JP3191023U - Dry selective sorting system for sifted residue - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry selection and sorting system for a residue under a sieve of a building mixed waste in which a thermal ablation weight loss of 5% or less performed by a wet sorting method can be adjusted without water treatment. SOLUTION: This is a dry sorting system for carefully selecting a residue under a sieve of about 10 mm to less than 20 mm or less than about 10 mm of building mixed waste, and vibrating sieve plates 20 and 50 vibrated by a motor are provided at an angle. , The air blown by the blower means 22 and 51 is blown up to the vibrating sieve plate surface, the residue under the sieve is put into the vibrating sieve plate surface, and the material to be sorted having a large specific gravity that has not passed through the vibrating sieve plate is directed toward the upper end. A specific gravity difference sorting device that sorts the material to be sorted by specific gravity by separating and moving the material to be sorted with a small specific gravity toward the lower end and dropping the material to be sorted with a large specific gravity passing through the vibrating sieve plate under the mesh of the vibrating sieve plate. A plurality of 18 and 42 were provided, and the frequency of the specific gravity difference sorting device provided on the downstream side was made higher than that on the upstream side. [Selection diagram] Fig. 1

Description

  The present invention relates to a dry selective sorting system for building mixed waste, which is capable of adjusting the amount of heat loss by carefully selecting a residue under sieve of less than 20 mm of building mixed waste.

  Conventionally, as building waste materials generated by construction work or building demolition, etc., combustible materials (organic matter) such as wood pieces, paper pieces such as cardboard, cloth pieces, plastic pieces, rubber pieces, concrete pieces, asphalt pieces, stones, reinforcing bars, etc. Non-ferrous metal pieces such as copper, non-ferrous metal pieces such as copper, nonflammable materials (inorganic materials) such as glass pieces and ceramic pieces, earth and sand, dust and other wastes are mixed to form building mixed waste.

  These architectural mixed wastes are sorted by hand sorting, wind sorting, vibrating screen, etc., and reused as materials according to the sorted items. As a sorting device used for such sorting, there is a specific gravity difference sorting device shown in Patent Literature 1 and Patent Literature 2, for example. Various sorting systems have been proposed as sorting systems for sorting building mixed waste. For example, there is a building waste sorting system shown in Patent Document 3.

  On the other hand, in the above-described sorting process, a residue mixed with earth and sand less than about 10 to 20 mm, which is called “under-sieving residue” that has passed through the sieve screen of the sorting machine, is generated. This residue under the sieve is managed mixed waste that cannot be handled as stable waste.

  The residue under the sieve is a managed mixed waste. However, due to the revision of the guidelines, in the future, it will be compliant with the comprehensive judgment theory regarding waste applicability and will not be contaminated visually. If a certain requirement is satisfied, it can be sold as a material or used on its own.

  However, since the residue under the sieve of less than about 10 to 20 mm is a residue that is generated after selection by various conventional sorting systems as described above, there is a problem that sorting cannot be performed by the conventional sorting system.

JP-A-11-262733 Utility Model Registration No. 3128933 JP 2005-279568 A

  The present invention has been made in view of the above-mentioned problems of the prior art, and by carefully selecting a residue under a sieve of less than 20 mm of building mixed waste, a heat reduction of 5% or less usually performed by a wet sorting method is achieved. It is an object of the present invention to provide a dry selective sorting system for building mixed waste that can be adjusted without water treatment.

  In order to solve the above-mentioned problems, the dry screening system for residue under sieve according to the present invention is a dry screening system for selecting a residue under sieve of approximately 10 mm to less than 20 mm or less than 10 mm of building mixed waste. The vibration sieve plate that is vibrated by the motor is inclined, the air blown by the blowing means is blown onto the vibration sieve plate surface, the residue under the sieve is introduced into the vibration sieve plate surface, and the vibration sieve plate is The material to be sorted having a high specific gravity that did not pass is separated and moved in the upper end direction and the material to be sorted having a low specific gravity is moved in the lower end direction, and the material to be sorted having a high specific gravity that passes through the vibrating sieve plate is moved under the screen of the vibrating sieve plate. A plurality of specific gravity difference sorting devices for sorting the substances to be sorted by specific gravity by dropping them, and among the plurality of specific gravity difference sorting devices, a specific gravity difference sorting device provided on the downstream side. Characterized by comprising the vibration frequency is made larger than the specific gravity difference sorting device upstream.

