Waste heat recovery device for industrial electric furnace

Abstract

The utility model relates to the field of waste heat recovery of industrial furnaces, and discloses a waste heat recovery device for an industrial electric furnace, which comprises an electric furnace body, a collecting box arranged at the right part of the electric furnace body, a storage tank arranged at the right part of the collecting box, an adding pipe fixedly connected to the top side of the storage tank, and a drain pipe fixedly connected to the periphery of the storage tank. A control valve is arranged on the periphery of the drainage pipe, a smoke conveying pipe is fixedly connected to the rear side of the collecting box, the right end of the smoke conveying pipe is fixedly connected to the left side of the collecting box, a smoke exhaust pipe is fixedly connected to the right side of the collecting box, and a liquid conveying pump is fixedly connected to the right side of the top of the collecting box. According to the device, the filter plate can filter impurities in smoke, the impurities are prevented from being attached to the surface of the liquid conveying pipe to affect the heat exchange efficiency of cooling liquid in the liquid conveying pipe, and the cooling fins can transmit heat to water flow in the storage tank, so that rapid cooling of the cooling liquid is achieved, and the heat recovery efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of waste heat recovery of industrial furnaces, in particular to a waste heat recovery device for industrial electric furnaces. Background Art

[0002] The metallurgical industry refers to the process and technology field of extracting metals and their alloys from ores using chemical and physical methods. It covers the entire process from raw material collection to final product processing. Industrial electric furnaces are widely used in the metallurgical industry for metal smelting, alloy preparation and casting processes. These furnaces are able to provide high temperatures and precise temperature control, ensuring uniform heating of metal materials and accurate alloy composition.

[0003] An industrial electric furnace is a device specifically designed to heat and melt metals, glass, ceramics, and other materials. Industrial electric furnaces work by means of resistance heating. The furnace contains resistance heating elements, which generate heat when current passes through them. These elements are placed in the furnace or heating chamber of the furnace to transfer heat directly to the material to be processed or melted. Modern metallurgical processes not only focus on improving metal extraction rates and product quality, but also on reducing environmental impacts, such as reducing energy consumption. Waste heat recovery technology for industrial electric furnaces is an important means to promote industrial energy efficiency and environmental protection and emission reduction.

[0004] During use, the waste heat recovery device needs to input high-temperature flue gas into the heat exchanger for heat exchange to achieve waste heat recovery. However, the existing waste heat recovery device lacks a filtering structure for the flue gas. The flue gas contains a large amount of solid particles. When the solid particles adhere to the surface of the heat exchange pipe, the heat exchange efficiency will be reduced. Therefore, a waste heat recovery device for industrial electric furnaces is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a waste heat recovery device for an industrial electric furnace, aiming to improve the problem in the prior art that solid particles adhere to the surface of the heat exchange pipe and reduce the efficiency of heat exchange.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The waste heat recovery device for an industrial electric furnace comprises an electric furnace body, a collecting box is arranged on the right part of the electric furnace body, a storage tank is arranged on the right part of the collecting box, an adding pipe is fixedly connected to the top side of the storage tank, a drainage pipe is fixedly connected to the periphery of the storage tank, a control valve is arranged on the periphery of the drainage pipe, a smoke conveying pipe is fixedly connected to the rear side of the collecting box, the right end of the smoke conveying pipe is fixedly connected to the left side of the collecting box, a smoke exhaust pipe is fixedly connected to the right side of the collecting box, an infusion pump is fixedly connected to the right side of the top of the collecting box, an infusion pipe is fixedly connected to the inside of the collecting box, and the middle of the infusion pipe is fixedly connected to On the inner side of the storage tank, a plurality of evenly distributed heat-conducting components are arranged in the middle of the infusion tube, and the heat-conducting components are used to guide the movement of heat. The two ends of the infusion tube are respectively fixedly connected to the input end and the output end of the infusion pump, and a filter plate is fixedly connected inside the collection box, and an electric push rod is fixedly connected to the top side of the collection box, and a brush plate 2 is fixedly connected to the telescopic end of the electric push rod, and brush plate 1 is slidably connected inside the front and rear sides of brush plate 2, and the rear sides of brush plate 2 and brush plate 1 are slidably connected to the front side of the filter plate, and two guide blocks are fixedly connected to the bottom of the left side of the filter plate.

