Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1999-05-19
2000-11-21
Nguyen, Tuan N.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
209705, 209930, 209942, B07C 700
Patent
active
061490172
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an arrangement for sorting solid waste, especially domestic waste.
Solid waste is a mixture of various materials, e.g. metal, glass, plastics, wood, and compostable organic material.
Modern process techniques for waste recycling are waste material-specific and thus require a base material free from foreign substances, which must be provided by a sorting of the waste.
The separation of the individual components or material groups is carried out by means of arrangements for sorting solid waste, whereby the human factor plays a decisive role in this process because humans are unsurpassable with regard to their ability to differentiate and their precision in non-repeatable activities.
Arrangements for sorting solid waste, especially domestic waste, and the use of these arrangements are known. These arrangements comprise a transportation belt as conveyor belt of the tension means conveyor. This transportation belt is especially that part of the conveyor belt which, at any point in time, with regard to its position, transports the material to be conveyed - the waste. The part of the conveyor belt outside of the waste loading and unloading zone is situated in a room in a superstructure mounted on a platform, under which portable or fixed containers are arranged. Above each container, there is an ejection opening in the superstructure (in the platform) through which the sorted-out materials can be thrown into the containers. The room in the superstructure is equipped with a suction ventilation which eliminates the solid and gaseous particles escaping from the waste.
In spite of the employed ventilation, the persons sorting the waste must wear protective masks to protect their respiratory tracts against the inhalation of impurities. Thick protective clothing must be worn which is resistant to the influence of the compounds contained in the waste. The use of protective masks does not, however, sufficiently prevent the invasion of impurities into the body. An infection with microbes pathogenic to humans is also insufficiently prevented.
In addition, breathing through a face mask is always arduous and increases the degree of tiring, as does working in protective clothing.
The arrangement for sorting solid waste according to the invention comprises a transportation belt which constitutes that part of the carrier element or carrier unit of the tension means conveyor, e.g. the conveyor belt of the group of plates or chutes, which, at any point in time, with regard to its position, can transport or transports the material to be conveyed--the waste. A part of the transportation belt outside of the waste loading and unloading zone--these zones are located in the area of the end sections of the transportation belt--is situated in the room in the superstructure, which is mounted on a platform. At least one container for sorted-out waste is arranged under the platform and, simultaneously, under the dumping point. The term dumping point comprises one or more dumping points in the floor of the superstructure (i.e. in the platform), regardless of their shape, for the purpose of throwing in the sorted-out waste.
The arrangement is characterized in that the part of the transportation belt situated in the room in the superstructure, including the dumping point, is separated from the room by means of an impervious housing. The housing has at least one control window for the operators, i.e. the persons who do the sorting, whereby these windows can take up any amount of the surface of the housing. The housing is embodied with at least one pair of openings, sealed by means of sleeves ending in gloves.
The arrangement advantageously contains a second transportation belt, whereby the parts of the two transportation belts situated in the room of the superstructure, including the dumping point, are imperviously separated from the room of the superstructure by means of a shared housing.
In the technical solution with two transportation belts, a separating wall is advantageously mounted between their parts whi
REFERENCES:
patent: 5205417 (1993-04-01), Herren
patent: 5263591 (1993-11-01), Taormina et al.
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