  Among the plurality of specific gravity difference sorting devices, it is preferable that the frequency of the specific gravity difference sorting device provided on the downstream side is larger than the specific gravity difference sorting device on the upstream side by 5 Hz or more, and the specific gravity difference sorting provided on the downstream side. More preferably, the frequency of the apparatus is increased by about 10 to 30 Hz compared to the specific gravity difference sorting apparatus on the upstream side.

  It is preferable to provide a dry-type washing machine downstream of the specific gravity difference sorting device. The dry cleaning machine is provided in order to remove organic substances attached to inorganic substances. In the present specification, the organic substance refers to combustible materials such as wooden pieces, paper pieces such as cardboard, cloth pieces, plastic pieces, rubber pieces, etc., and the inorganic matter refers to metal pieces such as concrete pieces, asphalt pieces, stones, reinforcing bars, etc. Non-ferrous metal pieces such as copper, glass pieces, ceramic pieces, etc.

  Further, the dry cleaning machine has a cylindrical mesh having openings at both ends, the cylindrical mesh is provided with a rotating blade inside and inclined, and an opening at the upper end while the rotating blade rotates. The materials to be sorted input from the part are rubbed against each other, and the material to be sorted having a small particle size passes through the cylindrical mesh and falls under the mesh, and the particle size that does not fall under the mesh of the cylindrical mesh It is preferable that the material to be sorted is discharged from the opening at the lower end so that the amount of heat reduction can be adjusted.

  According to the dry selection and selection system for sifted residue of the present invention, the amount of heat loss can be adjusted by selecting the sifted residue of about 10 to less than 20 mm of the mixed mixed waste, and the heat normally performed by the wet sorting method. There is a remarkable effect that the weight loss of 5% or less can be adjusted without water treatment. This will increase the recycling rate of intermediate treatment of building mixed waste and the possibility of reusing refined gravel sand.

It is a schematic explanatory drawing of the whole structure of the dry-type selective screening system of the residue under a sieve which concerns on this invention. It is a selection flow diagram of a selection process using a dry-type selection and selection system for residue under sieve according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view showing an embodiment of a dry cleaning machine suitably used in a dry selective screening system for residues under a sieve according to the present invention. FIG. 4 is a schematic side view of FIG. 3. It is a schematic explanatory drawing of the dry-type washing machine shown in FIG.3 and FIG.4.

  Embodiments of the present invention will be described below with reference to the accompanying drawings, but it goes without saying that various changes or modifications can be made to these embodiments without departing from the technical idea of the present invention. In the drawing, the same members are denoted by the same reference numerals.

  The overall structure and flow of the dry selective screening system for the residue under sieve according to the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 10 denotes a dry selective sorting system of the present invention.

  A dry sieving and sorting system 10 for sieving residue according to the present invention is a sieving system for carefully selecting sieving residues of building mixed waste. As the residue under the sieve which is the material to be selected, the residue under the sieve of less than 10 to 20 mm or less than 10 mm of the building mixed waste can be suitably selected.

  In FIG. 1, reference numeral 12 denotes a charging hopper for charging a material to be sorted (residue under sieve). The material to be sorted input to the input hopper 12 is input to the first specific gravity difference selection device 18 through the conveyor 14 and the vibration feeder 16.

