CN214370289U

CN214370289U - Ash removal device for flue gas recirculation fan

Info

Publication number: CN214370289U
Application number: CN202023204441.3U
Authority: CN
Inventors: 南继强; 李聪; 李建坡
Original assignee: Guangdong Datang International Leizhou Power Generation Co Ltd
Current assignee: Guangdong Datang International Leizhou Power Generation Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-08
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a dust cleaning device for a flue gas recirculation fan, which relates to the technical field of flue gas recirculation fans and comprises an air outlet shell provided with an air inlet, wherein the top of the air outlet shell is provided with an air outlet, the bottom of the air outlet shell is provided with an ash bucket, and the bottom of the ash bucket is provided with an ash collecting pipe; still include the deashing mechanism, the deashing mechanism includes the deashing subassembly and does the drive assembly that the deashing subassembly provided power, the deashing subassembly is arranged in the ash bucket, the deashing subassembly includes the pivot, be provided with first flabellum in the pivot. Through setting up the deashing subassembly, specifically set up first flabellum and pivot, drive first flabellum under pivot pivoted effect, under the fan of first flabellum moves, make its coal ash can not deposit in the ash bucket, and then coal ash in the reduction ash bucket reaches the effect of clearance coal ash.

Description

Ash removal device for flue gas recirculation fan

Technical Field

The utility model relates to a flue gas recirculation fan's technical field particularly, relates to a flue gas recirculation fan ash removal device.

Background

The secondary reheating boiler is characterized in that the temperature of secondary reheating steam is difficult to reach a rated value due to the arrangement of heating surfaces, in order to improve the temperature, a plurality of flue gas recirculation fans are needed to be configured, flue gas of flue gas recirculation comes from a part of low-temperature flue gas in a boiler coal rear flue, the ash content of the part of flue gas is large, most ash is conveyed away by an ash conveying bin pump at the inlet of the flue gas recirculation fan, part of ash which is not conveyed away is left, after passing through the flue gas recirculation fan, a part of ash is conveyed back to a hearth, part of ash is deposited at the outlet of the flue gas recirculation fan, and after the fans operate for a period of time, the ash bucket at the outlet of the flue gas recirculation fan deposits more coal ash, and when the coal ash is more, the vibration of the flue gas recirculation fan is easy to cause.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flue gas recirculation fan ash removal device for realize clearing up the technological effect of sedimentary coal ash in the ash bucket.

The utility model discloses a following technical scheme realizes: the dust collector comprises an air outlet shell provided with an air inlet, wherein the top of the air outlet shell is provided with an air outlet, the bottom of the air outlet shell is provided with an ash bucket, and the bottom of the ash bucket is provided with an ash collecting pipe;

still include the deashing mechanism, the deashing mechanism includes the deashing subassembly and does the drive assembly that the deashing subassembly provided power, the deashing subassembly is arranged in the ash bucket, the deashing subassembly includes the pivot, be provided with first flabellum in the pivot.

In order to better realize the utility model discloses, it is further, drive assembly locates in the shell of airing exhaust, drive assembly includes that transmission shaft and cover are located the outer sleeve of transmission shaft, set up the second flabellum on the sleeve, the transmission shaft with the pivot transmission is connected.

In order to better realize the utility model discloses, it is further, the transmission shaft with be equipped with transmission device between the pivot, transmission device includes the transmission axle, the top of transmission axle be equipped with the grafting piece that the transmission shaft is connected, the bottom of transmission shaft locate with the inserting groove that the grafting piece matches, the bottom of transmission axle is equipped with plug-in components, plug-in components with be connected with transmission assembly between the pivot.

In order to better realize the utility model discloses, it is further, transmission assembly is including making plug-in components male insert the post, the bottom of inserting the post is equipped with the ring gear, the ring gear internal gearing has planetary gear, planetary gear has the sun gear in the meshing, the sun gear cover is located the top of pivot.

For better realization the utility model discloses, it is further, transmission device still includes control assembly, control assembly includes the shank of bolt, the one end of shank of bolt sets up the handle, the other end of shank of bolt is equipped with the spline, the transmission epaxial be equipped with spline fit's transmission key, so that drive the transmission axle rise to with the transmission shaft is connected or descend break away from with the connection of transmission shaft.

