatment, and in particular to a landfill leachate drying system. Background Art

[0002] The currently popular full-scale process for leachate membrane concentrate is DTRO+MVR+drying. Since the final dry product of leachate concentrate has high viscosity, and with the increase of pollutant concentration during the concentration process, especially the increase of hardness and sulfate ion, the system is prone to scaling, and continuous reactors are difficult to use. Therefore, the intermittent discharge scraper drying system becomes an option.

[0003] The existing Chinese patent with application number CN202410186196.1 discloses a high-efficiency scraper membrane type garbage leachate, which adopts low-temperature negative pressure membrane drying technology with high evaporation efficiency and low energy consumption.

[0004] Since the above drying technology needs to be carried out in a vacuum environment and the viscosity of the dried product is relatively high, (1) when using a Roots pump to transport the material, the material is easily blocked and cannot be discharged normally; (2) when using an auger to discharge the material, the equipment is easily broken by the vacuum and cannot operate stably; (3) when using the traditional bell-shaped discharge channel for discharge, it is necessary to stop the machine multiple times for discharge, which affects the working efficiency of the equipment. Summary of the invention

[0005] In order to facilitate the collection of dry products, the present application provides a landfill leachate drying system.

[0006] The present application provides a landfill leachate drying system, which adopts the following technical solution: A garbage leachate drying system, wherein the material collection device comprises a material collection box, an expansion joint and a lifting assembly, wherein one end of the expansion joint is sealed and fixedly connected to a material discharge port, and a sealing ring for sealingly connecting to the expansion end of the expansion joint is arranged around the opening of the material collection box, and the lifting assembly drives the sealing ring of the material collection box to press against the expansion end of the expansion joint to form a seal.

[0007] By adopting the above technical solution, the sealing connection between the material collection device and the material outlet of the processing box is realized, so that the material collection box and the processing box can be in a vacuum environment together. A large material collection box is connected through an expansion joint, and the material can be directly discharged into it for collection. This design avoids the problem of difficult discharge caused by material adhesion in the traditional discharge channel. At the same time, the large material collection box can collect more materials and reduce the number of shutdowns.

[0008] Optionally, an aggregate bag and a plurality of barbs for fixing the aggregate bag are provided in the aggregate box, and the plurality of barbs are distributed at intervals along the inner circumference of the aggregate box.

[0009] By adopting the above technical solution, the setting of the aggregate bag is convenient for collecting materials, and the barb is used to fix the aggregate bag to prevent it from shaking or falling off during the aggregate collection process.

[0010] Optionally, the lifting assembly includes a scissor lift table, which is supported at the lower end of the aggregate box.

[0011] By adopting the above technical solution, the scissor lift table can provide a stable lifting function, so that the collection box can be easily connected and separated from the discharge port of the processing box.

[0012] Optionally, the aggregate box includes a buffer bin and a collecting bin, the buffer bin is located above the collecting bin, and the upper and lower ends of the buffer bin are axially connected; the sealing ring of the aggregate box is arranged on the upper end circumferential side of the buffer bin, and the lifting mechanism is used to push the buffer bin and the expansion joint to be sealed and connected; two movable grooves are formed on the side walls of the buffer bin, and sealing plates for sealing the buffer bin are slidably connected in the two movable grooves, and a driving member for controlling the sliding of the sealing plate is also provided in the movable groove; a sliding groove connected to the movable groove is opened on the inner wall of the buffer bin to support the sliding of the sealing plate.

[0013] By adopting the above technical solution, when in use, the upper sealing plate is opened and the lower sealing plate is closed, so that the material can be discharged into the buffer bin. When the buffer bin collects a certain amount of material, the upper sealing plate is closed, so that the upper area is in a vacuum area connected to the processing box, and the material temporarily falls into this area. Then the lower sealing plate is opened to discharge the material into the receiving bin; after the discharge, the lower sealing plate is closed, and the upper sealing section is opened to receive the material. That is, the setting of the buffer bin can temporarily store the material and realize continuous material discharge without stopping the machine.

