Low resistance fume extraction flow guide for aluminum smelters

Abstract

This application provides a low-resistance flue gas guiding device for aluminum melting furnaces, relating to the field of aluminum melting furnace technology. It includes a flue gas guiding heat recovery component. Through this component, the required raw materials are placed inside the feeding frame, and a sealing baffle seals the feeding frame to prevent flue gas leakage during the feeding process. The guiding connection pipe has a branched design, allowing for the transmission of flue gas generated by the feeding frame and the main body of the aluminum melting furnace, preventing flue gas from remaining inside the feeding frame. An air filter element filters larger impurities in the flue gas, preventing damage to the fan. After the fan starts, it guides the flue gas through the flue gas transmission pipe into the interior of the heat-conducting coil. The heat-conducting coil has a serpentine design, effectively increasing the contact area between the high-temperature flue gas and the water flow inside the water-heating circulation box, allowing the water flow inside the circulation box to be heated.

Description

Technical Field

[0001] This utility model relates to the field of aluminum furnace technology, and in particular to a low-resistance flue gas guiding device for aluminum furnaces. Background Technology

[0002] In the aluminum smelting industry, aluminum furnaces generate large amounts of high-temperature, complex flue gas during operation. This flue gas contains not only pollutants such as dust and sulfur dioxide, but also carries a significant amount of heat. Traditional aluminum furnace flue gas systems suffer from numerous problems:

[0003] Ordinary flue gas ducts have a simple structure and lack effective flow guidance for flue gas. Flue gas easily forms turbulence within the duct, leading to increased local resistance and affecting exhaust efficiency. In some furnaces using straight-cylinder flue gas ducts, large eddies form at bends, hindering the smooth discharge of subsequent flue gas, increasing internal furnace pressure, and consequently affecting smelting speed and quality. Direct discharge of high-temperature flue gas results in significant heat energy waste. In traditional flue gas systems, most heat is lost with the flue gas and not fully utilized. Therefore, we propose a low-resistance flue gas guiding device for aluminum furnaces. Utility Model Content

[0004] In view of this, this application provides a low-resistance flue gas guiding device for aluminum furnaces, aiming to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-resistance flue gas guiding device for an aluminum furnace includes a fixed plate. From left to right, an aluminum furnace body, a water heating circulation box, and a filter box are fixedly installed on the top of the fixed plate. A feeding frame is fixedly installed on the front side of the aluminum furnace body. A sealing baffle is bolted to the top of the feeding frame. Flue gas guiding heat reuse components are provided on the aluminum furnace body, the feeding frame, the water heating circulation box, and the filter box.

[0007] The flue gas heat recovery assembly includes a flow guiding pipe, flow guiding blades, an exhaust box, a mounting frame, and a fan. One end of the flow guiding pipe is fixedly installed on the right side of the aluminum furnace body and the feeding frame, respectively. The flow guiding blades are fixedly installed on the inner side of the flow guiding pipe. The exhaust box is fixedly installed on the other end of the flow guiding pipe. The mounting frame is fixedly installed on the inner side of the exhaust box. The fan is fixedly installed on one side of the mounting frame.

[0008] As a further improvement to the above solution, a first water inlet pipe is fixedly installed on the front side of the water flow heating circulation box, a water outlet pipe is fixedly installed on the rear side of the water flow heating circulation box, and a flue gas guiding filtration and cleaning component is provided on the filter box.

[0009] As a further improvement to the above solution, the flue gas heat recovery assembly also includes an exhaust duct, an air filter element, and a mounting plate. The exhaust duct is fixedly installed on the top of the filter box, the air filter element is slidably disposed inside the exhaust duct and the exhaust box, and the mounting plate is fixedly installed on one side of the air filter element. The mounting plate is bolted to the exhaust box and the exhaust duct.

[0010] As a further improvement to the above solution, the flue gas heat recovery assembly also includes a flue gas transmission pipe and a heat-conducting coil. One end of the flue gas transmission pipe is fixedly installed at the bottom of the exhaust box, and the heat-conducting coil is fixedly installed at the other end of the flue gas transmission pipe. The heat-conducting coil is fixedly installed inside the water flow heating circulation box.

[0011] As a further improvement to the above solution, the flue gas guiding and filtering cleaning assembly includes a flue gas discharge pipe, a debris collection drawer, a drain pipe, and a second water inlet pipe. The flue gas discharge pipe is fixedly installed at the output end of the heat-conducting coil and is fixedly arranged inside the filter box. The debris collection drawer is slidably installed on the front side of the filter box. The drain pipe is fixedly installed on the right side of the filter box, and the second water inlet pipe is fixedly installed on the top of the filter box.

