Mixed type seal for disc pump

• Main Authors: YU HONG, ZHUANG XIAODONG, XIA CHAOQUN, LIU QI, QU YANLONG, GONG JIE, ZHANG PENGPENG
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a mixed seal for a disc pump, which comprises a shaft sleeve, and a lip seal assembly, a medium side moving ring, a medium side static ring, an atmosphere side static ring and an atmosphere side moving ring which are sequentially arranged from the medium side along the axis of the shaft sleeve, the shaft sleeve and the lip seal assembly form a first seal, and the medium side moving ring and the medium side static ring form a second seal. The atmosphere side moving ring and the atmosphere side static ring form a third seal; the first seal and the second seal are both non-contact seals, and the third seal is a liquid film seal; a cavity A is formed between the first seal and the second seal, a cavity B is formed between the second seal and the third seal, and the cavity B is filled with sealing liquid. A medium is isolated through the cavity A, the medium is prevented from making contact with the sealing end face, meanwhile, heat generated in the working process is taken away through