An ultra-low load oxygen-enriched pulverized coal reflux premixed burner

Abstract

The present invention discloses an ultra-low load oxygen-enriched coal powder reflux premixed burner in the field of coal-fired burners, comprising a base plate, a secondary air duct fixedly connected to the middle of the left upper end surface of the base plate through a support column, a primary air duct connected to the upper left end of the secondary air duct, an oil gun connected to the upper left end of the primary air duct, a first oxygen tube is provided on the outer sleeve of the oil gun, a water tank is fixedly connected to the rear end of the right upper end surface of the base plate, a water pump is connected to the middle of the upper end surface of the water tank, an air inlet pipe is fixedly connected to the middle of the lower end of the fixed ring, a filter screen is slidably connected to the upper side of the inner cavity wall of the filter box, a reciprocating plate is slidably connected to the upper side of the front end surface of the filter box through a slide groove and a second slider, and a cleaning brush is installed on the upper end surface of the reciprocating plate through bolts. The present invention realizes that the air intake rate can be adjusted to control the degree of combustion, and impurities in the air can be filtered and the filter screen can be cleaned, thereby ensuring the combustion effect. At the same time, the present invention can also quickly cool the combustion chamber, reducing the time interval for secondary use.

Description

Technical Field

[0001] The invention relates to the field of coal-fired burners, in particular to an ultra-low-load oxygen-enriched coal powder reflux premixed burner. Background Art

[0002] A burner is a general term for a device that sprays fuel and air in a certain way to mix or spray and burn. The patent document with publication number CN105841147A discloses an oxygen-enriched coal powder reflux premixing burner, the burner body includes an oil gun, the oil gun is covered with a primary air duct, the primary air duct is covered with a secondary air duct; it also includes a reflux cap and an ignition gun, the reflux cap covers the air outlet of the primary air duct and leaves a gap with the primary air duct to form a reflux channel, the reflux cap has a through hole in the center, the oil gun passes through the primary air duct and is inserted into the through hole, a gap is left between the oil gun and the through hole to form an air-powder channel, the oil gun, the primary air duct, the secondary air duct and the reflux cap are on the same axis. The ignition gun is fixed on the outer wall of the burner body and inserted into the secondary air duct, and the ignition gun nozzle is close to the oil gun nozzle. The secondary air duct is divided into a conveying area and a combustion area, the oil gun, the primary air duct and the reflux cap are all located in the conveying area, and the ignition gun nozzle is located in the combustion area. The beneficial effects are that the coal types are widely adaptable, ignition energy is saved or not required, combustion is controllable, and the coal powder burnout rate is high.

[0003] However, it still has the following shortcomings in practical application:

[0004] First, it is inconvenient to control the degree of combustion, because the opening size of the air inlet of the secondary air duct of the above-mentioned prior art is fixed and the size of the opening cannot be controlled, so it is inconvenient to control the air intake rate, resulting in inconvenience in adjusting the degree of combustion as needed.

[0005] Second, impurities may appear in the combustion chamber and affect the combustion effect. Since the above-mentioned prior art does not filter the air entering the secondary air duct, some impurities may enter the combustion chamber with the air and affect the combustion effect.

[0006] Third, the secondary combustion interval is relatively long, because the above-mentioned prior art is not convenient for quickly cooling the combustion chamber, resulting in a longer cooling cycle of the combustion chamber, which affects the secondary use.

[0007] Based on this, the present invention designs an ultra-low load oxygen-enriched coal powder reflux premix burner to solve the above problems. Summary of the invention

[0008] To solve the above problems, the present invention provides the following technical solutions:

[0009] An ultra-low load oxygen-enriched pulverized coal reflux premixed burner comprises a bottom plate, a secondary air duct is fixedly connected to the middle of the left side of the upper end surface of the bottom plate through a support column, the upper end of the left side of the secondary air duct is connected to the primary air duct, the upper side of the left end of the primary air duct is connected to an oil gun, the outer sleeve of the oil gun is provided with a first oxygen tube, the outer sleeve of the first oxygen tube is provided with a second oxygen tube, the rear end of the right side of the upper end surface of the bottom plate is fixedly connected to a water tank, the middle of the upper end surface of the water tank is connected to a water pump, the water outlet end of the water pump is connected to a water pipe, the upper end of the water pipe is connected to There is a water accumulation pan, the left end of the secondary air cylinder is connected to a filter box, the lower end of the filter box is connected to a fan through a first connecting pipe, the fan air inlet pipe is connected to a second connecting pipe, the lower end is fixedly connected with a groove rod, the lower end face of the groove rod is fixedly connected with a fixing ring, the middle part of the lower end of the fixing ring is fixedly connected with an air inlet pipe, a filter screen is slidably connected to the upper side of the inner cavity wall of the filter box, the upper side of the front end face of the filter box is slidably connected to a reciprocating plate through a slide groove and a second slider, and a cleaning brush is installed on the upper end face of the reciprocating plate through bolts.

