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What are the technical features of a rubber filter press?

Time：

2022-02-19

In the structure of a rubber belt filter, the filtration section is arranged along a horizontal length, enabling continuous execution of filtration, washing, suction, and filter cloth regeneration. Rubber belt filters offer advantages such as high filtration efficiency, large production capacity, excellent washing performance, low residual moisture, flexible operation, and low maintenance costs. These filters are widely used for solid–liquid separation in industries including metallurgy, mining, chemical processing, papermaking, food, pharmaceuticals, and environmental protection, with particularly strong applications in gypsum dewatering during flue gas desulfurization (FGD).

　　A rubber filter press is a device that utilizes vacuum negative pressure as the driving force to achieve solid–liquid separation.

　　In the structure of a rubber belt filter, the filtration section is arranged along a horizontal length, enabling continuous execution of filtration, washing, suction, and filter cloth regeneration. Rubber belt filters offer advantages such as high filtration efficiency, large production capacity, excellent washing performance, low moisture content in the filtrate, flexible operation, and low maintenance costs. These filters are widely used for solid–liquid separation in industries including metallurgy, mining, chemical processing, papermaking, food, pharmaceuticals, and environmental protection, with particularly strong applications in gypsum dewatering during flue gas desulfurization (FGD).

　　What are the technical features of a rubber filter press?

　　a. It can continuously perform process operations such as graded filtration, filter cloth cleaning, suction, discharge, and filter cloth regeneration.

　　b. The mother liquor from the filter screens and the cleaning solutions for each stage can be collected sequentially, enabling both co-current and counter-current washing.

　　c. The overall structure features a modular design, allowing for flexible assembly and facilitating transportation and installation.

　　d. The control system employs DCS technology to achieve both on-site and remote automatic control.

　　The entire structure of the rubber filter press is fabricated from Q235A steel plates, precision‑machined on all six faces. The fixed pressure plate, movable pressure plate, and cylinder support brackets are all welded from Q235A steel; they undergo tempering and nondestructive testing to eliminate thermal distortion, followed by precision finishing and integration, resulting in high overall strength and excellent dimensional stability. The compression mechanism employs hydraulic actuation, ensuring smooth operation and substantial clamping force, thereby maintaining a filtration pressure of 0.4–0.8 MPa after the filter plates are pressed down and preventing any leakage or spray during filtration and back‑blowing.

　　Composite rubber plates, reinforced polypropylene plate‑type filter presses, with filtration areas ranging from 5 to 1,200 cm², are available in several configurations: manual compression, mechanical compression, hydraulic compression, semi‑automatic, fully automatic, and PLC‑controlled. Operating pressures for filtration, washing, and squeezing range from 0.1 to 1.2 MPa.

　　The electrical control system of the rubber filter press employs both relay‑based circuitry and PLC programming, ensuring reliable performance and safety. PLC programming enables remote control via a computer network.

　　Rubber filter‑press equipment boasts high filtration efficiency, large production capacity, excellent washing performance, low residual moisture, flexible operation, and low maintenance costs. It is widely used for solid–liquid separation in industries such as metallurgy, mining, chemical processing, papermaking, food processing, pharmaceuticals, and environmental protection, with particularly strong applications in gypsum dewatering for flue‑gas desulfurization (FGD).