Spraying equipment for environmental protection and dust falling of thermal power plant

Abstract

The invention relates to the technical field of spraying equipment for dust fall, and discloses spraying equipment for environmental protection and dust fall of a thermal power plant, which comprises a box body, a bracket assembly is fixedly mounted on the box body, a spraying gun main body is mounted on the bracket assembly, a group of spraying nozzles are arranged on the inner side of a water outlet of the spraying gun main body, and the spraying nozzles are communicated with a water conveying pipe; by arranging the ash removal assembly, a water outlet of the spraying nozzle can be cleaned before spraying every time, it is ensured that spraying is not blocked by dust, the linkage assembly drives the sleeve to rotate, the sleeve drives the stirring blades to rotate synchronously, water in the water tank is stirred, deposited impurities float in the water, and the dust removal effect is improved. In the water delivery process, water flows through the filter screen together with water flow and then is effectively intercepted and filtered by the filter screen, so that the problems that the filter effect of the filter screen is reduced and the filter screen is blocked due to the fact that impurities are deposited at the bottom of the water tank are avoided, the smoothness of the spray nozzle is also guaranteed, and the spray dust reduction operation can be stably and efficiently carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust spraying equipment, in particular to a power plant environmental protection dust spraying equipment. BACKGROUND

[0002] The power plant environmental protection dust spraying equipment is an environmental protection equipment for dust treatment in the power plant area and the surrounding area. In the dust reduction process, the water is atomized into fine droplets through the spray nozzle. The droplets collide with and adsorb the dust particles in the air, so that the dust is aggregated and then settled, thereby reducing the dust diffusion and ensuring that the air quality in the plant area meets the environmental protection standards. In the dust reduction operation of the power plant, the smoothness of the spray nozzle is a key step, which directly affects the atomization effect of the droplets and the dust reduction efficiency. However, in actual operation, there are a large amount of fine dust such as coal ash and fly ash in the power plant environment. These dusts are easy to adhere to the inner wall of the spray nozzle with the airflow, or to deposit at the nozzle due to the impurities contained in the water, resulting in the clogging of the spray nozzle. At this time, the droplets sprayed by the spray nozzle become coarse and unevenly distributed, the coverage range is reduced, and instead of forming a fine and uniform mist curtain, the atomization effect is poor, which reduces the collision probability of the droplets and the dust, and a large amount of dust cannot be effectively captured. Because the unabsorbed dust will continue to float in the air instead of settling with the droplets. Based on this, the present application provides a power plant environmental protection dust spraying equipment which can reduce the clogging of the spray nozzle, ensure the atomization effect, and improve the dust reduction efficiency. SUMMARY

[0003] The present application aims at the deficiencies of the prior art, and provides a power plant environmental protection dust spraying equipment to solve the technical problems in the prior art.

[0004] The object of the present application can be achieved by the following technical solutions. A power plant environmental protection dust spraying equipment, comprising: A box body is provided with a support assembly fixedly installed thereon, and a spray gun main body is installed on the support assembly. A group of spray nozzles are arranged inside the water outlet of the spray gun main body. The spray nozzles are communicated with a water delivery pipe. The water delivery pipe is communicated with a water tank through a liquid delivery assembly. The water tank is fixedly installed on the box body. The water tank is provided with a water inlet at the top. A water level meter is arranged in the water tank for monitoring the water level of the water tank. A filter screen is fixedly installed at the communication part of the liquid delivery assembly and the water tank, and the communication part is located at the bottom of the water tank. The fixed column is arranged through the water tank top, the bottom end of the fixed column is above the filter screen, the fixed column is driven to lift by the driving assembly, a sleeve is sleeved on the outer circular surface of the fixed column, the sleeve is rotationally connected with the fixed column, an annular sliding groove is formed in the inner wall of the sleeve, an annular protrusion is fixedly installed on the outer circular surface of the fixed column, the annular protrusion is rotationally installed in the annular sliding groove, the sleeve is slidingly connected with the water tank top, three circumferentially arranged stirring blades are fixedly installed on the outer circular surface of the bottom end of the sleeve, the sleeve is driven to rotate by the linkage assembly, the linkage assembly is connected with the driving assembly, when the driving assembly drives the fixed column to descend, the fixed column blocks the filter screen. The ash cleaning assembly is arranged at the water outlet of the spray gun body, and is used for cleaning the water outlet of the spray nozzle.

