Soluble salt pore-forming device of electrochemical lithium extraction polar plate

Abstract

The utility model relates to a salt-dissolving pore-forming device for an electrochemical lithium extraction polar plate, which effectively solves the problem that a large-scale salt-dissolving pore-forming device for the lithium extraction polar plate is lacked in the market. Comprising a pure water tank, a baffle is arranged in the pure water tank and divides the pure water tank into a main cavity and an auxiliary cavity, an inclined guide plate is fixed to the bottom of the pure water tank, an inclined area and a horizontal area are formed at the bottom of the pure water tank, and a water inlet pipe is arranged on the side wall of the main cavity in a penetrating mode; a water inlet coil pipe located in the pure water tank is fixed at one end of the water inlet pipe, and a plurality of water outlet holes are formed in the water inlet coil pipe; the water purifier is ingenious in structure and convenient to use, pure water in the main cavity forms a circulation through the water pumping pipe, the first circulating pump, the water inlet pipe and the water inlet coil pipe by arranging the first circulating pump, the water inlet pipe, the water pumping pipe and the like, the flowability of the pure water is enhanced in the pure water circulation process, a circulating flow zone is formed in the main cavity, and the water purification effect is improved. Therefore, the salt dissolving speed of the lithium extraction pole plate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium extraction equipment, in particular to a salt dissolving pore-making device for an electrochemical lithium extraction plate. Background Art

[0002] Electrochemical lithium extraction is a technology that uses electrochemical methods to extract lithium metal or lithium ions from lithium-containing resources. This process usually involves placing lithium-containing raw materials in an electrochemical cell and applying an electric current to drive lithium ions from the raw materials to migrate and deposit on the electrodes, thereby achieving lithium extraction and enrichment. This method can be applied to different types of lithium-containing resources, including salt lake brine, ores and seawater.

[0003] Electrochemical lithium extraction plates are an important part of electrochemical lithium extraction equipment. The reaction between the active materials on the plates and the lithium ions in the salt lake brine is the principle of lithium extraction in electrochemical lithium extraction equipment. On this basis, the active materials on the surface and inside of the plates need to be in full contact with the lithium ions in the brine to maximize the reaction speed and lithium extraction rate, so the specific surface area determines the performance of the electrochemical lithium extraction equipment.

[0004] The existing methods of increasing the specific surface area of ​​lithium extraction plates still have the following problems:

[0005] 1. Before the electrochemical lithium extraction equipment is assembled, the electrochemical lithium extraction plate needs to complete the salt soaking and pore-making process to increase the specific surface area. Since the electrochemical lithium extraction technology is a globally emerging salt lake lithium extraction technology, there is a lack of large-scale salt soaking and pore-making equipment on the market.

[0006] 2. When using the salt soaking hole making equipment, granular materials often accumulate at the bottom of the equipment, causing trouble for the subsequent equipment cleaning work. Utility Model Content

[0007] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a salt dissolving pore-making device for electrochemical lithium extraction plates, which effectively solves the problems mentioned in the background technology.

[0008] The technical solution is that the utility model comprises a pure water tank, wherein a baffle is arranged inside the pure water tank, wherein the baffle divides the pure water tank into a main chamber and a secondary chamber, an inclined guide plate is fixed to the bottom of the pure water tank, and an inclined area and a horizontal area are formed at the bottom of the pure water tank;

[0009] A water inlet pipe is provided through the side wall of the main cavity, a water inlet coil located inside the pure water tank is fixed at one end of the water inlet pipe, a plurality of water outlet holes are provided on the water inlet coil, a first circulation pump located outside the pure water tank is fixed at the other end of the water inlet pipe, a water extraction pipe that penetrates into the main cavity is fixed on the first circulation pump, a filter screen is provided on the port of the water extraction pipe, a water outlet pipe away from the water extraction pipe is provided at the bottom of the pure water tank, and the water outlet pipe is located in the horizontal area;

[0010] A plurality of heating coils are arranged in the main cavity, and a temperature sensor is arranged in the main cavity;

