Self-priming electronic metering pump and priming methodology

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.

Description

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AI Technical Summary

Benefits of technology

The patent text describes an electronic metering pump that uses a solenoid driven diaphragm to push liquid through guided checkballs. The pump also uses centrifugal force or displacement of a non-compressible liquid to effect pumping operations. The pump requires a constant supply of fluid to maintain its performance. A foot valve brings the liquid up through tubing out of a container and an injection valve delivers the liquid to the pressurized system. The pump works against back pressure and gravity and must be primed so that the liquid is up beyond the lower set of checkballs to begin delivery. This may be accomplished with a small manual valve at the rear of the pump head, with tubing returning to the container. Once priming is accomplished, the valve is shut off, and the liquid is forced up into the system during pumping. The technical effects of this patent text are to provide a detailed description of an electronic metering pump and its operation, and to ensure that the pump is always primed and ready for use.

Problems solved by technology

The technical problem addressed in this patent is the need for a pumping system that can detect when there is no fluid present in the pump and quickly initiate a priming operation to restore fluid flow. This is important for ensuring the pump operates efficiently and without the need for excessive wear and damage to the pumping mechanism.

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