Low-nitrogen fuel oil burner
By using magnetic suction and speed reduction structures in low-nitrogen fuel burners, the problem of high energy consumption of automatic cleaning in the prior art is solved, reducing the total energy consumption of the burner and reducing wear.
Patent Information
- Application Number
- CN202421297394.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Existing low-nitrogen fuel burners consume more energy when automatically cleaning the dustproof network, resulting in increased burner energy consumption.
By setting an extension shaft, permanent magnet, electromagnet and conductive slip ring in the low nitrogen burner, the drive shaft and cleaning brush rotate using magnetic suction force, combined with the reduction structure of the worm, worm gear and gear, automatic cleaning of the dustproof net is achieved.
Reduces the energy consumption of the burner, avoids the use of additional motors, reduces wear, and effectively avoids dustproof net clogging.
Smart Images
Figure CN222480480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of burners, in particular to a low-nitrogen fuel burner. Background Art
[0002] A burner is a general term for a device that sprays fuel and air in a certain way for mixed combustion. It is mainly divided into pulverized coal burners, oil burners and gas burners. In industrial production, boilers, kilns and other equipment that need to use combustion to generate high temperatures usually use burners. A low-nitrogen burner is a burner with a lower nitrogen oxide content in the exhaust gas after combustion, which can achieve better exhaust emission standards and is more environmentally friendly.
[0003] Existing low-nitrogen fuel burners need to inhale fresh air when working to increase the oxygen content to aid combustion so as to facilitate fuel combustion. When inhaling fresh air, the air is usually filtered through a dust net or filter element to reduce the entry of dust. To avoid clogging of the dust net, the existing technology usually adopts manual cleaning and automatic cleaning. Manual cleaning is more cumbersome and requires staff to use tools to manually clean it regularly, or remove the dust net for cleaning. To improve efficiency, automatic cleaning is gradually used more and more.
[0004] The automatic cleaning method usually uses motors, electric cylinders, air cylinders, hydraulic cylinders and other actuators to drive the cleaning structure to move and automatically clean the dust screen, which increases energy consumption and causes increased energy consumption of the burner. Utility Model Content
[0005] Based on this, the purpose of the present invention is to provide a low-nitrogen fuel burner to solve the technical problems mentioned in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-nitrogen fuel burner, comprising a low-nitrogen burner body and an air inlet, an extension shaft is arranged inside the low-nitrogen burner body, and a permanent magnet is installed inside the extension shaft, the outer surface of the air inlet is connected to a cover plate, and the outer surface of the cover plate is connected to a shell, a conductive slip ring and a transmission shaft are connected inside the shell, and an electromagnet is installed inside the transmission shaft, a first worm is sleeved on the outside of the transmission shaft, a first worm wheel is connected at the lower part of the inside of the shell, and a second worm is connected to one side of the first worm wheel, a gear is connected to one side of the outer surface of the shell, and a second worm wheel is connected to the outer surface of the gear, a gear ring is arranged between the shell and the cover plate, and a cleaning brush is connected to the inner ring of the gear ring.
[0007] By adopting the above technical solution, the extension shaft is connected to the impeller that generates airflow in the low-nitrogen burner body. Therefore, the extension shaft can rotate when the low-nitrogen burner body is working, and there is no need to add an additional motor to reduce energy consumption. When the dust screen needs to be cleaned, the electromagnet is energized, and the magnetic attraction between the electromagnet and the permanent magnet causes the transmission shaft to rotate along with the extension shaft, so that the cleaning brush rotates to clean the dust screen. At the same time, the conductive slip ring is set to prevent the transmission shaft and the electromagnet from rotating and causing the power cord to be broken.
[0008] Furthermore, the permanent magnet and the electromagnet are provided in plurality, and the plurality of permanent magnets and the electromagnets are distributed in a ring array.
[0009] By adopting the above technical solution, the transmission shaft rotates along with the extension shaft through the magnetic attraction between the electromagnet and the permanent magnet. If the electromagnet is turned off, the extension shaft will not drive the transmission shaft to rotate, thereby reducing energy consumption and wear.
[0010] Furthermore, the first worm is meshed with the first worm wheel, the second worm is meshed with the second worm wheel, and the gear is meshed with the gear ring.
