The most commonly utilized filter element is the fixed volume recessed chamber filter plate. The recessed chamber filter plate originated from the plate and frame filter plate when polypropylene became the material of choice due to relative low initial cost, excellent chemical and corrosion resistance, and light weight handling.
Recessed Chamber Filter Plates
Recessed chamber filter plates are manufactured with a fixed volume recess depth and area formed on both sides of the filter plate.
The application and plate thickness will dictate the necessary quantity and size of stay-bosses required.
The outside sealing surface of the recess chamber plate and stay-bosses are machined parallel to seal when the plates are pressurized and to minimize the wear on the filter cloths.
The recessed area of the chamber plate is usually molded with conical pips. The surface of the pips provides support for the filter cloths and the gaps between the pips provide a drain path for the filtrate to exit to the filtrate discharge port.
The recessed chamber plate can be supplied with customer requested feed eye arrangement.
The recess chamber filter plate can also be supplied with a sealing gasket on one side of the plate and a caulking groove for the filter cloth to minimize wicking and leaking of filtrate from the plates.
Klinkau America, Inc. manufactures a complete line of compression molded virgin polypropylene recessed chamber plates in sizes 250mm X 250mm to 2000mm X 2000mm.
Special recessed chamber plate designs include high volume capacities, feed eye grommets; center support feed rings, polyvinylidene fluoride for high temperature applications, co-polymer resins for cold temperature applications, caulked and gasketed design, etc.
Advantages of Recessed Chamber Filter Plates vs. Plate and Frame Filter Plates
- Maximum feed pressures to 300psig-20 bar lead to higher cake solids
- Easier cake discharge leads to faster cycle times
- Increased feed eye size allows faster filtration rates
- Increased feed eye size allows higher solids filling
- Gasket ( cgr ) design plates eliminate filter plate/filter cloth wicking
Plate and Frame Filter Plates
Klinkau America, Inc. manufactures a complete line of plate and frame type filter plates from size 250 mm to 1500 mm (12" to 59"). The early pressure filtration applications utilizing filter presses included the "plate and frame" type filter plate. Although not as commonly used in modern filter presses of today, "plate and frame" type filter plates are still the filter plate of choice for special applications.
Typical applications include chemical (dye and pigment), mining (yellow cake and metals refining), industrial, and blood plasma filtration.
Advantages of Plate and Frame Filter Plates
- Excellent cake washing capability
- Excellent cake air blow down capability
- Various cake thicknesses 10mm to 60mm
- Filter cloth can be easily changed
- Use of simple overhanging cloth
Filter Plate Accessories
Klinkau America, Inc. can provide a complete supply of handles (machined or injection molded), spigots (standard, two-way, three-way), and liner pipe connection systems (polypropylene and stainless steel).
Cloth pins-dogs, gasket material, grommets, and cake scrapers can also be provided upon request.
- Spigots
- Liner Pipes and Grommets
- Handles
