Lifting appliance device for replacing aluminum suction pipe of electrolytic bath and aluminum electrolysis system with lifting appliance device

Abstract

The utility model discloses a lifting appliance device for replacing an aluminum suction pipe of an electrolytic bath and an aluminum electrolysis system with the lifting appliance device, and the lifting appliance device comprises a non-magnetic suspension wire, a lifting device, a lifting device and a lifting device, and the upper end of the non-magnetic suspension wire is suitable for being connected with a suspension structure; the non-magnetic joint is detachably connected with the lower end of the non-magnetic suspension wire; and the non-magnetic buckle is detachably connected with the non-magnetic joint and is used for clamping an aluminum suction pipe. The lifting appliance device is not prone to being influenced by a magnetic field, good in movement stability, small in size, capable of not blocking sight lines and high in use safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum electrolysis, and in particular to a lifting device for replacing an aluminum suction pipe of an electrolytic cell and an aluminum electrolysis system with the same. BACKGROUND

[0002] In the production process of electrolytic aluminum, the liquid aluminum electrolyzed in the electrolytic cell is regularly sucked out by a ladle through a suction pipe. In the electrolytic cell, the aluminum liquid is at the bottom of the cell, and the electrolyte is above the aluminum liquid. The suction pipe is inserted into the electrolytic cell, and the bottom of the suction pipe is opened. The ladle sucks the aluminum liquid through the suction pipe in the form of negative pressure. When the suction pipe is inserted into the electrolytic cell, it will contact the electrolyte. The aluminum liquid sucked into the suction pipe will contain electrolyte. After a long time, the electrolyte will solidify and adhere to the inside of the suction pipe, and the suction pipe needs to be replaced and cleaned regularly.

[0003] In the related art, the aluminum electrolysis system needs to be provided with a lifting device for timely replacing the aluminum suction pipe. However, since electrolytic aluminum requires a large amount of current, a strong magnetic field is generated in the electrolytic workshop. Under the action of the magnetic field, the movement stability of the lifting device is poor, or the volume of the lifting device is large, which hinders the line of sight of the operator, and easily causes the aluminum suction pipe to collide with the ladle, causing safety accidents such as personal injury. CONTENT OF THE INVENTION

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a lifting device for replacing an aluminum suction pipe of an electrolytic cell, which is not affected by a magnetic field, has good movement stability, is small in size, does not block the line of sight, and is high in safety.

[0005] To achieve the above object, according to the first aspect of the present application, a lifting device for replacing an aluminum suction pipe of an electrolytic cell is provided, which comprises: a non-magnetic lifting wire, the upper end of the non-magnetic lifting wire being adapted to be connected to a suspension structure; a non-magnetic connector, which is detachably connected to the lower end of the non-magnetic lifting wire; and a non-magnetic buckle, which is detachably connected to the non-magnetic connector and is used for clamping the aluminum suction pipe.

[0006] The lifting device according to the first aspect of the present application is not affected by a magnetic field, has good movement stability, is small in size, does not block the line of sight, and is high in safety.

[0007] In some embodiments of the present application, the non-magnetic lifting wire comprises: an upper ring segment defining an upper connecting ring, a portion of the suspension structure being threaded through the upper connecting ring; a main body segment, an upper end of the main body segment being connected with the upper ring segment; a lower ring segment being connected with a lower end of the main body segment and defining a lower connecting ring, a portion of the non-magnetic connector being threaded through the lower connecting ring; wherein a cross-sectional area of the main body segment is greater than a cross-sectional area of the upper ring segment, and / or a cross-sectional area of the main body segment is greater than a cross-sectional area of the lower ring segment.

[0008] In some embodiments of the present application, the main body segment comprises: two twisted wires, the two twisted wires being twisted into an integrated spiral structure, two ends of the upper ring segment being respectively connected with upper ends of the two twisted wires, and two ends of the lower ring segment being respectively connected with upper ends of the two twisted wires; wherein cross-sectional areas of the twisted wires, the upper ring segment and the lower ring segment are the same.

[0009] In some embodiments of the present application, the lifting device further comprises: a high-temperature-resistant sleeve, being sleeved on an outer circumferential surface of the non-magnetic lifting wire, a long-term use temperature of the high-temperature-resistant sleeve being not less than 100 DEG C.

