Desulfurization and denitrification flue gas treatment device

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a desulfurization and denitrification flue gas treatment device which comprises a spraying tank, a filter screen is fixedly mounted on the inner wall of the spraying tank, a gear motor is fixedly mounted on the outer surface of the spraying tank, and the output end of the gear motor is fixedly connected with a first rotating shaft. One end of the first rotating shaft is fixedly connected with a first bevel gear, and the outer surface of the first bevel gear is engaged with two second bevel gears. The desulfurization and denitrification agent stirring device has the advantages that through the matched arrangement of the speed reducing motor, the first rotating shaft, the first bevel gear, the second bevel gear, the second rotating shaft, the third rotating shaft, the spiral stirring paddle, the turbulent flow fan blades and the cleaning brush plate, the desulfurization and denitrification agent in the spraying tank can be subjected to turbulent flow stirring, and meanwhile, the filter screen can be cleaned; therefore, the operation of cleaning the filter screen is simple and convenient, the filter screen can be cleaned without opening the spraying tank, and the effect of improving the filter screen cleaning efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a desulfurization and denitrification flue gas treatment device. Background Art

[0002] In today's social production, coal-fired boilers are widely used. Coal-fired boilers will produce a lot of smoke when working, and the dust, sulfur and nitrogen oxides of the smoke are all substances that pollute the atmosphere. Therefore, the smoke pollution problem of coal-fired boilers has always troubled people. With the development of the economy, the requirements for environmental protection are getting higher and higher, and the smoke pollution problem of coal-fired boilers is becoming increasingly prominent. For a long time, people have also proposed many technologies and products to solve this problem, among which desulfurization and denitrification flue gas treatment device is one of them.

[0003] A dust removal, desulfurization and denitrification device for boiler flue gas is disclosed in a patent document with publication number CN220328317U. The dust removal, desulfurization and denitrification device for boiler flue gas uses a filter to filter dust in the flue gas, thereby preventing dust from being discharged into the atmosphere. However, after long-term use, a large amount of dust will accumulate on the filter. In severe cases, the filter may even be blocked, thereby affecting the normal filtering operation of the filter. Cleaning the filter requires opening a spray tank, which makes the operation of cleaning the spray tank more troublesome and reduces the efficiency of cleaning the filter. Therefore, a desulfurization and denitrification flue gas treatment device is needed to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] To this end, one purpose of the utility model is to propose a desulfurization and denitrification flue gas treatment device to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned objectives, an embodiment of one aspect of the utility model provides a desulfurization and denitrification flue gas treatment device, including a spray tank, a filter screen is fixedly installed on the inner wall of the spray tank, a reduction motor is fixedly installed on the outer surface of the spray tank, the output end of the reduction motor is fixedly connected to a first rotating shaft, one end of the first rotating shaft is fixedly connected to a first bevel gear, the outer surface of the first bevel gear is meshed with two second bevel gears, the inner wall of the keyway of one of the second bevel gears is fixedly connected to the second rotating shaft, and the inner wall of the keyway of the other second bevel gear is fixedly connected to a third rotating shaft, the outer surface of the second rotating shaft is fixedly connected to a spiral stirring paddle, the outer surface of the third rotating shaft is fixedly connected to a spoiler blade, the bottom end of the spray tank is fixedly connected to a drain pipe, the outer surface of the third rotating shaft is fixedly connected to a cleaning brush plate, the inner wall of the spray tank is fixedly connected to a support plate, one end of the support plate is fixedly connected to a protective box, the bottom end of the drain pipe is connected to a filter box structure, and the filter box structure is connected to a flue gas treatment structure.

[0007] Preferably, any of the above schemes comprises a filter box, a slot, a filter screen, a cover plate and a handle, a plurality of slots are provided on the top side of the filter box, a plurality of filter screens are inserted into the inner walls of the slots, a plurality of filter screens are fixedly connected to the top sides of the cover plates, and a plurality of handles are fixedly connected to the top sides of the cover plates.

