1. Product classification and specifications
Lotion pumps can be divided into Ф 18, Ф 20, Ф 22, Ф 24, Ф 28, Ф 33, Ф 38 and other specifications according to their diameters. According to the type of lock, it can be divided into guide block lock, threaded lock, clip lock, and no lock. In structure, there are different types of spring external pump, plastic spring pump, waterproof lotion pump and high viscosity liquid pump. The pumping methods are divided into vacuum bottle and suction tube, and the pumping volume comes in various specifications such as 0.15/0.2cc, 0.5/0.7cc, 1.0/2.0cc, etc.
2. Overview of Working Principle
By manually pressing down on the pump head, the volume inside the spring chamber decreases, the pressure increases, and the liquid enters the nozzle chamber through the valve core hole and is ejected from the nozzle. After releasing the pressure, the volume of the spring chamber increases to form negative pressure, and the sphere opens under the negative pressure, allowing the liquid in the bottle to enter the spring chamber. When the pump head is pressed down again, the liquid stored in the valve body will be pushed out.
3. Performance indicators
The main performance indicators of lotion pump include air pressure times, pump output, downforce, opening torque, rebound speed and waterproof performance.
4. Comparison of spring types
The external spring design avoids direct contact with the contents, effectively preventing contamination of the contents caused by spring rusting.