Air supply mechanism for low-nitrogen treatment of boiler burner

Abstract

The utility model discloses an air supply mechanism for low-nitrogen treatment of a boiler burner, and particularly relates to the technical field of boiler burning, which comprises a support frame, an arc-shaped plate is arranged at the bottom of the support frame, a fixing sleeve is arranged at the top of the support frame, and a dismounting mechanism is arranged on one side of the fixing sleeve. An adjusting mechanism is arranged on the other side of the fixing sleeve and comprises a connecting pipe arranged on the other side of the fixing sleeve, a plurality of branch air pipes are arranged on one side of the connecting pipe, fixing boxes are arranged on one sides of the branch air pipes, motors are arranged in the fixing boxes, and the output ends of the motors are in coaxial transmission connection with rotating shafts. One end of the rotating shaft is rotationally connected with the inner wall of the branch air pipe. According to the utility model, the conveying of air volume can be controlled, the accurate control of the combustion process is realized, the emission of nitrogen oxides is reduced, and the operation efficiency of the boiler is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler combustion, and more specifically to an air supply mechanism for low-nitrogen treatment of a boiler burner. Background Art

[0002] Boiler burner refers to the burner used on the boiler. Boiler burner is the most important equipment in the auxiliary equipment of oil and gas boilers. In the working process of low-nitrogen combustion boilers, the air supply system is the key component of low-nitrogen treatment of boiler burners. Its main function is to provide an appropriate amount of air for the combustion process to ensure the full combustion of the fuel and reduce the generation of nitrogen oxides.

[0003] At present, the air supply of the low-nitrogen treatment air supply mechanism of the boiler burner on the market often has insufficient air supply pressure, which affects the normal combustion of the fuel in the boiler. At the same time, the current device does not mix the flue gas and air sufficiently, resulting in an increase in the content of nitrogen compounds after the fuel is burned.

[0004] After searching, a Chinese patent with publication number CN216897376U discloses an air supply mechanism for low-nitrogen treatment of boiler burners. The structure sets an air supply mechanism. When the air supply mechanism is in operation, it is convenient to replenish pressure in the outlet pipe, so that the outlet pressure of the outlet pipe is stable, the fuel is burned normally, and the working time is reduced. Secondly, a mixing mechanism is set. When the mixing mechanism is in operation, the air and the flue gas can be stirred to make them fully mixed, thereby reducing the content of nitrogen compounds in the flue gas.

[0005] However, when this structure is actually used, air is transported into the boiler through the air outlet pipe to ensure normal combustion of the fuel. The air volume during the transportation process is difficult to control, resulting in uneven combustion of the boiler hearth, thereby causing energy waste and reduced equipment operating efficiency. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides an air supply mechanism for low-nitrogen treatment of a boiler burner to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An air supply mechanism for low nitrogen treatment of a boiler burner comprises a support frame, a curved plate is arranged at the bottom of the support frame, a fixing sleeve is arranged at the top of the support frame, a disassembly mechanism is arranged on one side of the fixing sleeve, and an adjustment mechanism is arranged on the other side of the fixing sleeve;

[0009] The adjustment mechanism includes a connecting tube arranged on the other side of the fixing sleeve, a plurality of bronchi are arranged on one side of the connecting tube, a fixing box is arranged on one side of each of the plurality of bronchi, a motor is arranged inside the fixing box, an output end of the motor is coaxially connected to a rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the bronchus, a turntable is sleeved on the rotating shaft, and sealing rings are sleeved around the turntable.

[0010] By adopting the above technical solution: in order to facilitate the control of air volume delivery, achieve precise control of the combustion process, reduce nitrogen oxide emissions, and improve the operating efficiency of the boiler.

[0011] As a further description of the above technical solution: the disassembly mechanism includes an air inlet pipe arranged on one side of the fixed sleeve, a fan is arranged on one side of the air inlet pipe, a first connecting sleeve is sleeved on the air inlet pipe, the first connecting sleeve and the fixed sleeve are connected by bolts, a second connecting sleeve is sleeved on the connecting pipe, and the second connecting sleeve and the fixed sleeve are connected by bolts.

