Nozzle with opening adjustment structure

Abstract

The utility model discloses a nozzle with opening degree adjusting structure, including the spray pipe, its output end hingedly arranged with a plurality of annular distribution's first arc plate and second arc plate, each first arc plate all is located corresponding second arc plate far from the spray pipe axle center one side, and it can all rotate and present diffusion shape and spread to the side far from the spray pipe axle center, the diffusion bowl with filter hole is set up in the spray pipe, diffusion bowl is close to the spray pipe output end one side diameter is greater than its far from the spray pipe output end one side, control assembly, it includes the multiple transmission rod of hingedly arranged on each first arc plate and second arc plate and sets up on the spray pipe drive equipment. The utility model discloses can adjust the diffusion range of coal powder according to actual conditions, thus has improved the contact area of coal powder and air, makes the combustion more complete, and simultaneously this diffusion range can change according to the different of first arc plate and second arc plate rotation angle, thereby convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of pulverized coal burner technology, and in particular to a nozzle with an opening adjustment structure. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Pulverized coal burners are the core equipment of coal-fired boiler systems. Their function is to mix pulverized coal with combustion air in a predetermined ratio and inject it into the furnace, achieving efficient and stable combustion of the fuel by controlling combustion dynamics parameters. The nozzle, as a key actuator of the burner, plays a crucial role in fuel flow control, jet pattern adjustment, and aerodynamic field organization. Existing pulverized coal burner nozzles mostly adopt a fixed opening design, thus only able to spray pulverized coal within a fixed spray range. This method results in a fixed mixing ratio of pulverized coal and air, making it impossible to adjust the diffusion range of the pulverized coal. This easily leads to poor uniformity of the pulverized coal and air mixture, resulting in high unburned carbon loss and poor combustion efficiency. Therefore, a nozzle with an adjustable opening structure is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a nozzle with an opening adjustment structure, thereby enabling effective adjustment of the coal powder diffusion range.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a nozzle with an opening adjustment structure, comprising:

[0006] The nozzle has multiple first arc-shaped plates and second arc-shaped plates that are arranged in a ring at its output end. Each first arc-shaped plate is located on the side of the corresponding second arc-shaped plate away from the nozzle axis, and each of them can rotate to the side away from the nozzle axis and spread out in a diffused manner.

[0007] A diffuser funnel with filter holes is disposed inside a nozzle, wherein the diameter of the side of the diffuser funnel closer to the nozzle output end is larger than that of the side farther from the nozzle output end.

[0008] The control assembly includes a plurality of transmission rods hinged to each of the first and second arcuate plates and a drive device mounted on the nozzle, the drive device being capable of pulling each of the transmission rods to rotate the first and second arcuate plates.

[0009] Furthermore, the control component also includes a delay adjustment component, which can drive each of the second arc plates to rotate after the drive device is working and each of the first arc plates has unfolded to the corresponding angle.

[0010] Furthermore, the delay adjustment component includes a first guide ring and a second guide ring slidably disposed on the nozzle. The second guide ring is located on the side of the first guide ring away from the nozzle output end. The end of the transmission rod on each of the first arc plates away from the first arc plate is hinged to the first guide ring. The end of the transmission rod on each of the second arc plates away from the second arc plate is hinged to the second guide ring. The moving end of the drive device is connected to the first guide ring. A telescopic rod is disposed between the first guide ring and the second guide ring.

[0011] Furthermore, the nozzle includes a pipe body and a guide groove formed on the outer wall of the pipe body, the diffuser is disposed inside the pipe body, and the first guide ring and the second guide ring are slidably disposed at the corresponding guide grooves of the pipe body.

[0012] Furthermore, both the first and second arc-shaped plates are coated with a high-temperature resistant coating.

