JP2008036456A - Sorting machine of used fluorescent tube glass waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a recycle of metals such as copper, brass, and aluminum used for bases, and plastics by sorting used fluorescent tube crushed pieces into glass and bases, further, enable a reduction of burden in the treatment process of the used fluorescent tube by removing fluorescent materials and mercury from used fluorescent tube glass waste, and at the same time, enable the recycle of the glass. <P>SOLUTION: Since the glass used for the fluorescent tube is thin, about 1 mm, the glass breaks up only by a lifting and drop in a rotating drum. Using this property, a glass waste only a little crushed is fed in the rotating drum with holes on the periphery and rotated, the glass is crushed small, and by dropping the glass from the holes of the periphery, small glass pieces and large bases can be sorted. Next, if the screened glass is fed and rotated in the rotating drum without holes, the glass surface is scraped by a mutual bumping and scraping of the glass to enable a removal of mercury and fluorescent materials attached to the surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus for sieving waste fluorescent tube crushed pieces into glass and a base and removing fluorescent substances and mercury from the sieved glass.

Conventionally, waste fluorescent tubes have been simply crushed and landfilled by methods such as concrete solidification.
However, this method not only does not recycle aluminum caps, brass and copper wires, and glass parts used in fluorescent tubes, but also causes a problem of tight landfill sites due to the huge amount of landfills. Yes.

  Therefore, it is not crushed by a crusher at present, but it is transported to the waste fluorescent tube processing facilities in several places throughout the country as it is, and among the waste fluorescent tubes, straight pipes and annular tubes are first handed. It has come to be taken off or removed by cutting. However, this method has a high labor cost and a high machine cost, and also has a drawback in that it is transported to a waste fluorescent tube processing facility that is far away from the original model and has a high transport cost.

  Recently, in Japan, light bulb type fluorescent lamps, compact type fluorescent lamps, mercury lamps, etc. are increasing, but since these bases cannot be removed, they can be simply crushed and solidified as before. There is no other way but to reclaim land.

There are two methods for removing fluorescent substances and mercury from crushed fluorescent tubes: wet methods of cleaning glass scraps with water or chemicals and dry methods of removing mercury by heating. Various techniques have been developed and disclosed as pretreatment techniques for mitigation. For example, JP-A-11-207313, JP-A-2004-57957, etc. are methods for sucking fluorescent powder by cutting both ends of a straight pipe. These methods are costly to the apparatus and cannot handle bulb-type, compact bulbs, mercury lamps, and the like. Japanese Patent Application Laid-Open No. 2004-111325 requires a high labor cost and cannot handle a bulb type, a compact bulb, a mercury lamp, or the like. Japanese Patent Laid-Open No. 2001-286828 has a small removal effect even if the apparatus is complicated. Although these technologies are used in each waste fluorescent tube processing facility developed, they are not widely used in general.
JP-A-11-207313 JP 2004-57957 A JP2004-111325A JP 2001-286828 A

  Recycling metals and plastics such as aluminum, brass, and copper by removing the caps from waste fluorescent tubes such as straight tubes, ring tubes, light bulbs, compact bulbs, mercury lamps, etc. Making it possible. Also, by efficiently removing fluorescent substances and mercury from waste fluorescent tube glass waste, the burden on the processing process of the waste fluorescent tube can be reduced and the glass can be recycled.

  In order to achieve the above object, in the present invention, the drum can filled with waste fluorescent tube glass scraps is lifted, the waste fluorescent tube glass scraps are once put into the hopper, and gradually fed into the trommel type rotating drum from the hopper. To do.

  The rotating drum according to claim 2 is a trommel type rotating drum for sieving glass and bases from waste fluorescent tube glass scrap, and a metal having a relatively rough hole having a hole diameter of 15 to 30 mm on the outer peripheral portion. Holding the member, the rotational speed is relatively slow, 15 to 30 revolutions per minute. The coarsely broken waste fluorescent tube glass waste put in the rotating drum is lifted by centrifugal force and falls from the upper part of the rotating drum by gravity, so that only the glass portion is finely crushed. Since the plastic of the base is not broken only by its own weight, only the glass part is screened from the hole provided in the outer peripheral part, and the base is separated from the glass by falling down.

