公开(公告)号：US20240253072A1

公开(公告)日：2024-08-01

申请号：US18564564

申请日：2021-12-27

申请人： Majesty Packaging System Co., Ltd

发明人： Peihui Liang ,  Maoyong Zhu ,  Yonglei Zhang ,  Jinkao Liang

IPC分类号： B05B11/10

CPC分类号： B05B11/1001 ,  B05B11/1047 ,  B05B11/1067 ,  B05B11/1074 ,  B05B11/1076

摘要： Disclosed in the invention is an all-plastic pressing pump comprising: an actuator, an insert, a housing, a container cap, a piston guide, a pump ball, a spring, and a protective cover, made of plastic. The lower end of the piston guide is provided with a slidable sealing part that is inserted into the housing and slidably and sealing connected to the inner wall of the housing. The container cap has a central hole for the piston guide to pass through. A conical frustum sealing part is provided on the piston guide above the slidable sealing part, and the conical frustum sealing part forms a sealed connection with the side wall of the central hole when it bounces up. An air replenishment channel is disposed between the housing and the container cap. A liquid outlet channel and a switch structure are disposed between the actuator and the piston guide, and the switch structure opens the liquid outlet channel when the actuator is pressed down and blocks the liquid outlet channel when the actuator bounces up. A guide sleeve is provided on the top of the container cap and is upwardly sleeved on the outer side of the actuator. An anti-off protrusion is provided at the upper end of the guide sleeve. The actuator is provided with an anti-off hook that is capable of being hooked on the anti-off protrusion. The spring is disposed inside the guide sleeve and is pressed between the top of the actuator and the top of the container cap. The spring is a plastic spring tube with open upper and lower ends and a sealed side, and the structure thereof is simple.