The leaf filter is mainly composed of the filter main body and the mixing cylinder, the conveying pump, the pipeline, the valve, the electric control and other auxiliary equipment to form a complete filtration system. The filtration process depends on the filtered medium. The main body is composed of a filter tank, a filter screen, a cover mechanism, and an automatic slag discharge device. After the filter aid is mixed with the material in the mixing tank, a filter cake layer is formed on the filter screen through the transfer pump. Once a stable filter cake layer is reached, the fine filter aid particles can provide countless micro channels to help suspend the Sundries, but also allow clear liquid to pass through without clogging, so that the material is actually filtered through the filter cake layer. The filter screen is composed of multi-layer stainless steel wire mesh, which is installed on the central collecting pipe, which is very convenient for assembly, disassembly and cleaning.
Analysis of Causes Affecting Filtration Speed of Leaf Filter
1. Material viscosity
Viscosity is the main reason that affects the rate. After the viscosity of the material exceeds a certain value, it is not suitable for filtering with a leaf-tight filter. The effect of viscosity on speed is mentioned above, so I won't repeat it.
2. Filter area
Increasing the filtration area is an important method to adjust the filtration rate. Usually, when customizing a closed filter, the flow rate per unit filtration area is considered, and the filtration area needs to be designed to meet the filtration requirements, and then the filter cartridge can be designed. Body, has various pipe sizes.
3. Filtration accuracy
We say low viscosity and high filtration speed. What happens if the filtering accuracy is higher? The filtration accuracy is high, and the filtration efficiency per unit area is of course low. And with the increase of time, the efficiency will become lower and lower, and then it is necessary to restart the work process.
4. Working method
The working mode is also one of the reasons that affect the filtration rate. The working mode of the leaf filter needs to be pre-coated, some needs to get filter cake, and some needs to be cleared. The working method (please refer to the automatic candle filter for the specific working method) is different, here is the pre-coating, pre-coating generally requires higher filtration accuracy and lower viscosity materials that need to be pre-coated. The filter cake formed on the filter cloth after pre-coating can effectively intercept impurity particles and play a good filtering role. The thicker the pre-coated in this way, the lower the filtration rate.