  When it is necessary to further sort the bases by size, the above-described trommel type rotary drum may be doubled. For example, if the shape shown in FIG. 2 is used, a relatively large base such as a light bulb type, a compact bulb, or a mercury lamp is screened by an inner rotating drum, and a straight tube, an annular tube, etc. Of relatively small caps can be screened.

  The glass that has been sieved by the rotating drum and dropped down is once put into a hopper, and then put into the rotating drum according to claim 3 from the hopper to remove fluorescent substances and mercury from the glass. The outer peripheral portion of the rotating drum has no holes or fine holes of 3 mm or less. In order to suck the powdery fluorescent substance and mercury floating in the rotating drum with a cyclone type dust collector, the outer side of the rotating drum is covered with a plate-like one and is almost sealed.

  By rotating the rotating drum according to claim 3 to the discharge side, the glass can be moved gradually from the input port toward the discharge port. Fluorescent material and mercury are attached to the glass, but it is scraped off by rubbing the glass and glass against each other in the rotating drum. In order to increase the scraping force, the rotational speed of the rotating drum is rotated relatively fast, 20 to 50 revolutions per minute. Also, if a certain amount of glass is not contained in the rotating drum, rubbing between the glasses will be reduced. Therefore, about 1/6 to 1/3 of the volume of the rotating drum is placed in the rotating drum. In a batch process, the fluorescent material and mercury are scraped off from the glass and removed by suction with a cyclone-type dust collector.

  Since the present invention is configured as described above, according to the waste fluorescent tube separator according to claim 1, coarsely divided waste fluorescent tube glass waste is sieved into a base and waste fluorescent tube glass by a slow rotating drum. The fluorescent material and mercury can be removed from the separated and sorted waste fluorescent tube glass by a rotating drum that rotates quickly.

  According to the waste fluorescent tube separator according to claim 2, since only the glass breaks and becomes small in the roughly broken waste fluorescent tube glass scrap by the rotating drum having a relatively low rotational speed, By a metal member having a rough hole, it can be screened and separated into a base and glass.

  According to the waste fluorescent tube separator according to claim 3, the glass can be rubbed with each other by the relatively fast rotating drum, so that the fluorescent substance and mercury are separated from the separated waste fluorescent tube glass surface. And a generally clean glass can be obtained.

  With the waste fluorescent tube separator of the present invention, it becomes possible to separate glass and bases at low cost without requiring manual labor or large-scale equipment, and further, fluorescent material and mercury are separated from glass at low cost. It can be recovered. Compared to the current method of taking the base by hand or cutting the glass with a cutting machine, the cost will be greatly reduced, and appropriate disposal and recycling of waste fluorescent tubes will be advanced. In addition, at present, the bulb type fluorescent lamp and the compact type fluorescent lamp cannot easily be removed because the plastic base part cannot be easily removed, but this waste fluorescent tube sorter can not only process at a low cost. , Resources can be reused.

  Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic explanatory view of a sorting and dry type washing machine according to the present embodiment, and FIG. 2 is a cross-sectional view of a cross section of a trommel type rotary drum 5 cut into a ring. FIG. 3 is a cross-sectional view of a rotary drum 7 according to a third aspect of the present invention, in which the cross section is cut into a ring.

  Waste fluorescent tube glass waste roughly divided by the waste fluorescent tube crusher is accommodated in the drum can 1. The drum can 1 is lifted by a drum lift 2, the drum can 2 is tilted at the top, waste fluorescent tube glass waste is once put into the hopper 3, and is gradually fed into the trommel-type rotating drum 5 by the vibrating inclined slope 4. To go.

FIG. 2 is a cross-sectional view in which the cross section of the trommel-type rotary drum 5 is cut into circles.
The rotating drum 5 is of a double type, and the outer peripheral portion of the rotating drum on the inside is a metal member, for example, having a metal plate with holes having a hole diameter of 30 mm to 40 mm, or replacing this metal plate. It may be a punching metal or a mesh-like sieve. Here, relatively large caps such as a bulb type, a compact bulb, and a mercury lamp are discharged from the discharge port without falling off the sieve. What is sieved from the inner rotating drum is then screened by the outer rotating drum.
The outer periphery of the outer rotating drum has a metal plate with a hole diameter of 15 to 30 mm, and relatively small caps such as straight pipes and annular pipes are discharged from the outlet without falling off the sieve. .