[0010] As a further solution of the present invention, the left front end of the fixing ring is rotatably connected to a second worm, the second worm is meshingly connected to a through-hole disk, the through-hole disk is rotatably connected to the fixing ring, and the lower end of the through-hole disk is rotatably connected to the air inlet pipe.

[0011] As a further solution of the present invention, the second worm is meshingly connected to the through-hole disk, the upper end of the through-hole disk is slidably connected to an opening and closing piece through a sliding groove, a second sliding column is fixedly connected to the middle of the upper end surface of the opening and closing piece, and the second sliding column is slidably connected to the groove rod.

[0012] As a further solution of the present invention, a sliding rod is slidably connected to the middle part of the front end of the filter box, and a plug-in block is rotatably connected to the middle part of the lower end surface of the sliding rod through a pin shaft, and a plug-in rod is fixedly connected to the middle part of the front side of the lower end surface of the filter box, and a spring is sleeved on the upper end of the sliding rod, and a fastening block is fixedly connected to the upper end of the spring.

[0013] As a further solution of the present invention, the lower end of the spring is fixedly connected to the filter box, the left side of the front end surface of the filter box is fixedly connected to the second motor, the output end of the second motor is fixedly connected to a threaded rod, the rear end of the threaded rod is fixedly connected to a sprocket, the right side of the front end surface of the filter box is rotatably connected to the sprocket via a pin shaft, the sprocket is meshed with a chain, and the sprocket on the right side is fixedly connected to a second rotating block via a pin shaft, the upper side of the front end surface of the second rotating block is slidably connected to a guide plate via a third sliding column, the upper end surface of the guide plate is fixedly connected to the reciprocating plate, and the left side of the front end surface of the filter net is threadedly connected to the threaded rod.

[0014] As a further solution of the present invention, a first motor is fixedly connected to the middle part of the front side of the upper end face of the base plate, the output end of the first motor is fixedly connected to the first rectangular block through a first rotating shaft, the right side of the upper end face of the first rectangular block is slidably connected to a slide rack through a first sliding column, the right side of the lower end face of the slide rack is slidably connected to the base plate through a first sliding block, and a combustion chamber is provided at the right end of the secondary air cylinder.

[0015] As a further solution of the present invention, the slide rack is meshedly connected to the first worm through a first gear, the first worm is meshedly connected to the water collection tray, the middle part of the upper end surface of the base plate is fixedly connected to a ring gear through an L-shaped rod, the ring gear is rotatably connected to the water collection tray, the water collection tray is evenly connected to a nozzle, the right end of the water collection tray is rotatably connected to the second gear and the first bevel gear through a pin shaft, the first bevel gear is meshedly connected to the fan blade through the second bevel gear, the outside of the combustion chamber is fixedly connected to a heat conducting plate, and the second gear is meshedly connected to the ring gear.

