The lotion pump's piston system is one of the core parts of the device, responsible for converting the user's pressing action into accurate distribution of liquid.

Piston structure:

The piston is the moving element within the Lotion Pump, usually a cylindrical part with the bottom in contact with the liquid. Pistons are typically made from corrosion- and chemical-resistant materials to ensure compatibility with a wide range of cosmetic and personal care products. Its surface is usually smooth to reduce friction losses.

Spring device:

The spring in the piston system is an important auxiliary component. The spring is usually located at the base of or around the piston and is connected to the piston. When the user presses the Lotion Pump's button, the spring is compressed. When the button is released, the spring quickly deploys, providing enough force to push the piston downward.

The movement mechanism of the piston:

When in use, the user presses the button of the Lotion Pump to cause the piston system to start moving. The release of the spring causes the piston to move rapidly downward, pushing liquid through the outlet of the pump head. The design and movement mechanism of the piston need to ensure that the liquid is distributed stably and evenly throughout the movement.

Quantitative distribution:

The Lotion Pump's piston system is typically designed to meter dispensing to ensure a consistent amount of fluid is delivered with every pump. This requires the piston to have a precise stroke and stable speed during movement to ensure that users receive accurate product dispensing every time they are used.

Sealing and leak-proof design:

To prevent fluid leakage and external air contamination, an effective sealing system is usually included in the piston system. This may involve a sealing ring around or at the base of the piston, ensuring that the liquid remains within the container when not in use, without leakage or external contamination.

material selection:

The materials used in piston systems need to have good chemical resistance and stability to accommodate a wide range of cosmetic and personal care products. The appropriateness of material selection directly affects the performance and life of Lotion Pump.