Patent ID: 8512574

Claim:
A grit chamber, characterized in that a chamber body of the grit chamber is in the shape of a hollow cylinder with a cone-shaped bottom; a grit channel is installed below a center of the cone-shaped bottom; a grit removing device is installed in the grit channel and configured to discharge grit from the grit channel; a wall mixer, a vertical mixer and a spiral grit remover are installed in the chamber body; the wall mixer is installed on a wall of the hollow cylinder; the spiral grit remover is installed at a position adjacent to the cone-shaped bottom and fixed to a center of a top cover of the grit chamber, and is provided with a grit-removing blade for removing grit on the cone-shaped bottom into the grit channel; and the vertical mixer is installed at a position close to the cone-shaped bottom and fixed to the top cover of the grit chamber, and a rotating shaft of the vertical mixer is perpendicular to the wall of the hollow cylinder.