Plate Pitch Conversion Device

Abstract

The present invention provides a plate pitch conversion device, comprising a first and a second conveying chain with a consistent conveying direction, the first conveying chain comprising two rows of first unit chains spaced apart and arranged in parallel, the second conveying chain comprising second unit chains spaced apart and arranged in parallel, the first and the second unit chains are respectively provided with first and second limiting cams, the first and the second unit chains are wound around their respective master and slave sprockets, the first and the second conveying chains are connected and arranged, and the conversion of the plate is completed at the connection, and the pole pitch of the plate before and after the conversion is changed to meet the requirements of the corresponding process, the present invention has a simple structure, stable and reliable operation, especially significantly improves the conversion efficiency, completely liberates a large number of human resources, and avoids various potential accidents in the operation process; the completion of the pole pitch size expansion and contraction conversion provides great convenience for the large-scale centralized transportation of the plate between the PC electrolysis unit and the electrolytic liquid purification system.

Description

Technical Field

[0001] The present invention relates to a copper electrolytic production system. Background Art

[0002] At present, the main copper electrolytic refining processes can be divided into permanent stainless steel cathode method and traditional large plate long cycle conventional electrolysis method. Permanent stainless steel cathode electrolysis method, referred to as PC electrolysis, is a modern electrolysis process using permanent stainless steel cathode. Compared with traditional electrolysis method, PC electrolysis technology has the advantages of advanced process technology indicators, high product quality, high labor productivity, and low production cost, and is widely used in modern copper refining plants.

[0003] The entire production process of PC electrolysis (permanent cathode) is basically mechanically automated, and the cathode plate is made of recyclable permanent stainless steel plate. The main production process of PC: First, the anode unit processes, shapes, screens, trims and cleans the anode plate to obtain a usable anode plate + the usable stainless steel cathode plate obtained after screening from the stripping unit → fully automatic crane hoist plate loading slot → power on for a cycle of electrolysis to obtain electric copper → crane hoist to the stripping unit for cleaning, stripping, and packaging to obtain high-purity cathode copper products and send them to the warehouse for sale. The pole distance of PC electrolysis production is 100mm, and the crane, stripping unit, etc. have transfer equipment with matching pole distance.

[0004] The difference between the pole pitch of PC electrolytic production and that of electrolytic copper production is 105mm. As a result, when the whole tank of electrolytic copper is to be stripped, the pole pitch must be adjusted and calibrated manually, and the 105mm spacing must be reduced to 100mm spacing to meet the needs of the special crane of the PC electrolytic production system and the stripping operation of the PC unit. At the same time, the cathode plate after copper stripping is adjusted and calibrated to a pole pitch of 105mm through manual expansion, and is hoisted to the clean liquid tank for production by the special hoist of the electrolytic tank of the clean liquid system. This greatly increases the workload and labor intensity of the operators in adjusting the pole pitch of electrolytic copper. At the same time, due to many factors such as the poor crystallization of electrolytic copper compared to cathode copper, copper falling failures are very likely to occur during the adjustment process, posing a great safety hazard to operators and equipment.

[0005] In order to ensure copper electrolytic production, the electrolyte composition must meet the requirements of electrolytic production, and part of the electrolyte must be drawn out regularly for liquid purification, copper removal and impurity removal. Jinguan Company's prior application, entitled "Electrolytic Copper Production System" (application number CN201620728422.5), disclosed relevant technical content, which involved a copper electrolyte electrolytic purification system, which not only solved the electrolyte purification problem but also harvested electrolytic copper.

[0006] In actual production, the tail plate or residual electrode after PC electrolysis production, that is, the remaining part of the anode plate in PC electrolysis production, is used as the cathode in the liquid purification process for secondary impurity removal production. In the specific transportation process, the residual electrode after PC electrolysis production is first packaged by the residual electrode unit and then transported to the liquid purification process. The packaging will inevitably lead to serious deformation of the residual electrode. The secondary electrolysis tank needs to correct the deformed residual electrode piece by piece and arrange it according to the 105mm pole pitch to meet the electrolysis production conditions. This requires a lot of manpower to calibrate the tail plate, and there are also great safety hazards.

