Dispensing device with hard spot check valve

• Main Authors: HENNEMANN PASCAL, GENNELL. DURING
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; NOZZLES; PERFORMING OPERATIONS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

The invention relates to a dispensing device (10) comprising: a connecting member (20) mounted on an opening (16) of a container (12); a piston (28); a cylinder (30) in which the piston (28) is arranged so as to define a metering chamber (32) between the piston (28) and the cylinder (30), the piston (28) comprising a dosing inlet (34) and a dispensing opening (36), the cylinder (30) being slidable along the piston (28); an inlet check valve (38) arranged to open the dosing inlet (34) when subjected to negative pressure; an outlet check valve (40) arranged to open the dispensing opening (36) when subjected to positive pressure. The outlet check valve (40) includes a diaphragm (64) having a sealing lip (66) adapted to slide against an inner axial surface (56) of the cylinder (30). 本发明涉及一种分配装置(10)，该分配装置包括：连接构件(20)，该连接构件安装在容器(12)的开口(16)上；活塞(28)；缸体(30)，活塞(28)布置在该缸体中，以便在活塞(28)和缸体(30)之间限定计量室(32)，活塞(28)包括配量入口(34)和分配开口(36)，缸体(30)能够沿活塞(28)滑动；入口止回阀(38)，该入口止回阀设置成当受到负压时打开配量入口(34)；出口止回阀(40)，该出口止回阀设置成当受到正压时打开分配开口(36)。该出口止回阀