Grooving and dust prevention device for dry hanging stone

The invention discloses a grooving and dust prevention device for dry hanging stone. The grooving and dust prevention device comprises a rack, a dust collection box and a dust output control device, wherein the dust collection box is arranged on the rack, and the dust output control device is arranged at the bottom of the dust collection box and used for controlling the dust output amount. The dust output control device comprises a weigh box, an upper control valve plate and a lower control valve plate, wherein the weigh box communicates with the bottom of the dust collection box; and the upper control valve plate is used for controlling an inlet in the top of the weigh box to be opened and closed, and the lower control valve plate is used for controlling an outlet in the bottom of the weigh box to be opened and closed. The grooving and dust prevention device integrates the dust output mode of the dust collection box; dust output of the dust collection box can be controlled at intervals rhythmically; the dust