A spray equipment for dust reduction in a thermal power plant

Abstract

This invention relates to the technical field of dust suppression spray equipment, and discloses an environmental dust suppression spray equipment for thermal power plants, comprising: a housing, on which a support assembly is fixedly installed, and on which a spray cannon body is installed. A set of spray nozzles is provided inside the water outlet of the spray cannon body, and the spray nozzles are connected to a water supply pipe. This invention, by setting a dust removal component, can clean the water outlet of the spray nozzles before each spray, ensuring that the spray is not blocked by dust. Furthermore, by driving the sleeve to rotate through a linkage component, the sleeve drives the stirring blades to rotate synchronously, agitating the water in the water tank, causing the deposited impurities to float in the water. During the water supply process, they will pass through the filter screen with the water flow and be effectively intercepted and filtered by the filter screen, avoiding the problem of impurities settling at the bottom of the water tank, which would lead to a decrease in the filtration effect of the filter screen and blockage. It also ensures the unobstructed flow of the spray nozzles, ensuring that the dust suppression spray operation can be carried out stably and efficiently.

Description

Technical Field

[0001] This invention relates to the technical field of dust suppression spray equipment, specifically to a dust suppression spray equipment for thermal power plants. Background Technology

[0002] The dust suppression spray equipment for thermal power plants is an environmental protection device used for dust control in and around the power plant area. During the dust suppression process, water needs to be atomized into fine droplets through the spray nozzle. The droplets collide and adsorb with dust particles in the air, causing the dust to agglomerate and settle, thereby reducing dust diffusion and ensuring that the air quality in the plant area meets environmental protection standards.

[0003] In dust suppression operations at thermal power plants, the unobstructed flow of spray nozzles is a crucial step, directly affecting the atomization effect and dust suppression efficiency. However, in actual operation, the power plant environment contains a large amount of fine dust such as coal ash and fly ash. This dust easily adheres to the inner wall of the spray nozzle with the airflow, or impurities in the water may deposit at the nozzle, causing blockage. In this case, the sprayed droplets become coarse and unevenly distributed, reducing the coverage area instead of forming a fine and uniform mist. Subsequently, the poor atomization effect reduces the probability of collision between droplets and dust, and a large amount of dust cannot be effectively captured because the uncaptured dust continues to drift in the air instead of settling with the droplets. Based on this, the present invention aims to provide a spray device for environmental dust suppression in thermal power plants that can reduce nozzle blockage, ensure atomization effect, and improve dust suppression efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an environmentally friendly dust suppression spray device for thermal power plants, thereby solving the technical problems in the prior art.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A dust suppression spray device for thermal power plants includes:

[0007] The container has a support assembly fixedly installed on it, and a spray cannon body is mounted on the support assembly. A set of spray nozzles is provided inside the water outlet of the spray cannon body. The spray nozzles are connected to a water supply pipe. The water supply pipe is connected to a water tank through an infusion assembly. The water tank is fixedly installed on the container. A water inlet is connected to the top of the water tank. A water level gauge is installed inside the water tank to monitor the water level. A filter screen is fixedly installed at the connection between the infusion assembly and the water tank, and the connection between the two is located at the bottom of the water tank.

[0008] A fixed column is installed through the top of the water tank, with its bottom end located above the filter screen. The fixed column is driven to rise and fall by a drive assembly. A sleeve is fitted onto the outer surface of the fixed column, and the sleeve is rotatably connected to the fixed column. An annular groove is provided on the inner wall of the sleeve. An annular protrusion is fixedly installed on the outer surface of the fixed column, and the annular protrusion is rotatably installed in the annular groove. The sleeve is slidably connected to the top of the water tank. Three circumferentially arranged stirring blades are fixedly installed on the outer surface of the bottom end of the sleeve. The sleeve is driven to rotate by a linkage assembly, which is connected to the drive assembly. When the drive assembly drives the fixed column to descend, the fixed column will block the filter screen.

[0009] A dust removal component is provided at the water outlet of the spray cannon body and is used to clean the water outlet of the spray nozzle.

