Boiler burner

Abstract

The utility model discloses a boiler burner, which comprises an outer cylinder, an inner cylinder, an inner cylinder and a burner, the separation part comprises a plurality of air deflectors arranged in the transverse section of the outer barrel, the air deflectors are arc-shaped and are distributed in the outer barrel in a conical shape by taking the axis of the transverse section of the outer barrel as the circle center, and the tip end of the conical shape faces the vertical section; the air guide strips are spirally distributed on the inner wall of the transverse section of the outer barrel, and the air guide strips are used for guiding hot air in the outer barrel to be spirally output; according to the utility model, the separation part is matched with the air guide strip, so that the pulverized coal is spirally sprayed out of the air duct, the accumulation of the pulverized coal in the air duct can be reduced, the pulverized coal can be more uniformly blown into a hearth to be in contact with an ignition position, the pulverized coal can be more uniformly and fully combusted in the hearth, and the combustion efficiency of the pulverized coal in the hearth is further improved.

Description

Technical Field

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

[0002] Boiler burner is an important energy conversion equipment, which is mainly used to mix fuel and air and burn them in the furnace to generate high-temperature and high-pressure steam or heat energy. It is often used in power generation, heating, industrial production and other fields.

[0003] When the boiler burner conveys pulverized coal, the pulverized coal is usually driven by hot air and passes through a curved section in the wind tube for centrifugal acceleration and is sprayed into the furnace with the air flow. However, since the ignition position of the furnace is fixed and the pulverized coal tends to gather in the middle of the wind tube during the conveying process, it is difficult for the pulverized coal to be sprayed out evenly from the wind tube, making it difficult for the pulverized coal to be fully and evenly burned in the furnace, affecting the combustion efficiency of the pulverized coal. Therefore, the present application specifically proposes a boiler burner that can evenly convey pulverized coal. Utility Model Content

[0004] The main purpose of the utility model is to provide a boiler burner which can evenly convey coal powder.

[0005] To achieve the above object, the utility model provides a boiler burner, comprising:

[0006] The outer cylinder comprises an L-shaped cylinder body composed of a vertical section and a horizontal section, wherein the vertical section of the outer cylinder is an air inlet for receiving and transporting hot air carrying coal powder, and the horizontal section of the outer cylinder is an air outlet;

[0007] A separation component, comprising a plurality of air guide plates arranged in the transverse section of the outer cylinder, each of the air guide plates being arc-shaped and distributed in the outer cylinder in a cone shape with the axis of the transverse section of the outer cylinder as the center, and the tip of the cone facing the vertical section;

[0008] A plurality of air guide strips are provided, each of which is spiral-shaped and distributed on the inner wall of the transverse section of the outer tube, each of which is arranged between the air guide plate and the air outlet of the outer tube, and each of which is used to guide the hot air in the outer tube to be spirally output.

[0009] Furthermore, a control component is provided in the outer cylinder, and the control component includes a positioning ring arranged in the transverse section of the outer cylinder, the positioning ring is coaxially arranged with the transverse section of the outer cylinder, and the middle part of each wind guide plate is rotatably connected with the positioning ring, and a gap is left between each wind guide plate and another adjacent wind guide plate for the wind guide plate to rotate, and also includes a pushing member arranged in the outer cylinder, and the pushing member is used to drive each of the wind guide plates to rotate synchronously with the corresponding rotating connection between the positioning ring as the rotation center.

[0010] Furthermore, the pushing component includes a pushing rod arranged in the transverse section of the outer cylinder and telescopically arranged along the length direction of the transverse section of the outer cylinder, each of the air guide plates is arranged around the pushing rod, and a connecting ring is provided on the telescopic end of the pushing rod, and a plurality of connecting rods are distributed on the connecting ring, each of the connecting rods corresponds to each of the air guide plates one by one, and one end of each of the connecting rods is rotatably connected to the connecting ring, and the other end is rotatably connected to an end of the corresponding air guide plate close to the air guide strip, when the telescopic end of the pushing rod moves, the pushing rod drives each of the air guide plates to rotate synchronously with the corresponding rotating connection between the positioning ring as the rotation center, and a support plate is provided under the pushing rod, the support plate is arranged between the corresponding two air guide plates and one end of the support plate is connected to the pushing rod, and the other end is connected to the inner wall of the outer cylinder, and the support plate is used to support and position the pushing rod.

