An ultra-long copper body circulating cooling device

Abstract

The application belongs to the technical field of continuous casting and rolling copper equipment, and particularly relates to a super-long copper body circulating cooling device, which comprises an inclined inlet pipe, a return pipe and a cooling pipe, and a plurality of cleaning mechanisms and cooling boxes are installed on the cooling pipe; the cleaning mechanism comprises an outer protective pipe, an inner cleaning pipe and a sandwich ring cavity; a tapered port structure and a liquid supplementing hole in the inner wall of the tapered port structure are arranged at the liquid inlet end of the inner cleaning pipe; the inner wall is provided with a first helical groove and a second helical groove with the same helical direction, the second helical groove has a smaller distance from the copper rod and is provided with radial micropores in communication with the sandwich ring cavity; a jet mechanism is installed at the liquid outlet end, the nozzle of the jet mechanism is flat and eccentric, inverted tapered settling grooves are arranged at both ends of the inner cleaning pipe, and the liquid outlet is connected with a filter through a downflow pipe; the three-dimensional flow field is formed through axial helical flushing, radial fixed-point jet and rotary pre-jet, and the dead angle cleaning is realized; the settlement and filtration circulation are matched, the oxide skin is effectively removed, the cooling liquid is saved, and the operation cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of copper processing technology, and in particular to an ultra-long copper body circulating cooling device. Background Technology

[0002] During the continuous casting, extrusion, or drawing process of copper rods, the copper rods are gradually cooled from a high temperature. During this cooling process, a layer of oxide scale (mainly copper oxide and cuprous oxide) forms on the surface. If the oxide scale is not removed in time, it will not only affect the surface quality of the copper rods but also accelerate the wear of subsequent dies, reducing the yield. Therefore, surface cleaning during the cooling of the copper rods is a critical step in the production process.

[0003] In existing technologies, the cooling and cleaning of copper rods typically employs the following methods:

[0004] One method is straight-pipe spray cooling, which involves setting several spray holes on the inner wall of the pipe through which the copper rod passes, and spraying coolant onto the surface of the copper rod from the spray holes. Although this method is simple in structure, the coolant flows in a single direction, mainly spraying perpendicular to the surface of the copper rod, making it difficult to form a uniform flush in the circumferential direction of the copper rod, and easily creating cleaning dead zones; at the same time, when the spray pressure is insufficient, the peeled oxide scale particles cannot be washed away in time and are easy to re-adhere to the surface of the copper rod.

[0005] The second method is immersion cooling, which involves immersing the copper rod in a coolant tank. This method consumes a large amount of coolant, and because the liquid has poor fluidity, the oxide scale is mainly removed by natural sedimentation, which is inefficient. Moreover, after long-term use, the concentration of oxide scale in the coolant increases, which can cause secondary pollution to the copper rod.

[0006] The existing devices have problems such as easy evaporation of coolant, serious waste, and lack of effective particle sedimentation and filtration structure, resulting in a large number of oxide scale particles being carried in the circulating coolant, which reduces the cleaning effect. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an ultra-long copper body circulating cooling device, aiming to solve the problems in the background technology.

[0008] To achieve the above-mentioned technical objectives, the specific technical solution of the present invention is as follows: The present invention proposes an ultra-long copper body circulating cooling device, comprising an inclined inlet pipe, a return pipe, and a cooling pipe, through which the copper rod to be cooled passes; multiple cleaning mechanisms and a cooling box are installed on the cooling pipe, and a liquid filling pipe is installed between the inlet pipe and each cleaning mechanism; the cleaning mechanism includes an outer protective pipe, an inner cleaning pipe, and end caps located at both ends of the inner cleaning pipe, with a sandwiched annular cavity between the outer protective pipe and the inner cleaning pipe, and a liquid inlet on the sandwiched annular cavity, which is connected to the liquid filling pipe, and a guide sleeve that contacts the copper rod on the end cap; the inner wall of the inner cleaning pipe is provided with a first spiral groove, along which the coolant spirals forward; the inner wall of the inner cleaning pipe is also provided with a second spiral groove, the second spiral groove having the same spiral direction as the first spiral groove, and the distance between the inner surface of the second spiral groove and the copper rod being less than the distance between the inner surface of the first spiral groove and the copper rod, and the surface of the second spiral groove having several radial micro-holes, which communicate with the sandwiched annular cavity.

