Segregation refining equipment

Abstract

The invention belongs to the technical field of high-purity aluminum production, and particularly relates to segregation refining equipment which comprises a steel furnace shell, a heat preservation lining and a crucible which are arranged in a foundation pit. A rack is arranged above the foundation pit, and a moving trolley is arranged on the rack; a lifting mechanism is arranged on the moving trolley and connected with a graphite shaft through a connecting assembly, and the bottom end of the graphite shaft is integrally connected with an ingot pressing graphite cone. The connecting assembly comprises a base plate and an inserting rod integrally connected with the base plate, a plurality of lifting hooks are evenly distributed on the circumference of the base plate, the inserting rod is slidably arranged in the graphite shaft, a plurality of first inserting holes are formed in the inserting rod in the length direction, and second inserting holes matched with the first inserting holes are formed in the upper end of the graphite shaft; and the lifting hook is detachably connected with the crucible through a steel wire rope. According to the equipment, the ingot pressing graphite cone can ascend and descend to realize segregation operation by adopting a lifting mechanism in a limited space height, meanwhile, the equipment has a crucible hoisting function, and compact layout of the segregation equipment is realized by simplifying single equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of high-purity aluminum production, and in particular relates to segregation refining equipment. Background Art

[0002] As the purity of aluminum increases, its corrosion resistance, plasticity, conductivity, reflectivity and other properties have been greatly improved; because of the excellent performance of high-purity refined aluminum, its application range is becoming increasingly wide.

[0003] At present, the purification of refined aluminum (AL ≥ 99.998%) requires the use of a large refined aluminum segregation furnace. For example, the patent with the publication number "CN203869502U" discloses a segregation furnace, in which an insulation lining is built on the inner side of the steel furnace shell, a graphite crucible is placed in the insulation lining, a heating element group is embedded between the inner side of the insulation lining and the graphite crucible, and a pressed graphite cone is installed above the graphite crucible, and the upper part of the pressed graphite cone is connected to the graphite shaft, the motor and the turbine worm mechanism; a bracket is arranged on the outer side of the steel furnace shell, and a mobile trolley is connected to the upper end of the bracket, and a limit switch is arranged on the inner vertical beam of the frame of the mobile trolley, and a counter is connected to the motor and the turbine worm mechanism. The frame of the mobile trolley includes a lower crossbeam, a vertical beam and an upper crossbeam; an aluminum crystal scraping plate is installed on the crossbeam. This utility model is used to produce high-purity refined aluminum, which can improve the production capacity of equipment and significantly reduce the construction investment, production energy consumption and maintenance costs of enterprises.

[0004] However, the segregation refining equipment in the prior art similar to the above has the following major disadvantages:

[0005] The equipment is huge and the single equipment is complex. It is necessary to design multiple driving mechanisms to realize functions such as graphite cone segregation lifting and lowering, crucible lifting and disassembly, and aluminum crystal scraper plate extension and scraping. Therefore, it is necessary to design various lifting mechanisms or lifting mechanisms on one device, which further complicates the single equipment and is not conducive to the flexible layout of the series production segregation furnace. Summary of the invention

[0006] In view of the technical problems existing in the background technology, the present invention provides a segregation refining device.

[0007] To achieve the above purpose, the technical solution provided by the present invention is:

[0008] A segregation refining device, comprising a steel furnace shell arranged in a foundation pit, a heat-insulating lining arranged on the inner side of the steel furnace shell, a crucible detachably arranged in the heat-insulating lining, and a plurality of layers of heating components inlaid on the inner side of the heat-insulating lining; a frame is arranged above the foundation pit, a track is arranged on the upper end of the frame, and a moving trolley is arranged on the track; a lifting mechanism is arranged on the moving trolley, the lifting mechanism is connected to a graphite shaft through a connecting component, and a pressing stone is integrally connected to the bottom end of the graphite shaft The graphite cone body is provided with a plurality of overflow holes on its circumference; the connecting assembly comprises a chassis and a plug rod integrally connected to the chassis, a plurality of hooks are evenly distributed on the circumference of the chassis, a central hole is provided inside the graphite shaft, the plug rod is slidably arranged in the central hole, a plurality of first plug holes are provided on the plug rod along the length direction, a second plug hole cooperating with the plug hole is provided on the upper end of the graphite shaft, the first plug hole and the second plug hole are butt-jointed and fixed by inserting a pin; the hook is detachably connected to the crucible through a steel wire rope.

