DE2528034B2 - Device for feeding straw to a processing machine - Google Patents

Description

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The invention relates to a device for feeding straw or the like conveyed goods to a processing machine according to patent 1456695.

In pneumatic conveying technology, it is known to keep the air in a circuit for the conveying process, by being fed back to the ω material feed after separation of the conveyed material (DE-AN F 5276 XI / 81e v. 6.12. 51). Has such an air return one already intended for the promotion of light fibrous material (DE-OS 2102095). Included however, the conveyed goods were not affected by a strong tn Compressed air flow pressed into the receiving shaft, but under the action of its own gravity in the Brought to the receiving shaft to sink, the supply line carries a smaller amount of air than the Air return line.

Although in the storage shaft when feeding light goods to a processing machine the machine a significant air pressure must be maintained, according to the invention can be a substantial Part of the air can be recirculated by the plenum, in which the larger Part of the compressed air escapes, is connected to the suction side of the fan. The collecting space be designed as an allocation container for the material to be conveyed. There is then the advantageous possibility the goods stored in the feed container to maintain the required back pressure to be used by placing the suction line coming from the storage shaft and the suction line of the blower on top of each other out into remote locations in the feeder container and thus through its flow-inhibiting material filling are separated. The transition space from the storage shaft to the adjoining part of the processing machine can also be eliminated as an annoying source of dust be that this space is enclosed by a housing that is connected by a drain pipe the suction side of the fan is connected.

A particularly good and consistently reliable metering of the processing machine can be achieved achieve that in the outlet of the storage shaft, the dammed-off metering rollers are attached and also in that a feed device controlled by the height of the column of goods in the storage shaft is provided for the allocation container.

In the drawing, the invention is illustrated using an exemplary embodiment.

The material is supplied, as in the main patent, by a cutting fan 14, which cuts the imported material into the desired length or, if it is already allocated in the desired fiber length, by a powerful air flow via a compressed air line 1 to a storage duct 2, at the bottom , open end the material is drawn off by metering rollers 11, 12 and a conveyor belt 3 with driver teeth and fed to further processing with the aid of a press roller 13 in a predetermined layer thickness h.

The main part of the Förderpreßluft escapes over the storage shaft 2 via a branch line 6, the opens into a collecting space 15. This collecting space also serves as an allocation container for the goods to the fan 14. The branch line 6 and the suction opening 20 of the fan 14 are remote from one another Places in the collecting space or dispensing container 15 attached so that they are constantly renewed by the Conveyed goods supply in the allocation container are separated from each other in a flow-inhibiting manner.

The transition space 24 from the storage shaft 2 to the connecting part of the machine is of a housing 18 enclosed, which is connected by a discharge line 19 to the suction side of the fan.

A feed device 21, preferably with a rotating bale divider 16, is provided for the feed container 15 and is controlled via a control line 23 by a control device 22 influenced by the height H of the material column 8 in the storage shaft 2.

The compressed air line 1 and the branch line 6 are with a flow direction offset from one another by about 180 ° connected to the head side of the storage shaft 2.

The device shown is not just for that

Manufacture of straw mats, but also for end products of other shapes, for example for manufacturing of bottle sleeves and for the processing of other fiber goods, for example coconut fibers, to be used accordingly.

List of reference symbols

1 delivery line

2 storage shaft

3 conveyor belt

6 branch line

7 connection opening for 6

8 manor column

11.12 metering rollers

13 press roller

14 blower, cutter blower

15 allocation container, collecting area

16 bale dividers

17 Connection from 6 to 15

18 housing

19 drain line for 18

20 suction opening from 14

21 feeder for 15

22 control unit for 21

23 control line g

24 transition room

1 sheet of drawings

Claims (1)

Patronage claims: 1. Device for feeding straw or the like conveyed material by a fan, which the material from a collecting space via a compressed air line and a storage shaft of a processing machine feeds, the main part of the compressed air flow with a sudden change of direction of more than 90 ° at the upper part of the Storage shaft escapes into the collecting space via an air line branching off there, according to the patent 1456695, characterized in that the collecting space (15) on the suction side of the fan (14) is connected. 2. Apparatus according to claim 1, characterized in that the Preßlufizuleitung (1} and the branch line (6) with flow direction offset from one another by about 180 ° to the Are connected to the top of the storage shaft (2). 3. Apparatus according to claim 1, characterized in that the collecting space (15) as a dispensing container is designed for the material to be conveyed. 4. Apparatus according to claim 3, characterized in that the branch line (6) and the Suction opening (20) of the fan (14) on remote locations in the collecting space or dispensing container (15) open so that their mouths through the preferably constantly renewed supply of conveyed goods are separated from each other in a flow-inhibiting manner in the dispensing container. 5. Device according to one of claims 1 to 4, characterized in that the transfer space (24) from the storage shaft (2) to the subsequent Part of the processing machine is enclosed by a housing (18) which is connected by a discharge line (19) is connected to the suction side of the fan (14). 6. Device, in particular according to one of claims 1 to 4, characterized in that in the outlet of the storage shaft (2) the jammed material is removed by metering rollers (11, 12) attached are. 7. Device, in particular according to one of claims 1 to 6, characterized in that one of the height (H) of the material column (8) in the storage shaft (2) controlled feed device (21) for the dispensing container (15) is provided. 21)