[0009] As a preferred technical solution of the present invention, the liquid outlet end of the inner cleaning tube is equipped with a jet mechanism, so that the copper rod is pre-cleaned by the rotating jet of the jet mechanism before entering the first spiral groove. The jet mechanism includes an annular seat, a rotating seat that is rotatably connected to the annular seat, and a plurality of nozzles uniformly arranged along the axial direction of the rotating seat. The rotating seat is provided with a through hole communicating with the nozzle.

[0010] As a preferred embodiment of the present invention, the nozzle is flat and its spray direction is eccentrically arranged relative to the axis of the rotating seat, so that the nozzle automatically drives the rotating seat to rotate when spraying liquid.

[0011] As a preferred embodiment of the present invention, one end of the inner cleaning tube is provided with a liquid outlet, which extends to the outside of the outer protective tube. A downflow pipe is connected between the liquid outlet and the return pipe, and a filter is installed on the downflow pipe.

[0012] As a preferred technical solution of the present invention, the liquid inlet end of the inner cleaning pipe is provided as a conical opening structure, the upstream coolant enters the interior of the inner cleaning pipe from the conical opening structure, and the inner wall of the conical opening structure is provided with a number of liquid replenishment holes, and the coolant in the interlayer annular cavity enters the conical opening structure through the liquid replenishment holes.

[0013] As a preferred embodiment of the present invention, the two ends of the inner cleaning tube are respectively provided with a first settling tank and a second settling tank, the first settling tank is located at the liquid outlet, and the second settling tank is located at the conical opening structure.

[0014] As a preferred embodiment of the present invention, both the first settling tank and the second settling tank are inverted conical structures; the second settling tank is connected to the liquid outlet through an inner hole.

[0015] As a preferred technical solution of the present invention, the cooling box is provided with a guide seat inside, the guide seat is provided with a guide hole for the copper rod to pass through, the bottom of the guide seat is provided with a liquid outlet pipe, and the liquid outlet pipe is connected to the return pipe; the cooling box is also provided with a liquid inlet pipe, which is connected to the liquid outlet pipe. When the liquid level of the coolant in the cooling box is higher than the inlet of the liquid inlet pipe, the coolant flows into the return pipe through the liquid inlet pipe and the liquid outlet pipe.

[0016] As a preferred embodiment of the present invention, a lid is hinged to the cooling box for sealing the cooling box; a bracket is also hinged to the cooling box, and a threaded rod is threadedly connected to the bracket for pressing the lid.

[0017] As a preferred embodiment of the present invention, the liquid flow directions in the inlet pipe and the return pipe are opposite, with the coolant flowing upward in the inlet pipe and downward in the return pipe.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention features a first spiral groove and a second spiral groove within the inner cleaning tube. The first spiral groove generates an axial spiral scouring flow, forcing the coolant to move at high speed relative to the surface of the copper rod. Simultaneously, radial micropores on the second spiral groove generate a fixed-point jet perpendicular to the surface of the copper rod, disrupting the fluid boundary layer and flushing away the peeled oxide particles. The two work together to form a "three-dimensional flow field," eliminating the cleaning dead zones present in a single spiral or straight tube structure. This significantly improves the removal efficiency of oxide scale, oil stains, and other deposits on the surface of the copper rod, ensuring uniform cleaning quality along the entire length of the ultra-long copper rod.

[0020] 2. The present invention sets up an inverted conical first settling tank and a second settling tank at both ends of the inner cleaning pipe, respectively, to automatically settle and discharge the peeled oxide scale particles by utilizing the density difference; at the same time, the outlet is connected to a downflow pipe with a filter, so that the coolant is filtered and returned to the return pipe, realizing the closed-loop circulation of coolant. This design not only avoids the oxide scale from re-adhering to the copper rod surface, but also significantly reduces the consumption of acidic industrial alcohol and waste liquid discharge, reduces production costs, and meets the requirements of green manufacturing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an ultra-long copper body circulating cooling device proposed in this invention.