[0011] By adopting the above technical scheme, the first worm is engaged with the first worm wheel to perform the first stage of deceleration, the second worm is engaged with the second worm wheel to perform the second stage of deceleration, and the gear is engaged with the gear ring to perform the third stage of deceleration. Firstly, the high-speed rotating impeller can avoid driving the cleaning brush to rotate at high speed, which can cause the cleaning brush to be easily worn. Secondly, the torque is increased so that the cleaning brush has less influence on the motor load. The extension shaft only needs a small force to drive the cleaning brush to rotate, which will not increase the energy consumption of the motor too much.
[0012] Furthermore, the gear ring is rotatably connected to the housing.
[0013] By adopting the above technical solution, the transmission shaft is caused to rotate along with the extension shaft through the magnetic attraction between the electromagnet and the permanent magnet, so that the cleaning brush is caused to rotate to clean the dust screen.
[0014] Furthermore, a combustion port is provided on one side of the low-nitrogen burner body, a motor is installed on the back side of the low-nitrogen burner body, and an air inlet is connected to one side of the outer surface of the low-nitrogen burner body, oil inlet pipes are passed through both sides of the air inlet, and a dust net is installed inside the cover plate.
[0015] By adopting the above technical solution, when the low-nitrogen fuel burner is working, the motor drives the impeller in the main body of the low-nitrogen burner to rotate to generate airflow, so that air is sucked in through the air inlet and ejected from the combustion port. At the same time, the fuel enters through the oil inlet pipe and is mixed with the airflow and ejected together. The fuel and air mixture is ignited in the low-nitrogen fuel burner, so that flames are ejected from the combustion port, so as to heat boilers, kilns and other equipment.
[0016] Furthermore, the cleaning brush is in contact with the dustproof net.
[0017] By adopting the above technical solution, the toothed ring drives the cleaning brush to rotate slowly, so that the cleaning brush rotates to clean the dustproof net, effectively avoiding the dustproof net from being blocked.
[0018] Furthermore, bolts are connected between the cover plate and the air inlet.
[0019] By adopting the above technical solution, the cover plate is limited on the surface of the air inlet by multiple bolts to prevent the cleaning structure from falling off from the air inlet and causing the low-nitrogen burner body to inhale a large amount of dust.
[0020] Furthermore, the cover plate is detachably connected to the air inlet.
[0021] By adopting the above technical solution, the cover plate is disassembled by removing more than half of the bolts, and the cleaning structure can be disassembled and replaced by disassembling the cover plate.
[0022] In summary, the utility model mainly has the following beneficial effects:
[0023] 1. The utility model is provided with a cleaning brush, an extension shaft, a permanent magnet, an electromagnet and a conductive slip ring. The extension shaft is connected to an impeller generating airflow in the main body of the low-nitrogen burner. Therefore, when the main body of the low-nitrogen burner is working, the extension shaft can rotate, and there is no need to add an additional motor to reduce energy consumption. When the dust screen needs to be cleaned, the electromagnet is energized, and the magnetic attraction between the electromagnet and the permanent magnet causes the transmission shaft to rotate along with the extension shaft, so that the cleaning brush rotates to clean the dust screen. At the same time, the conductive slip ring is provided to prevent the transmission shaft and the electromagnet from rotating and causing the power cord to be broken. The power is generated by the work of the main body of the low-nitrogen burner, and there is no need to set up additional electrical appliances. The electromagnet is small in size and low in energy consumption, so it is energy-saving and environmentally friendly.
[0024] 2. The utility model arranges a first worm, a first worm wheel, a second worm, a second worm wheel, a gear and a gear ring. The first worm is engaged with the first worm wheel to perform a first-stage reduction in speed, the second worm is engaged with the second worm wheel to perform a second-stage reduction in speed, and the gear is engaged with the gear ring to perform a third-stage reduction in speed. Firstly, the high-speed rotating impeller is prevented from driving the cleaning brush to rotate at a high speed, which causes easy wear of the cleaning brush. Secondly, the torque is increased so that the cleaning brush has less influence on the motor load. The extension shaft only needs a small force to drive the cleaning brush to rotate, which will not increase the energy consumption of the motor too much. Energy consumption is reduced and wear is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the structure of the utility model;
[0026] Figure 2 It is a schematic diagram of the side cross-section structure of the air inlet of the utility model;
[0027] Figure 3 For the utility model Figure 2 A magnified view of the structure at A;
[0028] Figure 4 This is a schematic diagram of the air inlet structure of the utility model.
