Food waste disposer provided with fine regrinding and pressurizing mechanisms in blowdown cavity

The invention relates to a food waste disposer provided with fine regrinding and pressurizing mechanisms in a blowdown cavity. The food waste disposer comprises a casing, a motor, a grinding cavity, the blowdown cavity and a grinding structure, and is characterized in that a blowdown cavity grinding gear ring matched with the blowdown cavity in shape is also arranged in the blowdown cavity; the fine regrinding mechanism is arranged at the lower half part of the grinding cavity and in the blowdown cavity and comprises the blowdown cavity grinding gear ring and a main cutter head, a tool bit and water leaking holes are arranged on the front side of the main cutter head, small grinding cutters perpendicular to the main cutter head are arranged on the back edge of the main cutter head and extend to the bottom of the blowdown cavity, 2-8 large grinding cutters perpendicular to the main cutter head are arranged on the equal-division center line of the back side of the main cutter head, and the blowdown cavity grind