Leachate receiving hopper and working method of landfill system

Abstract

The present invention discloses a leachate receiving hopper of a garbage landfill system, comprising a leachate filtering hopper; the leachate filtering hopper comprises a solid-liquid separation box body, a partition is provided in the solid-liquid separation box body, two sides of the partition are respectively provided with a solid residue collection bin and a liquid collection bin, a bottom of the liquid collection bin is provided with a liquid outlet, and the liquid outlet is connected to an external leachate output pipeline; the present invention has a simple structure and can perform a normal filtering process for garbage leachate under normal conditions, thereby eliminating the problem of clogging of the pipeline for conveying garbage leachate.

Description

Technical Field

[0001] The invention belongs to the field of garbage leachate filtration treatment. Background Art

[0002] Due to factors such as the water content of garbage and rain, landfills produce leachate, which requires special pipelines to be transported to leachate treatment equipment for harmless treatment. In addition to liquid, leachate may also contain large particles of residue, debris and solid debris, which can easily cause blockage in the pipelines that transport leachate.

[0003] Therefore, filtration treatment is required before it is introduced into the conveying pipeline. During the filtering process of the garbage leachate, large particles of residue, debris and solid debris that cannot pass through the filter holes in the filter structure will gradually accumulate on the surface of the filter structure, causing blockage and low filtration efficiency over time. Summary of the Invention

[0004] Purpose of the invention: To overcome the deficiencies in the prior art, the present invention provides a leachate receiving hopper and working method for a landfill system, which can scrape and collect large particles of residue, debris and solid debris on the filter structure.

[0005] Technical solution: To achieve the above-mentioned purpose, the leachate receiving hopper of the landfill system of the present invention includes a leachate filtering hopper;

[0006] The leachate filter hopper includes a solid-liquid separation box, which is provided with a partition. The two sides of the partition are respectively a solid residue collection bin and a liquid collection bin. The bottom of the liquid collection bin is provided with a liquid outlet, which is connected to the external leachate output pipe.

[0007] Furthermore, an arc-shaped filter wall is provided on the upper side of the liquid collection bin, the arc-shaped filter wall protrudes toward the liquid collection bin, the clockwise end of the arc-shaped filter wall is fixed to the upper end of the partition, and the arc trend of the arc-shaped filter wall gradually rises in the counterclockwise direction; filter holes are evenly distributed on the arc-shaped filter wall.

[0008] Furthermore, two side plates are fixed on both sides of the upper side of the arc-shaped filter wall; a solid residue scraping block is movably arranged between the two side plates; the outer surface of the solid residue scraping block includes a lower convex arc surface and an upper sliding plane;

[0009] The intersection of the counterclockwise end of the lower convex arc surface and one end of the sliding plane forms a scraping edge, and the scraping edge is slidably matched with the clockwise end of the concave arc surface.

[0010] Furthermore, under normal conditions, the lower convex arc surface blocks the opening above the solid residue collection bin, and the sliding plane, concave arc surface and two side plates together enclose a filter chamber, and the leachate in the filter chamber leaks down into the liquid collection bin through the filter holes on the arc-shaped filter wall.

[0011] Furthermore, a rotating shaft capable of actively rotating is coaxially arranged at the arc axis of the arc-shaped filter wall, and the rotating shaft is fixed to the side of the solid residue scraping block through a swing arm.

[0012] Furthermore, the arc axis of the lower convex arc surface of the solid residue scraping block coincides with the axis of the rotating shaft; the arc radius of the lower convex arc surface of the solid residue scraping block is consistent with the arc radius of the concave arc surface on the upper side of the arc-shaped filter wall.

[0013] Furthermore, the counterclockwise end of the arc-shaped filter wall is fixedly connected to an inclined wall, the upper surface of the inclined wall is an inclined surface, the lower end of the inclined surface is provided with a push shovel body, the push shovel body is provided with a push shovel inclined surface, the lower end of the push shovel inclined surface is a push shovel blade, and the push shovel blade is at the connection between the clockwise end of the concave arc surface and the lower end of the inclined surface;

[0014] It also includes an original leachate leakage outlet, which is located on the upper side of the dozing blade slope.

