Operation is prohibited when the pressure of the filter plate of the filter press is lower than the normal value

          The filter plate of the filter press was turbid in the early days of the filter press

First of all, you can debug the filter plate of the ordinary filter press for paper feeding operation, and you should check all the machines before each shift. Sufficient lubricant must be added to the mechanical compression drive and reduction gearbox; hydraulic pressure is used to check the oil storage capacity of the oil tank and the working pressure of the hydraulic station. The hydraulic oil is usually replaced once a year, the hydraulic system should always be kept clean, and the hydraulic station should be in operation. The pressure is less than the working pressure of the cylinder, but not less than the filter pressure. If it is too small, it will cause a large amount of leakage and damage the machine.

Secondly, when the pressure filter plate is less than the normal number, it is prohibited to start operation to avoid damage to the machine. Check the condition of the filter plate before feeding. Do not fold the filter cloth to avoid water leakage.

Third, the slurry, washing liquid or compressed air valve needs to be activated according to the operating procedure and cannot be activated at the same time. The compressed air pressure during the extrusion process should not exceed the filter pressure.
Fourth, the selection of filter cloth needs to meet the technical requirements of the filter plate filter element. In this regard, the filter press works well. Before making a new filter cloth, the water should be shrunk. The diameter of the opening should be smaller than the diameter of the filter plate. When installing the filter plate, the holes between the cloth and the holes should be relatively concentric. The fabric of the paper feed hole should be close to the wall of the filter. Otherwise, the filter will be unclear and will be filtered. The speed is low, the fabric is damaged, etc., and the expected filtering effect cannot be achieved.

5. When moving the filter plate of the filter press, the force should be uniform and appropriate, and should not be impacted, so as not to damage the sealing surface and the filter wrench. After a period of use, the filter cloth will harden and its function will be reduced. Therefore, it is considered that regular inspections are required. If you find that the filtration rate changes, you can use the corresponding concentration of weak acid and weak base for neutralization and washing. If it cannot be recycled, the restoration function of the structure can be changed in time.

Sixth, after it is completely normal, you can press the filter plate and filter it. The filtration pressure and filtration temperature must be within the normal range. If the filter pressure is too high, it will cause leakage. If the filtration temperature is too high, the plastic filter plate is easily deformed. The concentration is uniform and there is no impurities.

7. In the early stage of the filter press, the filter plate of the filter press was turbid. When the filter cake forms a filter cake layer, the filtrate will become clear. If the filtrate is turbid or mixed by washing, it may damage the wells in the plate and the wells in the plate. At this time, the valve should be closed or the filter cloth replacement should be stopped.

           Doyen specializes in providing belt press equipment for the Southeast Asian market. Welcome to visit our workshop and formulate a more scientific  plan based on the actual situation of your company. Welcome to visit joyce@doyenchina.com or visit https://www.doyenchina.com.