1 results about "Bar screen" patented technology

The invention discloses a coal classifying screen. A distribution plate (14) is arranged below a feeding port (23) in an inclined mode. The two ends of a roller screen shaft (3) are installed on the two sides of a case (2) through bearing pedestals (17) respectively, and the two ends of each screen bar screen shaft (4) are installed on the two sides of the case (2) through bearing pedestals (17) respectively. Spiral guide parts (6) are arranged in the roller screen shaft (3) and the screen bar screen shafts (4) respectively and composed of forward spiral guide parts (6.1) and backward spiral guide parts (6.2), the forward spiral guide parts (6.1) are fixedly installed on one side inside the roller screen shaft (3) and one sides inside the screen bar screen shafts (4) respectively, and the backward spiral guide parts (6.2) are fixedly installed on the other side inside the roller screen shaft (3) and the other sides inside the screen bar screen shafts (4) respectively. Anti-blocking holes (10) are formed in the two ends of the roller screen shaft (3) respectively, and anti-blocking holes (10) are formed in the two ends of each screen bar screen shaft (4) respectively. The coal classifying screen is uniform in distribution and high in impact resistance, a screen surface and the screen shafts are not blocked, the requirement for two or more particle sizes of discharged materials is met, and spare parts are convenient to maintain and replace.