[0005] As a further scheme of the present application, the driving assembly comprises a stand, a lifting frame and a sliding block, the linkage assembly comprises a rack plate and a second gear, the stand is fixedly installed on the water tank top, the lifting frame is slidingly installed in the stand, a second air cylinder is fixedly installed on the top of the stand, the movable end of the second air cylinder is fixedly connected with the top of the lifting frame, the rack plate is arranged at the bottom of the lifting frame, the sliding block is slidingly installed in the lifting frame, the bottom of the sliding block is fixedly connected with the top of the fixed column, the second gear is rotationally installed at the bottom of the sliding block and is fixedly installed on the outer circular surface of the sleeve, the second gear is engaged with the rack plate, a bidirectional screw rod is rotationally installed in the lifting frame, the bidirectional screw rod is threadedly connected with the sliding block, a servo motor is fixedly installed in the lifting frame, and the output shaft of the servo motor is coaxially and fixedly connected with the bidirectional screw rod.

[0006] As a further scheme of the present application, the rack plate is slidingly installed at the bottom of the lifting frame, a first air cylinder is fixedly installed in the lifting frame, the movable end of the first air cylinder is fixedly connected with one end of the rack plate, and the bottom end of the fixed column protrudes from the sleeve; when the fixed column blocks the filter screen, the first air cylinder is started to drive the rack plate to reciprocatingly move.

[0007] As a further scheme of the present application, a second trigger block connected with the first air cylinder is fixedly installed on the water tank top, a first trigger switch connected with the servo motor is fixedly installed on the stand, 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 is separated from the first trigger switch, and the second trigger switch is connected with the second trigger block; when the lifting frame ascends, the second trigger switch is separated from the second trigger block, and the first trigger block is connected with the first trigger switch.

[0008] As a further scheme of the present application: the infusion assembly comprises a water outlet pipe, a filter assembly and a water pump, the water inlet end of the water outlet pipe is communicated with the bottom of the water tank, and the filter screen is fixedly installed at the water outlet pipe communicated with the water tank, and the water outlet pipe is communicated with the water inlet end of the water delivery pipe in sequence through the filter assembly and the water pump.

[0009] As a further scheme of the present application: the ash removal assembly comprises a sleeve ring, a through hole, a gas jet nozzle and a gas delivery pipe, the sleeve ring is sleeved on the water outlet of the spray gun body, a plurality of through holes are formed on the outer wall of the water outlet of the spray gun body, and the gas jet nozzle is arranged in each through hole, the gas jet nozzle is fixedly installed on the sleeve ring, the gas jet nozzle is communicated with the gas delivery pipe, the gas delivery pipe is communicated with the high-pressure gas delivery assembly, the gas outlet of the gas jet nozzle faces the water outlet of the spray nozzle, and the high-pressure gas delivery assembly sprays gas through the gas delivery pipe and the gas jet nozzle before the spray gun body sprays.

[0010] As a further scheme of the present application: the sleeve ring is rotationally connected with the spray gun body, the gas jet nozzle is slidingly connected with the through hole, the sleeve ring is driven to rotate by the transmission assembly, when the spray gun body sprays, the transmission assembly drives the sleeve ring to rotate so that the gas outlet of the gas jet nozzle is away from the water outlet of the spray nozzle, and when the spray gun body stops spraying, the transmission assembly drives the sleeve ring to rotate so that the gas outlet of the gas jet nozzle faces the water outlet of the spray nozzle.

[0011] As a further scheme of the present application: the transmission assembly comprises a first gear and a tooth block, the first gear is rotationally installed on the outer circular surface of the water outlet of the spray gun body, the first gear is driven to rotate by the built-in driving source of the spray gun body, and a plurality of tooth blocks are fixedly installed on the inner wall of the sleeve ring, and the first gear is engaged with the plurality of tooth blocks.

