DE3208937A1 - DEVICE FOR THE CRUSHING OF COARSE BULK GOODS, IN PARTICULAR COAL - Google Patents

Description

PATENT LAWYERS

DR.-ING. R. DÖRING DIPL.-PHYS. DR. J. FRICKE

BRAUNSCHWEIG MUNICH

KONE OY
Munkkiniemen Puistotie 25

00330 Helsinki 33 / Pinnland

"Device for crushing coarse bulk material, in particular

Money"

The present invention relates to a device for comminuting of coarse bulk material, especially coal, with a container for the incoming goods to be shredded and a conveyor arranged in the container for transporting the goods to be shredded Good things about the crushing rollers.

Since in the known devices the bulk material is fed directly to the crushing rollers, these must be for a high throughput designed and made accordingly stable. The unwanted substances contained in the bulk material are larger Strength or toughness, such as pieces of wood or stones, are not crushed by the crushing rollers, but by means of a sieve device separate from the device.

It is the object of the invention to further develop a device of the type mentioned in the introduction in such a way that a smaller dimensioning

of the orphaned orphans possible and none separate from the device Sieve device is required.

The solution to the problem is characterized in that the conveyor consists of a set of sieve rollers, through which the material with a mesh size corresponding to the set of sieve rollers Grain size is exercised, and that the crushing rollers a further Screening device for the separation of unwanted bodies, such as stones and pieces of wood, is connected downstream. With help According to the invention, the size and power of the crushing rollers can be reduced as a very large part of the material to be crushed is screened off earlier and not through the rollers must go through. The screening device downstream of the crushing rollers separates the undesired ones in the same device Substances, and no separate screening device is required for this purpose.

A favorable embodiment of the invention is characterized in that that the conveyor is inclined upwards by a few degrees in the conveying direction. If the mass flow rate of the If the bulk material is very corroded in a slightly upward motion, this results in a more effective sieving process.

A second embodiment of the invention is characterized in that that a primary crusher cooperates with the conveyor. The primary crusher brought the largest chunks, and at the same time devoted smaller fragments, which with the help of the sieve roller set

to be deposited.

The invention is illustrated below using an example Described reference to the drawing, which shows a device according to the invention in section.

The device includes a container 1 for the coal material entering the device and to be crushed. The container 1 contains a roller conveyor 2 which feeds the coal material to be crushed between the crushing rollers ~ 5, k . The crushing rollers 3, ^ are followed by a screening device 5, by means of which the crushed coal 6 is separated from unbreakable stones and pieces of wood 7. The roller conveyor 2 consists of a set of sieve rollers through which the already broken pieces 8 of the coal material entering the container 1 are sieved off. The roller conveyor 2 is designed to rise upwards by a few degrees in its conveying direction. In connection with the roller conveyor 2, a primary crusher 9 is provided, which crushes the largest pieces to a size suitable for the crushing rollers 3, ^.

The coal material to be crushed is fed into a container 1 belonging to the device, in which the set of sieve rollers the coal pieces 8, which are present in the bulk material and have sufficiently small dimensions, are deposited. The rest of the coal material is transported on to the primary crusher 9, where the largest

Pieces are crushed. In connection with the pre-crushing, there are also smaller pieces of coal 10 that have already passed through the set of sieve rollers fall through. The actual breaking or comminution takes place between the breaking rollers 3, ^. Stones and pieces of wood also get between the rollers 3, 4, in which case the roller 4 deviates so far that these bodies can pass through. Such bodies are different from the one below Sieve device 5 deposited. All broken pieces end up on a chute conveyor below the device (not shown in the figure), with which it continues to transport will.

Since a very large part of the coal material to be crushed is already present when entering the device in such a way that it can already be screened by means of the screen roller set 2 and thus does not have to _{pass through the crushing rollers 3 S} 4, the power requirement of the crushing rollers is significantly lower than with any previously known devices.

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Claims (3)

PATENT LAWYERS DR.-ING. R. DÖRING DIPL.-PHYS. DR. J. FRICKE BRAUNSCHWEIG MUNICH claims 1. Device for crushing coarse bulk material, in particular KOhIe ₅ IUIt e ~ "~ -m container for the incoming and comminuted material and a conveyor arranged in the container for the transport of the material to be crushed to the crushing rollers, characterized in that the The conveyor (2) consists of a set of sieve rollers, through which the material is sieved out with a grain size corresponding to the mesh size of the set of sieve rollers, and that the crushing rollers (3> 4) have a further sieve device (5) for the separation of unwanted bodies, such as of stones and pieces of wood. 2. Device according to claim 1, characterized in that that the conveyor (2) is inclined upwards by a few degrees in the conveying direction. 3. Apparatus according to claim 1 or 2, characterized in that the conveyor (2) a primary crusher (9) cooperates.