  The glass scraps entering the trommel type rotating drum in FIG. 2 are lifted up to the upper part of the drum by the centrifugal force rotating the rotating drum, and fall from the upper part by gravity. Fluorescent tube glass is soft and fragile, so it breaks and shrinks little by little by the weak impact force when dropped. In order to prevent plastic caps such as light bulbs, compact spheres, and annular tubes from being broken by the impact force at the time of dropping, the rotational speed is adjusted so that the impact force does not become too strong. As the diameter of the rotating drum increases, the centrifugal force becomes stronger and the impact force becomes stronger. For example, if the rotating drum has a diameter of 0.6 m, an appropriate rotation speed is about 20 to 30 rotations per minute. It is.

  The waste fluorescent tube glass screened off from the rotating drum on the outside is temporarily stored in the hopper 6. Waste fluorescent tube glass stored in the hopper 6 is fed into the next rotating drum 7 at regular intervals by batch processing.

FIG. 3 is a sectional view in which the section of the rotary drum 7 is cut into a ring.
The outer peripheral portion of the rotating drum 7 is made of a metal plate having no holes or fine holes of 3 mm or less, and is rotated at a relatively high speed, thereby strengthening the glass-glass rubbing force. Since the centrifugal force increases as the diameter of the rotating drum increases, the force that glass and glass rub against each other increases. For example, in the case of a rotating drum with a drum diameter of 0.6 m, 30 to 50 rotations per minute is appropriate. is there.

  The waste fluorescent tube glass carried into the rotating drum 7 is further finely crushed in the rotating drum. The fluorescent glass is coated with fluorescent material and mercury inside the round glass, but when the glass is crushed and made fine, the round glass becomes nearly flat, and the fluorescent material and mercury applied on the inside are easily scraped. It will become. Further, by retaining a certain amount of glass in the rotating drum 7, the glass collides with each other and the shavings are promoted. For this reason, in order to perform processing by retaining about 1/6 to 1/3 of the drum capacity of glass in the rotating drum 7, batch processing is performed.

  The outsides of the cyclone type rotating drum 5 and the rotating drum 7 are covered with a plate-like cover, are made to be substantially sealed, and are shut off from the outside air. Powdered fluorescent material and mercury floating inside and outside the rotating drum are sucked and collected by a dust collector 9 provided with a cyclone 8.

Schematic illustration of waste fluorescent tube separator Cross-sectional view of a trommel-type rotary drum Sectional view of the rotary drum sectioned in a circular section

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum can 2 Drum lift 3 Hopper 4 Vibrating inclination slope 5 Trommel type rotating drum 6 Hopper 7 Rotating drum 8 Cyclone 9 Dust collector 10 Inner rotating drum 11 Big mouthpiece 12 Outer rotating drum 13 Small mouthpiece 14 Glass piece 15 Plate shape Cover

Claims (3)

  A sorter for sieving waste fluorescent tubes into glass and bases, removing fluorescent substances and mercury from the screened glass, and obtaining almost pure glass pieces. Waste fluorescent tube consisting of a relatively slow rotating drum and a relatively fast rotating drum for removing fluorescent substances and mercury from the sieved glass, which has a metal member with a perforated hole on the outer periphery. Sorting machine.   The outer peripheral portion of the rotating drum for sieving the glass and the base has a metal member with a relatively rough hole having a hole diameter of 15 to 30 mm, and the rotation speed is relatively 15 to 30 rotations per minute. The waste fluorescent tube separator according to claim 1, wherein the waste fluorescent tube separator is slow. The outer periphery of the rotating drum that removes the fluorescent substance and mercury from the glass has a metal member with no holes or fine holes of 3 mm or less, and the rotation speed is relatively 20 to 50 rotations per minute. Featuring a cleaning function by increasing the speed, removing phosphor and mercury from the glass by batch processing, and collecting the phosphor and mercury by sucking the inside and outside of the rotating drum with a dust collector. The waste fluorescent tube separator according to claim 1.

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