Mechanical sealing chamber structure with circulating flushing, cooling and lubricating functions for single-screw pump

The utility model discloses a mechanical seal chamber structure with circulating flushing, cooling and lubricating functions for a single-screw pump, which relates to the technical field of single-screw pumps and comprises a machine body, a mechanical seal cover, a mechanical seal box and a connecting frame, the mechanical seal cover and a medium-end mechanical seal static ring form a medium-end component, and the mechanical seal box and an atmosphere-end mechanical seal static ring form an atmosphere-end component. The medium end assembly is used for being matched with the medium end assembly to form an assembly, the assembly is arranged on the transmission shaft in a relatively rotating and sleeving mode, the transmission shaft is tightly sleeved with the mechanical seal moving ring, and the sealing faces on the two sides of the mechanical seal moving ring are in corresponding contact sealing with the sealing faces of the medium end mechanical seal static ring and the atmosphere end mechanical seal static r