DE2606485C2 - Disc crusher for crushing hard and abrasive materials - Google Patents

Description

The invention relates to a disc crusher for crushing hard and abrasive materials according to the preamble of claim 1. In such a disc crusher, known from US-PS 20 83 462, a disc mounted on a horizontal shaft has crushing pins on its vertical flat disc surface. A conical disc inclined at an angle to the horizontal is associated with this disc at a distance such that an essentially vertical gap is formed between the flat disc and the conical surface of the disc, with crushing pins also being attached to the conical surface. The two discs are arranged in a housing which is fed from above with the material to be crushed. In the lower area of the housing, a device for removing the crushed material is provided.

It is difficult to adjust the known disc crusher in such a way that material of a given size can be crushed homogeneously.

The object underlying the invention is to design the disc crusher of the generic type in such a way that, with a simple construction, the introduced crushed material can be broken into pieces of essentially the same adjustable size.

This object is achieved in the disc breaker of the generic type with the features specified in the characterizing part of patent claim 1 , which are advantageously further developed in claim 2.

The disc crusher designed according to the invention allows the desired size of the crushed material to be set. The crushed material with this size is extremely uniform.

The invention is explained in more detail with reference to the drawing, which shows a disk crusher schematically in axial section.

The disc crusher shown in the drawing, which is used to crush hard and abrasive materials, has a flat disc 4 mounted in a base frame 2 and driven by a mechanical gear 1 , and a conical disc 6 which interacts with it to crush and which is mounted in a bearing box 8 on the top of a housing 10 surrounding the disc crusher. The axis of rotation of the conical disc 6 is angled to the axis of rotation of the flat disc 4. A crushing gap is formed between the conical disc 6 and the flat disc 4. The bearing box 8 is attached to the housing 10 with the aid of screws and springs in such a way that the bearing box with the conical disc 6 can be axially adjusted against the spring force in order to adjust the crushing gap width. In the housing 10 there is a feed pipe 7 which opens at the top for the material to be crushed and a discharge line 3 which opens at the bottom for the crushed granular material. The conical disk 6 can be coupled to an independent drive 9 shown in dash-dotted lines. A cleaning scraper 11 is provided in the housing 10 below the flat disk 4 .

As shown in the drawing, the flat disk 4 is arranged horizontally, while the conical disk 6 is held above it to form the crushing gap. The feed pipe 7 opens out onto the flat disk 4 in front of the crushing gap in the direction of rotation of the disks 4 and 6. Also viewed in the direction of rotation of the disks 4 and 6 , a scraper 5 is attached after the crushing gap and shortly before the outlet of the feed pipe 7 , which deflects the broken material lying on the flat disk 4 to the discharge line 3 .

Material to be crushed is continuously fed through the feed pipe 7 and falls onto the flat disk 4. When the flat disk 4 rotates, the material to be crushed enters the crushing gap between the flat disk 4 and the conical disk 6 and is crushed into pieces of material of a predetermined size depending on the crushing gap set. The crushed material transported further by the flat disk 4 is deflected to the discharge line 3 by the scraper 5 shortly before the area in which the material to be crushed falls from the feed pipe 7 onto the flat disk 4. The scraper 5 is hinged to the housing 10 in order to be able to optimally deflect the crushed material by adjusting its angle with respect to the flat disk 4 .

Claims (2)

1. Disc crusher for crushing hard and abrasive materials, with a flat disc driven in rotation and a conical disc which cooperates with it in a crushing manner and is mounted on a rotatable support, the axis of rotation of which is angled to the axis of rotation of the flat disc so that a crushing gap is formed between the two discs, and which can be pushed out axially against a spring force and is mounted in an axially adjustable manner to adjust the crushing gap width, and with a housing enclosing the discs, which has a feed pipe for the material to be crushed which opens in from above and a discharge line for the crushed, granular material which opens out downwards, characterized in that - that the flat disc ( 4 ) is arranged horizontally and the conical disc ( 6 ) is arranged above it, - that the feed pipe ( 7 ) - seen in the direction of rotation of the discs ( 4 , 6 ) - opens onto the flat disc ( 4 ) in front of the squeezing gap, - and that - also viewed in the direction of rotation of the discs ( 4 , 6 ) - a scraper ( 5 ) is mounted after the crushing gap and shortly before the outlet of the feed pipe ( 7 ), which deflects the broken material lying on the flat disc ( 4 ) to the discharge line ( 3 ). 2. Disc crusher according to claim 1, characterized in that the conical disc ( 6 ) can be coupled to its own drive.