Special steel on-line cooling system

Abstract

The utility model discloses a kind of special steel online cooling systems, belong to steel processing technical field, a kind of special steel online cooling system, including spraying unit, heat check unit and roller way: spraying unit is installed in roller way top, and the input end of spraying unit is connected with the first filter unit for water filtration;The control end of heat check unit is fixedly connected with the input end of first filter unit;The detection end of heat check unit is located in roller way top, and the detection end of heat check unit is located in the tail of spraying unit;Water return assembly for water collection after spraying is installed in roller way below;Cooling unit for water cooling is fixedly connected with the output end of water return assembly;The input unit for water collection after cold taking is connected with the output end of cooling unit, and the input end of the control end of heat check unit is fixedly connected with input unit.The utility model realizes automatic online cooling, not only reduce the labor intensity of on-site staff, but also improve special steel cooling efficiency, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel processing technology, specifically to an online cooling system for special steel. Background Technology

[0002] Cooling special steel is a crucial step in wire rod forming and plays a vital role in improving product quality. Currently, the air-cooling method used for special steel wire rod cooling suffers from poor air conductivity, resulting in a cooling rate only about one-tenth that of water cooling, which is insufficient to meet the demands for rapid cooling.

[0003] Air cooling efficiency is also affected by the environment. Cooling efficiency is relatively low in hot summer weather and relatively high in cold winter weather, which may cause performance fluctuations.

[0004] For example, Chinese patent CN204689118U describes a steel air-cooled conveying device, which includes a conveying frame with several conveying rollers. A fan mounting frame is also installed above the conveying frame. The fan mounting frame includes a fan mounting horizontal plate, and several fan mounting platforms are arranged on the fan mounting horizontal plate. Each fan mounting platform has an inclined surface, on which fans are mounted. An iron slag collection plate is also provided below the conveying frame, inclined downwards and extending to the support legs of the conveying frame. An iron slag collection box is hinged to the support legs, and the iron slag collection box is rotated by a handle. With this structure, the air-cooled steel conveying device effectively saves energy because the inclined fans installed above the conveying frame have a wide operating area. Furthermore, the iron slag collection plate and iron slag collection box on the support legs prevent iron slag from flying everywhere and polluting the environment.

[0005] Based on this, this utility model designs an online cooling system for special steel to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an online cooling system for special steel.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An online cooling system for special steel includes a spray unit, a heat inspection unit, and a roller conveyor. The spray unit is installed above the roller conveyor, and the input end of the spray unit is connected to a first filter unit for water filtration. The control terminal of the thermal detection unit is fixedly connected to the input terminal of the first filtration unit; The detection end of the thermal inspection unit is located above the roller conveyor, and the detection end of the thermal inspection unit is located at the tail of the spray unit; A water return assembly for collecting water after spraying is installed below the roller conveyor; A cooling unit for water cooling is fixedly connected to the output end of the water return assembly; The output of the cooling unit is connected to a water inlet unit for collecting the water after cooling. The water inlet unit is fixedly connected to the input of the control terminal of the thermal detection unit.

[0008] Furthermore, the spray unit includes multiple sets of main water pipes, four sets of blind covers, multiple sets of extension pipe plugs, multiple sets of spray pipes, and a water supply assembly. The water supply assembly is fixedly connected to the output end of the first filter unit. The two opposing sets of main water pipes are both connected to the water supply assembly. The multiple sets of main water pipes are divided into two equal parts. The adjacent ends of adjacent main water pipes in the same part are connected by bolts. The front end of the main water pipe at the front end and the rear end of the main water pipe at the rear end in the same part are both fixedly connected to the blind covers. The multiple sets of spray pipes are equally spaced between the two sets of opposing main water pipes. Both ends of the spray pipes are connected to the main water pipes. The number of sets of extension pipe plugs is twice the number of sets of spray pipes. The outer end of the main water pipe is sealed and slidably connected to the extension pipe plug. The inner end of the extension pipe plug has the same size as the inner diameter of the spray pipe. The inner end of the extension pipe plug is directly opposite the end of the spray pipe.

[0009] Furthermore, the bottom of the spray pipe is equipped with spray holes at -20°, 0°, and 20°.

