Over fire air nozzle for boiler

Abstract

The utility model discloses an over fire air nozzle for a boiler. The over fire air nozzle comprises a boiler top cover, an adjusting assembly, a power assembly and a turning cover assembly. A nozzle is formed in the upper end of the boiler top cover; an adjusting assembly is arranged at the upper end of the boiler top cover; the power assembly comprises a pushing device and a horizontal movement driving device; a horizontal movement driving device is fixedly arranged at the upper end of the boiler top cover; the output end of the horizontal movement driving device is connected with the pushing device; the pushing device pushes the adjusting assembly to slide. The nozzle upper cover is provided with a flip cover assembly; the side end, away from the nozzle direction, of the flip assembly is connected with the adjusting assembly. According to the over-fire air nozzle for the boiler, the circulation amount of over-fire air of the nozzle can be adjusted by arranging the adjusting assembly, and fuel can be ensured to be fully combusted in the boiler by accurately controlling the flow amount of the over-fire air, so that the utilization rate and the heat efficiency of the fuel are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler combustion, in particular to a burnout air nozzle for a boiler. Background Art

[0002] The overburnt air nozzle is usually located at the top of the boiler. Its function is to spray a certain amount of overburnt air during the fuel combustion process to ensure the complete combustion of the fuel. This design helps to improve the combustion efficiency of the boiler, reduce the emission of incompletely burned fuel particles, and thus reduce air pollution. At the same time, the overburnt air nozzle can also help adjust the temperature distribution in the boiler, prevent overheating or local cooling, and ensure the stability and safety of boiler operation.

[0003] The existing Chinese patent (Announcement No.: CN103807869B) proposes a burnout air nozzle for a boiler and a boiler, wherein the burnout air nozzle comprises a direct current air nozzle and a swirl air nozzle which are mutually sleeved inside and outside, wherein the swirl air nozzle is an annular nozzle, and swirl blades are arranged at intervals on the annular nozzle;

[0004] Under the conditions of the same burnout air volume and wind speed, the above technical solution effectively increases the range of the burnout air direct current and enhances the rigidity of the burnout air direct current, while enhancing the burnout effect and ensuring the efficiency of boiler combustion.

[0005] The flow rate of the burnout air nozzle in the above-mentioned device cannot be adjusted. If the burnout air volume is too large, the temperature in the furnace will decrease, and the fuel may not be completely burned, resulting in a decrease in combustion efficiency. If the burnout air volume is too small, the temperature in the furnace will be too high, increasing the risk of explosion. Excessive air volume may also cause heat to be carried away by excess air, increasing energy waste. Therefore, we propose a burnout air nozzle for a boiler. Utility Model Content

[0006] In view of this, the utility model proposes a burnout air nozzle for a boiler.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A burnout air nozzle for a boiler, comprising a boiler top cover, an adjusting assembly, a power assembly and a flap assembly; a nozzle is opened at the upper end of the boiler top cover; the adjusting assembly comprises a sliding box device, a first spring, a first fixing plate and a first clamping block; a sliding box device is slidably provided at the upper end of the boiler top cover; a first fixing plate is provided at the upper end of the boiler top cover; a side end of the sliding box device away from the nozzle direction is fixedly connected to one end of the first spring; the other end of the first spring is fixedly connected to the first fixing plate; a first clamping block is provided at the side end of the sliding box device close to the power assembly direction; the power assembly comprises a pushing device and a horizontal motion driving device; a horizontal motion driving device is fixedly provided at the upper end of the boiler top cover; an output end of the horizontal motion driving device is connected to the pushing device; the pushing device pushes the first clamping block to slide; a flap assembly is provided on the nozzle upper cover; and the side end of the flap assembly away from the nozzle direction is connected to the sliding box device.

[0009] Further, the horizontal motion driving device includes a second fixed plate, a motor, a first rotating rod, a driving gear, a second rotating rod, a driven gear and a rack;

[0010] The upper end of the boiler top cover and the lower end of the second fixing plate are fixedly connected;

[0011] The upper end of the second fixing plate is fixedly connected to the lower end of the motor;

[0012] The upper end of the output shaft of the motor is fixedly connected to the driving gear;

[0013] The driving gear and the driven gear are meshed with each other;

[0014] The central axis of the driven gear is fixedly connected to the second rotating rod;

[0015] The second rotating rod is rotatably connected to the second fixing plate;

[0016] The driven gear and the rack are meshed with each other;

[0017] The lower end of the rack is fixedly connected to the third slide block; the upper end of the second fixed plate is provided with a third slide groove; the third slide block is slidably arranged inside the third slide groove;

[0018] The pushing device is a connecting rod;

[0019] The side end of the rack close to the adjustment assembly is fixedly connected to the connecting rod;

[0020] The side end of the connecting rod close to the adjusting component is fixedly connected to the first sliding block.

