Aluminum melting furnace with waste heat recovery structure

Abstract

The utility model discloses an aluminum melting furnace with a waste heat recovery structure, which comprises an aluminum melting furnace body, an oil tank, an external pump, a pump valve and a circulating oil tank, the oil tank is arranged on one side of the aluminum melting furnace body, the external pump is arranged at the top end of the oil tank, the pump valve is arranged on one side of the external pump, and the circulating oil tank is arranged at the top end of the aluminum melting furnace body. According to the aluminum melting furnace with the waste heat recovery structure, heat conduction oil is pumped into the circulating oil pipe through the built-in pump machine, the heat conduction oil circulates in the circulating oil pipe and then enters the oil tank body again for continuous circulation under the guidance of the return pipe, and when the first batch of heat conduction oil absorbs waste heat to be saturated, the heat conduction oil passes through the circulating oil pipe and then enters the oil tank body for continuous circulation. The external valve is opened, the reflux valve is closed, the first batch of heat conduction oil is discharged and stored from the external pipe, then the second batch of heat conduction oil is introduced to repeatedly absorb the residual heat in the built-in furnace frame, and the heat absorption step of the first batch of heat conduction oil is repeated by the second batch of heat conduction oil until the residual heat in the built-in furnace frame is completely absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum melting furnaces, in particular to an aluminum melting furnace with a residual heat recovery structure. Background Art

[0002] Aluminum melting furnace is a special industrial furnace used to melt aluminum and its alloys. In the manufacturing and metal processing industries, it mainly heats the aluminum raw material to above the melting point to melt it into a liquid state for casting, forging or other metal forming processes. However, after the processing of metal aluminum or aluminum alloy is completed, there will be residual heat inside the aluminum melting furnace that cannot be used, resulting in heat waste. In the existing technology, the gas with residual temperature is usually extracted and stored to achieve heat recovery. In this way, when the residual temperature is recovered, the gas with residual temperature needs to be extracted for a long time, resulting in poor recovery efficiency and incomplete recovery. Utility Model Content

[0003] The utility model aims to provide an aluminum melting furnace with a residual heat recovery structure to solve the problems of poor efficiency and incomplete recovery of residual heat in the prior art mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aluminum melting furnace with a residual heat recovery structure, comprising an aluminum melting furnace body, an oil tank, an external pump and a pump valve, and a circulating oil tank, an oil tank is provided on one side of the aluminum melting furnace body, an external pump is provided on the top of the oil tank, a pump valve is provided on one side of the external pump, and a circulating oil tank is provided on the top of the aluminum melting furnace body;

[0005] The aluminum melting furnace body includes an external furnace frame, an internal furnace frame, an insulation net, an internal furnace body, a circulating oil pipe, a reflux pipe and a reflux valve. The internal furnace frame is provided on the inner side of the external furnace frame, an insulation net is provided between the internal furnace frame and the external furnace frame, an internal furnace body is provided on the inner side of the internal furnace frame, a circulating oil pipe is provided on the outer side of the internal furnace body, a reflux pipe is provided below the circulating oil pipe, and a reflux valve is provided on the reflux pipe.

[0006] Preferably, the circulating oil tank includes an oil tank body, an upper docking tube, a built-in pump, a lower docking tube and a return docking tube. The top of the oil tank body is provided with an upper docking tube, the bottom end of the oil tank body is provided with a built-in pump, the bottom end of the built-in pump is provided with a lower docking tube, and one side of the built-in pump is provided with a return docking tube.

[0007] Preferably, the return pipe and the circulating oil pipe are interconnected, and the switch of the return valve controls the circulation of the return pipe.

[0008] Preferably, an external pipe is provided at the top end of the circulating oil pipe, and an external valve is provided on one side of the external pipe, and the switch of the external valve controls the flow of the external pipe.

