Cosmetics packaging structure of spray pump

Spray pump, also known as spray, spray pump is a major accessory products, cosmetics packaging container is one of the content distributor, spray pump is a kind of using atmospheric balance principle, through the press material liquid in the bottle, high-speed flow of liquid near the mouth of the gas flow will also drive the nozzle, the nozzle mouth near the speed of the gas, the pressure decreases, the formation of local negative pressure zone. Thus, in the surrounding air mixed into liquid, gas-liquid mixture formation, causes the liquid atomization effect. Spray pump structure mainly include the following:

1, spray pump main accessories

conventional spray pump is mainly composed by/according to the diffusion of the head, mouth, mouth center catheter, lock cover, seal, piston, piston, spring, pump body, straw and other accessories, which is suitable for opening the pistons, piston with piston connection, achieve when compressed rod upward movement, pump body foreign open, upward movement, the effect of the studio closed. According to the requirements of the different pump structure design, and related accessories will be different, but the principle is consistent with the ultimate goal.

2, spray pump water principle

( 1) Exhaust process: assumes that the initial state, the base has no liquid in the studio. Press the pressure head, compression rod drive the pistons, piston driven piston moves down, the spring is compressed, the studio compressed volume, pressure increase, water stop valve seal pumping pipe port. Due to the piston and the piston is not completely closed, the gas pushed out the clearance between the piston seat and piston, make its separation, gas escape.

（ 2) Water absorption process: after exhaust, loosen the pressure head, the compression of the spring is released, forces the pistons to move up, clearance between the piston and the piston seat closure, and push the piston and compressed rod move up together. Studio in volume increases, pressure decreases, and the approximate vacuum, makes the water stop valve to open the container liquid level at the top of the air pressure to press the liquid into the pump body, completing the process of water absorption.

（ 3) Process: water principle with exhaust process. The difference is that at this time, is filled with fluid in the pump body. When press the pressure head, on the one hand, the upper check valve seal water pumping pipe, and prevent the liquid from pumping pipe back to the container; On the other hand, due to the fluid ( Incompressible fluid) By extrusion, the liquid will be made of the piston and the piston clearance, into the compression tube. And out of the nozzle.

3, spray pump atomization principle

because of the jet is very small, if press the smooth ( In compression pipe has a certain velocity) , when comes out of the hole liquid, liquid velocity is large, that is to say, at this time of air relative to the liquid has a big flow rate, equivalent to the problem of high-speed flow water droplets. So after atomization principle analysis and the ball pressure type nozzles are exactly the same, the air will be big drop impact into small water droplets, step by step refined water droplets. Will drive the nozzle at the same time, the high-speed flow of liquid near the mouth of the gas flow, the nozzle mouth near the speed of the gas, the pressure decreases, the formation of local negative pressure zone. Thus, in the surrounding air mixed into liquid, gas-liquid mixture formation, causes the liquid atomization effect.