DE82744C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 82: Drying devices.

Patented in the German Empire on February 20, 1894.

The innovation on our multi-storey kilns with blinds is a special one Type of application of direct firing. Those mixed with cold air and freed from crying Heating gases are not passed through the Darrgut, but directly from the The hot air room is passed into each of the individual drying chambers lying one above the other in such a way that they the Darrgut up on the whole area and, as far as it the blind spaces or. Allow the holes or slits in the louvre rods to be smeared at the bottom as well. To quickly Removal of the fumes and vapors produced during kilning as well as the smoke of the heating gases serves the further arrangement, the same zigzag from the lowest kiln chambers to divert upwards into the chimney, for which purpose one alternately at the end of a horde The blind rod is omitted in such a way that circulation openings at the relevant points arise through which smoke, fumes and vapors on their way into the chimney can pass through. The Darrgut is emptied from one horde to the next lower level and here by a special kind of position of the blind rods after opening the blind turned at the same time. The opening of the blinds of the hordes is done in the simplest way by caused by pulling on wire pulls at one point. If the trains are released, so the blinds close automatically.

In the drawing, the new multi-storey kiln is shown in FIGS. It shows the

Fig. Ι and 3 each a vertical section through the kiln,

Fig. 2 is a vertical view,

4 is a partial vertical view and FIGS. 5 and 6 are horizontal sections of the furnace.

Figs. 7 to 1 1 illustrate somewhat Drawn to a larger scale, the blinds' north or the perforated blind rods and the device for opening BEZW. Closing the blinds.

Above the direct furnaces bb , two gable-roof-like coverings B made of refractory material and provided with a rear wall are arranged in a known manner, in such a way that the heating gases are forced to go downwards into room C in order to mix with the cold air there, which is supplied from the outside through adjustable channels. At the same time, on the rear walls of the coverings B, the repelling of the call that accumulates on the floor of the room C takes place .

The heating air, freed from the call and mixed with cold air, rises through the approx. 12 to 15 cm narrow slits between the oven A and the coverings B. The latter have the further purpose of preventing the smaller ones from falling through the holes or slots in the blind rods or Parts of the kiln falling through the chute fall into the furnace.

Above the furnace covers B there is a gallery D about 30 cm wide, which is intended to catch the kiln material falling near the furnace walls and to force the hot air to move away from the side walls

the middle of the oven to pull. Above this gallery D an inclined, perforated slide K is arranged in order to convey the finished Darrgut through an opening k to the outside.

^{The drying chambers F to F 6} , which are arranged between two equal distances from each other and made of perforated sheet metal, are in direct connection with the hot air chamber through drafts F to F ⁵ and individually by omitting one alternately, now on the left and now on the right Blind rods e each connected at the end of a horde in such a way that a rapid circulation and escape of the developing vapors and fumes is achieved thereby. For the latter purpose the smoke produced as a result of direct firing is of particular advantage as a vapor carrier; Smoke and vapors escape through a lateral, underneath the uppermost unperforated closure resp. Chimney opening, which is provided with an adjustable flap, into the chimney a.

With regard to the blind horde E it should be noted that the blinds in one horde, when opened, are slightly inclined to the right instead of vertically (see Fig. 8 above), in the next horde after opening they are so much inclined to the left and so further, alternately now to the right, now to the left, so that the dry matter is turned alternately, now to the left and now to the right. In order to prevent the kiln heap from falling through the connecting channels when the kiln trays are turned, vertical, upwardly curved plates ο and above the same deflector ^{plates o 1} are arranged at the respective ends of the kiln shelves, the latter of which the kilned material falls onto the lower shelf from deflect the circulation opening, while the metal sheets o, to which the adjacent blinds cling, prevent the material from falling off to the side.

^{In the uppermost Darrhorde F 6, which} is below the feeding tray G , the connecting channel is located in the wall of the furnace itself, namely opposite the flap leading to the chimney, for the purpose mentioned at the beginning. No heating ducts F lead into the space above this shelf F ⁶ because the heat escapes too quickly into the chimney.

In the drawing Fig. 3 is also omitted in the lowermost Darrhorde E at one end a blind slat e, to reinforce the already partly caused by the channel F Circulation still for the purpose.

The individual perforated blind bars e of each rack F are rotatably mounted at the end in two cross bars m by means of their continuous bars / ¹ , which pass through angle irons / fixed to the blind bar. The rods / ¹ carry small cranks t at one end, all of which are connected to each other by rods ρ. If one crank t is turned, all others and with them the blind rods c turn by the same angle. This turning is brought about by passing one of the rods / ¹ through the furnace wall and attaching an inclined lever L on the outside, which carries a counterweight at one end and is connected to a wire pull / at the other end. When the blind is closed, the inclined lever is positioned so that the one end weighted with a counterweight looks down. If the wire pull / is tightened, all bars / 'are rotated, i.e.: the blinds open. When the wire is released, the counterweight on lever L causes the blind to close automatically. Each rack receives such a lever L, which is actuated by appropriate wire pulls /.

The Darrprocefs works in the following way:

The Darrgut is inserted into the object located above the tray space G A ¹ and piled up on the top, non-perforated tray G blind. From this horde, which, like the rest of the perforated blind hordes F to F ⁶ , is pulled individually by means of special levers L to U through the cords Z to V respectively. can be emptied, whereby the turning of the product takes place at the same time, the Darrgut takes its way in the opposite direction to the flow of heating gases from one tray to the next lower one, etc., until it emerges from the lowest tray E on the inclined chute K out of the kiln A ;

The hot air is brought to the desired temperature in the heating air space C by means of appropriate mixing of the fire gases with cold air supplied from the outside. For this purpose, slides or flaps are attached to the supply channels c for the cold air and there is a pyrometer outside the furnace, on which the temperature inside can be read; To regulate the supply of hot air to the individual kiln chambers, the KaUaIeFF ¹ F ² etc. are also equipped with regulating slides or flaps in such a way that the temperature level in each individual kiln chamber can be regulated.

The main advantages of our new kiln are as follows: Great savings in fuel by direct firing, in that the hot air currents produced are controlled by flaps or slides only after their heat has been completely transferred to the material to be dried and saturated

Claims (1)

with the fumes and vapors of the same escape into the chimney. The drying of the material to be dried takes place more quickly and more evenly by opening the shutter hurdles remain uniformly covered with dry material throughout, and the heat from the direct adjustable heating flues is evenly distributed everywhere and the interior of the stove is unaffected from cold or heat from wind and weather. Patent claim: A multi-storey kiln with blinds and direct firing, in which the heating gases are fed individually and directly to each kiln room (E) through shaft-like channels (F). For this purpose ι sheet of drawings.