Working Principle of Medium Efficiency Bag Filter

The working principle of the medium-effect bag filter is based on mechanical filtration, whereby particles are retained in the bag as the air passes through the filter, while the cleaner air continues to flow. The bag structure ensures that the filter has a larger filtration area, which improves the overall filtration efficiency. At the same time, the bag design also helps to reduce the wind resistance of the filter and maintains smooth air flow.

Features of the medium-effect bag filter

• High filtration efficiency: for particles of different sizes, the filtration efficiency is between 40% and 80%, which can effectively purify the dust and microorganisms in the air.

• Large dust capacity: the filter material made of chemical fiber has good dust capacity and can hold more dust particles without affecting the filtration efficiency.

• Low resistance: the bag structure design reduces wind resistance and ensures high efficiency of air circulation.

• Long service life: the medium-effect bag filter usually has a long service life, which reduces the replacement frequency and lowers the maintenance cost.

• Convenient installation: the modularized design makes the installation and replacement of filter bags easy and fast.

• Wide range of application: it is suitable for many different application environments and occasions, such as air conditioning systems and ventilation equipment.

Application Fields

• Pharmaceutical industry: used to purify the air of raw materials and finished products to ensure the cleanliness of the pharmaceutical production environment.

• Automobile manufacturing industry: Used to filter airborne dust and prevent defects during painting and coating processes.

• Food manufacturing industry: to maintain the hygiene of the production environment and prevent microorganisms and foreign objects from contaminating food.

• Commercial Buildings: Used in central air conditioning systems in office buildings, shopping malls, etc. to provide clean air to users.

• Industrial Ventilation System: Used in various industrial production processes to control the dust content in the air, protect equipment and improve product quality.

• Cleanroom System: Used as intermediate filtration in centralized ventilation and air conditioning systems to ensure that the cleanliness of air in cleanrooms meets specific standards.

Installation and Maintenance Points

• When installing, ensure that the filter is well sealed against the system to prevent leakage of unfiltered air.

• Regularly check the surface of the filter for obvious clogging or breakage, and clean or replace as necessary.

• Replace the filter periodically, depending on the usage environment, to maintain optimal filtration.

• When cleaning or replacing the filter, follow the instructions provided by the manufacturer to avoid damage to the filter structure.

• Design Features

  The main feature of the medium efficiency chemical fiber bag filter is its unique bag structure and heat fusion technology, which ensure that the filter can evenly fill the airflow and prevent leakage, thus reducing the resistance and maximizing the dust holding capacity. In addition, the “bag support grille” serves to prevent the filter from shrinking or bending under extreme operating conditions.

• Performance Parameters

  The performance parameters of medium efficiency chemical fiber bag filters include the filtration efficiency class (F5, F6, F7, F8, F9 in accordance with EN779), as well as the filtration efficiency for different sizes of dust particles. Specific parameters also include filtration area, air volume, dust capacity, initial and final resistance.

• Material composition and operating conditions

  The material composition of the medium-effect chemical fiber bag filter mainly includes the outer frame (such as aluminum profile, aluminum folded frame, galvanized frame, stainless steel frame), filter material (synthetic fiber or non-woven fabric), filter bag type (ultrasonic bag), and support frame material (galvanized iron wire). The operating conditions involve an operating temperature of typically 80°C and an operating humidity of up to 99%.