A grading device for lithium carbonate production and processing

Abstract

This utility model provides a grading device for lithium carbonate production and processing, relating to the technical field of lithium carbonate production equipment. It includes a grading pyrolysis cylinder, with a crushing and screening mechanism arranged below, inside, and above the cylinder. The crushing and screening mechanism includes a mounting base plate positioned below the grading pyrolysis cylinder. A drive motor is fixedly connected to the upper surface of the mounting base plate, and a rotating rod is fixedly connected to the output end of the drive motor. This grading device for lithium carbonate production and processing utilizes a gearbox fixed inside the conveying hopper to drive the rotating rod at a slower speed, conveying the material to a high-speed rotating shaft. This allows the high-speed rotating shaft to drive cutting and crushing blades to cut and crush large lithium carbonate particles within the screening and filtering cylinder held in the conveying hopper. It also heats the interior of the crushed small lithium carbonate particles, thereby improving the processing efficiency of the grading device.

Description

Technical Field

[0001] This utility model relates to a grading device, specifically a grading device for lithium carbonate production and processing, and belongs to the technical field of lithium carbonate production equipment. Background Technology

[0002] Lithium carbonate is an inorganic compound, a colorless monoclinic crystal, slightly soluble in water and dilute acids, insoluble in ethanol and acetone. Its thermal stability is lower than that of carbonates of other elements in the same group in the periodic table. It does not deliquesce in air and can be obtained by adding sodium carbonate to lithium sulfate or lithium oxide solution. Lithium carbonate can be divided into industrial grade lithium carbonate and battery grade lithium carbonate according to the purity and impurity content of the product. In the production and purification process, lithium carbonate needs to be graded and pyrolyzed using a grading device.

[0003] A graded pyrolysis device for lithium carbonate production, disclosed in Chinese Patent Application Publication CN220900422U, includes a pyrolysis tank and a power guiding mechanism. The power guiding mechanism is rotatably connected inside the pyrolysis tank. The pyrolysis tank includes a tank body, with an isolation inner tube fixedly connected to the center of the tank body. The power guiding mechanism includes a drive motor, a screw, and a mixing screw. This technical solution performs three-stage pyrolysis of the raw materials, thereby ensuring the pyrolysis effect and product quality. Compared with current pyrolysis methods, the spiral conveying method, which disperses the raw materials during conveying, results in a shorter overall pyrolysis time and higher pyrolysis efficiency. However, this technical solution directly conveys the required raw materials from the inlet into the pyrolysis tank for pyrolysis. When the raw materials have high moisture content, the graded equipment cannot pre-crush and dry them, causing the raw materials to adhere to the inner wall of the pyrolysis tank. This prevents the graded equipment from conveying, turning, and pyrolyzing the raw materials, thus reducing the processing efficiency of the graded equipment.

[0004] Therefore, a grading device for lithium carbonate production and processing is proposed here. Utility Model Content

[0005] This invention proposes a grading device for lithium carbonate production and processing to solve the problem in the prior art where raw materials are easily adsorbed onto the inner wall of the pyrolysis tank.

[0006] This utility model is achieved through the following technical solution: a grading device for lithium carbonate production and processing, including a grading pyrolysis cylinder, wherein a crushing and screening mechanism is provided below the grading pyrolysis cylinder, inside the grading pyrolysis cylinder and above the grading pyrolysis cylinder.

[0007] The crushing and screening mechanism includes a mounting base plate positioned below a grading pyrolysis cylinder. A drive motor is fixedly connected to the upper surface of the mounting base plate, and a rotating rod is fixedly connected to the output end of the drive motor. A conveying hopper is fixedly connected to the upper surface of the grading pyrolysis cylinder. The top end of the rotating rod penetrates the grading pyrolysis cylinder and extends into the interior of the conveying hopper. A gearbox is fixedly connected to the inner wall of the conveying hopper. The top end of the rotating rod is fixedly connected to the input end of the gearbox. A high-speed rotating shaft is fixedly connected to the output end of the gearbox. Cutting and crushing blades arranged at equal intervals are fixedly connected to the outer surface of the high-speed rotating shaft. A retaining ring is fixedly connected to the inner wall of the conveying hopper. A screening and filtering cylinder is slidably connected inside the conveying hopper. The bottom surface of the screening and filtering cylinder contacts the upper surface of the retaining ring. The high-speed rotating shaft penetrates the screening and filtering cylinder and extends into the interior of the screening and filtering cylinder.