[0010] As a further embodiment of the present invention: the driving assembly includes a vertical frame, a lifting frame, and a slider; the linkage assembly includes a rack plate and a second gear; the vertical frame is fixedly installed on the top of the water tank; the lifting frame is slidably installed inside the vertical frame; a second cylinder is fixedly installed on the top of the vertical frame; the movable end of the second cylinder is fixedly connected to the top of the lifting frame; the rack plate is disposed at the bottom of the lifting frame; the slider is slidably installed inside the lifting frame; the bottom of the slider is fixedly connected to the top of the fixed column; the second gear is rotatably installed on the bottom of the slider and is fixedly installed on the outer circumferential surface of the sleeve; the second gear meshes with the rack plate; a bidirectional lead screw is rotatably installed inside the lifting frame; the bidirectional lead screw is threadedly connected to the slider; a servo motor is fixedly installed inside the lifting frame; the output shaft of the servo motor is coaxially fixedly connected to the bidirectional lead screw.

[0011] As a further embodiment of the present invention: the rack plate is slidably installed at the bottom of the lifting frame, and a first cylinder is fixedly installed inside the lifting frame. The movable end of the first cylinder is fixedly connected to one end of the rack plate, and the bottom end of the fixing column protrudes from the sleeve. When the fixing column blocks the filter screen, the first cylinder is activated to drive the rack plate to move back and forth.

[0012] As a further aspect of the present invention: a second trigger block connected to the first cylinder is fixedly installed on the top of the water tank; a first trigger switch connected to the servo motor is fixedly installed on the upright frame; a first trigger block is fixedly installed on the top of the lifting frame; and a second trigger switch is fixedly installed on the bottom of the lifting frame. When the lifting frame descends, the first trigger block separates from the first trigger switch, while the second trigger switch connects to the second trigger block; when the lifting frame rises, the second trigger switch separates from the second trigger block, while the first trigger block connects to the first trigger switch.

[0013] As a further embodiment of the present invention: the infusion assembly includes an outlet pipe, a filter assembly and a water pump, the inlet end of the outlet pipe is connected to the bottom of the water tank, and the filter screen is fixedly installed at the connection between the outlet pipe and the water tank, and the outlet pipe is connected to the inlet end of the infusion pipe in sequence through the filter assembly and the water pump.

[0014] As a further aspect of the present invention: the dust removal assembly includes a collar, a through hole, a jet nozzle, and an air supply pipe. The collar is sleeved on the water outlet of the spray cannon body. Multiple through holes are provided on the outer wall of the water outlet of the spray cannon body. Each through hole is provided with a jet nozzle. The jet nozzle is fixedly installed on the collar and is connected to the air supply pipe. The air supply pipe is connected to the high-pressure air supply assembly. The air outlet of the jet nozzle faces the water outlet of the spray nozzle. Before the spray cannon body sprays, the high-pressure air supply assembly sprays gas through the air supply pipe and the jet nozzle.

[0015] As a further aspect of the present invention: the collar is rotatably connected to the spray cannon body, the nozzle is slidably connected to the through hole, and the collar is driven to rotate by a transmission component. When the spray cannon body sprays, the transmission component drives the collar to rotate so that the nozzle outlet moves away from the nozzle outlet. When the spray cannon body stops spraying, the transmission component drives the collar to rotate so that the nozzle outlet faces the nozzle outlet.

[0016] As a further aspect of the present invention: the transmission assembly includes a first gear and a tooth block. The first gear is rotatably mounted on the outer circular surface of the water outlet of the spray cannon body. The first gear is driven to rotate by a drive source built into the spray cannon body. The multiple tooth blocks are fixedly mounted on the inner wall of the collar, and the first gear meshes with the multiple tooth blocks.

[0017] The beneficial effects of this invention are:

[0018] 1. In this invention, a dust removal component is installed at the water outlet of the spray cannon body to clean the water outlet of the spray nozzle. This allows for cleaning of the spray nozzle outlet before each spray, ensuring that the spray is not blocked by dust. During water delivery, the linkage component drives the sleeve to rotate, which in turn drives the stirring blades to rotate synchronously, agitating the water in the water tank. This causes the deposited impurities to float in the water and pass through the filter screen with the water flow, where they are effectively intercepted and filtered. This prevents impurities from accumulating at the bottom of the water tank, which would reduce the filtration efficiency of the filter screen and cause clogging. At the same time, it also prevents unfiltered impurities from entering the spray nozzle and causing blockage, ensuring the smooth flow of the spray nozzle and ensuring that the dust suppression spray operation can be carried out stably and efficiently.

