A tipping bucket type electrolyte refilling device for aluminum electrolysis cells

Abstract

This utility model relates to a tipping bucket type electrolyte refilling device for aluminum electrolysis tanks, belonging to the field of electrolyte transfer technology. It includes a support frame, a vehicle frame mounted on the support frame, a tipping bucket and a vibrating hammer mounted on the vehicle frame, and a driving device for driving the tipping bucket to tip. The vibrating hammer is used to hammer the outer wall of the tipping bucket, improving the cleaning effect of condensed electrolyte adhering to the wall, reducing the workload and risk factor of workers. Moreover, because both the tipping bucket and the vibrating hammer are mounted on the vehicle frame, the hammering angle between the vibrating hammer and the tipping bucket will not change when the vehicle frame moves, thereby improving the vibration efficiency and vibration quality.

Description

Technical Field

[0001] This utility model belongs to the field of electrolyte transfer technology, and specifically relates to a tipping bucket type electrolyte refilling device for aluminum electrolytic cells. Background Technology

[0002] In aluminum electrolysis, electrolyte levels undergo highly dynamic changes due to factors such as operational factors, variations in thermal balance, and control of process parameters including the molecular ratio (CR). Low electrolyte levels result in small quantities, poor thermal stability, and extreme sensitivity to heat changes. This reduces alumina dissolution, leading to significant precipitation and increased anodic effect. Excessively low electrolyte levels can cause overheating of the electrolyte surface or tank defects, increasing raw material consumption and reducing current efficiency. Conversely, excessively high electrolyte levels can cause the anode to be buried too deep in the electrolyte, hindering anode gas escape and reducing current efficiency. This can also lead to uneven anode bottom consumption or long bridging. Excessive current flowing through the sides can cause the furnace top to become caked and difficult to maintain, potentially resulting in side leakage or furnace leakage. Both excessively low and high electrolyte levels directly affect the thermal stability and current efficiency of aluminum electrolysis; therefore, maintaining an appropriate electrolyte level is crucial.

[0003] To maintain electrolyte levels within the ideal range (typically 18-20 cm), manual adjustments are often necessary. There are two main methods: one is to scoop a certain amount of electrolyte from the electrolyzer with a high electrolyte level and manually push a small inverted container to transfer the scooped electrolyte to the electrolyzer with a low electrolyte level, thus redistributing the electrolyte; the other method is to scoop a certain amount of electrolyte from the high electrolyte level into an electrolyte cooling tank, then use a small forklift to push the cooling tank to a designated cooling point. After the electrolyte has cooled, it is stored in large bags and re-dissolved when needed.

[0004] Traditional reverse-filling devices use a manually pushed two-wheeled cart with a small reverse-filling bucket at the front and a counterweight at the rear. Personnel maintain balance during transport, resulting in cumbersome and time-consuming operations. During transport, the electrolyte easily condenses and adheres to the container, reducing the bucket's capacity and making cleaning complex and requiring multiple operations, leading to low efficiency. Due to the limitations of the transport device itself, the amount of electrolyte that can be carried at one time is limited, and manual operation makes it difficult to precisely control the amount scooped and poured, ensuring that the amount of electrolyte transported and poured each time does not meet production requirements. This not only affects the timely replenishment and thermal balance of electrolyte in the aluminum electrolysis cell but also necessitates frequent transport and reverse-filling operations to meet production electrolyte levels, further reducing overall production efficiency. During normal production, the electrolyte temperature is 940–960℃, and the initial crystallization temperature is 920–930℃. During reverse-filling, the electrolyte rapidly condenses due to the large temperature difference, causing it to clump and adhere to the inner wall of the container. This requires manual breaking up of the condensed electrolyte on the inner wall using a hammer, which is labor-intensive and dangerous.

[0005] Therefore, in order to address the above-mentioned technical problems, designing an electrolyte backfilling device for a tipping bucket aluminum electrolysis cell to improve the cleaning effect of condensed electrolyte adhering to the wall and reduce the workload and risk factor of workers is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] To address the aforementioned problems, this invention provides a tipping bucket type electrolyte backfilling device for aluminum electrolysis cells, which improves the cleaning effect of condensed electrolyte adhering to the walls and reduces the workload and risk factor for workers.

[0007] To achieve the above objectives, this utility model provides the following solution:

[0008] A tipping bucket type electrolyte refilling device for aluminum electrolysis cells includes a support frame, a frame mounted on the support frame, a tipping bucket and a vibrating hammer mounted on the frame, and a driving device for driving the tipping bucket to tip over. The vibrating hammer is used to hammer the outer wall of the tipping bucket.

