Rotational flow sand separating device and sand separating machine

The invention relates to the technical field of building construction, and discloses a rotational flow sand separating device and a sand separating machine, wherein the rotational flow sand separating device comprises at least one swirler and a volt box; the swirler is used for separating mud, the swirler is provided with an input hole for inputting the to-be-separated mud, a first output hole for outputting silt and part of fluid and a second output hole for outputting the other part of fluid, the swirler is communicated with the volt box through the second output hole, and the volt box is used for bearing the fluid output from the second output hole; and the volt box is communicated with the outside through a pipeline. According to the rotational flow sand separating device, effective treatment of the mud can be achieved, the construction efficiency of a project is improved, waste recycling can be achieved, and resources are saved. 本发明涉及建筑施工技术领域，公开了一种旋流分沙装置及分沙机，其中，旋流分沙装置包括至少一个旋流器以及分压箱；旋流器用于对泥浆进行分离，旋流器具有供待分离