[0029] In the figure: 1. low nitrogen burner body; 2. combustion port; 3. motor; 4. air inlet; 5. cover plate; 6. bolts; 7. dust screen; 8. outer casing; 9. cleaning brush; 10. extension shaft; 11. permanent magnet; 12. transmission shaft; 13. electromagnet; 14. first worm; 15. conductive slip ring; 16. first worm wheel; 17. second worm; 18. second worm wheel; 19. gear; 20. gear ring; 21. oil inlet pipe. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0031] The following describes an embodiment of the utility model based on its overall structure. Embodiment 1:
[0032] A low nitrogen fuel burner, such as Figure 1-Figure 4As shown, it includes a low-nitrogen burner body 1 and an air inlet 4, an extension shaft 10 is arranged inside the low-nitrogen burner body 1, a permanent magnet 11 is installed inside the extension shaft 10, a cover plate 5 is connected to the outer surface of the air inlet 4, the outer surface of the cover plate 5 is connected to the outer shell 8, a conductive slip ring 15 and a transmission shaft 12 are connected inside the outer shell 8, an electromagnet 13 is installed inside the transmission shaft 12, a plurality of permanent magnets 11 and electromagnets 13 are arranged, and the plurality of permanent magnets 11 and electromagnets 13 are distributed in a ring array, and the transmission shaft 12 rotates with the extension shaft 10 through the magnetic attraction between the electromagnet 13 and the permanent magnet 11; a first worm 14 is sleeved on the outside of the transmission shaft 12, a first worm wheel 16 is connected to the lower part of the inner shell 8, the first worm 14 is meshed with the first worm wheel 16, and the first worm wheel 16 is meshed with the first worm wheel 16. A second worm 17 is connected to one side of 16, a gear 19 is connected to one side of the outer surface of the outer shell 8, and a second worm wheel 18 is connected to the outer surface of the gear 19, the second worm 17 is meshed with the second worm wheel 18, a gear ring 20 is arranged between the outer shell 8 and the cover plate 5, the gear 19 is meshed with the gear ring 20, the gear ring 20 is rotatably connected to the outer shell 8, the extension shaft 10 drives the first worm 14 to rotate, and the first worm 14 is meshed with the first worm wheel 16 for a first reduction in speed, and the second worm 17 is meshed with the second worm wheel 18 for a second reduction in speed, and then the gear 19 is meshed with the gear ring 20 for a third reduction in speed, so that the gear ring 20 drives the cleaning brush 9 to rotate slowly; the cleaning brush 9 is connected to the inner ring of the gear ring 20, the cleaning brush 9 is in contact with the dustproof net 7, and the cleaning brush 9 rotates to clean the dustproof net 7.
[0033] See also Figure 1 , Figure 2 and Figure 4 In the above embodiment, a combustion port 2 is provided on one side of the low-nitrogen burner body 1, a motor 3 is installed on the back side of the low-nitrogen burner body 1, an air inlet 4 is connected to one side of the outer surface of the low-nitrogen burner body 1, and an oil inlet pipe 21 is penetrated on both sides of the air inlet 4. A dustproof net 7 is installed inside the cover plate 5. When the low-nitrogen fuel burner is working, the motor 3 drives the impeller in the low-nitrogen burner body 1 to rotate to generate airflow, so that the air inlet 4 inhales air and sprays out from the combustion port 2. At the same time, the fuel enters through the oil inlet pipe 21 and is mixed with the airflow and sprayed out together. The fuel and air mixture is ignited in the low-nitrogen fuel burner, so that the combustion port 2 sprays flames, so as to heat boilers, kilns and other equipment. Embodiment 2:
[0034] On the basis of the above-mentioned embodiment 1, it is convenient to inspect and replace the damaged cleaning structure.
