Evaporative cooling device for cooling tower

Abstract

The invention relates to the field of evaporative cooling, in particular to an evaporative cooling device for a cooling tower. The technical problem to be solved is that the heat exchange efficiency and effect of a cooling tower are poor due to the fact that current filler and a screen frame are prone to being blocked by incrustation. An evaporative cooling device for a cooling tower comprises a bottom frame, a cooling box, an access door and the like. A cooling box is installed on the bottom frame, and an access door is installed on one side of the cooling box. The two bidirectional screw rods drive the two bidirectional nuts to continuously reciprocate, the two bidirectional nuts drive the two racks to continuously reciprocate, the two racks drive the plurality of gears to continuously rotate in a reciprocating manner, and the gears drive the hollow pipe and the screen frame to continuously swing in a reciprocating manner, so that hot water can be uniformly distributed on filler in the screen frame; the phenomenon that impurities in hot water block one side of the filler due to the fact that the hot water only makes contact with one side of the filler is avoided, air permeability of the filler is improved, the effect that air and water vapor penetrate through the filler is improved, and therefore the heat exchange efficiency and effect of the hot water are improved.

Description

Technical Field

[0001] The invention relates to the field of evaporative cooling, and in particular to an evaporative cooling device for a cooling tower. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant, absorbs heat from the water and discharges it into the atmosphere to lower the water temperature. It is an evaporative heat dissipation device that uses the principles of evaporative heat dissipation, convection heat transfer, and radiation heat transfer to dissipate waste heat generated in industry or refrigeration and air conditioning to lower the water temperature.

[0003] Because hot water mostly contains calcium, magnesium ions and acid carbonate, when hot water flows through the packing and the mesh frame, the sprayed hot water will first contact one of the sides of the packing and the mesh frame for a long time, which will cause the density of scale formed on the packing and the mesh frame close to the hot water and the side away from the hot water to be inconsistent, which will cause the packing and the mesh frame close to the side where the hot water is sprayed to be blocked faster, and the formed scale will block the gaps between the packing and the grid on the mesh frame, which will lead to poor heat exchange efficiency and effect of the cooling tower. Summary of the invention

[0004] In order to overcome the shortcomings of the current fillers and mesh frames that are easily clogged by scale, thereby resulting in poor heat exchange efficiency and effect of the cooling tower, in view of the shortcomings or deficiencies of the above-mentioned prior art, the present invention provides an evaporative cooling device for a cooling tower. During the hot water spraying process, the fillers and the mesh frames can be continuously turned over to make the hot water contact with all surfaces of the fillers and the mesh frames evenly, slowing down the progress of clogging of the fillers and the mesh frames, and the fillers and the mesh frames can also be moved and scrubbed, thereby improving the effect of air and water vapor passing through the fillers and the mesh frames, thereby improving the heat exchange efficiency and effect of hot water.

[0005] The technical solution of the present invention is: an evaporative cooling device for a cooling tower, comprising a base frame, a cooling box, an inspection door, a drain pipe, a water collector, an exhaust fan, a swing mechanism, a water distribution mechanism and a driving mechanism. The cooling box is installed on the base frame, an inspection door is installed on one side of the cooling box, a drain pipe is installed at the bottom of the cooling box, the drain pipe is connected to the cooling box, a plurality of air inlets are opened on both sides of the cooling box, a water collector is installed on the top of the cooling box, an exhaust fan is installed above the cooling box, a plurality of swing mechanisms are evenly spaced in the cooling box, fillers are installed in the swing mechanism, a water distribution mechanism is provided on the cooling box, the water distribution mechanism is used to evenly distribute the liquid to be cooled, and driving mechanisms are provided on both sides outside the cooling box, the driving mechanisms are used to drive the swing mechanism to swing.

[0006] Furthermore, the swing mechanism includes a partition, a hollow tube and a mesh frame. Two partitions are installed in the cooling box. A plurality of hollow tubes are evenly spaced and rotatably arranged between two opposite sides of the cooling box. A mesh frame is installed in the middle of each hollow tube, and fillers are installed in the mesh frame.

