Electrochemical lithium extraction polar plate drying equipment

Abstract

The utility model discloses electrochemical lithium extraction polar plate drying equipment which effectively solves the problems that existing drying equipment is unreasonable in structure, poor in drying efficiency and the like. Comprising a shell and a sealing door arranged at the front end of the shell, a plurality of air inlet pipes distributed at equal intervals are fixed to the right side of the top of the shell, the air inlet pipes are externally connected with air supply equipment, a plurality of air return pipes distributed at equal intervals are fixed to the left side of the top of the shell, and a plurality of transverse pipes matched with the air inlet pipes are fixed in the shell; the right sides of the transverse pipes communicate with the corresponding air inlet pipes, a partition plate is fixed in the shell, and a drying chamber is formed in the shell. The polar plate drying device is ingenious in structure and convenient to use, through the arrangement of the air inlet pipe, the air return pipe, the transverse pipe and the like, compared with a structure similar to a drying box in the market, large polar plates can be dried in the mode, a worker only needs to push a containing frame on which a plurality of polar plates are hung into a drying chamber, operation is convenient, and the universality of the device is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium extraction equipment, in particular to electrochemical lithium extraction plate drying equipment. Background Art

[0002] Lithium extraction from salt lakes refers to a technical process of extracting lithium resources from lithium-rich salt lakes. Salt lakes usually contain high concentrations of salt and a variety of minerals including potassium, sodium, magnesium, lithium, and boron. Lithium ions in brine are extracted onto the plates through electrochemical methods, and the plates need to be dried later.

[0003] The Chinese patent with application number CN202221574307.9 discloses a plate drying device for lithium battery manufacturing, including a mounting plate and two sliding plates, the output end of the servo motor is fixedly connected with a fan blade, the top of the fan blade is fixedly connected with a sleeve disk, the surface of the sleeve disk is slidably sleeved with a sliding rod, the inner wall of the mounting plate is fixedly connected with a fixed cover, the opposite ends of the two sliding plates are fixedly connected with a sealing gasket, the surfaces of the two sliding plates are symmetrically fixedly connected with springs, the tops of the two sliding plates are fixedly connected with an arc plate, and the surface of the mounting plate is fixedly connected with an exhaust pipe. The utility model relates to the field of lithium battery technology. The plate drying device for lithium battery manufacturing solves the problem that after drying, due to the high temperature inside the drying box at this time, at the moment of opening the drying box, due to the large temperature difference between the inside and the outside, hot air mist will be generated, which may cause the mist to stick to the plate. Although the mist can be dried quickly, it may affect the later use effect of the plate.

[0004] The existing drying equipment for plates still has the following problems:

[0005] 1. Some drying equipment requires the plates to be placed on a drawer-like placement board. This type of equipment is more suitable for small plates. When the equipment is scaled up, it is not easy to use and cannot achieve the desired effect.

[0006] 2. The hot air flow inside the drying chamber of some drying equipment is basically blown from one side to the other side, which not only causes the plate to have dead corners in drying, but also the effect is not optimal. Utility Model Content

[0007] In view of the above problems, the present invention provides an electrochemical lithium extraction plate drying device, which has the advantages of good drying effect and strong equipment versatility.

[0008] The technical solution is as follows: the utility model comprises a shell and a sealing door arranged at the front end of the shell, a plurality of air inlet ducts distributed at equal intervals are fixed on the right side of the top of the shell, the air inlet ducts are externally connected to an air supply device, a plurality of return air ducts distributed at equal intervals are fixed on the left side of the top of the shell, a plurality of transverse tubes matching the air inlet ducts are fixed in the shell, the right sides of the plurality of transverse tubes are connected with the corresponding air inlet ducts, a partition is fixed in the shell and a drying chamber is formed, filter holes are provided on the left and right sides of the partition, an air inlet channel is formed between the partition and the inner wall of the left shell, a heating coil is arranged in the air inlet channel, the left side of the transverse tube is connected with the air inlet channel, the partition and the inner wall of the right shell form a return air channel, the return air duct is connected with the return air channel, and a pressure sensor and a temperature sensor are arranged in the drying chamber;

[0009] The cam is provided with a plurality of camshafts, each of which has a plurality of camshafts, each of which has a plurality of camshafts, each of which has a plurality of camshafts, each of which has a plurality of camshafts, each of which has a plurality of camshafts.