[0019] 2. In this invention, the first cylinder drives the water level gauge to move back and forth, and the water level gauge drives the second gear to rotate, thereby causing the sleeve and stirring blade to stir the water. Since the fixed column blocks the filter screen, the sleeve and stirring blade stir the area near the filter screen, thus ensuring that when the fixed column rises to open the filter screen, the impurities are already floating in the water. At this time, water delivery and spraying can be carried out, thereby shortening the preparation time. Subsequently, during the spraying process, the water level gauge is kept stationary, and the slider moves to drive the sleeve and stirring blade to stir the water in the water tank, which plays a more comprehensive role in stirring and preventing impurities from settling.

[0020] 3. In this invention, the first gear is driven to rotate by a drive source, and the first gear meshes with the tooth block. The first gear will drive the collar to rotate at the water outlet of the spray cannon body through the tooth block. The collar will drive the air nozzle to move in the through hole, thereby moving the air nozzle away from the spray nozzle and avoiding blocking the water outlet of the spray nozzle. When the spraying stops and the machine is idle, the first gear can be rotated in the opposite direction to make the collar rotate in the opposite direction, thereby returning the air nozzle and the spray nozzle to the aligned state. In this way, the spray nozzle can be cleaned by air spraying before the next spraying. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure at the bottom of the water tank in this invention;

[0024] Figure 3 This is a cross-sectional structural schematic diagram of the water tank in this invention;

[0025] Figure 4 In this invention Figure 3 A side view of the structure;

[0026] Figure 5 This is a schematic diagram of the lifting frame in this invention;

[0027] Figure 6 This is a schematic diagram of the slider structure in this invention;

[0028] Figure 7 This is a cross-sectional structural schematic diagram of the sleeve in this invention;

[0029] Figure 8 This is a schematic diagram of the lowering structure of the lifting frame in this invention;

[0030] Figure 9 This is a schematic diagram of the structure at the outlet of the main body of the spray cannon in this invention;

[0031] Figure 10This is a schematic diagram of the first gear and gear block mating structure in this invention.

[0032] In the diagram: 1. Housing; 2. Support assembly; 3. Main body of the spray cannon; 4. Spray nozzle; 5. Collar; 6. Through hole; 7. Air nozzle; 8. Air supply pipe; 9. Water supply pipe; 10. First gear; 11. Gear block; 12. Water tank; 13. Water inlet; 14. Water level gauge; 15. Water outlet pipe; 16. Filter assembly; 17. Water pump; 18. Filter screen; 19. Sleeve; 20. Stirring blade; 21. Fixed column; 22. Stand; 23. Lifting frame; 24. Rack plate; 25. Slider; 26. Second gear; 27. Two-way lead screw; 28. Servo motor; 29. ​​First cylinder; 30. Second cylinder; 31. First trigger switch; 32. First trigger block; 33. Second trigger switch; 34. Second trigger block; 35. Annular protrusion; 36. Annular groove. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-10 As shown, this invention is a spray device for dust suppression in thermal power plants, comprising:

[0035] The container 1 has a support assembly 2 fixedly installed on it. A spray cannon body 3 is installed on the support assembly 2. A set of spray nozzles 4 is provided inside the water outlet of the spray cannon body 3. The spray nozzles 4 are connected to a water supply pipe 9. The water supply pipe 9 is connected to a water tank 12 through an infusion assembly. The water tank 12 is fixedly installed on the container 1. A water inlet 13 is connected to the top of the water tank 12. A water level gauge 14 is provided inside the water tank 12. The water level gauge 14 is used to monitor the water level of the water tank 12. A filter screen 18 is fixedly installed at the connection between the infusion assembly and the water tank 12, and the connection between the two is located at the bottom of the water tank 12.

