阅读说明：本技术 一种节能循环流化床锅炉风机 (Energy-saving circulating fluidized bed boiler fan ) 是由 黄勇 于 2021-08-23 设计创作，主要内容包括：本发明属于锅炉风机技术领域,尤其是一种节能循环流化床锅炉风机,包括燃烧箱,所述燃烧箱一侧连通有进气管,燃烧箱另一侧连通有出气管,出气管内固定有引风机本体,燃烧箱内固定有隔板,隔板顶部开设有多组安装槽,安装槽底部内壁固定有第一弹簧,第一弹簧顶部固定有活动块,活动块内固定有永磁铁。本发明中,环形磁铁对活动块内的永磁铁产生磁力,当环形磁铁位于永磁铁的左侧时,对永磁铁产生吸力,当环形磁铁运动至永磁铁右侧时,对永磁铁产生斥力,并在第一弹簧的作用下,使得活动块进行高频的上下抖动,从而将灰屑抖动,灰屑扬起,从而加速灰屑从漏料孔下落,并加速未完全燃烧的煤颗粒进一步燃烧。(The invention belongs to the technical field of boiler fans, and particularly relates to an energy-saving circulating fluidized bed boiler fan which comprises a combustion box, wherein one side of the combustion box is communicated with an air inlet pipe, the other side of the combustion box is communicated with an air outlet pipe, an induced draft fan body is fixed in the air outlet pipe, a partition plate is fixed in the combustion box, a plurality of groups of mounting grooves are formed in the top of the partition plate, a first spring is fixed on the inner wall of the bottom of each mounting groove, a movable block is fixed on the top of each first spring, and a permanent magnet is fixed in each movable block. According to the invention, the annular magnet generates magnetic force on the permanent magnet in the movable block, when the annular magnet is positioned on the left side of the permanent magnet, attraction force is generated on the permanent magnet, when the annular magnet moves to the right side of the permanent magnet, repulsion force is generated on the permanent magnet, and the movable block is subjected to high-frequency up-and-down shaking under the action of the first spring, so that ash is shaken and lifted, and then falling of the ash from the material leakage hole is accelerated, and further combustion of incompletely combusted coal particles is accelerated.)

1. An energy-saving circulating fluidized bed boiler fan comprises a combustion box (1) and is characterized in that one side of the combustion box (1) is communicated with an air inlet pipe (2), the other side of the combustion box (1) is communicated with an air outlet pipe (3), an induced draft fan body is fixedly connected in the air outlet pipe (3), a mesh enclosure (4) is fixedly connected in the air outlet pipe (3), a partition plate (5) is fixedly connected in the combustion box (1), dense material leakage holes (6) are formed in the top of the partition plate (5) in a penetrating manner, a plurality of groups of uniformly distributed mounting grooves (7) are formed in the top of the partition plate (5), a first spring (8) is fixedly connected to the inner wall of the bottom of each mounting groove (7), a movable block (9) is fixedly connected to the top of the first spring (8), a permanent magnet is fixedly connected in each movable block (9), a combustion promoting mechanism is arranged on each movable block (9), and a limiting mechanism is arranged in each mounting groove (7), a traction mechanism is arranged in the combustion box (1).

2. The energy-saving circulating fluidized bed boiler fan as claimed in claim 1, wherein the combustion promoting mechanism comprises fan blades (13), the top of the movable block (9) is rotatably connected with a connecting shaft (12), and the fan blades (13) are fixedly connected to the top of the connecting shaft (12).

3. The energy-saving circulating fluidized bed boiler fan according to claim 1, wherein the limiting mechanism comprises a limiting block (11), limiting grooves (10) are formed in inner walls of two sides of the mounting groove (7), the limiting block (11) is slidably connected with the limiting grooves (10), and the limiting block (11) is fixedly connected with the movable block (9).

4. The energy-saving circulating fluidized bed boiler fan as claimed in claim 1, draw mechanism includes fixed block (14), fixed block (14) fixed connection is in burning box (1) top inner wall, guide way (15) have been seted up to fixed block (14) bottom, sliding connection has guide block (16) in guide way (15), the same guide spring (17) of fixedly connected with between guide block (16) and guide way (15) lateral wall, guide block (16) bottom fixedly connected with connecting rod (18), connecting rod (18) bottom fixedly connected with fixed plate (19), fixed plate (19) set up in baffle (5) top, a plurality of evenly distributed's of fixedly connected with mounting bracket (20) in fixed plate (19) bottom, mounting bracket (20) bottom is provided with a plurality of evenly distributed's annular magnet (21), fixed plate (19) are close to intake pipe (2) one side fixedly connected with closing plate (24).