[0016] As a further solution of the present invention, an ignition gun is provided at the upper right end of the secondary air cylinder, and a reflux cap is fixedly connected to the right end of the inner cavity of the secondary air cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the through-hole disk is driven to rotate by manually rotating the second worm, and the through-hole disk drives the opening and closing piece to move. At the same time, under the limiting action of the second slide column, the opening and closing piece follows the same motion trajectory, and the size of the through hole in the center of the through-hole disk is adjusted. Because the second connecting pipe, the through-hole disk, and the air inlet pipe are connected, it is easier to adjust the air intake rate, and then control the degree of combustion to meet different usage requirements. When the gas passes through the filter box, the filter screen filters impurities and dust in the gas, so that the impurities and dust adhere to the surface of the filter screen. When the filter screen needs to be cleaned, pull the slide rod downward to compress the spring, move the fastening block away from the filter screen, and then insert the plug-in block into the groove of the plug-in rod to complete the fixation. Then start the second motor, the second motor drives the threaded rod to rotate, and the threaded rod drives the filter to start moving forward. At the same time, the threaded rod drives the right sprocket to rotate through the left sprocket, so that the second rotating block drives the guide plate to move back and forth left and right through the third sliding column, and the reciprocating plate drives the cleaning brush to move back and forth left and right to clean the dust and impurities attached to the surface of the filter until the filter moves to the front end, and all positions on the lower end surface of the filter can be cleaned. Then control the second motor to rotate in the opposite direction to return the filter to its initial position, and then remove the plug-in block from the plug-in rod so that the fastening block is pressed against the filter again to complete the fixation. Then remove the cleaning brush through the bolts for cleaning or replacement, which makes it easier to filter and automatically clean the dust and impurities in the gas before entering the secondary air duct, thereby ensuring the quality of the gas and avoiding the occurrence of impurities during the combustion process that affect the combustion effect. After combustion, a large amount of high temperature will be generated inside the combustion chamber, and the water pump and the first motor will be started. The water pump will pump out the water in the water tank and transport it to the inside of the water accumulation tray through the water pipe, and then spray it out through the nozzle. At the same time, the first motor drives the first rectangular block to rotate through the first rotating shaft, and the first rectangular block drives the slide rack to move back and forth through the first sliding column, so that the first worm gear rotates back and forth, which can drive the water accumulation tray to rotate regularly around the gear ring, so that the nozzle rotates. At the same time, the gear ring drives the second gear to rotate, so that the first bevel gear drives the second bevel gear to rotate, so that the fan blades rotate. The wind generated by the fan blades can not only cool the combustion chamber, but also disperse the water sprayed from the nozzle. The simultaneous movement of the nozzle and the fan blades also makes the air cooling and water cooling range wider, which is more convenient for an efficient cooling effect on the combustion chamber, thereby reducing the time interval of the secondary combustion, and the secondary combustion work can be carried out quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0021] Figure 3 It is a partial three-dimensional structural schematic diagram of the right end section of the filter box of the present invention;

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0023] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle C area;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the right half section of the secondary air duct of the present invention when viewed from above;

[0025] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of the middle D area;

[0026] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure of the middle E area;

[0027] Fig. 9 It is a schematic diagram of the partial three-dimensional structure of the water collection tray of the present invention;

[0028] Fig.10 It is a partial three-dimensional schematic diagram of a half-section of the second connecting pipe of the present invention;

[0029] Fig.11 It is a schematic half-section diagram of the through-hole plate of the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Bottom plate; 2. Support column; 3. Secondary air duct; 4. Fan; 5. Primary air duct; 6. Oil gun; 7. First oxygen tube; 8. Second oxygen tube; 9. Ignition gun; 10. L-shaped rod; 11. Water tank; 12. Water pump; 13. Water pipe; 14. First motor; 15. First rotating shaft; 16. First rectangular block; 17. First sliding column; 18. Sliding rack; 19. First slider; 20. First worm; 21. First gear; 22. Water tray; 23. Gear ring; 24. Nozzle; 25. Combustion chamber; 26. Heat conducting plate; 27. Second gear; 28. First bevel gear; 29. ​​Second bevel gear ; 30. Fan blade; 31. Air inlet pipe; 32. Fixed ring; 33. Grooved rod; 34. Second slide column; 35. Opening and closing piece; 36. Through-hole plate; 37. Second worm; 38. Backflow cap; 39. Filter box; 40. Filter screen; 41. Fastening block; 42. Slide rod; 43. Spring; 44. Reciprocating plate; 45. Third slide column; 46. Second slider; 47. Second rotating block; 48. Sprocket; 49. Chain; 50. Threaded rod; 51. Plug-in block; 52. Plug-in rod; 53. Second motor; 54. First connecting pipe; 55. Second connecting pipe; 56. Cleaning brush; 57. Guide plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] See also Figure 1-11 , the present invention provides a technical solution:

[0034] An ultra-low load oxygen-enriched pulverized coal reflux premixed burner comprises a bottom plate 1, a secondary air duct 3 is fixedly connected to the middle of the left side of the upper end surface of the bottom plate 1 through a support column 2, the upper left end of the secondary air duct 3 is connected to the primary air duct 5, the upper left end of the primary air duct 5 is connected to an oil gun 6, the outer sleeve of the oil gun 6 is provided with a first oxygen tube 7, the outer sleeve of the first oxygen tube 7 is provided with a second oxygen tube 8, the rear end of the right side of the upper end surface of the bottom plate 1 is fixedly connected to a water tank 11, the middle of the upper end surface of the water tank 11 is connected to a water pump 12, the water outlet end of the water pump 12 is connected to a water pipe 13, and the upper end of the water pipe 13 is connected to a water accumulation tray 22 The left end of the secondary air duct 3 is connected to a filter box 39, the lower end of the filter box 39 is connected to the fan 4 through a first connecting pipe 54, the air inlet pipe of the fan 4 is connected to a second connecting pipe 55, the lower end is fixedly connected to a groove rod 33, the lower end surface of the groove rod 33 is fixedly connected to a fixing ring 32, the middle part of the lower end of the fixing ring 32 is fixedly connected to the air inlet pipe 31, the filter screen 40 is slidably connected to the upper side of the inner cavity wall of the filter box 39, the upper side of the front end surface of the filter box 39 is slidably connected to a reciprocating plate 44 through a slide groove and a second slider 46, and a cleaning brush 56 is installed on the upper end surface of the reciprocating plate 44 through bolts.

[0035] As a further embodiment of the present invention, the front end of the left side of the fixing ring 32 is rotatably connected with a second worm 37, the second worm 37 is meshedly connected with a through-hole plate 36, the through-hole plate 36 is rotatably connected with the fixing ring 32, and the lower end of the through-hole plate 36 is rotatably connected with the air inlet pipe 31. The second worm 37 is meshedly connected with the through-hole plate 36, the upper end of the through-hole plate 36 is slidably connected with an opening and closing piece 35 through a sliding groove, the middle part of the upper end surface of the opening and closing piece 35 is fixedly connected with a second sliding column 34, and the second sliding column 34 is slidably connected with a groove rod 33. The through-hole disk 36 is driven to rotate by manually rotating the second worm 37, and the through-hole disk 36 drives the opening and closing piece 35 to move. At the same time, under the limiting action of the second sliding column 34, the opening and closing piece 35 follows the same movement trajectory, and the size of the through hole in the center of the through-hole disk 36 is adjusted. Because the second connecting pipe 55, the through-hole disk 36, and the air inlet pipe 31 are connected, it is easier to adjust the intake rate and then control the combustion degree to meet different usage requirements.

[0036] The front middle of the filter box 39 is slidably connected with a slide bar 42, the middle of the lower end face of the slide bar 42 is rotatably connected with a plug-in block 51 through a pin shaft, the middle of the front side of the lower end face of the filter box 39 is fixedly connected with a plug-in bar 52, the upper end of the slide bar 42 is sleeved with a spring 43, and the upper end of the spring 43 is fixedly connected with a fastening block 41. The lower end of the spring 43 is fixedly connected with the filter box 39, the left side of the front end face of the filter box 39 is fixedly connected with a second motor 53, the output end of the second motor 53 is fixedly connected with a threaded rod 50, the rear end of the threaded rod 50 is fixedly connected with a sprocket 48, the right side of the front end face of the filter box 39 is rotatably connected with a sprocket 48 through a pin shaft, the sprocket 48 is meshed with a chain 49, the right side sprocket 48 is fixedly connected with a second rotating block 47 through a pin shaft, the upper side of the front end face of the second rotating block 47 is slidably connected with a guide plate 57 through a third slide column 45, the upper end face of the guide plate 57 is fixedly connected with a reciprocating plate 44, and the left side of the front end face of the filter net 40 is threadedly connected with a threaded rod 50. When the gas passes through the filter box 39, the filter 40 filters the impurities and dust in the gas, so that the impurities and dust adhere to the surface of the filter 40. When the filter 40 needs to be cleaned, the slide bar 42 is pulled downward to compress the spring 43, and the fastening block 41 is away from the filter 40. Then the plug-in block 51 is inserted into the groove of the plug-in rod 52 to complete the fixation. Then the second motor 53 is started, and the second motor 53 drives the threaded rod 50 to rotate. The threaded rod 50 drives the filter 40 to start moving forward. At the same time, the threaded rod 50 drives the right sprocket 48 to rotate through the left sprocket 48, so that the second rotating block 47 drives the guide plate 57 to move back and forth left and right through the third slide column 45, and the reciprocating plate 44 drives the cleaning brush 56 to move back and forth left and right, so as to remove the dust and The impurities are cleaned until the filter 40 moves to the front end, and all positions on the lower end surface of the filter 40 can be cleaned, and then the second motor 53 is controlled to rotate in the opposite direction to return the filter 40 to the initial position, and then the plug-in block 51 is removed from the plug-in rod 52, so that the fastening block 41 is pressed against the filter 40 again to complete the fixation, and then the cleaning brush 56 is removed by bolts for cleaning or replacement, so as to facilitate the filtering and automatic cleaning of dust and impurities in the gas before entering the secondary air duct 3, thereby ensuring the quality of the gas and avoiding the situation where impurities appear during the combustion process and affect the combustion effect.

