Multi-layer vibration type grain screening device

Abstract

The invention discloses a multi-layer vibration type grain screening device and relates to the technical field of grain screening. The multi-layer vibration type grain screening device comprises a screening box. A plurality of support plates are arranged on the inner side wall of the screening box side by side from top to bottom. Positioning gear rings are fixed to the lower surfaces of the support plates. Screening cylinders are arranged on the inner sides of the positioning gear rings in the axial direction. Screening plates are horizontally mounted on the inner sides of the screening cylinders through elastic structures. A plurality of screening holes are uniformly formed in the upper surface of each screening plate. A rotating shaft is rotationally mounted in the screening box. A plurality of rolling shafts corresponding to the screening plates penetrate the rotating shaft in the radial direction. The rolling shafts are arranged below the screening plates. Transmission gears engaged with the positioning gear rings are correspondingly fixed to the two ends of each rolling shaft. A plurality of shifting rods are fixed to the outer walls of the rolling shafts in the radial direction. One ends of the shifting rods can abut against the lower surfaces of the screening plates. The multi-layer vibration type grain screening device is reasonable in structural design, convenient andfast to operate and capable of effectively improving the grain screening efficiency and has the high market application value.

Description

technical field [0001] The invention belongs to the technical field of grain screening, in particular to a multi-layer vibrating grain screening device. Background technique [0002] At present, after the grain is harvested, impurities such as stones and sand are often mixed into the grain, which affects the overall quality of the grain. Therefore, grain screening machines are usually used to clean the grain and separate large impurities such as stones and sand in the raw materials. Most of the existing vibrating and cleaning screens for grain screening only have the function of one-level grading and screening, and the material grading degree is low. Sometimes multiple equipments are used for sieving in series to achieve multi-grain size grading, but this method will greatly waste space resources. Increased screening costs. Therefore, it is urgent to study a kind of multi-layer vibrating grain screening device, so as to solve the above problems. Contents of the invention ...

AI Technical Summary

Problems solved by technology

Most of the existing vibrating and cleaning screens for grain screening only have the function of one-level grading and screening, and the material grading degree is low. Sometimes multiple equipments are used for sieving in series to achieve multi-grain size grading, but this method will greatly waste space resources. Increased screening costs

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