NYP series internal
gear pump is a kind of new positive displacement
pump, and is designed according to the different
fields' requirements of petroleum ,chemical
industry ,paint ,medicine ,foodstuff and so
on. It widely applies to a variety of mediums
with different property and viscosity because
of special structure and selected different
Proper medium temperature:-10℃～200℃(about NYP0.78&
Proper medium viscosity:1.0cSt～300,000cSt(about
NYP0.78 & NYP2.3,1.0cSt～10000cSt)。
of structure(As gigure)
driving gear （outside rotor）with internal tooth
drives the internal rotor and turns in same
direction in the full closed pump body. The
inlet from the outlet. When it turns, negative
pressure formed at the suction port, the liquid
inhaled and being take to the outlet by rotor,
then the liquid is expelled from the discharge
port as the gears mesh. The transpor-tation
of liquid finished.
As figure I The pumps are mainly composed of
internal rotor, outside rotor, shaft, pump casing,
front cover, seal, bearing etc.
The pump 'seal adopts packing seal or mechanical
seal. When the delivered medium is high temperatur
,high visc or strong corrosion, packing seal
should be adopted.
When the delivered medium is easy crystallinic
,we can design the heat preservation jacket
in pump casing and front cover in order to melt
the medium with steam when working. The pump
can be also fitted with the safety valve.
The pump set is composed of the pump, motor
The driving way is belt wheel driving or coupling
1)Steady delivery without pulsation ,little
vibration and noise.
2)Outstanding self-priming abitity.
3)The pump can deliver the varied corrosion
mediums if the proper material of parts selected.
In addition ,the working temperature can reach
4)The same rotary direction of internal rotor
and outside rotor results in little wear and
long operation life .
5)The pump's flow capacity can be changed through
adjusting the speed.
6)It's specilly suited to deliver high visc