[0007] Furthermore, the water distribution mechanism includes a water inlet pipe, a slider, a water distribution pipe and a hose. Four water inlet pipes are evenly installed on the other two opposite sides of the cooling box. Four sliders are evenly and slidably provided on both sides of the upper partition. A water distribution pipe is installed between every two sliders on different sides and located on the same straight line. A number of drainage holes are evenly spaced on the water distribution pipe. A hose is connected between each water inlet pipe and the water distribution pipe, and the water inlet pipe and the water distribution pipe are connected through the hose.

[0008] Furthermore, the driving mechanism includes a gear, a rack, a motor, a rotating shaft, a bidirectional screw and a bidirectional nut. A gear is installed at both ends of each hollow tube. The gear is located on the outside of the cooling box. A rack is slidably provided on the two opposite outer surfaces of the cooling box. The rack on the same side is meshed with several gears on the same side. A motor is installed on the two opposite outer surfaces of the cooling box. A rotating shaft is rotatably provided on the two opposite outer surfaces of the cooling box through bearings. One end of the rotating shaft on the same side is connected to the output shaft of the motor on the same side through a coupling. A bidirectional screw is installed in the middle of the two rotating shafts. A bidirectional nut is threadedly connected to the bidirectional screw, and the bidirectional nut on the same side is connected to the rack on the same side.

[0009] Furthermore, it also includes a cleaning mechanism, which is arranged on the cooling box, the hollow tube and the screen frame. The cleaning mechanism is used to clean impurities on the screen frame. The cleaning mechanism includes an electric push rod, a coupling frame, a slide, a return brush frame and a slide rod. Four electric push rods are installed on the top outside the cooling box, a coupling frame is installed between two electric push rods on the same side, two slides are slidably provided on each hollow tube, and the two slides are symmetrically arranged, a return brush frame is installed on the side where the two slides are close to each other, and the inner circles of the two return brush frames are provided with a number of cleaning bristles, and the cleaning bristles on the two return brush frames are in contact with the screen frame, and a slide rod is rotatably installed on the side where the two slides are away from each other, and each slide rod is slidably located in the hollow tube, and the ends of the several slide rods on both sides that are away from each other are respectively connected to the side where the two coupling frames are close to each other.

[0010] Furthermore, it also includes a toggle mechanism, which is arranged on the hollow tube and the slide. The toggle mechanism is used to toggle the filler in the net frame. The toggle mechanism includes a corrugated groove plate, a toggle rod and a roller. A corrugated groove plate is installed between the two slides on each hollow tube that are close to each other. A corrugated groove is opened on the two corrugated groove plates. Each hollow tube is slidably provided with a plurality of toggle rods, each toggle rod is provided with a plurality of protrusions, and each toggle rod is rotatably provided with a roller at one end close to the corrugated groove plate, and each roller is located in the corrugated groove of the corrugated groove plate.

[0011] Furthermore, it also includes a cross bar and a return spring. A cross bar is fixedly installed between every two sliders. The four cross bars slide through the two sides of the cooling box. A return spring is connected between the four cross bars and the side of the cooling box. The ends of the four cross bars that are away from each other are in contact with the sides of the two coupling frames that are close to each other.

[0012] Furthermore, it also includes a cleaning brush roller and a transmission assembly. A cleaning brush roller is rotatably provided on both sides of the lower part of the cooling box near the air inlet. A number of cleaning bristles are provided on the two cleaning brush rollers. A transmission assembly is connected between one end of the cleaning brush roller on the same side and one end of the rotating shaft on the same side.

[0013] Furthermore, each transmission assembly is composed of two pulleys and a flat belt, the two pulleys are connected to the cleaning brush roller and the rotating shaft respectively, and a flat belt is wound between the two pulleys.

[0014] The beneficial effects are: 1. Two bidirectional screws drive two bidirectional nuts to move back and forth continuously, the two bidirectional nuts drive two racks to move back and forth continuously, the two racks drive several gears to rotate back and forth continuously, and the gears drive the hollow tube and the mesh frame to swing back and forth continuously, so that the hot water can be evenly distributed on the filler in the mesh frame, avoiding hot water contacting only one side of the filler and causing impurities in the hot water to block one side of the filler, thereby improving the air permeability of the filler, and then improving the effect of air and water vapor passing through the filler, thereby improving the heat exchange efficiency and effect of hot water.