5. An energy-saving circulating fluidized bed boiler fan according to claim 4, characterized in that the cross section of the guide groove (15) is arranged to be rectangular.

6. An energy-saving circulating fluidized bed boiler fan according to claim 4, characterized in that the cross section of the guide groove (15) is arranged in an arc shape.

7. An energy-saving circulating fluidized bed boiler fan according to any one of the claims 5 or 6, characterized in that the ring-shaped magnet (21) is fixedly connected with the inner wall of the bottom of the mounting frame (20).

8. The energy-saving circulating fluidized bed boiler fan as claimed in any one of claims 5 or 6, wherein a straight shaft (22) is rotatably connected to the bottom of the mounting frame (20), a fixed disk (23) is fixedly connected to the bottom of the straight shaft (22), and the fixed disk (23) is fixedly connected with the annular magnet (21).

9. The energy-saving circulating fluidized bed boiler fan according to claim 1, wherein a discharge port (25) is formed in the bottom of the combustion box (1) in a penetrating manner, discharge doors (26) are hinged to inner walls of two sides of the discharge port (25), and a bolt (32) is fixedly connected to the bottoms of the discharge doors (26).

10. The energy-saving circulating fluidized bed boiler fan according to claim 9, wherein the inner walls of the two sides of the combustion box (1) are both provided with a chute (28), the chute (28) is slidably connected with a sliding block (29), the same second spring (30) is fixedly connected between the sliding block (29) and the inner wall of the chute (28), the inner walls of the two sides of the combustion box (1) are both hinged with a material guide plate (27), the material guide plate (27) is arranged between the partition plate (5) and the discharge hole (25), and the same support rod (31) is hinged between the material guide plate (27) and the sliding block (29).

Technical Field

The invention relates to the technical field of boiler fans, in particular to an energy-saving circulating fluidized bed boiler fan.

Background

The fluidized bed boiler desulfurization is a kind of in-furnace combustion desulfurization process, and uses limestone as desulfurization absorbent, and the coal and limestone are fed into the lower portion of combustion chamber of the boiler, and the primary air is fed into the lower portion of air-distributing plate, and the secondary air is fed into the middle portion of combustion chamber. The Circulating Fluidized Bed Combustion (CFBC) technology refers to a technology in which small particles of coal and air are in a boiling state in a hearth, namely, high-speed airflow is in full contact combustion with carried dense suspended coal particles.

The combustion-supporting air supply and the fume emission of circulating fluidized bed boiler adopt drum, draught fan, and the draught fan is used for letting in the air in the boiler, increases the oxygen concentration in the boiler, and burning with higher speed, the draught fan is used for discharging the flue gas that the burning produced from the boiler, and current draught fan is at the in-process of discharging the flue gas, because contain the coal particle of insufficient combustion in the flue gas, by direct discharge, cause the pollution to the air, consequently make corresponding improvement to this problem.

Disclosure of Invention

Based on the technical problem that the induced draft fan in the existing fluidized bed boiler cannot treat the flue gas, the invention provides an energy-saving circulating fluidized bed boiler fan.

The invention provides an energy-saving circulating fluidized bed boiler fan, which comprises a combustion box, wherein one side of the combustion box is communicated with an air inlet pipe, the other side of the combustion box is communicated with an air outlet pipe, a draught fan body is fixed in the air outlet pipe through a bolt, a net cover is fixed in the air outlet pipe through a bolt, a partition plate is fixed in the combustion box through a bolt, densely distributed material leaking holes are formed in the top of the partition plate in a penetrating manner, a plurality of groups of uniformly distributed mounting grooves are formed in the top of the partition plate, a first spring is fixed on the inner wall of the bottom of the mounting groove through a bolt, a movable block is fixed on the top of the first spring through a bolt, a permanent magnet is fixed in the movable block through a bolt, a combustion promoting mechanism is arranged on the movable block, a limiting mechanism is arranged in each mounting groove, and a traction mechanism is arranged in the combustion box.

Preferably, the combustion promoting mechanism comprises fan blades, the top of the movable block is rotatably connected with a connecting shaft through a bearing, and the fan blades are fixed on the top of the connecting shaft through bolts.

Preferably, stop gear includes the stopper, and the spacing groove has all been seted up to mounting groove both sides inner wall, stopper and spacing groove sliding connection, pass through the bolt fastening between stopper and the movable block.

