Secondary air adjusting device of boiler

Abstract

The embodiment of the utility model provides a boiler secondary air adjusting device, and relates to the technical field of boilers. The boiler secondary air adjusting device comprises a boiler equipment body, a secondary air inlet pipe opening is formed in the right side of the boiler equipment body, the outer surface of the boiler equipment body communicates with a first air inlet pipeline, a petal type air door is installed on the right side of the first air inlet pipeline, and a second air inlet pipeline is installed on the right side of the petal type air door; through the arrangement of the anti-blocking assembly, the effect of dredging the interior of the air pipe is achieved, when the draught fan is started, the anti-blocking assembly can be driven to sweep the interior of the air pipe, after sweeping is completed, the materials can be stored and managed in a centralized mode, and the anti-blocking effect is achieved. Therefore, the situation that an inner cavity of the air pipe is blocked is prevented, the working efficiency of the fan is optimized, the situation that carbon monoxide is increased is reduced, energy loss is reduced, the working efficiency of the boiler is improved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a boiler secondary air regulating device. Background Art

[0002] Boiler secondary air refers to the hot air introduced from the outside of the furnace and sent into the furnace in order to further promote the complete combustion of the fuel during the combustion process. Primary air: refers to the air sent from the bottom of the grate when the layer-burning furnace is burning; the air sent into the furnace together with the coal powder when the coal powder is burning; the air sent into the furnace from the root of the fire when the oil and gas fuels are burning. The primary air plays a leading role in the combustion of the boiler. Secondary air: The name of the air supply used to provide oxygen for the coal powder in a thermal power plant. Secondary air is generally provided by a dedicated secondary fan and is sent in through secondary air ports distributed at different heights in the furnace to ensure that the oxygen can be evenly distributed and penetrate into the combustion area. In different types of boilers, the specific application methods and adjustment strategies of secondary air will vary.

[0003] When the existing secondary air is used to supply air to the boiler, since the secondary air is sent into the boiler through the air duct, after long-term use, the materials burning inside the boiler are constantly splashed into the inside of the air duct when burning or being blown by the wind, causing the slag inlet of the secondary air duct to be blocked. After the secondary fan is started, it cannot be effectively blown through, resulting in insufficient secondary air volume, increased carbon monoxide generation, increased energy loss, and unbalanced wind speed ratio during normal operation of the boiler. Therefore, we propose a boiler secondary air regulation device with easy-to-use functions, which is urgently needed to be developed. Utility Model Content

[0004] The utility model aims to provide a boiler secondary air regulating device, which can avoid the problem that when the existing secondary air is used to supply air to the boiler, the material burning inside the boiler is constantly splashed into the inside of the air duct when burning or being blown by the wind after long-term use, thereby causing the secondary air duct to be blocked by slag, and the secondary fan cannot be effectively blown through after starting, resulting in insufficient secondary air volume, increased carbon monoxide generation, increased energy loss, and unbalanced wind speed ratio during normal operation of the boiler.

[0005] The utility model provides a boiler secondary air regulating device, comprising a boiler equipment body, a secondary air inlet pipe opening is opened on the right side of the boiler equipment body, the outer surface of the boiler equipment body is connected with a first air inlet duct, a petal-type damper is installed on the right side of the first air inlet duct, a second air inlet duct is installed on the right side of the petal-type damper, a fan is installed on the right side of the second air inlet duct, and the output end of the fan passes through the inner cavity of the second air inlet duct, and the inner cavity of the first air inlet duct is provided with an anti-blocking component.

[0006] In a specific embodiment, a baffle is connected to the left side of the inner cavity of the first air inlet duct, and a plurality of penetrating cavities are opened on the surface of the baffle.

[0007] In a specific embodiment, the anti-blocking component includes a storage box, a surface of the storage box is connected to the first air inlet duct, and a rear side of the storage box is connected to a mounting box.

[0008] In a specific embodiment, the inner cavity of the second air inlet duct is rotatably connected to a rotating component, and the rear end of the rotating component penetrates into the inner cavity of the installation box, and the inner cavity of the installation box is rotatably connected to a rotating rod.

[0009] In a specific embodiment, two first pulleys are respectively sleeved on the surface of the rotating rod and the surface of the rotating component, and the two first pulleys are connected by belt transmission.

