Cooling fan based on steel cooling

Abstract

The invention belongs to the technical field of cooling fans, and particularly relates to a steel cooling-based cooling fan which comprises a base, a rotating assembly and a cooling air duct mounted at the top of the rotating assembly, the rotating assembly is mounted at the top of the base, a motor is fixedly mounted on the side of the cooling air duct, and fan blades are fixedly connected to the output end of the motor. The cooling air duct comprises an acceleration pipeline and a flow guide air duct fixedly connected to one side of the acceleration pipeline. Through cooperation between the rotating assembly and the water curtain assembly, by adjusting the area of airflow passing through the surface of steel and increasing the contact area between external air and the water curtain assembly, the steel cooling device can be suitable for wide steel or steel needing to be fully cooled so as to meet the cooling requirements of different steel; and the cooling effect on the steel is improved, so that the adaptability of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling fans, and in particular relates to a cooling fan for cooling steel. Background Art

[0002] The cooling fan is mainly used to cool down the equipment. Unlike conventional fans, its working position is more concentrated. In the production and manufacturing process of steel, in order to avoid the rapid cooling affecting the hardness and other physical properties of the steel, cooling fans are usually used to cool the high-temperature steel.

[0003] After searching, a Chinese patent with publication number CN105443417B discloses a compound cooling fan, including a cylindrical wind tube with openings at both ends, an oblique flow impeller, a motor and an axial flow impeller arranged in sequence from the axial front end to the rear end in the wind tube, a motor mounting seat arranged in the wind tube for supporting the motor, and a terminal box arranged on the outside of the wind tube; the wind tube includes a coaxially arranged outer wind tube, an inner wind tube, a collector and a guide vane, the inner wind tube is arranged in the outer wind tube, and an annular gas flow channel is formed between the cylinder walls of the two, the guide vane is radially distributed in the gas flow channel and fixedly connected to the two, and the collector is arranged at the axial front end of the outer wind tube and fixedly connected to its inner wall through an inner flange.

[0004] However, the above cooling fan is limited by the power variation range of the fan, and the variation range of the cooling speed of the steel is also small when blowing air to the steel. In actual use, due to the changes in factors such as the thickness, width and material density of the steel, the cooling speed of different types of steel is different. Using the same cooling fan may extend or shorten the cooling time of the steel. The shortened cooling time of the steel may affect the physical and chemical properties of the steel; the extended cooling time increases the production cost. Summary of the invention

[0005] The object of the present invention is to provide a cooling fan for cooling steel materials to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A cooling fan for cooling steel materials, comprising a base, a rotating assembly and a cooling air duct mounted on the top of the rotating assembly, wherein the rotating assembly is mounted on the top of the base, a motor is fixedly mounted on the side of the cooling air duct, a fan blade is fixedly connected to the output end of the motor, and the cooling air duct comprises an accelerating pipe and a guide air duct fixedly connected to one side of the accelerating pipe;

[0008] The guide air duct is rotatably installed on the top of the rotating component, the fan blades are located in the acceleration duct and the air blown by the fan blades is directed toward the guide air duct, a plurality of arc-shaped bosses are fixedly installed on the top of the bottom plate of the guide air duct, the guide air duct has two connecting plates respectively located above and below and a guide plate serving as a side plate, the openings on both sides of the guide air duct are of different sizes, and the large opening of the guide air duct is directed toward the rotation direction of the guide air duct.

[0009] Furthermore, the rotating assembly includes a rotating table fixedly mounted on the top of the base, the top of the rotating table is fixedly connected to an electric hydraulic push rod, and the output end of the electric hydraulic push rod is fixedly connected to a fixing plate.

[0010] Furthermore, a fixing plate is fixedly connected to the side wall of the fixing plate, and the fixing plate is rotatably connected to a sliding connection block via a rotating block.

[0011] Furthermore, the bottom of the air guide duct is fixedly connected to a sliding rod via a connecting plate, and the sliding rod is slidably installed in a sliding connecting block.

