Crushing needle for pearl mill

• Main Authors: JI WENYUN, QIAN AIMIN, LU JIANJUN, LU YE, DI LIANGLIANG, FAN QINGQING
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2014
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; TRANSPORTING

The utility model provides a crushing needle for a pearl mill. The crushing needle comprises a threaded screw-in part and a crushing needle head, wherein an inward hole is formed in the center of the bottom of the crushing needle head; a groove is formed in the edge of the bottom of the crushing needle head, and two symmetrical small holes communicated with each other are also formed in the crushing needle head at the upper part of the groove; a raised head of the threaded screw-in part is inserted into the holes of the crushing needle head in a matching mode; a concave surface matched with the small holes and the groove is arranged on the raised head; the threaded screw-in part is welded and fixed on the crushing needle head through the small holes, the groove and the concave surface matched with the small holes and the groove. The crushing needle provided by the utility model has the advantages that the threaded screw-in part is made of common carbon steel, the overall toughness of the crushing needle is gr