A spiral heat exchanger for smelting flue gas waste heat recovery

Abstract

This utility model discloses a spiral heat exchanger for waste heat recovery from smelting flue gas, including a heat exchanger body. A hot gas chamber is fixedly connected to one side of the heat exchanger body, and an end cover is fixedly connected to one end of the hot gas chamber. A high-pressure flushing assembly is rotatably connected to the surface of the end cover. Two sets of support seats are fixedly connected to the bottom of the heat exchanger body, and an installation assembly is fixedly connected to the bottom of the support seats. The high-pressure flushing assembly includes a flushing pipe rotatably connected to the surface of the end cover. A high-pressure water pan is fixedly connected to one end of the flushing pipe, and multiple diversion pipes are fixedly connected to one side of the high-pressure water pan. This spiral heat exchanger for waste heat recovery from smelting flue gas achieves periodic high-pressure jet flushing of the spiral heat exchanger through the high-pressure flushing assembly, preventing the accumulation of particulate matter and dirt in the flue gas, maintaining efficient operation of the heat exchanger, reducing maintenance costs, and extending the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of flue gas waste heat recovery technology, specifically to a spiral heat exchanger for smelting flue gas waste heat recovery. Background Technology

[0002] Smelting is the process of converting ores or waste into metals or alloys. It usually requires high-temperature operation and generates a large amount of flue gas. This flue gas contains abundant heat energy and harmful components, such as sulfur dioxide, carbon monoxide, nitrogen oxides, and particulate matter. During the smelting process, a large amount of heat energy is wasted through the flue gas. If this waste heat can be effectively recovered, energy utilization efficiency will be significantly improved and production costs will be reduced. Through waste heat recovery, the burden of flue gas treatment can be reduced, the emission of harmful gases can be reduced, and environmental improvement can be achieved. Spiral heat exchangers have attracted attention due to their unique structural design, which can provide a large heat exchange area and good heat exchange efficiency in a small space.

[0003] A heat spiral recovery system and method based on kitchen exhaust gas, disclosed in CN115325578A, includes a heat pump evaporator, a spiral heat exchanger, a water system, and a makeup air system. During the heating season, kitchen exhaust gas undergoes primary heat exchange with the heat pump evaporator and then flows into the spiral heat exchanger for secondary heat exchange. Outside of the heating season, kitchen exhaust gas flows into the spiral heat exchanger for heat exchange. During the heating season, makeup air in the makeup air system is heated by the heat pump evaporator and then sent to a makeup air duct installed in the kitchen. Outside of the heating season, makeup air in the makeup air system is directly sent to the makeup air duct. The heat spiral recovery method is based on the aforementioned heat spiral recovery system. This disclosure utilizes both the heat pump evaporator and the spiral heat exchanger for heat exchange during the heating season, and the spiral heat exchanger for heat exchange during the remaining time outside of the heating season. By using the spiral heat exchanger to recover waste heat from the exhaust gas of a commercial kitchen for makeup air heating, no external heat source is required, achieving self-circulation and utilization of energy and minimizing energy consumption.

[0004] However, the spiral heat exchanger for waste heat recovery from smelting flue gas has the following disadvantages: due to the spiral structure of the spiral heat exchanger, internal cleaning and maintenance are more difficult, requiring more specialized tools and techniques, which increases maintenance costs and manpower input. Utility Model Content

[0005] The technical problem to be solved by this utility model is as follows: to provide a spiral heat exchanger for waste heat recovery from smelting flue gas with high practicality and simple operation and structure, which solves the problem mentioned in the background art that the spiral structure of the spiral heat exchanger makes internal cleaning and maintenance difficult, requires more professional tools and techniques, and increases maintenance costs and manpower input.

