The Plate and Frame Type Filter Press stands as a versatile and extensively utilized filtration system renowned for its effectiveness in separating solids from liquids. Operating on a straightforward yet efficient principle, this filtration apparatus comprises a series of rectangular plates and frames stacked together. Each frame accommodates a filter cloth or filter paper, establishing a chamber between the plates.
This filtration device finds widespread application and efficiency across various industries including chemical, pharmaceutical, food processing, and wastewater treatment. Consisting of a succession of vertical plates and frames arranged in alternating fashion, the filter press features plates with filter media, typically composed of cloth or other porous materials, affixed to them. The frames serve to secure the plates and offer structural support.
Working Principle
The hydraulic pressure system of the filter press comprises essential components such as a hydraulic station, an oil cylinder, a piston, a piston rod, and a Half-land card hydraulic station. This setup is connected to both the piston rod and the pressure plate. The structure includes a motor, an oil pump, an overflow valve for pressure adjustment, a directional valve, a pressure gauge, an oil circuit, and an oil tank.
Filtration methods can be categorized into two types: open flow filtration and undercurrent filtration. In open flow filtration, each filter plate features a water nozzle installed at the outlet hole, allowing the filtrate to flow out directly from these nozzles. Conversely, undercurrent filtration involves arranging liquid outlet channel holes under each filter plate. These holes are interconnected to form a liquid outlet channel, with the discharge flowing through the pipe connected to the liquid outlet hole under the thrust plate.