A multi-layer wide grading sieve

Abstract

The invention discloses a multi-layer wide classifying screen which comprises a rack, a feed box, two screening systems arranged below the feed box and a hanging mechanism, wherein each screening system comprises a splitting box, a screen box and a discharge box; the splitting boxes, the screen boxes and the discharge boxes are transversely arranged below the feed box side by side; the two sides of the screen boxes are connected with the splitting boxes and the discharge boxes respectively; the screen boxes are internally provided with multi-layer screen frames which are sequentially arranged from the top down, and screen meshes which are mounted in the screen frames and sequentially arranged from the top down; a transmission mechanism is arranged in the centers of the bottoms of the screen boxes; a screen box joist is arranged below each of the screen boxes; and the hanging mechanism hangs the screen boxes on the rack. According to the multi-layer wide classifying screen, a power system is arranged at the middle part of a screening mechanism, so that material screening is more uniform; the wide screen surface design shortens the flowing time of a material on a screen surface; and the multi-layer screen frame design increases a screening space and further saves a mounting site of equipment.

Description

technical field [0001] The invention relates to a screening device, in particular to a multi-layer wide grading screen which can be used for material cleaning and grading treatment. Background technique [0002] The grading screen is a vibrating screening mechanical equipment that uses the relative movement between the bulk material and the screen surface to make part of the material particles pass through the sieve holes, and divide the material into different grades according to the particle size. It is widely used as a material grading and screening equipment for grain, feed , flour, chemical and food industries. However, in the existing grading screen products, the ratio of screen surface width to length is generally about 1:2.5, the number of screen frame layers is generally 2 layers and 4 frames, and the maximum single machine output is about 180T / H. With the increase and expansion of large-scale ports and docks in my country, large-scale oil plants, grain processing ...

AI Technical Summary

Problems solved by technology

However, in the existing grading screen products, the ratio of screen surface width to length is generally about 1:2.5, the number of screen frame layers is generally 2 layers and 4 frames, and the maximum single machine output is about 180T / H

With the increase and expansion of large-scale ports and docks in my country, large-scale oil plants, grain processing plants, ports, and docks have more and more demands for screening equipment with a single machine output of 350-1000T / H. The existing grading screen products are very It is difficult to meet the screening requirements of large screening volume and high efficiency

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