A spray device for a closed cooling tower

Abstract

The present invention belongs to the technical field of cooling towers, and specifically is a spray device of a closed cooling tower, comprising a cooling tower body, a plurality of air outlets are arranged at the top of the cooling tower body, exhaust fans are installed inside the air outlets, air inlets are arranged at both ends of the cooling tower body, a cooling pipe is installed in the middle of the cooling tower body, a water pump is installed at the bottom end of one side of the cooling tower body, a water delivery pipe is installed at the water outlet end of the water pump, a plurality of water guide pipes are fixed at the top end of the water delivery pipe, a plurality of water spray heads are installed at equal intervals at the bottom end of the water guide pipe, a cleaning structure for cleaning dirt is installed inside the water guide pipe; the scraper is driven by the rotation of the rotating column to scrape off impurities and algae on the inner surface of the water guide pipe, and the top block is flipped to drive the moving column to rise and fall inside the water spray head, and during the lifting process, the moving column drives the scraper to scrape and clean the inner wall of the water spray head, so that the water guide pipe and the water spray head can be cleaned during operation.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling towers, in particular to a spray device of a closed cooling tower. Background Art

[0002] A closed cooling tower is a highly efficient heat exchange device, which is mostly used in industrial production, commercial buildings and other fields. It realizes heat exchange by cooling the circulating medium. The external medium is input into the closed cooling tower through the cooling pipe. The cooling pipe evaporates the heat of the medium and uses a spray device to spray water mist on the cooling pipe to accelerate the volatilization of heat in the cooling pipe, thereby cooling the medium.

[0003] A patent application with the existing publication number CN116399159A discloses a spray device for a closed cooling tower, which sprays in multiple directions, avoiding the situation where the spray is not uniform due to fixed spraying of the nozzle, and improving the heat dissipation effect of the contact between the cooling water and the elbow.

[0004] When the above technical solution is in use, if the nozzle is blocked, it is necessary to solve the blockage problem by switching to a different nozzle. During the switching process, the nozzle cannot continue to spray. At this time, the cooling tower needs to be stopped and the inside of the nozzle will be cleaned by a brush roller. The brush roller may brush the blocked dirt into the inside of the nozzle, causing more serious blockage, and the inside of the nozzle cannot be cleaned, affecting the use effect of the nozzle.

[0005] To this end, the present invention provides a spray device for a closed cooling tower. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a spray device of a closed cooling tower described in the present invention comprises a cooling tower body, a plurality of air outlets are arranged at the top of the cooling tower body, an exhaust fan is installed inside the air outlets, air inlets are arranged at both ends of the cooling tower body, a cooling pipe is installed in the middle of the cooling tower body, the liquid inlet and liquid outlet ends of the cooling pipe are fixed with liquid inlets, a water pump is installed at the bottom end of one side of the cooling tower body, the water inlet end of the water pump is connected with the cooling tower body, a water pipe is installed at the water outlet end of the water pump, a water pressure detector is installed in the middle of the water pipe, a plurality of water pipes are fixed at the top of the water pipe, a plurality of water spray heads are installed at equal intervals at the bottom end of the water pipe, a cleaning structure for cleaning dirt is installed inside the water pipe; the cleaning structure comprises a rotating column arranged inside the water pipe, a plurality of scrapers are arranged on the outer side of the rotating column, and a rotating component is arranged at the end of the rotating column away from the water pipe.

[0008] Preferably, the rotating assembly includes a second motor installed on the side of the cooling tower body away from the water pump, a pulley is fixed to the end of the rotating shaft of the second motor, a transmission rod is fixed to the end of the rotating column close to the second motor, the transmission rod passes through the side wall of the cooling tower body and extends to the outside of the cooling tower body, a pulley is also fixed to the end of the transmission rod, the pulley of the second motor is connected to the pulleys at the ends of multiple transmission rods by belts, a sealing baffle is installed at the end of the water pipe away from the water supply pipe, and the transmission rod is rotatably connected to the sealing baffle.

