Lithium carbonate preparation raw material precision metering and mixing device

Abstract

The utility model relates to the field of lithium carbonate preparation, especially a raw material accurate metering mixing equipment for lithium carbonate preparation, the utility model provides a raw material accurate metering mixing equipment for lithium carbonate preparation, including frame body, controller, stop liquid valve, mixing bucket, hopper, conveying propeller and first drive motor etc., the frame body one side is installed with the controller, the frame body other side is fixed with stop liquid valve, the frame body upper portion is fixed with mixing bucket, and the mixing bucket top is fixed with hopper, and the hopper middle part is rotatably connected with conveying propeller, the utility model discloses through the cooperation of weighing disc, first drive motor and controller, can realize the accurate weighing and conveying of spodumene powder, ensure that the proportioning of mixed raw materials is accurate, improve the stability of product quality.

Description

Technical Field

[0001] This utility model relates to the field of lithium carbonate preparation, and in particular to a precise metering and mixing device for raw materials used in lithium carbonate preparation. Background Technology

[0002] Lithium carbonate is an important inorganic compound. As the most basic lithium compound, it has a wide range of applications: in industry, it is used as a raw material in the manufacture of glass, ceramics, enamel, and ferrites; in the new energy field, it is a key raw material for the production of cathode materials for lithium-ion batteries; and in the medical field, it is used to treat mental illnesses. With the rapid development of the global new energy industry, lithium carbonate has been listed as a strategic mineral resource by many countries, and its demand and price are both on the rise.

[0003] In the lithium carbonate production process, accurate metering and uniform mixing of raw materials are crucial for ensuring product quality. However, existing equipment has some mechanical structural defects. Traditional equipment typically uses a fixed screw conveyor and a simple mixing tank. Raw materials are manually added to the mixing tank before the machine is started to mix them. However, this method is prone to large proportioning errors, and when processing powdery raw materials such as spodumene powder, problems such as silo clumping, material jamming, and poor material discharge frequently occur. These defects directly affect the accuracy of batching and the uniformity of mixing, severely restricting the improvement of production efficiency and product quality.

[0004] Therefore, a precise metering and mixing device for raw materials used in lithium carbonate production is needed to solve the aforementioned technical problems. Utility Model Content

[0005] To overcome the shortcomings of traditional lithium carbonate preparation mixing devices, such as inaccurate proportioning and poor material feeding, the technical problem is to provide a precise metering and mixing device for raw materials in lithium carbonate preparation.

[0006] A precise metering and mixing device for lithium carbonate preparation includes a frame, a controller, a stop valve, a mixing tank, a hopper, a conveying screw, a first drive motor, a weighing pan, a cleaning tank, a second drive motor, a stirring paddle, a stirring wheel, a first gear, and a second gear. The controller is mounted on one side of the frame, and the stop valve is fixedly connected to the other side. The mixing tank is fixedly connected to the upper part of the frame, and the hopper is fixedly connected to the top of the mixing tank. A conveying screw is rotatably connected to the middle of the hopper. The first drive motor is mounted on one side of the hopper and is electrically connected to the controller. A weighing pan is connected to the output shaft of the first drive motor and is rotatably connected to the opening of the hopper. A cleaning tank is fixedly connected to the bottom of the mixing tank, and the second drive motor is mounted at the bottom of the cleaning tank and is electrically connected to the controller. A stirring paddle is fixedly connected to the output shaft of the second drive motor, passing through the middle of the mixing tank and the cleaning tank. A stirring wheel is also fixedly connected to the bottom of the stirring paddle. The first gear is fixedly connected to the top of the stirring paddle, and the second gear is fixedly connected to the bottom of the conveying screw. The first gear and the second gear mesh with each other.

[0007] As a further preferred option, it also includes a scraper, which is fixed to the stirring paddle. The scraper is in close contact with the inner wall of the mixing tank, and the scraper is made of silicone material, which is not likely to damage the inner wall of the mixing tank.

[0008] As a further preferred option, it also includes a liquid pump and a flow meter. The liquid pump is fixedly connected to one side of the frame and is electrically connected to the controller. The flow meter is also installed on the side wall of the frame and is fixedly connected to the liquid pump.

[0009] As a further preferred embodiment, it also includes a base plate and electric push rods. The base plate is slidably connected to the bottom of the mixing tank, and two electric push rods are installed at the bottom of the washing tank. The electric push rods are electrically connected to the controller, and the telescopic rods of the electric push rods are fixedly connected to the base plate.

[0010] As a further preferred option, a sealing gasket is placed around the base plate.

[0011] As a further preferred option, it also includes electric heating elements. Four electric heating elements are installed at the bottom of the frame, symmetrically distributed front and back, with two at the front and two at the back. The electric heating elements are electrically connected to the controller.

[0012] The beneficial effects of this utility model are as follows: 1. By coordinating the weighing pan, the first drive motor, and the controller, this utility model can achieve precise weighing and conveying of spodumene powder, ensuring accurate proportioning of mixed raw materials and improving the stability of product quality. Simultaneously, the rotation of the conveying propeller prevents blockage at the discharge port, further ensuring smooth material conveying.

