Water penetration cooling device of high-speed wire rod rolling mill

Abstract

The utility model discloses a through water cooling device of a high-speed wire rod rolling mill, and relates to the technical field of steel rolling. The cooling device comprises a cooling box body, a pinch roll assembly, a cooling assembly and a water conveying main pipe, a wire rod body to be cooled is arranged in the cooling box body in a penetrating mode, the wire rod body is conveyed in an auxiliary mode through the pinch roll assembly, and the pinch roll assembly comprises an upper pinch roll unit, a lower pinch roll unit and a driving unit; the upper pinch roll unit and the lower pinch roll unit are symmetrically distributed on the upper side and the lower side of a wire rod body, and the driving unit is fixed to the outer side face of the cooling box body and drives the upper pinch roll unit and the lower pinch roll unit to rotate at the same time in a mechanical transmission mode. According to the utility model, the plurality of cooling assemblies are arranged, so that the cooling uniformity of the wire rod body is better, the energy of ultrasonic waves is utilized to strengthen the water cooling effect, and the pinch roll assemblies are arranged to assist in conveying, so that the problems that the wire rod is easy to shake and the cooling uniformity is not good enough when the existing water-through cooling device is used for cooling are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel rolling, in particular to a water-penetrating cooling device for a high-speed wire rolling mill. Background Art

[0002] Since the 1960s, the emergence of new twist-free rolling technology abroad has greatly increased the final rolling speed of wire rod mills, and the weight of a single coil has also increased, resulting in a contradiction between the coiler and high-speed rolling and large coil weight. In addition, due to the increase in rolling speed, the final rolling temperature is higher than 1000°C. If the coil is still directly taken up after finishing rolling, problems such as increased iron oxide scale, coarse grains, and uneven mechanical properties will occur. For this reason, a post-rolling controlled cooling technology has been developed, which can make the cooling speed and process of wire rods after rolling different due to different steel types, specifications and final product performance, reduce the formation of iron oxide scale, and improve the mechanical properties and drawing properties of wire rods.

[0003] The controlled cooling technology after high-speed wire rolling, also known as online heat treatment, is a key process directly related to the mechanical properties and uniformity of the final product. The use of controlled cooling technology after rolling can increase the added value of the product and achieve energy saving in production. It plays a good role in improving the social and economic benefits of wire, promoting the development of metal product production, and opening up new areas for the use of wire.

[0004] The controlled cooling process controls the structure and performance of steel by controlling the different cooling rates of the rolled piece after rolling. Controlled cooling can further improve the strength of the steel without reducing the toughness of the rolled piece, and shorten the cooling time of the hot-rolled steel. Depending on the type of steel, the toughness of the controlled-cooling steel depends on the rolling conditions and cooling conditions. The structure and morphology of the steel before controlled cooling is determined by the controlled rolling process parameters. Controlled cooling conditions affect the austenite state after hot deformation and the pre-structure before phase transformation, and have a more direct impact on the phase transformation mechanism, precipitation behavior, and the microstructure of the phase transformation product. However, the existing water-penetrating cooling device still has the following disadvantages in actual use:

[0005] 1. When the existing water-penetrating cooling device is in use, the large amount of water released by the water tank nozzle and the steam generated after efficient heat exchange will form water turbulence on the surface of the steel bar, causing reverse resistance, especially when rolling coils, which will cause the steel bar to shake violently;

[0006] 2. The existing water-through cooling device has insufficient cooling uniformity, insufficient heat exchange rate between the wire and the cooling water, and zebra patterns are likely to appear on the surface of the rolled piece. Utility Model Content

[0007] The utility model aims to provide a water-penetrating cooling device for a high-speed wire rod rolling mill. By arranging a plurality of cooling components, the cooling uniformity of the wire body is improved. At the same time, the energy of ultrasonic waves is used to enhance the water cooling effect. By arranging a pinch roller component to assist in conveying, the problem that the wire is easy to shake and the cooling uniformity is not good enough during cooling in the existing water-penetrating cooling device is solved.

