Bag Filter
- Video
The PBF bag filter is designed for solid–liquid separation in processes where impurities need to be removed before further handling or packaging. It uses filter media such as filter bags, cartridges, cloth, or other porous materials to capture solid particles from the fluid. Depending on the application, the system can be configured as a filtration cart, bag filter unit, pressurized leaf filter, or closed plate filter. It can also be integrated with conveying pumps and mounted on a mobile frame for flexible operation. During filtration, particles, agglomerates, or filter aids such as diatomaceous earth and clay are retained by the filter medium, allowing a clearer and more uniform filtrate to pass through. This filtering equipment is widely used for product refinement and impurity removal in industries such as coatings, inks, adhesives, food processing, pharmaceuticals, and petrochemicals.
| Model | Dim (m2) | Pressure (Mpa) | Temperature (℃) | Viscosity (Pa.s) | Air Pump |
| 0.25 | 0.6 | ＜120 | ≤10 | DN25 | |
| 0.5 | 0.6 | ＜120 | ≤10 | DN50 |
- Filter chamber
- Filter screen
- Pressure meter
- Pump
Suitable for wet processing of liquid–liquid and solid–liquid systems, particularly for filtering materials with moderate solid content.
- Paints and Coatings
- Inks
- Leather Coatings
- Adhesive
- Viscous Materials
- Cosmetics
- Chemicals
- New Materials
- High filtration accuracy
Filtration fineness ranges from 0.1 to 50 μm, allowing effective removal of fine particles and suspended solids to improve product clarity. - Sealed operation
The fully enclosed structure helps prevent solvent evaporation and external contamination, supporting cleaner and safer processing conditions. - Reliable sealing performance
Designed with dedicated sealing components to minimize internal and external leakage, ensuring stable filtration during operation. - Quick filter replacement
The system uses a quick-open or quick-change design, allowing fast replacement of filter bags or cartridges while reducing downtime and leakage risk. - Corrosion-resistant construction
Wetted parts can be made from SS304, SS316L stainless steel, or polypropylene, making the system suitable for handling acids, alkalis, and organic solvents.
- Multiple filtration methods
Supports both surface filtration (such as filter bags and filter cloth, forming a filter cake layer) and depth filtration (such as filter cartridges for fine particle interception), allowing selection based on material characteristics and filtration requirements. - Flexible mobility and operation
Can be configured as a mobile filtration unit with universal casters and pneumatic diaphragm pumps, making it easy to move between workstations. The system also includes self-protection features for stable operation. - Reduced operating cost
Certain configurations, such as plate-type sealed filters, can operate without filter paper or cloth, requiring only a small amount of filter aid, which helps lower overall filtration cost. - Optional automation features
Automation options such as vibration-assisted residue removal, automatic discharge, pressure differential monitoring, and filter cake thickness detection can be integrated to support continuous and controlled operation. - Flexible customization capability
Filtration area (1–100 m²), insulation jackets, explosion-proof configurations, and multi-stage filtration systems can be customized to match different process requirements.