Low-nitrogen combustor

Abstract

The utility model discloses a low-nitrogen combustor, and belongs to the technical field of combustors. Comprising a burner body and a fan, the two ends of the fan are connected with an air supply pipe and an air inlet pipe correspondingly, the air supply pipe communicates with the burner body, the outer end of the air inlet pipe is connected with a filtering air duct, and a columnar adjusting valve is connected into the filtering air duct in a penetrating mode from top to bottom; the bottom of the adjusting valve is connected with the lower side wall of the filtering air duct through a bearing, the upper end of the adjusting valve is connected with an operation board, a through hole is formed in the middle of the adjusting valve, the through hole and the air inlet pipe are the same in height and consistent in central axis, and a filtering net is fixed in the outer end of the filtering air duct. The regulating valve and the filter screen are arranged in the structure, the filter screen plays a role in filtering dust in air in the air inlet pipe, communication and separation of the fan and the filter air duct can be achieved through rotation of the regulating valve, when the filter screen is cleaned, raised dust cannot enter the fan from the air inlet pipe, and insufficient combustion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a low-nitrogen burner. Background Art

[0002] Low-nitrogen burners can obtain optimal combustion parameters by adjusting the combustion air and the combustion head. Burners are important equipment on industrial oil boilers and gas boilers. They ensure stable ignition and combustion of the fuel and complete combustion of the fuel. The staff uses the electrical control box to operate the fan, which blows air into the mixing cylinder. Natural gas enters the mixing cylinder through the gas pipe. The ignition component causes the natural gas and the oxygen in the air to burn at the end of the mixing cylinder away from the air outlet, and the direct current wind is converted into swirling wind through the stable combustion hood to promote the mixing of oxygen and natural gas.

[0003] When the fan delivers air into the burner body, dust is easily delivered into the interior, which will cause incomplete combustion and reduce efficiency. The prior art generally adds a filter to the structure to filter the air delivered by the fan, but the filter needs to be cleaned. When the filter is removed for cleaning, dust is easy to flow with the air into the air inlet pipe 4 of the fan and even into the fan, and inevitably follows the air into the burner body. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a low-nitrogen burner.

[0005] The utility model is realized by the following technical solutions:

[0006] A low-nitrogen burner comprises a burner body and a fan, wherein two ends of the fan are respectively connected to an air supply pipe and an air inlet pipe, the air supply pipe is communicated with the burner body, the outer end of the air inlet pipe is connected to a filter air duct, the interior of the filter air duct is penetrated from top to bottom by a regulating valve, the regulating valve is columnar, the bottom of the regulating valve is connected to the lower side wall of the filter air duct through a bearing, the upper end of the regulating valve is connected to an operating panel, a through hole is opened in the middle of the regulating valve, the through hole is at the same height as the air inlet pipe, and the central axes of the two are consistent, and a filter screen is fixed inside the outer end of the filter air duct.

[0007] The filter screen is connected with the interior of the filter air duct by snapping.

[0008] A scale plate is provided on the surface of the operating panel.

[0009] A flow meter is connected to the side of the air inlet pipe.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model provides a regulating valve and a filter in the structure. The filter plays a role of filtering dust in the air of the air inlet pipe. The fan and the filter air duct can be connected and separated by the rotation of the regulating valve. When the filter is cleaned, the raised dust will not enter the inside of the fan from the air inlet pipe, so that the dust can be prevented from entering the burner body, thereby avoiding incomplete combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the regulating valve of the utility model.

[0014] In the figure: 1. Burner body; 2. Fan; 3. Air supply pipe; 4. Air inlet pipe; 5. Regulating valve; 6. Operating panel; 7. Bearing; 8. Filter air duct; 9. Filter screen; 10. Through hole; 11. Dial; 12. Flow meter. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] As shown in the attached figure of the instruction manual Figure 1 As shown in Figure 2, a low-nitrogen burner comprises a burner body 1 and a fan 2, wherein the two ends of the fan 2 are respectively connected with an air supply pipe 3 and an air inlet pipe 4, the air supply pipe 3 is communicated with the burner body 1, the outer end of the air inlet pipe 4 is connected with a filter air duct 8, the inside of the filter air duct 8 is penetrated from top to bottom with a regulating valve 5, the regulating valve 5 is columnar, the bottom of the regulating valve 5 is connected to the lower side wall of the filter air duct 8 through a bearing 7, the upper end of the regulating valve 5 is connected with an operating panel 6, the middle part of the regulating valve 5 is provided with a through hole 10, the through hole 10 is at the same height as the air inlet pipe 4, and the central axes of the two are consistent, and a filter screen 9 is fixed inside the outer end of the filter air duct 8.

