A continuous grading sand screen machine for concrete

Abstract

The invention discloses a continuous grading sand screener for concrete, and mainly relates to the field of civil equipment. It includes a hopper extending horizontally and horizontally. The hopper is sequentially provided with an upper hopper, a first drop hopper, a first buffer hopper, a second drop hopper, a second buffer hopper, and a third drop hopper from one end to the other in the length direction of the hopper. The first buffer hopper and the second buffer hopper feed back into the upper hopper through the return pipe. The side of the hopper away from the return pipe is provided with a material distribution plate. The length of the material distribution plate corresponds to the hopper. The material plate is vertically inclined outwardly, and the material distribution plate above the upper hopper is provided with a throwing mechanism that rotates with it. The material throwing mechanism includes a runner that rotates with the material distribution plate. Buckets are set on the surrounding side. The beneficial effect of the invention is that it realizes continuous sand screening and synchronous three-stage screening with high efficiency and high precision.

Description

technical field [0001] The invention relates to the field of civil equipment, in particular to a continuous grading sand screener for concrete. Background technique [0002] The requirements for sand used in concrete are higher than those used in construction. When mixing concrete, the degree of sand thickness and particle gradation should be considered at the same time. The role of sand in concrete is to adjust the ratio to optimize the mix ratio, so that the role of various materials can be better played with less cement. [0003] Grain grading refers to the matching of sand particles with different particle sizes. The sand with the same particle size has the largest porosity. If the gaps between large particles are filled by medium particles, and the gaps between medium particles are filled by small particles, the sand will form a denser volume and the porosity will be minimized. [0004] The degree of thickness refers to the overall degree of thickness of sand particle...

AI Technical Summary

Problems solved by technology

However, the existing sand screening equipment generally includes a drum type sand screening machine and a vibrating sand screening machine, both of which realize the distinction between the material on the screen and the material under the sun by the material whose particle size is suitable for passing through the screen, so it is impossible to achieve a variety of particle sizes High-efficiency screening, repeated screening will consume a lot of materials, the operation efficiency is low, and the cost will go up accordingly

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