Sand box exhaust device

The utility model provides an exhaust device for a sand box, which realizes exhaust of the sand box by adopting an upward exhaust mode. The sand box exhaust device comprises a sand box and an exhaust mechanism arranged in the sand box, the sand box at least comprises a wall, the exhaust mechanism at least comprises a wall exhaust mechanism arranged on the wall, and the wall exhaust mechanism comprises a plurality of exhaust strips connected to the wall. First exhaust holes are formed in at least one surface, facing the interior of the sand box, of the exhaust strip, and an exhaust channel extending from the bottom of the sand box to the top of the sand box is formed in the exhaust strip. In the casting process, hot air is exhausted to the exhaust channel through the exhaust hole, the exhaust channel extends from bottom to top, the hot air is upwards exhausted out of the sand box, and the exhaust mechanism is arranged at the upper part of the sand box to extract the hot air from the exhaust channel, so that th