DE1604767A1 - Method and apparatus for treating loose fiber material - Google Patents

Description

Patent Service Agency A 135

Vaduz / Liechtenstein

7-5-1969

"Method and device for treating loose fiber material"

The invention relates to a method and a device for treating, in particular for drying and carbonizing loose fiber material, which passes through several treatment zones in the form of a fleece, the treatment medium preferably Air, passed through the fiber fleece and in a treatment zone the fiber fleece is transported in the horizontal direction.

It is known for drying loose fiber material as well for carbonation, to use both sieve drum dryers and sieve belt dryers. It is also known a device In which a sieve drum chamber is combined for drying and a chamber with a conveyor belt for carbonation.

Since in these known methods and devices, the fiber material is loosened by the drying process, loose fibers flying around quickly lead to soiling, e.g. B. the heating device or the upstream sieves. the Cleaning the device brings significant downtime.

The invention is based on the object, the performance of such To increase dryer, in particular in a drying and carbonizing process, that the downtimes are reduced.

According to the invention this object is achieved, that the fiber fleece at intervals, e.g. at the transition from a treatment zone

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is condensed into the following.

According to a further feature of the invention, this compaction is achieved by rollers or pairs of rollers, the upper or upper and below a conveyor belt with the material to be treated on it are arranged. A compression is also already carried out by the circulation of the treatment medium below the Fans arranged on the conveyor belt with the suction direction perpendicular to the conveyor belt. With this roller arrangement, the Fiber fly reduced in the desired way.

Another advantage of the claimed design is that moisture present in the fleece due to the rollers or roller pairs Nests are eliminated by compacting, d. H. the nests are squeezed wide and the moisture is increased to a larger one Distributed area and thus made more accessible to the drying medium. This is also associated with an increase in the performance of the device and a significantly more uniform treatment.

Finally, there is a further advantage of the roller arrangement that sealing of the treatment chamber and the treatment zones is effected among each other.

Two embodiments of the invention are shown in the drawing. Show it:

Figure 1 shows a device in longitudinal section,

FIG. 2 shows a cross section through the device according to FIG. 1, Section A-A,

Figure 3 compaction rollers in a combined system with screen drums and main belt.

The device according to FIG. 1 has a housing 1 which is divided into two treatment chambers 8 and 9 by a partition 2 is. A pair of rollers 5 is arranged at the inlet of the device, which is used to compress the fiber fleece 6 and at the same time for sealing the enema is used. Likewise, a pair of rollers 7 is to the upper

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··· j ™

enters the material from. of treatment zone 3 in the treatment zone 4 planned »

For transferring and simultaneously turning over the present in fleece form Materials, a slide serves 1o. A roller 11 at the inlet of the conveyor belt 1.2 compresses the fleece even more.

The drying device according to FIG. 3 consists of a treatment tube 13 with sieve drums 14, which are provided on the front side with fans (not shown), which remove the air vacuum the sieve drums. The material 6 is compressed on the screening drums by the induced draft of the fans. In the ™ downstream treatment chamber 15, a conveyor belt 16 is provided as a means of transport. At the delivery point of the property A roller 17 is arranged from the sieve drum to the conveyor belt, which presses on the material and further compresses the nonwoven fabric. At the same time, this roller seals the transfer point. Since the fiber fleece, especially if it is made of raw wool or If there is loose material, loosened up during the drying process, after a certain drying stretch there is again a pair of rollers 18 provided in the event that the compaction by the roller 17 and the suction should not be sufficient. For this reason the pair of rollers 18 is only shown in dashed lines.

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Claims (3)

Establishment for patent service A 135 Vaduz / Liechtenstein 7-5-1969 patent claims 1. Process for pretreatment, in particular for drying and carbonizing loose fiber material, which is in the form of a fleece passes through several treatment zones, whereby the treatment medium, preferably air, passed through the fiber fleece and at least in one treatment zone the fiber fleece in the horizontal direction is moved, characterized in that the nonwoven fabric as it runs there and when it passes from one treatment zone to the other is compressed. 2. Device for performing the method according to claim 1, with a treatment chamber which is divided into several treatment zones and in which at least one conveyor belt is used as a transport element * and a device for circulating the treatment medium are arranged, characterized in that rollers * and roller pairs are provided for compacting the fiber fleece. 3. Apparatus according to claim 2, characterized in that further Pairs of rollers are arranged within a treatment chamber or zone. 009883/0508 BAD ORiGfNAL