[0014] Optionally, the sealing plate is provided with a groove on the side facing the expansion joint, and a sealing plate slidably connected to the groove is provided on the sealing plate, and a step groove adapted to the sealing plate is provided on the edge of the slide groove, and a sealing gasket is provided at the bottom of the step groove; a support roller extending perpendicular to the sliding direction of the sealing plate is fixed to the lower end of the sealing plate; the driving member includes a cylinder, the cylinder includes a cylinder body and a piston rod, the cylinder body of the cylinder is fixed in the movable groove, one end of the piston rod extends into the groove, and an axially extending push rod is fixed to the piston rod extending into the groove, and a guide surface is provided at the front end of the push rod for squeezing and pushing the support roller to move upward; a recovery component is also provided between the push rod and the support roller, which is used to drive the sealing plate to be completely retracted into the groove when the push rod is recovered with the piston rod and separated from the support roller.

[0015] By adopting the above technical scheme, the setting of the sealing plate and the supporting roller, and the driving of the cylinder, the sealing quality of the sealing plate can be increased. At the same time, the setting of the recovery component ensures that the sealing plate can be automatically retracted into the groove after the cylinder is recovered, thereby ensuring the sealing of the buffer bin.

[0016] Optionally, one end of the piston rod located in the groove is vertically connected to a linkage rod parallel to the support roller, and a plurality of push rods are provided, and the plurality of push rods are fixed on the linkage rod at equal intervals.

[0017] By adopting the above technical solution and arranging the linkage rod and multiple push rods, the cylinder can simultaneously drive multiple push rods to squeeze the support roller, thereby improving the stability of the blocking plate support.

[0018] Optionally, the recovery component includes a pull-back rope, a guide column is fixed to the bottom of the groove, one end of the pull-back rope is fixedly connected to the top rod, and the other end passes around the circumference of the guide column and is fixedly connected to the blocking plate.

[0019] By adopting the above technical solution and arranging the pull-back rope and the guide column, the top rod can pull the blocking plate into the groove when being recovered, thereby realizing automatic recovery of the blocking plate.

[0020] Optionally, the lower end of the blocking plate is also rotatably connected to a secondary roller parallel to the supporting roller, the two secondary rollers are symmetrically distributed with the supporting roller as the center, a plurality of eccentric cams for supporting the blocking plate are fixed at intervals on the secondary rollers, and the push rod passes through adjacent eccentric cams; a first gear is rotatably connected to the support roller, a tooth groove is provided on the side of the push rod facing the blocking plate, a first rack for meshing with the first gear is fixed in the tooth groove, a second rack meshing with the first gear is slidably connected to the blocking plate, and a second gear meshing with the second rack is fixed on the secondary roller; when the guide surface of the push rod completely lifts the blocking plate, the first rack in the push rod will mesh with the first gear.

[0021] By adopting the above technical solution, the auxiliary roller, eccentric cam, first gear, first rack, second rack and second gear are arranged so that the push rod can automatically engage with the first gear after lifting the sealing plate, and then through the transmission of the first gear and the second rack, the eccentric cams on the two auxiliary rollers are abutted against the grooves, providing a supporting effect for the sealing plate.

[0022] Optionally, the lifting mechanism includes a scissor-type lifting platform and a support frame fixed to the outer peripheral side of the buffer bin, and the bottom of the support frame is supported on the scissor-type lifting platform.

[0023] By adopting the above technical solution and setting of the support frame, the buffer bin can be stably supported on the scissor lift table, thereby ensuring the stability and reliability of the lifting process.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. The material collection device is sealed and connected to the material outlet of the processing box through an expansion joint, and is equipped with a sealing ring and a lifting assembly to ensure the tight connection between the material collection box and the processing box under a vacuum environment. This design not only avoids the problem of material adhesion in the discharge channel, but also enables the large material collection box to collect materials continuously and efficiently, reducing the number of shutdowns caused by material accumulation, thereby improving overall operating efficiency.

[0025] 2. The aggregate box is divided into a buffer bin and a collection bin. The buffer bin is set to realize the temporary storage function of materials. By controlling the opening and closing of the sealing plate, the flow of materials can be flexibly adjusted to achieve continuous unloading without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of Example 1; Figure 2 is a schematic structural diagram of the aggregate box of Example 1; Figure 3 is a schematic diagram of the overall structure of Example 2; Figure 4 is an exploded schematic diagram of Example 2; Figure 5 is a cross-sectional schematic diagram of the buffer bin of Example 2; Figure 6 is a cross-sectional schematic diagram of the sealing plate of Example 2; Figure 7 yes Figure 6 The enlarged schematic diagram of point A in the middle; Figure 8 is a schematic structural diagram of a sealing plate in Embodiment 2; Fig. 9 It is a schematic structural diagram of the blocking plate of Example 2.

