Multifunctional construction machinery sand screening machine

Abstract

The invention discloses a multifunctional construction machinery sand screening machine, and relates to the technical field of mechanical equipment for construction sites. The multifunctional construction machinery sand screening machine comprises a crushing barrel, a sand screening fan and a distribution box, wherein a fixed screen plate, a rotary screen plate and a crushing roller are arranged in the crushing barrel and are rotationally matched; and a screening air pipe and a speed reducing air pipe are arranged on the surface of the sand screening fan, and both the screening air pipe and the speed reducing air pipe communicate with the crushing barrel. According to the multifunctional construction machinery sand screening machine, the crushing barrel is arranged, a crushing column of the fixed screen plate is matched with the rotary screen plate to shear and crush bonded sand blocks so as to improve the sand screening efficiency, and the arranged crushing roller is located at the uppermost part of the crushing barrel to preliminarily crush sand so as to facilitate subsequent layer-by-layer screening; the speed reducing air pipe and the screening air pipe are arranged, the sand screening fan is used for blowing air, and rapidly falling sand flow is reduced through the speed reducing air pipe, so that subsequent accurate screening is facilitated; and meanwhile, light impurities in the decelerated sand flow are screened out by using the screening air pipe, or the sand is directly screened into fine sand and coarse sand, so that the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment for construction sites, in particular to a multifunctional construction machinery sand screener. Background technique [0002] The commonly used building materials in construction sites are sand and cement, and because there are many impurities and bonded sand in the sand, the quality of the project is often affected during the construction process, so the sand is often screened before construction ; Existing sand screening machines are usually mechanical vibrating screens, which often only screen out impurities, which will cause incomplete sand screening and waste of resources during the sand screening process containing a large number of cohesive sand blocks, affecting sand screening efficiency Simultaneously, in the prior art, there is also the use of spraying devices to wash sand. Although this type of equipment can thoroughly clean and screen sand during the entire working proces...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-functional sand screening machine for construction machinery, which solves the pro

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