[0035] See also Figure 1 , Figure 2 and Figure 4 In the above embodiment, bolts 6 are connected between the cover plate 5 and the air inlet 4, and the cover plate 5 and the air inlet 4 are detachably connected. By removing the cover plate 5, the cleaning structure can be removed together for replacement.
[0036] The implementation principle of the utility model is as follows: first, when the low-nitrogen fuel burner is working, the motor 3 drives the impeller in the low-nitrogen burner body 1 to rotate and generate airflow, so that the air inlet 4 inhales air and sprays it out from the combustion port 2, and at the same time, the fuel enters through the fuel inlet pipe 21 and is mixed with the airflow and sprayed out together, and the fuel and air mixture is ignited in the low-nitrogen fuel burner, so that the combustion port 2 sprays flames, so as to heat the boiler, kiln and other equipment;
[0037] The extension shaft 10 is connected to the impeller that generates airflow in the low-nitrogen burner body 1, so the extension shaft 10 can rotate when the low-nitrogen burner body 1 is working. When the dust screen 7 needs to be cleaned, the staff turns on the electromagnet 13. At this time, the magnetic attraction between the electromagnet 13 and the permanent magnet 11 causes the transmission shaft 12 to rotate along with the extension shaft 10. The extension shaft 10 drives the first worm 14 to rotate, and the first worm 14 is meshed with the first worm wheel 16 to perform a first-stage reduction, and the second worm 17 is meshed with the second worm wheel 18 to perform a second-stage reduction, and then the gear 19 is meshed with the gear ring 20 to perform a third-stage reduction, so that the gear ring 20 drives the cleaning brush 9 to rotate slowly, so that the cleaning brush 9 rotates to clean the dust screen 7. At the same time, the conductive slip ring 15 is set to prevent the transmission shaft 12 and the electromagnet 13 from rotating and causing the power cord to be twisted off.
[0038] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A low-nitrogen fuel burner, comprising a low-nitrogen burner body (1) and an air inlet (4), characterized in that: An extension shaft (10) is arranged inside the low-nitrogen burner body (1), and a permanent magnet (11) is installed inside the extension shaft (10); the outer surface of the air inlet (4) is connected to a cover plate (5), and the outer surface of the cover plate (5) is connected to a housing (8); the housing (8) is connected to a conductive slip ring (15) and a transmission shaft (12), and an electromagnet (13) is installed inside the transmission shaft (12); a first worm (14) is sleeved on the outside of the transmission shaft (12); a first worm gear (16) is connected at the bottom of the housing (8), and a second worm gear (17) is connected to one side of the first worm gear (16); a gear (19) is connected to one side of the outer surface of the housing (8), and a second worm gear (18) is connected to the outer surface of the gear (19); a gear ring (20) is arranged between the housing (8) and the cover plate (5), and a cleaning brush (9) is connected to the inner ring of the gear ring (20).
2. The low nitrogen fuel burner according to claim 1 is characterized in that: A plurality of the permanent magnets (11) and electromagnets (13) are provided, and the plurality of permanent magnets (11) and electromagnets (13) are distributed in a ring array.
3. The low nitrogen fuel burner according to claim 1 is characterized in that: The first worm (14) meshes with the first worm wheel (16), the second worm (17) meshes with the second worm wheel (18), and the gear (19) meshes with the gear ring (20).
4. The low nitrogen fuel burner according to claim 3 is characterized in that: The gear ring (20) is rotatably connected to the housing (8).
5. The low nitrogen fuel burner according to claim 1 is characterized in that: A combustion port (2) is provided on one side of the low-nitrogen burner body (1), a motor (3) is installed on the back side of the low-nitrogen burner body (1), and an air inlet (4) is connected to one side of the outer surface of the low-nitrogen burner body (1), oil inlet pipes (21) are passed through both sides of the air inlet (4), and a dustproof net (7) is installed inside the cover plate (5).
6. The low nitrogen fuel burner according to claim 5, characterized in that: The cleaning brush (9) is in contact with the dustproof net (7).
7. The low nitrogen fuel burner according to claim 5, characterized in that: Bolts (6) are connected between the cover plate (5) and the air inlet (4).
8. The low nitrogen fuel burner according to claim 7 is characterized in that: The cover plate (5) is detachably connected to the air inlet (4).