DE345238C - Method and device for improving the effectiveness of stone bed setting machines - Google Patents

Description

Method and device for improving the effectiveness of stone bed setting machines. In coal processing, setting machines with a special stone bed have the Advantage, i.e. if they ate, they drain the heaviest mountains at once, so that they do not have time have to dissolve, which is disadvantageous due to an increase in the ash content of the fine coal would be. On the other hand, they have the disadvantage that, if as before, all mountains be drained through the stone bed, the same must be laid thinly around the easy mountains to get out as well. In this case there is a lot of coal going through the thin stone bed and as a result of the suction effect of the setting stroke and therefore "lost: To achieve. Improvements are made according to the invention of the stone bed so strongly placed that the heavy, dissolvable mountains probably come off through it, but the light, insoluble mountains remain above it and by means of a special discharge device above or immediately behind the stone bed be, with a layer of light mountains being suitably kept above the stone bed is to avoid coal losses through the suction of the setting stroke .: With this arrangement it is necessary for the bed to work easily at discharge, to avoid accumulation of light mountains here and a good effect of the discharge device to achieve. To achieve this, the bed is divided into sections by a dam divided and provided only those closer to the discharge with the stone bed, whereby the There is a sieve in this section on a large, perforated sheet metal, for drainage the heavy mountains. The other department has in order to. Achieving a weaker one It is advantageous to use a sieve with a narrower perforation and either with a correspondingly heavy stone bed, which also drains mountains, burdened, or the very heavy mountains are deposited there.

The same effect can also be achieved by arranging them with holes to different extents Sheets alone or in conjunction with wire mesh as a set carrier as a result of the the various water resistances caused thereby.

Attempts have been made to achieve a similar effect by that first heavy mountains in such a department, the machine by means of a stone bed were withdrawn, whereupon the goods were washed in the following departments without a stone bed should be. However, this method of working was unreliable because it was unavoidable was that stones of the stone bed and heavy mountains with in the following departments and above the stone bed there was no permanent mountain bed for protection. against Loss of coal was left by the suction of the setting stroke. This disadvantage is in the method used here of lowering the light mountains above or directly behind the stone bed and leaving a protective layer of mountains above it - A kind of discharge device is advantageous for lowering the light mountains used, in which .these light mountains are initially in one, spaces between two partitions accumulate, here by a countermovement of the Water will be retained and in this way the material on the bed will Keep balance while only the excess goes off.

To lift the stone bed and the heavy mountains, but still the beneficial effect of the mild setting stroke above the stone bed, especially at discharge, to achieve, the arrangement is made that the setting stroke is sometimes energetic, sometimes mild, or alternating strong and weak settling strokes. Because of the energetic stroke, the whole bed becomes. especially on the drive side, raised, while the mild stroke works more in the department before your discharge. By adjusting the strength of these effects there is an adjustment to the strength of the Operation of the front and rear side of the bed possible.

Exemplary embodiments are shown in the drawing. According to fig. i is the set bed thanks to the advantageously adjustable dam a, which runs across the Setzgutträger is arranged, divided into departments I and I1, the department TI with a larger perforated sieve or .mit a wire mesh or the like. As a load carrier is provided, which is covered with a correspondingly strong stone bed b, by which the heavy mountains from - ("- just. The sieve of Division I is to to achieve greater water resistance, appropriately punched more closely and also with a new stone bed or with the heaviest mountains, which are omitted with the coal, accordingly fingered more heavily than department II. The light ones remaining above the stone bed Mountains finally get into space d of the discharge device and stop here balance with the material on the bed. The disposal of their excess will regulated by the movement of water f. When the water is lifted, the mountains become held back in space d, when it sinks, the excess is retained by the also declining Water movement washed away from it.

With this arrangement, especially when it comes to heavy mountains draining stone bed also extends to the deposition room (1, the deposition of heavy mountains in space d, which would otherwise denote the light mountains Would relocate the exit route there. Only then does the usability of the discharge t direction and 'the desired independent regulation of the mountain exit without the previously usual throttling effect achieved. This type of discharge device is also an excellent means, do the even draining of the light mountains above of the stone '@' bed without loss of coal and achieve even work and load condition of the machine and a stable Tergebett above the stone bed to obtain.

Another great advantage of this type of discharge device is that at the point of departure of the light mountains behind or above (stone bed do not learn bars and the like are necessary to hold back the stones of the stone bed, which clog and interfere with the good operation of the machine.

In order to achieve the partly intermittent, partly mild setting impact, are two air inlet sliders g and 1a provided, the adorned strongly pressed and on it Admit weakly compressed air. As a result, at first intermittent (read the whole bed, especially on the drive side. The subsequent weak effect but extends mainly to the material of the department, liung Il about your Stone bed. Since the shock effect is only brief, but the mild effect is longer, becomes achieved that the actual settlement effect and thus the consumption of the settlement water mainly takes place immediately before the discharges, with which the desired overall effect is achieved.

The different effects of the setting stroke can also be caused by the throttling effect the air, by corresponding piston movements or by partly strong and partly weak setting stroke can be achieved.

Fig. 2 shows the same arrangement, with! but who a omitted the dam and - to make it easier to work on the discharges in department I. a tightly perforated sheet metal is used as a seed carrier. In Department II is a wide perforated sheet metal with lower water resistance and placed in section III Wire mesh that offers almost no water resistance, arranged.

Fig. 3 shows a device for coarser material, in which a stone bed is not usable. It is advantageous in its place a drain device s or a drainage opening h for the removal of the heavy mountains and to avoid them a space d is provided for the deposition of the mountains.

The overall result of the innovation is a more reliable, adjustable one Working method of the settling bed, automatic regulation of the descent of the mountains, avoidance of coal losses and better settling effect, especially at the discharges.

Claims (1)

PATENT CLAIMS: i. Process to improve the effect - of stone bed setting machines, characterized in that the above Stone bed remaining light mountains by means of a special discharge device above or directly behind the: stone bed to be drained and a protective layer of mountains over your stone bed is held. At. the side opposite the discharge can .the bed Sieves offering special water resistance lie or the seed carrier through Damming a thick stone or mountain can also be heavier the Selzanhub is partly intermittent and partly gentle. Setting machine for execution of the method according to claim r, characterized by the use of wire mesh or more perforated sheets on the discharge side of the setting bed than the setting material door older or application of a dam (a) across the settling material carrier, in front of which there is a A heavy stone or derbel bed in order to achieve an easier way of working of the bed at discharge. 3.- Jigging machine for carrying out the method according to Claim z, characterized by the arrangement of several slides or throttle devices in the compressed air inlet organ, which have the purpose of keeping the compressed air at the Setzanhuh for a short time act weaker in higher voltage and during the rest of the setting stroke to let, nvecks achievement of a partly intermittent and partly gentle setting effect. 4. setting machine for performing the method according to claim z, characterized by the use of a known discharge device for discharging the light Mountains above or immediately behind the stone bed, which consists in that the mountains only in a special Austragraram (d), on which also zweclanäßig the stone bed (h) expands, damming up and the goods on the bed balance hold and flush the stone bed and the mountains from this room by simultaneous Raising the water in the mountain exit room (f) - and - deposit rarities (ri) or other Devices are avoided in order to maintain the uniform load condition of the settling bed and the maintenance of a stable and to achieve a uniform mountain above the stone bed. 5. Setting machine for Execution of the method according to claim r; characterized by the application of a special drainage device (s) or a drainage opening (k) instead of the stone bed (ti) for draining the heavy mountains from the bed and from the discharge space (d).