[0010] In some embodiments of the present application, a diameter of the main body segment is not less than 18 mm, a diameter of the upper ring segment is not less than 5 mm, and a diameter of the lower ring segment is not less than 5 mm.

[0011] In some embodiments of the present application, the non-magnetic connector comprises: an arc-shaped segment; two straight line segments, the two straight line segments being arranged in parallel, two ends of the arc-shaped segment being connected with the two straight line segments in one-to-one correspondence; a locking shaft, being detachably connected with the two straight line segments; wherein the arc-shaped segment is inserted in the lower connecting ring.

[0012] In some embodiments of the present application, the non-magnetic buckle is provided with a connecting hole, the locking shaft is threaded through the connecting hole, and the non-magnetic buckle is located between the two straight line segments.

[0013] In some embodiments of the present application, the non-magnetic buckle comprises: a base plate, being provided with the connecting hole; two clamping arms, each of the clamping arms having a connecting end and a free end, two connecting ends being connected with two ends of the base plate in one-to-one correspondence, the connecting end and the base plate being relatively movable, and two free ends being detachably connected.

[0014] In some embodiments of the present application, the connecting end is provided with a slot, the base plate is inserted in the slot, and a central surface of the clamping arm in a thickness direction and a central surface of the base plate in a thickness direction are arranged in coincidence.

[0015] According to the second aspect of the present application, an aluminum electrolysis system is provided, comprising an aluminum suction pipe and the lifting device for replacing the aluminum suction pipe of the electrolytic cell according to the first aspect of the present application.

[0016] According to the aluminum electrolysis system of the second aspect of the present application, by using the lifting device for replacing the aluminum suction pipe of the electrolytic cell according to the first aspect of the present application, the safety in use can be improved and the probability of personal injury can be reduced.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0019] Figure 1 is one of the structural schematic diagrams of the lifting device according to the embodiments of the present application;

[0020] Figure 2 is another structural schematic diagram of the lifting device according to the embodiments of the present application;

[0021] Figure 3 is a structural schematic diagram of a non-magnetic joint of the lifting device according to the embodiments of the present application;

[0022] Figure 4 is a structural schematic diagram of a non-magnetic buckle of the lifting device according to the embodiments of the present application;

[0023] Figure 5 is a cooperation schematic diagram of a base plate and a clamping arm of the lifting device according to the embodiments of the present application.

[0024] LIST OF REFERENCE NUMERALS:

[0025] Lifting device 1; aluminum suction pipe 2; suspension structure 3;

[0026] Non-magnetic lifting wire 100; upper ring segment 110; upper connecting ring 111; main body segment 120; lower ring segment 130; lower connecting ring 131;

[0027] Non-magnetic joint 200; arc segment 210; straight line segment 220; locking shaft 230; connecting hole 240;

[0028] Non-magnetic buckle 300; base plate 310; clamping arm 320; connecting end 321; free end 322; insertion slot 330;

[0029] High-temperature-resistant sleeve 400. DETAILED DESCRIPTION

[0030] The embodiments of this application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of this application are described in detail below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0032] In the description of this application, "multiple" means two or more.

[0033] The following description, in conjunction with the accompanying drawings, describes a lifting device 1 for replacing the aluminum suction tube in an electrolytic cell according to an embodiment of this application.

[0034] like Figures 1-4 As shown, the lifting device 1 according to an embodiment of this application includes a non-magnetic lifting wire 100, a non-magnetic connector 200, and a non-magnetic buckle 300.

[0035] The upper end of the non-magnetic suspension wire 100 is connected to the suspension structure 3, which can be a crane, tower crane, overhead crane, or similar structure. The part connecting the suspension structure 3 to the non-magnetic suspension wire 100 can also be made of non-magnetic material. The non-magnetic connector 200 is detachably connected to the lower end of the non-magnetic suspension wire 100, and the non-magnetic clip 300 is detachably connected to the non-magnetic connector 200. The non-magnetic clip 300 is used to clamp the aluminum suction tube 2.

