Reflux flue gas recirculation industrial boiler combustion device
By designing a recirculation combustion device for reflow flue gas in an industrial boiler device, the problem of emission of flue gas after primary combustion is solved, the secondary combustion and efficient combustion of flue gas are achieved, and the fuel utilization and thermal efficiency are improved.
Patent Information
- Application Number
- CN202421318300.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In existing industrial boiler devices, flue gas is directly discharged after only one combustion, resulting in insufficient combustion of pollutants and low environmental pollution and thermal efficiency.
A reflux flue gas recirculation industrial boiler combustion device is designed to return the not-completely burned flue gas to the inside of the shell through the reflux tube, and then mix it with the new flue gas for combustion, improving combustion efficiency.
The secondary combustion of flue gas is achieved, the utilization rate and combustion efficiency of fuel are improved, environmental pollution is reduced, and thermal efficiency is improved.
Smart Images
Figure CN222503831U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of industrial boilers, in particular to a combustion device for an industrial boiler with a reflux flue gas recirculation. Background Art
[0002] A large amount of industrial exhaust gas is generated during the production process of steel and chemical enterprises. These industrial exhaust gases have a certain calorific value. Using gas boilers to burn such industrial exhaust gas can not only reduce environmental pollution but also effectively utilize energy. There is a consensus in the industry. Therefore, flue gas recirculation technology, as the main technology to reduce boiler pollutant emissions, is also naturally applied to gas boilers.
[0003] In order to ensure that the exhaust gas meets the emission standards, the flue gas needs to be completely burned. In existing devices, the flue gas is often discharged after only one combustion, resulting in incomplete combustion of pollutants in the flue gas. At this time, the flue gas still contains combustible pollutants. If it is discharged directly at this time, it will cause pollution to the surrounding environment. At the same time, after the burned flue gas is discharged, the new flue gas entering the shell needs to be reheated, and the thermal efficiency is low. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a recirculating flue gas industrial boiler combustion device.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a recirculating flue gas recirculating industrial boiler combustion device, comprising a shell, a circulation port is opened on the top of the shell, and the number of the circulation ports is two, a turntable groove is opened on the top of the shell, a slide groove is opened on the top of the shell, and the number of the slide grooves is two, a connecting groove is opened on the bottom of the inner wall of the slide groove, a turntable is movably connected to the bottom of the inner wall of the turntable groove, a linkage groove is opened on the inner wall of the turntable, and the number of the linkage grooves is two, a slide plate is installed inside each of the two slide grooves, a linkage column is fixedly connected to the bottom of the slide plate, and the linkage column is located inside the linkage groove, a rotating rod is fixedly connected to the outer wall of the turntable, a moving groove is opened inside the rotating rod, a fixed block is fixedly connected to the top of the shell, and the number of the fixed blocks is two, a screw rod is movably connected to the inner wall of the fixed block on the left, and a motor is fixedly connected to the outer wall of the fixed block on the right, the output end of the motor is fixedly connected to the other end of the screw rod, the outer wall of the screw rod is threadedly connected to the moving block, and the bottom of the moving block is fixedly connected to the moving column, and the moving column is located inside the moving groove.
[0006] As a further description of the above technical solution:
[0007] A return pipe is fixedly connected to the top of the shell, and there are two return pipes, and the other ends of the two return pipes are both connected to the interior of the shell.
[0008] As a further description of the above technical solution:
[0009] The two circulation ports are respectively connected to the two chutes, and the two chutes are both connected to the turntable groove through the connecting groove.
[0010] As a further description of the above technical solution:
[0011] An exhaust port is provided on the top of the shell, a filter bin is fixedly connected to the top of the shell, the filter bin is communicated with the interior of the shell through the exhaust port, an installation groove is provided inside the filter bin, a filter screen is installed inside the installation groove, and a handle is fixedly connected to the outer wall of the filter screen.
[0012] As a further description of the above technical solution:
[0013] The top of the filter bin is fixedly connected with an exhaust pipe, the back of the shell is provided with a bin door, and the outer wall of the bin door is fixedly connected with a handle.
[0014] As a further description of the above technical solution:
[0015] An air inlet is fixedly connected to the front side of the shell, an igniter is fixedly connected to the outer wall of the shell, and an ignition end of the igniter is located inside the shell.
