Grade screening machine for fritillaria ussuriensis maxim

Abstract

A grade screening machine for fritillaria ussuriensis maxim is characterized by comprising a conveying separating unit, a feeding unit, a spiral curve screening unit, a horizontal screening unit, a power unit and a machine frame. The spiral curve screening unit is provided with screening rollers arranged in parallel and extending to positions below a high end of a conveying mechanism, the two ends of each screening roller are connected to the machine frame, the screening rollers comprising circular screening rollers and spiral screening rollers are arranged at intervals, the surface of each spiral screening roller is provided with threads, and the directions of the threads at two sides of the axial midpoint of each spiral screening roller are opposite to each other, and the directions of the threads, on the same sides of the axial midpoints of the spiral screening roller, of every two adjacent spiral screening rollers are opposite to each other. According to the grade screening machine, the threads are arranged on the spiral screening rollers, the conveying path of screening materials can be changed, thorough screening can be completed with a short conveying path, meanwhile the possibility of scratching for the screening materials is avoided, 2:1 screening meshes can improve the passing rate, damage is low, and multi-stage screening can be achieved.

Description

technical field [0001] The invention relates to a screening machine, in particular to a flat fritillary grade screening machine. Background technique [0002] Screening machines are often used in production to screen the produced products or raw materials to separate different particle grades. Screening machines are also used in the production of flat shells. Existing flat shell screening machines generally use The sieve and conveying rollers separate the particles through vibration. The vibration of the sieve can increase the passing rate, but the probability of scratching the flat shells is higher. Using the conveying roller can reduce the scratches, but the residence time of the flat shells is short, and a longer conveying distance is required. It can be screened thoroughly, so the existing screening machine needs to be improved. Contents of the invention [0003] In order to provide a machine for low-damage and short-distance transport of flat fritillary shells, the i...

AI Technical Summary

Problems solved by technology

[0002] Screening machines are often used in production to screen the produced products or raw materials to separate different particle grades. Screening machines are also used in the production of flat shells. Existing flat shell screening machines generally use The sieve and conveying rollers separate the particles through vibration. The vibration of the sieve can increase the passing rate, but the probability of scratching the flat shells is higher. Using the conveying roller can reduce the scratches, but the residence time of the flat shells is short, and a longer conveying distance is required. It can be screened thoroughly, so the existing screening machine needs to be improved

Images