[0009] Preferably, a connecting rod is rotatably connected to the middle part of the rotating column, a movable cavity is opened inside the rotating column, a moving ball is arranged inside the movable cavity, the moving ball is fixed on the outside of the connecting rod, a telescopic plate is fixed to the end of the scraper close to the moving ball, a chamfered surface is arranged on the side of the telescopic plate close to the moving ball, a slider is fixed to the side of the telescopic plate away from the chamfered surface, a guide groove is opened inside the rotating column, and the slider forms a sliding structure inside the guide groove.

[0010] Preferably, a movable frame is fixed to one end of the connecting rod close to the second motor, an electric telescopic rod is fixed between the movable frame and the cooling tower body, and a pressure sensor is fixed to the end of the electric telescopic rod.

[0011] Preferably, a tension spring is fixed between the scraper and the rotating column, and a receiving groove matching the scraper is provided on the outer side of the rotating column.

[0012] Preferably, a top block is fixed between the rotating columns, a moving column is arranged below the top block, a scraper is arranged on the outer side of the moving column, and a cleaning component is arranged below the moving column.

[0013] Preferably, the cleaning component includes a guide hole opened inside the movable column, the inner wall of the guide hole is opened with a spiral groove, a guide column is provided at the bottom end of the movable column, the bottom end of the guide column is fixedly connected to the bottom end inside the water spray head, and a protrusion is fixed at the top end of one side of the guide column, and the protrusion is slidably connected to the inside of the spiral groove.

[0014] Preferably, the top and bottom ends of the scraper blade near one end of the moving column are rotatably connected to hinge blocks, a coil spring is fixed inside the hinge block, the inner side of the coil spring is fixedly connected to the rotating shaft of the scraper blade, a turntable is fixed to the rotating shaft at the top of the scraper blade, a push column is fixed to the top of the turntable, an elastic push plate is inserted into the inside of the moving column, one end of the elastic push plate is set at the top of the turntable, and the other end of the elastic push plate extends to the inside of the guide hole.

[0015] Preferably, a mesh belt is provided inside the cooling tower body, the mesh belt is provided below the cooling pipe, two support rollers are provided inside the mesh belt, and both ends of the support rollers are rotatably connected to the cooling tower body.

[0016] Preferably, a slag collecting box is fixed on one side of the cooling tower body, and an opening is provided at the top of the slag collecting box close to the cooling tower body, the opening is connected to the cooling tower body, one side of the mesh belt extends to the interior of the slag collecting box through the opening, and a rotating roller is provided inside the mesh belt close to one end of the slag collecting box, a first motor is installed at one end of the slag collecting box, a rotating shaft of the first motor is fixedly connected to the rotating roller, a spring plate is fixed to the outside of the rotating roller, a baffle rod is provided on one side of the rotating roller, and the baffle rod is fixedly connected to the slag collecting box.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The spray device of a closed cooling tower described in the present invention can scrape impurities and algae on the inner surface of the water pipe by rotating the rotating column to drive the scraper, and at the same time drive the top block to flip and drive the moving column to rise and fall inside the water spray head. During the lifting process, the moving column drives the scraper to scrape and clean the inner wall of the water spray head, so that the water pipe and the water spray head can be cleaned during operation.

[0019] 2. The spray device of a closed cooling tower described in the present invention can filter out impurities and algae sprayed from the water nozzle through the mesh belt, thereby preventing the impurities and algae from returning to the inside of the water pipe and causing blockage of the water nozzle. At the same time, the impurities and algae are collected in the slag collecting box through the rolling of the mesh belt, which is convenient for subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention;

[0023] Figure 3 It is a schematic diagram of the water pipe structure in the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the water pipe in the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the rotating column in the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the mobile column in the present invention;

[0027] Figure 7 It is a schematic diagram of the scraper structure in the present invention;

[0028] Figure 8 yes Figure 2 A partial enlarged view of point A in the middle.