[0015] Furthermore, a telescopic device is fixed on the inclined surface along the inclined surface direction, and the end of the telescopic rod of the telescopic device is fixedly connected to the tail of the bulldozer body;

[0016] During the counterclockwise rotation of the solid residue scraper block around the axis of the rotating shaft, the lower convex arc surface slides counterclockwise along the arc surface of the concave arc surface, so that the scraping blade performs a scraping action on the concave arc surface in a counterclockwise direction. When the scraping blade moves counterclockwise along the concave arc surface until it coincides with the pushing shovel blade, the sliding plane is just parallel and coplanar with the inclined plane. At the same time, the lower convex arc surface coincides with the concave arc surface, and the opening above the solid residue collection bin is exposed. At this time, the sliding end of the lower part of the sliding plane corresponds to the opening above the solid residue collection bin; then, the extension of the telescopic rod can enable the pushing shovel body to perform a downward pushing movement from the inclined plane to the sliding plane.

[0017] Further: The cleaning and collection process of large particles of residue, debris and solid debris accumulated on the concave arc surface:

[0018] The rotating shaft rotates counterclockwise, causing the solid residue scraping block to rotate counterclockwise around the axis of the rotating shaft, thereby causing the lower convex arc surface and the scraping blade to slide counterclockwise along the arc surface of the concave arc surface. When the scraping blade moves counterclockwise along the concave arc surface until it coincides with the blade of the pushing shovel, the telescopic rod gradually extends. As the telescopic rod continues to extend, under the pushing shovel of the pushing shovel body, the accumulated large-grained residue, fragments and solid debris all slide along the descending direction of the sliding plane into the solid residue collection bin.

[0019] Beneficial effects: The present invention has a simple structure and can filter the landfill leachate normally under normal conditions, thereby eliminating the problem of clogging of the pipeline for transporting the landfill leachate;

[0020] The scraping blade can also perform a gradually upward scraping action on the concave arc surface in a counterclockwise direction, and then the scraping blade can scrape off the large particles of residue, fragments and solid debris accumulated on the concave arc surface in a counterclockwise direction. At the same time, the scraped large particles of residue, fragments and solid debris in the form of accumulation can be collected into the solid residue collection bin, thereby completing the scraping and collection of large particles of debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attachment Figure 1 This is the overall schematic diagram of the normal state of this scheme;

[0022] Attachment Figure 2 For attachment Figure 1 A sectional view of the base;

[0023] Attachment Figure 3 This is a schematic diagram of the scraping blade performing a gradually upward scraping action on the concave arc surface in a counterclockwise direction;

[0024] Attachment Figure 4 Schematic diagram of the scraping work on the concave arc surface when the scraping edge moves counterclockwise along the concave arc surface until it coincides with the push blade;

[0025] Attachment Figure 5 It is a schematic diagram of a bulldozer pushing down the accumulated large particles of debris, fragments and solid debris near the junction of the sliding plane and the inclined plane in the descending direction of the sliding plane;

[0026] Attachment Figure 6 This is a three-dimensional diagram under the normal condition of this scheme. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] As attached Figures 1 to 6 The leachate receiving hopper of the landfill system shown in the figure includes a leachate collecting hopper 1 and a leachate filtering hopper 30. The outlet ends of the leachate from the landfill site correspond to the feed part of the leachate collecting hopper 1. The leachate collecting hopper 1 is used to collect the original leachate. The leachate collecting hopper 1 is provided with a leachate leakage pipe 11 at the lower end of the leachate leakage pipe 11. The lower end of the leachate leakage pipe 11 is the original leachate leakage outlet 10. The original leachate leakage outlet 10 corresponds to the liquid inlet end of the leachate filtering hopper 30. Figure 1 shown.

[0029] The leachate filter hopper 30 includes a solid-liquid separation box 2, a partition 18 is provided in the solid-liquid separation box 2, and the two sides of the partition 18 are respectively a solid residue collection bin 20 and a liquid collection bin 16. The bottom of the liquid collection bin 16 is provided with a liquid outlet 17, and the liquid outlet 17 is connected to the external leachate output pipe; the leachate filter hopper 30 generally plays a filtering role on the original garbage leachate to prevent the leachate output pipe from being blocked.

