An ultra-low nitrogen oil-gas dual-purpose burner

Abstract

The application relates to an ultra-low-nitrogen oil-gas dual-purpose burner and belongs to the technical field of burners. The burner comprises a support plate and a shell fixed on the support plate, an oil supply pipe, an air supply pipe and a blower assembly are arranged in the shell, one end of the oil supply pipe is provided with a first control valve, and the air supply pipe is provided with a second control valve; a fixing sleeve is fixed on the side of the shell, a rotational flow disc and an ignition assembly are fixed in the fixing sleeve; an oil outlet pipe, an oil return pipe and a plurality of air outlet pipes are further fixed in the fixing sleeve; in the application, the burner fully utilizes the jet flow kinetic energy of fuel, the wind speed kinetic energy and the flame kinetic energy, and combines the internal air duct arrangement of a special combustion head and the fuel lance arrangement, so that flue gas recirculation can also be carried out in the combustion head, the energy density of fuel and the oxygen density of combustion air can be reduced, external flue gas extraction from the rear part of a boiler is replaced, and the NOx emission can directly reach less than 30 or 50 mg / m3.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of burners, in particular to an ultra-low-nitrogen oil-gas dual-purpose burner. BACKGROUND

[0002] A boiler burner, as a core supporting device of a fuel oil and gas boiler, plays a key role in converting chemical energy of fuel into heat energy. It realizes efficient and sufficient combustion of fuel by accurately regulating the amount of air and fuel sent into the furnace, thereby significantly improving the combustion efficiency. This conversion process not only relies on the coordinated work of complex and delicate components inside the burner, but also requires these components to be adaptable to multiple fuel types to meet the needs of different application scenarios.

[0003] In the prior art, an advanced burner design covers multiple key parts such as a fuel supply assembly, an air supply assembly, an ignition assembly, and an electronic control assembly. The fuel supply assembly ensures the stable supply of fuel required for combustion, whether it is an oil pipe, an oil pump, an electromagnetic valve, a nozzle, or a heavy oil preheater, each of which performs its own function to provide the necessary material basis for the combustion process. The air supply assembly sends air with a certain wind speed and volume into the combustion chamber through a series of precise components such as a housing, a fan motor, and a fan impeller, providing power for the sufficient mixing of fuel and air. The ignition assembly uses components such as an ignition transformer and an ignition electrode to accurately ignite the mixture of fuel and air, starting the combustion process.

[0004] However, despite the fact that this burner is quite perfect in design and function, it still has certain limitations. Specifically, the existing burner can usually only supply fuel oil or natural gas separately, and cannot simultaneously support both fuels. This limitation undoubtedly limits the application range of the burner, making it unsuitable for some scenarios that require flexible switching between fuel types, and there is room for improvement. SUMMARY

[0005] The purpose of the present application is to provide an ultra-low-nitrogen oil-gas dual-purpose burner to solve the problem that the conventional burner cannot support both fuel oil and natural gas.

[0006] The ultra-low-nitrogen oil-gas dual-purpose burner provided by the present application adopts the following technical solution:

[0007] The utility model provides an ultra -low nitrogen oil gas dual -purpose burner, including the support board and the casing of being fixed on the support board, be equipped with oil supply pipe, gas supply pipe and blast assembly in the casing, one end of oil supply pipe is equipped with the first control valve, be equipped with the second control valve on gas supply pipe, the side of casing is fixed with fixed sleeve, the inside of fixed sleeve is fixed with whirl disc and ignition assembly, still be equipped with oil outlet pipe, oil return pipe and a plurality of gas outlet pipes in fixed sleeve, oil outlet pipe and oil return pipe are close to the end of casing and are connected with oil supply pipe, a plurality of gas outlet pipes are close to the end of casing and are connected with gas supply pipe, the whirl disc is equipped with the oil outlet hole of being connected with the other end of oil outlet pipe, the oil return hole of being connected with the other end of oil return pipe, still be equipped with the oil nozzle of being connected with oil outlet hole and oil return hole in whirl disc.

