CN116875816A - High-purity aluminum production system - Google Patents

Abstract

The invention discloses a high-purity aluminum production system, which includes a refined aluminum tank and control equipment. The control equipment includes a control unit and a three-layer liquid depth measuring device. The control equipment is also used to control the three-layer liquid depth measuring device to measure during the refining process. The respective depths of the three layers of liquid in the refined aluminum tank. The three-layer liquid depth measuring device is arranged above the refined aluminum tank and includes a probe mechanism and a camera mechanism; the control unit is electrically connected to the probe mechanism and is used to control the probe The insertion mechanism penetrates into the refined aluminum tank and contacts the bottom of the refined aluminum tank, and then completely moves out of the refined aluminum tank, so that the penetration mechanism adheres to the adherends in the three-layer liquid; after the penetration mechanism moves out After the refined aluminum tank is filled, the control unit controls the camera mechanism to capture images of the penetrating mechanism, thereby obtaining the respective depths of the three layers of liquid in the refined aluminum tank through the images. The high-purity aluminum production system of the present invention can measure the three-layer liquid depth online, improve production efficiency, reduce energy consumption and ensure product quality.

Description

A high-purity aluminum production system

Technical field

The invention belongs to the technical field of refining aluminum, and specifically relates to a high-purity aluminum production system.

Background technique

At present, the three-layer liquid refined aluminum electrolysis method is the main method for preparing high-purity aluminum (or refined aluminum). During electrolysis, there are three layers of liquid in the refined aluminum tank. The bottom layer is the anode and anode conductor. The anode conductor is made of raw aluminum to be refined. It is composed of the weighting agent Cu, the middle layer is the electrolyte, the density is between the anode alloy and the aluminum, and the upper layer is the high-purity aluminum obtained by refining and the cathode. The tank body of the refined aluminum tank is provided with a raw material inlet for adding raw materials to the bottom layer, an electrolyte inlet connected to the middle layer, and a pure aluminum outlet connected to the upper layer.

When using electrolysis to produce high-purity aluminum, it is necessary to strictly control the timing of adding raw aluminum and the timing of producing refined aluminum. That is, when there is less raw material, aluminum ingot raw materials need to be supplemented, and when there is too much refined aluminum in the finished product, aluminum needs to be extracted. In addition, when electrolytes are low, electrolytes need to be replenished. At present, the three-layer liquid electrolysis process generally uses a complete power outage after running for a period of time to measure the depth of each layer to determine whether it is necessary to add raw aluminum and electrolyte, or whether aluminum needs to be extracted. Power outage not only affects production efficiency, but also requires additional steps to restart. temperature, resulting in increased energy consumption.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-purity aluminum production system that can measure the depth of three layers of liquid online in view of the above-mentioned deficiencies in the existing technology.

Improve production efficiency, reduce energy consumption and ensure product quality.

The invention provides a high-purity aluminum production system, which includes a refined aluminum tank and control equipment. Three layers of liquid are contained in the refined aluminum tank. The control equipment is used to control the refined aluminum tank to perform the refining process. The control equipment includes a control unit and The three-layer liquid depth measuring device is also used to control the three-layer liquid depth measuring device to measure the respective depths of the three-layer liquids in the refined aluminum tank during the refining process. The three-layer liquid depth measuring device is arranged above the refined aluminum tank. , including a penetration mechanism and a camera mechanism; the control unit is electrically connected to the penetration mechanism, and is used to control the penetration mechanism to penetrate into the refined aluminum tank and contact the bottom of the refined aluminum tank, and then make it completely Remove the refined aluminum trough, so that the detection mechanism adheres to the adherends in the three-layer liquid; the control unit is also electrically connected to the camera mechanism, and is used to control the camera mechanism to take pictures after the detection mechanism moves out of the refined aluminum trough. The image of the penetration mechanism is used to obtain the respective depths of the three layers of liquid in the refined aluminum tank.

Preferably, the penetration mechanism is provided with a first position sensor for sensing the position of the penetration mechanism, the control unit includes a timing module, and the first position sensor detects that the penetration mechanism is in contact with the refined aluminum When the bottom of the groove is in contact with the position, a depth sounding signal is sent to the control unit. After receiving the depth sounding signal, the control unit causes the timing module to start timing. After the timing module reaches the first set time, the control unit controls the penetration mechanism to completely move out of the precision meter. Aluminum trough, when the first position sensor senses that the penetration mechanism is in a position that has completely moved out of the refined aluminum trough, it sends a shooting signal to the control unit. After receiving the shooting signal, the control unit controls the camera mechanism to capture an image of the penetration mechanism.

Preferably, the penetration mechanism includes a penetration driving part and an insulating rod. The penetration driving part is electrically connected to the control unit, and is used to drive the insulating rod to descend into the refined aluminum groove and move up and out under the control of the control unit. Refined aluminum tank.

Preferably, the three-layer liquid depth measuring device further includes an intensifying screen. The intensifying screen is arranged above the refined aluminum tank. The control unit controls the penetration driving member to drive the insulating rod to rise and move out of the refined aluminum tank, and causes the insulating rod to rise and move out of the refined aluminum tank. The lower part of the insulating rod with adherents adhered corresponds to the position of the intensifying screen. At this time, the camera mechanism and the intensifying screen are respectively located on both sides of the insulating rod. The intensifying screen is used to detect the lower part of the insulating rod in the camera mechanism. Improves the contrast of the image you take when shooting.

Preferably, the control device further includes a temperature measurement device and a temperature adjustment device, and the control device is also used to control the temperature measurement device to sense the current temperatures of each of the three layers of liquid in the refined aluminum tank during the refining process; and, for The temperature-regulating device is controlled to adjust the temperature of the three-layer liquid in the refined aluminum tank during the refining process; the control unit is also electrically connected to the temperature measuring device and the temperature-regulating device, and is used to adjust the temperature of the three-layer liquid according to the respective set temperatures of the three-layer liquid. The respective current temperatures of the three-layer liquids are obtained by obtaining the respective temperature differences of the three-layer liquids, and according to the respective temperature differences of the three-layer liquids and the respective depths of the three-layer liquids, the required temperature adjustment amounts of the three-layer liquids are obtained, and then according to the respective required temperature adjustments of the three-layer liquids. The temperature adjustment amount controls the output of the temperature adjustment device.

Preferably, the temperature measuring device is movably connected above the refined aluminum tank in the vertical direction, and the control unit is used to drive the detection end of the temperature measuring device to descend into the refined aluminum tank, thereby obtaining the three layers of liquid in the refined aluminum tank. respective current temperature.

Preferably, the control equipment also includes a cathode height control device, which includes a cathode lifting driver and a cathode rod. The bottom end of the cathode rod is immersed in the upper liquid in the refined aluminum tank. The control unit includes a module, the acquisition module is used to acquire the real-time depth of the cathode rod immersed in the upper liquid in the refined aluminum tank at every second set time/when the aluminum addition step is completed/the aluminum extraction step is completed. The control unit is also connected with the cathode lifting driver. Electrical connection is used to determine whether the real-time depth of the cathode rod immersed in the upper liquid is within the set range. If it is not within the set range, the cathode lifting driver is controlled to drive the cathode rod up and down to adjust its current height until the cathode rod is immersed. The real-time depth of the upper layer liquid is within the set range.

Preferably, the control unit also includes a timing module, and the control unit is also used to receive a detection trigger signal triggered by the refined aluminum tank after performing an aluminum adding operation/aluminum withdrawing operation, and is used to detect when the detection trigger signal is received. /The timing module sends a control instruction to the acquisition module every time the second set time is calculated, driving it to acquire the real-time depth of the cathode rod immersed in the upper liquid in the refined aluminum tank.

Preferably, the control equipment also includes an extreme hydraulic drop measuring device, which is used to obtain the extreme hydraulic drop between the upper liquid and the lower liquid in the refined aluminum tank during the refining process. The extreme hydraulic drop measuring device includes a cathode probe, an anode probe and an anode probe. The driving part, the cathode probe is electrically connected to the cathode rod to be electrically connected to the upper liquid in the refined aluminum tank through the cathode rod, the anode probe driving part is connected to the anode probe and is used to drive the anode probe up and down to make the anode probe contact The control unit is also electrically connected to the cathode probe and the anode probe respectively for the lower liquid in the refined aluminum tank, and is used to obtain the difference between the upper liquid and the lower liquid in the refined aluminum tank when the anode probe comes into contact with the lower liquid in the refined aluminum tank. Extreme pressure drop between.