[0036] A fixed column 21 is installed through the top of the water tank 12, with its bottom end positioned above the filter screen 18. The fixed column 21 is driven to rise and fall by a drive assembly. A sleeve 19 is fitted onto the outer surface of the fixed column 21, and the sleeve 19 is rotatably connected to the fixed column 21. An annular groove 36 is provided on the inner wall of the sleeve 19. An annular protrusion 35 is fixedly installed on the outer surface of the fixed column 21, and the annular protrusion 35 is rotatably installed in the annular groove 36. The sleeve 19 is slidably connected to the top of the water tank 12. Three circumferentially arranged stirring blades 20 are fixedly installed on the outer surface of the bottom end of the sleeve 19. The sleeve 19 is driven to rotate by a linkage assembly, which is connected to the drive assembly. When the drive assembly drives the fixed column 21 to descend, the fixed column 21 will block the filter screen 18.

[0037] A dust removal component is provided at the water outlet of the spray cannon body 3, and is used to clean the water outlet of the spray nozzle 4.

[0038] In one embodiment of this invention, it should be noted that the support assembly 2 of the present invention includes a rotating chassis, an adjusting bracket, a connector, and other components. The above-mentioned components, the water level gauge 14, and the spray cannon body 3 are all prior art. The present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of the present invention.

[0039] The working principle of this invention is as follows: First, water is injected into the water tank 12 through the water inlet 13. The water level in the water tank 12 is monitored by the water level gauge 14. Once the water level is lower than the threshold of the water level gauge 14, water needs to be added through the water inlet 13. When it is necessary to spray dust suppression, the water in the water tank 12 is transported to the water supply pipe 9 through the liquid delivery component. Then, the water is sprayed out as water mist through the spray nozzle 4. The water mist is then blown up by the spray cannon body 3, allowing the water mist to fall from top to bottom in the target area, thereby achieving the purpose of dust suppression. During this process, the position of the spray cannon body 3 can be adjusted according to the needs through the bracket component 2, thereby changing the landing point of the water mist. At the same time, existing technology can be used to place the box 1 on the transport component, such as the guide vehicle or the trolley, so that the box 1 can be moved, thereby further expanding the range and flexibility of dust suppression.

[0040] Considering the dusty environment of thermal power plants and the working mode of spraying, the unobstructed flow of the spray nozzle 4 is crucial to the dust suppression effect. Therefore, a dust removal component is installed at the water outlet of the spray cannon body 3 to clean the water outlet of the spray nozzle 4. This is to prevent dust from covering the water outlet of the spray nozzle 4 when the spray cannon body 3 is idle. Therefore, the dust removal component can clean the water outlet of the spray nozzle 4 before each spray to ensure that the water mist is not blocked by dust.

[0041] More importantly, considering the presence of impurities in the water, which can clog the spray nozzle 4 when transported into it, the problem of impurities clogging the nozzle 4 is more serious than dust covering the water outlet. Therefore, a filter screen 18 is installed. When water is transported, it passes through the filter screen 18 for initial cleaning. Simultaneously, when the spray cannon body 3 is idle, impurities in the water will accumulate at the bottom of the water tank 12, leading to impurity buildup on the filter screen 18. Over time, this will cause the filter screen 18 to become less effective and clogged. Therefore, a sleeve 19, a stirring blade 20, and a fixed column 21 are installed on the water tank 12. When pumping water, the fixed column 21 is first raised by the drive assembly. Since the fixed column 21 and the sleeve 19 are connected by an annular protrusion 35 and an annular groove 36, the fixed column 21 will synchronously drive the sleeve 19 to rise. Figure 3 As shown in the example, the fixed column 21 and the sleeve 19 are far away from the bottom plate of the water tank 12. When water is being transported, the sleeve 19 is driven to rotate by the linkage component. The sleeve 19 drives the stirring blade 20 to rotate synchronously, thereby stirring the water in the water tank 12. This allows the deposited impurities to float in the water. When the impurities are in a floating state, they will pass through the filter screen 18 with the water flow during the water transport process and be effectively intercepted and filtered by the filter screen 18. This avoids the impurities from settling at the bottom of the water tank 12 and gradually accumulating on the filter screen 18 during subsequent water transport because they cannot enter the filter screen 18 with the water flow, which would lead to a decrease in the filtration effect of the filter screen 18 and blockage. At the same time, it also prevents unfiltered impurities from entering the spray nozzle 4 and causing blockage, ensuring the smooth flow of the spray nozzle 4 and ensuring that the spray dust suppression operation can be carried out stably and efficiently.

