Converter gas waste heat recovery device

Abstract

The utility model discloses a converter gas waste heat recovery device, which belongs to the technical field of waste heat recovery and comprises a heat exchange box and heat exchange tubes which are positioned in the heat exchange box and are uniformly arranged along the length direction. The water filter screen is arranged at the water inlet end of the heat exchange box, the smoke dust filter box is arranged at the air inlet pipe, and the gas filter screen is installed in the smoke dust filter box, so that water and gas can be filtered in the using process, the heat conduction effect in the waste heat recovery process is guaranteed, and the waste heat recovery efficiency is improved. A water filter screen can be self-cleaned through a sludge cleaning mechanism composed of a water pump volute, a shaft rod, an impeller and a first scraping plate, in addition, through a transmission assembly composed of the shaft rod, a transmission bin, a connecting rod, a driven gear and a driving gear, a second scraping plate can be subjected to transmission control, the surface of a gas filter screen is cleaned, the functionality of the device is improved, and the practicability is high. And in the cleaning process, electric power is not needed for driving control, more energy is saved in use, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to a waste heat recovery device, in particular to a converter gas waste heat recovery device, and belongs to the technical field of waste heat recovery. Background Art

[0002] In the prior art, for example, the utility model with application number 202223308023.8 discloses a steelmaking converter flue gas waste heat recovery system. In order to solve the problem that the flue gas contains a large amount of dust and impurities, which will cause scaling of the outer wall of the pipe for a long time, thereby reducing the heat exchange efficiency and greatly affecting the waste heat recovery effect, the scraper assembly can be raised and lowered along the heat exchange tube through the cooperation of structures such as the cylinder, support plate, scraper assembly and scraper blade, so that the scraper blade can scrape the outer wall of the heat exchange tube, and then the dust and impurities attached to the outer wall of the heat exchange tube can be scraped off, effectively preventing the scaling of the outer wall of the heat exchange tube, ensuring the heat exchange efficiency, and greatly improving the waste heat recovery effect of the device.

[0003] Similar to the above application, there are still some shortcomings:

[0004] Although the outer wall of the heat exchange tube can be cleaned during the waste heat recovery process, the water passing through the inside of the heat exchange tube cannot be filtered and cleaned, and scale is easily generated inside the heat exchange tube. In addition, a separate control device is required during the cleaning process, which increases energy consumption and has low practicality.

[0005] Therefore, a converter gas waste heat recovery device is designed to optimize the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a converter gas waste heat recovery device, which is provided with a water filter at the water inlet end of the heat exchange box and a smoke filter box at the air inlet pipe, and a gas filter is installed inside the smoke filter box, so that water and gas can be filtered simultaneously during use to ensure the heat conduction effect in the waste heat recovery process, and the sludge cleaning mechanism composed of a water pump volute, a shaft, an impeller, and a first scraper can self-clean the water filter, and the transmission assembly composed of a shaft, a transmission bin, a connecting rod, a driven gear, and a driving gear can control the transmission of the second scraper to clean the surface of the gas filter, thereby improving the functionality of the device, and no electricity is required for drive control during the cleaning process, so it is more energy-saving and more practical.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A converter gas waste heat recovery device comprises a heat exchange box, heat exchange tubes located inside the heat exchange box and evenly arranged along the length direction, a drain outlet arranged at one end of the heat exchange box and an exhaust pipe located at the top of the heat exchange box near the drain outlet, a water filter is provided inside the heat exchange box near the water inlet end, a sludge cleaning mechanism is provided on the outside of the water filter, a smoke filter box is provided at the outer end of the heat exchange box, an air inlet pipe is installed on one side of the smoke filter box, an air guide pipe is provided between the top of the smoke filter box and the top of the heat exchange box, a gas filter is provided at the inner top of the smoke filter box, and a dust removal mechanism is provided at the bottom of the gas filter.

[0009] Preferably, partitions are alternately arranged at the inner top and the inner bottom of the heat exchange box, the partitions are smaller than the height of the interior of the heat exchange box, and heat dissipation fins are evenly arranged at the sides of the heat exchange tubes along the circumferential direction.

