Roll cooling device for metallurgical rolling

Abstract

The utility model relates to the field of roller cooling, specifically relates to a kind of roller cooling device for metallurgical rolling, including cross pipe, the bottom of the cross pipe is fixedly connected with joint, the outer wall of the joint is clamped with spray head;Liquid inlet pipe, the liquid inlet pipe is fixedly connected at cross pipe top, and located the middle position of cross pipe, the top of the liquid inlet pipe is fixedly connected with flange;Positioning mechanism, positioning mechanism includes sleeve, the sleeve is fixedly connected at the bottom of cross pipe, the bottom of the sleeve is fixedly connected with limit ring, the outer wall of the sleeve is slidably connected with sleeve ring, the bottom of the sleeve ring is fixedly connected with spring. Through the design of positioning mechanism, just need to push sleeve up and down to realize the disassembly or fixing of spray head, abandon the mode of traditional thread connection, so as to realize the quick disassembly of spray head when needing to overhaul spray head, so that the maintenance time of spray head can be greatly shortened, and maintenance work is more simple and efficient.

Description

Technical Field

[0001] This utility model relates to the field of roll cooling, specifically to a roll cooling device for metallurgical rolling. Background Technology

[0002] During the rolling process, the rolls generate a large amount of heat due to continuous contact with the high-temperature metal billet and intense friction, causing a rapid rise in roll surface temperature. To control the thermal expansion of the rolls, maintain material properties, and extend their service life, specialized cooling equipment must be installed to continuously cool the rolls. Currently, the mainstream cooling method involves spraying coolant onto the roll surface at a certain pressure and flow rate using nozzles arranged around the rolls, utilizing the convection and vaporization endothermic effects of the liquid to achieve efficient heat exchange.

[0003] The operating environment for roll cooling is extremely harsh, characterized by high temperature, high humidity, and abundant oxidizing dust. During the spraying process, the high-speed water flow impacting the roll surface easily splashes metal oxide scale and impurity particles. These splashes readily adhere to and accumulate inside the nozzle or at the outlet, gradually causing blockage of the nozzle flow channel. To avoid affecting cooling efficiency, the nozzle needs to be cleaned and inspected regularly to ensure the stable operation of the cooling system.

[0004] Currently, threaded connections are commonly used to seal the nozzles and water supply pipes in roll cooling systems. However, in high-temperature and high-vibration operating environments, the threaded pairs are prone to seizing and locking due to thermal expansion and mechanical vibration, leading to difficult disassembly and increased maintenance and replacement time costs. Furthermore, frequent assembly and disassembly operations accelerate thread wear, stripping, and even failure, severely impacting connection sealing and structural reliability. This not only reduces the lifespan of the threads themselves but also significantly inconveniences the daily maintenance and replacement of the nozzles. Therefore, it is essential to invent a roll cooling device for metallurgical rolling to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device for metallurgical rolling mill rolls. By incorporating a sleeve design, the nozzle and connector can be quickly connected, maintaining a stable connection. The upward movement of the collar, in conjunction with the inclined groove, pushes the positioning pin upward, allowing it to insert into the annular groove. The positioning pin, working with the annular groove, limits the nozzle's position, fixing it to the outer wall of the connector. Simultaneously, the inner ring of the collar further limits the positioning pin, preventing it from sliding downward within the inclined hole. This ensures the positioning pin is firmly abutted against the annular groove, enabling rapid nozzle installation and improving nozzle maintenance efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for metallurgical rolling mill rolls, comprising: A horizontal tube, the bottom of which is fixedly connected to a connector, and a nozzle is snapped onto the outer wall of the connector; The liquid inlet pipe is fixedly connected to the top of the horizontal pipe and located in the middle of the horizontal pipe. A flange is fixedly connected to the top of the liquid inlet pipe. The positioning mechanism includes a sleeve fixedly connected to the bottom of a horizontal tube. A limit ring is fixedly connected to the bottom of the sleeve. A collar is slidably connected to the outer wall of the sleeve. A spring is fixedly connected to the bottom end of the collar. The collar is elastically connected to the limit ring through the spring. A sloping groove is formed on the top of the inner wall of the collar. A sloping hole is formed on the inner wall of the sleeve. A positioning pin is slidably connected to the inner wall of the sloping hole. An annular groove for inserting the positioning pin is formed on the outer circumferential surface of the nozzle.

