Powder fuel self-adaptive burner

Abstract

The utility model relates to the technical field of combustors, and discloses a powder fuel self-adaptive combustor which sequentially comprises an ignition channel, a central air channel, a rotational flow air channel, a fuel channel, an axial flow air channel and a smoke gathering cover from inside to outside. The rotational flow air channel comprises a mounting ring, a plurality of nozzles, an air inlet hose connected with each nozzle, an adjusting cylinder, an axial adjusting mechanism for adjusting the axial movement of the adjusting cylinder, and a circumferential adjusting mechanism for adjusting the circumferential rotation of the adjusting cylinder, the nozzles are movably connected to the mounting ring, a connecting rod is hinged to each nozzle, and the connecting rod is connected with the air inlet hose. And the connecting rod is hinged with the adjusting cylinder. The utility model has the following advantages and effects: the circumferential rotation of the adjusting cylinder is adjusted through the circumferential adjusting mechanism, the axial movement of the adjusting cylinder is adjusted through the axial adjusting mechanism, the adjusting cylinder drives the posture adjustment of the nozzle through the connecting rod, the adjustment of the rotational flow angle of rotational flow wind is realized, and the adjustment of parameters such as the rotational flow wind is matched; and the flame can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, and particularly relates to a powder fuel adaptive burner. Background Art

[0002] A burner is an important device in industrial production, which enables fuel and air to be ejected and mixed for combustion. Among them, a powder fuel burner is a burner that burns a mixture of powder fuel and air. The Chinese invention application with the publication number CN105864756A discloses a combined multi-nozzle combustible powder burner, including an ignition nozzle, a plurality of auxiliary nozzles, and a furnace body. The plurality of auxiliary nozzles are fixed outside the ignition nozzle and are circumferentially distributed with the ignition nozzle as the center; the lower parts of the ignition nozzle and the auxiliary nozzles are connected to the furnace body. The ignition nozzle includes: a fuel gas channel and a first oxidant channel arranged from the inside to the outside; a movable ignition device is arranged in the fuel gas channel. The auxiliary nozzle includes: a combustible powder channel and a second oxidant channel arranged from the inside to the outside; a swirler is arranged at the lower part of the second oxidant channel. The outer walls of the fuel gas channel, the first oxidant channel, the combustible powder channel, and the second oxidant channel are water-cooled walls.

[0003] In the prior art, the cyclone of the swirler is realized through an air duct. When the particle size and material of the powder change, the operator can only adjust the opening amplitude of the air valve to adjust the amount of swirling air, and then change the combustion state, resulting in very complex adjustment of the flame length and intensity. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a powder fuel adaptive burner, which has the effect of adjusting the swirling angle of the swirling air and facilitating the adjustment of the flame.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a powder fuel adaptive burner, which sequentially includes an ignition channel, a central air duct, a swirling air channel, a fuel channel, an axial air duct, and a smoke collecting hood from the inside to the outside. The swirling air channel includes a mounting ring, a plurality of nozzles, an air inlet hose connecting each nozzle, an adjusting cylinder, an axial adjusting mechanism for adjusting the axial movement of the adjusting cylinder, and a circumferential adjusting mechanism for adjusting the circumferential rotation of the adjusting cylinder. The nozzles are movably connected to the mounting ring, and a connecting rod is hinged to each nozzle, and the connecting rod is hinged to the adjusting cylinder.

[0006] By adopting the above technical solutions, the axial adjusting mechanism adjusts the axial position of the adjusting cylinder, the axial adjusting mechanism adjusts the circumferential rotation of the adjusting cylinder, and the adjustment of the position and attitude of the adjusting cylinder drives the position adjustment of the nozzle through the connecting rod, so as to realize the adjustment of the angle of the swirling air, and then complete the adjustment of the flame.

[0007] A further setting of the present utility model is that: a perforation is provided on the mounting ring, an arc-shaped cavity is formed on the inner wall of the perforation, a spherical part is formed on the nozzle, and the spherical part is embedded in the arc-shaped cavity.

[0008] By adopting the above technical solution, the nozzle can move on the mounting ring.

[0009] A further setting of the present utility model is that: the axial adjustment mechanism includes a first servo motor, a first gear mounted on the output shaft of the first servo motor, a bearing mounted on the adjustment cylinder, and a rack fixed on the outer ring of the bearing, and the rack meshes with the first gear.

