Low Pressure Pulse Jet Bag Filter

This dust collector is mainly composed of a support frame, ash hopper, filter chamber, clean air chamber, filter bags, pulse jet cleaning device and controller. It adopts a modular unit combination design, with series specifications of 1, 2, 3, 4 or more units. Each unit has 24 rows, with 12 filter bags per row, totaling 336 filter bags per unit, providing a filtration area of 800 m². The filter bags are 6 meters in length and 130 mm in diameter, made of polyester needle punched felt material.

Working Principle

Dust-laden gas enters the dust collector and is evenly distributed into the filter chamber through a guide plate. The gas then flows downward along the filter bags and passes through the filter media uniformly. A downward airflow is formed at the bottom of the filter bags, consistent with the direction of dust settling during pulse jet cleaning, which is beneficial for dust sedimentation and improves the cleaning effect.

When the resistance of the dust collector increases, the pulse interval of the jet cleaning system is shortened (fast jet mode). When the resistance is small, the pulse interval is extended (slow jet mode). This control method minimizes the number of jet pulses, reduces energy consumption, prolongs the service life of filter bags, diaphragm valves and solenoid valves, improves operational reliability, and balances the pressure drop, air volume and compressed air consumption. The dust collector is easy to inspect and maintain, with a cover plate at the top of the clean air chamber dedicated to filter bag inspection and replacement.