DD154069A1 - DEVICE FOR CLASSIFICATION OF METAL SPARE SCRAP AND HETEROGUE SHOE - Google Patents

Abstract

The invention relates to a device with the for hooking and clogging prone heterogeneous Schuettgueter, such as Metallspaene, Draehte, Muell u.a. be classified trouble-free at high Trennschaerfe. With this device Schuettgueter containing ingredients that can get caught while passing through a Siebflaeche be graded continuously without additional manual effort and without auxiliary devices. According to the invention, d. Task thereby solved that as Siebflaeche a suitable bar grate from transversely to the direction of flow of the Schuettgutes arranged movable and rotatable rods is inserted into a vibrating screen. This rust is set in vibration. Optionally, grates can be arranged in several levels. The invention can be applied to the classification of metal sheets, wires, garbage and other difficult to classify heterogeneous Schuettguetern.

Description

Device for classifying metal chip scrap and heterogeneous bulk materials

Field of application of the invention

The invention relates to a device for classification, which is suitable for hooking and clogging prone heterogeneous bulk materials, such as metal chips, wires, garbage u. a. to classify without interference at high selectivity.

Chemical processes, such. B. Eisenoxidsynthesen, in which metal chips are used, the separation of sand, dirt and loose rust fractions and, in order to ensure favorable flow conditions, the separation of Peinanteils, which consists of short metal shavings and shavings ·

These components settle or clog the void volume, increase the flow resistance and are introduced into the final product, so that a classification is necessary ·

In the crushing of chip scrap, garbage »wires u. Ä. The crushers require a lot of energy and are subject to heavy wear. Therefore, the small

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lumpy portion "which does not need to be crushed, sifted out of the heap. In particular, in the separation of garbage and chip scrape downstream of the screening aggregates can be used more effectively, as by the separation of the heap a targeted application of the principles of action is possibleβ

Characteristic of the known technical solutions

It is known "that in order to classify certain grain sizes or pieces of lumpy goods vibrated sieve devices are used." In the elastic vibrating sieve frame of the screening device while at least one sieve tray is firmly clamped, which is designed differently depending on the application, such as, B » as wire mesh, perforated plate, harp screen u »a · and of different materials such as sheet metal» wire »rubber, plastic u. a "can exist" Due to the different choice of the shape and the material properties of the screen fabric surface, an attempt is made to counter the specific screen difficulties.

Another example is elastic sieve bottom, which are designed so that the elements of the same relative oscillations to each other. As a result, the mesh should release itself.

In this case, it is assumed that the screenings correspond to a grain cluster and can be characterized by an equivalent diameter distribution despite different geometric shapes.

So z. B, in the patent 212577 the screening machine and the sieve bottom designed to handle the difficult screenings, z. B, sand, with a critical humidity of 8 % can be screened properly.

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-In contrast, heterogeneous clusters, such. As .Metallspäne, wires and refuse characterized in that the proportions and shapes of the individual Haufwerkbestandteile are extremely different, that the dimensions of the individual Haufwerkbestandteile can have enormous differences, that the heap of different materials may consist (chips, sand, rust, glass etc.) and that hooking parts are contained in the heap. Metal chips z, B. have thickness dimensions of about 1 mm and length dimensions of 0 to about 1000 mm, form helical shapes, get caught and wedged and can only be roughly classified according to the outer dimensions.

The classification of heterogeneous aggregates is extremely difficult and only possible by high manual effort »In the journal" Processing Technology "(Y / iesbaden) No. 5» 1969 (p 245 ff), the statement is made that perforated plates are better than wire mesh, to classify heterogeneous aggregates, but by wires u. Parts are clogged and require constant supervision »

In the same journal "Processing Technology" No. 4> 1970 (page 200 ff) it is estimated that the random nature of the heap components make a normal sieving less promising. As auxiliary measures of the mechanical screening auxiliary devices are described, such as. B. the debris loosening fingers, fangs, Umwälzarme, scraper, which are subject to very high wear, require a high energy demand and do not prevent blockages in the long run, as this z. T. hooking parts are pressed into the mesh

Sieve machines with Siebgewebeflächen, according to Auslegeschrift 2732892, do not meet the requirements of a heterogeneous heap with hooking parts and clog after about «1 hour operating time ·

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Object of the invention

The object of the invention is a device for interference-free classifying of heterogeneous bulk products, in particular metal chips · Scattered heterogeneous bulk material, such as metal chips or wires ^r or u waste. ä <> with hooking properties that irreversibly clog conventional sieve plates after a short time and that can not be separated by a separation of weight or only with considerable effort, are by means of a continuous device without additional manual effort, without auxiliary devices such as Abblasungshilfen, circulating arms u · ä · be classified, with a simple constructive principle is to choose and the device requires only small space requirement may ·

Presentation of the Invention

The invention has as its _object} to provide an apparatus for classifying metal chips and other bulk materials ·

According to the invention the object is achieved in that a suitable bar grate is arranged transversely to the flow direction of the bulk material movable and rotatable rods in a vibrating screen as the screen surface. This rust is set into vibration, as well as grates can be arranged in several levels.

The grate bars are to be adjusted in diameter and distance to the classification conditions. Furthermore, the. and the imbalance of the classifier are changed. In contrast to conventional sieve bottom find metal chips u. Ä. No approach to Pesthaken and clasping and the random z. T. counter-rotating and swinging movements of the grate bars solve clogging parts, so that through these-

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se device prevents clogging of Siebbelages and ensures a good separation effect ·

embodiment

For classifying steel chip scrap at 10 mm, the classifier is equipped with a 1 bar grate. The bar grate is made of steel tube 2 (42 mm outer diameter). · The steel tube is freely movably arranged in a rubber holder 3. · The distance between the steel tubes is about 25 mm »The vibration is generated by two unbalance vibrators 4. It acts perpendicular to the sieve surface ·

Steel shavings could be classified at 10 mm cutting grain size · The throughput is max. 8 t / h · With good selectivity, trouble-free operation without clogging of the bar grate could be guaranteed ©

Claims (1)

invention claim Device for classifying metal chip scrap and heterogeneous bulk materials characterized in that one or more bar grates are set into vibration from movable and rotatably mounted bars arranged transversely to the flow direction of the bulk material, For this 1 page drawings