DE15189C

DE15189C - Innovation in furnaces for burning pulverized fuel

Info

Publication number: DE15189C
Application number: DENDAT15189D
Authority: DE
Original assignee: J. G. MC. AULEY in Denver, Colorado, V, St. A

Description

KAISERLICHESIMPERIAL

PATENTAMTS·=PATENT OFFICE =

KLASSE 24/^Feuerungsanlagen.CLASS 24 / ^ combustion systems.

Auf beiliegender Zeichnung sind diese Neuerungen dargestellt. Fig. 1 ist ein; Verticalschnitt durch den Zuführungstrichter, der die Fortbewegungsschraube sichtbar macht, sowie" das Innere des Mühlenwerks und die Abfallröhren zeigt. Fig. 2 zeigt den Abfalltrichter nebst anschliefsendem Rohre in Verbindung mit dem Injector-Zuführungsrohr; zugleich sind' darin die Regulirungsklappen für die Brennmaterial-und Luftzuführung, sowie das in einem engen länglichen Querschnitt endende Mundstück des Zuführungsrohres sichtbar, durch das eine Verbreitung des Material- und Luftgemisches über die ganze Breite des Herdfeuers erzielt wird. Fig. 3 ist eine Ansicht des Mahlkörpers der Mühle und Fig. 4 zeigt das verbreiterte Mundstück des Injectorrohres zum Auseinanderstreuen des Materials. Fig. 5 ist die Ansicht einer Klappe oder eines Schiebers, der zur Regulirung des Zutritts von Luft oder Heizmaterial dient. Fig. 6 ist eine Ansicht des Zufuhrungsgebläses, · sowie ein verticaler Längenschnitt durch den Ofen. Fig. 7 endlich zeigt die Einrichtung des Verbrennungsraumes. These innovations are shown in the accompanying drawing. Fig. 1 is a; Vertical cut through the feed hopper, which makes the propulsion screw visible, as well as " shows the interior of the mill and the waste pipes. Fig. 2 shows the waste funnel together with the connecting pipes in connection with the injector feed pipe; at the same time are ' in it the regulating flaps for the fuel and air supply, as well as all in one narrow elongated cross-section ending mouthpiece of the supply tube visible through the a spread of the material and air mixture over the entire width of the hearth fire is achieved. Fig. 3 is a view of the grinding body of the mill and Fig. 4 shows the enlarged one Mouthpiece of the injector tube for spreading the material. Fig. 5 is a view of a flap or a slide, which is used to regulate the admission of air or heating material. Fig. 6 is a view of the feed fan, as well as a vertical length section through the furnace. Fig. 7 finally shows the arrangement of the combustion chamber.

A, Fig. i, ist der Trichter für die Zuführung des zu zermahlenden Brennmaterials. Derselbe kann die gewöhnliche Form haben und aus Metall, Holz u. s. w. bestehen. Dieser Trichter hat auf jeder Seite dicht über seinem Boden eine Oeffnung, durch welche die Drehaxe für die Fortbewegungsschraube B tritt; diese Schraube ist zur Hälfte mit Rechts- und zur Hälfte mit Linkswindungen versehen, um das Material nach beiden Seiten in die Trichter der darunter placirten Mühlen zu befördern. Durch eine auf der Schraubenaxe befestigte Stufenscheibe C" wird die Drehbewegung übertragen. D D sind die Axlager.
. EE sind zwei Zerkleinerüngsmühlen, deren Mahlkörper die Form eines abgestumpften Kegels haben. ; Das äufsere Gehäuse besteht gewöhnlich aus Güfseisen und ist mit Mahlflächen aus Stahl oder gehärtetem Eisen versehen'; ebenso sind die konischen Mahlkörper mit harten Mahlflächen ausgestattet. An den unteren Rand des äufseren Gehäuses F schliefst sich in der bekannten Weise ein Aufnahmetrichter G für das zermahlene Material an, der unten in einem Röhrstück H endigt und das Material in den Injectionsapparat / führt. Die Bewegung der Mühlen E E geschieht durch die auf den verticalen Drehaxen KK der Mahlkörper befestigten Riemscheiben J. LL sind Hebel, um die Mahlflächen von einander abzurücken oder einander zu nähern. Bei M sind diese Hebel mit dem Mühlengestelle drehbar verbunden. Von dem anderen Ende des Hebels, bei N, geht eine mit Gewinde versehene Zugstange nach aufwärts, die durch einen mit Muttergewinde versehenen Hebel oder ein Handrad O gehoben oder gesenkt werden kann. Dadurch werden die Axen der Mahlkörper gehoben oder gesenkt, söj dafs das Material zu gröberem oder feinerem Pulver verarbeitet werden kann. A, Fig. I, is the funnel for feeding the fuel to be ground. It can have the usual shape and be made of metal, wood, etc. This funnel has an opening on each side just above its bottom, through which the axis of rotation for the propulsion screw B passes; half of this screw is twisted to the right and the other half to the left, in order to convey the material on both sides into the funnels of the mills below. The rotary movement is transmitted by a stepped washer C "attached to the screw axis. DD are the axial bearings.
. EE are two grinding mills whose grinding media have the shape of a truncated cone. ; The outer casing is usually made of cast iron and is provided with grinding surfaces made of steel or hardened iron '; the conical grinding media are also equipped with hard grinding surfaces. In the known manner, a receiving funnel G for the ground material is attached to the lower edge of the outer housing F , which ends in a tubular piece H and leads the material into the injection apparatus /. The movement of the mills EE is done by the pulleys J. LL, which are attached to the vertical axes of rotation KK of the grinding bodies, are levers to move the grinding surfaces away from one another or to bring them closer to one another. At M , these levers are rotatably connected to the mill frame. Upward from the other end of the lever, at N, is a threaded pull rod which can be raised or lowered by a nut threaded lever or hand wheel O. This raises or lowers the axes of the grinding media so that the material can be processed into coarser or finer powder.