[0008] Preferably, the flue gas treatment structure includes a first delivery pump, a water tank, a second delivery pump, a delivery pipe, an annular pipe and a nozzle, one side of the protection box is fixedly connected to the first delivery pump through a pipe, the water outlet of the first delivery pump is fixedly connected to the water tank through a pipe, the top side of the water tank is fixedly connected to the second delivery pump through a pipe, the water outlet of the second delivery pump is fixedly connected to the delivery pipe, the top end of the delivery pipe is fixedly connected to the annular pipe, the outer surface of the annular pipe is fixedly connected to a plurality of nozzles, and the annular pipe is located inside the spray tank.

[0009] Preferably, any of the above schemes has a through hole in the middle of one side of the filter screen, the third rotating shaft passes through the through hole, and the diameter of the third rotating shaft is smaller than the diameter of the through hole.

[0010] Preferably, any of the above schemes is that the first bevel gear and the second bevel gear are both located inside the protective box, the first rotating shaft is rotatably connected to the protective box via a bearing, the second rotating shaft and the third rotating shaft both pass through one side of the protective box and extend to the outside of the protective box, the second rotating shaft is rotatably connected to the protective box via a bearing, and the third rotating shaft is rotatably connected to the protective box via a bearing.

[0011] Preferably, any of the above schemes is that the cleaning brush plate is located below the filter screen, and the bristles of the cleaning brush plate are in contact with the filter screen.

[0012] Preferably, any of the above schemes is that the size of the filter screen is adapted to the size of the slot, and the size of the cover plate is larger than the size of the filter screen.

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

[0014] 1. Through the coordinated arrangement of the reduction motor, the first rotating shaft, the first bevel gear, the second bevel gear, the second rotating shaft, the third rotating shaft, the spiral stirring paddle, the turbulent fan blades and the cleaning brush plate, the filter can be cleaned while the desulfurization and denitrification agent inside the spray tank is turbulently stirred, thereby making the operation of cleaning the filter simpler, and there is no need to open the spray tank to clean the filter, thereby achieving the effect of improving the efficiency of cleaning the filter.

[0015] 2. Through the coordinated arrangement of the drain pipe, filter box, slot, filter net, cover plate and handle, the desulfurization and denitrification agent after spraying can be filtered, and the installation and removal of the filter net is relatively simple, which is convenient for cleaning the filter net. Through the coordinated arrangement with the first delivery pump, water tank, second delivery pump, delivery pipe, annular pipe and nozzle, the filtered desulfurization and denitrification agent can re-enter the interior of the spray tank and desulfurize and denitrify the flue gas, thereby saving the use of the desulfurization and denitrification agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model without a spray tank;

[0019] Figure 4 This is a schematic diagram of the structure of the protective box and its connecting components of the utility model;