[0011] Furthermore, a cleaning component is provided on the push rod, and the cleaning component includes a cleaning ring arranged on one end of the fixed end of the push rod close to the air guide strip, the cleaning ring is close to the surface of the telescopic end of the push rod, and when the telescopic end of the push rod is contracted, the cleaning ring is used to scrape off the coal powder attached to the telescopic end of the push rod, and a plurality of cleaning plates are distributed on the connecting ring, each of the cleaning plates is arc-shaped and circumferentially distributed on a side of the connecting ring close to the fixed end of the push rod, each of the cleaning plates is rotatably connected to the connecting ring, and a torsion spring is provided at the rotating connection between each cleaning plate and the connecting ring, the torsion spring is used to provide a torsion force to the corresponding cleaning plate in the direction close to the axis center of the transverse section of the outer cylinder, and the cleaning plate is used to remove the coal powder attached to the cleaning ring.

[0012] Furthermore, a wind shield is provided on one end of the fixed end of the push rod away from the connecting ring and arranged along the length direction of the transverse section of the outer cylinder. The wind shield is conical and is used to reduce the scouring of the push rod by coal powder.

[0013] The beneficial effects of the utility model are embodied in:

[0014] The utility model cooperates with the separation component and the air guide strip to make the coal powder be ejected from the wind tube in a spiral shape, which can reduce the aggregation of the coal powder in the wind tube, so that the coal powder can be blown into the furnace more evenly and contact the ignition point, so that the coal powder can be burned more evenly and fully in the furnace, and the combustion efficiency of the coal powder in the furnace is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional view of the front side of a boiler burner described in the utility model;

[0016] Figure 2 It is a first cross-sectional view of a boiler burner described in the utility model;

[0017] Figure 3 yes Figure 3 Magnified view at A in the middle;

[0018] Figure 4 It is a second cross-sectional view of a boiler burner described in the utility model;

[0019] Figure 5 This is an exploded view of the wind deflector.

[0020] Description of reference numerals:

[0021] 1. Outer cylinder; 2. Separation component; 21. Wind guide plate; 3. Wind guide strip; 4. Control component; 41. Positioning ring; 42. Pushing member; 421. Pushing rod; 422. Connecting ring; 423. Connecting rod; 424. Support plate; 5. Cleaning component; 51. Cleaning ring; 52. Cleaning plate; 6. Wind shield. Specific implementation plan

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0023] See also Figure 1-Figure 5 .

[0024] The utility model discloses a boiler burner, comprising:

[0025] The outer cylinder 1 includes an L-shaped cylinder body composed of a vertical section and a horizontal section, wherein the vertical section of the outer cylinder 1 is used to receive and transport hot air carrying coal powder, and the horizontal section of the outer cylinder 1 is an air outlet;

[0026] The separation component 2 includes a plurality of air guide plates 21 arranged in the transverse section of the outer cylinder 1, each air guide plate 21 is arc-shaped and is distributed in the outer cylinder 1 in a cone shape with the axis of the transverse section of the outer cylinder 1 as the center, and the tip of the cone faces the vertical section;

[0027] A plurality of air guide strips 3 are spirally distributed on the inner wall of the transverse section of the outer tube 1 , and each air guide strip 3 is arranged between the air guide plate 21 and the air outlet of the outer tube 1 , and each air guide strip 3 is used to guide the hot air in the outer tube 1 to be spirally output.

