|
Screw pump due to the small dimensions of the high, allow the pumping of the product without pulsation and keep the fluid unaltered without damage it. Accept the presence of solid parts and can be suitable to pump fluid with viscosity up to 1.000.000 cps.
|
|
|
 |
| |
PUMP COMPONENTS / FEATURES |
|
| |
|
 ROTOR
It is a screw shape with circular section and, rotating in to the stator, allows the pumping of the fluid. The pressure of the pump depends on the number of stages. Every stage gives a pressure of 6 bar. Nova Rotors has two types of rotors: standard and long step type that, considering the same diameter and eccentricity, doubles the capacity increasing the pump performance. |
|
|
|
|
 STATOR
It is the fixed part of vulcanized rubber, contained or less on the metal tube, shaped like a circular screw quarry where the rotor rotates. |
|
Standard
 |
|
Long step type
 |
|
Rotor materials :
steel C40 chromed
stainless steel 304
stainless steel 316
stainless steel 304 HCP
stainless steel 316 HCP
nitride steel
hardened steel
ceramic steel
Duplex |
types of rubber Stator :
NBR
NBR food grade
EPDM
EPDM food grade
VITON
HYPALON
H-NBR
NATURAL
TEFLON,
and other on request. |
|
|
|
|
 TRANSMISSION AND JOINT
Support the axial force and the transmitted torque between rotor connection and drive.
|
|
Materials:
steel C40
stainless steel 316
stainless steel 304
Duplex
Stainless steel 630
Hardened steel 420B
Types:
Pin joint
Cross joint
Omocinetic joint
Open pin joint
|
|
 PUMP BODY
It is the structure where the liquid is pumped from. Available with a lot of connection types
.
Materials:
Cast iron G25 UNI 5007
Stainless steel 304 / 316
Carbon steel
duplex
CIP on request
|
|
|
|
 MOTORIZATION
These are the devices that give the movement to the pump: motor, hand variator, gear reducer, inverter.
|
|
 COUPLING
Possible coupling types are: close coupled, bearing housing, stainless steel support.
| |
Close coupled |
 |
Bearing housing |
 |
Stainless steel lantern |
 |
|
|
|
|
|
 SEAL
:Is the connection between the fix part and the rotating part of the pump to prevent the exit of the medium.
The selection of the type is depending from the fluid to pump.
|
Packing seal
It is a standard seal with packed PTFE rings at low friction coefficient. Solution with a low installation cost. Useful to process medium with suspension solid and abrasive. Pressure: up to 6 bar.
|
| |
|
 |
Packing seal with flushing
It is a standard seal with packed PTFE rings and flushing rings. Flushing pressure must be from 0.5 to 1 bar higher than the body pressure and compatible with the medium. Suitable to process very abrasive fluid. Pressure: up to 6 bar.
|
| |
|
 |
Ring oil seal
Seal with lips in contact, ideal in case of worm gear reducer use. High compactness and easy of maintenance. Suitable for processing products with high viscosity. Pressures: max 2 bar
|
| |
|
 |
Mechanical seal
Made of a stationary part and a rotating part, used with elastomeric or metallic spring. faces in contact has a friction coefficient very low. Independent from rotation sense. They are used to process product with big viscosity and low quantity of solid. Pressure: up to 25 bar
|
| |
|
 |
Double mechanical seal “back to back”
The faces are not in contact with medium. Flushed liquid must be compatible with the fluid and the flushing pressure has to be bigger than 1 bar referring the body pressure. Suitable for solid medium, abrasive and aggressive. Pressure: up to 25 bar
|
| |
|
 |
Mechanical seal for food
The faces in contact has a very low coefficient of friction. Not depending from the rotating sense. The seal is completely flooded in the medium. Suitable for big viscosity medium with small quantity of solid. Pressure: up to 16 bar.
|
| |
|
 |
Mechanical seal with “quench”
In agreement with specification of the mechanical seal, the flushing not in pressure, is useful for pumps with inverse rotation sense like vertical pumps and for all the application where the product has solid residue and abrasive parts. Pressure: up to 25 bar.
|
| |
|
|
|
| |
|
|
| |
|
|