[0007] Preferably, the inner wall of the positioning pin is rolled with a steel ball, and the inner wall of the oblique hole is provided with a groove to guide the steel ball.

[0008] Preferably, connecting plates are fixedly connected to the outer walls of both ends of the horizontal tube, and bolt holes are provided on the connecting plates.

[0009] Preferably, the angle between the central axis of the oblique hole and the central axis of the nozzle is 40° to 42°, and the oblique hole is a circular hole structure with openings at both ends.

[0010] Preferably, a sealing ring is fixedly connected to the bottom of the connector. The sealing ring is an O-ring rubber ring that is resistant to coolant corrosion and can seal the connection between the connector and the nozzle.

[0011] Preferably, both ends of the positioning pin are hemispherical structures, one end of the positioning pin abuts against the inner wall of the annular groove, and the other end of the positioning pin abuts against the inner wall of the collar.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention, through the design of a positioning mechanism, allows for the disassembly or fixing of the nozzle simply by pushing the sleeve up and down, eliminating the need for traditional threaded connections. This enables quick disassembly and assembly of the nozzle when maintenance is required, significantly reducing maintenance time and making maintenance work simpler and more efficient. Furthermore, after the positioning mechanism locks the nozzle to the connector, a sealing ring can be used to seal the connection between the connector and the nozzle, ensuring that the coolant sprayed by the nozzle maintains a stable pressure and guaranteeing the efficient operation of the cooling system. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 A schematic diagram of the exploded structure; Figure 3 This is a partial cross-sectional structural diagram of the horizontal tube of this utility model; Figure 4 This is an exploded structural diagram of the sleeve of this utility model; Figure 5 This is a cross-sectional structural diagram of the sleeve of this utility model.

[0015] Legend: 1. Horizontal pipe; 2. Liquid inlet pipe; 3. Connector; 4. Nozzle; 5. Positioning mechanism; 51. Sleeve; 52. Limiting ring; 53. Collar; 54. Spring; 55. Inclined groove; 56. Inclined hole; 57. Positioning pin; 58. Annular groove; 59. Slide groove; 510. Steel ball; 6. Connecting plate; 7. Bolt hole; 8. Sealing ring; 9. Flange. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1 - Figure 5 A metallurgical rolling mill roll cooling device is shown, comprising a horizontal pipe 1, a liquid inlet pipe 2, and a positioning mechanism 5; A connector 3 is fixedly connected to the bottom of the horizontal tube 1. A nozzle 4 is snapped onto the outer wall of the connector 3. The coolant inside the horizontal tube 1 will enter the interior of the nozzle 4 through the connector 3 and finally be sprayed onto the high-temperature roll through the nozzle 4 to cool the roll. The inlet pipe 2 is fixedly connected to the top of the horizontal pipe 1 and is located in the middle of the horizontal pipe 1. The top end of the inlet pipe 2 is fixedly connected to the flange 9. The pipe for conveying coolant is fixed together with the inlet pipe 2 through the flange 9, so that coolant can be conveyed into the interior of the inlet pipe 2 and enter the interior of the horizontal pipe 1. The positioning mechanism 5 includes a sleeve 51, which is fixedly connected to the bottom of the horizontal tube 1. A limit ring 52 is fixedly connected to the bottom of the sleeve 51. A collar 53 is slidably connected to the outer wall of the sleeve 51. A spring 54 is fixedly connected to the bottom end of the collar 53. The collar 53 is elastically connected to the limit ring 52 through the spring 54. The elasticity of the spring 54 can drive the collar 53 to slide upward and reset on the outer wall of the sleeve 51. A sloping groove 55 is opened on the top of the inner wall of the collar 53. Since both ends of the positioning pin 57 are hemispherical structures, when the collar 53 slides upward... During the movement, when the inclined groove 55 contacts the bottom end of the positioning pin 57, the inclined groove 55 will push the bottom end of the positioning pin 57 upward, so that the positioning pin 57 slides upward on the inner wall of the inclined hole 56 and inserts into the interior of the annular groove 58. The inner wall of the sleeve 51 is provided with an inclined hole 56, and the inner wall of the inclined hole 56 is slidably connected to the positioning pin 57. The outer circumferential surface of the nozzle 4 is provided with an annular groove 58 for the positioning pin 57 to be inserted. The positioning pin 57 and the annular groove 58 can be used to limit the nozzle 4, so that the nozzle 4 can be fixed on the outer wall of the connector 3. Both ends of the positioning pin 57 are hemispherical structures. One end of the positioning pin 57 abuts against the inner wall of the annular groove 58, and the other end of the positioning pin 57 abuts against the inner wall of the collar 53. The collar 53 can limit the bottom end of the positioning pin 57, preventing it from sliding down the inner wall of the inclined hole 56, so that the positioning pin 57 can be tightly abutted against the inside of the annular groove 58.