[0008] By adopting the above technical scheme, when the burner supplies fuel oil for application, the external pipeline is connected with the oil supply pipe in advance, then the supply amount of oil is controlled through the first control valve, and then the oil enters the combustion chamber of the boiler through the oil supply pipe and the oil outlet pipe; when the burner supplies fuel gas for application, the external pipeline is connected with the gas supply pipe in advance, then the supply amount of fuel gas is controlled through the second control valve, and then the fuel gas enters the combustion chamber of the boiler through the gas supply pipe and the gas outlet pipe; the burner can use both fuel oil and fuel gas, has a wider application range, and has good use performance.

[0009] Optionally, the lower portion of the support plate is provided with a base plate, the support plate is fixed on the base plate, a plurality of rollers are arranged on the bottom side of the base plate, and traction handles are arranged on the opposite edges of the upper side of the base plate.

[0010] By adopting the above technical scheme, when the burner needs to be moved for a short distance, the burner is placed on the ground by the worker in advance, the rollers are in abutment with the ground, and then the worker can drag the burner on the base plate through the traction handles.

[0011] Optionally, the bottom side of the base plate is provided with a receiving groove for accommodating the rollers, the upper portion of the base plate is provided with a fixing rod, the lower end of the fixing rod is rotatably connected with the rollers, the bottom side of the receiving groove is provided with an adjusting through hole for allowing the upper end of the fixing rod to penetrate, and an adjusting member is arranged on the base plate to control the up-down sliding of the fixing rod; the two traction handles are symmetrically arranged on the two side surfaces of the casing, the traction handles are rotatably connected with the upper side of the base plate, the traction handles can be rotationally adjusted and fixed, and the traction handles can control the adjusting member to drive the fixing rod to slide up and down when the traction handles are rotated.

[0012] By adopting the technical scheme, when the traction handle is rotated for adjustment, the fixed rod can slide up and down by the control member, and the roller can be put into or taken out of the accommodating groove, so that the state of the roller can be adjusted according to actual conditions, and the traction handle is suitable for short-distance movement or fixation of the burner.

[0013] Optionally, the upper side of the base plate is fixed with a hinge seat hinged with the lower end of the traction handle, a plurality of locking screw holes are formed in the hinge seat, a locking through hole capable of coinciding with the locking screw holes is formed in the traction handle, and a locking bolt is arranged above the base plate and penetrates through the locking through hole and is screwed into the locking screw hole.

[0014] By adopting the technical scheme, when the traction handle is rotated to a certain state, the locking through hole of the state coincides with the corresponding locking screw hole, and then the locking bolt is penetrated through the locking screw hole and screwed into the locking through hole, so that the rotation adjustment of the traction handle is realized.

[0015] Optionally, the upper end of the fixed rod is provided with a guide slope, the adjustment member comprises a first adjustment rod sliding on the base plate and a second adjustment rod hinged with one end of the traction handle, and the end of the first adjustment rod close to the traction handle is hinged with the other end of the second adjustment rod.

[0016] By adopting the technical scheme, when the traction handle is rotated, the first adjustment rod reciprocatingly slides by the second adjustment rod, and the end of the first adjustment rod away from the traction handle is pressed downward to the fixed rod along the guide slope, so that the adjustment of the fixed rod sliding up and down is realized.

[0017] Optionally, the outer periphery of the fixed rod is fixed with a baffle, the upper side opening of the adjustment through hole is provided with an adjustment groove for placing the baffle, a compression spring is arranged in the adjustment groove, and the two ends of the compression spring are fixedly connected with the bottom side of the adjustment groove and the lower side of the baffle, respectively.

[0018] By adopting the technical scheme, when the first adjustment rod is dislocated with the upper end surface of the fixed rod, and the burner is hoisted by using the hoisting arrangement in this state, the possibility of the roller being taken out of the accommodating groove in the natural state is reduced due to the combination of the baffle and the compression spring.

[0019] Optionally, the side surface of the support plate is provided with a locking slot for sliding and clamping the end of the first adjustment rod.

[0020] By adopting the above technical scheme, when the burner needs to be hoisted, the pulling handle is adjusted to a vertical state, the first adjusting rod lower side surface abuts against the fixed rod upper end surface, in this state, the first adjusting rod end portion is synchronously inserted into the locking slot, the assembly stability of the burner and the base plate during hoisting is improved; when the burner is applied, the pulling handle is adjusted to a 45-degree oblique upward state, in this state, the first adjusting rod end portion is detached from the locking slot.