[0029] In the figure: 1. cooling tower body; 11. exhaust fan; 12. air inlet; 2. water pump; 21. water pipe; 22. water pressure detector; 23. water pipe; 231. water spray head; 3. cooling pipe; 31. liquid inlet; 4. mesh belt; 41. slag collecting box; 42. support roller; 43. rotating roller; 431. spring plate; 44. stop rod; 45. first motor; 5. second motor; 51. electric telescopic rod; 52. sealing baffle; 53. rotating column; 53 1. Scraper; 532. Movable cavity; 533. Telescopic plate; 534. Sliding block; 535. Guide groove; 536. Tension spring; 54. Connecting rod; 541. Moving frame; 542. Moving ball; 55. Moving column; 551. Scraper; 552. Guide hole; 553. Spiral slide groove; 554. Guide column; 555. Bump; 556. Spring; 56. Articulated block; 561. Coil spring; 562. Turntable; 563. Elastic push plate; 57. Top block. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 4 As shown, a spray device of a closed cooling tower described in an embodiment of the present invention comprises a cooling tower body 1, a plurality of air outlets are arranged at the top of the cooling tower body 1, an exhaust fan 11 is installed inside the air outlets, air inlets 12 are arranged at both ends of the cooling tower body 1, a cooling pipe 3 is installed in the middle of the cooling tower body 1, a liquid inlet 31 is fixed at the liquid inlet and liquid outlet ends of the cooling pipe 3, a water pump 2 is installed at the bottom end of one side of the cooling tower body 1, and the water inlet end of the water pump 2 is connected to the cooling tower body 1 A water pipe 21 is installed at the water outlet of the water pump 2, a water pressure detector 22 is installed in the middle of the water pipe 21, a plurality of water pipes 23 are fixed at the top of the water pipe 21, a plurality of water spray heads 231 are installed at equal intervals at the bottom of the water pipe 23, and a cleaning structure for cleaning dirt is installed inside the water pipe 23; the cleaning structure includes a rotating column 53 arranged inside the water pipe 23, a plurality of scrapers 531 are arranged on the outside of the rotating column 53, and a rotating component is arranged at one end of the rotating column 53 away from the water pipe 21;

[0032] During the use of the closed cooling tower, the external medium will be input into the interior of the cooling pipe 3 through the liquid inlet 31. After the medium flows into the interior of the cooling pipe 3, the cooling pipe 3 absorbs the heat of the medium and evaporates it. At this time, the exhaust fan 11 rotates inside the air outlet to extract the air inside the cooling tower body 1 to the outside. In the process of extracting air, the heat on the surface of the cooling pipe 3 can be taken away. At the same time, the air inlet 12 will cooperate to take in air. At the same time, in order to increase the volatilization of the heat of the cooling pipe 3, the water pump 2 is started to pump water from the interior of the cooling tower body 1. The water pump 2 inputs water into the interior of the water guide pipe 23 through the water supply pipe 21. The water guide pipe 23 sprays water mist through the water spray head 231. The water mist contacts the surface of the cooling pipe 3 and evaporates to take away the heat of the cooling pipe 3, thereby increasing the cooling efficiency of the cooling pipe 3. The water in the cooling tower body 1 will be heated during circulation. If it is used for a long time Algae are easy to grow in the used water, and the water consumed by evaporation will be supplemented inside the cooling tower body 1 during use. The water may contain fine impurities. Algae and impurities are easy to adhere to the inner wall of the water pipe 23 during use. Long-term accumulation will cause the inner diameter of the water pipe 23 to become smaller or even blocked. At this time, the water flow cannot be output, affecting the cooling effect. When the water pipe 23 is blocked, the water pressure detected by the water pressure detector 22 will rise. At this time, the rotating assembly is started to drive the rotating column 53 to rotate. After the rotating column 53 rotates, it drives the scraper 531 to scrape the inner wall of the water pipe 23. At this time, the scraper 531 can scrape off the impurities and algae attached to the inner wall of the water pipe 23 and spray them out through the sprinkler head 231. This method of cleaning the inside of the water pipe 23 can be carried out while the water pipe 23 outputs the water flow, and will not affect the cooling process.