[0009] Optionally, hydraulic cylinders are symmetrically arranged on both sides of the frame, and the ends of the piston rods of the hydraulic cylinders are connected to arc-shaped scraper assemblies. The two hydraulic cylinders can drive the scraper assemblies to hold the outer wall of the graphite shaft.

[0010] Optionally, the scraper assembly is a semicircular scraper, and two scraper can be spliced ​​into a cylinder.

[0011] Optionally, the scraper assembly includes a scraper 2, which includes a connecting block and a scraping block integrally connected to the connecting block, the scraper block is arranged in an arc shape, and the inner wall of the scraper block is provided with a scraping groove; the bottom end of the scraper block is provided with an avoidance notch; the scraper 2 is provided with two pieces, and the two scrapers 2 are centrally symmetrically arranged; the two scrapers 2 are respectively connected to the hydraulic cylinder, the two scraper blocks are staggered, the two avoidance notches are staggered, and the scraper block of one scraper 2 is docked with the avoidance notch of the other scraper 2; the scraper block can be arranged to tightly embrace the outer wall of the graphite shaft or the plug rod.

[0012] Optionally, a connection plate is provided at the upper end of the graphite shaft, a through hole is opened on the connection plate and a retaining screw is connected in the through hole, and the retaining screw is arranged close to the end of the pin.

[0013] Optionally, the chassis is made of heat-insulating material.

[0014] Optionally, the heating components are arranged in three layers along the height direction, and each layer includes a plurality of heating components uniformly embedded on the inner wall of the thermal insulation lining.

[0015] Optionally, a conical hole is provided on the inner wall of the upper end of the thermal insulation lining, a steel jacket is detachably provided on the outer wall of the crucible, a conical portion matching the conical hole is provided on the upper end of the steel jacket, the bottom end of the steel jacket is supported on the bottom wall of the thermal insulation lining, and the heating assembly is arranged between the steel jacket and the thermal insulation lining; a plurality of lifting ears are provided on the upper end of the conical portion, and the lifting ears and the hooks are connected by steel wire ropes.

[0016] Optionally, the lifting mechanism is a turbine and worm mechanism, including a driving motor, a turbine assembly and a worm assembly. The turbine assembly and the worm assembly are connected for transmission. The bottom end of the worm assembly is connected to the connecting assembly. A guide rod is provided at the bottom end of the worm assembly, and the guide rod can be slidably set in a slide groove of the frame.

[0017] Optionally, the lifting mechanism is a hydraulic cylinder mechanism, and the hydraulic cylinder mechanism and the connecting assembly are connected for transmission.

[0018] The present invention has the following advantages and beneficial effects:

[0019] The segregation refining equipment in the present invention can greatly improve the lifting stroke of the lifting mechanism and simplify the structure of the segregation equipment. The lifting mechanism is connected to the graphite shaft through a connecting assembly, and the bottom end of the graphite shaft is integrally connected with a pressed graphite cone. The connecting assembly includes a plug rod. When the bottom end socket of the plug rod and the socket of the graphite shaft are matched and connected, the lifting mechanism can drive the pressed graphite cone to lift and lower to achieve segregation operation; when the crucible needs to be lifted, the upper end socket of the plug rod and the socket of the graphite shaft are matched and connected, and the hook is detachably connected to the crucible through the wire rope, and sufficient lifting stroke is reserved for the lifting mechanism. The pressed graphite cone and the crucible are lifted out of the foundation pit as a whole through the lifting mechanism. Such a design can realize the lifting and lowering of the pressed graphite cone to achieve segregation operation within a limited space height by using a lifting mechanism, and at the same time have the function of lifting the crucible, without the need to use equipment such as a crane to lift the crucible. By simplifying the single equipment, the segregation furnace is flexibly arranged, and the compact layout design of the segregation equipment is further realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural diagram of the segregation refining equipment provided by the present invention during segregation;

