Melting furnace waste heat recycling device

Abstract

The utility model relates to the technical field of smelting furnace waste heat recycling devices, and discloses a smelting furnace waste heat recycling device which comprises a smelting furnace body, one side of the smelting furnace body is symmetrically and fixedly connected with one end of a burner, the other end of the burner is fixedly connected to one side of a heat accumulator, and the bottom of the heat accumulator is fixedly connected with a support. Gas ports are symmetrically and fixedly connected to the outer side of the heat accumulator, a reversing valve is arranged on one side of the heat accumulator, the reversing valve is fixedly connected with the part, located in the heat accumulator, of the burner, an exhaust port is formed in the outer side of the smelting furnace body, and a waste heat recovery device is arranged at the exhaust port. According to the utility model, during smelting, flue gas exhausted from the exhaust port enters the lower recycling box through the first pipeline via the air inlet, is cooled by the heat pipe in the lower recycling box after absorbing heat and then is conveyed to the induced draft fan through the second pipeline, and normal-temperature air is blown into the third pipeline by the air blower and enters the upper recycling box; after being contacted and heated with heat recycled by the lower recycling box, the gas is conveyed to the gas outlet through a fourth pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace waste heat recovery devices, in particular to a melting furnace waste heat recovery and utilization device. Background Art

[0002] The processing of aluminum ingots requires putting scrap aluminum or scrap aluminum alloy into a smelting furnace for melting, and then processing it into aluminum ingots. For large smelting furnaces, the temperature in the furnace may be uneven, and the supplementary heating device can solve this problem by providing additional heating in a targeted manner to ensure that the smelting material is heated evenly. The temperature needs to be strictly controlled during the smelting process to ensure the quality of the smelting material and production efficiency. The supplementary heating device can help maintain the temperature in the furnace within the required range and provide more precise process control. In some smelting processes, the smelting furnace needs to maintain a continuous high temperature to keep the metal or other substances in a molten state. The use of a supplementary heating device can ensure the stability of the furnace temperature and improve energy utilization, thereby saving energy costs.

[0003] In the prior art, in order to ensure that the temperature in the furnace is always heated, energy needs to be added continuously. Fuel or electricity is usually used to melt the aluminum alloy into liquid. When smelting the metal, the melting furnace is always emitting heat, and a large amount of heat remains on the outer wall of the melting furnace. However, this heat cannot be collected manually, resulting in the loss of heat, causing a waste of resources and increasing the cost of use. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a melting furnace waste heat recovery and utilization device, which aims to improve the problem that in order to ensure that the temperature in the furnace is always heated, energy needs to be continuously added, usually using fuel or electricity to melt the aluminum alloy into liquid. When smelting metal, the melting furnace is always emitting heat, and a large amount of heat remains on the outer wall of the melting furnace. However, the heat cannot be collected manually, resulting in the loss of heat, causing waste of resources and increasing the cost of use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a melting furnace waste heat recovery device, comprising a melting furnace main body, a top cover is provided on the top of the melting furnace main body, one end of a burner is symmetrically fixedly connected to one side of the melting furnace main body, the other end of the burner is fixedly connected to one side of a heat accumulator, a bracket is fixedly connected to the bottom of the heat accumulator, an air port is symmetrically fixedly connected to the outer side of the heat accumulator, a reversing valve is provided on one side of the heat accumulator, the reversing valve is fixedly connected to the part of the burner located in the heat accumulator, an exhaust port is opened on the outer side of the melting furnace main body, and the exhaust port is provided with a waste heat recovery device.

[0006] Preferably, the waste heat recovery device includes an air inlet, one end of the air inlet is fixedly connected to a first pipe, one end of the first pipe is fixedly connected to a lower recovery box, a heat pipe is provided in the lower recovery box, one side of the lower recovery box is fixedly connected to a second pipe, and one end of the second pipe is fixedly connected to an induced draft fan.

[0007] Preferably, the top of the lower recovery box is fixedly connected to an upper recovery box, the upper recovery box is provided with the same heat pipe, one side of the upper recovery box is fixedly connected to a third pipe, one end of the third pipe is fixedly connected to a blower, the other side of the upper recovery box is fixedly connected to a fourth pipe, one end of the fourth pipe is fixedly connected to an air outlet.