[0012] Furthermore, a boss for supporting the accelerating pipe is arranged on the top of the base.

[0013] Furthermore, a heated capsule is fixedly connected to the inner side wall of the guide plate, and a guide frame is fixedly connected to the top inner wall of the guide air duct.

[0014] Furthermore, an arc-shaped elastic plate is provided at the bottom of the guide frame toward the acceleration pipe, and an expansion bladder is fixedly connected to the position corresponding to the arc-shaped elastic plate in the guide frame. The expansion bladder and the heated bladder are connected to each other through a connecting tube. When the expansion bladder expands, the arc-shaped elastic plate also deforms downward.

[0015] Furthermore, the water curtain assembly includes an air intake filter and a first water curtain rack fixedly installed on the outer circumferential side of the accelerating duct, a third water curtain rack fixedly installed on the side wall of the accelerating duct, a second water curtain rack movably installed on one side of the third water curtain rack, and a plurality of absorbent cottons are fixedly installed in the first water curtain rack, the second water curtain rack and the third water curtain rack, and the external air enters the accelerating duct through the absorbent cotton and evaporates the water in the absorbent cotton.

[0016] Furthermore, the first water curtain rack, the second water curtain rack and the third water curtain rack are all penetrated by water pipes, the first water curtain rack, the second water curtain rack and the third water curtain rack are all provided with guide grooves, and the side walls of the guide grooves close to the absorbent cotton are provided with multiple water absorption holes, and the water flows into the guide grooves through the water pipes and is absorbed by the absorbent cotton through the water absorption holes.

[0017] Furthermore, a plurality of contraction springs and a flexible protective shell are fixedly installed between the first water curtain rack and the air intake filter, the contraction springs and the protective shell correspond one to one and the contraction springs are located inside the protective shell, a plurality of round rods are fixedly installed on the side of the first water curtain rack facing the second water curtain rack, a pull head is fixedly connected to one end of the round rod, a hole for the pull head to pass through is provided on the third water curtain rack, and only a hole for the round rod to pass through is provided on the second water curtain rack.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can be applied to steel that is wider or needs to be fully radiated by adjusting the area of ​​the steel surface through the cooperation between the rotating assembly and the water curtain assembly and increasing the contact area between the external air and the water curtain assembly, so as to meet the cooling requirements of different steels and improve the cooling effect on the steel, thereby improving the adaptability of the present invention;

[0020] The present invention can adjust the angle of the cooling air duct by cooperating between the rotating assembly and the cooling air duct, thereby increasing the area of ​​the cooling airflow passing through the steel, improving the cooling effect on the steel, and being applicable to wider steel.

[0021] The present invention sets a water curtain assembly and a rotating assembly. When the rotating assembly is started, it means that the cooling requirement for the steel is increased. At this time, the water curtain assembly works to increase the contact area between the external air intake airflow and the water curtain assembly to reduce the temperature of the cooling airflow, thereby improving the cooling effect on the steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the split structure of the cooling air duct of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the acceleration pipeline of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the rotating assembly of the present invention;

[0027] Figure 5It is a structural schematic diagram of the electric hydraulic push rod of the present invention;

[0028] Figure 6 It is a schematic diagram of the disassembled structure of the water curtain assembly of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the second water curtain rack of the present invention;

[0030] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at A in the middle;

[0031] Fig. 9 It is a structural schematic diagram of the first water curtain rack of the present invention.

[0032] In the figure: 1. base; 2. rotating assembly; 201. rotating table; 202. electric hydraulic push rod; 203. fixed plate; 204. top block; 205. sliding connection block; 206. slide rod; 3. cooling air duct; 301. acceleration pipe; 302. guide air duct; 303. arc boss; 304. guide plate; 305. heating bladder; 306. guide frame; 307. expansion bladder; 4. water curtain assembly; 401. air intake filter; 402. first water curtain frame; 403. second water curtain frame; 404. third water curtain frame; 405. water pipe; 406. absorbent cotton; 407. contraction spring; 408. protective shell; 409. round rod; 410. pull head; 411. guide groove; 412. water absorption hole; 5. motor; 6. fan blade. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention will be further described below in conjunction with the embodiments.

