Basic knowledge of spray pump

The spray pump is also called a push-type emulsion pump. It uses the principle of atmospheric balance to pump out the raw material liquid in the bottle by pushing, and supplement the external atmosphere to the liquid distributor in the bottle. The main performance indicators of the spray pump: Air pressure times, pump displacement, low pressure, nozzle opening torque, rebound speed, water inlet index, etc. Let's get to know the basic knowledge of spray pump together!

The dispenser is divided into sleeve type and spiral type, functionally divided into spray, foundation, lotion pump, aerosol valve, vacuum bottle

The size of the spray pump is determined by the caliber that matches the bottle body. The spray specification is 12.5mm-24mm, and the water output is 0.1ml/time-0.2ml/time. It is generally used for packaging perfumes, gel water and other products. The caliber is the same, and the length of the transfer can be determined by the height of the bottle.

The spray pump specifications range from 16ml to 38ml, and the water output is 0.28ml/time-3.1ml/time. It is generally used for cream and washing products.

Special dispensers, such as foam pump heads and manual pump heads. The foam pump head is a non-inflatable manual pump head. It does not need to be inflated to generate foam, and it can produce quantitative and high-quality foam by lightly pressing it. Usually there are special bottles. Buckle-ring sprinklers are usually used for detergents and other products.

The structure of the distributor is very complicated, generally including dust cover, percussion head, percussion rod, gasket, piston, spring, valve, cover, pump body, suction pipe, valve ball (with steel ball, glass ball). The cover and dustproof cover can be made of colored, can be electroplated, can be inlaid with anodized aluminum.

Airless bottles are usually cylindrical, with specifications ranging from 15ml to 50ml, each with 100ml, and the overall volume is small. Relying on the principle of atmospheric pressure, it can avoid pollution during cosmetic use. Airless bottles include electrolytic aluminum, plastic plating and non-ferrous plastics. The price is higher than other ordinary containers, and the amount of ordinary orders is not high. Customers seldom open molds by themselves, and require a lot of molds, which are very expensive.





The working principle of the spray pump head:
Press the handle by hand, the volume of the spring chamber decreases, the pressure rises, the liquid enters the nozzle chamber through the hole of the valve body, and the liquid is sprayed out through the nozzle. At this time, after the handle is released, the volume of the spring chamber increases, forming a negative pressure. The sphere opens under the action of the negative pressure, and the liquid in the bottle enters the spring chamber. At this time, there is already a certain amount of liquid in the valve body. Press the handle again , The liquid stored in the valve body is flushed upward

From the above working principle, the key to a good pump head is to pay special attention to the following aspects.

1. The glass ball or steel ball under the spring, the seal here is very important, and it is related to the upward force of the liquid in the spring chamber. If it leaks from here, part of the liquid will leak into the bottle when the handle is pressed, which will affect the spraying effect of the liquid;

2. The sealing ring at the upper end of the valve body. If there is a leak here, the force of pulling up the liquid will be reduced when the handle is removed, and the amount of liquid stored in the valve body will be small, which will also affect the spray effect.

3. The engagement between the joystick and the valve body. If the engagement here is loose and there is leakage, there will be a certain resistance when the liquid rises to the nozzle, causing the liquid to flow back. If it leaks from here, it will also affect the spray effect.

4. The design of the nozzle and the design of the nozzle are directly related to the spray effect. For details, please explain the design of the nozzle in detail on the next page; therefore, the general pump head function will also detect these four positions, and other appearance and cooperation issues will be tested as usual