Preferably, drive mechanism includes the fixed block, the fixed block passes through the bolt fastening in burning box top inner wall, the guide way has been seted up to the fixed block bottom, sliding connection has the guide block in the guide way, there is same guide spring through the bolt fastening between guide block and the guide way lateral wall, there is the connecting rod guide block bottom through the bolt fastening, there is the fixed plate connecting rod bottom through the bolt fastening, the fixed plate sets up in the baffle top, there are a plurality of evenly distributed's mounting bracket bottom the fixed plate through the bolt fastening, the mounting bracket bottom is provided with a plurality of evenly distributed's annular magnet, the fixed plate is close to intake pipe one side and has the closing plate through the bolt fastening.

Preferably, the guide groove is provided with a rectangular cross section.

Preferably, the guide groove is provided in an arc shape in cross section.

Preferably, the annular magnet and the inner wall of the bottom of the mounting frame are fixed through bolts.

Preferably, the bottom of the mounting frame is rotatably connected with a straight shaft through a bearing, the bottom of the straight shaft is fixedly provided with a fixed disc through a bolt, and the fixed disc and the annular magnet are fixed through a bolt.

Preferably, the combustion box bottom runs through and has seted up the discharge gate, and discharge gate both sides inner wall articulates there is the discharge door, and the discharge door bottom has the bolt through the bolt fastening.

Preferably, the spout has all been seted up to combustion box both sides inner wall, and sliding connection has the slider in the spout, has same second spring through the bolt fastening between slider and the spout inner wall, and combustion box both sides inner wall all articulates there is the stock guide, and the stock guide sets up between baffle and discharge gate, and it has same bracing piece to articulate between stock guide and the slider.

Compared with the prior art, the invention provides an energy-saving circulating fluidized bed boiler fan, which has the following beneficial effects:

1. the energy-saving circulating fluidized bed boiler fan comprises a fan body, a fan blade, a guide spring, a guide groove, a fixing plate, a mounting frame and an annular magnet, wherein smoke in the boiler enters a combustion box from an air inlet pipe, the burner carries out secondary combustion on the smoke, most of coal particles completely combusted become ash and fall on the partition plate, and a small amount of incompletely combusted coal particles fall on the partition plate, in the combustion process, oxygen is gradually consumed, so that the air pressure in the combustion box has a weakening trend, the temperature in the combustion box rises, the air pressure in the combustion box has a strengthening trend, the air pressure in the combustion box has a weakening trend, the sealing plate is subjected to unstable air pressure action, the sealing plate is driven to reciprocate by the guide groove under the action of the guide spring, then the connecting rod, the fixing plate, the mounting frame and the annular magnet move synchronously, when annular magnet is located the left side of permanent magnet, produce suction to the permanent magnet, when annular magnet moved to the permanent magnet right side, produce the repulsion to the permanent magnet, and under the effect of first spring, make the movable block carry out the upper and lower shake of high frequency, thereby with the ash bits shake, the ash bits is kicked up, thereby the ash bits falls from the hole that leaks with higher speed, and further burning of the coal particle of burning incompletely with higher speed, make the flabellum take place to rotate simultaneously, the kicking up scope of ash bits can be improved to the pivoted fan, promote above-mentioned effect.

2. This energy-conserving circulating fluidized bed boiler fan, the guide way cross-section sets to the arc, can be so that the global motion route of connecting rod, fixed plate, mounting bracket and annular magnet be the arc to make annular magnet carry out the interact at more angles at the in-process that removes, the permanent magnet on the movable block to the difference, thereby improve the frequency of motion of movable block, thereby further promote the whereabouts of grid and the burning of coal particle.

3. This energy-conserving circulating fluidized bed boiler fan, on the guide plate was fallen to the ash bits, through the guide effect of guide plate for the ash bits are concentrated and are piled up in the discharge door top, through opening the discharge door, can clear up the ash bits, and under the effect of unstable atmospheric pressure and second spring in the combustion box, make the guide plate take place to rotate, thereby it is complete to accelerate the ash bits blanking, prevents to pile up.

4. This energy-conserving circulating fluidized bed boiler fan, when connecting rod, fixed plate, mounting bracket and annular magnet wholly remove, annular magnet can follow the fixed disk and the straight axle takes place to rotate, this moment, when annular magnet rotates, annular magnet's south north magnetic pole position can rotate to permanent magnet to on the movable block forms not equidirectional, not the magnetic force of equidimension, thereby further improve the frequency of shake from top to bottom of movable block, thereby further promote the whereabouts of ash bits and the burning of coal particle.