[0013] The beneficial effects of this utility model are reflected in:

[0014] This invention utilizes a drive device to pull and retract the transmission rods and control the rotation of the first and second arc-shaped plates at corresponding angles. Both the first and second arc-shaped plates rotate away from the nozzle axis and expand in a diffused manner. Coal powder and air are then sprayed through a conveying pipe to the output end of the nozzle. The air mixed with coal powder passes through a diffuser with filter holes and diffuses. This, combined with the rotation of the first and second arc-shaped plates at corresponding angles, allows for adjustment of the coal powder diffusion range according to actual conditions. This increases the contact area between the coal powder and air, resulting in more complete combustion. Furthermore, the diffusion range can be changed according to the rotation angles of the first and second arc-shaped plates, making it convenient to use. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a partial schematic diagram of the control components in this utility model;

[0017] Figure 3 In this utility model Figure 2 A partial view of A shown;

[0018] Figure 4 This is a partial cross-sectional view of the nozzle in this utility model.

[0019] In the picture:

[0020] 1. Nozzle; 11. Pipe body; 12. Guide groove; 13. Diffusion hopper; 2. First arc plate; 3. Second arc plate; 4. First guide ring; 5. Second guide ring; 6. Transmission rod; 7. Telescopic rod; 8. Drive device. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-4 This utility model discloses a nozzle with an opening adjustment structure, including a nozzle 1, the output end of which is hinged with a plurality of first arc plates 2 and second arc plates 3 arranged in a ring. Each first arc plate 2 is located on the side of the corresponding second arc plate 3 away from the axis of the nozzle 1, and each of them can rotate to the side away from the axis of the nozzle 1 and spread out in a diffused manner.

[0023] In one embodiment, a diffuser 13 with filter holes is provided inside the nozzle 1. The diameter of the diffuser 13 on the side closer to the output end of the nozzle 1 is larger than that on the side farther away from the output end of the nozzle 1. The device also includes a control component, which includes a plurality of transmission rods 6 hinged on each of the first arc plate 2 and the second arc plate 3 and a drive device 8 mounted on the nozzle 1. The drive device 8 can be a linear module. The drive device 8 can pull each transmission rod 6 to rotate the first arc plate 2 and the second arc plate 3.

[0024] In practice, the drive device 8 can pull and retract each transmission rod 6 and control the first arc plate 2 and the second arc plate 3 to rotate by a corresponding angle. After the first arc plate 2 and the second arc plate 3 rotate to the side away from the axis of the nozzle 1 and spread out in a diffused manner, the coal powder and air are sprayed to the output end of the nozzle 1 through the conveying pipe. At this time, the air mixed with coal powder will pass through the diffuser hopper 13 with filter holes and diffuse. With the first arc plate 2 and the second arc plate 3 rotating by a corresponding angle, the diffusion range of coal powder can be adjusted according to the actual situation, thus increasing the contact area between coal powder and air, making combustion more complete. At the same time, the diffusion range can be changed according to the different rotation angles of the first arc plate 2 and the second arc plate 3, which makes it convenient to use.

[0025] In one embodiment, the control component further includes a delay adjustment component, which can drive each second arc plate 3 to rotate after the drive device 8 is working and each first arc plate 2 has unfolded to the corresponding angle.

[0026] This design allows the control components to rotate and unfold the first arc plate 2 first during operation, and then the second arc plate 3 rotates after unfolding to the corresponding angle, without interfering with each other, thus improving safety.

[0027] In one embodiment, the delay adjustment component includes a first guide ring 4 and a second guide ring 5 slidably mounted on the nozzle 1. The second guide ring 5 is located on the side of the first guide ring 4 away from the output end of the nozzle 1. The end of the transmission rod 6 on each first arc plate 2 away from the first arc plate 2 is hinged to the first guide ring 4. The end of the transmission rod 6 on each second arc plate 3 away from the second arc plate 3 is hinged to the second guide ring 5. The moving end of the driving device 8 is connected to the first guide ring 4. A telescopic rod 7 is provided between the first guide ring 4 and the second guide ring 5. The mounting end and the telescopic end of the telescopic rod 7 are respectively connected to the first guide ring 4 and the second guide ring 5.