[0008] A vibration drying assembly is installed above the grading pyrolysis cylinder, and a conveying and turning assembly is installed inside the grading pyrolysis cylinder.

[0009] The vibrating drying assembly includes a fixed limiting ring, the inner wall of which is fixedly connected to the outer surface of a high-speed rotating shaft. The bottom surface of the screening and filtering cylinder is fixedly connected to a vibrating motor arranged in a circular pattern at equal intervals. The inner wall of the screening and filtering cylinder is fixedly connected to an infrared lamp tube arranged in a circular pattern at equal intervals. The outer surface of the screening and filtering cylinder is fixedly connected to a battery arranged in a circular pattern at equal intervals. Several infrared lamp tubes are electrically connected to several batteries through wires.

[0010] The conveying and turning assembly includes scrapers arranged in a circular pattern at equal intervals. The sides of several scrapers that are close to each other are fixedly connected to the outer surface of the rotating rod, and the bottom surface of each scraper is in contact with the inner bottom wall of the grading pyrolysis cylinder.

[0011] A spiral fan blade is fixedly connected to the outer surface of several rotating rods, and a conveying cylinder is fixedly connected to the inner wall of the grading pyrolysis cylinder. The spiral fan blade is rotatably connected to the inside of the conveying cylinder.

[0012] The outer surface of the rotating rod is fixedly connected to a dispersing moving plate arranged in a circular pattern at equal intervals, and the bottom surface of the dispersing moving plate is in contact with the upper surface of the conveying cylinder.

[0013] The bottom surface of the grading pyrolysis cylinder is fixedly connected to two sets of support legs. The bottom end of each set of support legs is fixedly connected to a support chassis. The outer surface of each support chassis is fixedly connected to the outer surface of the mounting base plate.

[0014] This utility model provides a grading device for lithium carbonate production and processing, which has the following beneficial effects:

[0015] 1. This grading equipment for lithium carbonate production and processing utilizes a gearbox fixed inside the conveying hopper to transport the slower-rotating rod driven by the drive motor to a faster-rotating high-speed shaft. The high-speed shaft then drives cutting and crushing blades to cut and crush large lithium carbonate particles in the screening and filtering cylinder clamped inside the conveying hopper. This process also heats the interior of the crushed small lithium carbonate particles, thereby improving the processing efficiency of the grading equipment.

[0016] 2. This grading equipment for lithium carbonate production and processing utilizes a vibrating motor fixed under the screening and filtering cylinder to cause the screening and filtering cylinder to vibrate under the limitation of a fixed limiting ring and a retaining ring. This facilitates the screening of the lithium carbonate raw material into the grading pyrolysis cylinder for heating, while large particles of lithium carbonate raw material continue to be crushed within the screening and filtering cylinder. Power is supplied to the infrared lamps via a battery, allowing the infrared lamps to be used to dry the lithium carbonate raw material within the screening and filtering cylinder. This reduces the problem of raw material adsorbing onto the inner wall of the pyrolysis tank, preventing it from being stirred and pyrolyzed, and further improves the processing efficiency of the grading equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the screening filter cylinder of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the conveying cylinder of this utility model;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of the conveying bucket of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the spiral fan blade of this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Staged pyrolysis cylinder;

[0023] 2. Crushing and screening mechanism; 201. Mounting base plate; 202. Drive motor; 203. Gearbox; 204. High-speed rotating shaft; 205. Cutting and crushing blade; 206. Conveying bucket; 207. Screening and filtering cylinder; 208. Retaining ring; 209. Rotating rod;

[0024] 3. Vibration drying assembly; 301. Fixed limit ring; 302. Vibration motor; 303. Infrared lamp; 304. Battery;

[0025] 4. Conveying and turning assembly; 401. Conveying cylinder; 402. Scraper; 403. Spiral fan blade; 404. Dispersing and moving plate;

[0026] 5. Support legs; 6. Support chassis. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0028] Please see Figures 1-4 This utility model provides a grading device for lithium carbonate production and processing, including a grading pyrolysis cylinder 1, and a crushing and screening mechanism 2 is provided below the grading pyrolysis cylinder 1, inside the grading pyrolysis cylinder 1 and above the grading pyrolysis cylinder 1.