[0007] It can be seen that whether it is the copper stripping operation of electrolytic copper or the reuse of the tail plate as a cathode in the copper electrolyte electrolytic purification system, the production efficiency is severely limited due to the difference between the pole distance of 100mm in PC electrolytic production and the pole distance of 105mm in electrolytic copper production. This is directly related to the lack of effective conversion means for the difference in pole distance.

[0008] The utility model patent document entitled “A pole plate stepping conveying mechanism” (document number CN 206750794 U) discloses the following technical content: “

[0041] Taking the A column system as an example, a crane lifts a pole plate (57 plates, with a pole plate spacing of 180 mm) and places it on the chain conveyor 11 of the stripping unit 1 as the beginning of a working cycle. The chain conveyor 11 conveys the pole plate to the zinc stripping unit 14. At the junction with the stepping conveying mechanism 12, the cylinder 123 of the stepping conveying mechanism 12 drives the connecting rod mechanism 124 to drive the movable pole plate frame 122 to perform a stepping action. During the process, the left tooth groove of the movable pole plate frame 122 hooks the chain conveyor 11. 1, and then the active plate frame 122 returns to its original position, and the plate automatically falls into the flush grooves of the fixed plate frame 121 and the active plate frame 122, and then the active plate frame 122 steps again to receive the second cathode plate, and at the same time the first cathode plate steps forward to the next flush groove of the fixed plate frame 121 and the active plate frame 122, at which time the spacing between the two cathode plates is the spacing between the grooves on the stepping transmission mechanism, that is, the expansion of the plate spacing (360mm) is automatically completed. "It can be seen that there are also technical problems in the prior art involving the change of the plate spacing. There are two main problems with this technical solution. First, a crane is used to lift a pole plate (57 plates, with a pole plate spacing of 180 mm) and place it on the chain conveyor 11 of the stripping unit 1. The cylinder 123 of the stepping transmission mechanism 12 drives the connecting rod mechanism 124 to drive the movable pole plate frame 122 to perform a stepping motion. Since the connection relationship between the cylinder 123, the connecting rod mechanism 124 and the movable pole plate frame 122 is not recorded, it is impossible to know the movement trajectory of the movable pole plate frame 122, and of course it is impossible to know how the pole plates are transferred at the connection between the movable pole plate frame 122 and the chain conveyor 11; secondly, since the movement trajectory of the movable pole plate frame 122 is unknown, it is naturally impossible to know how the pole plates are transferred between the movable pole plate frame 122 and the fixed pole plate frame 121. Summary of the invention

[0009] The purpose of the present invention is to provide a pole plate pitch conversion device, which realizes pole plate handover at the connection point of two rows of conveyor chains and obtains pole plate arrangement and conveying with different pole pitches.

[0010] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pole plate pitch conversion device, characterized in that: it includes a first and a second conveying chain with a consistent conveying direction, the first conveying chain includes two rows of first unit chains spaced apart and arranged in parallel, the second conveying chain includes second unit chains spaced apart and arranged in parallel, the first and the second unit chains are respectively provided with first and second limiting cams on their chain bodies, the first and the second unit chains are wound around their respective master and slave sprockets, the first and the second limiting cams on the upper chain segments are in an upwardly protruding state, the first limiting cams on the same first unit chain are equidistantly arranged and the first limiting cams on the two rows of first unit chains are arranged in the same position in the conveying direction, the second limiting cams on the same second unit chain are equidistantly arranged and the second limiting cams on the two rows of second unit chains are arranged in the same position in the conveying direction The limiting cams are arranged in the same position in the conveying direction, the spacing between two adjacent first limiting cams is different from the spacing between two adjacent second limiting cams, the sprocket cores at the connection between the first and second conveying chains are parallel and closely arranged, the first supporting part of the lifting ear on the first conveying chain is the angular area of ​​the first unit chain and the first limiting cam facing the downstream side of the retaining edge clamp, the second supporting part of the lifting ear on the second conveying chain is the angular area of ​​the second unit chain and the second limiting cam facing the downstream side of the retaining edge clamp, when the second supporting part at the transfer position is displaced, it first displaces from the bottom of the first supporting part to overlap with the first supporting part and continues to lift the lifting ear upward from the first supporting part, the second supporting part supports the lifting ear from above the first limiting cam at the most downstream end and conveys it to the downstream side of the second conveying chain.