[0013] 2. This utility model solves the problem of lithium hydroxide powder adhering to the wall after reaction by driving the scraper to rotate while mixing the raw materials with the stirring paddle, thereby reducing the waste of raw materials, improving the utilization rate of raw materials, and ensuring the full progress of the mixing reaction. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the mixing tank, feeding hopper, and first drive motor of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the weighing pan, cleaning tank, and second drive motor of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the scraper, stirring wheel, and first gear of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, including the stop valve, cleaning tank, and electric heating tube. Wherein: 1. Frame; 101. Controller; 2. Stop valve; 3. Mixing tank; 301. Base plate; 4. Feed hopper; 401. Conveying propeller; 5. Pump; 501. Flow meter; 6. First drive motor; 7. Weighing pan; 8. Cleaning tank; 9. Second drive motor; 10. Stirring paddle; 1001. Scraper; 1002. Stirring wheel; 11. First gear; 1101. Second gear; 12. Electric push rod; 13. Electric heating tube. Detailed Implementation

[0019] Example: A precise metering and mixing device for raw materials used in lithium carbonate preparation, such as... Figures 1-5As shown, the system includes a frame 1, a controller 101, a check valve 2, a mixing tank 3, a hopper 4, a conveying screw 401, a first drive motor 6, a weighing pan 7, a cleaning tank 8, a second drive motor 9, a stirring paddle 10, a stirring wheel 1002, a first gear 11, and a second gear 1101. The controller 101 is bolted to the right side of the frame 1. The check valve 2 is welded to the front of the frame 1. The mixing tank 3 is fixed to the upper part of the frame 1. The hopper 4 is welded to the top of the mixing tank 3. The conveying screw 401 is rotatably connected to the middle of the hopper 4. The diameter of the conveying screw 401 matches the discharge port diameter of the hopper 4, preventing spodumene powder from falling directly into the mixing tank 3. The first drive motor 6 is installed on the left side of the hopper 4. Motor 6 is electrically connected to controller 101. Weighing pan 7 is connected to the output shaft of the first drive motor 6. Weighing pan 7 is rotatably connected to the opening of hopper 4. Washing tank 8 is welded to the bottom of mixing tank 3. Second drive motor 9 is welded to the bottom of washing tank 8. Second drive motor 9 is electrically connected to controller 101. Agitator 10 is welded to the output shaft of second drive motor 9. Agitator 10 passes through the middle of mixing tank 3 and washing tank 8. Agitator wheel 1002 is also fixed to the bottom of agitator 10. The blades on agitator wheel 1002 are turbine-shaped. A first gear 11 is welded to the top of agitator 10. A second gear 1101 is welded to the bottom of conveying screw 401. The first gear 11 and the second gear 1101 mesh with each other.

[0020] like Figure 5 As shown, it also includes electric heating tubes 13. Four electric heating tubes 13 are arranged at the bottom of the frame 1, which are symmetrically distributed front and back, with two at the front and two at the back. The electric heating tubes 13 are electrically connected to the controller 101.

[0021] When using this device, the user must first place it on a flat surface to ensure that it will not tilt or move due to uneven ground. The heating element 13 is activated via the controller 101, heating the mixing tank 3 to a specified temperature, providing suitable temperature conditions for the subsequent mixing reaction.

[0022] Next, spodumene powder is added to the weighing pan 7. Once the required weight is reached, the weighing pan 7 sends a signal to the controller 101. Upon receiving the signal, the controller 101 starts the first drive motor 6. The output shaft of the first drive motor 6 drives the weighing pan 7 to rotate clockwise, pouring the spodumene powder into the feeding hopper 4. At this time, the second drive motor 9 is started. The output shaft of the second drive motor 9 drives the stirring paddle 10 to rotate. When the stirring paddle 10 rotates, the first gear 11 connected to it rotates accordingly, which in turn drives the second gear 1101 meshing with it to rotate, thereby causing the conveying screw 401 to rotate continuously, ensuring that the spodumene powder smoothly enters the mixing tank 3 without clogging the feeding port.

[0023] like Figure 1 As shown, it also includes a liquid pump 5 and a flow meter 501. The liquid pump 5 is connected to the right side of the frame 1 by bolts. The liquid pump 5 is electrically connected to the controller 101. The flow meter 501 is connected to the right side of the frame 1 by bolts. The flow meter 501 is fixedly connected to the liquid pump 5.

[0024] While adding spodumene powder, the liquid pump 5 is started by the controller 101. The liquid pump 5 draws brine and adds it to the mixing tank 3. The flow meter 501 can accurately calculate the amount of brine used, thereby achieving precise mixing of spodumene powder and brine.

[0025] like Figure 3 and Figure 4 As shown, it also includes a scraper 1001. The scraper 1001 is fixed on the stirring paddle 10. The scraper 1001 is in close contact with the inner wall of the mixing tank 3. The scraper 1001 is made of silicone material, which is not easy to damage the inner wall of the mixing tank 3.