[0028] In practice, starting the drive device 8 enables the first guide ring 4 to move on the nozzle 1 towards the side closer to the second guide ring 5. When the second guide ring 5 moves, it first drives the first arc plate 2 to rotate away from the axis of the nozzle 1 with the connection point of the nozzle 1 as the center. When the second guide ring 5 moves, it drives the telescopic rod 7 to retract. When the telescopic rod 7 retracts to its shortest state, it pushes the second guide ring 5 to move together with the first guide ring 4. At this time, the second arc plate 3 will rotate after the first arc plate 2 has rotated by the corresponding angle. At this time, the first arc plate 2 and the second arc plate 3 rotate simultaneously without interfering with each other.

[0029] In one embodiment, the nozzle 1 includes a pipe body 11 and a guide groove 12 formed on the outer wall of the pipe body 11. The diffuser 13 is disposed inside the pipe body 11. The first guide ring 4 and the second guide ring 5 are slidably installed at the corresponding guide groove 12 of the pipe body 11.

[0030] With this design, the guide groove 12 allows the first guide ring 4 and the second guide ring 5 to have corresponding movement ranges. This method can prevent the first guide ring 4 and the second guide ring 5 from completely detaching from the tube body 11, so as to facilitate practical use.

[0031] In one embodiment, both the first arc plate 2 and the second arc plate 3 are coated with a high-temperature resistant coating, and both the first arc plate 2 and the second arc plate 3 can be made of high-temperature resistant materials, thereby improving their service life in high-temperature environments.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Additionally, "multiple" refers to two or more.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nozzle with an opening adjustment structure, characterized in that, include: The nozzle (1) has multiple first arc plates (2) and second arc plates (3) arranged in a ring at its output end. Each first arc plate (2) is located on the side of the corresponding second arc plate (3) away from the axis of the nozzle (1), and they can all rotate to the side away from the axis of the nozzle (1) and spread out in a diffused manner. A diffuser bucket (13) with filter holes is disposed inside the nozzle (1), wherein the diameter of the side of the diffuser bucket (13) closer to the output end of the nozzle (1) is larger than that of the side farther away from the output end of the nozzle (1). The control assembly includes a plurality of transmission rods (6) hinged on each of the first arc plate (2) and the second arc plate (3) and a drive device (8) mounted on the nozzle (1), the drive device (8) being able to pull each of the transmission rods (6) to rotate the first arc plate (2) and the second arc plate (3); The control component also includes a delay adjustment component, which can drive each of the second arc plates (3) to rotate after the drive device (8) is working and each of the first arc plates (2) is unfolded to the corresponding angle; The delay adjustment component includes a first guide ring (4) and a second guide ring (5) that are slidably disposed on the nozzle (1). The second guide ring (5) is located on the side of the first guide ring (4) away from the output end of the nozzle (1). The end of the transmission rod (6) on each of the first arc plates (2) away from the first arc plate (2) is hinged to the first guide ring (4). The end of the transmission rod (6) on each of the second arc plates (3) away from the second arc plate (3) is hinged to the second guide ring (5). The moving end of the drive device (8) is connected to the first guide ring (4). A telescopic rod (7) is provided between the first guide ring (4) and the second guide ring (5).

2. The nozzle with an opening adjustment structure according to claim 1, characterized in that: The nozzle (1) includes a pipe body (11) and a guide groove (12) opened on the outer wall of the pipe body (11). The diffuser (13) is disposed inside the pipe body (11). The first guide ring (4) and the second guide ring (5) are slidably disposed at the corresponding guide groove (12) of the pipe body (11).

3. The nozzle with an opening adjustment structure according to claim 1, characterized in that: Both the first arc plate (2) and the second arc plate (3) are coated with a high-temperature resistant coating.

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