In order to better realize the utility model discloses, it is further, drive assembly still includes the mount, the tip of mount with the inner wall fixed connection of air-out shell, the mount is located the top of transmission shaft.

In order to better realize the utility model discloses, it is further, the mount has two, the sleeve is located two between the mount.

For better realization the utility model discloses, it is further, the ash collecting pipe is U type return bend.

For better realization the utility model discloses, it is further, the plug-in components are hexagonal prism.

In order to better realize the utility model discloses, it is further, the deashing subassembly still includes the mounting bracket, the tip of mounting bracket with ash bucket inner wall fixed connection, transmission assembly locates on the mounting bracket.

The utility model has the advantages that:

through setting up the deashing subassembly, specifically set up first flabellum and pivot, drive first flabellum under pivot pivoted effect, under the fan of first flabellum moves, make its coal ash can not deposit in the ash bucket, and then coal ash in the reduction ash bucket reaches the effect of clearance coal ash.

This device is through optimizing drive assembly, and this drive assembly is including the transmission shaft to set up the sleeve in the top of this transmission shaft, set up the second flabellum on this sleeve, provide power for drive assembly through the automatic ascending traction force of flue gas exhaust, thereby drive the first flabellum of below and rotate, this reasonable resource, design benefit.

This device is through setting up transmission mechanism, under transmission mechanism's transmission, makes its first flabellum can reverse acceleration operation, can increase the effort that carries out the flapping to coal ash on the ash bucket inner wall, further strengthens the effect of clearance coal ash.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings that are required to be used in the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a schematic structural view of a soot cleaning device of a flue gas recirculation fan provided by the present invention;

FIG. 2 is a schematic view of the internal structure of the ash removal device of the flue gas recirculation fan provided by the present invention;

FIG. 3 is a schematic structural view of the ash removal mechanism provided by the present invention;

fig. 4 is a schematic structural diagram of a transmission mechanism provided by the present invention;

fig. 5 is a partial cross-sectional view of a transmission assembly provided by the present invention.

Icon:

100-air outlet shell, 200-ash bucket, 300-ash collecting pipe, 400-ash removing mechanism, 410-ash removing component, 411-rotating shaft, 412-first fan blade, 413-mounting frame, 420-driving component, 421-transmission shaft, 422-sleeve, 423-second fan blade, 424-fixing frame, 500-transmission mechanism, 510-transmission shaft, 511-plug block, 512-plug-in component, 513-transmission key, 520-transmission component, 521-plug column, 522-gear ring, 523-planetary gear, 524-sun gear, 530-control component, 531-bolt rod, 532-handle and 533-spline.

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

Please refer to fig. 1-5, wherein fig. 1 is the utility model provides a structural schematic diagram of a flue gas recirculation fan ash removal device, at the in-process of fan long-term operation, ash bucket 200 of flue gas recirculation fan export often can deposit more coal ash, the coal ash accumulation is more, can lead to flue gas recirculation fan vibration big, can also influence recirculation fan operation in addition, in order to solve above-mentioned problem, this device sets up deashing mechanism 400 on air-out shell 100 and ash bucket 200, air-out shell 100 is shown in the figure, has an air intake, the top also has an air outlet simultaneously.

The ash cleaning mechanism 400 mainly comprises an ash cleaning component 410 and a driving component 420, wherein the driving component 420 provides power for the ash cleaning component 410, and if the driving component 420 is not further improved, devices such as a driving motor can be directly selected, and the specific structure of the driving component 420 is further improved in the optimal embodiment.

This drive assembly 420 mainly includes transmission shaft 421, as shown in the figure, the top of this transmission shaft 421 is equipped with sleeve 422, installs second flabellum 423 through sleeve 422, and flue gas can get into from the air intake in recirculation fan's air-out shell 100 to upwards draw forth gradually, under the effect of flue gas, makes second flabellum 423 rotation on its sleeve 422, and then drives transmission shaft 421 and rotate, and the bottom of this transmission shaft 421 is provided with deashing subassembly 410 to drive deashing subassembly 410 rotates.