[0012] The present application has the following advantages: 1、In the present application, the ash removal assembly is arranged at the water outlet of the spray gun body, which is used for cleaning the water outlet of the spray nozzle, can clean the water outlet of the spray nozzle before each spraying, ensures that the spray nozzle is not blocked by dust during spraying, and drives the sleeve to rotate through the linkage assembly during water delivery, so that the stirring blades are synchronously rotated to stir the water in the water tank, so that the deposited impurities float in the water, and the impurities are intercepted and filtered by the filter screen during water delivery, thereby avoiding the problem that the impurities are deposited at the bottom of the water tank, causing the filtering effect of the filter screen to decrease and be blocked, and preventing the unfiltered impurities from entering the spray nozzle to cause blockage, thereby ensuring the smoothness of the spray nozzle and ensuring that the spray dust removal operation can be stably and efficiently performed. 2、The water level gauge is driven to move reciprocatingly by the first cylinder, and the water level gauge drives the second gear to rotate, so that the sleeve and the stirring blade stir the water, and since the fixed column blocks the filter screen, the sleeve and the stirring blade stir the area near the filter screen at this time, so that when the fixed column rises to open the filter screen, impurities have already floated in the water, at which time water conveying operation can be carried out to spray, so as to shorten the preparation time, and then in the spraying process, the position of the water level gauge is stationary, the sleeve and the stirring blade are driven to stir the water in the water tank by the sliding block, so as to play a more comprehensive stirring and prevent the impurities from depositing role; 3、The sleeve ring is driven to rotate at the water outlet of the spray gun main body by the first gear through the driving source, the sleeve ring drives the air jet nozzle to move in the through hole, so that the air jet nozzle is away from the spray nozzle, avoiding blocking the water outlet of the spray nozzle, and when stopping spraying and idling, the sleeve ring is reversely rotated by reversely rotating the first gear, so that the air jet nozzle and the spray nozzle return to the aligned state, so that the spray nozzle can be cleaned by air jet before the next spraying. BRIEF DESCRIPTION OF DRAWINGS

[0013] The application will be further described below in combination with the drawings.

[0014] Figure 1 is the overall structure schematic diagram of the application; Figure 2 is the structure schematic diagram of the bottom of the water tank in the application; Figure 3 is the structure schematic diagram of the water tank in the application; Figure 4 is the structure schematic diagram of the water level gauge in the application Figure 3 side view; Figure 5 is the structure schematic diagram of the lifting frame in the application; Figure 6 is the structure schematic diagram of the sliding block in the application; Figure 7 is the structure schematic diagram of the sleeve in the application; Figure 8 is the structure schematic diagram of the lifting frame in the application; Figure 9 is the structure schematic diagram of the outlet of the spray gun main body in the application; Figure 10 is the structure schematic diagram of the first gear and the gear block in the application.

[0015] In the figure: 1, box; 2, support assembly; 3, spray gun main body; 4, spray nozzle; 5, sleeve; 6, through hole; 7, air jet nozzle; 8, gas delivery pipe; 9, water delivery pipe; 10, first gear; 11, tooth 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, sliding block; 26, second gear; 27, bidirectional screw rod; 28, servo motor; 29, first air cylinder; 30, second air cylinder; 31, first trigger switch; 32, first trigger block; 33, second trigger switch; 34, second trigger block; 35, annular protrusion; 36, annular sliding groove. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0017] Please refer to Figures 1-10 The present application is a kind of spray equipment for dust reduction in thermal power plants, which comprises: A box 1 is provided with a support assembly 2 fixedly installed thereon, and a spray gun main body 3 is installed on the support assembly 2. A group of spray nozzles 4 are arranged on the water outlet inner side of the spray gun main body 3. The spray nozzles 4 are communicated with a water delivery pipe 9. The water delivery pipe 9 is communicated with a water tank 12 through a liquid delivery assembly. The water tank 12 is fixedly installed on the box 1. A water inlet 13 is communicated with the top of the water tank 12. A water level gauge 14 is arranged in 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 position where the liquid delivery assembly is communicated with the water tank 12, and the communication position is located at the bottom of the water tank 12. A fixed column 21 is arranged 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 ascend and descend by a driving assembly. A sleeve 19 is sleeved on the outer circular surface of the fixed column 21. The sleeve 19 is rotationally connected with the fixed column 21. An annular sliding groove 36 is formed 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 rotationally installed in the annular sliding groove 36. The sleeve 19 is slidingly connected with 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 with the driving assembly. When the driving assembly drives the fixed column 21 to descend, the fixed column 21 will block the filter screen 18. A soot cleaning assembly is arranged at the water outlet of the spray gun body 3, and is used for cleaning the water outlet of the spray nozzle 4.

[0018] In one case of the embodiment, it is to be noted that the support assembly 2 of the present application includes rotating chassis, adjusting supports, connecting pieces and other components, the above components, the water level gauge 14 and the spray gun body 3 are all prior art, and the present application does not improve them, therefore, their specific mechanical structure and circuit structure do not need to be disclosed, and the integrity of the present application is not affected.