[0036] Since all components of the lifting device 1 are made of non-magnetic materials, such as the non-magnetic lifting wire 100, non-magnetic connector 200, and non-magnetic buckle 300, which are made of stainless steel, or the non-magnetic lifting wire 100, non-magnetic connector 200, and non-magnetic buckle 300, which are made of non-magnetic plastic, or the non-magnetic lifting wire 100, non-magnetic connector 200, and non-magnetic buckle 300, which are made of fabric, the movement of the lifting device 1 is not affected by magnetic fields or is only minimally affected by them. Therefore, the movement stability of the aluminum suction tube 2 connected to the lifting device 1 can be guaranteed, and collisions between the aluminum suction tube 2 and the lifting bag due to magnetic field influence can be avoided, resulting in high safety.

[0037] In addition, compared with the prior art in which the hook of the crane directly contacts the aluminum suction pipe, the diameter of the non-magnetic lifting wire 100 is generally not too large, so that the operator has a good view to avoid the collision between the aluminum suction pipe 2 and the ladle due to the blocked view, and the safety is high.

[0038] In addition, since the non-magnetic joint 200, the non-magnetic lifting wire 100, and the non-magnetic buckle 300 are detachably connected, the non-magnetic joint 200, the non-magnetic lifting wire 100, and the non-magnetic buckle 300 can be easily assembled and separated, so that when the aluminum suction pipe 2 does not need to be replaced, the lifting device 1 can be stored separately to reduce the occupied space of the lifting device 1, so that the operator has a better view range, and the other processes of the aluminum electrolysis system can be more smooth.

[0039] In addition, the non-magnetic buckle 300 fixes the aluminum suction pipe 2 by clamping the aluminum suction pipe 2, and the non-magnetic buckle 300 at least applies a force to the aluminum suction pipe 2 from the diametrically opposite sides of the aluminum suction pipe 2, so that the aluminum suction pipe 2 will not fall or have other problems, and is more safe and easy to operate.

[0040] In some specific embodiments of the present application, as shown in Figure 2 The non-magnetic lifting wire 100 includes an upper ring segment 110, a main body segment 120, and a lower ring segment 130. The upper ring segment 110 defines an upper connecting ring 111, and a part of the suspension structure 3 passes through the upper connecting ring 111. The lower ring segment 130 defines a lower connecting ring 131, and a part of the non-magnetic joint 200 passes through the lower connecting ring 131. The upper end of the main body segment 120 is connected with the upper ring segment 110, and the lower end of the main body segment 120 is connected with the lower ring segment 130.

[0041] By providing the upper connecting ring 111 and the lower connecting ring 131, the connection between the non-magnetic lifting wire 100, the suspension structure 3, and the non-magnetic joint 200 is simple, which can reduce the disassembly difficulty, reduce the labor intensity of the employees, increase the safety during operation, and improve the safety factor of replacing the aluminum suction pipe 2.

[0042] In addition, the cross-sectional area of the main body segment 120 is greater than the cross-sectional area of the upper ring segment 110, and the cross-sectional area of the main body segment 120 is greater than the cross-sectional area of the lower ring segment 130. By setting the cross-sectional area of the upper ring segment 110 and the cross-sectional area of the lower ring segment 130 to be smaller, interference between the upper ring segment 110 and the suspension structure 3 can be avoided, and interference between the lower ring segment 130 and the non-magnetic joint 200 can be avoided.

[0043] And, the cross-sectional area of the main section 120 is set to be larger, which can ensure the structural strength of the main section 120, and further ensure the structural strength of the non-magnetic lifting wire 100, so as to prolong the service life of the non-magnetic lifting wire 100, and further improve the safety factor in the process of replacing the aluminum suction pipe 2.

[0044] In some embodiments of the present application, as shown in Figure 1 The main section 120 includes two twisted wires twisted into a one-piece spiral structure, the two ends of the upper ring section 110 are connected to the upper ends of the two twisted wires, and the two ends of the lower ring section 130 are connected to the upper ends of the two twisted wires, wherein the cross-sectional area of the twisted wire, the cross-sectional area of the upper ring section 110 and the cross-sectional area of the lower ring section 130 are the same.

