Heat preservation furnace waste heat utilization device

Abstract

The utility model discloses a heat preservation furnace waste heat utilization device, which relates to the technical field of heat preservation furnace waste heat utilization and comprises a heat preservation furnace and an air compressor, the heat preservation furnace is arranged in an outer casing, an inner cavity with a certain space is formed between the heat preservation furnace and the outer casing, an air inlet is arranged at the upper end of one side of the outer casing, and an air outlet is arranged at the lower end of the other side of the outer casing. A fan is arranged between the heat preservation furnace and the air compressor, the input end of the fan is connected with the air outlet through a waste heat pipeline, the output end of the fan is connected with the input end of the air compressor through a waste heat pipeline, the heat preservation furnace is arranged in the outer casing, an inner cavity with a certain space is formed between the heat preservation furnace and the outer casing, and the fan is arranged on one side of the heat preservation furnace of the die casting machine. The fan extracts heat in the inner cavity and provides the heat to the air compressor for use, and due to the fact that negative pressure exists in the inner cavity, the pressure relief speed of the heat preservation furnace is increased, and meanwhile the waste heat utilization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization of insulation furnaces, in particular to a waste heat utilization device of insulation furnaces. Background Art

[0002] Holding furnaces are widely used for smelting, casting and hot-dip coating of non-ferrous metals such as aluminum, zinc, silver, lead, tin and copper. Traditional holding furnaces generate a lot of heat during use, and usually this heat is directly discharged to the outside, which greatly wastes energy.

[0003] The Chinese patent application with the authorization publication number CN212058332U discloses a heat preservation furnace waste heat utilization device, including a heat preservation furnace shell and a heat preservation furnace body, the heat preservation furnace shell cavity is fixedly provided with the heat preservation furnace body, and the heat preservation furnace body is connected to the inner wall of the heat preservation furnace shell through a bracket, a temperature sensor is fixedly provided on one side of the outer wall of the heat preservation furnace body, a controller is fixedly provided on the outer wall surface of the heat preservation furnace shell, a water pump is fixedly provided on one side of the outer wall of the heat preservation furnace shell, a spiral coil is fixedly provided on the outer wall surface of the heat preservation furnace body, a waste heat recovery machine is provided on one side of the outer wall of the heat preservation furnace shell, and the input end of the waste heat recovery machine is connected to one end of the spiral coil through a conveying pipe. Through the temperature sensor, the controller and the water pump, the spiral coil can be effectively supplied with water, and through the waste heat recovery machine, the hot water in the spiral coil can be effectively recovered for energy, and through the reflective insulation film, the heat loss can be effectively reduced and the heat utilization rate can be improved. However, the exhaust of the current heat preservation furnace is preheated by heat exchange, which makes the waste heat utilization efficiency relatively low. Utility Model Content

[0004] In order to overcome the defect of low waste heat utilization efficiency in the prior art, the utility model provides a waste heat utilization device for a heat preservation furnace.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a heat preservation furnace waste heat utilization device, including a heat preservation furnace and an air compressor, the heat preservation furnace is arranged inside an outer cover shell, an inner cavity of a certain space is formed between the heat preservation furnace and the outer cover shell, an air inlet is arranged at the upper end of one side of the outer cover shell, and an air outlet is arranged at the lower end of the other side of the outer cover shell, a fan is arranged between the heat preservation furnace and the air compressor, the input end of the fan is connected to the air outlet through a waste heat pipeline, and the output end of the fan is connected to the input end of the air compressor through the waste heat pipeline.

[0006] As a further improvement of the utility model, a dust removal net is arranged at the air inlet to reduce dust entry and prevent pollution.

[0007] As a further improvement of the utility model, a dehumidification device is arranged at the air outlet to improve the air dryness.

[0008] As a further improvement of the utility model, a heat-insulating partition is provided on the inner wall of the outer cover shell to reduce heat loss.

[0009] As a further improvement of the utility model, a heat collecting grid is provided in the inner cavity between the heat preservation furnace and the outer cover shell to reduce heat loss.

[0010] As a further improvement of the utility model, a support column is provided at the bottom of the outer cover shell to improve stability.

