Gate valve structure with long service life

The utility model relates to the technical field of gate valves, in particular to a long-service-life gate valve structure which comprises a pipeline, the top of the pipeline is fixedly connected with a straight-through pipe, the top of the straight-through pipe is fixedly provided with a threaded pipe, the interior of the threaded pipe is rotationally connected with a threaded rod, and the top of the threaded rod is fixedly connected with a rotating wheel. The connecting ring and the moving rod are used in cooperation, so that the first magnetic pole column rotates in the straight-through pipe, and when the first magnetic pole column and the second magnetic pole column are located on the same plane, due to the fact that the first magnetic pole column and the second magnetic pole column repel each other, the second magnetic pole column is subjected to downward acting force; and through cooperative use of a second magnetic pole column and a connecting rod, a moving wheel drives a cleaning ring to extrude a res