[0011] A cleaning assembly is provided on the side wall of the main cavity, and the cleaning assembly includes two symmetrically distributed stainless steel conveyor belts, the stainless steel conveyor belts have the same inclination angle as the guide plate, the effective working length of the stainless steel conveyor belts is consistent with the width of the guide plate, rollers are provided at both ends of the stainless steel conveyor belts, a transmission shaft is coaxially fixed between two corresponding rollers, a motor is provided at one end of one of the transmission shafts that passes through the side wall of the pure water tank, and the cleaning assembly also includes at least one brush, and the two ends of the brush are respectively fixed to the two stainless steel conveyor belts;

[0012] An electric control box is arranged on the side wall of the pure water tank, a control unit is arranged inside the electric control box, and the electric control box is electrically connected to the motor, the first circulation pump, the heating coil and the temperature sensor respectively.

[0013] Preferably, a pressure tank is provided on the outside of the pure water tank, a downpipe connected to the water inlet pipe is provided on the top of the pressure tank, a one-way valve is provided on the downpipe, a drain pipe penetrating into the horizontal area is provided on the bottom of the pressure tank, a solenoid valve located outside the pure water tank is provided on the drain pipe, a time relay is provided on the solenoid valve and both the solenoid valve and the time relay are electrically connected to the electric control box, a plurality of cleaning pipes distributed at equal intervals are provided on the drain pipe, the width of the cleaning pipe is consistent with the width of the horizontal area, and a drainage groove is provided obliquely below the cleaning pipe.

[0014] Preferably, a second circulation pump is arranged outside the pure water tank, a liquid extraction pipe which runs through the bottom of the sub-cavity is fixed to the liquid extraction end of the second circulation pump, a liquid outlet pipe which is connected with the water inlet pipe is fixed to the liquid outlet end of the second circulation pump, and the second circulation pump is electrically connected with the electrical control box.

[0015] Preferably, an arc-shaped plate is fixed to one end of the guide plate, and the arc-shaped plate is in close contact with the inner wall of the pure water tank.

[0016] Preferably, universal wheels are respectively provided at the four corners of the bottom of the pure water tank, and reinforcing ribs are provided on the outer wall of the pure water tank.

[0017] Preferably, a spare hole located above the water extraction pipe is provided on the side wall of the pure water tank, and an internal thread is provided inside the spare hole.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. Through the first circulation pump, water inlet pipe and water extraction pipe, the pure water in the main chamber forms a cycle through the water extraction pipe, the first circulation pump, the water inlet pipe and the water inlet coil. During the pure water circulation process, the fluidity of the pure water is enhanced, and a circulating flow belt is formed in the main chamber, thereby enhancing the salt dissolution rate of the lithium extraction plate.

[0020] 2. Through the settings of stainless steel conveyor belt, motor and brush, start the motor to drive the transmission shaft to rotate, the stainless steel conveyor belt starts to work immediately, and the brush moves with the stainless steel conveyor belt. The brush cleans the guide plate during the movement and cleans the particles stagnant in the inclined area to the horizontal area, thereby achieving the effect of easy cleaning and reducing the labor intensity of workers.

[0021] 3. Through the settings of pressure tank, sewer pipe and cleaning pipe, when the pure water inside the pressure tank reaches a certain amount, the solenoid valve opens after receiving a certain pressure signal, and the time relay controls the opening time of the solenoid valve. Pure water with a certain pressure is guided by the drain pipe and the cleaning pipe, impacting the impurities and particulate matter in the horizontal area and pushing them to gather near the outlet pipe, reducing the workers' cleaning actions in the horizontal area and further reducing the workers' labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereogram of the utility model.

[0023] Figure 2 It is a cross-sectional view of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the spare hole in the utility model.

[0025] Figure 4 It is a structural schematic diagram of the water inlet coil in the utility model.

[0026] Figure 5 It is a structural schematic diagram of the cleaning component in the utility model.