[0012] As a further improvement to the above solution, the bottom inner wall and the left and right inner walls of the debris collection drawer are provided with filter screens, and the outer side of the debris collection drawer is provided with multiple drainage holes.

[0013] As a further improvement to the above solution, the heat-conducting coil is serpentine in shape and is made of heat-conducting steel.

[0014] As a further improvement to the above solution, the guide vane is arc-shaped and is located at the bend of the guide connecting pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The present invention provides a low-resistance flue gas guiding device for aluminum furnaces. By setting a flue gas guiding heat reuse component, the required raw materials are placed inside the feeding frame, and the sealing baffle seals the feeding frame to prevent flue gas leakage during the feeding process. The guiding connection pipe is designed with a branching structure, which can transmit the flue gas generated by the feeding frame and the aluminum furnace body, and prevent the flue gas from remaining inside the feeding frame. The air filter element can filter larger impurities in the flue gas, which can prevent impurities from damaging the fan. After the fan is started, it can guide the flue gas and let the flue gas enter the interior of the heat-conducting coil through the flue gas transmission pipe. The heat-conducting coil is designed with a serpentine shape, which can effectively increase the contact area between the high-temperature flue gas and the water flow inside the water flow heating circulation box, and allow the water flow inside the water flow heating circulation box to be heated.

[0017] (2) The present invention provides a low-resistance flue gas guiding device for aluminum furnaces. Through the flue gas guiding and filtering cleaning components, the flue gas discharge pipe can transmit the cooled flue gas to the water inside the filter box. The output end of the flue gas discharge pipe is always located inside the water, allowing the discharged flue gas to directly enter the water. The water source can adsorb and treat the fine particles in the flue gas. The device can periodically control the drainage pipe to discharge water. Particles and debris can be stored on the filter screen above the debris collection drawer. Personnel only need to remove the debris collection drawer for cleaning. After cleaning, the debris collection drawer is reinstalled and the water flow is adjusted to the inside of the filter box through the second water inlet pipe, making the purification of flue gas by the device more convenient and faster.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a low-resistance flue gas guiding device for an aluminum melting furnace proposed in this utility model.

[0020] Figure 2 This is a schematic diagram showing a three-dimensional view of a partial structure of a low-resistance flue gas guiding device for an aluminum furnace according to an embodiment of this application;

[0021] Figure 3 A schematic diagram of a three-dimensional view of the explosion section structure of a low-resistance flue gas guiding device for an aluminum furnace according to an embodiment of this application is shown.

[0022] Figure 4 This is a schematic diagram showing a three-dimensional cross-sectional view of a low-resistance flue gas guiding device for an aluminum furnace according to an embodiment of this application.

[0023] Figure label:

[0024] 1. Flue gas guiding and heat recovery assembly; 2. Flue gas guiding and filtration cleaning assembly; 3. Fixing plate; 4. Aluminum furnace body; 5. Feeding frame; 6. Sealing baffle; 7. Water flow heating and circulation box; 8. Filter box; 9. First water inlet pipe; 10. Water outlet pipe;

[0025] 11. Guide pipe; 12. Guide vane; 13. Exhaust box; 14. Mounting bracket; 15. Fan; 16. Exhaust duct; 17. Air filter element; 18. Mounting plate; 19. Flue gas transmission duct; 20. Heat transfer coil;

[0026] 21. Smoke exhaust pipe; 22. Miscellaneous items collection drawer; 23. Drainage pipe; 24. Second water inlet pipe. Detailed Implementation

[0027] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings;

[0028] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] refer to Figure 1-4 A low-resistance flue gas guiding device for an aluminum furnace includes a fixed plate 3. The top of the fixed plate 3 is fixedly mounted from left to right with an aluminum furnace body 4, a water heating circulation box 7, and a filter box 8. A feeding frame 5 is fixedly mounted on the front side of the aluminum furnace body 4. A sealing baffle 6 is bolted to the top of the feeding frame 5. A flue gas guiding heat reuse component 1 is provided on the aluminum furnace body 4, the feeding frame 5, the water heating circulation box 7, and the filter box 8.

[0030] The flue gas heat recovery assembly 1 includes a flow guiding pipe 11, a flow guiding blade 12, an exhaust box 13, a fixing frame 14, and a fan 15. One end of the flow guiding pipe 11 is fixedly installed on the right side of the aluminum furnace body 4 and the feeding frame 5, respectively. The flow guiding blade 12 is fixedly installed on the inner side of the flow guiding pipe 11. The exhaust box 13 is fixedly installed on the other end of the flow guiding pipe 11. The fixing frame 14 is fixedly installed on the inner side of the exhaust box 13. The fan 15 is fixedly installed on one side of the fixing frame 14.

