Assembly of complex mechanical seal for vertical multiple stage pump
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United States of America Patent
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-
Oct 19, 2004
Grant Date -
Oct 16, 2003
app pub date -
Sep 17, 2002
filing date -
Apr 15, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A complex mechanical seal for vertical multiple stage pump includes a hollow cylinder fixed plate positioned in the vertical multiple stage pump. It is coupled to a fixed barrel. The bottom hole of fixed barrel is used as the passage of pump axle. A long axle bushing in the inner part of the fixed plate is fixed on the pump axle. A balance plate is positioned below long axle bushing. The circumference of balance plate has a flange. The mechanical seal is fixed on the upper space of the balance plate and fixed on long axle bushing. A return water passage is connected to the upper part of balance plate and to inlet of pump, and the high pressure region. A and low pressure region B, are needed as the pushing force. The complex structure of balance plate and mechanical seal is simultaneously easier and quicker to assemble and disassemble.
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