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Types of Filter Bags and Their Classifications

Bag Filter Filter Bag

Filter bags, as consumables for filtration, are widely used in industrial production, with high demand and promising market prospects. Different industries require different types of filter bags. Here are various classifications:
  1. Shape:

    • Flat Bags: These have a flat shape.
    • Round Bags: These have a cylindrical shape.
  2. Filtering Method:

    • External Filtration: Filtration occurs on the outside of the bag.
    • Internal Filtration: Filtration occurs on the inside of the bag.
  3. Material: Liquid filter bags are generally made of common materials such as:

    • Nylon
    • Stainless Steel
    • Non-woven Fabric
    • Oil-absorbing Cotton
  4. Filtering Product Types:

    • Particle Filter Bags
    • Colloid Filter Bags
    • Oil Filter Bags
  5. General Specifications:

    • Size 1 Bag (180450mm)*
    • Size 2 Bag (180810mm)*
    • Size 3 Bag (110280mm)*
    • Size 4 Bag (110380mm)*
    • Size 5 Bag (150550mm)*

With the rapid development of modern industry and the thriving vitality of environmental protection, environmental filter bags have seen new developments. Environmental filter bags can be classified in the following ways:

  1. Temperature Resistance:

    • High-temperature Type
    • Medium-temperature Type
    • Room-temperature Type

    Applications: Iron and steel plants, ferroalloy plants, refractory plants, foundries, power plants, cement plants, chemical plants, grain processing plants, carbon black plants, aluminum plants, etc.

  2. Airflow Direction:

    • Bottom Inlet Top Outlet
    • Top Inlet Bottom Outlet
    • Direct Flow (for flat bags only)
  3. Cross-sectional Shape:

    • Flat Bags (trapezoidal and flat)
    • Round Bags (cylindrical)
  4. Filtering Method:

    • External Filtration
    • Internal Filtration
  5. Dust Removal Method:

    • Mechanical Vibration
    • Nozzle Reverse Blow
    • Compartmental Reverse Blow
    • Vibration and Reverse Blow Combined
    • Pulse Jet Cleaning

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