Electric heating and temperature control for process pumps
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United States of America Patent
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Jul 31, 2012
Grant Date -
Jan 13, 2011
app pub date -
Jul 9, 2009
filing date -
Jul 9, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Electrically heated pumps are disclosed that include electric heating elements that are linked to a process controller. In a magnetic drive pump, the external jacketing on the pump head, pressure relief valve and casing can be replaced with electric heating elements attached to the pump through the use of adhesive or mechanical fastening devices. For the bracket portion of the magnetic drive pump, the external jacketing can be removed and the heating element is attached to the canister that contains the liquid and that is located between the inner and outer magnetic drive assemblies. Through the use of appropriately placed thermocouples in the head, pressure relief valve, casing, bracket, canister, etc., and a single or multi-channel on/off, proportional or PID controller, the heating zones may be linked together, monitored and controlled to the application requirements. The disclosed pump designs may also be applied to auxiliary equipment such as strainers.
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