A nanocrystalline crystallizer copper sleeve quick disassembly device and disassembly method

Abstract

The present invention provides a nanocrystalline crystallizer copper sleeve rapid disassembly device and disassembly method. The disassembly device includes a lifting cantilever, a two-dimensional translation platform, a disassembly bracket, and an amorphous heating belt. The lifting cantilever is used to lift the rotating shaft above the two-dimensional translation platform. The disassembly bracket is located on the two-dimensional translation platform. The amorphous heating belt is wrapped around the outer wall of the copper sleeve. The amorphous heating belt can heat the copper sleeve, thereby causing it to expand. After expansion, the copper sleeve automatically separates from the rotating shaft. The disassembly device uses a flexible amorphous heating belt to heat the copper sleeve. A vacuum pump and a liquid nitrogen container are used to achieve uniform rapid cooling and uniform contraction of the rotating shaft. Under the combined action of the uniform contraction of the rotating shaft and the rapid expansion of the copper sleeve, the copper sleeve automatically separates from the rotating shaft. This improves the reuse rate of the copper sleeve and the rotating shaft, and the disassembly is time-saving and efficient, thereby reducing production costs and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and in particular to a nanocrystalline crystallizer copper sleeve quick disassembly device and disassembly method. Background Art

[0002] The planar stream casting mold is a wheel-type mold featuring a typical sleeve-and-sleeve structure, with a rotating shaft inlaid with a copper sleeve. The shaft is typically constructed of 45# steel, and the sleeve is typically chrome-zirconium copper or beryllium copper. During use, the planar stream casting mold requires turning and in-process grinding to achieve a high-quality finish on the sleeve to meet the requirements of the casting process. Due to continuous turning and grinding, the sleeve gradually becomes thinner, necessitating replacement when the mold thickness reaches a certain level. The rotating shaft and sleeve of the nanocrystalline mold are assembled using a shrink-fit sleeve-and-sleeve structure. The rigid fit makes the sleeve difficult to remove.

[0003] In the prior art, the method for disassembling the copper sleeve is: first, heat the copper sleeve with a flame spray gun to expand the copper sleeve, and then use a hammer to knock it off, or fix the copper sleeve and use special equipment to move the rotating shaft outward relative to the copper sleeve, so as to pull out the copper sleeve. The flame baking temperature is uncontrollable, which will cause the copper sleeve to be locally overheated and the grains to grow abnormally, and the copper sleeve will be completely scrapped. In addition, the rotating shaft is also heated due to heat transfer during the flame heating process, and the interference force is not significantly eliminated. The use of mechanical force to separate the bearings and shafts is likely to damage the bearings and shafts, and the use of drawing methods is likely to cause the rotating shaft to have larger dimensional tolerances and outer surface scratches, resulting in the scrapping of the rotating shaft, reducing the reuse rate of core components, and manual disassembly is time-consuming and inefficient, which seriously increases the cost of repair and maintenance. Summary of the Invention

[0004] The purpose of the present invention is to provide a nanocrystalline crystallizer copper sleeve quick disassembly device and disassembly method. The disassembly device will not damage the copper sleeve and the rotating shaft during the disassembly of the nanocrystalline crystallizer copper sleeve, thereby improving the reuse rate of high-value consumables, and the disassembly is time-saving and efficient, thereby reducing production costs and improving production rhythm.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A nanocrystalline crystallizer copper sleeve quick disassembly device, the nanocrystalline crystallizer has a rotating shaft, the copper sleeve is installed on the rotating shaft, the disassembly device includes a lifting cantilever, a two-dimensional translation platform, a disassembly bracket and an amorphous heating belt, wherein the lifting cantilever is used to lift the rotating shaft above the two-dimensional translation platform, the disassembly bracket is located on the two-dimensional translation platform, the amorphous heating belt is wrapped around the outer wall of the copper sleeve, the amorphous heating belt can heat the copper sleeve, thereby causing the copper sleeve to expand, and the expanded copper sleeve automatically separates from the rotating shaft, and the copper sleeve falls onto the disassembly bracket under the action of gravity.