Preferably, the anode probe is provided with a second position sensor for sensing the position of the anode probe. The second position sensor sends a pressure measurement signal when it senses that the anode probe is in contact with the lower liquid in the refined aluminum tank. to the control unit. After receiving the pressure measurement signal, the control unit measures the extreme pressure drop between the upper liquid and the lower liquid in the refined aluminum tank. After the measurement is completed, the control unit controls the anode probe driver to drive the anode probe up. Second When the position sensor senses that the anode probe is in the reset position, it sends a reset signal to the control unit, and the control unit controls the anode probe driver to stop driving.

Preferably, the refined aluminum tank includes a tank body, a cover door and an opening and closing driver. The three-layer liquid is placed in the tank body, and a feeding port is provided at the upper part of the tank body for feeding raw aluminum into the tank. In the body, the driving end of the opening and closing driving part is connected to the cover door, and the control unit is electrically connected to the opening and closing driving part, and is used to control the opening and closing driving part to drive the cover door to close the feeding port and open the feeding port.

Preferably, the control device further includes a transport unit, which is electrically connected to the transport unit and used to compare the actual depth of the lower layer liquid after obtaining the respective depths of the three layers of liquid in the refined aluminum tank through the three-layer liquid depth measuring device. depth and the set depth of the lower layer liquid, and when the depth of the lower layer liquid is lower than the set depth, the transport unit is controlled to transport the raw aluminum to the feeding port. The transport unit is equipped with a position sensor, and the feeding port is provided with a position sensor. There is a sensing point. When the position sensor senses the sensing point, it sends an aluminum adding signal to the control unit. After receiving the aluminum adding signal, the control unit sends a first control signal to control the opening and closing driving member to drive the cover door to open the feeding port. The control unit also includes a timing module for starting timing when the first control signal is sent, and after the timing reaches the feeding time, sending a second control signal to control the opening and closing driving member to drive the cover door to close the feeding port.

In the high-purity aluminum production system provided by the invention, three layers of liquid are placed in the refined aluminum tank 1. The control equipment is used to control the refined aluminum tank 1 to perform the refining process. During the refining process, the three-layer liquid depth measuring device automatically measures the precision online. The three-layer liquid depth in the aluminum tank. Among them, the control unit makes the detection mechanism penetrate into the refined aluminum tank and contact the bottom of the refined aluminum tank, and then completely move it out of the refined aluminum tank, that is, let the detection mechanism Directly contact the bottom of the refined aluminum tank along the longitudinal direction. Practice has shown that the three layers of liquid have different adherents and will be divided into three layers with different colors on the probing mechanism. Specifically, the adherents of the upper liquid are the ones in the refined aluminum tank. The upper liquid (refined aluminum) is solidified and formed, the middle liquid adherent is formed by solidifying the electrolyte in the refined aluminum tank plus a small amount of upper liquid (pure aluminum has poor adhesion to the electrolyte), and the lower liquid adherent is formed by the lower layer in the refined aluminum tank. The liquid (raw aluminum and weighting agent) is solidified by adding electrolyte and a small amount of upper liquid. The segments of these three layers of adherents adhered to the probing mechanism correspond to the depths of the three layers of liquid in the refined aluminum tank, thus The penetration mechanism can be used to display the three-layer liquid depth.

Then, taking advantage of the different colors of the adherends, the control unit also controls the camera mechanism to capture images of the penetration mechanism after moving out of the refined aluminum tank, thereby obtaining the respective depths of the three layers of liquid in the refined aluminum tank through the image, that is, the refined aluminum tank. The depth of the upper liquid, middle liquid and lower liquid allows the operator to grasp the refining process in the refined aluminum tank at any time according to the depth of each layer, and judge whether it is necessary to add raw aluminum and electrolyte, or whether it is necessary to extract aluminum. This system realizes the measurement of the depth of the upper liquid, middle liquid and lower liquid in the refined aluminum tank without power interruption. Compared with the power outage measurement situation, the working efficiency of this system is greatly improved, the energy consumption is reduced, and the measurement The reliability and accuracy have been improved.

Description of the drawings

Figure 1 is a schematic structural diagram of a high-purity aluminum production system according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a three-layer liquid depth measuring device in a high-purity aluminum production system according to an embodiment of the present invention;

Figure 3 is a schematic diagram of the installation position of the three-layer liquid depth measuring device in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 4 is a schematic structural diagram of the temperature measurement device in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 5 is a schematic diagram of the installation position of the temperature measurement device in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 6 is a schematic structural diagram of the cathode height control device in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 7 is a schematic structural diagram of the extreme hydraulic drop measuring device in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 8 is a schematic diagram of the installation position of the extreme hydraulic drop measuring device in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 9 is a schematic diagram of the installation structure of the cover door in the high-purity aluminum production system according to the embodiment of the present invention;

Figure 10 is a schematic diagram of the bottom structure of the cover door in the high-purity aluminum production system according to the embodiment of the present invention.

In the picture: 1. Fine aluminum tank; 11. Tank body; 111. Feeding port; 112. Annular protrusion; 12. Cover door; 121. Groove; 13. Opening and closing driving parts; 131. Pushing parts; 132. Telescopic rod; 133, ear rod; 14, groove frame; 15, connecting rod;

2. Three-layer liquid depth measuring device; 21. Exploration mechanism; 211. Exploration driving part;

2111. Servo motor; 2112. Screw; 2113. Nut seat; 212. Insulating rod; 2121. Groove box; 213. Vertical plate; 214. First flat plate; 215. Second flat plate; 216. Sliding shaft; 22. Camera mechanism ;23. Sensing screen;

3. Temperature measuring device; 31. Temperature measuring mechanism; 32. Temperature measuring driving part; 321. Motor;

322. Screw rod; 323. Connecting block; 324. Guide rod; 325. Mounting plate; 326. First ear plate; 327. Second ear plate;

4. Cathode height control device; 41. Cathode lifting driver; 411. Lifting motor;

412. Transmission mechanism; 4121. Lifting component; 4122. Busbar clamp; 4123. Lifting shaft; 4124. Transmission shaft; 413. Busbar; 42. Cathode rod; 43. Laser measuring piece; 44. Cross beam;

5. Extreme hydraulic drop measuring device; 51. Cathode probe; 52. Anode probe; 53. Anode probe driving part; 531. Driving motor; 532. Installation parts; 533. Lead screw; 534. Connecting piece; 535. Guide rod; 536. Lifting rod.

Detailed ways

The technical solutions in the invention will be clearly and completely described below with reference to the accompanying drawings in the invention. Obviously, the described embodiments are some of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for convenience and simplicity of description, and are not intended to indicate Or it is implied that the device or element mentioned must be provided with a specific orientation, constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In the description of the present invention, the terms "first", "second" and "third" are used for descriptive purposes only and shall not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "connection", "setting", "installation", "fixing", etc. should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It can be detachably connected or integrally connected; it can be directly connected, it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Example

As shown in Figure 1, the high-purity aluminum production system of this embodiment includes a refined aluminum tank 1 and control equipment. Three layers of liquid are placed in the refined aluminum tank 1. The control equipment is used to control the refined aluminum tank 1 to perform the refining process. The control equipment It includes a control unit and a three-layer liquid depth measuring device 2. The control device is also used to control the three-layer liquid depth measuring device 2 to measure the respective depths of the three layers of liquid in the refined aluminum tank 1 during the refining process.

As shown in Figures 2 and 3, the three-layer liquid depth measuring device 2 is arranged above the refined aluminum tank 1 and includes a penetration mechanism 21 and a camera mechanism 22; the control unit is electrically connected to the penetration mechanism 21 for controlling penetration. The mechanism 21 penetrates into the refined aluminum tank 1 and contacts the bottom of the refined aluminum tank 1, and then completely moves out of the refined aluminum tank 1, so that the probe mechanism 21 adheres to the adherends in the three-layer liquid; control The unit is also electrically connected to the camera mechanism 22, which is used to control the camera mechanism 22 to take images of the probe mechanism 21 after the probe mechanism 21 moves out of the refined aluminum tank 1, so as to obtain the respective depths of the three layers of liquid in the refined aluminum tank 1 through the images. .