[0033] like Figures 1 to 3 As shown, the rotating assembly includes a second motor 5 installed on the side of the cooling tower body 1 away from the water pump 2, a pulley is fixed to the end of the rotating shaft of the second motor 5, a transmission rod is fixed to one end of the rotating column 53 close to the second motor 5, the transmission rod passes through the side wall of the cooling tower body 1 and extends to the outside of the cooling tower body 1, and a pulley is also fixed to the end of the transmission rod, the pulley of the second motor 5 is connected to the pulleys at the ends of the multiple transmission rods through a belt, and a sealing baffle 52 is installed at one end of the water guide pipe 23 away from the water delivery pipe 21, and the transmission rod is rotatably connected to the sealing baffle 52;

[0034] When the rotating component is running, the water pressure detector 22 detects that the pressure value is greater than the preset range and starts the second motor 5 to rotate. The second motor 5 drives the belt to rotate through the pulley at the end, and the belt drives the pulley at the end of the transmission rod to rotate. At this time, the pulley drives the rotating column 53 to rotate through the transmission rod. The rotating column 53 drives the scraper 531 to clean the inside of the water pipe 23. The sealing baffle 52 supports one end of the transmission rod and seals one end of the water pipe 23.

[0035] like Figures 1 to 5As shown, the middle part of the rotating column 53 is rotatably connected with the connecting rod 54, the rotating column 53 is provided with an active cavity 532, the active cavity 532 is provided with a moving ball 542, the moving ball 542 is fixed to the outside of the connecting rod 54, the end of the scraper 531 close to the moving ball 542 is fixed with a telescopic plate 533, the side of the telescopic plate 533 close to the moving ball 542 is provided with an inclined surface, the side of the telescopic plate 533 away from the inclined surface is fixed with a slider 534, the rotating column 53 is provided with a guide groove 535, and the slider 534 forms a sliding structure inside the guide groove 535;

[0036] When the scraper 531 is scraping the inner wall of the water pipe 23, the scraper 531 needs to be close to the inside of the water pipe 23. In the initial state, the moving ball 542 is in a position away from the telescopic plate 533 inside the active cavity 532. At this time, the moving ball 542 is pushed to move inside the active cavity 532 by the connecting rod 54. After the moving ball 542 contacts the telescopic plate 533, the telescopic plate 533 is pushed downward by the slope of the telescopic plate 533. At this time, the telescopic plate 533 pushes the scraper 531 downward. After being pushed, the scraper 531 is close to the inner wall of the water pipe 23. At this time, the scraper 531 can have a better scraping effect on the inner wall of the water pipe 23. The slider 534 slides inside the guide groove 535 to limit and guide the telescopic plate 533.

[0037] like Figures 1 to 5 As shown, a moving frame 541 is fixed to one end of the connecting rod 54 close to the second motor 5, an electric telescopic rod 51 is fixed between the moving frame 541 and the cooling tower body 1, and a pressure sensor is fixed to the end of the electric telescopic rod 51;

[0038] During the movement of the connecting rod 54, the electric telescopic rod 51 pulls the moving frame 541 to move, and the moving frame 541 drives the connecting rod 54 to move. Because the scraper 531 will wear out when scraping the water pipe 23, the distance between the scraper 531 and the inner wall of the water pipe 23 will increase after long-term use, resulting in failure to cleanly scrape away impurities and algae. Therefore, it is necessary to adjust the position of the scraper 531. When the connecting rod 54 drives the moving ball 542 to push the telescopic plate 533, the scraper 531 contacts the inner wall of the water pipe 23 and feeds back a force to the moving ball 542 through the telescopic plate 533. At this time, the pressure sensor at the end of the electric telescopic rod 51 can detect the pressure change through the conduction of the connecting rod 54 and the moving frame 541. When the pressure reaches the preset standard value, the operation of the electric telescopic rod 51 is stopped. In this way, the electric telescopic rod 51 can automatically adjust the moving distance of the connecting rod 54 according to the distance between the scraper 531 and the water pipe 23, so as to achieve a better cleaning effect.

