Sand adding device for casting

The utility model discloses a sand adding device for casting, and aims to solve the problems that in the prior art, manual operation for discharging is needed, a sand blocking plate cannot stably seal a sand containing barrel during sand adding, sand leakage is easily caused, and the accuracy of the sand amount is affected. According to the technical scheme, the sand adding device for casting is characterized by comprising a support, a sand storage barrel and a sand receiving barrel are arranged at the upper end and the lower end of the support respectively, a discharging opening of the sand storage barrel is communicated with a feeding opening of the sand receiving barrel through a connecting pipe, and a connecting rod is slidably connected to the support and provided with a first baffle and a second baffle; the first baffle is slidably connected into the discharging opening of the sand storage barrel, and the second baffle is slidably connected into the feeding opening of the sand receiving barrel. Accordin