[0027] Figure 6 It is a structural schematic diagram of the pressure tank in the utility model.

[0028] Figure 7 It is a structural schematic diagram of the drainage trough in the utility model.

[0029] Explanation of the symbols in the schematic diagram:

[0030] 1. Pure water tank; 2. Baffle; 3. Main cavity; 4. Sub-cavity; 5. Guide plate; 6. Water inlet pipe; 7. Water inlet coil; 8. Water outlet hole; 9. First circulation pump; 10. Suction pipe; 11. Water outlet pipe; 12. Heating coil; 13. Temperature sensor; 14. Stainless steel conveyor belt; 15. Roller; 16. Drive shaft; 17. Motor; 18. Brush; 19. Electric control box; 20. Pressure tank; 21. Downpipe; 22. Drain pipe; 23. Cleaning pipe; 24. Drain trough; 25. Second circulation pump; 26. Liquid extraction pipe; 27. Liquid outlet pipe; 28. Curved plate; 29. ​​Universal wheel; 30. Reinforcement rib; 31. Spare hole. DETAILED DESCRIPTION

[0031] 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.

[0032] Depend on Figures 1 to 5 A pure water tank 1 is provided, wherein a baffle 2 is arranged inside the pure water tank 1, wherein the baffle 2 divides the pure water tank 1 into a main chamber 3 and a sub-chamber 4, wherein an inclined guide plate 5 is fixed to the bottom of the pure water tank 1, wherein an inclined area and a horizontal area are formed at the bottom of the pure water tank 1, and pure water is arranged inside the main chamber 3. When the lithium extraction plates are processed, the plates in groups are placed on the corresponding support frames, and then hoisted into the main chamber 3 by a crane or other equipment. Usually, a support arm is arranged on the support frame, and the support arm only needs to be mounted on the side wall of the pure water tank 1. If there is no support arm, a hoisting device is used for continuous hoisting. By setting an inclined guide plate 5, when the lithium extraction plates are in the process of dissolving salt and forming holes, the particles generated fall onto the guide plate 5, and the particles slide from the inclined area to the horizontal area under the action of gravity, so that the particles are easily collected and cleaned;

[0033] In order to enhance the degree of pure water turbulence inside the main cavity 3 and improve the salt dissolving speed of the lithium extraction plate, a water inlet pipe 6 is provided through the side wall of the main cavity 3, and a water inlet coil 7 located inside the pure water tank 1 is fixed at one end of the water inlet pipe 6, and a plurality of water outlet holes 8 are provided on the water inlet coil 7, and the water outlet holes 8 are evenly spaced on the water inlet coil 7. A first circulation pump 9 located outside the pure water tank 1 is fixed at the other end of the water inlet pipe 6, and a water pumping pipe 10 penetrating into the main cavity 3 is fixed on the first circulation pump 9, and a filter screen is provided on the port of the water pumping pipe 10 for blocking impurities. The bottom of the pure water tank 1 is provided with a filter screen. There is a water outlet pipe 11 away from the water pumping pipe 10, and the water outlet pipe 11 is located in the horizontal area. When the pure water tank 1 has been used for a cycle, which is about a week, the pure water in the pure water tank 1 needs to be replaced, and all the pure water in the pure water tank 1 is discharged through the water outlet pipe 11. Through the first circulation pump 9, the water inlet pipe 6 and the water pumping pipe 10, the pure water in the main chamber 3 passes through the water pumping pipe 10, the first circulation pump 9, the water inlet pipe 6 and the water inlet coil 7 to form a cycle. In the process of pure water circulation, the fluidity of the pure water is enhanced, and a circulating flow belt is formed in the main chamber 3, thereby enhancing the salt dissolution rate of the lithium extraction plate;

[0034] It is found in long-term use that the salt dissolving speed in winter decreases significantly. A plurality of heating coils 12 are arranged in the main chamber 3, and a temperature sensor 13 is arranged in the main chamber 3. By setting the temperature sensor 13 and the plurality of heating coils 12, the pure water temperature in the main chamber 3 is always controlled between 35° and 40°, ensuring that the salt dissolving speed of the lithium extraction plate is always at an optimal value.

