Operating Rules for Spray Pump Repairman

The spray pump, also known as the push type emulsion pump, is a liquid distributor that uses the principle of atmospheric balance to draw out the raw material liquid in the bottle and replenish the atmosphere inside and outside the bottle. The main performance indicators of the spray pump include the number of air pressures, pump displacement, low pressure, nozzle opening torque, rebound speed, water inlet index, etc. Let us learn the basics of spray pumps together!

Spray pump dispensers are divided into sleeve type and screw type, functionally divided into sprayer, foundation, emulsion pump, aerosol valve and vacuum bottle.

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




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

Special spray pump dispensers, such as foam pump heads and manual pump heads. The foam spray pump is a non-pneumatic hand pump head, which can produce quantitative and high-quality foam with light pressure and no inflation. Usually there are special bottles. Snap ring nozzles are commonly used in detergents and other products.

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

Airless bottles are usually cylindrical, with specifications ranging from 15 ml to 50 ml, 100 ml per bottle, and the overall capacity is small. Relying on the principle of atmospheric pressure, the pollution of cosmetics during use can be avoided. The airless bottle is made of electrolytic aluminum, plastic plating and colored plastic. The price is higher than other ordinary containers, and the amount of ordinary orders is not high. Customers seldom make molds by themselves and require a lot of molds, which are very expensive.

The working principle of the spray pump:
When the handle is pressed by hand, the volume of the spring chamber decreases and the pressure increases. The liquid enters the nozzle chamber through the hole of the valve body, and the liquid is ejected through the nozzle. At this time, after the handle is released, the volume of the spring chamber increases, forming a negative pressure, the ball opens under the negative pressure, and the liquid in the bottle enters the spring chamber. At this time, there is already some liquid in the valve body. When the handle is pressed again, the liquid stored in the valve body is flushed upwards, and the nozzle

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

1. The glass ball or steel ball under the spring, where the sealing is very important, is related to the upward force of the liquid in the spring cavity. If it leaks from here, a 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 upward pulling force when the liquid leaves the handle will be reduced, and the amount of liquid stored in the valve body will be small, which will also affect the spray effect.

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

4. The design of the spray pump nozzle and the design of the nozzle are directly related to the spray effect. Please specify the nozzle design on the next page; therefore, the general spray pump function will also detect these four positions, and other appearance and coordination problems will also be tested as usual;