[0009] Preferably, the frame includes a plate and a pair of connecting arms disposed at the ends of the plate, and the tipper box is disposed in the middle region of the connecting arms and hinged to the connecting arms.

[0010] Preferably, the driving device includes a hydraulic rod mounted on the plate, a first bracket, a pulley mounted on the first bracket, and a traction rope. One end of the traction rope is connected to the telescopic end of the hydraulic rod, and the other end is connected to the bottom of the tipping box. The traction rope passes through the pulley.

[0011] Preferably, the vehicle frame is hinged to the support frame, the tipping box is disposed at one end of the vehicle frame, and a gravity sensor is disposed at the other end of the vehicle frame. The hinge point between the vehicle frame and the support frame is located between the tipping box and the gravity sensor. One end of the gravity sensor is connected to the vehicle frame, and the other end of the gravity sensor is connected to the support frame.

[0012] Preferably, the end of the vehicle frame away from the tipper box is also provided with a balancing hydraulic rod, the telescopic end of the balancing hydraulic rod is connected to the vehicle frame, and the side of the balancing hydraulic rod away from the telescopic end is connected to a second bracket provided on the support frame.

[0013] Preferably, the bottom of the support frame is provided with traveling wheels and swivel wheels.

[0014] Preferably, a receiving box is provided at one end of the support frame away from the tipping box, and the receiving box contains a heat-insulating power supply, a counterweight box and a control system.

[0015] Preferably, a handle is provided at one end of the support frame away from the tipping box, and a display control screen is provided on one side of the handle.

[0016] Preferably, the top of the tipping box is provided with a cover plate.

[0017] Preferably, the tipping box discharge port is provided with a conical structure.

[0018] The present invention achieves the following technical advantages over the prior art:

[0019] By installing a tipping box and a vibrating hammer on the chassis, when the electrolyte in the tipping box forms solid clumps due to adhesion to the walls, after the backfilling task is completed, the vibrating hammer can be used to strike the side walls of the tipping box to break up these condensed electrolyte clumps. Subsequently, the broken electrolyte clumps are collected for later reuse, improving the cleaning effect of condensed electrolyte adhering to the walls, reducing the workload and risk factor for workers, and because both the tipping box and the vibrating hammer are mounted on the chassis, the striking angle between the vibrating hammer and the tipping box does not change when the chassis moves, thereby improving the vibrating efficiency and quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Appendix Figure 1 This is a schematic diagram of the overall structure of the tipping bucket type aluminum electrolytic cell electrolyte refilling device disclosed in the embodiments of this utility model;

[0022] Appendix Figure 2 This is a schematic diagram of the three-view structure of the tipping bucket type aluminum electrolytic cell electrolyte refilling device disclosed in the embodiments of this utility model;

[0023] Among them, 1. tipping box; 2. vibratory hammer; 3. hydraulic tie rod; 4. gravity sensor; 5. balance hydraulic tie rod; 6. container box; 7. display and control screen; 8. casters; 9. handle; 10. traveling wheels; 11. support frame; 12. chassis; 13. first bracket; 14. second bracket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The purpose of this invention is to provide a tipping bucket type electrolyte backfilling device for aluminum electrolysis cells, which improves the cleaning effect of condensed electrolyte adhering to the wall and reduces the workload and risk factor for workers.

[0026] refer to Figures 1-2 The tipping-type aluminum electrolytic cell electrolyte backfilling device disclosed in this embodiment of the present invention includes at least a support frame 11, a vehicle frame 12 mounted on the support frame 11, a tipping box 1 and a vibrating hammer 2 mounted on the vehicle frame 12, and a drive device for driving the tipping box 1 to tip over. The vibrating hammer 2 is used to hammer the outer wall of the tipping box 1. By mounting the tipping box 1 and the vibrating hammer 2 on the vehicle frame 12, when the electrolyte in the tipping box 1 forms solid clumps due to adhesion to the wall, the backfilling task is completed. After completion, the side wall of the tipping bucket can be struck by the vibrating hammer 2 to break the condensed electrolyte blocks. The broken electrolyte blocks are then collected for subsequent reuse, improving the cleaning effect of condensed electrolytes on the wall, reducing the workload and risk factor of the workers. Moreover, since both the tipping bucket 1 and the vibrating hammer 2 are mounted on the frame 12, the striking angle between the vibrating hammer 2 and the tipping bucket 1 will not change when the frame 12 moves, thereby improving the vibration efficiency and vibration quality.