[0042] Furthermore, after the spraying is completed, the fixed column 21 is driven to descend by the drive component, so that the fixed column 21 can block the filter screen 18. This can directly prevent impurities from falling onto the filter screen 18 during the idle period, thereby protecting the filter screen 18.

[0043] like Figures 1-8As shown in a preferred embodiment of the present invention, the driving assembly includes a stand 22, a lifting frame 23, and a slider 25. The linkage assembly includes a rack plate 24 and a second gear 26. The stand 22 is fixedly installed on the top of the water tank 12. The lifting frame 23 is slidably installed inside the stand 22. A second cylinder 30 is fixedly installed on the top of the stand 22. The movable end of the second cylinder 30 is fixedly connected to the top of the lifting frame 23. The rack plate 24 is disposed at the bottom of the lifting frame 23. The slider 25 is slidably installed inside the lifting frame 23. The bottom of the slider 25 is fixedly connected to the top of the fixed column 21. The second gear 26 is rotatably installed on the bottom of the slider 25 and is fixedly installed on the outer surface of the sleeve 19. The second gear 26 meshes with the rack plate 24. A bidirectional lead screw 27 is rotatably installed inside the lifting frame 23. The bidirectional lead screw 27 is threadedly connected to the slider 25. A servo motor 28 is fixedly installed inside the lifting frame 23. The output shaft of the servo motor 28 is coaxially fixedly connected to the bidirectional lead screw 27.

[0044] Specifically, the rack plate 24 is slidably installed at the bottom of the lifting frame 23, and a first cylinder 29 is fixedly installed inside the lifting frame 23. The movable end of the first cylinder 29 is fixedly connected to one end of the rack plate 24. The bottom end of the fixing column 21 protrudes from the sleeve 19. When the fixing column 21 blocks the filter screen 18, the first cylinder 29 is activated to drive the rack plate 24 to move back and forth.

[0045] Specifically, a second trigger block 34 connected to the first cylinder 29 is fixedly installed on the top of the water tank 12, a first trigger switch 31 connected to the servo motor 28 is fixedly installed on the upright frame 22, a first trigger block 32 is fixedly installed on the top of the lifting frame 23, and a second trigger switch 33 is fixedly installed on the bottom of the lifting frame 23. When the lifting frame 23 descends, the first trigger block 32 separates from the first trigger switch 31, while the second trigger switch 33 connects to the second trigger block 34; when the lifting frame 23 rises, the second trigger switch 33 separates from the second trigger block 34, while the first trigger block 32 connects to the first trigger switch 31.

[0046] The sleeve 19 and the top of the water tank 12 are designed with dynamic sealing to achieve a sealing effect.

[0047] In one embodiment, it should be noted that the servo motor 28, the first cylinder 29, the first trigger switch 31 and the second trigger block 34 described in this invention are all prior art. This invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0048] In practical application, the second cylinder 30 extends and retracts to drive the lifting frame 23 to rise and fall on the upright frame 22. The slider 25 is set inside the lifting frame 23 and is fixedly connected to the fixed column 21. Therefore, the slider 25 and the fixed column 21 rise and fall synchronously, thus achieving the purpose of the fixed column 21 descending to block the filter screen 18 and the fixed column 21 rising to open the filter screen 18. When the filter screen 18 is opened, the servo motor 28 is started to drive the bidirectional lead screw 27 to rotate. The bidirectional lead screw 27 will drive the slider 25 to reciprocate within the lifting frame 23. When the slider 25 reciprocates, it will drive the second gear 26 to move synchronously. Because the second gear 26 meshes with the rack plate 24, the second gear 26 will rotate during the reciprocating movement of the slider 25. When the fixed column 21 moves in the water tank 12, the sleeve 19 will rotate continuously, thus enabling the water in the water tank 12 to be stirred in a reciprocating motion, expanding the stirring range.