[0007] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, the lifting cantilever includes a motor, a support column and a crossbeam, one end of the crossbeam is connected to the support column, a motor is provided on the support column, the output end of the motor is connected to the crossbeam, and the motor can drive the crossbeam to rotate around the support column and lift and lower along the support column.

[0008] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, a heat insulation pad is laid on the disassembly bracket, and the heat insulation pad is made of a heat-insulating refractory material.

[0009] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, it also includes an electric heating control cabinet, the amorphous heating belt is connected to the electric heating control cabinet, the electric heating control cabinet can provide power for the amorphous heating belt, and the electric heating control cabinet can control the heating temperature and heating speed of the amorphous heating belt.

[0010] Furthermore, the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device further includes a temperature measuring couple, which is arranged on the outer surface of the side wall of the copper sleeve and is connected to the electric heating control cabinet.

[0011] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, the electric heating control cabinet controls the amorphous heating belt to heat the copper sleeve to 150° C. to 180° C. within 1 minute and keep the temperature for 3 minutes to 5 minutes.

[0012] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, the amorphous heating belt is a flexible amorphous heating belt, and the amorphous heating belt is tightly wound on the outer wall of the copper sleeve in a spiral manner; preferably, the amorphous heating belt starts to wind at the bottom of the side wall of the copper sleeve and is spirally wound to the top of the side wall of the copper sleeve, and the amorphous heating belt completely covers the side wall of the copper sleeve.

[0013] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, the amorphous heating belt includes an amorphous alloy strip, a heat-resistant insulating layer and a lead-out electrode, the heat-resistant insulating layer is made of plastic, and the heat-resistant insulating layer covers the surface of the amorphous alloy strip, the amorphous alloy strip is arranged in an S shape in the length direction of the amorphous heating belt, the amorphous alloy strip extends from one end to the other end in the width direction of the amorphous heating belt, and then extends from the other end to one end in the width direction of the amorphous heating belt until it covers the entire amorphous heating belt, the amorphous alloy strip It is connected to the electric heating control cabinet through the lead-out electrode; preferably, the thickness of the amorphous alloy strip is 10μm~30μm, and the width of the amorphous alloy strip is 4mm~15mm. In terms of mass percentage, the chemical components and contents of the amorphous alloy strip are Ni30~40; Cr8~10; Cu0.5~1; W1~2; Si4~8; B1~2; the rest are Fe and unavoidable impurities; preferably, the thickness of the amorphous alloy strip is 20μm~25μm, and the width of the amorphous alloy strip is 6mm~8mm.

[0014] Furthermore, in the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, it also includes a vacuum pumping device and a liquid nitrogen container, the rotating shaft has a cooling water circuit, and the two ends of the rotating shaft are respectively provided with a water inlet and a water outlet, the water inlet and the water outlet are both connected to the cooling water circuit, the liquid nitrogen container stores liquid nitrogen, the liquid nitrogen container is connected to the water inlet through a pipeline, the liquid nitrogen container has a flow valve, and the vacuum pumping device is connected to the water outlet through a pipeline.

[0015] On the other hand, a method for disassembling a nanocrystalline crystallizer copper sleeve is provided, using the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, comprising the following steps:

[0016] 1) Use a lifting cantilever to hoist the rotating shaft of the nanocrystalline crystallizer, adjust the end face of the rotating shaft to a horizontal state in the standby position, and then use the lifting cantilever to hoist the rotating shaft to the working position, and place the rotating shaft above the disassembly bracket. Place a thermal insulation pad on the upper surface of the disassembly bracket, attach the temperature measuring couple to the center of the outer wall of the copper sleeve, tightly wrap the amorphous heating tape around the copper sleeve, and connect the amorphous heating tape and the thermocouple to the electric heating control cabinet;