[0035] In order to facilitate the cleaning and collection of particles in the main chamber 3, a cleaning assembly is provided on the side wall of the main chamber 3, and the cleaning assembly includes two symmetrically distributed stainless steel conveyor belts 14. The stainless steel conveyor belt 14 is a prior art and will not be described in detail here. The stainless steel conveyor belt 14 has the same inclination angle as the guide plate 5, and the effective working length of the stainless steel conveyor belt 14 is consistent with the width of the guide plate 5. Rollers 15 are provided at both ends of the stainless steel conveyor belt, and a transmission shaft 16 is coaxially fixed between the two corresponding rollers 15, and one of the transmission shafts 16 penetrates A motor 17 is provided at one end of the side wall of the pure water tank 1, and the cleaning component further includes at least one brush 18, and the two ends of the brush 18 are respectively fixed to the two stainless steel conveyor belts 14. Through the stainless steel conveyor belt 14, the motor 17 and the brush 18, the motor 17 is started to drive the transmission shaft 16 to rotate, and the stainless steel conveyor belt 14 immediately starts to work, and the brush 18 moves with the stainless steel conveyor belt 14. The brush 18 cleans the guide plate 5 during the movement, and cleans the particles stagnant in the inclined area into the horizontal area, thereby achieving the effect of facilitating cleaning and reducing the labor intensity of workers;

[0036] In order to facilitate the control of the power source provided on the pure water tank 1 and form a smooth execution process, an electric control box 19 is provided on the side wall of the pure water tank 1, and a control unit is provided inside the electric control box 19. The electric control box 19 is electrically connected to the motor 17, the first circulation pump 9, the heating coil 12 and the temperature sensor 13 respectively.

[0037] refer to Figure 1 , Figure 6 and Figure 7 As shown, in order to facilitate the cleaning of impurities such as particulate matter in the horizontal area, a pressure tank 20 is provided on the outside of the pure water tank 1, and a downpipe 21 connected to the water inlet pipe 6 is provided on the top of the pressure tank 20, and a one-way valve is provided on the downpipe 21. When the first circulating pump 9 is circulating, part of the pure water enters the interior of the pressure tank 20 through the downpipe 21, and a drain pipe 22 that runs through the horizontal area is provided at the bottom of the pressure tank 20. A solenoid valve located outside the pure water tank 1 is provided on the drain pipe 22, and a time relay is provided on the solenoid valve. The solenoid valve and the time relay are both electrically connected to the electric control box 19, and a plurality of cleaning pipes 23 distributed at equal intervals are provided on the drain pipe 22, and the width of the cleaning pipe 23 is equal to the width of the horizontal area. In accordance with the above, a drainage groove 24 is provided at an angle below the cleaning pipe 23, and the opening direction of the drainage groove 24 corresponds to the outlet pipe 11. The pure water discharged from the drainage groove 24 moves toward the outlet pipe 11, and is arranged through the pressure tank 20, the downpipe 21 and the cleaning pipe 23. When the pure water inside the pressure tank 20 reaches a certain amount, the solenoid valve opens after receiving a certain pressure signal, and the time relay controls the opening time of the solenoid valve. In this embodiment, once the solenoid valve is opened, the opening duration is 8s. Pure water with a certain pressure is guided by the drainage pipe 22 and the cleaning pipe 23, impacts the impurities and particulate matter in the horizontal area and pushes them to gather near the outlet pipe 11, thereby reducing the workers' cleaning actions in the horizontal area and further reducing the workers' labor intensity.

