JP2005111317A - Volume reduction system for waste disposal place and volume reduction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a volume reduction system for a waste disposal place capable of carrying out excavation work of an enormous range of a reclaimed land without changing arrangement of a sorting device, and a volume reduction method. <P>SOLUTION: The volume reduction system has a multi-joint type conveyor 3 in which a throwing port 5 for the dug up waste 2a is movable accompanying movement of a range of excavation work of the reclaimed land 1; a hydraulic shovel 6 for magnetic sorting for sorting and removing iron scrap 8 or the like from the waste 2b conveyed by the multi-joint type conveyor 3; and a screen sorting device 9 for sorting the waste 2b obtained by sorting and removing the iron scrap 8 or the like to, for example, three kinds of wastes 21L, 21M, 21S corresponding to the size. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a volume reduction system and a volume reduction method for a waste disposal site, and relates to a volume reduction system and a volume reduction method for a waste disposal site that perform excavation work over a wide range of landfill sites.

  In recent years, the remaining capacity of waste disposal sites has become tight due to the high level of waste emissions and the decrease in the number of waste disposal sites that embed them, extending the life of waste disposal sites. Is desired. Therefore, excavate the landfill waste at the disposal site, sort out the excavated waste, backfill the incombustible material such as selected earth and sand to the landfill, and reduce the volume of the combustible material selected by incineration. A method for reducing the volume of a waste disposal site by backfilling in a landfill has been proposed (see, for example, Patent Document 1).

JP-A-9-150125

However, there are the following problems in the above-described prior art.
That is, for example, when excavation work is performed in a large landfill with a capacity of about 2 million m ³ , the excavation work range and the sorting (volume reduction) device for sorting (volume reduction) are separated from each other. The waste must be transported to a sorting (volume reduction) device, for example, by a dump truck or a conveyor. However, in a dump truck, the longer the conveyance distance, the harder it is to move and the work efficiency has been reduced. In general conveyors, the sorting (volume reduction) device may be rearranged as the excavation work range moves, and work efficiency is reduced.

  An object of the present invention is to provide a volume reduction system and a volume reduction method for a waste disposal site that can perform excavation work over a large area of a landfill without rearranging a sorting device.

  (1) In order to achieve the above object, the volume reduction system for a waste disposal site according to the present invention is capable of moving a waste input port that has been excavated as the excavation work range of a landfill is moved. It has an articulated conveyor and a sorting device that sorts the waste conveyed by the articulated conveyor.

  In the present invention, waste that has been dug from the landfill is transported to a sorting device using an articulated conveyor whose input port is movable as the excavation work range of the landfill moves. At this time, the multi-joint type conveyor can easily change the arrangement of the inlets while fixing the arrangement on the discharge side. Therefore, it is possible to perform excavation work over a wide area of the landfill without changing the sorting device arranged on the discharge side of the articulated conveyor while changing the arrangement of the inlets of the articulated conveyor.

  (2) In the above (1), preferably, the multi-joint type conveyor is provided so as to be able to turn on a traveling body capable of self-propelling on the input side.

  (3) In order to achieve the above-mentioned object, the volume reduction method of the waste disposal site of the present invention uses an articulated conveyor whose input port is movable as the excavation work range of the landfill is moved, The waste excavated from the landfill is transported, and the transported waste is sorted by a sorting device and then reduced in volume.

  According to the present invention, it is possible to perform excavation work in a large area of a landfill without rearranging the sorting device, and therefore it is possible to efficiently work even in work in a large landfill.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing a schematic configuration of an embodiment of a volume reduction system for a waste disposal site according to the present invention, and FIG. 2 is an overall structure of an articulated conveyor viewed from the direction of arrow II in FIG. FIG. 3 is a side view showing the overall structure of the screen sorting apparatus as seen from the direction of arrow III in FIG.