[0031] In this embodiment, a first water inlet pipe 9 is fixedly installed on the front side of the water flow heating circulation box 7, a water outlet pipe 10 is fixedly installed on the rear side of the water flow heating circulation box 7, and a flue gas guiding filter cleaning component 2 is provided on the filter box 8.

[0032] In this embodiment, the flue gas heat recovery assembly 1 further includes an exhaust duct 16, an air filter element 17, and a mounting plate 18. The exhaust duct 16 is fixedly installed on the top of the filter box 8. The air filter element 17 is slidably disposed inside the exhaust duct 16 and the exhaust box 13. The mounting plate 18 is fixedly installed on one side of the air filter element 17. The mounting plate 18 is installed on the exhaust box 13 and the exhaust duct 16 by bolts.

[0033] In this embodiment, the flue gas heat recovery assembly 1 further includes a flue gas transmission pipe 19 and a heat conduction coil 20. One end of the flue gas transmission pipe 19 is fixedly installed at the bottom of the exhaust box 13, and the heat conduction coil 20 is fixedly installed at the other end of the flue gas transmission pipe 19. The heat conduction coil 20 is fixedly installed inside the water flow heating circulation box 7.

[0034] In this embodiment, the flue gas guiding and filtering cleaning assembly 2 includes a flue gas discharge pipe 21, a debris collection drawer 22, a drain pipe 23, and a second water inlet pipe 24. The flue gas discharge pipe 21 is fixedly installed at the output end of the heat conduction coil 20 and is fixedly installed inside the filter box 8. The debris collection drawer 22 is slidably installed on the front side of the filter box 8. The drain pipe 23 is fixedly installed on the right side of the filter box 8, and the second water inlet pipe 24 is fixedly installed on the top of the filter box 8. The drain pipe 23 can discharge sewage. The drain hole above the debris collection drawer 22 prevents water from remaining inside the debris collection drawer 22. After cleaning the debris collection drawer 22, it can be slid back in. Clean water can be regulated to the inside of the filter box 8 through the second water inlet pipe 24, and the water flow can submerge the exhaust end of the flue gas discharge pipe 21.

[0035] In this embodiment, the bottom inner wall and the left and right inner walls of the debris collection drawer 22 are equipped with filter screens, and multiple drainage holes are opened on the outside of the debris collection drawer 22. The output end of the flue gas exhaust pipe 21 is always located inside the water body, allowing the exhaust gas to directly enter the water body. The water source can adsorb and treat the fine particles in the flue gas. The device can periodically control the drainage pipe 23 to discharge water. The particulate debris can be stored on the filter screen above the debris collection drawer 22. Personnel only need to remove the debris collection drawer 22 for cleaning. After cleaning, the debris collection drawer 22 is reinstalled and the water flow is adjusted to the inside of the filter box 8 through the second water inlet pipe 24, making the purification of flue gas by this device convenient and quick.

[0036] In this embodiment, the heat-conducting coil 20 is serpentine in shape and made of heat-conducting steel. The serpentine design of the heat-conducting coil 20 can effectively increase the contact area between the high-temperature flue gas and the water flow inside the water heating circulation box 7, allowing the water flow inside the water heating circulation box 7 to be heated. The water heating circulation box 7 is equipped with a first water inlet pipe 9 and a water outlet pipe 10, which can continuously heat and discharge cold water, making the device have a high thermal utilization rate and thus avoiding waste.

[0037] In this embodiment, the guide vane 12 is arc-shaped and is located at the bend of the guide connecting pipe 11. The guide connecting pipe 11 is bifurcated and can transmit the flue gas generated by the feeding frame 5 and the aluminum furnace body 4, preventing the flue gas from remaining inside the feeding frame 5. The guide vane 12 is located at the bend of the aluminum furnace body 4, which can guide the flue gas to form an orderly laminar flow in the guide connecting pipe 11, reducing the generation of turbulence and eddies.

