Centrifugal screening and grading device

Abstract

The invention discloses a centrifugal screening and grading device. The centrifugal screening and grading device comprises a base and spoke guide rail assemblies, a rotating disc is rotationally arranged on the base, a hinged disc is arranged in the center of the rotating disc, the multiple spoke guide rail assemblies are hinged to the edge of the hinged disc in the diameter direction, a plurality of division bar connecting seats are movably arranged on each spoke guide rail assembly, and the distances between the division bar connecting seats on the same spoke guide rail assembly are gradually increased in proportion in the direction from the circle center to the outside; telescopic division bars capable of changing the length are connected between the division bar connecting seats which are arranged on every two adjacent spoke guide rail assemblies and have the same distance from the circle center, and the telescopic division bars connected with the division bar connecting seats which have the same distance from the circle center define a circle of polygon; an annular cavity is formed in the position, corresponding to each circle of telescopic partition strip, of the base. Compared with the prior art, the centrifugal screening and grading device has the advantages that the polygons defined by the different telescopic division bars can be scaled according to the proportion, the device is suitable for screening various materials with different outer diameter ranges, and the inclination angle of the spokes can be changed.

Description

technical field [0001] The invention relates to the technical field of screening devices, in particular to a centrifugal screening and grading device. Background technique [0002] The grading and screening device mainly screens objects according to their volume, weight, and density. In the prior art, screening machines include vibrating screening machines and drum screening machines. Vibrating screening machines make materials pass through meshes with different apertures for screening , the drum screening machine is composed of several cylindrical grids. The whole machine is kept inclined to the ground plane. Through the full rolling of the drums, materials of different sizes are forced to flow forward along the slope of the drums, and are screened in the corresponding grid screening section. Sift out and drop into the prepared funnel. [0003] However, small materials may fail to fall into the corresponding grid at the front end due to overlapping and bonding, but fall in...

AI Technical Summary

Problems solved by technology

[0003] However, small materials may fail to fall into the corresponding grid at the front end due to overlapping and bonding, but fall into a larger grid at the rear end, making the screening inaccurate. Centrifugal screening can simultaneously Combining weight and volume for screening, the centrifugation of the lighter materials is not enough to move them to the larger grid outside, thus improving the accuracy of the screening, but the existing centrifugal screening equipment is usually carried out through the screen Screening, because the mesh of the screen is fixed, only one specification of material can be screened at a time, and the scope of application of the screening device is low

Images