[0006] The objective of this utility model can be achieved through the following technical solutions: A spiral heat exchanger for recovering waste heat from smelting flue gas includes a heat exchanger body. A hot gas chamber is fixedly connected to one side of the heat exchanger body, and an end cover is fixedly connected to one end of the hot gas chamber. A high-pressure flushing assembly is rotatably connected to the surface of the end cover. Two sets of support seats are fixedly connected to the bottom of the heat exchanger body, and an installation assembly is fixedly connected to the bottom of the support seats. The high-pressure flushing assembly includes a flushing pipe rotatably connected to the surface of the end cover. A high-pressure water pan is fixedly connected to one end of the flushing pipe. Multiple diversion pipes are fixedly connected to one side of the high-pressure water pan, and blade-type flushing heads are fixedly connected to the other end of the diversion pipes. The installation assembly includes a rack plate fixedly connected to the bottom of the support seats. Multiple sets of gears are rotatably connected to the bottom of the rack plate, and a grooved plate is fixedly connected to the bottom of the gears.

[0007] As a further embodiment of this utility model: a bearing is sleeved on the surface of the flushing pipe, a rotary water pipe joint is rotatably connected to one end of the flushing pipe, and a first transmission wheel is sleeved on the surface of one end of the flushing pipe. The rotary water pipe joint is mainly used to connect the flushing pipe and high-pressure water, allowing high-pressure water to flow in the pipe and enter the flushing pipe without being restricted by the rotation of the flushing pipe.

[0008] As a further embodiment of this utility model: a first transmission belt is rotatably connected to the surface of the first transmission wheel, and a second transmission wheel is rotatably connected to the other end of the first transmission belt. The first transmission wheel is configured to connect one end of the first transmission wheel to the rinsing pipe, and is used to drive the rotation of the rinsing pipe through mechanical drive.

[0009] As a further embodiment of this utility model: a first gearbox is fixedly connected to one side of the second transmission wheel, and a first set of motors is fixedly connected to the bottom of the first gearbox. The first set of motors serves as the power source for the entire high-pressure rinsing assembly system. It converts electrical energy into mechanical energy and drives the second transmission wheel and rinsing pipe to rotate by rotation, providing the required power to meet the working requirements.

[0010] As a further embodiment of this utility model: multiple sets of rollers are fixedly connected to both sides of the grooved plate, two sets of fixed seats are fixedly connected to the bottom of the grooved plate, a rotating shaft is rotatably connected to one side of the grooved plate, and a third transmission wheel is rotatably connected to the middle of the rotating shaft. Through the setting of the rollers, the rollers drive the rack plate to slide linearly by rotating, so that the rack plate can move back and forth smoothly, while reducing the friction between the rack plate and the grooved plate and extending the service life of the component.

[0011] As a further embodiment of this utility model: a second transmission belt is rotatably connected to the surface of the third transmission wheel, and a fourth transmission wheel is rotatably connected to the other end of the second transmission belt. A second gearbox is fixedly connected to one side of the fourth transmission wheel, and a second set of motors is fixedly connected to one side of the second gearbox. The third transmission wheel is configured to rotate, thereby driving the rotating shaft to rotate. At the same time, the rotating shaft drives the gears at both ends to rotate. The gears mesh with the rack plate, and the rotation enables the linear movement of the rack plate, which in turn drives the support seat at the top of the rack plate to move back and forth, thereby moving the position of the spiral heat exchanger body on the surface of the support seat.

[0012] As a further embodiment of this utility model: a spiral plate is fixedly connected inside the heat exchanger body, a drain pipe is fixedly connected to the bottom of the hot air chamber, and a control valve is fixedly connected to the surface of the drain pipe. The drain pipe effectively discharges the particles and dirt washed by high pressure on the surface of the spiral plate, thereby enhancing the heat exchange effect.

