Impurity removal device for feeding hole of double-helix instant freezer

The utility model discloses an impurity removal device for a feed port of a double-helix instant freezer, which relates to the technical field of lobster quick freezing and comprises an impurity removal box arranged at the feed port of the instant freezer and a mesh belt conveyor belt arranged on the impurity removal box, and further comprises a collection box arranged in the impurity removal box, the sliding block is assembled to be arranged in the collecting box in a sliding mode through a sliding block and fixed in the impurity removing box through a clamping assembly, and the sliding block is used for pulling out the collecting box from the impurity removing box in a sliding mode; the pull ring is arranged on the sliding block and can drive the clamping assembly to rotate and incline around the central axis of the fixing shaft when rotating, so that the collecting box is unlocked. The screening device has the advantages that the collecting box can be taken out in a sliding mode through the arrangement of