[0016] The utility model has the following beneficial effects:
[0017] 1. In the initial state, the two slides close the two circulation ports respectively. When combustion is carried out inside the shell, the motor drives the screw to rotate. The moving block connected to the screw thread moves to the left along the top of the shell as the screw rotates. When the moving block moves, it drives the moving column to move to the left together. The moving column moves along the moving groove opened inside the rotating rod, so that the rotating rod and the turntable rotate clockwise. When the turntable rotates clockwise, the two linkage columns move relatively along the linkage grooves opened inside the turntable, so that the two slides move relatively with the two linkage columns until the two circulation ports are closed respectively. At this time, part of the flue gas flows back to the shell through the two return pipes respectively. The flue gas is then recirculated and burned again, and participates in the combustion process again together with the new flue gas, thereby improving the fuel utilization rate and combustion efficiency. In the existing devices, the flue gas is often discharged after only one combustion, resulting in incomplete combustion of pollutants in the flue gas. At this time, the flue gas still contains combustible pollutants. If it is directly discharged at this time, it will cause pollution to the surrounding environment. At the same time, after the burned flue gas is discharged, the new flue gas enters the inside of the shell and needs to be reheated, and the thermal efficiency is low. The device can recirculate the flue gas for secondary combustion, and participate in the combustion process again together with the new flue gas, thereby improving the fuel utilization rate and combustion efficiency.
[0018] 2. By connecting the filter bin on the top of the shell, the smoke enters the filter bin from the exhaust port and is discharged after being filtered by the filter, which effectively filters out the debris in the smoke. When the filter is blocked, simply pull the handle to pull the filter out, clean it or replace it with a new one. The operation is simple. At the same time, a bin door is installed on the back of the shell, so that the inside of the device can be cleaned when it is not in use to prevent dust accumulation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the overall structure of a recirculating flue gas industrial boiler combustion device from a first perspective proposed by the utility model;
[0020] Figure 2 This is a schematic diagram of the shell structure of a recirculating flue gas industrial boiler combustion device proposed by the utility model;
[0021] Figure 3 This is a schematic diagram of the internal structure of a recirculating flue gas industrial boiler combustion device proposed by the utility model;
[0022] Figure 4 This is a schematic diagram of the turntable structure of a recirculating flue gas industrial boiler combustion device proposed by the utility model;
[0023] Figure 5 This is a schematic diagram of the rotating rod structure of a recirculating flue gas industrial boiler combustion device proposed by the utility model;
[0024] Figure 6 This is a second perspective overall structural schematic diagram of a recirculating flue gas industrial boiler combustion device proposed by the utility model.
[0025] Legend:
[0026] 1. Shell; 2. Circulation port; 3. Turntable slot; 4. Slide slot; 5. Connecting slot; 6. Turntable; 7. Linkage slot; 8. Slide plate; 9. Linkage column; 10. Rotating rod; 11. Moving slot; 12. Fixed block; 13. Screw rod; 14. Motor; 15. Moving block; 16. Moving column; 17. Reflux pipe; 18. Exhaust port; 19. Filter compartment; 20. Installation slot; 21. Filter; 22. Handle; 23. Exhaust pipe; 24. Compartment door; 25. Handle; 26. Air inlet; 27. Ignitor. DETAILED DESCRIPTION
[0027] Reference Figure 1-6The utility model provides a reflux flue gas recirculation industrial boiler combustion device: comprising a shell 1, a circulation port 2 is provided on the top of the shell 1, and the number of the circulation ports 2 is two, a turntable groove 3 is provided on the top of the shell 1, a chute 4 is provided on the top of the shell 1, and the number of the chute 4 is two, a connecting groove 5 is provided on the bottom of the inner wall of the chute 4, a turntable 6 is movably connected to the bottom of the inner wall of the turntable groove 3, a linkage groove 7 is provided on the inner wall of the turntable 6, and the number of the linkage grooves 7 is two, a slide plate 8 is installed inside the two slides 4, and a linkage column 9 is fixedly connected to the bottom of the slide plate 8, and the linkage The column 9 is located inside the linkage groove 7, the outer wall of the turntable 6 is fixedly connected with a rotating rod 10, and a moving groove 11 is opened inside the rotating rod 10, and a fixed block 12 is fixedly connected to the top of the shell 1, and there are two fixed blocks 12, and the inner wall of the left fixed block 12 is movably connected with a screw rod 13, and the outer wall of the right fixed block 12 is fixedly connected with a motor 14, and the output end of the motor 14 is fixedly connected to the other end of the screw rod 13, and the outer wall of the screw rod 13 is threadedly connected with a moving block 15, and the bottom of the moving block 15 is fixedly connected with a moving column 16, and the moving column 16 is located inside the moving groove 11.
[0028] A return pipe 17 is fixedly connected to the top of the shell 1, and there are two return pipes 17. The other ends of the two return pipes 17 are connected to the interior of the shell 1, and the two circulation ports 2 are respectively connected to the two chutes 4, and the two chutes 4 are connected to the turntable groove 3 through the connecting groove 5.
[0029] An exhaust port 18 is provided at the top of the shell 1, and a filter chamber 19 is fixedly connected to the top of the shell 1. The filter chamber 19 is connected to the interior of the shell 1 through the exhaust port 18. An installation groove 20 is provided inside the filter chamber 19, and a filter screen 21 is installed inside the installation groove 20. A handle 22 is fixedly connected to the outer wall of the filter screen 21.
