Airflow screening is a device that uses airflow as a power source to finely screen powdered materials.
1、 Working principle
The air flow screen uses high-speed air jet to make the material fluidized, and under the action of the air flow, the material is screened on the screen. Fine particles smaller than the sieve aperture pass through the sieve with the airflow, while coarse particles larger than the sieve aperture are blocked on the sieve and discharged under the action of gravity. The screening process of the airflow sieve mainly relies on the kinetic energy of the airflow and the inertia of the material, and has the characteristics of high efficiency and accuracy.
2、 Structural composition
Feeding device
Airflow jet system
Composed of a fan, air duct, and nozzle. The fan generates high-speed airflow, which is transported to the nozzle through the air duct. The nozzle sprays the airflow onto the screen, making the material fluidized.
screen
It is the core component of the airflow screen, usually made of materials such as stainless steel wire mesh or nylon mesh. The aperture of the sieve is selected according to the screening requirements, which can achieve the screening of materials with different particle sizes.
Discharge device
control system
Control the operation of the airflow screen, including the start and stop of the fan, adjustment of the feed speed, and vibration of the screen mesh. The control system can achieve automated operations, improve production efficiency and screening accuracy.
3、 Characteristics and advantages
Efficient screening
The airflow screen utilizes the kinetic energy of the airflow for screening, with high screening efficiency, which can greatly improve production efficiency.
It can accurately screen fine particle materials with a screening accuracy of over 95%.
Wide range of applications
Suitable for screening various powdered materials, such as chemical, pharmaceutical, food, metallurgical and other industries.
Effective screening can also be carried out for viscous and easily agglomerated materials.
Easy to operate
The structure of the airflow screen is simple, easy to operate, and does not require complex maintenance and upkeep.
High degree of automation, capable of unmanned operation.
environmental protection and energy conservation
There is no mechanical vibration or noise during the screening process, which is environmentally friendly.
The airflow screen uses airflow as power, with low energy consumption and energy conservation.
4、 Application Fields
chemical industry
Used for screening chemical raw materials such as pigments, dyes, coatings, plastics, etc.
Fine screening of chemical products to improve product quality.
pharmaceutical industry
food industry
Screen food ingredients such as flour, sugar powder, seasonings, etc.
Ensure the taste and quality of food.
Metallurgical industry
Sieve metallurgical powders such as iron powder, copper powder, aluminum powder, etc.
Improve the quality and performance of metallurgical products.
In short, as an efficient and precise screening equipment, airflow screening has been widely used in various industries. It has the characteristics of efficient screening, wide applicability, simple operation, environmental protection and energy saving, providing strong support for the production and development of enterprises.