Gravel screening device for building operations

Abstract

A gravel screening device for building operations comprises a screening shell. A conveying pipe is vertically arranged on the left side of the screening shell. A lifting rotary shaft is arranged in the conveying pipe. The top end of the lifting rotary shaft is connected with a first motor located above the conveying pipe. The lifting rotary shaft is provided with a screw blade. A discharging opening in the top end of the conveying pipe communicates with a feeding channel in the upper portion of the screening shell through a discharge pipe. A primary filter screen and a secondary filter screen are sequentially arranged in the screening shell from top to bottom, and the edge of the primary filter screen and the edge of the secondary filter screen are both connected with a coarse material box located outside the screening shell through receiving pipes. A vertical stirring rotary shaft is arranged in the screening shell. The gravel screening device has the beneficial effects that the structure is simple, design is reasonable, and the running cost of the gravel screening device is low; and gravel is lifted up through the screw blade and does not need to be fed from the upper portion of the screening shell, so that the labor intensity is lowered, and adding is convenient and rapid.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a sand and gravel screening device for building construction. Background technique [0002] With the development of the economy and the improvement of people's living standards, the construction industry has been carried out on a large scale throughout the country. Among them, sand and gravel of various sizes need to be used in the construction process. However, the sand and gravel sold in the market are of different sizes and specifications are not clearly divided. Various types of sand and gravel will be used on the construction site. One's sand and gravel have various uses; this requires people to further screen the sand and gravel in the later stage. [0003] However, due to the unreasonable structural design of the currently used vibrating screen, the screening effect is not good, and the screen will be blocked after a long period of use, which not only reduce...

AI Technical Summary

Problems solved by technology

Among them, sand and gravel of various sizes need to be used in the construction process. However, the sand and gravel sold in the market are of different sizes and specifications are not clearly divided. Various types of sand and gravel will be used on the construction site. One's sand and gravel have various uses; this requires people to further screen the sand and gravel in the later stage

[0003] However, due to the unreasonable structural design of the currently used vibrating screen, the screening effect is not good, and the screen will be blocked after long-term use, which not only reduces the work efficiency, but also greatly increases the work cost; Moreover, it is inconvenient to add material when sieving sand, and it needs to consume more physical strength

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