DE1483686A1 - Method and device for conveying powdery material to be conveyed - Google Patents

Description

Karl Λ. kV eyelet

Dip '-i.iij.
Munich-Γ -Λαώ i \ J \

W / Hb Munich-Pullach, November 15, 1965

THE BRITISH IHON AND STEiSL RESEARCH ASSOCIATION, 24, Buckingham Gate, London, S.Vf. 1. England

Method and device for conveying powdery material to be conveyed.

The invention relates to a method and a device for conveying pulverulent material to be conveyed, in particular pulverulent metal which is conveyed into the closed gap of a compaction roller.

üs is already known to put powdered metal in the nip to feed from compaction rollers directly by means of gravity, namely by means of a screw conveyor or a Carrier strip from which the continuous metal strip is substantially separated.

However, these known conveying methods have the disadvantage that they do not allow the powdered material to be conveyed to be conveyed into the roller gap at a speed which is sufficient to overcome the phenomenon whereby the air in the powdered material to be conveyed escapes into the region of the roller gap and shows the tendency to prevent the conveyed material from entering the gap, especially at high rolling speeds, as are necessary for the economical production of pressed metal strips.

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In one embodiment of the method according to the invention becomes a rural metal object made of granular material formed and consists in that first the material with a certain speed in the V / alaenspalt of a Pair of compaction rollers and then thrown continuously compacted between the rollers into a compact elongated object.

A device for carrying out the method according to the invention is also provided, specifically for filling in the material into the nip of a pair of compaction rollers, a rotor having means for engaging the Material to be conveyed and intended for continuous filling of the material at a certain speed into the Yfalzspalt is.

The mentioned method and the device are in particular for rolling metal strips directly from the powdery Metal suitable.

The powdery material to be conveyed is filled in by a device, which has a rotor in a housing with inlet and outlet channels, and furthermore a number of radial lugs or wings for engaging the powdery material to be conveyed, which is at the inlet in the housing enters and leaves the device at the outlet at the desired speed directly into the Y / alzspalt.

Further advantages and details of the invention emerge from the following description of two exemplary embodiments referring to the drawing. In this show:

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Figure 1 shows a cross section through the inventive Sponsors; and

Fig. 2 is a perspective view of a second embodiment of the wing rotor.

In FIG. 1, the rotor is denoted by 2 and has vanes 1 arranged at the same distance from one another on the circumference equipped. The rotor is mounted on a shaft 3.

The rotor runs in a cylindrical space 7, which is formed by the walls of the housing 5, and a Inlet 4 and an outlet S »for the powdery material to be conveyed is in connection with room 7.

The annular space between the rotor 2 and the inner wall del G-ehäuses 5 is through wings in a number of pockets 8

divided so that when shaft 3 (in the figure in the counter-clockwise sense) the powdery material to be conveyed by an unillustrated container is filled into the inlet 4, uiiü accelerated by the pockets 8 in circulation offset vjird, the pockets 8 to the conveyed 6 promote in the roll gap, not shown.

The delivery rate with which the powdery material is fed to the uhlz3Tphit can be controlled by the speed of rotation of the cylinder and by changing the cross section of the inlet 4, which has an adjustable slide lock 9 for this purpose.

CBD OHL 8 vanes are illustrated on the rotor / can mn number gemürjs the ratio of the maximum Umfanga-; '.- 3cnwindigkeit of the rotor to be changed to the maximum rolling speed.

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H83686

Figure 2 illustrates a rotor 10 with 32 blades, which in four axial sets 11, 12, 13 »14 of eight each Wings are arranged with the wings of each set offset relative to the wings of the other three sets are arranged. As a result, a more constant delivery rate of the powdery material to be conveyed is achieved in comparison to the rotor according to FIG. 1.

Although the conveyor illustrated in Figure 1 as a horizontal conveyor is illustrated, it is obvious on the basis of this, the conveyor in a vertical position bring down the conveyance when used in conjunction with a vertical roller he follows.

The conveyor described above can convey powdery material to the roll gap at a speed that is substantially higher than any of the known conventional methods. In particular, the particles of the powdery material to be conveyed is given a sufficiently high kinetic energy, so that they Air escaping from the conveyed material can penetrate in the area of the roll gap and form a tight strip of excellent quality. Because of this criterion and of course the fact that the rotor throughput must be equal to or greater than the throughput of the compact strip, the actual conveying speed kept lower, equal to or greater than the rolling speed of the compacted strip will.

For example, rolling speeds are currently of

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12o m / min, when using the aforementioned conveyor device common, in contrast to a maximum rolling speed of about 36 m / min., as is the case with known conveyor methods can be achieved.

All of the details described and illustrated are relevant to the invention.

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ORIGINAL INSPECTED

Claims (9)

H83686 PATENT CLAIMS 1. Method of forming an elongated object particulate! Material, characterized in that the material initially with a , certain speed in the roll gap of a pair thrown by compaction rollers and / continuous "between the rollers in a compact rural object is compressed. 2. The method according to claim 1, characterized in that the centrifugal speed of the material is greater than the rolling speed of the compacted elongated article. 3. The method according to claims 1 or 2, characterized in that that the particulate material is a powdery metal. 4. The method according to one or more of the preceding claims, characterized in that a continuous Stripe is generated. 5. Device for performing the method according to claim or more of the preceding claims, characterized in that that it has a rotor (2) with a device for engaging the conveyed material through which the material is continuously thrown into the roll gap at a certain speed. 6. The device according to claim 5, characterized in that the device for engaging the conveyed material from a 909838/0362 U83686 Number of vanes (1) arranged at a distance from one another on the circumference of the rotor for circulation with the rotor (2). 7. The device according to claim 6, characterized in that the rotor is provided with a number of coaxial sets (11, 12, 13 »14) is equipped with wings, each set of which is offset from the wings of the adjacent set is arranged. 8. Device according to one of claims 5-7, characterized in that that the rotor (2) for the purpose of rotation in a housing (5) with an inlet (4) and an outlet for aas teilchenforai.je Llaterial is stored. 9. Apparatus according to claim 8, characterized in that that the device with an adjustable cross-sectional zone of the inlet (4, 9) to define a certain Flow rate is equipped. i. Device according to one of claims 5-9, thereby characterized in that the drive device for rotating the iotors (2) is adjustable to a certain speed is ο 909838/0362 <f Blank page