A lithium sulfate solution purification device

Abstract

The utility model relates to lithium sulfate solution purification processing technical field provides a lithium sulfate solution purification device, including purification processing jar, the top of purification processing jar is equipped with drive casing. The utility model discloses utilize the pre -reaction hollow shaft, vice stirring rod, solid -liquid separation screen mesh cylinder and inverted conical solid material sedimentation tank cooperation use on solid -liquid separation stirring mechanism, can integrate the function of pre -reaction, stirring mixing and solid -liquid separation in purification processing jar, need not to set up reaction jar and filter equipment alone, reduce material transfer link, improve purification efficiency, further, the variable -diameter type spiral pipe in reaction hollow shaft provides pre -reaction space for raw materials, makes the initial precipitation of impurity ion in advance, cooperation subsequent vice stirring rod's depth stirring, can make calcium, magnesium etc.

Description

Technical Field

[0001] This utility model relates to the field of lithium sulfate solution purification and processing technology, and in particular to a lithium sulfate solution purification device. Background Technology

[0002] Unpurified lithium sulfate solutions cannot meet the performance and safety requirements of fields such as batteries, pharmaceuticals and industry. Impurities in lithium sulfate solutions can have a direct negative impact on downstream applications. Therefore, purification is a key step in realizing its application value. Based on this, corresponding lithium sulfate solution purification devices have emerged. Patent CN218741990U discloses a lithium sulfate solution purification device, including a support and a reaction frame. The reaction frame is rotatably mounted on the upper part of the support. The device also includes a first motor, which is mounted on the upper left side of the support. The output shaft of the first motor is connected to the reaction frame. By activating the first motor, the output shaft rotates, causing the reaction frame to rotate forward, thus pouring the lithium sulfate solution out of the reaction frame. This allows the lithium sulfate solution to flow out more efficiently, facilitating collection by workers. Although the lithium sulfate solution purification device described above allows for convenient collection of the lithium sulfate solution by operators through a drive mechanism, it relies solely on the inertial shaking of the reaction frame during rotation to achieve mixing. This is far less effective than the turbulent mixing effect created by the auxiliary stirring rod, resulting in insufficient contact between impurity ions and the precipitant. Consequently, the removal rate of impurities such as calcium and magnesium is low. Furthermore, it requires manual or subsequent equipment for solid-liquid separation, leading to low separation efficiency. It also lacks integrated pre-reaction, stirring, and solid-liquid separation functions, making it impractical. Therefore, a lithium sulfate solution purification device needs to be designed. Utility Model Content

[0003] The purpose of this invention is to provide a lithium sulfate solution purification device to solve the defects of existing lithium sulfate solution purification devices, such as low processing efficiency and lack of integrated pre-reaction, stirring and mixing and solid-liquid separation functions.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lithium sulfate solution purification device, including a purification processing tank; The top of the purification processing tank is equipped with a drive housing, and a solid-liquid self-separation stirring mechanism is connected between the drive housing and the purification processing tank. The solid-liquid self-separation stirring mechanism includes a solid-liquid separation screen cylinder rotatably connected inside the purification processing tank, and an inverted conical solid sedimentation tank is fixed at the bottom of the solid-liquid separation screen cylinder. The inner side wall of the purification processing tank is provided with a spiral winding component of the same diameter that matches the solid-liquid separation screen cylinder. The top of the solid-liquid separation screen cylinder is fixed with a pre-reaction hollow shaft, and a variable diameter spiral tube is fixed inside the pre-reaction hollow shaft. A secondary stirring rod is rotatably connected inside the solid-liquid separation screen cylinder at one end of the pre-reaction hollow shaft, and a cleaning scraper is provided at one end of the secondary stirring rod. Raw material tanks are evenly installed above the purification and processing tank, and the top of the variable diameter spiral tube is connected to a guide trough through a rotary joint.

[0005] Furthermore, a liquid guiding channel is provided on the side of the same diameter spiral winding component near the solid-liquid separation screen cylinder, and a liquid pump connected to the bottom end of the liquid guiding channel is installed on the outside of the purification processing tank.

[0006] Furthermore, the vertical center line of the pre-reaction hollow shaft and the vertical center line of the solid-liquid separation screen cylinder are on the same vertical line, and the outer wall of the cleaning scraper and the inner wall of the purification processing tank abut against each other.

