JP2007253122A - Sorting base of waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the operating ratio of a fusion furnace by preventing insertion of a miscellaneous solid waste material in a gap between the rotary part and the fixing part of a sorting base. <P>SOLUTION: The sorting base 9 in use for sorting operation comprises the rotary part 17 such as a plate-shaped turn table mounting the miscellaneous solid waste material on the top face, the fixing part 18 for supporting the rotary part 17 at a predetermined height and so as to freely rotate, and a sealing material for preventing the insertion of the miscellaneous solid waste material in the gap d between the rotary part 17 and the fixing part 18. The miscellaneous solid waste material mounted on the rotary part 17 is sorted by the manual operation of an operator to be placed around the fixing part 18 and temporarily stored by each predetermined method. To prevent the insertion of the miscellaneous solid waste material in the gap d, on the inner peripheral end of the fixing part 18, a brush 160a is placed over the whole periphery as the sealing material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a work table for sorting waste.

  Of the low-level radioactive waste generated at nuclear power plants, miscellaneous solid waste is packed in drums, filled with mortar and other fillers, and disposed of in a predetermined burial site. Therefore, it is preferable to reduce the volume of miscellaneous solid waste and reduce the number of embedded drums. Therefore, as a method for reducing the volume of miscellaneous solid waste, for example, a melting volume reduction facility using a high frequency induction heating method has been introduced.

  Specifically, the melting and volume reducing equipment melts and solidifies miscellaneous solid waste in a canister set in a melting furnace, solidifies, and then packs the canister together with a drum can to form a solidified material such as mortar. Is used as waste.

  The object to be melted in the melting furnace is a variety of miscellaneous solid wastes with different properties (materials, dimensions, shapes, etc.), and volume reduction is achieved by melting, for example, metals such as carbon steel and stainless steel It is a non-combustible material such as minerals, concrete, heat insulating materials and glass, and miscellaneous solid waste is placed on a sorting table for sorting work, and multiple people are placed around the sorting table by hand. Sorted.

  However, in the conventional sorting table, a small gap is formed at the boundary between the rotating part such as a plate-shaped turntable and the fixed part that supports the rotating part, and fine miscellaneous solid waste enters the gap. Then, there is a problem that the rotating part and the fixed part are trapped and the rotating part stops rotating, and each time the worker has to search for the trapping part and remove the miscellaneous solid waste. It was.

  In addition, when the rotating part stops frequently, the separation work is delayed, and the melting furnace cannot be supplied to the melting facility, so that the melting furnace is stopped, and the operation rate of the melting furnace is lowered.

  Therefore, the present invention solves the above problem, and its purpose is to prevent intrusion of miscellaneous solid waste into a small gap at the boundary between the rotating part and the fixed part of the sorting table, thereby operating the melting furnace. The structure of the sorting table which improves the rate is provided.

  The waste sorting table of the present invention that solves the above problem is a sorting table that includes a dish-like rotating portion and a fixed portion that supports the rotating portion, and separates the waste placed on the rotating portion. In addition, a sealing material for preventing entry of foreign matter is interposed in the gap between the rotating portion and the fixed portion (first invention).

  In a second aspect of the invention, the sealing material used in the first aspect of the invention is a brush fixed to the fixed portion, and the tip of the brush is brought into contact with the inner peripheral edge of the fixed portion and the outer peripheral edge of the rotating portion. It is characterized by being.

  The third invention is characterized in that the sealing material used in the first invention is a dust seal.

  According to the present invention, it is possible to prevent intrusion of miscellaneous solid waste into the gap between the rotating part and the fixed part of the sorting table, thereby improving the operating rate of the melting furnace.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of a miscellaneous solid waste treatment facility in a first embodiment of the present invention. The miscellaneous solid waste melting facility includes a pretreatment facility 1 for sorting miscellaneous solid waste, a melting facility 2 for melting fusible waste among the sorted miscellaneous solid waste, and a post-melting end It consists of a mortar solidification facility 3 in which a drum can containing molten waste is filled with mortar to obtain a solidified solid body, and a storage facility 4 for temporarily storing the solidified solidified body.