[0010] In a specific embodiment, the inner cavity of the storage box is rotatably connected with a stirring component, and the rear end of the stirring component penetrates into the inner cavity of the installation box.

[0011] In a specific embodiment, two second pulleys are respectively provided on the surface of the rotating rod and the surface of the stirring component, and the two second pulleys are connected by belt transmission, and the bottom of the storage box is connected to a discharge pipe.

[0012] In a specific embodiment, a round rod is provided through the surface of the first air inlet duct, and the top and bottom ends of the round rod respectively penetrate the inner cavity of the installation box and the first air inlet duct, and the top end of the round rod and the surface of the rotating rod are respectively connected to two meshing bevel gears.

[0013] In a specific embodiment, sliding rods are installed on both sides of the inner cavity of the first air inlet duct, the surface of the sliding rods is movably connected with a slider, the surface of the slider is connected with a moving frame, and the bottom end of the round rod is connected with a push plate.

[0014] In a specific embodiment, the push plate is rotatably connected to one end of the round rod with a push rod, the bottom end of the push rod is slidably connected to the movable frame, the surface of the slider is connected to a connecting block, and the bottom end of the connecting block is connected to a push plate in contact with the first air inlet duct.

[0015] The beneficial effect of the present application is that by setting up the anti-blocking component, the inside of the air duct can be unblocked, and whenever the fan is started, the anti-blocking component can be driven to clean the inside of the air duct, and when the cleaning is completed, these materials can be centrally stored and managed, thereby preventing blockage in the inner cavity of the air duct, optimizing the working efficiency of the fan, reducing the increase of carbon monoxide, reducing energy loss, improving the working efficiency of the boiler, and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of the storage box structure of an embodiment of the utility model;

[0019] Figure 3 It is a perspective schematic diagram of a side cross-sectional structure of a storage box according to an embodiment of the utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the stirring component structure of an embodiment of the utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the push plate structure of an embodiment of the utility model;

[0022] Figure 6 It is a perspective schematic diagram of the side cross-sectional structure of the first air inlet duct of an embodiment of the utility model.

[0023] Icons: 1. Boiler equipment body; 2. Secondary air inlet pipe; 3. First air inlet duct; 31. Baffle; 4. Petal-type damper; 5. Second air inlet duct; 6. Fan; 7. Anti-blocking component; 71. Storage box; 72. Installation box; 73. Rotating component; 74. Rotating rod; 75. First pulley; 76. Stirring component; 77. Second pulley; 78. Discharge pipe; 79. Round rod; 710. Bevel gear; 711. Sliding rod; 712. Sliding block; 713. Moving frame; 714. Push plate; 715. Push rod; 716. Connecting block; 717. Push plate. DETAILED DESCRIPTION

[0024] When the existing secondary air is used to supply air to the boiler, since the secondary air is sent into the boiler through the air duct, after long-term use, the materials burning inside the boiler are constantly splashed into the inside of the air duct when burning or being blown by the wind, thereby causing the secondary air duct to be blocked. After the secondary fan is started, it cannot be effectively blown through, resulting in insufficient secondary air volume, increased carbon monoxide generation, increased energy loss, and imbalanced wind speed ratio during normal operation of the boiler. Therefore, the inventor has provided a boiler secondary air regulating device after research, which plays a role in dredging the inside of the air duct through the setting of the anti-blocking component, and whenever the fan is started, it can drive the anti-blocking component to clean the inside of the air duct, and after the cleaning is completed, these materials can also be centrally stored and managed, thereby preventing the blockage of the inner cavity of the air duct, optimizing the working efficiency of the fan, reducing the increase of carbon monoxide, reducing energy loss, improving the working efficiency of the boiler, and facilitating use, thereby solving the above-mentioned defects.

