DE1928837U - SWIVELING COUNTER KNIFE FOR MILLS WITH ROTATING BLADES OR KNIVES. - Google Patents

Description

PA 572 628 * 30.10.65

ABSOHRIIT

LEAF Our sign day

-1- . . 8 / Hoe i4o May 1964-

"Swiveling counter knife for mills with rotating beater or knives "

The invention relates to a swiveling counter knife as it is required in all mills with rotating beaters or knives ^; which are generally known under the designation cross beater mill, beater mill or knife mill. In such mills, a sieve basket is arranged around the rotating beater or knife tool, through which the comminuted material is intended to penetrate. For the shredding itself, built-in counter knives are used, which the striking tools or knives brush past closely. If a metallic foreign body gets into such a mill, "there is considerable damage to counter knives, knives, bearings and the like.

- Q

For this reason, the invention relates to a swiveling counter knife, which swings out of the grinding chamber when a certain force is exceeded and thus a security against stronger ones Destruction of the mill offers.

The figure explains the invention in more detail. It shows a section from a knife mill with rotating knives and a counter knife in a sieve basket of such a mill.

The tool 1 with the knives 2 rotates inside the screen basket 3 of the mill housing and each knife 2 strokes close to the Counter knife 4-over between knife 2 and counter knife 4 the To cut up the material to be comminuted or, in the case of a cross beater mill, to break it up. So that the counter knife 4 a, in the Foreign bodies reaching the mill can evade, it is rotatably mounted about the bolt 5. Securing the counter knife in the working position can be done by a shear pin 6 or by a spring 7 \ or by other known means. In the working position the counter knife 4 rests against a fixed stop 8. So with Swing away: the counter knife, the screen basket 3 is not damaged and a narrow gap in the working position of the counter knife exists between screen basket 3 and counter knife, is the back surface. -the counter knife 4- as a cylindrical jacket around the axis of the bolt 5 trained. The counter knife 4 can also be serrated for special purposes or be recessed like a comb and can be used in mills τ-of the most varied of types with rotating knives, bats or other rotating parts.

Claims (4)

LEAF Our sign "Day -2-" 8 / Hoe - May 14, 1964 P a t, gf ^ XL t / ^ ii s ρ r ü c h e 1. At) swiveling counter knife for mills with rotating beaters or knives, characterized in that the counter knife (4) is rotatably mounted on a bolt (5) outside the screen basket (3), 2. Counter knife according to claim 1, characterized in that the knife back surface a section of a cylinder jacket (9) Om. forms the axis of the hinge pin (5). 5ο counter knife according to claims 1 or 2 characterized in that that the counter knife (4) is secured in the working position by a shear pin (6). 4. Counter knife according to claims 1 or 2, characterized in that that the counter knife (4) is secured in the working position by a spring (7) and a fixed stop (8).