DE6605305U - DEVICE FOR PRE-HEATING WASTE IRON - Google Patents

Description

Patent attorneys Dipl.-Ing. EWeickmann,

Dipl.-Ing. H.Weickmann, Dipl.-Phys. Dr. K. Fincke Dipl.-Ing. R A.Weickmann, Dipl.-Chem. B. Huber

8 MUNICH 86, DEN

PO Box 860 820

MÖHLSTRASSE 22, NUMBER 48 39 21/22

Engineer Gunnar Schjelderup, Industriovner, Nydaisveies. 21, Oslo 4, Norway

Device for preheating scrap iron

The innovation "refers to a device for Preheating of scrap iron. This device contains a hopper that is placed on a carrier and which contains an upwardly pivotable closure cap. In this closure one or more burners for powdery, ga ^ iform or liquid fuel are provided.

If scrap iron is to be preheated, it is poured into the oil bucket, which is then conveniently placed on a suitable carrier which is provided with an outlet for combustion gases. Then the final disgust on the I ¹ UlI bucket put on, and then flames are directed into the relevant Püllkübel from the aforementioned burners.

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When the scrap iron has been preheated to the desired extent, the fuel supply is interrupted. Then the cap is lifted, and the bucket is lifted with the help of a crane over a furnace to be filled. The filling bucket has a bottom part that can consist of a number of items that can be swiveled away sideways. By swiveling away to the side With these individual parts, the preheated scrap iron can be fed directly into the furnace concerned.

In order to be able to achieve a sufficiently high temperature during preheating, it is necessary to make the walls of a To protect the filling tub with a fireproof inner lining.

This makes preheating expensive. Furthermore, the lining is exposed to severe mechanical stresses, in particular during the filling and emptying of the relevant filling tub. The refractory linings therefore do not have a long service life.
The aim of the innovation is _s to eliminate the need for the refractory lining and at the same time to achieve a high degree of preheating.

According to Heuer this is achieved in that the The preheating device is provided with a device which the inside of the wall of the filling tub with the help of a gaseous coolant, preferably air, cools.

According to one embodiment of the innovation, the

end cover provided around its circumference with an annular channel which is connected to a gaseous Coolant outgoing supply source can be connected and the one with a downwardly directed annular Slot or a series of downwardly directed holes or nozzles through which a or several streams of a gaseous coolant directed downwards against the inside of the oil tub can be.

Instead of the closure cover provided with an annular channel, a corresponding channel can also be used provided on the upper edge of the wall of the filling tub be. According to an advantageous embodiment of the innovation, the inside of the filling tub is in a certain distance from the wall with a cylindrical baffle provided from the upper edge the filling tub up to a certain distance runs above the bottom of the filling tub in question.

To make it easier to understand, the wage is described in-α standing described in more detail with reference to a drawing.

yig. 1 shows schematically in a partial sectional view an embodiment of the device according to the innovation.

Pig. 2 shows a further embodiment of the appropriate preheating device.

In Pig. 1, the wall of the Püllkübels is denoted by 1. The bottom of the filling tub consists of two halves 2 and 3, which are pivotably mounted in swivel joints 4, 5.

£ 6053

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With a closure cover is designated, dermLt in the drawing is provided burners not shown. A channel 7 is provided in the closure cover 6, which is used to supply a gaseous coolant. An annular channel 8 is connected to the channel 7, which runs around the circumference of the cap · The last-mentioned channel is on the underside with a Risgfcxaigen solitude 9 provided, in the gaseous Coolant can flow down along the inside of the wall 1.

Hit 11 is a cylindrical baffle called the is arranged offset inwardly at a certain distance from the wall 1. The relevant baffle 11 extends from the upper edge of the filling tub to a point which is a certain distance above the bottom of the relevant Püllkübels lies.

The one in Pig. The embodiment of the preheating device according to the invention shown in FIG. 2 differs from that in Pig. 1 embodiment shown in that instead of si2 ^ö 2 rin ^ fcrisi ^ sn channel S us des n nfawg of the closure cover 6, a corresponding annular channel 12 is provided on the upper edge of the filler bucket. The channel 12 is verseken with an annular slot 13, which serves the same purpose as the slot 9. In both embodiments of the innovation according to pre-heater, instead of a rxngföraigea Ssklitsss 9 and 13, a A "nz" liT be provided holes or nozzles are preferably arranged distributed from one another at equal intervals.

His device constructed according to the hiring makes it possible to use very hot combustion gases, see above

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that a very large heat effect is achieved. G-leicxis are the iaii; using a fsusr = fixed lining of the inner wall of the filling tub associated costs and difficulties avoided.

Claims (6)

SCHITTZANSPEtJOHE 1. Device for preheating scrap iron, using a filling tub and a Versohlußdeckel provided with burners, characterized by a Device (7,8,9 or 12,13), which a gaseous coolant to the inside of the wall (l) of the Füllkübela leads there. 2. Apparatus according to claim 1, characterized in that the device supplying a gaseous coolant contains an annular channel (8) which runs around the circumference of the locking device (6) with the uni one or more, cooling air supplying supply channels (7) is connected, and that the annular The channel (6) is stranded with a downward-facing opening (9) through which the cooling air flows towards the inside the wall of the filling tub can be removed. 3. Apparatus according to claim 2, characterized in that the provided in the annular channel (8) Opening (9) is formed by an annular slot or by a series of holes or nozzles. 4 ·. Device according to claim 1, characterized in that that the filling tub is provided near its upper edge with an annular channel (12) which is connected to a gaseous coolant-releasing supply source can be connected, and that this annular channel (12) with a downwardly directed opening (13) is provided through which a flow of cooling air against the inside the wall (1) of the filling tub can be guided. $ 05 9/10/70 5. Device according to claim 4, characterized in that the vorgessxiene (12) in the annular channel, after opening downward {13} is formed by an annular slot or a series of annularly arranged holes or nozzles. 6. Torrichtung according to claim 1, characterized in _t that the Füllkübel nit a zylinderförnigen baffle (10) is provided after forming in some distance from the wall (1) of the upper edge of Füllkübels downward extending a ringföraigen interspace (11) through which the cooling air can be directed downwards. 0510.9.70