DE29703886U1 - Impeller - Google Patents

Description

Company L. B. Bohle Maschinen + Verfahren GmbH, Industriestr. 18, 59320 Ennigerloh

"Stirring blades"
5

The innovation relates to an agitator blade for a comminution device with a frustoconical sieve and a rotatingly driven agitator unit arranged within the sieve, which is preferably designed as a two-blade agitator blade.

Crushing devices that also serve as sieving devices are used extensively in the pharmaceutical industry and are therefore subject to strict sanitary regulations. They must also process products of varying hardness

can be processed, whereby the sieving process should be carried out at the same time as the crushing process.

The innovation is based on the task of making the known agitator blade for such a shredding device as

to be designed in such a way that the product is effectively drawn in and, at the same time as the product is shredded, the sieve surrounding the agitator blade can be pressurized.
25

This problem underlying the innovation is solved by the teaching of the main claim.

An example of the innovation is shown in the drawing. The drawing shows in

Fig. 1 a side view of a stirring blade and in

Fig. 2 is a plan view of the agitator blade according to Fig. 1.

In the drawing, 1 indicates a central hub, on which

whose underside is connected to a base plate 3. On the base plate 3 and attached to the hub 1, agitator blades 2 and 5 extend diametrically opposite one another, which are designed as elongated, essentially rectangular metal bodies. These metal bodies extend upwards in

Adaptation to the inner shape of the sieve not shown in the drawing, whereby the inner edge of the sieve is indicated in dashed lines at 6 in Fig. 2.

However, the wings do not extend vertically

above, but - as Fig. 2 shows particularly clearly - slightly concavely curved towards the front in the direction of rotation of the agitator blade, whereby the direction of rotation of the agitator blade is indicated in Fig. 2 with the reference symbol F and the arrow.

Each wing 2 and 5 is chamfered on its outside, i.e. on the edge facing the inside of the screen, so that this chamfering creates a free space 4, whereby this free space, viewed in the direction of rotation, is between the outer edge of the chamfering and the inside of the screen 6

trained.

The combined effect of the curvature of the rotary blades 2 and 5 and the chamfering as well as the resulting free space 4 ensures that the material to be ground is effectively pulled down.

which is simultaneously squeezed through the sieve by this effect.

Claims (1)

HABBEL & HAB WL ^5: " ^S '··'i^lLinq. h.-q. habbel PATENT ATTORNEYS DIPL.-INQ. LUTZ HABBEL EUROPEAN PATENT ATTORNEYS PO Box 3429 ♦ 48019 Münster DIPL.-QEOQR. PETER HABBEL TELEPHONE (0251) 535 780 ♦ FAX (0251) 531 996 OURFILES; (please specify) B102/18781 Münster, 3 March 1997 Company L. B. Bohle Maschinen + Verfahren GmbH, Industriestr. 18, 59320 Ennigerloh "Stirring blades"
20 Claim for protection: Agitator blade for a crushing device with a truncated cone-shaped sieve and the rotating two-bladed agitator blade arranged within the sieve, characterized in characterized in that each agitator blade (2, 5) is connected to a circular base plate (3) with its lower edge, extends upwards to match the truncated cone shape of the sieve, is concavely curved forwards in the direction of rotation, with its outer edge facing the sieve being chamfered in such a way that between the inner side of the sieve and a free space (4) remains on the outside of the chamfered edge facing the inside of the sieve as seen in the direction of rotation of the sieve. HOUSE ADDRESS: AM KANONENQRABEN11 » D-48151 MÜNSTER