External mechanical seal

• Main Author: DAI ZHINENG
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2024
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; PISTONS; SEALINGS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model relates to an externally-mounted mechanical seal which comprises a static ring assembly, a movable ring assembly and an elastic compensation assembly driving the movable ring assembly to abut against the static ring assembly all the time. The movable ring assembly comprises a movable ring arranged on the rotating shaft in a sleeving mode, a rubber corrugated pipe arranged on the outer side of the movable ring in a sleeving mode and locked to the rotating shaft in a sealed mode through a fastening ring, and a movable ring base arranged on the outer side of the rubber corrugated pipe in a sleeving mode. And a heat insulation piece for isolating heat transfer between the movable ring and the rubber corrugated pipe is also arranged between the movable ring and the rubber corrugated pipe. The movable ring and the rubber corrugated pipe are separated through the heat insulation piece, so that when the mechanical seal is subjected to dry grinding due to water shortage, the rubber corrugated pipe is