专利检索 ap:("WANNER ENGINEERING, INC.") AND inv:"FEATHERSTONE, Dustin" 第 1 页

1.

发明申请
DEVICE FOR PROTECTING A DIAPHRAGM PUMP FROM PRESSURE DIFFERENTIAL 审中-公开

公开(公告)号：WO2019204497A1

公开(公告)日：2019-10-24

申请号：PCT/US2019/027944

申请日：2019-04-17

申请人： WANNER ENGINEERING, INC.

发明人： MEINZ, Peter , FEATHERSTONE, Dustin , HOLLISTER, Matthew

IPC分类号： F04B43/00 , F04B43/067 , F04B45/033

摘要： A diaphragm pump includes a transfer chamber containing hydraulic fluid and a pumping chamber for fluid to be pumped. A connecting assembly includes a plunger extending to the transfer chamber. A diaphragm connects to the connecting assembly and separates the transfer chamber and the pumping chamber. A pressure protection device mounts to the connecting assembly and is configured to seal against the transfer chamber when pressure differential, including reverse pressure differential, across the diaphragm exceeds a predetermined value. The pressure protection device is intermediate the plunger and the diaphragm and supports the diaphragm when there is excess pressure differential across the diaphragm.