A fuel oil burner for an incinerator

Abstract

The present invention is a fuel burner for an incinerator, comprising a burner housing, a flame tube, an oil gun assembly, an ignition needle assembly, a diffusion disk, a damper adjustment mechanism, an oil circuit module, and an ignition transformer. A cooling air inlet that can be opened and closed is provided on one side of the front end of the burner housing. The diffusion disk is fixedly mounted at the front end of the oil gun assembly to form a whole with the oil gun assembly. The fuel burner also comprises an oil gun assembly advance and retreat drive mechanism, which is connected to the oil gun assembly to drive the oil gun assembly to advance and retreat as a whole, thereby driving the diffusion disk to move between the flame tube and the cooling air inlet. The beneficial effect is: effectively solving the problem of the oil nozzle on the oil gun assembly being easy to coke and the diffusion disk being easy to burn in the prior art, thereby ensuring the service life of the fuel burner and saving costs for the enterprise.

Description

Technical Field

[0001] The invention relates to the technical field of burners, in particular to a fuel burner used in an incinerator. Background Art

[0002] With the implementation of the new national standard for waste incineration emissions and the strong support of national policies, the fuel burners of incinerators have developed rapidly, and the combustion technology has been gradually improved and enriched. However, the current waste incinerator burners mainly use imported starting and auxiliary burners of internationally renowned brands. Imported burners are relatively expensive and do not conform to the actual domestic situation. The ignition failure rate is high. Moreover, when the temperature in the combustion chamber reaches 850-1100℃, the starting burner stops working and the auxiliary burner continues to work to maintain the temperature in the furnace. During this period, the oil nozzle on the starting burner oil gun assembly is prone to coking and clogging, and the diffusion disc assembly is covered with garbage and easily burned; the maintenance cost is high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an incinerator oil burner with a simple structure and a long service life.

[0004] The technical solution is as follows:

[0005] A fuel burner for an incinerator, comprising a burner housing, a flame tube, an oil gun assembly, an ignition needle assembly, a diffusion disk, a damper adjustment mechanism, an oil circuit module, and an ignition transformer, wherein the flame tube is arranged at the front end of the burner housing, the diffusion disk is arranged in the flame tube, the oil gun assembly is arranged at the center of the inner cavity of the burner housing, and its front end extends to the diffusion disk, the ignition needle assembly is mounted on the oil gun assembly, and its front end extends to the diffusion disk, the damper adjustment mechanism is arranged at the bottom of the inner cavity of the burner housing, the oil circuit module and the ignition transformer are both fixedly arranged on the outer side of the burner housing, the oil circuit module is connected to the end of the oil gun assembly through a high-pressure hose, and the ignition needle assembly is connected to the end of the oil gun assembly through a high-pressure hose. An over-high voltage wire is connected to the ignition transformer, and is characterized in that a cooling air inlet that can be opened and closed is provided on one side of the front end of the burner housing, the diffusion disk is fixedly mounted at the front end of the oil gun assembly to form a whole with the oil gun assembly, and the oil burner also includes an oil gun assembly advance and retreat drive mechanism, the oil gun assembly advance and retreat drive mechanism is connected to the oil gun assembly to drive the oil gun assembly to advance and retreat as a whole, thereby driving the diffusion disk to move between the flame tube and the cooling air inlet, so as to solve the problems of coking of the oil nozzle on the oil gun assembly and easy burning of the diffusion disk, and when the burner is shut down, the oil gun assembly is driven by the oil gun assembly advance and retreat drive mechanism to retreat as a whole, and the diffusion disk retreats to the cooling air inlet, and the cooling air enters to blow and cool the diffusion disk and the oil nozzle on the oil gun assembly.

[0006] As a further improvement, the advance and retreat drive mechanism of the oil gun assembly includes two cylinders and a cylinder push plate. The two cylinders are respectively installed on both sides of the burner housing, and the cylinder push plate is installed at the end of the oil gun assembly. The output ends of the two cylinders are respectively connected to the two ends of the cylinder push plate. The cylinder drives the cylinder push plate to rotate, thereby rotating the oil gun assembly forward or backward. It has a simple structure and is easy to operate.

