Soil block crushing and screening device

Abstract

The invention relates to the technical field of crushing and screening, in particular to a soil block crushing and screening device. The soil block crushing and screening device comprises a conveyingdevice, a primary crushing device, a screening and crushing device body I, a screening and crushing device body II and a material collection device. The two screening and crushing device bodies are arranged behind the crushing device and used for conducting screening and crushing on primarily crushed soil blocks through two steps. The soil blocks are crushed and screened through a cylinder screencomposed of blades, so that the soil blocks are further made finer and are totally crushed into soil particles with the moderate particle size, and the soil particles are screened out from the cylinders screen. The finer soil particles with the fine particle size are further crushed by crushing balls in the screening and crushing device body II and then are screened out from screen holes and collected. The soil particles with the qualified particle size are obtained through repeated crushing and screening.

Description

technical field [0001] The invention relates to the technical field of crushing and screening, in particular to a crushing and screening device for soil clods. Background technique [0002] In order to obtain the soil particles with the required precision, the existing soil clod screening device needs to be screened on the sieve and transport the soil clods that cannot pass through the screen from the screen to the crushing device for crushing and screening. The structure is complex and the process is cumbersome. In the prior art, there is also a device for crushing directly through the crushing device, but the crushing device cannot guarantee that the soil clods will be completely crushed to the required accuracy at one time, and the collected crushed soil clods cannot be guaranteed to be fine particles. All the crushing devices installed on the screen need to use driving devices, such as hitting hammers, hitting rods and other devices. All the materials on the screen are ...

AI Technical Summary

Problems solved by technology

[0002] In order to obtain the soil particles with the required precision, the existing soil clod screening device needs to be screened on the sieve and transport the soil clods that cannot pass through the screen from the screen to the crushing device for crushing and screening. The structure is complex and the process is cumbersome. In the prior art, there is also a device for crushing directly through the crushing device, but the crushing device cannot guarantee that the soil clods will be completely crushed to the required accuracy at one time, and the collected crushed soil clods cannot be guaranteed to be fine particles. All the crushing devices installed on the screen need to use driving devices, such as hitting hammers, hitting rods and other devices. All the materials on the screen are crushed, and there are easy crushing dead angles

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