[0022] Figure 2 This is a schematic diagram of the cleaning mechanism proposed in this invention.

[0023] Figure 3 This is a cross-sectional view of the cleaning mechanism proposed in this invention.

[0024] Figure 4 This is a schematic diagram of the jet mechanism proposed in this invention.

[0025] Figure 5 This is a schematic diagram of the cooling box proposed in this invention.

[0026] Figure 6 This is a schematic diagram of the interior of the cooling box proposed in this invention.

[0027] The corresponding names of the attached figures are as follows: 1. Inlet pipe; 2. Return pipe; 3. Cooling pipe; 4. Cooling tank; 5. Cleaning mechanism; 6. Liquid filling pipe; 7. Downflow pipe; 8. Filter; 41. Tank cover; 42. Support; 43. Threaded rod; 44. Liquid outlet pipe; 45. Guide seat; 46. Guide hole; 47. Liquid inlet pipe; 51. Outer protective tube; 52. Inner cleaning pipe; 53. Interlayer annular cavity; 54. End cap; 55. Jet mechanism; 56. First spiral groove; 57. Second spiral groove; 58. Radial micro-hole; 59. First settling tank; 510. Second settling tank; 511. Inner hole; 512. Liquid replenishment hole; 513. Conical opening structure; 514. Guide sleeve; 515. Liquid outlet; 516. Liquid inlet; 551. Annular seat; 552. Rotating seat; 553. Nozzle; 554. Through hole. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] like Figures 1 to 6 As shown, this embodiment discloses an ultra-long copper body circulating cooling device, including an inclined inlet pipe 1, a return pipe 2, and a cooling pipe 3. The copper rod to be processed passes through the cooling pipe 3 and moves forward continuously. The liquid flow directions in the inlet pipe 1 and the return pipe 2 are opposite: the coolant in the inlet pipe 1 flows upward, and the coolant in the return pipe 2 flows downward, thereby forming a forced circulation loop. In this embodiment, the coolant is acidic industrial alcohol, which cools the copper rod while chemically cleaning the oxides and dirt attached to the surface of the copper rod using the acidic environment.

[0030] Multiple cleaning mechanisms 5 and multiple cooling boxes 4 are installed at intervals along the length of the cooling pipe 3. A liquid filling pipe 6 is installed between the inlet pipe 1 and each cleaning mechanism 5. Part of the coolant in the inlet pipe 1 enters each cleaning mechanism 5 through the branch of the liquid filling pipe 6, and further enters the interior of the cooling pipe 3 to achieve multi-point, segmented cleaning and cooling of the copper rod.

[0031] Specifically, such as Figures 2-4As shown, the cleaning mechanism 5 includes an outer protective tube 51, an inner cleaning tube 52, and end caps 54 located at both ends of the inner cleaning tube 52. An annular cavity 53 is formed between the outer protective tube 51 and the inner cleaning tube 52. The annular cavity 53 is provided with a liquid inlet 516, which is sealed to the liquid filling tube 6. The end cap 54 is provided with a guide sleeve 514 that slides in contact with the copper rod, allowing the copper rod to pass through. The liquid inlet end (i.e., the end where the coolant flows in) of the inner cleaning tube 52 is set as a conical structure 513. The upstream coolant enters the interior of the inner cleaning tube 52 through the conical structure 513. The reduced diameter design of the conical structure 513 can significantly increase the flow rate of the coolant, forming a high-speed jet. In addition, several liquid replenishment holes 512 are opened on the inner wall of the conical structure 513. The coolant in the annular cavity 53 can be replenished into the interior of the conical structure 513 through these liquid replenishment holes 512, thereby compensating for the local pressure drop caused by the increase in flow rate and ensuring that the interior of the inner cleaning tube 52 is always full of coolant.

