Plastic filter

NegotiableUpdate on 01/30

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Overview

Plastic filter refers to a filtering equipment made of engineering plastics for the main flow components (such as tank body, filter basket, internal parts, etc.). Common materials include polypropylene (PP), polyvinylidene fluoride (PVDF), etc. The core advantage of such devices lies in the excellent corrosion resistance provided by their materials, which can withstand the erosion of various acids, alkalis, salts, and chemical solvents. Compared to metal filters, it has the characteristics of light weight, less scaling, and high cost-effectiveness. It is widely used in fields such as chemical engineering, electroplating, electronics, and environmental water treatment where corrosive media exist. It is an economical and practical solution for filtering and purifying corrosive liquids

Product Details

Plastic filterIt is a type of filtration equipment specially designed to cope with corrosive working conditions. Its "plastic" attribute does not refer to the filtering principle, but emphasizes its structural and material characteristics - that is, the main pressure bearing tank body, internal support components, and pipeline interfaces are all processed from high-performance engineering plastics through injection molding, welding, and other processes. The fundamental difference in this material level makes it demonstrate irreplaceable value in specific application scenarios.

According to the filtering form, it mainly includes plastic bag filters and plastic filter cartridges. The two have similar structures, usually consisting of a sealed pressure tank made of plastic, a quick opening top cover (for easy replacement of filter elements), and an internal support basket (for placing filter bags) or chuck (for fixing filter elements). The difference is that bag filters use filter bags made of non-woven fabric or other materials as the filtering medium, while filter cartridges use melt blown, wire wound, or foldable filters.

Its working principle is that the corrosive liquid to be processed enters from the tank inlet under the push of the pump or the system's own pressure. When the liquid flows through the filtering medium (filter bag or filter element), the solid impurities contained in it are intercepted, and the purified liquid passes through the medium and is discharged from the outlet. As the filtration progresses, impurities continue to accumulate, and the pressure difference between the inlet and outlet of the system will gradually increase. When the pressure difference reaches the set value, the machine needs to be stopped, the quick opening top cover should be opened, and the saturated filter element should be removed and replaced.

itsThe core advantage directly stems from its material selection. For example, polypropylene (PP) material has good tolerance to most inorganic acids, alkalis, and salt solutions; Polyvinylidene fluoride (PVDF), on the other hand, can tolerate strong oxidizing acids and various organic solvents. This extensive corrosion resistance feature enables this type of equipment to handle highly corrosive liquids that are difficult to handle with metal materials such as stainless steel, extending the service life of the equipment. In addition, the plastic material itself is lightweight, making it easy to transport and install; The surface is smooth and not prone to scaling, and the overall manufacturing cost is usually more advantageous.

Therefore, in the filtration of corrosive materials in chemical processes, purification of electroplating and chemical plating solutions, recycling of etching waste acid in the electronics industry, wastewater treatment in the field of environmental protection, and laboratory research and development,Plastic filterDue to its excellent balance between corrosion resistance, economy, and practicality, it has become a widely used solution.