CN218209541U - Flying ash recirculation device of circulating fluidized bed boiler - Google Patents

Abstract

The utility model discloses a fly ash recycling device of a circulating fluidized bed boiler, which relates to the technical field of circulating fluidized bed boilers and comprises a box body, a dust remover and a connecting plate; the internally connected of box has the connecting plate, evenly install a plurality of grey pipelines of advancing on the connecting plate, a plurality of upper ends of advancing the grey pipeline install the album grey board jointly, it has seted up into the ash mouth on the board to collect, advance the ash mouth and advance grey pipeline one-to-one, just the diameter of advancing the ash mouth is greater than the diameter of advancing the grey pipeline, the chamfer has been seted up to the bottom edge of advancing the ash mouth. This circulating fluidized bed boiler flying dust recirculation device can open whole ash inlet pipe way through rotating one of them pivot to the flying dust falls to ejection of compact subassembly, thereby gets into the boiler combustion chamber, wherein, divide into a plurality of ash inlet pipe ways and let in the flying dust, in order to avoid one of them ash inlet pipe way to block up, lets in the flying dust in can't toward the boiler, beats the ash inlet pipe way through beating the subassembly, can promote the unblocked nature of ash inlet pipe way.

Description

Flying ash recirculation device of circulating fluidized bed boiler

Technical Field

The utility model relates to a circulating fluidized bed boiler technical field specifically is a circulating fluidized bed boiler flying dust recycling device.

Background

The circulating fluidized bed boiler has the advantages of wide fuel adaptability, clean combustion and the like, so the circulating fluidized bed boiler is rapidly developed in China and has a large market share in the energy market of China. The coal is combusted in the circulating fluidized bed boiler, the generated high-temperature flue gas carries a large amount of particles to leave the boiler and then enters the cyclone separator for gas-solid separation, and due to the insufficient combustion of the pulverized coal in the hearth, the separated particles can carry a large amount of fly ash, so most of the fly ash can be captured by the dust remover and sent to the gathering part, and then the fly ash in the gathering part is sent back to the hearth through the pipeline for combustion supporting, the fly ash is recycled, combusted and utilized, and the effects of environmental protection and energy saving are achieved.

In order to conveniently burn a large amount of fly ash at one time, the fly ash needs to be gathered together and uniformly fed into a boiler, however, the fly ash recirculation device of the circulating fluidized bed boiler in the prior art cannot solve the problem that the fly ash is blocked in a pipeline after being gathered, and if a plurality of pipelines are arranged, the pipelines cannot be opened and closed at the same time.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is overcome current defect, the utility model provides a circulating fluidized bed boiler flying dust recycling device, can open whole ash inlet pipe through rotating one of them pivot, so that the flying dust falls to ejection of compact subassembly, thereby get into the boiler combustion chamber, wherein, divide into a plurality of ash inlet pipe and let in the flying dust, in order to avoid one of them ash inlet pipe blockage, it lets in the flying dust in the boiler, strike the ash inlet pipe through beating the subassembly, can promote the smoothness of ash inlet pipe, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a fly ash recirculation device of a circulating fluidized bed boiler comprises a box body, a dust remover and a connecting plate; the dust collector is characterized in that a connecting plate is connected to the inside of the box body, a plurality of dust inlet pipelines are uniformly installed on the connecting plate, an ash collecting plate is installed at the upper ends of the plurality of dust inlet pipelines together, an ash inlet is formed in the ash collecting plate, the ash inlet corresponds to the dust inlet pipelines in a one-to-one mode, the diameter of the ash inlet is larger than that of the dust inlet pipelines, a chamfer is formed at the edge of the bottom of the ash inlet, a chamfer surface is formed between the chamfer and the upper ends of the dust inlet pipelines, a first clamping groove is formed in the upper surface of the ash collecting plate, a first clamping block is installed on the lower surface of the dust collector and connected with the first clamping groove in a buckling mode, an inclined plate is installed on the inner side of the ash collecting plate, and the lower ends of the plurality of dust inlet pipelines are connected with a discharging assembly; three rotating shafts are arranged in the box body, the three ash inlet pipelines are jointly rotatably provided with one rotating shaft along the same direction, a circular plate is arranged on the rotating shaft and is positioned in the ash inlet pipelines, and two ends of the rotating shaft are respectively rotatably arranged on the inner walls of two sides of the box body; each rotating shaft is provided with a chain wheel, the three chain wheels are connected with a chain together, and the chain wheels are meshed with the chain; the end of one rotating shaft protrudes out of one side of the box body, the outer end of the rotating shaft is connected with a driving assembly, and the rotating shaft is further provided with a knocking assembly.

