Hot-rolled wire rod water mist cold dissipation device

Abstract

The utility model discloses a hot rolling wire rod water mist cooling device which comprises a hot rolling mill, a water tank, a water inlet pipe and an atomization cooling machine, a water inlet valve is installed on the water inlet pipe, a flow controller communicated with the water inlet valve is arranged in the atomization cooling machine, an ultrasonic generator is arranged at the bottom in the atomization cooling machine, and a mist outlet pipe is arranged at the top of the atomization cooling machine. Lifting supports are symmetrically arranged on the outer side of the hot rolling mill, a plurality of spraying pipes with the two ends closed are installed at the tops of the lifting supports at equal intervals, a plurality of short pipes are installed at the bottom of each spraying pipe at equal intervals, nozzles are detachably installed at the bottoms of the short pipes, and a distribution disc is installed at the end of a mist outlet pipe. A plurality of mist outlet hoses connected with the mist spraying pipe are mounted on the distribution disc, and an air spraying assembly communicated with the mist spraying pipe is arranged above the lifting support. According to the device, sufficient water mist can be generated, the wire rod cooling effect is improved, and safe use of the device in the operation process can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel rolling production equipment, specifically relating to a water mist cooling device for hot-rolled wire rod. Background Technology

[0002] In the production process of hot-rolled wire rod, water mist cooling technology is widely used to control oxidizing dust and improve the surface quality of strip steel. The working principle of hot rolling mill water mist cooling is mainly to atomize water into small particles of mist through spray technology, mix it with hot air, and achieve a cooling effect through evaporation and heat absorption. Specifically, the hot rolling water mist cooling system sprays water mist in the direction of the mill exit to form a water mist barrier, which can effectively capture and control oxidizing dust without affecting the temperature of the strip steel or product quality. In addition, water mist cooling can also improve the working environment and reduce the harm of dust to equipment and operators. In existing technologies, the water mist cooling system used in hot rolling mills pumps cooling water into spray pipes. When the fan is running at high speed, the cooling water is directly blown through nozzles onto the wire rod exiting the rolling mill for rapid cooling. However, this water mist cooling system has several drawbacks: First, the fan cannot completely atomize all the cold water entering the machine, resulting in a small amount of mist reaching the wire rod exit and failing to achieve adequate cooling. Second, excess water entering the fan cannot be promptly discharged, potentially damaging the fan and posing a significant safety hazard due to the fan's electrical operation. Therefore, developing a water mist cooling device for hot-rolled wire rod with a reasonable structural design, sufficient water mist output, good cooling effect, and safe operation is essential. Summary of the Invention

[0003] The purpose of this invention is to provide a hot-rolled wire rod water mist cooling device with reasonable structural design, sufficient water mist output, good cooling effect, and safe operation.

[0004] The purpose of this utility model is achieved as follows: it includes a hot rolling mill, a water tank, a water inlet pipe, and an atomizing cooler. A water inlet valve is installed on the water inlet pipe. A flow controller connected to the water inlet valve is installed inside the atomizing cooler. An ultrasonic generator is installed at the bottom of the atomizing cooler. A mist outlet pipe is installed at the top of the atomizing cooler. A lifting support is symmetrically arranged on the outside of the hot rolling mill. Multiple spray pipes with closed ends are installed at equal intervals on the top of the lifting support. Multiple short pipes are installed at equal intervals at the bottom of each spray pipe. A nozzle is detachably installed at the bottom of the short pipe. A distribution plate is installed at the end of the mist outlet pipe. Multiple mist outlet hoses connected to the spray pipe are installed on the distribution plate. An air jet assembly connected to the spray pipe is installed above the lifting support.

[0005] Compared with existing technologies, the advantages of this device are as follows: First, this device uses an ultrasonic generator to atomize the cold water in the water tank, allowing the cold water to directly form water mist in the atomizing cooler. The ultrasonic generator can deliver sufficient water mist into the spray pipe, solving the problem of insufficient water mist output from the spray pipe. This ensures that the water mist sprayed from the spray pipe is uniform and sufficient. At the same time, the flow controller can control the water storage in the atomizing cooler in a timely manner, allowing the ultrasonic generator to stably produce water mist. Second, the spraying assembly, used in conjunction with each spray pipe, can evenly spray the water mist entering the spray pipe to the outlet of the wire drawing machine. This ensures that the wire at the hot rolling wire drawing machine outlet receives uniform and efficient cooling, which is beneficial to improving the cooling effect of the wire. At the same time, it can prevent cold water from entering the spraying assembly, thus increasing the service life of the spraying assembly and ensuring safe operation of the device. This device has the advantages of reasonable structural design, sufficient water mist output, good cooling effect, and safe operation, and is easy to promote and use. Attached Figure Description

[0006] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0007] Figure 2 This is a schematic diagram showing the arrangement of the spray pipe 7 on the lifting bracket 6 in this utility model;

