Plate and frame filter press in the sludge dewatering field is widely used, plate and frame automatic filter press below we say detailed operation process, ready, sludge dewatering steps and processes what?
1. Open before inspection.
check whether the filter plate is correct and whether the filter cloth is clean and wrinkled. If the filter cloth is not clean, it will affect the penetration of the filter cloth, prolong the mud time, and the moisture content will be higher than the normal value. If the filter cloth is not arranged regularly or wrinkled, the pressure will increase after the slurry is fed, and the slurry will be ejected from the gap.
2. Press mud to open.
1) Filter plate pressed.
The pressure was maintained at 25kfg/cm2, and the filter press was opened to press the filter plate.
2. open mud pressing.
turn on the sludge pump P421A/P421B to enter the mud into the plate and frame filter press. After the mud enters the filter press, under the action of positive pressure, water penetrates from the gap of the filter cloth, flows into the filtrate pipe, enters the inspection well next to the filter press, and flows into the regulating tank 2. With the increase of entering mud, the filter hole gradually decreases and the filter pressure increases. When the mud pressure reaches 5kfg/cm2, the water content of the sludge is basically about 70%, and the filter cake is formed. For the screw pump entering the mud pump, when the working pressure is increased to 4kfg/cm2, the plate and frame automatic filter press manufacturer opens the pressure relief valve to prevent the screw pump from excessive pressure and serious mechanical wear due to excessive working pressure and less filtrate precipitation.
3. Unloading mud
Stop entering the mud, turn on the air compressor for 1 hour or so, ready to unload the mud.
1) Open and unload the mud plate frame.
First start the filter press, first compress, then loosen the constant pressure compass, then loosen the action, open the board, then use the silt shovel to gently shovel off the sludge, fall below, wait for the sludge shovel to pack.
2. pressing mud reset.
Sludge bagging, open the compression action, press the pressure to 25kfg/cm2, tighten the pressure holding compass, stop the action, and then close it.
4. Clean the filter cloth.
The principle is that every time out of the mud after washing the filter cloth, now set every day.
5. Replace the filter cloth.
If the filter cloth is glued with glue, the plate and frame filter press cannot be cleaned with a high-pressure cleaner, or the filter cloth is damaged and should be replaced immediately.
1) Remove the old filter cloth.
Remove the filter plate, untie the fixed filter cloth rope, remove the filter cloth, and carry out fixed waste treatment.
2) New filter cloth replacement.
pass one of the new filter cloth through the center hole of the filter plate, rotate the filter cloth, reserve one end of the fixed rope hole, and then use the rope to pass through the corresponding holes of the two filter cloths to fix the two filter cloths on the filter plate. 3) Put the filter plate neatly, place the filter plate of the replaced filter cloth on the filter press, arrange and align it neatly, and press mud normally after replacement.