[0015] 2. The telescopic rod of the electric push rod drives the two coupling frames to move back and forth, and the reciprocating movement of the two coupling frames drives the sliding rod. The sliding frame and the return brush frame move back and forth on the screen frame. The bristles on the return brush frame can clean the impurities remaining on the screen frame, so that the screen frame will not be blocked after long-term use, and air and water vapor can pass through the screen frame smoothly, thereby further improving the heat exchange efficiency and effect of hot water.

[0016] 3. Under the action of the corrugated grooves on the corrugated groove plate, the roller can be driven to move back and forth continuously, and the roller drives the toggle rod to move back and forth continuously. The protrusion on the toggle rod will toggle the filler in the mesh frame, so that the fillers can move and rub against each other, and then the scale between the fillers can be loosened and fall off, thereby preventing impurities on the hot water from forming scale between the fillers and clogging the gaps between the fillers, so that air and water vapor can smoothly pass through the gaps between the fillers, thereby further improving the heat exchange efficiency and effect of hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the cooling box and the driving mechanism of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the cooling box, inspection door and cleaning mechanism of the present invention.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the cooling box, swing mechanism and water distribution mechanism of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the swing mechanism and the water distribution mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the disassembled three-dimensional structure of the cooling box, inspection door, drain pipe, water collector, exhaust fan and some parts of the swing mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the disassembled three-dimensional structure of the base frame, cooling box, inspection door, drain pipe, water collector, exhaust fan and some parts of the swing mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the water distribution mechanism and the driving mechanism of the present invention.

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the driving mechanism and the cleaning mechanism of the present invention.

[0025] Fig. 9 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention.

[0026] Fig.10 It is a three-dimensional structural schematic diagram of the cleaning mechanism and the toggle mechanism of the present invention.

[0027] Fig.11 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the cleaning mechanism and the toggle mechanism of the present invention.

[0028] Fig.12 It is a three-dimensional structural schematic diagram of the cooling box, rotating shaft, cleaning brush roller and transmission assembly of the present invention.

[0029] The names and serial numbers of the parts in the figure are: 1_base frame, 2_cooling box, 21_inspection door, 22_drain pipe, 23_air inlet, 24_water collector, 25_exhaust fan, 31_partition, 32_hollow pipe, 33_screen frame, 41_water inlet pipe, 42_slider, 43_water distribution pipe, 44_hose, 51_gear, 52_rack, 53_motor, 54_rotating shaft, 55_bidirectional screw rod, 56_bidirectional nut, 61_electric push rod, 62_coupling frame, 63_slide, 64_return brush holder, 65_slide rod, 71_corrugated groove plate, 72_toggle rod, 73_roller, 81_cross bar, 82_reset spring, 91_cleaning brush roller, 92_transmission assembly. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0031] Embodiment 1: An evaporative cooling device for a cooling tower, such as Figure 1-Figure 8 As shown, it includes a base frame 1, a cooling box 2, an inspection door 21, a drain pipe 22, a water collector 24, an exhaust fan 25, a swing mechanism, a water distribution mechanism and a driving mechanism. The cooling box 2 is installed on the base frame 1 by bolts, and an inspection door 21 is installed on one side of the cooling box 2 by hinges. A drain pipe 22 is installed at the bottom of the cooling box 2, and the drain pipe 22 is connected to the cooling box 2. A plurality of air inlets 23 are opened on both sides of the cooling box 2. A water collector 24 for collecting water is installed on the top of the cooling box 2, and an exhaust fan 25 for exhaust is installed above the cooling box 2. A plurality of swing mechanisms are evenly spaced in the cooling box 2, and fillers are installed in the swing mechanism. A water distribution mechanism is provided on the cooling box 2, and the water distribution mechanism is used to evenly distribute the liquid to be cooled. Driving mechanisms are provided on both sides outside the cooling box 2, and the driving mechanisms are used to drive the swing mechanism to swing.

