What is a vacuum cleaner?

Negative pressure vacuum cleaner: the fan is placed behind the vacuum cleaner, and the vacuum cleaner works under negative pressure. This method is widely used because the dust-containing gas enters the fan after purification, which has little wear on the fan.

The fan is located behind the bag filter, and negative pressure is formed inside the filter, so the sealing structure must be adopted. Because it is a closed structure, although the cost is relatively high, it is easy to take measures such as heat preservation, so it is suitable for treating condensable gases with high humidity.

The purpose of dust collector

A dust hood is installed at each dust outlet, and the dust-containing gas is transported to the dust removal device through the pipeline gas path. After gas-solid separation, dust is collected in the dust removal device, and clean gas is introduced into the main pipeline or directly discharged into the atmosphere, that is, the dust removal system, and the dust collector is an important part of the system.

From the point of view of ventilation and dust removal, dust is all small solid particles that can exist in the air in a floating state for a long time. It is a dispersion system called aerosol, in which air is the dispersion medium and solid particles are the dispersed phase. A dust collector is a device that separates such small solid particles from aerosols.

The above contents refer to Baidu Encyclopedia-Dust Remover.