A kind of impurity cleaning equipment before grain enters the warehouse

Abstract

The invention discloses an impurity removing device used before grain is put in storage. The device comprises a feeding mechanism, a horizontal winnowing channel, a gravity settling chamber, a vibrating sieve cleaner, a vertical winnowing channel, a first cyclone separator, a second cyclone separator and a supporting rack. An exhaust port of the horizontal winnowing channel is led to a feed inlet of the gravity settling chamber, and a discharge opening of the horizontal winnowing channel is led to a feed inlet of the vibrating sieve cleaner. An exhaust port of the gravity settling chamber is led to an air inlet of the first cyclone separator, and a discharge opening of the vibrating sieve cleaner is led to a feed inlet of the vertical winnowing channel. An exhaust port of the vertical winnowing channel is led to an air inlet of the second cyclone separator, an exhaust port of the first cyclone separator is led to an air inlet of the vertical winnowing channel, and an exhaust port of the second cyclone separator is led to an air inlet of the horizontal winnowing channel. The impurity removing device is good in impurity removing effect, dust pollution is little, the energy utilization rate is high, and manufacturing and use cost is reduced.

Description

technical field [0001] The invention relates to the field of impurity removal for grain, in particular to an impurity cleaning device for grain before storage. Background technique [0002] With the development of modern agriculture, great changes have taken place in food production and harvesting methods, and mechanized harvesting has gradually become the mainstream trend. In the process of mechanized grain harvesting, some impurities such as leaves, ears, and stems are mixed into the grain, resulting in a significant increase in the content of large and light impurities in the grain. The habit of "gross grain" leads to the phenomenon of "double high" (high moisture content and high impurity content) when purchasing grain. [0003] In order to ensure that the grains in the warehouse meet the national standards, it is necessary to clean the grains. However, in actual work, in the face of the "double high" situation of grains, the existing impurity cleaning equipment has the...

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Problems solved by technology

[0004] 1. Existing cleaning equipment generally only includes a sieving machine and air selection channel. The raw materials only undergo one vibration screening and one air selection, which is only suitable for raw grains with low impurity content. For the above-mentioned raw grains with high impurity content, the cleaning effect is very good. It is difficult to meet the requirements of the national standard and must be cleaned many times;

[0005] 2. The existing cleaning equipment has a poor effect of removing impurities and reducing dust, resulting in dust flying at the cleaning site, and the harsh environment near the operating point, which seriously affects the health of operators and management personnel;

[0006] 3. When processing raw grains with high impurities, the sieve holes in the sieving machine are easily blocked, which not only affects the sifting effect, but also easily causes equipment damage

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