[0021] Figure 2 A structural diagram of the post-segregation scraping of the segregation refining equipment provided by the present invention;

[0022] Figure 3 A structural diagram of a post-segregation hoisting crucible of the segregation refining equipment provided by the present invention;

[0023] Figure 4 A structural diagram of lifting out the crucible of the segregation refining equipment provided by the present invention;

[0024] Figure 5 A structural diagram of the crucible, thermal insulation lining and heating assembly provided by the present invention;

[0025] Figure 6 for Figure 1 A partial enlarged view of point a in the middle;

[0026] Figure 7 for Figure 3 A partial enlarged view of point b in the middle;

[0027] Figure 8 The structure of the scraper 2 provided by the present invention Figure 1 ;

[0028] Fig. 9 The structure of the scraper 2 provided by the present invention Figure 2 ;

[0029] Fig.10 A front view of the scraper 2 provided by the present invention;

[0030] Fig.11 A structural diagram of the scraper 2 provided by the present invention tightly hugging the graphite shaft;

[0031] Fig.12 A front view of the scraper 2 provided by the present invention tightly hugging the graphite shaft;

[0032] Fig.13 A structural diagram of the scraper 2 provided by the present invention tightly hugging the plug rod;

[0033] Fig.14 A front view of the scraper 2 provided by the present invention tightly hugging the plug rod;

[0034] Fig.15 for Fig.14 A top view of

[0035] Icons: 1-steel furnace shell, 11-insulation lining, 12-conical hole, 13-heating component, 2-steel jacket, 21-conical part, 22-lifting ear, 23-wire rope, 3-crucible, 31-high purity aluminum ingot, 32-impure aluminum liquid, 4-ingot graphite cone, 41-overflow hole, 5-graphite shaft, 51-center hole, 511-jack 2, 52-connecting plate, 53-retracting screw, 54-latch, 6- Frame, 61-track, 62-hydraulic cylinder, 63-piston rod, 7-mobile trolley, 71-track wheel, 72-drive motor, 73-turbine assembly, 74-worm assembly, 75-guide rod, 76-chassis, 77-hook, 78-insertion rod, 781-jack one, 8-scraper one, 9-scraper two, 91-connecting block, 92-scraping block, 93-scraping groove, 94-avoidance gap, 95-threaded hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] like Figures 1 to 7 As shown, a segregation refining device comprises a steel furnace shell 1 arranged in a foundation pit, a heat-insulating lining 11 is arranged inside the steel furnace shell 1, a crucible 3 is detachably arranged inside the heat-insulating lining 11, and a plurality of layers of heating components 13 are embedded inside the heat-insulating lining 11. In the present invention, the crucible 3, the steel furnace shell 1, and the heat-insulating lining 11 are all arranged at the lower part of the foundation, providing a prerequisite for the compact layout of the segregation device.

[0040] As a preferred method, the heating components 13 are arranged in three layers along the height direction, and each layer includes a plurality of heating components 13 evenly embedded on the inner wall of the thermal insulation lining 11, so that temperature regulation can be achieved in layers at different heights.

[0041] like Figures 1 to 7 As shown, a frame 6 is arranged above the foundation pit, a track 61 is arranged at the upper end of the frame 6, and a moving trolley 7 is arranged on the track 61. The moving trolley 7 adopts the existing technology, which generally includes components such as a motor and wheels 71, and can automatically move on the track 61.