In the process of rotating the second fan blade 423, in order to prevent the sleeve 422 from moving out of the transmission shaft 421, a fixing frame 424 is disposed at the top of the transmission shaft 421, and an end of the fixing frame 424 is fixedly connected to an inner wall of the air outlet casing 100, so as to reinforce the fixing frame, in order to improve the structure of the device, specifically, the sleeve 422 does not fall off at will, and therefore, preferably, two fixing frames 424 are provided, and the sleeve 422 is disposed between the two fixing frames 424.

The ash removing assembly 410 mainly includes a rotating shaft 411 and a first blade 412 disposed on the rotating shaft 411, and the first blade 412 is driven by the driving assembly 420 to rotate, so as to roll up the ash attached to the inner wall of the ash hopper 200, and the second blade 423 at the upper part is moved, so as to discharge the ash more smoothly from the direction of the air outlet, thereby reducing the effect of the ash accumulated on the ash hopper 200.

Through setting up deashing subassembly 410, specifically set up first flabellum 412 and pivot 411, drive first flabellum 412 under pivot 411 pivoted effect, under the fan-actuated of first flabellum 412, make its coal ash can not deposit in ash bucket 200, and then reduce coal ash in ash bucket 200, reach the effect of clearance coal ash.

This device is through optimizing drive assembly 420, and this drive assembly 420 is including transmission shaft 421 to set up sleeve 422 in the top of this transmission shaft 421, set up second flabellum 423 on this sleeve 422, provide power for drive assembly 420 through the automatic ascending traction force of flue gas exhaust, thereby drive the first flabellum 412 rotation of below, this reasonable resource, design benefit.

In order to make the cleaning effect of the coal ash in the ash bucket 200 better, a transmission mechanism 500 is further arranged between the transmission shaft 421 and the rotating shaft 411, the main purpose of the transmission mechanism 500 is to adjust the rotating speed of the rotating shaft 411 so as to make the energy of the rotating shaft 411 be utilized to the maximum, the transmission mechanism 500 mainly comprises a transmission shaft 510, an insertion block 511 is arranged at the top of the transmission shaft 510, an insertion groove is arranged at the bottom of the transmission shaft 421, as shown in the figure, an insertion piece 512 is arranged below the transmission shaft 510, an upper part of the transmission shaft 510 is inserted into the transmission shaft 421, and a lower part of the transmission shaft 510 is connected with the rotating shaft 411.

In addition, the transmission mechanism 500 further comprises a plug 521, and the plug 512 is plugged into the plug 521, so that the structure of the plug 512 is not more perfect, therefore, the structure of the plug 512 is preferably hexagonal prism, the inserting column 521 is internally provided with a hexagonal groove, the bottom of the inserting column 521 is provided with a gear ring 522, the inserting piece 512 transfers the rotating force to the inserting column 521, the inserting column 521 drives the gear ring 522 at the bottom to rotate, a planetary gear 523 is meshed inside the ring gear 522, the planetary gear 523 is meshed inside the ring gear 524, the sun gear 524 is meshed inside the planetary gear 523, and the rotating shaft 411 is arranged inside the sun gear 524, as shown in the figure, in the rotating process, the transmission shaft 421 transmits the force to the transmission shaft 510 in the same direction and at the same rotating speed, the transmission shaft 510 transmits the force to the rotating shaft 411 in a reverse acceleration mode through the planetary gear 523 and the like, so that the first fan blade 412 has a better effect of fanning the coal ash in the ash hopper 200, and further, the coal ash is not deposited in the ash hopper 200.

In order to improve the structure of the ash removal assembly 410, a mounting frame 413 is further provided, as shown in the figure, the end of the mounting frame is connected with the inner wall of the top of the ash bucket 200, and the transmission assembly 520 is arranged on the mounting frame 413.

