摘要吸粮机在我国粮食行业的使用始于60年代初，首先用于地下仓出粮。我国于1992年制定了《固定吸粮机技术条件》行业标准，于1994年制定了《固定式吸粮机试验方法》行业标准。

目前，我国正在进行大规模的国家储备粮库建设，房式仓的出仓、浅圆仓的输送作业及粮食"四散"流通等工作均需要气力输送设备。但我国的吸粮机与国外相比还有很大的差距，处于试制阶段。 

本课题是设计中型的码头吸粮机。灰尘控制的好坏是选择吸粮机的一个重要指标。根据散粮运输发展需要，在进一步发扬吸粮机优点的基础上，采用两级除尘器，使系统除尘更加高效，改善了除尘性能，减少对环境的污染，让更少的灰尘进入罗茨风机，减缓叶轮磨损，延长风机的使用寿命，为内河港口散粮卸船作业和粮食仓库进出作业提供了一种新机型。49544

毕业论文关键词：气力输送；除尘器；风量

Abstract Grain elevator in industry of our country food use started in the early 60's, first used in underground silo grain. Our country in 1992 formulated the" fixed" grain elevator technical conditions of industry standards, in 1994developed a" fixed" industry standard test method for smoke machine.

At present, our country is undergoing a massive national reserve grain depot builds a warehouse, warehouse, squat silo conveying operation and food " broadcast" current work need pneumatic conveying equipment. But our country's grain elevator compared with foreign countries there is still a big gap, at the trial stage.

This topic is the design of medium terminal of grain elevator. Dust control is selected as one of the important indexes of grain elevator. According to the need of the development of bulk grain transport, In the further development of grain elevator on the basis of merit, The two stage dust catcher, The system of dust more efficient, improve the dust removal performance, To reduce environmental pollution, make less dust into the roots blower, Slow impeller abrasion, prolong the service life of the wind machine, For inland river bulk grain ship unloading operation and food warehouse in and out operation provides a new model.

Keywords:  Pneumatic conveying; Precipitator; Air volume

目           录

引       言 1

第一章  概    述 2

1．1气力输送的优缺点 2

1．2气力输送设备与机械输送设备比较 2

1．3气力输送的类型 2

1．3．1吸送式 3

1．3．2压送式 3

1．3．3 混合式 4

1．4  气力输送的特点 5

第二章  气力输送设备的主要部件 7

2．1 接料器 7

2. 1. 1 诱导式三通接料器 7

2. 1. 2吸尘式三通接料器 8

2. 1. 3 双层补气式接料器 9

2. 1. 4 套筒形吸嘴 10

2．2 卸料器 12

2. 2. 1离心卸料器 12

2. 2. 2容积式卸料器 13

2. 2. 3 惯性卸料器 15

2．3 闭风器