公开(公告)号：US20170298920A1

公开(公告)日：2017-10-19

申请号：US15474523

申请日：2017-03-30

Applicant: FLOW CONTROL LLC

Inventor： Christopher H. VERDUGO ,  Humberto V. MEZA ,  David ALLEN ,  Rick HAYASHI

IPC: F04B43/073 ,  F04B53/16 ,  F04B43/02

CPC classification number: F04B43/0736 ,  F04B43/026 ,  F04B53/16 ,  F04B53/22

Abstract: A modular pump features a gas-control-and-drive-unit (GCDU), a cartridge-style-pumping-module (CSPU) and a retainer clip (RC). The GCDU includes a GCDU-housing to receive/provide gas to a gas-passageway causing a GCDU-force in one direction; an actuator-rod-and-slide-valve-arrangement (AR/SVA) to respond to a CSPM-force and exhaust the gas from the GCDU-housing causing a GCDU-exhaustion-force in an opposite direction; and a GCDU-coupling-member. The CSPM includes a CSPM-housing to receive a fluid to be pumped, and a piston-and-dual-diaphragm-arrangement (PDDA) to respond to the GCDU-force, provide the CSPM-force and pump the fluid from the CSPM, and to respond to the GCDU-exhaustion-force and pump the fluid from the CSPM. The CSPM-housing includes a CSPM coupling member to detachably couple to the GCDU-coupling-member. The RC detachably couples a piston of the PDDA and an actuator rod of the AR/SVA, so the CSPM attaches/detaches from the GCDU using a three-step process for field replacement using the RC.