[0008] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0009] The utility model discloses a water-penetrating cooling device for a high-speed wire rod rolling mill, comprising a cooling box, a pinch roller assembly, a cooling assembly and a water supply pipe. A wire body to be cooled is arranged through the cooling box, and the wire body is assisted in conveying by the pinch roller assembly. The pinch roller assembly comprises an upper pinch roller unit, a lower pinch roller unit and a driving unit. The upper pinch roller unit and the lower pinch roller unit are symmetrically distributed on the upper and lower sides of the wire body. The driving unit is fixed on the outer side of the cooling box, and drives the upper pinch roller unit and the lower pinch roller unit to rotate simultaneously by mechanical transmission. A plurality of cooling assemblies distributed at equal intervals are also arranged inside the cooling box, and the cooling assemblies are connected with the water supply pipe, which is also fixed on the outer side of the cooling box. The cooling assembly comprises four cooling units evenly distributed along the circumference of the wire body.

[0010] Furthermore, the upper pinch roller unit includes a pinch roller body, a U-shaped seat, a slider, a guide rail and a first bevel gear; three pinch roller bodies are arranged, which are evenly spaced inside the cooling box, and the outermost pinch roller body is located at the end of the cooling box; the three pinch roller bodies are rotatably arranged in their respective U-shaped seats, and sliders are fixed at both ends of the U-shaped seat, and the sliders are slidably matched with the guide rails fixed on the inner wall of the cooling box; the rotating shaft of the pinch roller body passes through the side wall of the cooling box and is fixed with the first bevel gear.

[0011] Furthermore, the upper clamping roller unit also includes a second bevel gear, a transmission shaft, a frame and a cylinder; the transmission shaft is rotatably arranged at the bottom of the frame, and three second bevel gears distributed at equal intervals are fixedly sleeved on the transmission shaft, the second bevel gears are meshed with the first bevel gears, the top of the frame is fixedly connected to the movable rod end of the cylinder, and the cylinder body of the cylinder is fixed on the outer surface of the cooling box; the U-shaped seat is fixed to the bottom of the frame.

[0012] Further, the structure of the lower pinch roller unit is the same as that of the upper pinch roller unit.

[0013] Furthermore, the driving unit includes an upper end face gear, a lower end face gear, a spur gear, a motor and a mounting seat; the upper end face gear is fixedly sleeved at the end of the transmission shaft of the upper pinch roller unit, and the lower end face gear is fixedly sleeved at the end of the transmission shaft of the lower pinch roller unit; the two sides of the spur gear are respectively meshed with the upper end face gear and the lower end face gear, the spur gear is fixed to the end of the output shaft of the motor, the motor is fixed on the mounting seat, and the mounting seat is fixed to the outer surface of the cooling box.

[0014] Furthermore, the cooling unit includes an outer plate body, an inner plate body, a rotating nozzle, a connecting pipe and an ultrasonic generator; the outer plate body is fixed on the inner wall of the cooling box body, and the inner plate body is slidably arranged in the outer plate body, and the two are locked by adjusting the knob; the ends of the inner plate body are respectively fixed with a rotating nozzle and an ultrasonic generator, and the rotating nozzle is connected to the water supply main pipe through a connecting pipe.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model provides multiple cooling components to improve the cooling uniformity of the wire body. The cooling unit is adjustable to adapt to the use of wire bodies of different specifications. At the same time, the energy of ultrasound is used to enhance the water cooling effect and improve the cooling efficiency.