  1 to 3, reference numeral 1 denotes a landfill site of a target waste disposal site, and 2a is excavated from the landfill site 1 by, for example, a excavating hydraulic excavator or the like (not shown) equipped with an excavation work tool and accumulated. 3 is an articulated conveyor for transporting the excavated waste 2a, and 4 is throwing the waste 2a into the inlet (hopper) 5 of the articulated conveyor 3. For example, a hydraulic excavator for loading is provided with a gripping work tool (grapple) 4a, and 6 is used to remove iron scraps 8 and the like from waste 2b discharged from the discharge end (discharge port) 7 of the articulated conveyor 3. For example, a magnetic sorting hydraulic excavator provided with a magnetic adsorption machine (lifting magnet) 6a for sorting and removing, 9 is a screen sorting device for sorting waste 2b from which iron scraps 8 and the like have been sorted and removed by its size. Yes Reference numeral 10 denotes a loading hydraulic excavator having the same structure as the loading hydraulic excavator 5 and having, for example, a gripping work tool (grapple) 10a for loading the waste 2b into the loading port (hopper) 11 of the screen sorting device 9. is there.

  The articulated conveyor 3 is configured by, for example, three substantially straight belt conveyors 12A, 12B, and 12C (for example, each conveying distance of about 20 m to 30 m) that are rotatably connected. These belt conveyors 12A, 12B, and 12C are respectively provided so as to incline upward from the input port 5 side (left side in FIG. 2) to the discharge end 7 side (right side in FIG. 2), and the waste that has been input to the input port 5 2a is conveyed in the order of the belt conveyors 12A, 12B, 12C and is discharged from the discharge end 7. Between the discharge side of belt conveyor 12A (right side in FIG. 2) and the receiving side of belt conveyor 12B (left side in FIG. 2), and between the discharge side of belt conveyor 12B and the receiving side of belt conveyor 12C. A member or the like (not shown) for assisting the delivery of the waste 2a may be provided.

  Further, on the discharge side of the belt conveyors 12A, 12B, and 12C, for example, substantially cylindrical conveyor supports 14A, 14B, and 14C having wheels 13A, 13B, and 13C are provided, and the conveyor supports 14A and 14B include: The receiving sides of the belt conveyors 12B and 12C are connected so as to be rotatable. Further, the discharge-side conveyor support 14C is provided with a known lock mechanism (not shown) that can lock the rotation of the wheels 13C. By this lock mechanism, the arrangement of the conveyor support 14C, that is, the discharge end 7 is arranged. Can be fixed.

  Further, the insertion port 5 side of the articulated belt conveyor 3 is provided on a traveling body 16 having, for example, left and right endless track shoes 15 and 15 and the like so as to be capable of turning via a turning device (swivel wheel) 17. , Self-propelled. For example, a radio signal corresponding to the operation lever is received from a remote operation device (not shown) provided with an operation lever (not shown) that can be operated by the operator, and the turning device 17 is received according to the radio signal. Is driven to turn the traveling body 16 or the traveling body 16 is driven to travel so that the arrangement of the inlets 5 of the articulated conveyor 3 can be easily changed.

  The screen sorting device 9 includes a screen sorting unit (for example, although not shown in detail, for example) that sorts the input port 11 and the waste 2b charged into the input port 11 into, for example, three types of sizes. A structure for sorting the waste 2b based on the size of the comb teeth of the comb teeth arranged in a plurality of stages 18) and the left and right endless tracks provided below the screen sorting section 18 The traveling body 20 provided with the footwear 19, 19 (only one 19 is shown in FIG. 3) and the overflow that discharges the waste 21L having the largest particle size out of the three types of waste sorted by the screen sorting section 18 A conveyor 22, a middle conveyor 23 that discharges medium-sized waste 21M, and an under conveyor 24 that discharges the smallest granular waste 21S are provided.

  Then, the small-sized waste (for example, relatively small-sized sediment) 21S is used as covering soil for the landfill 1 and the medium-sized waste 21M and the large-sized waste 21L are reduced in volume by a volume reduction device (not shown). The As this type of volume reduction device, there are known compression devices for compressing and reducing, such as a compression device for reducing the volume, a melting and solidifying device for compressing and reducing by heating and softening, and an incinerator for reducing the volume by incineration.

  Next, the volume reduction method of the waste disposal site according to this embodiment will be described.

