The pressure of the diaphragm filter press is lacking. The filter plate and filter cloth are under strong pressure to complete the closed filter chamber construction. When the pressure is lacking, the pressure applied to the filter plate is less than the pressure of the filtrate. Of course, the filtrate naturally soaks through the gap.
When the edge of a diaphragm filter press is damaged, even a slight bulge on one side, even if one side is often worn, will come into contact with other filter plates. The resulting filter chamber will penetrate regardless of the pressure. In this condition, we Judging from the leak point, the penetration of the filter plate is usually large enough that it can be sprayed.
The filter cloth of the diaphragm filter press is not properly placed. There are many reasons why the filter chamber cannot be sealed. We need to start from a simple filter chamber for 4 weeks to see whether the filter cloth has wrinkles or whether the edge of the filter cloth is defective. The structure is located between the filter plate and the filter cloth and receives a lot of pressure, so the filter plate is usually not prone to problems, and the other parts are the filter cloth. A seal is formed between the rigid filter plates to play a key role in the filter cloth. Natural filter Wrinkles or imperfections in the cloth can cause gaps between the filter plates, and the natural filter chamber will not create a seal.
After the diaphragm filter press is normal, the filter plate can be pressed and filtered. The pressure and filtration temperature during filtration are within the specified range. If it is too high, it will lead to leakage. If the temperature is too high, the plastic filter plate is easily deformed. If Feeding, the concentration of the suspension should be average.
Do not mix the chips; after removing the filter cake, rinse the filter cloth and filter plate clean, leaving no residue on the sealing surface or feed channel, otherwise it will affect the platen press and affect the filter plate sealing. This will cause the filter plate to be damaged by the filter plate The pressure on the 2 sides is unbalanced and deformed.
The selection of the filter cloth is in line with the technical requirements of the filtrate. The new filter cloth should be shrunk before installation. The diameter of the opening should be smaller than the diameter of the filter. When the plate and the filter plate of the frame filter plate are matched, the holes and holes should be relatively concentric. .The feeding hole cloth should be tightly attached to the pipe wall, otherwise the filter will be unclear, the filtration rate will be low, the pipe will be broken, and the expected filtering effect cannot be achieved.
After the diaphragm filter press is properly adjusted, the feeding operation can be performed. The mechanical compression of the transmission parts and the reduction box should add enough lubricating oil; check the hydraulic pressure, check the oil storage capacity of the oil tank and the working pressure of the hydraulic station, generally pay attention to the hydraulic pressure Oil. It needs to be changed once. If the intermediate hydraulic oil is found to be less, it should be replenished in time. When using the diaphragm filter press to change the hydraulic oil, please pay attention to the overall cleanliness of the hydraulic system. The working pressure of the hydraulic station is lower than the high working pressure of the cylinder, but not Should be low. The filter pressure level is too small will lead to a large number of leakage, thereby damaging the machine.
In the operation of the membrane filter press, multiple pure filter plates are placed on 2 beams, and the filter cloth is connected to the filter plate to increase the filter area and slowly accumulate the filtrate to form a filter cake.
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