The system is comprised of a set of supplementary equipment used alongside a mesh screen to prevent blockage and blinding of mesh apertures, contributing to the overall efficiency of the screening process. There are many benefits to using these systems, the key to understanding these is knowing how ultrasonic systems work.
How do ultrasonic screens work?
An ultrasonic system uses a generator box connected to an externally mounted converter. The generator creates a high frequency signal that the converter changes into an ultrasonic sound wave.
The ultrasonic wave oscillations are transferred to the mesh screen where they are distributed to create an ultrasonic vibrating screen. These vibrations of the mesh cloth reduce the frictional resistance between powder and the screen. This reduces the tendency towards blocking and blinding, whilst fluidising the product so it flows through the mesh more easily.
5 Benefits of ultrasonic systems include:
1. Increased Efficiency: Ultrasonic vibrations help to ensure consistent throughput rates by improving the movement of particle sizes of <300 micron through the mesh, resulting in faster, more effective screening – up to 300% more efficient in some cases. Increasing the efficiency leads to lower waste product.
2. Improved Accuracy: Ultrasonics help to prevent blockage and blinding of mesh apertures, reducing the risk of oversize or undersize particles passing through the mesh screen, resulting in more accurate separation of materials improving quality control of the product.
3. Longer Mesh Life: Ultrasonics prevent the mesh from becoming clogged or damaged during the screening process which reduce the frequency of mesh replacement. This leads to a maintenance cost saving. Sievmaster Ultrasonic systems supplied by Farleygreene use a continuously varying wave, known as ‘frequency variation’, rather than ‘single wave’ resonance frequency. This better dissipates the build-up of heat in the mesh, known as ‘hot spots’, which can run the risk of damaging the mesh.
4. Reduced Downtime: By ensuring consistent throughput rates, ultrasonics help to reduce downtime and maintenance costs associated with sieving machines by keeping the mesh clear. Sievmaster Ultrasonic components are hygienically situated outside the product flow, further reducing the requirement for cleaning downtime. Systems supplied by Farleygreene are self-tuning, finding the resonance frequency of the system they are attached to, meaning no operator input is needed when switching between different aperture mesh rings.
5. Environmentally Friendly: Ultrasonics fluidise the product and prevent it from building up on the mesh wires. This reduces the need for additional processes, water usage, or harsh chemicals to clean the mesh screen, as well as reducing the amount of wastewater that needs to be disposed of, resulting in a less wasteful, more environmentally friendly screening process.
Farleygreene’s Sievmaster Ultrasonic System is available with a variety of different options depending on your requirements.
Contact us today to find out more about how Farleygreene ultrasonic systems can help improve the efficiency of your sieving and screening process.