[0032] The swing mechanism includes a partition 31, a hollow tube 32 and a mesh frame 33. Two partitions 31 are installed in the cooling box 2 by bolts. A plurality of hollow tubes 32 are evenly spaced between two opposite sides of the cooling box 2 and rotatably provided by bearings. A mesh frame 33 is installed in the middle of each hollow tube 32. The mesh frame 33 is filled with an appropriate amount of filler. The mesh frame 33 is located between the two partitions 31.

[0033] The water distribution mechanism includes a water inlet pipe 41, a slider 42, a water distribution pipe 43 and a hose 44. Four water inlet pipes 41 are evenly installed on the other two opposite sides of the cooling box 2. Four sliders 42 are evenly spaced and slidingly provided on both sides of the upper partition 31. The sliders 42 will slide along the upper partition 31. A water distribution pipe 43 for evenly distributing hot water is installed between every two sliders 42 on different sides and located on the same straight line. A number of drainage holes are evenly spaced on the water distribution pipe 43. A hose 44 is connected between each water inlet pipe 41 and the water distribution pipe 43, and the water inlet pipe 41 and the water distribution pipe 43 are connected through the hose 44.

[0034] The driving mechanism includes a gear 51, a rack 52, a motor 53, a rotating shaft 54, a bidirectional screw 55 and a bidirectional nut 56. A gear 51 is installed at both ends of each hollow tube 32. The gear 51 is located on the outside of the cooling box 2. A rack 52 is slidably provided on two opposite outer surfaces of the cooling box 2. The rack 52 will slide along the cooling box 2. The rack 52 on the same side is meshed with several gears 51 on the same side. A motor 53 is installed on two opposite outer surfaces of the cooling box 2. A rotating shaft 54 ​​is rotatably provided on two opposite outer surfaces of the cooling box 2 through bearings. One end of the rotating shaft 54 ​​on the same side is connected to the output shaft of the motor 53 on the same side through a coupling. A bidirectional screw 55 is installed in the middle of the two rotating shafts 54. A bidirectional nut 56 is threadedly connected to the bidirectional screw 55. The bidirectional nut 56 on the same side is connected to the rack 52 on the same side.

[0035] Initially, the operator puts an appropriate amount of filler into the mesh frame 33, and then connects a hot water pipe to each water inlet pipe 41, and then opens the valve of the hot water pipe. The hot water enters the water distribution pipe 43 from the hose 44 through the water inlet pipe 41 and is discharged from several drainage holes on the water distribution pipe 43 to the filler in the mesh frame 33. The hot water can be distributed on the filler in the mesh frame 33 and form a water film. The water film exchanges heat with the dry air entering from the air inlet 23, evaporates into the air and takes away heat. At the same time, the operator starts the exhaust fan 25 to extract the water vapor evaporated in the cooling box 2. After the water vapor contacts the water collector 24, the evaporated water vapor is collected by the water collector 24 to reduce water loss. The cooled water is discharged through the drain pipe 22. When the equipment fails, the operator can enter the equipment through the inspection door 21 for maintenance. During the cooling process, the hot water that needs to be cooled The hot water contains some impurities. The operator starts the output shafts of the two motors 53 to rotate. The output shafts of the two motors 53 drive the two rotating shafts 54 and the two bidirectional screws 55 to rotate. The two bidirectional screws 55 drive the two bidirectional nuts 56 to move back and forth continuously. The two bidirectional nuts 56 drive the two racks 52 to move back and forth continuously. The two racks 52 drive a number of gears 51 to rotate back and forth continuously. The gears 51 drive the hollow tube 32 and the mesh frame 33 to swing back and forth continuously, so that the hot water can be evenly distributed on the filler in the mesh frame 33, avoiding that the hot water only contacts one side of the filler and causes the impurities in the hot water to block one side of the filler, thereby improving the air permeability of the filler, and then improving the effect of air and water vapor passing through the filler, thereby improving the heat exchange efficiency and effect of the hot water. After the cooling tower is finished, the operator closes the valve of the hot water pipe, the exhaust fan 25 and the motor 53.