[0027] It should be noted that the tipping box 1 is made of high-temperature resistant ceramic-coated steel and has a capacity of 50L.

[0028] refer to Figure 1 and Figure 2 In one embodiment, the frame 12 includes a plate with a pair of connecting arms at the end of the plate. The tipping box 1 is located in the middle area of ​​the two connecting arms and is hinged to the connecting arms. By hinged to the connecting arms, the tipping box 1 can rotate around the hinge point, thereby realizing the tipping box 1 flipping.

[0029] refer to Figure 1 and Figure 2In one embodiment, the driving device includes a hydraulic rod 3 mounted on the plate, a first bracket 13, a pulley mounted on the first bracket 13, and a traction rope. One end of the traction rope is connected to the telescopic end of the hydraulic rod 3, and the other end of the traction rope is connected to the bottom of the tipping box 1. The traction rope passes around the top of the pulley and connects to the bottom of the tipping box 1. The hydraulic rod 3 serves as a power source and pulls the traction rope through telescopic movement. The fixed pulley on the first bracket 13 changes the direction of the traction rope, converting the vertical movement of the hydraulic rod 3 into the tipping torque of the tipping box 1, thereby realizing the automatic tipping of the tipping box 1.

[0030] It should be noted that the pulley diameter is 20 times larger than the traction rope diameter to reduce bending fatigue.

[0031] refer to Figure 1 and Figure 2 In one embodiment, the frame 12 is hinged to the support frame 11, the tipping box 1 is located at one end of the frame 12, and a gravity sensor 4 is located at the other end of the frame 12. The hinge point between the frame 12 and the support frame 11 is located between the tipping box 1 and the gravity sensor 4. One end of the gravity sensor 4 is connected to the frame 12, and the other end of the gravity sensor 4 is connected to the support frame 11. By setting the gravity sensor 4 at the other end of the frame 12, the weight of the electrolyte in the tipping box 1 can be accurately measured, thereby achieving precise control of electrolyte distribution.

[0032] It should be noted that gravity sensor 4 can be a tension sensor or a pressure sensor.

[0033] refer to Figure 1 and Figure 2 A balancing hydraulic rod 5 is also provided at the end of the frame 12 away from the tipper box 1. The telescopic end of the balancing hydraulic rod 5 is connected to the frame 12. A second bracket 14 is provided at the end of the support frame 11 away from the frame 12, which is perpendicular to the support frame 11 in the height direction. The side of the balancing hydraulic rod 5 away from the telescopic end is connected to the second bracket 14. When the tilting angle of the tipper box 1 controlled by the hydraulic rod 3 is too large or too small, the tilting angle of the frame 12 can be finely adjusted by the balancing hydraulic rod 5 to ensure the accuracy of the tilting angle of the tipper box 1.

[0034] refer to Figure 1 and Figure 2 In one embodiment, the bottom of the support frame 11 is provided with a traveling wheel 10 and a universal wheel 8. The traveling wheel 10 enables the entire backflow device to move, and the universal wheel 8 enables the backflow device to turn.

[0035] It should be noted that the walking wheels 10 are driven to rotate by a drive motor, or the drive device can be omitted and the inverted irrigation device can be moved by manual pushing.

[0036] refer to Figure 1 and Figure 2 In one embodiment, a receiving box 6 is provided at the end of the support frame 11 away from the tipping box 1. The receiving box 6 is equipped with a heat insulation power supply, a counterweight box and a control system. The heat insulation power supply can provide power to the entire system. The counterweight box can prevent the electrolyte in the tipping box 1 from being too heavy and tipping over. The control system can receive the signal collected by the gravity sensor 4 in real time and control the hydraulic rod 3 and the balancing hydraulic rod 5 to ensure the precise tilting angle of the tipping box 1, thereby improving the accuracy of electrolyte backfilling.

[0037] It should be noted that the control system is a PLC control system, and a heat insulation cover is installed on the outside of the storage box to prevent the high temperature of the tipping box 1 from damaging the heat insulation power supply, counterweight box and control system inside the storage box.

[0038] refer to Figure 1 and Figure 2 In one embodiment, a handle 9 is provided on the end of the support frame 11 away from the tipping box 1, and a display control screen 7 is provided on one side of the handle 9. The backfilling device can be pushed through the handle 9, and the weight of the backfilled electrolyte can be displayed through the display control screen 7.

