Combustion nozzle structure of combustor for suspension kiln

Abstract

The utility model relates to the technical field of suspension kiln combustors, in particular to a combustion nozzle structure of a combustor for a suspension kiln, which comprises a first air duct and an ignition mechanism, a second air duct is arranged in the first air duct, a third air duct is arranged in the second air duct, a rectification air duct is arranged in the third air duct, and the ignition mechanism is arranged in the rectification air duct. First air plates are evenly and fixedly connected to the inner wall of the first air cylinder, second air plates are evenly and fixedly connected to the inner wall of the second air cylinder, air grooves are evenly formed in one end of the rectifying air cylinder, a baffle is fixedly connected to one end of the rectifying air cylinder, and an inner pipe is arranged in the rectifying air cylinder. And air holes are uniformly formed in one side of the baffle plate. According to the device, the length and the diameter of flame can be adjusted according to use requirements, so that the combustion area of the flame is adjusted, the lining of the suspension kiln can be protected, the device is easy and convenient to use, the utilization rate of fuel gas can be increased, and the use cost of a user is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension kiln burners, in particular to a combustion nozzle structure of a burner for a suspension kiln. Background Technique

[0002] A suspension furnace is a kind of kiln furnace in which fine-grained or powdered materials are suspended in a hot gas stream under the action of a heat-carrying gas, and intense heat and mass transfer processes occur between the gas and the solid. In the suspension furnace, the materials are in a suspended state, and the heat and mass transfer rates are much higher than those in a fixed bed and a fluidized bed. The gas in the furnace is in a state of intense turbulence, the fuel burns evenly, the furnace temperature is uniform, and the materials are heated evenly. Moreover, the structure is simple and the operation is convenient. In the suspension furnace, the collection of materials must be obtained after the separation of the gas-solid two phases. The burner of the suspension kiln is installed perpendicular to it, which is completely different from the traditional rotary kiln, especially the combustion nozzle of the burner;

[0003] At present, during the use of the combustion nozzles of some burners of existing suspension kilns, the diameter and length of the flame cannot be adjusted, so that the combustion area of the flame is in a fixed state. When the length is too long, it is very easy to burn out the inner lining of the suspension kiln, thereby increasing the user's use cost. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the above background technique, and to propose a combustion nozzle structure of a burner for a suspension kiln.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A combustion nozzle structure of a burner for a suspension kiln, including a first air duct and an ignition mechanism. A second air duct is arranged inside the first air duct, a third air duct is arranged inside the second air duct, a rectifying air duct is arranged inside the third air duct, and one end of the rectifying air duct is fixedly connected to the inner wall of the third air duct. The inner wall of the first air duct is evenly and fixedly connected with first air plates, and one end of each first air plate is fixedly connected to the surface of the second air duct. The inner wall of the second air duct is evenly and fixedly connected with second air plates, and one end of each second air plate is fixedly connected to the surface of the third air duct. One end of the rectifying air duct is evenly provided with air grooves, and one side of each air groove is in contact with the inner wall of the third air duct. A baffle is fixedly connected to one end of the rectifying air duct. An inner pipe is arranged inside the rectifying air duct, and one end of the inner pipe is fixedly connected to the baffle. Air holes are evenly arranged on one side of the baffle.

[0006] Preferably, the first air plates are all inclined, and the inclination angle of the first air plates is 40 to 70 degrees, which is convenient for the air between the first air duct and the second air duct to form a first swirling air flow.

[0007] Preferably, the second air plates are all inclined, and the inclination angle of the second air plates is 25 to 35 degrees, which is convenient for the gas between the second air cylinder and the third air cylinder to form a second swirling air flow.

[0008] Preferably, the air grooves are all inclined, the inclination angle of the air grooves is 30 to 40 degrees, and the inclination directions of the first air plate, the second air plate and the air grooves are the same, which is convenient for the air between the third air cylinder and the rectifying air cylinder to form a third swirling air flow.

