Waste heat utilization device for large-sized castings and forgings

Abstract

The utility model relates to the technical field of waste heat recovery, and discloses a large casting and forging waste heat utilization device which comprises a bottom plate, a support is fixedly mounted on the bottom plate, a water heat exchange tank is fixedly mounted on the bottom plate, a water outlet pipe is arranged on the water heat exchange tank, a mounting plate is fixedly mounted on the support, and a smoke heat exchange tank is arranged on the mounting plate. According to the technical scheme, by arranging a scraping plate, the inner wall of the water heat exchange tank can be scraped, incrustation left on the inner wall of the water heat exchange tank after long-time use can be removed, by arranging a cleaning brush, when a rotating plate rotates, the cleaning brush can clean the inner wall of the water heat exchange tank, and the cleaning brush can clean the inner wall of the water heat exchange tank and clean the inner wall of the water heat exchange tank. And the cleaning brush can be driven to rotate, so that impurities on the first filter plate are cleaned, the use is more convenient, all structures are matched with one another, the time is saved, and the efficiency is higher.

Description

Technical Field

[0001] The present application relates to the field of waste heat recovery technology, and specifically to a waste heat utilization device for large castings and forgings. Background Art

[0002] When large castings and forgings are processed, hot flue gas and hot wastewater are generated. Thermal power plants mostly use coal as fuel when generating electricity. However, a large amount of heat is usually lost during the coal combustion process, resulting in a decrease in power generation efficiency. Moreover, coal fuel is very precious as a non-renewable energy source. Its utilization efficiency will cause a certain amount of waste to the coal, resulting in excessive energy consumption and aggravated damage to the natural environment. At present, in order to reduce the heat loss during coal combustion, the flue gas heat generated in the boiler is reused, and the wastewater is usually discharged. This wastewater is generally called boiler drainage. Boiler drainage often contains a large amount of heat, and there is a certain amount of energy waste if it is directly discharged.

[0003] In the existing technology, when hot flue gas and hot wastewater are used for waste heat utilization, the hot flue gas is easily contaminated with debris on the filter due to its dissipation in the air. If it is not cleaned, the filtration efficiency will be affected. When hot wastewater is used for waste heat utilization, the inner wall of the device needs to be cleaned. Therefore, a large-scale casting and forging waste heat utilization device is required. Utility Model Content

[0004] The purpose of this application is to provide a device for utilizing waste heat of large castings and forgings, which solves the problems raised in the background technology.

[0005] An embodiment of the present application provides a waste heat utilization device for large castings and forgings, including a base plate, a bracket fixedly mounted on the base plate, a water heat exchange tank fixedly mounted on the base plate, a water outlet pipe provided on the water heat exchange tank, a mounting plate fixedly mounted on the bracket, a flue gas heat exchange tank provided on the mounting plate, a discharge pipe provided on the flue gas heat exchange tank, and feed pipes provided on the water heat exchange tank and the flue gas heat exchange tank.

[0006] By adopting the above technical solution, hot wastewater and hot flue gas can be added to the water heat exchange tank and the flue gas heat exchange tank respectively through the feed pipe, so as to utilize their waste heat.

[0007] Optionally, a first filter plate is fixedly mounted on the inner wall of the flue gas heat exchange tank, a rotating block is provided on the first filter plate, a fixing rod is fixedly mounted on the rotating block, a fan blade is provided on the fixing rod, and a threaded section is provided on the fixing rod.

[0008] By adopting the above technical solution, when hot flue gas enters, it drives the fan blades to rotate, thereby driving the fixed rod to rotate, and thus driving the rotating block to rotate on the first filter plate.

[0009] Optionally, a sliding groove is provided on the first filter plate, a rotating plate is provided on the rotating block, a limit block is fixedly installed on the rotating plate, and the limit block is slidably installed in the sliding groove.

[0010] By adopting the above technical solution, when the fixing rod rotates, the rotating plate will be driven to rotate, and under the action of the limiting groove, the rotating plate can be rotated along the limiting groove.

[0011] Optionally, a partition is provided in the water heat exchange tank, and the other end of the fixing rod is rotatably mounted on the partition.

[0012] By adopting the above technical solution, the partition can divide the water heat exchange tank into two parts.

[0013] Optionally, a second filter plate is threadedly mounted on the fixing rod.

