The lotion pump is also called the push-type lotion pump. It is a liquid dispenser that uses the principle of atmospheric balance to pump out the liquid in the bottle by pressing and filling the bottle with the outside atmosphere. The main performance indicators of the lotion pump: are air pressure times, pump output, downforce, pressure head opening torque, rebound speed, water intake indicators, etc.

　　First, understand the lotion pump

　　Also known as a push-type lotion pump, it is a liquid dispenser that uses the principle of atmospheric balance to pump out the liquid in the bottle by pressing and filling the bottle with the outside atmosphere. The main performance indicators of the lotion pump: are air pressure times, pump output, downforce, pressure head opening torque, rebound speed, water intake indicators, etc.

　　Dispensers are divided into tie type and screw type. In terms of function, they are divided into spray, foundation cream, lotion pump, aerosol valve, vacuum bottle

　　The size of the pump head is determined by the caliber of the matching bottle body. The size of the spray is 12.5mm-24mm, and the water output is 0.1ml/time-0.2ml/time. It is generally used for packaging perfume, gel water, and other products. The length can be determined according to the height of the bottle body.

　　The lotion pump head has a large specification range of 16ml to 38ml, and the water output is 0.28ml/time to 3.1ml/time. It is generally used for cream and washing products.

　　For special dispensers such as foam pump heads and hand button plastic sprayer heads, the foam pump head is a non-inflatable hand pressure pump head, which does not need to be filled with air to generate foam, and only needs to be lightly pressed to produce quantitative high-quality foam. Usually with a dedicated bottle. The snap-on plastic sprayer head is usually used on products such as cleaners.

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

　　Vacuum bottles are usually cylindrical, with a specification of 15ml-50ml, and some are 100ml. The overall capacity is small, relying on the principle of atmospheric pressure, which can avoid pollution caused by cosmetics during use. Vacuum bottles include anodized aluminum, plastic plating, and colored plastics. The price is more expensive than other common containers, and the general order quantity requirement is not high. Distributor customers seldom open molds by themselves, and the cost of paying for more molds is higher.

　　Second, the working principle of the pump head:

　　Manually press down the pressure handle, and the volume in the spring chamber decreases, the pressure rises, the liquid enters the nozzle chamber through the hole of the valve core, and then sprays out the liquid through the nozzle, at this time release the pressure handle, the pressure in the spring chamber The volume increases, forming a negative pressure, the ball opens under the negative pressure, the liquid in the bottle enters the spring chamber, 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 released Rush upwards and 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 points: 1. The glass ball or steel ball under the spring, the sealing here is very important, which is related to the upward rush of the liquid in the spring cavity Strength, if there is a leak here, when the pressure handle is pressed, part of the liquid will leak into the bottle and affect the effect of the liquid spraying; 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 pumping force of the liquid is reduced, the amount of liquid stored in the valve body is very small, 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 there is leakage, 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 effect of the spray. For details, see The next page explains the nozzle design in detail;

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