[0009] Preferably, the ignition mechanism includes an ignition plate, a gas pipe, a nozzle, an ignition tube and an igniter. The inner wall of the baffle is fixedly connected with the ignition plate. One side of the ignition plate is connected with the gas pipe. One end of the gas pipe is connected with the nozzle, and the nozzle is located on one side of the ignition plate. One side of the ignition plate is connected with the ignition tube, and the ignition tube is located at the bottom of the gas pipe. The igniter is arranged inside the ignition tube, and one end of the igniter is located at the bottom of the nozzle, which is convenient for the user to light the device.

[0010] Preferably, the control end of the igniter is electrically connected to an external power supply through an external switch, which is convenient for the user to control the igniter to work.

[0011] Preferably, a connecting air cylinder is arranged inside one end of the rectifying air cylinder. Assembly holes are symmetrically arranged at one end of the rectifying air cylinder, and the mutually adjacent ends of the assembly holes are all in contact with the surface of the connecting air cylinder, which is convenient for the user to assemble the device.

[0012] Preferably, the outer diameter of the connecting air cylinder is adapted to the inner diameter of the rectifying air cylinder, which is convenient for the connection of the connecting air cylinder and the rectifying air cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] By setting the first air deflector with an inclination angle of 40 to 70 degrees, a first swirling air current can be blown out. By setting the second air deflector with an inclination angle of 25 to 35 degrees, a second swirling air current can be blown out. The gas is also ejected between the second air duct and the third air duct. At this time, the ejected gas is a rotating air current. By setting the air chute with an inclination angle of 30 to 40 degrees, a third swirling air current can be blown out. When the device is in use, the gas is discharged outward through the gas pipe and the nozzle. At this time, it can be ignited by the igniter. At the same time, the air between the rectifying air duct and the inner pipe can be discharged through the air holes on the surface of the baffle. At this time, the neutral air discharged through the air holes can play a role in assisting combustion, making it more convenient for the gas discharged from the nozzle to be ignited. Then the gas is discharged between the second air duct and the third air duct again. The main function of the first swirling air current is to pull the gas outward, making the gas fully mixed with the air in the external environment and improving the combustion efficiency. The second swirling air current is the gas, which mainly ejects the gas along the radial direction, increasing the flame diameter and fully mixing the external air at the same time, increasing the flame area and further improving the combustion efficiency. The normal usage amount of the third swirling air current is less than that of the first one. Its main function is to adjust the diameter of the flame. If the flame is too thin and the combustion area of the flame is small at this time, then the third swirling air current is increased. Otherwise, the third swirling air current is decreased. When the gas ejected between the second air duct and the third air duct is ignited, the neutral air discharged through the air holes can also improve the stability of the flame. This device can adjust the length and diameter of the flame according to the usage requirements, thereby adjusting the combustion area of the flame, and then being able to protect the inner lining of the suspension kiln. It is not only simple and convenient to use, but also can improve the utilization rate of the gas, thus reducing the user's usage cost. Brief Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0016] Figure 2 is a first sectional three-dimensional schematic diagram of the present utility model;

[0017] Figure 3 is a second sectional three-dimensional schematic diagram of the present utility model;

[0018] Figure 4 is an exploded three-dimensional schematic diagram of the present utility model.

[0019] In the figure: 1, the first air duct; 2, the second air duct; 3, the third air duct; 4, the rectifying air duct; 5, the first air deflector; 6, the second air deflector; 7, the air chute; 8, the inner pipe; 9, the baffle; 10, the air holes; 11, the ignition plate; 12, the gas pipe; 13, the nozzle; 14, the ignition pipe; 15, the igniter; 16, the connecting air duct; 17, the assembly hole. Detailed Description of the Preferred Embodiment

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , an embodiment provided by the present utility model:

[0022] A combustion nozzle structure of a burner for a suspension kiln, including a first air duct 1 and an ignition mechanism. A second air duct 2 is arranged inside the first air duct 1, a third air duct 3 is arranged inside the second air duct 2, a rectifying air duct 4 is arranged inside the third air duct 3, and one end of the rectifying air duct 4 is fixedly connected to the inner wall of the third air duct 3. The inner wall of the first air duct 1 is uniformly and fixedly connected with first air plates 5, and one end of each first air plate 5 is fixedly connected to the surface of the second air duct 2. The inner wall of the second air duct 2 is uniformly and fixedly connected with second air plates 6, and one end of each second air plate 6 is fixedly connected to the surface of the third air duct 3. One end of the rectifying air duct 4 is uniformly provided with air slots 7, and one side of each air slot 7 is in contact with the inner wall of the third air duct 3. One end of the rectifying air duct 4 is fixedly connected with a baffle 9. An inner pipe 8 is arranged inside the rectifying air duct 4, and one end of the inner pipe 8 is fixedly connected to the baffle 9. A plurality of air holes 10 are uniformly arranged on one side of the baffle 9;

[0023] Furthermore, the ignition mechanism includes an ignition plate 11, a gas pipe 12, a nozzle 13, an ignition pipe 14, and an igniter 15. The ignition plate 11 is fixedly connected to the inner wall of the baffle 9. One side of the ignition plate 11 is connected with the gas pipe 12. One end of the gas pipe 12 is connected with the nozzle 13, and the nozzle 13 is located on one side of the ignition plate 11. One side of the ignition plate 11 is connected with the ignition pipe 14, and the ignition pipe 14 is located at the bottom of the gas pipe 12. The igniter 15 is arranged inside the ignition pipe 14, and one end of the igniter 15 is located at the bottom of the nozzle 13. When the device is in use, the gas is discharged outward through the gas pipe 12 and the nozzle 13. At this time, the igniter 15 can ignite it. At the same time, the air between the rectifying air duct 4 and the inner pipe 8 can be discharged through the air holes 10 on the surface of the baffle 9. At this time, the neutral air discharged through the air holes 10 can play a role in assisting combustion, making it more convenient to ignite the gas discharged from the nozzle 13 and facilitating the user to ignite the device;

[0024] Further, the control end of the igniter 15 is electrically connected to an external power supply through an external switch, which facilitates the user to control the igniter 15 to work. A connecting air duct 16 is arranged inside one end of the rectifying air duct 4. Assembly holes 17 are symmetrically arranged at one end of the rectifying air duct 4, and the mutually adjacent ends of the assembly holes 17 are all in contact with the surface of the connecting air duct 16, which facilitates the user to assemble the device. The outer diameter of the connecting air duct 16 is adapted to the inner diameter of the rectifying air duct 4, which facilitates the assembly of the connecting air duct 16 and the rectifying air duct 4. The first air plates 5 are all inclined, and the inclination angle of the first air plates 5 is 40 to 70 degrees, which facilitates the formation of a first swirling air flow between the first air duct 1 and the second air duct 2. The second air plates 6 are all inclined, and the inclination angle of the second air plates 6 is 25 to 35 degrees, which facilitates the formation of a second swirling air flow of the gas between the second air duct 2 and the third air duct 3. The air grooves 7 are all inclined, and the inclination angle of the air grooves 7 is 30 to 40 degrees. The inclination directions of the first air plates 5, the second air plates 6 and the air grooves 7 are all the same, which facilitates the formation of a third swirling air flow through the air between the third air duct 3 and the rectifying air duct 4.

[0025] Working principle: When the device is in use, the gas is discharged outward through the gas pipe 12 and the nozzle 13. At this time, the igniter 15 can ignite it. At the same time, the air between the rectifying air duct 4 and the inner pipe 8 can be discharged through the air holes 10 on the surface of the baffle 9. At this time, the neutral air discharged through the air holes 10 can play a role in assisting combustion, which is more convenient for the ignition of the gas discharged from the nozzle 13. Then the gas is discharged again through the second air duct 2 and the third air duct 3. By setting the first air plates 5 with an inclination angle of 40 to 70 degrees, a first swirling air flow can be blown out. By setting the second air plates 6 with an inclination angle of 25 to 35 degrees, a second swirling air flow can be blown out. At this time, the ejected gas is a rotating air flow. By setting the air grooves 7 with an inclination angle of 30 to 40 degrees, a third swirling air flow can be blown out. The main function of the first swirling air flow is to pull the gas outward, so that the gas is fully mixed with the air in the external environment, improving the combustion efficiency. The second swirling air flow is the gas, which mainly ejects the gas along the radial direction, increasing the flame diameter and fully mixing the outside air, increasing the flame area, and further improving the combustion efficiency. The normal amount of the third swirling air flow is less than that of the first one. Its main function is to adjust the diameter of the flame. If the flame is too thin and the combustion area of the flame is small at this time, then the third swirling air flow is increased, and vice versa. When the gas ejected between the second air duct 2 and the third air duct 3 is ignited, the neutral air discharged through the air holes 10 can also improve the stability of the flame. The device can adjust the length and diameter of the flame according to the use requirements, so as to adjust the combustion area of the flame, and then protect the inner lining of the suspension kiln. It is not only simple and convenient to use, but also can improve the utilization rate of the gas, thus reducing the user's use cost.