[0012] By adopting the above technical solution: in order to facilitate the disassembly of the branch pipe, it is convenient for later inspection and maintenance.

[0013] As a further description of the above technical solution: a fixed pipe is provided at one end of the bronchus, an air outlet pipe is provided at one end of the fixed pipe, a sealing gasket is provided on one side of the first connecting sleeve and the second connecting sleeve, an anti-corrosion layer is provided on the inner walls of the connecting pipe, bronchus, air inlet pipe and air outlet pipe, and a heat insulation layer is provided on the surfaces of the connecting pipe, bronchus, air inlet pipe and air outlet pipe.

[0014] By adopting the above technical solution: in order to enhance the anti-corrosion effect of the air duct, and to have a certain heat insulation effect, the service life of the air duct is extended.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By setting the regulating mechanism, compared with the prior art, the blower is started to drive oxygen to enter the interior of the connecting pipe through the air inlet pipe, and then transported to the interior of multiple bronchial pipes through the connecting pipe. At the same time, the motors in two of the fixed boxes are started first to drive the rotating shaft to rotate, and the rotating shaft drives the turntable to rotate to produce a gap, so that the sealing ring is separated from the inner wall of the bronchial pipe, so that the air is transported through the air outlet pipe into the boiler, so that in the primary combustion zone, the fuel and part of the air are initially burned to form certain combustion products, and then the motors in the other two fixed boxes are started, the other two bronchial pipes are opened, and the air outlet pipe enters the boiler, so as to introduce more air and make the remaining fuel completely burned. By controlling the combustion conditions at different stages, the optimization of combustion products and low-nitrogen combustion are achieved;

[0017] 2. By setting up a disassembly mechanism, compared with the prior art, the bolt is first rotated to separate the first connecting sleeve from the fixed sleeve, and at the same time the second connecting sleeve is separated from the fixed sleeve, so as to facilitate disassembly, thereby removing the adjusting mechanism for convenient inspection and maintenance, and by setting an anti-corrosion layer, wherein the anti-corrosion layer is made of polyethylene anti-corrosion material, and by setting up a heat insulation layer, the heat insulation layer is made of polyurethane foam material and has good heat insulation and high temperature resistance effects, thereby ensuring good ventilation performance and long-term stability of the air duct, and further improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a front view structural schematic diagram of the utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the regulating mechanism of the utility model.

[0021] Figure 4 It is a schematic diagram of the disassembly mechanism structure of the utility model.

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the air outlet pipe of the utility model.

[0023] The accompanying drawings are marked as follows: 1. support frame; 2. curved plate; 3. fixing sleeve; 4. connecting pipe; 5. bronchial tube; 6. fixing box; 7. rotating shaft; 8. turntable; 9. sealing ring; 10. air inlet pipe; 11. fan; 12. first connecting sleeve; 13. second connecting sleeve; 14. fixing pipe; 15. air outlet pipe; 16. sealing pad; 17. anti-corrosion layer; 18. thermal insulation layer. DETAILED DESCRIPTION

[0024] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The embodiments of this application disclose Figure 1-5 The air supply mechanism for low nitrogen treatment of boiler burners shown in the figure comprises a support frame 1, an arc-shaped plate 2 is arranged at the bottom of the support frame 1, a fixing sleeve 3 is arranged at the top of the support frame 1, a disassembly mechanism is arranged on one side of the fixing sleeve 3, and an adjustment mechanism is arranged on the other side of the fixing sleeve 3;