[0032] The inner wall of the inner cleaning pipe 52 is provided with a first spiral groove 56. When the upstream coolant enters the inner cleaning pipe 52, most of the coolant advances in a spiral shape along the first spiral groove 56, forming a strong rotating flow field. This strong swirling flow forces the acidic alcohol solution to generate high-speed relative motion with the surface of the copper rod, which can thoroughly clean the surface of the copper rod without dead angles, effectively removing oxide scale and oil stains. Furthermore, the inner wall of the inner cleaning pipe 52 is also provided with a second spiral groove 57. The spiral direction of the second spiral groove 57 is the same as that of the first spiral groove 56, and the distance between the inner surface of the second spiral groove 57 and the copper rod (i.e., the gap between the bottom of the groove and the surface of the copper rod) is smaller than the distance between the first spiral groove 56 and the surface of the copper rod. This design can reduce the flow resistance of the liquid to the radial micropores 58 in the subsequent structure. Several radial micropores 58 are formed on the surface of the second spiral groove 57, and these radial micropores 58 are connected to the interlayer annular cavity 53. During operation, a small amount of coolant within the interlayer annular cavity 53 forms a high-speed jet through radial micro-holes 58, vertically impacting the surface of the copper rod. This jet effectively disrupts the fluid boundary layer on the copper rod surface and washes away the already peeled oxide particles, preventing their re-adhesion. It should be noted that during the cleaning process, most of the coolant spirals along the first spiral groove 56, while only a small amount advances along the second spiral groove 57 and is jetted through the radial micro-holes 58. The two work synergistically and alternately, achieving a dual cleaning effect of "axial spiral scouring + radial pinpoint impact," which is far superior to a single spiral groove structure or straight pipe structure.

[0033] One end (downstream end) of the inner cleaning pipe 52 is provided with an outlet 515, which extends to the outside of the outer protective pipe 51. A downstream pipe 7 is connected between the outlet 515 and the return pipe 2. A filter 8 is installed on the downstream pipe 7 to filter out oxide scale particles and other solid impurities carried in the coolant, ensuring the cleanliness of the return coolant. The filter 8 must be disassembled and cleaned regularly. Part of the coolant in the inner cleaning pipe 52 flows into the return pipe 2 through the outlet 515, and part flows into the cooling pipe 3 and enters the next cleaning mechanism 5.

[0034] Furthermore, in this embodiment, a jetting mechanism 55 is also installed at the liquid outlet end (i.e., the end near the liquid outlet 515) of the inner cleaning tube 52. The jetting mechanism 55 includes an annular seat 551, a rotating seat 552 that is rotatably and sealingly connected to the annular seat 551, and a plurality of nozzles 553 uniformly arranged along the axial direction of the rotating seat 552. The annular seat 551 is fixedly installed on the surface of the inner cleaning tube 52. The rotating seat 552 is provided with a through hole 554 communicating with the nozzles 553. Coolant can enter the nozzles 553 through the through hole 554. The nozzles 553 are flat and their spraying direction is eccentrically arranged relative to the axis of the rotating seat 552. When coolant is sprayed out from the nozzles 553, the reaction force of the spray will automatically drive the rotating seat 552 to rotate at high speed relative to the annular seat 551. In actual operation, before entering the first spiral groove 56, the copper rod first passes through the jet mechanism 55. The jet mechanism 55 uses a rotating flat nozzle 553 to spray liquid onto the surface of the copper rod in an all-round and vertical manner, which pre-destroys the initial boundary layer and the thick oxide scale attached to the surface of the copper rod, creating favorable conditions for subsequent spiral scouring and radial jet cleaning.

