Common high viscosity liquid materials include oil, paint, lime water, sealing glue, plastic, synthetic fibers, polymers, and so on. These high viscosity liquids differ greatly from low viscosity liquids during the filtration process. Zhuo Nuo Technology first introduces the filtration characteristics of high viscosity liquids, and then based on this, introduces how to choose appropriate filters and filtration equipment for high viscosity liquids.
The viscosity of high viscosity liquids is very high, typically ranging from a few hundred to tens of thousands of centipoises. The main reason that affects the viscosity of these materials is their molecular weight, and as the molecular weight increases, the viscosity of the materials also increases. Another important factor affecting viscosity is temperature. As the temperature increases, the viscosity of the fluid decreases.
The impurities in most high viscosity liquids are mainly in a colloidal or semi colloidal suspended state, as well as heterogeneous solid granular impurities. The particle size distribution of impurities is mostly in the range of 0-100um. This impurity can easily block the pore size of the
Filter medium. It is easy to form a filter cake layer on the surface of the filter medium in a short period of time, and a few impurities will pass through the surface of the filter material and block the inner holes of the
Filter Element* As a result, the filtration area of the filter material sharply decreased, and the flow rate decreased in a short period of time, and the pressure difference also quickly increased.
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Selection of filter media
The filtering medium determines the flow rate of the liquid and the ability to intercept impurities. Zhuo Nuo Technology continuously seeks more suitable filter materials and filters based on the research on the characteristics of high viscosity liquids mentioned above. It is necessary to consider factors such as the Dussel velocity of the filter material, surface viscosity of the filter material, corrosiveness, cleaning ability, high temperature resistance, etc.....
Based on continuous research and repeated experimental verification, many filtering media use stainless steel filters * suitable for filtering high viscosity materials.
Main advantages:
The surface roughness is low, and the shear rate of the liquid during filtration is low,
The thin thickness of the filter material belongs to surface filtration and is not easily clogged,
High strength, even at high pressure differences, the filter aperture does not deform, the interception ability does not decrease, and the filtration accuracy is not affected,
Low labor and material costs: Consumables can be used in conjunction with fully automatic self-cleaning filters, with no consumables or labor costs
High temperature resistance: Stainless steel has strong temperature adaptability and can be used in environments of three to five hundred ℃ for a long time