[0030] An exhaust pipe 23 is fixedly connected to the top of the filter bin 19, a bin door 24 is installed on the back of the shell 1, a handle 25 is fixedly connected to the outer wall of the bin door 24, an air inlet 26 is fixedly connected to the front of the shell 1, an igniter 27 is fixedly connected to the outer wall of the shell 1, and the ignition end of the igniter 27 is located inside the shell 1.
[0031] Working principle: The igniter 27 burns the flue gas entering the housing 1. In the initial state, the two slide plates 8 respectively close the two circulation ports 2. When the housing 1 is burning, the motor 14 drives the screw rod 13 to rotate. The moving block 15 threadedly connected to the screw rod 13 moves to the left along the top of the housing 1 as the screw rod 13 rotates. When the moving block 15 moves, it drives the moving column 16 to move to the left together. The moving column 16 moves along the moving groove 11 opened inside the rotating rod 10, so that the rotating rod 10 and the turntable 6 rotate clockwise. When the turntable 6 rotates clockwise, the two linkage columns 9 respectively move along the linkage groove 7 opened inside the turntable 6. The two slide plates 8 move relative to each other with the two linkage columns 9 until the two circulation ports 2 are closed respectively. At this time, part of the smoke flows back to the interior of the shell 1 through the two reflux pipes 17 respectively and burns again. The smoke enters the filter bin 19 from the exhaust port 18 and is filtered by the filter screen 21 before being discharged, which effectively filters out the debris in the smoke. When the filter screen 21 is blocked, the handle 22 is directly pulled to pull the filter screen 21 outwards, and the filter screen 21 can be cleaned or replaced with a new one. The operation is simple. At the same time, a bin door 24 is installed on the back of the shell 1, so that the interior of the device can be cleaned when the device is not in use to prevent dust accumulation.
[0032] 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 flue gas recirculation industrial boiler combustion device, comprising a housing (1), characterized in that: The top of the shell (1) is provided with a circulation port (2), and the number of the circulation ports (2) is two; the top of the shell (1) is provided with a turntable groove (3); the top of the shell (1) is provided with a slide groove (4), and the number of the slide grooves (4) is two; the bottom of the inner wall of the slide groove (4) is provided with a connecting groove (5); the bottom of the inner wall of the turntable groove (3) is movably connected with a turntable (6); the inner wall of the turntable (6) is provided with a linkage groove (7), and the number of the linkage grooves (7) is two; a slide plate (8) is installed inside each of the two slide grooves (4); a linkage column (9) is fixedly connected to the bottom of the slide plate (8); the linkage column (9) is located inside the linkage groove (7); the turntable (6) is provided with a linkage column (9) on the inner wall of the turntable (6); The outer wall of the disk (6) is fixedly connected to a rotating rod (10), and a movable groove (11) is provided inside the rotating rod (10). The top of the housing (1) is fixedly connected to a fixed block (12), and there are two fixed blocks (12). The inner wall of the left fixed block (12) is movably connected to a screw rod (13), and the outer wall of the right fixed block (12) is fixedly connected to a motor (14), and the output end of the motor (14) is fixedly connected to the other end of the screw rod (13). The outer wall of the screw rod (13) is threadedly connected to a movable block (15), and the bottom of the movable block (15) is fixedly connected to a movable column (16), and the movable column (16) is located inside the movable groove (11).
2. The reflux flue gas recirculation industrial boiler combustion device according to claim 1 is characterized in that: A return pipe (17) is fixedly connected to the top of the housing (1), and there are two return pipes (17), and the other ends of the two return pipes (17) are both connected to the interior of the housing (1).
3. The reflux flue gas recirculation industrial boiler combustion device according to claim 1 is characterized in that: The two circulation ports (2) are respectively connected to the two slide grooves (4), and the two slide grooves (4) are both connected to the turntable groove (3) through the connecting groove (5).
4. The reflux flue gas recirculation industrial boiler combustion device according to claim 1, characterized in that: An exhaust port (18) is provided at the top of the shell (1), a filter chamber (19) is fixedly connected to the top of the shell (1), the filter chamber (19) is connected to the interior of the shell (1) through the exhaust port (18), a mounting groove (20) is provided inside the filter chamber (19), a filter screen (21) is installed inside the mounting groove (20), and a handle (22) is fixedly connected to the outer wall of the filter screen (21).
5. The reflux flue gas recirculation industrial boiler combustion device according to claim 4, characterized in that: An exhaust pipe (23) is fixedly connected to the top of the filter bin (19), a bin door (24) is installed on the back of the housing (1), and a handle (25) is fixedly connected to the outer wall of the bin door (24).
6. The reflux flue gas recirculation industrial boiler combustion device according to claim 1, characterized in that: An air inlet (26) is fixedly connected to the front of the shell (1), an igniter (27) is fixedly connected to the outer wall of the shell (1), and an ignition end of the igniter (27) is located inside the shell (1).