[0028] In a specific implementation, when the coal powder enters the outer cylinder 1 along with the hot air and passes through each air guide plate 21, each air guide plate 21 cooperates with each other to form a funnel-shaped frustum hood in the outer cylinder 1, and the diameter of the hood close to the air guide strip 3 is larger than the diameter of the hood away from the air guide strip 3. When the hot air passes through each air guide plate 21, a part of the hot air will carry the coal powder and flow along the inclined direction of the corresponding air guide plate 21 to the inner wall near the outer cylinder 1, and the remaining hot air passes through and flows from the center of the hood formed by each air guide plate 21. At this time, the hot air in the outer cylinder 1 is dispersed for the first time, and the hot air near the inner wall of the outer cylinder 1 drives the coal powder to rotate in the outer cylinder 1 along the spiral direction of the air guide strip 3, and drives the hot air at the center of the outer cylinder 1 to rotate, so that the coal powder is evenly ejected from the hood and fully burned in the furnace.

[0029] The utility model cooperates with the separation component 2 and the air guide strip 3 to make the coal powder spirally ejected from the wind tube, which can reduce the aggregation of coal powder in the wind tube, so that the coal powder can be blown into the furnace more evenly and contact the ignition point, so that the coal powder can burn more evenly and fully in the furnace, and the combustion efficiency of the coal powder in the furnace is further improved.

[0030] In one embodiment, a control component 4 is provided in the outer cylinder 1, and the control component 4 includes a positioning ring 41 arranged in the transverse section of the outer cylinder 1, the positioning ring 41 is coaxially arranged with the transverse section of the outer cylinder 1, and the middle part of each air guide plate 21 is rotatably connected with the positioning ring 41, and a gap is left between each air guide plate 21 and another adjacent air guide plate 21 for the air guide plate 21 to rotate, and also includes a pushing member 42 arranged in the outer cylinder 1, and the pushing member 42 is used to drive each air guide plate 21 to rotate synchronously with the corresponding rotating connection between the positioning ring 41 as the rotation center.

[0031] With this design, since the wind pressure in the outer tube 1 is constant, when the air flow speed in the air duct needs to be adjusted, the pushing component 42 drives each air guide plate 21 to rotate synchronously with the positioning ring 41 as the rotation center, thereby controlling the end of each air guide plate 21 close to the air guide strip 3 to be close to or away from the inner wall of the outer tube 1 to adjust the windward area of ​​each air guide plate 21 in the outer tube 1. According to actual work needs, the ejected air flow speed is adjusted by changing the windward area.

[0032] In one embodiment, the pushing member 42 includes a pushing rod 421 which is arranged in the transverse section of the outer cylinder 1 and is telescopically arranged along the length direction of the transverse section of the outer cylinder 1. Each wind guide plate 21 is arranged around the pushing rod 421. A connecting ring 422 is provided on the telescopic end of the pushing rod 421. A plurality of connecting rods 423 are distributed on the connecting ring 422. Each connecting rod 423 corresponds to each wind guide plate 21 one by one, and one end of each connecting rod 423 is rotatably connected to the connecting ring 422, and the other end is rotatably connected to an end of the corresponding wind guide plate 21 close to the wind guide strip 3. When the telescopic end of the pushing rod 421 moves, the pushing rod 421 drives each wind guide plate 21 to rotate synchronously with the corresponding rotating connection between the positioning ring 41 as the rotation center. A supporting plate 424 is provided below the pushing rod 421. The supporting plate 424 is arranged between the corresponding two wind guide plates 21 and one end of the supporting plate 424 is connected to the pushing rod 421, and the other end is connected to the inner wall of the outer cylinder 1. The supporting plate 424 is used to support and position the pushing rod 421.