[0049] More importantly, before spraying, such as Figure 8 As shown in the example, the fixed column 21 blocks the filter screen 18, and the bottom end of the fixed column 21 protrudes from the sleeve 19. Therefore, the bottom surface of the sleeve 19 does not directly contact the bottom plate of the water tank 12. The sleeve 19 and the stirring blade 20 are very close to the bottom plate of the water tank 12. At this time, the first cylinder 29 drives the water level gauge 14 to move back and forth, and the water level gauge 14 drives the second gear 26 to rotate, so that the sleeve 19 and the stirring blade 20 stir the water. Since the fixed column 21 blocks the filter screen 18, the sleeve 19 and the stirring blade 20 stir the area near the filter screen 18, so as to ensure that when the fixed column 21 rises and opens the filter screen 18, the impurities are already floating in the water. At this time, water delivery and spraying can be carried out, thereby shortening the preparation time. Then, during the spraying process, the water level gauge 14 is kept stationary, and the slider 25 moves to drive the sleeve 19 and the stirring blade 20 to stir the water in the water tank 12, which plays a more comprehensive role in stirring and preventing impurities from settling.

[0050] It is important to note that by setting the first trigger switch 31 and the first trigger block 32 to control the start of the servo motor 28, and the second trigger switch 33 and the second trigger block 34 to control the start of the first cylinder 29, when the filter screen 18 is blocked, the second trigger switch 33 is connected to the second trigger block 34, while the first trigger switch 31 is separated from the first trigger block 32. This ensures that only the first cylinder 29 can be started, and only the sleeve 19 can rotate, ensuring that the fixed column 21 always blocks the filter screen 18. After the fixed column 21 rises, the second trigger switch 33 is separated from the second trigger block 34, while the first trigger switch 31 is connected to the first trigger block 32. This ensures that the position of the rack plate 24 is fixed, thereby ensuring that when the slider 25 moves, the sleeve 19 and the stirring blade 20 can rotate, avoiding the problem that the rack plate 24 and the second gear 26 cannot rotate due to synchronous displacement.

[0051] like Figures 1-2 As shown, in a preferred embodiment of the present invention, the infusion assembly includes an outlet pipe 15, a filter assembly 16 and a water pump 17. The inlet end of the outlet pipe 15 is connected to the bottom of the water tank 12, and the filter screen 18 is fixedly installed at the connection between the outlet pipe 15 and the water tank 12. The outlet pipe 15 is connected to the inlet end of the infusion pipe 9 in sequence through the filter assembly 16 and the water pump 17.

[0052] In one embodiment, it should be noted that the filter assembly 16 and the water pump 17 described in this invention are both prior art. This invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0053] In practical applications, this embodiment can further improve the purification and filtration effect of water by setting the filter component 16, and avoid clogging of the internal channels of the spray nozzle 4.

[0054] like Figures 1-10 As shown, in a preferred embodiment of the present invention, the dust removal assembly includes a collar 5, a through hole 6, a nozzle 7, and an air supply pipe 8. The collar 5 is sleeved on the water outlet of the spray cannon body 3. Multiple through holes 6 are provided on the outer wall of the water outlet of the spray cannon body 3. Each through hole 6 is provided with a nozzle 7. The nozzle 7 is fixedly installed on the collar 5 and is connected to the air supply pipe 8. The air supply pipe 8 is connected to the high-pressure air supply assembly. The air outlet of the nozzle 7 faces the water outlet of the spray nozzle 4. Before the spray cannon body 3 sprays, the high-pressure air supply assembly sprays gas through the air supply pipe 8 and the nozzle 7.

[0055] Specifically, the collar 5 is rotatably connected to the spray cannon body 3, the nozzle 7 is slidably connected to the through hole 6, and the collar 5 is driven to rotate by the transmission component. When the spray cannon body 3 sprays, the transmission component drives the collar 5 to rotate so that the air outlet of the nozzle 7 moves away from the water outlet of the spray nozzle 4. When the spray cannon body 3 stops spraying, the transmission component drives the collar 5 to rotate so that the air outlet of the nozzle 7 faces the water outlet of the spray nozzle 4.