[0019] The working principle of the present application is as follows: first, water is injected into the water tank 12 through the water injection port 13, and 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 supplemented through the water injection port 13, when spraying is needed, the water in the water tank 12 is transported to the water delivery pipe 9 through the infusion assembly, and then the water is sprayed out of the spray nozzle 4 to become water mist, and then the water mist is blown up by the spray gun body 3, so that the water mist falls from top to bottom in the target area, thereby achieving the purpose of dust suppression, during which the orientation of the spray gun body 3 can be adjusted according to the needs through the support assembly 2, so as to change the landing point of the water mist, at the same time, the box body 1 can be placed on the transportation assembly, such as a guide vehicle, a cart and the like, according to the prior art, so that the box body 1 can move, thereby further expanding the range and flexibility of dust suppression. Considering the dusty environment of the thermal power plant and the working mode of the spray, the smoothness of the spray nozzle 4 is crucial to the dust suppression effect, therefore, a soot cleaning assembly is arranged at the water outlet of the spray gun body 3, which is used for cleaning the water outlet of the spray nozzle 4, in order to prevent dust from covering the water outlet of the spray nozzle 4 when the spray gun body 3 is idle, therefore, the soot cleaning assembly can clean the water outlet of the spray nozzle 4 before each spraying, to ensure that the water mist is not blocked by dust. More importantly, considering that impurities exist in the water, and these impurities are transported into the spray nozzle 4, which can cause the spray nozzle 4 to be blocked, compared with the problem of dust covering the water outlet of the spray nozzle 4, the problem of the spray nozzle 4 being blocked by impurities inside is more serious, therefore, a filter screen 18 is arranged, which can filter the water when it is transported, thereby performing a cleaning, at the same time, when the spray gun body 3 is idle, the impurities in the water will deposit at the bottom of the water tank 12, which will cause the problem of impurities accumulating on the filter screen 18, which will cause the filtering effect of the filter screen 18 to be poor and blocked over a long period of time, therefore, a sleeve 19, a stirring blade 20 and a fixing column 21 are arranged on the water tank 12, when water is pumped, the fixing column 21 is first lifted by the driving assembly, since the fixing column 21 and the sleeve 19 are connected through the annular protrusion 35 and the annular sliding groove 36, the fixing column 21 will synchronously drive the sleeve 19 to rise, at this time, the stirring blade 20 will be driven to rotate by the rotating shaft 22, and the rotating shaft 22 is connected with the sleeve 19 through the rotating shaft sleeve 23, therefore, the stirring blade 20 will rotate when the sleeve 19 rises, thereby stirring the water in the water tank 12, so that the impurities in the water tank 12 are stirred and suspended in the water, thereby preventing the impurities from depositing on the filter screen 18, and the problem of the filter screen 18 being blocked by the impurities is solved. Figure 3As 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. 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.

[0020] like Figures 1-8 As 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.

[0021] 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.

[0022] Specifically, the water tank 12 top fixed installation has with first cylinder 29 connects the second trigger block 34, the stand 22 fixed installation has with servo motor 28 connects the first trigger switch 31, the lifting frame 23 top fixed installation has first trigger block 32, the lifting frame 23 bottom fixed installation has second trigger switch 33, when the lifting frame 23 drops, first trigger block 32 and first trigger switch 31 separate, and second trigger switch 33 and second trigger block 34 connect;When the lifting frame 23 rises, second trigger switch 33 and second trigger block 34 separate, and first trigger block 32 and first trigger switch 31 connect.

[0023] Wherein, the sleeve 19 and water tank 12 top end is dynamic sealing design, play sealing effect.

[0024] In one case of the embodiment, it should be noted that the servo motor 28, first cylinder 29, first trigger switch 31 and second trigger block 34 of the application are prior art, and the application does not improve them, so their specific mechanical structure and circuit structure do not need to be disclosed, and the integrity of the application is not affected.

[0025] In actual application, the second cylinder 30 can drive the lifting frame 23 to rise and fall on the stand 22, the sliding block 25 is arranged in the lifting frame 23, and the sliding block 25 is fixedly connected with the fixed column 21, so the sliding block 25 rises and falls synchronously with the fixed column 21, so as to realize the purpose of sealing the filter screen 18 by lowering the fixed column 21 and opening the filter screen 18 by raising the fixed column 21, when the filter screen 18 is opened, the servo motor 28 is started to drive the bidirectional screw rod 27 to rotate, the bidirectional screw rod 27 drives the sliding block 25 to reciprocate in the lifting frame 23, and the sliding block 25 reciprocates to drive the second gear 26 to move synchronously, because the second gear 26 is engaged with the rack plate 24, so the second gear 26 rotates in the reciprocating movement of the sliding block 25, and the sleeve 19 rotates when the fixed column 21 moves in the water tank 12, so as to reciprocate the water in the water tank 12, expand the stirring range. More importantly, before spraying, such as Figure 8As 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. 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.

[0026] 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 water delivery pipe 9 in sequence through the filter assembly 16 and the water pump 17.

[0027] 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.