This high-purity aluminum production system automatically measures the three-layer liquid depth in the refined aluminum tank 1 online through the three-layer liquid depth measuring device 2. Practice has shown that the three layers of liquid have different adherents and will be divided into three layers with different colors on the penetration mechanism 21. Specifically, the adherents of the upper layer liquid, that is, the upper layer liquid (refined aluminum) in the refined aluminum tank 1, solidifies to form , the middle liquid adherent is solidified by the electrolyte in the refined aluminum tank 1 plus a small amount of upper liquid (pure aluminum has poor adhesion to the electrolyte), and the lower liquid adherent is formed by solidifying the lower liquid in the refined aluminum tank 1 (raw aluminum and weighted aluminum). agent) plus electrolyte and a small amount of upper liquid to solidify. The segments of these three layers of adherents adhered to the penetration mechanism 21 correspond to the depths of the three layers of liquid in the refined aluminum tank 1, so that the penetration can be achieved. Mechanism 21 displays three liquid depths.

Then, taking advantage of the different colors of the adherends, the control unit also controls the camera mechanism 22 to take an image of the penetration mechanism 21 after it has moved out of the refined aluminum tank 1, so as to obtain the respective characteristics of the three layers of liquid in the refined aluminum tank 1 through this image. Depth, that is, the depth of the upper liquid, middle liquid and lower liquid in the refined aluminum tank 1, so that the operator can grasp the refining process in the refined aluminum tank 1 at any time according to the depth of each layer, and judge whether it is necessary to add raw aluminum and electrolyte, or whether Aluminum needs to be produced. This system realizes the measurement of the depth of the upper liquid, middle liquid and lower liquid in the refined aluminum tank 1 without power interruption. Compared with the power outage measurement situation, the working efficiency of this system is greatly improved, the energy consumption is reduced, and The reliability and accuracy of measurements are improved.

In this embodiment, a first position sensor is provided on the penetration mechanism 21 for sensing the position of the penetration mechanism 21. The control unit includes a timing module. The first position sensor detects that the penetration mechanism 21 is in contact with the refined aluminum. When the bottom of the tank 1 is in contact with the position, a depth measurement signal is sent to the control unit. After receiving the depth measurement signal, the control unit causes the timing module to start timing. After the timing module reaches the first set time, the control unit controls the penetration mechanism 21 to completely Move out the refined aluminum tank 1, and when the first position sensor senses that the penetration mechanism 21 is in the position of completely moving out of the fine aluminum tank 1, it sends a shooting signal to the control unit. After receiving the shooting signal, the control unit controls the camera mechanism 22 to photograph the penetration mechanism 21. Image. This first setting time can be set according to the working conditions, so that the adherends of the three-layer liquid can fully adhere to the penetration mechanism 21 .

In this embodiment, the penetration mechanism 21 includes a penetration driving part 211 and an insulating rod 212. The penetration driving part 211 is electrically connected to the control unit and is used to drive the insulating rod 212 down to penetrate into the refined aluminum groove under the control of the control unit. 1 and move up and out of the refined aluminum tank 1. In this embodiment, a trough frame 14 is provided above the trough body 11 of the refined aluminum trough 1. The penetration driving part 211 is installed on the trough frame 14, and its driving end is connected to an insulating rod 212. The material of the insulating rod 212 is SiC. SiC material The insulating rod 212 inserted into the three-layer liquid of refined aluminum will neither affect the electrolytic aluminum process nor pollute the three-layer liquid. In this embodiment, the insulating rod 212 extends into the refined aluminum tank 1 through the feeding port 111 .

In this embodiment, the three-layer liquid depth measuring device 2 also includes an intensifying screen 23. The intensifying screen 23 is arranged above the refined aluminum tank 1. The control unit controls the penetration driving member 211 to drive the insulating rod 212 to rise and move out of the refined aluminum tank 1. and make the lower part of the insulating rod 212 with adherent adhered correspond to the position of the intensifying screen 23. At this time, the camera mechanism 22 and the intensifying screen 23 are respectively on both sides of the insulating rod 212. The setting position of the camera mechanism 22 is as follows As shown in the figure, it can be installed on a separate support frame. The intensifying screen 23 is used to improve the contrast of the image captured by the camera mechanism 22 when it captures the lower part of the insulating rod 212 .

In this embodiment, the intensifying screen 23 is a black body used as a background plate. When taking a picture, the insulating rod 212 taken out from the refined aluminum tank 1 is moved in front of the black body, thereby improving the contrast of each layer in the image. In other implementations, other intensifying devices that can improve contrast can also be selected to achieve this goal.

In this embodiment, in order to enable the penetration mechanism 21 to perform depth measurements multiple times, the insulating rod 212 needs to be properly cleaned, so the system is also equipped with an annular cleaning brush on the slot frame 14, and the control unit is also used to After the camera mechanism 22 takes a picture of the lower part of the insulating rod 212, the penetration driving member 211 is controlled to drive the insulating rod 212 to move upward until the lower part of the insulating rod 212 passes through the cleaning brush, so that the cleaning brush removes the dirt adhered to the lower part of the insulating rod 212. The cleaning brush can be positioned above the intensifying screen 23 to prevent the adhering matter from passing through the cleaning brush before shooting, causing the adhering matter to detach.

In this embodiment, the penetration driving member 211 is installed on the slot frame 14 through a fixed seat. The fixed base includes a vertical plate 213 and a first flat plate 214. The vertical plate 213 is fixed on the inner surface of the trough frame 14. The first flat plate 214 is fixed on the upper end of the vertical plate 213. The penetration driving member 211 includes a servo motor 2111, a screw 2112 and a Nut seat 2113. The servo motor 2111 is fixed on the first flat plate 214 and is connected to the screw 2112 for driving the screw 2112 to rotate. The screw 2112 passes through the first flat plate 214 and is connected to the first flat plate 214 for rotation. The nut seat 2113 is connected to the screw. 2112 threaded connection, the upper part of the insulating rod 212 is fixedly connected with the nut seat 2113.

Specifically, the upper part of the insulating rod 212 is installed in a slot box 2121 with a slot, and the upper part of the insulating rod 212 is fixedly connected to the nut seat 2113 through the slot box 2121. In other embodiments, the penetration driving member 211 may also be a driving cylinder or other driving structure that can drive the insulating rod 212 to move linearly.

In this embodiment, in order to ensure the smooth linear movement of the nut seat 2113, the fixed seat also includes a second flat plate 215 and two sliding shafts 216. The second flat plate 215 is fixed on the lower end of the vertical plate 213, and the two sliding shafts 216 are respectively provided on the screw rods. 2112 on both sides, and the sliding shaft 216 is connected between the first flat plate 214 and the second flat plate 215. Both ends of the nut seat 2113 in the horizontal direction are slidingly connected to the corresponding sliding shafts 216 respectively.

In this embodiment, the control unit also includes an identification module and a measurement module. The control unit obtains the depths of the upper liquid, middle liquid and lower liquid through the images acquired by the camera mechanism 22, specifically including:

The identification module identifies the dividing line between two adjacent layers of liquid in the image, as well as the dividing line between the upper liquid layer and the insulating rod 212, to determine the position of each layer. The measurement module measures the upper liquid layer and the middle liquid layer according to the position of each layer. and the depth of the underlying fluid.

Alternatively, the identification module determines the position of each layer of the upper liquid, middle liquid, and lower liquid based on the mapping table between the image color and the layer category stored in it, and the measurement module measures the upper liquid, middle liquid, and lower layer based on the position of each layer. liquid depth.

In this embodiment, a mapping table may be set in the control unit, and the mapping table may include a mapping relationship between image colors and layer categories.

As another optional implementation, the category of each layer can be determined according to the order of each layer in the image. For example, from top to bottom, the first layer is the raw material layer, the second layer is the electrolyte layer, and the third layer is the refined aluminum layer. Determine the location of each layer by identifying dividing lines in the image.

