Direct connection type coal feeder of circulating fluidized bed boiler

Abstract

The utility model discloses a circulating fluidized bed boiler direct connection type coal feeder which comprises a coal feeder and a boiler front coal bunker, a hollow bunker is arranged outside the coal feeder, a partition bunker is arranged inside the hollow bunker, an elastic filter screen is connected inside the partition bunker, an exhaust fan is installed inside the hollow bunker, and the exhaust fan is connected with the partition bunker. The exhaust fan is connected with an exhaust pipe and an exhaust pipe. The utility model relates to the field of coal feeders. Pulverized coal of the coal feeder can be mixed into air, a purifying agent enters the atomization spray head from the drainage pipe, then the purifying agent is atomized and sprayed out to complete purification and sterilization of the air, the sterilization effect is improved in cooperation with the ultraviolet lamp, the exhaust fan is started, polluted air is sucked in through the exhaust pipe, and the air is purified and sterilized. And then the air is discharged into the partition bin through the exhaust pipe, is filtered through the filter screen and is discharged through the exhaust port, so that the air around the coal feeder is favorably purified, and workers are prevented from directly inhaling the air and harming health.

Description

Technical Field

[0001] The utility model relates to the field of coal feeders, in particular to a direct-connected coal feeder for a circulating fluidized bed boiler. Background Art

[0002] The coal feeding of circulating fluidized bed boilers usually adopts belt coal feeders, screw coal feeders, scraper coal feeders, etc. No matter which coal feeder is used, the coal must enter the boiler through a coal drop pipe or chute.

[0003] The patent with application number CN207527574U is cited, which uses a direct-connected coal feeder for a circulating fluidized bed boiler, eliminates the coal drop pipe and chute, has a simple structure, eliminates the link that is prone to coal blockage, and uses an oblong sleeve and a three-dimensional sealing expansion joint to solve the expansion problem of the connection between the fixedly installed coal feeder and the boiler water-cooled wall.

[0004] However, when the coal feeder is in use, dust will enter the air and cause air pollution. The existing coal feeder cannot purify the air. Utility Model Content

[0005] The utility model aims to provide a circulating fluidized bed boiler direct-connected coal feeder to solve the problem that dust enters the air and causes air pollution when the coal feeder is in use and the existing coal feeder cannot purify the air.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a direct-connected coal feeder for a circulating fluidized bed boiler, comprising a coal feeder and a coal bin in front of a furnace, a hollow bin being arranged outside the coal feeder, a partition being arranged inside the hollow bin, an elastic filter being connected inside the partition, an exhaust fan being installed inside the hollow bin, and the exhaust fan being connected to an exhaust duct and an exhaust duct.

[0007] As a further solution of the utility model: a hollow column is fixed inside the partition, a first cylinder is installed on the top of the hollow column, an output end of the first cylinder is located inside the hollow column and is provided with an air pump for both vacuuming and exhausting, a vertical rod is provided at the bottom of the air pump, an air bag is provided outside the vertical rod, a pressure block is provided inside the hollow column, and the pressure block is provided with a vertical groove.

[0008] As a further solution of the utility model: the exhaust pipe extends out of the hollow bin on one side of the coal bin in front of the furnace, and the exhaust pipe extends to the interior of the partition bin, and the wind exhausted through the exhaust pipe will pass through the filter screen.

[0009] As a further solution of the utility model: the filter screen is an activated carbon filter screen, and a bin door is arranged on the front side of the hollow bin.

[0010] As a further solution of the utility model: an ultraviolet lamp is installed inside the coal feeder.

[0011] As a further solution of the utility model: an exhaust port is provided at the top of the hollow bin at the position of the partition.

[0012] As a further solution of the utility model: the vertical rod and the airbag can enter the interior of the vertical groove and cooperate with the vertical groove, and the air pump and the airbag are connected through a hollow tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The coal powder in the coal feeder will be mixed into the air. The purifier will enter the interior of the atomizing nozzle from the drain pipe, and then the purifier will be atomized and sprayed out to purify and sterilize the air. The ultraviolet lamp will be used to improve the sterilization effect. The exhaust fan will be started to draw the polluted air in through the exhaust pipe, and then discharged to the interior of the compartment through the exhaust pipe. After that, the air will be filtered through the filter and then discharged through the exhaust port, which is conducive to purifying the air around the coal feeder and preventing workers from directly inhaling and endangering their health.