[0036] Embodiment 2: Based on embodiment 1, Figure 8-Figure 11 As shown, a cleaning mechanism is also included, which is arranged on the cooling box 2, the hollow tube 32 and the screen frame 33. The cleaning mechanism is used to clean impurities on the screen frame 33. The cleaning mechanism includes an electric push rod 61, a coupling frame 62, a slide 63, a return brush frame 64 and a slide rod 65. Four electric push rods 61 are installed on the top of the cooling box 2 by bolts. A coupling frame 62 is installed between the two electric push rods 61 on the same side. Two slides 63 are slidably provided on each hollow tube 32, and the two slides 63 are opposite to each other. It is said that a circular brush holder 64 for cleaning impurities on the screen frame 33 is installed on the side where the two slides 63 are close to each other, and a plurality of cleaning bristles are provided on the inner circles of the two circular brush holders 64. The cleaning bristles on the two circular brush holders 64 are in contact with the screen frame 33. A sliding rod 65 is rotatably installed on the side where the two slides 63 are away from each other. Each sliding rod 65 is slidably located in the hollow tube 32, and the ends of the plurality of sliding rods 65 on both sides away from each other are respectively connected to the side of the two connecting frames 62 close to each other.

[0037] After the screen frame 33 has been working for a period of time, impurities on the hot water will form scale on the screen frame 33, which will then block the screen frame 33, thereby reducing the air permeability and water permeability of the screen frame 33. At this time, the operator starts the telescopic rod of the electric push rod 61 to reciprocate, and the telescopic rod of the electric push rod 61 drives the two coupling frames 62 to move back and forth. The reciprocating movement of the two coupling frames 62 drives the slide bar 65, and the slide bar 63 and the return-shaped brush frame 64 move back and forth on the screen frame 33. The bristles on the return-shaped brush frame 64 can clean the impurities remaining on the screen frame 33, so that the screen frame 33 will not be blocked after being used for a long time, so that air and water vapor can smoothly pass through the screen frame 33, thereby further improving the heat exchange efficiency and effect of hot water; when the hollow tube 32 and the screen frame 33 swing, the slide bar 63 and the return-shaped brush frame 64 are driven to swing. Since the slide bar 65 is rotatably connected to the slide bar 63, the slide bar 65 will not swing with the swing of the slide bar 63 and the return-shaped brush frame 64.

[0038] Embodiment 3: Based on embodiment 2, Figure 7-Figure 12 As shown, it also includes a toggle mechanism, which is arranged on the hollow tube 32 and the slide 63. The toggle mechanism is used to toggle the filler in the net frame 33. The toggle mechanism includes a corrugated groove plate 71, a toggle rod 72 and a roller 73. A corrugated groove plate 71 is installed between the two slides 63 on each hollow tube 32 on the side close to each other. A corrugated groove is opened on the two corrugated groove plates 71. Each hollow tube 32 is slidably provided with a plurality of toggle rods 72 for toggling the filler in the net frame 33. Each toggle rod 72 is provided with a plurality of protrusions. A roller 73 is rotatably provided on the end of each toggle rod 72 close to the corrugated groove plate 71, and each roller 73 is located in the corrugated groove of the corrugated groove plate 71.

[0039] It also includes a cross bar 81 and a return spring 82. A cross bar 81 is fixedly installed between every two sliders 42. The four cross bars 81 slide through the two sides of the cooling box 2. A return spring 82 is connected between the four cross bars 81 and the side of the cooling box 2. The ends of the four cross bars 81 that are away from each other are in contact with the sides of the two connecting frames 62 that are close to each other.

[0040] It also includes a cleaning brush roller 91 and a transmission assembly 92. A cleaning brush roller 91 for cleaning the air inlet 23 is rotatably provided on both sides of the lower part of the cooling box 2 near the air inlet 23. A plurality of cleaning bristles are provided on the two cleaning brush rollers 91. A transmission assembly 92 is connected between one end of the cleaning brush roller 91 on the same side and one end of the rotating shaft 54 ​​on the same side.

[0041] Each transmission assembly 92 is composed of two pulleys and a flat belt. The two pulleys are connected to the cleaning brush roller 91 and the rotating shaft 54 ​​respectively, and a flat belt is wound between the two pulleys.

