Negative-pressure smoke dust collecting system for full mold casting

The utility model relates to the technical field of casting. The negative-pressure smoke dust collecting system for full mold casting comprises a sand box, a centralized sand removing device and a connecting pipe, the two ends of the connecting pipe are connected with a negative-pressure air exhaust connector base of a cover box of the sand box and a negative-pressure air inlet of the centralizedsand removing device respectively, and a sand blocking core is arranged in the centralized sand removing device. The utility model discloses a negative-pressure smoke dust collecting system for full mold casting. A cover box of the sand box is connected with an external centralized desanding device through a connecting pipe; according to the negative-pressure smoke dust collecting system for fullmold casting, smoke dust is collected by pumping negative pressure into the cover box, the centralized sand removing device for collecting gravel is arranged outside the cover box and breaks away fromthe resin, acid and high-t