In the flue gas recirculation fan, in order to reduce the loss of parts and avoid long-term operation of the components such as the ash cleaning component 410, a control component 530 is further arranged, the control component 530 is used for connecting or disconnecting the transmission shaft 421, specifically, disconnecting or connecting transmission force, the control component 530 specifically comprises a bolt rod 531 as shown in the figure, one end of the bolt rod 531 is provided with a handle 532, the other end is provided with a spline 533, in addition, a transmission key 513 is arranged on the transmission shaft 510, the spline 533 is matched with the transmission key 513 for use, by rotating the handle 532, under the action of the spline 533 driving the transmission key 513, the transmission shaft 510 is lifted to be connected with the transmission shaft 421, specifically, an insertion block 511 on the transmission shaft 510 is connected with an insertion groove at the bottom of the transmission shaft 421, so that the transmission is coaxial, and in addition, when the handle 532 is reversely operated, the spline 533 drives the transmission key 513, so that the insertion block 511 on the transmission shaft 510 is slowly disengaged from the insertion groove on the transmission shaft 421, thereby driving the transmission shaft 510 without driving the bottom.

In the whole device operation process, there is some coal ash to drop in the ash collecting pipe 300, the utility model discloses a shape of this further limited ash collecting pipe 300 to reach the effect of further processing coal ash, specifically set up ash collecting pipe 300 into the u type, as illustrated in the figure, when coal ash drops in ash collecting pipe 300, can accumulate bend department, through the mode of blowing, make its coal ash be under the effect of negative pressure, entered in air outlet shell 100 again, and discharged from the air outlet of air outlet shell 100.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A soot cleaning device of a flue gas recirculation fan, which is characterized in that,

the dust collector comprises an air outlet shell provided with an air inlet, wherein the top of the air outlet shell is provided with an air outlet, the bottom of the air outlet shell is provided with an ash bucket, and the bottom of the ash bucket is provided with an ash collecting pipe;

2. The ash removal device for the flue gas recirculation fan according to claim 1, wherein the driving assembly is arranged in the air outlet shell, the driving assembly comprises a transmission shaft and a sleeve sleeved outside the transmission shaft, a second fan blade is arranged on the sleeve, and the transmission shaft is in transmission connection with the rotating shaft.

3. The soot cleaning device of a flue gas recirculation fan as claimed in claim 2, wherein a transmission mechanism is arranged between the transmission shaft and the rotating shaft, the transmission mechanism comprises a transmission shaft, the top end of the transmission shaft is provided with an insertion block connected with the transmission shaft, the bottom of the transmission shaft is provided with an insertion groove matched with the insertion block, the bottom of the transmission shaft is provided with an insertion piece, and a transmission assembly is connected between the insertion piece and the rotating shaft.

4. The soot cleaning device of claim 3, wherein the transmission assembly comprises an insertion column into which the plug-in unit can be inserted, a gear ring is arranged at the bottom of the insertion column, a planetary gear is engaged in the gear ring, a sun gear is engaged in the planetary gear, and the sun gear is sleeved at the top of the rotating shaft.

5. The soot cleaning device of claim 4, wherein the transmission mechanism further comprises a control assembly, the control assembly comprises a bolt rod, one end of the bolt rod is provided with a handle, the other end of the bolt rod is provided with a spline, and the transmission shaft is provided with a transmission key matched with the spline so as to drive the transmission shaft to ascend to be connected with the transmission shaft or descend to be separated from being connected with the transmission shaft.

6. The ash removal device for the flue gas recirculation fan according to any one of claims 2 to 5, wherein the driving assembly further comprises a fixing frame, the end of the fixing frame is fixedly connected with the inner wall of the air outlet shell, and the fixing frame is arranged at the top of the transmission shaft.

7. The soot cleaning device of claim 6, wherein there are two of said fixing frames, and said sleeve is disposed between said two fixing frames.

8. The soot cleaning device of claim 7, wherein said soot collecting pipe is a U-shaped bent pipe.

9. The soot cleaning device of any one of claims 3 to 5, wherein the insert is a hexagonal prism.

10. The ash removal device of the flue gas recirculation fan as claimed in any one of claims 3 to 5, wherein the ash removal assembly further comprises a mounting frame, the end of the mounting frame is fixedly connected with the inner wall of the ash bucket, and the transmission assembly is arranged on the mounting frame.