[0007] Furthermore, a support frame is fixed to the outer wall of the purification processing tank, and a fixed base plate matching the raw material tank is installed on the top of the support frame.

[0008] Furthermore, the raw material tank and the fixed base plate are connected by screws to form a disassembly and installation structure, and a vibration motor that matches the raw material tank is installed on the fixed base plate.

[0009] Furthermore, the material guide trough is fixed on the support frame, and a feeding pipe is connected between the material guide trough and the bottom of the raw material tank.

[0010] Furthermore, the drive housing is movably connected in sequence with a driven gear and a driving gear that match the pre-reaction hollow shaft and the auxiliary stirring rod. A servo motor is installed on the driving gear, and a drive arm is uniformly fixed between the driven gear and the solid-liquid separation screen cylinder.

[0011] Furthermore, a solid material discharge valve is installed at the bottom of the purification processing tank, and a rotary joint is movably connected between the solid material discharge valve and the inverted conical solid material sedimentation tank.

[0012] The lithium sulfate solution purification device provided by this utility model has the following advantages: By installing a solid-liquid self-separating stirring mechanism, and utilizing the pre-reaction hollow shaft, auxiliary stirring rod, solid-liquid separation screen cylinder, and inverted conical solid sedimentation tank on the mechanism, the functions of pre-reaction, stirring and mixing, and solid-liquid separation can be integrated into the purification processing tank. This eliminates the need for separate reaction tanks and filtration equipment, reduces material transfer steps, and improves purification efficiency. Furthermore, the variable-diameter spiral tube inside the reaction hollow shaft provides pre-reaction space for the raw materials, allowing impurity ions to form initial precipitates in advance. Combined with the deep stirring of the subsequent auxiliary stirring rod, the removal rate of impurities such as calcium and magnesium can be improved, solving the problem of poor purification effect caused by insufficient reaction in traditional devices. Moreover, the solid-liquid separation screen cylinder and the same-diameter spiral winding component work together, combining centrifugal force with spiral flow channel guidance to accelerate liquid passage through the screen. At the same time, the inverted conical solid sedimentation tank quickly collects the precipitate, reducing adhesion to the screen surface, and the cleaning scraper cleans the tank wall in real time, preventing impurities from accumulating and clogging, and extending continuous operation time. Equipped with a liquid pump, a feeding pipe, and a vibrating motor, the raw materials in the tank are smoothly fed in under gravity. Furthermore, the liquid that has undergone purification and separation is guided to the liquid guide channel by a spiral coil of the same diameter on the inner wall of the purification processing tank. It can be automatically extracted and collected in real time by the liquid pump. In addition, the precipitated impurities trapped by the screen gather along the inverted conical solid sedimentation tank, which is convenient for users to discharge and collect through the solid material discharge valve during each raw material replenishment. This optimizes the loading and unloading structure and improves processing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the cross-section of the purification processing tank of this utility model; Figure 3 This is a three-dimensional structural diagram of the auxiliary stirring rod of this utility model. Figure 4 This is a three-dimensional structural diagram of the pre-reaction hollow shaft of this utility model. Figure 5 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0014] The following are the annotations in the diagram: 1. Purification processing tank; 2. Support frame; 3. Liquid pump; 4. Vibration motor; 5. Raw material tank; 6. Fixed base plate; 7. Solid-liquid self-separating stirring mechanism; 701. Same diameter spiral winding component; 702. Solid-liquid separation screen cylinder; 703. Inverted conical solid sedimentation tank; 704. Pre-reaction hollow shaft; 705. Auxiliary stirring rod; 706. Scraper; 707. Variable diameter spiral tube; 708. Liquid guide channel; 709. Drive arm; 8. Solid material discharge valve; 9. Drive housing; 10. Driven gear; 11. Drive gear; 12. Servo motor; 13. Guide trough; 14. Feeding pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 The present invention provides a lithium sulfate solution purification device, which includes a purification processing tank 1.