Further, ejection of compact subassembly includes conical plate, ash discharging pipeline and fixed plate, and the lower extreme of a plurality of ash discharging pipelines is worn to establish and is installed in the fixed plate, the conical plate is installed to the lower extreme of fixed plate, the lower port diameter of conical plate is less than the upper port diameter of conical plate, ash discharging pipeline is installed to the lower extreme of conical plate, ash discharging pipeline wears to locate the downside of box, the mounting groove has been seted up to the upper surface of fixed plate, be provided with the electrical heating board in the mounting groove, the side-mounting of electrical heating board has the second fixture block, the second draw-in groove has still been seted up to the upper surface of fixed plate, second fixture block and second draw-in groove buckle are connected. The fly ash falling to the conical plate can be enabled to conveniently flow to an ash outlet pipeline from the lower port of the conical plate through the conical plate, wherein the external controller controls the electric heating plate to work, the fly ash flowing into the conical plate is heated, and the combustion effect of the fly ash entering a boiler is improved.

Furthermore, drive assembly includes motor and motor support, the surface mounting of box has motor support, install the motor on the motor support, the output shaft of motor has the tip of the pivot of protrusion in the box outside through the coupling joint, the output of external control ware is connected to the input electricity of motor. Through the work of external control ware control motor, motor work drives the pivot and rotates to advance grey pipeline's switching through electric control, and effectively guarantee to strike the subassembly and constantly strike into grey pipeline.

Further, strike the subassembly and include the connecting rod, be connected with a plurality of connecting rods in the pivot, the mounting panel is installed jointly to the tip of a plurality of connecting rods, the downside of mounting panel is the inclined plane, install pressure spring on the inclined plane, the rubber ball is installed to pressure spring's the other end. Drive the connecting rod through the pivot and rotate, the connecting rod rotates the mounting panel and rotates, and the mounting panel rotates and drives pressure spring and rotate, and pressure spring rotates and drives the rubber ball and rotate to strike into grey pipeline through the rubber ball, wherein, pressure spring can promote the amplitude of oscillation of rubber ball, effectively increases the effect of beaing of rubber ball.

Furthermore, the connecting rod is located between the two ash inlet pipelines, and each rubber ball corresponds to one ash inlet pipeline. When the installation can be avoided through the setting of connecting rod, with advancing the interference of each other of ash pipeline to in the installation, and each advances the ash pipeline and all can be knocked.

Compared with the prior art, the beneficial effects of the utility model are that: this circulating fluidized bed boiler fly ash recirculation device has following benefit:

1. the flying ash recirculation device of the circulating fluidized bed boiler is provided with the inclined plate and the chamfer surface, under the action of the inclined plate and the chamfer surface, the diameter of the ash inlet is larger, so that flying ash can slide into the ash inlet pipeline in a smooth manner, and then the flying ash can be centralized in the ash inlet pipeline by utilizing the circular plate to block the ash inlet, thereby facilitating the unified re-melting combustion.

2. This circulating fluidized bed boiler flying dust recycling device has ejection of compact subassembly, and the conical plate through ejection of compact subassembly can make the flying dust that falls to the conical plate, conveniently flows to the ash pipe way from the lower port of conical plate, and wherein, external controller control electrical heating board work heats the flying dust that flows into in the conical plate, promotes the combustion effect that the flying dust got into the boiler.

3. This circulating fluidized bed boiler flying dust recirculation device can open whole ash inlet pipe way through rotating one of them pivot to the flying dust falls to ejection of compact subassembly, thereby gets into the boiler combustion chamber, wherein, divide into a plurality of ash inlet pipe ways and let in the flying dust, in order to avoid one of them ash inlet pipe to block up, can't let in the flying dust toward the boiler in, strike the ash inlet pipe way through beating the subassembly, can promote the unblocked nature of ash inlet pipe way.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic view of the local enlarged structure at a position of the present invention.