[0011] The above scheme is to connect and arrange the first and second conveyor chains and complete the conversion of the plates at the connection point, and change the pole pitch of the plates before and after the conversion to meet the requirements of the corresponding process. The present invention has a simple structure, stable and reliable operation, and especially significantly improves the conversion efficiency, which completely liberates a large amount of human resources and avoids various potential accidents in the operation process; completing the conversion of pole pitch size expansion and contraction provides great convenience for the large-scale centralized transportation of plates between the PC electrolysis unit and the electrolytic liquid purification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 , 2 They are respectively a stereoscopic view and a side view of the present invention;

[0013] Figure 3 , 4 They are Figure 1 , 2 A partial enlarged schematic diagram. DETAILED DESCRIPTION

[0014] A pole plate pitch conversion device comprises a first conveying chain 10 and a second conveying chain 20 with a consistent conveying direction, wherein the first conveying chain 10 comprises two rows of first unit chains 11 arranged in parallel at a certain interval, and the second conveying chain 20 comprises two rows of second unit chains 21 arranged in parallel at a certain interval, and the first and second unit chains 11 and 21 are respectively provided with first and second limiting convex blocks 12 and 22 on the chain bodies, and the first and second unit chains 11 and 21 are wound around their respective master and slave sprockets, and the first and second limiting convex blocks 12 and 22 on the upper chain segments are in an upwardly protruding state, the first limiting convex blocks 12 on the same first unit chain 11 are arranged at equal intervals, and the first limiting convex blocks 12 on the two rows of the first unit chains 11 are arranged in the same position in the conveying direction, the second limiting convex blocks 22 on the same second unit chain 21 are arranged at equal intervals, and the second limiting convex blocks 22 on the two rows of the second unit chains 21 are arranged in the same position in the conveying direction, and the spacing between two adjacent first limiting convex blocks 12 is equal to the spacing between two adjacent second limiting convex blocks 12. The spacing between the stops 22 is different. The sprocket cores at the connection between the first and second conveyor chains 10 and 20 are parallel and closely arranged. The first supporting portion 13 of the lifting ear 2 on the first conveyor chain 10 is an angular area of ​​the first unit chain 11 and the first limiting convex stop 12 facing the downstream side of the retaining edge clamp. The second supporting portion 23 of the lifting ear 2 on the second conveyor chain 20 is an angular area of ​​the second unit chain 21 and the second limiting convex stop 22 facing the downstream side of the retaining edge clamp. The second supporting portion 23 at the transfer position When the support part 23 is displaced, it first displaces from below the first supporting part 13 to overlap with the first supporting part 13 and continues to lift the lifting ear 2 upward and away from the first supporting part 13. The second supporting part 23 supports the lifting ear 2 to bypass the first limiting cam 12 at the downstream end and convey it to the downstream side of the second conveying chain 20. The sprockets at both ends of the upper horizontal section of the first and second unit chains 11 and 21 are connected to the suspension section of the wheel axle, and the supporting fixed end of the wheel axle is located on the outside of the first and second unit chains 11 and 21.