[0042] like Figures 1 to 7As shown, the mobile trolley 7 is provided with a lifting mechanism, which is connected to the graphite shaft 5 through a connecting assembly, and the bottom end of the graphite shaft 5 is integrally connected with a pressed graphite cone 4, and a plurality of overflow holes 41 are provided on the circumference of the pressed graphite cone 4. The connecting assembly includes a chassis 76 and a plug rod 78 integrally connected to the chassis 76, and a plurality of hooks 77 are evenly distributed on the circumference of the chassis 76. A central hole 51 is provided inside the graphite shaft 5, and the plug rod 78 is slidably arranged in the central hole 51. The plug rod 78 is provided with a plurality of sockets 1 781 along the length direction, and a socket 2 511 matching the socket 1 781 is provided at the upper end of the graphite shaft 5, and the socket 1 781 and the socket 2 511 are docked and fixed by inserting a latch 54, thereby fixing the plug rod 78 and the graphite shaft 5. The hook 77 is detachably connected to the crucible 3 through a steel wire rope 23.

[0043] Furthermore, a connection plate 52 is provided at the upper end of the graphite shaft 5, a through hole is formed on the connection plate 52 and a stop screw 53 is connected in the through hole, and the stop screw 53 is arranged close to the end of the latch 54, so as to further ensure the reliability of the connection between the plug rod 78 and the graphite shaft 5.

[0044] Furthermore, the bottom plate 76 is made of a heat-insulating material to thermally insulate the graphite shaft 5 from the connecting components and the lifting mechanism, thereby reducing heat loss in the crucible 3 .

[0045] Furthermore, the upper inner wall of the thermal insulation lining 11 is provided with a tapered hole 12, the outer wall of the crucible 3 is detachably provided with a steel jacket 2, the upper end of the steel jacket 2 is provided with a tapered portion 21 that matches the tapered hole 12, the bottom end of the steel jacket 2 is supported on the bottom wall of the thermal insulation lining 11, and the heating assembly 13 is provided between the steel jacket 2 and the thermal insulation lining 11; the upper end of the tapered portion 21 is provided with a plurality of lifting ears 22, and the lifting ears 22 and the hook 77 are connected by a steel wire rope 23. With such a design, the steel jacket 2 can be used to protect the crucible 3, ensuring safe disassembly and assembly of the crucible 3, and at the same time, the steel jacket 2 can be detachably installed in the thermal insulation lining 11, and a heating cavity is formed with the thermal insulation lining 11, and the heating assembly 13 is used for heating to achieve temperature regulation of the crucible 3 furnace. Furthermore, the design of the tapered portion 21 on the steel jacket 2 can fit tightly against the inner wall of the thermal insulation lining 11 to avoid heat loss.

[0046] like Figure 1 As shown, when the bottom end socket of the insertion rod 78 is connected with the socket of the graphite shaft 5, the lifting mechanism can be used to drive the pressed graphite cone 4 to move up and down in the crucible 3 to achieve segregation operation.

[0047] like Figure 2 As shown, after the segregation is completed, the pressed graphite cone 4 is lifted away from the crucible 3 by the lifting mechanism.

[0048] like Figure 3As shown, when the crucible 3 needs to be lifted, the upper end socket of the insertion rod 78 is matched with the socket of the graphite shaft 5, that is, the insertion rod 78 is fully extended into the graphite shaft 5, and the hook 77 is detachably connected to the crucible 3 through the wire rope 23, and sufficient lifting stroke is reserved for the lifting mechanism. The pressed graphite cone 4 and the crucible 3 are lifted out of the foundation pit as a whole through the lifting mechanism.

[0049] The segregation refining equipment of the present invention can greatly increase the lifting stroke of the lifting mechanism and simplify the structure of the segregation equipment. Such a design can realize the lifting and lowering of the pressed graphite cone 4 to realize the segregation operation within a limited space height by using a lifting mechanism, and at the same time has the function of lifting the crucible 3, and no longer needs to use equipment such as a crane to lift out the crucible 3. By simplifying the single equipment, the segregation furnace is flexibly laid out, and the compact layout design of the segregation equipment is further realized.