[0008] Through the above technical solution, the filter plate can prevent impurities in the smoke from adhering to the surface of the infusion tube.

[0009] As a further description of the above technical solution:

[0010] The multiple heat-conducting components all include a heat-conducting sleeve, which is fixedly connected to the outer periphery of the infusion tube, and the outer periphery of the heat-conducting sleeve is fixedly connected to multiple evenly distributed heat-conducting shafts, one end of the adjacent multiple heat-conducting shafts is fixedly connected to a heat sink, and one side of the heat sink is fixedly connected to multiple evenly distributed heat sinks.

[0011] Through the above technical solution, the heat-conducting sleeve and the heat-conducting shaft can guide the heat of the coolant to flow toward the water flow inside the storage tank.

[0012] As a further description of the above technical solution:

[0013] One side of the brush plate 1 is fixedly connected to a limiting block, the limiting block is slidably connected to the inner side of the brush plate 2, the interior of the brush plate 2 is fixedly connected to a spring 1, and one end of the spring 1 is fixedly connected to one side of the limiting block.

[0014] Through the above technical solution, spring one can push brush plate one to move.

[0015] As a further description of the above technical solution:

[0016] A storage box is slidably connected to the bottom of the collection box, a support shaft is fixedly connected to the inside of the storage box, a baffle is rotatably connected to the outer periphery of the support shaft, two installation shafts are fixedly connected to the inside of the storage box, a spring 2 is sleeved on the outer periphery of the installation shaft, and the upper and lower ends of the spring 2 respectively abut against the bottom side of the baffle and the inner side of the storage box.

[0017] Through the above technical solution, the storage box can collect impurities on the surface of the filter plate.

[0018] As a further description of the above technical solution:

[0019] The second bottom side of the brush plate is fixedly connected with a fixed shaft, and the fixed shaft is arranged on the top of the baffle.

[0020] Through the above technical solution, the fixed shaft can drive the baffle to rotate

[0021] As a further description of the above technical solution:

[0022] A plurality of evenly distributed through holes are provided inside the heat sink.

[0023] Through the above technical solution, the opening of the perforations can increase the surface area of ​​the heat sink and thus enhance the heat dissipation effect of the heat sink.

[0024] As a further description of the above technical solution:

[0025] A plurality of evenly distributed fixing strips are fixedly connected to the inner side of the heat-conducting sleeve, and the fixing strips abut against the surface of the infusion tube;

[0026] As a further description of the above technical solution:

[0027] The storage tank is fixedly connected with heat-insulating cotton inside.

[0028] Through the above technical solution, the thermal insulation cotton insulates the water flow inside the storage tank.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, after the flue gas inside the electric furnace body enters the collecting box through the smoke delivery pipe, the filter plate can filter the impurities in the flue gas to prevent the impurities from adhering to the surface of the delivery pipe and affecting the heat exchange efficiency of the coolant inside the delivery pipe. When the filter plate needs to be cleaned, the electric push rod can be started, and the telescopic end of the electric push rod can be extended to drive the two brush plates 1 and 2 to move, so as to clean the impurities on the surface of the filter plate.

[0031] 2. In the utility model, multiple heat-conducting sleeves installed on the surface of the infusion tube can absorb the heat of the coolant inside the infusion tube and transfer the heat to multiple heat sinks through multiple heat-conducting shafts. Multiple heat sinks on one side of the heat sink can transfer the heat to the water flow inside the storage tank, thereby achieving rapid cooling of the coolant and improving the heat recovery efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a three-dimensional schematic diagram of the waste heat recovery device for industrial electric furnaces proposed by the utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the collection box of the waste heat recovery device for industrial electric furnaces proposed by the utility model;

[0034] Figure 3 This is a structural schematic diagram of the brush plate 2 of the waste heat recovery device for an industrial electric furnace proposed by the utility model;

[0035] Figure 4 for Figure 2 A in the enlarged view;

[0036] Figure 5 This is a schematic diagram of the structure of the storage tank of the waste heat recovery device for industrial electric furnaces proposed by the utility model;

[0037] Figure 6 This is a schematic structural diagram of a heat-conducting sleeve of a waste heat recovery device for an industrial electric furnace proposed by the utility model.

