Method for strengthening compactness of fine powdery material during vertical downward seal transportation

Abstract

The invention relates to a method for strengthening the compactness of a fine powdery material during vertical downward seal transportation. Ventilation openings are arranged into rows and columns along the axial direction of a transporting device (1); microporous metal plates or metal mesh plates cover the ventilation openings; the outer sides of the ventilation openings are sealed by sealing boxes; the outer walls of all the sealing boxes are connected with a vacuumizing tube (4) and collected on a two-way change valve (6); the two-way change valve (6) is connected with a vacuumizing machine unit (5); the sealing boxes and the microporous metal plates or the metal mesh plates form an independent vacuumizing device (3); and the vacuumizing machine unit (5) is started to vacuumize the two-way change valve (6). When the fine powdery material (2) naturally drops from the upper end and the lower end of the transporting device (1) to the inlet of deep-processing equipment (7), the vacuumizing device in the negative pressure state can absorb part of air and dust contained in the fine powdery material through the vacuumizing tube, and the compactness of the fine powdery material arriving at the inlet of the deep-processing equipment can be strengthened.

Description

technical field [0001] The invention belongs to the technical field of material vacuuming, in particular to a method for enhancing the compactness of fine powder materials when they are conveyed vertically downward along a conveying device. Background technique [0002] With the rapid development of my country's industrial technology, the demand for conveying process equipment for various fine-grained powder materials (hereinafter referred to as fine powder materials) is also increasing. In the process of sealed vertical conveying of fine powder materials, due to their small particle size, a lot of air will be mixed in the conveying process, which will greatly reduce the unit conveying capacity of the sealed conveying device with the same cavity volume, resulting in the conveying of a small amount of fine powder. Powdered materials require a large conveyor. How to increase the conveying capacity of fine powder materials and reduce the gas content of fine powder materials du...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the excessive air content in the fine powder material, the volume of the conveying cavity required for vertical sealed conveying is too large

[0005] 2. Due to the large amount of air contained in the fine powder material, too much gas needs to be discharged when it is vertically sealed and transported into the lower deep processing equipment, and the difficulty of gas discharge requires high sealing requirements for the deep processing equipment

[0006] 3. During the operation of the lower-end deep processing equipment, the gas is easily mixed with fine powder materials and discharged into the atmosphere, resulting in air pollution

[0007] How to enhance the compactness of the fine powder material when it is conveyed vertically downward along the conveying device has not been reported yet.

Images