[0018] like Figure 4 As shown, a steel ball 510 is rolled on the inner wall of the positioning pin 57, and a groove 59 is provided on the inner wall of the inclined hole 56 to guide the steel ball 510. The steel ball 510 and the groove 59 can reduce the friction between the positioning pin 57 and the inclined hole 56, making the positioning pin 57 slide more smoothly. At the same time, the downward stroke of the positioning pin 57 can be limited to prevent the positioning pin 57 from sliding out of the inclined hole 56.

[0019] like Figure 1 - Figure 2 As shown, connecting plates 6 are fixedly connected to the outer walls of both ends of the horizontal tube 1. Bolt holes 7 are opened on the connecting plates 6. The bolts are passed through the bolt holes 7 and connected to the inside of the rolling equipment, so that the nozzle 4 faces the roll, thus fixing the horizontal tube 1 inside the rolling equipment.

[0020] like Figure 3 - Figure 5 As shown, the angle between the central axis of the inclined hole 56 and the central axis of the nozzle 4 is 40° to 42°. Through the inclined hole 56, the positioning pin 57 can slide downward under its own gravity after it is released from the limit. The inclined hole 56 is a circular hole structure with openings at both ends. Through the inclined hole 56 with openings at both ends, the positioning pin 57 can enter the inside of the sleeve 51 or be removed from the sleeve 51.

[0021] like Figure 2 - Figure 3 As shown, a sealing ring 8 is fixedly connected to the bottom of the connector 3. The sealing ring 8 is an O-ring rubber ring that is resistant to coolant corrosion. The sealing ring 8 can seal the connection between the connector 3 and the nozzle 4.

[0022] The working principle of this utility model is as follows: When the nozzle 4 needs to be disassembled and repaired, first push the collar 53 downwards, so that the collar 53 slides down on the outer wall of the sleeve 51 and compresses the spring 54 until the collar 53 is completely disengaged from the bottom end of the positioning pin 57. At this time, the collar 53 will be released from the limit of the positioning pin 57. Under the action of its own weight, the positioning pin 57 will slide down on the inner wall of the inclined hole 56. At the same time, the positioning pin 57 will drive the steel ball 510 to roll down against the inner wall of the slide groove 59. The slide groove 59 can limit the rolling stroke of the steel ball 510, thereby preventing the positioning pin 57 from sliding out of the inclined hole 56. The downward sliding of the positioning pin 57 can make it disengage from the annular groove 58. At this time, the positioning pin 57 will release the limit of the nozzle 4. The nozzle 4 can be directly pulled off the outer wall of the connector 3, thereby completing the separation of the nozzle 4 from the connector 3, so that the nozzle 4 can be repaired or the sealing ring 8 can be replaced.