[0021] Further, the sliding box device includes a sliding box and a second spring;

[0022] The interior of the sliding box is fixedly connected to one end of the second spring;

[0023] The other end of the second spring passes through the sliding box and is fixedly connected to the inner end of the first clamping block; the side end of the first clamping block close to the first fixed plate is an oblique structure;

[0024] The side end of the sliding box close to the nozzle is fixedly connected to the sliding rod.

[0025] Furthermore, the adjustment assembly further includes a first slide rail, a second slide rail, a pusher and a second block;

[0026] The upper end of the boiler top cover is fixedly connected to the lower end of the first slide rail and the lower end of the second slide rail respectively;

[0027] A slide groove is provided at the upper end of the first slide rail; a slide groove is provided at the upper end of the second slide rail; the lower end of the sliding box is slidably arranged in the slide groove of the first slide rail; the lower end of the first sliding block is slidably arranged in the slide groove of the second slide rail;

[0028] The upper end of the first slide rail is fixedly connected to the lower end of the first fixing plate;

[0029] The inner end of the pushing member is fixedly connected to the outer end of the first sliding block; the outer end of the pushing member and the outer end of the first clamping block have an overlapping portion;

[0030] The second clamping block is fixedly connected to the fixing seat;

[0031] The lower end of the fixing seat is fixedly connected to the upper end of the first slide rail; the side ends of the second clamping block and the first clamping block opposite to each other are oblique structures.

[0032] Furthermore, a first slide groove is provided at the upper end of the first slide rail;

[0033] The second sliding block is slidably arranged inside the first sliding groove;

[0034] The second sliding block is fixedly connected to the sliding rod.

[0035] Further, the flip cover assembly includes a first baffle, a first rotating shaft, a second baffle, a damper, a pleated tube, a circular ring, a second rotating shaft, a torsion spring and a fixing rod;

[0036] The second baffle cover is disposed at the upper end of the nozzle;

[0037] The side end of the second baffle close to the adjustment component is fixedly connected to the first rotating shaft;

[0038] The first rotating shaft is rotatably connected to the first baffle;

[0039] The side end of the first baffle close to the adjustment component is fixedly connected to a side end of the connecting member;

[0040] The other side end of the connecting member is fixedly connected to the sliding rod;

[0041] A damper is fixedly provided on the upper end of the second baffle;

[0042] The damper is provided with a corrugated tube, the interior of the corrugated tube is provided with a spring sheet, and the exterior of the corrugated tube is provided with a circular ring;

[0043] The second rotating shaft is fixedly disposed on the upper end of the first baffle;

[0044] The outer end sleeve of the second rotating shaft is provided with the torsion spring; the torsion spring is rotatably connected to the second rotating shaft;

[0045] The upper end of the torsion spring is fixedly connected to the lower end of the fixing rod;

[0046] The side end of the fixing rod is fixedly connected to the third rotating shaft;

[0047] The third rotating shaft is rotatably connected to one side end of the crossbar;

[0048] The other side end of the cross bar is fixedly connected to the upper end of the damper.

[0049] Furthermore, a limiting assembly is provided at the upper end of the first baffle;

[0050] The limiting assembly comprises a limiting plate, a circular hole and a first telescopic rod;

[0051] The upper end of the first baffle is fixedly connected to the lower end of the limiting plate;

[0052] The side end of the fixing rod close to the limiting plate is fixedly connected to the first telescopic rod;

[0053] A plurality of circular holes are formed on the side end surface of the limiting plate close to the first telescopic rod.

[0054] Furthermore, a protective shell is provided at the upper end of the boiler top cover;

[0055] A square groove is formed at the upper end of the protective shell;

[0056] The lower end of the protective shell is fixedly connected to the latch; the upper end of the boiler top cover is fixedly connected to the clamping seat; and the latch is inserted into the interior of the clamping seat.