[0013] The beneficial effects of this utility model are: 1. This spiral heat exchanger for waste heat recovery from smelting flue gas, through the setting of a high-pressure flushing component, when the spiral heat exchanger needs to prevent the accumulation of particulate matter and dirt in the flue gas, the first set of motors is started, driving the first gearbox to rotate the second transmission wheel, which in turn drives the first transmission belt to rotate. The rotation of the first transmission wheel, through mechanical drive, drives the flushing pipe to rotate, which in turn drives the high-pressure water pan to rotate. This causes the multi-group diversion pipes to rotate and flush the spiral plate. Through a reasonable layout, the rotating diversion pipes can effectively increase the cleaning efficiency. At the same time, the high-pressure water flowing in through the rotating water pipe joints flows into the high-pressure water pan. Under the action of high pressure, the high-pressure water is diverted to multiple diversion pipes, and sprayed onto the surface of the spiral plate through the blade-type flushing head. The strong pressure of the high-pressure water can effectively remove particulate matter and dirt from the surface, thereby achieving regular high-pressure flushing of the spiral heat exchanger, preventing the accumulation of particulate matter and dirt in the flue gas, maintaining the efficient operation of the heat exchanger, reducing maintenance costs, and extending the service life of the equipment.

[0014] 2. This spiral heat exchanger for waste heat recovery from smelting flue gas, through the arrangement of its installation components, allows for convenient installation and maintenance by operators. The second set of motors drives the second gearbox, which in turn drives the fourth transmission wheel to rotate, which in turn drives the second transmission belt to rotate, causing the third transmission wheel to rotate. This, in turn, drives the rotating shaft to rotate, simultaneously causing the gears at both ends to rotate. The gears mesh with the rack plate, and through rotation, the rack plate moves linearly, causing the support seat at the top of the rack plate to move back and forth. This moves the spiral heat exchanger body on the surface of the support seat, effectively improving the spiral heat exchanger's ability to flexibly coordinate with other equipment, ensuring stable operation, avoiding potential damage risks, and increasing the efficiency of installation and maintenance by operators. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 3 This is a schematic diagram of the high-pressure flushing assembly structure of this utility model; Figure 4 This is a schematic diagram of the installation component structure of this utility model.

