Machines for the food processing industry
Düsseldorf . Deutschland
is the meaning of "Peeling without water and
mechanical peeling machines)
is not very long ago that the mechanical peeling of tubers
and root vegetables was done with the addition of much water. This
water washed away the skins, cleaned the peeling tools and cleared the peeled
fruit of all particles which
had come off during the peeling process and were still
sticking to them.
if the water was recirculated (which was contestable by
hygienic reasons), large quantities of water were heavily
fact the waste peel was regularly washed out by the water
added during the peeling process!
Of course, it was possible to remove much of the remaining
solid matter, up to a certain size, from the waste water, e.
g. by means of separators.
far as we know the market it was DORNOW, years ago and as
the first company worldwide, who put the first mechanical
peeling machines on the market that could be operated
without water: continuously working carborundum roller
peeling machines, carborundum batch peelers (carborundum
peeling = abrasion peeling), blade batch peelers as well as
a series of automatically working blade peeling lines.
we speak in terms of "peeling without water and waste
water", it means that peeling on the mentioned
machinery can really be done without water! The skins are
collected - without being washed out - and fed, for instance,
into a pump or a container. The peeling waste consists
totally of particles from the tubers or root vegetables!
is, however, a small quantity of tiny fruit particles still
sticking to the peeled fruit, due to the fact that they are
peeled without water addition, which have an adverse effect
in most of the production procedures and must, therefore, be
with the waste peel already removed without the addition of
water (see above), the quantity of these hardly visible tiny
fruit particles (e. g. in the form of starch slime) accounts,
on estimate, for not more than 0.2 % of the weight of the
raw material, most probably less than that. As it is a
matter of very small quantities, there is no scientific
treatise available. Maybe there will never be any research
referring to that because of the irrelevance of the subject.
remains, however, as far as water consumption is concerned
in the peeling lines
designed by DORNOW is the water for cleaning and the
most of the production lines there are, anyway, containers
with water serving as intermediate storage facilities and/or
as dosing devices.
many cases DORNOW also uses such a container, which is
anyway indispensable for intermediate storage (buffer
storage) and as dosing device for the connected machines, as
a washing station for the "dry"-peeled fruit.
a dry-peeled tuber or root or similar fruit drop into the
water of the container, they will be cleared of the
particles sticking to them, i. e. they will be
the course of a longer production process the number of
particles in the container will increase. DORNOW offers a
variety of solutions for the removal of most of these waste
particles, whether they are floating or heavier than water.
the place of the container one can also think of using a
short washing drum in which atomised water is generated. As
a rule, very small quantities of water are sufficient to
remove the adherent particles. In many cases one can also
work with recirculated water. Here, too, DORNOW is able to
offer solutions to cope with most of the floating or sinking
is a simple and often practicable solution: on the last
meter of the three-meter long peeling rollers you can
generate atomised water to rinse the fruit before leaving
the peeling machine. The addition of such a small quantity
of water does not necessarily mean waste water! The water
can be added to the peeling waste that might serve e. g. for
far as the DORNOW batch peelers are concerned, i. e. both
blade peelers and carborundum peeling machines (peeling by
abrasion), you may - if you do not want to carry out the
cleaning of the dry-peeled potatoes or similar fruit in a
container or in a drum (see above) - add some water during
the last few seconds of the peeling process and controlled
by means of a timer, in order to get the potatoes etc.
cleaned. This does not necessarily produce waste water! The
small quantity of water can normally be added to the peeling
waste and removed together with it.
Some few types of peeling machines offered by us cannot work
without water/waste water.
paper contains non-committal notes. We do not lay claim to
completeness. Alterations reserved.
Dornow food technology GmbH,
D-40549 Düsseldorf - Germany, USt-Id.-Nr. DE119264470