Maintenance Matters of Filter Press
l, debugging the normal filter before the feed work, each class before work to the machine for a comprehensive inspection. Hydraulic compression drive parts and gear box must be filled with lubricating oil; hydraulic pressure to check the fuel tank and hydraulic pressure station hydraulic pressure, hydraulic oil is generally replaced once a year, the replacement of the hydraulic system should be done - full cleaning, hydraulic station working pressure Less than the maximum working pressure of the cylinder, but the minimum can not be lower than the filter pressure allowable value, too small will cause a greater leakage, over the General Assembly damage the parts.
2, prohibit the filter plate less than the required number of cases to start work, so as not to damage the parts. Check the filter plate before feeding the situation, filter cloth can not have a folding phenomenon, to prevent the occurrence of greater leakage; unloading cake after the filter plate must be tightly arranged neatly.
3, to be all normal after pressing the filter plate pressure filtration, filtration pressure and filtration temperature must be within the specified range, the filter pressure is too high will cause leakage, filtration temperature is too high plastic filter plate easy to deformation, when the suspension To be uniform. The filter cloth and filter plate must be rinsed clean, do not allow the residue paste in the sealing surface or feed channel, otherwise it will affect the flow of the filter and the filter plate seal, which together due to the filter plate on both sides Pressure imbalance, resulting in deformation of the filter plate damage.
4, the choice of filter cloth must meet the filtration technology requirements of the filter, the new filter cloth should be shaved before the production, opening diameter should be less than the filter plate diameter, matching filter plate hole and plate hole should be relatively concentric, Cloth should be attached to the wall, otherwise it will cause, filter unclear, low filtration rate, cloth tube rupture, fail to achieve the desired purpose of filtering.
5, the filter press in the early filter, the filter is more turbid, when the filter cloth to form a layer of filter cake after the filtrate will become clear. If the filtrate has been turbid or clear mixed, it may be broken cloth or cloth hole and plate hole deviation, this time to close the valve or stop the feed to replace the filter cloth. The filter plate allows a small amount of leakage caused by the capillary phenomenon of the filter cloth.
6, moving the filter plate, the force should be appropriate and appropriate, not collision, beating, so as not to damage the sealing surface and filter wrench. Filter cloth used after a period of time will become hard, performance degradation, for this need to be regularly checked, if found to change the impact of the phenomenon of filtration rate, you can use the corresponding low concentration of weak acid weak alkali for cleaning, filter cloth recovery function, Can not be restored in time to replace.
7, slurry, lotion or compressed air valve, must be operated according to the procedures, can not be enabled at the same time, the diaphragm squeeze when the compressed air pressure can not exceed the filtration pressure.