[0057] Further, an upper protective plate and a lower protective plate are respectively provided on both sides of the first spring;

[0058] The lower end of the upper protective plate is fixedly connected to the upper end of the first slide rail;

[0059] The upper end of the upper protective plate is fixedly connected to the lower end of the first extension rod;

[0060] The upper end of the first extension rod is fixedly connected to the protective shell;

[0061] The second spring passes through the space between the upper protective plate and the lower protective plate; the first clamping block is located outside the upper protective plate and the lower protective plate.

[0062] Furthermore, a second slide groove is provided at the upper end of the second slide rail; and the lower end of the first slide block is slidably disposed in the second slide groove;

[0063] A third slide rail is fixedly provided at the lower end of the protective shell;

[0064] The third slide rail is slidably connected to the upper end of the second telescopic rod;

[0065] The lower end of the second telescopic rod is connected to the upper end of the first sliding block by clamping.

[0066] Compared with the existing technology, the beneficial effects of the utility model are:

[0067] (1) The burnout air nozzle for a boiler provided by the utility model can adjust the flow rate of the burnout air of the nozzle by setting an adjustment component. By accurately controlling the flow rate of the burnout air, it can ensure that the fuel is fully burned in the boiler, thereby improving the fuel utilization rate and thermal efficiency. The problem that the flow rate of the burnout air nozzle in the above-mentioned device cannot be adjusted is solved. If the burnout air volume is too large, the temperature in the furnace will decrease, and the fuel may not be completely burned, resulting in a decrease in combustion efficiency. If the burnout air volume is too small, the temperature in the furnace will be too high, increasing the risk of explosion. By setting a power component, the first slider is driven to slide in the second slide rail, thereby driving the pusher to push the first block to make the sliding box slide in the first slide rail, thereby adjusting the flow rate of the nozzle. By setting the first slide groove and the second slider, the sliding rod is prevented from shaking and deflecting when sliding.

[0068] (2) The burnout air nozzle for a boiler provided by the utility model can adjust the size of the nozzle by setting a flap assembly, so as to adjust the smoke exhaust according to the amount of internal combustion smoke. By setting a limit assembly, the fixed rod that has been adjusted is limited, thereby assisting the flap assembly to exhaust smoke. By setting a second slide groove and a sliding shaft, the first slider slides more smoothly, reducing the distance between the connecting rod and the first slider, which is more labor-saving. By setting a third slide rail and a second telescopic rod, the first slider is assisted to slide;

[0069] (3) The burnout air nozzle for a boiler provided by the utility model protects the components on the boiler top cover by providing a protective shell, facilitates installation and disassembly of the protective shell by providing a socket and a latch, and protects the first spring by providing a protective plate to prevent the first spring from shaking and popping out during adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 A three-dimensional diagram of an overfire air nozzle for a boiler provided in an embodiment of the utility model;

[0071] Figure 2 A three-dimensional diagram of the internal structure of the overburnt air nozzle for a boiler provided in an embodiment of the utility model;

[0072] Figure 3 A three-dimensional diagram of the internal structure of the overburnt air nozzle for a boiler provided in an embodiment of the utility model;

[0073] Figure 4 A three-dimensional diagram of an adjustment assembly provided in an embodiment of the utility model;

[0074] Figure 5 A three-dimensional diagram of a power assembly provided by an embodiment of the utility model;

[0075] Figure 6 A three-dimensional diagram of a flip cover assembly and a limit assembly provided in an embodiment of the utility model;

[0076] Figure 7 for Figure 6 A partial enlarged view of the

[0077] Figure 8 An exploded schematic diagram of a damper provided in an embodiment of the utility model.

