Self-priming electronic metering pump and priming methodology
First Claim
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1. A self-priming metering pump system comprising:
- an electronic metering pump;
a flow detector in fluid communication with said electronic metering pump which senses the absence of fluid flow output from said electronic metering pump during operation and initiates an electronic control signal;
an electronic controller in electronic communication with said flow detector which receives said electronic control signal;
a check valve in fluid communication with said flow detector and said electronic metering pump and in electronic communication with said electronic controller, said check valve being selectively operated by said electronic control signal from said electronic controller to facilitate return of fluid flow output from said electronic metering pump.
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Abstract
An electronic metering pump system has a fluid flow detector for monitoring the output of the electronic metering pump to detect loss of prime. The fluid flow detector, upon detecting loss of fluid flow, initiates an electronic signal to a downstream solenoid valve which closes the output conduit of the electronic metering pump and facilitates the repriming of the pump and return of output fluid flow. The electronic signal may also be utilized to initiate an warning or alarm to an operator, either directly or by data network, that the system requires attention.
36 Citations
14 Claims
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1. A self-priming metering pump system comprising:
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an electronic metering pump; a flow detector in fluid communication with said electronic metering pump which senses the absence of fluid flow output from said electronic metering pump during operation and initiates an electronic control signal; an electronic controller in electronic communication with said flow detector which receives said electronic control signal; a check valve in fluid communication with said flow detector and said electronic metering pump and in electronic communication with said electronic controller, said check valve being selectively operated by said electronic control signal from said electronic controller to facilitate return of fluid flow output from said electronic metering pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for self-priming an electronic metering pump system, said method comprising the steps of:
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affixing a flow detector to the output of said electronic metering pump which senses the absence of fluid flow output from said electronic metering pump during operation; initiating an electronic control signal from said flow detector to an electronic controller upon detection of a reduction of fluid flow output from said electronic metering pump; affixing a selectively operative electronic check valve to the output conduit of said electronic metering pump which receives said electronic control signal and operates to facilitate return of fluid flow output from said electronic metering pump. - View Dependent Claims (11, 12, 13, 14)
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Specification