In this embodiment, the control equipment also includes a temperature measurement device 3 and a temperature adjustment device. The control equipment is also used to control the temperature measurement device 3 to sense the current temperatures of the three liquid layers in the refined aluminum tank 1 during the refining process; and, use It is used to control the temperature-regulating device to adjust the temperature of the three-layer liquid in the refined aluminum tank 1 during the refining process; the control unit is also electrically connected to the temperature measuring device 3 and the temperature-regulating device, and is used to communicate with the three-layer liquid according to the respective set temperatures of the three-layer liquid. The current temperature of each liquid is used to obtain the temperature difference of each of the three-layer liquids, and the temperature adjustment amount required by each of the three-layer liquids is obtained based on the temperature difference of each of the three-layer liquids and the respective depth of the three-layer liquids, and then the required temperature adjustment amount of each of the three-layer liquids is obtained. The temperature adjustment amount controls the output of the temperature adjustment device.

In this embodiment, as shown in Figures 4 and 5, the temperature measuring device 3 is movably connected above the refined aluminum tank 1 in the vertical direction, and the control unit is used to drive the detection end of the temperature measuring device 3 to descend into the refined aluminum tank 1 , thereby obtaining the current temperatures of each of the three liquid layers in refined aluminum tank 1.

In this embodiment, the temperature measurement device 3 includes a reading mechanism, a temperature measurement mechanism 31 and a temperature measurement driving part 32. The temperature measurement driving part 32 is connected to the temperature measurement mechanism 31 and is used to drive the temperature measurement mechanism 31 up and down so that the temperature measurement mechanism 31 can be measured. The temperature mechanism 31 extends into the liquid level of each layer in the refined aluminum tank 1 .

In the three-layer refined aluminum electrolytic production process, the three layers of liquid in the refined aluminum tank 1 need to be maintained at different set temperatures. It should be noted that the aforementioned three-layer liquid depth measuring device 2 has measured the depth of each layer of liquid. The depth of each layer of liquid can be temporarily stored in the control unit for recall. The control unit can measure the depth of each layer of liquid according to the depth of each layer of liquid and the temperature. The current position of the mechanism 31 is determined by the lifting stroke corresponding to the temperature measurement mechanism 31 reaching each layer, and the temperature measurement driving member 32 is controlled to drive the temperature measurement mechanism 31 to descend the corresponding stroke, so that the temperature measurement mechanism 31 can reach the corresponding layer.

In this embodiment, the control unit obtains the required temperature adjustment amount of each of the three-layer liquids based on the temperature differences of the three-layer liquids and the respective depths of the three-layer liquids, that is, how much heating is required to reach the set temperature, and then based on the three-layer liquids The output of the temperature adjustment device of the refined aluminum tank 1 is controlled by the required temperature adjustment amount of each liquid. This setting method can directly control the temperature of each layer of liquid in the refined aluminum tank 1 online in real time. This precise control can ensure that each layer of liquid is at the optimal set temperature, effectively improving production efficiency and improving product quality.

In this embodiment, the control unit may be a commercially available industrial computer or PLC controller, such as an industrial computer model IPC-610L produced by Advantech. The control unit also includes a calculation module, which can complete the above-mentioned process of obtaining the temperature adjustment amount required for each of the three layers of liquid by presetting a calculation formula in the calculation module. The calculation formula is related to the working temperature, the composition of each layer of liquid, and the temperature adjustment. The device power, mechanical performance, volume of the refined aluminum tank and other factors are related, and can be determined by the staff based on the above factors before being input into the control unit.

In this embodiment, the reading mechanism is electrically connected to the temperature measuring mechanism 31, and is used to receive the temperature electrical signal measured by the temperature measuring mechanism 31, generate temperature data according to the temperature electrical signal, and output the temperature data. The reading mechanism can use the commercially available WPK6 series single-channel thermal meter, which can display real-time temperature data. The staff can obtain the real-time temperature data of each layer through the reading mechanism. Therefore, this system can automatically measure the temperature of the aluminum liquid in the refined aluminum tank 1 to improve measurement efficiency and temperature measurement accuracy, and can avoid dangers caused by manual temperature measurement. Moreover, the temperature measuring device 3 can measure the temperature of each layer separately to obtain the detailed temperature of each layer.

In this embodiment, a height sensor can be provided on the temperature measurement mechanism 31 to sense the current height of the temperature measurement mechanism 31 so that the control unit can determine the current height of the temperature measurement mechanism 31 and the respective depths of the three layers of liquid to be measured. Position to control the lifting stroke of the temperature measuring mechanism 31, so as to accurately reach the position of each layer of liquid.

In this embodiment, the temperature measurement mechanism 31 includes a thermocouple and a thermocouple protective sleeve. The thermocouple protective sleeve is connected to the temperature measuring driver 32, and the thermocouple is placed in the thermocouple protective sleeve. Therefore, the temperature measurement driving member 32 can synchronously drive the movement of the thermocouple and the thermocouple protective sheath. The thermocouple is connected to the reading mechanism and used to measure the temperature of each layer respectively and send a temperature electrical signal to the reading mechanism. Specifically, the thermocouple can be a commercially available K-type thermocouple.

Since the molten liquid in the refined aluminum tank 1 has the characteristics of high temperature and strong oxidation, conventional thermocouple temperature measurement has problems such as short service life, inability to continuously measure for a long time, and high use and maintenance costs. Putting a thermocouple protective sleeve on the outside of the thermocouple can effectively extend the service life of the thermocouple. Preferably, the thermocouple protective sheath is made of silicon nitride material. Further, the outer side of the thermocouple protective sheath is coated with a corrosion-resistant layer, and the corrosion-resistant layer is made of titanium dioxide material.

In this embodiment, the temperature measuring driving member 32 includes a motor 321, a screw rod 322, a nut, a connecting block 323 and a guide rod 324. The screw rod 322 extends along the vertical direction, and the nut is sleeved on the screw rod 322 . The motor 321 is connected to the screw rod 322 and is used to drive the screw rod 322 to rotate, thereby driving the nut to move along the extension direction of the screw rod 322 . The nut is connected to the connecting block 323, and the guide rod 324 extends in the vertical direction and penetrates the connecting block 323 for guiding the nut and the connecting block 323 to move in the vertical direction. The temperature measuring mechanism 31 is installed on the connecting block 323 and can move in the vertical direction along with the nut and the connecting block 323 . The screw nut mechanism can achieve more precise lifting and lowering movements, so that the thermocouple can reach each aluminum liquid layer.

Specifically, in this embodiment, the control unit is connected to the motor 321 through wires. By controlling the rotation direction of the motor 321, the raising or lowering of the nut is controlled, thereby controlling the raising and lowering of the temperature measuring mechanism 31. Of course, it can be understood that the temperature measurement driving member 32 can also adopt existing structures such as cylinders, hydraulic cylinders, and electric push rods.

More specifically, the temperature measurement driving member 32 also includes a mounting plate 325 extending in the vertical direction. A first ear plate 326 and a second ear plate 327 are fixedly connected to the upper and lower ends of the mounting plate 325 respectively. The first ear plate 326 and the second ear plate 327 are arranged horizontally. The motor 321 is installed on the upper side of the first ear plate 326, and the upper and lower ends of the screw rod 322 are rotatably connected to the first ear plate 326 and the second ear plate 327 through bearings respectively. The output rotating shaft of the motor 321 is connected to the upper end of the screw rod 322 for driving the screw rod 322 to rotate. The number of guide rods 324 is two, and the two guide rods 324 are respectively located on the left and right sides of the screw rod 322. The upper and lower ends of the guide rod 324 are connected to the first ear plate 326 and the second ear plate 327 respectively. Preferably, the mounting plate 325, the first ear plate 326 and the second ear plate 327 are all made of Q235 steel.

