A continuous multi-stage winnowing and grading box, device and system for dry aggregate of concrete

Abstract

The invention discloses a concrete drying aggregate continuous multilevel winnowing classification box which comprises a box body. The interior of the box body is divided into an upper aggregate classification box and a lower aggregate classification box through a partition board, a plurality of classification material ports corresponding to a plurality of discharge ports are distributed in the partition board, and a check valve opened towards the lower winnowing classification box is arranged at each classification material port. The invention further discloses a device and system using the continuous multilevel winnowing classification box. The concrete drying aggregate continuous multilevel winnowing classification box can carry out multilevel winnowing classification on the drying aggregate continuously, can sort the aggregate in a certain particle-sized range in a concentrated mode and removes soil and mountain flour attached to the surface of the aggregate, the aggregate is classified cleanly, the steps of washing and dehydration can be omitted, the technological process is shortened, the cost is reduced, and the quality of finished concrete is improved. The system is achieved in the sealed upper winnowing classification box and the lower winnowing classification box, and no-powder production operation is achieved. The concrete drying aggregate continuous multilevel winnowing classification box can form a circulated type winnowing system, energy consumption is reduced, and finally the purpose that energy is saved, carbon is low and environment is protected is achieved.

Description

technical field [0001] The invention relates to the field of sorting and grading dry solid materials in various industries of industrial production, in particular to a grading box, a device and a system for winnowing and grading dry aggregates of concrete. Background technique [0002] In the field of concrete production, the country vigorously advocates high-quality, high-quality, low-cost concrete production technology, so as to achieve the purpose of saving energy and reducing consumption. Moreover, the state also vigorously encourages environmental protection and energy-saving production, and strives to improve production efficiency, reduce production costs, reduce industrial noise, reduce dust pollution, and improve smog weather. [0003] At present, most industries in the industrial field still use traditional vibrating screens to classify and sort dry materials. Especially in the production of commercial concrete configuration, most of them use vibrating screens to c...

AI Technical Summary

Problems solved by technology

[0007] However, there are still the following problems in the particle size of the aggregates at all levels obtained after the classification of the existing winnowing and grading system: First, it is not concentrated enough, and the aggregates in the same particle size range in the aggregates at all levels obtained after winnowing The content is too low to meet the grading requirements of the concrete configuration production process for aggregates of different particle sizes

Second, the aggregate after winnowing still contains a certain amount of stone powder and soil, which will reduce the quality of the finished concrete when mixing concrete

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