[0042] When the two slides 63 move back and forth, they drive the two corrugated groove plates 71 to move back and forth. Under the action of the corrugated grooves on the corrugated groove plates 71, the roller 73 can be driven to move back and forth continuously. The roller 73 drives the toggle rod 72 to move back and forth continuously. The protrusion on the toggle rod 72 will toggle the filler in the mesh frame 33, so that the fillers can move and rub against each other, and then the scale between the fillers can be loosened and fall off, thereby preventing impurities on the hot water from forming scale between the fillers and clogging the gaps between the fillers, so that air and water vapor can smoothly pass through the gaps between the fillers, thereby further improving the heat exchange efficiency and effect of hot water.

[0043] Initially, the two coupling frames 62 respectively support the two cross bars 81 on the same side, and the four return springs 82 are in a compressed state. With the reciprocating movement of the two coupling frames 62, when the two coupling frames 62 are separated from the two cross bars 81 on the same side, under the action of the return springs 82, the four cross bars 81 on both sides will move away from each other. When the two coupling frames 62 contact the two cross bars 81 on the same side, the two coupling frames 62 will push the four cross bars 81 on both sides to move towards each other, and the return springs 82 will be compressed accordingly. The four cross bars 81 on both sides will drive the four water distribution pipes 43 to move, thereby improving the uniformity of hot water distribution on the filler and further improving the cooling efficiency of the hot water.

[0044] When the two rotating shafts 54 rotate, the two cleaning brush rollers 91 are driven to rotate through the two transmission components 92. The cleaning bristles on the two cleaning brush rollers 91 can clean the air inlets 23 on both sides to prevent the air inlets 23 on both sides from being blocked by impurities in the air, thereby keeping the air inlets 23 unobstructed and allowing dry air to pass smoothly through the air inlets 23 on both sides.

[0045] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. An evaporative cooling device for a cooling tower, characterized in that: The invention comprises a base frame (1), a cooling box (2), an inspection door (21), a drain pipe (22), a water collector (24), an exhaust fan (25), a swing mechanism, a water distribution mechanism and a driving mechanism. The cooling box (2) is mounted on the base frame (1). A maintenance door (21) is mounted on one side of the cooling box (2). A drain pipe (22) is mounted on the bottom of the cooling box (2). The drain pipe (22) is connected to the cooling box (2). A plurality of air inlets (23) are provided on both sides of the cooling box (2). A water collector (24) is mounted on the top of the cooling box (2). An exhaust fan (25) is mounted above the cooling box (2). A plurality of swing mechanisms are evenly spaced in the cooling box (2). Fillers are mounted in the swing mechanisms. A water distribution mechanism is mounted on the cooling box (2). The water distribution mechanism is used to evenly distribute the liquid to be cooled. Driving mechanisms are mounted on both sides of the cooling box (2). The driving mechanisms are used to drive the swing mechanism to swing.

2. An evaporative cooling device for a cooling tower according to claim 1, characterized in that: The swing mechanism comprises a partition plate (31), a hollow tube (32) and a mesh frame (33). Two partition plates (31) are installed in the cooling box (2). A plurality of hollow tubes (32) are evenly spaced and rotatably arranged between two opposite side surfaces of the cooling box (2). A mesh frame (33) is installed in the middle of each hollow tube (32), and a filler is filled in the mesh frame (33).

3. An evaporative cooling device for a cooling tower as claimed in claim 2, characterized in that: The water distribution mechanism comprises a water inlet pipe (41), a slider (42), a water distribution pipe (43) and a hose (44). Four water inlet pipes (41) are evenly spaced apart on the other two opposite sides of the cooling box (2). Four sliders (42) are evenly spaced apart and slidably provided on both sides of the upper partition (31). A water distribution pipe (43) is installed between each two sliders (42) on different sides and located on the same straight line. A plurality of drainage holes are evenly spaced apart on the water distribution pipe (43). A hose (44) is connected between each water inlet pipe (41) and the water distribution pipe (43). The water inlet pipe (41) and the water distribution pipe (43) are connected via the hose (44).

