Denitration agent distributing and spraying device for flue gas denitrification

Abstract

The utility model belongs to the technical field of flue gas denitration, and particularly relates to a denitration agent distributing and spraying device for flue gas denitration, which comprises a main plate, connecting plates are arranged on the left side and the right side of the front surface of the main plate, a positioning plate is fixedly arranged between the two connecting plates, and a plurality of movable grooves are formed in the positioning plate. And a fixed pipe is rotationally installed in the movable groove, a spray head is fixedly installed at the front end of the fixed pipe, and an angle adjusting mechanism is installed on the upper surface of the positioning plate and used for adjusting the rotating angle of the spray head. When the concentration of nitrogen oxides in multiple different areas is inconsistent, the rotating motor operates to drive the nozzle to rapidly swing back and forth so as to ensure that the concentration of nitrogen oxides in different areas can be treated, and when only one area with high nitrogen oxide concentration exists, the nozzle rotates to spray the area with high concentration.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas denitrification technology, specifically relating to a denitrification agent distribution and injection device for flue gas denitrification. Background Technology

[0002] A flue gas denitrification injection device is a specialized piece of equipment used in flue gas denitrification systems. Its main function is to distribute the denitrifying agent to various injection points according to a specific ratio and flow rate, and then uniformly inject the agent into the flue gas through the injection device. This allows the agent to fully mix and react with the nitrogen oxides in the flue gas, thereby reducing nitrogen oxide emissions. During the flue gas denitrification process, the performance and accuracy of the denitrifying agent distribution injection device have a significant impact on the denitrification efficiency.

[0003] Existing flue gas denitrification technologies often rely solely on multiple spray heads to evenly distribute the denitrifying agent into the flue gas. While increasing the number of spray heads can achieve some distribution of the denitrifying agent, the significant differences in nitrogen oxide concentrations in different areas of the flue gas under actual operating conditions mean that existing nitrogen oxide injection devices lack adjustment capabilities. They cannot flexibly adjust according to the actual concentration of nitrogen oxides in the flue gas, leading to low denitrification efficiency and wasted resources. Furthermore, most injection devices use a fixed spraying method, and the nozzles lack oscillation capabilities. After detecting changes in the flue gas flow field, they cannot accurately locate the nozzles based on these changes, further limiting the improvement of denitrification performance. Utility Model Content

[0004] This invention provides a denitrification agent distribution and injection device for flue gas denitrification to address the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A denitrification agent dispensing and injection device for flue gas denitrification includes a main board, connecting plates on both the left and right sides of the front surface of the main board, a positioning plate fixedly disposed between the two connecting plates, multiple movable slots on the positioning plate, a fixed tube rotatably installed in the movable slots, a nozzle fixedly installed at the front end of the fixed tube, an angle adjustment mechanism installed on the upper surface of the positioning plate for adjusting the rotation angle of the nozzle, and the rear end of the fixed tube connected to a flow port on the main board via a flexible hose, the flow port communicating with a diversion mechanism located on the rear side of the main board.

[0007] Furthermore, the angle adjustment mechanism includes a motor bracket fixedly mounted on the upper surface of the positioning plate. A rotating motor is fixedly mounted on the upper surface of the motor bracket. The output shaft of the rotating motor passes through the motor bracket and is fixedly connected to a drive gear. The drive gear meshes with a rack. The rack is slidably mounted on the positioning plate. The rack meshes with multiple driven gears. The driven gears are fixedly connected to a rotating shaft. The lower end of the rotating shaft is fixedly connected to a fixed tube, and the rotating shaft is rotatably connected to the positioning plate.

[0008] Furthermore, multiple inverted L-shaped plates are provided on the upper surface of the positioning plate. The L-shaped plates are located on the planar side of the rack, and the rack is limited by the cooperation between the L-shaped plates and the driven gear.

[0009] Furthermore, the diversion mechanism includes a diversion box fixedly installed on the rear side of the motherboard, a diversion groove is provided in the diversion box, the flow port is connected to the diversion groove, and a main water inlet pipe is fixedly connected to the rear side of the diversion box.

[0010] Furthermore, a dual-output shaft motor is fixedly installed in the middle of the upper surface of the diversion box. Threaded rods are fixedly connected to both output shafts of the dual-output shaft motor. The threaded rods are rotatably connected to the first support plate and threadedly connected to the second support plate. The first support plate is fixedly installed on the upper surface of the diversion box, and the second support plate is fixedly installed on the upper surface of the baffle. The inner end of the baffle extends into the diversion groove through a through hole on the end face of the sealing box. The baffle is sealed to the through hole, and the front side of the baffle is in sealing contact with the main board to achieve a seal on the flow port.

