CN214948990U

CN214948990U - Feeding device for circulating fluidized bed boiler

Info

Publication number: CN214948990U
Application number: CN202121141912.2U
Authority: CN
Inventors: 刘成民; 许双平
Original assignee: Zhengzhou Donglin Protection Equipment Co ltd
Current assignee: Zhengzhou Donglin Protection Equipment Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-11-30
Anticipated expiration: 2031-05-24

Abstract

The application relates to the technical field of boilers, in particular to a feeding device for a circulating fluidized bed boiler, which comprises a charging basket and a crushing mechanism, wherein the charging basket is obliquely arranged, the charging basket is provided with a first supporting leg, a feeding hole and a discharging hole, a filter screen is arranged in the discharging hole, the filter screen is obliquely arranged, and the discharging hole is provided with a material guide channel for connecting the interior of the boiler; the crushing mechanism comprises a rotating rod and a motor, wherein the rotating rod is rotatably connected to the inner wall of the charging basket, the motor is arranged on the charging basket, an output shaft of the motor is connected to the rotating rod, and a plurality of crushing blades are arranged on the rotating rod. The application can improve the utilization rate of the coal briquette.

Description

Feeding device for circulating fluidized bed boiler

Technical Field

The application relates to the technical field of boilers, in particular to a feeding device for a circulating fluidized bed boiler.

Background

Circulating fluidized bed boilers are the most industrialized clean coal combustion technology. The circulating fluidized bed boiler adopts fluidized combustion, and the main structure comprises a combustion chamber and a circulating furnace. The biggest difference between the method and the bubbling fluidized bed combustion technology is that the operation wind speed is high, the heterogeneous reaction processes such as combustion, desulfurization and the like are strengthened, and the boiler capacity can be expanded to a large capacity acceptable by the power industry. The circulating fluidized bed boiler well solves the basic problems of thermology, mechanics, materials and the like and the engineering problems of expansion, abrasion, over temperature and the like, and becomes an advanced technology for utilizing the energy of the nonflammable solid fuel.

When the boiler is used, workers need to add coal blocks into the boiler through the feeding device.

However, because the volume of the coal is large, the coal is often not sufficiently combusted, and the utilization rate of the coal is low, so that improvement is needed.

Disclosure of Invention

In order to improve the utilization rate of the coal briquettes, the application provides a feeding device for a circulating fluidized bed boiler.

The application provides a feed arrangement for circulating fluidized bed boiler adopts following technical scheme: a feeding device for a circulating fluidized bed boiler comprises a charging basket and a crushing mechanism, wherein the charging basket is obliquely arranged, a first supporting leg, a feeding hole and a discharging hole are arranged on the charging basket, a filter screen is arranged in the discharging hole, the filter screen is obliquely arranged, and a material guide channel used for connecting the interior of the boiler is arranged at the discharging hole; the crushing mechanism comprises a rotating rod and a motor, wherein the rotating rod is rotatably connected to the inner wall of the charging basket, the motor is arranged on the charging basket, an output shaft of the motor is connected to the rotating rod, and a plurality of crushing blades are arranged on the rotating rod.

Through adopting above-mentioned technical scheme, after the coal cinder enters into the storage bucket from the feed inlet, the motor will drive broken leaf rotation through the dwang and smash the coal cinder, the coal cinder will roll downwards on the filter screen, and the little coal cinder after smashing will pass in filter screen and the guide passageway enters into the boiler, and the big coal cinder that is not smashed will stop on the filter screen to make the coal cinder that enters into in the boiler can fully burn, improved the utilization ratio of coal cinder.

Optionally, crushing mechanism still includes a plurality of brushes that connect in the dwang through the connecting rod, and the brush is rotatory to be contradicted in the inner wall and the filter screen of storage bucket.

Through adopting above-mentioned technical scheme, the motor will drive the rotatory brush of brush through dwang and connecting rod and remove the buggy that adheres to on the storage bucket inner wall and stop the coal cinder on the filter screen, has both realized the clearance to the buggy, makes the coal cinder on the filter screen again can be at the storage bucket internal rotation to broken leaf is broken with the coal cinder.

Optionally, a discharge port and an opening and closing mechanism for controlling the opening and closing of the discharge port are arranged at the lower end of the charging bucket.

Through adopting above-mentioned technical scheme, can't be discharged through the bin outlet by broken coal cinder for the filter screen is difficult for blockking up.

Optionally, the opening and closing mechanism includes an electric cylinder and a closing plate, a cylinder body and a piston rod of the electric cylinder are respectively rotatably connected to the charging basket and the closing plate, and the closing plate is rotatably connected to the charging basket.

Through adopting above-mentioned technical scheme, when the piston rod of electric jar is flexible, electric jar self will take place to rotate and make the closing plate rotatory for the closing plate can rotatory seal or break away from in bin outlet, convenient operation.

