The working principle of bag filter

Bag filter is consist of holder, ash bucket, the middle cabinet, the upper part cabinet, bag, frame, jet cleaning device and PLC control procedures and other components. The middle cabinet has sub-chamber structure. Dusty gas goes through collecting tube achieving to each ash bucket.

Dust-contained gas will enter into the upper wind path by ash hopper. In the wind screen board action of air flow up, reduce the flow velocity, the part of the big particle inertia force due to the role of dust be separated into ash hopper. Dust-contained gas into the filter bag in the filtration purification, dust is resistance in the outer surface of the filter bag, purified air filter into the case on the opening, the discharge outlet. As the filter bag dust surface increases, and filter import and export with differential pressure rise. When the dust catcher reach to the setting data, a control system out dust instructions, clear grey system began to work. First, electromagnetic valve opened immediately after receive the signal. It makes little patch of the gas chamber of the compressed air emissions. The force change of small diaphragm on both ends, makes be small diaphragm closed exhaust passage open, the compressed air of big diaphragm upper air chamber through which channel educes. Big diaphragm ends stress change, make big diaphragm reaction. It will be closed the output, air bags of compressed air through the output control and spray wind.

Pulse valve is a key components of pulse bag filter. Its service life is the concern problems of the user. Our company can provide the filter bag and pulse valve according to the user's demand.

Bag filter in comparison

It is an important factor of clear dust way that decided to filter bags for dust collector performance. To clear dust for the bag filter classification, basic type mainly has: mechanical rapping way, the back blowing out dust way, counter blowing and vibration play united way, pulse out dust counter blowing out dust way, pulse injection way out dust.

Bag filter technical characteristics

(1) To adopt rapidly opened submerged type pulse valve, and their own small resistance, which can obtain good out dust effect, to 6 m ~ 8 meters long filter bag, injection pressure is only 0.15 ~ 0.3 MPa.

(2) Strong dust ability. It is a very good clear dust equably, good effect, when the out dust filter bag surface of the acceleration is far greater than for other types of bag filter.

(3) Filter high load. The ashes of the deashing have strong security, its resistance also can be not too high when the filter in the high wind at filtering operation, generally for 1200 ~ 1500 Pa. 

(4) The convenient of checking and change the filter bag. The installation and change of the bag filter is convenient, do not need binding. The operating personnel do not need to access to the internal, operating environment is good.

(5) Low cost equipment. Due to the high load filter, dealing with similar smoke gas filter area is less than needed to reverse bag filter, and equipment is compact, cover small area.

(6)The advanced control technology. PLC programmable controller is the host of the control system. It is good for filter out dust, smoke temperature, and import out dust pressure operation parameters for real-time control. The function is stable and reliable.

ZK is a professional dust collector manufacturer in China, and we can provide high-quality bag filter and one-step service. Welcome customers from all over world to visit our factory.