  The first specific gravity difference sorting device 18 is provided with an inclined vibration sieve plate 20 that is vibrated by a motor, blows air blown by the blowing means 22 onto the surface of the vibration sieve plate 20, and The residue under the sieve is charged, the material to be sorted having a large specific gravity that has not passed through the vibrating sieve plate is separated and moved in the upper end direction, and the material to be sorted having a small specific gravity is separated and moved in the lower end direction, and the specific gravity passing through the vibrating sieve plate 20. This is a specific gravity difference sorting device that sorts a material to be sorted by specific gravity by dropping a material to be sorted having a large size under the screen of the vibrating sieve plate. As such a specific gravity difference sorting device, a conventionally known device can be used, and for example, the specific gravity difference sorting device described in Patent Documents 1 to 3 can be used.

  In the first specific gravity difference sorting device 18, a material to be sorted of heavy specific gravity such as crushed stone having a large specific gravity (for example, a specific gravity of 0.9 or more) moves toward the upper end and is discharged. Substances to be sorted, such as organic substances having a small specific gravity (for example, those having a specific gravity of 0.2 or less and exceeding a specific gravity of 0.01) move toward the lower end and are discharged, thereby removing the organic substances.

  In the first specific gravity difference sorting device 18, dust collection material having a very low specific gravity (for example, specific gravity of 0.01 or less) is collected by the dust collection hood 24 and discharged.

  Further, in the first specific gravity difference sorting device 18, a material to be sorted such as sand having a high specific gravity (for example, a specific gravity of 1.1 or more) passing through the vibrating sieve plate 20 is dropped under the net.

  In the first specific gravity difference sorting device 18, the material to be sorted of heavy specific gravity that has been moved and discharged in the upper end direction is crushed by the crusher 28 through the conveyor 26, and then passed through the conveyor 30 to the dry cleaning machine 32. Sent. A conventionally known crusher 28 can be used.

  On the other hand, in the first specific gravity difference sorting device 18, the light specific gravity material to be sorted that has been moved and discharged in the lower end direction is sent to the particle size sorter 34. The particle size sorter 34 is also called a vibration sieve, and the mesh plate is vibrated by vibrating a frame body to which a mesh plate (sieve) is attached. A particle size is selected by leaving a large particle size on the plate and dropping a small particle size below the mesh plate. As such a particle size sorter, a conventionally known particle size sorter can be used. For example, a particle size sorter described in Patent Document 2 can be used.

  In the first specific gravity difference sorting device 18, a substance to be sorted having a large specific gravity dropped under the screen of the vibration sieve plate 20 is sent to the cushion hopper 38 through the conveyor 36, and is passed through the vibration feeder 40. To the specific gravity difference sorter 42 and re-sorted.

  The second specific gravity difference sorting device 42 has the same configuration as that of the first specific gravity difference sorting device 18, and is provided with an inclined vibration sieve plate 50 that is vibrated by a motor. Blowing up on the surface of the vibrating sieve plate 50, putting the residue under the sieve on the surface of the vibrating sieve plate, and selecting the material to be sorted having a large specific gravity that has not passed through the vibrating sieve plate 50 in the upper end direction, It is a specific gravity difference sorting device that separates and moves a material to be sorted by specific gravity by separating and moving in a lower end direction and dropping a material to be sorted having a high specific gravity passing through the vibrating sieve plate under the mesh of the vibrating sieve plate.

  The second specific gravity difference sorting device 42 is a device having the same configuration as that of the first specific gravity difference sorting device 18, but the frequency is set larger than that of the first specific gravity difference sorting device 18. Generally, the frequency of the specific gravity difference sorting device is used at about 50 Hz. For example, when the frequency of the first specific gravity difference sorting device 18 provided on the upstream side is about 50 Hz, the downstream side first frequency difference sorting device 18 is used. The frequency of the second specific gravity difference sorting device 42 is set to about 60 Hz. That is, it is preferable to set the frequency of the second specific gravity difference sorting device 42 on the downstream side to be larger than the frequency of the first specific gravity difference sorting device 18 provided on the upstream side by 5 Hz or more.

  In the particle size sorter 34, the material to be sorted having a small particle size dropped under the net of the mesh plate is also sent to the cushion hopper 38 through the conveyor 44, and the second specific gravity difference is passed through the vibration feeder 40. It is sent to the sorting device 42.

