US 11,988,203 B2
Modular metering pump system
Brian S. Whitmore, Sr., Spring, TX (US)
Filed by Brian S. Whitmore, Sr., Spring, TX (US)
Filed on Jul. 25, 2023, as Appl. No. 18/358,507.
Claims priority of provisional application 63/453,727, filed on Mar. 21, 2023.
Claims priority of provisional application 63/392,440, filed on Jul. 26, 2022.
Prior Publication US 2024/0035465 A1, Feb. 1, 2024
Int. Cl. F04B 49/00 (2006.01); F04B 43/02 (2006.01); F04B 43/12 (2006.01); F04B 51/00 (2006.01); F04B 53/16 (2006.01)
CPC F04B 49/00 (2013.01) [F04B 43/12 (2013.01); F04B 51/00 (2013.01); F04B 43/02 (2013.01); F04B 53/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a chemical feed rate to a destination stock, the method comprising:
using a metering pump system to supply an aqueous chemical at a desired feed rate through a system discharge, the metering pump system comprising:
a housing having a floor extending horizontally forward from a vertical panel;
a first mount supporting a first metering pump above the floor;
a second mount supporting a second metering pump above the floor;
a system inlet and the system discharge located aft of the first mount and the second mount;
a first inlet conduit connected to the first metering pump forward of the first mount, extending through the floor, and connected to the system discharge aft of the first mount;
a second inlet conduit connected to the second metering pump forward of the second mount, extending through the floor, and connected to the system discharge aft of the second mount;
a first outlet conduit connected to the first metering pump forward of the first mount, extending through the floor, and connected to the system discharge aft of the first mount;
a second outlet conduit connected to the second metering pump forward of the second mount, extending through the floor, and connected to the system discharge aft of the second mount; and
a flowrate sensor in one of the system inlet or the system discharge;
operating the first metering pump at a calibrated feed rate corresponding to the desired feed rate;
obtaining with the flowrate sensor an actual feed rate of the metering pump system while operating at the calibrated feed rate;
determining a deviation exists between the actual feed rate and the desired feed rate; and
changing, in response to the deviation, a pump speed of one or both of the first metering pump and the second metering pump to substantially achieve the desired feed rate.