[0010] By adopting the above technical solution, the first servo motor drives the first gear to rotate, driving the rack to rotate, realizing the function of driving the adjustment cylinder to move axially.

[0011] A further setting of the present utility model is that: a groove is provided on the outer wall of the adjustment cylinder, the groove is axially provided along the adjustment cylinder, the circumferential adjustment mechanism includes an adjustment ring and a second servo motor for driving the adjustment ring to rotate, and an inlay block is provided on the inner wall of the adjustment ring, and the inlay block is embedded in the groove.

[0012] By adopting the above technical solution, the second servo motor drives the adjustment ring to rotate, and then drives the adjustment cylinder to rotate, realizing the function of adjusting the circumferential rotation of the adjustment cylinder.

[0013] A further setting of the present utility model is that: the groove penetrates through the adjustment cylinder.

[0014] A further setting of the present utility model is that: both ends of the inlay block are fixed on the inner wall of the adjustment ring.

[0015] A further setting of the present utility model is that: a toothed ring is fixed on the outer wall of the adjustment ring, a second gear is fixed on the output shaft of the second servo motor, and the second gear meshes with the toothed ring.

[0016] A further setting of the present utility model is that: it includes a housing, and the first servo motor and the second servo motor are installed and fixed on the housing.

[0017] A further setting of the present utility model is that: it further includes a PLC controller, and the first servo motor and the second servo motor are both connected to the PLC controller.

[0018] A further setting of the present utility model is that: the axial flow air channel includes a plurality of axial air ducts arranged axially.

[0019] The beneficial effects of the present utility model are as follows: The present utility model adjusts the circumferential rotation of the adjusting cylinder through the circumferential adjustment mechanism, adjusts the axial movement of the adjusting cylinder through the axial adjustment mechanism, and the adjusting cylinder drives the adjustment of the nozzle attitude through the connecting rod, so as to realize the adjustment of the swirl angle of the swirl air. Then, combined with the adjustment of parameters such as the size of the swirl air, the flame can be conveniently adjusted. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is a structural schematic diagram of the present utility model.

[0022] Figure 2 is a structural relationship schematic diagram among the adjusting cylinder, the axial adjustment mechanism, and the circumferential adjustment mechanism of the present utility model.

[0023] Figure 3 is a structural relationship schematic diagram among the adjusting cylinder, the adjusting ring, and the insert block of the present utility model.

[0024] In the figure, 1, ignition channel; 2, central air duct; 3, swirl air channel; 31, mounting ring; 32, nozzle; 33, adjusting cylinder; 34, axial adjustment mechanism; 341, first servo motor; 342, first gear; 343, bearing; 345, rack; 35, circumferential adjustment mechanism; 351, second servo motor; 352, second gear; 353, adjusting ring; 354, toothed ring; 355, insert block; 36, groove; 4, fuel channel; 5, axial flow air channel; 6, smoke collecting hood; 7, air inlet hose. Specific Embodiments

[0025] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] A powder fuel adaptive burner, such as Figures 1 to 3As shown in the figure, from the inside to the outside, it successively includes an ignition channel 1, a central air duct 2, a swirling air channel 3, a fuel channel 4, an axial air channel 5, and a smoke collecting hood 6. The axial air channel 5 includes a number of axial air ducts arranged axially. The swirling air channel 3 includes a mounting ring 31, a number of nozzles 32, an air inlet hose 7 connecting each of the nozzles 32, an adjusting cylinder 33, an axial adjusting mechanism 34 for adjusting the axial movement of the adjusting cylinder 33, and a circumferential adjusting mechanism 35 for adjusting the circumferential rotation of the adjusting cylinder 33.

[0027] Perforations are formed on the mounting ring 31, an arc-shaped cavity is formed on the inner wall of the perforation, a spherical part is formed on the nozzle 32, and the spherical part is embedded in the arc-shaped cavity to movably connect the nozzle 32 to the mounting ring 31. A connecting rod is hinged to each of the nozzles 32, and the connecting rod is hinged to the adjusting cylinder 33.

[0028] The axial adjusting mechanism 34 includes a first servo motor 341, a first gear 342 mounted on the output shaft of the first servo motor 341, a bearing 343 mounted on the adjusting cylinder 33, and a rack 345 fixed to the outer ring of the bearing 343. The rack 345 meshes with the first gear 342.