[0037] As a further implementation scheme of the present invention: a first motor 14 is fixedly connected to the middle part of the front side of the upper end face of the base plate 1, and the output end of the first motor 14 is fixedly connected to the first rectangular block 16 through the first rotating shaft 15. The right side of the upper end face of the first rectangular block 16 is slidably connected to the slide rack 18 through the first sliding column 17, and the right side of the lower end face of the slide rack 18 is slidably connected to the base plate 1 through the first sliding block 19, and a combustion chamber 25 is provided at the right end of the secondary air cylinder 3. The slide rack 18 is meshedly connected to the first worm 20 through the first gear 21, and the first worm 20 is meshedly connected to the water accumulation tray 22. The middle part of the upper end surface of the bottom plate 1 is fixedly connected to the ring gear 23 through the L-shaped rod 10, and the ring gear 23 is rotatably connected to the water accumulation tray 22. The water accumulation tray 22 is evenly connected to the nozzle 24. The right end of the water accumulation tray 22 is rotatably connected to the second gear 27 and the first bevel gear 28 through the pin shaft, and the first bevel gear 28 is meshedly connected to the fan blade 30 through the second bevel gear 29. The outside of the combustion chamber 25 is fixedly connected to the heat conducting plate 26, and the second gear 27 is meshedly connected to the ring gear 23. An ignition gun 9 is provided at the upper end of the right side of the secondary air cylinder 3, and a reflux cap 38 is fixedly connected to the right end of the inner cavity of the secondary air cylinder 3. After combustion, a large amount of high temperature is generated inside the combustion chamber 25, and the water pump 12 and the first motor 14 are started. The water pump 12 pumps the water in the water tank 11 and transports it to the inside of the water accumulation tray 22 through the water pipe 13, and then sprays it out through the nozzle 24. At the same time, the first motor 14 drives the first rectangular block 16 to rotate through the first rotating shaft 15, and the first rectangular block 16 drives the sliding groove rack 18 to move back and forth through the first sliding column 17, so that the first worm 20 reciprocates, which can drive the water accumulation tray 22 to rotate regularly around the gear ring 23, so that the nozzle 24 can be sprayed out. The head 24 rotates, and at the same time, the ring gear 23 drives the second gear 27 to rotate, so that the first bevel gear 28 drives the second bevel gear 29 to rotate, and the fan blades 30 rotate. The wind generated by the fan blades 30 can not only cool the combustion chamber 25, but also disperse the water sprayed from the nozzle 24. The simultaneous movement of the nozzle 24 and the fan blades 30 also makes the air cooling and water cooling range wider, so that it is easier to achieve an efficient cooling effect on the combustion chamber 25, thereby reducing the time interval of the secondary combustion, and the secondary combustion work can be carried out quickly.

