Multi-layer sieve bend

Abstract

The invention discloses a multi-layer sieve bend, which comprises the sieve bends formed by sieve frames and sieve surfaces, and a feed device, the number of the sieve bends is several, the sieve bends are stacked up and down to form a plurality of layers, predetermined space is formed between two adjacent layers, the feed device comprises a plurality of feed openings with the number the same as that of the sieve bends, the feed opening of each sieve bend is correspondingly connected with one feed opening of the feed device for receiving the material fed by the feed device, and the separated material is respectively discharged by a plus sieve discharge opening and a minus sieve discharge opening. The invention has a sieve surface area increased by at least 50% compared with that of a common sieve bend with the same floor area, and has a processing capacity increased by at least 1.5 times, and synchronously, sieving efficiency is greatly improved, the service life of the sieve surface is greatly prolonged, and the installation and replacement are convenient.

Description

technical field [0001] The invention relates to a device for classifying slurry according to particle size by using comprehensive force fields such as gravity, centrifugal force and fluid force, in particular to a curved sieve. Background technique [0002] The idea of ​​the curved screen was first proposed by Cook in 1906. By the 1950s, the curved screen began to be applied in industry. The United States, the former Soviet Union, the Netherlands, Australia and other countries successively applied the curved screen to iron ore, Coal mine, cement and other industries, my country began to design and develop curved screens in the early 1960s, and gradually popularized and applied them in non-ferrous, black, cement, chemical and other industries. At present, the curved screen has become an effective equipment for screening and grading fine-grained slurry, and is widely used in the classification and dehydration of fine-grained slurry in various departments such as mineral process...

AI Technical Summary

Problems solved by technology

[0012]The fourth factor is the opening ratio of the screen surface

[0014]In summary, for the actual production line, the classification efficiency of the curved screen in a certain space is maintained at the current level after all the influencing factors are optimized. In the absence of major technological breakthroughs, we can only achieve a certain balance between various factors, and there will be no greater breakthroughs. Even if a vibration or hitting device is added to the curved screen to reduce the clogging situation, it is still in the existing An improvement on the basis of technology, but the effect is not very obvious

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