[0011] Furthermore, a baffle plate is connected to the inner end of the baffle plate by a fixing rod. The distance between the baffle plate and the baffle plate is equal to twice the distance between two adjacent flow ports. The baffle plate is in sealed contact with the main board.

[0012] Furthermore, connection holes are provided at all four corners of the motherboard.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention utilizes a rotating motor to drive a drive gear, which in turn moves a rack, which in turn moves a driven gear, which in turn rotates a shaft and a fixed pipe, causing the nozzle to oscillate. This allows the nozzle to adjust its angle according to changes in the flue gas flow field, further enhancing the denitrification effect. The nozzle targets areas with higher concentrations, ensuring the effective use of the denitrification agent. When multiple areas have inconsistent nitrogen oxide concentrations, the rotating motor drives the nozzle to oscillate rapidly back and forth to ensure that different areas can be treated for nitrogen oxide concentrations. When only a single area has a high nitrogen oxide concentration, the nozzle rotates to spray that area.

[0015] In this invention, the dual-output shaft motor drives the threaded rods on both sides to rotate. The rotation of the threaded rods causes the second support block to move, which in turn moves the baffle and the barrier plate together. The baffle and the barrier plate then block the flow port, changing the number of nozzles used. Depending on the concentration of nitrogen oxides in the flue gas, the number of nozzles used can be increased or decreased, improving the efficiency of the denitrification agent while achieving distributed spraying and avoiding unnecessary waste of the denitrification agent.

[0016] This invention features a baffle plate on the inner side of the baffle. The baffle plate can block the flow opening at intervals, ensuring the uniformity of the denitrification agent spray while changing the number of nozzles used. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the non-splitter mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the non-splitter mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the present invention without a shunt box;

[0022] Figure 6 This is a schematic diagram showing the cooperation between the diversion box, baffle, and barrier plate of this utility model;

[0023] Figure 7 This utility model Figure 4 A magnified view of a portion of circle A in the center;

[0024] In the diagram, 1 is the main board, 2 is the connecting plate, 3 is the positioning plate, 4 is the movable groove, 5 is the fixed pipe, 6 is the nozzle, 7 is the hose, 8 is the flow port, 9 is the motor bracket, 10 is the rotating motor, 11 is the driving gear, 12 is the rack, 13 is the driven gear, 14 is the rotating shaft, 15 is the L-shaped plate, 16 is the diversion box, 17 is the diversion groove, 18 is the main water inlet pipe, 19 is the dual output shaft motor, 20 is the threaded rod, 21 is the first support plate, 22 is the second support plate, 23 is the baffle, 24 is the through hole, 25 is the fixing rod, 26 is the barrier plate, and 27 is the connecting hole. Detailed Implementation

[0025] To further illustrate the technical solution of this utility model, the following embodiments will be used to further explain this utility model.

[0026] like Figures 1 to 7 As shown, a denitrification agent distribution and injection device for flue gas denitrification includes a main board 1. Connection holes 27 are provided at each of the four corners of the main board 1. Connecting plates 2 are provided on both the left and right sides of the front surface of the main board 1. A positioning plate 3 is fixedly installed between two connecting plates 2. Multiple movable grooves 4 are provided on the positioning plate 3. A fixed tube 5 is rotatably installed in each movable groove 4. A nozzle 6 is fixedly installed at the front end of the fixed tube 5. An angle adjustment mechanism is installed on the upper surface of the positioning plate 3 to adjust the rotation angle of the nozzle 6. The rear end of the fixed tube 5 is connected to a flow port 8 on the main board 1 via a flexible hose 7. The flow port 8 communicates with a diversion mechanism, which is located on the rear side of the main board 1.

[0027] The angle adjustment mechanism includes a motor bracket 9 fixedly mounted on the upper surface of the positioning plate 3. A rotary motor 10 is fixedly mounted on the upper surface of the motor bracket 9. The output shaft of the rotary motor 10 passes through the motor bracket 9 and is fixedly connected to a drive gear 11. The drive gear 11 is meshed with a rack 12. The rack 12 is slidably mounted on the positioning plate 3. Multiple inverted L-shaped plates 15 are provided on the upper surface of the positioning plate 3. The L-shaped plates 15 are located on the planar side of the rack 12. The rack 12 is limited by the cooperation between the L-shaped plates 15 and the driven gears 13. The rack 12 is meshed with multiple driven gears 13. The driven gears 13 are fixedly connected to a rotating shaft 14. The lower end of the rotating shaft 14 is fixedly connected to a fixed tube 5, and the rotating shaft 14 is rotatably connected to the positioning plate 3.

