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What is the difference between a foam pump and a water pump

What is the difference between a foam pump and a water pump
The purpose is different, the foam pump is a special pump, and the water pump is a general-purpose pump
The foam pump can be well adapted to the foam that appears in the flotation and other mineral processing industries through the special structure design, so it is called the foam pump, which is actually a kind of centrifugal slurry pump. It is suitable for various flotation processes and is an ideal pump for conveying foam slurry. The conveying capacity far exceeds other forms of products, and does not require any shaft seal and shaft seal water.
A water pump is a machine that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspoemulsions and liquid metals.
It can also transport liquids, gas mixtures and liquids containing suspended solids. The technical parameters of pump performance include flow, suction, head, shaft power, water power, efficiency, etc.; according to different working principles, it can be divided into volumetric pumps, vane pumps and other types. Positive displacement pumps use changes in the volume of their working chambers to transfer energy; vane pumps use the interaction between rotating blades and water to transfer energy. There are centrifugal pumps, axial flow pumps and mixed flow pumps.

The principle of pressing the shampoo out of the bottle: using atmospheric pressure.
When using, first press to discharge the air in the reservoir (that is, the plastic tube that can absorb the shampoo). When the air is exhausted, press the pump head again. After letting go, the spring in the pump head will have to Restore the original state, then a vacuum will be formed in the liquid storage chamber, and negative pressure will be generated. At this time, the pressure in the container is consistent with the atmospheric pressure. Then, the pressure in the liquid storage chamber is low and the pressure in the container is high. At this time, Due to the pressure difference, the atmosphere will press the liquid around the mouth of the liquid reservoir into the liquid reservoir, and the shampoo will be squeezed out.