[0039] It should be noted that the grip 9 is an electric-assisted grip 9. The rotating handle on the electric-assisted grip 9 is electrically connected to the drive motor that controls the walking wheel 10, which can realize the rotation of the walking wheel 10 and precisely control the speed of the walking wheel 10.

[0040] The display control panel 7 is equipped with control buttons for start, reset, pause, adjustment, and vibration. The PLC can be controlled through the display control panel 7 to control the hydraulic tilting angle and tilting speed.

[0041] refer to Figure 1 and Figure 2 As one implementation method, the top of the tipping box 1 is provided with a cover plate to prevent the electrolyte from splashing.

[0042] It should be noted that the side wall of the tipping box 1 has a double-shell structure. The interlayer of the double-shell structure is equipped with insulation cotton or a heating device to ensure the temperature of the electrolyte inside the tipping box 1 and prevent the electrolyte from solidifying into lumps.

[0043] refer to Figure 1 and Figure 2 As one implementation method, the discharge port of the tipping box 1 is set in a conical structure, which can guide the electrolyte when discharging it and avoid splashing the electrolyte.

[0044] The working process of this utility model is as follows:

[0045] Workers scoop electrolyte from one electrolytic cell into the tipping box 1 and push it (electrically assisted) to the aluminum outlet of another electrolytic cell. Upon pressing the start button, the hydraulic lever 3 drives the tipping box 1 to slowly tilt at a 45° angle. During the pouring process, as the electrolyte is poured out, the tilt angle of the tipping box 1 will inevitably change slightly. At this time, the tilt angle of the tipping box 1 is finely adjusted by the balancing hydraulic lever 5. The discharge port guides the electrolyte to flow quickly and smoothly into the electrolytic cell. When the gravity signal collected by the gravity sensor 4 detects that the electrolyte has reached the set threshold weight, the control system controls the hydraulic lever 3 to retract, ending the tilting of the tipping box 1. Alternatively, the tilting can be ended manually by pressing the reset button (or by pressing the pause button in special circumstances).

[0046] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0047] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dumper-type aluminum electrolysis cell electrolyte backflow device, characterized by, It includes a support frame, a chassis mounted on the support frame, a tipping box and a vibratory hammer mounted on the chassis, and a drive device for driving the tipping box to tip over, wherein the vibratory hammer is used to hammer the outer wall of the tipping box.

2. A back-pouring apparatus for a tundish for an aluminium electrolytic cell according to claim 1, characterised in that, The frame includes a plate and a pair of connecting arms disposed at the ends of the plate, and the tipper box is disposed in the middle region of the connecting arms and hinged to the connecting arms.

3. A pot electrolyte backwash apparatus for a tundish aluminium reduction cell as claimed in claim 2, characterised in that, The driving device includes a hydraulic rod mounted on the plate, a first bracket, a pulley mounted on the first bracket, and a traction rope. One end of the traction rope is connected to the telescopic end of the hydraulic rod, and the other end is connected to the bottom of the tipping box. The traction rope passes through the pulley.

4. The pot electrolyte backwash apparatus of claim 1, wherein, The vehicle frame is hinged to the support frame, the tipping box is located at one end of the vehicle frame, and a gravity sensor is located at the other end of the vehicle frame. The hinge point between the vehicle frame and the support frame is located between the tipping box and the gravity sensor. One end of the gravity sensor is connected to the vehicle frame, and the other end of the gravity sensor is connected to the support frame.

5. A pot electrolyte backwash apparatus for a tundish aluminium reduction cell as claimed in claim 4, characterised in that, The end of the vehicle frame away from the tipper box is also provided with a balancing hydraulic rod. The telescopic end of the balancing hydraulic rod is connected to the vehicle frame, and the side of the balancing hydraulic rod away from the telescopic end is connected to a second bracket provided on the support frame.

6. The pot electrolyte backwash apparatus of claim 1, wherein, The bottom of the support frame is equipped with wheels and casters.

7. The pot electrolyte backwash apparatus of claim 1, wherein, A receiving box is provided at one end of the support frame away from the tipping box. The receiving box contains a heat-insulating power supply, a counterweight box, and a control system.

8. The tipping bucket type aluminum electrolytic cell electrolyte recharge device according to claim 1, characterized in that, A handle is provided at one end of the support frame away from the tipping box, and a display control screen is provided on one side of the handle.

9. The pot electrolyte backwash apparatus of claim 1, wherein, The tipping box is equipped with a cover plate on top.

10. The pot electrolyte backwash apparatus of claim 1, wherein, The tipping box has a tapered discharge port.

Images