[0010] Furthermore, the thermal detection unit includes a thermal detection component, a control system, and an electric ball valve. The thermal detection component is the detection end of the thermal detection unit, the electric ball valve is the control end of the thermal detection unit, the input end of the electric ball valve is connected to the return water component, and the output end of the electric ball valve is fixedly connected to the input end of the first filter unit.

[0011] Furthermore, the water inlet unit and the water return assembly have the same structure.

[0012] Furthermore, the water inlet unit includes a water tank, a first manual gate valve, a second filter unit, a return water pump, a check valve, and a second manual gate valve. The input and output ends of the first manual gate valve are fixedly connected to the input ends of the water tank and the second filter unit. The input and output ends of the return water pump are fixedly connected to the output end of the second filter unit and the input end of the check valve, respectively. The input end of the second manual gate valve is connected to the output end of the check valve. The output end of the second manual gate valve of the water inlet unit is fixedly connected to the input end of the electric ball valve. The second manual gate valve of the return water assembly is fixedly connected to the input end of the cooling unit. The water tank of the water inlet unit is located below the roller conveyor, and the water tank of the water return assembly is located at the output end of the cooling unit.

[0013] Furthermore, the second filter unit of the water inlet unit and the second filter unit of the water return assembly have the same structure as the first filter unit.

[0014] Furthermore, the first filtration unit includes a filter tank, a motor, a drain pipe, a metal pipe, a disc, a fixing ring, a straight shaft, a top plate, filter cartridges, a bottom plate, a water collection hood, a first guide pipe, and a second guide pipe. The lower end of the side wall of the filter tank is fixedly connected to the metal pipe. The top plate and bottom plate are sequentially fixedly connected to the inner wall of the filter tank from the upper guide pipe. The top plate and bottom plate are slidably connected to the outer wall of the filter cartridge's filtration section through sliding holes. Multiple filter cartridges are divided into two equal rings, and are all evenly spaced along the circumference within the top plate. The top of the filter cartridge is fixedly connected to the fixing ring, and the bottom of the fixing ring is in contact with the top of the top plate. The motor is fixedly installed on the top of the filter tank, and the straight shaft is... The part is connected to the drive end of the motor. The disc is fixedly installed on the straight shaft. The bottom of the disc is slidably connected to the top of the fixing ring. The water collection cover is fixedly installed at the bottom of the straight shaft. The second guide tube and the first guide tube are symmetrically connected and fixedly installed on the outside of the water collection cover. The center line of the second guide tube rotates along the trajectory formed by the center of the inner ring filter cylinder. The center line of the first guide tube rotates along the trajectory formed by the center of the outer ring filter cylinder. The inner diameter of the first guide tube and the second guide tube is greater than or equal to the inner diameter of the filter cylinder. The lower end of the water collection cover is rotatably connected to the top of the sewage pipe. The sewage pipe is fixedly connected to the filter tank. The part of the filter tank located between the top plate and the bottom plate is connected to the outlet pipe.

[0015] Furthermore, a straight pipe is fixedly connected to the bottom of the filter tank, and a control valve is fixedly installed on the straight pipe.

[0016] Furthermore, the lower end of the straight shaft is rotatably connected to the base plate via a bearing, the disc is threadedly connected to the straight shaft, and the top of the straight shaft is connected to the output end of the motor via a key.

[0017] Compared with the prior art, the advantages of this utility model are as follows: The detection end of this utility model's thermal detection unit detects the temperature of the special steel after cooling. Based on the detected temperature, the thermal detection unit controls the opening and closing of its control end. The water inlet unit pumps the cooled water into the control end of the thermal detection unit, where it is filtered by the first filtration unit before entering the spray unit to spray and cool the subsequent special steel. The sprayed water falls into the return water assembly and then enters the cooling unit for further cooling, achieving automated online cooling. This not only reduces the labor intensity of on-site personnel but also improves the cooling efficiency of the special steel, increasing production efficiency. At the same time, it enables water reuse, reducing water consumption and saving water resources. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of an online cooling system for special steel according to this utility model; Figure 2 This is a structural diagram of the thermal detection unit of this utility model; Figure 3 This is a structural diagram of the water inlet unit of this utility model; Figure 4 The three-dimensional spraying unit and its connecting structure of this utility model Figure 1 ; Figure 5 This is a front view of the spray unit and its connection structure of the present invention; Figure 6 This is a left view of the spray unit and its connection structure of the present invention; Figure 7 For along Figure 6 A sectional view along the AA direction.