[0017] Reference Figures 1-4 A drive housing 9 is installed on the top of the purification processing tank 1, and a solid-liquid self-separation stirring mechanism 7 is connected between the drive housing 9 and the purification processing tank 1. The solid-liquid self-separation stirring mechanism 7 includes a solid-liquid separation screen cylinder 702 rotatably connected inside the purification processing tank 1, and an inverted conical solid sedimentation tank 703 is fixed at the bottom of the solid-liquid separation screen cylinder 702. The inner side wall of the purification processing tank 1 is provided with a spiral coiled part 701 of the same diameter that matches the solid-liquid separation screen cylinder 702. The top of the solid-liquid separation screen cylinder 702 is fixed with a pre-reaction hollow shaft 704, and a variable diameter spiral tube 707 is fixed inside the pre-reaction hollow shaft 704. A secondary stirring rod 705 is rotatably connected inside the solid-liquid separation screen cylinder 702 at one end of the pre-reaction hollow shaft 704, and a cleaning scraper 706 is provided at one end of the secondary stirring rod 705. Raw material tanks 5 are evenly installed above the purification processing tank 1, and the top of the variable diameter spiral tube 707 is connected to the guide trough 13 through a rotary joint; the vertical center line of the pre-reaction hollow shaft 704 and the vertical center line of the solid-liquid separation screen cylinder 702 are on the same vertical line, and the outer wall of the cleaning scraper 706 and the inner wall of the purification processing tank 1 abut against each other. Inside the drive housing 9, there are sequentially movably connected driven gear 10 and drive gear 11 that match the pre-reaction hollow shaft 704 and the auxiliary stirring rod 705. A servo motor 12 is installed on the drive gear 11. Drive arms 709 are evenly fixed between the driven gear 10 and the solid-liquid separation screen cylinder 702.

[0018] An external power supply is used to purify the raw materials for the reaction. The raw materials enter the variable-diameter spiral tube 707 inside the pre-reaction hollow shaft 704. The gradually changing spiral design extends the residence time of the raw materials during feeding, allowing the crude lithium sulfate solution and the precipitant to mix and pre-react in the tube, initially generating precipitated particles of impurities such as calcium and magnesium. The pre-reacted mixture enters the solid-liquid separation screen cylinder 702 from the bottom end of the pre-reaction hollow shaft 704. The servo motor 12 inside the drive housing 9 drives the drive gear 11 to rotate, which in turn drives the driven gear 10 and the auxiliary stirring rod 705 to rotate. At the same time, the drive arm 709 on the drive gear 11 drives the solid-liquid separation screen cylinder 702 to rotate synchronously, and the auxiliary stirring rod 705 stirs the mixture. The mixture is deeply stirred to ensure that unreacted impurity ions come into full contact with the precipitant, generating larger precipitate particles. The rotation of the solid-liquid separation screen cylinder 702 generates centrifugal force, causing the liquid containing purified lithium sulfate in the mixture to permeate through the screen holes to the outside. It is then guided by the same diameter spiral coil 701 on the inner wall of the purification processing tank 1 to the liquid guide channel 708 for extraction of the separated liquid material. The precipitated impurities are trapped by the screen and, under the action of gravity and centrifugal force, accumulate along the inverted conical solid sedimentation tank 703 for periodic cleaning and collection. At the same time, the cleaning scraper 706 at the end of the auxiliary stirring rod 705 rotates with the rod and comes into contact with the inner wall of the purification processing tank 1 to scrape off the attached residual precipitate and prevent scaling.

[0019] Reference Figure 1 and Figure 5 A liquid guiding channel 708 is provided on the side of the spiral winding part 701 of the same diameter near the solid-liquid separation screen cylinder 702, and a liquid pump 3 connected to the bottom end of the liquid guiding channel 708 is installed on the outside of the purification processing tank 1. A support frame 2 is fixed to the outer wall of the purification processing tank 1, and a fixed base plate 6 matching the raw material tank 5 is installed on the top of the support frame 2; the raw material tank 5 and the fixed base plate 6 are connected by screws to form a disassembly and installation structure, and a vibration motor 4 matching the raw material tank 5 is installed on the fixed base plate 6. The material guide trough 13 is fixed on the support frame 2, and the material guide trough 13 and the bottom of the raw material tank 5 are connected by a feeding pipe 14. The bottom of the purification processing tank 1 is equipped with a solid material discharge valve 8, and a rotary joint is movably connected between the solid material discharge valve 8 and the inverted conical solid material sedimentation tank 703.