[0017] 2. The utility model adopts a full-process clamping method for smooth wire or threaded steel with low quality requirements by setting a clamping roller assembly, so as to solve the problem that a large amount of water flow released by the rotating nozzle and the steam generated after efficient heat exchange will form water turbulence on the surface of the steel bar, causing reverse resistance, especially when rolling coils, which will cause the steel bar to shake violently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure;

[0020] Figure 2 It is a schematic diagram of the structure of the pinch roller assembly;

[0021] Figure 3 It is a schematic diagram of the structure of the upper pinch roller unit;

[0022] Figure 4 is a schematic diagram of the drive unit structure;

[0023] Figure 5 It is a schematic diagram of the cooling component structure distribution;

[0024] Figure 6 Schematic diagram of the cooling unit structure.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Cooling box; 2. Pinch roller assembly; 3. Cooling assembly; 4. Water supply pipe; 5. Wire body; 21. Upper pinch roller unit; 22. Lower pinch roller unit; 23. Driving unit; 31. Cooling unit; 211. Pinch roller body; 212. U-shaped seat; 213. Sliding block; 214. Guide rail; 215. First bevel gear; 216. Second bevel gear; 217. Transmission shaft; 218. Frame; 219. Cylinder; 231. Upper end face gear; 232. Lower end face gear; 233. Spur gear; 234. Motor; 235. Mounting seat; 311. Outer plate; 312. Inner plate; 313. Adjusting knob; 314. Rotating nozzle; 315. Connecting pipe; 316. Ultrasonic generator. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] See also Figures 1-2 As shown in Figures 5 and 6, the utility model is a water-penetrating cooling device for a high-speed wire rod rolling mill, comprising a cooling box 1, a pinch roller assembly 2, a cooling assembly 3 and a water pipe 4. A wire body 5 to be cooled is arranged throughout the cooling box 1, and the wire body 5 is assisted in conveying by the pinch roller assembly 2. The pinch roller assembly 2 comprises an upper pinch roller unit 21, a lower pinch roller unit 22 and a driving unit 23; the upper pinch roller unit 21 and the lower pinch roller unit 22 are symmetrically distributed on the upper and lower sides of the wire body 5, the driving unit 23 is fixed on the outer side of the cooling box 1, and drives the upper pinch roller unit 21 and the lower pinch roller unit 22 to rotate simultaneously by mechanical transmission; a plurality of cooling assemblies 3 distributed at equal intervals are also arranged inside the cooling box 1, the cooling assembly 3 is connected to the water pipe 4, and the water pipe 4 is also fixed on the outer side of the cooling box 1; the cooling assembly 3 comprises four cooling units 31 evenly distributed along the circumference of the wire body 5.

[0029] Among them Figure 3As shown, the upper pinch roller unit 21 includes a pinch roller body 211, a U-shaped seat 212, a slider 213, a guide rail 214 and a first bevel gear 215; three pinch roller bodies 211 are provided, which are evenly spaced and distributed inside the cooling box 1, and the outermost pinch roller body 211 is located at the end of the cooling box 1; the three pinch roller bodies 211 are rotatably arranged in their respective U-shaped seats 212, and sliders 213 are fixed at both ends of the U-shaped seat 212, and the sliders 213 are slidably matched with the guide rails 214 fixed on the inner wall of the cooling box 1; the rotating shaft of the pinch roller body 211 passes through the side wall of the cooling box 1, and is fixed with the first bevel gear 215. Bevel gear 215; the upper pinch roller unit 21 also includes a second bevel gear 216, a transmission shaft 217, a frame 218 and a cylinder 219; the transmission shaft 217 is rotatably set at the bottom of the frame 218, and three second bevel gears 216 distributed at equal intervals are fixedly sleeved on the transmission shaft 217, the second bevel gear 216 is meshed with the first bevel gear 215, the top of the frame 218 is fixedly connected to the end of the movable rod of the cylinder 219, and the cylinder body of the cylinder 219 is fixed on the outer surface of the cooling box 1; the U-shaped seat 212 is fixed to the bottom of the frame 218; the structure of the lower pinch roller unit 22 is the same as that of the upper pinch roller unit 21.