[0050] Example 2

[0051] Furthermore, in order to realize the function of lifting the crucible 3 after segregation and to scrape off the aluminum crystals adhering to the graphite shaft 5 during segregation, an optimized design is performed.

[0052] like Figure 1-4 As shown, hydraulic cylinders 62 are symmetrically arranged on both sides of the frame 6, and the ends of the piston rods 63 of the hydraulic cylinders 62 are connected to arc-shaped scraper assemblies. The two hydraulic cylinders 62 can drive the scraper assemblies to hold the outer wall of the graphite shaft 5 tightly.

[0053] When it is necessary to scrape off the aluminum crystals adhered to the graphite shaft 5, the two hydraulic cylinders 62 drive the scraper assembly to fit the outer wall of the graphite shaft 5, but cannot affect the lifting of the graphite shaft 5. Then the lifting mechanism lifts the pressed graphite cone 4, and the graphite shaft 5 is lifted synchronously. Through the limiting of the scraper assembly, the aluminum crystals adhered to the outer wall of the graphite shaft 5 are scraped off, fall on the surface of the pressed graphite cone 4, and finally fall into the crucible 3.

[0054] When the aluminum crystals adhering to the graphite shaft 5 are scraped off (such as Figure 3As shown), at this time, the scraper assembly is located at the bottom of the graphite shaft 5 and is close to the graphite cone 4 of the ingot. At this time, the scraper assembly is driven by the hydraulic cylinder 62 to tightly hold the outer wall of the graphite shaft 5, and the graphite shaft 5 is tightly fixed. The latch 54 can be removed to release the graphite shaft 5 and the plug rod 78, and then the lifting mechanism is controlled to descend, driving the plug rod 78 to descend along the center hole 51 of the graphite shaft 5. During this period, the graphite shaft 5 is fixed and is held and suspended by the scraper assembly until the upper end socket of the plug rod 78 and the socket of the graphite shaft 5 are matched and connected, that is, the plug rod 78 is completely inserted into the graphite shaft 5, and then the latch 54 is inserted to fix the plug rod 78 and the graphite shaft 5, and then the hook 77 is used to detachably connect with the crucible 3 through the wire rope 23. Then the hydraulic cylinder 62 contracts to release the grip on the graphite shaft 5, and the lifting mechanism starts to lift, and the graphite cone 4 of the ingot and the crucible 3 are hoisted out of the foundation pit as a whole. During the lifting process, the holding assembly can be controlled to fit against the outer wall of the crucible 3 to prevent the crucible 3 from shaking during the lifting process.

[0055] It can be seen that the scraper assembly designed in the present invention has the functions of scraping off the aluminum crystals on the surface of the graphite shaft 5 and clamping the graphite shaft 5 to realize the adjustment and disassembly of the graphite shaft 5 and the insertion rod 78. After scraping off the crystals, the graphite shaft 5 can be directly clamped, and the relative positions of the graphite shaft 5 and the insertion rod 78 can be adjusted to carry out the next step of lifting out the crucible 3, which greatly simplifies the layout of the segregation equipment, reduces the parts of the segregation equipment, and realizes the compact layout design of the segregation equipment.

[0056] Example 3

[0057] like Figure 1-6 As shown, as a preferred embodiment of the present invention, the scraper assembly is a semicircular scraper 8, and two scrapers 8 can be spliced ​​into a cylinder and set tightly on the outer wall of the graphite shaft 5.