[0027] Explanation of the accompanying drawings: 1. Processing box; 2. Collecting box; 3. Expansion joint; 4. Scissor lift; 5. Discharge port; 6. Sealing ring; 7. Collecting bag; 8. Barb; 9. Sealing pad; 10. Buffer bin; 11. Collecting bin; 12. Movable groove; 13. Sealing plate; 14. Slide groove; 15. Groove; 16. Blocking plate; 17. Support roller; 18. Cylinder; 19. Piston rod; 20. Push rod; 21. Linkage rod; 22. Auxiliary roller; 23. Step groove; 24. Eccentric cam; 25. First gear; 26. Second gear; 27. First rack; 28. Second rack; 29. ​​Pull back rope; 30. Guide column; 31. Support frame; 32. Sliding limit groove; 33. Tooth groove; 34. Guide surface. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] Example 1 The present application embodiment discloses a landfill leachate drying system. Figure 1 The landfill leachate concentrate disc membrane drying system comprises a processing box 1 and a collecting device. A discharge port 5 is provided at the lower end of the processing box 1. The collecting device is arranged at the discharge port 5 for receiving the dried material.

[0030] Reference Figure 1 , 2 The material collecting device includes a material collecting box 2, an expansion joint 3 and a lifting assembly. One end of the expansion joint 3 can widen the material discharging port 5. One end of the expansion joint 3 is sealed and fixedly connected with the material discharging port 5 through a flange, bolts and a rubber ring; a sealing ring 6 is arranged around the opening of the material collecting box 2, and the sealing ring 6 can be made of a material with sealing ability such as rubber. The lifting assembly is used to drive the sealing ring 6 of the material collecting box 2 to press against the expansion joint 3 to form a sealed connection.

[0031] The collection box 2 is sealedly connected to the discharge port 5 of the processing box 1 through the expansion joint 3, so that the collection box 2 can work in a vacuum environment together with the processing box 1; at the same time, a larger collection box 2 can be connected through the expansion joint 3, so that more materials can be received at one time, reducing the number of equipment shutdowns.

[0032] A collection bag 7 is provided in the collection box 2 for collecting materials. At the same time, a number of barbs 8 are evenly spaced on the inner circumference of the collection box 2, and the hook ends of the barbs 8 are sharp spikes that can pierce the collection bag 7, so that the collection bag 7 remains in an open state and prevents it from shaking or falling off during the collection process; at the same time, it is convenient to take out the materials.

[0033] The lifting assembly includes a scissor-type lift table 4. The scissor-type lift table 4 is supported at the lower end of the aggregate box 2 to provide a stable lifting function. Specifically, the scissor-type lift table 4 includes two support platforms, a scissor-type lift mechanism arranged between the two support platforms, and a power member that drives the scissor-type lift mechanism to extend and retract. The scissor-type lift mechanism is composed of mutually hinged scissor arms, which are driven by the power member to perform telescopic movement, thereby realizing the lifting and lowering of the support platform. The power member is a hydraulic pump, which controls the extension and retraction of the scissor arms to realize the lifting and lowering of the support platform. The scissor-type lift table 4 is a prior art, so this application will not elaborate on it.

[0034] Example 2 The difference between this embodiment and embodiment 1 lies in the aggregate box 2 and the lifting assembly.

[0035] Reference Figure 3 , 4The material collection box 2 includes a buffer bin 10 and a collection bin 11. The buffer bin 10 is located above the collection bin 11, and the upper and lower ends are axially connected. A sealing ring 6 for sealing connection with the expansion joint 3 is provided on the upper end circumference of the buffer bin 10, that is, the sealing ring 6 of the material collection box 2 is provided on the upper end circumference of the buffer bin 10. The lifting assembly is used to push the buffer bin 10 to be sealed and connected with the expansion joint 3. The buffer bin 10 is used to form a vacuum environment with the processing box 1 and temporarily store materials. The collection bin 11 is below the buffer bin 10. The buffer bin 10 and the collection bin 11 jointly realize non-stop material unloading.

