Low-temperature nitrogen-filling fresh-keeping system for fresh bud rice packaging

The invention provides a low-temperature nitrogen-filling fresh-keeping system for fresh bud rice packaging. The low-temperature nitrogen-filling fresh-keeping system comprises an operation table, wherein a conveying belt is arranged on one side of the top of the operation table, and a limiting assembly is fixedly arranged at the position, located on one side of the conveying belt, of the top of the operation table. According to the low-temperature nitrogen-filling fresh-keeping system for fresh bud rice packaging, a mounting pipe is arranged on one side of a fresh bud rice packaging bag, and a sealing adjusting piece is arranged in the mounting pipe, so that when the interior of the packaging bag is vacuumized and filled with nitrogen, a driving block can be directly pushed by a hydraulic cylinder to drive a connecting pipe to be inserted into the mounting pipe; when an ejector rod and the sealing adjusting piece act, the mounting pipe communicates with the interior of the packaging bag, and then air exhaust