Special kettle for aging ternary precursor

Abstract

The utility model discloses a special kettle for aging a ternary precursor, which comprises a kettle body, an upper feed port and a lower discharge port which are arranged on the kettle body, and an observation component for observing the internal state of the kettle body, and further comprises an extraction mechanism which is arranged in the kettle body and is used for extracting layer by layer, the extraction mechanism comprises a liquid extraction pipe movably arranged in the kettle body in the vertical direction, an auxiliary water pump mounted at the upper end part of the outer side wall of the kettle body, a hose connected between the auxiliary water pump and the liquid extraction pipe, and a driving assembly for driving the liquid extraction pipe to move up and down. After aging is completed, a liquid layer in the kettle body is pumped out of the kettle body through cooperation of a liquid pumping pipe and a hose by utilizing suction force generated by an auxiliary water pump, so that only a precipitation layer is left in the kettle body, and the capability of respectively discharging the liquid layer and the precipitation layer is realized; and the condition that the quality of the aged ternary precursor raw material is reduced due to doping with liquid in the precipitation layer discharging process is prevented.

Description

Technical Field

[0001] The utility model relates to the field of sintering equipment for lithium-ion battery materials, and particularly relates to a special kettle for aging ternary precursors. Background Art

[0002] The ternary precursor material is specifically nickel cobalt manganese hydroxide, which is a precursor product of ternary composite cathode materials. Using nickel salts, cobalt salts, and manganese salts as raw materials, the ratio of nickel, cobalt, and manganese inside can be adjusted according to actual needs. The ternary precursor material needs to be aged in an aging kettle during processing. After the material has completely precipitated, the solution is allowed to stand for a period of time under certain conditions.

[0003] The utility model of the existing authorized application number CN210752590U discloses an aging kettle for ternary precursor processing, including a kettle body. The outer surface of the upper end of the kettle body is fixedly installed with a kettle cover. The outer surface of the lower end of the kettle body is fixedly installed with four groups of support frames. The outer surface of the upper end of the kettle cover is fixedly installed with a feed hopper.

[0004] Adopting the above technical solution, the baffle provides physical protection for the glass. When impacted, it can effectively prevent the glass from being damaged due to the impact force. Through the glass plate, the precipitation process inside the kettle body can be directly observed, and the time required for precipitation can be accurately judged, improving the time utilization rate. However, the above technical solution does not have the ability to discharge the liquid layer and the precipitation layer separately. During the process of discharging the precipitation layer, it is extremely easy to be mixed with the liquid, resulting in a decrease in the quality of the ternary precursor raw material after aging and reducing the use effect of the ternary precursor aging kettle. Summary of the Invention

[0005] The purpose of the utility model is to provide a special kettle for aging ternary precursors, which can discharge the liquid layer and the precipitation layer separately.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a special kettle for aging ternary precursors, including a kettle body, an upper feeding port, a lower discharging port, and an observation component arranged on the kettle body for observing the internal state of the kettle body. The special kettle includes an extraction mechanism arranged inside the kettle body for layer-by-layer extraction. The extraction mechanism includes: a liquid extraction pipe movably arranged inside the kettle body along the up and down direction, an auxiliary water pump installed on the upper end of the outer side wall of the kettle body, a hose connected between the auxiliary water pump and the liquid extraction pipe, and a driving component for driving the liquid extraction pipe to move up and down.

[0007] In another embodiment, the driving assembly includes an auxiliary block fixed inside the kettle body and having a bump protruding laterally at the top, a lead screw rotatably connected between the top of the bump and the bottom of the kettle body, a moving nut threadedly connected to the lead screw and having one side slidably connected to the side of the auxiliary block, a servo motor installed on the kettle body and used to drive the lead screw to rotate, the liquid extraction pipe is connected to the moving nut, and the rotational freedom of the moving nut is restricted by the auxiliary block. When the servo motor rotates, the lead screw rotates, thereby driving the moving nut to move up and down along the auxiliary block. The lead screw is rotatably connected to the bump through an auxiliary bearing. The driving assembly can also be a hydraulic cylinder or a pneumatic cylinder, and the free end of the piston rod is connected to the liquid extraction pipe.