[0021] Optionally, a lifting handle is fixedly arranged on the upper side of the shell, two protective curtains are symmetrically arranged above the base plate, one side of the protective curtain is detachably connected with the pulling handle, and the other side is detachably connected with the lifting handle.

[0022] By adopting the above technical scheme, when the burner is applied, the protective curtain can be installed and arranged to shield the upper side of the burner, thereby reducing the problem that impurities attached to the burner shell surface during boiler combustion affect the use performance of the burner.

[0023] Optionally, a receiving cavity is formed in the side of the shell facing the pulling handle, one side of the protective curtain close to the pulling handle is fixedly arranged on the inner wall of the receiving cavity; a limiting groove is formed in the opening edge of the receiving cavity, a cover plate is arranged on the pulling handle and hinged to one side of the pulling handle, and the other side of the cover plate is detachably connected with the inner wall of the limiting groove.

[0024] By adopting the above technical scheme, when the protective curtain does not need to be protected during transportation or short-distance movement, the protective curtain can be received in the receiving cavity on the pulling handle due to the combined arrangement of the receiving cavity and the cover plate, so as to facilitate packaging, transportation or short-distance movement.

[0025] Optionally, a plurality of hooks are fixedly arranged on the side of the shell facing the protective curtain, and a hanging ring for the hooks to be clamped into is fixedly arranged on the lifting handle.

[0026] By adopting the above technical scheme, when one side of the protective curtain is assembled with the lifting handle, the hooks on the protective curtain are clamped into the hanging ring on the lifting handle, and the protective curtain is also convenient to disassemble subsequently.

[0027] In summary, the present application has the following beneficial technical effects:

[0028] 1. In the application of the burner supplying fuel oil, the external pipeline is connected with the fuel oil supply pipe in advance, then the fuel oil supply amount is controlled through the first control valve, and then enters the combustion chamber of the boiler through the fuel oil supply pipe and the fuel oil outlet pipe; in the application of the burner supplying fuel gas, the external pipeline is connected with the fuel gas supply pipe in advance, then the fuel gas supply amount is controlled through the second control valve, and then enters the combustion chamber of the boiler through the fuel gas supply pipe and the fuel gas outlet pipe; the burner can use both fuel oil and fuel gas, has a wider application range, and has good use performance.

[0029] 2. The burner fully utilizes the jet flow energy of fuel, the wind speed kinetic energy, and the flame kinetic energy, combines the internal air duct arrangement of the special combustion head and the fuel lance arrangement, so that flue gas recirculation can also be carried out in the combustion head, thereby reducing the energy density of the fuel and the oxygen density of the combustion air, thereby replacing the external flue gas extraction from the rear part of the boiler, and the NOx emission can directly reach less than 30 or 50 mg / m3. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0032] Figure 2 is a schematic diagram of the partial cross-sectional structure of embodiment 1 of the present application;

[0033] Figure 3 is a schematic diagram of the structure embodying the installation cooperation of the roller of embodiment 2 of the present application;

[0034] Figure 4 is a schematic diagram of the structure embodying the installation cooperation of the traction handle of embodiment 2 of the present application;

[0035] Figure 5 is a schematic diagram of the structure embodying the installation cooperation of the adjusting member of embodiment 2 of the present application;

[0036] Figure 6 is a schematic diagram of the partial cross-sectional structure embodying the installation cooperation of the traction handle and the hinged seat of embodiment 2 of the present application;

[0037] Figure 7 is a schematic diagram of the structure embodying the installation cooperation of the roller and the fixed rod of embodiment 2 of the present application;

[0038] Figure 8is a structure diagram of the protective curtain mounting cooperation of embodiment 2 of the present application;

[0039] Figure 9 is Figure 8 is an enlarged schematic view of part A in figure;

[0040] Figure 10 is a partial structure diagram of the cover plate mounting cooperation of embodiment 2 of the present application.