[0035] Reference Figures 1 to 9 A cooling fan for steel material cooling comprises a base 1, a rotating assembly 2 and a cooling air duct 3 mounted on the top of the rotating assembly 2. The rotating assembly 2 is mounted on the top of the base 1. A motor 5 is fixedly mounted on the side of the cooling air duct 3. A fan blade 6 is fixedly connected to the output end of the motor 5. When the motor 5 is started, the fan blade 6 is driven to rotate to blow air in the direction of the cooling air duct 3. The cooling air duct 3 comprises an accelerating duct 301 and a guide air duct 302 fixedly connected to one side of the accelerating duct 301.

[0036] The guide air duct 302 is rotatably installed on the top of the rotating component 2, the fan blade 6 is located in the accelerating duct 301 and the air blown by the fan blade 6 is directed toward the guide air duct 302, and a plurality of arc-shaped bosses 303 are fixedly installed on the top of the bottom plate of the guide air duct 302. The arc-shaped bosses 303 are used to support steel. The guide air duct 302 has two connecting plates respectively located above and below and a guide plate 304 serving as a side plate. The openings on both sides of the guide air duct 302 are of different sizes and are used to pass the steel, and the large opening of the guide air duct 302 is directed toward the rotation direction of the guide air duct 302.

[0037] In the prior art, the production specifications of steel are diversified, and steel has certain changes in the production process, such as changes in width and length of steel, while the specifications of cooling fans are usually fixed, which can easily affect the cooling effect on steel. The wind blown by the cooling fan cannot be guaranteed to pass completely through the surface of the steel, so a solution is proposed for improvement.

[0038] Specifically, the rotating assembly 2 includes a rotating table 201 fixedly installed on the top of the base 1, the top of the rotating table 201 is fixedly connected with an electric hydraulic push rod 202, the output end of the electric hydraulic push rod 202 is fixedly connected with a fixed plate 203, the side wall of the fixed plate 203 is fixedly connected with a fixed plate 203, the fixed plate 203 is rotatably connected with a sliding connecting block 205 through a rotating block, the bottom of the guide air duct 302 is fixedly connected with a sliding rod 206 through a connecting plate, the sliding rod 206 is slidably installed in the sliding connecting block 205, and a boss supporting the acceleration pipe 301 is provided on the top of the base 1.

[0039] When the present invention is used to cool steel, the steel can be placed vertically on the arc boss 303 or the guide air duct 302 can be mounted on the transmission track. The difference between the two is that if the steel is placed on the arc boss 303 for cooling, it is inconvenient to move the steel; and when the guide air duct 302 is mounted on the transmission track, the steel can move back and forth on the transmission track. The track for driving the steel usually adopts a transmission roller, which is the same as the arc boss 303 in that the spherical surface contacts the steel, and the contact area is small. The drive of the motor 5 will drive the fan blade 6 The airflow formed by the rotation is accelerated by the accelerating pipe 301 and passes through the guide air duct 302 to blow to the surface of the steel. At the same time, the airflow that has completely passed through the steel will directly impact the inclined guide plate 304 and flow outward under the guidance of the guide plate 304, thereby avoiding the turbulence formed by the vertical impact of the airflow, which will affect the steel plate close to the turbulent side. Since the turbulent flow will cause the airflow to be turbulent, the side of the steel plate close to the turbulent flow cannot be cooled by the stable airflow. At the same time, if the width of the steel is wide or the steel needs to be When the long side of the steel material faces the air outlet direction of the acceleration duct 301, the electric hydraulic push rod 202 can be started to push the electric hydraulic push rod 202 outward, and the top block 204 on the fixed plate 203 contacts the slide bar 206, pushing the guide air duct 302 fixedly connected to the slide bar 206 to rotate, and the rotation direction of the guide air duct 302 should be toward the large opening direction of the guide air duct 302. At this time, there is a certain angle between the steel material and the arc-shaped boss 303, and the angle between the side of the steel material and the guide plate 304 is relative to When the steel is placed perpendicular to the arc-shaped boss 303, the angle becomes smaller, that is, there is a certain angle between the airflow blown out of the acceleration pipe 301 and the horizontal or vertical direction of the steel plane. At the same time, since the acceleration pipe 301 and the guide air duct 302 are inclined relative to the steel, the area of ​​the airflow passing through the steel is increased compared to when the steel is placed vertically, that is, the effective area of ​​the airflow is increased, so that a larger area of ​​steel can be placed, which improves the adaptability of the present invention or increases the cooling area of ​​the original steel, thereby improving the cooling effect.

