Excrement Screening Device and Method

An excrement screening method, using an excrement screening device, wherein the excrement screening device comprises:

• a rotary receiving piece, which is configured to receive cat litter, wherein the rotary receiving piece is provided with a waste discharge outlet, wherein the rotary receiving piece rotates along a first direction from an initial position;
• a litter blocking piece, which is disposed in the rotary receiving piece, wherein the litter blocking piece is configured to block the cat litter in a case where the rotary receiving piece rotates along a first direction;
• and
• a screening piece, which is disposed in the rotary receiving piece, wherein the screening piece is provided with a plurality of screening holes, and an accommodating cavity is formed by the screening piece, the litter blocking piece and the rotary receiving piece, and
• wherein the excrement screening method comprising:
• cat litter mixed with excrement being filtered and screened through a screening piece;
• the cat litter entering an accommodating cavity and being blocked by a litter blocking piece;
• the excrement being discharged through a waste discharge outlet;
• the rotary receiving piece rotating to the initial position along a direction opposite to the first direction;
• and
• the cat litter in the accommodating cavity returning to a preset position.