SLIDING PARTS

摘要

A sliding part assembly includes a plurality of circumferentially separated sealed-fluid-accommodating blocks formed on a sealing face of either the stationary ring or the rotating ring so as to communicate with a sealed-fluid-accommodating space. Pumping areas for generating a pumping action due to the stationary and rotating ring sliding in relative rotation are formed on the bottom of the plurality of sealed-fluid-accommodating blocks. The pumping areas formed on the bottom of the plurality of sealed-fluid-accommodating blocks are provided with intake pumping areas operating in a direction so as to draw in the sealed fluid and outflow pumping areas operating in a direction so as to expel the sealed fluid. A seal dam area on the sealing face on which said sealed-fluid-accommodating blocks are formed is formed from a high-lubricity sliding material, the seal dam area being on the opposite side of the sealing face relative to the sealed-fluid side.

主权项

1. A sliding part assembly in which sealing faces of opposed annular stationary and rotating rings are allowed to rotate relative to one another, thereby sealing a sealed fluid present on one side in the radial direction of said sealing faces that slide in said relative rotation, the annular stationary ring being fixed on a fixed side and the annular rotating ring rotating along with a rotating shaft; the sliding parts being characterized in that:
a plurality of circumferentially separated sealed-fluid-accommodating blocks are formed on the sealing face of either said stationary ring or said rotating ring so as to communicate with a sealed-fluid-accommodating space; pumping areas for generating a pumping action due to the stationary and rotating ring sliding in relative rotation are formed on the bottom of said plurality of sealed-fluid-accommodating blocks; the pumping areas formed on the bottom of said plurality of sealed-fluid-accommodating blocks are provided with intake pumping areas operating in a direction so as to draw in the sealed fluid and outflow pumping areas operating in a direction so as to expel the sealed fluid; and a seal dam area on the sealing face on which said sealed-fluid-accommodating blocks are formed is formed from a high-lubricity sliding material, the seal dam area being on the opposite side of the sealing face relative to the sealed-fluid side.