[0078] In the figure: 1, boiler top cover; 2, protective shell; 3, adjustment assembly; 31, first fixed plate; 32, first slide rail; 33, second slide rail; 34, first spring; 35, sliding box; 36, second spring; 37, first clamping block; 38, pusher; 39, second clamping block; 4, power assembly; 41, second fixed plate; 42, motor; 43, first rotating rod; 44, driving gear; 45, second rotating rod; 46, driven gear; 47, rack; 48, connecting rod; 5, flip cover assembly; 51, first baffle; 52, first rotating shaft; 53, second baffle; 54, damper; 55, pleated tube; 5 6. Circular ring; 57. Second rotating shaft; 58. Torsion spring; 59. Fixed rod; 6. Limiting assembly; 61. Limiting plate; 62. Circular hole; 63. First telescopic rod; 7. First sliding block; 8. Fixed seat; 9. Sliding rod; 10. First slide groove; 11. Second sliding block; 12. Lower protective plate; 13. First extension rod; 14. Upper protective plate; 15. Second slide groove; 16. Third slide groove; 17. Third sliding block; 18. Connecting piece; 19. Cross bar; 20. Third rotating shaft; 21. Shrapnel; 22. Third slide rail; 23. Second telescopic rod; 24. Holder; 25. Latch; 26. Square groove; 27. Nozzle. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0080] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0081] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] Example:

[0083] like Figure 1-8 As shown, a burnout air nozzle for a boiler comprises a boiler top cover 1, an adjustment component 3, a power component 4, a flip cover component 5 and a limit component 6. A nozzle 27 is provided at the upper end of the boiler top cover 1.

[0084] The adjustment assembly 3 includes a sliding box device, a first spring 34, a first fixed plate 31, a first clamping block 37, a first slide rail 32, a second slide rail 33, a pusher 38 and a second clamping block 39. The sliding box device includes a sliding box 35 and a second spring 36. The upper end of the boiler top cover 1 is fixedly connected to the lower end of the first slide rail 32 and the lower end of the second slide rail 33 respectively. A slide groove is provided at the upper end of the first slide rail 32; a slide groove is provided at the upper end of the second slide rail 33; the lower end of the sliding box 35 is slidably arranged in the slide groove of the first slide rail 32; the lower end of the first slider 7 is slidably arranged in the slide groove of the second slide rail 33. The upper end of the first slide rail 32 is fixedly connected to the lower end of the first fixed plate 31.

[0085] The interior of the sliding box 35 is fixedly connected to one end of the second spring 36. The other end of the second spring 36 passes through the sliding box 35 and is fixedly connected to the inner end of the first clamping block 37. The side end of the first clamping block 37 close to the first fixed plate 31 is an oblique structure. The second clamping block 39 is fixedly connected to the fixing seat 8. The lower end of the fixing seat 8 is fixedly connected to the upper end of the first slide rail 32; the side ends of the second clamping block 39 and the first clamping block 37 opposite to each other are oblique structures.

[0086] The side end of the sliding box 35 away from the nozzle 27 is fixedly connected to one end of the first spring 34; the other end of the first spring 34 is fixedly connected to the first fixing plate 31. The side end of the sliding box 35 close to the nozzle 27 is fixedly connected to the sliding rod 9.

[0087] A first slide groove 10 is provided at the upper end of the first slide rail 32; a second slider 11 is slidably provided inside the first slide groove 10; and the second slider 11 is fixedly connected to the slide rod 9. The first slide groove 10 and the second slider 11 are provided to prevent the slide rod 9 from shaking and deflecting when sliding.

[0088] An upper protective plate 14 and a lower protective plate 12 are provided on both sides of the first spring 34. The lower end of the upper protective plate 14 is fixedly connected to the upper end of the first slide rail 32. The upper end of the upper protective plate 14 is fixedly connected to the lower end of the first extension rod 13. The upper end of the first extension rod 13 is fixedly connected to the protective shell 2. The second spring 36 passes through the space between the upper protective plate 14 and the lower protective plate 12; the first clamping block 37 is located outside the upper protective plate 14 and the lower protective plate 12. By providing the upper protective plate 14 and the lower protective plate 12, the first spring 34 is protected to prevent the first spring 34 from shaking and popping out during adjustment.

[0089] The power assembly 4 includes a pushing device and a horizontal motion driving device. The upper end of the boiler top cover 1 is fixedly provided with a horizontal motion driving device. The horizontal motion driving device includes a second fixed plate 41, a motor 42, a first rotating rod 43, a driving gear 44, a second rotating rod 45, a driven gear 46 and a rack 47. The pushing device is a connecting rod 48.