Drawings

FIG. 1 is a schematic view of a first angular structure of a fan of an energy-saving circulating fluidized bed boiler according to the present invention;

FIG. 2 is a schematic diagram of a second angle structure of the fan of the energy-saving circulating fluidized bed boiler according to the present invention;

FIG. 3 is an enlarged schematic structural view of a blower of an energy-saving circulating fluidized bed boiler at the position A;

FIG. 4 is a schematic cross-sectional view of a partition plate of a fan of an energy-saving circulating fluidized bed boiler according to the present invention;

FIG. 5 is a schematic view of a ring magnet mounting structure of a fan of an energy-saving circulating fluidized bed boiler according to the present invention;

fig. 6 is an enlarged schematic structural diagram of a position B of the fan of the energy-saving circulating fluidized bed boiler provided by the invention.

In the figure: 1. a combustion box; 2. an air inlet pipe; 3. an air outlet pipe; 4. a mesh enclosure; 5. a partition plate; 6. a material leaking hole; 7. mounting grooves; 8. a first spring; 9. a movable block; 10. a limiting groove; 11. a limiting block; 12. a connecting shaft; 13. a fan blade; 14. a fixed block; 15. a guide groove; 16. a guide block; 17. a guide spring; 18. a connecting rod; 19. a fixing plate; 20. a mounting frame; 21. a ring magnet; 22. a straight shaft; 23. fixing the disc; 24. a sealing plate; 25. a discharge port; 26. a discharge door; 27. a material guide plate; 28. a chute; 29. a slider; 30. a second spring; 31. a support bar; 32. and (4) a bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-4 and fig. 6, an energy-saving circulating fluidized bed boiler fan comprises a combustion box 1, one side of the combustion box 1 is communicated with an air inlet pipe 2, the other side of the combustion box 1 is communicated with an air outlet pipe 3, an induced draft fan body is fixed in the air outlet pipe 3 through bolts, a mesh enclosure 4 is fixed in the air outlet pipe 3 through bolts, a partition plate 5 is fixed in the combustion box 1 through bolts, the top of the partition plate 5 is provided with densely distributed material leaking holes 6 in a penetrating manner, the top of the partition plate 5 is provided with a plurality of groups of uniformly distributed mounting grooves 7, the inner wall of the bottom of the mounting groove 7 is fixed with a first spring 8 through bolts, the top of the first spring 8 is fixed with a movable block 9 through bolts, a permanent magnet is fixed in the movable block 9 through bolts, the movable block 9 is provided with a combustion promoting mechanism, a limiting mechanism is arranged in the mounting groove 7, a traction mechanism is arranged in the combustion box 1, under the action of the traction mechanism and the first spring 8, make the movable block 9 carry out the upper and lower shake of high frequency to shake the ash bits, the ash bits is raised, thereby the ash bits falls from the small opening 6 with higher speed, and the further burning of the coal granule of not burning completely is accelerated.

Further, the combustion promoting mechanism comprises fan blades 13, the top of the movable block 9 is rotatably connected with a connecting shaft 12 through a bearing, the fan blades 13 are fixed at the top of the connecting shaft 12 through bolts, the fan blades 13 rotate, and the lifting range of the dust can be improved by the aid of the rotating fan 13.

Further, stop gear includes stopper 11, and spacing groove 10 has all been seted up to 7 both sides inner walls of mounting groove, stopper 11 and spacing groove 10 sliding connection, through the bolt fastening between stopper 11 and the movable block 9, can carry out spacing removal to movable block 9.

Further, the traction mechanism comprises a fixed block 14, the fixed block 14 is fixed on the inner wall of the top of the combustion box 1 through bolts, a guide groove 15 is formed in the bottom of the fixed block 14, a guide block 16 is connected in the guide groove 15 in a sliding manner, the same guide spring 17 is fixed between the guide block 16 and the side wall of the guide groove 15 through bolts, a connecting rod 18 is fixed at the bottom of the guide block 16 through bolts, a fixed plate 19 is fixed at the bottom of the connecting rod 18 through bolts, the fixed plate 19 is arranged above the partition plate 5, a plurality of uniformly distributed mounting frames 20 are fixed at the bottom of the fixed plate 19 through bolts, a plurality of uniformly distributed annular magnets 21 are arranged at the bottom of the mounting frames 20, a sealing plate 24 is fixed at one side of the fixed plate 19 close to the air inlet pipe 2 through bolts, in the combustion process, oxygen is gradually consumed, so that the pressure in the combustion box 1 has a weakening tendency, and the temperature in the combustion box 1 rises, make 1 interior gas pressure of combustion box have the reinforcing trend, the work of draught fan body is with the gas outgoing in the combustion box 1 for 1 interior gas pressure of combustion box has the trend of weakening, leads to closing plate 24 to receive unstable atmospheric pressure effect, and under guide spring 17's effect, makes closing plate 24 follow guide way 15 and carry out reciprocating motion.