[0045] In this way, the two twisted wires, the upper ring section 110 and the lower ring section 130 are constructed as a one-piece structure, which is more convenient to process, and by twisting the two twisted wires together, the force of the main section 120 can be ensured not to be dispersed, reducing the probability of the aluminum suction pipe 2 shaking, and the main section 120 occupies less space, which can further reduce the probability of the operator's line of sight being blocked.

[0046] In some specific embodiments of the present application, as shown in Figure 1 and Figure 2 The hoist device 1 further includes a high-temperature-resistant sleeve 400, which is sleeved on the outer circumferential surface of the non-magnetic lifting wire 100, and the long-term use temperature of the high-temperature-resistant sleeve 400 is not less than 100℃. Among them, the high-temperature-resistant sleeve 400 can be a heat shrink tube, which is easy to be sleeved on the outer circumferential surface of the non-magnetic lifting wire 100 when not heated, and can be tightly attached to the outer circumferential surface of the non-magnetic lifting wire 100 after being deformed by heating, so as to ensure the relative position reliability between the high-temperature-resistant sleeve 400 and the non-magnetic lifting wire 100.

[0047] By providing the high-temperature-resistant sleeve 400, on the one hand, the influence of high temperature on the non-magnetic lifting wire 100 can be reduced, and the aging rate of the non-magnetic lifting wire 100 due to high temperature can be prevented from being too fast, thereby prolonging the service life of the non-magnetic lifting wire 100, and on the other hand, the relative position of the two twisted wires can be fixed to prevent the two twisted wires from separating, thereby ensuring the structural integrity of the main section 120.

[0048] In some specific embodiments of the present application, the diameter of the main section 120 is not less than 18mm, so that the strength of the main section 120 is high enough to bear objects with large weight, and even if the aluminum suction pipe 2 is replaced frequently, the main section 120 is not easy to break.

[0049] The diameter of the upper ring segment 110 is not less than 5 mm and not greater than 15 mm, so that the strength of the upper ring segment 110 is not too small to reduce the risk of fracture of the upper ring segment 110, and the diameter of the upper ring segment 110 is not too large to facilitate the connection of the upper ring segment 110 and the suspension structure 3.

[0050] The diameter of the lower ring segment 130 is not less than 5 mm, so that the strength of the lower ring segment 130 is not too small to reduce the risk of fracture of the lower ring segment 130, and the diameter of the lower ring segment 130 is not too large to facilitate the connection of the lower ring segment 130 and the non-magnetic joint 200.

[0051] In some embodiments of the present application, as shown in Figures 1-3 The non-magnetic joint 200 includes an arc segment 210, two straight segments 220, and a locking shaft 230. The arc segment 210 is inserted into the lower connecting ring 131, the two straight segments 220 are arranged in parallel, the two ends of the arc segment 210 are connected to the two straight segments 220 one by one, and the locking shaft 230 is detachably connected to the two straight segments 220.

[0052] Since the arc segment 210 is configured in an arc shape and the central angle corresponding to the arc segment 210 can be 90°, the transition between the arc segment 210 and the straight segment 220 is smoother, which can avoid excessive wear of the lower ring segment 130 at the connection between the arc segment 210 and the straight segment 220, greatly avoids burrs on the lower ring segment 130, improves the smoothness of the lower ring segment 130, reduces the probability of injury to the operator, and prolongs the service life of the lower ring segment 130.

[0053] By arranging the two straight segments 220, the arc segment 210 and the locking shaft 230 are connected end to end to form a ring, the two straight segments 220 are arranged opposite to each other, the arc shape of the arc segment 210 defines the spacing between the two straight segments 220, the arc segment 210 and the locking shaft 230 are arranged opposite to each other, and the length of the straight segment 220 defines the spacing between the arc segment 210 and the locking shaft 230, so that the inner space of the ring of the non-magnetic joint 200 is large, and the material and cost are reduced.

[0054] In addition, since the locking shaft 230 is detachably connected to the two straight segments 220, when the locking shaft 230 and the straight segment 220 are separated, the arc segment 210 is easily inserted into the lower connecting ring 131, and the non-magnetic joint 200 is easily separated from the lower connecting ring 131, the disassembly of the non-magnetic joint 200 and the non-magnetic suspension wire 100 is more convenient, the production efficiency is improved, the later maintenance is simple, the work intensity of the employees is reduced, and the safety during operation is increased.

