A multi-stage feeding pneumatic conveying device

Abstract

The invention relates to a multistage feeding pneumatic conveying device and belongs to the technical field of agricultural harvest machinery. The device comprises an air inlet end and an air inlet pipe communicated with an air outlet of a fan. The air outlet end of the air inlet pipe is connected with the lower end of a material conveying pipe through a material falling device which is arranged horizontally. The upper end of the material conveying pipe is communicated with a material throwing pipe. The main body of the material falling device is a tubular tank with the upper portion provided with a feeding port. Position-adjustable rotating shafts which are perpendicular to the material conveying direction are supported at the open portion of a material falling port of the tubular tank at intervals. A guide block is fixed to the rotating shafts. One side of the guide block is fixed to a jet plate. The height of the jet plate decreases gradually in the material conveying direction. A grass shifting shaft parallel to the material conveying direction is supported above the middle of the tubular tank. The grass shifting shaft extends out of anti-winding blades and shifting fingers in the radial direction, and the shifting fingers are distributed at intervals in the axial direction and stretch out in the radial direction, so that a grass shifting device is formed. By means of the multistage feeding pneumatic conveying device, it can be guaranteed that materials flow stably, and blockage of the feeding port and backflow of the materials are effectively avoided.

Description

technical field [0001] The invention relates to a pneumatic conveying device, in particular to a multi-stage feeding pneumatic conveying device, which belongs to the technical field of agricultural harvesting machinery. Background technique [0002] Peanut is an important oil crop, and harvesting is an important link in the peanut production process. Peanut mechanized combined harvesting is an important part of realizing the whole mechanization of peanut production. According to the applicant's understanding, combined peanut harvesting can be divided into two types: full-feeding and half-feeding. The full-feeding combined harvesting equipment can complete combined harvesting operations such as peanut picking, fruit picking, cleaning, transportation, and fruit collection at one time. The peanut pod pneumatic conveying device is an important part of the full-feed peanut combined harvesting equipment. During the combined harvesting operation, the peanut material after fruit p...

AI Technical Summary

Problems solved by technology

However, the following problems exist in the use of air locks: 1) perfect sealing measures are required, and the structure is relatively complicated; 2) additional working power needs to be provided; 3) it is easy to cause damage to materials, and when the amount of materials is large, it will cause blockage; 4) it needs to occupy certain space

In addition, a small number of pressure-feeding pneumatic conveying devices without air locks must have a sufficient distance between the feeding port and the conveying pipeline to ensure that the stable flow enters the conveying pipeline, so the volume is huge

[0004] In addition, because the material is inevitably mixed with debris such as broken branches, broken seedlings and residual film, it is more likely to cause blockage of the discharge port, resulting in the inability of the material to be continuously and smoothly conveyed

[0005] So far, there is no good solution to solve the problem of wide feeding range, low feeding height and large feeding volume

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