[0030] An arc-shaped filter wall 15 is provided on the upper side of the liquid collection bin 16. The arc-shaped filter wall 15 protrudes toward the liquid collection bin 16. The clockwise end of the arc-shaped filter wall 15 is fixed to the upper end of the partition 18, and the arc trend of the arc-shaped filter wall 15 gradually rises in the counterclockwise direction; filter holes 9 are evenly distributed on the arc-shaped filter wall 15; the diameter of the filter holes 9 can be set to about 5 mm, and large particles of residue, fragments and solid debris cannot pass through the filter holes 9.

[0031] Two side plates 31 are fixed on both sides of the upper side of the arc-shaped filter wall 15; a solid residue scraping block 22 is movably arranged between the two side plates 31, and a rotating shaft 26 that can actively rotate is coaxially arranged at the arc axis of the arc-shaped filter wall 15. The rotating shaft 26 is fixed to the side of the solid residue scraping block 22 through a swing arm 24; the rotating shaft 26 is driven by a motor 25, and the motor 25 is fixed on the motor bracket 3.

[0032] like Figures 2 to 6 As shown, the specific structure of the solid residue scraping block 22 is as follows: the outer surface of the solid residue scraping block 22 includes a lower convex arc surface 21 and an upper sliding plane 23, so that the outline of the solid residue scraping block 22 is "bow-shaped" from the axial perspective; the arc axis of the lower convex arc surface 21 of the solid residue scraping block 22 coincides with the axis of the rotating shaft 26; the arc radius of the lower convex arc surface 21 of the solid residue scraping block 22 is consistent with the arc radius of the concave arc surface 5 on the upper side of the arc-shaped filter wall 15; the intersection of the counterclockwise end of the lower convex arc surface 21 and one end of the sliding plane 23 forms a scraping blade 27, and the scraping blade 27 slides with the clockwise end of the concave arc surface 5.

[0033] Under normal conditions, the lower convex arc surface 21 blocks the opening above the solid residue collection bin 20, and the sliding plane 23, the concave arc surface 5 and the two side plates 31 together enclose the filter chamber 34. Figure 6 As shown, the garbage leachate in the filter chamber 34 leaks into the liquid collection chamber 16 through the filter holes 9 on the arc-shaped filter wall 15;

[0034] The counterclockwise end of the arc-shaped filter wall 15 is fixedly connected to the inclined wall 13, the upper surface of the inclined wall 13 is an inclined surface 12, the lower end of the inclined surface 12 is provided with a push shovel body 14, and the push shovel inclined surface 4 is provided on the push shovel body 14. The lower end of the push shovel inclined surface 4 is a push shovel blade 8, and the push shovel blade 8 is at the connection between the clockwise end of the concave arc surface 5 and the lower end of the inclined surface 12; the lower end of the leachate leakage pipe 11 is the original leachate leakage outlet 10 on the upper side of the push shovel inclined surface 4.

[0035] A telescopic device 7 is fixed on the inclined surface 12 along the inclined surface direction, and the end of the telescopic rod 6 of the telescopic device 7 is fixedly connected to the tail of the shovel body 14; during the counterclockwise rotation of the solid residue scraping block 22 around the axis of the rotating shaft 26, the lower convex arc surface 21 slides counterclockwise along the arc surface of the concave arc surface 5, so that the scraping edge 27 performs a scraping action on the concave arc surface 5 in the counterclockwise direction, such as Figure 3 As shown, when the scraping edge 27 moves counterclockwise along the concave arc surface 5 until it coincides with the pushing blade 8, as shown in FIG. Figure 4 As shown, the sliding plane 23 is just parallel to and coplanar with the inclined plane 12. At the same time, the lower convex arc surface 21 coincides with the concave arc surface 5, and the opening above the solid residue collection bin 20 is exposed. At this time, the sliding end of the lower part of the sliding plane 23 corresponds to the opening above the solid residue collection bin 20. Subsequently, the extension of the telescopic rod 6 can enable the shovel body 14 to do a downward shoveling movement from the inclined plane 12 to the sliding plane 23, as shown in FIG. Figure 5 shown.

