Low-temperature crushing device for extracting agar

The utility model relates to the technical field of agar production, in particular to a low-temperature crushing device for extracting agar, which comprises a driving system, a crushing and filtering system and a collecting tank, the driving system comprises a first gear, a second gear and a motor which are vertically aligned and connected; the crushing and filtering system comprises a first millstone, a second millstone, a third millstone and a fourth millstone which are vertically aligned and connected; the first grinding disc and the second grinding disc are assembled to form a first crushing disc; the third grinding disc and the fourth grinding disc are assembled into a second crushing disc; a first baffle ring and a second baffle ring are fixedly arranged on the lower portion of the second grinding disc and the lower portion of the fourth grinding disc respectively, and a detachable first filter screen and a detachable second filter screen are installed on the first baffle ring and the second baffle ring