Man kann die Mühlen EE von dem Apparate trennen und sie an eine andere Stelle bringen, und z. B. durch einen Elevator oder andere Hülfsmittel das pulverisirte Material in den Zuführungstrichter A einführen, der es dann weiter durch G nach dem Rohre H befördert. Das Quantum des zugeflihrten Materials kann durch Aenderung der GeschwindigkeitYou can separate the mills EE from the apparatus and move them to another place, and z. B. introduce the pulverized material into the feed hopper A by means of an elevator or other auxiliary means, which then conveys it further through G to the pipe H. The quantity of the supplied material can be changed by changing the speed

Claims

the rotation of the screw B, which can be easily achieved by placing the belt on the stepped pulley C. In Fig. 2, the injection apparatus is shown. It consists of a metal tube which is connected to an ordinary fan, as shown in FIG. In this tube there is a regulating flap (or slide) R, which can be adjusted to determine the amount of air to be supplied. A similar flap R (or slide valve) is fitted in the tube H in order to be able to regulate the supply of the powdered fuel. At some distance from the first flap the air supply tube is narrowed, and this narrowed part S extends beyond the point where the tube H joins the air supply tube, Fig. 2. This is done for the purpose of more intimate mixing of To effect air and fuel and prevent the latter from being forced back into tube H. If necessary, the air should be introduced into the top of the funnel G. The vacuum created by the injector tube / creates a stream of air going through the mill E, the funnel G and H. The end of the injector tube is wide and narrow to properly spread the material over the fire, as shown at T in FIG. The injector tube / can also open into the hearth at an angle so that the air and fuel mixture sweeps over the sunken floor close to the fire bridge. U, Fig. 3, shows a surface of the grinding media made of steel or hard iron, which can be ribbed, serrated or otherwise made rough. R, Fig. 5, is the regulating flap, which consists of a round thin iron plate and is rotatably mounted in the tube by means of pins; it can be adjusted from the outside by means of a handle. /, Fig. 6, is the injection tube with the fan connected to it. V is the hearth wall and W is a floor that sinks towards the center from the front and back. . This soil falls near the confluence of the funnel to its middle and rises from here to the fire bridge. At the lowest point of the combustion chamber there is an opening X through which slag can be conveyed out. This opening can be closed in any way. Y is the combustion chamber. Z is the fire bridge from which the hearth falls to both sides. The purpose of the lowering of the floor in the combustion chamber is to prevent unburned fuel from collecting in the corner formed in the other case by the floor and the fire bridge. Fig. 7 shows a double combustion chamber. You can see the openings XX and the two injector tubes /. Between the junctions of these two tubes there is a partition wall that tapers towards the rear and consists of refractory stone and extends from the floor to the ceiling of the furnace. This partition ends just before the fire bridge at Z '. On the side of the two mouths of the tubes / there are walls made of refractory material extending from the end wall to the side walls of the furnace, which also end near the fire bridge at Z ". With this device I rule out the possibility of an accumulation of unburned heating material in the My stoves function as follows: Charcoal or other fuel is introduced into funnel A and, by turning the propulsion screw B, into mills EE; in the mills this fuel is processed into a coarser or finer powder, then ends up in waste funnel G. and through the tubes H into the injector tubes I, in which the powder is mixed with air and conveyed into the hearth fire by the air flow generated by a suitable fan the hearth of the combustion chamber a fire made of wood or other fuel material created. Patent claims:

1. The apparatus for introducing a mixture of air and pulverulent fuel into the hearth, consisting of the feed funnel A and screw B, the mills EE, the air feed pipe with the narrowed part S, which extends up to the point where the fuel feed pipe H joins extends.

2. A combustion chamber with a wedge-shaped to the rear, between the injection tubes / arranged wall and side walls that are close to the injection tubes from the end wall of the The combustion chamber extend obliquely towards the side wall of the same and end close to the fire bridge to thereby prevent an accumulation of unburned fuel in the combustion chamber.

1 sheet of drawings.