[0023] When nozzle 4 needs to be installed after maintenance, first push the collar 53 downwards, causing it to slide down the outer wall of sleeve 51 and compress spring 54 until the collar 53 is completely disengaged from the bottom end of positioning pin 57. At this point, the collar 53 will disengage from the positioning pin 57. Under its own weight, the positioning pin 57 will slide down the inner wall of the inclined hole 56, thus allowing the positioning pin 57 to move. The top of the nozzle detaches from the inside of the sleeve 51, at which point the nozzle 4 can be inserted into the inside of the sleeve 51, so that the nozzle 4 fits on the outer wall of the connector 3, and the sealing ring 8 is pressed down. The sealing ring 8 can be used to seal the connection between the nozzle 4 and the connector 3. Then, the collar 53 is released, and the previously compressed spring 54 will push the collar 53 upward, so that the collar 53 slides upward on the outer wall of the sleeve 51. When the collar 53 slides upward, the inclined groove 55 contacts the bottom end of the positioning pin 57. Since both ends of the positioning pin 57 are hemispherical structures, the inclined groove 55 will push the bottom end of the positioning pin 57 upward, so that the positioning pin 57 slides upward on the inner wall of the inclined hole 56. The positioning pin 57 moves and inserts into the annular groove 58. At the same time, the positioning pin 57 drives the steel ball 510 to roll upward on the inner wall of the slide groove 59. When the spring 54 drives the collar 53 to move upward and reset, the bottom end of the positioning pin 57 will be misaligned with the inclined groove 55 and abut against the inner ring surface of the collar 53. At this time, the inner ring surface of the collar 53 can limit the positioning pin 57, preventing it from sliding downward on the inner wall of the inclined hole 56. This allows the positioning pin 57 to be tightly abutted against the inside of the annular groove 58. At this time, the positioning pin 57 and the annular groove 58 can limit the nozzle 4, thereby fixing the nozzle 4 to the outer wall of the connector 3. This completes the installation of the nozzle 4.

[0024] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling device for rolling mill rolls used in metallurgical rolling, characterized in that, include: A horizontal tube (1) is fixedly connected to the bottom of the horizontal tube (1), and a nozzle (4) is snapped onto the outer wall of the nozzle (3). The liquid inlet pipe (2) is fixedly connected to the top of the horizontal pipe (1) and located in the middle of the horizontal pipe (1). The top end of the liquid inlet pipe (2) is fixedly connected to a flange (9). The positioning mechanism (5) includes a sleeve (51), which is fixedly connected to the bottom of the horizontal tube (1). A limiting ring (52) is fixedly connected to the bottom of the sleeve (51). A collar (53) is slidably connected to the outer wall of the sleeve (51). A spring (54) is fixedly connected to the bottom end of the collar (53). The collar (53) is elastically connected to the limiting ring (52) through the spring (54). A sloping groove (55) is opened on the top of the inner wall of the collar (53). A sloping hole (56) is opened on the inner wall of the sleeve (51). A positioning pin (57) is slidably connected to the inner wall of the sloping hole (56). An annular groove (58) for the positioning pin (57) to be inserted is opened on the outer circumferential surface of the nozzle (4).

2. The rolling mill roll cooling device according to claim 1, characterized in that: The inner wall of the positioning pin (57) is rolled with a steel ball (510), and the inner wall of the oblique hole (56) is provided with a groove (59) to guide the steel ball (510).

3. The rolling mill cooling device for metallurgical rolling according to claim 1, characterized in that: The horizontal tube (1) has connecting plates (6) fixedly connected to the outer walls of both the left and right ends, and bolt holes (7) are provided on the connecting plates (6).

4. A cooling device for metallurgical rolling mill rolls according to claim 1, characterized in that: The angle between the central axis of the oblique hole (56) and the central axis of the nozzle (4) is 40° to 42°, and the oblique hole (56) is a circular hole structure with openings at both ends.

5. A rolling mill cooling device for metallurgical rolling according to claim 1, characterized in that: A sealing ring (8) is fixedly connected to the bottom of the connector (3). The sealing ring (8) is an O-ring rubber ring that is resistant to coolant corrosion. The sealing ring (8) can seal the connection between the connector (3) and the nozzle (4).

6. A cooling device for metallurgical rolling mill rolls according to claim 1, characterized in that: Both ends of the positioning pin (57) are hemispherical structures. One end of the positioning pin (57) abuts against the inner wall of the annular groove (58), and the other end of the positioning pin (57) abuts against the inner wall of the collar (53).

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