Graded low-nitrogen combustor of hot blast stove

Abstract

The utility model discloses a hot-blast stove grading low-nitrogen combustor which comprises a combustor body, the top of the combustor body is fixedly connected with an ignition rod, one side of the combustor body is fixedly connected with a feeding pipe, the outer wall of the feeding pipe is fixedly connected with a first air pipe, and the first air pipe is fixedly connected with a second air pipe. A first air pipe is fixedly connected to one side of the burner body, a second air pipe is fixedly connected to the other side of the burner body, a nozzle is fixedly connected to one end of the burner body, a limiting plate is fixedly connected to the inner wall of the burner body, the feeding pipe communicates with the interior of the burner body, and the feeding pipe is of an L-shaped structure. According to the device, the burner body, the ignition rod, the feeding pipe, the first air pipe, the second air pipe, the nozzle and the limiting plate are arranged, so that the function of graded air supply is achieved, the combustion-supporting rate is improved, the problem of insufficient combustion is solved, the working requirements of people are met, and the device is worthy of application and popularization.

Description

Technical Field

[0001] The utility model belongs to the technical direction of low-nitrogen burners, and specifically relates to a graded low-nitrogen burner for a hot blast furnace. Background Art

[0002] A burner is a device that sprays fuel and air in a certain way for mixed combustion. Burners are widely used in various equipment, including hot air furnaces. With the continuous development of technology, there are more and more types of burners, including low-nitrogen burners, which are more environmentally friendly than traditional burners.

[0003] The existing low-nitrogen burners are not convenient for graded air supply during use, which results in uneven fusion of fuel and air, and thus makes it impossible for the fuel to burn fully after subsequent ignition. This phenomenon has become a problem that needs to be solved urgently by people in this field. Utility Model Content

[0004] The utility model aims to provide a graded low-nitrogen burner for a hot blast furnace in view of the existing device, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a graded low-nitrogen burner for a hot blast furnace, comprising a burner body, an ignition rod fixedly connected to the top of the burner body, a feed pipe fixedly connected to one side of the burner body, a first air duct fixedly connected to the outer wall of the feed pipe, a second air duct fixedly connected to the other side of the burner body, a nozzle fixedly connected to one end of the burner body, and a limit plate fixedly connected to the inner wall of the burner body. By providing the burner body, the ignition rod, the feed pipe, the first air duct, the second air duct, the nozzle and the limit plate, the function of graded air supply is realized, which is beneficial to improve the combustion-supporting rate, solves the problem of insufficient combustion, meets people's work needs, and is worthy of popularization and use.

[0006] Furthermore, the feed pipe is interconnected with the interior of the burner body, and the feed pipe is an "L"-shaped structure, which facilitates the addition of fuel through the feed pipe.

[0007] Furthermore, the feed pipe and the first air duct are interconnected, and the first air duct is an "L"-shaped structure, which facilitates the addition of air and mixing through the first air duct when the fuel flows inside the feed pipe.

[0008] Furthermore, the second air duct is interconnected with the interior of the burner body, and the air inlets of the first air duct and the second air duct are distributed in opposite directions, which facilitates the second air duct to remix the fuel initially mixed into the air.

[0009] Furthermore, the second air duct is distributed in an "L" shape, and the outlet of the second air duct is located above the limiting plate, thereby ensuring that the air is mixed into the fuel again through the second air duct.

[0010] Furthermore, the limiting plate is inclined when viewed from the front, and the outlet of the feed pipe is located below the limiting plate, which facilitates the guiding and limiting of the fuel.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0012] (1) By providing a burner body, an ignition rod, a feed pipe, a first air duct, a second air duct, a nozzle and a limit plate, the function of graded air supply is realized, which is beneficial to improving the combustion support rate, solving the problem of insufficient combustion, meeting people's work needs, and is worthy of promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side view schematic diagram of the utility model;

[0016] Figure 3 It is a front sectional schematic diagram of the utility model.

