Mineral sizers is a crushing equipment widely used in the production of aluminum electrolytic anode. With the promotion of the crusher in the market, some users have reported that the discharge control structure of this type of crusher fails after several years of use. The design of the tooth mixing type and the roller tooth structure are discussed, and the improvement idea is put forward, which has certain guidance for the solution of the problem.
Mineral sizers are widely used in the production of aluminum electrolytic anodes. With the development of new technology and new process in china, the requirements of aluminum electrolytic anode production on the crusher are getting higher and higher. At present, there are still problems of low reliability, serious crushing, lax particle size control, large dust and high energy consumption, which can not well meet the needs of the market, causing hundreds of millions of yuan of losses every year. To this end, many powerful large enterprises in our country spend a high price to import a large number of crushers from abroad. Therefore, whether from the perspective of economic benefits, social benefits or environmental benefits, the research and improvement of the existing crusher has a significant user understanding, and the final view content should be composed of opposite teeth between the sides. In order to facilitate the majority of the material with the rotation of the tooth roller from the lower part. The particle size of the broken material is determined by the gap between the two teeth rollers. When the large hard material falls into the crushing chamber and can not be broken, the force of the tooth roller increases, the driven bearing compresses the spring, increases the gap between the two teeth rollers, discharge the material, and then the recovery force of the spring makes the driven tooth roller return to the original position. 2, the working environment of the crusher is harsh, in order to minimize the amount of maintenance, in the design process should make the whole machine in the premise of ensuring the process performance and other indicators as far as possible to simplify the structure. The tooth roller structure is the main working part of mineral sizers, and there are two main types of structure: (1) the core is covered with a map, and the two ends are tightened with a screw. On the number of this hard line structure, this type of assembly, manufacturing and replacement are more convenient, but the bending resistance is poor, the tooth plate is easy to break, the accident rate is high, and the tooth plate and the tooth roll are easy to separate. After analysis and comparison, a new type of tooth roller structure is proposed. The tooth plate is a round structure cylinder made of steel plate, which is connected with the spoke plate by welding. The teeth are machined from high manganese steel. The structure cancels the bolt connection, changes the structure of the tooth plate and the spoke plate, increases the strength of the whole tooth roll, effectively solves the tooth wear and tooth plate fracture, and is easy to install and maintain. 3. The traditional mineral sizers roller teeth are mostly eagle type. However, this type of roller teeth will make the crushing force in the crushing process concentrate on a certain point, the phenomenon of over-crushing is serious, and the product pass rate is low. At the same time, this type of roll teeth wear faster, short service life, large maintenance, to the normal production of aluminum electrolytic residue crushing is very unfavorable. For this reason, long square pyramid can be designed for crushing operation with medium crushing nature. The teeth have uniform crushing force, good crushing effect and wear resistance, which can greatly improve the service life of the roll teeth and improve the production efficiency of aluminum electrolytic residue crushing.