[0008] Preferably, an aluminum ladle is provided on one side of the exterior of the smelting furnace body, the exterior of the aluminum ladle is fixedly connected to a canning launder, one end of the canning launder is externally fixedly connected to an aluminum water pool, an inner side of the aluminum water pool is provided with a water outlet launder, the interior of the aluminum water pool is provided with a water inlet, a return water launder is provided on the other side of the interior of the aluminum water pool, the return water launder is fixedly connected to one end of a delivery pipe, the other end of the delivery pipe is fixedly connected to the smelting furnace body, and the exterior of the aluminum water pool is fixedly connected to an aluminum water pump body.

[0009] Preferably, a furnace door is opened inside one end of the smelting furnace body, one end of a chain is symmetrically fixedly connected to the outer side of the top of the furnace door, the other end of the chain is fixedly connected to a roller, the inside of the roller is fixedly connected to a motor, the outside of the motor is fixedly connected to the top of the fixed plate, the output end of the motor is fixedly connected to a rotating rod, both ends of the outside of the rotating rod are fixedly connected to the inside of the roller, both ends of the bottom of the fixed plate are fixedly connected to fixing rods, one end of the fixing rod is externally fixedly connected to the outside of the smelting furnace body, a smelting chamber is provided inside the smelting furnace body, one end of the chain passes through the fixed plate and is fixedly connected to the outside of the roller.

[0010] Preferably, the inner wall of the smelting furnace body is provided with first insulation bricks, the outside of the first insulation bricks is provided with second clay bricks, and the bottom end of the smelting furnace body is provided with first clay bricks.

[0011] Preferably, a first high-aluminum brick is disposed on the outside of the first thermal insulation brick, a second thermal insulation brick is disposed on the bottom of the inner wall of the smelting furnace body, and a second high-aluminum brick is disposed on the outside of the second thermal insulation brick.

[0012] Preferably, a plurality of furnace temperature measuring ports are provided inside the smelting furnace body, and thermometers are provided inside each of the furnace temperature measuring ports.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, when smelting is carried out, the smoke discharged from the exhaust port enters the lower recovery box through the air inlet through the first pipe, and is sent to the induced draft fan through the second pipe after absorbing heat and cooling by the heat pipe in the lower recovery box. A purification device can be installed at the induced draft fan to purify the smoke before discharging it into the atmosphere to reduce pollution. Normal temperature air is blown into the third pipe by the blower and enters the upper recovery box. After being heated by the heat recovered by the lower recovery box, it is sent to the air outlet through the fourth pipe. The air outlet can be connected to the heat accumulator for reuse to reduce the use of fuel.

[0015] 2. In the utility model, the hot air in the heat accumulator can be transported to the smelting chamber through the burner, and the state of the burner can be switched by the reversing valve, so that the flue gas with a lower temperature in the smelting chamber is sucked into the heat accumulator for reheating. When it is heated to a certain temperature, the reversing valve is started again to transport hot air to the smelting chamber, so as to keep the temperature in the smelting chamber. The heat accumulator can absorb and store heat during the combustion process, so as to reduce fuel consumption and energy waste. At the same time, the regenerative burner can also reduce the emission of nitrogen oxides and particulate matter generated by combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front cross-sectional view of the melting furnace waste heat recovery and utilization device proposed by the utility model;

[0017] Figure 2 This is a top view of the cross-sectional view of the device for recovering waste heat from a melting furnace proposed in the utility model;

[0018] Figure 3 It is a side cross-sectional view of the melting furnace waste heat recovery and utilization device proposed by the utility model;

[0019] Figure 4 This is a partial structural cross-sectional view of the melting furnace waste heat recovery and utilization device proposed in the utility model;

[0020] Figure 5 It is a partial cross-sectional view of the waste heat recovery device of the melting furnace waste heat recovery and utilization device proposed by the utility model.

[0021] Legend:

[0022] 1. Melting furnace body; 2. Fixed rod; 3. Fixed plate; 4. Top cover; 5. Chain; 6. Roller; 7. Rotating rod; 8. Motor; 9. Furnace temperature measuring port; 10. Melting chamber; 11. Heat accumulator; 12. Aluminum water pump body; 13. Aluminum water bag; 14. Canned ladle; 15. Water outlet ladle; 16. Water inlet; 17. Return ladle; 18. First clay brick; 19. Second clay brick; 20. First insulation brick; 21. First high-aluminum brick; 22. 2. Second high-alumina brick; 23. Second insulation brick; 24. Furnace door; 25. Aluminum pool; 26. Bracket; 27. Burner; 28. Air port; 29. ​​Reversing valve; 30. Exhaust port; 31. Delivery pipe; 32. Thermometer; 33. Air inlet; 34. First pipeline; 35. Lower recovery box; 36. Heat pipe; 37. Upper recovery box; 38. Second pipeline; 39. Draft fan; 40. Blower; 41. Third pipeline; 42. Fourth pipeline; 43. Air outlet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments 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.