[0039] like Figures 1 to 5 As shown, a tension spring 536 is fixed between the scraper 531 and the rotating column 53, and a receiving groove matching the scraper 531 is opened on the outer side of the rotating column 53;

[0040] After cleaning the inside of the water pipe 23, the scraper 531 will affect the water flow inside the water pipe 23, and algae are also likely to grow on the surface of the scraper 531, so it needs to be stored after use. At this time, the electric telescopic rod 51 is started to drive the connecting rod 54 through the moving frame 541, and the connecting rod 54 pulls the moving ball 542 to restore the original position. At this time, the scraper 531 moves into the storage groove of the rotating column 53 under the tension of the tension spring 536. At this time, the scraper 531 can be stored, which can prevent the scraper 531 from affecting the flow of water inside the water pipe 23.

[0041] like Figures 4 to 6 As shown, a top block 57 is fixed between the rotating columns 53, a moving column 55 is arranged below the top block 57, a scraper 551 is arranged on the outer side of the moving column 55, and a cleaning component is arranged below the moving column 55;

[0042] When there are impurities and algae inside the water pipe 23, there will also be impurities and algae inside the water spray head 231. Therefore, the inside of the water spray head 231 also needs to be cleaned. During the rotation of the rotating column 53, the top block 57 will be driven to flip. When the top block 57 flips, it will push the moving column 55 downward. The moving column 55 can rotate during the descent process through the cleaning component. When the moving column 55 rotates, it drives the scraper 551 to rotate. The scraper 551 can scrape off the impurities and algae on the inner wall of the water spray head 231, which can solve the problem of blockage inside the water spray head 231.

[0043] like Figures 4 to 6 As shown, the cleaning assembly includes a guide hole 552 opened inside the moving column 55, and the inner wall of the guide hole 552 is provided with a spiral groove 553. The bottom end of the moving column 55 is provided with a guide column 554, and the bottom end of the guide column 554 is fixedly connected to the bottom end of the inside of the water spray head 231. A protrusion 555 is fixed to the top end of one side of the guide column 554, and the protrusion 555 is slidably connected to the inside of the spiral groove 553.

[0044] When the movable column 55 is pressed down, the guide column 554 will extend into the guide hole 552. At this time, the protrusion 555 slides inside the spiral groove 553, so that the movable column 55 can rotate during the descent. At the same time, the spring 556 at the bottom of the movable column 55 will be squeezed downward. When the top block 57 pushes the movable column 55 to move to the bottom of the water spray head 231, the top block 57 continues to flip over. At this time, the spring 556 pushes the movable column 55 to make it flip in the opposite direction and reset, so as to achieve automatic reset and clean the inside of the water spray head 231 again.

[0045] like Figure 6 to Figure 7As shown, the top and bottom ends of the scraper blade 551 near one end of the moving column 55 are both rotatably connected with a hinge block 56, a coil spring 561 is fixed inside the hinge block 56, the inner side of the coil spring 561 is fixedly connected to the rotating shaft of the scraper blade 551, a rotating disk 562 is fixed to the rotating shaft at the top of the scraper blade 551, a push column is fixed to the top of the rotating disk 562, an elastic push plate 563 is inserted into the moving column 55, one end of the elastic push plate 563 is set at the top of the rotating disk 562, and the other end of the elastic push plate 563 extends to the inside of the guide hole 552;

[0046] The scraper 551 will also wear out when in use, so it is necessary to automatically compensate for the increased distance between the scraper 551 and the inner wall of the water spray head 231 after wear. In the initial state, the coil spring 561 will drive the scraper 551 to be close to the outer side of the movable column 55. When the guide hole 552 moves downward, the guide column 554 extends into the guide hole 552. When the guide column 554 extends, the top end will push the elastic push plate 563. After being pushed, the elastic push plate 563 will extend outward. At this time, the elastic push plate 563 will push the turntable The push column at the top of 562 will drive the turntable 562 to rotate after being pushed, and the turntable 562 will drive the scraper 551 to rotate and close to the inner wall of the water spray head 231. After the scraper 551 is close to the inner wall of the water spray head 231, the turntable 562 and its push column will be fixed in position, and the guide column 554 pushes the elastic push plate 563 to move a fixed distance, so the elastic push plate 563 will automatically bend the excess length due to its elasticity, so that the distance between the scraper 551 and the inner wall of the water spray head 231 can be automatically adjusted.