[0009] Preferably, a heating device is provided inside the inner furnace body, and the inner furnace body is a place for smelting metal aluminum and aluminum alloys.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model discloses an aluminum melting furnace with a residual heat recovery structure, which heats metal aluminum in an inner furnace body and uses a heat preservation net to isolate the inside and outside of an external furnace frame to slow down the loss of residual heat, and then circulates and absorbs the residual heat through the heat transfer oil in the circulating oil pipe. When the first batch of heat transfer oil is saturated, the heat transfer oil is discharged and stored, and the second batch of heat transfer oil is introduced to circulate and absorb the residual heat, thereby achieving complete absorption of the residual temperature inside the built-in furnace frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the utility model as a whole;

[0013] Figure 2 It is a cross-sectional view of the aluminum melting furnace body of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the circulating oil tank of the utility model.

[0015] In the figure: 1. aluminum melting furnace body; 11. external furnace frame; 12. internal furnace frame; 13. insulation net; 14. internal furnace body; 15. circulating oil pipe; 16. external pipe; 17. external valve; 18. return pipe; 19. return valve; 2. oil tank; 3. external pump; 4. pump valve; 5. circulating oil tank; 51. oil tank body; 52. upper butt joint pipe; 53. internal pump; 54. lower butt joint pipe; 55. return butt joint pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3, an aluminum melting furnace with a residual heat recovery structure, comprising an aluminum melting furnace body 1, an oil tank 2, an external pump 3 and a pump valve 4, and also comprising a circulating oil tank 5, an oil tank 2 is provided on one side of the aluminum melting furnace body 1, an external pump 3 is provided on the top of the oil tank 2, a pump valve 4 is provided on one side of the external pump 3, a circulating oil tank 5 is provided on the top of the aluminum melting furnace body 1, the external pump 3 can extract the heat transfer oil in the oil tank 2 and transport it to the circulating oil tank 5, the aluminum melting furnace body 1 comprises an external furnace frame 11, an internal furnace frame 12, an insulation net 13, an internal furnace body 14, a circulating oil pipe 15, a reflux pipe 18 and a reflux valve 19, an internal furnace frame 12 is provided on the inner side of the external furnace frame 11, a heat preservation net 13 is provided between the internal furnace frame 12 and the external furnace frame 11, the heat preservation net 13 protects the residual temperature inside the internal furnace frame 12 and slows down the loss of heat, an internal furnace body 14 is provided on the inner side of the internal furnace frame 12, a circulating oil pipe 15 is provided on the outer side of the internal furnace body 14, the heat transfer oil circulates in the circulating oil pipe 15 to absorb heat, a reflux pipe 18 is provided below the circulating oil pipe 15, and a reflux valve 19 is provided on the reflux pipe 18, and the reflux valve 19 controls the circulation of the reflux pipe 18.

[0018] Furthermore, the circulating oil tank 5 includes an oil tank body 51, an upper docking pipe 52, a built-in pump 53, a lower docking pipe 54 and a return docking pipe 55. The top of the oil tank body 51 is provided with an upper docking pipe 52, the upper docking pipe 52 is connected to the external pump 3, and the pump valve 4 controls the circulation of the upper docking pipe 52. The bottom end of the oil tank body 51 is provided with a built-in pump 53, and the bottom end of the built-in pump 53 is provided with a lower docking pipe 54. The built-in pump 53 can extract the heat transfer oil in the oil tank body 51 and guide it to the lower docking pipe 54. A return docking pipe 55 is provided on one side of the built-in pump 53. The return docking pipe 55 is interconnected with the return pipe 18. The heat transfer oil in the circulating oil pipe 15 enters the return pipe 18 after circulation, and then returns to the oil tank body 51 from the return docking pipe 55 after being guided by the return pipe 18.

[0019] Furthermore, the return pipe 18 and the circulating oil pipe 15 are interconnected, and the switch of the return valve 19 controls the circulation of the return pipe 18. After the return valve 19 is opened, the heat transfer oil flows back from the return pipe 18 to the oil tank body 51. After the return valve 19 is closed, the heat transfer oil can be guided to the external pipe 16.

