Apparatus for separating transporting air in fibrous material transportation

Abstract

An arrangement used for filtering out conveying air when supplying fiber material, e.g. cotton and the like to a processing machine is provided. The arrangement has an essentially vertical filling chute for the fiber material, the chute having a device with pneumatic fiber feed at the upper intake opening, and a floccule-forming device at the lower exit opening including a system of draw-in rolls and a fast-rotating opening roll. The chute includes at least one air-permeable surface for separating the fiber material from the conveying air. An evacuating device evacuates the filtered out conveying air. An exhaust air device is coupled to the evacuating device and has an air stream regulator which is connected to a control and regulating device. The conveying air stream is guided along the opening roll, and a partial air stream of the filtered out conveying air is guided into the exhaust air device.

Description

technical field

[0001] The present invention relates to a device in a spinning preparation plant for separating and conveying air when fibrous material, such as cotton, etc. Equipped with a device with pneumatic fiber input, the outlet below which is equipped with a flocculation device with a feeding device and a high-speed operating opening roller, in which there is at least one for separating the fiber material from the conveying air flow (separated) air-permeable surfaces and a device for discharging the conveying air which is introduced along the opening rollers. Background technique

[0002] In a known device (DE-OS 3217668), the entire delivery air flows along the opening rollers and into a downstream flocculation tunnel with air-permeable walls. The conveying air is separated from the fiber batt and then discharged, while the fiber batt is conveyed further by the conveying rollers. The conveying air is used to compress the fiber batts accumulated in the flocculation...

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