[0056] Specifically, the transmission assembly includes a first gear 10 and a tooth block 11. The first gear 10 is rotatably mounted on the outer circular surface of the water outlet of the spray cannon body 3. The first gear 10 is driven to rotate by a drive source built into the spray cannon body 3. The multiple tooth blocks 11 are fixedly mounted on the inner wall of the collar 5, and the first gear 10 meshes with the multiple tooth blocks 11.

[0057] In one embodiment, the driving source can be a servo motor, an electric motor, or other components capable of reciprocating rotation. This embodiment does not impose specific limitations. It should be noted that the high-pressure gas transmission assembly of the present invention includes high-pressure gas transmission pipelines, high-pressure valves, check valves, pressure reducing valves, pressure monitoring components, and other components. All of the above components are existing technologies, and the present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of the present invention.

[0058] In practical application, high-pressure gas is delivered to each nozzle 7 through the gas supply pipe 8, so that the gas sprayed from the nozzle 7 blows towards the spray nozzle 4, thereby blowing away the dust covering the water outlet of the spray nozzle 4. This ensures that the water mist is not blocked by dust when it is sprayed.

[0059] Considering that the air outlet of the nozzle 7 always faces the water outlet of the spray nozzle 4, there will be a problem of the nozzle 7 blocking the water mist when the spray nozzle 4 is spraying. At this time, the first gear 10 is driven to rotate by the drive source. The first gear 10 meshes with the tooth block 11. The first gear 10 will drive the collar 5 to rotate at the water outlet of the spray cannon body 3 through the tooth block 11. The collar 5 will drive the nozzle 7 to move in the through hole 6, thereby moving the nozzle 7 away from the spray nozzle 4 and avoiding blocking the water outlet of the spray nozzle 4. When the spraying stops and the machine is idle, the first gear 10 can be rotated in the opposite direction, causing the collar 5 to rotate in the opposite direction, so that the nozzle 7 and the spray nozzle 4 are aligned. In this way, the spray nozzle 4 can be cleaned by spraying before the next spraying.