[0090] The upper end of the boiler top cover 1 is fixedly connected to the lower end of the second fixed plate 41. The upper end of the second fixed plate 41 is fixedly connected to the lower end of the motor 42. The upper end of the output shaft of the motor 42 is fixedly connected to the driving gear 44. The driving gear 44 and the driven gear 46 are meshed with each other, and the central axis of the driven gear 46 is fixedly connected to the second rotating rod 45. The second rotating rod 45 is rotationally connected to the second fixed plate 41. The driven gear 46 and the rack 47 are meshed with each other. The lower end of the rack 47 is fixedly connected to the third slider 17; the upper end of the second fixed plate 41 is provided with a third slide groove 16; the third slider 17 is slidably arranged inside the third slide groove 16. The side end of the rack 47 close to the direction of the adjustment component 3 is fixedly connected to the connecting rod 48. The side end of the connecting rod 48 close to the direction of the adjustment component 3 is fixedly connected to the first slider 7. The inner end of the push member 38 is fixedly connected to the outer end of the first sliding block 7 ; the outer end of the push member 38 and the outer end of the first clamping block 37 have an overlapping portion, and the push member 38 can push the first clamping block 37 to slide.

[0091] The second slide rail 33 has a second slide groove 15 at its upper end; the lower end of the first slider 7 is slidably disposed in the second slide groove 15. The lower end of the protective shell 2 is fixedly provided with a third slide rail 22. The third slide rail 22 is slidably connected to the upper end of the second telescopic rod 23; the lower end of the second telescopic rod 23 is connected to the upper end of the first slider 7 by a clamping connection.

[0092] In the above scheme, when the power assembly 4 drives the first slider 7 to slide, the distance between the rack 47 and the first slider 7 is too large, resulting in an excessively large force arm, making it difficult to slide. Figure 3 As shown: by setting the second slide groove 15 and the sliding shaft, the first slider 7 can slide more smoothly, reducing the distance between the connecting rod 48 and the first slider 7, which is more labor-saving. By setting the third slide rail 22 and the second telescopic rod 23, the first slider 7 is assisted in sliding.

[0093] By setting the power assembly 4, the motor 42 is turned on to drive the first rotating rod 43 to rotate, the first rotating rod 43 drives the driving gear 44 to rotate, the driving gear 44 drives the driven gear 46 to rotate, the driven gear 46 drives the rack 47 to slide in the third slide groove 16 through the third slider 17, the rack 47 drives the connecting rod 48 and the first slider 7 to slide, the first slider 7 drives the adjustment assembly 3 to work, the first slider 7 slides in the second slide rail 33, drives the pusher 38 to move, the pusher 38 pushes the first block 37 to move to the side of the first fixed plate 31, and the first spring 34 is used to release the first clamping block 37. Contraction, and then when it contacts the second block 39, since the first block 37 and the second block 39 are both beveled, and then by using the contraction of the second spring 36, when the first block 37 and the second block 39 contact, the first block 37 will contract inward, and the first block 37 and the pusher 38 are no longer in contact, and then the first block 37 and the sliding box 35 drive the sliding rod 9 to reset, completing the adjustment and reset movement, so that the flow rate of the nozzle 27 can be adjusted, and by accurately controlling the flow rate of the burnout air, it can be ensured that the fuel is fully burned in the boiler, thereby improving the utilization rate and thermal efficiency of the fuel.

[0094] The flip cover assembly 5 includes a first baffle 51 , a first rotating shaft 52 , a second baffle 53 , a damper 54 , a corrugated tube 55 , a ring 56 , a second rotating shaft 57 , a torsion spring 58 and a fixing rod 59 .

[0095] The second baffle 53 is covered on the upper end of the nozzle 27. The side end of the second baffle 53 close to the adjustment component 3 is fixedly connected to the first rotating shaft 52. The first rotating shaft 52 is rotatably connected to the first baffle 51. The side end of the first baffle 51 close to the adjustment component 3 is fixedly connected to one side end of the connecting member 18. The other side end of the connecting member 18 is fixedly connected to the sliding rod 9. A damper 54 is fixedly provided on the upper end of the second baffle 53. A pleated tube 55 is provided on the damper 54, and a spring 21 is provided inside the pleated tube 55, and a ring 56 is provided outside the pleated tube 55; a second rotating shaft 57 is fixedly provided on the upper end of the first baffle 51. A torsion spring 58 is sleeved on the outer end of the second rotating shaft 57; the torsion spring 58 is rotatably connected to the second rotating shaft 57. The upper end of the torsion spring 58 is fixedly connected to the lower end of the fixed rod 59. The side end of the fixed rod 59 is fixedly connected to the third rotating shaft 20. The third rotating shaft 20 is rotatably connected to one side end of the cross bar 19. The other side end of the cross bar 19 is fixedly connected to the upper end of the damper 54 .

