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How does the filter press work?

When the pressure is greater than the frictional resistance of the pressing plate, the pressing plate slowly presses the filter. When the pressure is greater than the frictional resistance of the pressing plate, the pressing plate slowly presses the filter. Plate, when the pressure to reach the pressure set by the relief valve (shown by the pressure gauge pointer), the filter plate, filter box (plate and frame) or filter plate (box) is pressed, the relief valve began to unload At this time, cut off the motor power, pressing the action is completed, when returned, the valve for the change, the pressure oil into the cylinder of the rod cavity, when the oil pressure to overcome the friction plate compression, the pressure plate began to return The
   When the hydraulic pressure of the filter press is automatically pressed, the pressing force is controlled by the electrical contact pressure gauge. The upper and lower limit of the pressure gauge are set at the value of the process. When the pressing force reaches the pressure gauge When the upper limit, the power cut off, the oil pump to stop power supply, due to the oil system may produce leakage and leakage caused by the pressure drop, when the lower limit to the pressure gauge pointer, the power is connected, the pump began to supply oil, the pressure reached the upper limit , The power cut off, the oil pump to stop the oil, so the cycle to achieve the process of filtering materials to ensure the effect of compression force.
   Filtration method: the way the filtrate flows out of the flow filter and undercurrent filtration. Bright flow filter, each filter plate below the liquid hole with water Tsui, the filtrate intuitively from the water Tsui out. Underwater filter, the bottom of each filter with a liquid channel hole, a number of filter plate out of the liquid hole into a liquid out of the channel, by the thrust plate below the outlet hole connected to the pipeline discharge.
    Washing: filter cake needs to be washed, sometimes flow one-way washing and two-way washing, dark flow one-way washing and two-way washing. Bright flow one-way washing is, the lotion from the thrust plate of the lotion into the hole in turn, through the filter cloth and then through the filter cake, from the non-porous filter plate outflow, then the hole out of the water nozzle in the closed state, The outlet of the non-perforated nozzle is open. Bright flow two-way washing is, the lotion from the top of the push plate on both sides of the lotion into the hole has twice washed, that is, wash the first side of the washing and then from the other side of the wash, the export of the lotion with the import diagonal Direction, so called two-way cross-washing. Undercurrent unidirectional flow is, the lotion from the thrust plate of the lotion into the hole into the hole plate, through the filter cloth and then through the filter cake, from the non-porous filter plate out. Undercurrent two-way washing is the lotion from the top of the board on both sides of the two lotions into the hole has two washing, that is, washing from the side of the washing, and then from the other side of the washing, the export of dipped diagonal direction, So also called undercurrent two-way cross-washing.

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