The peristaltic pump is based on the principle of peristalsis according
which the prevalence to the fluid treated is given by acrushing
sliding along the pipe. With this method the more or less dense
liquids are transported in a delicate and soft way. The pump is
suitable for the pouring of liquids (wine, fruit juices, milk, and oil)
and semisolid products (crushed and intact grapes, grapes after the
removal of stalks, tomatoes). The pump consists of a rotor bearing
three rollers that while rotating compress the rubber pipe causing
the advancement of the liquid. The alternation between compression
and relaxation of the pipe generates vacuum sucking the product
and consequently a constant delivery. The advantages of this type
of pump are a delicate pumping preventing oxidizations, shakings,
emulsions, crushing of berries and seeds, and contacts between the
product and mechanical parts.
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