[0041] In the figure, 1, support plate; 11, locking slot; 2, housing; 21, oil supply pipe; 211, first control valve; 22, gas supply pipe; 221, second control valve; 23, air blowing assembly; 24, lifting handle; 241, hanging ring; 3, fixed sleeve; 31, cyclone disc; 311, oil nozzle; 32, ignition assembly; 321, igniter; 33, oil outlet pipe; 34, oil return pipe; 35, gas outlet pipe; 4, base plate; 41, containing groove; 411, adjusting through hole; 412, adjusting sink; 42, hinged seat; 421, locking screw hole; 43, locking bolt; 5, moving assembly; 51, roller; 52, traction handle; 521, locking through hole; 522, storage cavity; 523, limiting sink; 53, fixed rod; 531, guide inclined surface; 532, baffle; 533, compression spring; 54, adjusting piece; 541, first adjusting rod; 542, second adjusting rod; 55, cover plate; 6, protective curtain; 61, hook. DETAILED DESCRIPTION

[0042] The present application is further described in detail below with reference to all the accompanying drawings.

[0043] Embodiment 1:

[0044] Referring to Figure 1 and Figure 2 , an ultra-low nitrogen oil and gas dual-purpose burner includes a support plate 1 and a housing 2 fixedly arranged on the support plate 1, wherein the housing 2 is provided with an oil supply pipe 21, a gas supply pipe 22 and an air blowing assembly 23, one end of the oil supply pipe 21 is provided with a first control valve 211, and the gas supply pipe 22 is provided with a second control valve 221; a fixed sleeve 3 is fixedly arranged on the side of the housing 2, and the inside of the fixed sleeve 3 is fixedly arranged with a cyclone disc 31 and an ignition assembly 32;

[0045] The fixed sleeve 3 is further fixedly arranged with an oil outlet pipe 33, an oil return pipe 34 and six gas outlet pipes 35, wherein the oil outlet pipe 33 and the oil return pipe 34 are in communication with the oil supply pipe 21 near the end of the housing 2, and four gas outlet pipes 35 are in communication with the gas supply pipe 22 near the end of the housing 2; the cyclone disc 31 is provided with an oil outlet hole (not shown in the figure) in communication with the other end of the oil outlet pipe 33 and an oil return hole (not shown in the figure) in communication with the other end of the oil return pipe 34, and the cyclone disc 31 is further fixedly arranged with an oil nozzle 311 in communication with the oil outlet hole (not shown in the figure) and the oil return hole (not shown in the figure).

[0046] Referring to Figure 1 , the air blowing assembly 23 is a conventional electrically driven fan, which will not be described here. The second control valve 221 is a gas solenoid valve, which mainly controls gaseous fuels such as natural gas, liquefied gas and city gas, and can automatically open or close the gas passage under the action of electromagnetic energy, thereby controlling the supply and cut-off of the gas. The first control valve 211 is an oil solenoid valve, which mainly controls liquid fuels such as light oil, heavy oil and residual oil, and its working principle is similar to that of the gas solenoid valve, but it is directed to liquid fuels, which will not be described here.

[0047] Referring to Figure 2 , the ignition assembly 32 includes a control system (not shown in the figure), an ignition controller (not shown in the figure), an igniter 321 and a flame detector (not shown in the figure), wherein the igniter 321 is fixedly arranged on the swirler disc 31. When the burner needs to be ignited, the control system sends an ignition signal to the ignition controller. After receiving the signal, the ignition controller controls the igniter 321 to generate an electric spark or a high-temperature flame. At the same time, the fuel is sprayed from the oil nozzle 311, and the flame detector monitors the presence or absence of the flame. If the flame is stable, the ignition is successful. If the flame is extinguished or unstable, the control system will send an alarm signal and take appropriate safety measures.

[0048] The implementation principle of the embodiment of the present application is as follows:

[0049] When the burner is applied to supply oil, the external pipeline is connected with the oil supply pipe 21 in advance, and then the supply amount of the oil is controlled by the first control valve 211, and then the oil enters the combustion chamber of the boiler through the oil supply pipe 21 and the oil outlet pipe 33.

[0050] When the burner is applied to supply gas, the external pipeline is connected with the gas supply pipe 22 in advance, and then the supply amount of the gas is controlled by the second control valve 221, and then the gas enters the combustion chamber of the boiler through the gas supply pipe 22 and the gas outlet pipe 35.