Optionally, the material collecting device further comprises a collecting mechanism, the collecting mechanism comprises a collecting barrel and a fan communicated with the inside of the collecting barrel, a filter disc is embedded in the collecting barrel, a trash discharging port is formed in the upper side of the material barrel, a connecting pipe communicated with the inside of the collecting barrel is arranged at the trash discharging port, and the fan and the connecting pipe are connected to one end of the collecting barrel and are respectively arranged on the upper side and the lower side of the filter disc.

Through adopting above-mentioned technical scheme, under the effect of fan, the buggy that the coal cinder produced when broken will enter into the collecting vessel through arranging miscellaneous mouthful and connecting pipe in, the air will pass the filter disc and discharge outside the collecting vessel through the fan, and the buggy will be attached to the lower surface of filter disc, has realized the collection to the buggy.

Optionally, an opening and a second supporting leg are arranged on the outer wall of the bottom of the collecting barrel, and a collecting box is inserted into the opening.

Through adopting above-mentioned technical scheme, pull down when the workman will collect the box and break away from behind the opening, can scrape into the collection box with the buggy that adheres to on filter disc lower surface to the reuse of buggy.

Optionally, rotate on collecting vessel and the filter disc and wear to be equipped with same pivot, the upper end of pivot is worn out outside the collecting vessel, and the lower extreme of pivot is equipped with the scraper blade of contradicting in the filter disc lower surface.

Through adopting above-mentioned technical scheme, the upper end of rotatory pivot can make the rotatory buggy that strikes off attached to the filter disc lower surface of scraper blade, has made things convenient for the buggy to fall into and has collected the box.

Optionally, an annular groove is formed in the outer wall of the collecting box, and a bolt inserted into the annular groove is matched with the upper thread of the collecting barrel in a threaded mode.

Through adopting above-mentioned technical scheme, the bolt can insert in the annular for it is difficult for rocking in the opening to collect the box, has guaranteed the stability of collecting the box when collecting the buggy.

To sum up, the application comprises the following beneficial technical effects:

1. due to the arrangement of the charging bucket and the crushing mechanism, the motor drives the crushing blades to rotate through the rotating rod to crush the coal briquettes, the coal briquettes roll downwards on the filter screen, the crushed small coal briquettes pass through the filter screen and the material guide channel to enter the boiler, and the large coal briquettes which are not crushed stay on the filter screen, so that the coal briquettes entering the boiler can be fully combusted, and the utilization rate of the coal briquettes is improved;

2. due to the arrangement of the brush, the coal dust is cleaned, and the coal blocks on the filter screen can rotate in the charging bucket, so that the crushing blades can crush the coal blocks;

3. the opening and closing mechanism is arranged, so that coal blocks which cannot be crushed can be discharged through the discharge port, and the filter screen is not easy to block;

4. the arrangement of the collecting mechanism enables pulverized coal generated by crushing coal blocks to enter the collecting barrel through the impurity discharging port and the connecting pipe, and the pulverized coal is collected in the collecting box so as to be recycled.

Drawings

Fig. 1 is a schematic sectional structure view of the whole in the embodiment of the present application.

Reference numerals: 1. a charging bucket; 11. a first leg; 12. a feed inlet; 13. a discharge port; 14. filtering with a screen; 15. a material guide channel; 16. a discharge outlet; 17. a trash discharge port; 2. a crushing mechanism; 21. a motor; 22. rotating the rod; 23. crushing the leaves; 24. a connecting rod; 25. a brush; 3. a collection mechanism; 31. a collection barrel; 311. mounting grooves; 312. an opening; 313. a second leg; 32. a fan; 33. a filter disc; 34. a connecting pipe; 35. a collection box; 351. a ring groove; 36. a bolt; 37. a rotating shaft; 38. a turntable; 39. a squeegee; 4. an opening and closing mechanism; 41. an electric cylinder; 42. and (3) closing the plate.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a feeding device for a circulating fluidized bed boiler. As shown in fig. 1, a feeding device for a circulating fluidized bed boiler comprises a charging basket 1, a crushing mechanism 2 and a collecting mechanism 3, wherein the crushing mechanism 2 can crush coal blocks in the charging basket 1, so that small coal blocks enter the boiler, the coal blocks can be sufficiently combusted, and the utilization rate of the coal blocks is improved; the collecting mechanism 3 can collect the coal powder generated when the coal briquette is crushed, so that the coal powder can be recycled, and the environment is effectively protected.

The bottom of storage bucket 1 is fixed with two first legs 11, and storage bucket 1 is the slope setting, and the high-end department of storage bucket 1 is equipped with feed inlet 12, and the downside of storage bucket 1 is equipped with discharge gate 13, and discharge gate 13 internal fixation inlays and is equipped with the filter screen 14 that is the slope setting, and discharge gate 13 department installs and is used for connecting the inside guide passageway 15 of boiler.

