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The new technology of surface hardening,
adopted for the plungers, can prevent
the Cr-plating layer from peeling off.
The
life of the braided packing with PSA
yarn can endure over one time longer
than that of the packing with traditional
carbon fiber yarn..
The
integrated suction and discharge valve
assemblies are adopted to facilitate
assembling and disassembling.
Structure
Features
This pump
is a horizontal single acting triplex
reciprocating pump. With symmetrical
struture, the installation of the outlet
pipe can be chosed at either side of
the liquid end according to the requirements
of customers. The pump, gear reducer,
motor, lubricating system are mounted
on the common baseplate.
Power
End
The
frame is symmetrical, rigid, box construction
and made of high strength cast iron.
The main bearing seats are parted at
a 30ˇăslant for easy to install ad 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
of lubrication oil passage (oil from
crosshead to crankshaft), there is no
oil 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 fixed 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, the load capacity of 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 single
cylinder block, which is made of forged
carbon steel. 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. The integrated
suction and discharge valve assembly
and monoblock cylinder body are designed
to raise the efficiency of pump and
lengthen its service life.
Lubrication
A
seperated lubrication system with two
filters (coares & fine) and an oil
pressure alarm is used. When cleaning
the filters, it is unnecessry 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 the sump, the other for showing the
temperature of lubricating oil after
cooled.
- Power
transmission
The
pump is driven by the TEFC induction
motor. The explosion-proof motor and
specialized induction motor for inventer
can also be supplied according to the
requirements of the customers. Freguency
inverter or other speed adjusting device
can be adopted so as to change the capasity
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 baseplate.
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