China wholesale Triger Sprayer 28/410 Manufacturers – 18/400 20/400 20/410 plastic lotion hand pump black lotion pump for bottle lid – Yongxiang

For our company:we are specialized in producing sprayer and pump for 17 years. Each product is auto assembled and non-spill detected by auto machines in dust-free workshop, and double tested in airless enviroment.  

We implement ISO 9001 quality system strictly in order to provide a solid foundation and protection for the excellent quality.

01. the working principle of the lotion pump

When the pressing head is pressed for the first time, the pressing head drives the piston head to compress the spring together through the connected connecting rod; in the process of compressing the spring, the outer wall of the piston rubs against the inner cavity wall of the cylinder, which causes the piston to open the discharge hole of the piston head; the piston goes down When sliding, the air in the cylinder is discharged through the discharge hole of the piston head that has been opened.

Press several times to exhaust all the air in the cylinder.

Press the pressing head by hand to discharge the air in the cylinder through the connecting rod, the piston head, and the piston, and compress the spring together to discharge the air in the cylinder, then release the pressing head, the spring moves back (up) due to the loss of pressure, and the piston also rubs the inner wall of the cylinder at this time. Move down to close the discharge hole of the piston head. At this time, the liquid storage chamber in the cylinder forms a vacuum suction state, the ball valve is sucked up, and the liquid in the bottle is sucked into the cylinder liquid storage chamber through the straw.

Press the pressing head several times, and store the liquid into the cylinder through several suctions until the liquid is full.