Gas inlet mechanism of low-nitrogen combustor

Abstract

The utility model discloses a low-nitrogen burner air inlet mechanism which comprises a working shell and an air outlet shell, the working shell and the air outlet shell are connected through a U-shaped channel, a first cover plate is installed on the working shell through a screw, a second cover plate is installed on the air outlet shell through a screw, and a wind wheel is arranged in the working shell. A driving motor for driving the wind wheel to rotate is arranged on the first cover plate, and a wind guide assembly is arranged in the wind outlet shell; the air guide assembly comprises a lower air guide pipe, an air outlet bent pipe is detachably arranged at the end, located on the air outlet shell, of the lower air guide pipe, the bottom of the air outlet bent pipe faces an air outlet of the air outlet shell, an upper attaching pipe attached to the top of the lower air guide pipe is fixed to the top of the inner wall of the second cover plate, and a connecting block is fixed to the bottom of the lower air guide pipe and fixed to the inner wall of the air outlet shell. According to the utility model, air flow in the working shell can be smoothly guided into the air outlet shell from the air guide assembly, and is discharged from the air outlet through the air outlet elbow, so that the air flow is more accumulated, is convenient to disassemble and clean, is kept clean, and is better in air outlet.

Description

Technical Field

[0001] The utility model relates to the technical field related to low-nitrogen burners, and in particular to an air intake mechanism for a low-nitrogen burner. Background Art

[0002] A low-nitrogen burner is a device that adds a blower, an induced draft fan, a frequency converter, a control valve and multiple circuits to a traditional burner to allow clean energy and burner operation to provide more efficient thermal energy for the boiler. Among the existing low-nitrogen burners, the setting of the air intake mechanism can be said to be a very important component in the low-nitrogen burner.

[0003] When the existing low-nitrogen burner device is in use, the internal airflow flows in the air intake mechanism without a stable trajectory, and the airflow passes through the interior for a long time, which will accumulate impurities and dust, affecting its use and making it inconvenient to disassemble and clean it. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an air intake mechanism for a low-nitrogen burner.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An air intake mechanism for a low-nitrogen burner, comprising a working shell and an air outlet shell, wherein the working shell and the air outlet shell are connected via a U-shaped channel, a first cover plate is mounted on the working shell via screws, a second cover plate is mounted on the air outlet shell via screws, a wind wheel is arranged inside the working shell, a driving motor for driving the wind wheel to rotate is arranged on the first cover plate, and an air guide assembly is arranged inside the air outlet shell;

[0007] The air guide assembly includes a lower air guide duct, which is located at one end of the air outlet shell and is equipped with a detachable air outlet bend pipe, and the bottom of the air outlet bend pipe faces the air outlet of the air outlet shell, and an upper fitting tube that fits with the top of the lower air guide duct is fixed to the top of the inner wall of the second cover plate.

[0008] As a further solution of the utility model, a connecting block is fixed to the bottom of the lower air guide duct, and the connecting block is fixed to the inner wall of the air outlet shell.

[0009] As a further solution of the utility model, a cover opening is provided on the inner wall of the lower air duct near the air outlet elbow, and the cover opening is fixed to the air outlet elbow, and a hole for the air outlet elbow to pass through is opened on the lower air duct.

[0010] As a further solution of the utility model, the inner wall of the lower air duct and the inner wall of the upper fitting tube are provided with limiting grooves at positions corresponding to the cover opening, and the outer edge of the cover opening is fixed with a limiting switch, and the limiting switch is adapted to the limiting groove.

[0011] As a further solution of the utility model, the outer walls of the second cover plate and the working shell and the outer walls of the first cover plate and the second cover plate are all provided with grooves adapted to fit the pipe openings composed of the lower air guide pipe and the upper fitting pipe.

[0012] As a further solution of the utility model, the wind wheel includes a rotating sleeve arranged inside the working shell, the rotating sleeve is rotatably connected to the working shell, an air guide plate is arranged on the rotating sleeve, the air guide plate is fixedly connected to the rotating sleeve, an air guide plate is arranged inside the air guide plate, and a plurality of air guide plates are arranged in a circle with the center of the air guide plate as the center.

[0013] As a further solution of the utility model, a motor box is fixed on the top of the first cover plate, the motor is fixed in the motor box, and the output shaft of the motor passes through the first cover plate and is adapted to the rotating sleeve.

