Sand screening device for road construction

Abstract

The invention discloses a sand screening device for road construction, belongs to the technical field of road construction, and solves a problem that existing sand screening equipment is poor in sandscreening effect. The device comprises a device body, sand is placed in a feeding groove, through holes in a guide slope disperse and guide the sand to a lower portion, and a draught fan and a heatingbox are started; hot air is conveyed to a first air spraying pipe and a second air spraying pipe to be sprayed out for drying, a first motor is started to drive the first air spraying pipe and a first stirring blade to rotate to scatter and dry the sand, and a second motor is started to drive a second stirring blade to stir and a material distribution disc to throw out the sand under the drivingof a first belt; a semicircular gear is in gear connection with a rotating gear, a screening frame is driven to compress a first spring for reciprocating screening, and a cam rotates to drive a firstscreen to compress a second spring to vibrate up and down for screening; and under the driving of a second belt, a curved rod is driven to rotate so that the second screen compresses a third spring tovibrate up and down for screening, and the advantage of a good sand screening effect is possessed.

Description

technical field [0001] The invention relates to the field of road construction, in particular to a sand screening device for road construction. Background technique [0002] From the meaning of the word, the road is the infrastructure for various trackless vehicles and pedestrians; according to its use characteristics, it can be divided into highways, urban roads, country roads, factory and mine roads, forestry roads, examination roads, competition roads, automobile test roads, workshop passages As well as school roads, etc., there were also post roads in ancient China. [0003] Sand is one of the necessary materials to be used in the road construction process. In order to make the roads built with good quality and high bearing strength, it is usually necessary to sieve the sand mixed with impurities to make the sand quality better, namely Improves the quality of roads built. [0004] The existing sand screening equipment for road construction is usually blocked due to agg...

AI Technical Summary

Problems solved by technology

[0004] The existing sand screening equipment for road construction is usually blocked due to agglomeration during the sand screening process due to the wetness of the sand material, resulting in the problem that the sand screening cannot continue, affecting the working efficiency of the sand screening, which leads to road construction. As a consequence of the delay, the existing sand screening equipment has poor sand screening effect and cannot meet the needs of actual use. It can be seen from the above that the existing sand screening equipment has the disadvantage of poor sand screening effect, which is difficult to be popularized and applied

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