[0024] Reference Figure 1-Figure 3 The utility model provides an embodiment: a melting furnace waste heat recovery device, comprising a melting furnace body 1, a top cover 4 is provided on the top of the melting furnace body 1, one end of a burner 27 is symmetrically fixedly connected to one side of the melting furnace body 1, the other end of the burner 27 is fixedly connected to one side of the heat accumulator 11, a bracket 26 is fixedly connected to the bottom of the heat accumulator 11, a gas port 28 is symmetrically fixedly connected to the outer side of the heat accumulator 11, a reversing valve 29 is provided on one side of the heat accumulator 11, and the reversing valve 29 is fixedly connected to the part of the gas port 28 located in the heat accumulator 11, and the inside of the melting furnace body 1 A smelting chamber 10 is provided, one end of a burner 27 is communicated with the smelting chamber 10, an exhaust port 30 is provided on the outer side of the smelting furnace body 1, the burner 27 can transport the hot air in the heat accumulator 11 to the smelting chamber 10, and the hot air on the heat pipe 33 is transmitted to the heat accumulator 11 by means of the air port 28 to heat the internal air, and the state of the burner 27 can be switched by the reversing valve 29, and the flue gas with a lower temperature in the smelting chamber 10 can be sucked into the heat accumulator 11 for reheating, and the reversing valve 29 is started again to transport hot air to the smelting chamber 10 after being heated to a certain temperature.

[0025] Reference Figure 5The waste heat recovery device includes an air inlet 33, one end of which is fixedly connected to a first pipe 34, one end of which is fixedly connected to a lower recovery box 35, a heat pipe 36 is arranged in the lower recovery box 35, a second pipe 38 is fixedly connected to one side of the lower recovery box 35, one end of the second pipe 38 is fixedly connected to an induced draft fan 39, an upper recovery box 37 is fixedly connected to the top of the lower recovery box 35, the upper recovery box 37 is provided with the same heat pipe 36, one side of the upper recovery box 37 is fixedly connected to a third pipe 41, one end of the third pipe 41 is fixedly connected to a blower 40, the other side of the upper recovery box 37 is fixedly connected to a fourth pipe 42, and the fourth One end of the pipe 42 is fixedly connected with an air outlet 43. The flue gas discharged from the exhaust port 30 enters the lower recovery box 35 through the air inlet 33 and the first pipe 34. After the heat pipe 36 in the lower recovery box 35 absorbs heat and cools down, it is sent to the induced draft fan 39 through the second pipe 38. A purification device can be installed at the induced draft fan 39 to purify the flue gas before discharging it into the atmosphere to reduce pollution. Normal temperature air is blown into the third pipe 41 by the blower 40 and enters the upper recovery box 37. After being heated by the heat recovered by the lower recovery box 35, it is sent to the air outlet 43 through the fourth pipe 42. The air outlet 43 can be connected to the heat accumulator 11 for reuse to reduce the use of fuel.

[0026] Reference Figure 1 and Figure 2 A furnace door 24 is provided inside one end of the smelting furnace body 1, and one end of a chain 5 is symmetrically fixedly connected to the outer side of the top of the furnace door 24, and the other end of the chain 5 is fixedly connected to a roller 6, and a motor 8 is fixedly connected to the inside of the roller 6, and the outer side of the motor 8 is fixedly connected to the top of the fixed plate 3, and the output end of the motor 8 is fixedly connected to a rotating rod 7, and the outer ends of the rotating rod 7 are fixedly connected to the inside of the roller 6, one end of the chain 5 passes through the fixed plate 3 and is fixedly connected to the outer side of the roller 6, and the bottom ends of the fixed plate 3 are fixedly connected to a fixed rod 2, and one end of the fixed rod 2 is fixedly connected to the outside of the smelting furnace body 1, and the motor 8 drives the rotating rod 7 to rotate to drive the roller 6 to rotate, thereby driving the chain 5 to move, and when the chain 5 moves, it will drive the furnace door 24 to move, and by opening the furnace door 24, it is more convenient to add materials to the aluminum mouth and remove slag.