[0015] 2. The output end of the first cylinder extends out to drive the air pump and the vertical rod, and then the vertical rod and the air bag enter the interior of the vertical slot. After that, the air pump discharges the gas into the interior of the air bag through the hollow tube to make it expand. At this time, the air bag fills the vertical slot, which is conducive to completing the connection between the vertical rod and the pressure block. After that, the output end of the first cylinder retracts to drive the pressure block to rise, and then the air pump extracts the gas in the air bag. At this time, the air bag becomes smaller and the pressure block falls and hits the filter. Since the filter is elastic, the impurities that block the mesh will be ejected, which is conducive to preventing the filter from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0017] Figure 2 This is a structural diagram of a hollow bin of the utility model;

[0018] Figure 3 This is the internal structure diagram of the hollow column of the utility model;

[0019] Figure 4 This is a diagram showing the internal structure of the water tank of the present utility model.

[0020] In the figure: 1. coal feeder; 2. coal bunker in front of furnace; 3. hollow bunker; 4. partition; 5. filter; 6. exhaust fan; 7. exhaust pipe; 8. exhaust pipe; 9. hollow column; 10. first cylinder; 11. air pump; 12. vertical rod; 13. air bag; 14. pressure block; 15. vertical groove; 16. ultraviolet lamp; 17. water tank; 18. slide; 19. support plate; 20. stirring wheel; 21. second cylinder; 22. rack; 23. rectangular bunker; 24. pressure plate; 25. spring; 26. feeding pipe; 27. atomizing nozzle; 28. bending plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 to Figure 4 In the embodiment of the utility model, a direct-connected coal feeder for a circulating fluidized bed boiler comprises a coal feeder 1 and a coal bunker 2 in front of a furnace. An ultraviolet lamp 16 is installed inside the coal feeder 1. A hollow bunker 3 is arranged outside the coal feeder 1. An exhaust port is arranged on the top of the hollow bunker 3. A partition 4 is arranged inside the hollow bunker 3. An elastic filter 5 is connected to the interior of the partition 4. An exhaust fan 6 is installed inside the hollow bunker 3. The exhaust fan 6 is connected to an exhaust pipe 7 and an exhaust pipe 8. The exhaust pipe 7 extends out of the hollow bunker 3 and is located on one side of the coal bunker 2 in front of the furnace. The exhaust pipe 8 extends to the interior of the partition 4. The wind discharged through the exhaust pipe 8 will pass through the filter. 5. The filter screen 5 is an activated carbon filter screen. A door is provided on the front of the hollow bin 3. A hollow column 9 is fixed inside the compartment 4. A first cylinder 10 is installed on the top of the hollow column 9. The output end of the first cylinder 10 is located inside the hollow column 9 and is provided with an air pump 11 for both air extraction and exhaust. A vertical rod 12 is provided at the bottom of the air pump 11. An air bag 13 is provided outside the vertical rod 12. The vertical rod 12 and the air bag 13 can enter the interior of the vertical groove 15 and cooperate with the vertical groove 15. The air pump 11 and the air bag 13 are connected through a hollow tube. A pressing block 14 is provided inside the hollow column 9. The pressing block 14 is provided with a vertical groove 15.

[0023] In this embodiment, the coal powder in the coal feeder 1 will be mixed with the air. At this time, the exhaust fan 6 is started to draw the polluted air in through the exhaust pipe 7, and then discharged to the inside of the compartment 4 through the exhaust pipe 8. After that, the air is filtered through the filter 5 and then discharged through the exhaust port, which is conducive to purifying the air around the coal feeder 1 and preventing workers from directly inhaling and endangering their health. The filter 5 needs to be cleaned regularly. At this time, the output end of the first cylinder 10 extends to drive the air pump 11 and the vertical rod 12, and then the vertical rod 12 and the air bag 13 enter the vertical slot 1 5, and then the air pump 11 discharges the gas into the airbag 13 through the hollow tube to make it expand. At this time, the airbag 13 fills the vertical slot 15, which is conducive to completing the connection between the vertical rod 12 and the pressure block 14. Then the output end of the first cylinder 10 retracts to drive the pressure block 14 to rise, and then the air pump 11 extracts the gas in the airbag 13. At this time, the airbag 13 becomes smaller and the pressure block 14 falls and hits the filter 5. Since the filter 5 is elastic, the impurities that block the mesh will be ejected, which is conducive to preventing the filter 5 from being blocked.

