Product Description

Bag-type Dust Collectors

The working principle of bag filters

The bag filter has a high dust removal efficiency, which is closely related to its dust removal mechanism. When the dusty gas passes through the air inlet pipe at the bottom of the dust collector and enters the ash hopper, due to the impact of the guide plate and the reduction of gas velocity, coarse particles of dust will fall into the ash hopper, and the remaining fine particles of dust will enter the filter bag chamber with the gas. Due to the inertial diffusion of the filter material fibers and fabrics, the hook and static electricity and other factors, The dust is stored in the filter core bag, and the purified gas escapes from the bag and is discharged through the exhaust pipe. The dust accumulated on the filter bag is removed by the gas backwashing method, and the dust is removed to the ash hopper through the double-layer ash discharge valve, and then discharged to the ash conveying device through the double-layer ash discharge valve. The accumulated dust on the filter bag can also be removed by the method of jet pulse gas flow to achieve the purpose of ash removal. The dust in the filter bag can be removed by the ash removal device. The efficiency of the bag filter is also inseparable from the filter material. The performance and quality of the filter material directly affect the performance and service life of the bag filter. The filter material is the main material for manufacturing filter bags. Its performance and quality are the key to promoting the progress of bag filter technology and affect its application range and service life.

The process features of the bag filter system are low resistance and large flow rate

Based on the low-resistance and high-flow system process, the pipeline network design is optimized to reduce system resistance loss. The flow velocity control method is adopted, and the economic flow velocity of the system pipeline is determined to be 16-19m/s. Measures:

(1) Rationally arrange the pipe network structure to minimize local resistance caused by elbows and sudden changes in pipelines as much as possible

(2) Select the appropriate cross-sectional shape of the pipe

(3) Low-resistance dust collectors and structures are adopted, and the resistance control is balanced

(4) Valves with low-resistance structures

(5) Reasonably arrange the relative positions of the pipelines, the inlet and outlet of the dust collector at the exhaust port of the collection hood, and the fan to reduce the system resistance

(6) Select the appropriate fan and motor

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