Dry running vacuum pumps SIHIdry H2500 pages

Dry running vacuum pumps
SIHIdry H250
GENERAL TECHNICAL DATA
CONSTRUCTION
The compact system SIHIdry H250 is a dry running, screw-spindle pump. The screw shaped rotors counter rotate without contact. The pump inlet is at the top and the outlet at the bottom. This gives top-down pumping for self-draining.
In contrast to conventional machines, both spindles are synchronised electronically and do not need a mechanical gearbox.
This innovative drive concept provides the foundation for allowing the basic unit to be transformed into more intelligent versions for integration within any process control system. This intelligent version of the SIHIdry H250 is able to operate system attributes such as reactor pressure; valve functionality, etc. The data can also be stored and downloaded in order to facilitate good manufacturing practice.
DESIGN
The SIHIdry H250 vacuum system is available with Ex-Protection for the use in both hazardous and non-hazardous areas.
The versatility of the modular unit allows it to be adapted to any process.
Comprising casing and internal screw cooling in its basic form, the machine provides optimum temperature control in order to guard against condensation, corrosion, polymerisation, solvent ignition, etc.
Further temperature control is available with direct gas cooling in order to reduce vapour saturation conditions inside of the pumping chamber.
The drive control protects the machine during times of upset process conditions. Damage due to liquid carry-over is avoided by automatic speed regulation. Once the liquid has been pumped away by the machine, it will return to the required speed.
PROPERTIES
- No oil lubrication or service liquid
- Neither gear box nor transmission fluid
- No mechanical shaft seals
- Rapid dismantling for on-site maintenance
- Pressure resistant casing (test 16 bar)
- Electronic drive without wearing parts
- Process data recording & fault diagnosis
- Accurate and stable temperature profile with inner rotor cooling
Suction capacity
290 m³/h
Final pressure
< 0,1 mbar abs
Gas outlet temperature
135 °C
Power consumption at final pressure
5 kW
Purge gas consumption
max. 20 Nl/min
Cooling Water Tmin
+ 10°C
Cooling Water Tmax
+ 35°C
Sound level
< 63 dB(A)
Weight
ca. 580 kg VACUUM TECHNOLOGY DRY H250
133.76102.55.01 E 04/2008