[0020] The labels in the diagram represent: 1. Spray Unit 101. Main Water Pipe 102. Blind Cover 103. Extension Pipe Plug 104. Spray Pipe 105. Water Injection Assembly 2. First Filtration Unit 201. Filter Tank 202. Motor 203. Control Valve 204. Straight Pipe 205. Sewage Pipe 206. Metal Pipe 207. Disc 208. Fixing Ring 209. Straight Shaft 210. Top Plate 211. Filter Cartridge 212. Bottom Plate 213. Water Collection Cover 214. First Conduit Pipe 215. Second Conduit Pipe 216. Water Outlet Pipe 3. Heat Detection Unit 301. Heat Detection Assembly 302. Control System 303. Electric Ball Valve 4. Roller Conveyor 5. Water Inlet Unit 501. Water Tank 502. First Manual Gate Valve 503. Second Filtration Unit 504. Return Water Pump 505. Check Valve 506. Second Manual Gate Valve 6. Return Water Assembly 7. Cooling Unit. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0023] Example 1

[0024] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-7 A special steel online cooling system, including a spray unit 1, a heat detection unit 3, and a roller conveyor 4; The spray unit 1 is installed above the roller conveyor 4, and the input end of the spray unit 1 is connected to the first filter unit 2 for water filtration. The control terminal of the thermal detection unit 3 is fixedly connected to the input terminal of the first filter unit 2; The detection end of the thermal inspection unit 3 is located above the roller conveyor 4, and the detection end of the thermal inspection unit 3 is located at the tail of the spray unit 1. A water return assembly 6 for collecting water after spraying is installed below the roller conveyor 4; The output end of the water return component 6 is fixedly connected to a cooling unit 7 for water cooling; The output end of the cooling unit 7 is connected to a water inlet unit 5 for collecting water after cooling. The water inlet unit 5 is fixedly connected to the input end of the control terminal of the thermal detection unit 3.

[0025] The detection end of the heat detection unit 3 detects the temperature of the special steel after cooling. The heat detection unit 3 controls the opening and closing of its control end according to the detected temperature. The water inlet unit 5 draws the cooled water into the control end of the heat detection unit 3. The first filter unit 2 filters the water, and then the water enters the spray unit 1 to spray and cool the subsequent special steel. The sprayed water falls into the return water component 6 and then enters the cooling unit 7 for cooling, realizing automated online cooling. This not only reduces the labor intensity of on-site workers but also improves the cooling efficiency of special steel and increases production efficiency. At the same time, it enables water reuse, reduces water consumption, and saves water resources.

[0026] Please refer to the instruction manual appendix. Figure 4 The spray unit 1 includes multiple sets of main water pipes 101, four sets of blind covers 102, multiple sets of extension pipe plugs 103, multiple sets of spray pipes 104, and a water supply assembly 105. The water supply assembly 105 is fixedly connected to the output end of the first filter unit 2. Two opposing sets of main water pipes 101 are both fixedly connected to the water supply assembly 105. The multiple sets of main water pipes 101 are divided into two equal parts. The adjacent ends of adjacent main water pipes 101 within the same part are connected by bolts. The front end and rear end of the main water pipe 101 at the front end within the same part are connected by bolts. The rear ends of the main water pipes 101 are fixedly connected to the blind covers 102. Multiple sets of spray pipes 104 are equally spaced between the two sets of opposing main water pipes 101. Both ends of the spray pipes 104 are fixedly connected to the main water pipes 101. The number of multiple sets of extension pipe plugs 103 is twice the number of multiple sets of spray pipes 104. The outer end of the main water pipe 101 is sealed and slidably connected to the extension pipe plug 103. The inner end dimension of the extension pipe plug 103 is the same as the inner diameter dimension of the spray pipe 104. The inner end of the extension pipe plug 103 is directly opposite the end of the spray pipe 104.