[0096] The limiting assembly 6 includes a limiting plate 61, a circular hole 62 and a first telescopic rod 63. The upper end of the first baffle 51 is fixedly connected to the lower end of the limiting plate 61. The side end of the fixing rod 59 close to the limiting plate 61 is fixedly connected to the first telescopic rod 63. Three circular holes 62 are formed on the side end surface of the limiting plate 61 close to the first telescopic rod 63.

[0097] The upper end of the boiler top cover 1 is provided with a protective shell 2; a square groove 26 is provided at the upper end of the protective shell 2. The lower end of the protective shell 2 is fixedly connected to the latch 25; the upper end of the boiler top cover 1 is fixedly connected to the clamping seat 24; the latch 25 is inserted into the inside of the clamping seat 24. By providing the clamping seat 24 and the latch 25, the protective shell 2 can be easily installed and removed.

[0098] By setting the flip cover assembly 5, when there is too much smoke from burning, the opening and closing degree of the second baffle 53 can be adjusted, thereby adjusting the size of the nozzle 27, and the fixing rod 59 is moved, and the damper 54 is driven by the third rotating shaft 20 and the cross bar 19. The damper 54 can play a buffering role, and the second baffle 53 can be driven to open and close by the pleated tube 55 set on the damper 54. The pleated tube 55 can be reset by the spring piece 21 set inside, and the concave part of the pleated tube 55 is limited by the set ring 56;

[0099] The above solution also has the problem that when the flip cover assembly 5 is used for work, it is impossible to limit and fix it after the opening and closing size is determined, such as Figure 6 As shown: one end of the first telescopic rod 63 away from the fixed rod 59 is inserted into the circular hole 62, and the fixed rod 59 after adjustment is limited by setting the limiting component 6, so as to assist the flip cover component 5 to exhaust smoke.

[0100] Working principle: burnout air is introduced through the nozzle 27 to assist combustion inside the boiler. However, if the burnout air volume is too large, the temperature in the furnace will decrease, and the fuel may not be completely burned, resulting in a decrease in combustion efficiency. If the burnout air volume is too small, the temperature in the furnace will be too high, increasing the risk of explosion. By setting the power component 4, the motor 42 is turned on to drive the first rotating rod 43 to rotate, the first rotating rod 43 drives the driving gear 44 to rotate, the driving gear 44 drives the driven gear 46 to rotate, the driven gear 46 drives the rack 47 to slide in the third slide groove 16 through the third slider 17, the rack 47 drives the connecting rod 48 and the first slider 7 to slide, the first slider 7 drives the adjustment component 3 to work, and the first The slider 7 slides in the second slide rail 33, driving the pusher 38 to move, and the pusher 38 pushes the first block 37 to move toward the first fixed plate 31, and utilizes the contraction of the first spring 34. Then, when it contacts the second block 39, since the first block 37 and the second block 39 are both beveled, the contraction of the second spring 36 is utilized. When the first block 37 and the second block 39 contact, the first block 37 will contract inward, and then drive the sliding rod 9 to reset, completing the adjustment and reset movements, so that the flow rate of the nozzle 27 can be adjusted. By accurately controlling the flow rate of the burnout air, it can be ensured that the fuel is fully burned in the boiler, thereby improving the utilization rate and thermal efficiency of the fuel. By setting the flip cover assembly 5. When there is too much smoke from burning, the opening and closing degree of the second baffle 53 can be adjusted, thereby adjusting the size of the nozzle 27. The fixing rod 59 is moved, and the damper 54 is driven by the third rotating shaft 20 and the cross bar 19. The damper 54 can play a buffering role. The second baffle 53 can be driven to open and close by the pleated tube 55 set on the damper 54. The pleated tube 55 can be reset by the spring piece 21 set inside. The concave part of the pleated tube 55 is limited by the set ring 56. When the flip cover assembly 5 is used for work, it cannot be limited and fixed after the opening and closing size is determined. The fixed rod 59 that has been adjusted is limited by setting the limit assembly 6, thereby assisting the flip cover. The cover assembly 5 is used for exhausting smoke. The protective shell 2 is provided to protect the components on the boiler top cover 1. The mounting base 24 and the latch 25 are provided to facilitate installation and disassembly of the protective shell 2. The second slide groove 15 and the sliding shaft are provided to make the first slider 7 slide more smoothly, reduce the distance between the connecting rod 48 and the first slider 7, and save more effort. The third slide rail 22 and the second telescopic rod 23 are provided to assist the first slider 7 in sliding. The upper protective plate 14 and the lower protective plate 12 are provided to protect the first spring 34 to prevent the first spring 34 from shaking and popping out during adjustment. The first slide groove 10 and the second slider 11 are provided to prevent the sliding rod 9 from shaking and deflecting when sliding.