[0027] Reference Figure 1 and Figure 3An aluminum ladle 13 is provided on one side of the outside of the smelting furnace body 1, and a canning launder 14 is fixedly connected to the outside of the aluminum ladle 13. An aluminum water pool 25 is fixedly connected to one end of the canning launder 14. An outlet launder 15 is provided on one side of the inside of the aluminum water pool 25. A water inlet 16 is provided inside the aluminum water pool 25. A return launder 17 is provided on the other side of the inside of the aluminum water pool 25. One end of the conveying pipe 31 is fixedly connected to the return launder 17. The other end of the conveying pipe 31 is fixedly connected to the smelting furnace body 1. The outside of the aluminum water pool 25 is fixedly connected to the outside of the aluminum water pool 25. An aluminum water pump body 12 is fixedly connected, and the aluminum water pump body 12 can transport the aluminum water in the aluminum water pool 25 to the inside of the smelting furnace body 1 through the water inlet 16 and the return water flow channel 17, and then heat the aluminum water through the smelting furnace body 1. After the heating is completed, the aluminum water pump body 12 is started again to drive the aluminum water to flow back. When the aluminum water flows into the water outlet flow channel 15, the return water flow channel 17 is closed, and the aluminum water is transported to the aluminum water bag 13 through the canning flow channel 14, so as to achieve the effect of filling the aluminum water bag 13.

[0028] Reference Figure 4 A plurality of furnace temperature measuring ports 9 are provided inside the smelting furnace body 1, and thermometers 32 are provided inside each of the furnace temperature measuring ports 9. The effect of the temperature inside the furnace can be checked more conveniently through the thermometers 32 provided inside the furnace temperature measuring ports 9.

[0029] Reference Figure 2 and Figure 4 The inner wall of the smelting furnace body 1 is provided with a first insulation brick 20, the outside of the first insulation brick 20 is provided with a second clay brick 19, the bottom of the inner wall of the smelting furnace body 1 is provided with a first clay brick 18, the outside of the first insulation brick 20 is provided with a first high-aluminum brick 21, the bottom of the inner wall of the smelting furnace body 1 is provided with a second insulation brick 23, and the outside of the second insulation brick 23 is provided with a second high-aluminum brick 22. Clay bricks can be used to help keep warm, reduce heat loss, and ensure the temperature in the smelting chamber 10. Insulation bricks can reduce heat transmission and loss, thereby improving the energy utilization efficiency of the smelting furnace body 1. High-aluminum bricks are made of heat-resistant materials, which can prevent the aluminum wall from being damaged by heat and extend the service life of the equipment.

[0030] Working principle: Start the motor 8 to drive the chain 5 to move and open the furnace door 24, put the aluminum material and the mixed material into the smelting chamber 10, close the furnace door 24, start the heat accumulator 11 to continuously supply heat to the smelting chamber 10 to smelt the metal, and at the same time, mix the mixed material with the aluminum material by means of the exothermic diffusion method, and release heat during the mixing process. The combination of the heat accumulator 11 and the burner 27 can effectively reduce fuel consumption and energy waste. After smelting is completed, the aluminum water pump body 12 is started to drive the aluminum water to flow back. When the aluminum water flows into the outlet flow channel 15, the return flow channel 17 is closed to achieve the effect of filling the aluminum water into the aluminum water bag 13. At the same time, during the smelting process, the flue gas discharged from the exhaust port 30 enters the lower recovery box 35 through the air inlet 33 and the first pipe 34, and is sent to the induced draft fan 39 through the second pipe 38 after absorbing heat and cooling by the heat pipe 36 in the lower recovery box 35. A purification device can be installed at the induced draft fan 39 to purify the flue gas before discharging it into the atmosphere to reduce pollution. Normal temperature air is blown into the third pipe 41 by the blower 40 and enters the upper recovery box 37. After being heated by the heat recovered by the lower recovery box 35, it is sent to the air outlet 43 through the fourth pipe 42. The air outlet 43 can be connected to the heat accumulator 11 for reuse.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for recovering waste heat from a melting furnace, comprising a melting furnace body (1), wherein a top cover (4) is provided on the top of the melting furnace body (1), and wherein: One end of a burner (27) is symmetrically fixedly connected to one side of the smelting furnace body (1), and the other end of the burner (27) is fixedly connected to one side of the heat accumulator (11). A bracket (26) is fixedly connected to the bottom of the heat accumulator (11). An air port (28) is symmetrically fixedly connected to the outer side of the heat accumulator (11). A reversing valve (29) is provided on one side of the heat accumulator (11). The reversing valve (29) is fixedly connected to the part of the burner (27) located in the heat accumulator (11). An exhaust port (30) is opened on the outer side of the smelting furnace body (1), and the exhaust port (30) is provided with a waste heat recovery device.

