Bag Dust Collector

What is Bag Dust Collector?

Bag dust collector is a dry dust filter device that uses a large capacity filter bag and a powerful blower to remove dust and particles in the blasting chamber, so it is also called bag filter dust collector, suitable for capturing fine, dry, non-fibrous dust . The filter bag is made of woven filter cloth or non-woven felt, and uses the filtering effect of fiber fabric to filter the dust-laden gas. When the dust-laden gas enters the bag dust collector, the dust with large particles and heavy specific gravity will be affected by gravity. It settles down and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is blocked, so that the gas can be purified.

Bag dust collector has the advantages of high dust removal efficiency, stable operation, small footprint, and wide application range. It is widely used in mining, metallurgy, chemical industry, building materials and other industrial fields. Under different working conditions, bag dust collectors can select different filter bag materials and structures according to gas properties and dust characteristics to ensure the best dust removal effect.

Types of Bag Dust Collector

1. According to the shape of the filter bag, it is divided into: flat bag (trapezoid and flat) and round bag (cylindrical).

2. According to the way of air inlet and outlet, it is divided into: lower air inlet and upper air outlet, upper air inlet and lower air outlet and direct current type (limited to plate flat bags).

3. According to the filter method of the bag, it is divided into: external filter type and internal filter type.

Fibers for filter media include cotton fiber, wool fiber, synthetic fiber and glass fiber, etc. The filter media woven from different fibers have different properties. The commonly used filter materials are 208 or 901 polyester flannel, the operating temperature is generally not more than 120 ° C, the glass fiber filter bag treated with silicon resin is generally not more than 250 ° C, and the cotton wool fabric is generally suitable for non-corrosive; Dusty gas below 80-90℃.

How Does Bag Dust Collector Work?

When the dust-laden gas enters the ash hopper from the air inlet pipe at the lower part of the precipitator and enters the ash hopper through the deflector, due to the collision of the deflector and the reduction of the gas velocity, the coarse dust will fall into the ash hopper, and the rest of the fine particle dust will follow the gas. Entering the filter bag room, due to the inertia, diffusion, blocking, hooking, static electricity and other effects of the filter material fibers and fabrics, the dust is retained in the filter bag, and the purified gas escapes the bag and is discharged through the exhaust pipe.