[0038] The working principle of the present invention is: when using the present invention, the through-hole disk 36 is driven to rotate by manually rotating the second worm 37, and the through-hole disk 36 drives the opening and closing piece 35 to move. At the same time, under the limiting action of the second sliding column 34, the opening and closing piece 35 follows the same movement trajectory, and the size of the through hole in the center of the through-hole disk 36 is adjusted. Because the second connecting pipe 55, the through-hole disk 36, and the air inlet pipe 31 are connected, it is easier to adjust the intake rate, and then control the combustion degree to meet different usage requirements. Then, coal powder is delivered to the primary air duct 5, and air is delivered to the secondary air duct 3. When the gas passes through the filter box 39, the filter 40 filters impurities and dust in the gas, so that the impurities and dust adhere to the surface of the filter 40. When the filter 40 needs to be cleaned, the slide bar 42 is pulled downward to compress the spring 43, and the fastening block 41 is away from the filter 40. Then, the plug-in block 51 is inserted into the groove of the plug-in rod 52 to complete the fixation of the slide bar 42, so that 41 stays at a position away from 40, and then the second motor 53 is started. The second motor 53 drives the threaded rod 50 to rotate, and the threaded rod 50 drives the filter 40 to start moving forward.At the same time, the threaded rod 50 drives the right sprocket 48 to rotate through the left sprocket 48, so that the second rotating block 47 drives the guide plate 57 to move back and forth left and right through the third sliding column 45, and the reciprocating plate 44 drives the cleaning brush 56 to move back and forth left and right to clean the dust and impurities attached to the surface of the filter 40 until the filter 40 moves to the front end, and then all positions of the lower end surface of the filter 40 can be cleaned, and then the second motor 53 is controlled to rotate in the opposite direction to return the filter 40 to the initial position, and then the plug-in block 51 is removed from the plug-in rod 52, so that the fastening block 41 is pressed against the filter 40 again. , complete the fixation, and then remove the cleaning brush 56 by bolts for cleaning or replacement, so as to facilitate the filtering and automatic cleaning of dust and impurities in the gas before entering the secondary air duct 3, thereby ensuring the quality of the gas and avoiding the situation where impurities appear during the combustion process and affect the combustion effect; then, after the wind and coal powder enters the primary air duct 5, a part of the wind and coal powder directly reaches the combustion chamber 25, and the other part of the wind and coal powder is blocked by the reflux cap 38 and reaches the secondary air duct 3. Under the action of the gas inside the secondary air duct 3, the wind and coal powder is slowly transported to the combustion chamber 25, and the oil gun 6 and the ignition gun 9 is used in conjunction with the combustion chamber 25 to burn, thereby meeting the slow combustion requirements after subsequent ignition, thereby obtaining a more efficient burnout rate. A large amount of high temperature is generated inside the combustion chamber 25 after combustion, and the water pump 12 and the first motor 14 are started. The water pump 12 pumps water out of the water tank 11 and transports it to the inside of the water accumulation tray 22 through the water pipe 13, and then sprays it out through the nozzle 24. At the same time, the first motor 14 drives the first rectangular block 16 to rotate through the first rotating shaft 15, and the first rectangular block 16 drives the sliding groove rack 18 to move back and forth through the first sliding column 17, so that the first worm 20 rotates back and forth, which can bring The dynamic water accumulation plate 22 rotates regularly forward and reverse around the ring gear 23, causing the nozzle 24 to rotate. At the same time, the ring gear 23 drives the second gear 27 to rotate, causing the first bevel gear 28 to drive the second bevel gear 29 to rotate, and causing the fan blades 30 to rotate. The wind generated by the fan blades 30 can not only cool the combustion chamber 25, but also disperse the water sprayed from the nozzle 24. The simultaneous movement of the nozzle 24 and the fan blades 30 also makes the air cooling and water cooling range wider, thereby making it easier to achieve an efficient cooling effect on the combustion chamber 25, thereby reducing the time interval of the secondary combustion, and the secondary combustion work can be carried out quickly.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultra-low load oxygen-enriched pulverized coal reflux premix burner, comprising a bottom plate (1), characterized in that: A secondary air cylinder (3) is fixedly connected to the middle of the left side of the upper end surface of the bottom plate (1) through a support column (2); the upper left end of the secondary air cylinder (3) is connected to a primary air cylinder (5); the upper left end of the primary air cylinder (5) is connected to an oil gun (6); the oil gun (6) is provided with a first oxygen tube (7) on the outside; the first oxygen tube (7) is provided with a second oxygen tube (8) on the outside; a water tank (11) is fixedly connected to the rear end of the right side of the upper end surface of the bottom plate (1); the middle of the upper end surface of the water tank (11) is connected to a water pump (12); the water outlet end of the water pump (12) is connected to a water pipe (13); the upper end of the water pipe (13) is connected to a water accumulation tray (22); the left end of the secondary air cylinder (3) is connected to a first oxygen tube (7); the first oxygen tube (7) is provided with a second oxygen tube (8); A filter box (39) is connected, the lower end of the filter box (39) is connected to a fan (4) through a first connecting pipe (54), the air inlet pipe of the fan (4) is connected to a second connecting pipe (55), the lower end is fixedly connected to a groove rod (33), the lower end surface of the groove rod (33) is fixedly connected to a fixing ring (32), the middle part of the lower end of the fixing ring (32) is fixedly connected to an air inlet pipe (31), the upper side of the inner cavity wall of the filter box (39) is slidably connected to a filter screen (40), the upper side of the front end surface of the filter box (39) is slidably connected to a reciprocating plate (44) through a sliding groove and a second sliding block (46), and the upper end surface of the reciprocating plate (44) is installed with a cleaning brush (56) through bolts; A first motor (14) is fixedly connected to the middle of the front side of the upper end face of the base plate (1); an output end of the first motor (14) is fixedly connected to a first rectangular block (16) via a first rotating shaft (15); a right side of the upper end face of the first rectangular block (16) is slidably connected to a sliding groove rack (18) via a first sliding column (17); a right side of the lower end face of the sliding groove rack (18) is slidably connected to the base plate (1) via a first sliding block (19); and a combustion chamber (25) is provided at the right end of the secondary air cylinder (3); The slide rack (18) is meshedly connected to the first worm (20) through the first gear (21), and the first worm (20) is meshedly connected to the water accumulation tray (22). The middle part of the upper end surface of the bottom plate (1) is fixedly connected to a gear ring (23) through an L-shaped rod (10), and the gear ring (23) is rotatably connected to the water accumulation tray (22). The water accumulation tray (22) is evenly connected to the nozzle (24). The right end of the water accumulation tray (22) is rotatably connected to the second gear (27) and the first bevel gear (28) through a pin shaft. The first bevel gear (28) is meshedly connected to the fan blade (30) through the second bevel gear (29). The combustion chamber (25) is fixedly connected to the outside with a heat conducting plate (26), and the second gear (27) is meshedly connected to the gear ring (23); An ignition gun (9) is provided at the upper right end of the secondary air cylinder (3), and a reflux cap (38) is fixedly connected to the right end of the inner cavity of the secondary air cylinder (3).

