SU1540774A2 - Device for sorting twisted tea leaves - Google Patents

Abstract

The invention relates to the tea industry and is an improvement of the device for sorting twisted tea leaves according to a.s. USSR N 776590. The aim of the invention is to increase the efficiency of sorting. The device for sorting the twisted tea leaf is provided with blades attached to the axis of the mesh drum with the possibility of rotational-translational motion, while the distance between the inner surface of the mesh drum and the lower edge of each blade is evenly reduced as the material is moved. 2 Il.

Description

The invention relates to a device for sorting tea leaves and is an improvement of the device according to the author, 776590.

The aim of the invention is to increase the efficiency and productivity of sorting.

FIG. 1 is a schematic diagram of an apparatus for sorting twisted tea leaf in FIG. 2 is the same cross section.

The device for sorting the twisted tea leaf contains an obliquely cylindrical shell 1 which is installed with the possibility of oscillating motion. In the lower part of the shell 1, the loading hopper 2 with the feed tray 3 is strengthened. In the upper part, the shell 1 has a window 4 for retraction

fractions and tray 5 for removal of similar fractions. The window 4 and the tray 5 are separated from one another by a partition 6. In order to prevent the product (passage fraction) from scattering, there is a partition 7 on the inner surface of the shell 1. A mesh drum 8 is installed eccentrically (with the axis shifted up). on a fixed axis 10, rigidly attached to the shell 1. To the axis 10 are rigidly attached bearings 11, on which the shaft 12 of the internal cleaning mechanism is mounted. To the outer side of the shell 1 are attached bearings 13, on which the shaft 14 of the external cleaning mechanism is mounted. The shafts 12 and 14 are provided with blades 15 in contact with the surface of the mesh.

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drum 8 from different sides. One or more blades 17 are mounted on the axis 10 by means of bearings 16. The distance between the surface of the mesh drum 8 and the lower edge of each blade on the material feed side is 50 mm, and to the discharge end of the mesh drum this distance decreases uniformly and reaches 25 mm The device is equipped with a drive (not shown.) Providing oscillatory movements of the shell 1 and rotational movements of the shaft 14 of the external cleaning mechanism. In turn, shaft 14 is connected via a belt drive 18 to the shaft of the mesh drum 8, via belt gears 19 and 20 to the shaft 12 of the internal cleaning mechanism, and via a crank drive mechanism 21 to the shaft of the blades 17.

The device works as follows.

A drive (not shown) turns on, the device starts up. At the same time, the shell 1 and the mechanisms placed on it start oscillatory reciprocating movements, and the shaft 14 of the external cleaning mechanism additionally begins to rotate. From the shaft 14 by means of a belt drive 18, the mesh drum 8 starts rotational motion, and by means of two belt gears 19 and 20 - the shaft -12 of the internal cleaning mechanism. In addition, the rotation of the shaft 14 through the crank mechanism 21 turns into a rotational-translational motion of the blades 17.

The twisted tea leaf to be sorted with a continuous metered flow is fed into the hopper 2. Due to the reciprocating movement of the cylindrical shell 1, the twisted leaf from the hopper enters the inner surface of the mesh drum 8. crawl to tray 5, sift through the mesh surface of the drum 8. In this case, the reciprocating movement of the blades 17 provide t leveling bed of tea leaves, it is not to give weight

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move through the segment. This increases the sorting efficiency. Rotationally moving blades transfer the tea leaf to the large surface of the mesh drum 8, thereby increasing the sorting surface. This further improves the sorting efficiency and increases the capacity of the sorting device. Passage products are collected in the lower part of the cylindrical shell 1, then due to its reciprocating movement, they are moved and discharged through its window 4. The tail fraction is retracted from the screen drum 8 a certain part of the tea through the screens of the drum 8 (through passage) the height of the sheet of paper, mixed to the discharge tray 5, is reduced. However, despite this, the blades 17 can reach the mass of the tea over the entire length. This is facilitated by the fact that the distance between the inner surface of the mesh drum 8 and the lower edge of each blade 17 decreases evenly as the material is moved. During operation of the device, the inner and outer surfaces of the drum 8 are cleaned by means of the blades 15 attached to rotating in opposite directions with different numbers of revolutions the shafts 12 and 14 of the cleaning mechanisms.

Thus, in the device, the blades attached to the axis of the mesh drum with the possibility of rotational-translational motion ensure the leveling of the layer of the sorted mass, which contributes to the separation of the product and its transfer and placement on the large surface of the mesh drum. This increases the sorting efficiency and increases the productivity of the device.

Claims (1)

Invention Formula A device for sorting a twisted tea leaf according to avt.cut No. 776590, characterized in that, in order to increase the efficiency and productivity of sorting, it is equipped with paddles fixed along the axis of the mesh drum with the possibility of rotational-translational motion so that tt 12 15. 13 78 20 sixteen 17