Application of Air Jet Sieve in the Pharmaceutical Industry

In recent years, with the increasing requirements for the precision of powder material sieving in industries such as pharmaceuticals and food, there is a pressing need for improvement and upgrading of air jet sieve equipment.

For example, in the sieving process of fine powders with a particle size less than 4000um, such as fine powders in traditional Chinese and Western medicines, phenomena such as agglomeration, static electricity, and blockage of air jet sieve holes are common. Traditional vibrating sieves are unable to accurately and quickly sieve fine powders of materials like traditional Chinese and Western medicines, glass fiber fine powder, etc. The air jet sieve is designed to meet the rapid and accurate sieving needs of fine powders, satisfying the requirements for powder airflow sieving. It is suitable for the sieving and classification of powder materials in industries such as pharmaceuticals, food, rubber, plastics, machinery, and mining.

Theworking principleof the air jet sieve is as follows: the air jet sieve generates negative pressure through a vacuum cleaner, and after the air pressure generates sieving airflow through air jetting technology, it passes through the sieving nozzle. This negative pressure is converted into air jetting force, which pushes particles toward the sieving cover, causing them to collide with the cover to eliminate agglomeration. Subsequently, dispersed particles are attracted to the standard sieve mesh by negative pressure, with large particles staying on the surface of the standard sieve mesh and small particles smoothly passing through, thus achieving the purpose of air jet sieving.

About Air Jet Sieve

As a specialized instrument, the air jet sieve must have the characteristics of simple operation and reliable test results. In the journey of improving product performance, efforts need to be continuous in increasing comfort while enhancing analysis testing efficiency and speed. The "Chinese Pharmacopoeia 2015 Edition" stipulates that for samples with a particle size less than 75μm, the air jet sieving method should be used. Refer to the "Methods for Determination of Particle Size and Particle Size Distribution" in the Chinese Pharmacopoeia 2015 Edition.

Due to the easy agglomeration and blocking of ultra-fine powders on sieve meshes, the air jet sieve can be one of the choices for sieving fine powders. In such cases, the air jet sieve can be very effective. The entire system includes the main unit (with a rotating nozzle) and an industrial dust collector connected to the main unit. When the dust collector switch is turned on, a vacuum is generated inside the sieve, and the high-speed airflow from the narrow nozzles blows over the sieve mesh. The agglomerated powder particles on the sieve mesh and cover are instantly dispersed by the airflow, and then pulled back to the sieve mesh by the vacuum generated by the dust collector. The result is the effective and rapid separation of fine powder; coarse powder remains on the sieve mesh and is reweighed after sieving.

Features of TungKuLa Air Jet Sieve

Efficient Operation

All standard and evaluation functions are integrated into the TungKuLa air jet sieve AS-200 Pro. The design of the system interface takes into account user operations, striving for simplicity and reliability. This makes the operation faster and more comfortable while reducing the need for additional auxiliary equipment.

Automatic Negative Pressure Control

TungKuLa air jet sieve AS-200 Pro integrates an automatic controller to monitor the pressure inside the sieving chamber, thus monitoring the dispersion effect of the nozzle on the material. This controller helps maintain pressure stability throughout the sieving process, meaning more efficient, reliable, and comfortable operation.

Compatibility with Both Imported and Domestic Sieve Meshes

Compatible with both domestic (200mm) and imported (203mm) standard sieve meshes, providing flexible choices for sieve meshes.

Intelligent Determination of Sieving Time

The application of the eTimeSave function ensures that users choose the correct sieving time. Sieving time is a crucial parameter in the sieving process – neither too long nor too short. This will determine whether the sieving is successful, i.e., whether the sample is sieved or the sieving result is repeatable.

Technical Specifications

1. Compatible with both domestic (200mm) and imported (203mm) standard sieve meshes, providing flexible choices for sieve meshes.
2. Adjustable negative pressure from 800Pa to 5000Pa, suitable for different material requirements for negative pressure.
3. Single-sample processing capacity of 5g-100g, meeting the needs of experimental research and batch quality testing simultaneously.
4. Compatible with external USB keyboard and mouse operation, capable of transmitting results through Wi-Fi to a mobile phone or connecting to a printer for printing.
5. Uses the Rosen–Ranlei function for precise calculation of particle size distribution from 0.01% to 99.99%.
6. Equipped with automatic sieve mesh recognition function, eliminating the need for manual recording of sieve mesh specifications by operators.
7. Stores ≥10,000 test results with 20GB storage space.
8. Adjustable nozzle speed from 1 to 99 revolutions, suitable for various sieving scenarios.
9. Pressure monitoring, PID precise control of pressure difference, timely adjustment of internal airflow in the chamber.
10. Sieving range of 5-4000um, covering the majority of material particle sizes.
11. Overlay analysis, analyzing five stored experimental results simultaneously.
12. Intelligent touch screen, 10-inch anti-glare. Can be read without obstacles in low light and from multiple angles.

13. Uses inspection-grade sieve meshes certified to ASTM, ISO, and JIS standards.