Wind power sand selecting device with adjustable product fineness modulus

Abstract

The invention relates to the technical field of sand making devices, in particular to a wind power sand selecting device with an adjustable product fineness modulus. The wind power sand selecting device comprises a wind selecting bin, a wind supplying device, a dust removing device and a wind board. The wind selecting bin is provided with a feeding port, wind inlets, a dust removing opening and discharging ports. The number of the wind inlets is at least two, and the wind inlets are formed below the feeding port and distributed in the longitudinal direction, the number of the discharging ports is at least two, and the discharging ports are formed in the bottom of the wind selecting bin. The wind supplying device is communicated with the wind selecting bin through the wind inlets and used for supplying wind into the wind selecting bin, and strong wind supplied by the wind supplying device inclines towards the dust removing opening from the feeding port. The wind board is connected above the discharging ports inside the wind selecting bin in a pivoting mode and can rotate around a pivot to adjust the angle of the strong wind. The dust removing device is communicated with the wind selecting bin through the dust removing opening. According to the wind power selecting device with the adjustable product fineness modulus, grading is more accurate, the proportion between fine material and rough material can be controlled, and the product fineness modulus can be controlled.

Description

technical field [0001] The invention relates to the technical field of sand making equipment, in particular to a device that uses wind force to select machine-made sand with different particle sizes and effectively reduce the powder content in the machine-made sand. Background technique [0002] The existing sand making method is to use a vertical shaft impact crusher to make sand, and all or part of the broken objects above the product size after being screened by the crusher is returned to the crusher for re-crushing. The machine-made sand produced by this conventional method often has poor gradation, discontinuity, and the powder content seriously exceeds the standard. The sieve size ranges from 1.2mm to 2.5mm. Insufficient particle size range of 0.6mm, such sand cannot meet the standard requirements stipulated in GB / T14684 "Sand for Construction", and cannot be used as fine aggregate for concrete. [0003] Therefore, in this case, it is necessary to adjust the particle ...

AI Technical Summary

Problems solved by technology

Although the adjustment of the general particle size composition needs to rely on the screen (vibration action), the problem of clogging is prone to occur after the classification point is adjusted to a small size

In addition, it is very difficult for the screen to adjust the ratio of a specific particle size range such as 0.15 to 0.6 mm

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