[0026] The regulating mechanism comprises a connecting tube 4 arranged on the other side of the fixing sleeve 3, a plurality of bronchi 5 are arranged on one side of the connecting tube 4, a fixing box 6 is arranged on one side of the plurality of bronchi 5, a motor is arranged inside the fixing box 6, the output end of the motor is coaxially connected with a rotating shaft 7, one end of the rotating shaft 7 is rotatably connected with the inner wall of the bronchial tube 5, a rotating disk 8 is sleeved on the rotating shaft 7, a sealing ring 9 is sleeved around the rotating disk 8, the fan 11 is started to drive oxygen to enter the interior of the connecting tube 4 through the air inlet pipe 10, and then transported to the interior of the plurality of bronchi 5 through the connecting tube 4, and at the same time, the motors inside two of the fixing boxes 6 are started to drive the rotating shaft 7 to rotate, and the rotating shaft 7 drives the rotating disk 8 to rotate to generate a gap, so that the sealing ring 9 is separated from the inner wall of the bronchial tube 5, thereby The air is transported to the fixed pipe 14, and then transported to the inside of the air outlet pipe 15 through the fixed pipe 14, and then enters the boiler through the air outlet pipe 15, so that in the primary combustion zone, the fuel and part of the air are initially burned to form certain combustion products, and then the motors inside the other two fixed boxes 6 are started to drive the rotating shaft 7 to rotate, and the rotating shaft 7 drives the turntable 8 to rotate to produce a gap, so that the sealing ring 9 is separated from the inner wall of the bronchus 5, so that the air is transported to the fixed pipe 14, and then transported to the inside of the air outlet pipe 15 through the fixed pipe 14, and then enters the boiler through the air outlet pipe 15, so that more air is introduced to make the remaining fuel completely burned, thereby realizing staged combustion, greatly reducing the generation of nitrogen oxides, and at the same time improving combustion efficiency.

[0027] Reference Figure 2-4 As shown, the disassembly mechanism includes an air inlet pipe 10 arranged on one side of the fixed sleeve 3, a fan 11 is arranged on one side of the air inlet pipe 10, a first connecting sleeve 12 is sleeved on the air inlet pipe 10, the first connecting sleeve 12 and the fixed sleeve 3 are connected by bolts, a second connecting sleeve 13 is sleeved on the connecting pipe 4, and the second connecting sleeve 13 and the fixed sleeve 3 are connected by bolts, first rotate the bolts to separate the first connecting sleeve 12 from the fixed sleeve 3, and at the same time separate the second connecting sleeve 13 from the fixed sleeve 3, so as to facilitate disassembly, thereby removing the adjusting mechanism for easy inspection and maintenance.

[0028] Reference Figure 4-5As shown, a fixed tube 14 is provided at one end of the bronchial tube 5, an air outlet pipe 15 is provided at one end of the fixed tube 14, a sealing pad 16 is provided on one side of the first connecting sleeve 12 and the second connecting sleeve 13, an anti-corrosion layer 17 is provided on the inner walls of the connecting tube 4, the bronchial tube 5, the air inlet pipe 10 and the air outlet pipe 15, and a heat insulation layer 18 is provided on the surfaces of the connecting tube 4, the bronchial tube 5, the air inlet pipe 10 and the air outlet pipe 15. The anti-corrosion layer 17 is made of polyethylene anti-corrosion material, which is a common anti-corrosion material for the outside of pipelines. It is an anti-corrosion layer formed by spraying polyethylene hot-melt powder on the inner wall of the pipeline, and has the characteristics of waterproof, anti-corrosion, wear-resistant and anti-aging. The heat insulation layer 18 is made of polyurethane foam material and has good heat insulation and high temperature resistance, thereby ensuring good ventilation performance and long-term stability of the air duct.

[0029] Working principle of the utility model: When the utility model is used, the outlet pipe 15 of the device is first connected to the fixed position of the boiler burner, and then the fan 11 is started to drive the oxygen to enter the interior of the connecting pipe 4 through the air inlet pipe 10, and then transported to the interior of multiple bronchial tubes 5 through the connecting pipe 4, and at the same time, the motors inside two of the fixed boxes 6 are started to drive the rotating shaft 7 to rotate, and the rotating shaft 7 drives the rotating disk 8 to rotate to generate a gap, so that the sealing ring 9 is separated from the inner wall of the bronchial tube 5, so that the air is transported to the fixed pipe 14, and then transported to the interior of the outlet pipe 15 through the fixed pipe 14, and then enter the bronchial tube 5 through the outlet pipe 15. Enter the boiler, so that in the primary combustion zone, the fuel and part of the air are initially burned to form certain combustion products, and then the motors inside the other two fixed boxes 6 are started to drive the rotating shaft 7 to rotate, and the rotating shaft 7 drives the rotating disk 8 to rotate to produce a gap, so that the sealing ring 9 is separated from the inner wall of the bronchial tube 5, so that the air is transported to the fixed pipe 14, and then transported to the inside of the air outlet pipe 15 through the fixed pipe 14, and then enter the boiler through the air outlet pipe 15, so as to introduce more air and make the remaining fuel completely burned, thereby realizing staged combustion, greatly reducing the generation of nitrogen oxides, and improving the combustion efficiency;