[0033] With this design, when it is necessary to increase the windward surface of each air guide plate 21, the telescopic end of the push rod 421 extends toward the direction close to the air guide strip 3, thereby driving the end of each air guide plate 21 close to the air guide strip 3 to rotate toward the inner wall of the outer tube 1 through each connecting rod 423, and the end of each air guide plate 21 away from the corresponding connecting rod 423 rotates toward the inner wall of the outer tube 1, thereby increasing the contact area between each air guide plate 21 and the hot air; when it is necessary to reduce the windward surface of each air guide plate 21, the telescopic end of the push rod 421 contracts toward the direction close to the air guide strip 3, and the push rod 421 drives the end of each air guide plate 21 close to the air guide strip 3 to rotate away from the inner wall of the outer tube 1 through each connecting rod 423, and the end of each air guide plate 21 away from the corresponding connecting rod 423 rotates toward the inner wall of the outer tube 1, thereby reducing the contact area between each air guide plate 21 and the hot air.

[0034] Preferably, the push rod 421 can be an electromagnetic push rod or an electric push rod in the prior art.

[0035] It should be noted that the support plate 424 can be chamfered or hollowed out to reduce wind resistance while supporting the push rod 421 .

[0036] In one embodiment, a cleaning component 5 is provided on the push rod 421, and the cleaning component 5 includes a cleaning ring 51 arranged on the fixed end of the push rod 421 near one end of the air guide strip 3, and the cleaning ring 51 is close to the surface of the telescopic end of the push rod 421. When the telescopic end of the push rod 421 is contracted, the cleaning ring 51 is used to scrape off the coal powder attached to the telescopic end of the push rod 421. A plurality of cleaning plates 52 are distributed on the connecting ring 422, and each cleaning plate 52 is arc-shaped and circumferentially distributed on one side of the connecting ring 422 near the fixed end of the push rod 421. Each cleaning plate 52 is rotatably connected to the connecting ring 422, and a torsion spring (not shown in the figure) is provided at the rotating connection between each cleaning plate 52 and the connecting ring 422. The torsion spring is used to provide a torsion force to the corresponding cleaning plate 52 in the direction close to the axis center of the transverse section of the outer cylinder 1, and the cleaning plate 52 is used to remove the coal powder attached to the cleaning ring 51.

[0037] With this design, after the push rod 421 is used for a long time, coal powder will be attached to the push rod 421. When the push rod 421 completes its work and retracts, the telescopic end of the push rod 421 moves toward the direction close to the cleaning ring 51. During the movement, the cleaning ring 51 scrapes off the coal powder attached to the surface of the telescopic end of the push rod 421, thereby reducing the situation in which the coal powder enters the push rod 421 when the push rod 421 retracts and affects the use of the push rod 421. When the push rod 421 retracts, the connecting ring 422 drives each cleaning plate 52 to approach the cleaning ring 51 until each cleaning plate 52 contacts the cleaning ring 51. The torsion spring on each cleaning plate 52 provides a torsion force for the corresponding cleaning plate 52 in the direction close to the axis center of the transverse section of the outer cylinder 1, so that the scraping surface of each cleaning plate 52 is close to the surface of the cleaning ring 51. As the push rod 421 continues to retract, the cleaning plate 52 cleans the coal powder attached to the cleaning ring 51.

[0038] In one embodiment, a wind shield 6 is provided on the fixed end of the push rod 421 away from the connecting ring 422 along the length direction of the transverse section of the outer cylinder 1. The wind shield 6 is conical and is used to reduce the erosion of the push rod 421 by coal powder.

[0039] With this design, when conveying coal powder, the wind shield 6 can effectively reduce the erosion of the coal powder on the push rod 421, and the conical design of the wind shield 6 can help guide the hot air at the center of the outer tube 1 toward the inner wall of the outer tube 1.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, "multiple", "multiple groups", and "several" refer to more than two.