[0025] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] Please refer to Figures 1 to 6 The embodiment of the utility model provides a boiler secondary air regulating device, comprising a boiler equipment body 1, a secondary air inlet port 2 is provided on the right side of the boiler equipment body 1, a first air inlet duct 3 is connected to the outer surface of the boiler equipment body 1, a petal-type damper 4 is installed on the right side of the first air inlet duct 3, a baffle plate 31 is connected to the left side of the inner cavity of the first air inlet duct 3, and a plurality of through cavities are provided on the surface of the baffle plate 31, so that the baffle plate 31 is used to prevent the large volume of combustion products burning inside the boiler equipment body 1 from splashing, a second air inlet duct 5 is installed on the right side of the petal-type damper 4, a fan 6 is installed on the right side of the second air inlet duct 5, and the output end of the fan 6 penetrates into the inner cavity of the second air inlet duct 5;

[0027] Please refer to Figures 2 to 6 The inner cavity of the first air inlet duct 3 is provided with an anti-blocking component 7, which includes a storage box 71. The surface of the storage box 71 is connected to the first air inlet duct 3. The rear side of the storage box 71 is connected to the installation box 72. The inner cavity of the second air inlet duct 5 is rotatably connected with a rotating component 73, and the rear end of the rotating component 73 penetrates into the inner cavity of the installation box 72, wherein the rotating component 73 is composed of a rotating shaft body and a fan blade, and the rotating shaft body is rotatably connected to the second air inlet duct 5, and the rear end of the rotating shaft body penetrates into the inner cavity of the installation box 72, and the contact area is sealed, and the inner cavity of the installation box 72 is rotatably connected with a rotating rod 74;

[0028] Please refer to Figures 2 to 5The surfaces of the rotating rod 74 and the rotating component 73 are respectively provided with two first pulleys 75, and the two first pulleys 75 are connected by belt transmission, wherein the first pulley 75 is connected to the rotating shaft body, the inner cavity of the storage box 71 is rotatably connected with a stirring component 76, and the rear end of the stirring component 76 penetrates into the inner cavity of the installation box 72, wherein the stirring component 76 is composed of a stirring blade and a stirring rod, and the stirring rod is rotatably connected to the installation box 72, and the rear end of the stirring rod penetrates into the inner cavity of the installation box 72, and the penetration area The surfaces of the rotating rod 74 and the stirring member 76 are respectively sleeved with two second pulleys 77, and the two second pulleys 77 are connected by belt transmission. The bottom of the storage box 71 is connected with a discharge pipe 78, and the surface of the discharge pipe 78 is sleeved with a valve. The surface of the first air inlet pipe 3 is penetrated with a round rod 79, and the top and bottom ends of the round rod 79 are respectively penetrated into the inner cavity of the installation box 72 and the first air inlet pipe 3, and the area where the round rod 79 penetrates the first air inlet pipe 3 and the installation box 72 is sealed;

[0029] Please refer to Figures 1 to 5 , the top of the round rod 79 and the surface of the rotating rod 74 are respectively connected to two meshing bevel gears 710, and sliding rods 711 are installed on both sides of the inner cavity of the first air inlet duct 3, and the surface of the sliding rod 711 is movably connected to a slider 712, and the surface of the slider 712 is connected to a moving frame 713, and the bottom end of the round rod 79 is connected to a push plate 714, and the end of the push plate 714 away from the round rod 79 is rotatably connected to a push rod 715, and the bottom end of the push rod 715 is slidably connected to the moving frame 713, and the surface of the slider 712 is connected to a connecting block 716, and the bottom end of the connecting block 716 is connected to a push plate 717 in contact with the first air inlet duct 3, wherein both sides of the inner cavity of the first air inlet duct 3 are provided with a through cavity adapted to the push plate 717, so as to facilitate the collection of blocked materials;

[0030] Specifically, when the fan 6 is started to bring the wind flow into the second air inlet duct 5, the wind flow drives the rotating component 73 to rotate, the rotating component 73 drives the first pulley 75 to rotate, the first pulley 75 drives the rotating rod 74 to rotate, and the rotating rod 74 drives the second pulley 77 and the two bevel gears 710 to rotate together, wherein the bevel gear 710 drives the round rod 79 to rotate, and the round rod 79 drives the push plate 714 to make a circular motion, and the push plate 714 drives the push rod 715 to slide in the inner cavity of the moving frame 713 while rotating, so as to push the moving frame 713 and the slider 712 on the surface of the slide rod 711 The slider 712 drives the connecting block 716 to move synchronously, and the connecting block 716 drives the pushing plate 717 to move synchronously, so that the pushing plate 717 cleans the scattered smaller materials in the first air inlet duct 3, and sweeps them into the storage box 71 for centralized storage. At this time, the second pulley 77 drives the stirring component 76 to rotate, thereby stirring the stored materials to prevent agglomeration when placed. At this time, the user can use an external storage device or pipeline to connect with the discharge pipeline 78 to centrally recycle the cleaned materials for easy use.