[0020] Furthermore, an external pipe 16 is provided at the top end of the circulating oil pipe 15 , and an external valve 17 is provided at one side of the external pipe 16 . The opening and closing of the external valve 17 controls the flow of the external pipe 16 .

[0021] Furthermore, a heating device is provided inside the inner furnace body 14 , which is a place for melting metal aluminum and aluminum alloys, to reduce heat loss during the heating process, and the heat preservation net 13 further insulates the residual heat.

[0022] Working principle: The utility model is an aluminum melting furnace with a residual heat recovery structure. When in use, the temperature inside the inner furnace body 14 rises to process the metal aluminum. After heating is completed, the residual heat generated is locked in the interior of the built-in furnace frame 12 by the heat preservation net 13, and at the same time, the external pump 3 draws the heat transfer oil in the oil tank 2 to allow the heat transfer oil to enter the oil tank body 51, and then the built-in pump 53 draws the heat transfer oil into the circulating oil pipe 15. After the heat transfer oil circulates in the circulating oil pipe 15, it re-enters the oil tank body 51 under the guidance of the reflux pipe 18 for continuous circulation. When the first batch of heat transfer oil absorbs the residual heat to saturation, it passes through the circulating oil pipe 15, opens the external valve 17 and closes the reflux valve 19, discharges the first batch of heat transfer oil from the external pipe 16 for storage, and then introduces the second batch of heat transfer oil to repeatedly absorb the residual heat inside the built-in furnace frame 12. The second batch of heat transfer oil repeats the heat absorption steps of the first batch of heat transfer oil until the residual heat inside the built-in furnace frame 12 is completely absorbed.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum melting furnace with a residual heat recovery structure, comprising an aluminum melting furnace body (1), an oil tank (2), an external pump (3) and a pump valve (4), characterized in that: It also comprises a circulating oil tank (5), an oil tank (2) is provided on one side of the aluminum melting furnace body (1), an external pump (3) is provided on the top of the oil tank (2), a pump valve (4) is provided on one side of the external pump (3), and a circulating oil tank (5) is provided on the top of the aluminum melting furnace body (1); The aluminum melting furnace body (1) comprises an external furnace frame (11), an internal furnace frame (12), a heat preservation net (13), an internal furnace body (14), a circulating oil pipe (15), a return pipe (18) and a return valve (19); the internal furnace frame (12) is provided on the inner side of the external furnace frame (11); a heat preservation net (13) is provided between the internal furnace frame (12) and the external furnace frame (11); the internal furnace body (14) is provided on the inner side of the internal furnace frame (12); the circulating oil pipe (15) is provided on the outer side of the internal furnace body (14); a return pipe (18) is provided below the circulating oil pipe (15); and a return valve (19) is provided on the return pipe (18).

2. The aluminum melting furnace with a residual heat recovery structure according to claim 1, characterized in that: The circulating oil tank (5) comprises an oil tank body (51), an upper butt joint pipe (52), a built-in pump (53), a lower butt joint pipe (54) and a return butt joint pipe (55); the upper butt joint pipe (52) is provided at the top of the oil tank body (51), the built-in pump (53) is provided at the bottom of the oil tank body (51), the lower butt joint pipe (54) is provided at the bottom of the built-in pump (53), and the return butt joint pipe (55) is provided on one side of the built-in pump (53).

3. The aluminum melting furnace with a residual heat recovery structure according to claim 1, characterized in that: The return pipe (18) and the circulating oil pipe (15) are in communication with each other, and the opening and closing of the return valve (19) controls the circulation of the return pipe (18).

4. The aluminum melting furnace with a residual heat recovery structure according to claim 1, characterized in that: An external pipe (16) is provided at the top end of the circulating oil pipe (15), and an external valve (17) is provided at one side of the external pipe (16). The opening and closing of the external valve (17) controls the flow of the external pipe (16).

5. The aluminum melting furnace with a residual heat recovery structure according to claim 1, characterized in that: A heating device is provided inside the inner furnace body (14), and the inner furnace body (14) is a place for smelting metal aluminum and aluminum alloys.

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