Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1985-10-23
1987-09-15
Kashnikow, Andres
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
209314, 209332, 209930, B07B 112, B07B 138, B07B 146, C02F 1100
Patent
active
046933794
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a screening apparatus, particularly for screening valuable materials, domestic garbage, industrial garbage, bulky garbage, dry garbage, wet garbage, compost and/or problematic and dangerous materials, with inclined bars capable of an oscillatory movement arranged in the transport direction.
German patent application P 34 15 090.0 relates to a sorting installation for sorting valuable materials, particularly dry garbage such as glass, cardboard, paper, plastics or the like. The sorting installation consists of an annular sorting table with manual and mechanical sorting work stations, from which the valuable materials are ejected into sorting shafts and transported in concentrically oriented disposal ducts. The installation according to the above-mentioned patent application exhibits for the preliminary sorting a preliminary sorting path or sorting machine, upon which a separation of two-dimensional and three-dimensional parts is already permitted automatically.
However, the dry garbage heavily agglomerated and entangled from the garbage transport vehicles cannot immediately be thrown directly onto a transport belt and therefore onto the preliminary sorting path according to the installation described in the above German patent application. On the contrary, it appears convenient to feed the dry garbage to the installation via a charging apparatus. It is possible to use for this purpose known moving bar gratings as screening apparatuses, the work surface of which is formed by individual bars or shaped elements which are located parallel or transversely to the conveying direction of the screenings. However, known bar gratings or bar grating screens have the disadvantage that, as a flat screen, they have only a slight cleaning effect in the case of certain materials. Furthermore, the dry garbage arriving non-uniformly cannot be distributed and/or loosened to the required degree on conventional surface screens, because the screen surface tends to clog too easily.
The underlying aim of the present invention is to develop a screening apparatus which serves particularly as a charging apparatus and screening apparatus for valuable materials from domestic garbage, industrial garbage, bulky garbage, dry garbage and/or problematic and dangerous materials. The apparatus should furthermore also be applicable to other work fields with similar sets of problems.
SUMMARY OF THE INVENTION
This aim is achieved according to the invention, starting from an apparatus of the type initially designated, in that at least two bar grating screens arranged consecutively in stepped configuration are provided with bars tapering in the transport direction, the end regions of which pointing in the transport direction are of unsupported and of open construction without fastening means.
A charging apparatus and screening apparatus, particularly for treating the materials according to the above German patent application, has been created as a result of the appartus according to the invention. Thus, the dry garbage of widely varying composition, delivered in the container vehicles for example, can be charged initially onto the apparatus according to the invention. Due to the combination of the essential features of the invention, a screening action and/or a cleaning effect is achieved better than with known revolving screens, in which a continuous alternation of the screenings occurs. However, revolving screens are unsuitable for the present function, because an increased risk of clogging exists due to the continuous alternation of the screenings, and because glass, for example, is smashed by the high fall height. Furthermore, the advantage of the surface screen with a large reception surface, that is to say a large screening surface, is retained. Due to the construction of the apparatus according to the invention, the parts come to lie flat by means of a preliminary distributor path before they reach the bar grating. Consequently, the parts do not fall directly onto the first bar grating
REFERENCES:
patent: 1136674 (1915-04-01), Houston
patent: 1187238 (1916-06-01), Beaumont
patent: 1389231 (1921-08-01), Walker
patent: 2290434 (1942-07-01), Johnson
patent: 3241671 (1966-03-01), Brauchla
patent: 4003831 (1977-01-01), Tishkov et al.
patent: 4075087 (1978-02-01), Gerrans
Aufbereitungs-Technik, vol. 22, No. 7, Jul. 1981, Wiesbaden (DE), "Mogensen-Stangensizereinenrue Losung fur Verstopfungsfreie Grobklassierung", pp. 395-397.
Kashnikow Andres
Maschinenfabrik Bezner GmbH & Co. KG
LandOfFree
Screening apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screening apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1379506