[0020] An external power supply is used. The raw material tank 5 is detachably connected to the fixed base plate 6 by screws. Users can replace different raw material tanks 5, or replenish the raw materials by opening the top sealing plug of the raw material tank 5. During the purification process, the valve on the feeding pipe 14 is opened and the vibration motor 4 is started at the same time to ensure that the raw materials are fed smoothly under the action of gravity. The crude lithium sulfate solution and precipitant raw materials used in the purification reaction enter the guide tank 13 through the feeding pipe 14, and then are introduced into the variable diameter spiral tube 707 inside the pre-reaction hollow shaft 704 through the rotary joint to achieve pre-reaction. Then, they enter the solid-liquid separation screen cylinder 702 to complete the separation. Finally, the liquid that has been purified and separated is guided to the liquid guide channel 708 by the same diameter spiral coil 701 on the inner wall of the purification processing tank 1. It can be automatically extracted and collected in real time by the liquid pump 3. The precipitated impurities intercepted by the screen are collected along the inverted conical solid sedimentation tank 703, which is convenient for users to discharge and collect through the solid material discharge valve 8 during each raw material replenishment.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lithium sulfate solution purification apparatus, comprising a purification processing tank (1); Its features are: The top of the purification processing tank (1) is equipped with a drive housing (9), and a solid-liquid self-separation stirring mechanism (7) is connected between the drive housing (9) and the purification processing tank (1). The solid-liquid self-separation stirring mechanism (7) includes a solid-liquid separation screen cylinder (702) rotatably connected inside the purification processing tank (1), and an inverted conical solid sedimentation tank (703) is fixed at the bottom of the solid-liquid separation screen cylinder (702). The inner side wall of the purification processing tank (1) is provided with a spiral coil (701) of the same diameter that matches the solid-liquid separation screen cylinder (702). The top of the solid-liquid separation screen cylinder (702) is fixed with a pre-reaction hollow shaft (704), and a variable diameter spiral tube (707) is fixed inside the pre-reaction hollow shaft (704). A secondary stirring rod (705) is rotatably connected inside the solid-liquid separation screen cylinder (702) at one end of the pre-reaction hollow shaft (704), and a cleaning scraper (706) is provided at one end of the secondary stirring rod (705). The purification processing tank (1) is uniformly equipped with raw material tanks (5) above it, and the top of the variable diameter spiral tube (707) is connected to the guide trough (13) through a rotary joint.

2. The lithium sulfate solution purification device according to claim 1, characterized in that: The same diameter spiral coil (701) is provided with a liquid guiding channel (708) on the side near the solid-liquid separation screen cylinder (702), and the purification processing tank (1) is equipped with a liquid pump (3) connected to the bottom end of the liquid guiding channel (708).

3. The lithium sulfate solution purification device according to claim 1, characterized in that: The vertical center line of the pre-reaction hollow shaft (704) and the vertical center line of the solid-liquid separation screen cylinder (702) are on the same vertical line, and the outer wall of the cleaning scraper (706) and the inner wall of the purification processing tank (1) are in contact with each other.

4. The lithium sulfate solution purification apparatus according to claim 1, characterized in that: The outer wall of the purification processing tank (1) is fixed with a support frame (2), and the top of the support frame (2) is equipped with a fixed base plate (6) that matches the raw material tank (5).

5. The lithium sulfate solution purification apparatus according to claim 4, characterized in that: The raw material tank (5) and the fixed base plate (6) are connected by screws to form a disassembly and installation structure. The fixed base plate (6) is equipped with a vibration motor (4) that matches the raw material tank (5).

6. The lithium sulfate solution purification apparatus according to claim 1, characterized in that: The material guide trough (13) is fixed on the support frame (2), and a feeding pipe (14) is connected between the material guide trough (13) and the bottom of the raw material tank (5).

7. The lithium sulfate solution purification apparatus according to claim 1, characterized in that: The drive housing (9) is sequentially connected to a driven gear (10) and a driving gear (11) that match the pre-reaction hollow shaft (704) and the auxiliary stirring rod (705). A servo motor (12) is installed on the driving gear (11). A drive arm (709) is uniformly fixed between the driven gear (10) and the solid-liquid separation screen cylinder (702).

8. The lithium sulfate solution purification apparatus according to claim 1, characterized in that: The bottom of the purification processing tank (1) is equipped with a solid material discharge valve (8), and a rotary joint is movably connected between the solid material discharge valve (8) and the inverted conical solid material sedimentation tank (703).

Images