Patent ID: 7523874
Filing Date: 2009-04-28
Classification: A47L,B01F

Abstract:
1. A rotary nozzle of a closed structure, in which an upper end of a rotary-nozzle fixture is mounted rotatably about a longitudinal direction of a rotary-nozzle body, wherein the rotary-nozzle body is divided vertically into two parts, that is, a rotary-nozzle upper part and a rotary-nozzle lower part, which comprise a central straight part and inclined parts formed in parallel to each other on both longitudinal ends of the straight part to be substantially S-shaped in a plan view, the rotary-nozzle lower part is provided with a rotating-shaft hole, which is disposed centrally in a longitudinal direction of the straight part, formed on a top thereof with a circular groove concentric with the rotating-shaft hole, and provided on a back surface thereof with a nozzle bearing part, to which an upper end of the feed nozzle is mounted to be able to swing and which is concentric with the rotating-shaft hole, and wherein a plurality of first liquid reservoir parts disposed predetermined distances offset from the rotating-shaft hole on both sides in the longitudinal direction are arranged on the rotary-nozzle upper part, the first liquid reservoir parts being provided along central axes thereof with injection holes, which are arranged in parallel to one another to be able to perform vertical and sectorial injection in a straight manner in a state, in which injection is not interfered by one another, second liquid reservoir parts are arranged on both ends in the longitudinal direction and provided with horizontal injection holes in a direction of rotation, which perform injection substantially horizontally toward the second liquid reservoir parts to act as a rotational power, and a passage is provided between the second liquid reservoir parts arranged on the both ends to be communicated to the first liquid reservoir parts and the second liquid reservoir parts, and wherein the rotary-nozzle fixture is formed to have a diameter to afford insertion into a hole of the feed nozzle mounted to the feed part and provided at an upper end thereof with a flange, which can be inserted rotatably into the circular groove.