Machine-made sandstone powder screening device and machine-made sandstone powder shape classification method

Abstract

The invention belongs to the technical field of sand preparation for construction, and provides a machine-made sand powder screening device and a shape classification method for machine-made sand powder in order to solve the problems of lack of theoretical basis for fine management and application of machine-made sand. The screening device is installed at the front end of the conveying device, and the collecting device is arranged in the middle of the conveying device; the screening device is equipped with a small particle collection track horizontally on the top of the support, and a trommel is installed on the upper end of the small particle collection track, and the machine-made sand inlet is set at the front of the trommel screen. A large particle collection track is installed at the exit of the rear section of the screen; a motor is installed at the entrance of the large particle collection track; the transmission device is the upper and lower conveyor belts installed at the bottom of the drum screen outlet, and the collection device is the positive plate of the capacitor horizontally arranged above the middle of the conveyor belt through the support frame A plurality of negative electrode aluminum rods are installed at intervals on the vertical support rod of the support frame, and the negative electrode aluminum rods are arranged in the hollow part between the upper and lower conveyor belts. More detailed classification of machine-made sand and gravel powder in different shapes makes the selection of sand and gravel for engineering more scientific.

Description

technical field [0001] The invention belongs to the technical field of sand preparation for construction, and in particular relates to a screening device for machine-made sand and stone powder and a shape classification method for machine-made sand and stone powder. Background technique [0002] As the mining of natural sand and gravel is gradually banned, machine-made sand has gradually become the choice of construction sand. Machine-made sand refers to rock particles with a particle size of less than 4.75mm after mechanical crushing. It is mainly divided into granite sand making, cobblestone sand making, limestone sand making, construction waste sand making and so on. The quality and performance of machine-made sand made of different sand-making raw materials are different. Since the machine-made sand is produced by mechanical destruction, it is inevitable that more stone powder will be produced. Relevant studies have proved that the amount of stone powder has a great i...

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Problems solved by technology

[0003] In order to solve the problems of lack of theoretical basis for the refined management and application of machine-made sand, the present invention provides a machine-made sand-stone powder screening device and a shape classification method for machine-made sand-stone powder

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