The working principle of a lotion pump is based on a simple mechanical mechanism that allows for the dispensing of liquid products, such as lotions or creams. When the pump head is pressed down, it creates a vacuum that draws the liquid from the container through a dip tube. The liquid is then pushed out through the nozzle, allowing for controlled dispensing. This mechanism ensures that the product is delivered in a measured amount, making it convenient for users.

With the gradual improvement of people's living conditions, the use of many household items has become increasingly convenient, including the application of lotion pumps. Lotion pumps, also known as push-type emulsifying pumps, utilize the principle of atmospheric pressure balance to expel the emulsified liquid from the bottle by pressing, and they can also serve as a tool for adding external atmospheric liquid into the bottle. Next, I will discuss the working principle of the emulsifying pump and its important functions and parameters.

When purchasing products containing lotion pumps, it is important to know that during the pressing process, the head connected to it needs to be engaged, and the piston is driven by the action of the compression spring. During the compression of the spring, the outer wall of the lotion pump piston often opens fully due to friction with the inner wall, while the liquid appears at the discharge hole of the piston head. When the piston moves downward, the internal air will be expelled from the piston head.

We can completely expel the air in the inner chamber by pressing multiple times, then press the head with our hand, and use the action of the piston connecting rod and compression spring to expel the air in the inner chamber. At this point, when we release the pressure head of the lotion pump, the spring will lose its pressure effect and move down again. At this time, the piston moves downward through friction with the inner wall to close the discharge hole. The internal liquid storage gun will be in a hollow state, and the lotion pump can absorb liquid multiple times, storing it in the cylinder until there is no gap. At this point, simply pressing the head of the lotion pump again will allow the liquid to spray directly from the outlet, which is the working principle of the emulsifying pump.

It is well known that the pump output of the lotion pump is often a very important parameter, as it relates to the errors and sealing of various components of the emulsifying pump. Generally speaking, the number of air compressions and the volume of compressed liquid are important parameters for user experience, and they are also a very important standard for manufacturers when testing lotion pumps during production. I hope this article provides everyone with a basic understanding of the working principle of the emulsifying pump.