DE971727C - Feed chute for feeding heavy liquids and feed material into the separating bath of sink separators - Google Patents

Description

Feed chute for feeding heavy liquids and feed material into the separating bath of sink separators The invention relates to a feed chute for feeding of heavy liquid and feed material in the separation bath of Sinksdheidern, whereby the Feed chute has an intermediate sieve floor through which the heavy liquid excess from the feed, is pulled off well, so that the wetted feed material on the sieve shelf and the heavy liquid excess below it on the bottom of the feed chute gets into the separation bath.

The . impurities contained in the feed material and dusty Components require ongoing cleaning of the heavy liquid, so that the Bath continuously larger amounts of heavy liquid can be removed and fed back have to. This heavy liquid is either mixed with the feed material in the bath or fed separately from the latter. In the first case it caused the in the bathroom heavy liquid flowing in uncontrollable currents and eddies in the Zones in which the task is, well, so that of a static, only the separation subject to gravity no longer can be spoken of. Particularly the finer fractions, namely both the floating material and the sinking material, preferably follow the one through which one is flowing Heavy liquid im Bad caused currents and easily get between the. Products that they don't belong.

If the heavy liquid is supplied separately from the feed material, the Currents caused by the latter in the bathroom can be controlled. The task However, it gets into the separating bath unwetted, so that the air bubbles adhere to it the actual weight of the fine-grained components distort. Therefore, special facilities are required to mediate them the feed material is wetted beforehand. So has already been proposed, the task Before introducing it into the separating bath, rinse with water and then, in order not to To put too much water into the separating bath, to dry it on a draining sieve. Of the effort required for this. however, it is considerable. It is also known to the Only add part of the heavy liquid to the feed material and separate the rest to be introduced from the feed material into the bath: Here, however, it is excluded on the one hand to achieve sufficient wetting of the feed material and, on the other hand, to strong heavy liquid flows in the area of the feed material floating in the separating bath to avoid.

A proposal has also become known. after which the feed is given together with heavy liquid in a feed. On a sieve part this feed is separated before the mixture enters the separating bath of heavy liquid and feed material instead, so that both staffies are separated from each other enter the drum separator. However, it was not recognized that the Type of supply of the withdrawn heavy liquid for the success of the process is decisive, so that with the previously known method rather with a deterioration than with an improvement in the separation result. is to be expected. The in, the bathroom incoming liquid intensifies the flow to the known method. Float discharge and thereby sets the dwell time that is critical for the separation process in the separation bath significantly.

However, the disadvantages outlined above can be avoided if at the feed chute according to the invention for influencing: the direction of the in the separation bath. entering heavy liquid stream at the end of its inclination adjustable sieve intermediate floor a steering plate and / or at the end of the floor : a steering plate is provided for the feed chute. So you can do the one for the separation Set the most favorable flow path easily and precisely. It is thus possible arbitrary amounts of border grain (Mittelgut) consciously in the coal or in the mountains drive and to measure the aesthetic content of the products according to the requirements.

`In the drawing is an embodiment of the subject matter of the invention shown in carving.

A feed chute opens into the separator trough i of the sink separator 2 for the feed material and for the heavy liquid to be fed to the separating bath in the separating trough. The feed chute 2 has an intermediate sieve floor 3, which is preferably on the floor 4 of the chute is articulated and adjustable in its inclination. At the end of Intermediate sieve base 3 is attached to a guide plate 5, which extends downwards in front of the outlet cross-section the feed chute extends below the intermediate sieve floor. The steering plate 5 - is articulated at the end of the sieve shelf and adjustable at any angle. Another guide plate 6 is hinged to the end of the bottom 4 of the feed chute. This steering plate 6 is also adjustable in any inclination. Above the feed chute showers 7 are arranged for supplying the heavy liquid.

The incoming feed material in the feed chute 2 is through the Shower 7 added the heavy liquid to be fed to the separating bath. The amount of fluid from the Sahwer is usually large enough to ensure thorough wetting of the feed material. Otherwise, it can be of any size, taking into account good wetting will. While the mixture of feed material and heavy liquid over the sieve false bottom 3_ flows, the excess heavy liquid passes through the sieve bottom, see above that only the wetted task, -gut at the end of the sieve shelf and in its direction gets into the separation bath. The excess heavy liquid withdrawn from the feed material flows downwards at the bottom 4 of the feed chute and occurs below the feed material into the separation bath.

By adjusting the inclinations of the guide plates 5 and 6, the heavy fluid flow can any direction in the separation bath can be given. Also his .speed can be changed for any flow direction in that the lower Trailing edges of the guide plates 5, 6 are more or less approached to one another. Finally, it is also possible by appropriately approaching the lower exit edges to throttle the heavy liquid flow as much as desired, so that an arbitrarily large Part of the liquid above the sieve shelf with the feed material enters the separation bath to there with appropriate setting of the inclination of Siebzwi.schenbodens 3 to act as a directed tram stream for the feed.

The heavy liquid flow can be guided around the separation zone T of the separation bath through the guide plates 5, 6 in the arc a. so that it cannot exert any harmful influence on the static separation process. Depending on the arrangement of the heavy liquid outlet openings in the separating trough, an upward or downward flow can then be implemented in the separating bath in the area of the discharges for the floating material or the sinking material, depending on its strength and direction any part of the boundary material (medium material) into or into the floating material the sinking debris drifts.

Claims (2)

PATENT CLAIMS: i. Feed chute for feeding heavy liquid and feed material into the separating bath of Sin: Kscheidern, the feed chute having an intermediate sieve bottom through which the excess heavy liquid is drawn off from the feed material, so that the wetted feed material on the sieve vischen floor and the heavy liquid excess underneath it on the bottom of the feed chute into the Separating bath, characterized in that a guide plate (5) and / or at the end of the floor, the feed chute, a guide plate (6) is provided to influence the direction of the heavy liquid flow entering the separating bath is. 2. Device according to claim i, characterized in that the guide plates (5, 6) are independent of one another are adjustable in their inclination. Publications Considered .: British Patent Nos. 704474, 724854; German patent application S 37353 VI / i c (made known on the 2nd 1. 1955)