Vertical immersion pump
VTP centrifugal pumps in block design (BBF) correspond
to the system of two-pipe pumps. Basically these immersion
pumps are single-level immersion pumps with vertical
axis the main components of which are combined according
to the proven module system.
The drive motor is located in the dry section above
the fastening plate. The pump head is immersed in the
VTP-BBF immersion pumps are designed without bearings
and are suited to convey low-viscosity, aggressive acidic,
alkaline and solutions from depressurized tanks.
The efficient immersion depth can be increased by max.
300 mm by using a suction pipe. Furthermore the pump
head can be equipped with a coarse at the suction connector.
VTP-BBF immersion pumps are characterized by their simple
and sturdy design. The immersion pipe is fitted with
a rigid supporting plate and thick sides. The sealing
between spiral casing and immersion pipe is realized
by a labyrinth seal.
The hydraulic parts such as spiral casing, impeller,
etc. are standard components from the standard pump
program. The drive motor (basic version according to
IEC) is equipped with an extended shaft. Therefore it
is not necessary to provide the shaft with a bearing
in the pump head area so that dry running is prevented
and operation is almost maintenance-free.
There is a variety of possibilities to use vertical
immersion pipes. They are generally suitable for applications
which do not allow to convey the media from depressurized
tanks, basins and reservoirs with dry pumps due to the
local constructional, physical or safety requirements.
The maximum operating temperature depends on the concentration
of the medium, a temperature of 80° C must, however,
not be exceeded for the material PP.
All parts in contact with the medium are made of PP,
elastomers are of EPDM or FPM.
The drive shaft of high-quality steel is coated with
a PP shaft protection pipe in the area of the medium.
The impeller form is radial. The individual sizes are
supplied with the following impellers: sizes 15-85,
20-120 and 25-135 in open form, all other sizes in closed
form (open impellers on request).