[0038] refer to Figure 1 and Figure 5 As shown, considering that the efficiency of using only pure water for salt dissolution and pore formation is low, a second circulation pump 25 is arranged outside the pure water tank 1, and a liquid extraction pipe 26 that runs through the bottom of the sub-cavity 4 is fixed to the liquid extraction end of the second circulation pump 25, and a liquid outlet pipe 27 that is connected to the water inlet pipe 6 is fixed to the liquid outlet end of the second circulation pump 25. The second circulation pump 25 is electrically connected to the electric control box 19. Through the second circulation pump 25, the liquid extraction pipe 26 and the liquid outlet pipe 27, a catalyst is arranged in the sub-cavity 4. When the salt dissolving speed in the main cavity 3 is slow, the second circulation pump 25 is started to send part of the catalyst in the sub-cavity 4 into the main cavity 3 to increase the salt dissolving speed of the lithium extraction plate.

[0039] refer to Figure 2As shown, in order to reduce the cleaning dead corners of the brush 18, an arc plate 28 is fixed at one end of the guide plate 5, and the arc plate 28 is tightly attached to the inner wall of the pure water tank 1. When the brush 18 moves and encounters the joint between the guide plate 5 and the pure water tank 1, the bristles on the brush 18 directly contact the arc plate 28, bringing out impurities in the corners.

[0040] refer to Figure 1 and Figure 2 As shown, universal wheels 29 are respectively provided at the four corners of the bottom of the pure water tank 1 to facilitate the movement of the pure water tank 1 , and reinforcing ribs 30 are provided on the outer wall of the pure water tank 1 to improve the supporting strength of the pure water tank 1 .

[0041] refer to Figure 3 As shown, taking into account the circulation rate inside the pure water tank 1 and the disturbance degree of the pure water, a spare hole 31 located above the water suction pipe 10 is opened on the side wall of the pure water tank 1, and an internal thread is opened inside the spare hole 31. The spare hole 31 is set, and the spare hole 31 can be directly used as the connection point of the second water suction pipe 10 or the water inlet pipe 6.

[0042] When the utility model is used:

[0043] First, place the group of plates on the corresponding support frame, and then use a crane or other equipment to lift them into the main chamber 3. If support arms are set on both sides of the support frame, just put the support arms on the side wall of the pure water tank 1. If there is no support arm, use a lifting device to continuously lift it;

[0044] Then, the heating coil 12, the temperature sensor 13 and the first circulation pump 9 are started through the electric control box 19, and the pure water in the main chamber 3 forms a cycle through the water pumping pipe 10, the first circulation pump 9, the water inlet pipe 6 and the water inlet coil 7. During the pure water circulation process, the fluidity of the pure water is enhanced, and a circulating flow belt is formed in the main chamber 3. The heating coil 12 and the temperature sensor 13 control the temperature of the pure water to ensure that the salt dissolution rate of the lithium extraction plate is always at an optimal value;

[0045] Secondly, the starter motor 17 drives the transmission shaft 16 to rotate, and the stainless steel conveyor belt 14 starts working immediately. The brush 18 moves along with the stainless steel conveyor belt 14. The brush 18 cleans the guide plate 5 during the movement, and cleans the particles stagnant in the inclined area to the horizontal area. When the pure water inside the pressure tank 20 reaches a certain amount, the solenoid valve opens after receiving a certain pressure signal, and the time relay controls the opening time of the solenoid valve. In this embodiment, once the solenoid valve is opened, the opening duration is 8s. The pure water with a certain pressure is guided by the drain pipe 22 and the cleaning pipe 23, and impacts the impurities and particles in the horizontal area and pushes them to gather near the outlet pipe 11.

[0046] Finally, after the pure water tank 1 has been used for a cycle of about one week, the pure water in the pure water tank 1 needs to be replaced, and all the pure water in the pure water tank 1 is discharged through the water outlet pipe 11.

