US967637A - Rotary grate for gas-producers. - Google Patents

Description

E. HILGER. ROTARY (.TRATB FOR GAS PRODUCERS.

APPLIGATiON 11,111] DBO. 2, 1909.

0 1 9 1 mm 1 g u A d m H ,w a P ion ERNEST HXIJG'EBI, h DU'SSELD QRF, GERMANY.

noranr snare non easraonucnns;

Specification of Letters Patent. Patented Aug-u .16, 1%10,

application filed. December 2, was. serial No. 5230,9091.

whom it may concern:

To oll it known that l, Enivnsr HILonn, a

' citizen of the German Empire, and a resia ward]. oaenin zi r--za air plate (1 supported upon suitable brackets f all grate constructed in accordance with dent of Dusseldorf, Germany, have invented a new and Improved Rotary Grate for Gas- Producers, of which the followingis a specification. r

This invention relates-to rotary grates for gas producers and comprises more essentially a stellated hood crowning a similarly shaped base in such a manner that a down inlet is formed between said hood and base.

The accompanying drawings illustrate a this invention; wherein--- Figure 1 shows '11 vertical central section the lower part of the producer together with the grate, and Fig. 2 shows a top plan view of the furnace plate.

The gas producer a is provided at its bot tom. with a rotary grate which comprises essentially a coniform base f having a stellated head f. The latter is overlapped by a stellated slightly tapering spaced hood or in such a manner that a star-like downcontinuous passage is formed through which the air escapes in the direction of the arrows at (Fig. 1). Uwing to the peculiar shape of the air passage, an annular space 6 is swept by the air when the grate is rotated. The plate 0 projects considerably beyond the portion of the grate immediately below it, thus entirely preventingthe entry of the producer charge into the internal air-space of the grate, a defect common to all the various constructions heretofore made. The somewhat considerahle loss of fuel and the inequality in the air-supply,- which have resulted in the unsatisfactory working which has hereto-- fore resulted from the choking of the airspace are consequently both eliminated in apparatus according, to this invention.

In such apparatus the charge falls loosely to the line -h while the air can enter freely at d into the loosely-disposed mass.

wardly opening This invention moreover prevents fuel from burning up too rapidly to a great height at the center of the producer, and the too rapid gasification of the fuel at the edge of grate, as well as the burning away ofthis ed e. The Suppl of air is thus considerab y facilitated w ile the slay can moreover be much more easily removed than in other -not rotate continuously in the same direction in relation to the casing, but is moved forward through a certain determinate angle and then again backward through a fraction of this angle. This kind of movement considerably facilitates the descent of the loose slag and also facilitates the action of the projections of the furnace plate upon the compact accumulations ofslag, as, when t e laid are and caused to fall intothe ashpit, while the compact slag which adheres to the side of the casing, has tobear the weight of exposed to considerable pressure. When now the grate moves forward, it,'or more correctly speaking, its points or projections will first movethrough a space or clearance produced through the descent of the loose slag and will then come in contact with the compact slag with the result that the slag, which at the same time has to support the weight of the charge of fuel lying over it, is broken up, and especiall during the last rearward movement of the grate, detached by the points of the plate.

lfhe peculiar movement of the described results therefore first in the formation of a hollow space through the descent of the loose slag and secbndly in an attack on the coin act slag on the sides of the casing from t e one side during the rearward movement of the grate and still more'ener- 'getically on the some portion of slag from the other side during the subsequent forward movement of the grate. The movement of the grate and casing relatively to each other may in some cases be effected in such manner that the grate and casingboth move in opposite directions.

The peculiar movement of the grate already described may be effected by any suit able means. In Fig. 1; the grate is shown surrounded by a ring is which is provided lower edge, with which teeth there-mesh respectivelythe bevel wheels m and Z; these wheels being alternately brought into ongagement with the ring it lever 01 and s 2 r 2 l v In the example of apparatus shown in Fig. 1 of the drawings the reversal of the bevel movement of the rotary grate is shown as efthe charge lying over it and is consequently rate just with bevel teeth on its upper and on its by means of the being actuated through spur from fast and loose pulleys 0.

teeth together with the forward and rearward constructions especially as the grate does %:"ate moves backward the loose slag is fected by the manual operation of the lever n. This however is done only for the purpose of rendering clear the 0 eration of the apparatus. In practice it wi l of course be more advantageous in almostall cases to effect the reversal by automatic means in such manner that after the grate has been moved forward through a certain determinate angle in one direction itis moved backward to a lesser extent in the opposite direction.

lVhat I claim is 1. In a device of the character described, a rotary grate comprising a hollow base having a stellated head, and a spaced stellated hood that overlaps said head to form a star-like downwardly opening continuous air passage.

2. In a device of the character described, a grate comprising a hollow coniform base having a stellated head, a spaced stellated hood that overlaps said head to form a starlike downwardly opening continuous air spaced stellated slightly tapering hood that overlaps said head to form a star-like downwardly opening continuous air passage.

4. In a device of the character described, a rotary grate comprising a hollow coniform base having a stellatcd head, brackets on said head, and a stellated hood supported on said brackets and overlappii ig the head to form a star-like downwardly opening continuous air passage.

In testimony whereof I aflix my signature in presence of two witnesses.

ERNEST HILGER. [L.S.] Witnesses CIIAs. J. VVareirr, OTTo Rome.

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