[0047] like Figures 1 to 8 As shown, a mesh belt 4 is arranged inside the cooling tower body 1, and the mesh belt 4 is arranged below the cooling pipe 3. Two supporting rollers 42 are arranged inside the mesh belt 4, and both ends of the supporting rollers 42 are rotatably connected to the cooling tower body 1;

[0048] After the water spray head 231 flushes out the impurities and algae, the impurities and algae will flow with the water to the bottom of the cooling tower body 1. In order to prevent the impurities and algae from falling into the water at the bottom of the cooling tower body 1, a mesh belt 4 is provided to filter them. The support roller 42 can support the mesh belt 4 inside the cooling tower body 1, thereby preventing impurities and algae from entering the water inside the cooling tower body 1 and affecting subsequent spraying.

[0049] like Figures 1 to 8As shown, a slag collecting box 41 is fixed to one side of the cooling tower body 1, and an opening is provided at the top of the slag collecting box 41 near the cooling tower body 1, and the opening is connected to the cooling tower body 1, and one side of the mesh belt 4 extends to the inside of the slag collecting box 41 through the opening, and a rotating roller 43 is provided inside the mesh belt 4 near one end of the slag collecting box 41, and a first motor 45 is installed at one end of the slag collecting box 41, and the rotating shaft of the first motor 45 is fixedly connected to the rotating roller 43, and a spring plate 431 is fixed to the outside of the rotating roller 43, and a blocking rod 44 is provided on one side of the rotating roller 43, and the blocking rod 44 is fixedly connected to the slag collecting box 41;

