Continuous and stable lithium battery negative electrode material horizontal coating granulation equipment

Abstract

The invention provides continuous and stable lithium battery negative electrode material horizontal coating granulation equipment which is characterized in that a kettle body is formed by butt welding of two cylinders through openings, a stirring paddle is arranged on a hollow shaft sleeve, the hollow shaft sleeve and the stirring paddle are arranged in a cavity of the kettle body, and sealing seat bases are arranged around a shaft hole; the end faces between the sealing seat bases are parallel to each other, shaft sealing seats are arranged on the sealing seat bases, the axes between the shaft sealing seats are located on the same straight line, the hollow shaft sleeve is arranged on the main shaft, and the two ends of the main shaft are arranged on the shaft sealing seats. Flanges of two cylinders in a traditional kettle body are omitted, the two cylinders are directly welded to form a whole, materials are prevented from leaking from the joint of the two cylinders, concentricity of the shaft sealing seats at the two ends is guaranteed, shaft sealing is more durable, the materials are prevented from leaking from the joints of the shaft sealing seats and the kettle body, and the overall sealing performance of equipment is greatly improved. The continuous production time of the equipment is greatly prolonged, and the equipment can produce more efficiently.

Description

technical field [0001] The invention relates to the technical field of lithium battery production equipment, in particular to a continuous and stable horizontal coating and granulation equipment for negative electrode materials of lithium batteries. Background technique [0002] At present, after the lithium battery negative electrode material is coated and granulated, it is necessary to cool the material from 650 degrees Celsius to about 40 degrees Celsius and transport it to the next screening process or directly pack it in tons of bags. The cooling equipment currently on the market includes vertical stirring and cooling. For horizontal mixing cooling equipment, since the vertical cooling equipment requires about 2 meters higher space height for the overall installation than the horizontal cooling equipment, so some workshops with insufficient plant height, the demand side will prefer to buy a horizontal cooling machine . The traditional horizontal cooler is a horizontal ...

AI Technical Summary

Problems solved by technology

The above two features have very obvious defects, such as feature 1, horizontal mixing equipment, since the stirring shaft extends outward through both sides of the cylinder, shaft seals must be made at both ends of the cylinder, so the two ends are fixed The concentricity requirements of the shaft seal are very high, which not only requires high processing requirements, but also requires high installation requirements for later installation and splicing, and because the material temperature can reach 650 ° C or higher when the material enters the cooling equipment, this It will cause thermal deformation of the connecting flange of the cylinder, which will lead to a decrease in the sealing performance of the connecting flange and material leakage. Since the material is high-temperature fine powder, it will not only cause powder particles to float in the entire production environment, Serious pollution is caused, and high-temperature materials are likely to cause burns to operators or cause fire accidents. The second feature is that the mixing system is integrated. First, the shaft is welded with the reinforcing crosspiece and the ribbon after the shaft is processed. Welding is easy to cause shaft damage. Thermal deformation. During the rotation of the stirring system, the shaft seal will be easily worn and cause material leakage. The second is to weld the shaft, reinforcing crosspiece and ribbon before processing. When this is applied to large cooling equipment, the stirring system is too The meeting made the processing too difficult, so that the concentricity of the shaft seals at both ends could not be guaranteed, and the cost increased. As a result, there was no good solution to the non-concentricity of the shaft seals at both ends, which caused shaft seal wear and material leakage during rotation. the disadvantages of

The above disadvantages are not only difficult to maintain at the production site, but also cause the equipment to be used only intermittently, and the production efficiency cannot be highly efficient.

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