SU1694725A1 - Drum for loosening fibrous material - Google Patents

Abstract

The invention relates to the textile industry and can be used in cotton ginning machines, for example, in the cleaners of raw cotton from small trash. The purpose of the invention is to increase the cleaning effect, decrease the roughness and increase the loosening effect by increasing the gripping and holding capacity. For this, the working part of each hammer is made in the form of stepped cylinders, and the diameter of the tip at the top is smaller than at the base. h / d ratio (1/5) - (H / D). 2 Il.

Description

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The invention relates to the textile industry and can be used in the cleaning of fibrous material, mainly raw cotton.

Known loosening the drum, selected as a prototype, in which it is known to perform kolki with a decrease in diameter in height, where the shreds of the loosening drum are made of two parts - cylindrical (at the base) and conical with decreasing diameter in the groove height

The disadvantage of such pegs is that the bat, strung on a cone-shaped peg, is acted upon by a force dropping the bat from the pier, which helps push the bat away from the pier.

Another disadvantage is the increased likelihood of seed loss due to the sharp tip of the cleaver.

The purpose of the invention is to increase the cleansing effect of reducing the formation of stinging, increasing the loosening effect by increasing the gripping and holding capacity of loosening drum heads.

The goal is achieved by the fact that in a loosening drum containing radial pegs, each of which has at least one protrusion with a rectangular base adjacent to its lateral surface, the working part of each peg is made in the form of stepped cylinders; a ditch, the diameter of the peg at the top is smaller than that of the base, and the values of the diameter and its height are determined by the ratio h / d (1/5) - (H / D)

In Fig.} Shows a diagram of the cleaner of the fibrous material with the proposed fluffy drum, Fig.2 - a separate pegs made stepwise

The cleaner of fibrous material consists of a shaft 1. the feed rollers 2 installed below the shaft, below which

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there are loosening drums 3, on the surface of which there are radial pegs 4 of circular cross section, made with a stepped cylindrical working part, and strips 5 of a perforated mesh 6, enveloping the loosening drums from below,

The cleaner works as follows,

From the mine 1, the raw cotton is fed by feed rollers 2 to the loosening drum 3, which captures the raw cotton with the rollers 4 or strips 5 and pulls it over the mesh surface 6. At the same time, the raw cotton is separated and cleaned from litter. raw cotton is sent to the next drum and the process repeats.

During the processing of raw cotton with working drums equipped with well-known pegs, the material is repeatedly picked up along the mesh-like surface, while the flyers rotate one relative to the other, forming harnesses, and when they are thrown from one drum to another, the knots are overwhelmed and tied.

Making the working part of the pegs in the form of stepped cylinders with a smaller diameter at the apex contributes to a better retention of the raw cotton on the pegs, since in this case the ends of the pegs freely enter the fibrous cover of the flyers and the latter have a higher frictional force.

with a spike of smaller diameter due to the fact that the angle of girth of the fibers with this variant increases several times.

The thrust force created by the hammer prevents the sheaves from the pegs. Recommended dimensions help to better capture and retain the buckets on the pegs while maintaining the reliability of the design, since the part of the hammer with a doubled diameter is 0.1 fraction of the bow height.

Based on the above, it can be said that the invention allows to reduce the mechanical effect on raw cotton, reduce the number of working bodies with the same cleaning effect and reduce the formation of blemishes in the fiber.

Claims (1)

DETAILED DESCRIPTION OF THE INVENTION A drum for loosening a fibrous material, comprising a cylindrical shell and pegs radially fixed on it, made in the form of a rotating body with a diameter decreasing to the top of the groove, characterized in that, in order to increase the pickling ability of the pegs, they are made in length cylindrical sections, and the ratio of the length h of the section at the apex of the splinter to its diameter d corresponds to one fifth of the ratio of the length H of the total splitting to the largest diameter D of the cylindrical part h / d 1/5 H / D. Phie.1 If