[0030] Among them Figure 4 As shown, the driving unit 23 includes an upper end face gear 231, a lower end face gear 232, a spur gear 233, a motor 234 and a mounting seat 235; the upper end face gear 231 is fixedly sleeved on the end of the transmission shaft 217 of the upper pinch roller unit 21, and the lower end face gear 232 is fixedly sleeved on the end of the transmission shaft 217 of the lower pinch roller unit 22; the two sides of the spur gear 233 are respectively meshed with the upper end face gear 231 and the lower end face gear 232, the spur gear 233 is fixed on the end of the output shaft of the motor 234, the motor 234 is fixed on the mounting seat 235, and the mounting seat 235 is fixed on the outer surface of the cooling box body 1.

[0031] When the pinch roller assembly 2 is used, the cylinder 219 drives the frame 218 to move, the frame 218 drives the U-shaped seat 212 and the transmission shaft 217 to move, the U-shaped seat 212 drives the slider 213 to move along the guide rail 214, the transmission shaft 217 drives the upper end face gear 231 or the lower end face gear 232 to move along the spur gear 233, the wire body 5 is clamped by the upper and lower pinch roller bodies 211, and then the motor 234 is started, the motor 234 drives the upper end face gear 231 and the lower end face gear 232 to rotate simultaneously, and the upper end face gear 231 and the lower end face gear 232 respectively drive their own transmission shafts 21 7 rotates, the transmission shaft 217 drives the second bevel gear 216 to rotate, the second bevel gear 216 drives the first bevel gear 215 to rotate, and the first bevel gear 215 drives the pinch roller body 211 to rotate, and the two rotating pinch roller bodies 211 provide auxiliary power for the transportation of the wire body 5; the setting of the pinch roller assembly 2 adopts a full-process pinching mode for smooth wire or threaded steel with low quality requirements, so as to solve the problem that a large amount of water released by the rotating nozzle 314 and the steam generated after the efficient heat exchange will form water turbulence on the surface of the steel bar, causing reverse resistance, especially when rolling the coil, which will cause the steel bar to shake violently.

[0032] Among them Figure 6 As shown, the cooling unit 31 includes an outer plate 311, an inner plate 312, a rotating nozzle 314, a connecting pipe 315 and an ultrasonic generator 316; the outer plate 311 is fixed on the inner wall of the cooling box 1, and the inner plate 312 is slidably arranged in the outer plate 311, and the two are locked by adjusting the knob 313; the ends of the inner plate 312 are respectively fixed with a rotating nozzle 314 and an ultrasonic generator 316, and the rotating nozzle 314 is connected to the water supply main pipe 4 through the connecting pipe 315.

[0033] When the cooling unit 31 is used specifically, based on the specifications of the wire body 5, the distance between the rotating nozzle 314 and the wire body 5 is adjusted to the optimal value through the cooperation of the outer plate 311, the inner plate 312 and the adjustment knob 313. During cooling, the energy of ultrasound is used to enhance the water cooling effect, and a cavitation effect is generated through the ultrasonic generator 316 to form a large number of tiny bubbles. These bubbles will generate strong shock waves when they burst, which will quickly take away the heat on the surface of the wire body 5, thereby achieving the purpose of rapid cooling. Compared with traditional water cooling methods, ultrasonic wire water cooling has higher cooling efficiency and lower cooling temperature, which significantly improves the processing quality and performance of the wire body 5, and the cavitation effect of ultrasound can effectively remove impurities and oxides on the surface of the wire body 5, thereby improving the surface quality of the wire body 5.

