DE3034378A1 - Compost shredding machine - with stationary cutters between rotating cutter blades in several planes - Google Patents

Abstract

Disintegrator to turn leaves, twigs, garden refuse and waste paper into raw material for compost consists of a high-speed vertical shaft with impact blades and at least two stationary cutting blades on the periphery of the wall, pref. with a 180 deg. offset relative to each other. This machine produces compost raw material of very uniform fine size and prevents any clogging of the cutting mechanism with tough and fibrous ground material.

Description

Shredding device

The invention relates to a device for comminuting materials, preferably to be composted such. H. Leaves, small branches, garden waste and paper, the shredding tools rotating in a housing on the housing rigidly attached cutting blades are assigned.

When shredding materials, such as non-compact tough or long fiber materials, it is problematic to have a failure-prone, continuous Can achieve passage of the grist z. Furthermore, it is necessary for a corresponding one Shredding device, be sure that the material to be shredded the the degree of fineness required for comporting.

Known shredding devices, equipped with several rotating Shredding tools are driven by a motor via a vertical axis. The material to be ground is fed in directly above the shredding device attached feed hopper. The grist is after leaving the grinding chamber fed to a grinding material container arranged below the grinding chamber.

These known devices have the disadvantage that the Regrind does not have the uniform degree of fineness required for composting receives. As a result, the ground material cannot decompose more evenly Can be recycled. Also a non-uniform load on the shredding device and clogging of the grist discharge channel are among the disadvantages of known, crushing devices used for composting.

This can be explained by the fact that it is not evenly shredded Grist, such as twigs and twigs, are very bulky and lead to clogging in the içi3hlkammer- or the grinding chamber discharge area.

Another major disadvantage of known devices is therein to see that tough and fibrous grist is around the knife-like shredding tools and impairs the further function or the entire shredding process or prevented.

The present invention is based on the object of a comminuting device for composting material in which a large, continuous, Due to the size of the ground material, the throughput is largely uniform is achieved without the knife-like shredding tools with tough and fibrous regrind.

According to the invention, the proper call is achieved by that rigidly attached to the grinding chamber housing wall cutting knife with the circumferential knife-like shredding tools are brought into operative connection.

The advantages achievable with the invention are mainly therein to see that the ground material is crushed into approximately even pieces, whereby the cutting blades, which are rigidly attached to the Kahlkammerkammer, serve as an abutment and In cooperation with the rotating cutting tools, a piece-by-piece shearing of tough and fibrous materials.

A star-shaped arrangement of several, one above the other in different levels provided high-speed revolving double-bladed cutter bar prevents The material to be comminuted can pass through the grinding chamber without aen rotating Cutting and fly knives to be captured. The rigid on the inner wall of the grinding chamber attached cutting blades prevent larger pieces of material to be shredded between the outer areas of the rotating shredding tools and the Clamp the inner edge of the Mahlkamner, continuously circulate with the shredding tools, Generate friction, and block the bar for the next material to be shredded. The rigidly provided cutting knives also work in coordination with the Speed of the rotating cutting tools that no insufficiently shredded Grist can pass through the cutting device, i.e. the material to be shredded becomes Due to centrifugal force, it is transported to the outside area of the rotating shredding tools.

There it is prevented by the rigid cutting knives from being used by the rotating shredding tools to be taken. These stare, knife-edged trained abutments shear or cut the material to be shredded in cooperation with the rotating shredding tools into largely uniform parts away.

Another feature of the invention can be seen in the fact that the rigid on the circumference of the Mablkammerwand offset arranged and attached cutting knife in a level just above or just below the rotating shredding tools are arranged. This ensures that the circumferential and rigid fastened Crushing tools mutually of fixed fibrous; and tough material free or a fix of material on resp. on the shredding tools is largely prevented from the start.

An example of the invention is shown in more detail in the drawings explained. FIG. 1 shows a sectional side view, and FIG. 2 shows a plan view on a device according to Figure 1.

As can be seen from the drawings, the present invention works from a shredding device, with wecher the material to be shredded through a housing (1) is fed to an arrangement of several comminuting tools and is discharged via a grist discharge channel (2). The crushing tools consist of variously arranged circumferentially on a drive shaft (3) trained fly knives (4, 4a and 4b), which on different levels on the Drive shaft (3) are attached. The distance between the individual fly knives is fixed by spacers (5). The ones that protrude into the grinding chamber (o) rigid cutting blades (7) are attached to the housing (1). Against the direction of rotation the shredding tools (4, 4a and 4b) have the rigid cutting blades (7) knife-like cutting edges (8). The cutting knives (z) are offset by 1800 on the cylindrical housing wall in different levels the rotating shredding tools (4, 4a and 4b) assigned to each other at a small distance.

In the lower area of the grinding chamber ((s) there is one on the Shaft (3) arranged wing-like ejector device (9), which the crushed Good conveyed through the outside via the regrind discharge channel (2).

The essence of the invention is by no means limited to that given by way of example Execution example limited.

L e r s e i t e

Claims (11)

P a t e n t a n s p r ü c h e 1. Device for shredding preferably to be composted materials with circular blade-like blades in a close-up chamber Crushing tools (4, 4a and 4b), characterized in that on the inner wall of the grinding chamber at least one cutting knife (7) is arranged. 2.> Device according to claim 1, characterized in that at least 2 cutting knives (7) are arranged offset on the circumference of the grinding chamber wall. 3.) Device according to claim 1 and 2, characterized in that 2 cutting blades (7) are arranged offset by 1800 on the inner wall of the Manlkammer. 4.) Device according to one or more of the preceding claims, thereby kerinzeicnnet that the cutting knives (7) in different levels one above the other are arranged. . Device according to one or more of the preceding claims, characterized in that the cutting knife (7) is rigidly attached to the grinding chamber wall are attached. 6. Device according to one or more of the preceding claims, characterized in that the cutting knife (7) is adjustable and lockable are. 7. Device according to one or more of the preceding claims, characterized in that the cutting knives (7) are designed to be exchangeable. 8. Device according to one or more of the preceding claims, characterized in that the cutting knife (7) counter to the direction of rotation of the Shredding tools (4, 4a and 4b) are knife-like. 9. Device according to one or more of the preceding claims, characterized in that the course of the cutting knife (7) largely to the Course of the end areas of the assigned comminuting tools (4, 4a and 4b) corresponds. 10. V0rrichtung according to one or more of the preceding claims, characterized in that the cutting blades (7) are rounded in their front areas are trained. 11. Device according to one or more of the preceding claims, dadurcii characterized in that the cutting knife (7) is at an angle to the plane of rotation the crushing tools (4, 4a and 4b) are employed.