Classification by Core Material
Polymer-based filtration elements: These include PP melt-blown cartridges, PE sintered cartridges, and liquid filter bags. Typically made from materials like polypropylene or polyester, they offer filtration ratings ranging from 0.5 to 300 μm. Cost-effective and resistant to acids and alkalis, they are widely used in industries such as water treatment, coatings, and electroplating.
Metal-based filtration elements: These include sintered metal powder cartridges, stainless steel filter discs, and stainless steel woven mesh cartridges. Made from materials like stainless steel and titanium alloys, they withstand high temperatures (up to 700°C) and support backwashing for regeneration, making them suitable for demanding sectors like petrochemicals and aerospace.
Inorganic non-metallic filtration elements: Represented primarily by ceramic membrane elements, these offer excellent resistance to acids and alkalis and high mechanical strength. They are used for gas purification and the filtration of acidic solutions, finding broad application in the new energy and semiconductor industries.
Classification by Structural Form
Tubular filter cartridges:These include pleated cartridges, string-wound cartridges, and high-flow/high-capacity cartridges. Notably, high-flow cartridges designed for power plants offer 5 to 10 times the flow rate of standard models, possess higher dirt-holding capacity, and extend replacement intervals by 3 to 6 times.
Bag-type filtration elements:These are liquid filter bags featuring a 3D filtration structure made of needle-punched felt. Available in standard sizes (No. 1 through No. 5) as well as custom specifications, they provide a secure seal that minimizes the risk of side leakage and material contamination.
Sheet-type filtration elements: These are stainless steel filter discs ranging from 2.0 to 500 mm in diameter. They can be customized with multi-layer composite structures and are commonly used for gas-liquid separation in processes such as distillation and absorption.