  In the pretreatment facility 1, miscellaneous solid waste 5 generated from the nuclear power generation facility is taken out once on the sorting table 9 and manually processed waste 6, direct packing 7, melting target 8 3. Sorted into categories.

  FIG. 2 is a diagram showing a sorting table in the first embodiment of the present invention. The sorting table 9 used for the sorting operation includes a rotating part 17 such as a dish-shaped turntable on which the miscellaneous solid waste 5 is placed, and a fixed part that rotatably supports the rotating part 17 at a predetermined height. 18 and a sealing material 160 for preventing intrusion of miscellaneous solid waste in a gap d between the rotating portion 17 and the fixed portion 18.

  The miscellaneous solid waste 5 placed on the rotating unit 17 is sorted into the above-mentioned three categories by the manual operation of the workers arranged around the fixed unit 18, and each is temporarily stored by a predetermined method.

  FIG. 3 is an enlarged view of a portion A in FIG. As shown in FIG. 3, a brush 160 a is pasted on the outer peripheral end of the rotating portion 17 as a sealing material 160 over the entire circumference.

  4 is a cross-sectional view taken along the line B-B 'of FIG. As shown in FIG. 4, the brush 160 a is made of hard nylon or the like and is fixed to the fixing portion 18. The tip of the brush 160a is located between the top of the inner peripheral edge of the fixed part 18 and the top of the outer peripheral edge of the rotating part 17, and completely closes the upper part of the gap over the entire circumference. The tip of 160a contacts the inner peripheral edge of the fixed portion 18 and the outer peripheral edge of the rotating portion 17 while elastically deforming to the delay side in the rotation direction.

  Therefore, since the fine miscellaneous solid waste 161 passes on the brush 160a and moves to the fixed portion 18 side (in the direction of the arrow in FIG. 4) due to the centrifugal force accompanying the rotation of the rotating portion 17, the brush 160a has a gap d It is possible to prevent intrusion of fine miscellaneous solid waste 161 into the water.

  Even if the mounting base 19 is provided over the entire outer periphery of the rotating portion 17 and the brush 160a is disposed as the sealing material 160 on the mounting base 19, the same function as described above can be obtained.

  FIG. 5 is a partial sectional view of a sorting table in the second embodiment of the present invention. Since the basic configuration of the sorting table is the same as that of the first embodiment, the same portions are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5, a dust seal 160 b made of rubber or the like is disposed as a seal material between the outer peripheral surface of the rotating portion 17 and the inner peripheral surface of the fixed portion 18. The dust seal 160b can surely prevent intrusion of fine miscellaneous solid waste.

It is a figure which shows the whole structure of the miscellaneous solid waste processing facility in 1st embodiment of this invention. It is a figure which shows the sorting stand in 1st embodiment of this invention. It is the A section enlarged view of FIG. FIG. 4 is a B-B ′ sectional view of FIG. 3. It is a fragmentary sectional view of the sorting stand in the second embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pretreatment equipment 2 Melting equipment 3 Mortar solidification equipment 4 Storage equipment 5 Miscellaneous solid waste 6 Unprocessed waste 7 Direct filling 8 Melting target 9 Sorting table 11 Input container 12 Canister 13 Storage means 14 Unloading means 17 Rotating part 18 Fixing part 19 Mounting base 160 Sealing material 160a Brush 160b Dust seal 161 Fine miscellaneous solid waste d Crevice

Claims (3)

A sorting table that includes a dish-shaped rotating unit and a fixed unit that supports the rotating unit, and separates wastes placed on the rotating unit,
A waste sorting table, wherein a sealing material for preventing foreign matter from entering is interposed in a gap between the rotating portion and the fixed portion.   The said sealing material is a brush fixed to the said fixing | fixed part, and makes the front-end | tip of this brush contact the inner periphery of the said fixing | fixed part, and the outer periphery of the said rotation part, The Claim 1 characterized by the above-mentioned. Waste sorting table. The waste sorting table according to claim 1, wherein the sealing material is a dust seal.

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