A gap type sand screening device with automatic feeding and discharging

Abstract

The invention discloses a gap type sand screening device with an automatic feeding and discharging function. The gap type sand screening device comprises a transverse plate and a sand screening frame;the sand screening frame is located on the upper side of the transverse plate; the two sides of the sand screening frame are both provided with screw rod shafts, and the two screw rod shafts are rotationally connected with the transverse plate through bearings; one end of the sand screening frame is fixed to the upper end face of the transverse plate through a supporting seat; the two screw rod shafts are both provided with driving sleeves which are connected with the two screw rod shafts through threads in a matched mode; the end, away from the supporting seat, of the transverse plate is provided with a vertical lifting barrel which is internally provided with a conveyor auger, and the lifting barrel and the conveyor auger are coaxial; the shaft section of the lower end of the conveyor auger is provided with a first transmission gear, and the first transmission gear is engaged with a sector gear; and the lower end of the lifting barrel is provided with a feeding inlet, and the upperend of the lifting barrel is provided with a discharging outlet located in the upper end of the sand screening frame. The gap type sand screening device is simple in structure, high in sand screeningefficiency, low in manpower labor intensity, capable of automatically conducting feeding and discharging, convenient to control and high in practicality.

Description

technical field [0001] The invention relates to a building sand screening device, in particular to a gap type sand screening device for automatic feeding and discharging. Background technique [0002] Sand refers to the granular material with a particle size of 0.074-2mm that is washed by rainwater or rolled by rock after weathering of rock. There are many types of sand, including river sand, sea sand, metal sand, natural sandstone pulverized sand, and so on! Say a little bit off, and emery cloth. The main component of ordinary river sand is silica. Sand generally contains a small amount of soil, and the soil content is limited by the level of the building. The apparent density of construction sand is greater than 2500kg / m 3 , and the loose bulk density is greater than 1350kg / m 3 ; Sand is one of the main components of concrete and mortar, and is a bulk material in civil engineering. The sand screening generally used at present is to remove impurities by manually shovel...

AI Technical Summary

Problems solved by technology

Generally, the sand screening currently used is manually shoveled and thrown onto the screen to remove impurities. This method of sand screening is less efficient and requires more labor.

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