[0051] Embodiment 2:

[0052] Referring to Figure 3 and Figure 4 , the difference between the embodiment of the present application and embodiment 1 is that the base plate 4 is arranged below the support plate 1, wherein the support plate 1 is fixedly installed on the base plate 4, and the moving assembly 5 is arranged on the side surface of the base plate 4, wherein the moving assembly 5 includes four rollers 51 fixedly arranged on the bottom side surface of the base plate 4, and the traction handle 52 is arranged on the upper side surface of the base plate 4.

[0053] When the burner needs to be moved for a short distance, the burner is placed on the ground in advance, so that the rollers 51 abut against the ground, and then the worker can pull the burner on the base plate 4 through the traction handle 52.

[0054] With reference to Figure 5 , the bottom side of the substrate 4 is provided with a receiving groove 41 for accommodating the roller 51, and the upper side of the substrate 4 is provided with a fixing rod 53, the lower end of the fixing rod 53 being rotatably connected to the roller 51, and the bottom side of the receiving groove 41 is provided with an adjusting through hole 411 for the upper end of the fixing rod 53 to pass through, and the substrate 4 is provided with an adjusting member 54 for controlling the up-and-down sliding of the fixing rod 53.

[0055] Two traction handles 52 are symmetrically arranged on the two side surfaces of the shell 2, and the traction handle 52 is rotatably connected to the upper side of the substrate 4 and can be adjusted and fixed in rotation, and the traction handle 52 can control the adjusting member 54 to drive the fixing rod 53 to slide up and down when rotating.

[0056] With reference to Figure 6 , the upper side of the substrate 4 is fixedly provided with a hinge seat 42 hingedly connected to the lower end of the traction handle 52, and the hinge seat 42 is provided with a plurality of locking screw holes 421, and the traction handle 52 is provided with locking through holes 521 that can coincide with the locking screw holes 421, and the upper side of the substrate 4 is provided with locking bolts 43 that pass through the locking through holes 521 and are screwed into the locking screw holes 421.

[0057] The locking bolt 43 is a butterfly bolt, which can be manually tightened or loosened by the staff to control the rotational adjustment of the traction handle 52, so that the traction handle 52 can be rotated to a vertical state, an upward 45-degree state and fixed.

[0058] With reference to Figure 5 , Figure 6 and Figure 7 , the adjusting member 54 includes a first adjusting rod 541 sliding on the substrate 4 and a second adjusting rod 542 hingedly connected to one end of the traction handle 52, wherein the end of the first adjusting rod 541 close to the traction handle 52 is hingedly connected to the other end of the second adjusting rod 542, and the upper end of the fixing rod 53 is provided with a guide inclined surface 531; and the side surface of the support plate 1 is provided with a locking slot 11 for sliding and clamping the end of the first adjusting rod 541.

[0059] When the traction handle 52 rotates, it will drive the first adjusting rod 541 to reciprocate through the second adjusting rod 542, so that the end of the first adjusting rod 541 away from the traction handle 52 can press the fixing rod 53 downward along the guide inclined surface 531; the outer periphery of the fixing rod 53 is fixedly provided with two baffles 532, and the upper side opening of the adjusting through hole 411 is provided with an adjusting recess 412 for accommodating the baffle 532, and the adjusting recess 412 is provided with a compression spring 533 in a compressed state, and the two ends of the compression spring 533 are fixedly connected to the bottom side of the adjusting recess 412 and the lower side of the baffle 532, respectively.

[0060] When the traction handle 52 is in the vertical state, the lower side of the first adjusting rod 541 is in abutment with the upper end surface of the fixed rod 53, the fixed rod 53 moves downward, the roller 51 protrudes from the bottom side surface of the base plate 4, and the end portion of the first adjusting rod 541 is synchronously inserted into the locking slot 11; when the traction handle 52 is in the oblique upward 45-degree state, the first adjusting rod 541 is dislocated from the upper end surface of the fixed rod 53, the compression spring 533 drives the fixed rod 53 to move upward, the roller 51 is completely placed into the accommodating groove 41, and the end portion of the first adjusting rod 541 is pulled out of the locking slot 11.

