US1037480A - Charging device for furnaces or gas-generators. - Google Patents

Description

w. HOELLER. CHARGING DEVICE FOR FURNACES 0R GAS GENERATORS.

I APPLICATION FILED DEO.13, 1911.

1,037,480. Patented Sept. 3,1912

wILnnmlt .HOELLEB, or ooLoenn-nnnnnrnnn, GERMANY.

GHARGIN G DEVICE FOR FURNACES OB GAS-GENERATORS.

Specification of Letters Patent.

Patented Sept. 3, 1912.

Application filed December 13, 1911. Serial No. 665,543.

To all whom it may concern:

Be it known that I, WILHELM HOELLER, a German subject, residing at No. 42 Forsterstrasse, Cologne-Ehrenfeld, Germany, have invented new and useful Improvements in Charging Devices for Furnaces or Gas-Generators, of which the following is a specification.

My invention relates to the charging devices of furnaces or gas generators, and it has for its object to provide efficient means for distributing the charge when supplied to the furnace or the generator, the distribution being such that an intimate mixing of the charge shall take place even in case the charge consists of pieces of unequal size. According to the invention this is obtained by means of a distributing ring of special construction which acts in conjunction with a retarding of the outflow of the charge, as will be fully understood hereafter, and with a cone for determining the direction of movement of the charge.

It is to be understood that there are already charging devices which by means of a distributing ring throw the material toward the middle and the circumference of the furnace or the generator. With these known devices the distributing ring is either in the form of an inverted truncated cone or is of cylindrical shape. Both arrangements present the following disadvantages: If the charge consists of equally-sized pieces then the largest portion thereof will during the first period of distribution be thrown by the distributing ring toward the middle of the furnace, while during the second period, 2'. e.

- when the charge will no longer strlke against the distributing ring, the largest uantity thereof falls down at the circum erential wall of the furnace. Hence the material is not distributed equally,but will be stored up in the middle and at the circumferential wall, whereby the furnace or generator will be irregular in its action and poking be rendered difiicult. If with such known devices unequally-sized pieces of material are employed, such, for instance, as the rough coal commonly used for generators, the distribution will be still more disadvantageous. In such case, during the first period of distribution the fine-grained material falls almost vertically from the lower edge of the distributing ring, while the coarse-grainedmaterial is thrown toward the middle of the furnace. During the second period of distribution, 2'. 6., when the material no longer strikes against the cone, the smallersized pieces of material fall from the distributing cone substantially in a vertical direction, that is to say, toward the same annular space, approximately, to which also during the said first period the fine-grained material is supplied, while the larger pieces of material are thrown toward the circumferential wall. Besides the fact that the fine material renders the inner surface of the furnace uneven, the larger pieces are stored up in such case in the middle and at the circumferential wall, while around the middle there is always a ring of smallersized pieces of material, which provides a less eflicient passage-through for air than the coarse-grained material. From this not only results an irregular action in the case of generators, for example, but also the stored up fine material is not completely galsified, the largest portion getting lost as co e.

The present invention is to avoid such inconveniences.

The accompanying drawing shows a vertical section of a form of construction embodying my improvements.

' a denotes the lower portion of a filling trunk of the kind common with charging devices. At the lower portion of such trunk there is a hopper b for the outflow of the material. The outlet 0 of this hopperis adapted to be closed by a cone d. The diameter of the outlet 0 is narrowed over the diameter of the trunk a to such an extent that the outflow of the material is retarded in such a manner that during the whole time the cone d is moving downward there is always an outflow of material from the trunk. Owing to this means as well as to the height from which the material falls onto the cone d moving downward the power by which the material strikes against the cone is continuously increased. The consequence of this is that also tlie angle by which the material is reflected from the cone is continuously increased. The distribution is effected by a distributing ring e the inner surface of which is so curved that the material reflected from the cone and striking against it in the positions the cone successively assumes,.is each time thrown in another direction into the furnace.

The device acts as follows. With the position marked I of the cone d the material begins to flow from the outlet 0. The material at first has no falling power but slides down the cone, when it acquires a certain falling power. To utilize the latteras far as possible, in order that the material may be thrown by the distributing ring beyond the middle of the furnace, the material, as shown by the arrow line 1, first strikes against a wall made in the form of a truncated cone. The material striking against such wall at an acute angle, its falling ower is not decreased essentially. It is re ected at the same angle against a wall made in the form of an inverted truncated cone, and falls therefrom at the same angle, without its falling power being essentially diminished, into the interior of the furnace and beyond the middle thereof. With the position II of the cone the material arrives on the cone with a certain falling power and thence, as indicated by the arrow line 2, on the wall made in the form of an inverted truncated cone. Owing to the almost vertical direction in which the material strikes against such wall it loses its falling power, but when sliding along the inclined surface the material experiences an impulse toward the middle. The drawing indicates the mannor of the further distribution by the positions III, IV, V, VI, and VII of the cone as well as by the arrow lines 3, 4, 5, 6, and 7 the material being reflected from the distributing ring 6' each time in another direction. Also in the case of diflerent-sized ieces of material the fine-grained material will not tend to collect at a spot, because a point that in the present moment receives fine material will in the next moment receive coarse-grained one. Thus, for instance with the position I of the cone d the larger pieces of material fall beyond the middle. The smaller pieces describe a shorter way;

they are thrown substantially toward the middle. This point, however, in the next moment receives larger pieces of material, owing to the position III, and so on. With the position VII of the cone d the force with which the material arriving from the outlet 0 strikes against the cone d is so great that the finer material, though a little portion thereof be thrown against the distributing ring e, falls farther outward. As indicated by the arrow line 7 the change brought about by the distributing ring e in the direction in which the larger pieces of material tend to fall serves with the lower positions of the cone to mix these larger pieces with the fine-grained material arriving from the same position of cone as the former.

It is to be understood that changes in the form, proportion, size and the minor detailsmay be made without departing from the spirit or sacrificing any of the advantages of this invention.

What I claim is:

In a. charging device for furnaces and gas generators, in combination, a vertical filling trunk having a narrowed outlet, a cone adapted to be displaced vertically below such outlet. and a distributing ring located below the outlet and having an internal periphery curved vertically to present an annular ridge by which the material falling thereon is directed into the furnace in a different direction for each position of the cone, substantially as set forth.

In witness whereof I have hereunto signed my name this 27th day of November 1911, in the presence of two subscribing witnesses.

WILHELM HOELLER.

Witnesses:

NIooLAs HAHN, LOUIS VANDORY.

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