[0008] Figure 3 This is a schematic diagram of the connection structure between the short tube 8 and the nozzle 9 in this utility model;

[0009] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0010] In the diagram: 1-Hot rolling mill, 2-Water tank, 21-Filter screen, 22-Water supply pipe, 23-Drainage pipe, 24-Level gauge, 3-Inlet pipe, 31-Inlet valve, 4-Atomizing cooler, 41-Atomizing generator, 42-Lifting rod, 43-Float, 44-Counterweight, 45-Horizontal bar, 46-Gear plate, 47-Gear, 5-Mist outlet pipe, 6-Lifting bracket, 7-Spray pipe, 8-Short pipe, 81-Limiting groove, 9-Nozzle, 91-Limiting block, 92-Limiting rod, 93-Pressure rod, 94-Limiting cavity, 95-Pressure plate, 96-Connecting rod, 97-First connecting plate, 98-Second connecting plate, 99-Telescopic spring, 10-Distribution plate, 11-Mist outlet hose, 12-Pressure blower, 13-Main air supply pipe, 14-Branch air supply pipe, 15-Support plate, 16-Sealing ring. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0012] like Figures 1-4 As shown, this utility model includes a hot rolling mill 1, a water tank 2, a water inlet pipe 3, and an atomizing cooler 4. A water inlet valve 31 is installed on the water inlet pipe 3. A flow controller connected to the water inlet valve 31 is installed inside the atomizing cooler 4. The flow controller can control the amount of water stored in the atomizing cooler 4 in a timely manner. An ultrasonic generator 41 is installed at the bottom of the atomizing cooler 4. The ultrasonic generator 41 is a structure used in the prior art, and finished products can be purchased directly according to the power required. A mist outlet pipe 5 is installed at the top of the atomizing cooler 4. A lifting support 6 is symmetrically arranged on the outside of the hot rolling mill 1. Multiple spray pipes 7 with closed ends are installed at equal intervals on the top of the lifting support 6. Multiple short pipes 8 are installed at equal intervals at the bottom of each spray pipe 7. A nozzle 9 is detachably installed at the bottom of the short pipe 8. A distribution plate 10 is installed at the end of the mist outlet pipe 5. Multiple mist outlet hoses 11 connected to the spray pipe 7 are installed on the distribution plate 10. An air jet assembly connected to the spray pipe 7 is arranged above the lifting support 6.

[0013] The working process of this device is as follows: Cold water is stored in water tank 2. The inlet valve 31 is opened, and the cold water enters the ultrasonic atomizer 4 through the inlet pipe 3. Then, the ultrasonic generator 41 is powered on. After being powered on, the ultrasonic generator 41 generates vibrations. These high-frequency ultrasonic vibrations disperse the cold water into tiny particles. These tiny particles aggregate and continuously form water mist, which is continuously discharged from the mist outlet pipe 5. The water mist discharged from the mist outlet pipe 5 enters the distribution plate 10, and then enters the spray pipe 7 through the mist outlet hose 11. The water mist entering the spray pipe 7, under the spraying of the jet assembly, can be evenly sprayed onto the wire outlet of the hot-rolled wire drawing machine through the nozzle 9, thereby achieving water mist cooling of the wire. During the operation of this utility model… During the process, the ultrasonic generator 41 can deliver sufficient water mist into the spray pipe 7, solving the problem of insufficient water mist output from the spray pipe 7. This ensures that the water mist from the spray pipe 7 is sprayed evenly and sufficiently. At the same time, the flow controller can control the water storage in the atomizing cooler 4 in a timely manner, allowing the ultrasonic generator 41 to stably generate water mist. Secondly, the spraying assembly, in conjunction with each spray pipe 7, can evenly spray the water mist entering the spray pipe 7 to the outlet of the hot rolling wire drawing machine. This ensures that the wire at the outlet of the hot rolling wire drawing machine can be cooled evenly and efficiently, which is beneficial to improving the cooling effect of the wire. At the same time, it can prevent cold water from entering the spraying assembly, thus increasing the service life of the spraying assembly and ensuring safe operation of the device.