[0055] In some embodiments of the present application, as shown in Figure 1 and Figure 4As shown, the non-magnetic buckle 300 is provided with a connecting hole 240, and the locking shaft 230 is arranged in the connecting hole 240. That is, when the locking shaft 230 is separated from the straight section 220, the locking shaft 230 is arranged in the connecting hole 240, and the locking shaft 230 is separated from the connecting hole 240. The disassembly of the non-magnetic joint 200 and the non-magnetic buckle 300 is more convenient, the production efficiency is improved, the later maintenance is relatively simple, the working strength of the employees is reduced, and the safety in the operation process is increased.

[0056] In addition, the non-magnetic buckle 300 is located between the two straight sections 220, and the two straight sections 220 can limit the position of the non-magnetic buckle 300 in the axial direction of the locking shaft 230, limit the stroke of the relative movement of the non-magnetic buckle 300 and the locking shaft 230, thereby ensuring the stability of the movement of the aluminum suction pipe 2, and reducing the probability of collision between the aluminum suction pipe 2 and the lifting bag.

[0057] In some embodiments of the present application, as shown in Figure 4 and Figure 5 The non-magnetic buckle 300 includes a base plate 310 and two clamping arms 320. The base plate 310 is provided with a connecting hole 240, wherein the connecting hole 240 can be located at the center of the extension direction of the base plate 310. Each clamping arm 320 has a connecting end 321 and a free end 322, and the two connecting ends 321 are connected to the two ends of the base plate 310 one by one, and the connecting end and the base plate 310 can be relatively moved, and the two free ends 322 are connected in a detachable manner.

[0058] For example, the connecting end 321 and the base plate 310 can be connected by a pin shaft, and the clamping arm 320 rotates around the pin shaft; or the connecting end 321 and the base plate 310 can slide relative to each other, and the base plate 310 is arc-shaped, and when the two connecting ends 321 slide along the base plate 310, the two free ends 322 are close to or away from each other.

[0059] And, the two free ends 322 can be clamped, for example, one free end 322 is provided with a buckle, and the other free end 322 is provided with a plurality of clamping grooves, according to the diameter of the aluminum suction pipe 2, the buckle is matched with different clamping grooves, to ensure that the non-magnetic buckle 300 and the aluminum suction pipe 2 are reliably connected, of course, the buckle can also be a plurality of; Or the two free ends 322 can be connected by a pin shaft, one free end 322 is provided with a first positioning hole, and the other free end 322 is provided with a plurality of second positioning holes, the pin shaft passes through the first positioning hole, according to the diameter of the aluminum suction pipe 2, the pin shaft passes through different second positioning holes, to ensure that the non-magnetic buckle 300 and the aluminum suction pipe 2 are reliably connected; Or the two free ends 322 can be connected by a connecting belt, one free end 322 is provided with a first positioning hole, and the other free end 322 is provided with a second positioning hole, according to the diameter of the aluminum suction pipe 2, the tightness of the connecting belt is adjusted, to ensure that the non-magnetic buckle 300 and the aluminum suction pipe 2 are reliably connected.

[0060] In this way, the fixing and separation between the non-magnetic buckle 300 and the aluminum suction pipe 2 are more convenient, and can adapt to aluminum suction pipes 2 of different diameters, improve the application range of the lifting device 1, at the same time, reduce the labor intensity of employees, increase the safety in the operation process, and further improve the safety factor of replacing the aluminum suction pipe 2.

[0061] In some embodiments of the present application, as shown in Figure 5 The connecting end 321 is provided with a slot 330, and the substrate 310 is inserted in the slot 330. The center surface of the thickness direction of the clamping arm 320 and the center surface of the thickness direction of the substrate 310 are arranged in coincidence.

[0062] In this way, the relative force between the substrate 310 and the clamping arm 320 is also located on the center surface of the thickness direction of the clamping arm 320, and the relative force between the substrate 310 and the clamping arm 320 will not be displaced from each other, which can improve the connection reliability between the substrate 310 and the clamping arm 320.

