DE2925516C2 - Device for chopping packaged bread for fodder purposes - Google Patents

Description

2. Apparatus according to claim 1, characterized in that the comminuting drum (14) consists of consists of a roller with two oppositely arranged blow bars

3. Apparatus according to claim 1 and 2, characterized by at the end of the vibrating screen (18) arranged shaking tines (20) which work above and in front of the fan (6).

4. Device according to one or more of the preceding claims, characterized in that that the wind tunnel (7) is arranged rising towards its free discharge end.

5. Crushing device according to one or more of the preceding claims, characterized characterized in that the grate (17) in its height position opposite the crushing drum (14) is adjustable.

6. Device according to one or more of the preceding claims, characterized in that that the grate (17) is at least partially concentric to the drum circumference.

7. Device according to one or more of the preceding claims, characterized by a feed hopper (I) ₁ which is adapted in its size to a front loader shovel.

8. Device according to one or more of the preceding claims, characterized in that that the fan (6) can be regulated in its performance.

The invention relates to a device for chopping packaged bread for fodder purposes in Livestock farms.

In the large-scale production of bread that is common today, it is packed to the Shops delivered and must be taken back here if it has exceeded a certain storage time be, d. H. be withdrawn from circulation, the problem then being whether this bread still makes sense further exploit.

This is often done in such a way that the bread farms that use this bread in particular for feeding purposes Recycle pigs. It is imperative that the packaging material surrounding the bread, Paper, aluminum foil and the like is removed. Numerous attempts to "unpack" the bread by machine have failed so far, so that it is now common practice to "unpack" the bread by hand is carried out, but thereby the costs for

ίο the product finally won so increase that it has become uninteresting for farms

The invention is based on the object of providing a mechanical device for shredding and "unpacking" of bread to create.

This object on which the invention is based is achieved by a device which is characterized by

a) a rotatingly driven shredding drum that acts as a counter surface above one Grate is arranged,

b) a vibrating screen below the grate, the screen passage of which falls onto a discharge conveyor belt and whose sieve residue is fed to an air classifier,

c) an elongated, flat wind tunnel equipped with a sieve grate on which Before a fan is arranged in the wind flow of the screen residue of the vibrating screen is indicated, while at the other end a collecting device for the separated from the bread Packaging material is provided during the passage through the grate of the wind tunnel is placed on the discharge conveyor belt.

As a result, the bread and the packaging is crushed, then the bread is guided over sieve grates in such a way that the relatively heavier bread leaves the sieve grate as a sieve passage, while the relatively lighter packaging material is discharged as sieve residue. Through the wind sifting in a closed elongated rising channel, the bottom of which is designed as a relatively rough screen grate, is achieved that the solid bread particles brushing along the floor find such resistance that they are forced to pass through the sieve.

From DE-AS 11 27 265 a device for Known stripping and air sifting of tobacco leaves,

so in which a rotating shredding device is used, the one above as a counter surface acting grate is provided. The crushed products are then placed on this grate abandoned normal wind sifting, the wind tunnel being designed in a complicated manner according to its task and is angled several times and open into a calming area. While known at this A normal wind sifting device is proposed in the case of the invention Equipment consisting of an interplay of shredding device, vibrating screen separation and air separation a solution to the problem created, packaged bread from its packaging inexpensively to separate, to remove the packaging residues, but on the other hand the bread of a meaningful recycling forward. The known device according to DE-AS 11 27 265 is neither capable of the Invention underlying problem to be solved still there

they are a stimulus in the direction of the combination according to the invention.

Advantageous refinements of the device according to the main claim are given in the subclaims Are defined.

An embodiment of the invention is explained below with reference to the drawings. The drawing shows in

F i g. 1 shows a diagrammatic overall view of the machine and in

2 in a schematic sectional view the essential workstations of the machine.

In Fig. 1, 1 denotes a feed hopper, which is given up here, for example via a front loader Well fed to a shredding device 2, which is driven by a drive motor 3. Below A vibrating sieve is arranged in the comminution device and its sieve passage is transferred to a discharge conveyor belt 4 there, which leads to the actual dispensing end 5, while the sieve residue is a Wind sifter is abandoned, which consists of a fan 6 and a wind tunnel 7 The wind tunnel is how this is shown particularly clearly by the illustration in FIG. 1, arranged rising and releases the packaging material separated from the bread at its free end.

As can be seen from the drawing, the device is arranged to be movable and has a steering roller 8 as well two wheels 9 and 10, so that this .Vorrichtung on a farm can be moved easily and thus brought to the most favorable place of use.

The schematic representation in Figure 2 shows that the feed hopper 1 is equipped with a scraper conveyor 11, so that the material discharged in this feed hopper is fed to a passage opening 12 which leads to the shredding device 2. This shredding device consists essentially of a rotating drum 14, which is occupied with two beater bars 15 and 16 and which is arranged above a grate 17 acting as a counter surface, the grate being formed concentrically to the outer circumference of the drum 14 over at least part of its length , so that an effective chopping of the packed bread arriving here is achieved. The grate passage reaches a vibrating screen 18, the drive of which at 19 in FIG. 1 can be seen and at the free discharge end of which shaking tines 20 are arranged. The vibrating screen vibrates in the direction of arrow F. Below the shaking tines 20, the adjustable fan 6 is provided, which acts on the shaking tines 20 with part of the air generated by it while the main air flow enters the interior of the wind tunnel 7, the bottom of which is formed by a grate 21, this grate not over the the entire length of the floor must be sufficient, but it makes sense that only the upper part of the channel is equipped with such a sieve grate. The sieve grate defines with the actual bottom 22 of the channel a passage 23 which leads to the discharge belt 4 which is also fed from the sieve passage of the vibrating screen 18 and which is driven in the direction of arrow F2 .

Surprisingly, when using the machine according to the invention, it was found that an effective separation between packaging and bread is achieved on the one hand and that at the same time a effective crushing of the bread is achieved, so that the product obtained directly the feeding system can be fed.

For this purpose 2 sheets of drawings

Claims (1)

Patent claims: 1. Device for chopping packaged bread for animal feed purposes in animal breeding farms, marked by a) a rotatingly driven comminution drum (14), which is above a counter surface acting grate (17) is arranged, b) a vibrating sieve (18) below the grate, the sieve passage on a discharge conveyor belt (4) falls and whose sieve residue is fed to an air classifier, c) an elongated, flat wind tunnel (7) equipped with a sieve grate (21), at one end a fan (6) is arranged, in whose wind flow the sieve residue of the Vibrating screen (18) is dispensed, while the other end is a collection device for the packaging material separate from the bread is provided during the passage through the screen grate (21) of the wind tunnel (7) is given to the delivery conveyor belt (4).