DD156575A5 - DEVICE FOR CRUSHING MATERIALS - Google Patents

Abstract

Apparatus for shredding materials such as wood, leaves, plastic, paper, cardboard and the like from a knife set with a pre-shredder and a star knife set. The aim is to shred the goods quickly and evenly. The object is to design the device so that a Schnittgutaufnahme is guaranteed regardless of the nature of the material to be shredded, the clippings finely cut and jamming of the clippings, especially in wood, is avoided. This is inventively achieved in that the knife ends of the pre-shredder are arranged in the longitudinal axis by an angle of 5 degrees to 30 degrees opposite to each other twisted.

Description

58 872 23

AP B 02 C / 227 948/1

Berlin, 4. 6 * 81

Apparatus for shredding materials

Field of application of the invention

The invention relates to a device for crushing materials, such. B "Wood, grass, leaves, plastic, paper, cardboard and the like, from a set of knives with a pre-shredder and a star knife set.

Characteristic of the known technical solutions

Known devices of this type have the disadvantage that, especially for light materials by the pre-shredder no Schnittgutaufnahme takes place and continue to be the danger that the clippings jammed.

Object of the invention

The aim of the invention is a device for comminuting materials, with which the clippings can be quickly and uniformly crushed.

Statement of the invention

The invention has for its object to form a device for crushing materials so that a Schilittgutaufnahme is guaranteed regardless of the type of material to be shredded, the clippings finely cut and jamming of the clippings, especially in wood, avoided «

According to the invention this is achieved in that the knife ends of the pre-shredder in the longitudinal axis by a V / inkel of 5 ° to 30 ° opposite to each other twisted ange-

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AP B 02 C / 22? 948/1 Berlin, 4. 6. 81

are orders.

As a result, the Schnittgutaufnahme is guaranteed regardless of the type of material to be shredded.

In order to finely cut the clippings, provides an advantageous embodiment., That the uppermost flat blade of the star blade set is angled upwards,

According to a further advantageous embodiment, the ends of the Plachmesser the star blade set a clearance angle f® on to prevent jamming of the clippings, especially in wood.

In order to prevent falling through of the goods on the outer edge of the knife, it is also proposed to arrange a ring in the housing below the Sternmessersatζes on the housing inner wall.

It is also advantageous to arrange hare between the pre-shredder and the star blade set on the wall of the knife room. As a result, on the one hand jamming of the goods is prevented and - especially in wood an even finer crushing achieved.

The comminution is even smaller if one or more hammers are arranged below the star blade set.

If large quantities are to be shredded, then advantageously several sets of knives are arranged side by side »

embodiment

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing show:.

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AP B 02 C / 227 948/1 Berlin, 4. 6. 81

Pig. 1; a longitudinal section through the device,

Pig. 2j is a plan view of a flat blade of the star blade set,

Pig * 3a: the pre-shredder in a plan view,

Pig. 3bί the pre-shredder in a side view on the narrow side,

Pig. 3c; the pre-shredder in a side view on the longitudinal side j

Pig. 4: the device with knife set and several hammers.

The knife set arranged in a cylindrical housing 6 consists of a pre-shredder 1 whose knife ends are arranged in the longitudinal direction at an angle ψ * of 5 ° to 30 ° opposite to each other. In an advantageous embodiment, the angle is 6 °.

Below the pre-shredder 1 a star blade set 2 is arranged, the uppermost Plachmesser 3 is angled upwards. This angle ^ is advantageously 15 °. The Plachmesser 3 have a clearance angle ^: (& 8 ° to 12 °, whereby jamming of the crop is prevented.

In the knife room between the pre-shredder 1 and the star blade set 2 rabbits 7 are arranged »

Below the star blade set 2, a ring 4 is arranged in the housing 6, which protrudes from the housing inner wall in the interior. The distance of the ring 4 from the bottom Plachmesser 3 is advantageously 5 mm.

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JlPB 02 G / 227 948/1 Berlin, 4. 6. 81

The combination of the aforementioned features ensures a fast and uniform comminution of the product to the finest particles.

Furthermore, one or more hammers 8 can be arranged below the star-shaped replacement set 2 if an even finer size reduction of the material is desired.

If large quantities are to be crushed, two or more knife sets can be arranged next to each other.

Claims (7)

1. Apparatus for crushing materials such. Leaves, plastic, paper, cardboard and the like, from a set of knives with a pre-shredder and einöm star set, characterized in that the knife ends of the pre-shredder (f) in the longitudinal axis by an angle ( * ψ) of 5 ° bi arranged twisted to each other » axis by an angle (W) of 5 ° to 30 ° opposite 2. Device according to item 1, characterized in that the uppermost flat blade (3) of the star blade set (2) is angled upwards, 3 «Device according to item 1 or 2, characterized in that the ends of the Plachmesser (3) have a clearance angle (ß) « 4. Device according to one of the items 1 to 3 »characterized in that in the housing (6) below the star blade set (2) on the housing inner wall, a ring (4) is arranged. 5. Device according to one of the items 1 to 4, characterized in that between the pre-shredder (1) and the star blade set (2) on the wall of the knife chamber lugs (7) are arranged. -. 5 - 58 872 23 AP B 02 E. / 227 948/1 Berlin, 4. 6. 81 invention claim 6. Device according to one of the items 1 to 5, characterized in that below the star blade set (2) one or more hammers (8) are arranged. 7. Device according to one of the points 1 to 6, characterized in that a plurality of sets of blades are arranged side by side β .- '.-