Basic Knowledge of Lotion Pump

Lotion pump, also called pressure lotion pump, is a liquid dispenser that uses the principle of atmospheric balance to pump out the material and liquid in the bottle by pressing and replenish the outside atmosphere into the bottle.

One, understand the lotion pump

Lotion pump, also called pressure lotion pump, is a liquid dispenser that uses the principle of atmospheric balance to pump out the material and liquid in the bottle by pressing and replenish the outside atmosphere into the bottle. The main performance indicators of the lotion pump: air pressure times, pump output, down pressure, head opening torque, rebound speed, water intake indicators, etc.

Dispensers are divided into two types: tie-type and screw-type. In terms of function, they are divided into spray, foundation cream, lotion pump, and aerosol valve.

The size of the pump head is determined by the caliber of the matching bottle. The spray size is small. It is generally used for perfume, gel water and other product packaging. The length of the nozzle with the same caliber can be determined according to the height of the bottle.

Lotion pumps are generally used in creams and washing products.

Special dispensers such as foam pump heads and hand-button sprinklers. The foam pump head is a non-gas-filled hand-pressure pump head. It does not need to be filled to produce foam. It can produce quantitative high-quality foam with light pressure. Usually comes with a dedicated bottle. Hand-button sprinklers are usually used in products such as detergents.

The composition of the dispenser is more complicated, generally including: dust cover, snap head, snap rod, gasket, piston, spring, valve, bottle cap, pump body, straw, valve ball (with steel ball, glass ball). Bottle caps and dust caps can be colored, electroplated, and can be covered with anodized aluminum rings.

Airless bottles are usually cylindrical and have a small overall capacity. They rely on the principle of atmospheric pressure to avoid pollution caused by cosmetics during use. Airless bottles include electrochemical aluminum, plastic plating and colored plastics. The price is more expensive than other ordinary containers. The order quantity is not high. Distributor customers seldom open molds by themselves, they need more molds, and the cost is higher.

2. The working principle of the pump head: 　

Manually press the pressure handle downwards, the volume in the spring cavity decreases, and the pressure rises. The liquid enters the nozzle cavity through the hole of the valve core, and then sprays the liquid out through the nozzle. At this time, loosen the pressure handle and the pressure in the spring cavity The volume increases and negative pressure is formed. The sphere opens under the action of negative pressure, and the liquid in the bottle enters the spring cavity. At this time, there is a certain amount of liquid in the valve body. When the handle is pressed again, the liquid stored in the valve body will be Punch upwards, spray out through the nozzle;

From the above working principle, the key to a good pump head is to pay special attention to the following places: 1. The glass ball or steel ball under the spring. The seal here is very important. It is related to the upward rush of the liquid in the spring cavity. If it leaks here, when the pressure handle is pressed, part of the liquid will leak into the bottle and affect the effect of the liquid spray; 2. It is the sealing ring at the upper end of the valve body. If there is leakage here, when the pressure handle is released When the liquid is pumped upward, the bottom of the force is reduced, resulting in a small amount of liquid stored in the valve body, which will also affect the spray effect; 3. The fit between the pressure handle and the valve core. If the fit here is loose and leaks, When the liquid rushes up to the nozzle, there will be a certain resistance, and the liquid will flow back. If it leaks here, it will also affect the spray effect; 4. The design of the nozzle, the design of the nozzle is directly related to the spray effect, see details The nozzle design issues will be explained in detail on the next page;

Therefore, the function of the general pump head is to detect these four positions, and other appearance and coordination problems are tested according to routine.