Dispensing – Automatic control – Constant weight – volume or pressure control by output
Patent
1998-10-15
2000-10-17
Shaver, Kevin
Dispensing
Automatic control
Constant weight, volume or pressure control by output
2221462, 2221465, 222318, 222330, 222331, B67D 514, B67D 562, B67D 540
Patent
active
061317705
ABSTRACT:
A pump system for delivering a polymer melt adhesive to an applicator includes the components: a body having mounted thereon a hopper containing a molten polymer, a dual stream pump mounted on the body for receiving a melt from the hopper and discharging dual streams, a first flow course formed in the body interconnecting one pump stream with an outlet from the body, a flow meter for sensing the flow through the first course, and a second flow course interconnecting the other pump stream to a second outlet from the body. A pressure relief valve disposed in the first and second flow courses is activated in response to a predetermined pressure in each course due to downstream failure and diverts the flow therein from the body outlet to the hopper. Diversion of the flow to the hopper changes the flow rate through the flow meter which automatically activates controls to shutdown the system or activate an alarm. The body contains plugs for converting the apparatus from a dual pump stream system to a single pump system.
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Deal David
Nordson Corporation
Shaver Kevin
LandOfFree
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