Multifunctional combined riser

The utility model discloses a multifunctional combined riser, which particularly relates to the technical field of casting and comprises a molten iron pouring cup, a filter cavity is fixedly arranged at the bottom end of the molten iron pouring cup, a filter screen is arranged in the filter cavity, a heating chamber is arranged at the bottom end of the filter cavity, an easy diaphragm piece is arranged at the bottom end of the heating chamber, and a communicating hole is formed in the easy diaphragm piece. A connecting ring is fixedly arranged at the top end of the heating chamber, a fastening bolt is arranged at the outer end of the connecting ring, and a fixing frame is fixedly arranged at the outer end of the filter screen. The riser is composed of the molten iron pouring cup, the filtering cavity, the heating chamber, the easily-separated piece and the like, shrinkage porosity, burnt-on sand and slag holes of a casting can be effectively eradicated in the using process of the riser, the product quality is