公开(公告)号：US20150247504A1

公开(公告)日：2015-09-03

申请号：US14193324

申请日：2014-02-28

Applicant: Flow Control LLC.

Inventor： Randall H. MOORMANN ,  Todd R. RAABE

IPC: F04D15/02 ,  F16K15/14 ,  F04D1/04

CPC classification number: F04D15/0227 ,  F04D1/04 ,  F04D15/0022 ,  F04D29/4293 ,  F16K15/147

Abstract: Apparatus for providing liquid from a reservoir of liquid contained in a vehicle/vessel or other equipment, featuring a pump for pumping liquid having a pump housing outlet nozzle; and a back flow preventer assembly having an inlet end to couple to the outlet nozzle, having an outlet end to couple to an outlet hose for connecting to an outlet exiting a wall of a vehicle, vessel or other equipment, and having a duckbill-type check valve to provide liquid being pumped in one direction from the reservoir of the vehicle, vessel or other equipment to the outlet exiting the wall of the vehicle, vessel or other equipment via the outlet hose, and also configured to prevent residue liquid left in the outlet hose from flowing back into the pump and returning to the reservoir once the pump has completed pumping if the outlet exiting the wall of the vehicle, vessel or other equipment is above the outlet nozzle, so as to prevent on an on/off oscillation of the pump depending on the volume of residue liquid left in the outlet hose.

Abstract translation: 用于从容纳在车辆/容器或其他设备中的液体容器提供液体的装置，其特征在于用于泵送具有泵壳体出口喷嘴的液体的泵; 以及具有入口端以联接到出口喷嘴的回流防止器组件，其具有出口端以耦合到出口软管，用于连接到离开车辆，容器或其他设备的壁的出口，并且具有鸭嘴型 止回阀，以将从一个方向被泵送的液体从车辆，容器或其他设备的贮存器经由出口软管排出到离开车辆，容器或其他设备的壁的出口，并且还被配置为防止留在 如果离开车辆，船只或其他设备的墙壁的出口在出口喷嘴之上，一旦泵完成抽水，出口软管就会流回到泵中并返回到储存器，以防止开/关振荡 泵取决于出口软管中残留液体的体积。