[0017] In the diagram: 1. Heat exchanger body; 2. Hot air chamber; 3. End cover; 4. High-pressure flushing assembly; 401. Flushing pipe; 402. High-pressure water pan; 403. Diverter pipe; 404. Blade-type flushing head; 5. Support base; 6. Mounting assembly; 601. Rack plate; 602. Gear; 603. Groove plate; 7. Bearing; 8. Rotary water pipe joint; 9. First drive wheel; 10. First drive belt; 11. Second drive wheel; 12. First gearbox; 13. First set of motors; 14. Roller; 15. Fixed base; 16. Rotating shaft; 17. Third drive wheel; 18. Second drive belt; 19. Fourth drive wheel; 20. Second gearbox; 21. Second set of motors; 22. Spiral plate; 23. Drain pipe; 24. Control valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-4As shown, a spiral heat exchanger for recovering waste heat from smelting flue gas includes a heat exchanger body 1. A hot gas chamber 2 is fixedly connected to one side of the heat exchanger body 1, and an end cover 3 is fixedly connected to one end of the hot gas chamber 2. A high-pressure flushing assembly 4 is rotatably connected to the surface of the end cover 3. Two sets of support seats 5 are fixedly connected to the bottom of the heat exchanger body 1, and an installation assembly 6 is fixedly connected to the bottom of the support seats 5. The high-pressure flushing assembly 4 includes a flushing pipe 401 rotatably connected to the surface of the end cover 3. A high-pressure water pan 402 is fixedly connected to one end of the flushing pipe 401. Multiple diversion pipes 403 are fixedly connected to one side of the high-pressure water pan 402, and a blade-type flushing head 404 is fixedly connected to the other end of the diversion pipes 403. The installation assembly 6 includes a rack plate 601 fixedly connected to the bottom of the support seat 5. Multiple sets of gears 602 are rotatably connected to the bottom of the rack plate 601, and a grooved plate 603 is fixedly connected to the bottom of the gears 602. like Figure 3 As shown, a bearing 7 is sleeved on the surface of the flushing pipe 401, and a rotary water pipe joint 8 is rotatably connected to one end of the flushing pipe 401. A first transmission wheel 9 is sleeved on the surface of one end of the flushing pipe 401. The rotary water pipe joint 8 is mainly used to connect the flushing pipe 401 and high-pressure water, allowing high-pressure water to flow in the pipe and enter the flushing pipe 401 without being restricted by the rotation of the flushing pipe 401. like Figure 3 As shown, the surface of the first transmission wheel 9 is rotatably connected to the first transmission belt 10, and the other end of the first transmission belt 10 is rotatably connected to the second transmission wheel 11. The first transmission wheel 9 is configured to connect one end of the first transmission wheel 9 to the flushing pipe 401, and is used to drive the flushing pipe 401 to rotate by mechanical drive. like Figure 3 As shown, a first gearbox 12 is fixedly connected to one side of the second transmission wheel 11, and a first set of motors 13 is fixedly connected to the bottom of the first gearbox 12. The first set of motors 13 serves as the power source for the entire high-pressure flushing assembly 4 system. It converts electrical energy into mechanical energy and drives the second transmission wheel 11 and the flushing pipe 401 to rotate by rotation, providing the required power to meet the working requirements. like Figure 4 As shown, multiple sets of rollers 14 are fixedly connected to both sides of the channel plate 603, and two sets of fixed seats 15 are fixedly connected to the bottom of the channel plate 603. A rotating shaft 16 is rotatably connected to one side of the channel plate 603, and a third transmission wheel 17 is rotatably connected to the middle of the rotating shaft 16. Through the setting of the rollers 14, the rollers 14 drive the rack plate 601 to slide linearly by rotating, so that the rack plate 601 can move back and forth smoothly, while reducing the friction between the rack plate 601 and the channel plate 603 and extending the service life of the component. like Figure 4As shown, the surface of the third transmission wheel 17 is rotatably connected to the second transmission belt 18, and the other end of the second transmission belt 18 is rotatably connected to the fourth transmission wheel 19. The fourth transmission wheel 19 is fixedly connected to one side of the second gearbox 20, and the second set of motors 21 is fixedly connected to one side of the second gearbox 20. The third transmission wheel 17 is configured to rotate, thereby driving the rotating shaft 16 to rotate. At the same time, the rotating shaft 16 drives the gears 602 at both ends to rotate. The gears 602 mesh with the rack plate 601, and the rack plate 601 moves linearly through rotation, which drives the support seat 5 on the top of the rack plate 601 to move back and forth, thereby moving the position of the spiral heat exchanger body 1 on the surface of the support seat 5. like Figure 2 As shown, a spiral plate 22 is fixedly connected inside the heat exchanger body 1, and a drain pipe 23 is fixedly connected to the bottom of the hot air chamber 2. A control valve 24 is fixedly connected to the surface of the drain pipe 23. The drain pipe 23 effectively discharges the particles and dirt washed by high pressure on the surface of the spiral plate 22, thereby enhancing the heat exchange effect.

[0020] The working principle of this utility model is as follows: When the spiral heat exchanger needs to prevent the accumulation of particulate matter and dirt in the flue gas, the first set of motors 13 is started, driving the first gearbox 12 to rotate the second transmission wheel 11, which in turn drives the first transmission belt 10 to rotate, causing the first transmission wheel 9 to rotate. This mechanically drives the flushing pipe 401 to rotate, which in turn drives the high-pressure water pan 402 to rotate, causing the multi-group diversion pipes 403 to rotate and flush the spiral plate 22. Through a reasonable layout, the rotating diversion pipes 403 can effectively increase the cleaning efficiency. At the same time, the high-pressure water flowing in through the rotating water pipe joint 8 flows into the high-pressure water pan 402, and then, under the action of high pressure, the high-pressure water is diverted to multiple diversion pipes 403, and then flushed through the blade-type flushing head 4. 04. High-pressure water is sprayed onto the surface of the spiral plate 22. The high pressure of the water can effectively remove particulate matter and dirt from the surface. When it is convenient for operators to install and maintain the spiral heat exchanger, the second set of motors 21 is started, which drives the second gearbox 20 to rotate the fourth transmission wheel 19, which in turn drives the second transmission belt 18 to rotate, causing the third transmission wheel 17 to rotate, which in turn drives the rotating shaft 16 to rotate. At the same time, the rotating shaft 16 drives the gears 602 at both ends to rotate. The gears 602 mesh with the rack plate 601, and the rack plate 601 moves linearly through rotation, causing the support seat 5 on the top of the rack plate 601 to move back and forth, so that the position of the spiral heat exchanger body 1 on the surface of the support seat 5 moves.

