The machine used for sieving is a variety of devices designed to separate particles by size, including air jet sieving machines, throw-action sieving machines, tapping sieving machines, mechanical sieve shakers, and electromagnetic sieve shakers. Each type operates on different principles and is suited for specific applications.
Air Jet Sieving Machine: This machine is used for dry sieving products in the form of dust or granules, with a size range from 5 to 4000 microns. It operates by using an air jet that drags fine particles through a sieve, aided by a vacuum cleaner that generates controlled low pressure. Accessories like a cyclone can be added to recover the material dragged by the air flow. This machine is essential in industries processing powdered products due to its reliability and repeatability in quality control processes.
Throw-Action Sieving Machines: These machines overlay a vertical throwing motion with a slight circular motion, distributing the sieving sample over the whole sieving surface. The particles are accelerated vertically, carrying out free rotations in the air and alternating their positions. This action can help particles that initially do not fit the sieve mesh to pass through if their dimensions change during the motion.
Tapping Sieving Machines: In these machines, a horizontal circular motion is overlaid with slight vertical motions triggered by a tapping impulse from underneath. This mechanism helps in the sieving process by agitating the particles to pass through the sieve mesh.
Mechanical Sieve Shakers: These devices utilize several moving parts to oscillate, tap, and agitate the sieve stack, helping particles find openings in the mesh. Although they may not have the latest technology, they are user-friendly and comply with various industry standards.
Electromagnetic Sieve Shaker: This type employs an innovative three-dimensional elliptical motion to facilitate particle movement throughout the stack of test sieves. Unlike mechanical sieve shakers, electromagnetic shakers are quieter during operation as they do not rely on numerous moving parts.
All these sieving machines play crucial roles in various industrial and trade processes, ensuring accurate analysis of raw materials, additives, and supplies, which is essential for producing high-quality products.
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