[0035] Furthermore, the inner cleaning pipe 52 is equipped with a first settling tank 59 and a second settling tank 510 at both ends. The first settling tank 59 is located at the outlet 515, and the second settling tank 510 is located at the conical opening structure 513. Both the first settling tank 59 and the second settling tank 510 are inverted conical structures. Due to their high density, the oxide scale particles washed off the surface of the copper rod will settle into these two settling tanks under gravity. When the upstream coolant enters the inner cleaning pipe 52, the oxide scale particles will settle in the second settling tank 510. At the same time, the second settling tank 510 is connected to the outlet 515 through an inner hole 511. The deposited oxide scale particles can flow with the coolant through the inner hole 511 to the outlet 515, and then enter the downstream pipe 7 and filter 8 to be filtered and removed.

[0036] like Figures 5-6As shown, the cooling tank 4 is equipped with a guide seat 45 inside, and a guide hole 46 is opened on the guide seat 45 for the copper rod to pass through, so as to ensure that the copper rod remains centered during the cooling process. A liquid outlet pipe 44 is provided at the bottom of the guide seat 45, and the liquid outlet pipe 44 is connected to the return pipe 2. The cooling tank 4 is also equipped with an inlet pipe 47, which is connected to the liquid outlet pipe 44. When the coolant level in the cooling tank 4 is higher than the inlet of the inlet pipe 47, the coolant automatically flows into the return pipe 2 through the inlet pipe 47 and the liquid outlet pipe 44, thereby realizing automatic control of the liquid level in the cooling tank 4 and overflow recovery. In addition, a tank cover 41 is hinged to the cooling tank 4 to seal the cooling tank 4, preventing coolant splashing and reducing alcohol evaporation. A bracket 42 is also hinged to the cooling tank 4, and a threaded rod 43 is threadedly connected to the bracket 42. When the tank cover 41 is closed, the threaded rod 43 can be rotated to apply a clamping force to the tank cover 41 to ensure a reliable seal.

[0037] During operation, external coolant flows upward through inlet pipe 1 and is distributed to the jacketed annular cavity 53 of each cleaning mechanism 5 through liquid filling pipe 6. Within the jacketed annular cavity 53, the coolant is divided into two paths: the first path is ejected onto the copper rod surface through radial micro-holes 58, forming a radial impact flow; the second path enters the jet mechanism 55, forming a rotating jet pre-cleaning. After entering the cleaning pipe 52, during the cleaning process, most of the coolant spirals forward along the first spiral groove 56, while only a small amount advances along the second spiral groove 57 and is ejected through the radial micro-holes 58. These two processes work synergistically and alternately, achieving a dual cleaning effect of "axial spiral scouring + radial fixed-point impact." Oxide scale particles in the coolant collect in the first settling tank 59 and the second settling tank 510, are filtered through the downflow pipe 7 and filter 8, and then enter the return pipe 2, returning to the coolant circulation system. Simultaneously, the coolant in the cooling tank 4 also provides auxiliary cooling and cleaning for the copper rod and flows into the return pipe 2 through the outlet pipe 44. This forms a complete circulating cooling and cleaning circuit.

[0038] This invention combines chemical cleaning (acidic alcohol), mechanical rinsing (spiral groove strong swirling flow, radial micro-hole jet, rotating jet pre-cleaning) and physical settling (first settling tank, second settling tank) to achieve efficient, continuous, and dead-angle-free cooling and surface cleaning of ultra-long copper rods, significantly improving the surface quality of copper rods and extending the service life of molds in subsequent processing steps.

[0039] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circulating cooling device for an ultra-long copper body, comprising an inclined inlet pipe (1), a return pipe (2), and a cooling pipe (3), wherein the copper rod to be cooled passes through the cooling pipe (3); characterized in that, The cooling pipe (3) is equipped with multiple cleaning mechanisms (5) and a cooling box (4), and a liquid filling pipe (6) is installed between the inlet pipe (1) and each cleaning mechanism (5). The cleaning mechanism (5) includes an outer protective tube (51), an inner cleaning tube (52), and end caps (54) located at both ends of the inner cleaning tube (52). A sandwiched annular cavity (53) is provided between the outer protective tube (51) and the inner cleaning tube (52). An inlet (516) is provided on the sandwiched annular cavity (53). The inlet (516) is connected to the liquid adding tube (6). A guide sleeve (514) is provided on the end cap to contact the copper rod. The inner wall of the inner cleaning tube (52) is provided with a first spiral groove (56), and the coolant spirals forward along the first spiral groove (56); the inner wall of the inner cleaning tube (52) is also provided with a second spiral groove (57), the spiral direction of the second spiral groove (57) is the same as that of the first spiral groove (56), and the distance between the inner surface of the second spiral groove (57) and the copper rod is less than the distance between the inner surface of the first spiral groove (56) and the copper rod. The surface of the second spiral groove (57) is provided with a number of radial micro holes (58), and the radial micro holes (58) are connected to the interlayer annular cavity (53).

