Automatic opening and closing plate type gate valve

The utility model discloses an automatic opening and closing plate type gate valve which comprises a gate plate, a worm connected to the gate plate, a worm gear, a speed reducer and a motor connected in sequence, the worm and the worm gear are meshed with each other, and the motor drives the speed reducer to rotate so as to drive the worm gear to rotate to enable the worm to do axial rectilinear motion to complete opening and closing of the gate plate. The automatic opening and closing plate type gate valve can achieve the expected goal of quick opening and closing of the gate plate. The manual operation of two workers is not needed, and the ascending and descending actions of the flashboard can be easily controlled by manually operating the emergency hand wheel in case of sudden power failure, so that not only are the aims of increasing the speed and reducing burden achieved, but also the double functions of being capable of being operated by both electricity and hands are achieved. 本实用新型公开了一种自动开合板式闸阀，包括闸板，所