Sieves & Screens Repeat order
A prominent UK manufacturer of high grade ceramic powders for use in the medical, laser, semiconductor, defence and solar markets came to Farleygreene with an application to grade its high value raw material.
The customer required a means of decanting product from a container, through a fine mesh screen and into a small bottle underneath the machine.
The problem was screening the highly abrasive material without excessive vibration if possible. Farleygreene completed various tests on the product and found that the best solution was to use their ‘Sonotech’ ultrasonic system with no vibration from a conventional motor driven system. The product could be easily screened at 150 micron aperture with only the ultrasonic’s running.
Farleygreene then set about designing a unit around the test data to provide an easy to clean, ergonomic system. The final design needed to fit inside a small production area and provide for all the feed control that the customer required, and the consideration of the operator when tipping the powder into the unit.
The final design utilised a dusthood assembly at the top, feeding into an integral hopper terminating in a hygienic manual butterfly valve. This allowed the operator to tip the entire contents into the hopper and then open the valve to meter the product on to the screen below. Next the sieving operation was carried out by a 400mm diameter ultrasonic sieve unit, with quick release clamping arrangements to allow quick and easy strip down for cleaning. It was part of the design brief that the whole system should be able to be cleaned to avoid batch contamination. The sieved product then filled into a lower 20 litre hopper which terminated in a 32mm butterfly valve with funnel outlet, this created a nozzle for the operator to fill small glass bottles with the graded material.
The sieve was supplied in an all 316L mirror polished execution with full 3.1B certification as well as validation documentation.
The first unit was so well received by the customer that more units are now required across the group’s sites.
For more information contact Farleygreene on tel: +44 (0) 1252 322 233 or visit:
www.farleygreene.com
www.solidsandbulk.co.uk March 2011 • Solids & Bulk Handling 51
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56