In this embodiment, the control device may also be configured with a warning device. The control unit has pre-stored standard temperature ranges for each layer. The control unit is used to determine the layer where the temperature measuring mechanism 31 is located based on the lifting stroke of the temperature measuring mechanism 31, and then determine the standard temperature range of the layer. The control unit is electrically connected to the reading mechanism, and is used to obtain the actual measured temperature data of the layer, and compare the actual measured temperature data with the standard temperature range. The control unit is electrically connected to the alarm, and is used to send a start signal to the alarm when the layered temperature data exceeds the standard temperature range. The alarm sends a warning based on the start signal to prompt the staff to handle the situation in a timely manner.

In this embodiment, the temperature measuring device 3 is installed on the trough frame 14 , in which the temperature measuring driving member 32 is connected to the trough frame 14 through the mounting plate 325 , and the bottom end of the temperature measuring mechanism 31 extends into the refined aluminum tank 1 through the feeding port 111 .

In this embodiment, as shown in Figure 6, the control equipment also includes a cathode height control device 4. The cathode height control device 4 includes a cathode lifting driver 41 and a cathode rod 42. The bottom end of the cathode rod 42 is immersed in the refined aluminum tank 1. In the upper liquid, the control unit includes an acquisition module. The acquisition module is used to obtain the real-time depth of the cathode rod 42 immersed in the upper liquid in the refined aluminum tank 1. The control unit is also electrically connected to the cathode lifting driver 41 to determine whether the cathode rod 42 is immersed in the upper liquid. Is the real-time depth of the liquid within the set range? If not, the cathode lifting driver 41 is controlled to drive the cathode rod 42 up and down to adjust its current height until the real-time depth of the cathode rod 42 immersed in the upper liquid is within the set range. Inside.

In this embodiment, the acquisition module includes an image recognition component, which is used to obtain the current height of the cathode rod 41 through image recognition of the marking value set on the cathode rod 41. The current height of the cathode rod 41 can also be obtained directly by human eyes and then input. to the control unit. The acquisition module also includes a laser measuring part 43, which is used to obtain the current height of the liquid level of the aluminum liquid through the time when the laser light is reflected on the liquid surface. The laser measuring part 43 is installed on the tank frame 14 and is located above the refined aluminum tank 1. The acquisition module sends the current height of the cathode rod 41 and the current height of the aluminum liquid level to the calculation module, and the calculation module calculates the real-time depth of the cathode rod 41 immersed in the aluminum liquid based on the two.

The inventor found that arcing and sparking or short circuits that often occur during the three-layer electrolytic refining process are related to the depth of the cathode immersed in the aluminum liquid. If the depth of the cathode immersed in the aluminum liquid is too shallow, arcing and sparking will occur. If the cathode is immersed too deeply in the aluminum liquid, the cathode may come into contact with the electrolyte and cause a short circuit. Therefore, in order to avoid these problems, the system of this embodiment automatically controls the depth of the cathode rod 41 immersed in the aluminum liquid (i.e., the upper liquid of the three-layer liquid) through the cathode height control device 4. After real-time adjustment, the depth of the cathode rod 41 immersed in the aluminum liquid is always It is within the appropriate setting range. It will not be too shallow, which will lead to arcing and ignition, nor will it be too deep, which will cause the cathode to contact the electrolyte and cause a short circuit. This will avoid such problems and interrupt the refining process, which will help ensure Production safety and normal production ensure the stability of the refining process, while also improving production efficiency and ensuring product quality.

Since the aluminum addition step (adding refining raw materials to the refined aluminum tank 1), the aluminum extraction step (obtaining the refined product from the refined aluminum tank 1) and changes over time are the main reasons for the changes in the aluminum liquid level during the entire refining process, Therefore, during the refining process, this system adjusts the real-time depth of the cathode rod 41 immersed in the aluminum liquid every second set time interval/completes the step of adding aluminum/completes the step of extracting aluminum, so that the real-time depth is within the set range.

Specifically, in this embodiment, the control unit is also used to receive the detection trigger signal triggered after the operator performs the aluminum adding/extracting operation on the refined aluminum tank 1, and the control unit is also used to time/time the detection trigger signal upon receipt. The module sends a control instruction to the acquisition module every time the second set time is calculated, driving it to acquire the real-time depth of the cathode rod 41 immersed in the aluminum liquid. In this embodiment, the second set time may be one hour, that is, the control unit sends a control instruction to the acquisition module every hour to drive it to acquire the real-time depth of the cathode rod 41 immersed in the upper liquid in the refined aluminum tank 1 .

This setting method can not only prevent the immersion depth of the cathode rod 41 from exceeding the set range due to changes in the liquid level during operation, but also prevent the immersion depth of the cathode rod 41 from exceeding the set range due to changes in the liquid level over time or other circumstances, that is, The active and passive factors that cause the immersion depth of the cathode rod 41 to exceed the set range are comprehensively considered.

The control equipment of the refined aluminum tank 1 can be equipped with a main console. The main console is used to monitor the refining process. After the operator completes the aluminum addition operation steps and the aluminum extraction operation steps, the detection trigger signal is generated through the main console and sent to the control unit, thereby triggering the cathode height control device 4 to perform the step of automatically controlling the depth of the cathode rod 41 immersed in the aluminum liquid.

In this embodiment, the real-time depth of the cathode rod 41 immersed in the aluminum liquid specifically refers to the distance between the bottom end of the cathode rod 41 and the aluminum liquid surface. The setting range of the real-time depth is preferably 5cm to 15cm. When the obtained real-time depth is not When within the setting range, it will automatically adjust to any depth between 5cm and 15cm. After the system of this embodiment was tried, it was found that arcing and sparking or short circuiting caused by problems with the cathode and liquid level did not occur again.

In this embodiment, the cathode lifting driving member 41 includes a lifting motor 411, a transmission mechanism 412 and a busbar 413. A plurality of cathode rods 41 serving as cathodes are connected to the busbar 413, and the transmission mechanism 412 is connected between the lifting motor 411 and the busbar 413. The lifting motor 411 is electrically connected to the control unit, and is used to drive the transmission mechanism 412 to drive the busbar 413 to rise and fall, thereby driving the cathode rod 41 to rise and fall to adjust the current height of the cathode.

In this embodiment, the transmission mechanism 412 includes a lifting component 4121. The lifting component 4121 includes a busbar clamp 4122, a lifting shaft 4123 and a transmission shaft 4124. There are two busbar clamps 4122, which are used to clamp both ends of the busbar 413. The lifting shaft 4123 is also provided with two, and are connected to each busbar clamp 4122 respectively. The end of the transmission shaft 4124 is connected to the output end of the lifting motor 411, and the shaft body is drivingly connected to the two lifting shafts 4123, which are used to drive the lifting motor 411 under the driving of the lifting motor 411. The two lifting shafts 4123 drive the two busbar clamps 4122 to rise and fall synchronously, so that the busbar 413 can be kept horizontal during the lifting process, so that the immersion depth of each cathode rod 41 is consistent.

In this embodiment, there are two groups of bus bars 413, and eight cathode rods 41 are provided on each group of bus bars 413. The transmission mechanism 412 includes two sets of lifting assemblies 4121, and each set of lifting assemblies 4121 corresponds to two sets of busbars 413 in one-to-one correspondence.

The trough frame 14 is provided with a cross beam 44, a transmission shaft 4124 is rotatably connected to the cross beam 44, and a lifting motor 411 is also connected to the cross beam 44. The lifting motor 411 is a motor, model G-A-13-002-9, connected to the transmission shaft 4124 through a coupling, and the transmission shaft 4124 and the lifting shaft 4123 are connected through a worm gear pair, that is, a turbine is set on the transmission shaft 4124. A worm rod section is provided on the lifting shaft 4123. The bottom end of the lifting shaft 4123 is rotatably connected to the bus clamp 4122 through bearings, etc. When the transmission shaft 4124 is driven to rotate by the lifting motor 411, it can drive the lifting shaft 4123 to lift.

