A conventional filter press is a type of filter press that uses a series of filter plates and frames to separate solids from liquids in a slurry. It's one of the most widely used and traditional methods for solid-liquid separation in various industries. Here's an overview of how a conventional filter press works and its key features:

Filter Plates and Frames: A conventional filter press consists of a series of filter plates and frames arranged alternately. These plates and frames are typically made of materials such as polypropylene, stainless steel, or cast iron.

Filter Cloth: Each filter plate is covered with a filter cloth, which allows the liquid to pass through while retaining the solid particles to form a filter cake. The filter cloth may be made of synthetic fibers such as polypropylene or polyester, and it's selected based on factors such as particle size, permeability, and chemical compatibility.

Filtration Process: The slurry to be filtered is pumped into the filter press chambers formed between the filter plates. Pressure is applied to force the liquid through the filter cloth, while the solid particles are retained on the surface to form a filter cake.

Cake Formation: As the filtration process progresses, the solid particles accumulate on the filter cloth, gradually forming a layer of filter cake. The thickness and density of the filter cake depend on factors such as the characteristics of the slurry and the operating conditions of the filter press.

Dewatering: Once the filtration is complete, additional pressure may be applied to the filter plates to further compress the filter cake and remove excess liquid. This helps in dewatering the filter cake and reducing its moisture content.

Cake Discharge: After dewatering, the filter cake is discharged from the filter press chambers. Depending on the design of the filter press, the cake may be manually or mechanically removed from the filter plates.

Cleaning and Maintenance: Proper cleaning and maintenance are essential to ensure the efficient operation of a conventional filter press. Regular inspection, cleaning of the filter plates and frames, and replacement of worn-out filter cloths are necessary to prevent issues such as clogging and leakage.

Conventional filter presses are versatile and suitable for a wide range of applications, including wastewater treatment, mining, chemical processing, and food production. They offer a cost-effective solution for solid-liquid separation processes and can be customized to meet specific requirements and operating conditions.