In the figure: the dust collector comprises a box body 1, a dust collector 2, a motor 3, a motor support 4, a first clamping block 5, a first clamping groove 6, an ash inlet 7, an ash inlet pipeline 8, a chamfered surface 9, an ash collecting plate 10, an inclined plate 11, a rotating shaft 12, a connecting rod 13, a circular plate 14, a conical plate 15, an ash outlet pipeline 16, an electric heating plate 17, a second clamping block 18, a connecting plate 19, a fixing plate 20, a chain wheel 21, a chain 22, a mounting plate 23, a compression spring 24 and a rubber ball 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present embodiment provides a technical solution: a fly ash recirculation device of a circulating fluidized bed boiler comprises a box body 1, a dust remover 2 and a connecting plate 19; the inner side of the box body 1 is connected with a connecting plate 19, a plurality of ash inlet pipelines 8 are uniformly arranged on the connecting plate 19, an ash collecting plate 10 is jointly arranged at the upper ends of the ash inlet pipelines 8, an ash inlet 7 is formed in the ash collecting plate 10, the ash inlet 7 corresponds to the ash inlet pipelines 8 one by one, the diameter of the ash inlet 7 is larger than that of the ash inlet pipeline 8, a chamfer is formed at the edge of the bottom of the ash inlet 7, a chamfer surface 9 is formed at the upper end of the ash inlet pipeline 8 by the chamfer, a first clamping groove 6 is formed in the upper surface of the ash collecting plate 10, a first clamping block 5 is arranged on the lower surface of the dust remover 2, the first clamping block 5 is connected with the first clamping groove 6 in a buckling mode, an inclined plate 11 is arranged on the inner side of the ash collecting plate 10, and a discharging assembly is connected with the lower ends of the ash inlet pipelines 8; three rotating shafts 12 are arranged in the box body 1, one rotating shaft 12 is installed on the three ash inlet pipelines 8 in a rotating mode together along the same direction, a circular plate 14 is installed on the rotating shaft 12, the circular plate 14 is located inside the ash inlet pipelines 8, and two ends of the rotating shaft 12 are installed on the inner walls of two sides of the box body 1 in a rotating mode respectively; each rotating shaft 12 is provided with a chain wheel 21, the three chain wheels 21 are connected with a chain 22 together, and the chain wheels 21 are meshed with the chain 22; wherein, the end of one rotating shaft 12 protrudes out of one side of the box body 1, the outer end of the rotating shaft is connected with a driving component, and the rotating shaft 12 is also provided with a knocking component. When the fly ash falls into the ash collecting plate 10 from the dust collector 2, under the action of the inclined plate 11 and the chamfered surface 9, and the diameter of the ash inlet 7 is larger, the fly ash can smoothly slide into the ash inlet pipeline 8, and then the circular plate 14 is used for blocking the fly ash, so that the fly ash can be concentrated in the ash inlet pipeline 8, and uniform return combustion is facilitated; however, when the fly ash falls uniformly, the ash inlet pipes 8 need to be opened one by one, and the fly ash may be blocked in the ash inlet pipes 8, the circular plate 14 is driven to rotate by rotating the rotating shaft 12, so that three of the ash inlet pipes 8 can be opened, meanwhile, the rotating shaft 12 rotates to drive the chain wheels 21 to rotate, the chain wheels 21 rotate to drive the chain 22 to rotate, so that the chain 22 rotates to drive the other two chain wheels 21 to rotate, the other two chain wheels 21 rotate to drive the rotating shaft 12 thereon to rotate, so that all the ash inlet pipes 8 can be opened, so that the fly ash falls to the discharging assembly to enter the boiler combustion chamber, wherein the fly ash is introduced into a plurality of ash inlet pipes 8 to avoid the blockage of one ash inlet pipe 8 and the failure of introducing the fly ash into the boiler, and in addition, the rotating shaft 12 drives the rapping assembly to rotate so that the ash inlet pipes 8 are knocked by the rapping assembly to vibrate the ash inlet pipes 8, thereby further improving the smoothness of the ash inlet pipes 8.

Ejection of compact subassembly includes conical plate 15, go out grey pipeline 16 and fixed plate 20, a plurality of lower extremes that advance grey pipeline 8 wear to establish and install in fixed plate 20, conical plate 15 is installed to the lower extreme of fixed plate 20, conical plate 15's lower port diameter is less than conical plate 15's upper port diameter, go out grey pipeline 16 is installed to conical plate 15's lower extreme, go out grey pipeline 16 and wear to locate the downside of box 1, the mounting groove has been seted up to the upper surface of fixed plate 20, be provided with electric heating plate 17 in the mounting groove, electric heating plate 17's side-mounting has second fixture block 18, the second draw-in groove has still been seted up to the upper surface of fixed plate 20, second fixture block 18 and second draw-in groove buckle are connected. The fly ash falling to the tapered plate 15 can be made to conveniently flow from the lower port of the tapered plate 15 to the ash outlet pipeline 16 through the tapered plate 15, wherein the external controller controls the electric heating plate 17 to work, so that the fly ash flowing into the tapered plate 15 is heated, and the combustion effect of the fly ash entering the boiler is improved.

