The utility model belongs to the technical field of
liquid nitrogen quick-freezing equipment, and particularly relates to
liquid nitrogen quick-freezing equipment for
fish head processing, which comprises a base, the upper end of the base is in contact with a cover, a backing ring is fixedly connected in the base, a mounting seat is slidably connected in the cover, the mounting seat is slidably connected with the base, and the backing ring is fixedly connected with the base. The lower end of the mounting seat is in contact with a sealing
gasket, and the upper end of the sealing
gasket is fixedly connected with a clamping block. The sealing
gasket, the backing ring and other key components are innovatively designed and elaborately arranged, the sealing degree between the cover and the base can be effectively increased, the
threaded rod is ingeniously matched, the sealing gasket and the backing ring can be accurately driven to be tightly attached through flexible rotation, the sealing effect between the cover and the base is greatly improved, and the service life of the cover is prolonged. The problems that
liquid nitrogen quick-freezing equipment for
fish head processing is poor in sealing performance and liquid
nitrogen is prone to leaking when used are fundamentally solved, and stable and efficient operation of the equipment is assisted.