[0061] With reference to Figure 8 , the upper side of the shell 2 is fixedly provided with a lifting handle 24, and two protective curtains 6 are symmetrically arranged above the base plate 4, wherein the protective curtain 6 is a flexible graphite coil material, which has excellent heat resistance and cold resistance and can maintain stable physical properties at extreme temperatures; one side of the protective curtain 6 is detachably connected with the traction handle 52, and the other side is detachably connected with the lifting handle 24.

[0062] In the application of the burner, the upper part of the burner can be shielded by the protective curtain 6, thereby reducing the problem that impurities attached to the surface of the burner shell during boiler combustion affect the use performance; when the burner needs to be hoisted, the hoisting equipment can quickly hoist through the lifting handle 24.

[0063] With reference to Figure 8 , Figure 9 and Figure 10 , the traction handle 52 is provided with a receiving cavity 522 on the side surface thereof facing the shell 2, wherein one side of the protective curtain 6 close to the traction handle 52 is fixedly arranged on the inner wall of the receiving cavity 522; and a limiting groove 523 is arranged on the opening edge of the receiving cavity 522, and the traction handle 52 is provided with a cover plate 55 which is hingedly connected with the traction handle 52 on one side, and the other side of the cover plate 55 is detachably connected with the inner wall of the limiting groove 523 through a butterfly screw.

[0064] The protective curtain 6 is fixedly provided with two hooks 61 on the side surface thereof facing the shell 2, and the lifting handle 24 is fixedly provided with a hanging ring 241 for the hooks 61 to be clamped into, so as to facilitate the disassembly and assembly of the protective curtain 6 and the lifting handle 24; when the protective curtain 6 is not needed for protection during transportation or short-distance movement, the protective curtain 6 can be stored in the receiving cavity 522 on the traction handle 52, thereby facilitating packaging, transportation or short-distance movement.

[0065] The implementation principle of the embodiment of the present application is as follows:

[0066] When the burner needs to be moved for a short distance, the pulling handle 52 is adjusted to the vertical state, the lower side of the first adjusting rod 541 abuts against the upper end surface of the fixed rod 53, the fixed rod 53 moves downward, the roller 51 protrudes from the bottom side of the base plate 4, and the end portion of the first adjusting rod 541 is inserted into the locking slot 11 synchronously; in this state, the connection stability of the support plate 1 and the base plate 4 is improved, the hoisting equipment is convenient for hoisting the burner, and the stability of the burner during short-distance movement is also improved;

[0067] When the burner is applied, the pulling handle 52 is adjusted to the oblique upward state of 45 degrees, the first adjusting rod 541 is dislocated from the upper end surface of the fixed rod 53, the compression spring 533 drives the fixed rod 53 to move upward, the roller 51 is completely placed into the accommodating groove 41, and the end portion of the first adjusting rod 541 is pulled out of the locking slot 11; in addition, the protective curtain 6 can be taken out from the storage cavity 522, the hook 61 on the protective curtain 6 is clamped into the hanging ring 241 on the lifting handle 24, and the upper part of the burner is protected.