[0027] The bottom of the spray pipe 104 has spray holes at -20°, 0°, and 20°.

[0028] Since multiple sets of main water pipes 101 are divided into two parts, the adjacent ends of adjacent main water pipes 101 in the same part are connected by bolts. The front end of the main water pipe 101 at the front end and the rear end of the main water pipe 101 at the rear end in the same part are fixedly connected to the blind cover 102. The corresponding set of main water pipes 101 is selected for assembly according to the spray length, realizing modular assembly and improving practicality.

[0029] The water filtered by the first filtration unit 2 enters the main water pipe 101 through the water supply component 105, and then enters the spray pipe 104. It is sprayed out from the spray holes at the bottom of the spray pipe 104 to spray water onto the special steel moving on the roller conveyor 4 and to cool the special steel. When a part of the assembled spray unit 1 does not need to spray water, the extension pipe plug 103 at the corresponding position is moved. The extension pipe plug 103 is moved to both ends of the spray pipe 104 at the corresponding position to block the spray pipe 104 at the corresponding position. After the spray pipe 104 is blocked, it will not spray water, while the others will spray water normally, which is convenient for adjustment according to actual needs.

[0030] Please refer to the instruction manual appendix. Figure 1-2 The thermal detection unit 3 includes a thermal detection component 301, a control system 302, and an electric ball valve 303. The thermal detection component 301 is the detection end of the thermal detection unit 3, and the electric ball valve 303 is the control end of the thermal detection unit 3. The input end of the electric ball valve 303 is connected to the return water component 6, and the output end of the electric ball valve 303 is fixedly connected to the input end of the first filter unit 2. The thermal detection component 301 uses a temperature sensor; After being cooled by spraying in spray unit 1, the special steel is driven by roller conveyor 4 to the area below heat detection component 301. Heat detection component 301 of heat detection unit 3 detects the temperature of the special steel after cooling. Control system 302 receives the detected temperature and controls the opening and closing of electric ball valve 303 of heat detection unit 3 based on the detected temperature and a set threshold. Water inlet unit 5 pumps cooled water into electric ball valve 303 of heat detection unit 3, where it is filtered by first filter unit 2 before entering spray unit 1 to spray and cool the subsequent special steel. The sprayed water falls into return water component 6 and then enters cooling unit 7 for further cooling, achieving automated online cooling. This not only reduces the labor intensity of on-site personnel but also improves the cooling efficiency of special steel and increases production efficiency. At the same time, it enables water reuse, reduces water consumption, and saves water resources.

[0031] When the temperature detected by the thermal detection component 301 is higher than the set upper temperature threshold, the opening degree of the electric ball valve 303 increases; when the temperature detected by the thermal detection component 301 is lower than the lower temperature threshold, the opening degree of the electric ball valve 303 decreases. Please refer to the instruction manual appendix. Figure 1 The inlet water unit 5 and the return water assembly 6 have the same structure; Please refer to the instruction manual appendix. Figure 1 , 3 The water inlet unit 5 includes a water tank 501, a first manual gate valve 502, a second filter unit 503, a return water pump 504, a check valve 505, and a second manual gate valve 506. The input and output ends of the first manual gate valve 502 are fixedly connected to the input ends of the water tank 501 and the second filter unit 503. The input and output ends of the return water pump 504 are fixedly connected to the output end of the second filter unit 503 and the input end of the check valve 505, respectively. The input end of the second manual gate valve 506 is connected to the output end of the check valve 505. The output end of the second manual gate valve 506 of the water inlet unit 5 is fixedly connected to the input end of the electric ball valve 303. The second manual gate valve 506 of the return water assembly 6 is fixedly connected to the input end of the cooling unit 7.

[0032] The water tank 501 of the water inlet unit 5 is located below the roller conveyor 4, and the water tank 501 of the water return assembly 6 is located at the output end of the cooling unit 7.

[0033] The second filter unit 503 of the water inlet unit 5 and the second filter unit 503 of the water return assembly 6 have the same structure as the first filter unit 2.