[0029] Please refer to this carefully. Figure 1 and Figure 2 The crushing and screening mechanism 2 includes a mounting base plate 201, which is located below the grading pyrolysis cylinder 1. A drive motor 202 is fixedly connected to the upper surface of the mounting base plate 201. Two sets of support legs 5 are fixedly connected to the bottom surface of the grading pyrolysis cylinder 1. A support base plate 6 is fixedly connected to the bottom end of each set of support legs 5. The outer surface of each support base plate 6 is fixedly connected to the outer surface of the mounting base plate 201. The two sets of support legs 5 and the support base plate 6 are used to support the grading pyrolysis cylinder 1. The drive motor 202 can also be installed and fixed directly below the grading pyrolysis cylinder 1 in conjunction with the mounting base plate 201.

[0030] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 4 A rotating rod 209 is fixedly connected to the output end of the drive motor 202. A conveying bucket 206 is fixedly connected to the upper surface of the grading pyrolysis cylinder 1. The top end of the rotating rod 209 passes through the grading pyrolysis cylinder 1 and extends into the interior of the conveying bucket 206. A gearbox 203 is fixedly connected to the inner wall of the conveying bucket 206. The gearbox 203 is an accessory used to change the speed and torque from the engine and can fix or change the transmission ratio of the output shaft and the input shaft. The top end of the rotating rod 209 is fixedly connected to the input end of the gearbox 203. A high-speed rotating shaft 204 is fixedly connected to the output end of the gearbox 203. Cutting and crushing blades 205 arranged at equal intervals are fixedly connected to the outer surface of the high-speed rotating shaft 204. A retaining ring 208 is fixedly connected to the inner wall of the conveying bucket 206. A screening and filtering cylinder 207 is slidably connected inside the conveying bucket 206. The bottom surface of the screening and filtering cylinder 207 is in contact with the upper surface of the retaining ring 208. The high-speed rotating shaft 204 passes through the screening and filtering cylinder 207 and extends into the interior of the screening and filtering cylinder 207.

[0031] Please refer to this carefully. Figure 1 and Figure 3 A vibrating drying assembly 3 is installed above the grading pyrolysis cylinder 1. A conveying and turning assembly 4 is installed inside the grading pyrolysis cylinder 1. The vibrating drying assembly 3 includes a fixed limiting ring 301, the inner wall of which is fixedly connected to the outer surface of the high-speed rotating shaft 204. A vibrating motor 302, arranged in equal-distance circular patterns, is fixedly connected to the bottom surface of the screening and filtering cylinder 207. The vibrating motor 302 has an adjustable eccentric block installed at each end of the rotor shaft, and utilizes the centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks to obtain the excitation force. The model of the vibrating motor 302 is JZO-50-6. Infrared rays arranged in equal-distance circular patterns are fixedly connected to the inner wall of the screening and filtering cylinder 207. The infrared lamp 303 is a lamp in which a tungsten filament is inserted into a gas-filled quartz tube. The tungsten filament heats up under the action of AC voltage, which in turn heats the gas in the quartz tube, thereby producing infrared radiation. The model of the infrared lamp 303 is QIH240-2000 / S2. The outer surface of the screening filter cylinder 207 is fixedly connected with batteries 304 arranged in a circular pattern at equal intervals. Several infrared lamps 303 are electrically connected to several batteries 304 through wires. The screening filter cylinder 207 is vibrated by the vibration motor 302 to perform screening. The infrared lamps 303 are also used to dry the lithium carbonate raw material inside the screening filter cylinder 207.

[0032] Please refer to this carefully. Figure 4 The conveying and turning assembly 4 includes scraper plates 402 arranged in a circular pattern at equal intervals. The sides of several scraper plates 402 that are close to each other are fixedly connected to the outer surface of the rotating rod 209. The bottom surface of each scraper plate 402 is in contact with the inner bottom wall of the grading pyrolysis cylinder 1. The scraper plates 402 can scrape the lithium carbonate raw material at the bottom of the grading pyrolysis cylinder 1, thereby facilitating the grading pyrolysis processing of the lithium carbonate raw material.

