Spray cooling device for roller surface of withdrawal and straightening machine

Abstract

The utility model discloses a withdrawal and straightening machine roller surface spray cooling device which comprises a withdrawal and straightening roller, a water mist generation assembly is arranged on one side of the withdrawal and straightening roller, a mist outlet of the water mist generation assembly is connected with a mist guide assembly, and the mist guide assembly sprays water mist to the roller surface of the withdrawal and straightening roller at intervals through a plurality of spray pipes. The cooling device can be used for effectively cooling the roller surface of the withdrawal and straightening machine, so that the surface cushion damage of a casting blank caused by the slag bonding phenomenon during withdrawal and straightening is reduced, and the service life of the withdrawal and straightening machine is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of steel casting, in particular to a roller surface spray cooling device for a tension and leveling machine. Background Art

[0002] The billet straightening machine is a device that can straighten continuously cast steel billets in a continuous casting workshop. During production, the upper and lower straightening rollers rely on hydraulic cylinders to clamp the billet, and the billet is pulled away and straightened by a motor drive. At present, the internal structure and cooling method of the straightening rollers both adopt closed-loop cooling with an internal cavity closed structure. The closed-circuit cooling water enters the water cavity at the left end of the center hole of the drive shaft through the insertion tube of the rotary joint installed in the center hole of the drive shaft, enters the roller body cavity through the two radial holes on the left end of the drive shaft for heat exchange, and then enters the water cavity outside the rotary joint insertion tube installed in the center hole of the drive shaft through the two radial holes on the right end of the drive shaft. The closed cooling water is returned through the return water channel of the rotary joint. The return water is recycled after being cooled in a clean loop.

[0003] In the actual straightening process, the roller surface thickness of the large-diameter straightening roller is relatively large, and the gap between the roller surface and its internal water channel cavity is relatively large. For example, the diameter of the water channel cavity of the straightening roller with a diameter of 400mm is only 60mm, resulting in unsatisfactory heat exchange effect through the interior, making it impossible to effectively control the roller surface temperature of the straightening machine. Slag sticking often occurs during straightening, resulting in pad damage on the surface of the casting and affecting the service life of the straightening machine. Utility Model Content

[0004] The purpose of the utility model is to provide a roller surface spray cooling device for a drawing and straightening machine, which can effectively cool the roller surface of the drawing and straightening machine, reduce the slag sticking phenomenon during drawing and straightening, and cause padding on the surface of the casting, thereby extending the service life of the drawing and straightening machine.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a spray cooling device for the roller surface of a straightening machine, comprising a straightening roller, a water mist generating component being provided on one side of the straightening roller, the mist outlet of the water mist generating component being connected to a mist guiding component, and the mist guiding component spraying water mist onto the roller surface of the straightening roller at intervals through a plurality of spray pipes.

[0006] A further improvement of the present utility model is that the water mist generating assembly includes an air pipe, the air pipe is provided with an air inlet and an air outlet, a water inlet pipe is provided in the air pipe, the water outlet end of the water inlet pipe is provided with a first atomizing nozzle, the first atomizing nozzle is arranged at the air outlet of the air pipe, and the mist guide assembly is connected to the air outlet.

[0007] A further improvement of the present invention is that the mist guide assembly includes a transverse tube arranged along the length direction of the straightening roller, the transverse tube is connected to the air outlet, and a plurality of the spray tubes are connected to the transverse tube at intervals.

[0008] A further improvement of the present invention is that the water mist generating assembly includes a shell, a plurality of the air pipes are arranged at intervals on the shell, the mist guiding assembly includes a diverter pipe connected to the shell, a plurality of the cross pipes are arranged at intervals on the diverter pipe, the cross pipe is connected to the shell through the diverter pipe, and a control valve for controlling the connection is provided at the connection between the diverter pipe and each cross pipe.

[0009] A further improved solution of the present invention is that the spray end of the spray pipe is arranged on the discharge side of the straightening roller.

[0010] A further improvement of the present invention is that a second atomizing nozzle is provided at the spray end of the spray pipe.

[0011] A further improvement of the present invention is that the lower end surface of the first atomizing nozzle is flush with the end surface of the air outlet of the air pipe.

[0012] The beneficial effects of the present invention are:

[0013] The utility model provides a spray pipe on one side of the straightening roller, and sprays water mist through the spray pipe to effectively cool the roller surface of the straightening machine, thereby reducing the occurrence of slag sticking during straightening and causing padding on the surface of the casting, and extending the service life of the straightening machine.

[0014] The utility model cooperates with the air pipe and the water pipe to further diffuse the water mist through the air pipe, so that the small water droplets in the water mist are evenly distributed, and the air pipe can be connected to cold air to improve the cooling effect.

[0015] The utility model provides a shell, and installs a plurality of air pipes on the shell. The plurality of transverse pipes can be controlled by the diverter pipe to realize the spray control of a plurality of tensioning and straightening machines, which is convenient for production regulation and unified management.

[0016] In this utility model, the spray tip of the spray tube is positioned on the discharge side of the straightening rollers, that is, on the roller surface after the billet has been straightened by the straightening rollers and leaves the straightening area. This arrangement allows the spray tube to spray a fine cooling water mist onto the straightening roller surface after the billet has escaped the influence of the straightening rollers, thereby rapidly reducing the surface temperature of the straightening rollers. By the time the straightening rollers re-engage with the billet after one rotation, the water mist adhering to their surface has evaporated due to the high temperature and will not affect the billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 This is a schematic diagram of the main cross-section of the trachea structure of the present invention.

[0019] Figure 3This is a schematic diagram of the positional relationship between the spray tube and the straightening roller of the utility model.

