Multi-stage sand screening equipment for building

Abstract

The invention discloses multi-stage sand screening equipment for a building. The multi-stage sand screening equipment comprises a box body, a primary screening mechanism, a secondary screening mechanism and a tertiary screening mechanism, wherein the secondary screening mechanism is arranged on the right side of the box body, the secondary screening mechanism comprises a first screen plate and a material guide plate, the material guide plate is arranged below the first screen plate, and a backflow hole is formed in the position, located at the lower end of the material guide plate, of the boxbody. According to the multi-stage sand screening equipment for the building, a screen drum, scraping plates, an annular supporting plate, a second screen plate and a rotating shaft linkage mechanismare arranged, so that screening and recovery of fine sand in waste residues are achieved by swinging of the second screen plate, the screening effect is improved, repeated sand screening is avoided, and the screening efficiency is improved; the conical screen drum is arranged, and crushing cones arranged on the screen drum and screen holes formed in the screen drum are arranged, so that sand blocks in coarse sand are crushed, meanwhile, the waste residues in the coarse sand are separated efficiently, and follow-up treatment is facilitated; and the screen drum and the second screen plate are arranged, so that the secondary screening is carried out on the coarse sand, and the screening effect is improved.

Description

Technical field [0001] The invention relates to the field of construction machinery, in particular to a multi-stage sand screening device for construction. Background technique [0002] Sand screening machine is a common construction equipment, through the screen device to remove the gravel and other waste residues in the coarse sand to obtain fine sand that meets the standards of construction sand. With the development of technology, the sand screening machine has already replaced artificial sand screening. Greatly improve the efficiency of sand screening; but the traditional sand screening machine is equipped with a separate vibrating screen or sieve tube to screen the coarse sand once. If there is more fine sand remaining in the waste residue, it needs to be The waste residue of sand is put into the sand screening machine again. Although the waste of fine sand is avoided, it consumes a lot of time and electricity, the operation is cumbersome, and the overall efficiency of the ...

AI Technical Summary

Problems solved by technology

[0002] Sand sieving machine is a common construction equipment. Through the sieve plate device, the stones and other waste residues in the coarse sand are removed to obtain fine sand that meets the standard of construction sand. With the development of technology, the sand sieving machine has already replaced manual sand sieving. The efficiency of sand screening is greatly improved; however, the traditional sand screening machine is equipped with a separate vibrating sieve plate or sieve cylinder for single screening of coarse sand. The waste residue of sand is put back into the sand screening machine. Although the waste of fine sand is avoided, it consumes more time and electric energy, and the operation is cumbersome, which reduces the overall efficiency of sand screening. In addition, traditional sand screening machines are only First-level screening agency, the screening effect cannot be guaranteed

Images