[0008] In another embodiment, the moving nut is provided with a quick connector for quick disassembly and assembly. The quick connector is provided with a socket hole, and the liquid extraction pipe is inserted into the quick connector.

[0009] In another embodiment, an overflow pipe for preventing excessive injection of materials is provided at the upper end of the outer side wall of the kettle body.

[0010] In another embodiment, the observation assembly includes an observation pipe provided on the outer side wall of the kettle body and having both upper and lower ends communicating with the inside of the kettle body. The observation pipe is made of a transparent material.

[0011] In another embodiment, the observation assembly includes a glass observation window embedded in the kettle body and a protection plate rotatably connected to the kettle body. The protection plate has at least one state of covering the glass observation window.

[0012] In another embodiment, the observation assembly includes a connecting block fixed on the outer side wall of the kettle body, and the protection plate is rotatably connected to the connecting block.

[0013] In another embodiment, the observation assembly includes a positioning lock fixed on the outer side wall of the kettle body. A locking pin is rotatably connected to the positioning lock. When the protection plate covers the glass observation window, the protection plate is stuck on the positioning lock, and the locking pin is located outside the protection plate. Rotating the locking pin locks the protection plate.

[0014] In another embodiment, a feed pipe is provided at the upper feeding port. The outer surface of the feed pipe is threadedly connected to a kettle cover. A rotating handle is fixedly connected to the top end of the kettle cover. An electromagnetic valve is provided at the lower discharging port.

[0015] In another embodiment, a liquid inlet pipe and a pressure relief pipeline are fixedly communicated with the upper surface of the kettle body.

[0016] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art: The special aging kettle for ternary precursor can add ternary precursor materials into the kettle body through the feed pipe, and use the glass observation window to watch the precipitation process of the ternary precursor inside in real time. After aging is completed, the suction generated by the auxiliary water pump is used to pump the liquid layer in the kettle body out of the kettle body through the cooperation of the liquid extraction pipe and the hose, so that only the precipitation layer remains in the kettle body. Then, the precipitation layer is discharged and collected through the cooperation of the lower discharge port and the solenoid valve. At the same time, the power generated by the servo motor drives the lead screw to rotate forward or backward, and the moving nut drives the quick connector to move up and down in the auxiliary block. When the quick connector moves, the liquid extraction pipe can move at the same time, so as to extract liquid layers at different heights, realizing the ability to discharge the liquid layer and the precipitation layer separately, preventing the quality of the ternary precursor raw material from decreasing due to being mixed with the liquid during the discharge of the precipitation layer, and improving the use effect of the special aging kettle for ternary precursor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 is a half-sectional view of the present utility model;

[0019] Figure 3 is a half-sectional view of the present utility model from another angle;

[0020] Figure 4 is a structural schematic diagram of the protective plate of the present utility model.

[0021] In the figure: 1, kettle body; 2, feed pipe; 3, glass observation window; 4, auxiliary block; 5, servo motor; 6, lead screw; 7, moving nut; 8, quick connector; 9, liquid extraction pipe; 10, auxiliary water pump; 11, hose; 12, lower discharge port; 13, solenoid valve; 14, kettle cover; 15, rotating handle; 16, liquid inlet pipe; 17, observation pipe; 18, auxiliary bearing; 19, pressure relief pipeline; 20, overflow pipe; 21, support column; 22, firm block; 23, connecting block; 24, protective plate; 25, positioning lock; 26, locking pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further explained below with reference to the accompanying drawings.

[0023] As Figures 1-4 shown, the special aging kettle for ternary precursor includes a kettle body 1, an upper feeding port and a lower discharge port 12 provided on the kettle body 1, and an observation assembly for observing the internal state of the kettle body 1. The special kettle includes an extraction mechanism provided in the kettle body 1 for layer-by-layer extraction.

