Negative pressure pneumatic conveying and collecting system

Abstract

The invention relates to a negative-pressure pneumatic conveying and collecting system which comprises a quantitative variable-frequency feeder, a feeding and sending acceleration device, a conveying pipeline assembly, a pipeline switching valve, a pipeline dredging valve, a wear-resisting elbow, a negative-pressure solid-gas separator and a vacuum pump. The end of the conveying pipeline assembly is connected with the negative pressure solid-gas separator, and the upper end of the negative pressure solid-gas separator is connected with the vacuum pump. The cement material conveying device can solve the problems that when cement materials are conveyed by existing equipment, conveying modes such as conveying belts, scrapers and automobile in-field transfer are usually adopted, the phenomenon of dust raising is prone to occurring when the cement materials are transferred in the field, secondary pollution of the cement materials is caused, and meanwhile when the cement materials are conveyed by the existing equipment, the cement materials cannot be conveyed by the existing equipment. The problems that the conveying effect is poor, materials cannot be effectively filtered, equipment is difficult to overhaul and needs to be shut down for maintenance, the labor intensity is high, and the normal production efficiency is affected are solved.

Description

technical field [0001] The invention relates to the field of material conveying, in particular to a negative pressure pneumatic conveying and collecting system. Background technique [0002] Pneumatic conveying systems are widely used in the transportation of some raw materials and powders in factories such as petroleum, chemical industry, metallurgy, building materials, grain and oil, and pharmaceuticals. Pneumatic conveying uses the energy of airflow to transport powdery and granular materials along the direction of airflow in a closed pipeline, which is a specific application of fluidization technology. The structure of the pneumatic conveying system is simple and easy to operate. It can be used for horizontal, vertical or inclined conveying. During the conveying process, it can also perform physical operations such as heating, cooling, drying and air classification of materials or certain chemical operations. The main features of pneumatic conveying are large conveying ...

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Problems solved by technology

[0005] The present invention can solve the problem that the existing equipment usually adopts conveyor belt, scraper machine, car in-field transfer and other conveying methods when transporting cement materials, which leads to the phenomenon that the cement materials are prone to dust when the cement materials are transferred in the field, resulting in cement material. Secondary pollution. At the same time, when the existing equipment is conveying cement materials, the conveying effect is poor, and the materials cannot be filtered effectively. Moreover, it is difficult to maintain the equipment and needs to be shut down for maintenance. The labor intensity is high, which affects the normal production efficiency and other problems.

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