Heavy-mass impurity winnowing device for bulk materials

Abstract

The invention provides a heavy-mass impurity winnowing device for bulk materials. The winnowing device comprises a reducer pipe and a suction fan arranged at the first end part of the reducer pipe, wherein the reducer pipe comprises a large-diameter part, a first small-diameter part connected to the first end part of the large-diameter part in a fluid communication mode and a second small-diameterpart connected to the second end part of the large-diameter part in a fluid communication mode, and a rotary discharger is arranged below the large-diameter part. The heavy-mass impurity winnowing device for the bulk materials is simple in structure, and can rapidly and effectively remove sand and stone in the bulk materials.

Description

technical field [0001] The invention relates to the technical field of impurity removal equipment, in particular to a wind separation device for heavy impurities used for bulk materials. Background technique [0002] Straw, called stalks in ancient times, also known as grass straw, refers to the remaining stems and leaves of gramineous crops such as rice, wheat, and corn after threshing. Among them, rice straw is often called rice straw and rice straw, and wheat straw is called straw. Chinese farmers have a long history of using crop stalks, but due to the low level of agricultural production and low output in the past, the amount of stalks was small. Except for a small amount of straw used for gaskets, feeding livestock, and some used for composting, most of the stalks were burned as fuel. It’s gone. With the development of agricultural production, since the 1980s, China’s grain output has increased significantly, and the amount of straw has also increased, so that there i...

AI Technical Summary

Problems solved by technology

[0003] In the current production process of straw boards, the quality of straw bulk materials directly affects the quality and performance of finished boards. The most important point in evaluating the quality of straw raw materials is whether there are hard impurities in straw bulk materials. The picking and packing of straws are all carried out in the field, and hard impurities such as stones, iron nails, and iron wires will inevitably be mixed in. In actual production, a good removal effect can be achieved by installing an iron remover to remove ferromagnetic impurities mixed in the straw. However, there has been no good way to remove sand and gravel. It is often removed by workers, which is labor-intensive and the removal effect is not very good.

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