Integrated pressure casting die sprue bush

The invention discloses an integrated pressure casting die sprue bush. The integrated pressure casting die sprue bush comprises a sprue bush body and a connected material trough connected with the sprue bush, wherein the sprue bush body is of a hollow square integral structure, one end of the sprue bush body is connected with a pressure casting machine, and the other end of the sprue bush body is matched with a die pressure chamber; a plurality of cooling water channels are arranged at the front end of the sprue bush body, communicate mutually and used for introducing a coolant, so that a sprue of the die is directly cooled; the connected material trough is of a hollow square integral structure; and one end of the connected material trough comprises a cooling sleeve outer ring (3), a cooling sleeve inner ring (4) and a chute (5). The sprue bush is of the integral square structure, the multiple cooling water channels are arranged in the positions, quite close to a material cake, above the sprue, the cooling ef