[0015] In the above technical solution, the transfer and handover of the electrode plate 1 is realized at the connection position, and the second supporting part 23 can lift the ear 2 of the electrode plate 1 originally supported by the first supporting part 13 and leave the first supporting part 13. As the second unit chain 21 continues to move, during the displacement of the ear 2, it is always in a path to avoid the first unit chain 11 and the first limiting convex stop 12 at the front end thereof, that is, the first limiting convex stop 12 at the downstream side of the ear 2 at the downstream end of the first unit chain 11 shown in the figure. In this way, the electrode plate 1 is transferred from the first unit chain 11 to the second conveying chain 20, and due to Limited by the separation of the second limiting cam 22, the pole pitch of the electrode plate 1 on the second conveying chain 20 is different from the pole pitch of the electrode plate 1 on the first conveying chain 10, ensuring the realization of the purpose of pole pitch expansion and contraction; the sprockets at both ends of the upper horizontal section of the first and second unit chains 11, 21 are connected to the suspension section of the axle, and the supporting fixed end of the axle is located on the outside of the first and second unit chains 11, 21, so as to ensure that there is a smooth area between the two first unit chains 11 constituting the first conveying chain 10 and between the two second unit chains 21 constituting the second conveying chain 20, so as to ensure that the electrode plate 1 can be accommodated and the smooth movement of the electrode plate 1 can be ensured.

[0016] A more preferred solution is that the first sprocket 14 meshed with the first unit chain 11 at the junction is arranged coaxially with the second sprocket 24 meshed with the second unit chain 21, and the first sprocket 14 and the second sprocket 24 rotate relative to each other. This constitutes the most tight or compact connection, and the structure is also very simple, that is, one wheel axle can support the first sprocket 14 and the second sprocket 24 at the same time, which naturally reduces the difficulty of arranging the sprockets. In specific implementation, there are several specific ways for the first sprocket 14 and the second sprocket 24 to rotate relative to each other. It can be considered to set the second sprocket 24 to rotate when the first sprocket 14 is stationary, or the first sprocket 14 rotates at a low speed and the second sprocket 24 rotates at a high speed. The above two speed adaptation schemes can realize the pole plate 1 from the first conveyor chain 10 to the second conveyor chain 20 to realize the expansion and contraction of the pole pitch. The phenomenon of the pole plates arriving at the junction being concentrated against each other occurs.

[0017] In conjunction with the accompanying drawings, as a preferred solution, the first sprocket 14 is located outside the second sprocket 24 and the two are rotatably connected to the connecting wheel shaft 30, and the connecting wheel shaft 30 supports the fixed end located outside the first unit chain 11. The advantage of this solution is that it takes into account the overall consideration of setting the disk 241, the swing rod 60 and the sensor 70 in the following preferred solution.

[0018] The inner side of the second sprocket 24 is provided with a disk 241, and the chain body of the second unit chain 21 within the coverage angle range coincides with the edge of the disk 241 or is located in the edge area of ​​the disk 241 and near the edge, and the tooth top of the gear teeth of the second sprocket 24 is located in the edge area of ​​the disk 241. The purpose of providing the disk 241 is to allow the lug 2 of the pole plate 1 to slide onto the disk edge of the disk 241 when the second limit convex stop 22 moves the lug 2 of the pole plate 1, so as to prevent the pole plate 1 from impacting the gear teeth of the second sprocket 24 and the chain body of the second unit chain 21, so as to prevent them from being deformed and damaged, thereby increasing the service life of the chain and the sprocket.

[0019] The top of the first limiting convex stop 12 on the first unit chain 11 closest to the wheel core of the first sprocket 14 is located within or flush with the edge of the disc 241. This ensures that the ear 2 of the pole plate 1 is limited by the second limiting convex stop 22 and the disc 241, and avoids interference from the first limiting convex stop 12 closest to the wheel core of the first sprocket 14 when it is dragged and displaced. Figure 3 , 4 As shown, the first limit cam 12 closest to the wheel core of the first sprocket 14 is marked as 12a, and the pole plate 1 located on the disc 241 has just been transferred from the first limit cam 12 marked as 12b. The ear 2 of the pole plate 1 is in the avoidance position with the first limit cam 12 marked as 12a during the transportation process, and then the first sprocket 14 rotates and the first unit chain 11 moves downstream by the distance of the first limit cam 12, that is, 12c arrives at the position of 12b, and 12b arrives at the position of 12a, so that the pole plates 1 are transported one by one and transferred one by one with variable pitch.

