Building sand grading and screening device

Abstract

The invention discloses a building sand grading and screening device. The building sand grading and screening device comprises a filtering box; multiple layers of screen plates are obliquely arrangedin the filtering box from top to bottom; beating mechanisms are arranged between the adjacent screen plates; the beating mechanisms comprise L-shaped frames, levers and rubber balls; horizontal partsof the L-shaped frames are perpendicularly connected to the external side wall of the filtering box; vertical parts of the L-shaped frames are hinged to the middle parts of the levers; one ends of thelevers run through the external wall of the filtering box and extend into the filtering box; the rubber ball is arranged at one end, positioned in the filtering box, of the lever; a material inlet isformed in the position, close to the high edge of the uppermost screen plate in the filtering box, at the upper end of the filtering box; a hot air pipeline is arranged at the part, close to the material inlet, on the external side wall of the filtering box; a slide plate is obliquely arranged at the internal bottom end of the filtering box; a vibration motor is arranged under the filtering box;and the vibration motor is connected with the bottom end of the filtering box through a leaf spring. The building sand grading and screening device has the advantages of simple and novel structure, good screening effect, low manufacturing cost and high working efficiency.

Description

technical field [0001] The invention relates to a construction machine, in particular to a construction sand grading and screening device. Background technique [0002] During construction on a construction site, it is necessary to screen sand of various particle sizes to obtain the required coarse sand and fine sand. In the prior art, a filter screen with the same aperture is often used for screening, and only a single grain If you want to obtain sand with different particle sizes, you need to filter through filter screens with different pore sizes to obtain sand with various particle sizes. However, this method of work is labor-intensive and inefficient. Contents of the invention [0003] The object of the present invention is to provide a construction sand grading and screening device to solve the problems raised in the above-mentioned background technology. [0004] In order to solve the problems of the technologies described above, the technical solution adopted in t...

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Problems solved by technology

[0002] During construction on a construction site, it is necessary to screen sand of various particle sizes to obtain the required coarse sand and fine sand. In the prior art, a filter screen with the same aperture is often used for screening, and

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