[0060] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A spray device for dust suppression in thermal power plants, characterized in that, include: A housing (1) is provided with a support assembly (2) fixedly installed on the housing (1). A spray cannon body (3) is installed on the support assembly (2). A set of spray nozzles (4) is provided inside the water outlet of the spray cannon body (3). The spray nozzles (4) are connected to the water supply pipe (9). The water supply pipe (9) is connected to the water tank (12) through the infusion assembly. The water tank (12) is fixedly installed on the housing (1). A water inlet (13) is connected to the top of the water tank (12). A water level gauge (14) is provided inside the water tank (12). The water level gauge (14) is used to monitor the water level of the water tank (12). A filter screen (18) is fixedly installed at the connection between the infusion assembly and the water tank (12). The connection between the two is located at the bottom of the water tank (12). A fixed column (21) is installed through the top of the water tank (12). The bottom end of the fixed column (21) is located above the filter screen (18). The fixed column (21) is driven to rise and fall by a drive assembly. A sleeve (19) is fitted on the outer circular surface of the fixed column (21). The sleeve (19) is rotatably connected to the fixed column (21). An annular groove (36) is opened on the inner wall of the sleeve (19). An annular protrusion (35) is fixedly installed on the outer circular surface of the fixed column (21). The annular protrusion (35) is rotatably installed in the annular groove (36). The sleeve (19) is slidably connected to the top of the water tank (12). Three circumferentially arranged stirring blades (20) are fixedly installed on the outer circular surface of the bottom end of the sleeve (19). The sleeve (19) is driven to rotate by a linkage assembly. The linkage assembly is connected to the drive assembly. When the drive assembly drives the fixed column (21) to descend, the fixed column (21) will block the filter screen (18). The cleaning component is located at the water outlet of the spray cannon body (3) and is used to clean the water outlet of the spray nozzle (4). The driving assembly includes a stand (22), a lifting frame (23), and a slider (25). The linkage assembly includes a rack (24) and a second gear (26). The stand (22) is fixedly installed on the top of the water tank (12). The lifting frame (23) is slidably installed inside the stand (22). A second cylinder (30) is fixedly installed on the top of the stand (22). The movable end of the second cylinder (30) is fixedly connected to the top of the lifting frame (23). The rack (24) is located at the bottom of the lifting frame (23). The slider (25) is slidably installed on the lifting frame (23). Inside the lifting frame (23), the bottom of the slider (25) is fixedly connected to the top of the fixed column (21), the second gear (26) is rotatably installed on the bottom of the slider (25), and the second gear (26) is fixedly installed on the outer surface of the sleeve (19). The second gear (26) meshes with the rack plate (24). A bidirectional screw (27) is rotatably installed inside the lifting frame (23). The bidirectional screw (27) is threadedly connected to the slider (25). A servo motor (28) is fixedly installed inside the lifting frame (23). The output shaft of the servo motor (28) is coaxially fixedly connected to the bidirectional screw (27). The rack plate (24) is slidably installed at the bottom of the lifting frame (23). A first cylinder (29) is fixedly installed inside the lifting frame (23). The movable end of the first cylinder (29) is fixedly connected to one end of the rack plate (24). The bottom end of the fixing column (21) protrudes from the sleeve (19). When the fixing column (21) blocks the filter screen (18), the first cylinder (29) starts to drive the rack plate (24) to move back and forth. The top of the water tank (12) is fixedly equipped with a second trigger block (34) connected to the first cylinder (29). The upright frame (22) is fixedly equipped with a first trigger switch (31) connected to the servo motor (28). The top of the lifting frame (23) is fixedly equipped with a first trigger block (32). The bottom of the lifting frame (23) is fixedly equipped with a second trigger switch (33). When the lifting frame (23) descends, the first trigger block (32) separates from the first trigger switch (31), while the second trigger switch (33) connects to the second trigger block (34). When the lifting frame (23) rises, the second trigger switch (33) separates from the second trigger block (34), while the first trigger block (32) connects to the first trigger switch (31). The infusion assembly includes an outlet pipe (15), a filter assembly (16), and a water pump (17). The inlet end of the outlet pipe (15) is connected to the bottom of the water tank (12), and the filter screen (18) is fixedly installed at the connection between the outlet pipe (15) and the water tank (12). The outlet pipe (15) is connected to the inlet end of the infusion pipe (9) in sequence through the filter assembly (16) and the water pump (17).

2. The spray equipment for dust suppression in thermal power plants according to claim 1, characterized in that, The dust removal assembly includes a collar (5), a through hole (6), a nozzle (7), and an air supply pipe (8). The collar (5) is fitted onto the water outlet of the spray cannon body (3). Multiple through holes (6) are provided on the outer wall of the water outlet of the spray cannon body (3). Each through hole (6) is provided with a nozzle (7). The nozzle (7) is fixedly installed on the collar (5) and is connected to the air supply pipe (8). The air supply pipe (8) is connected to the high-pressure air supply assembly. The air outlet of the nozzle (7) faces the water outlet of the spray nozzle (4). Before the spray cannon body (3) sprays, the high-pressure air supply assembly sprays gas through the air supply pipe (8) and the nozzle (7).

3. The spray equipment for dust suppression in thermal power plants according to claim 2, characterized in that, The collar (5) is rotatably connected to the spray cannon body (3), and the nozzle (7) is slidably connected to the through hole (6). The collar (5) is driven to rotate by the transmission assembly. When the spray cannon body (3) sprays, the transmission assembly drives the collar (5) to rotate so that the air outlet of the nozzle (7) moves away from the water outlet of the spray nozzle (4). When the spray cannon body (3) stops spraying, the transmission assembly drives the collar (5) to rotate so that the air outlet of the nozzle (7) faces the water outlet of the spray nozzle (4).

4. The spray equipment for dust suppression in thermal power plants according to claim 3, characterized in that, The transmission assembly includes a first gear (10) and a tooth block (11). The first gear (10) is rotatably mounted on the outer circular surface of the water outlet of the spray cannon body (3). The first gear (10) is driven to rotate by a drive source built into the spray cannon body (3). The multiple tooth blocks (11) are fixedly mounted on the inner wall of the collar (5), and the first gear (10) meshes with the multiple tooth blocks (11).

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