[0026] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights involved.

Claims

1. The structure of a combustion nozzle of a burner for a suspension kiln, characterized in that: It includes a first air duct (1) and an ignition mechanism. A second air duct (2) is arranged inside the first air duct (1). A third air duct (3) is arranged inside the second air duct (2). A rectifying air duct (4) is arranged inside the third air duct (3), and one end of the rectifying air duct (4) is fixedly connected to the inner wall of the third air duct (3). The inner wall of the first air duct (1) is uniformly and fixedly connected with first air plates (5), and one end of each first air plate (5) is fixedly connected to the surface of the second air duct (2). The inner wall of the second air duct (2) is uniformly and fixedly connected with second air plates (6), and one end of each second air plate (6) is fixedly connected to the surface of the third air duct (3). One end of the rectifying air duct (4) is uniformly provided with air grooves (7), and one side of each air groove (7) is in fit with the inner wall of the third air duct (3). One end of the rectifying air duct (4) is fixedly connected with a baffle (9). An inner tube (8) is arranged inside the rectifying air duct (4), and one end of the inner tube (8) is fixedly connected to the baffle (9). A plurality of air holes (10) are uniformly arranged on one side of the baffle (9).

2. The structure of the combustion nozzle of a burner for a suspension kiln according to claim 1, characterized in that: The first air plates (5) are all inclined, and the inclination angle of the first air plates (5) is 40 to 70 degrees.

3. The structure of the combustion nozzle of a burner for a suspension kiln according to claim 1, characterized in that: The second air plates (6) are all inclined, and the inclination angle of the second air plates (6) is 25 to 35 degrees.

4. The burner nozzle structure of a suspension kiln according to claim 1, characterized in that: The air grooves (7) are all inclined, the inclination angle of the air grooves (7) is 30 to 40 degrees, and the inclination directions of the first air plates (5), the second air plates (6) and the air grooves (7) are the same.

5. The combustion nozzle structure of a burner for a suspension kiln according to claim 1, characterized in that: The ignition mechanism includes an ignition plate (11), a gas pipe (12), a nozzle (13), an ignition tube (14) and an igniter (15). The ignition plate (11) is fixedly connected to the inner wall of the baffle (9). One side of the ignition plate (11) is connected with the gas pipe (12). One end of the gas pipe (12) is connected with the nozzle (13), and the nozzle (13) is located on one side of the ignition plate (11). One side of the ignition plate (11) is connected with the ignition tube (14), and the ignition tube (14) is located at the bottom of the gas pipe (12). The igniter (15) is arranged inside the ignition tube (14), and one end of the igniter (15) is located at the bottom of the nozzle (13).

6. The structure of a combustion nozzle of a burner for a suspension kiln according to claim 5, characterized in that: The control end of the igniter (15) is electrically connected to an external power supply through an external switch.

7. The burner nozzle structure of a suspension kiln according to claim 1, characterized in that: A connecting air duct (16) is arranged inside one end of the rectifying air duct (4). Assembly holes (17) are symmetrically arranged at one end of the rectifying air duct (4), and the mutually approaching ends of the assembly holes (17) are in fit with the surface of the connecting air duct (16).

8. The structure of the combustion nozzle of a burner for a suspension kiln according to claim 7, characterized in that: The outer diameter of the connecting air duct (16) is adapted to the inner diameter of the rectifying air duct (4).

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