[0010] Preferably, a rotating shaft passing through the shell is respectively provided in the plurality of transverse tubes, a guide blade located in the transverse tube is coaxially fixed on the rotating shaft, a transmission motor is fixed on one end of the rotating shaft passing through the outside of the shell, a control box is provided on the shell, the control box is electrically connected to the plurality of transmission motors by signals, and the control box is electrically connected to the servo motor by signals.

[0011] Preferably, two symmetrically distributed limiting rails are provided at the bottom of the drying chamber.

[0012] Preferably, a plurality of limiting grooves are formed on the partition plate and are located below the connecting pins. A limiting block is fixed on one side of the stopper, and the limiting block slides inside the limiting groove.

[0013] Preferably, the outer walls of the air inlet duct and the air return duct are wrapped with heat-insulating tin foil.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Through the settings of air inlet duct, return air duct and transverse duct, workers place the plates on the plate placement rack before drying. The air supply equipment sends the drying gas into the drying room through the air inlet duct, transverse duct and air inlet channel. After the drying gas is heated by the heating coil, the temperature reaches the applicable range. The drying gas passes through the drying room and the partition on the right to enter the return air channel. It is sent out by the return air duct under the action of the vacuum pump. Compared with similar drying box structures on the market, this method can be used to dry larger plates. Workers only need to push the placement rack with multiple plates mounted on it into the drying room. It is easy to operate and the equipment is more universal.

[0016] 2. Through the settings of connecting pins, baffles and connecting rods, when the baffle is in the initial state, the filter holes on the right side of the partition are completely blocked. At this time, after the drying gas enters the drying chamber, it stays inside the drying chamber for about 1-3 minutes. The servo motor starts to drive the connecting rod to rotate, and the block moves back and forth within the stroke of the reciprocating thread. During the movement of the block, the block will squeeze the connecting pin to move. At this time, the block slowly expands, and the drying gas accumulated in the drying chamber quickly enters the return air duct through the filter holes, thereby achieving the effect of gas turbulence in the drying chamber, making the high-temperature gas in the drying chamber stay longer, the gas diffusion is wider, and the drying efficiency of the drying equipment is improved. At the same time, it also avoids the situation where the servo motor is constantly started and stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Figure 3 It is a schematic diagram of the cooperation between the baffle and the partition in the utility model.

[0020] Figure 4 It is a development diagram of the cooperation between the connecting pin and the sliding groove in the utility model.

[0021] Figure 5 It is a schematic diagram of the connecting rod and the connecting piece in the utility model.

[0022] Explanation of the symbols in the schematic diagram:

[0023] 1. Shell; 2. Sealing door; 3. Air inlet duct; 4. Return air duct; 5. Horizontal duct; 6. Partition; 7. Drying chamber; 8. Control box; 9. Air inlet channel; 10. Heating coil; 11. Return air channel; 12. Baffle; 13. Slide; 14. Connecting pin; 15. Connecting groove; 16. Connecting shaft; 17. Connecting rod; 18. Sliding block; 19. Connecting plate; 20. Block; 21. Guide rod; 22. Guide fan blade; 23. Transmission motor; 24. Limit rail; 25. Limit groove; 26. Limit block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Depend on Figures 1 to 5A drying machine is provided, comprising a shell 1 and a sealing door 2 arranged at the front end of the shell 1. A plurality of air inlet pipes 3 distributed at equal intervals are fixed on the right side of the top of the shell 1. The air inlet pipe 3 is externally connected to an air supply device, and the air supply device is a fan. The fan is a prior art and will not be described in detail here. A plurality of return air pipes 4 distributed at equal intervals are fixed on the left side of the top of the shell 1. The return air pipe 4 is externally connected to an exhaust pump to extract the hot air inside the drying chamber 7 to form a drying cycle. A plurality of transverse pipes 5 matching the air inlet pipes 3 are fixed in the shell 1. The right sides of the plurality of transverse pipes 5 are connected to the corresponding air inlet pipes 3. A partition 6 is fixed in the shell 1 and A drying chamber 7 is formed, filter holes are provided on the left and right sides of the partition 6, an air inlet channel 9 is formed between the partition 6 and the inner wall of the left shell 1, a heating coil 10 is arranged in the air inlet channel 9, the heating coil 10 is externally connected to a heating device, similar to the heating method of a heater, the heating coil 10 and the heating device are both prior art, and no further details are given here, the left side of the transverse pipe 5 is connected to the air inlet channel 9, the partition 6 and the inner wall of the right shell 1 are connected to a return air channel 11, the return air duct 4 is connected to the return air channel 11, a pressure sensor and a temperature sensor are arranged in the drying chamber 7, the pressure sensor It is used to detect the gas pressure inside the drying chamber 7. When the gas pressure inside the drying chamber 7 is too high, the user can see the overpressure signal through the control box 8. The temperature sensor is used to detect the drying temperature inside the drying chamber 7. When the temperature is too high or too low, it is necessary to adaptively adjust the temperature of the heating coil 10. Through the settings of the air inlet duct 3, the return air duct 4 and the cross pipe 5, the workers place the plates on the plate placement rack before drying. They only need to keep the plates in a vertical state. Rollers are set at the four corners of the bottom of the placement rack to facilitate the placement rack to be pushed into the drying chamber 7. One drying chamber 7 can accommodate multiple placement racks. The rack enters, and when all the racks are placed, drying begins. The air supply equipment sends the drying gas into the drying chamber 7 through the air inlet pipe 3, the cross pipe 5 and the air inlet channel 9. After the drying gas is heated by the heating coil 10, the temperature reaches the applicable range. The drying gas passes through the drying chamber 7 and the partition 6 on the right to enter the return air channel 11. Under the action of the vacuum pump, it is sent out by the return air pipe 4. Compared with the structure of similar drying boxes on the market, this method can be used to dry larger plates. Workers only need to push the racks with multiple plates mounted on them into the drying chamber 7. It is easy to operate and the equipment is more universal.