[0017] The filter screen 9 is connected to the interior of the filter air duct 8 by snap-fitting.

[0018] A scale plate 11 is disposed on the surface of the operating panel 6 .

[0019] A flow meter 12 is connected to the side of the air inlet pipe 4 .

[0020] Example 1

[0021] A low-nitrogen burner comprises a burner body 1 and a fan 2, wherein two ends of the fan 2 are respectively connected with an air supply pipe 3 and an air inlet pipe 4, the air supply pipe 3 is communicated with the burner body 1, the outer end of the air inlet pipe 4 is connected with a filter air duct 8, the inside of the filter air duct 8 is penetrated and connected with a regulating valve 5 from top to bottom, the regulating valve 5 is columnar, the bottom of the regulating valve 5 is connected to the lower side wall of the filter air duct 8 through a bearing 7, the upper end of the regulating valve 5 is connected with an operating panel 6, a through hole 10 is opened in the middle of the regulating valve 5, the through hole 10 is at the same height as the air inlet pipe 4, and the central axes of the two are consistent, and a filter screen 9 is fixed inside the outer end of the filter air duct 8.

[0022] The filter screen 9 is connected to the interior of the filter air duct 8 by snap-fitting.

[0023] In this embodiment, a dial 11 is provided on the surface of the operating panel 6, and the dial 11 can be used to determine the rotation amplitude of the operating panel 6, thereby determining the relative position of the through hole 10 and the air inlet pipe 4. If the through hole 10 is connected to the air inlet pipe 4, it is determined that the regulating valve is open; if the through hole 10 is completely not relative to the air inlet pipe 4, it is determined that the regulating valve is closed, thereby achieving the connection and isolation between the fan and the filter air duct.

[0024] The air flow rate can be adjusted by rotating the regulating valve and further accurately measured by the flow meter.

[0025] A flow meter 12 is connected to the side of the air inlet pipe 4 to facilitate measuring the air volume flow.

[0026] In this embodiment, the utility model provides a regulating valve 5 and a filter 9 in the structure. The filter 9 plays a role in filtering dust in the air of the air inlet pipe. The fan 2 and the filter air duct 8 can be connected and isolated by rotating the regulating valve 5. When the filter 9 is cleaned, the raised dust will not enter the interior of the fan from the air inlet pipe, which can prevent dust from entering the burner body and avoid incomplete combustion.

[0027] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications to the shapes, structures, features and spirits described in the claims of the present invention should be included in the claims of the present invention.

Claims

1. A low nitrogen burner, characterized in that: The invention comprises a burner body (1) and a fan (2), wherein the two ends of the fan (2) are respectively connected to an air supply pipe (3) and an air inlet pipe (4), wherein the air supply pipe (3) is communicated with the burner body (1), wherein the outer end of the air inlet pipe (4) is connected to a filter air duct (8), wherein a regulating valve (5) is connected to the inside of the filter air duct (8) from top to bottom, wherein the regulating valve (5) is columnar, wherein the bottom of the regulating valve (5) is connected to the lower side wall of the filter air duct (8) via a bearing (7), wherein the upper end of the regulating valve (5) is connected to an operating panel (6), wherein a through hole (10) is provided in the middle of the regulating valve (5), wherein the through hole (10) is at the same height as the air inlet pipe (4), and wherein the central axes of the two are consistent, and a filter screen (9) is fixed inside the outer end of the filter air duct (8).

2. A low nitrogen burner according to claim 1, characterized in that: The filter screen (9) is connected to the interior of the filter air duct (8) by snap-fitting.

3. A low nitrogen burner according to claim 1, characterized in that: The surface of the operating panel (6) is provided with a scale plate (11).

4. A low nitrogen burner according to claim 1, characterized in that: A flow meter (12) is connected to the side of the air inlet pipe (4).

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