Automatic cat litter box

A automatic cat litter box, comprising:

• a rotating drum mechanism;
• wherein the rotating drum mechanism comprises a rotating drum, a door assembly movably connected to the rotating drum, and a waste collection compartment;
• wherein the waste collection compartment is detachably disposed in the rotating drum mechanism, the door assembly comprises a pressing portion, the waste collection compartment is disposed in the rotating drum, the waste collection compartment comprises an opening portion, and the opening portion is annular;
• wherein when the door assembly is closed, the pressing portion is engaged with at least a portion of the opening portion;
• wherein the door assembly comprises a door and a door support, the door support is fixedly connected to the door, the door support is disposed on one side of the door facing an interior of the rotating drum, and the pressing portion is disposed on the door support;
• wherein first reinforcing ribs are disposed on an inner wall of the door support, the first reinforcing ribs are disposed along a circumferential direction of the rotating drum, and the first reinforcing ribs are arranged along an axis direction of the rotating drum;
• wherein second reinforcing ribs are disposed on an outer sidewall of the waste collection compartment, the second reinforcing ribs are disposed along the circumferential direction of the rotating drum, and the second reinforcing ribs are arranged along the axis direction of the rotating drum.