Some classifications and common questions about lotion pumps

The emulsion pump, also known as the squeeze-type emulsion pump, is a liquid distributor that uses the principle of atmospheric balance to pump out the raw material liquid in the bottle and replenish the external atmosphere to the bottle.

The main performance indicators of the emulsion pump: air pressure times, pump displacement, low pressure, nozzle opening torque, rebound speed, water intake index, etc.

A typical lotion pump consists of a head, a mouthguard, a cylinder head, a cylinder, a piston rod, a piston, a piston head, a spring, a lower individual valve, a gasket, and a hose. However, not all lotion pumps need to contain These parts, according to specific performance requirements, some parts may be combined or replaced, and then derived various structures of the lotion pump, but the basic principle is roughly the same.



Classification of lotion pumps

1) It can be classified according to the product field of the lotion pump application.

Shampoo pump, shower gel pump, moisturizing pump, extract pump, anti-floating oil pump, BB cream pump, foundation pump, facial cleanser pump, hand washing pump, etc.

2) According to the lock method, it can be divided into the following types.

Guide block, screw lock, clip lock, no lock.

3) According to the characteristics of the lotion pump, it is divided into the following types.

External spring pump, plastic spring, anti-soaking lotion pump, high viscosity material pump, etc.

2. Analysis of common problems of emulsion pump:

1) The air pressure of the lotion pump is high or no water is produced.

Cause Analysis:

a. The length of the hose is too long or the depth of the bottle is too shallow, the inlet of the hose is blocked, the air pressure of the lotion pump is too high, and the liquid cannot be discharged; b. The upper one-way valve of the lotion pump or (the lower one-way valve is damaged or defective); c. The large wheel of the piston is damaged or missing.

2) It is difficult to rebound and reset after the lotion pump is pressed:

Reason analysis: a. The viscosity of the material liquid is too large, and the reset resistance is greater than the spring force. It is recommended to choose a high-viscosity material emulsion pump for the material liquid with high viscosity; b. The one-way valve under the emulsion pump is blocked or the designed channel section is small, the straw is thin, Insufficient gloss of cylinder bore or piston outer ring.

3) Leaking from between the lotion pump and the bottle mouth:

Reason analysis: a. The cap torque applied during filling is insufficient; b. Due to the small height of the bottle mouth, after the mouthguard is tightened, the upper end surface of the bottle mouth cannot contact the sealing gasket of the lotion pump.

4) After pumping out the lotion, the bottle shrunk:

Analysis of the reasons: a. The inner diameter of the bottle mouth is too small, close to the outer diameter of the cylinder, and it is easy to block the balanced air holes under the action of the material liquid; b. The mold wear causes the air holes to be blocked when the cylinder is out of balance; c. The neck gas channel design Small, too late to add gas to the bottle.

4. Surface decoration of lotion pump:

The surface decoration treatment of emulsion pump usually includes electroplating, aluminum electroforming cover, hot foil, silver burning, printing, etc.