Polypropylene Recessed Filter Plates Recessed Chamber Membrane Filter Press Plate Welding Machin

There are three basic types of filter plates used in conjunction with filter presses. They include recessed chamber, plate and frame and membrane squeeze plates.

Membrane squeeze, or diaphragm squeeze, filter plates offer a number of benefits, from time savings to improving the lifespan of the membrane. M.W. Watermark™ offers membrane squeeze filter press/plate solutions to a range of industries. Discover how membrane (diaphragm) squeeze plates work and what advantages they bring to the table.

Membrane squeeze presses and plates are also considered when the slurry has higher than average solids and/or has variable volume, and when the time saved by the squeezing process can be justified by higher equipment costs. (Time is money).

The filtration process of a membrane squeeze filter press typically includes six steps. Here’s how membrane squeeze filtration works:

1. First, the follower presses the membrane filter plates together via the hydraulic cylinder, effectively sealing their surfaces.
2. Once the press has reached the specified pressure, the pressurization stops and the press maintains the pressure.
3. Next, the feeding process begins. During this process, the slurry is pumped into each chamber via the thrust plate’s feeding port. Under the specified pressure, the slurry begins to form a filter cake on the filter cloth while any liquids are forced out of the chamber.
4. After the feeding process has concluded, the filter cake may be washed if required by the application. (The option for cake wash must be included in the manifold configuration). In some instances, air blowing may be used to further dry out the filter cake.
5. Then, the membrane squeezing begins. Using high-pressure water or air, the filter plate membranes squeeze the filter cake in order to reduce its liquid content.
6. Now that the filter cake is mostly free of moisture, the squeeze manifold pressure drops and the membrane on each plate returns to its starting position. The press is opened and the filter cake is discharged.