Mechanical sealing structure of permanent magnet motor pump with high sealing performance

• Main Authors: WEI HONGTAO, WANG ZONGHONG, SUN ZHIXIA, LI MENGYANG
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention discloses a high-leakproofness permanent magnet motor pump mechanical sealing structure, and particularly relates to the technical field of motor pumps, the high-leakproofness permanent magnet motor pump mechanical sealing structure comprises a welding seat, a connecting ring is arranged at the bottom of the welding seat, a motor shaft is welded in the welding seat, the connecting ring is arranged on the motor shaft in a sleeving manner, and a connecting seat is welded at the top of the welding seat; the section of the connecting base is in a regular dodecagon shape, and a sealing assembly is arranged on the outer side of the connecting base. By arranging the connecting base, the sealing assembly and the limiting cover, long-time effective sealing of the motor shaft can be guaranteed, and when the permanent magnet motor pump runs, hydrophobic lubricating oil uniformly fills the space between the annular sealing cavity and the centrifugal cover under the action of centrifugal force, so that the s