DE2616158A1 - ROTATING SEPARATING AND REFINING SCREEN, ESPECIALLY FOR PRE-SCREENING IN THE CITY AREA - Google Patents

Description

R.UTI.R. Soc.r.l., Rome / Italy, Via Bruxelles 53

"Rotating separating and refining sieve, in particular for the pre-screening of solid urban waste "

The invention relates to a rotating separating and refining screen, especially for the pre-screening of solid urban waste.

When treating solid urban waste, it is necessary to make a pre-selection of the same in order to reduce the to separate particularly bulky and unusable components from solid urban waste, because materials are more certain Dimensions and textures would be due to their heterogeneity and their particularly large dimensions create great problems for their elimination when entering the treatment process.

The known separators are not very suitable for the aforementioned purpose. A vibrating separator, for example, has a tendency

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DIPL. - ING. W. GRÄMKOW 7 STUTTGART 5 O (BAD CANNSTATT) SEELBERGSTR. 23/25 TEL. (0711> 56 72 61

DR. C. MAN ITZ DIPL.-ING. M. FINSTERWALD 8 MÖNCHEN 22. ROBERT- KOCH-STRASSE 1 TEL. (089) 22 42 11. TELEX 05-29672 PATMF

or a vibrating separator and also a rotating separator with a perforated surface or a pierced one Coat taking into account the special nature of the material to be treated and incorporated into it to become clogged very quickly. The elimination of this blockage takes time, which is the efficiency of the isolator is noticeably reduced.

During study and experiments in this regard it was found that for a preselection of solid urban waste, the vibrating sieves or vibrating sieves are in no way usable. The known rotating screens are also useless for the aforementioned purpose, because of the heterogeneity of the to material to be treated and the presence of constituents in foils and strips, the holes in the sieve itself clog extremely quickly. In other words, it could be learned that with the known rotating Sieve the strip and film-shaped components strive to each other between two adjacent to put openings of the sieve, which in a short time a complete clogging of the sieve itself Consequence. The distribution of this, the holes of the sieve laying material is based on the size of the Sieves and not in terms of its length.

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As a result of the research in this area, it has been found that one for the preselection of the solid urban waste suitable separator must be a rotating sieve with openings, the ratio of the length of the openings to the width of the same is extremely large.

The present invention therefore relates, in particular, to a rotating separating and attenuating screen for the preselection of solid urban waste, which, however, generally also for the treatment of a heterogeneous one Material is suitable and through which the known vibrating separators or the known vibration separators own disadvantages can be effectively avoided.

The separating and refining sieve according to the invention is therefore characterized in that the Ratio of. the length of the openings provided on its outer shell is extraordinary to the width of the same is great. In a preferred embodiment of the proposed separating and refining sieve, this consists of spars which run along the generatrix of the Sieve-forming cylindrical body are arranged, and from a number of expediently spaced or detachable and attached to the bars

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ORIGINAL INSPECTED

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ridians, i.e. circumferential elements. The openings on the side wall of the separator according to the invention therefore have a much greater length compared to the width, the length of each slot being limited by the spars

by

and the width of the same / the distance between two neighboring ones Meridians is determined.

The rotating separating and refining screen according to the invention will be explained in more detail with reference to the accompanying drawing, for example. Show it

Fig. 1 schematically shows an embodiment of the proposed Sieves;

FIG. 2 shows a side view of a modification of the design of the screen according to FIG. 1.

According to FIG. 1, the sieve according to the invention consists of spars

11, which are arranged along the generatrix of the cylindrical body forming the actual screen. At these spars 11 are meridians in any way

12, e.g. in the form of circular elements, where the latter are distanced from each other. The meridians 12 determine in cooperation with the spars 11 on the circumference of the cylindrical body a series of openings 15, which have an exceptionally large ratio of length to width.

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As can be seen from the drawing, the openings are IJ on the mantle of the cylindrical body one behind the other arranged and have a length that is limited exclusively by the spars 11. At the Jacket and in each cross section of the same will thus be as many openings 13 as there are spars 11 are provided.

The number of bars 11 and the positioning of the same obviously depends on the weight that the Must carry sieve during sieving operation. In the exemplary embodiment according to Pig. I are four spars 11 arranged. It is obvious, however, that more or fewer spars could be provided.

In the practical tests it was found that the material introduced during the sieving process can move unchecked through the openings 13, while at the free end of the screen only those components of this material emerge which are due to the dimensions cannot move through the openings 13, i.e. those materials that damage the subsequent machines and thus cause considerable problems if they entered the further treatment process. It could also be determined

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be that film and strip-shaped components and also rope products, such as cords, ropes, etc., which should be attached to the spars 11, do not cause clogging of the openings IJ> , whereby the screen is always ready for use and does not require periodic maintenance.

In the modification of the subject matter of the invention shown in FIG. 2, the possibility was anticipated that e.g. foil-shaped materials (paper or plastic) wrap around the spars 11, namely around those parts of the spars 11 which delimit the slots or openings 13, For this purpose, conveyor blades 14 were provided in accordance with the spars 11, which the hdme 11 cover and remove the material. According to a preferred embodiment of this modification, the Conveyor blades l4 such a development that the circumference thereof plus surface area of the exposed spar 11 is greater than the largest dimension of one Paper or plastic film that could possibly be in the sieve so that such films are not Wrap around the spars 11 and wrap them completely around them.

The one with the rotating separating and 60 9 844/0 859

Refinement sieve achievable advantages are above all a reliable mode of operation, the practical lack of maintenance work and relatively low acquisition costs.

It should be emphasized again here afterwards that Both the number of spars and the number of so-called meridians depend on the material that is to be treated with the sieve, the distance between the individual meridians being dependent on one another is expediently changed or changeable by the material to be treated »

The rotating separating and refining sieve, in particular for the preselection of solid urban waste, was explained in the above only as an example, and it Of course, all those modifications would still be possible which, in practical application, would prove to be should prove useful without deviating from the actual inventive idea.

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Claims (4)

U.104 claims: 1. Rotating separating and refining sieve, especially for the pre-selection of solid urban waste, characterized in that the ratio of the lungs to that on the outer jacket of the sieve provided openings to the width thereof is exceptionally large. 2. Rotating separating and refining sieve according to claim 1, characterized in that this consists of spars (ll) which run along the generatrix of the cylindrical body forming the sieve and from a series of meridians (12) attached to the spars, i.e. circumferential elements, consists. 3 · Rotating separating and refining sieve according to claim 1 and 2, characterized in that the meridians (12) are spaced apart from the spars (ll) or are attached so that they can be distanced, the distance between the individual meridians being close to each other The outlet opening of the screen can also be different. 609844/0859 '/ ο 1 b 1 ο ti 4. Rotating separating and refining sieve after one of the preceding claims, d a d u r c h marked that in accordance with the spars (11) conveyor blades (14) are provided which cover the spars and the material remove, these conveyor blades (14) so beiiiesa'-n are, da.3 their U-ifanf-; plus surface of the exposed Holmes is larger; as the greatest abmeysung a paper or}? Lastikf olle. 609844/0859 Blank page