[0017] In the figure: 1. burner body; 2. ignition rod; 3. feed pipe; 4. first air duct; 5. second air duct; 6. nozzle; 7. limit plate. DETAILED DESCRIPTION

[0018] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0019] See also Figure 1-3The utility model provides a technical solution: a graded low-nitrogen burner for a hot blast furnace, comprising a burner body 1, an ignition rod 2 fixedly connected to the top of the burner body 1, a feed pipe 3 fixedly connected to one side of the burner body 1, a first air duct 4 fixedly connected to the outer wall of the feed pipe 3, a second air duct 5 fixedly connected to the other side of the burner body 1, a nozzle 6 fixedly connected to one end of the burner body 1, and a limiting plate 7 fixedly connected to the inner wall of the burner body 1. By arranging the burner body 1, the ignition rod 2, the feed pipe 3, the first air duct 4, the second air duct 5, the nozzle 6 and the limiting plate 7, the function of graded air supply is realized, which is beneficial to improve the combustion-supporting rate, solves the problem of insufficient combustion, meets people's work needs, and is worthy of popularization and use.

[0020] Furthermore, the feed pipe 3 is interconnected with the interior of the burner body 1 , and the feed pipe 3 is an “L”-shaped structure, which facilitates adding fuel through the feed pipe 3 .

[0021] Furthermore, the feed pipe 3 and the first air pipe 4 are interconnected, and the first air pipe 4 is an "L"-shaped structure, which facilitates the addition of air and mixing through the first air pipe 4 when the fuel flows inside the feed pipe 3.

[0022] Furthermore, the second air duct 5 is interconnected with the interior of the burner body 1, and the air inlets of the first air duct 4 and the second air duct 5 are distributed in opposite directions, which facilitates the second air duct 5 to remix the fuel initially mixed into the air.

[0023] Furthermore, the second air duct 5 is distributed in an “L” shape, and the outlet of the second air duct 5 is located above the limiting plate 7, which ensures that the air is mixed into the fuel again through the second air duct 5.

[0024] Furthermore, the limiting plate 7 is inclined when viewed from the front, and the outlet of the feed pipe 3 is located below the limiting plate 7, which facilitates the guiding and limiting of the fuel.

[0025] When in use, the fuel is first input into the burner body 1 through the feed pipe 3, and when the fuel is inside the feed pipe 3, air is input through the first air duct 4, so that the air and fuel are preliminarily mixed. After the fuel is input into the burner body 1, it flows under the guidance of the limit plate 7, and then the air input by the second air duct 5 is mixed with the fuel again, so that the air and fuel are mixed more evenly, which is convenient for starting the ignition rod 2 and burning the fuel more fully after ignition, thereby preventing waste caused by incomplete combustion.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A hot blast stove graded low nitrogen burner, comprising a burner body (1), characterized in that: An ignition rod (2) is fixedly connected to the top of the burner body (1), a feed pipe (3) is fixedly connected to one side of the burner body (1), a first air duct (4) is fixedly connected to the outer wall of the feed pipe (3), a second air duct (5) is fixedly connected to the other side of the burner body (1), a nozzle (6) is fixedly connected to one end of the burner body (1), and a limiting plate (7) is fixedly connected to the inner wall of the burner body (1).

2. A hot blast stove graded low nitrogen burner according to claim 1, characterized in that: The feed pipe (3) is in communication with the interior of the burner body (1), and the feed pipe (3) is an "L"-shaped structure.

3. A hot blast stove graded low nitrogen burner according to claim 1, characterized in that: The feed pipe (3) and the first air duct (4) are interconnected, and the first air duct (4) is an "L"-shaped structure.

4. A hot blast stove graded low nitrogen burner according to claim 1, characterized in that: The second air duct (5) is in communication with the interior of the burner body (1), and the air inlets of the first air duct (4) and the second air duct (5) are distributed in opposite directions.

5. The hot blast stove graded low nitrogen burner according to claim 1, characterized in that: The second air duct (5) is distributed in an "L" shape, and the outlet of the second air duct (5) is located above the limiting plate (7).

6. A hot blast stove graded low nitrogen burner according to claim 1, characterized in that: The limiting plate (7) is inclined when viewed from the front, and the outlet of the feed pipe (3) is located below the limiting plate (7).

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