Evaporative pattern casting sprue cup

The utility model discloses an evaporative pattern casting sprue cup which comprises an independently arranged main body and an independently arranged base, wherein the main body comprises an upper-section main body and a lower-section main body which are integrally arranged; an inner cavity is formed inside the upper-section main body; a base accommodation cavity for accommodating the base is formed inside the lower-section main body; the size of the base accommodation cavity is adapted to the overall size of the base; the base comprises a first section and a second section which are arranged from top to bottom in sequence; a cylindrical filtering net base cavity is formed inside the first section; a filtering net is arranged inside the filtering net base cavity; the diameter of the filtering net base cavity is greater than that of a lower-end outlet of a cup-shaped inner cavity; a cylindrical straight sprue is formed inside the second section; the diameter of the straight sprue is smaller than that of the lower-end outlet of the cup-shaped inner cavity; the cup-shaped inner cavity, the filtering net base cavity and the straight sprue are connected and communicated in sequence in a right alignment manner. The evaporative pattern casting sprue cup disclosed by the utility model has a filtering function and is low in cost and easy to manufacture.