  In the particle size sorter 34, the material to be sorted having a large particle size that has not passed through the mesh plate is sorted as an organic substance 48 through the conveyor 46.

  In the second specific gravity difference sorting device 42, the light specific gravity material to be sorted that has been moved and discharged in the lower end direction is sorted as an organic material 48 through the conveyor 46.

  Also in the second specific gravity difference sorting device 42, dust collection material having a very small specific gravity is collected by the dust collection hood 49 and discharged.

  In the second specific gravity difference sorting device 42, the material to be sorted of the heavy specific gravity material that has been moved and discharged in the upper end direction and the material to be sorted having a large specific gravity dropped under the screen of the vibration sieve plate 50 are the conveyor 52 and the conveyor 54. Are respectively sent to the dry cleaning machine 32.

  In the dry cleaning machine 32, the substances to be sorted are rubbed together and washed by squeezing. Thereby, the organic substance adhering to the surface of the inorganic substance to be sorted is peeled and removed. The material to be sorted having a small particle size, which has been ground, falls through the cylindrical mesh 56 and falls under the mesh, and the material to be sorted having a large particle size that has not fallen under the mesh of the cylindrical mesh 56 has an opening at the lower end. It will be discharged from the part. The material to be sorted that has passed through the cylindrical net 56 and dropped under the net and the material to be sorted discharged from the opening at the lower end are sorted as gravel sand 60 through the conveyor 58.

  Further, the organic matter peeled and removed by the dry cleaning machine 32 is collected and discharged.

  Dust collected from the first specific gravity difference sorting device 18, the second specific gravity difference sorting device 42 and the dry cleaning machine 32 is collected by the dust collector 62. In the dust collector 62, the dust is separated by the swirling airflow, and the organic matter is sorted as the organic matter 48. The dust having a low specific gravity is further sent to the bag filter 64, and the organic matter filtered by the filter is selected as the organic matter 48. The cleaned air is discharged into the atmosphere by the blower 66. Reference numeral 68 denotes a compressor connected to the bag filter 64.

  A dry cleaning machine suitably used in the dry selective sorting system 10 of the present invention will be described more specifically with reference to FIGS.

  3 to 5, the dry cleaning machine 32 is configured to be rotatable by a frame body 72 having an insertion port 70 supported by a cylindrical mesh 56 via a rotation shaft 74. Inclination is possible as shown in FIG. Reference numeral 76 denotes a drive motor that rotates the rotary shaft 74. While the cylindrical mesh 56 having the openings 78 and 80 at both ends is tilted, the substance to be sorted introduced from the introduction port 70 while the cylindrical mesh 56 is rotating is introduced into the cylindrical mesh 56 from the opening 78 at the upper end. Introduced to the inside, the materials to be sorted are rubbed against each other and washed by scouring, and the organic matter adhering to the inorganic surface is peeled off and removed.

  In this way, a grinding effect is produced by rubbing each other, and the ground material to be sorted having a small particle diameter passes through the cylindrical net 56 and falls under the net and passes through the shooter 82 under the net. It is discharged from the outlet 84 and selected as gravel sand 60 as described above.

  Further, the organic matter adhered to the surface is peeled and removed, and the substance to be sorted having a large particle size that did not fall under the mesh of the cylindrical net 56 is discharged from the lower end opening 80 and passes through the lower end discharge port 86. As described above, it is selected as gravel sand 60.

  Dust floating in the dry cleaning machine 32 is collected by the dust collector 62 described above through the dust collection hoods 88 and 90, respectively.

  Thus, the present invention is characterized in that a plurality of specific gravity difference sorting devices are provided, and the frequency of the specific gravity difference sorting device provided on the downstream side is made larger than that on the upstream specific gravity difference sorting device. is there. In the illustrated example, a first specific gravity difference sorting device 18 and a second specific gravity difference sorting device 42 are provided, and the frequency of the second specific gravity difference sorting device 42 is larger than the frequency of the first specific gravity difference sorting device 18. However, since it is only necessary to provide a plurality of specific gravity difference sorting devices, three or more specific gravity difference sorting devices are provided so that the frequency increases as going downstream. You can also.