[0038] Legend:

[0039] 1. Electric furnace body; 2. Smoke conveying pipe; 3. Electric push rod; 4. Infusion pump; 5. Infusion pipe; 6. Storage tank; 7. Collection box; 8. Brush plate one; 9. Fixed shaft; 10. Guide block; 11. Storage box; 12. Brush plate two; 13. Spring one; 14. Limit block; 15. Baffle; 16. Mounting shaft; 17. Spring two; 18. Filter plate; 19. Insulation cotton; 20. Heat sink; 21. Thermal shaft; 22. Heat sink; 23. Thermal sleeve; 24. Fixed strip; 25. Support shaft; 26. Smoke exhaust pipe; 27. Adding pipe; 28. Drain pipe. DETAILED DESCRIPTION

[0040] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0041] Reference Figure 1-Figure 3 The utility model provides an embodiment: a waste heat recovery device for an industrial electric furnace, comprising an electric furnace body 1, the electric furnace body 1 is used for metal smelting, a collecting box 7 is arranged on the right side of the electric furnace body 1, the collecting box 7 is used to collect the smoke generated by the electric furnace body 1, a storage tank 6 is arranged on the right side of the collecting box 7, the storage tank 6 is used to store water flow, an adding pipe 27 is fixedly connected to the top side of the storage tank 6, water flow can be added to the storage tank 6 through the adding pipe 27, a drain pipe 28 is fixedly connected to the periphery of the storage tank 6, a control valve is arranged on the periphery of the drain pipe 28, and water flow can pass through The drain pipe 28 is used for discharge, and the control valve is used to control the switch of the drain pipe 28. The rear side of the collecting box 7 is fixedly connected with a smoke delivery pipe 2, and the right end of the smoke delivery pipe 2 is fixedly connected to the left side of the collecting box 7. The smoke can move from the electric furnace body 1 to the inside of the collecting box 7 through the smoke delivery pipe 2. The right side of the collecting box 7 is fixedly connected with a smoke exhaust pipe 26, and the cooled smoke can be discharged through the smoke exhaust pipe 26. The right side of the top of the collecting box 7 is fixedly connected with an infusion pump 4, and the infusion pump 4 is used to drive the flow of coolant. The inside of the collecting box 7 is fixedly connected with an infusion pipe 5, and the middle part of the infusion pipe 5 is fixedly connected to the storage tank 6 Inside, both ends of the infusion tube 5 are fixedly connected to the input end and the output end of the infusion pump 4 respectively, and the infusion tube 5 plays the role of transporting the coolant. The collection box 7 is fixedly connected with a filter plate 18, and the filter plate 18 can filter impurities in the flue gas. The top side of the collection box 7 is fixedly connected with an electric push rod 3, and the telescopic end of the electric push rod 3 can drive the brush plate 2 12 and the brush plate 1 8 to move. The telescopic end of the electric push rod 3 is fixedly connected with the brush plate 2 12, and the front and rear sides of the brush plate 2 12 are both slidably connected with the brush plate 1 8. One side of the brush plate 1 8 is fixedly connected with a limit block 14, and the limit block 1 4 is slidably connected to the inner side of the brush plate 2 12, and the installation of the limit block 14 can prevent the brush plate 1 8 from falling off from the inside of the brush plate 2 12. The inside of the brush plate 2 12 is fixedly connected with a spring 13, and one end of the spring 13 is fixedly connected to one side of the limit block 14. The spring 13 can push the brush plate 18 to move. The rear sides of the brush plate 2 12 and the brush plate 18 are slidably connected to the front side of the filter plate 18. The brush plate 2 12 and the brush plate 18 can clean the impurities accumulated on the front side of the filter plate 18. Two guide blocks 10 are fixedly connected to the bottom of the left side of the filter plate 18, and the guide blocks 10 are used to guide the movement of impurities.

