Building gravel screening device

Abstract

The invention relates to the field of buildings, and particularly discloses a building gravel screening device which comprises a shell, supporting legs, a filling opening and a discharging cavity, wherein a horizontal rotary screening cavity of a cylindrical structure is formed in the shell, a rotary net cylinder rotating around a center shaft is coaxially mounted in the rotary screening cavity, a fixed net plate is arranged in the rotary net cylinder, the height of the rotary net cylinder is changed to adapt to gravel in the rotary net cylinder, and the gravel clamped on screening holes of the rotary net cylinder moves to the lower side of the fixed net plate to make contact with the fixed net plate. Through the fixed net plate arranged inside, sand in the rotary net cylinder can be stirred, so that the falling efficiency of sand grains is improved; the fixed net plate can be in contact with the sand clamped on screening holes of the rotary net cylinder; the sand is ground and cut under the condition of relative movement of the fixed net plate and the rotary net cylinder, so that tangential force is applied to the sand clamped in the fixed net plate, and the sand is separated from the screening holes; and meanwhile, the reciprocating relative movement plays a role in grinding and cutting the gravels clamped in the device, so that the yield of fine sand is increased.

Description

technical field [0001] The invention relates to the construction field, in particular to a construction sand and gravel screening device. Background technique [0002] Construction engineering refers to the engineering entity formed through the construction of various housing buildings and their ancillary facilities and the installation activities of supporting lines, pipelines and equipment. Among them, "housing construction" refers to projects that have roofs, beams, walls, foundations, and can form internal spaces to meet people's needs for production, living, learning, and public activities. The construction sand and gravel need to be screened before use, so that the sand and gravel with larger particles can be screened out, so as to ensure that the sand and gravel used in construction construction meet the needs of the building and improve the quality of the building. The existing simple screening device is to send sand and gravel to the screen screen, and the fine san...

AI Technical Summary

Problems solved by technology

The existing simple screening device is to send sand and gravel to the screen screen, and the fine sand and gravel are shaken off by many people manually moving the screen up and down to realize the screening, but some sand and gravel are easy to get stuck on the screen holes, so that the screen holes are blocked. Blockage, affecting the whereabouts of fine sand particles, is not conducive to the use of construction

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