Vibration conveying and flow guide screening device used before tobacco material winnowing

Abstract

The invention provides a vibration conveying and flow guide screening device before tobacco material winnowing. The vibration conveying and flow guide screening device comprises a vibration conveying groove, a primary material shaping flow guide unit, a material flattening and uniformizing unit and a secondary material shaping flow guide unit are arranged in the vibration conveying groove, and the discharging end of the vibration conveying groove is connected with a particle material screening unit. The tail end of the particle material screening unit is provided with a material flow guide layering unit, the primary material shaping flow guide unit and the secondary material shaping flow guide unit each comprise a plurality of V-shaped flow guide blocks of different specifications, the tail portions of the V-shaped flow guide blocks face the feeding end of a winnowing machine, and the head portions of the V-shaped flow guide blocks face an upstream material supply end. The material flattening and uniformizing unit is a triangular prism-shaped uniformizing plate, a plurality of screening holes are formed in the surface of the particle material screening unit, and the material guide layering unit comprises a horizontal sawtooth comb plate and a slope sawtooth comb plate. The device can solve the phenomenon that cut tobacco is clotted, caked and hardened when materials enter the winnowing machine, the problem that a material inlet of the winnowing machine is blocked is solved, and the sliver rejection rate is further increased.

Description

technical field [0001] The invention relates to the technical field of tobacco processing, in particular to a device for vibrating conveying and guiding and screening tobacco materials before air separation. Background technique [0002] In the shred production process of cigarette industrial enterprises, winnowing machine, as one of the key equipment in the tobacco processing process, is mainly used for different processing procedures of tobacco materials such as tobacco sheet, shredded tobacco, tobacco stem, shredded stem, and expanded shredded tobacco. Carry out the key links of the wind screening process, in which the air separation machine is used after the expanded shredded tobacco moisture recovery process section, shredded leaf or cut stem expansion equipment, and the agglomerates (agglomerates, washed balls, silk clusters, etc.) and most of the stems can be separated. Effectively separated to improve the purity of shredded leaves or stems. [0003] The working prin...

AI Technical Summary

Problems solved by technology

However, in actual production, when the material is transported from the upstream process to the input port, due to the accumulation form of the material, the structure of the shreds, the conveying state (conveyor belt and vibrating tank conveying alternately) and the change of moisture, the material to be air-selected When the machine is running, due to the wind-driven principle to accelerate the change of water, the phenomenon of agglomeration, agglomeration, and hardening of the leaf silk is exacerbated. The intertwining and wrapping of the leaf silk and the stems greatly reduce the function of floatation and flotation, resulting in downstream processes. The rate of stems in the materials is too high, which seriously affects the process control and product quality, especially when the agglomerate materials accumulate too much at the inlet of the winnowing machine, it may cause material blockage and shutdown, causing problems in the process control of the entire production line

[0005] Chinese patent (Application No.: 202010566546.9) discloses a shredded tobacco shaping device. The device provides power supply and transmission control by adding multi-stage claw wire rollers at the feed port of the winnowing chamber and connecting a stepping motor. The stepping motor is installed Outside the air separation room, it is used to solve the problem of poor separation effect of the existing air separation machine without changing the negative pressure wind force

[0007] The above-mentioned published patent documents are all about modifying or adding devices to the air separator in the material "processing" stage to realize the loosening of the external force of the material and the supplement of the air separation function, but the main optimization and improvement are to add devices inside the air separator. With the staggered rotation of pairs of openers or claw rollers, the effect of loose shredded tobacco is achieved in the form of throwing up and down, and staggered rolling. This method will aggravate the breaking and consumption of shredded tobacco to a certain extent

Moreover, due to the need to install and modify the interior of the original winnowing machine, it will inevitably cause changes in the aerodynamic layout of the winnowing box, and at the same time affect the integrated design of the whole machine

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