Dust raising, screening and impurity removing device for unhusked rice

Abstract

The invention discloses a dust raising, screening and impurity removing device for unhusked rice. The device comprises a feeding hopper, a blocking mechanism, a dust raising cavity, a motor, a screening cavity and screen plates; the feeding hopper is arranged at the upper end of the dust raising cavity, the lower end of the dust raising cavity communicates with the screening cavity, and the blocking mechanism is arranged at the lower end of the feeding hopper; fan blades are arranged on the left side of the dust raising cavity, and a rotating shaft located at the left ends of the fan blades isrotationally connected with an output shaft of the motor through a belt; and three groups of supporting plates are symmetrically arranged on the inner side of the screening cavity, each screen plateis arranged on the inner sides of every two symmetric supporting plates, screen holes are formed in the bottoms of the screen plates on the three groups of supporting plates correspondingly, and the left ends of the screen plates abut against eccentric wheels fixedly arranged on a rotary shaft. According to the dust raising, screening and impurity removing device for the unhusked rice, the designis novel, the eccentric wheels mutually cooperate with springs to drive the three screen plates to synchronously move left and right in a reciprocating mode when the eccentric wheels rotate, so that the screening efficiency is high; and meanwhile, the three screen plates can effectively remove large-particle impurities and small-particle impurities in the unhusked rice, so that the screening efficiency is high, and the practicability is high.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a rice dust screening and impurity removal device. Background technique [0002] Agriculture is an important industrial sector in the national economy and occupies an important position in the entire national economy of our country. With our country's emphasis on agriculture, China's agriculture has developed rapidly this year, and 22% of the world's population has been fed with limited arable land in China, which has made remarkable achievements. In order to improve the efficiency of agricultural operations, agricultural machinery has been widely promoted. In particular, the application of large and medium-sized agricultural machinery such as combine harvesters has greatly improved the production efficiency of agricultural work. [0003] However, the rice harvested by combine harvesters often contains dust, rice husks, straw, etc., so farmers need to screen the dried grains to remov...

AI Technical Summary

Problems solved by technology

However, this traditional impurity removal device makes the labor intensity of farmers very high, and at the same time, the heavier impurities cannot be screened out

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