[0021] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 spiral heat exchanger for recovering waste heat from smelting flue gas, comprising a heat exchanger body (1), characterized in that: A hot air chamber (2) is fixedly connected to one side of the heat exchanger body (1), an end cap (3) is fixedly connected to one end of the hot air chamber (2), a high-pressure flushing assembly (4) is rotatably connected to the surface of the end cap (3), two sets of support seats (5) are fixedly connected to the bottom of the heat exchanger body (1), and an installation assembly (6) is fixedly connected to the bottom of the support seats (5). The high-pressure flushing assembly (4) includes a flushing pipe (401) rotatably connected to the surface of the end cap (3). One end of the flushing pipe (401) is fixedly connected to a high-pressure water pan (402). One side of the high-pressure water pan (402) is fixedly connected to multiple diversion pipes (403). The other end of the diversion pipes (403) is fixedly connected to a blade-type flushing head (404). The mounting assembly (6) includes a rack plate (601) fixedly connected to the bottom of the support base (5), and a plurality of gears (602) are rotatably connected to the bottom of the rack plate (601), and a grooved plate (603) is fixedly connected to the bottom of the gears (602).

2. The spiral heat exchanger for waste heat recovery from smelting flue gas according to claim 1, characterized in that, The surface of the flushing pipe (401) is fitted with a bearing (7), one end of the flushing pipe (401) is rotatably connected to a rotating water pipe joint (8), and one end of the flushing pipe (401) is fitted with a first transmission wheel (9).

3. A spiral heat exchanger for waste heat recovery from smelting flue gas according to claim 2, characterized in that, The surface of the first transmission wheel (9) is rotatably connected to the first transmission belt (10), and the other end of the first transmission belt (10) is rotatably connected to the second transmission wheel (11).

4. A spiral heat exchanger for waste heat recovery from smelting flue gas according to claim 3, characterized in that, The first gearbox (12) is fixedly connected to one side of the second transmission wheel (11), and the first set of motors (13) is fixedly connected to the bottom of the first gearbox (12).

5. A spiral heat exchanger for waste heat recovery from smelting flue gas according to claim 1, characterized in that, Multiple sets of rollers (14) are fixedly connected to both sides of the groove plate (603), two sets of fixed seats (15) are fixedly connected to the bottom of the groove plate (603), a rotating shaft (16) is rotatably connected to one side of the groove plate (603), and a third transmission wheel (17) is rotatably connected to the middle of the rotating shaft (16).

6. A spiral heat exchanger for waste heat recovery from smelting flue gas according to claim 5, characterized in that, The surface of the third transmission wheel (17) is rotatably connected to the second transmission belt (18), and the other end of the second transmission belt (18) is rotatably connected to the fourth transmission wheel (19). The fourth transmission wheel (19) is fixedly connected to one side of the second gearbox (20), and the second gearbox (20) is fixedly connected to one side of the second motor (21).

7. A spiral heat exchanger for waste heat recovery from smelting flue gas according to claim 1, characterized in that, The heat exchanger body (1) is fixedly connected to a spiral plate (22), the bottom of the hot air chamber (2) is fixedly connected to a drain pipe (23), and the surface of the drain pipe (23) is fixedly connected to a control valve (24).

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