Method for granular resin material delivery using fill time monitoring and alarm for filter check
AssigneeNovatec, Inc.
InventorsConrad Bessemer, James Zinski
Life of this patent
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Abstract
Apparatus for pneumatically supplying granular material from a supply to at least one receiver for temporary storage of the granular material prior to transfer to a process machine including a timer for measuring time required for loading the receiver and a microprocessor for comparing times measured by the timer and triggering an alarm when consecutively compared times increase by a preselected amount and a method and apparatus for determining when a filter of a granular material receiver providing granular material to an associated process machine, is at reduced filtering efficiency.
Claims19
Apparatus for pneumatically supplying granular material from a supply to at least one receiver for temporary storage of the granular material prior to transfer to a process machine, comprising:
- a. a vacuum pump having a suction intake;
- b. a first conduit connecting the granular material supply to the receiver;
- c. a second conduit connecting the receiver to the vacuum pump suction intake;
- d. a timer for measuring time required for loading the receiver with granular material whenever process machine needs additional material and the receiver is loaded;
- e. a microprocessor for comparing times measured by the timer and triggering an alarm when consecutively compared times increase by a preselected amount.
Apparatus for determining when a filter, of a granular material receiver providing granular material to an associated process machine, is at reduced filtering efficiency comprising:
- a. a timer for measuring time required for loading the receiver with granular material whenever the associated process machine needs additional material and the receiver is loaded in response to that need;
- b. a microprocessor for comparing times measured by the timer and triggering an alarm when consecutively compared times increase by a preselected amount.
A method for determining when a filter, of a granular material receiver providing granular material to an associated process machine, is at reduced filtering efficiency, comprising:
- a. measuring time required for loading the receiver with granular material when the receiver is loaded in response to the associated process machine requiring granular material;
- and
- b. comparing the measured times and triggering an alarm upon a measured time increasing over a previously measured time by a predetermined amount.
Dependencies are inferred from the claim text.