A rubber membrane plate, often used in filter presses, is a type of filter plate designed with an elastic membrane made of rubber or elastomer material. These membranes are attached to the filter plate and act as a flexible barrier between the filter chamber and the filter cloth.

Here's how a rubber membrane plate works in a filter press:

Installation: The rubber membrane is attached to the filter plate, forming a seal around its edges. The membrane is typically pre-installed or can be retrofitted onto existing filter plates.

Filtration Process: During the filtration process, the slurry is pumped into the filter press chambers, and pressure is applied to force the liquid through the filter cloth while retaining the solid particles. The rubber membrane expands under pressure, allowing the slurry to pass through while maintaining a tight seal to prevent leakage.

Cake Formation: As the solid particles accumulate on the filter cloth, they form a layer of filter cake. The rubber membrane helps to ensure uniform cake formation and prevents leakage around the edges of the filter plate.

Dewatering: After the filtration process, the filter cake is dewatered by applying additional pressure to the filter plates. The elastic nature of the rubber membrane allows it to conform to the shape of the filter cake, ensuring efficient dewatering and maximum removal of liquid.

Cake Discharge: Once dewatered, the filter cake can be discharged from the filter press chambers. The flexible rubber membrane facilitates easy release of the cake, minimizing the risk of cake cracking or damage.

Rubber membrane plates are particularly useful in applications where a high degree of sealing is required to prevent leakage and ensure efficient separation of solids and liquids. They are commonly used in industries such as mining, chemical processing, wastewater treatment, and food production.