Claims

1. A boiler burner, characterized in that: include: The outer cylinder (1) comprises an L-shaped cylinder body composed of a vertical section and a transverse section, wherein the vertical section of the outer cylinder (1) is an air inlet for receiving and transporting hot air carrying coal powder, and the transverse section of the outer cylinder (1) is an air outlet; The separation component (2) comprises a plurality of air guide plates (21) arranged in the transverse section of the outer cylinder (1), each of the air guide plates (21) being arc-shaped and distributed in the outer cylinder (1) in a cone shape with the axis of the transverse section of the outer cylinder (1) as the center, and the tip of the cone faces the vertical section; A plurality of air guide strips (3), each of the air guide strips (3) being spirally distributed on the inner wall of the transverse section of the outer cylinder (1), each of the air guide strips (3) being arranged between the air guide plate (21) and the air outlet of the outer cylinder (1), and each of the air guide strips (3) being used to guide the hot air in the outer cylinder (1) to be spirally output.

2. A boiler burner according to claim 1, characterized in that: The outer cylinder (1) is provided with a control component (4), the control component (4) comprising a positioning ring (41) arranged in the transverse section of the outer cylinder (1), the positioning ring (41) being coaxially arranged with the transverse section of the outer cylinder (1), and the middle part of each wind guide plate (21) being rotatably connected to the positioning ring (41), and a gap for the wind guide plate (21) to rotate is reserved between each wind guide plate (21) and another adjacent wind guide plate (21), and further comprising a pushing member (42) arranged in the outer cylinder (1), the pushing member (42) being used for driving each wind guide plate (21) to rotate synchronously with the corresponding rotation connection between the positioning ring (41) and the positioning ring (41) as the rotation center.

3. A boiler burner according to claim 2, characterized in that: The pushing member (42) comprises a pushing rod (421) which is arranged in the transverse section of the outer cylinder (1) and is telescopically arranged along the length direction of the transverse section of the outer cylinder (1); each of the air guide plates (21) is arranged around the pushing rod (421); a connecting ring (422) is provided on the telescopic end of the pushing rod (421); a plurality of connecting rods (423) are distributed on the connecting ring (422); each of the connecting rods (423) corresponds to each of the air guide plates (21) one by one, and one end of each of the connecting rods (423) is rotatably connected to the connecting ring (422), and the other end is connected to the corresponding air guide plate (21). 1) is rotatably connected to one end of the air guide strip (3). When the telescopic end of the push rod (421) moves, the push rod (421) drives each of the air guide plates (21) to rotate synchronously with the corresponding rotation connection between the push rod and the positioning ring (41) as the rotation center. A support plate (424) is provided below the push rod (421). The support plate (424) is arranged between the corresponding two air guide plates (21) and one end of the support plate (424) is connected to the push rod (421), and the other end is connected to the inner wall of the outer cylinder (1). The support plate (424) is used to support and position the push rod (421).

4. A boiler burner according to claim 3, characterized in that: The push rod (421) is provided with a cleaning component (5), and the cleaning component (5) comprises a cleaning ring (51) arranged on one end of the fixed end of the push rod (421) close to the wind guide strip (3), and the cleaning ring (51) is in close contact with the surface of the telescopic end of the push rod (421). When the telescopic end of the push rod (421) is contracted, the cleaning ring (51) is used to scrape off the coal powder attached to the telescopic end of the push rod (421). A plurality of cleaning plates (52) are distributed on the connecting ring (422), each of which is The cleaning plates (52) are arc-shaped and are circumferentially distributed on one side of the connecting ring (422) close to the fixed end of the push rod (421). Each cleaning plate (52) is rotatably connected to the connecting ring (422), and a torsion spring is provided at the rotatable connection between each cleaning plate (52) and the connecting ring (422). The torsion spring is used to provide a torsion force to the corresponding cleaning plate (52) in the direction close to the axis center of the transverse section of the outer cylinder (1). The cleaning plates (52) are used to remove coal powder attached to the cleaning ring (51).

5. A boiler burner according to claim 3, characterized in that: A wind shield (6) is provided on one end of the fixed end of the push rod (421) away from the connecting ring (422) and arranged along the length direction of the transverse section of the outer cylinder (1). The wind shield (6) is conical and is used to reduce the scouring of the push rod (421) by coal powder.

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