cleaning the sand filter press
cleaning the sand filter press, we can use the manual method under normal circumstances. Gently remove the filter cloth from the frame and then soak in water. If it is soaked in warm water, the effect is better. After soaking for one hour, it can be rubbed repeatedly by hand, and the detergent is also good. You can also use a brush, which is a general household shoe brush, and gently brush the impurities on the filter cloth. After brushing clean, replace with water to rinse. Of course, the above is for ordinary filter cloth.
If the material filtered by the filter cloth is acidic or alkaline chemical, it is not suitable to do so. At this time, we use a neutral method to soak the filter cloth. If the filter cloth is acidic, then we can use a slightly alkaline solution to soak the filter cloth. If the filter cloth is alkaline, we can use a slightly acidic solution to soak the filter cloth. There are many types of filter cloths. We can choose the appropriate cleaning method according to the characteristics of the filter cloth.
The hydraulic oil is like the blood of the sand filter press. It acts as a lubricating part to make the sand filter press produce pressure. Over time, the hydraulic oil will emulsifie, and the hydraulic oil will work in a high-pressure closed environment, which will wash the surface of the sand filter press, and impurities will be mixed into the hydraulic oil, which will accelerate the oxidation and deterioration of the hydraulic oil. In this way, the hydraulic oil does not function to protect the sand washing filter. Therefore, pay attention to the hydraulic oil when cleaning the sand filter press, and replace it when appropriate.
Before washing the sand filter press, we need to understand the properties of the filter cloth filter, so as to choose the corresponding cleaning method. When the filtrate is acidic, we should choose a weak base of water to soak the filter cloth, usually soak for 10~24 hours, then gently rub the filter cloth several times, then rinse with water, then dry to 90% dry It can be used again. Also for acidic or neutral filtrates, we only need to change the infusing solution to weakly acidic. It is worth mentioning that when the filtrate has blocking properties, we need to add some corresponding diluent in the infusion solution to achieve better washing effect.