[0017] 2) The liquid nitrogen container is connected to the water inlet of the rotating shaft through a pipeline, and the vacuum pumping equipment is connected to the water outlet of the rotating shaft through a pipeline;

[0018] 3) First, close the flow valve of the liquid nitrogen container, turn on the vacuum pumping device to vacuum the entire inner cavity of the rotating shaft, then turn on the heating power of the electric heating control cabinet, and under the control of the electric heating control cabinet, use the amorphous heating belt to heat the copper sleeve through side heating, so that the copper sleeve is heated to 150°C to 180°C within 1 minute and kept warm for 3 minutes to 5 minutes. The copper sleeve expands rapidly while rapidly heating. Turn off the vacuum pumping device, open the flow valve of the liquid nitrogen container, and allow the liquid nitrogen in the liquid nitrogen container to instantly pass through the cooling water channel of the rotating shaft under the action of negative pressure. Under the dual action of the instantaneous contraction of the rotating shaft and the thermal expansion of the copper sleeve, the copper sleeve is automatically separated from the rotating shaft, and the copper sleeve slides freely from the rotating shaft under the action of weight to complete the disassembly;

[0019] 4) Turn off the heating power of the electric heating control cabinet, close the flow valve of the liquid nitrogen container, and remove the amorphous heating belt.

[0020] Analysis shows that the present invention discloses a nanocrystalline crystallizer copper sleeve quick disassembly device and disassembly method. The disassembly device uses a flexible amorphous heating belt to spirally and tightly wrap the outer circumference of the copper sleeve and heat the copper sleeve, so as to achieve stable and rapid in-situ heating of the copper sleeve, ensuring that the copper sleeve will not shrink during the entire disassembly process. The vacuum equipment and the liquid nitrogen container are used to achieve uniform rapid cooling and uniform shrinkage of the rotating shaft. Under the combined effect of the uniform shrinkage of the rotating shaft and the rapid expansion of the copper sleeve, the copper sleeve is automatically separated from the rotating shaft, and the copper sleeve falls onto the disassembly bracket under the action of its own weight. The copper sleeve is disassembled by using the disassembly device without damaging the copper sleeve and the rotating shaft, thereby improving the reuse rate of the copper sleeve and the rotating shaft. In addition, the disassembly takes a short time and is highly efficient, which reduces production costs and improves production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them:

[0022] Figure 1 It is a structural diagram of an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of the structure of the rotating shaft and the copper sleeve according to one embodiment of the present invention.

[0024] Figure 3 for Figure 2 Schematic diagram of the top view structure.

[0025] Figure 4 Schematic diagram of the structure of an amorphous heating belt according to an embodiment of the present invention.

[0026] Explanation of the reference numerals: 1 rotating shaft; 2 copper sleeve; 3 lifting cantilever; 4 motor; 5 support column; 6 crossbeam; 7 two-dimensional translation platform; 8 disassembly bracket; 9 thermal insulation pad; 10 amorphous heating belt; 11 electric heating control cabinet; 12 vacuum equipment; 13 liquid nitrogen container; 14 standby position; 15 working position; 16 amorphous alloy strip; 17 heat-resistant insulation layer; 18 lead-out electrode; 19 temperature measuring coupler; 20 flow valve; 21 water inlet; 22 water outlet. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. Each example is provided by way of explanation of the present invention and is not intended to limit the present invention. Indeed, it will be apparent to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompasses such modifications and variations as come within the scope of the appended claims and their equivalents.

[0028] In the description of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] One or more examples of the present invention are shown in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and the description have been used to refer to like or similar parts of the present invention. As used herein, the terms "first," "second," and "third," etc. are used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of an individual component.

