‌The main reasons for poor circulation of shot blasting machines include loose elevator belts, gaps in the shot storage bin, worn shot recovery scrapers, agglomeration of shot conveying pipes, and excessive impurities in the drum screen. ‌

First, loose elevator belts are one of the common causes of poor circulation of shot. Loose belts can cause the elevator belt to slip, which in turn affects the conveying of shot. The solution is to tighten and adjust the elevator belt to ensure that its tension is appropriate. ‌

Second, gaps in the shot storage bin can also lead to a reduction in the circulation of shot. The gaps in the storage bin will allow the shot to leak out and reduce the circulation. The storage bin should be repaired in time to ensure its sealing. ‌

In addition, wear of the shot recovery scraper is also an important factor. The wear of the scraper will affect the recovery efficiency of the shot and lead to poor circulation. The solution is to ｒｅｐｌａｃｅ the worn scraper in time to ensure its normal operation. ‌

In addition, agglomeration of the shot conveying pipe will also block the circulation of the shot. The agglomeration in the conveying pipe will hinder the smooth flow of the shot. The solution is to check the cause of the agglomeration and clean up the agglomerates in the conveying pipe. ‌

Finally, too much impurities in the drum screen will also block the screen holes and affect the screening of the projectiles. The solution is to clean the impurities in the drum screen to ensure that the screen holes are unobstructed.