[0031] In summary, the working principle of a boiler secondary air regulating device in an embodiment of the utility model is: the user starts the fan 6 to gradually transmit the airflow through the petal-type damper 4 to the first air inlet duct 3 and the secondary air inlet pipe 2, and finally flows to the boiler equipment body 1, so as to achieve the control of the temperature during combustion, wherein the user can also control the flow rate of the wind through the petal-type damper 4, and when the fan 6 is turned on, it can also drive the anti-blocking component 7 to clean the materials splashed into the inner cavity of the first air inlet duct 3 during combustion, so as to avoid blockage of the first air inlet duct 3, which is convenient for use.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A boiler secondary air regulating device, comprising a boiler equipment body (1), characterized in that: A secondary air inlet pipe opening (2) is provided on the right side of the boiler equipment body (1); the outer surface of the boiler equipment body (1) is connected to a first air inlet duct (3); a petal-type damper (4) is installed on the right side of the first air inlet duct (3); a second air inlet duct (5) is installed on the right side of the petal-type damper (4); a fan (6) is installed on the right side of the second air inlet duct (5); and the output end of the fan (6) passes through the inner cavity of the second air inlet duct (5); and an anti-blocking component (7) is provided in the inner cavity of the first air inlet duct (3).

2. A boiler secondary air regulating device according to claim 1, characterized in that: The left side of the inner cavity of the first air inlet duct (3) is connected to a baffle plate (31), and a plurality of penetrating cavities are formed on the surface of the baffle plate (31).

3. A boiler secondary air regulating device according to claim 1, characterized in that: The anti-blocking component (7) comprises a storage box (71), the surface of the storage box (71) is connected to the first air inlet duct (3), and the rear side of the storage box (71) is connected to a mounting box (72).

4. A boiler secondary air regulating device according to claim 3, characterized in that: The inner cavity of the second air inlet duct (5) is rotatably connected to a rotating component (73), and the rear end of the rotating component (73) penetrates into the inner cavity of the installation box (72), and the inner cavity of the installation box (72) is rotatably connected to a rotating rod (74).

5. A boiler secondary air regulating device according to claim 4, characterized in that: The surface of the rotating rod (74) and the surface of the rotating component (73) are respectively sleeved with two first belt pulleys (75), and the two first belt pulleys (75) are connected by belt transmission.

6. A boiler secondary air regulating device according to claim 5, characterized in that: The inner cavity of the storage box (71) is rotatably connected to a stirring component (76), and the rear end of the stirring component (76) penetrates into the inner cavity of the installation box (72).

7. A boiler secondary air regulating device according to claim 6, characterized in that: The surface of the rotating rod (74) and the surface of the stirring component (76) are respectively sleeved with two second pulleys (77), and the two second pulleys (77) are connected by belt transmission. The bottom of the storage box (71) is connected to a discharge pipe (78).

8. A boiler secondary air regulating device according to claim 7, characterized in that: A round rod (79) is provided through the surface of the first air inlet duct (3), and the top and bottom ends of the round rod (79) respectively penetrate the inner cavity of the installation box (72) and the first air inlet duct (3), and the top end of the round rod (79) and the surface of the rotating rod (74) are respectively connected to two meshing bevel gears (710).

9. A boiler secondary air regulating device according to claim 8, characterized in that: Sliding rods (711) are installed on both sides of the inner cavity of the first air inlet duct (3); the surface of the sliding rod (711) is movably connected to a sliding block (712); the surface of the sliding block (712) is connected to a movable frame (713); and the bottom end of the round rod (79) is connected to a push plate (714).

10. A boiler secondary air regulating device according to claim 9, characterized in that: The end of the push plate (714) away from the round rod (79) is rotatably connected to a push rod (715), the bottom end of the push rod (715) is slidably connected to the movable frame (713), the surface of the slider (712) is connected to a connecting block (716), and the bottom end of the connecting block (716) is connected to a push plate (717) in contact with the first air inlet duct (3).

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