Further, the guide groove 15 is formed in a rectangular cross section, so that the ring magnet 21 can perform a linear motion.

Further, the cross-section of the guide groove 15 is set to be arc-shaped, so that the whole movement path of the connecting rod 18, the fixing plate 19, the mounting frame 20 and the annular magnet 21 is arc-shaped, so that the annular magnet 21 interacts with the permanent magnets on different movable blocks 9 at more angles in the moving process, the movement frequency of the movable blocks 9 is improved, and the falling of ash chips and the combustion of coal particles are further promoted.

Further, the ring magnet 21 and the inner wall of the bottom of the mounting frame 20 are fixed by bolts, so that the ring magnet 21 can be fixed.

Further, 1 bottom of combustion box runs through and has seted up discharge gate 25, and the inner wall of discharge gate 25 both sides articulates there is discharge door 26, and discharge door 26 bottom has bolt 32 through the bolt fastening, can unify the processing to the ash bits.

Further, spout 28 has all been seted up to 1 both sides inner wall of burning box, sliding connection has slider 29 in spout 28, there is same second spring 30 through the bolt fastening between slider 29 and the 28 inner walls of spout, 1 both sides inner wall of burning box all articulates there is stock guide 27, stock guide 27 sets up between baffle 5 and discharge gate 25, it has same bracing piece 31 to articulate between stock guide 27 and the slider 29, the ash bits fall on stock guide 27, and under unstable atmospheric pressure and second spring 30's the effect in burning box 1, make stock guide 27 take place to rotate, thereby ash bits blanking is complete with higher speed, prevent to pile up.

The working principle is as follows: when the device is used, a combustor in the draught fan body and the combustion box 1 is started, smoke in a boiler enters the combustion box 1 from the air inlet pipe 2, the combustor carries out secondary combustion on the smoke, most of completely combusted coal particles become ash chips and fall onto the partition plate 5, and a small amount of incompletely combusted coal particles fall onto the partition plate 5, in the combustion process, the sealing plate 24 is subjected to unstable air pressure, the sealing plate 24 moves back and forth along with the guide groove 15 under the action of the guide spring 17, then the connecting rod 18, the fixed plate 19, the mounting frame 20 and the annular magnet 21 are synchronously driven to move, the annular magnet 21 generates magnetic force on the permanent magnet in the movable block 9, the movable block 9 shakes up and down at high frequency, the ash chips are lifted, the ash chips fall from the material leakage hole 6, the incompletely combusted coal particles are further combusted, and the fan blades 13 are rotated, on the ash bits fell to stock guide 27, through stock guide 27's guide effect for the ash bits are concentrated and are piled up in ejection of compact door 26 top, through opening ejection of compact door 26, can clear up the ash bits, and under the effect of unstable atmospheric pressure and second spring 30 in combustion box 1, make stock guide 27 take place to rotate, and the ash bits blanking is complete with higher speed.

Example 2

Referring to fig. 5, an energy-conserving circulating fluidized bed boiler fan, the mounting bracket 20 bottom is connected with the straight axle 22 through the bearing rotation, there is fixed disk 23 straight axle 22 bottom through the bolt fastening, through the bolt fastening between fixed disk 23 and the annular magnet 21, when connecting rod 18, fixed plate 19, when mounting bracket 20 and annular magnet 21 wholly remove, annular magnet 21 can follow fixed disk 23 and straight axle 22 and take place to rotate, at this moment, when annular magnet 21 rotates, the south north magnetic pole position of annular magnet 21 can rotate, thereby form different position to the permanent magnet on the movable block 9, the magnetic force of equidimension not, thereby further improve the frequency of shaking from top to bottom of movable block 9, thereby further promote the whereabouts of ash bits and the burning of coal particle.

The working principle is as follows: when the movable block 9 shaking device is used, when the connecting rod 18, the fixing plate 19, the mounting frame 20 and the annular magnet 21 integrally move, the annular magnet 21 can rotate along with the fixed plate 23 and the straight shaft 22 to form magnetic forces with different directions and different sizes on the permanent magnet on the movable block 9, so that the movable block 9 shakes up and down.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.