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Application Notes for Sheet Filter Presses
Gusmer Enterprises Cellupore CSF Filter Sheet Series Gusmer Enterprises’ developed range of filter sheet media, the Crystalline Silica Free (CSF) filter series, has been designed and formulated to be free of crystalline silica* yet offer the same outstanding performance of conventional filter sheet media. Gusmer’s CSF gradient density filter sheets are a composite of the finest cellulose pulps and crystalline silica free filter aids. Produced with a controlled porosity, the CSF filter sheets have superior throughput capacity and excellent retention capabilities. The CSF series can be relied on to remove micron and submicron particulate such as gross solids, haze constituents, yeast, bacteria and colloids on a consistent basis while preserving color, aromas and flavors in beverage products. *Based on OSHA mixture exception of <1% crystalline silica for natural DE.
Troubleshooting Similar to other separation and filtration equipment, regular cleaning, maintenance and inspections should be conducted on filter presses. There are a number of common problems that can be resolved with regular inspection, maintenance and training.
Operation Typically, a filter press consists of a series of plates equipped with inlet and outlet ports. Depending on the type of press, the ports may be internally or externally ported. When the press is closed and tightened through manual or hydraulic means, the plates, gasketed ports and sheets are closed to form a tight seal for feed and filtrate passage. The unfiltered product passes through the inlet ports of the plate to the depth filter sheet. The depth filter sheet separates the undesired contaminant and allows the cleaned product to flow to the outlet plate. The outlet plate distributes the cleaned product to the discharge or outlet port. Advantages of Filter Presses • Very versatile -- full range of filtration applications • L arge filter area and ability to increase additional surface area with more plates • F lexible, modular design with ability to conduct two stage filtrations • G ood process scalability from bench to production scale • Consistent and reliable filtration results • Low maintenance costs
Potential Issue or Concern Worn gaskets at inlet or outlet plates
Result
Resolution
Product loss
Replace gaskets. Use supplier information for proper thickness.
Insufficient press
Product loss
Properly tighten press with manual or hydraulic closure. Use of leverage bar may be needed.
clamping
Application Guide
Missing guide rods Product loss
Manually align sheets. Purchase replacement guide rods.
Misaligned filter
Lower throughput,
Depth filter sheets may be placed in wrong direction. Place cockled or rough side of filter towards the inlet plate. Align sheet parallel with plate.
sheets
product loss
High pressure/
Less efficient filtration
Ensure consistent product
excessive flow rates (premature blinding,
flow at recommended less retention, contaminant flow rate and differential break-through, product loss) pressure for filter grade.
Filter Press Flow Diagram (top view)
Outlet Plates
Outlet
Port
5.0
7.0
643
600
6.0
Stationary stainless steel plate
Sliding stainless steel plate
5.0
450
4.0
300
1.5
3.0
199
2.0
150
95
0.70
1.0
Inlet
0.45
44
0.35
30
Port
0
0
CSF-UF
CSF-SF
CSF-SP
CSF-SC
CSF-XC
CSF-UF
CSF-SF
CSF-SP
CSF-SC
CSF-XC
Filter Grades
Filter Grades
Head plate
Inlet Plates
Head plate
Filter Sheets
Filter Sheets
26 2022 - 2023 Gusmer Enterprises, Inc. Brewing Products Catalog
West Coast: 559.485.2692 / East Coast: 908.301.1811 www.gusmerbeer.com 27
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