[0024] Specifically, the extraction mechanism includes: a liquid extraction pipe 9 movably arranged in the kettle body 1 in the vertical direction, an auxiliary water pump 10 installed on the upper end of the outer side wall of the kettle body 1, a hose 11 connected between the auxiliary water pump 10 and the liquid extraction pipe 9, and a driving component for driving the liquid extraction pipe 9 to move up and down. The driving component includes an auxiliary block 4 fixed in the kettle body 1 and having a convex block protruding laterally at the top, a lead screw 6 rotatably connected between the top of the convex block and the bottom of the kettle body 1, a moving nut 7 threadedly connected to the lead screw 6 and having one side slidably connected to the side of the auxiliary block 4, a servo motor 5 installed on the kettle body 1 and used to drive the lead screw 6 to rotate. The liquid extraction pipe 9 is connected to the moving nut 7, and the rotational freedom of the moving nut 7 is restricted by the auxiliary block 4. When the servo motor 5 rotates, the lead screw 6 rotates, thereby driving the moving nut 7 to move up and down along the auxiliary block 4. The lead screw 6 is rotatably connected to the convex block through an auxiliary bearing 18. The driving component can also be a hydraulic cylinder or a pneumatic cylinder, and the free end of the piston rod is connected to the liquid extraction pipe 9. The moving nut 7 is provided with a quick connector 8 for quick disassembly and assembly. The quick connector 8 is provided with a socket hole, and the liquid extraction pipe 9 is inserted into the quick connector 8. An overflow pipe 20 for preventing excessive injection of materials is provided on the upper end of the outer side wall of the kettle body 1.

[0025] The observation component includes an observation pipe 17 provided on the outer side wall of the kettle body 1 and having both upper and lower ends communicating with the inside of the kettle body 1, a glass observation window 3 embedded in the kettle body 1, a protective plate 24 rotatably connected to the kettle body 1, a connecting block 23 fixed to the outer side wall of the kettle body 1, and a positioning lock 25 fixed to the outer side wall of the kettle body 1. The observation pipe 17 is made of a transparent material. The protective plate 24 has at least one state of covering the glass observation window 3. The protective plate 24 is rotatably connected to the connecting block 23. A locking pin 26 is rotatably connected to the positioning lock 25. When the protective plate 24 covers the glass observation window 3, the protective plate 24 is clamped on the positioning lock 25, and the locking pin 26 is located outside the protective plate 24. Rotating the locking pin 26 locks the protective plate 24.

[0026] Four support columns 21 are fixedly connected to the bottom end of the kettle body 1. A firm block 22 is fixedly connected to the outer surface of each support column 21. The support column 21 can play a role in supporting the kettle body 1, increasing the height of the kettle body 1 to make it more convenient to use. At the same time, the firm block 22 can increase the contact area between the support column 21 and the ground and improve the stability of the support column 21 during support.

[0027] A feed pipe 2 is provided on the upper feed port. The outer surface of the feed pipe 2 is threadedly connected with a kettle cover 14. A rotating handle 15 is fixedly connected to the top of the kettle cover 14. An electromagnetic valve 13 is provided on the lower discharge port 12. The upper surface of the kettle body 1 is fixedly communicated with a liquid inlet pipe 16 and a pressure relief pipeline 19.

[0028] The working principle of the present utility model is as follows: First, connect the servo motor 5, the auxiliary water pump 10, and the solenoid valve 13 to the power supply. When aging of the ternary precursor is required, rotate the rotating handle 15, thereby removing the kettle lid 14 from the surface of the feed pipe 2. Then, add the ternary precursor raw materials with adjusted proportion into the kettle body 1 through the feed pipe 2, and add liquid into the kettle body 1 by using the liquid inlet pipe 16. At this time, the observation pipe 17 can be used to observe the height of the liquid in the kettle body 1, and at the same time, the overflow pipe 20 can automatically discharge the liquid when it is excessive. Then, rotate the positioning lock 25 to release the limit on the protection plate 24 and open the protection plate 24. Rely on the glass observation window 3 to observe the aging state of the ternary precursor raw materials in the kettle body 1. At the same time, the pressure relief pipe 19 can automatically discharge the increased air pressure in the kettle body 1. When the aging is completed, start the servo motor 5, use the power generated by the servo motor 5 to drive the lead screw 6 to rotate forward or backward, and make the moving nut 7 drive the quick connector 8 to move up and down in the auxiliary block 4. When the quick connector 8 moves, the liquid extraction pipe 9 and the hose 11 can be moved simultaneously and moved above the sediment layer to facilitate the extraction of liquid layers at different heights. Then, start the auxiliary water pump 10, and rely on the suction force generated by the auxiliary water pump 10 to pump the liquid layer in the kettle body 1 out of the kettle body 1 through the cooperation of the liquid extraction pipe 9 and the hose 11, so that only the sediment layer remains in the kettle body 1. Then, rely on the cooperation of the lower discharge port 12 and the solenoid valve 13 to discharge and collect the sediment layer, achieving the ability to discharge the liquid layer and the sediment layer separately, avoiding mixing of the two, effectively increasing the quality of the ternary precursor raw materials after aging, and at the same time improving the use effect of the special kettle for aging of the ternary precursor.