[0040] Therefore, the variable airflow channel can adapt to more specifications of steel, so that the present invention can adapt to complex cooling adjustments. At the same time, it can increase the heat dissipation area of ​​steel of the original specifications, improve the heat dissipation effect, and can adapt to thicker steel, further improving the adaptability of the present invention.

[0041] Specifically, a heated sac 305 is fixedly connected to the inner wall of the guide plate 304, a guide frame 306 is fixedly connected to the top inner wall of the guide air duct 302, and an arc-shaped elastic plate is provided at the bottom of the guide frame 306 facing the acceleration pipe 301. An expansion sac 307 is fixedly connected to the position of the guide frame 306 corresponding to the arc-shaped elastic plate. The expansion sac 307 and the heated sac 305 are connected to each other through a connecting tube. When the expansion sac 307 expands, the arc-shaped elastic plate is deformed downward therewith.

[0042] When the airflow passes through the surface of the steel, the heat of the steel will be conducted in the airflow. When the airflow flows to the position of the guide plate 304, the airflow is heated to the highest degree, that is, the airflow temperature at this position is the highest. The high-temperature gas will act on the heated sac 305, causing the gas volume in the heated sac 305 to increase and the air pressure to increase. This part of the air pressure will be transmitted to the expansion sac 307 through the connecting pipe. The expansion of the expansion sac 307 will cause the arc-shaped elastic plate under the guide frame 306 to deform downward. At this time, when the airflow in the acceleration pipe 301 passes under the arc-shaped elastic plate, the area for the airflow to pass through is reduced, and the airflow will be accelerated at this position. The accelerated airflow can take away the heat of the steel faster, thereby improving the cooling effect on the steel. At the same time, the expansion sac 307 near the air outlet of the acceleration pipe 301 will expand when the temperature is high, helping to improve the cooling effect.

[0043] Specifically, the water curtain assembly 4 includes an air inlet filter 401 and a first water curtain frame 402 fixedly installed on the outer circumference side of the accelerating pipe 301, a third water curtain frame 404 is fixedly installed on the side wall of the accelerating pipe 301, and a second water curtain frame 403 is movably installed on one side of the third water curtain frame 404. A plurality of absorbent cottons 406 are fixedly installed in the first water curtain frame 402, the second water curtain frame 403 and the third water curtain frame 404, and the external air enters the accelerating pipe 301 through the absorbent cotton 406. The first water curtain frame 402, the second water curtain frame 403 and the third water curtain frame 404 are all penetrated by a water pipe 405, and a guide groove 411 is opened in the first water curtain frame 402, the second water curtain frame 403 and the third water curtain frame 404. A plurality of water absorption holes 412 are opened on the side wall of the guide groove 411 close to the water absorption cotton 406. Water flows into the guide groove 411 through the water pipe 405 and is absorbed by the water absorption cotton 406 through the water absorption holes 412.

[0044] During the operation of the motor 5, the external water source enters the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404 through the water pipe 405, the water flows into the guide groove 411 of the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404 through the water pipe 405, and is absorbed by the absorbent cotton 406 through the water absorption holes 412 on the guide groove 411, and the external air passes through the air intake filter 401 and then passes through the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404 to enter the acceleration pipe 301, and the airflow passing through the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404 will evaporate the water of the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404, and take away the heat in the air, so that the airflow blown out of the acceleration pipe 301 is a cold airflow, which helps to cool the steel.

