Circulatory sand screening device used for construction site

Abstract

The invention discloses a circulating sand screening device for a construction site, which comprises a vibrating motor, a screen, a hydraulic cylinder and a circulating conveying device. The vibration of the vibrating motor is used to speed up the screening of the sand by the screen, and at the same time, the sand screening of the sand screen is avoided. The holes cause blockage and affect the normal use of the screen. The screen is set horizontally to fully screen the sand, and the hydraulic cylinder is used to drive the hydraulic rod to extend and then push the frame to rotate along the side hinged with the box, thus realizing the screen. The inclined setting of the screen makes the sand that does not pass through the screen fall into the collection tank under the action of gravity, which realizes the automatic cleaning of the sand that does not pass through the screen, improves the practicability of the equipment, and falls from the screen into the collection tank The sand inside further slides into the cylinder body along the slanting plate, thereby realizing the circular screening of the sand and improving the effect of sand screening.

Description

technical field [0001] The invention relates to the field of construction machinery and equipment, in particular to a circulating sand screening device for a construction site. Background technique [0002] Sand is composed of minerals and tiny rock fragments. Rock fragments are formed by erosion and weathering of rock. The composition of the sand varies from place to place, depending on the source and conditions of the local rocks. Natural sand is divided into river sand, sea sand and mountain sand. The thickness of the sand is divided into 4 grades according to the fineness modulus. Medium sand is sand with a density modulus of 3.0-2.3mm and an average particle size of 0.5-0.35mm. The sand used for ordinary concrete is preferably medium sand; [0003] In the process of building construction, in order to obtain sand with a suitable particle size, it is generally necessary to screen the sand. On the construction site, the sand is generally screened manually. The efficien...

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Problems solved by technology

[0003] In the process of building construction, in order to obtain sand with a suitable particle size, it is generally necessary to screen the sand. On the construction site, the sand is generally screened manually. The efficiency of sand screening is low and the effect is poor. At the same time, the work intensity of construction workers is increased. Some construction sites use sand screening devices that cannot screen sand circularly, and it is difficult to ensure the effect of sand screening

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