[0007] As a further improvement, a cooling air inlet is arranged at an inclination backward on the cooling air inlet, and a cooling air butterfly valve for opening and closing the cooling air inlet is arranged on the tube mouth of the cooling air inlet tube. Since the temperature of the front end of the burner is very high during operation, the cooling air inlet is arranged backward through the cooling air inlet tube to exclude the hot air from the front end of the burner and ensure that the cooling air inlet is filled with cold air. At the same time, in order to facilitate the opening and closing of the cooling air inlet, the cooling air butterfly valve arranged on the tube mouth of the cooling air inlet tube not only has a good sealing effect, but can also be opened to a maximum position of 90° when opened, so as to ensure that a large amount of cooling air is quickly supplied.

[0008] As a further improvement, a rear cover plate is provided at the rear end of the burner housing, the oil gun assembly passes through the rear cover plate and extends into the inner cavity of the burner housing, and the oil gun assembly is mounted in the inner cavity of the burner housing through an oil gun support seat, which is convenient for disassembly and installation.

[0009] As a further improvement, the damper adjustment mechanism includes a damper shaft, a damper plate, a servo adjustment motor and a wind pressure switch, at least two of the damper shafts are horizontally installed on the burner housing, the damper plate is fixed on the damper shaft, the damper switch and the servo adjustment motor are both arranged on the outer side of the burner housing, and the servo adjustment motor is connected to the damper shaft through a coupling to drive the damper shaft to rotate, thereby driving the damper to open and close.

[0010] As a further improvement, the oil burner also includes a flame detector, which is fixed to the burner housing through a flame detector cooling mounting seat, is illuminated with heat-insulating glass, is mounted on the flame detector cooling mounting seat with a threaded joint, is mounted on the threaded joint with a copper ball valve, and is mounted on the copper ball valve with a quick plug for users to quickly install a plastic hose to introduce compressed air on site. This effectively solves the problem that the flame detector is easily burned by the radiant heat from the furnace when the burner stops working, and the heat-insulating glass well blocks the heat radiation outside to ensure the service life of the flame detector.

[0011] As a further improvement, in order to facilitate disassembly during equipment maintenance, a visual window is opened on the top of the burner shell, an upper cover plate is provided on the visual window, and a handle is provided on the upper cover plate.

[0012] Beneficial Effects

[0013] The beneficial effect is as follows: the present invention drives the oil gun assembly to retract as a whole through the advance and retreat drive mechanism of the oil gun assembly, and the diffusion disk retracts to the cooling air inlet. The cooling air enters and blows and cools the diffusion disk and the oil nozzle on the oil gun assembly, which effectively solves the problem of easy coking of the oil nozzle on the oil gun assembly and easy burning of the diffusion disk in the prior art, thereby ensuring the service life of the fuel burner and saving costs for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below with reference to the accompanying drawings and implementation examples.

[0015] Figure 1 It is the overall structural front view of the present invention;

[0016] Figure 2 The cross-sectional view of the internal structure of the present invention Figure 1 ;

[0017] Figure 3 The cross-sectional view of the internal structure of the present invention Figure 2 ;

[0018] Figure 4 It is a bottom view of the overall structure of the present invention;

[0019] Figure 5 This is an assembly diagram of the oil gun assembly and the diffusion plate of the present invention.

[0020] Numbers in the figure:

[0021] 1. Burner housing 2. Flame tube 3. Oil gun assembly

[0022] 4. Ignition needle assembly 5. Diffuser plate 6. Air door adjustment mechanism

[0023] 7. Oil circuit module 8. Ignition transformer 9. Oil gun assembly forward and backward drive mechanism

[0024] 10. Cooling air inlet 11. Cooling air inlet tube 12. Cooling air butterfly valve

[0025] 13. Rear cover 14. Oil gun support bracket 15. Flame detector

[0026] 16. Fire detection cooling mount 17. Threaded joint 18. Copper ball valve

[0027] 19. Quick plug 20. Upper cover 21. Handle

[0028] 61. Damper shaft 62. Damper plate 63. Servo adjustment motor

[0029] 64, air pressure switch 91, cylinder 92, cylinder

[0030] 93. Cylinder push plate DETAILED DESCRIPTION

[0031] In order to have a further understanding and recognition of the structural features and the effects achieved by the present invention, a preferred embodiment and accompanying drawings are used for detailed description as follows:

[0032] like Figure 1-5 As shown, a fuel burner for an incinerator comprises a burner housing 1, a flame tube 2, an oil gun assembly 3, an ignition needle assembly 4, a diffusion plate 5, a damper adjustment mechanism 6, an oil circuit module 7, and an ignition transformer 8. The flame tube 2 is arranged at the front end of the burner housing 1, the diffusion plate 5 is arranged in the flame tube 2, the oil gun assembly 3 is arranged at the center of the inner cavity of the burner housing 1, and its front end extends to the diffusion plate 5. The ignition needle assembly 4 is installed on the oil gun assembly 3, and its front end extends to the diffusion plate 5. The damper adjustment mechanism 6 is arranged at the bottom of the inner cavity of the burner housing 1. The oil circuit module 7 and the ignition transformer 8 are both fixedly arranged on the outer side of the burner housing 1. The oil circuit module 7 is connected to the end of the oil gun assembly 3 through a high-pressure hose. The ignition needle assembly 4 is connected to the end of the oil gun assembly 3 through a high-pressure hose. The wire is connected to the ignition transformer 8, and a cooling air inlet 10 that can be opened and closed is provided on one side of the front end of the burner housing 1. The diffusion disk 5 is fixedly installed at the front end of the oil gun assembly 3 to form a whole with the oil gun assembly 3. The oil burner also includes an oil gun assembly advance and retreat drive mechanism 9. The oil gun assembly advance and retreat drive mechanism 9 is connected to the oil gun assembly 3 to drive the oil gun assembly 3 to advance and retreat as a whole, thereby driving the diffusion disk 5 to move between the flame tube 2 and the cooling air inlet 10, so as to solve the problem of coking of the oil nozzle on the oil gun assembly 3 and the diffusion disk 5 being easily burned. When the burner is shut down, the oil gun assembly 3 is driven to retreat as a whole by the oil gun assembly advance and retreat drive mechanism 9, and the diffusion disk 5 retreats to the cooling air inlet 10. The cooling air enters and blows and cools the oil nozzle on the diffusion disk 5 and the oil gun assembly 3.

[0033] The oil gun assembly advance and retreat drive mechanism 9 includes two cylinders 91, 92 and a cylinder push plate 93. The two cylinders are respectively installed on both sides of the burner housing 1. The cylinder push plate 93 is installed at the end of the oil gun assembly 3. The output ends of the two cylinders are respectively connected to the two ends of the cylinder push plate 93. The cylinder drives the cylinder push plate to rotate, thereby rotating the oil gun assembly in or out. It has a simple structure and is easy to operate.

[0034] A cooling air inlet tube 11 is arranged at a rearward tilt on the cooling air inlet 10, and a cooling air butterfly valve 12 for opening and closing the cooling air inlet is arranged at the tube mouth of the cooling air inlet tube 11. Since the temperature of the front end of the burner is very high during operation, the cooling air inlet is arranged backward through the cooling air inlet tube to exclude the hot air from the front end of the burner and ensure that the cooling air inlet is cold air. At the same time, in order to facilitate the opening and closing of the cooling air inlet, the cooling air butterfly valve arranged on the tube mouth of the cooling air inlet tube not only has a good sealing effect, but can also be opened to a maximum position of 90° when opened, so as to ensure a large amount of cooling air is quickly delivered.

[0035] The rear end of the burner housing 1 is provided with a rear cover plate 13, the oil gun assembly 3 passes through the rear cover plate 13 and extends into the inner cavity of the burner housing 1, and the oil gun assembly 3 is arranged in the inner cavity of the burner housing 1 through the oil gun support bracket 14. It is convenient for disassembly and installation.

[0036] The damper adjustment mechanism 6 includes a damper shaft 61, a damper plate 62, a servo adjustment motor 63 and a wind pressure switch 64. At least two damper shafts 61 are horizontally installed on the burner housing 1. The damper plate 62 is fixed on the damper shaft. The damper switch 64 and the servo adjustment motor 63 are both arranged on the outer surface of the burner housing 1. The servo adjustment motor 63 is connected to the damper shaft 61 through a coupling to drive the damper shaft to rotate, thereby driving the damper to open and close.

[0037] The oil burner also includes a flame detector 15, which is fixed to the burner housing 1 through a flame detector cooling mounting seat 16, on which a heat-insulating glass is irradiated, on which a threaded joint 17 is mounted, on which a copper ball valve 18 is mounted, and on which a quick plug 19 for users on site to quickly install a plastic hose to introduce compressed air is mounted. This effectively solves the problem that the flame detector is easily burned by the radiant heat from the furnace when the burner stops working, and the heat-insulating glass well blocks the heat radiation outside to ensure the service life of the flame detector.

