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Plate And Frame Filter Press

Plate and frame filter press is the first machine used in chemical dehydration. Although the plate and frame filter press is generally intermittent operation, large investment in infrastructure equipment and low filtration capacity, it is still widely used in some small sewage plants because of its advantages such as large filtration force, high solid content of filter cake, clear filtrate, high solid recovery rate and less consumption of conditioning drugs.
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Working principle of plate and frame filter press

  1. Filter press is composed of frame, filter plate, pressing system (manual, mechanical, hydraulic three forms) and electrical control cabinet.

    plate and frame filter press

2. The frame part plays the role of supporting the pressing device and the filter plate, which is composed of the frame base, the pressing plate, the thrust plate and the main beam.

3. The filter plate is installed on the main beam between the pressing plate and the thrust plate, which is sandwiched with the press cloth.

plate and frame filter press

4. When working, the pressing device (cylinder piston rod or screw) promotes the pressing plate, and the filter plate and filter cloth between the pressing plate and the thrust plate are pressed, and the filter chamber is formed between the pressing plate and the filter plate. The material pressed by the material pump enters the filter chamber from the thrust plate feed hole, and the solid particles are intercepted in the filter chamber, and the filter cake is formed. The liquid is discharged from the body through the outlet hole through the filter cake and cloth. If it is necessary to wash the filter cake, the washing water can be used to wash the filter cake through the washing liquid port on the tail plate. If the cake needs to be blown dry, the filter cake can be blown dry by passing compressed air through the liquid outlet.

5.The structure of the plate and frame filter press frame is the same as that of the van filter press, only the filter part is composed of a plate and a frame and a filter cloth. The plate and frame space is the filter chamber. The liquid flow form of the filter press is divided into open flow and dark flow. Open flow refers to the filtrate directly discharged from the liquid outlet hole of each filter plate; Undercurrent refers to the convergence of filtrate of each filter plate

6. It is discharged from the machine through the outlet channel.

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