4. An evaporative cooling device for a cooling tower as claimed in claim 3, characterized in that: The driving mechanism comprises a gear (51), a rack (52), a motor (53), a rotating shaft (54), a bidirectional screw rod (55) and a bidirectional nut (56). A gear (51) is installed at both ends of each hollow tube (32). The gear (51) is located outside the cooling box (2). A rack (52) is slidably provided on two opposite outer surfaces of the cooling box (2). The rack (52) on the same side meshes with a plurality of gears (51) on the same side. A motor (53) is installed on two opposite outer surfaces of the cooling box (2). A rotating shaft (54) is rotatably provided on two opposite outer surfaces of the cooling box (2) via a bearing. One end of the rotating shaft (54) on the same side is connected to the output shaft of the motor (53) on the same side via a coupling. A bidirectional screw rod (55) is installed in the middle of the two rotating shafts (54). A bidirectional nut (56) is threadedly connected to the bidirectional screw rod (55). The bidirectional nut (56) on the same side is connected to the rack (52) on the same side.

5. An evaporative cooling device for a cooling tower as claimed in claim 4, characterized in that: The cleaning device also includes a cleaning mechanism, which is arranged on the cooling box (2), the hollow tube (32) and the screen frame (33). The cleaning mechanism is used to clean impurities on the screen frame (33). The cleaning mechanism includes an electric push rod (61), a coupling frame (62), a slide frame (63), a return brush frame (64) and a slide rod (65). Four electric push rods (61) are installed on the top of the cooling box (2). A coupling frame (62) is installed between two electric push rods (61) on the same side. Two slide frames (63) are slidably arranged on each hollow tube (32). The two slide frames (63) are connected to the cooling box (2). The frames (63) are symmetrically arranged, and a return brush frame (64) is installed on the side where the two slides (63) are close to each other. The inner circles of the two return brush frames (64) are provided with a plurality of cleaning bristles. The cleaning bristles on the two return brush frames (64) are in contact with the mesh frame (33). A sliding rod (65) is rotatably installed on the side where the two slides (63) are away from each other. Each sliding rod (65) is slidably located in the hollow tube (32), and the ends of the plurality of sliding rods (65) on both sides that are away from each other are respectively connected to the sides of the two coupling frames (62) that are close to each other.

6. An evaporative cooling device for a cooling tower as claimed in claim 5, characterized in that: The invention also comprises a toggle mechanism, which is arranged on the hollow tube (32) and the slide (63) and is used to toggle the filler in the net frame (33). The toggle mechanism comprises a corrugated groove plate (71), a toggle rod (72) and a roller (73). A corrugated groove plate (71) is installed between the two slides (63) on each hollow tube (32) on the sides close to each other. A corrugated groove is formed on each of the two corrugated groove plates (71). A plurality of toggle rods (72) are slidably arranged on each hollow tube (32), and each toggle rod (72) is provided with a plurality of protrusions. A roller (73) is rotatably arranged on one end of each toggle rod (72) close to the corrugated groove plate (71), and each roller (73) is located in the corrugated groove of the corrugated groove plate (71).

7. An evaporative cooling device for a cooling tower as claimed in claim 6, characterized in that: It also includes a cross bar (81) and a return spring (82), wherein a cross bar (81) is fixedly installed between every two sliders (42), and the four cross bars (81) are slidably passed through the two sides of the cooling box (2), and a return spring (82) is connected between the four cross bars (81) and the side of the cooling box (2), and the ends of the four cross bars (81) that are away from each other are in contact with the sides of the two coupling frames (62) that are close to each other.

8. An evaporative cooling device for a cooling tower as claimed in claim 7, characterized in that: It also includes a cleaning brush roller (91) and a transmission assembly (92). A cleaning brush roller (91) is rotatably provided on both sides of the lower part of the cooling box (2) near the air inlet (23). Both cleaning brush rollers (91) are provided with a plurality of cleaning bristles. A transmission assembly (92) is connected between one end of the cleaning brush roller (91) on the same side and one end of the rotating shaft (54) on the same side.

9. An evaporative cooling device for a cooling tower as claimed in claim 8, characterized in that: Each transmission assembly (92) is composed of two pulleys and a flat belt. The two pulleys are respectively connected to the cleaning brush roller (91) and the rotating shaft (54), and a flat belt is wound between the two pulleys.

Images