[0038] In order to facilitate disassembly during equipment maintenance, a visual window is provided on the top of the burner housing 1 , an upper cover plate 20 is provided on the visual window, and a handle 21 is provided on the upper cover plate 20 .

[0039] Before the oil burner works, the oil pump group is first controlled to control the oil pressure at the outlet of the oil pump at about 0.8-1.2MPa through the action of the pressure regulating valve, and the stable oil pressure is delivered to the burner. At this time, the oil burner is started, and under the action of cylinders 91 and 92, the oil gun assembly 3 and the diffusion plate 5 are pushed to the front end of the oil burner as a whole, and then the boiler operation condition verification → large air door furnace purge → air door runs to the ignition position → ignition transformer works → fuel solenoid valve runs → flame verification (ignition transformer stops) → flame establishment is confirmed → start the main fuel solenoid valve → establish the main fire flame → fuel load adjustment → normal shutdown → air furnace post purge. In the burner part, through the action of the flow control valve, the fuel can be continuously delivered to the nozzle from small to large to achieve the proportion of combustion adjustment. The flow control valve is driven by an independent servo motor, and the air door adjustment mechanism is driven by an independent servo motor. The two servo motors are automatically adjusted by the PLC to achieve the air-oil ratio.

[0040] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications to the shapes, structures, features and spirits described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fuel burner for an incinerator, comprising a burner housing, a flame tube, an oil gun assembly, an ignition needle assembly, a diffusion disk, a damper adjustment mechanism, an oil circuit module, and an ignition transformer, wherein the flame tube is arranged at the front end of the burner housing, the diffusion disk is arranged in the flame tube, the oil gun assembly is arranged at the center of the inner cavity of the burner housing, and its front end extends to the diffusion disk, the ignition needle assembly is mounted on the oil gun assembly, and its front end extends to the diffusion disk, the damper adjustment mechanism is arranged at the bottom of the inner cavity of the burner housing, the oil circuit module and the ignition transformer are both fixedly arranged on the outer side of the burner housing, the oil circuit module is connected to the end of the oil gun assembly through a high-pressure hose, and the ignition needle assembly is connected to the ignition transformer through a high-voltage wire, characterized in that A cooling air inlet that can be opened and closed is provided on one side of the front end of the burner shell, the diffusion disk is fixedly mounted at the front end of the oil gun assembly to form a whole with the oil gun assembly, the oil burner also includes an oil gun assembly advance and retreat drive mechanism, the oil gun assembly advance and retreat drive mechanism is connected to the oil gun assembly to drive the oil gun assembly as a whole to advance and retreat, and then drive the diffusion disk to move between the flame tube and the cooling air inlet, the oil gun assembly advance and retreat drive mechanism includes two cylinders and a cylinder push plate, the two cylinders are respectively mounted on both sides of the burner shell, the cylinder push plate is mounted at the end of the oil gun assembly, the output ends of the two cylinders are respectively connected to the two ends of the cylinder push plate, a cooling air inlet cylinder is arranged on the cooling air inlet tilted backward, and a cooling air butterfly valve for opening and closing the cooling air inlet is provided on the tube mouth of the cooling air inlet cylinder.

2. The oil burner for an incinerator according to claim 1, characterized in that: A rear cover plate is provided at the rear end of the burner housing, and the oil gun assembly passes through the rear cover plate and extends into the inner cavity of the burner housing. The oil gun assembly is mounted in the inner cavity of the burner housing through an oil gun support seat.

3. The oil burner for an incinerator according to claim 1, characterized in that: The damper adjustment mechanism includes a damper shaft, a damper plate, a servo adjustment motor and a wind pressure switch. At least two damper shafts are horizontally installed on the burner housing. The damper plate is fixed on the damper shaft. The damper switch and the servo adjustment motor are both arranged on the outer side of the burner housing. The servo adjustment motor is connected to the damper shaft through a coupling to drive the damper shaft to rotate.

4. The oil burner for an incinerator according to claim 1, characterized in that: The oil burner also includes a flame detector, which is fixed to the burner housing through a flame detection cooling mounting seat, and is illuminated with heat-insulating glass. A threaded joint is installed on the fire detection cooling mounting seat, and a copper ball valve is installed on the threaded joint. A quick plug for users on site to quickly install a plastic hose to introduce compressed air is installed on the copper ball valve.

5. The oil burner for an incinerator according to claim 1, characterized in that: A visual window is provided on the top of the burner shell, an upper cover plate is provided on the visual window, and a handle is provided on the upper cover plate.

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