[0020] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1-spray tank, 2-filter screen, 3-reduction motor, 4-first rotating shaft, 5-first bevel gear, 6-second bevel gear, 7-second rotating shaft, 8-third rotating shaft, 9-spiral stirring paddle, 10-turbulator blade, 11-drain pipe, 12-cleaning brush plate, 13-protection box, 14-filter box structure, 1401-filter box, 1402-slot, 1403-filter screen, 1404-cover plate, 1405-handle, 15-smoke treatment structure, 1501-first delivery pump, 1502-water tank, 1503-second delivery pump, 1504-delivery pipe, 1505-annular pipe, 1506-sprinkler, 16-perforation. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0023] like Figures 1 to 5As shown, a desulfurization and denitrification flue gas treatment device comprises a spray tank 1, a filter screen 2 is fixedly installed on the inner wall of the spray tank 1, an air intake pipe is fixedly connected to one side of the spray tank 1, and the air intake pipe is located below the filter screen 2. An exhaust port is arranged on the top of the spray tank 1 to facilitate the discharge of the gas inside the spray tank 1 to the outside. A reduction motor 3 is fixedly installed on the outer surface of the spray tank 1, and a first rotating shaft 4 is fixedly connected to the output end of the reduction motor 3. The first rotating shaft 4 passes through one side of the spray tank 1 and extends to the inside of the spray tank 1. The first rotating shaft 4 passes through The bearing is rotatably connected to the spray tank 1, one end of the first rotating shaft 4 is fixedly connected to the first bevel gear 5, the outer surface of the first bevel gear 5 is meshed with two second bevel gears 6, the inner wall of the keyway of one second bevel gear 6 is fixedly connected to the second rotating shaft 7, the inner wall of the keyway of the other second bevel gear 6 is fixedly connected to the third rotating shaft 8, the outer surface of the second rotating shaft 7 is fixedly connected to a spiral stirring paddle 9, the outer surface of the third rotating shaft 8 is fixedly connected to a spoiler blade 10, the bottom end of the spray tank 1 is fixedly connected to a drain pipe 11, the outer surface of the third rotating shaft 8 is fixedly connected to the drain pipe 11, and the outer surface of the third rotating shaft 8 is fixedly connected to the drain pipe 11. A cleaning brush plate 12 is fixedly connected to the inner wall of the spray tank 1, a support plate is fixedly connected to one end of the support plate, a protection box 13 is fixedly connected to the bottom end of the drain pipe 11, and a filter box structure 14 is connected to the filter box structure 14. The flue gas treatment structure 15 is connected. When the flue gas is subjected to desulfurization and denitrification treatment operations, the reduction motor 3 is started to rotate the first rotating shaft 4. At this time, the second rotating shaft 7 and the third rotating shaft 8 are rotated under the transmission action of the first bevel gear 5 and the second bevel gear 6. At this time, the spoiler blades 10 will rotate and stir the flue gas. The flue gas is fully in contact with the desulfurization and denitrification agent, so that the desulfurization and denitrification effect of the flue gas is better. With the rotation of the second rotating shaft 7, the spiral stirring paddle 9 will rotate and stir the desulfurization and denitrification agent at the bottom of the spray tank 1. With the rotation of the third rotating shaft 8, the cleaning brush plate 12 will rotate and sweep the dust on the filter screen 2. The cleaned dust will fall on the bottom of the spray tank 1. With the rotation of the spiral stirring paddle 9, the dust and the desulfurization and denitrification agent can be evenly mixed, thereby avoiding the dust staying inside the spray tank 1.

[0024] As an optional technical solution of the present utility model, the filter box structure 14 includes a filter box 1401, a slot 1402, a filter screen 1403, a cover plate 1404 and a handle 1405. A plurality of slots 1402 are provided on the top side of the filter box 1401, and the inner walls of the plurality of slots 1402 are plugged with filter screens 1403. The top sides of the plurality of filter screens 1403 are fixedly connected with cover plates 1404. The cover plates 1404 are fixedly installed on the top side of the filter box 1401 by bolts, and the top sides of the plurality of cover plates 1404 are fixedly connected with handles 1405. When the drain pipe 11 discharges the desulfurization and denitrification agent containing impurities into the interior of the filter box 1401, the impurities in the desulfurization and denitrification agent can be filtered through the plurality of filter screens 1403, and after a period of time, the cover plate 1404 is used to drive the filter screen 1403 to be moved out of the interior of the filter box 1401 through the handle 1405, thereby facilitating the cleaning of the filter screen 1403.

[0025] As an optional technical solution of the utility model, the flue gas treatment structure 15 includes a first delivery pump 1501, a water tank 1502, a second delivery pump 1503, a delivery pipe 1504, an annular pipe 1505 and a nozzle 1506. One side of the protective box 13 is fixedly connected to the first delivery pump 1501 through a pipeline, the water outlet of the first delivery pump 1501 is fixedly connected to the water tank 1502 through a pipeline, a desulfurization and denitrification agent is arranged inside the water tank 1502, and a water filling pipe is arranged on the water tank 1502. The top side of the water tank 1502 is fixedly connected to the second delivery pump 1503 through a pipeline, the water outlet of the second delivery pump 1503 is fixedly connected to the delivery pipe 1504, and the top of the delivery pipe 1504 An annular pipe 1505 is fixedly connected, and a plurality of nozzles 1506 are fixedly connected to the outer surface of the annular pipe 1505. The annular pipe 1505 is located inside the spray tank 1. After the desulfurization and denitrification agent is filtered, the first delivery pump 1501 and the second delivery pump 1503 are started. With the start of the first delivery pump 1501, the desulfurization and denitrification agent located inside the filter box 1401 is transported to the inside of the water tank 1502. With the start of the second delivery pump 1503, the desulfurization and denitrification agent filtered inside the water tank 1502 can be transported to the inside of the annular pipe 1502 under the action of the delivery pipe 1504, and then sprayed out through a plurality of nozzles 1506, thereby continuing the desulfurization and denitrification operation on the flue gas.

