Dust suction device with storage state

A dust suction device with a storage state, comprising:

• a dust collection barrel, comprising a barrel inner space, an assembling opening communicating with the barrel inner space, and at least two connectors disposed on an outer surface of the dust collection barrel and adjacent to the assembling opening, the assembling opening having an opening diameter;
• a supporting ring placed at the assembling opening, comprising a ring outer diameter larger than the opening diameter, and a ring inner diameter;
• and
• a dust suction assembly, comprising a shell, and at least two connecting structures formed on an outer surface of the shell, the at least two connecting structures being provided for directly assembling with the at least two connectors to restrict the dust suction assembly from separating from the dust collection barrel, the shell having at least one shell outer diameter, a maximum of the at least one shell outer diameter being smaller than the opening diameter, the at least one shell outer diameter being larger than the ring inner diameter, the dust suction assembly having a use state that the supporting ring is provided as a base of the dust suction assembly to stack the dust suction assembly above the dust collection barrel, and a storage state of being placed into a bottom part of the barrel inner space and being completely stored in the barrel inner space;
• wherein the supporting ring is separable from the dust collection barrel and the dust suction assembly without disassembling the dust suction assembly,
• wherein the at least two connectors extend from an outer surface of the dust collection barrel over an outer perimeter of the supporting ring to connect directly with the at least two connecting structures of the dust suction assembly.