초록 ▼

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

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.

대표청구항 ▼

1. A sliding part assembly comprising an opposed annular stationary ring and a rotating ring having sealing faces arranged to rotate relative to one another, thereby sealing a sealed fluid present on one side in a radial direction of said sealing faces that slide in said relative rotation, the annul

1. A sliding part assembly comprising an opposed annular stationary ring and a rotating ring having sealing faces arranged to rotate relative to one another, thereby sealing a sealed fluid present on one side in a 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; said sliding parts assembly comprising, in combination: a plurality of circumferentially separated sealed-fluid-accommodating blocks 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 formed on a bottom of said plurality of sealed-fluid-accommodating blocks;a plurality of linear indentations formed in each of the pumping areas;wherein 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;apexes of the linear indentation of the pumping areas are set lower than the sealing face on which said sealed-fluid-accommodating blocks are formed; anda sealed-fluid side area of the sealing face on which said sealed-fluid-accommodating blocks are formed is formed from a hard material, a seal dam area of the sealing face being on an opposite side of the sealed-fluid side is formed from a high-lubricity sliding material different from the hard material. 2. The sliding part assembly according to claim 1, wherein said sealed-fluid-accommodating blocks, pumping areas, and seal dam area formed from the high-lubricity sliding material are formed as stationary rings made of a soft material. 3. The sliding part assembly according to claim 1, wherein said sealed-fluid-accommodating blocks, pumping areas, and seal dam area formed from the high-lubricity sliding material are formed as rotating rings made of a hard material. 4. The sliding part assembly according to claim 1, wherein the seal dam area formed from said high-lubricity sliding material is formed integrally with said stationary ring or said rotating ring. 5. The sliding part assembly according to claim 1, wherein the seal dam area formed from said high-lubricity sliding material is formed separately from said stationary ring or said rotating ring, and is integrated therewith by bonding. 6. The sliding part assembly according to claim 1, wherein said high-lubricity sliding material is a material containing a solid lubricant selected from the group consisting of PTFE, MoS2, WS2, graphite and BN. 7. The sliding part assembly according to claim 1, wherein said high-lubricity sliding material is a material containing a lubricative oil. 8. The sliding part assembly according to claim 2, wherein the seal dam area formed from said high-lubricity sliding material is formed integrally with said stationary ring or said rotating ring. 9. The sliding part assembly according to claim 3, wherein the seal dam area formed from said high-lubricity sliding material is formed integrally with said stationary ring or said rotating ring. 10. The sliding part assembly according to claim 2, wherein the seal dam area formed from said high-lubricity sliding material is formed separately from said stationary ring or said rotating ring, and is integrated therewith by bonding. 11. The sliding part assembly according to claim 3, wherein the seal dam area formed from said high-lubricity sliding material is formed separately from said stationary ring or said rotating ring, and is integrated therewith by bonding. 12. The sliding part assembly according to claim 2, wherein said high-lubricity sliding material is a material containing a solid lubricant selected from the group consisting of PTFE, MoS2, WS2, graphite and BN. 13. The sliding part assembly according to claim 3, wherein said high-lubricity sliding material is a material containing a solid lubricant selected from the group consisting of PTFE, MoS2, WS2, graphite and BN. 14. The sliding part assembly according to claim 4, wherein said high-lubricity sliding material is a material containing a solid lubricant selected from the group consisting of PTFE, MoS2, WS2, graphite and BN. 15. The sliding part assembly according to claim 5, wherein said high-lubricity sliding material is a material containing a solid lubricant selected from the group consisting of PTFE, MoS2, WS2, graphite and BN. 16. The sliding part assembly according to claim 2, wherein said high-lubricity sliding material is a material containing a lubricative oil. 17. The sliding part assembly according to claim 3, wherein said high-lubricity sliding material is a material containing a lubricative oil. 18. The sliding part assembly according to claim 4, wherein said high-lubricity sliding material is a material containing a lubricative oil. 19. The sliding part assembly according to claim 5, wherein said high-lubricity sliding material is a material containing a lubricative oil.