[0020] As shown in the figure, there are supporting platforms 40 and 50 under the chain bodies of the first and second unit chains 11 and 21, respectively. The supporting platforms 40 and 50 are provided to ensure that the chain segments receiving the electrode plate 1 are level, and the weight of the electrode plate 1 is borne by the supporting platforms 40 and 50, so as to avoid the sprocket shaft from being subjected to excessive bending moment operation, and to avoid the position and posture of the electrode plate 1 on the first and second conveying chains 10 and 20 being stable.

[0021] A swing arm 60 is provided at the connection between the first and second conveying chains 10 and 20. The upper end of the swing arm 60 is hinged and the hinge shaft 61 is located in the horizontal direction perpendicular to the conveying direction. The lower end of the swing arm 60 is located on the moving path of the lifting ear 2 of the electrode plate 1. A sensor 70 is provided within the swinging range of the swing arm 60. Specifically, position sensors 70 can be provided at both boundary ends, or one can be provided at a selected location. The purpose of providing the sensor 70 is to collect the position of the electrode plate 1 to determine whether to start the first conveying chain 10 or the second conveying chain 20. In the example, the intermittent motion of the first conveying chain 10 and the second conveying chain 20 can be selected to perform the transfer operation, that is, when the second conveying chain 20 transports the newly transferred electrode 1 downstream, the lifting ear 2 first contacts and pushes the swing arm 60 from the low position to the upper left. Figure 4The swing arm 60 rotates clockwise in the state shown, and when it reaches the high position, it separates from the lifting eye 2 which continues to run, and the swing arm 60 swings counterclockwise back to the low position. The sensor 70 collects the return signal and outputs it to the controller. The controller outputs a control signal to shut down the second conveying chain 20, and at the same time starts the first conveying chain 10 to convey the next pole plate 1 to the transfer connection position.

[0022] Figure 3 , 4 In the given example, the spacing between two adjacent second limiting convex stops 22 on the second unit chain 21 is greater than the spacing between two adjacent first limiting convex stops 12 on the first unit chain 11. In the example shown in the attached figure, the spacing between two adjacent second limiting convex stops 22 is greater than the spacing between two adjacent first limiting convex stops 12. This scheme realizes a scheme of expanding the pole pitch, and similarly, a switching operation of reducing the pole pitch can be realized.

[0023] The pole plate pitch conversion device provided by the present invention realizes the pole plate arrangement of pole pitch expansion and contraction conversion, and can conveniently realize the conversion of 100mm and 105mm pole pitches as needed. When the residual pole is converted from 100mm to 105mm pole pitch, it is transported to the clean liquid for secondary electrowinning operation using a special hoist that meets the pole pitch of the clean liquid process, which completely omits a large amount of labor such as packing, transportation, and repair of the residual pole, greatly reduces labor costs, and improves production efficiency. In addition, by using a special hoist that meets the pole pitch of 105mm to transport to the equipment of the present invention, the pole pitch of 105mm and the pole pitch of 105mm electrowinning copper can be converted to an arrangement of 100mm pole pitch so that the PC electrolysis unit can implement the stripping operation, without the need to invest heavily in purchasing a separate feasible stripping unit for electrowinning copper.

