Metal melting apparatus and method for melting metal
AssigneePinda Technology Co., Ltd.
InventorShao-Hua Lu
Life of this patent
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Abstract
A metal melting apparatus has a heating furnace, a melting furnace mounted on the heating furnace, a high-cycle regenerative system (HRS), a raw material feeding device and a melted material feeding device mounted on the melting furnace. The HRS heats and recycles high temperature air in the heating furnace and guides the high temperature air to the preheating screw to preheat metal materials in the preheating screw. Thus, a time for melting the metal materials from solid to liquid is greatly shortened. Furthermore, a series of processes for preheating the metal materials in the raw material feeding device, melting the metal materials in the melting furnace and injecting the molten materials to the molds is fluent, time-saving and safe, and can progress continuously.
Claims20
A metal melting apparatus comprising:
- a heating furnace having a heating room;
- a melting furnace mounted on the heating furnace and having
- a furnace body mounted in the heating room of the heating furnace and having a top opening;
- and
- a cover mounted on the top opening of the furnace body and sealing the furnace body;
- a high-cycle regenerative system (HRS) having
- a regenerative heat room communicating with the heating room;
- a pair of burners mounted in the regenerative heat room and heating the heating room of the heating furnace alternately;
- a pair of regenerative heat exchanger units respectively mounted on the pair of burners;
- and
- an air duct having
- an inlet connected to and communicating with the pair of burners;
- and
- an outlet protruding out of the regenerative heat room;
- a raw material feeding device having
- feed pipe having an outlet communicating with the furnace body;
- a preheating screw axially mounted through the feed pipe and having
- an air duct rotatably mounted through the feed pipe and having
- multiple air holes separately formed through the air duct of the preheating screw;
- and
- an inlet connected to and communicating with the outlet of the air duct of the HRS;
- and
- a helical blade formed around an outer surface of the air duct of the preheating screw;
- and
- a feeding hopper mounted on the feed pipe, and connected to and communicating with an interior of the feed pipe;
- and
- a melted material feeding device mounted on the cover of the melting furnace and protruding into the furnace body.
A method for melting metal in a metal melting apparatus comprising:
- a heating furnace having a heating room;
- a melting furnace mounted on the heating furnace and having
- a furnace body mounted in the heating room of the heating furnace and having a top opening;
- and
- a cover mounted on the top opening of the furnace body and sealing the furnace body;
- a high-cycle regenerative system (HRS) having
- a regenerative heat room communicating with the heating room;
- a pair of burners mounted in the regenerative heat room and heating the heating room of the heating furnace alternately;
- a pair of regenerative heat exchanger units respectively mounted on the pair of burners;
- and
- an air duct having
- an inlet connected to and communicating with the pair of burners;
- and
- an outlet protruding out of the regenerative heat room;
- a raw material feeding device having
- a feed pipe having an outlet communicating with the furnace body;
- a preheating screw axially mounted through the feed pipe and having
- an air duct rotatably mounted through the feed pipe and having
- multiple air holes separately formed through the air duct of the preheating screw;
- and
- an inlet connected to and communicating with the outlet of the air duct of the HRS;
- and
- a helical blade formed around an outer surface of the air duct of the preheating screw;
- and
- a feeding hopper mounted on the feed pipe, and connected to and communicating with an interior of the feed pipe;
- and
- a melted material feeding device mounted on the cover of the melting furnace and protruding into the furnace body, wherein the method comprises steps of:
- guiding high temperature air from the heating room of the heating furnace via the air duct of the HRS to the regenerative heat room and the air duct of the preheating screw of the raw material feeding device to heat metal materials in the feed pipe;
- and
- pushing the metal materials via the preheating screw into the furnace body of the melting furnace to melt the metal materials into liquid.
Dependencies are inferred from the claim text.