Rod mill powder-sieve linkage system

Abstract

A system formed by linking a rod mill and a powder sieve comprises a blower (1), a rod mill (3), a fine powder screening machine (2) and a material aggregation device that are communicated sequentially. The material aggregation device comprises a cyclone material aggregator (8) and a dual-helix vertical powder mixer (4). The cyclone material aggregator (8) has a feeding port being in communication with a fine material discharging port of the fine powder screening machine (2) through a feeding pipe (5), has a bottom discharging port being in communication with the dual-helix vertical powder mixer (4) through a wind-closing feeder (21.2), and has a top opening being in communication with an air input port of a pulse dust collector (7) through a hose (6). The pulse dust collector (7) has an air output port being in communication with a draft inducing fan (9), and has an ash output port being in communication with the dual-helix vertical powder mixer (4) through the wind-closing feeder (21.3). A bottom discharging port of the fine powder screening machine (2), a feeding port of the rod mill (3), and a blowing port of the blower (1) are in communication. A discharging port of the rod mill (3) is in communication with a sieving chamber of the fine powder screening machine (2). The system can realize continuous large-scale production of ultrafine powders of Chinese herbal medicines at room temperature without using any additional drying device.

Description

technical field [0001] The invention relates to ultrafine pulverization technology, in particular to a rod mill powder sieve linkage system for pulverizing various Chinese medicinal materials. Background technique [0002] Ultrafine pulverization technology is a new technology developed on the basis of powder science, along with the continuous improvement of pulverization process, breakthroughs in pulverization theory and related disciplines, and the successive emergence of new pulverization equipment. Compared with the processing and production methods of traditional Chinese medicines, ultrafine pulverization technology has the advantages of cost saving, easy application, increased drug absorption rate, and improved bioavailability. At present, mechanical pulverization and airflow sieving classification are commonly used in the preparation of traditional Chinese medicine ultrafine powder. Rod mill crushing is a kind of mechanical crushing method. Although the crushing effi...

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Problems solved by technology

Rod mill crushing is a kind of mechanical crushing method. Although the crushing efficiency is high, it cannot separate the powder that meets the quality requirements in an effective and timely manner. It can neither meet the needs of continuous large-scale production nor reduce the energy consumption in the production process.

The commonly used airflow sieving classification method is a new type of classification method. The biggest advantage of the airflow sieving machine is to use the airflow carrying the powder to impact through the screen for effective separation. However, for some micron-sized materials with light weight and small particle size When grading, it will accumulate on the screen to form agglomerates, which will cause the screen to be blocked, resulting in the failure of the screening work, which greatly affects the screening efficiency and cannot meet the needs of large-scale industrial production.

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