[0068] Unless otherwise defined, the terms or scientific terms used in the present application shall have the usual meaning understood by a person with ordinary skill in the art to which the present application belongs. The terms "first", "second", "third" and the like used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "one" or "a" and the like do not represent a quantity limitation, but represent the existence of at least one. The terms "including", "containing" and the like mean that the elements or objects appearing before "including" or "containing" cover the elements or objects listed after "including" or "containing" and their equivalents, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0069] The embodiments of the present specific embodiment are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. An ultra-low nitrogen dual-fuel burner, characterized in that, The device includes a support plate (1) and a housing (2) fixed on the support plate (1). The housing (2) is provided with an oil supply pipe (21), an air supply pipe (22) and a blower assembly (23). One end of the oil supply pipe (21) is provided with a first control valve (211), and the air supply pipe (22) is provided with a second control valve (221). A fixing sleeve (3) is fixed on the side of the housing (2). A swirl plate (31) and an ignition assembly (32) are fixed inside the fixing sleeve (3). The fixed sleeve (3) is also fixedly provided with an oil outlet pipe (33), an oil return pipe (34) and several air outlet pipes (35). The ends of the oil outlet pipe (33) and the oil return pipe (34) near the shell (2) are connected to the oil supply pipe (21), and the ends of the several air outlet pipes (35) near the shell (2) are connected to the air supply pipe (22). The vortex plate (31) is provided with an oil outlet hole connected to the other end of the oil outlet pipe (33) and an oil return hole connected to the other end of the oil return pipe (34). The vortex plate (31) is also fixedly provided with an oil nozzle (311) that is connected to both the oil outlet hole and the oil return hole. The support plate (1) is provided with a base plate (4) below it. The support plate (1) is fixed on the base plate (4). Several rollers (51) are provided on the bottom side of the base plate (4). Traction handles (52) are provided on the two opposite sides of the upper side of the base plate (4). The base plate (4) has a receiving groove (41) on its bottom side for inserting the roller (51). A fixing rod (53) is provided on the top of the base plate (4). The lower end of the fixing rod (53) is rotatably connected to the roller (51). An adjustment through hole (411) is provided on the bottom side of the receiving groove (41) for the upper end of the fixing rod (53) to pass through. An adjustment member (54) is provided on the base plate (4) to control the sliding of the fixing rod (53) up and down. Two traction handles (52) are symmetrically arranged on the two sides of the housing (2). The traction handles (52) are rotatably connected to the upper side of the base plate (4). The traction handles (52) can be rotated, adjusted and fixed. When the traction handles (52) rotate, they can control the adjustment member (54) to drive the fixing rod (53) to slide up and down. The upper side of the substrate (4) is fixed with a hinge seat (42) that is hinged to the lower end of the traction handle (52). The hinge seat (42) has a plurality of locking screw holes (421). The traction handle (52) has a locking through hole (521) that can coincide with the locking screw hole (421). The upper part of the substrate (4) is provided with a locking bolt (43) that passes through the locking through hole (521) and is screwed into the locking screw hole (421). The upper end edge of the fixed rod (53) is provided with a guide slope (531). The adjusting member (54) includes a first adjusting rod (541) slidably disposed on the base plate (4) and a second adjusting rod (542) with one end hinged to the traction handle (52). The end of the first adjusting rod (541) near the traction handle (52) is hinged to the other end of the second adjusting rod (542). The end of the first adjusting rod (541) away from the traction handle (52) can press the fixed rod (53) downward along the guide slope (531). A baffle (532) is fixed on the outer periphery of the fixed rod (53). An adjustment groove (412) for inserting the baffle (532) is provided on the upper opening edge of the adjustment through hole (411). A compression spring (533) is provided in the adjustment groove (412). The two ends of the compression spring (533) are fixedly connected to the bottom side of the adjustment groove (412) and the lower side of the baffle (532), respectively.

2. The ultra-low nitrogen dual-fuel burner according to claim 1, characterized in that, The side of the support plate (1) is provided with a locking slot (11) into which the end of the first adjusting rod (541) slides.

3. The ultra-low nitrogen dual-fuel burner according to claim 1, characterized in that, A lifting handle (24) is fixed on the upper side of the housing (2), and two protective curtains (6) are symmetrically arranged above the base plate (4). One side of the protective curtain (6) is detachably connected to the traction handle (52), and the other side is detachably connected to the lifting handle (24).

4. The ultra-low nitrogen dual-fuel burner according to claim 3, characterized in that, The traction handle (52) has a storage cavity (522) on the side facing the housing (2), and the protective curtain (6) is fixed on the inner wall of the storage cavity (522) on the side near the traction handle (52). The storage cavity (522) has a limiting groove (523) at the opening edge. The traction handle (52) is provided with a cover plate (55) on one side that is hinged to the traction handle (52). The other side of the cover plate (55) is detachably connected to the inner wall of the limiting groove (523).

5. The ultra-low nitrogen dual-fuel burner according to claim 3, characterized in that, The protective curtain (6) is fixed with several hooks (61) on the side facing the housing (2), and the lifting handle (24) is fixed with a hanging ring (241) for the hooks (61) to be inserted.

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