Crushing mechanism 2 is including rotating the dwang 22 of connecting in 1 inner wall of storage bucket and fixing the motor 21 on 1 outer wall of storage bucket, and the output shaft of motor 21 rotates and wears to locate storage bucket 1 and fixed connection in dwang 22, is fixed with a plurality of broken leaves 23 and a plurality of connecting rod 24 on the dwang 22, is fixed with brush 25 on the connecting rod 24.

The motor 21 drives the crushing blade 23 to rotate and crush the coal blocks in the charging basket 1 through the rotating rod 22, the coal blocks roll downwards on the filter screen 14, the crushed small coal blocks pass through the filter screen 14 and the material guide channel 15 and enter the boiler, and the large coal blocks which are not crushed stay on the filter screen 14, so that the coal blocks entering the boiler can be fully combusted; and dwang 22 will drive the rotatory brush 25 of brush through connecting rod 24 and brush the buggy that adheres to on storage bucket 1 inner wall and the coal cinder that stops on filter screen 14, realized the clearance to the buggy, and make the coal cinder on the filter screen 14 can be at storage bucket 1 internal rotation to broken leaf 23 is broken with the coal cinder.

The lower end of the charging basket 1 is provided with a discharge opening 16 and an opening and closing mechanism 4. The opening and closing mechanism 4 comprises an electric cylinder 41 and a closing plate 42, a cylinder body and a piston rod of the electric cylinder 41 are respectively and rotatably connected to the charging basket 1 and the closing plate 42, and the closing plate 42 is rotatably connected to the charging basket 1. When the piston rod of the electric cylinder 41 extends, the electric cylinder 41 rotates and causes the closing plate 42 to rotate, so that the closing plate 42 can be rotatably closed or separated from the discharge opening 16. When the discharge opening 16 is exposed, the coal pieces that cannot be crushed can be discharged through the discharge opening 16, so that the screen 14 is less likely to be clogged.

The collecting mechanism 3 comprises a collecting barrel 31, the outer wall of the collecting barrel 31 is provided with a mounting groove 311 communicated with the inside of the collecting barrel 31, the wall of the mounting groove 311 is fixed with a fan 32, and a filter disc 33 which is horizontally arranged is fixedly embedded in the collecting barrel 31; the upside of charging basket 1 is equipped with row's miscellaneous mouth 17, arranges miscellaneous mouth 17 department and installs the connecting pipe 34 that communicates in the inside of collecting vessel 31, and fan 32 and connecting pipe 34 are connected in the upper and lower both sides of filter disc 33 in the one end of collecting vessel 31 branch. Under the action of the fan 32, the pulverized coal generated during the coal block crushing and the pulverized coal brushed away by the brush 25 enter the collecting barrel 31 through the impurity discharging port 17 and the connecting pipe 34, air passes through the filter disc 33 and is discharged out of the collecting barrel 31 through the fan 32, and the pulverized coal is attached to the lower surface of the filter disc 33, so that the pulverized coal is collected.

An opening 312 and two second support legs 313 are arranged on the outer wall of the bottom of the collecting barrel 31, a collecting box 35 is inserted into the opening 312, and the box opening of the collecting box 35 faces upwards; the center department of collecting vessel 31 and filter disc 33 rotates and wears to be equipped with same root and is the pivot 37 of vertical setting, and the upper end of pivot 37 is worn out to collect vessel 31 outside and is fixed with carousel 38, and the lower extreme of pivot 37 is fixed with the scraper blade 39 of contradicting in the lower surface of filter disc 33, and scraper blade 39 is along the radial extension of filter disc 33. When the rotating shaft 37 is rotated by the rotating disc 38, the rotating shaft 37 drives the scraper 39 to rotate to scrape off the pulverized coal attached to the lower surface of the filter disc 33, so that the pulverized coal falls into the collecting box 35, and the collecting box 35 can slide out from the opening 312, so that the pulverized coal can be reused.

Annular groove 351 has been seted up on the outer wall of collection box 35, has seted up on the outer wall of collection barrel 31 and has been linked together in the inside thread groove of collection barrel 31, and thread groove female thread fit has bolt 36, and bolt 36 can rotate to twist in annular groove 351 for collection box 35 is fixed by the joint, has guaranteed the stability of collection box 35 when collecting the buggy.

