Non-return module and stack assembly having the same

Abstract

This utility model discloses a check valve module and a stacking tray assembly incorporating the module. The check valve module includes a base and a rotating shaft mounted on the base. A rotatable stop block is fitted onto the rotating shaft. An elastic element is disposed on the stop block and located on one side of the rotating shaft. One end of the elastic element is connected to the stop block, and the other end extends upward and connects to the base. The stop block and located on the other side of the rotating shaft have a bearing surface and a stop surface, respectively. An acute angle α is formed between the stop surface below the bearing surface and the bearing surface. The stacking tray assembly incorporating this module includes at least two check valve modules, arranged in pairs facing each other, forming a stacking area above their respective stops for trays to be embedded. This utility model's check valve module and stacking tray assembly incorporating the module facilitate the movement of materials from below the stop block to above, support of the materials by the bearing surface, and automated stacking of trays.

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