[0024] See also Figure 1 to Figure 4 A water tank 17 is arranged outside the hollow tank 3, and a water inlet and a drain are arranged at the top and the bottom of the water tank 17, respectively. A bent plate 28 is fixed inside the water tank 17 and a slide 18 is arranged thereon. A support plate 19 is slidably connected to the inside of the water tank 17 along the slide 18, and a stirring wheel 20 with teeth is rotatably connected to the support plate 19. A second cylinder 21 is installed outside the water tank 17, and an output end of the second cylinder 21 is fixedly connected to the support plate 19. A rack 22 is slidably connected to the front of the support plate 19. 22 meshes with the teeth on the outside of the stirring wheel 20, a rectangular bin 23 is fixed to the bottom of the support plate 19, a pressing plate 24 is fixed to the bottom of the rack 22 located at the inner wall of the rectangular bin 23, a spring 25 is fixed to the top of the pressing plate 24, and the top of the spring 25 is fixedly connected to the rectangular bin 23, a feeding pipe 26 is connected to one side of the rectangular bin 23, a discharge port is provided at the bottom of the rectangular bin 23, an atomizing nozzle 27 is installed inside the hollow bin 3, and a drain pipe connected to the atomizing nozzle 27 is provided at the bottom of the rectangular bin 23,

[0025] In this embodiment, water and flocculant particles are injected into the water tank 17 from the water inlet, and the agglomerated flocculant can be injected into the rectangular tank 23 from the feeding pipe 26. The output end of the second cylinder 21 extends to drive the support plate 19 to move. When the support plate 19 moves, the rack 22 is pressed by the bent plate 28 and then descends. When the rack 22 descends, it drives the stirring wheel 20 to rotate and stir the water under the action of the teeth, which is conducive to quickly dissolving the flocculant particles in the water. At the same time, the rack 22 descends and drives the pressing plate 24 to descend. The pressing plate 24 breaks the agglomerated flocculant particles and discharges them from the discharge port. This is conducive to breaking the agglomerated flocculant to reduce its volume and quickly dissolve it in water. The spring 25 is conducive to the reset of the rack 22. The flocculant is dissolved in the water to form a purifier, and then the purifier enters the interior of the atomizing nozzle 27 from the drain pipe. Thereafter, the purifier is atomized and sprayed out to purify and sterilize the air, and then cooperates with the ultraviolet lamp 16 to further improve the sterilization effect.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circulating fluidized bed boiler direct-connected coal feeder, comprising a coal feeder (1) and a coal bunker (2) in front of the boiler, characterized in that: The coal feeder (1) is provided with a hollow bin (3) outside, the hollow bin (3) is provided with a partition bin (4) inside, the partition bin (4) is connected to an elastic filter net (5), the hollow bin (3) is provided with an exhaust fan (6), and the exhaust fan (6) is connected to an exhaust pipe (7) and an exhaust pipe (8).

2. A circulating fluidized bed boiler direct-connected coal feeder according to claim 1, characterized in that: A hollow column (9) is fixed inside the compartment (4), a first cylinder (10) is installed on the top of the hollow column (9), an output end of the first cylinder (10) is located inside the hollow column (9) and is provided with an air pump (11) for both air suction and exhaust, a vertical rod (12) is provided at the bottom of the air pump (11), an air bag (13) is provided outside the vertical rod (12), a pressure block (14) is provided inside the hollow column (9), and the pressure block (14) is provided with a vertical groove (15).

3. The direct-connected coal feeder for a circulating fluidized bed boiler according to claim 1, characterized in that: The exhaust pipe (7) extends out of the hollow bin (3) and is located on one side of the coal bin (2) in front of the furnace. The exhaust pipe (8) extends to the interior of the partition bin (4). The air discharged through the exhaust pipe (8) passes through the filter screen (5).

4. The circulating fluidized bed boiler direct-connected coal feeder according to claim 1, characterized in that: The filter screen (5) is an activated carbon filter screen, and a bin door is provided on the front of the hollow bin (3).

5. The direct-connected coal feeder for a circulating fluidized bed boiler according to claim 1, characterized in that: An ultraviolet lamp (16) is installed inside the coal feeder (1).

6. The circulating fluidized bed boiler direct-connected coal feeder according to claim 1, characterized in that: An exhaust port is provided at the top of the hollow chamber (3) at the position of the partition chamber (4).

7. The direct-connected coal feeder for a circulating fluidized bed boiler according to claim 2, characterized in that: The vertical rod (12) and the air bag (13) can enter the interior of the vertical groove (15) and cooperate with the vertical groove (15), and the air pump (11) and the air bag (13) are connected through a hollow tube.

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