[0029] The above embodiments are only used to illustrate the technical concept and characteristics of the present utility model, and their purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A special kettle for aging a ternary precursor, comprising a kettle body, an upper feed inlet and a lower feed outlet arranged on the kettle body, and an observation component for observing the internal state of the kettle body, characterized in that: The special kettle includes an extraction mechanism arranged in the kettle body for extracting layer by layer, and the extraction mechanism includes: a liquid extraction pipe arranged in the kettle body and movable in the up and down directions, an auxiliary water pump installed on the upper end of the outer wall of the kettle body, a hose connected between the auxiliary water pump and the liquid extraction pipe, and a driving component that drives the liquid extraction pipe to move up and down.

2. The ternary precursor aging kettle according to claim 1, characterized in that: The driving assembly includes an auxiliary block fixed in the kettle body and having a protrusion extending laterally on the top, a screw rod rotatably connected between the top of the protrusion and the bottom of the kettle body, a moving nut threadedly connected to the screw rod and having a side surface slidably connected to the side surface of the auxiliary block, and a servo motor installed on the kettle body and used to drive the screw rod to rotate. The liquid extraction tube is connected to the moving nut, and the rotational freedom of the moving nut is limited by the auxiliary block. When the servo motor rotates, the screw rod rotates, thereby driving the moving nut to fit on the auxiliary block and move in the up and down directions.

3. The ternary precursor aging kettle according to claim 2, characterized in that: The movable nut is provided with a quick connector for quick disassembly and assembly, and the quick connector is provided with a plug-in hole.

4. The special kettle for aging ternary precursor according to claim 1, characterized in that: An overflow pipe is arranged on the upper end of the outer side wall of the kettle body to prevent excessive injection of materials.

5. The special kettle for aging ternary precursor according to claim 1, characterized in that: The observation assembly comprises an observation tube which is arranged on the outer wall of the kettle body and the upper and lower ends of which are connected with the interior of the kettle body. The observation tube is made of a transparent material.

6. The special kettle for aging ternary precursor according to claim 1, characterized in that: The observation assembly comprises a glass observation window embedded in the kettle body and a protection plate rotatably connected to the kettle body, wherein the protection plate has at least one state of covering the glass observation window.

7. The special kettle for aging ternary precursor according to claim 6, characterized in that: The observation assembly comprises a connection block fixed on the outer side wall of the kettle body, and the protection plate is rotatably connected to the connection block.

8. The special kettle for aging ternary precursor according to claim 6, characterized in that: The observation assembly includes a positioning lock fixed on the outer wall of the kettle body, and a locking pin is rotatably connected to the positioning lock. When the protective plate covers the glass observation window, the protective plate is stuck on the positioning lock, and the locking pin is located on the outer side of the protective plate. The protective plate is locked by rotating the locking pin.

9. The special kettle for aging ternary precursor according to claim 1, characterized in that: The upper feed port is provided with a feed pipe, the outer surface of the feed pipe is threadedly connected with a kettle cover, the top of the kettle cover is fixedly connected with a rotating handle, and the lower discharge port is provided with a solenoid valve.

10. The special kettle for aging ternary precursor according to claim 1, characterized in that: The upper surface of the kettle body is fixedly connected with a liquid inlet pipe and a pressure relief pipe.

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