Fecha de publicación: 12/08/2022 Fuente: WIPO "hemp" An opening and impurity removing combined system used before fibrilia degumming comprises a first fibrilia box, a conveying belt is arranged on one side of the outer portion of the first fibrilia box, a photoelectric sensor is arranged on one side of the first fibrilia box, conveying curtains are arranged between the conveying belt and the first fibrilia box, nail curtains are arranged between the conveying curtains in the first fibrilia box, and a carding beater is arranged at the position, opposite to the nail curtains, in the first fibrilia box. The first hemp box is connected with a hemp condensing device, a second hemp box is arranged below the hemp condensing device, and an impurity removing bin is arranged on one side, far away from the first hemp box, of the second hemp box. Equipment jamming caused in the subsequent machining process is prevented; when the dust is conveyed into the jute condensing device in a limited mode, small dust and other impurities are sucked out by the air suction pipe, and dust in the production process is reduced.