[0036] Reference Figure 5 , 6 The side wall of the buffer bin 10 is spaced apart to form two movable grooves 12 distributed in the upper and lower directions, and the two movable grooves 12 are slidably connected with sealing plates 13 for blocking the buffer bin 10. The movable grooves 12 are also provided with a driving member for controlling the sliding movement of the sealing plates 13. The inner wall of the buffer bin 10 is provided with a sliding groove 14 connected with the movable groove 12, for supporting the sliding movement of the sealing plates 13.

[0037] When in use, first, the sealing ring 6 of the buffer bin 10 is pressed against the expanded end of the expansion joint 3 through the lifting assembly to form a seal. Then, the upper sealing plate 13 is opened and the lower sealing plate 13 is closed to collect materials. After the buffer bin 10 collects a certain amount of material, the upper sealing plate 13 is controlled to close by the driving member to form a vacuum in the upper area and the processing box 1, and then the lower sealing plate 13 is opened to discharge the material into the collection bin 11; after the discharge, the lower sealing plate 13 is closed and the upper sealing plate 13 is opened to achieve a new vacuum buffer between the buffer bin 10 and the processing box 1 for material connection. In this way, continuous material discharge and collection of materials without stopping the processing box 1 is achieved.

[0038] Reference Figure 6 , 7 In order to improve the sealing effect of the sealing plate 13, a groove 15 is provided on the side of the sealing plate 13 facing the expansion joint 3, and a blocking plate 16 that moves upward and downward is slidably connected in the groove 15, and the blocking plate 16 can be completely received in the groove 15. A stepped groove 23 that matches the blocking plate 16 is provided on the edge of the slide groove 14, and a sealing gasket 9 is provided at the bottom of the stepped groove 23. After the sealing plate 13 seals the buffer bin 10, the blocking plate 16 moves upward to be tightly pressed against the sealing gasket 9 of the stepped groove 23, thereby improving the sealing effect of the buffer bin 10.

[0039] Reference Figure 7 , 8The lower end of the sealing plate 13 is fixed with a support roller 17 extending in a direction perpendicular to the sliding direction of the sealing plate 13. The driving member includes a cylinder 18, and the cylinder 18 includes a cylinder body and a piston rod 19. The cylinder body of the cylinder 18 is fixed in the movable groove 12, and one end of the piston rod 19 extends into the groove 15, and the end of the piston rod 19 extending into the groove 15 is fixedly connected with an axially extending push rod 20. The front end of the push rod 20 is provided with a guide surface 34 for squeezing and pushing the support roller 17 to move upward.

[0040] When the sealing plate 13 is in the movable groove 12, the blocking plate 16 on the sealing plate 13 is limited by the movable groove 12 and cannot be extended. At this time, the piston rod 19 of the cylinder 18 moves, which will only push the sealing plate 13 to move toward the slide groove 14; when the sealing plate 13 moves to the sealing position, the blocking plate 16 is opposite to the position of the step groove 23. At this time, there is no restriction from the movable groove 12. When the push rod 20 continues to extend forward with the piston rod 19, the inclined guide surface 34 will squeeze and slide the support roller 17, so that the support roller 17 pushes the blocking plate 16 to move toward the step groove 23 and resist against the sealing gasket 9 in the step groove 23, thereby increasing the sealing effect of the sealing plate 13.

[0041] Reference Figure 7 , 8 Furthermore, one end of the piston rod 19 located in the groove 15 is vertically connected to a linkage rod 21 parallel to the support roller 17, and a plurality of push rods 20 are provided, and the plurality of push rods 20 are fixed on the linkage rod 21 at equal intervals. In this way, the cylinder 18 can simultaneously drive the plurality of push rods 20 to squeeze the support roller 17, thereby improving the stability of the support of the blocking plate 16.

[0042] Reference Figure 7 , 8 The lower end of the blocking plate 16 is also rotatably connected to a secondary roller 22 parallel to the support roller 17, and the two secondary rollers 22 are symmetrically distributed with the support roller 17 as the center. A plurality of eccentric cams 24 for supporting the blocking plate 16 are fixed at intervals on the secondary roller 22, and the push rod 20 passes between adjacent eccentric cams 24, and the push rod 20 never contacts the secondary roller 22. When the farthest end of the eccentric cam 24 contacts the bottom of the groove 15, the eccentric cam 24 and the support roller 17 together press the blocking plate 16 against the stepped groove 23, thereby increasing the support stability of the blocking plate 16.

