Coal mine special bag filter is an efficient and environmentally friendly dust treatment equipment, which is widely used in the coal mining industry. Its working principle can be divided into the following parts:
First of all, after the dust-containing gas enters the box tangentially from the air inlet of the dust collector box, a part of the coarser particle dust rotates along the cylinder wall and falls into the ash hopper due to the action of centrifugal force, which plays the role of primary dust removal. This step is very important for baghouses, because the removal of coarse dust can effectively protect the filter bag and extend its lifespan.
Secondly, another part of the finer dust is trapped outside the filter bag, and the purified gas enters the upper box through the filter bag and is discharged from the air outlet. This step is the main filtration process of the bag filter, through the filtration action of the filter bag, the fine particle dust is left outside the filter bag, and the purified gas is discharged.
Then, when the dust on the surface of the filter bag continues to progress with the filtration condition, the resistance of the dust collector will also increase. In order to keep the equipment within a limited range (generally 1 15kpa), ash cleaning is required to shake off the dust on the surface of the filter bag and reduce the resistance of the equipment.
Finally, this series of products is the method of low-pressure pulse spray cleaning controlled by the ash cleaning controller, so that each filter bag causes the instantaneous expansion of the bag under the action of its injection and induced air source, and the dust on the surface of the filter bag is shaken off, and the dust is discharged by the ash discharge mechanism. This step is the cleaning process of the bag filter, through the low-pressure pulse spray cleaning method, the dust on the surface of the filter bag is shaken off, and then discharged by the ash discharge mechanism.
In general, the working principle of the special bag filter for coal mine is to use the filtering effect of the filter bag and the method of low-pressure pulse injection to filter out the dust in the dust-containing gas and discharge it out of the equipment to achieve the purpose of purifying the gas. This kind of equipment has a wide range of application prospects in the coal mining industry, which can effectively improve environmental quality and ensure the health of workers.
Pulse bag filter