[0014] By adopting the above technical solution, when the fixing rod rotates, the second filter plate will be driven to move.

[0015] Optionally, a through groove is provided on the partition, and a heating box is provided below the partition of the water heat exchange tank.

[0016] By adopting the above technical solution, the hot wastewater above the water heat exchange tank passes through the second filter plate and then enters the heating box through the groove on the partition to be heated, so that it can be transported to the exhaust heating system for heating.

[0017] Optionally, a scraper is provided on the side of the second filter plate.

[0018] By adopting the above technical solution, when the second filter plate moves, it will drive the scraper to move, thereby scraping the inner wall of the water heat exchange tank, and removing the scale left on the inner wall of the water heat exchange tank after long-term use.

[0019] Optionally, a cleaning brush is provided on one side of the rotating plate close to the first filter plate.

[0020] By adopting the above technical solution, when the rotating plate rotates, it will drive the cleaning brush to rotate, thereby cleaning the impurities on the first filter plate.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] The technical solution of the present application can scrape the inner wall of the water heat exchange box by setting a scraper, so as to remove the scale left on the inner wall of the water heat exchange box after long-term use. By setting a cleaning brush, when the rotating plate rotates, it will drive the cleaning brush to rotate, thereby cleaning the impurities on the first filter plate. It is more convenient to use, and the various structures cooperate with each other to save time and be more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the large casting and forging waste heat utilization device of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the flue gas heat exchange tank of the large casting and forging waste heat utilization device in this application;

[0026] Figure 3 This is a schematic diagram of the internal structure of the flue gas heat exchange tank of the large casting and forging waste heat utilization device in this application;

[0027] Figure 4 This is a schematic diagram of the internal structure of the water heat exchange tank of the large casting and forging waste heat utilization device in this application.

[0028] In the figure: 1. Base plate; 2. Water heat exchange tank; 3. Water outlet pipe; 4. Bracket; 5. Mounting plate; 6. Flue gas heat exchange tank; 7. Discharge pipe; 8. Feed pipe; 9. Threaded section; 10. First filter plate; 11. Fan blade; 12. Fixed rod; 13. Rotating block; 14. Rotating plate; 15. Sliding groove; 16. Second filter plate; 17. Partition; 18. Through groove; 19. Heating box. DETAILED DESCRIPTION

[0029] See also Figure 1-4 The present application provides a technical solution: a waste heat utilization device for large castings and forgings, comprising a base plate 1, a bracket 4 fixedly mounted on the base plate 1, a water heat exchange tank 2 fixedly mounted on the base plate 1, a water outlet pipe 3 provided on the water heat exchange tank 2, a mounting plate 5 fixedly mounted on the bracket 4, a flue gas heat exchange tank 6 provided on the mounting plate 5, a discharge pipe 7 provided on the flue gas heat exchange tank 6, a feed pipe 8 provided on the water heat exchange tank 2 and the flue gas heat exchange tank 6, hot wastewater and hot flue gas can be added to the water heat exchange tank 2 and the flue gas heat exchange tank 6 respectively through the feed pipe 8, thereby utilizing their waste heat.

[0030] In the technical solution of this application, if Figure 2 As shown, a first filter plate 10 is fixedly mounted on the inner wall of the flue gas heat exchange tank 6, a rotating block 13 is provided on the first filter plate 10, a fixing rod 12 is fixedly mounted on the rotating block 13, a fan blade 11 is provided on the fixing rod 12, and a threaded section 9 is provided on the fixing rod 12. When hot flue gas enters, the fan blade 11 is driven to rotate, thereby driving the fixing rod 12 to rotate, thereby driving the rotating block 13 to rotate on the first filter plate 10.

[0031] In the technical solution of this application, if Figure 2 and3 As shown, a sliding groove 15 is provided on the first filter plate 10, and a rotating plate 14 is provided on the rotating block 13. A limiting block is fixedly installed on the rotating plate 14, and the limiting block is slidably installed in the sliding groove 15. When the fixed rod 12 rotates, it will drive the rotating plate 14 to rotate. Under the action of the limiting groove, the rotating plate 14 can rotate along the limiting groove.

[0032] In the technical solution of this application, if Figure 4 As shown, a partition 17 is provided in the water heat exchange tank 2, and the other end of the fixing rod 12 is rotatably mounted on the partition 17. The partition 17 can divide the water heat exchange tank 2 into two parts.