[0026] Considering that when the drying gas enters the drying chamber 7, it will be sent out from the return air channel 11 and the return air duct 4 after passing through the electrode plate and the placement rack. The drying effect cannot reach the best, and there are easy to be drying dead corners. A plurality of baffles 12 arranged up and down are rotatably connected to the right side wall of the partition 6. The baffle 12 at least blocks more than two rows of filter holes. The inner side of the baffle 12 is provided with two symmetrically distributed slide grooves 13. A connecting pin 14 penetrating the partition 6 is arranged in the slide groove 13. The connecting pin 14 slides up and down in the slide groove 13. A connecting groove 15 is provided in the slide groove 13. A connecting shaft 16 penetrating the connecting pin 14 is arranged in the connecting groove 15. The connecting pin 14 and the slide groove 13 not only have a sliding relationship, but also rotate in the slide groove 13. The front and rear end surfaces of the connecting pin 14 away from the slide groove 13 are both arc surfaces. A plurality of connecting rods 17 arranged equidistantly up and down are arranged in the return air channel 11. The number of the plurality of connecting rods 17 matches the baffle 12. The connecting rod 17 is provided with two sections of reciprocating threads corresponding to the connecting pin 14. The connecting pin 14 is located in the middle of the reciprocating thread. A servo motor is fixed at one end of one of the connecting rods 17 that passes through the outer side of the shell 1. The servo motor can adjust the speed according to the use requirements. The plurality of connecting rods 17 are connected in pairs through a belt transmission structure. A slider 18 is slidably connected to the connecting rod 17. A bayonet engaged with the reciprocating thread is arranged in the slider 18. When the connecting rod 17 rotates, the reciprocating thread squeezes the bayonet to move. The slider 1 8 is fixed with a connecting plate 19, and a stopper 20 is fixed at one end of the connecting plate 19 away from the slider 18, and both sides of the stopper 20 are arranged with arc surfaces. When the stopper 20 contacts the connecting pin 14, as the stopper 20 continues to move, the connecting pin 14 is squeezed by the stopper 20 and translates to one side of the inside of the drying chamber 7. A guide rod 21 penetrating the partition 6 is fixed on the top of the connecting pin 14, and the guide rod 21 is connected to the partition 6 by a spring. When the stopper 20 is out of contact with the connecting pin 14, the connecting pin 14 is reset under the action of the spring. A plurality of limiting grooves 25 located below the connecting pin 14 are provided on the partition 6, and a limiting block 26 is fixed on one side of the stopper 20, and the limiting block 26 slides inside the limiting groove 25 to limit the card The movement direction of the block is limited by the limit groove 25, and the block 20 can move in a straight line. Through the settings of the connecting pin 14, the baffle 12 and the connecting rod 17, when the baffle 12 is in the initial state, the filter holes on the right side of the partition 6 are completely blocked. At this time, after the drying gas enters the drying chamber 7, it stays in the drying chamber 7 for about 1-3 minutes. The servo motor starts to drive the connecting rod 17 to rotate, and the block 20 moves back and forth within the stroke of the reciprocating thread. During the movement of the block 20, the block 20 will squeeze the connecting pin 14 to move. At this time, the block 20 slowly unfolds, and the drying gas accumulated in the drying chamber 7 quickly enters the return air channel 11 through the filter holes. When the block 20 is out of contact with the connecting pin 14, the connecting pin 14 is reset under the action of the spring.In this way, the gas turbulence inside the drying chamber 7 is achieved, so that the high-temperature gas inside the drying chamber 7 stays longer, the gas diffusion is wider, the drying efficiency of the drying equipment is improved, and the servo motor is prevented from constantly starting and stopping.

[0027] refer to Figure 1 and Figure 2 As shown, in order to enhance the gas circulation inside the transverse tube 5 and enable the gas in the air inlet pipe 3 to enter the air inlet channel 9 faster, a plurality of the transverse tubes 5 are respectively provided with a rotating shaft passing through the shell 1, and a guide fan blade 22 located in the transverse tube 5 is coaxially fixed on the rotating shaft, and a transmission motor 23 is fixed on one end of the rotating shaft that passes through the outside of the shell 1, a control box 8 is provided on the shell 1, and a control module is provided in the control box 8, the control box 8 is electrically connected to the plurality of transmission motors 23 by signals, and the control box 8 is electrically connected to the servo motor by signals.

[0028] refer to Figure 3 As shown, in order to limit the position of the placement rack entering the drying chamber 7, two symmetrically distributed limiting rails 24 are provided at the bottom of the drying chamber 7. The limiting rails 24 stipulate that the placement rack is always in the middle area of ​​the drying chamber 7.

[0029] In order to prevent the air inlet pipe 3 and the air return pipe 4 from being directly exposed to the air, which may cause burns to workers when they are inspecting and repairing the pipes, the outer walls of the air inlet pipe 3 and the air return pipe 4 are wrapped with heat-insulating tin foil.

[0030] When the utility model is used:

[0031] First, place the plate on the plate placement rack. You only need to keep the plate in a vertical state. Rollers are set at the four corners of the bottom of the rack to facilitate the rack to be pushed into the drying chamber 7. One drying chamber 7 can accommodate multiple racks. When all racks are placed, start drying.

[0032] Then, the air supply device delivers the drying gas into the drying chamber 7 through the air inlet pipe 3, the transverse pipe 5 and the air inlet channel 9. After the drying gas is heated by the heating coil 10, the temperature reaches the applicable range. The drying gas passes through the drying chamber 7. When the baffle 12 is in the initial state, the filter holes on the right side of the partition 6 are completely blocked. At this time, after the drying gas enters the drying chamber 7, it stays in the drying chamber 7 for about 1-3 minutes.