[0033] Please refer to this carefully. Figure 2 and Figure 4 A spiral fan blade 403 is fixedly connected to the outer surface of several rotating rods 209. A conveying cylinder 401 is fixedly connected to the inner wall of the pyrolysis cylinder 1. The spiral fan blade 403 is rotatably connected to the inside of the conveying cylinder 401. By fixing the conveying cylinder 401 to the inner wall of the pyrolysis cylinder 1, the lithium carbonate raw material can fall from the middle to the bottom of the pyrolysis cylinder 1. The spiral fan blade 403 is used to transport the lithium carbonate raw material at the bottom of the pyrolysis cylinder 1 from the bottom to the top, thereby facilitating the tumbling, conveying and pyrolysis of the lithium carbonate raw material inside the pyrolysis cylinder 1.

[0034] Please refer to this carefully. Figure 2 and Figure 4The outer surface of the rotating rod 209 is fixedly connected with a dispersing moving plate 404 arranged in a circular pattern at equal intervals. The bottom surface of the dispersing moving plate 404 is in contact with the upper surface of the conveying cylinder 401. The dispersing moving plate 404 can be used to disperse the lithium carbonate raw material conveyed to the top of the conveying cylinder 401, thereby reducing the problem of uneven pyrolysis caused by the accumulation of lithium carbonate raw material.

[0035] In use, the following steps are taken: First, connect the grading pyrolysis cylinder 1, drive motor 202, and vibration motor 302 to the power supply, and connect the infrared lamp tube 303 to the storage battery 304. When it is necessary to use this grading equipment to grade and pyrolyze lithium carbonate raw materials, first manually install the grading equipment on the horizontal ground of the workshop. The support structure composed of support legs 5 and support chassis 6 can stably support the grading equipment on the horizontal ground. Bolts and other fasteners can be used to stably install and fix the grading equipment in the required position to grade and pyrolyze lithium carbonate raw materials.

[0036] Next, the hinged door on one side of the pyrolysis cylinder 1 is manually closed, and the power supply to the pyrolysis cylinder 1 is controlled to preheat the interior of the pyrolysis cylinder 1. Meanwhile, the lithium carbonate raw material requiring pyrolysis is conveyed from above the screening filter cylinder 207 into its interior via other conveying equipment. At this time, by controlling the power supply to the drive motor 202, vibration motor 302, and infrared lamp 303, the drive motor 202 fixed on the mounting base 201 drives the rotating rod 209 to rotate inside the pyrolysis cylinder 1. Because the rotating rod 209 is in contact with the conveying hopper 206... The fixed input end of the gearbox 203 is connected, and the output end of the gearbox 203 can drive the high-speed rotating shaft 204 to rotate at high speed. The high-speed rotating shaft 204 can drive the cutting and crushing blade 205 to rotate inside the screening and filtering cylinder 207 to cut and crush large particles of lithium carbonate raw material. The vibration motor 302 fixed under the screening and filtering cylinder 207 can make the screening and filtering cylinder 207 vibrate up and down under the limit of the retaining ring 208 and the fixed limiting ring 301, so that the vibrating screening and filtering cylinder 207 can screen the lithium carbonate raw material inside.

