Liquid nitrogen waste gas condensing and recycling device

The utility model discloses a liquid nitrogen waste gas condensing and recycling device which comprises a recycling barrel, and the top of the recycling barrel is fixedly connected with a heat insulation plate. According to the utility model, the condensation pump, the condensation cylinder and other parts on the condensation mechanism are matched for use, the condensation pump is used for providing power, the connection sleeve at the bottom is connected with the condensation cylinder, and the upper circulating pipe and the lower circulating pipe on the periphery of the condensation cylinder are used for condensing liquid nitrogen waste gas in the recovery barrel; and a connecting cylinder at the lower part of the transmission rod is driven to rotate, so that a baffle plate on one side of the connecting cylinder is driven to slide out of a recycling head, condensed liquid nitrogen waste gas is recycled, the working efficiency of liquid nitrogen waste gas recycling is improved, and the problem that a discharge