  In the present invention, the material to be sorted of the heavy specific gravity material that is moved in the upper end direction of the first specific gravity difference sorting device 18 and the second specific gravity difference sorting device 42 and the material to be sorted having a large specific gravity falling under the net are: The amount of organic matter mixed in is further reduced, and the heat reduction accuracy is improved.

  Further, the organic matter adhering to the surface of the material to be sorted of the heavy specific gravity that is moved and discharged in the upper end direction of the second specific gravity difference sorting device 42 and the material to be sorted having a large specific gravity falling under the net is dry-washed. Since it is peeled off and sorted by going through, the heat reduction accuracy is further improved.

  As described above, the possibility of recycling the target for landfill disposal increases due to the improvement of the heat loss reduction accuracy, and the reduction of the processing cost and the increase of the secured resource amount can be expected.

10: Dry-type selective sorting system for sieve residue according to the present invention, 12: Feeding hopper, 14, 26, 30, 36, 44, 46, 52, 54, 58: Conveyor, 16, 40: Vibrating feeder, 18: No. One specific gravity difference sorting device, 20: vibrating sieve plate, 22, 51: air blowing means, 24, 49, 88, 90: dust collecting hood, 28: crusher, 32: dry cleaning machine, 34: particle size sorting machine, 38 : Cushion hopper, 42: Second specific gravity difference sorting device, 48: Organic matter, 50: Vibrating sieve plate, 56: Cylindrical mesh, 60: Gravel sand, 62: Dust collector, 64: Bag filter, 66: Blower, 68: Compressor , 70: loading port, 72: frame body, 74: rotating shaft, 76: drive motor, 78, 80: opening, 82: shooter, 84: net lower discharge port, 86: lower end discharge port.

Claims (4)

A dry sorting system for carefully selecting residues under a sieve of about 10 mm to less than 20 mm or less than about 10 mm of building mixed waste,
A vibration sieve plate that is vibrated by a motor is provided at an inclination, the air blown by the blowing means is blown up to the vibration sieve plate surface, the residue under the sieve is introduced into the vibration sieve plate surface, and passes through the vibration sieve plate The material to be sorted having a large specific gravity was separated and moved in the upper end direction and the material to be sorted having a small specific gravity was moved in the lower end direction, and the material to be sorted having a high specific gravity passing through the vibrating sieve plate was placed under the mesh of the vibrating sieve plate. It is equipped with multiple specific gravity difference sorting devices that sort the material to be sorted by specific gravity by dropping it,
Among the plurality of specific gravity difference sorting apparatuses, the dry gravity selective sorting system for residues under the sieve is characterized in that the frequency of the specific gravity difference sorting apparatus provided on the downstream side is made larger than that on the upstream specific gravity difference sorting apparatus.   The sieve bottom according to claim 1, wherein, among the plurality of specific gravity difference sorting devices, the frequency of the specific gravity difference sorting device provided on the downstream side is made 5 Hz or more larger than that of the upstream specific gravity difference sorting device. Residual dry sorting system.   3. A dry selective sorting system for residues under sieve according to claim 1 or 2, wherein a dry cleaning machine is provided downstream of the specific gravity difference sorting device.   The dry cleaning machine has a cylindrical mesh with openings at both ends, and the cylindrical mesh is provided with a rotating blade inside and inclined, and the rotating blade is rotated from the opening at the upper end while the rotating blade is rotating. The materials to be sorted are rubbed against each other, and the materials to be sorted having a small particle size pass through the cylindrical net and fall under the net, and the large particle size that does not fall under the net of the cylindrical net. 4. The dry selective sorting system for residues under sieve according to claim 3, wherein the substance to be sorted is discharged from the opening at the lower end so that the amount of heat loss can be adjusted.