  In order to reduce the volume of waste landfilled at the disposal site for the purpose of extending the life of the waste disposal site, the waste 2a is first excavated and accumulated from the landfill 1 by a hydraulic excavator or the like for excavation. The excavated waste 2a is charged into the charging port 5 of the articulated conveyor 3 by the loading excavator 4 and conveyed by the articulated conveyor 3. Then, iron scraps 8 and the like are sorted and removed from the waste 2b discharged from the discharge end 7 of the articulated conveyor 3 by the magnetic sorting hydraulic excavator 6, and the sorted waste 2b is collected by the loading hydraulic excavator 10. The material is introduced into the inlet 11 of the screen sorting device 9, and sorted by the screen sorting device 9 into three types of sizes: a large grain waste 21L, a medium grain waste 21M, and a small grain waste 21S. For example, the small-size waste 21S is directly used as the cover soil for the landfill 1 and the medium-size waste 21M and the large-size waste 21L are reduced by a volume reduction device (for example, a compression device, a melt-solidification device, an incineration device, etc.). And backfill to landfill 1.

  In the present embodiment, the waste 2a dug from the landfill 1 is transferred to the landfill 1 using the articulated conveyor 3 whose input port 5 is movable along with the movement of the excavation work range of the landfill 1. It is transported to the vicinity of the magnetic sorting hydraulic excavator 6 and the screen sorting device 9 arranged. At this time, the articulated conveyor 3 can easily change the arrangement of the insertion port 5 by driving the turning device 17 and the traveling body 16 while fixing the arrangement of the discharge end 7. Accordingly, without changing the magnetic sorting hydraulic excavator 6 and the screen sorting device 9 arranged on the discharge side of the articulated conveyor 3, the landfill is changed while changing the arrangement of the inlet 5 of the articulated conveyor 3. The excavation work of 1 vast range can be performed efficiently.

  In the above-described embodiment, the multi-joint type conveyor 3 has been described by taking as an example a structure in which the insertion port 5 side is provided on the traveling body 16 so as to be capable of turning via the turning device 17, but the present invention is not limited thereto. Absent. That is, for example, the multi-joint type conveyor may be provided with a wheel instead of the traveling body 16 on the input port 5 side, and the input port 5 may be moved by being pulled by a hydraulic excavator or the like. In this case, the same effect as described above can be obtained.

  Moreover, in the said one Embodiment, although the multi-joint type conveyor 3 demonstrated taking the case where the some belt conveyor 12A, 12B, 12C was connected so that rotation was possible as an example, it is not restricted to this, For example, several A chain conveyor, a screw conveyor, or a conveyor that can be expanded and contracted in the conveyance direction may be rotatably connected. In this case, the same effect as described above can be obtained.

  Moreover, in the said one Embodiment, although the multi-joint type conveyor 3 demonstrated taking the example of the structure which conveys the waste 2a dug up from the landfill 1 in the landfill 1, for example, the outside of the landfill 1 Needless to say, it may be configured to carry. Further, the articulated conveyor 3 may be used for transporting, for example, the waste sorted by the screen sorting device 9 to the volume reduction device or the like separated from the screen sorting device 9.

It is a top view showing the schematic structure of one Embodiment of the volume reduction system of the waste disposal site of this invention. It is the side view seen from the arrow II direction in FIG. 1, and represents the whole structure of the articulated type conveyor which comprises one Embodiment of the volume reduction system of the waste disposal site of this invention. It is the side view seen from the direction of arrow III in Drawing 1, and represents the whole structure of the screen sorter which constitutes one embodiment of the volume reduction system of the waste disposal site of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Landfill 2a, 2b Waste 3 Articulated conveyor 5 Input 6 Hydraulic excavator for magnetic sorting (sorting device)
9 Screen sorting device (sorting device)
16 Running body

Claims (3)

  An articulated conveyor that can move the input port of the excavated waste as the excavation work range of the landfill moves, and a sorting device that sorts the waste conveyed by the articulated conveyor A volume reduction system for a waste disposal site.   The volume reduction system of the waste disposal site according to claim 1, wherein the articulated conveyor is provided on a traveling body capable of self-propelling on the input side so as to be turnable. A volume reduction system. After the waste excavated from the landfill is transported by an articulated conveyor whose input can move as the excavation work area of the landfill moves, the waste is reduced after it is sorted by the sorting device. A method for reducing the volume of a waste disposal site, characterized by volume treatment.

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