[0010] Preferably: the sludge cleaning structure includes a water pump volute, a shaft, an impeller and a first scraper. The water pump volute is fixed at one end of the heat exchanger box away from the drain outlet. The shaft is rotatably installed inside the water pump volute, and the shaft extends to the inside of the heat exchanger box. An impeller is provided on the outside of the shaft above the water inlet of the water pump volute, and the end of the shaft is fixed with a first scraper that fits the outside of the water filter.

[0011] Preferably: a sewage outlet is provided at the bottom of the heat exchange box and below the first scraper, and a valve is provided at the sewage outlet.

[0012] Preferably: the dust removal mechanism includes a second scraper, a collection box and a transmission assembly, the second scraper is attached to the bottom of the gas filter, and a transmission assembly is provided between the bottom of the second scraper and the end of the shaft, and a collection box is provided at the bottom of the smoke filter box.

[0013] Preferably: the bottom of the smoke filter box is provided with a bevel, and the bevel is coated with a smooth coating.

[0014] Preferably: the transmission assembly includes a transmission bin, a connecting rod, a driven gear and a driving gear, the transmission bin is fixed inside the smoke filter box, the inner top end of the transmission bin is rotatably mounted with a connecting rod, the top end of the connecting rod is fixedly connected to the middle position of the second scraper, the bottom end of the connecting rod is located inside the transmission bin, the bottom end of the connecting rod is mounted with a driven gear, the outer side of the driven gear is meshed with a driving gear, and the driving gear is fixed to the end of the shaft.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a converter gas waste heat recovery device, which is provided with a water filter at the water inlet end of the heat exchange box, and a smoke filter box at the air inlet pipe, and a gas filter is installed inside the smoke filter box, which can filter water and gas at the same time during use, thereby ensuring the heat conduction effect in the waste heat recovery process;

[0017] The sludge cleaning mechanism composed of the water pump volute, shaft, impeller and first scraper can self-clean the water filter. In addition, the transmission assembly composed of the shaft, transmission bin, connecting rod, driven gear and driving gear can control the second scraper to clean the surface of the gas filter, thereby improving the functionality of the device. No electricity is required for drive control during the cleaning process, so it is more energy-saving and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front cross-sectional view of the utility model;

[0019] Figure 2 This is an internal diagram of the smoke filter box of the utility model;

[0020] Figure 3 This is a diagram of the sludge cleaning structure of the utility model;

[0021] Figure 4 This is a cross-sectional view of the end of the heat exchange tube of the present invention.

[0022] In the figure: 1. heat exchange box; 2. heat exchange tube; 3. drain outlet; 4. water filter; 5. exhaust pipe; 6. smoke filter box; 7. gas filter; 8. air inlet pipe; 9. air guide pipe; 10. water pump volute; 11. shaft; 12. impeller; 13. first scraper; 14. second scraper; 15. collection box; 16. transmission compartment; 17. connecting rod; 18. driven gear; 19. driving gear; 20. cooling fins. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figure 1-Figure 4 As shown, this embodiment provides a converter gas waste heat recovery device, including a heat exchange box 1, a heat exchange tube 2 located inside the heat exchange box 1 and evenly arranged along the length direction, a drain port 3 arranged at one end of the heat exchange box 1 and an exhaust pipe 5 located at the top of the heat exchange box 1 near the drain port 3, a water filter 4 is provided near the water inlet end of the heat exchange box 1, a sludge cleaning mechanism is provided on the outside of the water filter 4, a smoke filter box 6 is provided at the outer end of the heat exchange box 1, an air inlet pipe 8 is installed on one side of the smoke filter box 6, an air guide pipe 9 is provided between the top of the smoke filter box 6 and the top of the heat exchange box 1, a gas filter 7 is provided at the inner top of the smoke filter box 6, and a dust removal mechanism is provided at the bottom of the gas filter 7.