[0020] In the figure, 1- straightening roller, 2- spray pipe, 3- air pipe, 4- air inlet, 5- air outlet, 6- water inlet pipe, 7- first atomizing nozzle, 8- horizontal pipe, 9- shell, 10- diverter pipe, 11- control valve, 12- second atomizing nozzle. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0022] Combine Figures 1 and 2 It can be seen that a spray cooling device for the roller surface of a straightening machine includes a straightening roller 1, a water mist generating component is provided on one side of the straightening roller 1, the mist outlet of the water mist generating component is connected to a mist guiding component, and the mist guiding component sprays water mist onto the roller surface of the straightening roller 1 at intervals through a plurality of spray pipes 2.

[0023] The water mist generating assembly includes an air pipe 3, which is provided with an air inlet 4 and an air outlet 5. A water inlet pipe 6 is provided within the air pipe 3. A first atomizing nozzle 7 is provided at the outlet end of the water inlet pipe 6. The first atomizing nozzle 7 is positioned at the outlet 5 of the air pipe 3, and the mist guide assembly is connected to the outlet 5. The lower end surface of the first atomizing nozzle 7 is flush with the end surface of the outlet of the air pipe 3. After the water mist is sprayed from the first atomizing nozzle 7, it is diffused by the gas within the air pipe 3.

[0024] The mist guide assembly includes a transverse tube 8 extending along the length of the straightening roller 1, with a plurality of spray tubes 2 connected to the transverse tube 8 at intervals. When only one straightening machine needs to be cooled, the transverse tube 8 can be directly connected to the air outlet 5, and the roller surface can be cooled through a set of air pipes 3 and water inlet pipes 6.

[0025] In actual production, a factory building may have multiple straightening machines, all requiring cooling. The water mist generating assembly can provide water mist for these machines. The assembly includes a housing 9 with several air pipes 3 spaced apart. The mist guide assembly includes a shunt pipe 10 connected to the housing 9, with several cross pipes 8 spaced apart on the shunt pipe 10. The cross pipes 8 connect to the housing 9 through the shunt pipes 10. The housing 9 allows for unified management of the water mist, providing water mist for multiple straightening machines. The number of air pipes 3 and cross pipes 8 can be adjusted as needed.

[0026] A control valve 11 is provided at the connection between the shunt pipe 10 and each cross pipe 8 to control the flow. The control valve 11 can adjust the flow rate of the water mist to ensure that the water mist sprayed on the straightening roller 1 can be completely evaporated before the straightening roller 1 rotates to contact the steel billet.

[0027] The spray end of the spray pipe 2 is arranged on the discharge side of the straightening roller 1. The spray end of the spray pipe 2 is provided with a second atomizing nozzle 12. This prevents the water mist from partially condensing into large droplets after passing through a long pipe, ensuring that the final sprayed water mist is uniform.

[0028] The working principle of the roller surface spray cooling device of a straightening machine provided by the utility model is as follows: when working, a water source is provided to the water inlet pipe 6, and the water flow is refined into water mist by the first atomizing nozzle 7. The water mist diffuses through the air flow of the air pipe 3 and flows into the shell 9. The water mist passes through the diversion pipe 10 and the cross pipe 8 in turn and enters the spray pipe 2, and is sprayed on the roller surface of the straightening roller 1 through the spray pipe 2 to cool it.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are similarly included in the scope of patent protection of the present invention.

Claims

1. A roller surface spray cooling device for a tension and leveling machine, characterized in that: The invention comprises a straightening roller (1), wherein a water mist generating assembly is provided on one side of the straightening roller (1), a mist outlet of the water mist generating assembly is connected to a mist guiding assembly, and the mist guiding assembly sprays water mist onto the roller surface of the straightening roller (1) at intervals through a plurality of spray pipes (2).

2. The roller surface spray cooling device for a tension and leveling machine according to claim 1, characterized in that: The water mist generating assembly comprises an air pipe (3), the air pipe (3) is provided with an air inlet (4) and an air outlet (5), a water inlet pipe (6) is provided in the air pipe (3), a first atomizing nozzle (7) is provided at the water outlet end of the water inlet pipe (6), the first atomizing nozzle (7) is arranged at the air outlet (5) of the air pipe (3), and the mist guide assembly is connected to the air outlet (5).

3. The roller surface spray cooling device for a tension and leveling machine according to claim 2, characterized in that: The mist guide assembly comprises a transverse pipe (8) arranged along the length direction of the straightening roller (1), the transverse pipe (8) is connected to the air outlet (5), and a plurality of the spray pipes (2) are connected to the transverse pipe (8) at intervals.

4. The roller surface spray cooling device for a tension and leveling machine according to claim 3, characterized in that: The water mist generating assembly comprises a housing (9), a plurality of the air pipes (3) are arranged at intervals on the housing (9), the mist guiding assembly comprises a diverter pipe (10) connected to the housing (9), a plurality of the transverse pipes (8) are arranged at intervals on the diverter pipe (10), the transverse pipe (8) is connected to the housing (9) via the diverter pipe (10), and a control valve (11) for controlling the connection is provided at the connection between the diverter pipe (10) and each transverse pipe (8).

5. The roller surface spray cooling device for a tension and leveling machine according to claim 1, characterized in that: The spray end of the spray pipe (2) is arranged on the discharge side of the straightening roller (1).

6. The roller surface spray cooling device for a tension and leveling machine according to claim 1, characterized in that: A second atomizing nozzle (12) is provided at the spray end of the spray pipe (2).

7. The roller surface spray cooling device for a tension and leveling machine according to claim 2, characterized in that: The lower end surface of the first atomizing nozzle (7) is flush with the end surface of the air outlet of the air pipe (3).

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