[0050] When the mesh belt 4 is filtering, in order to prevent impurities and algae from being blocked, the first motor 45 is started to drive the rotating roller 43 to rotate. The rotating roller 43 drives the mesh belt 4 to roll through the spring plate 431. When the mesh belt 4 rolls, the impurities and algae can be transported to the inside of the slag collecting box 41. When the spring plate 431 rotates, it will pass through the baffle rod 44. The baffle rod 44 limits the spring plate 431 so that the spring plate 431 is bent. When the spring plate 431 passes the baffle rod 44, it will bounce toward the mesh belt 4. At this time, the impurities and algae on the surface of the mesh belt 4 will be bounced up and separated from the surface of the mesh belt 4, which can prevent the impurities and algae from adhering to the surface of the mesh belt 4 and re-entering the water.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spray device for a closed cooling tower, characterized in that: The cooling tower comprises a cooling tower body (1), wherein a plurality of air outlets are arranged at the top of the cooling tower body (1), an exhaust fan (11) is installed inside the air outlets, air inlets (12) are arranged at both ends of the cooling tower body (1), a cooling pipe (3) is installed in the middle of the cooling tower body (1), and the liquid inlet and liquid outlet ends of the cooling pipe (3) are both fixed with liquid inlets (31), a water pump (2) is installed at the bottom end of one side of the cooling tower body (1), the water inlet end of the water pump (2) is connected to the cooling tower body (1), a water delivery pipe (21) is installed at the water outlet end of the water pump (2), a water pressure detector (22) is installed in the middle of the water delivery pipe (21), a plurality of water guide pipes (23) are fixed at the top of the water guide pipe (21), a plurality of water spray heads (231) are installed at equal intervals at the bottom end of the water guide pipe (23), and a cleaning structure for cleaning dirt is installed inside the water guide pipe (23); The cleaning structure comprises a rotating column (53) arranged inside the water pipe (23), a plurality of scrapers (531) are arranged outside the rotating column (53), and a rotating assembly is arranged at one end of the rotating column (53) away from the water pipe (21); The rotating assembly comprises a second motor (5) installed on a side of the cooling tower body (1) away from the water pump (2), a pulley being fixed to the end of the rotating shaft of the second motor (5), a transmission rod being fixed to one end of the rotating column (53) close to the second motor (5), the transmission rod passing through the side wall of the cooling tower body (1) and extending to the outside of the cooling tower body (1), a pulley being also fixed to the end of the transmission rod, the pulley of the second motor (5) being connected to the pulleys at the ends of the plurality of transmission rods via belts, a sealing baffle (52) being installed to one end of the water guide pipe (23) away from the water delivery pipe (21), and the transmission rod being rotationally connected to the sealing baffle (52); A top block (57) is fixed between the rotating columns (53), a moving column (55) is arranged below the top block (57), a scraper (551) is arranged on the outside of the moving column (55), and a cleaning component is arranged below the moving column (55); The cleaning component comprises a guide hole (552) provided inside the movable column (55), a spiral groove (553) provided on the inner side wall of the guide hole (552), a guide column (554) provided at the bottom end of the movable column (55), the bottom end of the guide column (554) being fixedly connected to the bottom end inside the water spray head (231), a protrusion (555) being fixedly connected to the top end of one side of the guide column (554), and the protrusion (555) being slidably connected inside the spiral groove (553); A mesh belt (4) is arranged inside the cooling tower body (1), the mesh belt (4) is arranged below the cooling pipe (3), two support rollers (42) are arranged inside the mesh belt (4), and both ends of the support rollers (42) are rotatably connected to the cooling tower body (1); A slag collecting box (41) is fixed to one side of the cooling tower body (1); an opening is provided at the top of the slag collecting box (41) close to the cooling tower body (1); the opening is connected to the cooling tower body (1); one side of the mesh belt (4) extends to the inside of the slag collecting box (41) through the opening; a rotating roller (43) is provided inside one end of the mesh belt (4) close to the slag collecting box (41); a first motor (45) is installed at one end of the slag collecting box (41); a rotating shaft of the first motor (45) is fixedly connected to the rotating roller (43); a spring plate (431) is fixed to the outside of the rotating roller (43); a stop rod (44) is provided on one side of the rotating roller (43); the stop rod (44) is fixedly connected to the slag collecting box (41); The middle part of the rotating column (53) is rotatably connected to a connecting rod (54), a movable cavity (532) is provided inside the rotating column (53), a moving ball (542) is provided inside the moving cavity (532), and the moving ball (542) is fixed to the outside of the connecting rod (54), a telescopic plate (533) is fixed to one end of the scraper (531) close to the moving ball (542), a chamfered surface is provided on one side of the telescopic plate (533) close to the moving ball (542), a sliding block (534) is fixed to one side of the telescopic plate (533) away from the chamfered surface, a guide groove (535) is provided inside the rotating column (53), and the sliding block (534) forms a sliding structure inside the guide groove (535).

2. The spray device of a closed cooling tower according to claim 1, characterized in that: A movable frame (541) is fixed to one end of the connecting rod (54) close to the second motor (5), an electric telescopic rod (51) is fixed between the movable frame (541) and the cooling tower body (1), and a pressure sensor is fixed to the end of the electric telescopic rod (51).

3. The spray device of a closed cooling tower according to claim 2, characterized in that: A tension spring (536) is fixed between the scraper (531) and the rotating column (53), and a receiving groove matching the scraper (531) is provided on the outer side of the rotating column (53).

4. The spray device of a closed cooling tower according to claim 1, characterized in that: The top and bottom ends of the scraper (551) close to one end of the moving column (55) are rotatably connected to a hinge block (56), a coil spring (561) is fixed inside the hinge block (56), the inner side of the coil spring (561) is fixedly connected to the rotating shaft of the scraper (551), a rotating disk (562) is fixed to the rotating shaft at the top of the scraper (551), a push column is fixed to the top of the rotating disk (562), an elastic push plate (563) is inserted into the interior of the moving column (55), one end of the elastic push plate (563) is arranged at the top of the rotating disk (562), and the other end of the elastic push plate (563) extends to the inside of the guide hole (552).

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