Claims

1. A pole plate pitch conversion device, characterized in that: The invention comprises a first conveying chain (10, 20) and a second conveying chain (10, 20) with the same conveying direction. The first conveying chain (10) comprises two rows of first unit chains (11) arranged in parallel at a distance from each other. The second conveying chain (20) comprises second unit chains (21) arranged in parallel at a distance from each other. The first and second unit chains (11, 21) are respectively provided with first and second limiting convex blocks (12, 22). The first and second unit chains (11, 21) are wound around their respective master and slave sprockets. The first and second limiting convex blocks (12, 22) on the upper chain segments are in an upwardly protruding state. The first unit chains (11) are provided with a plurality of first and second limiting convex blocks (12, 22). ) are arranged at equal intervals and the first limiting convex blocks (12) on the two rows of first unit chains (11) are arranged at the same position in the conveying direction, the second limiting convex blocks (22) on the same second unit chain (21) are arranged at equal intervals and the second limiting convex blocks (22) on the two rows of second unit chains (21) are arranged at the same position in the conveying direction, the spacing between two adjacent first limiting convex blocks (12) is different from the spacing between two adjacent second limiting convex blocks (22), the sprocket cores at the connection between the first and second conveying chains (10, 20) are arranged in parallel and closely, and the first The first supporting portion (13) of the lifting lug (2) on the conveying chain (10) is an angular region of the first unit chain (11) and the first limit convex stop (12) facing the downstream side of the retaining edge clamp, and the second supporting portion (23) of the lifting lug (2) on the second conveying chain (20) is an angular region of the second unit chain (21) and the second limit convex stop (22) facing the downstream side of the retaining edge clamp, and when the second supporting portion (23) at the transfer position is displaced, it first displaces from below the first supporting portion (13) to overlap with the first supporting portion (13) and continues to lift the lifting lug (2) upwards and away from the first supporting portion (13). ), the second supporting portion (23) supports the lifting ear (2) to pass over the first limiting convex stop (12) at the most downstream end and convey it to the downstream side of the second conveying chain (20), the sprockets at both ends of the upper horizontal sections of the first and second unit chains (11, 21) are connected to the suspension section of the wheel axle, and the supporting fixed end of the wheel axle is located on the outside of the first and second unit chains (11, 21); the first sprocket (14) meshed with the first unit chain (11) and the second sprocket (24) meshed with the second unit chain (21) at the connection are arranged coaxially, and the first sprocket (14) and the second sprocket (24) rotate relative to each other.

2. The pole plate pitch conversion device according to claim 1, characterized in that: The first sprocket (14) is located outside the second sprocket (24) and the two are rotatably connected to a connecting wheel shaft (30), and the supporting fixed end of the connecting wheel shaft (30) is located outside the first unit chain (11).

3. The pole plate pitch conversion device according to claim 1, characterized in that: A circular disk (241) is provided on the inner side of the second sprocket (24); the chain body of the second unit chain (21) within the coverage angle range coincides with the edge of the circular disk (241) or is located in the edge region of the circular disk (241) and close to the edge; and the tooth tops of the second sprocket (24) are located in the edge region of the circular disk (241).

4. The pole plate pitch conversion device according to claim 3, characterized in that: The top of the second limiting protrusion (22) on the first unit chain (11) closest to the wheel core of the first sprocket (14) is located inside the edge of the disc (241) or flush with it.

5. The pole plate pitch conversion device according to claim 3, characterized in that: The first and second unit chains (11, 21) are each provided with a support platform (40, 50) below the chain body.

6. The pole plate pitch conversion device according to claim 3, characterized in that: A swing rod (60) is provided at the connection point between the first and second conveying chains (10, 20); the upper end of the swing rod (60) is hinged and the hinge axis (61) is located in a horizontal direction perpendicular to the conveying direction; the lower end of the swing rod (60) is located on the moving path of the hanging ear (2) of the pole plate (1); and a sensor (70) is provided within the swing range of the swing rod (60).

7. The pole plate pitch conversion device according to claim 3, characterized in that: The distance between two adjacent second limit convex stops (22) on the second unit chain (21) is greater than the distance between two adjacent first limit convex stops (12) on the first unit chain (11).

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