In this embodiment, the control equipment also includes an extreme hydraulic pressure drop measuring device 5, which is used to obtain the extreme hydraulic pressure drop between the upper liquid and the lower liquid in the refined aluminum tank 1 during the refining process. It should be noted that the refined aluminum tank 1 has an anode and a cathode, the anode is connected to the lower layer liquid, and the cathode rod 41 serving as the cathode is connected to the upper layer liquid. During electrolytic refining, the anode and cathode are connected to a power source, causing direct current to be generated between the cathode and anode. Under the action of direct current, the melt in the refined aluminum tank 1 produces an electrochemical reaction. The raw aluminum at the bottom of the refined aluminum tank 1 dissolves to produce aluminum ions, which move to the cathode to form a refined aluminum layer on the upper part of the refined aluminum tank 1 . The remaining impurities from the electrolysis reaction accumulate in the anode conductor at the bottom of the tank and the electrolyte layer in the middle, causing the polar liquid drop between the cathode and anode to increase. Therefore, in this embodiment, the impurity content in the refined aluminum tank 1 can be determined by monitoring the pressure drop value between the extreme liquids through the extreme liquid pressure drop measuring device 5 .

Specifically, the polar liquid drop measuring device 5 includes a cathode probe 51, an anode probe 52 and an anode probe driver 53. The cathode probe 51 is electrically connected to the cathode rod 42 to be electrically connected to the upper liquid in the refined aluminum tank 1 through the cathode rod 42. The anode probe driver 53 is connected to the anode probe 52 and is used to drive the anode probe 52 up and down so that the anode probe 52 contacts the lower liquid in the refined aluminum tank 1. The control unit is also electrically connected to the cathode probe 51 and the anode probe 52 respectively. When the anode probe 52 contacts the lower liquid in the refined aluminum tank 1, the extreme liquid drop between the upper liquid and the lower liquid in the refined aluminum tank 1 is obtained, thereby determining the impurity content in the refined aluminum tank 1.

Among them, the cathode probe 51 and the anode probe 52 are both made of conductive materials. The cathode probe 51 and the anode probe 52 are electrically connected to the control unit through wires or signal transceiver modules such as wireless and Bluetooth. Preferably, both the cathode probe 51 and the anode probe 52 are made of stainless steel. Furthermore, the anode probe 52 and the cathode probe 51 can be commercially available K-type screw probes. Of course, the cathode probe 51 and the anode probe 52 can also be made of other materials, such as copper alloy and other highly conductive materials.

When the anode probe driver 53 drives the anode probe 52 down to contact the lower liquid in the refined aluminum tank 1 . The measurement loop composed of the cathode probe 51, the anode probe 52 and the control unit is turned on, allowing current to pass through the control unit. At this time, the control unit can measure the extreme liquid drop between the cathode and the anode in the refined aluminum tank 1. Specifically, the control unit includes a voltage measurement module for measuring the hydraulic pressure drop of the pole. The voltage measurement module can be a commercially available voltmeter, such as the OHR-C200 model voltmeter produced by Hongrun Company.

In this embodiment, a second position sensor is provided on the anode probe 52 for sensing the position of the anode probe 52 . The second position sensor sends a signal when it senses that the anode probe 52 is in contact with the lower liquid in the refined aluminum tank 1 . The pressure signal is sent to the control unit. After receiving the pressure measurement signal, the control unit measures the extreme pressure drop between the upper liquid and the lower liquid in the refined aluminum tank 1; after the measurement is completed, the control unit controls the anode probe driver 53 to drive the anode probe 52 to rise. , when the second position sensor senses that the anode probe 52 is in the reset position, it sends a reset signal to the control unit, and the control unit controls the anode probe driver 53 to stop driving.

In the large three-layer liquid refined aluminum tank 1, the amount of electrode liquid is large. Therefore, in order to ensure the efficiency of producing refined aluminum, multiple pairs of cathodes and anodes are installed in the refined aluminum tank 1. Since the impurity content of the polar liquid between each pair of cathodes and anodes is different, measuring only the pressure drop between a set of cathodes and anodes is not enough to reflect the polar liquid drop in the entire refined aluminum tank 1, nor is it sufficient Determine the operating status of refined aluminum tank 1. Therefore, in this embodiment, there are multiple cathode rods 42, multiple cathode probes 51 corresponding to each cathode rod 42, and multiple anode probes 52, and the anode probes 52 and the cathode probes 51 are arranged in pairs. Thereby, the control unit obtains the extreme pressure drops at multiple locations between the upper liquid and the lower liquid in the refined aluminum tank 1 .

Specifically, the number of cathode probes 51 and cathode rods 42 is the same as 16. These 16 cathode probes 51 are divided into two groups, each group has 8 cathode probes 51 . Two sets of cathode probes 51 are respectively located on the left and right sides of the refined aluminum tank 1 and correspond to the cathode rods 42 one by one.

The number of anode probes 52 is also 16. These anode probes 52 are also divided into two groups and correspond one to one to the cathode probes 51. Anode probe driving parts 53 are respectively installed on the left and right sides of the refined aluminum tank 1. Each anode probe 52 is divided into two groups. The probe driver 53 is connected to a set of anode probes 52 . An anode probe driver 53 is used to drive a group of anode probes 52 to rise and fall synchronously, so that the anode probes 52 contact the anode in the refined aluminum tank 1. Of course, it can be understood that the installation positions of the anode probe 52 and the cathode probe 51 should be adjusted according to the positions of multiple pairs of anodes and cathodes in the refined aluminum tank 1 .

In this embodiment, there are multiple voltage measurement modules, and each voltage measurement module is connected to a pair of anode probes 52 and cathode probes 51 for when the anode probe 52 comes into contact with the lower liquid in the refined aluminum tank 1, The polar pressure drop between the anode and its corresponding cathode is measured. The extreme pressure drop between multiple sets of anodes and cathodes in the refined aluminum tank 1 can be measured simultaneously through multiple voltage measurement modules.

The control unit is used to receive data signals sent by multiple voltage measurement modules and output multiple extreme hydraulic pressure drop data so that workers can observe the extreme hydraulic pressure drop values everywhere in the refined aluminum tank 1 in real time. Specifically, the control unit can be configured with a data output module, and the data output module can use a commercially available liquid crystal display.

The anode probe driving member 53 includes a lifting rod 536 and two driving motors 531 . The lifting rod 536 extends along the horizontal direction, and the plurality of anode probes 52 are installed on the lifting rod 536 . The two driving motors 531 are respectively connected to the two ends of the lifting rod 536 in transmission, and are used to push the lifting rod 536 to lift.

Specifically, the output end of the driving motor 531 is provided with a screw 533, a nut, a connecting piece 534 and a guide rod 535. Among them, the screw 533 extends along the vertical direction, and the nut is sleeved on the screw 533 . The driving motor 531 is connected to the screw 533 and is used to drive the screw 533 to rotate, thereby driving the nut to move along the extension direction of the screw 533 . The nut is connected to the connecting piece 534. The guide rod 535 extends in the vertical direction and penetrates the connecting piece 534 for guiding the nut and the connecting piece 534 to move in the vertical direction. The lifting rod 536 is fixedly connected to the connecting piece 534 and can move in the vertical direction along with the nut and the connecting piece 534 .

The anode probe driver 53 also includes a mounting member 532 . The mounting member 532 extends in the vertical direction, and two horizontally arranged ear plates are respectively fixedly connected to the upper and lower ends of the mounting member 532 . The driving motor 531 is installed on the upper side of the upper lug plate, and the upper and lower ends of the screw 533 are rotatably connected to the two lug plates through bearings respectively. The output rotating shaft of the driving motor 531 is connected to the upper end of the lead screw 533 . The number of guide rods 535 is two. The two guide rods 535 are located on the left and right sides of the screw 533 respectively. The upper and lower ends of the guide rod 535 are respectively connected to the two ear plates. Preferably, the mounting piece 532 and the two ear plates are made of Q235 steel.

Of course, it can be understood that the driving motor 531 can also adopt existing structures such as cylinders, hydraulic cylinders, and electric push rods.

In this embodiment, the descending stroke of the anode probe 52 is pre-stored in the control unit, that is, the distance between the initial position of the anode probe 52 and the anode. The control unit is electrically connected to the driving motor 531 and is used to send a driving signal to the driving motor 531 when receiving a starting command from a worker. After receiving the drive signal, the drive motor 531 starts to drive the screw 533 to rotate, thereby driving the anode probe 52 to descend a preset stroke, so that the anode probe 52 contacts the lower liquid, thereby electrically connecting the anode, or directly electrically connecting the anode. When the anode probe 52 is connected to the anode, the measurement loop between the cathode probe 51, the voltage measurement module and the anode probe 52 is connected, the voltage measurement module collects the voltage signal, and then measures the polar hydraulic pressure drop between the cathode and the anode. When receiving the voltage signal output by the voltage measurement module, the control unit sends a reset signal to the driving motor 531 . The drive motor 531 drives the screw 533 to reverse rotation according to the reset signal, so that the anode probe 52 rises to the initial position, and the measurement is completed.