[0058] Example 4

[0059] Since the outer diameter of the graphite shaft 5 is larger than the outer diameter of the insertion rod 78, the scraper assembly in Example 3 can be attached to the surface of the graphite shaft 5 when the graphite shaft 5 is raised or lowered to achieve the function of limiting and guiding. However, when the insertion rod 78 is located at the scraper assembly position, the scraper assembly is located outside the insertion rod 78 and cannot be tightly attached to the outer wall of the insertion rod 78, so it does not have the function of limiting and guiding the lifting and lowering of the insertion rod 78, so further optimization design is carried out.

[0060] like Figure 8-15As shown, the scraper assembly includes a scraper 2 9, and the scraper 2 9 includes a connecting block 91 and a scraping block 92 integrally connected to the connecting block 91. The connecting block 91 is provided with a threaded hole 95 inside, and is threadedly connected to the hydraulic cylinder 62 and the piston rod 63 through the threaded hole 95. The scraping block 92 is arranged in an arc shape, and a scraping groove 93 is arranged on the inner wall of the scraping block 92. The scraping block 92 can be closely attached to the outer wall of the graphite shaft 5, so as to scrape the aluminum crystals on the outer wall of the graphite shaft 5 and hold the graphite shaft 5 tightly. The bottom end of the scraping block 92 is provided with an avoidance notch 94. There are two scrapers 9, and the two scrapers 9 are symmetrically arranged in the center; the two scrapers 9 are respectively connected to the hydraulic cylinder 62, the two scraping blocks 92 are staggered, the two avoidance notches 94 are staggered, and the scraping blocks 92 of one scraper 9 are docked with the avoidance notch 94 of the other scraper 9; the scraping blocks 92 can be arranged to tightly hold the outer wall of the graphite shaft 5 or the insertion rod 78.

[0061] like Fig.11 , 12 As shown, in this state, the scraping block 92 is set close to the outer wall of the graphite shaft 5, and the scraping blocks 92 of the two scrapers 9 are combined into a ring, which can completely scrape off the aluminum crystals adhered to the outer wall of the graphite shaft 5; and when the scraping block 92 completely hugs the outer wall of the graphite shaft 5, the position of the graphite shaft 5 and the insertion rod 78 can be adjusted.

[0062] like Figure 13-15 As shown, in this state, the scraper block 92 is set close to the outer wall of the plug rod 78, and the plug rod 78 and the scraper groove 93 of the scraper block 92 are partially tangent. The scraper block 92 is enclosed into an ellipse, and the plug rod 78 is guided to limit the lifting and lowering, which can further ensure the guiding accuracy of the lifting and lowering of the segregation equipment. The design of this scraper assembly can realize the function of scraping aluminum crystals on the outer wall of the graphite shaft 5, can realize the function of holding and fixing the graphite shaft 5, can be close to the graphite shaft 5 to realize the function of limiting the lifting and lowering of the graphite shaft 5, and can also be close to the plug rod 78 to realize the function of limiting the lifting and lowering of the plug rod 78, ensuring that the lifting and lowering guidance of the lifting mechanism can be limited in the entire lifting stroke.

[0063] Example 5

[0064] As a preferred embodiment of the present invention, the lifting mechanism is a turbine-worm gear mechanism, including a driving motor 72, a turbine assembly 73 and a worm assembly 74. The turbine assembly 73 and the worm assembly 74 are connected and driven in cooperation. The bottom end of the worm assembly 74 is connected to the connecting assembly. A guide rod 75 is provided at the bottom end of the worm assembly 74. The guide rod 75 is slidably arranged in the slide groove of the frame 6, and the lifting function is realized by the turbine-worm gear mechanism.