[0014] Furthermore, the flow controller includes a lifting rod 42 and a float 43. A through hole is provided at the top of the atomizing cooler 4, through which the lifting rod 42 passes. The float 43 is installed at the lower end of the lifting rod 42 located inside the atomizing cooler 4. A counterweight 44 is installed on the bottom surface of the float 43. A crossbar 45 is installed at the end of the lifting rod 42 located above the atomizing cooler 4. A toothed plate 46 is vertically installed on the crossbar 45. A gear 47 is installed on the valve stem of the water inlet valve 31. The gear 47 meshes with the toothed plate 46. When the cold water entering the atomizing cooler 4 from the water inlet pipe 3 reaches a preset liquid level... The float 43 drives the lifting rod 42 to move upward. As the lifting rod 42 moves upward, it drives the toothed plate 46 to move upward. The toothed plate 46 moves upward, which drives the gear 47 to rotate. As the gear 47 rotates, it closes the water inlet valve 31. When the cold water in the atomizing cooler 4 is consumed and the cold water level is lower than the predetermined position, the weight of the float 43 is less than the weight of the counterweight 44. At this time, the counterweight 44 pulls the toothed plate 46 downward through the lifting rod 42, causing the gear 47 to reverse, thereby opening the water inlet valve 31 and replenishing the cold water in the atomizing cooler 4 through the water inlet pipe 3 to ensure that the cold water storage in the atomizing cooler 4 is sufficient.

[0015] Furthermore, during use, to prevent system pipe blockage, a filter screen 21 is installed inside the water tank 2. A water supply pipe 22 is installed on the upper part of the water tank 2 on one side of the filter screen 21, and a drain pipe 23 is installed at the lower part of the water tank 2 on the same side of the filter screen 21. A drain valve is installed on the drain pipe. The water inlet pipe 3 is located at the bottom of the water tank 2 on the other side of the filter screen 21. The filter screen 31 can filter the cold water entering the atomizing cooler 4, preventing impurities in the cold water from entering the atomizing cooler 4 and causing pipe blockage. A level gauge 24 is installed inside the water tank 2, which can observe the water level in the water tank 2 in a timely manner, so as to facilitate timely replenishment of cold water into the water tank 2.

[0016] Furthermore, the jet assembly includes a pressurizing fan 12 and a main air supply pipe 13. The pressurizing fan 12 is mounted above the lifting bracket 6 via a support. Both ends of the main air supply pipe 13 are sealed. The number of main air supply pipes 13 matches the number of spray pipes 7. The main air supply pipes 13 are mounted on supports above the corresponding spray pipes 7. The outlet of the pressurizing fan 12 is connected to the main air supply pipe 13 via a connecting pipe. Multiple branch air supply pipes 14 connected to the spray pipes 7 are installed at equal intervals at the bottom of the main air supply pipe 13. The number and position of the branch air supply pipes 14 correspond to the short pipes 8. The air force generated by the pressurizing fan 12 enters the main air supply pipe 13 through the connecting pipe, and then enters each spray pipe 7 through the branch air supply pipes 14, and then sprays the water mist through the nozzles 9. This can improve the cooling effect of the water mist.

[0017] To facilitate nozzle replacement, the outer wall of the short tube 8 is machined with external threads, and the inner wall of the nozzle 9 is fitted with internal threads. The nozzle 9 is screwed onto the outer wall of the short tube 8. A support plate 15 is installed on the outer wall of the short tube near the nozzle. A sealing ring 16 is provided between the support plate 15 and the nozzle 9. The sealing ring 16 can seal the connection between the nozzle 9 and the short tube 8 to prevent water mist leakage. To prevent the nozzle 9 from loosening during use, the nozzle 9 and the short tube 8 are symmetrically positioned. Two sets of anti-rotation components are provided. Each anti-rotation component includes a limiting block 91, a limiting rod 92, and a pressure rod 93. A limiting cavity 94 is machined inside the side wall of the nozzle 9. An elastic element is installed inside the limiting cavity 94. One end of the pressure rod 93 is located inside the limiting cavity 94 and connected to one side of the elastic element. A pressure plate 95 is installed on the other end of the pressure rod 93. One end of the limiting rod 92 is located inside the limiting cavity 94 and connected to the other side of the elastic element. A limiting groove 81 is machined on the inner wall of the short pipe 8. The limiting block 91... One end of nozzle 9 is located in the limiting groove 81. The other end of the limiting groove 81 is connected to the other end of the limiting rod 92 via a connecting rod 96. When nozzle 9 is connected to short pipe 8, press the pressure plate 95 first. After the elastic element is compressed, the limiting rod 92 and the limiting block 91 move, thus connecting nozzle 9 and short pipe 8. After nozzle 9 is stably connected, the sealing ring 16 is connected between short pipe 8 and nozzle 9 to prevent water mist leakage. After nozzle 9 is stably connected, release the pressure plate 95. Under the elastic action of the elastic element, the connecting rod 96 and the limiting block 92 move. Block 91 returns to its original position, thereby allowing the limiting block 91 to be inserted into the limiting groove 81, thus limiting the nozzle 9 and the short pipe 8, ensuring the stability of the connection between the short pipe 8 and the nozzle 9, and effectively preventing the threads from loosening. The elastic element includes a first connecting plate 97, a second connecting plate 98, and a telescopic spring 99. The first connecting plate 97 is installed at the end of the pressure rod 93, the second connecting plate 98 is installed at the end of the limiting rod 92, and the telescopic spring 99 is installed between the first connecting plate 97 and the second connecting plate 98.