[0034] After spraying, the water falls into the water tank 501 of the return water assembly 6. The first manual gate valve 502 and the second manual gate valve 506 are opened, and the return water pump 504 draws the water in the water tank 501 into the second filter unit 503. The second filter unit 503 performs filtration, and the filtered water enters the cooling unit 7 through the check valve 505 and the second manual gate valve 506, which facilitates the pumping of the sprayed water into the cooling unit 7. After cooling by the cooling unit 7, the water falls into the water tank 501 of the water inlet unit 5. The first manual gate valve 502 and the second manual gate valve 506 are opened, and the return water pump 504 draws the water in the water tank 501 into the second filter unit 503. The second filter unit 503 performs filtration, and the filtered water enters the electric ball valve 303 through the check valve 505 and the second manual gate valve 506, so that the cooled water can be drawn into the electric ball valve 303. Please refer to the instruction manual appendix. Figure 1 , 4-7. The first filtration unit 2 includes a filter tank 201, a motor 202, a drain pipe 205, a metal pipe 206, a disc 207, a fixing ring 208, a straight shaft 209, a top plate 210, a filter cartridge 211, a bottom plate 212, a water collection cover 213, a first conduit 214, and a second conduit 215. The lower end of the side wall of the filter tank 201 is connected to the metal pipe 206. The top plate 210 and the bottom plate 212 are sequentially fixedly connected to the inner wall of the filter tank 201 from the upper guide wire. The top plate 210 and the bottom plate 212 are slidably connected to the outer wall of the filter part of the filter cartridge 211 through the opened sliding holes. Multiple sets of filter cartridges 211 are equally divided into two circles and are all equally spaced along the circumference inside the top plate 210. The top of the filter cartridge 211 is fixedly connected to the fixing ring 208, and the bottom of the fixing ring 208 is in contact with the top of the top plate 210. The motor 202 is fixedly installed on the top of the filter tank 201. The top of the straight shaft 209 is connected to the drive end of the motor 202. The disc 207 is fixedly installed on the straight shaft 209. The bottom of the disc 207 is slidably connected to the top of the fixing ring 208. The water collection cover 213 is fixedly installed at the bottom of the straight shaft 209. The second guide tube 215 and the first guide tube 214 are symmetrically connected and fixedly installed on the outside of the water collection cover 213. The center line of the second guide tube 215 rotates along the trajectory formed by the center of the inner ring filter cylinder 211. The center line of the first guide tube 214 rotates along the trajectory formed by the center of the outer ring filter cylinder 211. The inner diameter of the first guide tube 214 and the second guide tube 215 is greater than or equal to the inner diameter of the filter cylinder 211. The lower end of the water collection cover 213 is rotatably connected to the top of the drain pipe 205. The drain pipe 205 is fixedly connected to the filter tank 201. The filter tank 201 is connected to the outlet pipe 216 at the part between the top plate 210 and the bottom plate 212. The metal pipe 206 and the outlet pipe 216 of the first filter unit 2 are respectively connected to the electric ball valve 303 and the water filling assembly 105. The metal pipe 206 and the outlet pipe 216 in the second filter unit 503 of the water inlet unit 5 are respectively connected to the output end of the first manual gate valve 502 of the water inlet unit 5 and the input end of the return water pump 504 of the water inlet unit 5. The metal pipe 206 and the outlet pipe 216 in the second filter unit 503 of the return water assembly 6 are respectively connected to the output end of the first manual gate valve 502 of the return water assembly 6 and the input end of the return water pump 504 of the return water assembly 6.

[0035] The water to be filtered enters the filter tank 201 through the metal pipe 206, and then enters the filter cartridge 211. The filter cartridge 211 performs filtration, and the impurities are located inside the filter cartridge 211. The filtered water is discharged through the outlet pipe 216, which facilitates the filtration of water.

