Complete-air-throwing air separation system

Abstract

The invention relates to a complete-air-throwing air separation system. The complete-air-throwing air separation system comprises an air separation bin (2) and an air throwing pipe (9), wherein a light material outlet (22) is formed in the top of the air separation bin (2), and a heavy material outlet (21) is formed in the bottom of the air separation bin (2); one end of the air throwing pipe (9)is connected to the sidewall of the air separation bin (2), and the other end of the air separation bin (2) is connected to an air outlet port of a circulation fan (4); and a charge port (91) is further formed in the sidewall of the air throwing pipe (9). Preferably, a gas-solid separator (3) is arranged at the downstream part of the light material outlet (22), and a gas channel outlet of the gas-solid separator (3) is connected to an air inlet port of the circulation fan (4) via a circulation air pipe (8). The complete-air-throwing air separation system is capable of realizing flexible material throwing, and carrying out unwinding on a material wound body by virtue of high-speed air throwing, so that the air separation efficiency is increased; and use for a high-speed belt can be avoided,so that the problem of deviation of the high-speed belt is avoided, the complexity of the equipment is lowered, and the maintenance cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of air separation equipment, and in particular relates to a complete air throwing air separation system, which is suitable for tobacco processing and leaf threshing air separation process. Background technique [0002] The principle of airflow aeolian separation is to float a certain material in the airflow, set a certain airflow velocity, and make the lighter part of the material whose suspension velocity is lower than the set airflow velocity move upward, while the suspension velocity of the material is higher than the set airflow velocity The heavier part of the material moves downwards, so that the material is separated into two parts, heavier and lighter, in the airflow. [0003] The principle of air separation is widely used in tobacco processing, including different forms of use in leaf threshing and redrying, silk making, and rolling processes. Leaf threshing air separation is the core process of lea...

AI Technical Summary

Problems solved by technology

This kind of high-speed belt throwing material can reduce the crushing because the material is not in direct contact with the metal rotating wheel, but there are also some defects: the back-carrying material is serious, resulting in waste of raw materials; in order to achieve the involved material throwing speed, the belt pulley must rotate at a high speed. It is prone to belt deviation faults and requires a large amount of maintenance; the design of high-speed feeding requires a large volume of air separation equipment, etc.

[0005] Some companies have begun to use wind throwing to assist high-speed belt throwing, see the attached figure 2 , it sets the air pipe 6 below the interface between the high-speed belt 1 and the air distribution warehouse 2, and uses the side wind to further speed up the thrown materials and blow them away. It is still difficult to fully disperse highly entangled materials (such as the entanglement formed by several stems wrapped by several curly tobacco leaves or shredded tobacco) due to the expansion and sharp decrease of wind speed.

Further increasing the wind speed of the lateral wind will cause huge energy consumption, and second, it will seriously interfere with the wind speed and wind field distribution of the mainstream wind blowing from bottom to top in the air distribution chamber, causing wind field disorder and interfering with wind distribution.

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