[0037] Simultaneously, the infrared lamp 303, powered by the storage battery 304, generates heat to dry the lithium carbonate raw material in the screening filter cylinder 207. This allows the dried lithium carbonate raw material to be screened into the grading pyrolysis cylinder 1, while the damp, large-particle lithium carbonate raw material continues to be crushed and dispersed within the screening filter cylinder 207. The screened lithium carbonate raw material then enters the bottom of the grading pyrolysis cylinder 1 through the conveyor cylinder 401. The rotating rod 209 drives the scraper plate 402 and the spiral... The rotation of the fan blade 403 and the dispersing moving plate 404 can scrape the lithium carbonate raw material with the scraper plate 402, and the spiral fan blade 403 can transport the lithium carbonate raw material at the bottom of the graded pyrolysis cylinder 1 upward along the middle of the conveying cylinder 401. The dispersing moving plate 404 can then disperse the lithium carbonate raw material transported to the upper part and extend it to the outside of the conveying cylinder 401. By repeating the above steps, the lithium carbonate raw material can be turned over and broken, thereby enabling the graded pyrolysis production of lithium carbonate raw material uniformly.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A classification apparatus for lithium carbonate production processing, comprising a classification pyrolysis cylinder (1), characterized in that: A crushing and screening mechanism (2) is provided below the pyrolysis cylinder (1), inside the pyrolysis cylinder (1), and above the pyrolysis cylinder (1). The crushing and screening mechanism (2) includes a mounting base plate (201), which is located below the grading pyrolysis cylinder (1). A drive motor (202) is fixedly connected to the upper surface of the mounting base plate (201). A rotating rod (209) is fixedly connected to the output end of the drive motor (202). A conveying hopper (206) is fixedly connected to the upper surface of the grading pyrolysis cylinder (1). The top end of the rotating rod (209) penetrates the grading pyrolysis cylinder (1) and extends into the interior of the conveying hopper (206). A gearbox (203) is fixedly connected to the inner wall of the conveying hopper (206). The top end is fixedly connected to the input end of the gearbox (203), the output end of the gearbox (203) is fixedly connected to a high-speed rotating shaft (204), the outer surface of the high-speed rotating shaft (204) is fixedly connected to cutting and crushing blades (205) arranged at equal intervals, the inner wall of the conveying bucket (206) is fixedly connected to a retaining ring (208), the inside of the conveying bucket (206) is slidably connected to a screening filter cylinder (207), the bottom surface of the screening filter cylinder (207) is in contact with the upper surface of the retaining ring (208), and the high-speed rotating shaft (204) penetrates through the screening filter cylinder (207) and extends into the inside of the screening filter cylinder (207); A vibration drying assembly (3) is provided above the grading pyrolysis cylinder (1), and a conveying and turning assembly (4) is provided inside the grading pyrolysis cylinder (1).

2. The grading device for lithium carbonate production processing according to claim 1, characterized in that: The vibration drying assembly (3) includes a fixed limiting ring (301), the inner wall of which is fixedly connected to the outer surface of the high-speed rotating shaft (204), the bottom surface of the screening filter cylinder (207) is fixedly connected to a vibration motor (302) arranged in a circular pattern at equal intervals, the inner wall of the screening filter cylinder (207) is fixedly connected to an infrared lamp tube (303) arranged in a circular pattern at equal intervals, the outer surface of the screening filter cylinder (207) is fixedly connected to a battery (304) arranged in a circular pattern at equal intervals, and several infrared lamp tubes (303) are electrically connected to several batteries (304) respectively through wires.

3. The grading device for lithium carbonate production processing according to claim 1, characterized in that: The conveying and turning assembly (4) includes scraper plates (402) arranged in a circular pattern at equal intervals. The side of each scraper plate (402) that is close to each other is fixedly connected to the outer surface of the rotating rod (209). The bottom surface of each scraper plate (402) is in contact with the inner bottom wall of the grading pyrolysis cylinder (1).

4. The grading device for lithium carbonate production processing according to claim 3, characterized in that: A spiral fan blade (403) is fixedly connected to the outer surface of several rotating rods (209), and a conveying cylinder (401) is fixedly connected to the inner wall of the grading pyrolysis cylinder (1). The spiral fan blade (403) is rotatably connected to the inside of the conveying cylinder (401).

5. The grading device for lithium carbonate production processing according to claim 4, characterized in that: The outer surface of the rotating rod (209) is fixedly connected to a dispersing moving plate (404) arranged in a circular pattern at equal intervals, and the bottom surface of the dispersing moving plate (404) is in contact with the upper surface of the conveying cylinder (401).

6. The grading device for lithium carbonate production processing according to claim 1, characterized in that: The bottom surface of the graded pyrolysis cylinder (1) is fixedly connected to two sets of support legs (5), and the bottom end of each set of support legs (5) is fixedly connected to a support chassis (6). The outer surface of each support chassis (6) is fixedly connected to the outer surface of the mounting base plate (201).

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