Claims

1. A water mist cooling device for hot-rolled wire rod, comprising a hot rolling mill (1), a water tank (2), a water inlet pipe (3), and an atomizing cooler (4), characterized in that: A water inlet valve (31) is installed on the water inlet pipe (3). A flow controller connected to the water inlet valve (31) is installed inside the atomizing cooler (4). An ultrasonic generator (41) is installed at the bottom of the atomizing cooler (4). A mist outlet pipe (5) is installed at the top of the atomizing cooler (4). A lifting bracket (6) is symmetrically arranged on the outside of the hot rolling mill (1). Multiple spray pipes (7) with closed ends are installed at equal intervals at the top of the lifting bracket (6). Multiple short pipes (8) are installed at equal intervals at the bottom of each spray pipe (7). A nozzle (9) is detachably installed at the bottom of the short pipe (8). A distribution plate (10) is installed at the end of the mist outlet pipe (5). Multiple mist outlet hoses (11) connected to the spray pipe (7) are installed on the distribution plate (10). An air jet assembly connected to the spray pipe (7) is installed above the lifting bracket (6).

2. The water mist cooling device for hot-rolled wire rod according to claim 1, characterized in that: The flow controller includes a lifting rod (42) and a float (43). The top of the atomizing cooler (4) is provided with a through hole. The lifting rod (42) is provided through the through hole. The float (43) is installed at the lower end of the lifting rod (42) located inside the atomizing cooler (4). A counterweight (44) is installed on the bottom surface of the float (43). A crossbar (45) is installed at the end of the lifting rod (42) located above the atomizing cooler (4). A toothed plate (46) is vertically installed on the crossbar (45). A gear (47) is installed on the valve stem of the water inlet valve (31). The gear (47) meshes with the toothed plate (46).

3. The water mist cooling device for hot-rolled wire rod according to claim 1, characterized in that: The water tank (2) is equipped with a filter screen (21) inside. A water supply pipe (22) is installed on the upper part of the water tank (2) on one side of the filter screen (21). A drain pipe (23) is installed on the lower part of the water tank (2) on one side of the filter screen (21). A drain valve is installed on the drain pipe. The water inlet pipe (3) is located at the bottom of the water tank (2) on the other side of the filter screen (21). A level gauge (24) is installed inside the water tank (2).

4. The water mist cooling device for hot-rolled wire rod according to claim 1, characterized in that: The jet assembly includes a pressurizing fan (12) and a main air supply pipe (13). The pressurizing fan (12) is mounted on the upper part of the lifting bracket (6) via a support. Both ends of the main air supply pipe (13) are sealed. The number of main air supply pipes (13) matches the number of spray pipes (7). The main air supply pipes (13) are mounted on the support above the corresponding spray pipes (7). The air outlet of the pressurizing fan (12) is connected to the main air supply pipe (13) via a connecting pipe. Multiple air supply branch pipes (14) connected to the spray pipes (7) are installed at equal intervals at the bottom of the main air supply pipe (13). The number and position of the air supply branch pipes (14) correspond to the short pipes (8).

5. A water mist cooling device for hot-rolled wire rod according to claim 1, characterized in that: The short pipe (8) has external threads machined on its outer wall, and the nozzle (9) has internal threads installed on its inner wall. The nozzle (9) is screwed onto the outer wall of the short pipe (8). A support plate (15) is installed on the outer wall of the short pipe near the nozzle. A sealing ring (16) is provided between the support plate (15) and the nozzle (9). Two sets of anti-rotation components are symmetrically arranged between the nozzle (9) and the short pipe (8).

6. A water mist cooling device for hot-rolled wire rod according to claim 5, characterized in that: The anti-rotation assembly includes a limiting block (91), a limiting rod (92), and a pressure rod (93). A limiting cavity (94) is machined in the side wall of the nozzle (9). An elastic element is provided in the limiting cavity (94). One end of the pressure rod (93) is located in the limiting cavity (94) and connected to the elastic element on one side. A pressure plate (95) is installed on the other end of the pressure rod (93). One end of the limiting rod (92) is located in the limiting cavity (94) and connected to the elastic element on the other side. A limiting groove (81) is machined on the inner wall of the short pipe (8). One end of the limiting block (91) is located in the limiting groove (81). The other end of the limiting groove (81) is connected to the other end of the limiting rod (92) through a connecting rod (96).

7. A water mist cooling device for hot-rolled wire rod according to claim 6, characterized in that: The elastic element includes a first connecting plate (97), a second connecting plate (98), and a telescopic spring (99). The first connecting plate (97) is installed at the end of the pressure rod (93), the second connecting plate (98) is installed at the end of the limiting rod (92), and the telescopic spring (99) is installed between the first connecting plate (97) and the second connecting plate (98).

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