[0011] Compared with the prior art, the utility model has the beneficial effects: in this solution, the insulation furnace is arranged inside the outer cover shell, and an inner cavity with a certain space is formed between the insulation furnace and the outer cover shell. A fan is arranged on one side of the insulation furnace of the die-casting machine. The fan extracts heat from the inner cavity and provides it to the air compressor. Since the inner cavity is under negative pressure, the pressure relief speed of the insulation furnace is accelerated, and the utilization efficiency of waste heat is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 The utility model is a structural schematic diagram of a waste heat utilization device of a heat preservation furnace.

[0014] In the figure: 1. Insulation furnace; 2. Outer cover; 3. Fan; 4. Air compressor; 5. Waste heat pipe; 6. Air inlet; 7. Air outlet; 8. Dust removal net; 9. Dehumidification device; 10. Insulation partition; 11. Support column; 12. Heat collection grid. DETAILED DESCRIPTION

[0015] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0016] Reference Figure 1 The utility model embodiment discloses a device for utilizing waste heat from an insulation furnace, including an insulation furnace 1 and an air compressor 4. The insulation furnace 1 is arranged inside an outer cover shell 2, and an inner cavity of a certain space is formed between the insulation furnace 1 and the outer cover shell 2. An air inlet 6 is provided at the upper end of one side of the outer cover shell 2, and an air outlet 7 is provided at the lower end of the other side of the outer cover shell 2. A fan 3 is provided between the insulation furnace 1 and the air compressor 4, and an input end of the fan 3 is connected to the air outlet 7 through a waste heat pipe 5, and an output end of the fan 3 is connected to an input end of the air compressor 4 through the waste heat pipe 5.

[0017] A support column 11 is provided at the bottom of the outer cover shell 2 to improve stability.

[0018] When in use, the insulation furnace 1 is arranged inside the outer cover shell 2, and an inner cavity with a certain space is formed between the insulation furnace 1 and the outer cover shell 2. A fan 3 is arranged on one side of the insulation furnace 1 of the die-casting machine. The fan 3 extracts heat from the inner cavity and provides it to the air compressor 4. Since the inner cavity is under negative pressure, the pressure relief speed of the insulation furnace 1 is accelerated, and the utilization efficiency of waste heat is improved.

[0019] A dust removal net 8 is provided at the air inlet 6 to reduce dust entry, and a dehumidification device 9 is provided at the air outlet 7 to increase the air dryness, so that the exhaust temperature of the holding furnace 1 is higher and the water content is extremely low, which effectively improves the waste heat utilization efficiency of the holding furnace 1, saves electricity and improves the production efficiency of the die-casting machine.

[0020] The inner wall of the outer cover shell 2 is provided with a heat-insulating partition 10, and the inner cavity between the heat-insulating furnace 1 and the outer cover shell 2 is provided with a heat-collecting grid 12 to reduce heat loss and improve waste heat utilization.

[0021] It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A device for utilizing waste heat from a holding furnace, characterized in that: The invention comprises a heat preservation furnace (1) and an air compressor (4), wherein the heat preservation furnace (1) is arranged inside an outer cover shell (2), an inner cavity of a certain space is formed between the heat preservation furnace (1) and the outer cover shell (2), an air inlet (6) is arranged at the upper end of one side of the outer cover shell (2), and an air outlet (7) is arranged at the lower end of the other side of the outer cover shell (2), a fan (3) is arranged between the heat preservation furnace (1) and the air compressor (4), an input end of the fan (3) is connected to the air outlet (7) via a waste heat pipe (5), and an output end of the fan (3) is connected to the input end of the air compressor (4) via the waste heat pipe (5).

2. The device for utilizing waste heat from a holding furnace according to claim 1, characterized in that: A dust removal net (8) is arranged at the air inlet (6).

3. A device for utilizing waste heat from a holding furnace according to claim 2, characterized in that: A dehumidification device (9) is provided at the air outlet (7).

4. A device for utilizing waste heat from a holding furnace according to claim 3, characterized in that: The inner wall of the outer casing (2) is provided with a heat-insulating partition (10).

5. The device for utilizing waste heat from a holding furnace according to claim 4, characterized in that: A heat collection grid (12) is provided in the inner cavity between the heat-insulating furnace (1) and the outer cover shell (2).

6. The device for utilizing waste heat from a holding furnace according to claim 5, characterized in that: A support column (11) is provided at the bottom of the outer casing (2).

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