[0036] Detailed working principle: Filtration process under normal conditions:

[0037] In the initial state, the scraping edge 27 slides with the clockwise end of the concave arc surface 5, the lower convex arc surface 21 blocks the opening above the solid residue collection bin 20, and the sliding plane 23, the concave arc surface 5 and the two side plates 31 together enclose the filter chamber 34; Figure 1 、 2 , 6;

[0038] The leachate collecting hopper 1 collects the leachate from the landfill in real time. At the same time, the leachate leakage pipe 11 at the lower end of the leachate collecting hopper 1 leaks the collected leachate through the original leachate leakage port 10 onto the push shovel slope 4 of the push shovel body 14, and flows downward along the push shovel slope 4 into the filter hopper cavity 34. The leachate flowing downward from the push shovel slope 4 into the filter hopper cavity 34 gradually flows downward in the clockwise direction of the concave arc surface 5 under the action of gravity. In the process of gradually flowing downward in the clockwise direction of the concave arc surface 5, the leachate gradually leaks downward through the filter holes 9 evenly distributed on the arc-shaped filter wall 15 into the liquid collection bin 1 6, at the same time, large particles of residue, debris and solid debris in the landfill leachate leaking from the original leachate leakage port 10 cannot pass through the filter holes 9 and are retained on the concave arc surface 5, where they continue to accumulate and, over time, will clog the filter holes 9; at the same time, the filtered landfill leachate entering the liquid collection chamber 16 is discharged to the external leachate output pipe through the liquid outlet 17, thereby avoiding the effect of pipe clogging; at the same time, because the lower convex arc surface 21 blocks the opening above the solid residue collection chamber 20, the unfiltered landfill leachate entering the filter chamber 34 will not flow into the solid residue collection chamber 20;

[0039] The cleaning and collection process of the large particles of residue, debris and solid debris accumulated on the concave arc surface 5:

[0040] After the filtration process has been running for a period of time under normal conditions, a large amount of large particles of residue, debris and solid debris have accumulated on the concave arc surface 5 to be cleaned; at this time, the motor 25 controls the rotating shaft 26 to rotate counterclockwise, so that under the action of the swing arm 24, the solid residue scraping block 22 rotates counterclockwise around the axis of the rotating shaft 26, and then the lower convex arc surface 21 slides counterclockwise along the arc surface of the concave arc surface 5, so that the scraping edge 27 performs a gradually upward scraping action on the concave arc surface 5 in the counterclockwise direction, as shown in FIG. Figure 3 As shown, the large particles of residue, debris and solid debris scraped off by the scraping blade 27 follow the movement under the push of the scraping blade 27, and then the scraping blade 27 scrapes away the large particles of residue, debris and solid debris accumulated on the concave arc surface 5 in a counterclockwise direction. As the scraping blade 27 continues to scrape gradually upward on the concave arc surface 5 in the counterclockwise direction, when the scraping blade 27 moves counterclockwise along the concave arc surface 5 until it coincides with the push blade 8, the scraping work on the surface of the concave arc surface 5 is completed.

[0041] At this time, the sliding plane 23 is just parallel to and coplanar with the inclined surface 12. At the same time, the lower convex arc surface 21 coincides with the concave arc surface 5, and the opening above the solid residue collection bin 20 is exposed. At this time, the sliding end of the lower part of the sliding plane 23 corresponds to the opening above the solid residue collection bin 20. The large particles of residue, debris and solid debris scraped off counterclockwise by the scraping blade 27 in front are accumulated near the connection between the sliding plane 23 and the inclined surface 12, as shown in FIG. Figure 4 As shown;

[0042] Subsequently, the telescopic rod 6 is gradually extended to make the shovel body 14 do a downward shoveling movement from the inclined surface 12 to the sliding plane 23, and the shovel body 14 pushes the large particles of residue, debris and solid debris accumulated near the connection between the sliding plane 23 and the inclined surface 12 downward along the descending direction of the sliding plane 23. Figure 5 Finally, as the telescopic rod 6 continues to extend, under the pushing of the shovel body 14, the accumulated large-particle residues, fragments and solid debris all slide down along the downward direction of the sliding plane 23 into the solid residue collection bin 20, thereby completing the scraping and collection of the large-particle debris.