[0026] As an optional technical solution of the present invention, a through hole 16 is opened in the middle of one side of the filter screen 2, and the third rotating shaft 8 passes through the inside of the through hole 16. The diameter of the third rotating shaft 8 is smaller than the diameter of the through hole 16, so that the third rotating shaft 8 can rotate smoothly.

[0027] As an optional technical solution of the utility model, the first bevel gear 5 and the second bevel gear 6 are both located inside the protective box 13, the first rotating shaft 4 is rotatably connected to the protective box 13 through a bearing, the second rotating shaft 7 and the third rotating shaft 8 both pass through one side of the protective box 13 and extend to the outside of the protective box 13, the second rotating shaft 7 is rotatably connected to the protective box 13 through a bearing, and the third rotating shaft 8 is rotatably connected to the protective box 13 through a bearing, which supports the second rotating shaft 7 and the third rotating shaft 8 and ensures the stability of the second rotating shaft 7 and the third rotating shaft 8 during rotation.

[0028] As an optional technical solution of the present invention, the cleaning brush plate 12 is located below the filter screen 2 , and the bristles of the cleaning brush plate 12 are in contact with the filter screen 2 , so that the cleaning brush plate 12 can better clean the filter screen 2 .

[0029] As an optional technical solution of the present invention, the size of the filter 1403 is adapted to that of the slot 1402 , the size of the cover 1404 is larger than that of the filter 1403 , and the slot 1402 is shielded and sealed by the cover 1404 .

[0030] A desulfurization and denitrification flue gas treatment device, the working principle is as follows:

[0031] When the flue gas is subjected to desulfurization and denitrification treatment, the reduction motor 3 is started to rotate the first rotating shaft 4. At this time, the second rotating shaft 7 and the third rotating shaft 8 are rotated under the transmission action of the first bevel gear 5 and the second bevel gear 6. At this time, the turbulent fan blades 10 will rotate and stir the flue gas to make the flue gas fully contact with the desulfurization and denitrification agent, so that the desulfurization and denitrification effect of the flue gas is better. With the rotation of the second rotating shaft 7, the spiral stirring paddle 9 will rotate and stir the desulfurization and denitrification agent at the bottom of the spray tank 1. With the rotation of the third rotating shaft 8, the cleaning brush plate 12 will rotate and clean the dust on the filter screen 2. The cleaned dust will It will fall to the bottom of the spray tank 1, and with the rotation of the spiral stirring paddle 9, the dust and the desulfurization and denitrification agent can be evenly mixed, and at this time the first delivery pump 1501 and the second delivery pump 1503 are started. With the start of the first delivery pump 1501, the desulfurization and denitrification agent located inside the filter box 1401 is transported to the inside of the water tank 1502, and with the start of the second delivery pump 1503, the desulfurization and denitrification agent filtered inside the water tank 1502 can be transported to the inside of the annular pipe 1502 under the action of the delivery pipe 1504, and then sprayed out through a number of nozzles 1506, so as to continue the desulfurization and denitrification operation on the flue gas.

[0032] In summary, the desulfurization and denitrification flue gas treatment device, through the coordinated arrangement of the reduction motor 3, the first shaft 4, the first bevel gear 5, the second bevel gear 6, the second shaft 7, the third shaft 8, the spiral stirring paddle 9, the turbulent fan blade 10 and the cleaning brush plate 12, can perform a cleaning operation on the filter 2 while turbulently stirring the desulfurization and denitrification agent located inside the spray tank 1, thereby making the operation of cleaning the filter 2 simpler, and there is no need to open the spray tank 1 to clean the filter 2, thereby achieving the effect of improving the efficiency of cleaning the filter 2, and through the drain pipe 11, the filter box 1401, the slot 1402, the filter 1 403, the cover plate 1404 and the handle 1405 are arranged in coordination, so that the desulfurization and denitrification agent after spraying can be filtered and processed, and the installation and removal of the filter 1403 can be simplified, and the filter 1403 can be cleaned conveniently. In addition, by coordinating with the first delivery pump 1501, the water tank 1502, the second delivery pump 1503, the delivery pipe 1504, the annular pipe 1505 and the nozzle 1506, the filtered desulfurization and denitrification agent can be re-entered into the interior of the spray tank 1 and the flue gas can be desulfurized and denitrified, thereby saving the usage of the desulfurization and denitrification agent.

