Vacuum cup for hot asphalt test casting mold

The utility model discloses a heat preservation cup for hot asphalt test casting, which comprises a heat preservation cup body, a heat preservation cover, a handle and a power line, and further comprises a cup mouth arranged on the heat preservation cup body, a filter screen, a control panel arranged on the handle, a heating pipe surrounding the cup body and the cup bottom, and a stirring device arranged on the inner bottom surface of the heat preservation cup body, and two adjacent stirring blades are arranged in opposite directions. According to the utility model, asphalt is uniformly heated, and the uniformity and stability of the temperature of an asphalt sample are ensured; the control panel is arranged on the handle, operation is convenient, and meanwhile pollution or damage caused by asphalt is avoided; the adjacent stirring blades are reversely arranged, so that upper, middle and lower layers of asphalt can uniformly flow, the stirring uniformity is improved, and the temperature uniformity of an aspha