[0101] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A burnout air nozzle for a boiler, characterized in that: The boiler comprises a boiler top cover (1), an adjustment component (3), a power component (4) and a flip cover component (5); a nozzle (27) is provided at the upper end of the boiler top cover (1); the adjustment component (3) comprises a sliding box device, a first spring (34), a first fixing plate (31) and a first clamping block (37); a sliding box device is slidably provided at the upper end of the boiler top cover (1); a first fixing plate (31) is provided at the upper end of the boiler top cover (1); a side end of the sliding box device away from the nozzle (27) is fixedly connected to one end of the first spring (34); the other end of the first spring (34) is fixedly connected to the side end of the sliding box device One end is fixedly connected to the first fixed plate (31); the side end of the sliding box device close to the power assembly (4) is provided with a first clamping block (37); the power assembly (4) includes a pushing device and a horizontal motion driving device; the upper end of the boiler top cover (1) is fixedly provided with a horizontal motion driving device; the output end of the horizontal motion driving device is connected to the pushing device; the pushing device pushes the first clamping block (37) to slide; the upper cover of the nozzle (27) is provided with a flip cover assembly (5); the side end of the flip cover assembly (5) away from the nozzle (27) is connected to the sliding box device.

2. The overfire air nozzle for a boiler according to claim 1, characterized in that: The horizontal motion driving device comprises a second fixed plate (41), a motor (42), a first rotating rod (43), a driving gear (44), a second rotating rod (45), a driven gear (46) and a rack (47); The upper end of the boiler top cover (1) and the lower end of the second fixing plate (41) are fixedly connected; The upper end of the second fixing plate (41) is fixedly connected to the lower end of the motor (42); The upper end of the output shaft of the motor (42) is fixedly connected to the driving gear (44); The driving gear (44) and the driven gear (46) are meshed with each other; The central axis of the driven gear (46) and the second rotating rod (45) are fixedly connected; The second rotating rod (45) and the second fixed plate (41) are rotatably connected; The driven gear (46) and the rack (47) are meshed with each other; The lower end of the rack (47) is fixedly connected to the third slide block (17); the upper end of the second fixed plate (41) is provided with a third slide groove (16); the third slide block (17) is slidably arranged inside the third slide groove (16); The pushing device is a connecting rod (48); The side end of the rack (47) close to the adjustment assembly (3) is fixedly connected to the connecting rod (48); The side end of the connecting rod (48) close to the adjustment assembly (3) is fixedly connected to the first sliding block (7).

3. The overfire air nozzle for a boiler according to claim 2, characterized in that: The sliding box device comprises a sliding box (35) and a second spring (36); The interior of the sliding box (35) is fixedly connected to one end of the second spring (36); The other end of the second spring (36) passes through the sliding box (35) and is fixedly connected to the inner end of the first clamping block (37); the side end of the first clamping block (37) close to the first fixing plate (31) is an oblique structure; The side end of the sliding box (35) close to the nozzle (27) is fixedly connected to the sliding rod (9).

4. The overfire air nozzle for a boiler according to claim 3, characterized in that: The adjustment assembly (3) further comprises a first slide rail (32), a second slide rail (33), a pushing member (38) and a second clamping block (39); The upper end of the boiler top cover (1) is fixedly connected to the lower end of the first slide rail (32) and the lower end of the second slide rail (33) respectively; The upper end of the first slide rail (32) is provided with a slide groove; the upper end of the second slide rail (33) is provided with a slide groove; the lower end of the sliding box (35) is slidably arranged in the slide groove of the first slide rail (32); the lower end of the first sliding block (7) is slidably arranged in the slide groove of the second slide rail (33); The upper end of the first slide rail (32) and the lower end of the first fixing plate (31) are fixedly connected; The inner end of the pushing member (38) is fixedly connected to the outer end of the first sliding block (7); the outer end of the pushing member (38) and the outer end of the first clamping block (37) have an overlapping portion; The second clamping block (39) is fixedly connected to the fixing seat (8); The lower end of the fixing seat (8) is fixedly connected to the upper end of the first slide rail (32); the opposite side ends of the second clamping block (39) and the first clamping block (37) are of an oblique structure.

