Base dynamic and static sealing device for ZGM95G type coal mill

• Main Authors: CHENG HONGBING, WEI LAI, LI YING, ZHANG PENGBO, YUAN BINBIN
• Format: Patent
• Language: Chinese; English
• Published: 28.01.2022
• Subjects: BLASTING; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MILLING GRAIN; PERFORMING OPERATIONS; PISTONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; SEALINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The utility model discloses a base dynamic and static sealing device for a ZGM95G type coal mill. Along with operation of the coal mill, an upper seal gradually loses efficacy due to the abrasion of pebble coal carried by the mixed air to the radial seal and the abrasion to the shaft shoulder of the transmission disc. The sealing device comprises a sealing box (3) and a coal mill driving disc (1), a dynamic and static upper sealing device (2) is arranged between the coal mill driving disc and the upper part of the sealing box, and a lower sealing device (4) is fixed between the coal mill driving disc and the lower part of the sealing box; the dynamic and static upper sealing device comprises a flange plate (5), a metal rotary sealing ring (6), a metal slag stopping protecting ring (7) and a special-shaped sealing piece (8); and the flange plate is fixed on the lower surface of the driving disc through a bolt, the metal rotary sealing ring is fixed on the outer ring surface of the flange plate, the metal slag