[0014] The beneficial effects of the utility model are:

[0015] The utility model: is provided with a working shell, an air outlet shell, a first cover plate, a second cover plate, a motor, a wind wheel, and an air guide component. The air guide component includes a lower air guide duct, an upper fitting tube, a limit groove, a cover port, a limit switch and an air outlet bent pipe, etc. The upper fitting tube is fixed to the inner wall of the second cover plate and fits with the lower air guide duct. The above-mentioned design means can smoothly introduce the wind flow inside the working shell from the air guide component into the interior of the air outlet shell, and discharge it from the air outlet from the air outlet bent pipe, so that the wind flow accumulates more, and the first cover plate and the second cover plate can be disassembled to separate the upper fitting tube and the lower air guide duct, and further, the cover port and the air outlet bent pipe connected thereto can be disassembled, which is convenient for disassembly and cleaning, and convenient for subsequent installation, so that it can be kept clean and the air outlet is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an air intake mechanism of a low-nitrogen burner proposed by the utility model;

[0017] Figure 2 It is a partially expanded three-dimensional structural schematic diagram of an air intake mechanism of a low-nitrogen burner proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the expanded three-dimensional structure of an air guide assembly of an air intake mechanism of a low-nitrogen burner proposed by the utility model;

[0019] Figure 4 This is a partial three-dimensional structural schematic diagram of an air intake mechanism of a low-nitrogen burner proposed by the utility model.

[0020] In the figure: 1. working shell; 2. air outlet shell; 3. first cover plate; 4. second cover plate; 5. motor box; 6. notch; 7. lower air guide duct; 8. upper fitting tube; 9. limiting groove; 10. cover opening; 11. limiting switch; 12. air outlet elbow; 13. connecting block; 14. air guide disc; 15. rotating sleeve; 16. air guide plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Reference Figure 1-Figure 4 , an air intake mechanism for a low nitrogen burner, comprising a working shell 1 and an air outlet shell 2, the working shell 1 and the air outlet shell 2 are connected by a U-shaped channel, a first cover plate 3 is installed on the working shell 1 by screws, a second cover plate 4 is installed on the air outlet shell 2 by screws, a wind wheel is arranged inside the working shell 1, a driving motor for driving the wind wheel to rotate is arranged on the first cover plate 3, and an air guide component is arranged inside the air outlet shell 2;

[0024] The air guide assembly includes a lower air guide duct 7, which is located at one end of the air outlet shell 2 and is equipped with a detachable air outlet bend duct 12, and the bottom of the air outlet bend duct 12 faces the air outlet of the air outlet shell 2. An upper fitting tube 8 is fixed to the top of the inner wall of the second cover plate 4 and is fitted with the top of the lower air guide duct 7.

[0025] In this embodiment, a connecting block 13 is fixed to the bottom of the lower air duct 7 , and the connecting block 13 is fixed to the inner wall of the air outlet housing 2 .

[0026] In this embodiment, a cover opening 10 is provided on the inner wall of the lower air duct 7 near the outlet curved pipe 12 , and the cover opening 10 is fixed to the outlet curved pipe 12 . A hole is provided on the lower air duct 7 for the outlet curved pipe 12 to pass through.

[0027] In this embodiment, the inner wall of the lower air duct 7 and the inner wall of the upper fitting tube 8 are provided with limiting grooves 9 corresponding to the position of the cover opening 10, and the outer edge of the cover opening 10 is fixed with limiting switches 11, which are adapted to the limiting grooves 9.

[0028] In this embodiment, the outer walls of the second cover plate 4 and the working shell 1 and the outer walls of the first cover plate 3 and the second cover plate 4 are all provided with slots 6 adapted to fit the pipe openings composed of the lower air guide pipe 7 and the upper fitting pipe 8 .

[0029] In this embodiment, the wind wheel includes a rotating sleeve 15 arranged inside the working shell 1, the rotating sleeve 15 is rotatably connected to the working shell 1, an air guide disc 14 is arranged on the rotating sleeve 15, the air guide disc 14 is fixedly connected to the rotating sleeve 15, an air guide plate 16 is arranged inside the air guide disc 14, and a plurality of air guide plates 16 are arranged in a circle with the center of the air guide disc 14 as the center.