[0030] like Figures 1 to 4 As shown, according to an embodiment of the present invention, a nanocrystalline crystallizer copper sleeve quick disassembly device is provided, and the nanocrystalline crystallizer has a rotating shaft 1, as shown in FIG. Figure 2 and Figure 3 As shown, the copper sleeve 2 is installed on the rotating shaft 1, as shown in FIG. Figure 1As shown, the disassembly device includes a lifting cantilever 3, a two-dimensional translation platform 7, a disassembly bracket 8 and an amorphous heating belt 10, wherein the lifting cantilever 3 is used to lift the rotating shaft 1 to the top of the two-dimensional translation platform 7, the disassembly bracket 8 is located on the two-dimensional translation platform 7, and the amorphous heating belt 10 is wrapped around the outer wall of the copper sleeve 2. The amorphous heating belt 10 can heat the copper sleeve 2, thereby causing the copper sleeve 2 to expand. The expanded copper sleeve 2 automatically separates from the rotating shaft 1, and the rotating shaft 1 falls onto the disassembly bracket 8 under the action of gravity. During the disassembly of the copper sleeve 2, the copper sleeve 2 is heated by the amorphous heating belt 10, and the copper sleeve 2 is heated evenly and expands in the circumferential direction in a consistent manner, ensuring that the copper sleeve 2 and the rotating shaft 1 will not be damaged during the disassembly process, thereby improving the reuse rate of the copper sleeve 2 and the rotating shaft 1, and the disassembly is short and efficient, thereby reducing production costs and improving production rhythm.

[0031] Furthermore, the lifting boom 3 includes a motor 4, a support column 5, and a crossbeam 6. One end of the crossbeam 6 is connected to the support column 5. The support column 5 is provided with a motor 4. The output end of the motor 4 is connected to the crossbeam 6. The motor 4 can drive the crossbeam 6 to rotate around the support column 5 and to rise and fall along the support column 5. One side of the support column 5 is a standby position 14, and the other side of the support column 5 is a working position 15. The two-dimensional translation platform 7 is provided at the working position 15. After the lifting boom 3 lifts the rotating shaft 1, the crossbeam 6 rotates to the standby position 14 to adjust the state of the rotating shaft 1. The crossbeam 6 rotates to the working position 15 to remove the copper sleeve 2.

[0032] Furthermore, a heat-insulating pad 9 is provided on the disassembly bracket 8. The heat-insulating pad 9 is made of a heat-insulating refractory material. The heat-insulating pad 9 can play a heat-insulating role on the heated copper sleeve 2 to prevent scalding accidents.

[0033] Furthermore, an electric heating control cabinet 11 is included, and the amorphous heating belt 10 is connected to the electric heating control cabinet 11. The electric heating control cabinet 11 can provide power to the amorphous heating belt 10 and control the heating temperature and heating speed of the amorphous heating belt 10. This configuration enables precise control of the heating temperature and heating speed of the copper sleeve 2, ensuring that the copper sleeve 2 is heated evenly and expands uniformly in the circumferential direction, thereby ensuring that the copper sleeve 2 will not be damaged during the disassembly process.

[0034] Furthermore, the device further includes a thermocouple 19, which is disposed on the outer surface of the side wall of the copper sleeve 2 and is connected to the electric heating control cabinet 11. The electric heating control cabinet 11 can automatically adjust the heating temperature of the copper sleeve 2 by the amorphous heating belt 10 based on the temperature of the copper sleeve 2 measured by the thermocouple 19, thereby automatically controlling the temperature of the copper sleeve 2 during the disassembly process, ensuring that the copper sleeve 2 is heated evenly and expands uniformly in the circumferential direction.

[0035] Furthermore, the electric heating control cabinet 11 controls the amorphous heating belt 10 to heat the copper sleeve 2 to 150°C~180°C within 1 minute and keep it warm for 3min~5min. The electric heating control cabinet 11 is used to precisely control the heating of the copper sleeve 2, so that the copper sleeve 2 expands rapidly due to heat, and can ensure that the copper sleeve 2 is heated evenly and the expansion amount in the circumferential direction is consistent.