[0029] A groove 36 is formed on the outer wall of the adjusting cylinder 33, and the groove 36 is opened axially along the adjusting cylinder 33. The circumferential adjusting mechanism 35 includes an adjusting ring 353 and a second servo motor 351 for driving the adjusting ring 353 to rotate. An embedding block 355 is provided on the inner wall of the adjusting ring 353, and the embedding block 355 is embedded in the groove 36. The groove 36 penetrates through the adjusting cylinder 33, and both ends of the embedding block 355 are fixed to the inner wall of the adjusting ring 353. The middle part of the embedding block 355 passes through the groove 36. A toothed ring 354 is fixed to the outer wall of the adjusting ring 353, and a second gear 352 is fixed to the output shaft of the second servo motor 351. The second gear 352 meshes with the toothed ring 354.

[0030] The powder fuel adaptive burner includes a housing and a PLC controller. The first servo motor 341 and the second servo motor 351 are both mounted on the housing and are both connected to the PLC controller.

[0031] Working principle: The axial adjusting mechanism 34 adjusts the axial position of the adjusting cylinder 33, and the axial adjusting mechanism 34 adjusts the circumferential rotation of the adjusting cylinder 33. By adjusting the position and attitude of the adjusting cylinder 33, the position of the nozzle 32 is driven by the connecting rod to adjust the angle of the swirling air, and then the adjustment of the flame is completed.

Claims

1. A pulverized fuel adaptive burner, characterized in that: From the inside to the outside, it includes an ignition channel (1), a central air duct (2), a swirl air channel (3), a fuel channel (4), an axial flow air channel (5), and a smoke hood (6). The swirl air channel (3) includes a mounting ring (31), a plurality of nozzles (32), an air inlet hose (7) connected to each of the nozzles (32), an adjustment tube (33), an axial adjustment mechanism (34) for adjusting the axial movement of the adjustment tube (33), and a circumferential adjustment mechanism (35) for adjusting the circumferential rotation of the adjustment tube (33). The nozzles (32) are movably connected to the mounting ring (31), and each of the nozzles (32) is hinged with a connecting rod, which is hinged to the adjustment tube (33).

2. A pulverized fuel adaptive burner according to claim 1, characterized in that: The mounting ring (31) is provided with a through hole, the inner wall of the through hole is formed with an arc-shaped cavity, the nozzle (32) is formed with a spherical portion, and the spherical portion is embedded in the arc-shaped cavity.

3. The pulverized fuel adaptive burner according to claim 1, characterized in that: The axial adjustment mechanism (34) comprises a first servo motor (341), a first gear (342) mounted on the output shaft of the first servo motor (341), a bearing (343) mounted on the adjustment cylinder (33), and a rack (345) fixed on the outer ring of the bearing (343), wherein the rack (345) is meshed with the first gear (342).

4. A pulverized fuel adaptive burner according to claim 3, characterized in that: The outer wall of the adjusting tube (33) is provided with a groove (36), and the groove (36) is provided along the axial direction of the adjusting tube (33). The circumferential adjustment mechanism (35) comprises an adjusting ring (353) and a second servo motor (351) for driving the adjusting ring (353) to rotate. The inner wall of the adjusting ring (353) is provided with an insert (355), and the insert (355) is embedded in the groove (36).

5. The pulverized fuel adaptive burner according to claim 4, characterized in that: The groove (36) penetrates the adjustment tube (33).

6. The pulverized fuel adaptive burner according to claim 4, characterized in that: Both ends of the insert (355) are fixed to the inner wall of the adjustment ring (353).

7. The pulverized fuel adaptive burner according to claim 4, characterized in that: A gear ring (354) is fixed on the outer wall of the adjustment ring (353), a second gear (352) is fixed on the output shaft of the second servo motor (351), and the second gear (352) is meshed with the gear ring (354).

8. The pulverized fuel adaptive burner according to claim 7, characterized in that: It comprises a housing, and the first servo motor (341) and the second servo motor (351) are mounted and fixed on the housing.

9. The pulverized fuel adaptive burner according to claim 7, characterized in that: It also includes a PLC controller, and the first servo motor (341) and the second servo motor (351) are both connected to the PLC controller.

10. The pulverized fuel adaptive burner according to claim 1, characterized in that: The axial flow air channel (5) comprises a plurality of axial air ducts arranged along the axial direction.

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