The bag filter is an efficient industrial dust removal equipment. Its main function is to capture the fine dust particles in the gas through the filter material (filter cloth), thereby purifying the exhaust gas and protecting the environment. This equipment is widely used in various industrial production processes, such as metallurgy, chemical industry, building materials, tobacco and other industries.

Working principle:

1. Dust gas entry: dust gas through the role of the fan into the bag filter dust hopper part, where coarse particles of dust will fall into the ash hopper because of collision and speed reduction.

2. Filtering process: fine dust particles enter the bag chamber with the gas, and are left in the filter bag due to the inertia, diffusion, barrier, electrostatic and other effects of the filter material.

3. Purified gas exhaust: The filtered clean gas escapes from the bag and is discharged through the exhaust pipe.

4. Ash cleaning system: the ash accumulated on the cloth bag can be removed by gas backwashing method or spraying pulse air flow method, and the dust removed is discharged by the ash discharge device.

Selection principle:

1. Standard discharge: the selected dust collector must meet the national and local emission standards to ensure that the emission concentration is within the prescribed limit.

No secondary pollution: no new pollutants should be produced in the dust removal process, and the collected dust should be properly treated.

3. Economy: On the premise of meeting environmental protection requirements, consider the one-time investment, operation and maintenance cost and energy efficiency ratio of the equipment.

Influencing factors:

-Gas properties and particle characteristics: including gas properties such as temperature, humidity, viscosity, and particle size, density, and shape.

-Processing flow and pressure drop: Determine the processing gas flow and the required pressure drop range, and select the appropriate size and number of cloth bags.

-Treatment efficiency requirements: Select the filter material and bag type according to the required particulate matter treatment efficiency.

-Application environment and standards: consider the conditions of the working environment, such as temperature changes, chemical corrosion, etc., to ensure that the relevant standards and requirements are met.

Use and maintenance:

-Installation: during installation, ensure the firmness of the fan and motor, and the sealing of the inlet and outlet pipes.

-Use: Turn on the fan to filter the dust-containing air through the filter bag, and pay attention to adjusting the air volume and dust removal frequency.

-Maintenance: Regularly check the wear of the filter bag, replace the damaged filter bag in time, clean up the internal dust, check the operating status of the equipment, and perform lubrication and maintenance.

Type of bag filter:

-Pulse bag filter: dust is cleaned by pulse blowing.

-Electrostatic Precipitator: Adsorption of dust by electrostatics.

-Cyclone dust collector: Separates dust by centrifugal force.

-Wet dust collector: captures dust by water droplets or water film.

In summary, the bag filter through its well-designed working mechanism and selection principles, while ensuring compliance with environmental standards, can also reflect economic and practical value. Proper operation and maintenance is the key to ensure its long-term stable operation and dust removal effect.