[0025] General working principle: when in use, the air inlet pipe 8 is connected to the discharge port of the converter, and the flue gas discharged from the converter enters the interior of the smoke filter box 6 through the air inlet pipe 8, and is filtered by the gas filter 7 to prevent the dust in the flue gas from adhering to the heat exchange tube 2, thereby ensuring the heat conduction effect during heat exchange. After the flue gas is filtered, it enters the interior of the heat exchange box 1, and the water source also enters the interior of the heat exchange box 1 at the same time, and enters the interior of the heat exchange tube 2 after being filtered by the water filter 4, taking away the heat in the flue gas. The cooled flue gas is discharged from the interior of the exhaust pipe 5, and the heated water source is discharged through the drain port 3 for collection and reuse. In addition, in order to ensure the stable transportation of gas and water sources during the heat exchange, the water filter 4 is cleaned by the sludge cleaning mechanism, and the gas filter 7 is cleaned by the dust removal mechanism.

[0026] In this embodiment, partitions are alternately arranged at the inner top and the inner bottom of the heat exchange box 1 , and the partitions are smaller than the height of the interior of the heat exchange box 1 . Heat dissipation fins 20 are evenly arranged along the circumferential direction on the sides of the heat exchange tubes 2 .

[0027] Local working principle: After the gas enters the heat exchange box 1, the residence time of the hot air in the heat exchange box 1 is prolonged through the barrier effect of the partition, and the use of the heat dissipation fins 20 increases the contact area between the hot air and water, ensuring the heat exchange effect.

[0028] In this embodiment, the sludge cleaning structure includes a water pump volute 10, a shaft 11, an impeller 12 and a first scraper 13. The water pump volute 10 is fixed at one end of the heat exchange box 1 away from the drain outlet 3. The shaft 11 is rotatably installed inside the water pump volute 10, and the shaft 11 extends to the inside of the heat exchange box 1. An impeller 12 is provided on the outside of the shaft 11 above the water inlet of the water pump volute 10, and a first scraper 13 that fits the outside of the water filter 4 is fixed at the end of the shaft 11.

[0029] Local working principle: During heat exchange, water enters from the water inlet of the water pump volute 10, impacts the impeller 12, and drives the impeller 12 to rotate. Then the water enters the interior of the heat exchange box 1, and is filtered through the water filter 4. The rotation of the impeller 12 drives the shaft 11 and the first scraper 13 to rotate, and the surface of the water filter 4 is self-cleaned without the need for electric drive.

[0030] In this embodiment, a sewage outlet is provided at the bottom of the heat exchange box 1 and below the first scraper 13, and a valve is provided at the sewage outlet.

[0031] Local working principle: After the device has been used for a long time, there will be a certain amount of sludge at the end of the heat exchange box 1. At this time, open the sewage outlet to clean and discharge the sludge to ensure that the inside of the heat exchange box 1 is clean.

[0032] In this embodiment, the dust removal mechanism includes a second scraper 14, a collecting box 15 and a transmission assembly. The second scraper 14 is attached to the bottom of the gas filter 7, and a transmission assembly is provided between the bottom of the second scraper 14 and the end of the shaft 11. The collection box 15 is provided at the bottom of the smoke filter box 6.

[0033] Partial working principle: During dust filtering, the second scraper 14 is driven to rotate by the transmission assembly, and the second scraper 14 sweeps the dust at the bottom of the gas filter 7 and stores it in the collection box 15.

[0034] In this embodiment, the bottom of the smoke filter box 6 is provided with a bevel, and the bevel is coated with a smooth coating.

[0035] Partial working principle: When the dust falls, it is guided along the bevel at the bottom of the smoke filter box 6 to the inside of the collection box 15 to avoid dust accumulation.