In this embodiment, the refined aluminum tank 1 includes a tank body 11, a cover door 12 and an opening and closing driver 13. The tank body 11 contains three layers of liquid, and a feeding port 111 is provided at the upper part of the tank body 11 for adding raw aluminum. In the tank body 11, the driving end of the opening and closing driving part 13 is connected to the cover door 12, and the control unit is electrically connected to the opening and closing driving part 13, and is used to control the opening and closing driving part 13 to drive the cover door 12 to close the feeding port 111 and open the feeding port 111. .

Specifically, the directly above the feeding port 111 is set as the first position, and one side of the feeding port 111 is set as the second position. The opening and closing driving member 13 is connected to the cover door 12 and is used to drive the cover door 12 to move the cover door 12 between the first position and the second position. When the cover door 12 is in the first position, the feeding port 111 can be closed, and when the cover door 12 is in the second position, the feeding port 111 can be opened.

The cover door 12 is made of aluminum alloy material. Moreover, the thickness of the cover door 12 is approximately 100 mm. By providing the cover door 12 to close the feeding port 111, the inside of the tank 11 can be kept warm. In addition, when it is necessary to add materials into the tank 11, the cover door 12 can be moved from the first position to the second position by opening and closing the driving member 13, and the feeding port 111 can be opened to facilitate the staff to add raw aluminum into the tank 11. . Therefore, the tank body 11 can effectively prevent the temperature in the tank from decreasing, thereby reducing the impact on the current distribution in the tank, and will not affect the normal production.

In this embodiment, the cover door 12 is plate-shaped. The cover door 12 is hinged to the upper end of the tank body 11 through the connecting rod 15 . The opening and closing driving member 13 is used to push the cover door 12 to swing the connecting rod 15, thereby moving the cover door 12 between the first position and the second position.

Further, the opening and closing driving member 13 includes a pushing member 131 and an ear rod 133 . A trough frame 14 is installed on the upper end of the trough body 11, and the pushing member 131 is installed on the trough frame 14 of the trough body 11. The pushing member 131 includes a telescopic rod 132 extending in the horizontal direction and capable of telescopic in the horizontal direction. One end of the telescopic rod 132 is connected to the cover door 12 through the ear rod 133 for pushing the ear rod 133 and thereby driving the cover door 12 in the first position. move between position and second position. The ear rod 133 includes a first section and a second section. The first section of the ear rod 133 extends in the vertical direction, its lower end is connected to the cover door 12 , and its upper end is hinged to the second section of the ear rod 133 . The other end of the second section of the ear rod 133 is connected to the telescopic rod 132 . When the telescopic rod 132 extends, the ear rod 133 pushes the cover door 12 so that the cover door 12 moves to the first position. When the telescopic rod 132 retracts, the ear rod 133 pulls the cover door 12 so that the cover door 12 moves to the second position. Since the temperature of the tank body 11 is relatively high, the telescopic rod 132 and the ear rods 133 should be made of high temperature resistant materials. Preferably, the telescopic rod 132 and the ear rod 133 are made of A3 stainless steel material.

Furthermore, the pushing member 131 is a cylinder, and the cylinder can be an existing product, for example, the cylinder model MSPCB32 produced by Misumi Company. Of course, it can be understood that the pushing member 131 can also be a hydraulic cylinder or an electric screw, etc.

In this embodiment, an annular protrusion 112 is provided on the upper edge of the feeding port 111 . The bottom of the cover door 12 is provided with a groove 121. The groove 121 is cylindrical. The groove 121 is used to accommodate the annular protrusion 112 therein to achieve sealing between the cover door 12 and the feeding port 111. Further, The heat preservation effect of the cover door 12 on the electrolyte inside the tank 11 is improved.

Furthermore, a thermal insulation layer is provided in the groove 121 of the cover door 12 to enhance the thermal insulation effect of the cover door 12 . Preferably, the insulation layer is made of calcium silicate material.

In this embodiment, the control equipment also includes a transport unit. The control unit is electrically connected to the transport unit and is used to compare the actual depth of the lower layer liquid after obtaining the respective depths of the three layers of liquid in the refined aluminum tank 1 through the three-layer liquid depth measuring device 2. depth and the set depth of the lower layer liquid, and when the depth of the lower layer liquid is lower than the set depth, the transport unit is controlled to transport the raw aluminum to the feeding port 111.

The transport unit is provided with a position sensor, and a second sensing point is provided at the feeding port 111. When the position sensor senses the second sensing point, it sends an aluminum-adding signal to the control unit. After receiving the aluminum-adding signal, the control unit sends out a third aluminum-adding signal. A control signal is used to control the opening and closing driver 13 to drive the cover door 12 to open the feeding port 111. The timing module of the control unit is also used to start timing when the first control signal is sent, and send out the second control after the timing reaches the feeding time. The signal controls the opening and closing driving member 13 to drive the cover door 12 to close the feeding port 111.

In this embodiment, the transport unit is an AGV trolley, that is, an automatic guided transport vehicle. By pre-setting the movement route of the AGV trolley, the AGV trolley can automatically move back and forth between the storage point of the aluminum ingot and the refined aluminum tank 1. When the AGV trolley arrives at the storage point of the aluminum ingots, the first prompt signal is sent to the staff to remind the staff to transport the aluminum ingots to the AGV trolley. When the AGV trolley reaches the feeding port 111 of the refined aluminum tank 1, the AGV trolley sends a second prompt signal, that is, an aluminum addition signal, to the control unit. The control unit sends a first control signal to the opening and closing driving member 13 based on the second prompt signal. The opening and closing driving member 13 controls the telescopic rod 132 to contract according to the first control signal to drive the cover door 12 to move from the first position to the second position, thereby opening the feeding port 111 to facilitate the staff to feed.

It should be noted that the aluminum ingot storage point is provided with a first sensing point, and the feeding port 111 of the refined aluminum tank 1 is provided with a second sensing point. When the AGV trolley arrives at the aluminum ingot storage point, the position sensor can sense the first sensing point, thereby sending the first prompt signal; when the AGV trolley arrives at the feeding port 111, the position sensor can sense the second sensing point, thus Send a second reminder signal.

Of course, in other embodiments, a timer can also be set in the AGV car. The timer is used to calculate the running time of the AGV car, thereby knowing the location of the AGV car. The AGV car travels back and forth between the aluminum ingot storage point and the refined aluminum trough 1 once as an operation cycle. Since the distance between the aluminum ingot storage point and the refined aluminum trough 1 remains unchanged, the operation cycle of the AGV car also remains basically the same. Change. When the running time of the AGV trolley reaches one running cycle, it is determined that the AGV trolley has reached the feeding port 111 of the refined aluminum tank 1, and a second prompt signal is sent to the control unit through the timer.

