Secondary sand screening device for construction

Abstract

The invention discloses a secondary sand screening device for construction. The secondary sand screening device comprises a bottom plate, wherein a left vertical plate and a right vertical plate are vertically and fixedly installed on the bottom plate, a screening box is fixedly installed on the bottom plate, and a plurality of screens are circularly and fixedly installed on the surface of a worm;vertical limiting plates are vertically and fixedly installed on the ends of the first sieving screen and the second sieving screen respectively, a scraping plate of which the lower end is abutted with the upper surface of the second sieving screen is rotatably arranged on the end of an extension plate, and a limiting spring is connected between the scraping plate and the extension plate. According to the secondary sand screening device, sands are rotated to scatter by rotating the screens, so that the sands are promoted to disperse, and the subsequent screening speed is increased; the sand screening speed is increased through the left-and-right reciprocating sliding of the first sieving screen and the second sieving screen, the second sieving screen does reciprocating sliding and moves relative to the scraping plate, the scraping plate swings under the elastic action of the limiting spring so as to scrape sands on the second sieving screen and promote sands to pass through the secondsieving screen, and additionally, the second sieving screen is prevented from being blocked.

Description

technical field [0001] The technical field of construction machinery of the present invention is specifically a secondary sand screening device for building construction. Background technique [0002] Building construction refers to the production activities in the implementation stage of engineering construction. It is the construction process of various buildings. It can also be said to be the process of turning various lines on the design drawings into real objects at designated locations. It includes basic engineering construction, main structure construction, roofing engineering construction, decoration engineering construction, etc. The place where the construction works is called "construction site" or "construction site", also called construction site. [0003] Sand is used as a building material in the construction process, and the sand particles are of different sizes, so they need to be screened to obtain sand with different particle sizes. According to specific ...

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Problems solved by technology

[0003] Sand is used as a building material in the construction process, and the sand particles are of different sizes, so they need to be screened to obtain sand with different particle sizes. According to specific construction requirements, sand that meets the requirements is used. The current sand screening device is The sifting effect of the sand is poor and the sieving speed is slow

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