Rotary nozzle cleaning apparatus with improved stem

摘要

A rotary nozzle cleaning apparatus is provided with an improved stem enabling an optimum flow of pressurized fluid while retaining structural strength. The stem is tubular in shape and formed with a series of triangular openings through the wall thereof. Alternating triangular openings are oriented with their apexes facing downstream of the fluid with interspersed openings oriented with their apexes facing upstream. The triangular openings are isosceles in configuration. The stem may be formed integral with an inlet cap of the cleaning apparatus or as a separate component.

主权项

1. A rotary nozzle cleaning apparatus, comprising:
a. a hollow inlet cap for receiving a fluid; b. a rotor positioned downstream of the inlet cap and driven rotationally by the fluid; c. a gear train in connection with and driven by the rotor; d. a first housing in fluid communication with the inlet cap and driven by the gear train to rotate around a first axis; e. a second housing in fluid communication with and driven by the first housing to rotate around a second axis; f. a plurality of nozzles mounted to the second housing and in fluid communication therewith; and g. a substantially tubular stem in fluid communication with the inlet cap and positioned within the first housing; h. wherein a series of circumferentially spaced, triangular openings are formed through a tubular wall of the stem for conveying the fluid to the second housing.