[0034] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A water cooling device for a high-speed wire rod rolling mill, comprising a cooling box (1), a pinch roll assembly (2), a cooling assembly (3) and a water supply pipe (4), characterized in that: A wire body (5) to be cooled is disposed through the cooling box (1), and the wire body (5) is assisted in conveying by the pinch roller assembly (2), wherein the pinch roller assembly (2) comprises an upper pinch roller unit (21), a lower pinch roller unit (22) and a drive unit (23); The upper pinch roller unit (21) and the lower pinch roller unit (22) are symmetrically distributed on the upper and lower sides of the wire body (5); the driving unit (23) is fixed on the outer side of the cooling box (1) and drives the upper pinch roller unit (21) and the lower pinch roller unit (22) to rotate simultaneously by mechanical transmission; A plurality of cooling components (3) are also arranged at equal intervals inside the cooling box (1); the cooling components (3) are connected to the water supply pipe (4); and the water supply pipe (4) is also fixed on the outer surface of the cooling box (1); The cooling assembly (3) comprises four cooling units (31) evenly distributed along the circumference of the wire body (5).

2. A water cooling device for a high-speed wire rolling mill according to claim 1, characterized in that: The upper pinch roller unit (21) comprises a pinch roller body (211), a U-shaped seat (212), a slider (213), a guide rail (214) and a first bevel gear (215); Three pinch roller bodies (211) are provided and are distributed at equal intervals inside the cooling box (1), and the outermost pinch roller body (211) is located at the end of the cooling box (1); The three pinch roller bodies (211) are rotatably disposed in their respective U-shaped seats (212), and the sliders (213) are fixed at both ends of the U-shaped seats (212), and the sliders (213) are slidably matched with guide rails (214) fixed on the inner wall of the cooling box (1); The rotating shaft of the pinch roller body (211) passes through the side wall of the cooling box (1) and is fixed with the first bevel gear (215).

3. A water cooling device for a high-speed wire rolling mill according to claim 2, characterized in that: The upper pinch roller unit (21) further comprises a second bevel gear (216), a transmission shaft (217), a frame (218) and a cylinder (219); The transmission shaft (217) is rotatably arranged at the bottom of the frame (218); three second bevel gears (216) are fixedly sleeved on the transmission shaft (217) and are distributed at equal intervals; the second bevel gears (216) are meshed with the first bevel gears (215); the top of the frame (218) is fixedly connected to the end of the movable rod of the cylinder (219); and the cylinder body of the cylinder (219) is fixed to the outer surface of the cooling box (1); The U-shaped seat (212) is fixed to the bottom of the frame (218).

4. A water cooling device for a high-speed wire rolling mill according to claim 3, characterized in that: The structure of the lower pinch roller unit (22) is the same as that of the upper pinch roller unit (21).

5. A water cooling device for a high-speed wire rolling mill according to claim 4, characterized in that: The driving unit (23) comprises an upper end face gear (231), a lower end face gear (232), a spur gear (233), a motor (234) and a mounting seat (235); The upper end face gear (231) is fixedly sleeved on the end of the transmission shaft (217) of the upper pinch roller unit (21), and the lower end face gear (232) is fixedly sleeved on the end of the transmission shaft (217) of the lower pinch roller unit (22); The two sides of the spur gear (233) are respectively meshed with the upper end face gear (231) and the lower end face gear (232); the spur gear (233) is fixed to the end of the output shaft of the motor (234); the motor (234) is fixed to the mounting seat (235); and the mounting seat (235) is fixed to the outer surface of the cooling box (1).

6. The water cooling device for a high-speed wire rolling mill according to claim 1, characterized in that: The cooling unit (31) comprises an outer plate (311), an inner plate (312), a rotating nozzle (314), a connecting pipe (315), and an ultrasonic generator (316); The outer plate body (311) is fixed on the inner wall of the cooling box body (1), and the inner plate body (312) is slidably arranged in the outer plate body (311), and the two are locked by means of an adjusting knob (313); The rotating spray head (314) and the ultrasonic generator (316) are respectively fixed to the ends of the inner plate body (312); the rotating spray head (314) is connected to the water supply main pipe (4) via the connecting pipe (315).

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