The implementation principle of the feeding device for the circulating fluidized bed boiler is as follows: after the coal blocks enter the charging basket 1 from the feeding hole 12, the motor 21 drives the crushing blade 23 to rotate through the rotating rod 22 to crush the coal blocks in the charging basket 1, the coal blocks roll downwards on the filter screen 14, the crushed small coal blocks pass through the filter screen 14 and the material guide channel 15 to enter the boiler, and the large coal blocks which are not crushed stay on the filter screen 14, so that the coal blocks entering the boiler can be fully combusted, and the utilization rate of the coal blocks is improved; and dwang 22 will drive the rotatory brush 25 of brush through connecting rod 24 and brush the buggy that adheres to on storage bucket 1 inner wall and the coal cinder that stops on filter screen 14, realized the clearance to the buggy, and make the coal cinder on the filter screen 14 can be at storage bucket 1 internal rotation to broken leaf 23 is broken with the coal cinder.

The electric cylinder 41 can drive the closing plate 42 to rotate and separate from the discharge opening 16, so that the coal which cannot be crushed can be discharged through the discharge opening 16, and the filter screen 14 is not easy to be blocked by the coal.

Under the action of the fan 32, the pulverized coal generated during the coal block crushing and the pulverized coal brushed away by the brush 25 enter the collecting barrel 31 through the impurity discharging port 17 and the connecting pipe 34, air passes through the filter disc 33 and is discharged out of the collecting barrel 31 through the fan 32, and the pulverized coal is attached to the lower surface of the filter disc 33, so that the pulverized coal is collected. When the rotating shaft 37 is rotated by the rotating disc 38, the rotating shaft 37 drives the scraper 39 to rotate to scrape off the pulverized coal attached to the lower surface of the filter disc 33, so that the pulverized coal falls into the collecting box 35, and the collecting box 35 can slide out from the opening 312, so that the pulverized coal can be reused.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A feeding device for a circulating fluidized bed boiler, characterized in that: the boiler comprises a charging basket (1) and a crushing mechanism (2), wherein the charging basket (1) is obliquely arranged, a first supporting leg (11), a feeding hole (12) and a discharging hole (13) are arranged on the charging basket (1), a filter screen (14) is arranged in the discharging hole (13), the filter screen (14) is obliquely arranged, and a material guide channel (15) used for connecting the interior of the boiler is arranged at the discharging hole (13); crushing mechanism (2) including rotate connect in dwang (22) of storage bucket (1) inner wall with locate motor (21) on storage bucket (1), the output shaft of motor (21) is connected in dwang (22), is equipped with a plurality of crushing leaves (23) on dwang (22).

2. A feeding apparatus for a circulating fluidized bed boiler according to claim 1, characterized in that: crushing mechanism (2) still include a plurality of brush (25) of connecting in dwang (22) through connecting rod (24), and brush (25) are rotatory to be contradicted in inner wall and filter screen (14) of storage bucket (1).

3. A feeding apparatus for a circulating fluidized bed boiler according to claim 1, characterized in that: the low end of the charging bucket (1) is provided with a discharge outlet (16) and an opening and closing mechanism (4) for controlling the opening and closing of the discharge outlet (16).

4. A feeding apparatus for a circulating fluidized bed boiler according to claim 3, characterized in that: the opening and closing mechanism (4) comprises an electric cylinder (41) and a closing plate (42), a cylinder body and a piston rod of the electric cylinder (41) are respectively and rotatably connected to the charging bucket (1) and the closing plate (42), and the closing plate (42) is rotatably connected to the charging bucket (1).

5. A feeding apparatus for a circulating fluidized bed boiler according to claim 1, characterized in that: still including collecting mechanism (3), collecting mechanism (3) including collecting vessel (31) and fan (32) that communicate in collecting vessel (31) inside, the embedded filter disc (33) that is equipped with in collecting vessel (31), the upside of storage bucket (1) is equipped with row miscellaneous mouthful (17), arrange miscellaneous mouthful (17) and locate to be equipped with connecting pipe (34) that communicate in collecting vessel (31) inside, fan (32) and connecting pipe (34) are connected in the upper and lower both sides of locating filter disc (33) in the one end branch of collecting vessel (31).

6. A feeding arrangement for a circulating fluidized bed boiler according to claim 5, characterized in that: an opening (312) and a second supporting leg (313) are arranged on the outer wall of the bottom of the collecting barrel (31), and a collecting box (35) is inserted into the opening (312).

7. A feeding arrangement for a circulating fluidized bed boiler according to claim 6, characterized in that: same rotating shaft (37) is arranged on the collecting barrel (31) and the filter disc (33) in a penetrating mode in a rotating mode, the upper end of the rotating shaft (37) penetrates out of the collecting barrel (31), and the lower end of the rotating shaft (37) is provided with a scraper (39) which is abutted to the lower surface of the filter disc (33).

8. A feeding arrangement for a circulating fluidized bed boiler according to claim 6, characterized in that: annular groove (351) have been seted up on the outer wall of collection box (35), and screw-thread fit has bolt (36) that are used for pegging graft in annular groove (351) on collecting vessel (31).