[0042] Reference Figure 5 , Figure 6A plurality of evenly distributed heat-conducting components are arranged in the middle of the infusion tube 5, and the heat-conducting components are used to guide the movement of heat. The heat-conducting components all include a heat-conducting sleeve 23, and the heat-conducting sleeve 23 is fixedly connected to the outer periphery of the infusion tube 5. The heat-conducting sleeve 23 can guide the heat flow in the coolant inside the infusion tube 5. A plurality of evenly distributed fixing strips 24 are fixedly connected to the inner side of the heat-conducting sleeve 23, and the fixing strips 24 abut against the surface of the infusion tube 5. The fixing strips 24 increase the contact area between the heat-conducting sleeve 23 and the infusion tube 5, and enhance the heat conduction efficiency of the heat-conducting sleeve 23. The outer periphery of the heat-conducting sleeve 23 is fixedly connected to the heat-conducting sleeve 23. A plurality of evenly distributed heat-conducting shafts 21 are connected, and the heat-conducting shafts 21 can guide heat to the heat sink 20. One end of the adjacent plurality of heat-conducting shafts 21 is fixedly connected to the heat sink 20, and one side of the heat sink 20 is fixedly connected to a plurality of evenly distributed heat sinks 22. The heat sink 20 and the heat sink 22 can dissipate heat into the water flow. A plurality of evenly distributed through holes are provided inside the heat sink 22. The through holes increase the surface area of ​​the heat sink 22 and improve the heat dissipation efficiency of the heat sink 22. A thermal insulation cotton 19 is fixedly connected inside the storage tank 6, and the thermal insulation cotton 19 can keep the water flow warm.

[0043] Reference Figure 2 , Figure 4 A storage box 11 is slidably connected to the bottom side of the collection box 7. The storage box 11 is used to store impurities. A support shaft 25 is fixedly connected to the storage box 11. The support shaft 25 can support the baffle 15 to rotate. The baffle 15 is rotatably connected to the outer periphery of the support shaft 25. The baffle 15 is used to seal the storage box 11. Two mounting shafts 16 are fixedly connected to the storage box 11. The mounting shaft 16 is used to install a second spring 17. A second spring 17 is sleeved on the outer periphery of the mounting shaft 16. The upper and lower ends of the second spring 17 are respectively abutted against the bottom side of the baffle 15 and the inner side of the storage box 11. The second spring 17 can push the baffle 15 to seal the storage box 11. A fixed shaft 9 is fixedly connected to the bottom side of the brush plate 12. The fixed shaft 9 is arranged on the top of the baffle 15. The fixed shaft 9 can push the baffle 15 to be recovered into the storage box 11.

[0044] Working principle: When the electric furnace body 1 is in use, the smoke inside the electric furnace body 1 can enter the collection box 7 through the smoke pipe 2. The filter plate 18 inside the collection box 7 can filter the impurities in the smoke to prevent the impurities from adhering to the surface of the infusion tube 5 and affecting the normal use of the infusion tube 5. After the smoke enters the collection box 7, the infusion pump 4 can be started, and the infusion pump 4 drives the coolant to flow inside the infusion tube 5. After the coolant enters the collection box 7, the coolant can absorb the heat in the smoke and transport the heat into the storage tank 6. Water flow is added to the storage tank 6 through the adding pipe 27. After the coolant enters the storage tank 6, multiple heat-conducting sleeves 23 and multiple heat-conducting shafts 21 can guide the heat to move to the heat sink 20. The heat sink 20 and multiple heat sinks 22 can dissipate the heat. After the water flow inside the storage tank 6 absorbs the heat, the temperature rises and it can be used after being discharged through the drain pipe 28. When the filter plate 18 needs to be cleaned, the electric push rod 3 can be started, and the telescopic end of the electric push rod 3 drives the brush plate 1 8 and the brush plate 2 12 to move on the surface of the filter plate 18 to clean the impurities accumulated on the surface of the filter plate 18. The telescopic end of the electric push rod 3 is extended to make the brush plate 1 8 and the brush plate 2 12 drive the impurities to move toward the storage box 11, and the brush plate 2 12 drives the fixed shaft 9 to move so that the fixed shaft 9 pushes the baffle 15 to rotate and open the storage box 11, and then the brush plate 1 8 and the brush plate 2 12 can push the dust into the storage box 11 along the two guide blocks 10 for collection.

