The invention discloses a
liquid nitrogen intermittent freezing device for mussels, and solves the problems that the integrity of
mussel myofibril fibers is inevitably destroyed, the
water holding capacity of muscles is reduced, the tenderness is reduced, and the product quality is deteriorated in the freezing storage process due to the fact that traditional flat plate type freezing is carried out on the mussels at present. The device comprises a heat preservation channel, a conveying belt, a
liquid nitrogen storage pool, a sliding rail, a sliding strip, a first telescopic piece, a heat preservation cover, a sliding base, a second telescopic piece, a clamping jaw, a support, a net plate, a clamping strip, a driving
assembly, a
rotating disc, a stirring rod and a gear, a rack is slidably arranged in the
liquid nitrogen storage pool, the rack is connected with the gear in a meshed mode, and a linkage
assembly is arranged in the liquid
nitrogen storage pool; the linkage
assembly is used for driving the
rotating disc and all the stirring rods to rotate forwards and backwards when the clamping jaws move up and down in the liquid
nitrogen storage
pool. According to the device, intermittent liquid
nitrogen low-temperature freezing and freshness locking can be carried out on mussels, the integrity of
mussel myofibril is guaranteed, and the freshness retaining effect is improved.