Screening and winnowing machine for sand and stone

Abstract

The invention discloses a screening and winnowing machine for sand and stone, which comprises a screening machine, a winnowing bin, a blower, an air inlet channel and an exhaust channel, wherein the screening machine is mounted at the upper part of the winnowing bin; the winnowing bin communicates with the air inlet channel and the exhaust channel; a plurality of collecting hoppers are arranged at the lower part of the winnowing bin; a turning plate is mounted at the lower part of the winnowing bin; in the screening machine, a screening frame does not vibrate; the screening frame of the screening machine is directly and rigidly connected with the winnowing bin; the screening machine adopts a suspended structure; the mounting angle of the screening machine can be adjusted within the range of 35-40 degrees; and side air inlet channels are arranged on the side wall of the winnowing bin. The screening and winnowing machine can carry out screening and powder selection of materials at the same time to obtain products in different particle sizes, improves the screening efficiency and optimizes machine-made sand grading.

Description

technical field [0001] The invention relates to a screening wind separator for sand and gravel. Sand and gravel include construction sand, tailings and other non-metallic minerals. The organic combination of screening machine and winnowing machine can achieve higher classification and powder selection efficiency, compact structure and small footprint. The invention can screen and classify materials at the same time, improve the efficiency of screening and classifying powder and optimize the gradation of machine-made sand. Background technique [0002] Screening and winnowing equipment are important mechanical equipment in the dry sand making industry. The material with suitable particle size can be obtained by screening the crushed material, and the content of stone powder (referring to particles less than 0.075mm) in the machine-made sand can be reduced through air separation equipment, and products with different particle sizes can also be obtained. These two types of equ...

AI Technical Summary

Problems solved by technology

The material with suitable particle size can be obtained by screening the crushed material, and the content of stone powder (referring to particles less than 0.075mm) in the machine-made sand can be reduced through air separation equipment, and products with different particle sizes can also be obtained. These two types of equipment are often Used alone, the process is complicated and the floor area is large

At present, wind screening and other equipment can also be used to screen and select powder at the same time on the market, but the output is small, and the fineness modulus and powder content of the finished product are difficult to meet the required quality requirements.

[0003] In patent CN201410092116 and patent CN201310293148, the material enters from one end, and the material is classified only by wind force. Due to the limitation of wind force, the stone powder is blown from the beginning to the end, with high energy consumption and low efficiency. No vibration source and fixed sieve are used. The mesh screening machine screens the material first

[0004] In the patent CN201120009666, the vibrating screen is used to screen light materials instead of materials with different particle sizes, and the screened products are not divided into several finished products with different specifications

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