5. The overfire air nozzle for a boiler according to claim 4, characterized in that: A first slide groove (10) is provided at the upper end of the first slide rail (32); A second sliding block (11) is slidably disposed inside the first sliding groove (10); The second sliding block (11) and the sliding rod (9) are fixedly connected.

6. The overfire air nozzle for a boiler according to claim 5, characterized in that: The flip cover assembly (5) comprises a first baffle (51), a first rotating shaft (52), a second baffle (53), a damper (54), a pleated tube (55), a circular ring (56), a second rotating shaft (57), a torsion spring (58) and a fixing rod (59); The second baffle (53) is covered on the upper end of the nozzle (27); The side end of the second baffle (53) close to the adjustment assembly (3) is fixedly connected to the first rotating shaft (52); The first rotating shaft (52) and the first baffle (51) are rotatably connected; The side end of the first baffle (51) close to the adjustment assembly (3) is fixedly connected to a side end of the connecting member (18); The other side end of the connecting member (18) is fixedly connected to the sliding rod (9); A damper (54) is fixedly provided on the upper end of the second baffle (53); The damper (54) is provided with a corrugated tube (55), a spring sheet (21) is arranged inside the corrugated tube (55), and a circular ring (56) is arranged outside the corrugated tube (55); The second rotating shaft (57) is fixedly provided at the upper end of the first baffle (51); The outer end of the second rotating shaft (57) is sleeved with the torsion spring (58); the torsion spring (58) and the second rotating shaft (57) are rotatably connected; The upper end of the torsion spring (58) and the lower end of the fixing rod (59) are fixedly connected; The side end of the fixing rod (59) is fixedly connected to the third rotating shaft (20); The third rotating shaft (20) is rotatably connected to one side end of the crossbar (19); The other side end of the cross bar (19) is fixedly connected to the upper end of the damper (54).

7. The overfire air nozzle for a boiler according to claim 6, characterized in that: A limiting assembly (6) is provided at the upper end of the first baffle (51); The limiting assembly (6) comprises a limiting plate (61), a circular hole (62) and a first telescopic rod (63); The upper end of the first baffle (51) and the lower end of the limiting plate (61) are fixedly connected; The side end of the fixing rod (59) close to the limiting plate (61) is fixedly connected to the first telescopic rod (63); A plurality of circular holes (62) are formed on the side end surface of the limiting plate (61) close to the first telescopic rod (63).

8. The overfire air nozzle for a boiler according to claim 7, characterized in that: A protective shell (2) is provided at the upper end of the boiler top cover (1); A square groove (26) is formed at the upper end of the protective shell (2); The lower end of the protective shell (2) is fixedly connected to the latch (25); the upper end of the boiler top cover (1) is fixedly connected to the clamping seat (24); and the latch (25) is inserted into the interior of the clamping seat (24).

9. The overcombustion air nozzle for a boiler according to claim 8, characterized in that: An upper protective plate (14) and a lower protective plate (12) are respectively provided on both sides of the first spring (34); The lower end of the upper protective plate (14) and the upper end of the first slide rail (32) are fixedly connected; The upper end of the upper protective plate (14) and the lower end of the first extension rod (13) are fixedly connected; The upper end of the first extension rod (13) is fixedly connected to the protective shell (2); The second spring (36) passes through the space between the upper protective plate (14) and the lower protective plate (12); and the first clamping block (37) is located outside the upper protective plate (14) and the lower protective plate (12).

10. The overfire air nozzle for a boiler according to claim 8, characterized in that: A second slide groove (15) is provided at the upper end of the second slide rail (33); the lower end of the first slide block (7) is slidably disposed in the second slide groove (15); A third slide rail (22) is fixedly provided at the lower end of the protective shell (2); The third slide rail (22) is slidably connected to the upper end of the second telescopic rod (23); The lower end of the second telescopic rod (23) is clamped and connected to the upper end of the first sliding block (7).

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