Return air cleaning device of winnowing machine

• Main Authors: REN ZONGYI, XIANG HUANYI, WANG HUIJUAN
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

The utility model relates to a return air cleaning device of a winnowing machine, a return air filter screen is an arc-shaped filter screen, and a cleaning scraper assembly is arranged on the inner side of the arc shape of the return air filter screen; and the cleaning scraper assembly is driven by the gear motor to axially rotate along the circular-arc-shaped circle center position of the return air filter screen so as to clean the return air filter screen. The cleaning quality is guaranteed by connecting a bogie and a scraper connecting plate in the cleaning scraper assembly with a scraper. A long hole is formed in the scraper connecting plate, the length of the scraper can be adjusted, and the service life of the scraper is prolonged. The return air filter screen is arc-shaped, the air passing area is increased, the return air utilization rate is improved, and therefore the winnowing precision is improved, the weight is reduced, and corrosion resistance is achieved. The speed reduction motor drives the cle