l. Commissioning normal filter press before feeding work, the whole machine should be checked before each shift. Mechanical pressure transmission parts and gear box must be filled with lubricating oil; hydraulic pressure review oil tank storage and hydraulic station working pressure, hydraulic oil is generally replaced once a year, replace the hydraulic system to do a full-time cleaning, hydraulic station working pressure Less than the maximum operating pressure of the cylinder, but the minimum can not be less than the allowable value of the filtration pressure, too small will cause greater leakage, damage to the engine over the General Assembly.
2. It is forbidden to turn on the factory if the filter plate is less than the specified number so as to avoid damage to the parts. Check the arrangement of the filter plate before feeding, the filter cloth can’t have the phenomenon of folding to prevent the occurrence of large leakage; after the cake is unloaded, the filter plate must be arranged tightly and tightly.
3. Wait until everything is normal before pressing the filter plate under pressure. The filtration pressure and filtration temperature must be within the specified range. If the filtration pressure is too high, leakage will be caused. If the filtration temperature is too high, the plastic filter plate will be easily deformed and the suspension will be added during feeding. To uniform concentration. There must be no contaminants; the filter cloth and filter plate must be rinsed clean after unloading the cake, and residue is not allowed to stick on the sealing surface or feed channel, otherwise it will affect the smooth flow of the feed and the sealing of the filter plate, resulting in both sides of the filter plate. Unbalanced pressure leads to deformation of the filter plate.
4. The choice of filter cloth must meet the filtering technical requirements of the filter paddle. The new filter cloth should be shrunk before production. The opening diameter should be smaller than the filter plate hole diameter. When the filter plate is matched, the cloth hole and the plate hole should be relatively concentric. Cloth should be tightly attached to the wall, otherwise it will cause unclear filtration, low filtration rate, and rupture of the cylinder, which will not achieve the desired filtering effect.
5. In the initial stage of filter press, the filter press is more turbid, and the filtrate will become clear when a layer of filter cake is formed on the filter cloth. If the filtrate has been turbid or has been mixed, the filter cloth may be damaged or the hole of the cloth may be deviated from the plate hole. At this time, close the valve or stop feeding and replace the filter cloth. A small amount of leakage caused by the capillary action of the filter cloth is allowed between the filter plates.
6. When moving the filter plate, the force should be even and appropriate, and it must not be bumped or beaten to avoid damage to the sealing surface and the filter wrench. After a certain period of time, the filter cloth will become hard and its performance will be degraded. Therefore, periodic inspections are required. If changes are found to affect the filtration rate, neutralization washing may be performed with a correspondingly low concentration of weak acid and weak base to restore the function of the filter cloth. If you cannot recover, replace it in time.
7. Slurry, lotion or compressed air valve must be enabled according to the operating procedure. It cannot be enabled at the same time. The pressure of the compressed air cannot exceed the filtration pressure when the diaphragm is squeezed.