2. The ultra-low load oxygen-enriched pulverized coal reflux premix burner according to claim 1, characterized in that: The front end of the left side of the fixing ring (32) is rotatably connected to a second worm (37), the second worm (37) is meshingly connected to a through-hole disk (36), the through-hole disk (36) is rotatably connected to the fixing ring (32), and the lower end of the through-hole disk (36) is rotatably connected to the air inlet pipe (31).

3. The ultra-low load oxygen-enriched pulverized coal reflux premix burner according to claim 2, characterized in that: The second worm gear (37) is meshingly connected with the through hole disk (36), the upper end of the through hole disk (36) is slidably connected with an opening and closing piece (35) through a sliding groove, the middle part of the upper end surface of the opening and closing piece (35) is fixedly connected with a second sliding column (34), and the second sliding column (34) is slidably connected with the groove rod (33).

4. The ultra-low load oxygen-enriched pulverized coal reflux premix burner according to claim 1, characterized in that: A slide rod (42) is slidably connected to the middle of the front end of the filter box (39); a plug-in block (51) is rotatably connected to the middle of the lower end surface of the slide rod (42) via a pin shaft; a plug-in rod (52) is fixedly connected to the middle of the front side of the lower end surface of the filter box (39); a spring (43) is sleeved on the upper end of the slide rod (42); and a fastening block (41) is fixedly connected to the upper end of the spring (43).

5. The ultra-low load oxygen-enriched pulverized coal reflux premix burner according to claim 4, characterized in that: The lower end of the spring (43) is fixedly connected to the filter box (39), the left side of the front end face of the filter box (39) is fixedly connected to a second motor (53), the output end of the second motor (53) is fixedly connected to a threaded rod (50), the rear end of the threaded rod (50) is fixedly connected to a sprocket (48), the right side of the front end face of the filter box (39) is rotatably connected to the sprocket (48) through a pin shaft, the sprocket (48) is meshingly connected to a chain (49), the right side of the sprocket (48) is fixedly connected to a second rotating block (47) through a pin shaft, the upper side of the front end face of the second rotating block (47) is slidably connected to a guide plate (57) through a third sliding column (45), the upper end face of the guide plate (57) is fixedly connected to the reciprocating plate (44), and the left side of the front end face of the filter screen (40) is threadedly connected to the threaded rod (50).

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