Gravity grading and stoning machine for grains

Abstract

The invention relates to a gravity grading and stoning machine for grains, which comprises a screen body, a wind suction device, a feeding device, vibrating motors, a discharge port and a vibrating support, wherein an upper-layer screen surface and a lower-layer screen surface are arranged in the screen body, the upper-layer screen surface comprises an upper-layer screen piece and a material equalizing section, and the lower-layer screen surface comprises a lower-layer screen piece and a fine screening plate. The upper-layer screen surface is communicated with a light-weight material outlet, the lower-layer screen surface is communicated with a heavy-weight material outlet, a channel connected with the fine screening plate is arranged at the top end of the material equalizing section, and the top end of the fine screening plate is communicated with a stone discharge port. The feeding device is provided with a material receiving plate, a pressure control plate, a material equalizing plate and a material receiving diversion plate. The vibrating motors are respectively mounted on two side walls of the screen body, and the upper-layer screen piece and the lower-layer screen piece are mounted on a mounting frame on the side surfaces of the screen body through bolts in a hanging way. According to the gravity grading and stoning machine for grains, disclosed by the invention, through improvement to the feeding device, materials are equalized three times on the feeding device and uniformly distributed, therefore the grading and stoning effect is improved. The external vibrating motors are reasonable in vibration direction and low in power consumption. The upper-layer screen piece and the lower-layer screen piece are mounted in a hanging way, and the using performance of the screen pieces is better.

Description

technical field [0001] The invention belongs to the technical field of grain processing equipment, and relates to equipment for grain grading and impurity removal, in particular to a grain gravity grading destoner. Background technique [0002] In the grain processing industry, grain quality grading and dust removal and cleaning equipment are crucial to the quality of grain products. Gravity grading and destoner machine is widely used in the grain processing industry for grain grading and purification and dust removal equipment. Gravity classifying de-stoner machine is to use the difference of suspension speed between grain particles and heavy impurities (such as stones, metal, glass, etc.) and the difference of suspension speed between heavy and light grain particles to continuously remove stone and Grading not only separates light and heavy impurities, but also effectively classifies heavy and light grain particles. The gravity grading destoner of the prior art has a...

AI Technical Summary

Problems solved by technology

The gravity grading destoner in the prior art has a good destoner effect, but it is not easy to separate out 1%-2% of low-quality wheat

The main problems are: 1. The proportion of separated light wheat is relatively high, 2. There is too much wheat in the stone, 3. The operation is unstable and often changes

However, this utility model patent does not solve the problem of poor classification quality caused by the above-mentioned uneven feeding

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