Air-flow Sifter Machine

Product description

Airflow screen is a powerful equipment in the field of screening. It has a compact structure and is composed of a feed port, a screen and an air flow generator. At work, the material enters through the feed port, and at the same time, the air generator creates a high speed air flow, and the two are quickly mixed. Under the strong airflow, the material is evenly dispersed, suspended, and rushed to the screen. Particles smaller than the sieve hole are pushed through the screen by the air flow to become the underscreen material; Large particles are intercepted and expelled along specific paths. Its screening efficiency, can handle a large number of materials, accuracy can also be adjusted according to demand. Moreover, it occupies a small area, applies more materials, less dust pollution, and has a high degree of automation, playing a key role in chemical, food, medicine and other industries.

Working principle

When the airflow screen works, the material enters the screening chamber through the feed port. At the same time, the high-speed air generated by the fan is also injected into it and fully mixed with the material to form a gas-solid two-phase flow. Under the strong action of the air flow, the material is blown and suspended, and the particles are separated from each other and evenly dispersed in the air flow field. As the mixture flows to the screen, the material with a particle size smaller than the screen hole will pass through the screen smoothly under the air flow and become the product discharged under the screen; The material with a particle size larger than the sieve hole is blocked by the screen and cannot pass through. These large granular materials on the screen surface, continue to be washed by air flow, tumbling, and finally discharged through the discharge port, so as to achieve accurate and efficient screening and grading of materials according to particle size, and complete the entire screening and diverting process.

Product characteristics

The airflow screen has many advantages, as follows:

High screening efficiency: the effect of air flow makes the material in a suspended state, can be fully dispersed, avoid the problem of material agglomeration and blocking the screen, so that the screening process is smoother, and greatly improve the processing capacity per unit time.

High screening accuracy: By precisely controlling the airflow parameters and selecting the appropriate screen, the accurate screening of different particle sizes of materials can be achieved to meet a variety of high-precision screening needs.

Wide range of application: whether it is fine chemical powder, food additives, or metal powder with a certain hardness, ore powder, etc., the air sieve can be effectively screened, and has good adaptability to different properties and particle size range of materials.

Good environmental performance: the airflow screen is usually operated in a relatively closed system, which reduces the dust exposure, reduces the pollution of the production environment, and is conducive to maintaining a good working environment and protecting the health of the operator.

Simple equipment maintenance: its structure is relatively simple, there is no complex transmission parts and wearing parts, daily maintenance work is more convenient, can reduce the maintenance cost of equipment and downtime, improve production efficiency.

Application

Chemical industry: can be used for screening of various chemical raw materials, such as plastic particles, rubber powder, paint pigments, fertilizers, activated carbon, etc. For example, in the production of plastics, airflow screens can grade plastic particles to ensure uniform product size and improve product quality.

Food industry: Suitable for screening of flour, starch, milk powder, powdered sugar, condiments, food additives and other materials. Taking flour production as an example, the airflow screen can remove impurities and coarse particles in flour to ensure the fineness and quality of flour.

Pharmaceutical industry: It has good screening effect for pharmaceutical intermediates, raw materials, pharmaceutical excipients, Chinese medicine powder, etc. For example, in the pharmaceutical process, the airflow screen can screen the drug powder into different particle sizes, which is convenient for the production of subsequent preparations and ensures the stability and effectiveness of the drug.

Mining: It can be used for the screening of metal mineral powder and non-metal mineral powder, such as quartz sand, kaolin, graphite powder, aluminum powder, etc. In the processing of kaolin, the air flow screen can remove the coarse particles and impurities, and improve the purity and whiteness of kaolin.

Other industries: Can also be used in abrasives, refractories, electronic materials, 3D printing materials and other fields. For example, in the production of 3D printing materials, the airflow screen can accurately screen metal powder or polymer material powder to meet the strict requirements of 3D printing for material particle size.