The driving assembly comprises a motor 3 and a motor support 4, the motor support 4 is mounted on the outer surface of the box body 1, the motor 3 is mounted on the motor support 4, an output shaft of the motor 3 is connected with the end portion of a rotating shaft 12 protruding out of the box body 1 through a coupler, and the input end of the motor 3 is electrically connected with the output end of an external controller. Through the work of external controller control motor 3, motor 3 work drives pivot 12 and rotates to advance grey pipeline 8's switching through electric control, and effectively guarantee to strike the subassembly and constantly strike advancing grey pipeline 8.

The knocking component comprises connecting rods 13, a plurality of connecting rods 13 are connected to one rotating shaft 12, a mounting plate 23 is mounted at the end portions of the connecting rods 13, the lower side of the mounting plate 23 is an inclined plane, a compression spring 24 is mounted on the inclined plane, and a rubber ball 25 is mounted at the other end of the compression spring 24. Drive connecting rod 13 through pivot 12 and rotate, connecting rod 13 rotates mounting panel 23 and rotates, and mounting panel 23 rotates and drives hold-down spring 24 and rotate, and hold-down spring 24 rotates and drives rubber ball 25 and rotate to strike ash inlet pipe 8 through rubber ball 25, wherein, hold-down spring 24 can promote the amplitude of swing of rubber ball 25, effectively increases the effect of beating of rubber ball 25. The connecting rod 13 is located between the two ash inlet pipes 8, and each rubber ball 25 corresponds to one ash inlet pipe 8. The connecting rods 13 are arranged to avoid mutual interference with the ash inlet pipes 8 during installation, so that the ash inlet pipes 8 can be installed conveniently, and each ash inlet pipe 8 can be knocked.

The utility model provides a pair of circulating fluidized bed boiler flying dust recirculation device's theory of operation as follows: when the fly ash falls into the ash collecting plate 10 from the dust collector 2, under the action of the inclined plate 11 and the chamfer surface 9, and the diameter of the ash inlet 7 is larger, the fly ash can slide into the ash inlet pipeline 8 in a smooth manner, and then the fly ash is blocked by the circular plate 14, so that the fly ash can be concentrated in the ash inlet pipeline 8, and the uniform return combustion is convenient; however, when the fly ash falls uniformly, the ash inlet pipes 8 need to be opened one by one, and the fly ash may be blocked in the ash inlet pipes 8, the circular plate 14 is driven to rotate by rotating the rotating shaft 12, so that three of the ash inlet pipes 8 can be opened, meanwhile, the rotating shaft 12 rotates to drive the chain wheels 21 to rotate, the chain wheels 21 rotate to drive the chain 22 to rotate, so that the chain 22 rotates to drive the other two chain wheels 21 to rotate, the other two chain wheels 21 rotate to drive the rotating shaft 12 thereon to rotate, so that all the ash inlet pipes 8 can be opened, so that the fly ash falls to the discharging assembly to enter the boiler combustion chamber, wherein the fly ash is introduced into a plurality of ash inlet pipes 8 to avoid the blockage of one ash inlet pipe 8 and the failure of introducing the fly ash into the boiler, and in addition, the rotating shaft 12 drives the rapping assembly to rotate so that the ash inlet pipes 8 are knocked by the rapping assembly to vibrate the ash inlet pipes 8, thereby further improving the smoothness of the ash inlet pipes 8. The fly ash falling to the tapered plate 15 can be made to conveniently flow from the lower port of the tapered plate 15 to the ash outlet pipeline 16 through the tapered plate 15, wherein the external controller controls the electric heating plate 17 to work, so that the fly ash flowing into the tapered plate 15 is heated, and the combustion effect of the fly ash entering the boiler is improved. Through the work of external controller control motor 3, motor 3 work drives pivot 12 and rotates to advance grey pipeline 8's switching through electric control, and effectively guarantee to strike the subassembly and constantly strike advancing grey pipeline 8. Drive connecting rod 13 through pivot 12 and rotate, connecting rod 13 rotates mounting panel 23 and rotates, and mounting panel 23 rotates and drives hold-down spring 24 and rotate, and hold-down spring 24 rotates and drives rubber ball 25 and rotate to strike ash inlet pipe 8 through rubber ball 25, wherein, hold-down spring 24 can promote the amplitude of swing of rubber ball 25, effectively increases the effect of beating of rubber ball 25. The connecting rods 13 are arranged to avoid mutual interference with the ash inlet pipes 8 during installation, so that the ash inlet pipes 8 can be installed conveniently, and each ash inlet pipe 8 can be knocked.