In this embodiment, the top of the tank 11 is closed for heat preservation. However, in order for the cathode height control device 4 and the extreme hydraulic drop measuring device 5 to detect smoothly, holes can be opened at corresponding positions to facilitate their entry.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (12)

1. A high-purity aluminum production system, characterized by: including a refined aluminum tank (1) and control equipment, The refined aluminum tank (1) contains three layers of liquid, and the control equipment is used to control the refined aluminum tank (1) to perform the refining process. The control equipment includes a control unit and a three-layer liquid depth measuring device (2). The control equipment is also used to control the three-layer liquid depth measuring device (2) to measure the respective depths of the three-layer liquids in the refined aluminum tank (1) during the refining process. depth, The three-layer liquid depth measuring device (2) is arranged above the refined aluminum tank (1) and includes a penetration mechanism (21) and a camera mechanism (22); The control unit is electrically connected to the penetration mechanism (21), and is used to control the penetration mechanism (21) to penetrate into the refined aluminum tank (1) and contact the bottom of the refined aluminum tank (1), and then Make it completely move out of the refined aluminum tank (1), so that the probing mechanism (21) adheres to the adherends in the three-layer liquid; The control unit is also electrically connected to the camera mechanism (22), and is used to control the camera mechanism (22) to capture images of the probe mechanism (21) after the probe mechanism (21) moves out of the refined aluminum tank (1), Thereby, the respective depths of the three liquid layers in the refined aluminum tank (1) are obtained through the image. 2. The high-purity aluminum production system according to claim 1, characterized in that: the penetration mechanism (21) is provided with a first position sensor for sensing the position of the penetration mechanism (21), The control unit includes a timing module. When the first position sensor senses that the penetration mechanism (21) is in contact with the bottom of the refined aluminum tank (1), it sends a depth measurement signal to the control unit. The control unit receives After receiving the sounding signal, the timing module starts timing. The control unit controls the penetration mechanism (21) to completely move out of the refined aluminum tank (1) after the timing module reaches the first set time. The first position sensor senses that the penetration mechanism (21) is in the state of completely moving out of the refined aluminum tank. When the slot (1) is in position, a shooting signal is sent to the control unit. After receiving the shooting signal, the control unit controls the camera mechanism (22) to capture the image of the penetration mechanism (21). 3. The high-purity aluminum production system according to claim 1, characterized in that: the penetration mechanism (21) includes a penetration driving part (211) and an insulating rod (212), The penetration driving part (211) is electrically connected to the control unit, and is used to drive the insulating rod (212) to descend and penetrate into the fine aluminum groove (1) and to move upward and out of the fine aluminum groove (1) under the control of the control unit. 4. The high-purity aluminum production system according to claim 3, characterized in that: the three-layer liquid depth measuring device (2) also includes an intensifying screen (23), and the intensifying screen (23) is arranged in a refined aluminum tank. above (1), The control unit controls the penetration driving member (211) to drive the insulating rod (212) to rise and move out of the refined aluminum groove (1), and make the lower part of the insulating rod (212) with adherents adhered to the intensifying screen (212). 23). At this time, the camera mechanism (22) and the intensifying screen (23) are respectively on both sides of the insulating rod (212). The intensifying screen (23) is used to improve the contrast of the image captured by the camera mechanism (22) when it captures the lower part of the insulating rod (212). 5. The high-purity aluminum production system according to claim 1, characterized in that: the control equipment further includes a temperature measuring device (3) and a temperature regulating device, The control equipment is also used to control the temperature measuring device (3) to sense the current temperatures of the three liquid layers in the refined aluminum tank (1) during the refining process; and to control the temperature regulating device to adjust the refined aluminum during the refining process. The temperature of the three layers of liquid in tank (1); The control unit is also electrically connected to the temperature measuring device (3) and the temperature regulating device, and is used to obtain the temperature difference of each of the three layers of liquid according to the respective set temperature of the three layers of liquid and the respective current temperature of the three layers of liquid. The respective temperature differences of the three-layer liquids and the respective depths of the three-layer liquids are used to obtain the respective required temperature adjustment amounts of the three-layer liquids, and then the output of the temperature-regulating device is controlled according to the respective required temperature adjustment amounts of the three-layer liquids. 6. The high-purity aluminum production system according to claim 5, characterized in that: the temperature measuring device (3) is movably connected above the refined aluminum tank (1) in the vertical direction, The control unit is used to drive the detection end of the temperature measuring device (3) to descend into the refined aluminum tank (1), thereby obtaining the current temperatures of the three liquid layers in the refined aluminum tank (1). 7. The high-purity aluminum production system according to claim 1, characterized in that: the control equipment further includes a cathode height control device (4), and the cathode height control device (4) includes a cathode lifting driver (41) and a cathode Rod (42), the bottom end of the cathode rod (42) is immersed in the upper liquid in the refined aluminum tank (1), The control unit includes an acquisition module, which is used to acquire the real-time data of the cathode rod (42) immersed in the upper liquid in the refined aluminum tank (1) at every second set time/when the step of adding aluminum is completed/when the step of extracting aluminum is completed. depth, The control unit is also electrically connected to the cathode lifting driver (41) and is used to determine whether the real-time depth of the cathode rod (42) immersed in the upper liquid is within the set range. If it is not within the set range, control the cathode lifting. The driving member (41) drives the cathode rod (42) up and down to adjust its current height until the real-time depth of the cathode rod (42) immersed in the upper liquid is within the set range. 8. The high-purity aluminum production system according to claim 1, characterized in that: the control unit further includes a timing module, and the control unit is also used to receive the refined aluminum tank (1) during the aluminum adding/extracting operation. Detection trigger signal triggered after operation, And, when the detection trigger signal is received/when the timing module calculates the second set time, it sends a control instruction to the acquisition module to drive it to acquire the real-time time when the cathode rod (41) is immersed in the upper liquid in the refined aluminum tank (1). depth. 9. The high-purity aluminum production system according to claim 7, characterized in that: the control equipment also includes an extreme hydraulic drop measuring device (5) for obtaining the upper liquid and lower liquid in the refined aluminum tank (1) during the refining process. Extreme hydraulic drop between liquids, The polar pressure drop measuring device (5) includes a cathode probe (51), an anode probe (52) and an anode probe driver (53). The cathode probe (51) is electrically connected to the cathode rod (42) to pass through the cathode rod (42). ) is electrically connected to the upper liquid in the refined aluminum tank (1), The anode probe driver (53) is connected to the anode probe (52) and is used to drive the anode probe (52) up and down so that the anode probe (52) contacts the lower liquid in the refined aluminum tank (1). The control unit is also electrically connected to the cathode probe (51) and the anode probe (52) respectively, and is used to obtain the refined aluminum tank (1) when the anode probe (52) contacts the lower liquid in the refined aluminum tank (1). The extreme hydraulic drop between the upper liquid and the lower liquid. 10. The high-purity aluminum production system according to claim 9, characterized in that: the anode probe (52) is provided with a second position sensor for sensing the position of the anode probe (52), When the second position sensor senses that the anode probe (52) is in contact with the lower liquid in the refined aluminum tank (1), it sends a pressure measurement signal to the control unit. After receiving the pressure measurement signal, the control unit measures the precision aluminum tank ( 1) The extreme hydraulic drop between the upper liquid and the lower liquid, After the measurement is completed, the control unit controls the anode probe driver (53) to drive the anode probe (52) to rise. When the second position sensor senses that the anode probe (52) is in the reset position, it sends a reset signal to the control unit to control The unit controls the anode probe driver (53) to stop driving. 11. The high-purity aluminum production system according to claim 1, characterized in that: the refined aluminum tank (1) includes a tank body (11), a cover door (12) and an opening and closing driving member (13), The three-layer liquid is placed in the tank (11), and a feeding port (111) is provided at the upper part of the tank (11) for feeding raw aluminum into the tank (11). The driving end of the opening and closing driving part (13) is connected to the cover door (12), and the control unit is electrically connected to the opening and closing driving part (13), and is used to control the opening and closing driving part (13) to drive the cover door (12). Close the feeding port (111) and open the feeding port (111). 12. The high-purity aluminum production system according to claim 11, characterized in that: the control device further includes a transportation unit, The control unit is electrically connected to the transport unit, and is used to compare the actual depth of the lower liquid with the lower liquid setting after obtaining the respective depths of the three liquid layers in the refined aluminum tank (1) through the three-layer liquid depth measuring device (2). depth, and when the depth of the lower layer liquid is lower than the set depth, the transport unit is controlled to transport the raw aluminum to the feeding port (111), The transport unit is provided with a position sensor, and a sensing point is provided at the feeding port (111). When the position sensor senses the sensing point, it sends an aluminum addition signal to the control unit. After receiving the aluminum addition signal, the control unit The first control signal is sent to control the opening and closing driver (13) to drive the cover door (12) to open the feeding port (111), The control unit also includes a timing module for starting timing when the first control signal is sent, and after the timing reaches the feeding time, sending a second control signal to control the opening and closing driving member (13) to drive the cover door (12) Close the feeding port (111).