Liquid heaters and vaporizers – Cleaning – Fluid jet
Patent
1989-12-18
1990-08-07
Coe, Philip R.
Liquid heaters and vaporizers
Cleaning
Fluid jet
153161, 122382, 134181, F28G 316
Patent
active
049458620
ABSTRACT:
An improved two-dimensional shuttle rotary cleaning device includes a frame with which is connected a bracket adapted for pivotal movement between first and second positions normal and parallel to the frame, respectively. A cleaning assembly is slidably connected with the bracket for cleaning the exterior surfaces of pendant tubes of a boiler. The cleaning assembly includes a tubular lance and a rotary union connecting the lance with the bracket and rotating the lance about its axis. An air cylinder is connected with the cleaning assembly for reciprocating the assembly relative to the bracket along the axis of the lance. Pressurized cleaning fluid is supplied to the lance via the rotary union. The fluid exits the lance via the plurality of radial openings, whereby the cleaning fluid is directed under pressure against the surfaces of the pendant tubes to remove slag and other built up materials therefrom. When the pivotal bracket is in the first position, the lance is arranged between and normal to the pendant tubes for cleaning the exterior surfaces thereof when the rotary union and air cylinder are operated. When the bracket is pivoted to the second position, the lance is swung from between the pendant tubes to a position parallel to the tubes so that the frame may be moved to a position adjacent the next row of tubes for cleaning.
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Coe Philip R.
Vadakin, Inc.
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