[0036] Furthermore, the amorphous heating tape 10 is a flexible amorphous heating tape, which is tightly wound around the outer wall of the copper sleeve 2 in a spiral manner. The flexible amorphous heating tape is currently the most efficient and fastest heating foil-type flexible heating unit. By tightly winding the flexible amorphous heating tape around the outer wall of the copper sleeve 2, the copper sleeve 2 can be stably and accurately heated in situ, ensuring that the copper sleeve 2 does not shrink during the entire hot-installation process, shortening the removal time of the copper sleeve 2 and improving the efficiency of the copper sleeve 2 removal. The flexible amorphous heating tape can be bent into any arc. By tightly winding it in a spiral manner, it can heat the rotating shaft 1 of the nanocrystalline crystallizer with different tube diameters, overcoming the problem of needing to customize the size of the heater due to the difference in the diameter of the copper sleeve 2, which is high in customization cost and poor in versatility. Preferably, the amorphous heating tape 10 starts to be wound at the bottom of the side wall of the copper sleeve 2 and is wound in a spiral manner to the top of the side wall of the copper sleeve 2. The two adjacent circles of the amorphous heating tape 10 are in close contact with each other, and the amorphous heating tape 10 completely covers the side wall of the copper sleeve 2. This arrangement ensures that the copper sleeve 2 is heated evenly and expands in a consistent manner in the circumferential direction.

[0037] Furthermore, if Figure 4As shown, the amorphous heating belt 10 includes an amorphous alloy strip 16, a heat-resistant insulating layer 17 and a lead-out electrode 18. The heat-resistant insulating layer 17 is made of plastic, and the component of the plastic is polystyrene or polyamide. The heat-resistant insulating layer 17 covers the surface of the amorphous alloy strip 16. The amorphous alloy strip 16 is arranged in an S shape in the length direction of the amorphous heating belt 10. The amorphous alloy strip 16 extends from one end to the other end in the width direction of the amorphous heating belt 10, and then extends from the other end to one end in the width direction of the amorphous heating belt 10 until it covers the entire amorphous heating belt 10. The amorphous alloy strip 16 is connected to the electric heating control cabinet 11 through the lead-out electrode 18. Preferably, the thickness of the amorphous alloy strip 16 is 10 μm to 30 μm, and the width of the amorphous alloy strip 16 is 4 mm to 25 mm. In terms of mass percentage, the chemical composition and content of the amorphous alloy strip 16 are: 30-40 Ni; 8-10 Cr; 0.5-1 Cu; 1-2 W; 4-8 Si; 1-2 B; the remainder being Fe and unavoidable impurities. Ni improves the high-temperature oxidation resistance and toughness of the amorphous alloy strip 16, Cr improves its high-temperature corrosion resistance, Cu adjusts the resistivity of the amorphous alloy strip 16, Si and B are amorphous-forming elements that form amorphous structures, and W improves the high-temperature stability of the amorphous alloy strip 16. The above parameters result in the amorphous alloy strip 16 having a high resistivity of 180-210 μΩ.cm. Preferably, the thickness of the amorphous alloy strip 16 is 20 μm to 25 μm, and the width of the amorphous alloy strip 16 is 6 mm to 8 mm. The above parameter settings enable the amorphous alloy strip 16 to have an ultra-high specific surface area of 8 to 10 m2 / kg, thereby enabling the amorphous heating belt 10 to achieve high-power ultra-fast heating below 250°C.