2. The ultra-long copper body circulating cooling device according to claim 1, characterized in that, The inner cleaning tube (52) is equipped with a jet mechanism (55) at the liquid outlet end, so that the copper rod is pre-cleaned by the rotating jet of the jet mechanism (55) before entering the first spiral groove (56). The jet mechanism (55) includes an annular seat (551), a rotating seat (552) that is sealed and rotatably connected to the annular seat (551), and a plurality of nozzles (553) uniformly arranged along the axial direction of the rotating seat (552). The rotating seat (552) is provided with a through hole (554) communicating with the nozzle (553).

3. The ultra-long copper body circulating cooling device according to claim 2, characterized in that, The nozzle (553) is flat and its spray direction is eccentrically arranged relative to the axis of the rotating seat (552), so that the nozzle (553) automatically drives the rotating seat (552) to rotate when spraying liquid.

4. The ultra-long copper body circulating cooling device according to claim 1, characterized in that, One end of the inner cleaning tube (52) is provided with a liquid outlet (515), which extends to the outside of the outer protective tube (51). A downflow tube (7) is connected between the liquid outlet (515) and the return tube (2), and a filter (8) is installed on the downflow tube (7).

5. The ultra-long copper body circulating cooling device according to claim 1, characterized in that, The inlet end of the inner cleaning pipe (52) is provided with a conical opening structure (513). The upstream coolant enters the inner cleaning pipe (52) through the conical opening structure (513), and the inner wall of the conical opening structure (513) is provided with several replenishment holes (512). The coolant in the interlayer annular cavity (53) enters the conical opening structure (513) through the replenishment holes (512).

6. The ultra-long copper body circulating cooling device according to claim 1, characterized in that, The inner cleaning pipe (52) is provided with a first settling tank (59) and a second settling tank (510) at both ends. The first settling tank (59) is located at the liquid outlet (515), and the second settling tank (510) is located at the conical opening structure (513).

7. The ultra-long copper body circulating cooling device according to claim 6, characterized in that, The first settling tank (59) and the second settling tank (510) are both inverted conical structures; the second settling tank (510) is connected to the liquid outlet (515) through an inner hole (511).

8. The ultra-long copper body circulating cooling device according to claim 1, characterized in that, The cooling box (4) is provided with a guide seat (45) inside. The guide seat (45) is provided with a guide hole (46) for the copper rod to pass through. The bottom of the guide seat (45) is provided with an outlet pipe (44) and the outlet pipe (44) is connected to the return pipe (2). The cooling box (4) is also provided with an inlet pipe (47) inside. The inlet pipe (47) is connected to the outlet pipe (44). When the coolant level in the cooling box (4) is higher than the inlet of the inlet pipe (47), the coolant flows into the return pipe (2) through the inlet pipe (47) and the outlet pipe (44).

9. The ultra-long copper body circulating cooling device according to claim 1 or 8, characterized in that, A lid (41) is hinged to the cooling box (4) for sealing the cooling box (4); a bracket (42) is also hinged to the cooling box (4), and a threaded rod (43) is threadedly connected to the bracket (42) for pressing the lid (41).

10. The ultra-long copper body circulating cooling device according to claim 1, characterized in that, The liquid flow direction in the inlet pipe (1) and the return pipe (2) is opposite. The coolant in the inlet pipe (1) flows upward and the coolant in the return pipe (2) flows downward.

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