[0028] The diversion mechanism includes a diversion box 16 fixedly mounted on the rear side of the main board 1. A diversion groove 17 is formed inside the diversion box 16, and the flow port 8 communicates with the diversion groove 17. A main inlet pipe 18 is fixedly connected to the rear side of the diversion box 16. A dual-output shaft motor 19 is fixedly mounted in the middle of the upper surface of the diversion box 16. Threaded rods 20 are fixedly connected to both output shafts of the dual-output shaft motor 19. The threaded rods 20 are rotatably connected to the first support plate 21 and threadedly connected to the second support plate 22. The first support plate 21 is fixedly mounted. On the upper surface of the diversion box 16, the second support plate 22 is fixedly mounted on the upper surface of the baffle 23. The inner end of the baffle 23 extends into the diversion groove 17 through the through hole 24 on the end face of the sealing box. The baffle 23 and the through hole 24 are sealed together. The front side of the baffle 23 is in sealed contact with the main board 1 to facilitate the sealing of the flow port 8. A baffle plate 26 is connected to the inner end of the baffle 23 by a fixing rod 25. The distance between the baffle 23 and the baffle plate 26 is equal to twice the distance between two adjacent flow ports 8. The baffle plate 26 is in sealed contact with the main board 1.

[0029] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A denitrification agent distribution and injection device for flue gas denitrification, characterized in that: The system includes a main board (1), with connecting plates (2) on both the left and right sides of the front surface of the main board (1). A positioning plate (3) is fixedly installed between the two connecting plates (2). Multiple movable slots (4) are provided on the positioning plate (3). A fixed tube (5) is rotatably installed in the movable slot (4). A nozzle (6) is fixedly installed at the front end of the fixed tube (5). An angle adjustment mechanism is installed on the upper surface of the positioning plate (3) to adjust the rotation angle of the nozzle (6). The rear end of the fixed tube (5) is connected to the flow port (8) on the main board (1) through a flexible hose (7). The flow port (8) is connected to the diversion mechanism, which is located on the rear side of the main board (1).

2. The denitrification agent distribution and injection device for flue gas denitrification according to claim 1, characterized in that: The angle adjustment mechanism includes a motor bracket (9) fixedly mounted on the upper surface of the positioning plate (3). A rotating motor (10) is fixedly mounted on the upper surface of the motor bracket (9). The output shaft of the rotating motor (10) passes through the motor bracket (9) and is fixedly connected to a drive gear (11). The drive gear (11) meshes with a rack (12). The rack (12) is slidably mounted on the positioning plate (3). The rack (12) meshes with multiple driven gears (13). The driven gears (13) are fixedly connected to a rotating shaft (14). The lower end of the rotating shaft (14) is fixedly connected to a fixed tube (5), and the rotating shaft (14) is rotatably connected to the positioning plate (3).

3. The denitrification agent distribution and injection device for flue gas denitrification according to claim 2, characterized in that: Multiple inverted L-shaped plates (15) are provided on the upper surface of the positioning plate (3). The L-shaped plates (15) are located on the plane side of the rack (12). The rack (12) is limited by the cooperation between the L-shaped plates (15) and the driven gear (13).

4. The denitrification agent distribution and injection device for flue gas denitrification according to claim 1, characterized in that: The diversion mechanism includes a diversion box (16) fixedly installed on the rear side of the main board (1), a diversion groove (17) is provided in the diversion box (16), the flow port (8) is connected to the diversion groove (17), and a main water inlet pipe (18) is fixedly connected to the rear side of the diversion box (16).

5. The denitrification agent distribution and injection device for flue gas denitrification according to claim 4, characterized in that: A dual-output shaft motor (19) is fixedly installed in the middle of the upper surface of the diversion box (16). Threaded rods (20) are fixedly connected to the two output shafts of the dual-output shaft motor (19). The threaded rods (20) are rotatably connected to the first support plate (21) and threadedly connected to the second support plate (22). The first support plate (21) is fixedly installed on the upper surface of the diversion box (16), and the second support plate (22) is fixedly installed on the upper surface of the baffle (23). The inner end of the baffle (23) extends into the diversion groove (17) through the through hole (24) on the end face of the sealing box. The baffle (23) is sealed to the through hole (24). The front side of the baffle (23) is in sealed contact with the main board (1) to facilitate the sealing of the flow port (8).

6. The denitrification agent distribution and injection device for flue gas denitrification according to claim 5, characterized in that: A baffle plate (26) is connected to the inner end of the baffle (23) by a fixing rod (25). The distance between the baffle (23) and the baffle plate (26) is equal to twice the distance between two adjacent flow ports (8). The baffle plate (26) is in sealed contact with the main board (1).

7. The denitrification agent distribution and injection device for flue gas denitrification according to claim 1, characterized in that: Connection holes (27) are provided at each of the four corners of the main board (1).

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