公开(公告)号：US3904319A

公开(公告)日：1975-09-09

申请号：US44875274

申请日：1974-03-06

申请人： SYKES PUMPS LTD

发明人： PAISH HAROLD PHILIP SIDNEY ,  SMITH HENRY

IPC分类号： F04D9/00 ,  F04D9/02 ,  F04D9/04

CPC分类号： F04D9/04 ,  F04D9/001 ,  F04D9/02 ,  F04D9/041

摘要： A centrifugal liquid pump of the kind wherein an auxiliary vacuum pump assists in priming and removing unwanted gas during subsequent operation, is provided with a primary chamber to contain liquid and to receive unwanted gas which has entered the pump, an upper port in said chamber for removal of gas by said vacuum pump, a float-operated valve device to control said port, a secondary chamber connected at its upper part to said port, and a valve-controlled return passageway extending from a lower part of the secondary chamber to said primary chamber. The secondary chamber has an upper opening to said vacuum source whereby gas from said primary chamber is extracted via the secondary chamber in which entrained liquid is deposited and, on opening said secondary chamber to atmosphere, the occurring pressure differential between the chambers discharges deposited liquid in the secondary chamber through said return passageway to the primary chamber. The float-operated valve device may be arranged to open said secondary chamber to atmosphere when the valve device operates to close said port, and a manually-operable valve may be provided to admit atmospheric air to said secondary chamber and effect discharge of the deposited liquid, independently of the floatoperated valve device.

摘要翻译： 这种类型的离心液体泵，其中辅助真空泵在随后的操作期间辅助起动和去除不需要的气体，设置有主室以容纳液体并且接收已经进入泵的不需要的气体，所述室中的上部端口用于 通过所述真空泵去除气体，用于控制所述端口的浮动操作阀装置，在其上部连接到所述端口的二级室，以及从所述第二室的下部延伸到所述主室的阀控返回通道 房间。 次级室具有到所述真空源的上部开口，从而来自所述初级室的气体经由沉积夹带液体的二级室抽出，并且在将所述二级室打开到大气中时，室之间的所产生的压力差将排出的沉积液体排出 次级室通过所述返回通道进入主室。