[0030] When inspection and maintenance are required after using it for a period of time, first rotate the bolt to separate the first connecting sleeve 12 from the fixed sleeve 3, and at the same time separate the second connecting sleeve 13 from the fixed sleeve 3, so as to facilitate disassembly, thereby removing the adjusting mechanism for easy inspection and maintenance. An anti-corrosion layer 17 is provided, wherein the anti-corrosion layer 17 is made of polyethylene anti-corrosion material. Polyethylene anti-corrosion is a common anti-corrosion material for the outside of pipelines. It is an anti-corrosion layer formed by spraying polyethylene hot-melt powder on the inner wall of the pipeline. It has the characteristics of waterproof, anti-corrosion, wear-resistant and anti-aging. An insulation layer 18 is provided, and the insulation layer 18 is made of polyurethane foam material and has good heat insulation and high temperature resistance, thereby ensuring good ventilation performance and long-term stability of the air duct.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air supply mechanism for low nitrogen treatment of a boiler burner, comprising a support frame (1), characterized in that: The bottom of the support frame (1) is provided with an arc-shaped plate (2), the top of the support frame (1) is provided with a fixing sleeve (3), one side of the fixing sleeve (3) is provided with a disassembly mechanism, and the other side of the fixing sleeve (3) is provided with an adjustment mechanism; The regulating mechanism comprises a connecting tube (4) arranged on the other side of the fixing sleeve (3); a plurality of bronchi (5) are arranged on one side of the connecting tube (4); a fixing box (6) is arranged on one side of each of the plurality of bronchi (5); a motor is arranged inside the fixing box (6); an output end of the motor is coaxially connected to a rotating shaft (7); one end of the rotating shaft (7) is rotatably connected to the inner wall of the bronchial tube (5); a rotating disk (8) is sleeved on the rotating shaft (7); and sealing rings (9) are sleeved around the rotating disk (8).

2. The air supply mechanism for low nitrogen treatment of boiler burners according to claim 1 is characterized in that: The disassembly mechanism comprises an air inlet pipe (10) arranged on one side of the fixing sleeve (3), a fan (11) being arranged on one side of the air inlet pipe (10), a first connecting sleeve (12) being sleeved on the air inlet pipe (10), the first connecting sleeve (12) and the fixing sleeve (3) being connected via bolts, and a second connecting sleeve (13) being sleeved on the connecting pipe (4), the second connecting sleeve (13) and the fixing sleeve (3) being connected via bolts.

3. The air supply mechanism for low nitrogen treatment of boiler burners according to claim 1 is characterized in that: A fixed tube (14) is provided at one end of the bronchus (5), and an air outlet tube (15) is provided at one end of the fixed tube (14).

4. The air supply mechanism for low nitrogen treatment of boiler burners according to claim 2, characterized in that: A sealing gasket (16) is provided on one side of each of the first connecting sleeve (12) and the second connecting sleeve (13).

5. The air supply mechanism for low nitrogen treatment of boiler burners according to claim 1, characterized in that: The inner walls of the connecting pipe (4), the bronchial pipe (5), the air inlet pipe (10) and the air outlet pipe (15) are all provided with an anti-corrosion layer (17), and the surfaces of the connecting pipe (4), the bronchial pipe (5), the air inlet pipe (10) and the air outlet pipe (15) are all provided with a heat insulation layer (18).

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