Multi-level sand sifting equipment

Abstract

The invention discloses multi-level sand sifting equipment which comprises a sand filling hopper, a transfer device for conveying sand in the sand filling hopper up, a multi-level sand filtering device, a sand stacking room, a drainage ditch, a waste water recovery pond and a sand washing device. By arranging spiral blades on the inner wall of a roller, the moving path of gravels is prolonged effectively and the gravels are fully screened. The pitch among the spiral blades is arranged reasonably according to the grain sizes of the gravels, so that the screening effect is guaranteed. By arranging a water tank on the ground of the sand stacking room to buffer falling gravels, the ground is protected. By means of a detachable partition plate, the capacity of a compartment is adjusted reasonably according to the screening condition of the gravels, so that the utilization ratio of space is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of building material processing equipment, and in particular relates to a multi-level sand washing equipment. Background technique [0002] With the development of the construction industry. The demand for sand used in the domestic construction industry has increased. The construction industry uses a large amount of sand materials, and has different demands for sand materials of different particle sizes. Therefore, the sand material needs a sand screening process before it is used. The purpose is to separate the coarse sand from the fine sand. The method is inefficient and labor-intensive; on the other hand, the sand often contains mud and other harmful impurities, such as saline and alkali, which can corrode steel bars and affect the life of the building. Therefore, the mud and harmful impurities in the sand need to be cleaned . [0003] Chinese Patent No. CN201810048245.X discloses a water-saving multi-...

AI Technical Summary

Problems solved by technology

The device cannot screen the sand and gravel in a large particle size section, and the applicable range is narrow

[0005] Due to the limited working length of the currently used sand screening device, one screening cannot fully separate the sand and gravel with large and small particle sizes, and repeated screening operations are required, and the work efficiency is low; due to the irregular shape of the sand and gravel, the surface is relatively sharp , the impact with the ground during the stacking process will easily cause damage to the ground; the space for storing building materials at the construction site is limited, and the currently used sand screening device cannot reasonably plan the sand stacking space, which is likely to cause space waste or insufficient space; most The sand screening device cannot accurately screen the sand and gravel into multiple particle size segments, but can only simply screen the large and small sand and gravel

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