[0038] Furthermore, it also includes a vacuum pumping device 12 and a liquid nitrogen container 13. A cooling water circuit is provided in the rotating shaft 1. A water inlet 21 and a water outlet 22 are respectively provided at both ends of the rotating shaft 1. The water inlet 21 and the water outlet 22 are both connected to the cooling water circuit in the rotating shaft 1. Liquid nitrogen is stored in the liquid nitrogen container 13. The liquid nitrogen container 13 is connected to the water inlet 21 through a pipeline. The liquid nitrogen container 13 has a flow valve 20, and the vacuum pumping device 12 is connected to the water outlet 22 through a pipeline. When the copper sleeve 2 is disassembled, the cooling water channel in the rotating shaft 1 is first evacuated by using the vacuum device 12, and then the copper sleeve 2 is heated by the amorphous heating belt 10 to rapidly expand the copper sleeve 2. Then, the vacuum device 12 is closed, and the flow valve 20 of the liquid nitrogen container 13 is opened. The liquid nitrogen in the liquid nitrogen container 13 instantly passes through the cooling water channel in the rotating shaft 1 under the action of negative pressure, and the liquid nitrogen rotates the shaft 1 to cool it and shrink it instantly. Under the dual effects of the instantaneous shrinkage of the rotating shaft 1 and the thermal expansion of the copper sleeve 2, the copper sleeve 2 is automatically separated from the inner core of the rotating shaft 1, so that the rotating shaft 1 and the copper sleeve 2 are not damaged during the disassembly process, thereby improving the reuse rate of the rotating shaft 1 and the copper sleeve 2, and the disassembly takes a short time and is highly efficient, thereby reducing production costs and improving production rhythm.

[0039] A main water inlet channel and a main water outlet channel are provided at both ends of the rotating shaft 1. A water diversion seat is provided on the main shaft of the rotating shaft 1, and an inlet diversion trough and an outlet water collection trough are provided on the water diversion seat. The inlet diversion trough is provided with an inlet diversion hole, and the outlet water collection trough is provided with an outlet water collection hole; a plurality of axial water channels are provided on the outer circumference of the inner core of the rotating shaft, and the water inlet 21, the main water inlet channel, the water inlet diversion hole, the axial water channel, the water outlet collection hole, the main water outlet channel and the water outlet 22 are connected in sequence to form a cooling water channel in the rotating shaft 1; the cooling medium liquid nitrogen is dispersed into the axial water channel through the water inlet 21 and the water inlet diversion hole, and the liquid nitrogen in the axial water channel is gathered into the main water outlet channel by the water outlet collection hole and discharged from the water outlet 22. The axial water channel area on the outer peripheral surface of the inner core of the rotating shaft 1 is the largest, the residence time of the liquid nitrogen flowing through the axial water channel is the longest, the liquid nitrogen contacts the rotating shaft 1 most fully, and the liquid nitrogen takes away the most heat, ensuring that the inner core surface of the rotating shaft 1 is evenly cooled, thereby causing the rotating shaft 1 to shrink significantly in a short time.

[0040] The present invention also discloses a method for disassembling a nanocrystalline crystallizer copper sleeve, which utilizes the above-mentioned nanocrystalline crystallizer copper sleeve quick disassembly device, comprising the following steps:

[0041] 1) Use the lifting cantilever 3 to lift the rotating shaft 1 of the nanocrystalline crystallizer, adjust the end face of the rotating shaft 1 to a horizontal state at the standby position 14, and then use the lifting cantilever 3 to lift the rotating shaft 1 to the working position 15, and make the rotating shaft 1 be located above the disassembly bracket 8 of the two-dimensional translation platform 7, place the thermal insulation pad 9 on the upper surface of the disassembly bracket 8, adjust the end face of the rotating shaft 1 to a horizontal state, attach the temperature measuring couple 19 to the center of the outer wall of the copper sleeve 2, tightly wrap the amorphous heating belt 10 around the copper sleeve 2, and connect the amorphous heating belt 10 and the thermocouple to the electric heating control cabinet 11.

[0042] 2) The liquid nitrogen container 13 is connected to the water inlet 21 of the rotating shaft 1 through a pipeline, and the vacuum pumping device 12 is connected to the water outlet 22 of the rotating shaft 1 through a pipeline.