[0036] When it is necessary to clean the impurities inside the filter cartridge 211, the motor 202 drives the straight shaft 209 to rotate, the straight shaft 209 drives the water collection cover 213 to rotate, the second guide tube 215 and the first guide tube 214 rotate, the second guide tube 215 rotates to the bottom of the inner ring of the filter cartridge 211, and the first guide tube 214 rotates to the bottom of the outer ring of the filter cartridge 211. The water in the filter cartridge 211 above the second guide tube 215 and the first guide tube 214 is not powered, and the powered water on the outside of the filter cartridge 211 above the second guide tube 215 and the first guide tube 214 enters the filter cartridge 211 above the second guide tube 215 and the first guide tube 214, drives the impurities and water in the filter cartridge 211 above the second guide tube 215 and the first guide tube 214 into the second guide tube 215 and the first guide tube 214, and then into the water collection cover 213, and finally discharged from the drain pipe 205. This makes it convenient to clean the impurities in the filter cartridge 211 and is beneficial to practical use. A straight pipe 204 is fixedly connected to the bottom of the filter tank 201, and a control valve 203 is fixedly installed on the straight pipe 204.

[0037] When the control valve 203 is opened, impurities in the filter tank 201 are discharged through the straight pipe 204, facilitating the discharge of impurities from the filter tank 201.

[0038] The lower end of the straight shaft 209 is rotatably connected to the base plate 212 via a bearing, the disc 207 is threadedly connected to the straight shaft 209, and the top of the straight shaft 209 is connected to the output end of the motor 202 via a key. When filter cartridge 211 needs to be replaced, open the lid and body of filter canister 201. Since the top of the straight shaft 209 is connected to the output end of the motor 202 via a key, it is easy to separate the motor 202 from the straight shaft 209. Then, remove the disc 207 from the straight shaft 209. Then, take out the filter cartridge 211 to be replaced from the bottom plate 212 inside the top plate 210. Insert the new filter cartridge 211 into the top plate 210 and the bottom plate 212. Then, install the disc 207 on the straight shaft 209. The bottom of the straight shaft 209 contacts the top of the fixing ring 208. Then, close the lid and body of filter canister 201 together. The top of the straight shaft 209 is connected to the output end of the motor 202 via a key, making it easy to replace the filter cartridge 211.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An online cooling system for special steel, comprising a spray unit (1), a heat detection unit (3), and a roller conveyor (4), characterized in that: The spray unit (1) is installed above the roller conveyor (4), and the input end of the spray unit (1) is connected to a first filter unit (2) for water filtration. The control terminal of the thermal detection unit (3) is fixedly connected to the input terminal of the first filter unit (2); The detection end of the heat detection unit (3) is located above the roller conveyor (4), and the detection end of the heat detection unit (3) is located at the tail of the spray unit (1); A water return assembly (6) for collecting water after spraying is installed below the roller conveyor (4); The output end of the water return assembly (6) is fixedly connected to a cooling unit (7) for water cooling; The output end of the cooling unit (7) is connected to a water inlet unit (5) for collecting water after cooling. The water inlet unit (5) is fixedly connected to the input end of the control end of the heat detection unit (3).

2. The special steel online cooling system according to claim 1, characterized in that, The spray unit (1) includes multiple sets of main water pipes (101), four sets of blind covers (102), multiple sets of extension pipe plugs (103), multiple sets of spray pipes (104), and a set of water supply components (105). The set of water supply components (105) is fixedly connected to the output end of the first filter unit (2). The two opposing sets of main water pipes (101) are both fixedly connected to the water supply components (105). The multiple sets of main water pipes (101) are divided into two equal parts. The adjacent ends of adjacent main water pipes (101) in the same part are connected by bolts. The front end and rear end of the main water pipe (101) located at the front end in the same part are connected by bolts. The rear end of the main water pipe (101) is fixedly connected to the blind cover (102). Multiple sets of spray pipes (104) are equally spaced between two sets of opposing main water pipes (101). The two ends of the spray pipes (104) are respectively connected to the main water pipes (101). The number of multiple sets of extension pipe plugs (103) is twice the number of multiple sets of spray pipes (104). The outer end of the main water pipe (101) is sealed and slidably connected to the extension pipe plug (103). The inner end of the extension pipe plug (103) is the same as the inner diameter of the spray pipe (104). The inner end of the extension pipe plug (103) is directly opposite the end of the spray pipe (104).

3. The special steel online cooling system according to claim 2, characterized in that, The bottom of the spray pipe (104) has spray holes at -20°, 0° and 20°.