[0038] The specific operation involves placing the required raw materials inside the feeding frame 5 and sealing the feeding frame 5 with the sealing baffle 6 to prevent gas leakage during the feeding process. The guide pipe 11 is a branched design, allowing for the transfer of gas generated by the feeding frame 5 and the aluminum furnace body 4, preventing gas from remaining inside the feeding frame 5. Guide vanes 12 are installed at the bends of the aluminum furnace body 4 to guide the gas into an orderly laminar flow within the guide pipe 11, reducing turbulence and eddies. The air filter element 17 filters larger impurities in the gas, preventing damage to the fan 15. After the fan 15 starts, it guides the gas flow, allowing it to enter the heat-conducting coil 20 through the gas transfer pipe 19. The heat-conducting coil 20 has a serpentine design, effectively increasing the contact area between the high-temperature gas and the water flow inside the water heating circulation box 7, allowing for water heating circulation. The water inside the tank 7 is heated, and the water circulation tank 7 is equipped with a first inlet pipe 9 and an outlet pipe 10, which can continuously heat and discharge cold water, making the device highly efficient in terms of heat utilization and preventing waste. The flue gas discharge pipe 21 can transmit the cooled flue gas to the water inside the filter box 8. The output end of the flue gas discharge pipe 21 is always located inside the water, allowing the discharged flue gas to directly enter the water. The water source can adsorb and treat the fine particles in the flue gas. The device can periodically control the drainage pipe 23 to discharge water. Particulate matter can be stored on the filter screen above the debris collection drawer 22. Personnel only need to remove the debris collection drawer 22 for cleaning. After cleaning, the debris collection drawer 22 is reinstalled, and the water flow is adjusted to the inside of the filter box 8 through the second inlet pipe 24, making the purification of flue gas by the device convenient and quick.

[0039] It should be noted that although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-resistance flue gas guiding device for aluminum smelting furnaces, characterized in that, include: A fixed plate (3) is provided, and an aluminum furnace body (4), a water heating circulation box (7) and a filter box (8) are fixedly installed on the top of the fixed plate (3) from left to right. A feeding frame (5) is fixedly installed on the front side of the aluminum furnace body (4). A sealing baffle (6) is installed on the top of the feeding frame (5) by bolts. A flue gas guiding heat reuse component (1) is provided on the aluminum furnace body (4), the feeding frame (5), the water heating circulation box (7) and the filter box (8). The flue gas heat recovery assembly (1) includes a flow guiding pipe (11), a flow guiding blade (12), an exhaust box (13), a fixing frame (14), and a fan (15). One end of the flow guiding pipe (11) is fixedly installed on the right side of the aluminum furnace body (4) and the feeding frame (5). The flow guiding blade (12) is fixedly installed on the inner side of the flow guiding pipe (11). The exhaust box (13) is fixedly installed on the other end of the flow guiding pipe (11). The fixing frame (14) is fixedly installed on the inner side of the exhaust box (13). The fan (15) is fixedly installed on one side of the fixing frame (14).

2. The low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 1, characterized in that, The front side of the water flow heating circulation box (7) is fixedly installed with a first water inlet pipe (9), the rear side of the water flow heating circulation box (7) is fixedly installed with a water outlet pipe (10), and the filter box (8) is provided with a flue gas guiding filter cleaning component (2).

3. The low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 1, characterized in that, The flue gas heat recovery assembly (1) further includes an exhaust duct (16), an air filter element (17), and a mounting plate (18). The exhaust duct (16) is fixedly installed on the top of the filter box (8). The air filter element (17) is slidably disposed inside the exhaust duct (16) and the exhaust box (13). The mounting plate (18) is fixedly installed on one side of the air filter element (17). The mounting plate (18) is bolted to the exhaust box (13) and the exhaust duct (16).

4. A low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 2, characterized in that, The flue gas heat recovery assembly (1) further includes a flue gas transmission pipe (19) and a heat-conducting coil (20). One end of the flue gas transmission pipe (19) is fixedly installed at the bottom of the exhaust box (13), and the heat-conducting coil (20) is fixedly installed at the other end of the flue gas transmission pipe (19). The heat-conducting coil (20) is fixedly installed inside the water flow heating circulation box (7).

5. A low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 4, characterized in that, The flue gas guiding and filtering cleaning assembly (2) includes a flue gas discharge pipe (21), a debris collection drawer (22), a drain pipe (23), and a second water inlet pipe (24). The flue gas discharge pipe (21) is fixedly installed at the output end of the heat conduction coil (20) and is fixedly installed inside the filter box (8). The debris collection drawer (22) is slidably installed on the front side of the filter box (8). The drain pipe (23) is fixedly installed on the right side of the filter box (8), and the second water inlet pipe (24) is fixedly installed on the top of the filter box (8).

6. A low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 5, characterized in that, The bottom inner wall and the left and right inner walls of the debris collection drawer (22) are provided with filter screens, and multiple drainage holes are provided on the outside of the debris collection drawer (22).

7. A low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 4, characterized in that, The heat-conducting coil (20) is serpentine in shape and is made of heat-conducting steel.

8. A low-resistance flue gas guiding device for an aluminum smelting furnace according to claim 1, characterized in that, The guide vane (12) is arc-shaped and is located at the bend of the guide connecting pipe (11).

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