Claims

1. A desulfurization and denitrification flue gas treatment device, characterized in that: The spray tank (1) comprises a spray tank (1), a filter screen (2) is fixedly mounted on the inner wall of the spray tank (1), a reduction motor (3) is fixedly mounted on the outer surface of the spray tank (1), an output end of the reduction motor (3) is fixedly connected to a first rotating shaft (4), one end of the first rotating shaft (4) is fixedly connected to a first bevel gear (5), the outer surface of the first bevel gear (5) is meshed with two second bevel gears (6), the inner wall of a keyway of one of the second bevel gears (6) is fixedly connected to a second rotating shaft (7), and the inner wall of a keyway of another second bevel gear (6) is fixedly connected to a third rotating shaft (8). The outer surface of the second rotating shaft (7) is fixedly connected with a spiral stirring paddle (9), the outer surface of the third rotating shaft (8) is fixedly connected with a turbulent fan blade (10), the bottom end of the spray tank (1) is fixedly connected with a drain pipe (11), the outer surface of the third rotating shaft (8) is fixedly connected with a cleaning brush plate (12), the inner wall of the spray tank (1) is fixedly connected with a support plate, one end of the support plate is fixedly connected with a protective box (13), the bottom end of the drain pipe (11) is connected with a filter box structure (14), and the filter box structure (14) is connected with a flue gas treatment structure (15).

2. A desulfurization and denitrification flue gas treatment device according to claim 1, characterized in that: The filter box structure (14) comprises a filter box (1401), a slot (1402), a filter screen (1403), a cover plate (1404) and a handle (1405); a plurality of slots (1402) are provided on the top side of the filter box (1401); filter screens (1403) are inserted into the inner walls of a plurality of the slots (1402); a plurality of cover plates (1404) are fixedly connected to the top sides of a plurality of the filter screens (1403); and a plurality of handles (1405) are fixedly connected to the top sides of a plurality of the cover plates (1404).

3. A desulfurization and denitrification flue gas treatment device according to claim 2, characterized in that: The flue gas treatment structure (15) comprises a first delivery pump (1501), a water tank (1502), a second delivery pump (1503), a delivery pipe (1504), an annular pipe (1505) and a nozzle (1506); one side of the protection box (13) is fixedly connected to the first delivery pump (1501) via a pipeline; the water outlet of the first delivery pump (1501) is fixedly connected to the water tank (1502) via a pipeline; the top side of the water tank (1502) is fixedly connected to the second delivery pump (1503) via a pipeline; the water outlet of the second delivery pump (1503) is fixedly connected to the delivery pipe (1504); the top end of the delivery pipe (1504) is fixedly connected to the annular pipe (1505); the outer surface of the annular pipe (1505) is fixedly connected to a plurality of nozzles (1506); and the annular pipe (1505) is located inside the spray tank (1).

4. A desulfurization and denitrification flue gas treatment device according to claim 3, characterized in that: A through hole (16) is provided in the middle of one side of the filter screen (2), and the third rotating shaft (8) passes through the inside of the through hole (16). The diameter of the third rotating shaft (8) is smaller than the diameter of the through hole (16).

5. A desulfurization and denitrification flue gas treatment device according to claim 4, characterized in that: The first bevel gear (5) and the second bevel gear (6) are both located inside the protective box (13); the first rotating shaft (4) is rotatably connected to the protective box (13) via a bearing; the second rotating shaft (7) and the third rotating shaft (8) both pass through one side of the protective box (13) and extend to the outside of the protective box (13); the second rotating shaft (7) is rotatably connected to the protective box (13) via a bearing; and the third rotating shaft (8) is rotatably connected to the protective box (13) via a bearing.

6. A desulfurization and denitrification flue gas treatment device according to claim 5, characterized in that: The cleaning brush plate (12) is located below the filter screen (2), and the bristles of the cleaning brush plate (12) are in contact with the filter screen (2).

7. A desulfurization and denitrification flue gas treatment device according to claim 6, characterized in that: The size of the filter screen (1403) is adapted to the size of the slot (1402), and the size of the cover plate (1404) is larger than the size of the filter screen (1403).

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