[0033] In the technical solution of this application, if Figure 4 As shown, a second filter plate 16 is threadedly mounted on the fixing rod 12 . When the fixing rod 12 rotates, the second filter plate 16 is driven to move.

[0034] In the technical solution of this application, if Figure 4 As shown, a through groove 18 is provided on the partition 17, and a heating box 19 is provided under the partition 17 of the water heat exchange tank 2. After the hot waste water above the water heat exchange tank 2 passes through the second filter plate 16, it enters the heating box 19 through the through groove 18 on the partition 17 and is heated, so that it can be transported to the exhaust heating system for heating.

[0035] In the technical solution of this application, if Figure 4 As shown, a scraper is provided on the side of the second filter plate 16. When the second filter plate 16 moves, the scraper is driven to move, thereby scraping the inner wall of the water heat exchange tank 2, and the scale left on the inner wall of the water heat exchange tank 2 after long-term use can be removed.

[0036] In the technical solution of this application, if Figure 2 As shown, a cleaning brush is provided on one side of the rotating plate 14 close to the first filter plate 10 . When the rotating plate 14 rotates, the cleaning brush is driven to rotate, thereby cleaning impurities on the first filter plate 10 .

[0037] Hot waste water and hot flue gas are added to the water heat exchange tank 2 and the flue gas heat exchange tank 6 respectively through the feed pipe 8. When the hot flue gas enters, it will drive the fan blades 11 to rotate, thereby driving the fixed rod 12 to rotate, thereby driving the rotating block 13 to rotate on the first filter plate 10. When the fixed rod 12 rotates, it will drive the rotating plate 14 to rotate. Under the action of the limit groove, the rotating plate 14 can be made to rotate along the limit groove. When the fixed rod 12 rotates, it will drive the second filter plate 16 to move. When the second filter plate 16 moves, it will drive the scraper to move, thereby scraping the inner wall of the water heat exchange tank 2, and can remove the scale left on the inner wall of the water heat exchange tank 2 after long-term use. When the rotating plate 14 rotates, it will drive the cleaning brush to rotate, thereby cleaning the impurities on the first filter plate 10.

Claims

1. Large casting and forging waste heat utilization device, characterized by: The invention comprises a bottom plate (1), a bracket (4) is fixedly mounted on the bottom plate (1), a water heat exchange tank (2) is fixedly mounted on the bottom plate (1), a water outlet pipe (3) is provided on the water heat exchange tank (2), a mounting plate (5) is fixedly mounted on the bracket (4), a flue gas heat exchange tank (6) is provided on the mounting plate (5), a discharge pipe (7) is provided on the flue gas heat exchange tank (6), and a feed pipe (8) is provided on the water heat exchange tank (2) and the flue gas heat exchange tank (6).

2. The device for utilizing waste heat from large castings and forgings according to claim 1, characterized in that: A first filter plate (10) is fixedly mounted on the inner wall of the flue gas heat exchange tank (6), a rotating block (13) is provided on the first filter plate (10), a fixing rod (12) is fixedly mounted on the rotating block (13), a fan blade (11) is provided on the fixing rod (12), and a threaded section (9) is provided on the fixing rod (12).

3. The device for utilizing waste heat from large castings and forgings according to claim 2, characterized in that: A sliding groove (15) is provided on the first filter plate (10), a rotating plate (14) is provided on the rotating block (13), a limit block is fixedly installed on the rotating plate (14), and the limit block is slidably installed in the sliding groove (15).

4. The device for utilizing waste heat from large castings and forgings according to claim 1, wherein: A partition (17) is provided in the water heat exchange tank (2), and the other end of the fixing rod (12) is rotatably mounted on the partition (17).

5. The device for utilizing waste heat from large castings and forgings according to claim 4, characterized in that: A second filter plate (16) is threadedly mounted on the fixing rod (12).

6. The device for utilizing waste heat from large castings and forgings according to claim 4, characterized in that: A through groove (18) is provided on the partition (17), and a heating box (19) is provided below the partition (17) of the water heat exchange tank (2).

7. The device for utilizing waste heat from large castings and forgings according to claim 5, characterized in that: A scraper is provided on the side of the second filter plate (16).

8. The device for utilizing waste heat from large castings and forgings according to claim 3, characterized in that: A cleaning brush is provided on one side of the rotating plate (14) close to the first filter plate (10).

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