SU1565465A1 - Device for sorting twisted tea leaves - Google Patents

Abstract

The invention relates to the tea industry. The goal is to improve the quality of sorting. The invention allows for more efficient use of the working surface of a flat screening sieve / S / due to its thorough cleaning. On both sides C, rotary rolls / B / s blades / L / in the form of a brush are mounted with the possibility of rotational and transverse translational movement. Strings along B are cleansing material from L. 1 s. P. f-ly, 3 ill.

Description

The invention relates to the tea processing industry.

The goal is to improve the quality of sorting.

Equipping the device with a mechanism for lateral movement and rotational movement of the cleaning rolls with the strings to remove material in conjunction with the screening screen makes it possible to increase the screening surface and the efficiency of its use by preventing clogging.

Fig. 1 is a schematic diagram of the proposed device for sorting twisted tea leaves; figure 2 is a view of And figure 1; on fig.Z - section bb in figure 1.

The device for sorting the twisted tea leaf contains a fixed frame 1, on which, by means of the levers 2, a flat sorting screen 3 is installed inclined to oscillate with the possibility of oscillating movement. A loading hopper 4 is installed above the loading lower end of the sorting screen 3 to supply the material to be sorted. On frame 1 there is an actuator 5 connected to the screening sieve 3 by means of a crank mechanism 6, which provides reciprocating oscillatory movement of the screening screen 3 by means of levers 2. At the top and bottom of the screening screen 3 parallel longitudinal bladed cleaning rolls 7 seconds are placed blades 8 and driven pulleys 9. Blades 8 of the cleaning rolls 7 are made in the form of brushes arranged along a helix. Tired out

about ate

4b O5 SP

The device is also equipped with a mechanism for lateral movement and rotational movement of the cleaning rolls 7, which is made in the form of longitudinal drive 10 and driven 11 shafts with pulleys 12 and 13, kinematically connected to the rolls 7 by means of a pair of screw 14 - a nut 15 and a belt drive 16. K nuts 15 screws 14 on which the rollers 7 are mounted, shaking strings 17 are attached, tensioned from the sides parallel to the rollers 7 indicated, with the possibility of interaction with the blades of the latter 8. The length of the bristles of the brush exceeds the maximum distance between the screening sieve 3 and roller 7 by 10-15 mm. The distance between each shaking string 17 and roller 7 is 15-20 mm less than the length of the brush bristles, thereby ensuring the interaction of the blades 8 with the sorting screen 3 and the strings 17. Under the screen

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The drive pulley and the driven pulley 13, as well as the movement of the belt transmission 16. With the latter, the pulleys 9 are engaged, which causes the rotation of the rollers 7. Therefore, each roller 7 has a pulley 9 that is engaged with the belt transmission 16, provides a constant rotation these rolls 7 despite their location while moving across the screening sieve 3. The rotation of the blades of the brushes 8 simultaneously with their movement cleans the screening screen 3. In this case, the bristles of the brushes pierce the cells of the sorting Full-time screen 3. Therefore, except for the adhered particles provide said brush cleaning sieve cell 3 and from become stuck vshih particulate material that enhances the cleaning efficiency of sorting sieves 3 as a whole. The brushes can be located along the helix of the rolls 7, this

The 18 in-18 trays are provided for from 25 to provide maximum force.

water fractions.

The device works as follows.

The actuator 5 is turned on and the sorting screen 3 starts reciprocating oscillatory movements. From the hopper 4, the supply of the twisted tea leaf to be sorted begins. Due to the fluctuations, the tea leaf is moved along sorting sieve 3 and gradually sifted. The screened fraction passes onto tray 3, which is located under screening screen 3, and is poured out of the device, and the slice fraction is moved to the end of screening screen 3 and is unloaded from the device into another tray 18, from where it goes to the next operation. When sorting the twisted tea leaf, its particles get stuck in the cells of the sorting screen 3. Therefore, the drive shaft 10 is rotated to clean the screen 3. This causes the rotation of the drive pulley 12 and, through a bevel gear, screws 14. Rotation of the screws 14 causes the nuts to move through them. 15 and, respectively, parallel movement of the rolls 7 across the sorting screen 3. At the same time, the drive pulleys 9 mounted on the rolls 7 also rotate. Pulley 12 rotates

0

five

0

five

0

the effects of these brushes on the sieve 3 and, accordingly, increase the reliability. Due to the fact that the twisted tea leaf is characterized by considerable stickiness and tenacity, individual tea leaves can get stuck in the blades of the x-brushes 8. To prevent this phenomenon, the strings 17, stretched from the sides, parallel to the rollers 7, ensure their cleaning. The high cleaning efficiency of sorting screen 3 ensures high sorting efficiency. After reaching the side of the screening screen 3, the rollers 7 act on a reversing mechanism (not shown) and switch the drive shaft 10 to reverse. This causes the movement of the rolls 7 in the opposite direction and their simultaneous rotation. Consequently, the cleaning rollers 7 are returned to the initial position, at the same time the cleaning process of the sorting screen 3 is completed. When you reach the end position, the reversing mechanism switches again and the process repeats continuously.

Claims (2)

1. A device for sorting the twisted tea leaf, which includes an oscillating inclined sorting screen, vane cleaning rollers, rotatably fixed on both sides along the sieve surface, rotatable, loading hopper, trays for withdrawing fractions, characterized in that quality sorting, it is equipped with a mechanism for lateral movement and rotational movement of the cleaning rolls and strings for removing the processed material from the rolls, the sorting sieve made in the form of a plate, and the mechanism of the cross np sixteen eleven 0 five displacement and rotational movement of the rolls - in the form of longitudinal drive and driven shafts, kinematically connected to the rolls by means of a screw-nut pair and a belt drive, each string being strengthened along the roll with the possibility of interaction with its blades. 2. The device according to claim 1, about tl and - so that the blades of the cleaning rolls are made in the form of a brush located along a helix. YV, Phie.1 U FIG. 2 J5 Fig.Z