Cylinder device

The utility model provides an air cylinder device. The air cylinder device comprises an air cylinder basic unit, a piston unit and a driving unit. Wherein the air cylinder basic unit comprises a particle pumping and discharging chamber, the piston unit comprises a piston and a piston rod, the driving unit comprises an air cylinder driving force air path and a particle pumping and discharging air path, and the particle pumping and discharging air path is communicated with the particle pumping and discharging chamber; the piston rod always passes through the particle pumping and discharging chamber in the process that the piston rod is driven by the piston to move in the axial direction of the cylinder body, and therefore particle pollutants generated by movement of the piston rod can be discharged out of the air cylinder basic unit under the action of the particle pumping and discharging channel, and the problem of particle pollution generated by movement of the air cylinder is solved.Besides, the air cylinder