[0045] Specifically, a plurality of contraction springs 407 and a flexible protective shell 408 are fixedly installed between the first water curtain rack 402 and the air intake filter 401. The protective shell 408 is used to protect the contraction spring 407. The contraction spring 407 and the protective shell 408 correspond one to one and the contraction spring 407 is located in the protective shell 408. A plurality of round rods 409 are fixedly installed on the side of the first water curtain rack 402 facing the second water curtain rack 403. A pull head 410 is fixedly connected to one end of the round rod 409. A hole for the pull head 410 to pass through is opened on the third water curtain rack 404, and only a hole for the round rod 409 to pass through is opened on the second water curtain rack 403.

[0046] By using the cooperation between the rotating component 2 and the cooling air duct 3, the angle of the cooling air duct 3 can be adjusted, thereby increasing the area of ​​the cooling air flow passing through the steel, improving the cooling effect on the steel, and being suitable for wider steel. Through the water curtain component 4 and the rotating component 2, when the rotating component 2 is started, it means that the cooling requirement for the steel is increased at this time. At this time, the water curtain component 4 works, so that the contact area between the external air intake airflow and the water curtain component 4 is increased, which helps to reduce the temperature of the cooling airflow, thereby improving the cooling effect on the steel.

[0047] After the acceleration pipe 301 and the guide air duct 302 rotate, it means that a larger area of ​​steel needs to be cooled. Accordingly, the cooling airflow will take away more heat, and the airflow temperature needs to be lower to help take away more heat. The cooling requirement at this time is higher. At this time, the contraction spring 407 is energized. Under the action of the current, each turn of the coil of the contraction spring 407 will form a magnetic field with the same direction and connected end to end. Each turn of the coil will attract each other and shrink together, driving the first water curtain frame 402 to move toward the air intake filter 401. As the first water curtain rack 402 moves, the round rod 409 slides in the second water curtain rack 403 and the third water curtain rack 404 until the pull head 410 contacts the second water curtain rack 403. Since the hole on the second water curtain rack 403 is only for the round rod 409 to pass through, after the pull head 410 contacts the second water curtain rack 403, it will drive the second water curtain rack 403 to move toward the air intake filter 401, so that a gap is formed between the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404, and the first water curtain rack 402 and the air inlet filter 401 will also form a gap after the contraction spring 407 contracts. When external air enters, it will pass through the gap between the air inlet filter 401 and the first water curtain rack 402, the gap between the first water curtain rack 402 and the second water curtain rack 403, and the gap between the third water curtain rack 404 and the second water curtain rack 403, and make the moisture in the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404 evaporate. At this time, the air intake mode is from the air directly passing through the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack The airflow passes through the first water curtain rack 402, the second water curtain rack 403 and the third water curtain rack 404 respectively, thereby increasing the contact area between air and moisture. At the same time, the airflow passes between the first water curtain rack 402 and the second water curtain rack 403 and then between the second water curtain rack 403 and the third water curtain rack 404 for two coolings, which helps to reduce the external air temperature, thereby further reducing the temperature of the airflow blowing to the surface of the steel, which can take away more heat from the surface of the steel, meet higher cooling requirements, and improve cooling efficiency.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling fan for cooling steel, comprising a base (1), a rotating assembly (2) and a cooling air duct (3) mounted on the top of the rotating assembly (2), wherein the rotating assembly (2) is mounted on the top of the base (1), a motor (5) is fixedly mounted on the side of the cooling air duct (3), and a fan blade (6) is fixedly connected to the output end of the motor (5), characterized in that: The cooling air duct (3) comprises an accelerating duct (301) and a flow guiding duct (302) fixedly connected to one side of the accelerating duct (301); The guide air duct (302) is rotatably mounted on the top of the rotating assembly (2); the fan blade (6) is located in the accelerating duct (301) and the air blown by the fan blade (6) is directed toward the guide air duct (302); a plurality of arc-shaped bosses (303) are fixedly mounted on the top of the bottom plate of the guide air duct (302); the guide air duct (302) has two connecting plates respectively located at the upper and lower parts and a guide plate (304) serving as a side plate; the openings on both sides of the guide air duct (302) are of different sizes, and the large opening of the guide air duct (302) is directed toward the rotation direction of the guide air duct (302).

