The operation principle of the vacuum cleaner is a vacuum cleaner motor high-speed rotation, from the

inlet suction air, make produce certain vacuum dust box, dust through the brush, takeover, handle, hose,

main straw into the dust filtering bag dust, dust is left in the dust filtering bag inside, the filtered air

through a filter layer into the motor again, to this layer filter is to prevent the dust bag burst dust suction

motor a protective barrier, into the air after the outflow of machine, in the operation of the motor carbon

brush wear constantly, so added a filter before out of a vacuum cleaner.  

HQL-4-XC2: