Farleygreene is our UK-based distribution partner.
Their mission is to create and construct top-notch industrial sieves for manufacturers worldwide. Their product range encompasses Vibratory and Ultrasonic machines, which are designed to provide quick and efficient screening, allowing for the removal of oversize particles.
In cases where the product being screened has a high level of stickiness, grease, or fineness, it can be beneficial to supplement the vibratory sieving machine with an ultrasonic system to maximise the screening efficiency of these challenging products.
How do ultrasonic screens work?
An ultrasonic system typically consists of a generator box that is connected to an externally mounted converter. The generator produces a high-frequency signal which the converter converts into an ultrasonic sound wave.
The ultrasonic waves are then transmitted to the mesh screen where they are evenly distributed to create an ultrasonic vibrating screen. These vibrations of the mesh cloth help to minimise the frictional resistance between the powder and the screen, thereby reducing the risk of blockages and blinding. Additionally, they fluidise the product, facilitating its flow through the mesh screen.
The 5 Benefits of ultrasonic systems
- Increased efficiency: One of the significant benefits of using ultrasonic systems is their ability to enhance screening efficiency. By promoting the movement of particle sizes <300 microns through the mesh, ultrasonic vibrations help ensure consistent throughput rates, resulting in faster and more effective screening. In some cases, this can lead to a significant increase in efficiency, up to 300%, thus reducing waste products.
- Improved Accuracy: Another key advantage of using ultrasonic systems is their ability to improve screening accuracy. By preventing blockages and blinding of mesh apertures, ultrasonics reduce the chances of oversize or undersized particles passing through the mesh screen. This, in turn, leads to a more accurate separation of materials and enhances quality control of the product.
- Longer Mesh Line: Ultrasonic systems also contribute to longer mesh life by preventing mesh clogging and damage during the screening process, which reduces the frequency of mesh replacement and leads to cost savings on maintenance. At Farleygreene, the Sievmaster Ultrasonic systems use a continuously varying wave, also known as “frequency variation,” instead of a single wave resonance frequency. This approach helps to dissipate the buildup of heat in the mesh, which can lead to “hot spots” and potentially damage the mesh.
- Reduced Downtime: Ultrasonic technology plays a crucial role in reducing downtime and maintenance costs associated with sieving machines by maintaining a clear mesh and ensuring consistent throughput rates. With Sievmaster Ultrasonic components positioned outside the product flow in a hygienic manner, the need for cleaning downtime is further minimised. Farleygreene’s self-tuning systems automatically detect the resonance frequency of the attached system, eliminating the need for manual operator input when changing aperture mesh rings.
- Environmentally Friendly: The application of ultrasonic technology in sieving machines has the added benefit of fluidising the product, which helps to prevent build-up on the mesh wires. As a result, there is a reduced need for extra cleaning processes, water usage, and the use of harsh chemicals to maintain the mesh screen. This not only promotes an environmentally friendly screening process but also minimises the amount of wastewater that requires disposal, making the entire process less wasteful.