2. The device for recovering waste heat from a melting furnace according to claim 1, characterized in that: The waste heat recovery device comprises an air inlet (33), one end of the air inlet (33) is fixedly connected to a first pipe (34), one end of the first pipe (34) is fixedly connected to a lower recovery box (35), a heat pipe (36) is arranged in the lower recovery box (35), one side of the lower recovery box (35) is fixedly connected to a second pipe (38), and one end of the second pipe (38) is fixedly connected to an induced draft fan (39).

3. The device for recovering waste heat from a melting furnace according to claim 2, characterized in that: The top of the lower recovery box (35) is fixedly connected to an upper recovery box (37), and the upper recovery box (37) is provided with a same heat pipe (36). One side of the upper recovery box (37) is fixedly connected to a third pipe (41), and one end of the third pipe (41) is fixedly connected to a blower (40). The other side of the upper recovery box (37) is fixedly connected to a fourth pipe (42), and one end of the fourth pipe (42) is fixedly connected to an air outlet (43).

4. The device for recovering waste heat from a melting furnace according to claim 1, characterized in that: An aluminum ladle (13) is provided on one side of the exterior of the smelting furnace body (1), a canned launder (14) is fixedly connected to the exterior of the aluminum ladle (13), an aluminum water pool (25) is fixedly connected to one end of the canned launder (14), an outlet launder (15) is provided on one side of the interior of the aluminum water pool (25), a water inlet (16) is provided on the interior of the aluminum water pool (25), a return launder (17) is provided on the other side of the interior of the aluminum water pool (25), one end of a delivery pipe (31) is fixedly connected to the return launder (17), the other end of the delivery pipe (31) is fixedly connected to the smelting furnace body (1), and an aluminum water pump body (12) is fixedly connected to the exterior of the aluminum water pool (25).

5. The device for recovering waste heat from a melting furnace according to claim 1, characterized in that: A furnace door (24) is provided inside one end of the smelting furnace body (1), one end of a chain (5) is symmetrically fixedly connected to the outer side of the top of the furnace door (24), the other end of the chain (5) is fixedly connected to a roller (6), the inside of the roller (6) is fixedly connected to a motor (8), the outside of the motor (8) is fixedly connected to the top of the fixed plate (3), the output end of the motor (8) is fixedly connected to a rotating rod (7), both ends of the outside of the rotating rod (7) are fixedly connected to the inside of the roller (6), both ends of the bottom of the fixed plate (3) are fixedly connected to a fixed rod (2), one end of the fixed rod (2) is fixedly connected to the outside of the smelting furnace body (1), a smelting chamber (10) is provided inside the smelting furnace body (1), one end of the chain (5) passes through the fixed plate (3) and is fixedly connected to the outside of the roller (6).

6. The device for recovering waste heat from a melting furnace according to claim 1, characterized in that: The inner wall of the smelting furnace body (1) is provided with a first insulation brick (20), the outside of the first insulation brick (20) is provided with a second clay brick (19), and the bottom end of the smelting furnace body (1) is provided with a first clay brick (18).

7. The device for recovering waste heat from a melting furnace according to claim 6, characterized in that: A first high-aluminum brick (21) is arranged outside the first insulation brick (20), a second insulation brick (23) is arranged at the bottom of the inner wall of the smelting furnace body (1), and a second high-aluminum brick (22) is arranged outside the second insulation brick (23).

8. The device for recovering waste heat from a melting furnace according to claim 3, characterized in that: A plurality of furnace temperature measuring ports (9) are provided inside the smelting furnace body (1), and a thermometer (32) is provided inside each of the furnace temperature measuring ports (9).

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