Cylinder mechanism and spin dryer

The invention relates to the technical field of wet cleaning, in particular to a cylinder mechanism and a spin dryer, and the cylinder mechanism comprises a cylinder main body which comprises a first end part in the axial direction of the cylinder main body; the first cover component detachably covers the first end part; at least part of the first sealing piece is clamped between the first cover component and the first end part so as to seal a gap between the first cover component and the first end part; the second cover component detachably covers the side part, back to the first end part, of the first cover component; at least part of the second sealing piece is clamped between the first cover component and the second cover component, compared with the prior art, the machining difficulty is lowered, the situation that parts difficult to weld exist is avoided, the hidden leakage phenomenon is avoided, and the service life of the electric connector is prolonged. Especially, the phenomenon that particle impuri