[0043] Reference Figure 7 , 9The first gear 25 is rotatably connected to the support roller 17. A tooth groove 33 extending along the length direction of the push rod 20 is provided on the side of the push rod 20 facing the blocking plate 16. The tooth groove 33 runs through the upper and lower end surfaces of the push rod 20. A first rack 27 for meshing with the first gear 25 is fixed in the tooth groove 33. When the guide surface 34 of the push rod 20 contacts the support roller 17, the first gear 25 will enter the tooth groove 33 and will not contact the first rack 27. After the guide surface 34 completely lifts the push rod 20, the first gear 25 meshes with the first rack 27 in the tooth groove 33. The blocking plate 16 is provided with a sliding limit groove 32 extending in a direction perpendicular to the support roller 17. A second rack 28 meshing with the first gear 25 is slidably connected in the sliding limit groove 32. A second gear 26 that is always meshed with the second rack 28 is fixed on the auxiliary roller 22.

[0044] When the guide surface 34 of the push rod 20 completely lifts the sealing plate 16, the first rack 27 in the push rod 20 will mesh with the first gear 25, and then the second rack 28 will move through the transmission of the first gear 25, so that the second gear 26 drives the two auxiliary rollers 22 to rotate at the same time, so that the farthest ends of the eccentric cams 24 on the two auxiliary rollers 22 turn to the position against the bottom of the groove 15, providing a supporting effect for the sealing plate 16.

[0045] Reference Figure 7 , 8 A recovery component is also provided between the push rod 20 and the support roller 17. The recovery component is used to drive the sealing plate 16 to be completely retracted into the groove 15 after the push rod 20 is recovered with the piston rod 19 and separated from the support roller 17.

[0046] The recovery assembly includes a pull-back rope 29 and a guide post 30. The guide post 30 is fixed to the bottom of the groove 15 and is located directly below the support roller 17. One end of the pull-back rope 29 is fixedly connected to the push rod 20, and the other end is fixedly connected to the blocking plate 16 by passing around the circumference of the guide post 30. In this embodiment, two groups of pull-back ropes 29 are provided, which are convenient for being arranged near both sides of the groove 15 and connected to the push rod 20 at the end of the linkage rod 21. When the piston rod 19 of the cylinder 18 is recovered, the pull-back rope 29 pulls the blocking plate 16 into the groove 15.

[0047] Reference Figure 3 , 4 The lifting assembly includes a scissor lift table 4 and a support frame 31. The support frame 31 is fixed to the outer peripheral side of the buffer bin 10, and the bottom is supported on the scissor lift table 4 to ensure that the buffer bin 10 can be stably lifted and lowered. In other embodiments, the bottom of the support frame 31 and the scissor lift table 4 can be fixed and limited by bolts or plug-in methods to improve the stability between the support frame 31 and the scissor lift table 4.

[0048] The implementation principle of Example 2 is: During operation, the sealing plate 13 at the upper end of the buffer bin 10 is first opened, while the sealing plate 13 and the blocking plate 16 at the lower end are ensured to be in a closed state, so that the material can smoothly enter the buffer bin 10. When the material in the buffer bin 10 accumulates to a certain amount, the sealing plate 13 at the upper end is closed, and at this time, the upper end area is connected to the processing box 1 and a vacuum environment is formed, and the material temporarily stays in this area.

[0049] Then, the sealing plate 13 at the lower end can be opened to discharge the materials in the buffer bin 10 smoothly into the receiving bin. After the materials are discharged, the sealing plate 13 at the lower end is closed again to ensure the sealing of the system. Then, the sealing plate 13 at the upper end is reopened, and the buffer bin 10 can continue to receive the materials from the processing box 1, thereby realizing a continuous unloading process without interrupting the operation of the equipment.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A landfill leachate drying system, comprising a treatment box (1), wherein a discharge port (5) is provided at the lower end of the treatment box (1), and wherein: It also includes a material collection device, which includes a material collection box (2), an expansion joint (3) and a lifting assembly, one end of the expansion joint (3) is sealed and fixedly connected to the discharge port (5), a sealing ring (6) for sealingly connecting to the expanded end of the expansion joint (3) is arranged around the opening of the material collection box (2), and the lifting assembly drives the sealing ring (6) of the material collection box (2) to press against the expanded end of the expansion joint (3) to form a seal.

