| Structure Features
Power End
The
frame is of symmetrical, rigid and box
construction, and made of high strength
cast iron. The main bearing seats are
parted at a 30¡ãslant for easy to
install and maintain. The lower part
of the frame is designed as an oil sump
of the power end, with magnetic separater
installed in it.
Crankshaft is made
of high strength alloy steel forging.
By increasing the overlap coefficient
of crankshaft pin and using a new arrangement
lubrication oil passage (oil from crosshead
to crankshaft), there is no holes in
the crankshaft; the strength of crankshaft
is raised.
The connecting rods
are made of high strength nodular cast
iron. Steel backed babbit metal bearings
are fitted, at the big end of the connecting
rod and the bushing at the small end
which is designed to be stepped structure,
is made of special alloy metal, so that
the load capacity of the connecting
rods is raised.
The crosshead is made
of the same metal as connecting rod
bushing.
The pump cylinder,
distance piece and frame are fitted
with dowel pin to ensure accurate alignment
on reassembly.
Liquid
End
The pump cylinder is
designed as a monoblock, which is made
of forged carbon steel. Due to the symmetrical
structure discharge flanges are provided
at both sides of the cylinder for easy
of piping.
The alignment of the stuffing box is
maintained by the distance piece.
Lubrication
A seperated lubrication
system with two filters (coares &
fine) and an oil pressure alarm is used.
When cleaning the filters, it is unnecessary
to drain the lubricating oil from the
oil sump. There are two oil temperature
gauges in the lubricating system, one
for showing the temperature of the lubricating
oil in after cooled.
- Power
transmission
The pump is driven
by the TEFC induction motor. The explosion-proof
motor and specialized induction motor
can also be chosed according to customers¡¯
requirements. If customers require for
adjusting speed frequency inverters
or other speed adjusting equipment can
be adopted so as to change the capacity
of the pump.
The pump is connected to the motor
thru metallic flexible couplings and
hard faced gear reducer, and they are
all mounted on the common base plate.
- Instructions
for orders
When a cuprammonia acetate pump of
certain capacity and pressure is selected,
please contact Da Long Machinery Works
for the latest general drawing and foundation
drawing. Any reciprocating pumps, with
capacity and discharge pressure matchable,
can be supplied according to the customers¡¯
specific requirements.
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