[0063] The aluminum electrolysis system according to the embodiments of the present application is described below in conjunction with the drawings. The aluminum electrolysis system includes an aluminum suction pipe 2 and a lifting device 1 for replacing the aluminum suction pipe of the electrolytic cell according to the above-mentioned embodiments of the present application.

[0064] The aluminum electrolysis system according to the embodiments of the present application can improve the use safety and reduce the probability of personnel injury by using the lifting device 1 for replacing the aluminum suction pipe of the electrolytic cell according to the above-mentioned embodiments of the present application.

[0065] The other configurations and operations of the lifting device 1 for replacing the aluminum suction pipe of the electrolytic cell according to the embodiments of the present application and the aluminum electrolysis system having the same are known to those skilled in the art, and will not be described in detail here.

[0066] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "exemplary embodiment", "specific example", or "some examples" etc. It is emphasized that these terms are not intended to mean that a particular feature, structure, material or characteristic is required to be included in at least one embodiment of the application. Rather, such terms are intended to convey that from among the total scope of embodiments of the application, the particular feature, structure, material or characteristic is included in at least one embodiment of the application. Exemplary recitations of such terms throughout the specification are not necessarily all referring to the same embodiment or example.

[0067] Although embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A hanger device for replacing an aluminum suction tube of an electrolytic cell, characterized in that, The utility model relates to a kind of hoist device for electrolytic cell replacement suction aluminum pipe, including: Non-magnetic hanging line, the upper end of the non-magnetic hanging line is suitable for being connected with suspension structure; Non-magnetic joint, detachably connected with the lower end of the non-magnetic hanging line; Non-magnetic buckle, detachably connected with the non-magnetic joint, for clamping suction aluminum pipe.

2. The spreader device of claim 1, wherein, The non-magnetic hanging line includes: Upper ring section, define upper connection ring, part of the suspension structure is threaded in the upper connection ring; Main body section, the upper end of the main body section is connected with the upper ring section; Lower ring section, with the lower end of the main body section and define lower connection ring, part of the non-magnetic joint is threaded in the lower connection ring; Wherein, the cross-sectional area of the main body section is greater than the cross-sectional area of the upper ring section, and / or the cross-sectional area of the main body section is greater than the cross-sectional area of the upper ring section.

3. The spreader device of claim 2, wherein, The main body section includes: Two twisted wires, two the twisted wires are twisted into integrated spiral structure, two ends of the upper ring section are connected with the upper end of two the twisted wires respectively, two ends of the lower ring section are connected with the lower end of two the twisted wires respectively; Wherein, the cross-sectional area of the twisted wire, the cross-sectional area of the upper ring section and the cross-sectional area of the lower ring section are same.

4. The spreader device of claim 3, wherein Further including: High-temperature-resistant sleeve, sleeved on the outer peripheral surface of the non-magnetic hanging line, the long-term use temperature of the high-temperature-resistant sleeve is not less than 100 DEG C.

5. The spreader device of claim 2, wherein, The diameter of the main body section is not less than 18mm; The diameter of the upper ring section is not less than 5mm; The diameter of the lower ring section is not less than 5mm.

6. The spreader device of claim 2, wherein, The non-magnetic joint includes: Arc section; Two straight sections, two the straight sections are arranged in parallel, two ends of the arc section are connected with two the straight sections one by one; Locking shaft, detachably connected with two the straight sections; Wherein, the arc section is inserted in the lower connection ring.

7. The spreader device of claim 6, wherein, The non-magnetic buckle is provided with connecting hole, the locking shaft is threaded in the connecting hole, and the non-magnetic buckle is located between two the straight sections.

8. The spreader device of claim 7, wherein, The non-magnetic buckle includes: Base plate, provided with the connecting hole; Two clamping arms, each clamping arm has connecting end and free end, two the connecting end is connected with two ends of the base plate one by one, and the connecting end can be relatively moved with the base plate, and two the free end is detachably connected.

9. The spreader device of claim 8, wherein, The connecting end is provided with slot, the base plate is inserted in the slot, and the center surface of the clamping arm in thickness direction and the center surface of the base plate in thickness direction are coincidently arranged.

10. An aluminum electrolysis system characterized by, Including suction aluminum pipe and the hoist device for electrolytic cell replacement suction aluminum pipe according to any one of claims 1-9.

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