2. A landfill leachate drying system according to claim 1, characterized in that: An aggregate bag (7) and a plurality of barbs (8) for fixing the aggregate bag (7) are provided in the aggregate box (2); the plurality of barbs (8) are distributed at intervals along the inner circumference of the aggregate box (2).

3. The landfill leachate drying system according to claim 1, characterized in that: The lifting assembly comprises a scissor-type lifting platform (4), and the scissor-type lifting platform (4) is supported at the lower end of the aggregate box (2).

4. The landfill leachate drying system according to claim 1, characterized in that: The material collection box (2) comprises a buffer bin (10) and a collection bin (11), wherein the buffer bin (10) is located above the collection bin (11), and the upper and lower ends of the buffer bin (10) are axially connected; the sealing ring (6) of the material collection box (2) is arranged on the upper end circumferential side of the buffer bin (10), and the lifting mechanism is used to push the buffer bin (10) and the expansion joint (3) to be sealed and connected; two movable grooves (12) are formed at intervals on the side wall of the buffer bin (10), and sealing plates (13) for sealing the buffer bin (10) are slidably connected in the two movable grooves (12), and a driving member for controlling the sliding of the sealing plate (13) is also provided in the movable groove (12); the inner wall of the buffer bin (10) is provided with a sliding groove (14) connected to the movable groove (12) and used to support the sliding of the sealing plate (13).

5. The landfill leachate drying system according to claim 4, characterized in that: The sealing plate (13) is provided with a groove (15) on one side facing the expansion joint (3); the sealing plate (13) is provided with a blocking plate (16) slidably connected to the groove (15); the edge of the slide groove (14) is provided with a stepped groove (23) adapted to the blocking plate (16); a sealing gasket (9) is provided at the bottom of the stepped groove (23); a supporting roller (17) extending in a direction perpendicular to the sliding direction of the sealing plate (13) is fixed to the lower end of the blocking plate (16); the driving member comprises a cylinder (18), the cylinder (18) comprises a cylinder body and a piston rod (19), the cylinder (18) comprises a cylinder body and a piston rod (19); The cylinder body of the cylinder (18) is fixed in the movable groove (12), one end of the piston rod (19) extends into the groove (15), and an axially extending push rod (20) is fixed to the piston rod (19) extending into the groove (15), and a guide surface (34) for squeezing and pushing the support roller (17) to move upward is provided at the front end of the push rod (20); and a recovery component for driving the blocking plate (16) to be completely retracted into the groove (15) is also provided between the push rod (20) and the support roller (17) when the push rod (20) is recovered with the piston rod (19) and separated from the support roller (17).

6. A landfill leachate drying system according to claim 5, characterized in that: One end of the piston rod (19) located in the groove (15) is vertically connected to a linkage rod (21) parallel to the support roller (17), and a plurality of push rods (20) are provided, and the plurality of push rods (20) are fixed on the linkage rod (21) at equal intervals.

7. A landfill leachate drying system according to claim 6, characterized in that: The recovery assembly comprises a pull-back rope (29), a guide column (30) is fixed to the bottom of the groove (15), one end of the pull-back rope (29) is fixedly connected to the top rod (20), and the other end passes around the circumference of the guide column (30) and is fixedly connected to the blocking plate (16).

8. The landfill leachate drying system according to claim 7, characterized in that: The lower end of the blocking plate (16) is also rotatably connected to an auxiliary roller (22) parallel to the support roller (17); the two auxiliary rollers (22) are symmetrically distributed with the support roller (17) as the center; a plurality of eccentric cams (24) for supporting the blocking plate (16) are fixed at intervals on the auxiliary roller (22); the push rod (20) passes between adjacent eccentric cams (24); the support roller (17) is rotatably connected to a first gear (25); the push rod (20) is provided with a side facing the blocking plate (16); A tooth groove (33) is fixed with a first rack (27) for meshing with a first gear (25), the blocking plate (16) is slidably connected with a second rack (28) for meshing with the first gear (25), and the auxiliary roller (22) is fixed with a second gear (26) for meshing with the second rack (28); when the guide surface (34) of the push rod (20) completely lifts the blocking plate (16), the first rack (27) in the push rod (20) will mesh with the first gear (25).

9. The landfill leachate drying system according to claim 4, characterized in that: The lifting mechanism comprises a scissor-type lifting platform (4) and a support frame (31) fixed to the outer peripheral side of the buffer bin (10), and the bottom of the support frame (31) is supported on the scissor-type lifting platform (4).

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