[0045] 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 waste heat recovery device for an industrial electric furnace, comprising an electric furnace body (1), characterized in that: A collecting box (7) is arranged on the right side of the electric furnace body (1), a storage tank (6) is arranged on the right side of the collecting box (7), an adding pipe (27) is fixedly connected to the top side of the storage tank (6), a drainage pipe (28) is fixedly connected to the outer periphery of the storage tank (6), a control valve is arranged on the outer periphery of the drainage pipe (28), a smoke conveying pipe (2) is fixedly connected to the rear side of the collecting box (7), the right end of the smoke conveying pipe (2) is fixedly connected to the left side of the collecting box (7), a smoke exhaust pipe (26) is fixedly connected to the right side of the collecting box (7), an infusion pump (4) is fixedly connected to the right side of the top of the collecting box (7), an infusion pipe (5) is fixedly connected to the inner side of the collecting box (7), and the middle part of the infusion pipe (5) is fixedly connected to the storage tank. (6) inside, a plurality of evenly distributed heat-conducting components are arranged in the middle of the infusion tube (5), and the heat-conducting components are used to guide the movement of heat. The two ends of the infusion tube (5) are respectively fixedly connected to the input end and the output end of the infusion pump (4). A filter plate (18) is fixedly connected inside the collection box (7). An electric push rod (3) is fixedly connected to the top side of the collection box (7). A brush plate 2 (12) is fixedly connected to the telescopic end of the electric push rod (3). The front and rear sides of the brush plate 2 (12) are both slidably connected to the brush plate 1 (8). The rear sides of the brush plate 2 (12) and the brush plate 1 (8) are slidably connected to the front side of the filter plate (18). Two guide blocks (10) are fixedly connected to the bottom of the left side of the filter plate (18).

2. The waste heat recovery device for an industrial electric furnace according to claim 1, characterized in that: The plurality of heat-conducting components all comprise a heat-conducting sleeve (23), the heat-conducting sleeve (23) being fixedly connected to the outer periphery of the infusion tube (5), the outer periphery of the heat-conducting sleeve (23) being fixedly connected to a plurality of evenly distributed heat-conducting shafts (21), one end of a plurality of adjacent heat-conducting shafts (21) being fixedly connected to a heat sink (20), and one side of the heat sink (20) being fixedly connected to a plurality of evenly distributed heat sinks (22).

3. The waste heat recovery device for an industrial electric furnace according to claim 1, characterized in that: One side of the brush plate one (8) is fixedly connected to a limiting block (14), the limiting block (14) is slidably connected to the inner side of the brush plate two (12), the brush plate two (12) is internally fixedly connected to a spring one (13), one end of the spring one (13) is fixedly connected to one side of the limiting block (14).

4. The waste heat recovery device for an industrial electric furnace according to claim 1, characterized in that: A storage box (11) is slidably connected to the bottom of the collection box (7), a support shaft (25) is fixedly connected to the inside of the storage box (11), a baffle (15) is rotatably connected to the outer periphery of the support shaft (25), two installation shafts (16) are fixedly connected to the inside of the storage box (11), a spring (17) is sleeved on the outer periphery of the installation shaft (16), and the upper and lower ends of the spring (17) are respectively abutted against the bottom side of the baffle (15) and the inner side of the storage box (11).

5. The waste heat recovery device for industrial electric furnace according to claim 4, characterized in that: A fixed shaft (9) is fixedly connected to the bottom side of the second brush plate (12), and the fixed shaft (9) is arranged on the top of the baffle (15).

6. The waste heat recovery device for an industrial electric furnace according to claim 2, characterized in that: The heat sink (22) is provided with a plurality of evenly distributed through holes.

7. The waste heat recovery device for an industrial electric furnace according to claim 2, characterized in that: A plurality of evenly distributed fixing strips (24) are fixedly connected to the inner side of the heat-conducting sleeve (23), and the fixing strips (24) abut against the surface of the infusion tube (5).

8. The waste heat recovery device for an industrial electric furnace according to claim 1, characterized in that: The storage tank (6) is internally fixedly connected with thermal insulation cotton (19).

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