公开(公告)号：WO1986004984A1

公开(公告)日：1986-08-28

申请号：PCT/US1986000439

申请日：1986-02-26

Applicant: EMSON RESEARCH INCORPORATED

Inventor： EMSON RESEARCH INCORPORATED ,  MESHBERG, Philip

IPC: G01F11/00

CPC classification number: B05B11/3032 ,  A47K5/1201 ,  B05B11/00412 ,  B05B11/00416 ,  B05B11/3094

Abstract: Vacuum pump dispenser having a pumping compartment with a self sealing spout and a primary compartment. The problem associated with conventional vacuum pumps is that the sealing spouts may not seal after each use of the dispenser thereby contaminating the material that has not been dispensed. The present invention provides an improved sealing spout which opens to dispense material when the pumping compartment is actuated and closes to seal the spout when deactuated. The dispenser has a primary compartment (200), a pumping compartment (225) and a spout (210) with a pressure operated flexible sealing member (226) therein. The pumping compartment has a rigid base (198) and a flexible dome (218) which is actuated to decrease the volume of the pumping compartment (225). The sealing member (226) has a tapered tip (228) connected to flexible fingers (230) by a thin rod (232) passing through the spout (210). The flexible dome (218) has a plunger (224) depending downwardly thereform which closes an opening (208) in the base (198) to prevent backflow of material from the pumping compartment (225) to the primary compartment (200) when the dome (218) opens against the bias of the flexible fingers (230) when the dome (218) is actuated and closes when deactuated.

Abstract translation: 真空泵分配器具有带有自密封喷口的泵室和主隔室。 与常规真空泵相关的问题是每次使用分配器之后密封口不会被密封，从而污染尚未分配的材料。 本发明提供了一种改进的密封喷口，其在泵室被致动并打开时打开以分配材料，并在关闭时密封喷嘴。 分配器具有主隔室（200），泵室（225）和在其中具有压力操作的柔性密封构件（226）的出口（210）。 泵室具有刚性基座（198）和柔性圆顶（218），其被致动以减小泵室（225）的体积。 密封构件（226）具有通过穿过喷口（210）的细杆（232）连接到柔性指状物（230）的锥形尖端（228）。 柔性圆顶（218）具有一个向下悬垂的柱塞（224），该柱塞封闭基座（198）中的开口（208），以防止材料从泵室（225）向初级隔室（200）的回流 （218）当穹顶（218）被致动时抵抗柔性指状物（230）的偏压打开，并且在停用时关闭。