[0030] In this embodiment, a motor box 5 is fixed on the top of the first cover plate 3 , the motor is fixed in the motor box 5 , and the output shaft of the motor passes through the first cover plate 3 and is adapted to the rotating sleeve 15 .

[0031] Working principle: When in use, a working shell 1, an air outlet shell 2, a first cover plate 3, a second cover plate 4, a motor, a wind wheel, and an air guide assembly are provided. The air guide assembly includes a lower air guide duct 7, an upper fitting tube 8, a limiting groove 9, a cover opening 10, a limiting switch 11 and an air outlet curved pipe 12, etc. The upper fitting tube 8 is fixed to the inner wall of the second cover plate 4 and fits with the lower air guide duct 7. The above-mentioned design means can smoothly guide the wind flow inside the working shell 1 from the air guide assembly into the interior of the air outlet shell 2, and discharge it from the air outlet from the air outlet curved pipe 12, so that the wind flow accumulates more, and the first cover plate 3 and the second cover plate 4 can be disassembled to separate the upper fitting tube 8 and the lower air guide duct 7, and further, the cover opening 10 and the air outlet curved pipe 12 connected thereto can be disassembled to facilitate disassembly and cleaning, and to facilitate subsequent installation, so that it can be kept clean and the air outlet is better.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air intake mechanism for a low-nitrogen burner, comprising a working shell (1) and an air outlet shell (2), wherein the working shell (1) and the air outlet shell (2) are connected via a U-shaped channel, characterized in that: A first cover plate (3) is mounted on the working shell (1) by means of screws, a second cover plate (4) is mounted on the air outlet shell (2) by means of screws, a wind wheel is arranged inside the working shell (1), a driving motor for driving the wind wheel to rotate is arranged on the first cover plate (3), and an air guide assembly is arranged inside the air outlet shell (2); The air guide assembly comprises a lower air guide duct (7), the lower air guide duct (7) being located at one end of the air outlet shell (2) and being provided with a detachable air outlet curved pipe (12), and the bottom of the air outlet curved pipe (12) is oriented toward the air outlet of the air outlet shell (2), and an upper fitting pipe (8) fitting with the top of the lower air guide duct (7) is fixed to the top of the inner wall of the second cover plate (4).

2. A low nitrogen burner air intake mechanism according to claim 1, characterized in that: A connecting block (13) is fixed to the bottom of the lower air guide pipe (7), and the connecting block (13) is fixed to the inner wall of the air outlet housing (2).

3. A low nitrogen burner air intake mechanism according to claim 2, characterized in that: A hood opening (10) is provided on the inner wall of the lower air guide duct (7) near the outlet curved pipe (12), and the hood opening (10) is fixed to the outlet curved pipe (12). A hole is provided on the lower air guide duct (7) for the outlet curved pipe (12) to pass through.

4. A low nitrogen burner air intake mechanism according to claim 3, characterized in that: The inner wall of the lower air guide pipe (7) and the inner wall of the upper fitting pipe (8) are both provided with a limiting groove (9) at a position corresponding to the cover opening (10), and the outer edge of the cover opening (10) is fixed with a limiting switch (11), and the limiting switch (11) is adapted to the limiting groove (9).

5. The low nitrogen burner air intake mechanism according to claim 4, characterized in that: The outer walls of the second cover plate (4) and the working shell (1) and the outer walls of the first cover plate (3) and the second cover plate (4) are all provided with slots (6) adapted to fit the pipe openings formed by the lower air guide pipe (7) and the upper fitting pipe (8).

6. A low nitrogen burner air intake mechanism according to claim 5, characterized in that: The wind wheel comprises a rotating sleeve (15) arranged inside a working shell (1), the rotating sleeve (15) being rotatably connected to the working shell (1), an air guide disc (14) being arranged on the rotating sleeve (15), the air guide disc (14) being fixedly connected to the rotating sleeve (15), an air guide plate (16) being arranged inside the air guide disc (14), a plurality of air guide plates (16) being arranged in a circle with the center of the air guide disc (14) as the center.

7. The low nitrogen burner air intake mechanism according to claim 6, characterized in that: A motor box (5) is fixed on the top of the first cover plate (3), the motor is fixed in the motor box (5), and the output shaft of the motor passes through the first cover plate (3) and is adapted to the rotating sleeve (15).

Images