It should be noted that in this embodiment, the core chip of the external controller is an STC single chip microcomputer, the specific model is STC15W204S, the motor 3 and the electric heating plate 17 can be freely configured according to the actual application scenario, and the motor 3 can be a JE series single-phase servo motor manufactured by mitsubishi motors (china) ltd. The external controller controls the operation of the motor 3 and the electric heating plate 17 in a conventional manner in the art.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (5)

1. A circulating fluidized bed boiler fly ash recycling device is characterized in that: comprises a box body (1), a dust remover (2) and a connecting plate (19);

the dust collector is characterized in that a connecting plate (19) is connected to the interior of the box body (1), a plurality of dust inlet pipelines (8) are uniformly installed on the connecting plate (19), a dust collecting plate (10) is installed at the upper ends of the dust inlet pipelines (8) together, a dust inlet (7) is formed in the dust collecting plate (10), the dust inlet (7) and the dust inlet pipelines (8) are in one-to-one correspondence, the diameter of the dust inlet (7) is larger than that of the dust inlet pipelines (8), a chamfer is formed at the bottom edge of the dust inlet (7), a chamfer surface (9) is formed at the upper end of the dust inlet pipeline (8) and is provided with a first clamping groove (6), a first clamping block (5) is installed on the lower surface of the dust collector (2), the first clamping block (5) is connected with the first clamping groove (6) in a buckling mode, an inclined plate (11) is installed on the inner side of the dust collecting plate (10), and the lower ends of the dust inlet pipelines (8) are connected with a discharging assembly; three rotating shafts (12) are arranged in the box body (1), the three ash inlet pipelines (8) are jointly rotatably provided with one rotating shaft (12) along the same direction, circular plates (14) are arranged on the rotating shafts (12), the circular plates (14) are positioned in the ash inlet pipelines (8), and two ends of the rotating shafts (12) are respectively rotatably arranged on the inner walls of two sides of the box body (1);

each rotating shaft (12) is provided with a chain wheel (21), the three chain wheels (21) are connected with a chain (22) together, and the chain wheels (21) are meshed with the chains (22);

the end part of one rotating shaft (12) protrudes out of one side of the box body (1), the outer end of the rotating shaft is connected with a driving assembly, and the rotating shaft (12) is further provided with a knocking assembly.

2. The circulating fluidized bed boiler fly ash recirculation apparatus of claim 1, wherein: the ejection of compact subassembly includes conical plate (15), ash discharging pipe way (16) and fixed plate (20), and the lower extreme of a plurality of ash discharging pipe ways (8) wears to establish and installs in fixed plate (20), conical plate (15) are installed to the lower extreme of fixed plate (20), the lower port diameter of conical plate (15) is less than the upper port diameter of conical plate (15), ash discharging pipe way (16) are installed to the lower extreme of conical plate (15), ash discharging pipe way (16) wear to locate the downside of box (1), the mounting groove has been seted up to the upper surface of fixed plate (20), be provided with electric heating plate (17) in the mounting groove, the side-mounting of electric heating plate (17) has second fixture block (18), the second draw-in groove has still been seted up to the upper surface of fixed plate (20), second fixture block (18) and second draw-in groove buckle are connected.

3. A circulating fluidized bed boiler fly ash recirculation apparatus according to claim 1, wherein: the drive assembly comprises a motor (3) and a motor support (4), the motor support (4) is mounted on the outer surface of the box body (1), the motor (3) is mounted on the motor support (4), an output shaft of the motor (3) is connected with the end portion of a rotating shaft (12) protruding out of the box body (1) through a coupler, and the output end of the external controller is electrically connected with the input end of the motor (3).

4. The circulating fluidized bed boiler fly ash recirculation apparatus of claim 1, wherein: strike the subassembly and include connecting rod (13), be connected with a plurality of connecting rods (13) on pivot (12), mounting panel (23) are installed jointly to the tip of a plurality of connecting rods (13), the downside of mounting panel (23) is the inclined plane, install pressure spring (24) on the inclined plane, rubber ball (25) are installed to the other end of pressure spring (24).

5. The circulating fluidized bed boiler fly ash recirculation apparatus of claim 4, wherein: the connecting rod (13) is positioned between the two ash inlet pipelines (8), and each rubber ball (25) corresponds to one ash inlet pipeline (8).

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