[0026] After the raw materials enter the mixing tank 3, they are mixed evenly under the continuous rotation of the stirring paddle 10. During the mixing process of brine and spodumene powder, some of the generated lithium hydroxide powder may stick to the inner wall of the mixing tank 3. While the stirring paddle 10 is rotating, the scraper 1001 will scrape the lithium hydroxide powder stuck to the tank wall and make it gather at the bottom plate 301 to avoid waste of raw materials and ensure that the mixing reaction is fully carried out.

[0027] like Figure 3 and Figure 4 As shown, it also includes a base plate 301 and an electric push rod 12. The bottom of the mixing tank 3 is slidably connected to the base plate 301, and a sealing gasket is covered around the base plate 301 to prevent leakage from the mixing tank. Two electric push rods 12 are installed at the bottom of the cleaning tank 8. The electric push rods 12 are electrically connected to the controller 101, and the telescopic rods of the electric push rods 12 are welded to the base plate 301.

[0028] After mixing, the generated lithium hydroxide powder accumulates on the bottom plate 301. At this time, the controller 101 activates two electric push rods 12, whose extension rods retract, causing the bottom plate 301 to move downwards, allowing the lithium hydroxide powder to smoothly enter the cleaning tank 8. Water is injected into the cleaning tank 8 through the water inlet on the frame 1, and the second drive motor 9 is activated again. The output shaft of the second drive motor 9 not only drives the stirring paddle 10 to rotate but also drives the stirring wheel 1002 to rotate. The spiral blades of the stirring wheel 1002 will gather the lithium hydroxide solution towards the center for repeated concentrated cleaning. After cleaning, the stop valve 2 can be opened to collect the solution for subsequent lithium carbonate preparation.

[0029] After the device is used, the entire operation process can be completed by stopping the heating element 13, the first drive motor 6, the second drive motor 9 and the liquid pump 5 in sequence through the controller 101.

Claims

1. A precise metering and mixing device for raw materials used in the preparation of lithium carbonate, characterized in that: The system includes a frame (1), a controller (101), a stop valve (2), a mixing tank (3), a hopper (4), a conveying screw (401), a first drive motor (6), a weighing pan (7), a cleaning tank (8), a second drive motor (9), a stirring paddle (10), a stirring wheel (1002), a first gear (11), and a second gear (1101). The controller (101) is installed on one side of the frame (1), and the stop valve (2) is fixed to the other side of the frame (1). The mixing tank (3) is fixed to the upper part of the frame (1), and the hopper (4) is fixed to the top of the mixing tank (3). The conveying screw (401) is rotatably connected to the middle of the hopper (4). The first drive motor (6) is installed on one side of the hopper (4). The first drive motor (6) is connected to the controller (101). Electrically connected, a weighing pan (7) is connected to the output shaft of the first drive motor (6), the weighing pan (7) is rotatably connected to the opening of the hopper (4), a washing tank (8) is fixed to the bottom of the mixing tank (3), a second drive motor (9) is installed at the bottom of the washing tank (8), the second drive motor (9) is electrically connected to the controller (101), a stirring paddle (10) is fixed to the output shaft of the second drive motor (9), the stirring paddle (10) passes through the middle of the mixing tank (3) and the washing tank (8), a stirring wheel (1002) is also fixed to the bottom of the stirring paddle (10), a first gear (11) is fixed to the top of the stirring paddle (10), a second gear (1101) is fixed to the bottom of the conveying screw (401), the first gear (11) and the second gear (1101) mesh with each other.

2. The precise metering and mixing equipment for lithium carbonate preparation according to claim 1, characterized in that: It also includes a scraper (1001), which is fixed on the stirring paddle (10). The scraper (1001) is in close contact with the inner wall of the mixing tank (3), and the scraper (1001) is made of silicone.

3. A precise metering and mixing device for raw materials in lithium carbonate preparation according to claim 2, characterized in that: It also includes a liquid pump (5) and a flow meter (501). The liquid pump (5) is fixedly connected to one side of the frame (1). The liquid pump (5) is electrically connected to the controller (101). The flow meter (501) is also installed on the side wall of the frame (1). The flow meter (501) is fixedly connected to the liquid pump (5).

4. A precise metering and mixing device for raw materials in lithium carbonate preparation according to claim 3, characterized in that: It also includes a base plate (301) and an electric push rod (12). The bottom of the mixing tank (3) is slidably connected to the base plate (301). The bottom of the cleaning tank (8) is equipped with two electric push rods (12). The electric push rods (12) are electrically connected to the controller (101). The telescopic rods of the electric push rods (12) are fixedly connected to the base plate (301).

5. A precise metering and mixing device for raw materials in lithium carbonate preparation according to claim 4, characterized in that: The base plate (301) is surrounded by a sealing gasket.

6. A precise metering and mixing device for raw materials in lithium carbonate preparation according to claim 5, characterized in that: It also includes electric heating tubes (13). Four electric heating tubes (13) are provided at the bottom of the frame (1), which are symmetrically distributed in front and back. Two are provided in front and two are provided in back. The electric heating tubes (13) are electrically connected to the controller (101).

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