Apparatus for cleaning tubes of a heat exchanger
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United States of America Patent
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May 24, 2016
Grant Date -
Aug 16, 2012
app pub date -
Oct 7, 2010
filing date -
Oct 9, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus is disclosed for supporting, rotating and advancing a rigid lance when cleaning the interior of a tube of a heat exchanger. The apparatus comprises a longitudinally extending aluminium body 10 defining a closed conduit 12 and a C-shaped channel 14 sharing a common partition wall and a rigid lance is located within the C-shaped channel. A first motor assembly 20 rotates the lance 26 and feeds water under pressure into the lance 26 through a rotary coupling 30. The first motor assembly 20 is slidable along, and guided by, the C-shaped channel 14, by a second motor assembly 30 which serves to advance and retract the lance 26. The second motor assembly 30 is connected to pull the first motor assembly in both directions along the C-shaped channel by a flexible drive element 34 having a run housed in the closed conduit 12.
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