SU1477794A1 - Apparatus for cleaning fibres from impurities - Google Patents

Abstract

The invention relates to the textile industry and can be used in spinning on card stock and similar machines for the processing of long fiber materials. In order to increase the cleaning efficiency and reduce the yield of longitudinal fibers to waste, the hole of the pallet has the shape of elliptical convergers, with the larger diameter of the confuser facing the drum, and the major axes of the ellipses are parallel to the sides of the pallet. 4 il.

Description

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The invention relates to the textile industry and can be used in spinning on card stock and similar machines for the processing of long fiber materials.

The aim of the invention is to increase the cleaning efficiency and decrease the yield of the spun fibers.

Figure 1 shows the device, a general view; Figures 2 and 3 show the configuration of the holes of the pallet; Fig. 4 shows the locations of the devices on the belt forging machine for flax.

The device comprises a pallet 1 with holes 2 arranged in a staggered pattern, made in the form of elliptical confusors, tapering as they move away from the drum surface, a trash knife 3 of the airfoil. The large axes of the ellipsoid holes are located (/

laid parallel to the sides of the pallet. The hole diameter is selected between 10 and 30 mm, depending on the type of fiber being processed. For example, for short flax fiber, the hole diameter is 20 mm. The center angle of the confuser is 150. The holes are arranged with a pitch of 40 mm along the width of the pallet and 80 mm in length.

The device is located on carding machines and similar machines, for example when processing flax fiber, in the following places of FIG. 3): one pallet (1) under the receiving drum and four pallets (4-7) under the main drum.

When the drums rotate under the action of centrifugal forces, fibers and trash particles jump off the teeth of the headset. Due to the difference in weight and in the shape of the surface, they move along different trajectories. The shape of the knife 3

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(Fig. 1) takes this difference into account and promotes the separation of fibers and sora. Weed impurities move below knife 3 and fall to waste, and the fibers pass under the knife and fall onto the tray. Upon further movement of the fibers, they interact with perforated pallets. Long distances between the holes eliminate rolling up of the fibers. When rotating around the drum, a rotating boundary layer (or stream) of air is formed with fibers and weed particles suspended in it. Under the action of centrifugal forces, part of the air leaves the boundary layer through the opening 2 of the pallets, dragging trash and dust. Fibers do not pass through the holes. At the same time, the air velocity in the confusion hole increases, which increases the efficiency of litter release. The streamlined hole pattern creates favorable conditions for the flow of air without disrupting the flow from its edge and the formation of turbulence. As a result, there is no return of trash from the air stream to

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headset and improved fiber break and fiber parallelization.

The design of the proposed device contributes to the better removal of weed impurities without rolling and winding the fibers, reducing the loss of the spun fiber and improving the quality of the product.

Formula of invention

A device for cleaning impurities and dust fibers to a carding machine containing perforated pallets curved in an arc and installed under the working drums of the carding machine, characterized in that, in order to increase the cleaning efficiency and reduce the output of the spun fibers to waste, the pallets have the shape of elliptical confusors, with the large diameter of each confusor facing the corresponding drum, and the large axes of the ellipses are arranged parallel to the sides of the pallet.

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Claims (1)

Claim U A device for cleaning fibers from debris and dust to a carding machine, containing perforated pallets, curved in an arc and installed under the working bar 2Q of the carding machine, characterized in that, in order to increase the efficiency of cleaning and reduce the yield of spun fibers to waste, a hole pallets have 25 is the shape of ellipsoidal confusers, with the larger diameter of each confuser facing the corresponding drum, and the large axes of the ellipses parallel to the sides of the pallet.