2. The cooling fan for cooling steel according to claim 1, characterized in that: The rotating assembly (2) comprises a rotating table (201) fixedly mounted on the top of the base (1); the top of the rotating table (201) is fixedly connected to an electric hydraulic push rod (202); and the output end of the electric hydraulic push rod (202) is fixedly connected to a fixing plate (203).

3. The cooling fan for cooling steel materials according to claim 2, characterized in that: The side wall of the fixed plate (203) is fixedly connected with a fixed plate (203), and the fixed plate (203) is rotatably connected with a sliding connection block (205) via a rotating block.

4. The cooling fan for cooling steel according to claim 3, characterized in that: The bottom of the air guide duct (302) is fixedly connected to a sliding rod (206) via a connecting plate, and the sliding rod (206) is slidably installed in a sliding connection block (205).

5. The cooling fan for cooling steel materials according to claim 4, characterized in that: The top of the base (1) is provided with a boss for supporting the accelerating pipe (301).

6. The cooling fan for cooling steel materials according to claim 4, characterized in that: A heated capsule (305) is fixedly connected to the inner side wall of the guide plate (304), and a guide frame (306) is fixedly connected to the top inner wall of the guide air duct (302).

7. The cooling fan for cooling steel materials according to claim 6, characterized in that: The bottom of the guide frame (306) is provided with an arc-shaped elastic plate in a direction facing the accelerating pipe (301); an expansion sac (307) is fixedly connected to a position corresponding to the arc-shaped elastic plate in the guide frame (306); the expansion sac (307) and the heated sac (305) are connected to each other via a connecting pipe; when the expansion sac (307) expands, the arc-shaped elastic plate is deformed downwards therewith.

8. The cooling fan for cooling steel materials according to claim 7, characterized in that: The water curtain assembly (4) comprises an air intake filter (401) and a first water curtain frame (402) fixedly mounted on the outer circumference of the accelerating pipe (301); a third water curtain frame (404) is fixedly mounted on the side wall of the accelerating pipe (301); a second water curtain frame (403) is movably mounted on one side of the third water curtain frame (404); a plurality of water-absorbing cottons (406) are fixedly mounted in the first water curtain frame (402), the second water curtain frame (403) and the third water curtain frame (404); external air enters the accelerating pipe (301) through the water-absorbing cottons (406) and evaporates the water in the water-absorbing cottons (406).

9. The cooling fan for cooling steel materials according to claim 8, characterized in that: The first water curtain frame (402), the second water curtain frame (403) and the third water curtain frame (404) are all penetrated by a water pipe (405); the first water curtain frame (402), the second water curtain frame (403) and the third water curtain frame (404) are all provided with a guide groove (411); a plurality of water absorption holes (412) are provided on a side wall of the guide groove (411) close to the water absorbent cotton (406); water flows into the guide groove (411) through the water pipe (405) and is absorbed by the water absorbent cotton (406) through the water absorption holes (412).

10. The cooling fan for cooling steel materials according to claim 9, characterized in that: A plurality of contraction springs (407) and a flexible protective shell (408) are fixedly installed between the first water curtain rack (402) and the air intake filter (401); the contraction springs (407) and the protective shell (408) correspond one to one and the contraction springs (407) are located inside the protective shell (408); a plurality of round rods (409) are fixedly installed on the side of the first water curtain rack (402) facing the second water curtain rack (403); a pull head (410) is fixedly connected to one end of the round rod (409); a hole for the pull head (410) to pass through is provided on the third water curtain rack (404); and a hole for the round rod (409) to pass through is only provided on the second water curtain rack (403).

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