[0065] As another preferred embodiment of the present invention, the lifting mechanism is a hydraulic cylinder mechanism, the hydraulic cylinder mechanism and the connecting assembly are connected for transmission, and the lifting function is achieved by hydraulic lifting.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A segregation refining equipment, characterized in that : It comprises a steel furnace shell arranged in a foundation pit, wherein a heat-insulating lining is arranged on the inner side of the steel furnace shell, a crucible is detachably arranged in the heat-insulating lining, and a plurality of layers of heating components are inlaid on the inner side of the heat-insulating lining; A frame is arranged above the foundation pit, a track is arranged at the upper end of the frame, and a moving trolley is arranged on the track; a lifting mechanism is arranged on the moving trolley, and the lifting mechanism is connected to the graphite shaft through a connecting assembly, and a pressed graphite cone is integrally connected to the bottom end of the graphite shaft, and a plurality of overflow holes are opened on the circumference of the pressed graphite cone; The connecting assembly includes a chassis and a plug rod integrally connected to the chassis, a plurality of hooks are evenly distributed on the circumference of the chassis, a center hole is provided inside the graphite shaft, the plug rod is slidably arranged in the center hole, a plurality of first plug holes are provided on the plug rod along the length direction, a second plug hole matching the plug hole is provided on the upper end of the graphite shaft, the first plug hole and the second plug hole are butt-jointed and fixed by inserting a pin; the hook is detachably connected to the crucible through a steel wire rope.

2. The segregation refining equipment according to claim 1, characterized in that: Hydraulic cylinders are symmetrically arranged on both sides of the frame, and the ends of the piston rods of the hydraulic cylinders are connected with arc-shaped scraper assemblies. The two hydraulic cylinders can drive the scraper assemblies to hold the outer wall of the graphite shaft tightly.

3. The segregation refining equipment according to claim 2, characterized in that: The scraper assembly is a semicircular scraper, and two scraper can be spliced ​​into a cylinder.

4. The segregation refining equipment according to claim 2, characterized in that: The scraper assembly includes a scraper 2, and the scraper 2 includes a connecting block and a scraping block integrally connected to the connecting block, the scraper block is arranged in an arc shape, and the inner wall of the scraper block is provided with a scraping groove; the bottom end of the scraper block is provided with an avoidance notch; the scraper 2 is provided with two pieces, and the two scrapers 2 are centrally symmetrically arranged; the two scrapers 2 are respectively connected to the hydraulic cylinder, the two scraper blocks are staggered, the two avoidance notches are staggered, and the scraper block of one scraper 2 is docked with the avoidance notch of the other scraper 2; the scraper block can be arranged to tightly hold the outer wall of the graphite shaft or the plug rod.

5. The segregation refining equipment according to claim 1, characterized in that: A connecting plate is arranged at the upper end of the graphite shaft, a through hole is opened on the connecting plate and a retaining screw is connected in the through hole, and the retaining screw is arranged close to the end of the latch pin.

6. The segregation refining equipment according to claim 1, characterized in that: The chassis is made of heat-insulating material.

7. The segregation refining equipment according to claim 1, characterized in that: The heating components are arranged in three layers along the height direction, and each layer includes a plurality of heating components uniformly embedded on the inner wall of the thermal insulation lining.

8. The segregation refining equipment according to claim 1, characterized in that: The upper inner wall of the thermal insulation lining is provided with a tapered hole, the outer wall of the crucible is detachably provided with a steel jacket, the upper end of the steel jacket is provided with a tapered portion matching the tapered hole, the bottom end of the steel jacket is supported on the bottom wall of the thermal insulation lining, and the heating assembly is arranged between the steel jacket and the thermal insulation lining; the upper end of the tapered portion is provided with a plurality of lifting ears, and the lifting ears and the hooks are connected by steel wire ropes.

9. The segregation refining equipment according to claim 1, characterized in that: The lifting mechanism is a turbine-worm mechanism, including a driving motor, a turbine assembly and a worm assembly. The turbine assembly and the worm assembly are connected for transmission. The bottom end of the worm assembly is connected to the connecting assembly. The bottom end of the worm assembly is provided with a guide rod, and the guide rod is slidably arranged in a slide groove of the frame.

10. The segregation refining equipment according to claim 1, characterized in that: The lifting mechanism is a hydraulic cylinder mechanism, and the hydraulic cylinder mechanism is connected to a connecting assembly for transmission.

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