Fixed rectangular fuel gas aluminum melting furnace

The utility model is applicable to the technical field of aluminum melting furnaces, and provides a fixed rectangular gas aluminum melting furnace which comprises a steel structure main body, an inclined furnace opening is formed in the side wall of the steel structure main body, a guide rail is fixed on each of two sides of the furnace opening, and a furnace door capable of blocking the furnace opening is arranged between the two guide rails. Guide wheels connected with the guide rails in a matched mode are installed on the two sides of the furnace door, a balance weight guide groove is fixed to the side, away from the furnace opening, of the steel structure body, a balance weight box is installed on the balance weight guide groove in a sliding mode, and a first transmission mechanism and a second transmission mechanism are arranged on the top of the steel structure body. The chain is further connected with the first transmission mechanism and the second transmission mechanism, the end, away from the furnace