[0036] In this embodiment, the transmission assembly includes a transmission bin 16, a connecting rod 17, a driven gear 18 and a driving gear 19. The transmission bin 16 is fixed inside the smoke filter box 6. The inner top end of the transmission bin 16 is rotatably mounted with a connecting rod 17. The top end of the connecting rod 17 is fixedly connected to the middle position of the second scraper 14. The bottom end of the connecting rod 17 is located inside the transmission bin 16. The bottom end of the connecting rod 17 is mounted with a driven gear 18. The outer side of the driven gear 18 is meshed with a driving gear 19. The driving gear 19 is fixed to the end of the shaft 11.

[0037] Partial working principle: When the shaft 11 rotates, it will drive the driving gear 19 to rotate, and the rotation of the driving gear 19 will drive the driven gear 18 to rotate. The driven gear 18 cooperates with the connecting rod 17 to drive the second scraper 14 to rotate. The dust removal is carried out in a transmission control mode, which is more energy-saving.

[0038] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A converter gas waste heat recovery device, comprising a heat exchange box (1), heat exchange tubes (2) located inside the heat exchange box (1) and evenly arranged along the length direction, a water outlet (3) arranged at one end of the heat exchange box (1), and an exhaust pipe (5) located at the top of the heat exchange box (1) near one end of the water outlet (3), characterized in that: A water filter (4) is provided inside the heat exchange box (1) near the water inlet end, a sludge cleaning mechanism is provided outside the water filter (4), a smoke filter box (6) is provided at the outer end of the heat exchange box (1), an air inlet pipe (8) is installed on one side of the smoke filter box (6), an air guide pipe (9) is provided between the top of the smoke filter box (6) and the top of the heat exchange box (1), a gas filter (7) is provided at the inner top of the smoke filter box (6), and a dust removal mechanism is provided at the bottom of the gas filter (7).

2. A converter gas waste heat recovery device according to claim 1, characterized in that: Partitions are alternately arranged at the inner top and the inner bottom of the heat exchange box (1), and the partitions are smaller than the height of the interior of the heat exchange box (1). Heat dissipation fins (20) are evenly arranged along the circumferential direction at the sides of the heat exchange tubes (2).

3. The converter gas waste heat recovery device according to claim 1, characterized in that: The sludge cleaning structure comprises a water pump volute (10), a shaft (11), an impeller (12) and a first scraper (13); the water pump volute (10) is fixed to one end of the heat exchange box (1) away from the drain outlet (3); the shaft (11) is rotatably mounted inside the water pump volute (10), and the shaft (11) extends to the inside of the heat exchange box (1); the impeller (12) is arranged on the outside of the shaft (11) above the water inlet of the water pump volute (10); and the first scraper (13) which is in contact with the outside of the water filter (4) is fixed to the end of the shaft (11).

4. The converter gas waste heat recovery device according to claim 3, characterized in that: A sewage outlet is provided at the bottom of the heat exchange box (1) and below the first scraper (13), and a valve is provided at the sewage outlet.

5. The converter gas waste heat recovery device according to claim 3, characterized in that: The dust removal mechanism comprises a second scraper (14), a collection box (15) and a transmission assembly. The second scraper (14) is attached to the bottom of the gas filter (7), and a transmission assembly is provided between the bottom of the second scraper (14) and the end of the shaft (11). The collection box (15) is provided at the bottom of the smoke filter box (6).

6. The converter gas waste heat recovery device according to claim 5, characterized in that: The bottom of the smoke filter box (6) is provided with a bevel, and the bevel is coated with a smooth coating.

7. The converter gas waste heat recovery device according to claim 5, characterized in that: The transmission assembly comprises a transmission bin (16), a connecting rod (17), a driven gear (18) and a driving gear (19); the transmission bin (16) is fixed inside the smoke filter box (6); the inner top end of the transmission bin (16) is rotatably mounted with a connecting rod (17); the top end of the connecting rod (17) is fixedly connected to the middle position of the second scraper (14); the bottom end of the connecting rod (17) is located inside the transmission bin (16); the bottom end of the connecting rod (17) is mounted with a driven gear (18); the outer side of the driven gear (18) is meshed with a driving gear (19); the driving gear (19) is fixed to the end of the shaft (11).

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