Patent ID: 7703461

Claim:
A rotary rinser comprising: a stationary member in which a first supply passage and a second supply passage are formed; a rotary member, located below the stationary member, rotatable about a central vertical axis and disposed to be slidable with respect to the stationary member, the rotary member comprising a first annular projection projecting upward at a first elevation and a second annular projection projecting upward at a second elevation together defining an annular groove between the stationary member and the rotary member to prevent a fluid admixture, and comprising a first discharge passage located within the first annular projection and a second discharge passage located within the second annular projection configured to move into and out of communication with the first and second supply passages, respectively, as the rotary member rotates, and are disposed such that during rotation of the rotary member, when the discharge passages are connected to the supply passages in the stationary member, a fluid is fed into a cleansing nozzle to be injected into a vessel; wherein the supply passages and the discharge passages come into contact at respective sliding surfaces located at a junction of the stationary member and each one of the annular projections, the sliding surfaces being disposed at different relative elevations and at different radial positions relative to the central axis.