[0028] 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.

[0029] As Figures 1-10 shown, as a preferred embodiment of the present application, the ash removal assembly comprises a collar 5, a through hole 6, a jet nozzle 7 and a gas delivery pipe 8, the collar 5 is sleeved on the water outlet of the spray gun body 3, a plurality of through holes 6 are formed on the outer wall of the water outlet of the spray gun body 3, and each through hole 6 is provided with a jet nozzle 7, the jet nozzle 7 is fixedly installed on the collar 5, and the jet nozzle 7 is in communication with the gas delivery pipe 8, the gas delivery pipe 8 is in communication with a high-pressure gas delivery assembly, the gas outlet of the jet nozzle 7 faces the water outlet of the spray nozzle 4, and before the spray gun body 3 sprays, the high-pressure gas delivery assembly sprays gas through the gas delivery pipe 8 and the jet nozzle 7.

[0030] Specifically, the collar 5 is rotationally connected with the spray gun body 3, the jet nozzle 7 is slidingly connected with the through hole 6, the collar 5 is driven to rotate by a transmission assembly, when the spray gun body 3 sprays, the transmission assembly drives the collar 5 to rotate so that the gas outlet of the jet nozzle 7 is away from the water outlet of the spray nozzle 4, when the spray gun body 3 stops spraying, the transmission assembly drives the collar 5 to rotate so that the gas outlet of the jet nozzle 7 faces the water outlet of the spray nozzle 4.

[0031] Specifically, the transmission assembly comprises a first gear 10 and a tooth block 11, the first gear 10 is rotationally installed on the outer circular surface of the water outlet of the spray gun body 3, the first gear 10 is driven to rotate by a built-in driving source of the spray gun body 3, a plurality of tooth blocks 11 are fixedly installed on the inner wall of the collar 5, and the first gear 10 is engaged with the plurality of tooth blocks 11.

[0032] In one case of the present embodiment, the driving source can be selected from a servo motor, a motor and the like, and other mechanisms capable of realizing reciprocating rotary motion can also be selected, and the present embodiment is not specifically limited here. It should be noted that the high-pressure gas delivery assembly of the present application comprises a high-pressure gas delivery pipeline, a high-pressure valve, a check valve, a pressure reducing valve, a pressure monitoring assembly and the like, all of which are prior art, and the present application does not improve them. Therefore, their specific mechanical structure and circuit structure do not need to be disclosed, and the integrity of the present application is not affected.

[0033] In actual application, the high-pressure gas is delivered into each jet nozzle 7 through the gas delivery pipe 8, so that the gas sprayed by the jet nozzle 7 blows towards the spray nozzle 4, thereby blowing away the dust covering the water outlet of the spray nozzle 4, so as to ensure that the water mist is not blocked by dust when sprayed; Considering that the air outlet of the air nozzle 7 is always directed to the water outlet of the spray nozzle 4, when the spray nozzle 4 sprays, the air nozzle 7 will block the water mist. At this time, the first gear 10 is driven to rotate by the driving source, and the first gear 10 is engaged with the gear block 11, so that the first gear 10 drives the sleeve ring 5 to rotate at the water outlet of the spray gun main body 3 through the gear block 11, and the sleeve ring 5 drives the air nozzle 7 to move in the through hole 6, so that the air nozzle 7 moves away from the spray nozzle 4, avoiding blocking the water outlet of the spray nozzle 4. When the spraying is stopped and idle, the sleeve ring 5 is reversely rotated by reversely rotating the first gear 10, so that the air nozzle 7 and the spray nozzle 4 return to the aligned state, so that the spray nozzle 4 can be cleaned by air before the next spraying.

[0034] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the implementation range of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the patent coverage range of the present application.

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).

2. The spray equipment for dust suppression in thermal power plants according to claim 1, characterized in that, 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 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).

3. The spray equipment for dust suppression in thermal power plants according to claim 2, characterized in that, 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.

4. The spray equipment for dust suppression in thermal power plants according to claim 3, characterized in that, The top of the water tank (12) is fixedly installed with a second trigger block (34) connected to the first cylinder (29). The upright frame (22) is fixedly installed with a first trigger switch (31) connected to the servo motor (28). The top of the lifting frame (23) is fixedly installed with a first trigger block (32). The bottom of the lifting frame (23) is fixedly installed 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).

5. A spray device for dust suppression in thermal power plants according to claim 1, characterized in that, 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).

6. A spray device 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).

7. A spray device for dust suppression in thermal power plants according to claim 6, 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).

8. A spray device for dust suppression in thermal power plants according to claim 7, 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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