[0043] Finally, it returns to normal and continues to filter the leachate.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A leachate receiving hopper for a landfill system, characterized by: The leachate filter hopper (30) includes a solid-liquid separation box (2), a partition (18) is provided in the solid-liquid separation box (2), and the two sides of the partition (18) are respectively a solid residue collection bin (20) and a liquid collection bin (16), and an arc-shaped filter wall (15) is provided on the upper side of the liquid collection bin (16); filter holes (9) are evenly distributed on the arc-shaped filter wall (15), and a liquid outlet (17) is provided at the bottom of the liquid collection bin (16), and the liquid outlet (17) is connected to an external leachate output pipe; The arc-shaped filter wall (15) protrudes toward the liquid collection chamber (16), the clockwise end of the arc-shaped filter wall (15) is fixed to the upper end of the partition (18), and the arc trend of the arc-shaped filter wall (15) gradually rises in the counterclockwise direction; Two side plates (31) are fixed to the upper sides of the arc-shaped filter wall (15); a solid residue scraping block (22) is movably arranged between the two side plates (31); the outer surface of the solid residue scraping block (22) includes a lower convex arc surface (21) and an upper sliding plane (23); The arc radius of the lower convex arc surface (21) of the solid residue scraping block (22) is consistent with the arc radius of the concave arc surface (5) on the upper side of the arc-shaped filter wall (15); The intersection of the counterclockwise end of the lower convex arc surface (21) and one end of the sliding plane (23) forms a scraping edge (27), and the scraping edge (27) is in sliding engagement with the clockwise end of the concave arc surface (5); Under normal conditions, the lower convex arc surface (21) blocks the opening above the solid residue collection bin (20), and the sliding plane (23), the concave arc surface (5) and the two side plates (31) together enclose a filter chamber (34). The landfill leachate in the filter chamber (34) leaks down into the liquid collection bin (16) through the filter holes (9) on the arc-shaped filter wall (15); An actively rotatable rotating shaft (26) is coaxially arranged at the arc axis of the arc-shaped filter wall (15), and the rotating shaft (26) is fixed to the side of the solid residue scraping block (22) via a swing arm (24); The arc surface axis of the lower convex arc surface (21) of the solid residue scraping block (22) coincides with the axis of the rotating shaft (26); The counterclockwise end of the arc-shaped filter wall (15) is fixedly connected to an inclined wall (13), the upper surface of the inclined wall (13) is an inclined surface (12), the lower end of the inclined surface (12) is provided with a push shovel body (14), a push shovel inclined surface (4) is provided on the push shovel body (14), the lower end of the push shovel inclined surface (4) is a push shovel blade (8), and the push shovel blade (8) is at the connection between the clockwise end of the concave arc surface (5) and the lower end of the inclined surface (12); It also includes an original leachate leakage outlet (10), which is located on the upper side of the push blade slope (4); A telescopic device (7) is fixed on the inclined surface (12) along the inclined surface direction, and the end of the telescopic rod (6) of the telescopic device (7) is fixedly connected to the tail of the push shovel body (14); During the counterclockwise rotation of the solid residue scraping block (22) around the axis of the rotating shaft (26), the lower convex arc surface (21) slides counterclockwise along the arc surface of the concave arc surface (5), so that the scraping edge (27) performs a scraping action on the concave arc surface (5) in the counterclockwise direction. When the scraping edge (27) moves counterclockwise along the concave arc surface (5) until it coincides with the pushing blade (8), the sliding plane (23) is just parallel to and coplanar with the inclined plane (12). At the same time, the lower convex arc surface (21) coincides with the concave arc surface (5), and the opening above the solid residue collecting bin (20) is exposed. At this time, the sliding end of the lower part of the sliding plane (23) corresponds to the opening above the solid residue collecting bin (20); subsequently, the extension of the telescopic rod (6) enables the pushing shovel body (14) to perform a downward pushing motion from the inclined plane (12) to the sliding plane (23).

2. The leachate receiving hopper of the landfill system according to claim 1, characterized in that: Cleaning and collection process of large particles of residue, debris and solid debris accumulated on the concave arc surface (5): The rotating shaft (26) rotates counterclockwise, causing the solid residue scraping block (22) to rotate counterclockwise around the axis of the rotating shaft (26), thereby causing the lower convex arc surface (21) and the scraping edge (27) to slide counterclockwise along the arc surface of the concave arc surface (5). When the scraping edge (27) moves counterclockwise along the concave arc surface (5) until it coincides with the pushing blade (8), the telescopic rod (6) gradually extends. As the telescopic rod (6) continues to extend, under the pushing of the pushing shovel body (14), the accumulated large particles of residue, fragments and solid debris all slide down along the descending direction of the sliding plane (23) into the solid residue collection bin (20).

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