[0043] 3) First, close the flow valve 20 of the liquid nitrogen container 13, turn on the vacuum pumping device 12 to vacuum the entire inner cavity of the rotating shaft, then turn on the heating power supply of the electric heating control cabinet 11, and under the control of the electric heating control cabinet 11, use the amorphous heating belt 10 to heat the copper sleeve 2 by side heating, so that the copper sleeve 2 is heated to 150°C to 180°C within 1 minute and kept warm for 3min to 5min. The copper sleeve 2 expands rapidly while rapidly heating. Close the vacuum pumping device 12, open the flow valve 20 of the liquid nitrogen container 13, and allow the liquid nitrogen in the liquid nitrogen container 13 to instantly pass through the cooling water channel of the rotating shaft 1 under the action of negative pressure. The copper sleeve 2 is separated from the rotating shaft 1 under the dual action of the instantaneous contraction of the rotating shaft 1 and the thermal expansion of the copper sleeve 2. The copper sleeve 2 slides freely from the rotating shaft 1 under the action of weight to complete the disassembly;

[0044] 4) Turn off the heating power of the electric heating control cabinet 11, close the flow valve 20 of the liquid nitrogen container 13, and remove the amorphous heating belt 10.

[0045] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0046] A nanocrystalline crystallizer copper sleeve rapid disassembly device and method are disclosed. The disassembly device utilizes a flexible amorphous heating tape 10 to tightly spirally wrap around the outer circumference of the copper sleeve 2 and heat the sleeve 2, achieving stable and rapid in-situ heating of the sleeve 2 and preventing shrinkage during the disassembly process. A vacuum pump 12 and a liquid nitrogen container 13 achieve uniform rapid cooling and shrinkage of the rotating shaft 1. The uniform shrinkage of the shaft 1 and the rapid expansion of the copper sleeve 2 combine to automatically separate the sleeve 2 from the shaft 1 and drop under its own weight onto a disassembly bracket 8. Disassembly of the copper sleeve 2 using this disassembly device does not damage the sleeve 2 or the shaft 1, thereby increasing their reuse rate. Disassembly is also time-efficient and efficient, reducing production costs and improving production efficiency.

[0047] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for disassembling a copper sleeve of a nanocrystalline crystallizer, wherein the nanocrystalline crystallizer has a rotating shaft and the copper sleeve is installed on the rotating shaft, characterized in that: The disassembly method is implemented by using a disassembly device, which includes a lifting cantilever, a two-dimensional translation platform, a disassembly bracket and an amorphous heating belt, wherein: The lifting cantilever is used to lift the rotating shaft to above the two-dimensional translation platform, and the disassembly bracket is located on the two-dimensional translation platform. The amorphous heating tape is wound around the outer wall of the copper sleeve, and the amorphous heating tape can heat the copper sleeve, thereby causing the copper sleeve to expand. After expansion, the copper sleeve automatically separates from the rotating shaft, and the copper sleeve falls onto the disassembly bracket under the action of gravity. The disassembly device further includes a vacuum pumping device and a liquid nitrogen container. A cooling water circuit is provided in the rotating shaft. A water inlet and a water outlet are respectively provided at both ends of the rotating shaft. The water inlet and the water outlet are both connected to the cooling water circuit. Liquid nitrogen is stored in the liquid nitrogen container. The liquid nitrogen container is connected to the water inlet through a pipeline. The liquid nitrogen container has a flow valve. The vacuum pumping device is connected to the water outlet through a pipeline. The disassembly method comprises the following steps: Step 1: Use a lifting cantilever to hoist the rotating shaft of the nanocrystalline crystallizer, adjust the end face of the rotating shaft to a horizontal state in the standby position, and then use the lifting cantilever to hoist the rotating shaft to the working position, and place the rotating shaft above the disassembly bracket. Place a thermal insulation pad on the upper surface of the disassembly bracket, attach the temperature measuring couple to the center of the outer wall of the copper sleeve, tightly wrap the amorphous heating tape around the copper sleeve, and connect the amorphous heating tape and the thermocouple to the electric heating control cabinet; Step 2: Connect the liquid nitrogen container to the water inlet of the rotating shaft through a pipeline, and connect the vacuum pumping equipment to the water outlet of the rotating shaft through a pipeline; Step 3, first close the flow valve of the liquid nitrogen container, turn on the vacuum pumping equipment to vacuum the entire inner cavity of the rotating shaft, then turn on the heating power supply of the electric heating control cabinet, and under the control of the electric heating control cabinet, use the amorphous heating belt to heat the copper sleeve by side heating, so that the copper sleeve is heated to 150°C~180°C within 1 minute and kept warm for 3min~5min. The copper sleeve expands rapidly while rapidly heating. Close the vacuum pumping equipment, open the flow valve of the liquid nitrogen container, and allow the liquid nitrogen in the liquid nitrogen container to instantly pass through the cooling water channel of the rotating shaft under the action of negative pressure. Under the dual action of the instantaneous contraction of the rotating shaft and the thermal expansion of the copper sleeve, the copper sleeve is automatically separated from the rotating shaft, and the copper sleeve slides freely from the rotating shaft under the action of weight to complete the disassembly; Step 4: Turn off the heating power of the electric heating control cabinet, close the flow valve of the liquid nitrogen container, and remove the amorphous heating belt.

2. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 1, characterized in that: The lifting cantilever includes a motor, a support column and a beam. One end of the beam is connected to the support column. A motor is provided on the support column. The output end of the motor is connected to the beam. The motor can drive the beam to rotate around the support column and to rise and fall along the support column.

3. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 1, characterized in that: A heat-insulating pad is laid on the disassembly bracket, and the heat-insulating pad is made of a heat-insulating refractory material.

4. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 1, characterized in that: The disassembly device also includes an electric heating control cabinet, and the amorphous heating belt is connected to the electric heating control cabinet. The electric heating control cabinet can provide power for the amorphous heating belt, and the electric heating control cabinet can control the heating temperature and heating speed of the amorphous heating belt.

5. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 4, characterized in that: The disassembly device further comprises a temperature measuring couple, which is arranged on the outer surface of the side wall of the copper sleeve. The temperature measuring couple is connected to the electric heating control cabinet.

6. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 4, characterized in that: The electric heating control cabinet controls the amorphous heating belt to raise the temperature of the copper sleeve to 150° C. to 180° C. within 1 minute and keep the temperature for 3 minutes to 5 minutes.

7. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 1, characterized in that: The amorphous heating belt is a flexible amorphous heating belt, and the amorphous heating belt is tightly wound on the outer wall of the copper sleeve in a spiral manner; The amorphous heating belt starts to wind at the bottom of the side wall of the copper sleeve and winds to the top of the side wall of the copper sleeve in a spiral manner. The amorphous heating belt completely covers the side wall of the copper sleeve.

8. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 4, characterized in that: The amorphous heating belt includes an amorphous alloy strip, a heat-resistant insulating layer and a lead-out electrode. The heat-resistant insulating layer is made of plastic and covers the surface of the amorphous alloy strip. The amorphous alloy strip is arranged in an S shape in the length direction of the amorphous heating belt. The amorphous alloy strip extends from one end to the other end in the width direction of the amorphous heating belt, and then extends from the other end to one end in the width direction of the amorphous heating belt until it covers the entire amorphous heating belt. The amorphous alloy strip is connected to the electric heating control cabinet through the lead-out electrode.

9. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 8, characterized in that: The thickness of the amorphous alloy strip is 10μm to 30μm, and the width of the amorphous alloy strip is 4mm to 25mm. In terms of mass percentage, the chemical components and contents of the amorphous alloy strip are Ni30~40; Cr8~10; Cu0.5~1; W1~2; Si4~8; B1~2; and the rest are Fe and unavoidable impurities.

10. The method for disassembling the copper sleeve of the nanocrystalline crystallizer according to claim 9, characterized in that: The thickness of the amorphous alloy strip is 20 μm to 25 μm, and the width of the amorphous alloy strip is 6 mm to 8 mm.

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