[0033] Secondly, the servo motor starts to drive the connecting rod 17 to rotate, and the block 20 reciprocates within the stroke of the reciprocating thread. During the movement of the block 20, the block 20 squeezes the connecting pin 14 to move. At this time, the block 20 slowly expands, and the drying gas accumulated in the drying chamber 7 quickly enters the return air channel 11 through the filter hole;

[0034] Finally, when the drying is finished, turn off the transmission motor 23 and other equipment, open the sealing door 2, and push the placement rack out.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrochemical lithium extraction plate drying device, comprising a housing (1) and a sealing door (2) arranged at the front end of the housing (1), characterized in that: A plurality of air inlet pipes (3) distributed at equal intervals are fixed to the right side of the top of the shell (1), and the air inlet pipes (3) are externally connected to air supply equipment. A plurality of air return pipes (4) distributed at equal intervals are fixed to the left side of the top of the shell (1). A plurality of transverse pipes (5) matching the air inlet pipes (3) are fixed inside the shell (1), and the right sides of the plurality of transverse pipes (5) are connected to the corresponding air inlet pipes (3). A partition (6) is fixed inside the shell (1) to form a drying chamber (7), and the partition The left and right sides of the housing (6) are provided with filter holes, the partition (6) and the inner wall of the left shell (1) form an air inlet channel (9), a heating coil (10) is arranged in the air inlet channel (9), the left side of the transverse tube (5) is connected to the air inlet channel (9), the partition (6) and the inner wall of the right shell (1) form a return air channel (11), the return air duct (4) is connected to the return air channel (11), and a pressure sensor and a temperature sensor are arranged in the drying chamber (7); A plurality of baffles (12) arranged vertically are rotatably connected to the right side wall of the partition (6), and two symmetrically distributed slide grooves (13) are provided on the inner side surface of the baffle (12). A connecting pin (14) penetrating the partition (6) is provided in the slide groove (13), and a connecting groove (15) is provided in the slide groove (13). A connecting shaft (16) penetrating the connecting pin (14) is provided in the connecting groove (15), and the end of the connecting pin (14) away from the slide groove (13) is double-arc surface. A plurality of connecting rods (17) equidistantly arranged vertically are provided in the return air channel (11), and the plurality of connecting rods (17) match the baffle (12). 7) is provided with two sections of reciprocating threads corresponding to the connecting pin (14), one of the connecting rods (17) is penetrated to the outer side of the shell (1) and a servo motor is fixed at one end, and a plurality of the connecting rods (17) are connected in pairs through a belt transmission structure, a slider (18) is slidably connected to the connecting rod (17), a connecting plate (19) is fixed to the slider (18), a stopper (20) is fixed to the end of the connecting plate (19) away from the slider (18), and both sides of the stopper (20) are arranged as arc surfaces, and a guide rod (21) penetrating the partition (6) is fixed to the top of the connecting pin (14), and the guide rod (21) is connected to the partition (6) through a spring.

2. The electrochemical lithium extraction plate drying equipment according to claim 1, characterized in that: A plurality of the transverse tubes (5) are respectively provided with a rotating shaft penetrating the housing (1); a guide blade (22) located in the transverse tube (5) is coaxially fixed on the rotating shaft; a transmission motor (23) is fixed on one end of the rotating shaft penetrating the outside of the housing (1); a control box (8) is provided on the housing (1); the control box (8) is electrically connected to the plurality of transmission motors (23); and the control box (8) is electrically connected to the servo motor.

3. The electrochemical lithium extraction plate drying equipment according to claim 1, characterized in that: Two symmetrically distributed limiting rails (24) are arranged at the bottom of the drying chamber (7).

4. The electrochemical lithium extraction plate drying equipment according to claim 1, characterized in that: The partition plate (6) is provided with a plurality of limit grooves (25) located below the connecting pin (14); a limit block (26) is fixed on one side of the stop block (20); and the limit block (26) slides inside the limit groove (25).

5. The electrochemical lithium extraction plate drying equipment according to claim 1, characterized in that: The outer walls of the air inlet pipe (3) and the air return pipe (4) are both wrapped with heat-insulating tin foil.

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