4. The special steel online cooling system according to claim 3, characterized in that, The thermal detection unit (3) includes a thermal detection component (301), a control system (302), and an electric ball valve (303). The thermal detection component (301) is the detection end of the thermal detection unit (3), and the electric ball valve (303) is the control end of the thermal detection unit (3). The input end of the electric ball valve (303) is connected to the return water component (6), and the output end of the electric ball valve (303) is fixedly connected to the input end of the first filter unit (2).

5. The special steel online cooling system according to claim 4, characterized in that, The water inlet unit (5) and the water return assembly (6) have the same structure.

6. The special steel online cooling system according to claim 5, characterized in that, The water inlet unit (5) includes a water tank (501), a first manual gate valve (502), a second filter unit (503), a return water pump (504), a check valve (505), and a second manual gate valve (506). The input and output ends of the first manual gate valve (502) are connected to the input ends of the water tank (501) and the second filter unit (503) in a fixed manner. The input and output ends of the return water pump (504) are connected to the output ends of the second filter unit (503) and the input ends of the check valve (505) in a fixed manner. The input end of the second manual gate valve (506) is connected to the output end of the check valve (505). The output end of the second manual gate valve (506) of the water inlet unit (5) is fixedly connected to the input end of the electric ball valve (303). The second manual gate valve (506) of the return water assembly (6) is fixedly connected to the input end of the cooling unit (7). The water tank (501) of the water inlet unit (5) is located below the roller conveyor (4), and the water tank (501) of the water return assembly (6) is located at the output end of the cooling unit (7).

7. The special steel online cooling system according to claim 6, characterized in that, The second filter unit (503) of the water inlet unit (5) and the second filter unit (503) of the water return assembly (6) have the same structure as the first filter unit (2).

8. The special steel online cooling system according to claim 7, characterized in that, The first filtration unit (2) includes a filter tank (201), a motor (202), a drain pipe (205), a metal pipe (206), a disc (207), a fixing ring (208), a straight shaft (209), a top plate (210), a filter cartridge (211), a bottom plate (212), a water collection cover (213), a first guide pipe (214), and a second guide pipe (215). The lower end of the side wall of the filter tank (201) is connected to the metal pipe (206) in a fixed manner. The inner wall of the filter tank (201) is connected sequentially from the upper guide pipe. A top plate (210) and a bottom plate (212) are fixedly connected. The top plate (210) and the bottom plate (212) are slidably connected to the outer wall of the filter part of the filter cartridge (211) through the opening of sliding holes. Multiple sets of filter cartridges (211) are divided into two rings and are all arranged at equal intervals along the circumference inside the top plate (210). The top of the filter cartridge (211) is fixedly connected to the fixing ring (208), and the bottom of the fixing ring (208) is in close contact with the top of the top plate (210). The motor (202) is fixedly installed in the filter tank (201). At the top, the top of the straight shaft (209) is connected to the drive end of the motor (202). The disc (207) is fixedly installed on the straight shaft (209). The bottom of the disc (207) is slidably connected to the top of the fixing ring (208). The water collection cover (213) is fixedly installed at the bottom of the straight shaft (209). The second guide tube (215) and the first guide tube (214) are symmetrically connected and fixedly installed on the outside of the water collection cover (213). The center line of the second guide tube (215) is arranged along the center of the inner ring filter cylinder (211). The trajectory rotates, and the center line of the first guide tube (214) rotates along the trajectory formed by the center of the outer ring filter cylinder (211). The inner diameter of the first guide tube (214) and the second guide tube (215) is greater than or equal to the inner diameter of the filter cylinder (211). The lower end of the water collection cover (213) is rotatably connected to the top of the drain pipe (205). The drain pipe (205) is fixedly connected to the filter tank (201). The filter tank (201) is connected to the outlet pipe (216) at the part between the top plate (210) and the bottom plate (212).

9. The special steel online cooling system according to claim 8, characterized in that, A straight pipe (204) is fixedly connected to the bottom of the filter tank (201), and a control valve (203) is fixedly installed on the straight pipe (204).

10. The special steel online cooling system according to claim 8, characterized in that, The lower end of the straight shaft (209) is rotatably connected to the base plate (212) via a bearing, the disc (207) is threadedly connected to the straight shaft (209), and the top of the straight shaft (209) is connected to the output end of the motor (202) via a key.

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