[0047] 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. A salt dissolving pore-making device for electrochemical lithium extraction plates, characterized in that: The pure water tank (1) comprises a baffle (2) disposed inside the pure water tank (1), wherein the baffle (2) divides the pure water tank (1) into a main chamber (3) and a secondary chamber (4); an inclined guide plate (5) is fixed to the bottom of the pure water tank (1), and an inclined area and a horizontal area are formed at the bottom of the pure water tank (1); A water inlet pipe (6) is provided through the side wall of the main cavity (3); a water inlet coil (7) located inside the pure water tank (1) is fixed to one end of the water inlet pipe (6); a plurality of water outlet holes (8) are provided on the water inlet coil (7); a first circulation pump (9) located outside the pure water tank (1) is fixed to the other end of the water inlet pipe (6); a water extraction pipe (10) extending through the main cavity (3) is fixed to the first circulation pump (9); a filter screen is provided on the port of the water extraction pipe (10); a water outlet pipe (11) away from the water extraction pipe (10) is provided at the bottom of the pure water tank (1); the water outlet pipe (11) is located in the horizontal area; A plurality of heating coils (12) are arranged in the main cavity (3), and a temperature sensor (13) is arranged in the main cavity (3); A cleaning component is provided on the side wall of the main chamber (3), and the cleaning component includes two symmetrically distributed stainless steel conveyor belts (14). The stainless steel conveyor belts (14) have the same inclination angle as the guide plate (5). The effective working length of the stainless steel conveyor belt (14) is consistent with the width of the guide plate (5). Rollers (15) are provided at both ends of the stainless steel conveyor belt (14). A transmission shaft (16) is coaxially fixed between two corresponding rollers (15). One end of one of the transmission shafts (16) that passes through the side wall of the pure water tank (1) is provided with a motor (17). The cleaning component also includes at least one brush (18), and the two ends of the brush (18) are respectively fixed to the two stainless steel conveyor belts (14); An electric control box (19) is arranged on the side wall of the pure water tank (1), a control unit is arranged inside the electric control box (19), and the electric control box (19) is electrically connected to the motor (17), the first circulation pump (9), the heating coil (12) and the temperature sensor (13) respectively.

2. The salt dissolving pore-making device for electrochemical lithium extraction plate according to claim 1, characterized in that: A pressure tank (20) is arranged outside the pure water tank (1), a downpipe (21) connected to the water inlet pipe (6) is arranged on the top of the pressure tank (20), a one-way valve is arranged on the downpipe (21), a drainage pipe (22) penetrating into the horizontal area is arranged at the bottom of the pressure tank (20), a solenoid valve located outside the pure water tank (1) is arranged on the drainage pipe (22), a time relay is arranged on the solenoid valve, the solenoid valve and the time relay are both electrically connected to the electric control box (19), a plurality of cleaning pipes (23) distributed at equal intervals are arranged on the drainage pipe (22), the width of the cleaning pipe (23) is consistent with the width of the horizontal area, and a drainage groove (24) is opened obliquely below the cleaning pipe (23).

3. The salt dissolving pore-making device for electrochemical lithium extraction plate according to claim 2, characterized in that: A second circulation pump (25) is arranged outside the pure water tank (1); a liquid extraction pipe (26) penetrating to the bottom of the auxiliary chamber (4) is fixed to the liquid extraction end of the second circulation pump (25); a liquid outlet pipe (27) connected to the water inlet pipe (6) is fixed to the liquid outlet end of the second circulation pump (25); and the second circulation pump (25) is electrically connected to the electric control box (19).

4. The salt dissolving pore-making device for electrochemical lithium extraction plate according to claim 3, characterized in that: An arc-shaped plate (28) is fixed to one end of the guide plate (5), and the arc-shaped plate (28) is in close contact with the inner wall of the pure water tank (1).

5. The salt dissolving pore-making device for electrochemical lithium extraction plate according to claim 4, characterized in that: Universal wheels (29) are respectively arranged at the four corners of the bottom of the pure water tank (1), and reinforcing ribs (30) are arranged on the outer wall of the pure water tank (1).

6. The salt dissolving pore-making device for electrochemical lithium extraction plate according to claim 5, characterized in that: The side wall of the pure water tank (1) is provided with a spare hole (31) located above the water extraction pipe (10), and the interior of the spare hole (31) is provided with an internal thread.

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