The filter cloth of the plate and frame filter press is one of the more important components of the filter press. Different models are matched with different filter cloths. Then, what should be paid attention to when selecting the filter cloth of the plate and frame filter press?
First, clarify the material that needs to be filtered, and determine the material of the filter cloth according to the material.
Second, clarify the filtration accuracy during production and choose a filter cloth with suitable permeability. Although the filter cloth plays a very important role in the initial filtration accuracy of the filter press, the higher the initial filtration accuracy is not the better, but it is only necessary to consider that the filtration accuracy can meet the minimum requirements. Because the plate and frame filter press forms a filter layer after filtering for a period of time, the retention effect of the filter cloth becomes smaller, and the "filter layer" that really plays the role of fine filtration is the filter layer formed by the plate and frame filter press. The key to cloth use technology.
Third, the peeling performance of the filter cake. The surface of the filter cloth is smooth and flat, the filter cake peels off quickly, and the operation time for thorough filtration is short, and the efficiency is high. Once the filter cake adheres to the filter cloth and is not easy to peel off, it will extend the operating time of the filter press and reduce the work efficiency. If you want to replace the filter cloth, it will take longer. Choosing satin weave has better cake unloading performance than plain weave filter cloth, and choosing monofilament filter cloth has better cake unloading performance than long multifilament and short fiber filter cloth.
Fourth, the regeneration performance of the filter cloth. When choosing a filter cloth, pay attention to choosing a filter cloth with good regeneration performance. The filter cloth with good regeneration performance can be washed directly on the filter press to reduce the number of cloth changes.
Fifth, the filtration experiment of materials. The filter press requires continuous experimentation when it is in use. Carry out a sample experiment on material filtration. Investigate the retention effect of the filter cloth, filter rate, cake unloading performance, filter cake moisture content, regeneration performance, etc.
What should be paid attention to when selecting the filter cloth of the plate and frame filter press?
2021 12/15