Roots blowers (over pressure, underpressure)

CONTACT

VAKUUM BOHEMIA s.r.o.
Lidická kolonie 47
586 01 Jihlava

Phone: +420 567 322 487
Service: +420 567 330 556

E-mail: info@vakuum-bohemia.cz

DOWNLOAD CATALOGUE

VAKUUM BOHEMIA offers sale and servicing of Roots blowers. Roots blowers are used as central blower stations for air transportation. Blowers generate overpressure or negative pressure or both.

Operating principle of Roots blowers

During rotation, rotors do not touch each other or the stator. The vacuum pump is oil-free. Oil is only located in the gearbox and is not in direct contact with the medium. The stator contains two counter-rotating, three-tipped pistons. The medium is contained in the space between the rotors and the stator. It is compressed, pumped through the housing to the gas discharge by rotary motion, and discharged. Piston rotation is driven by a pair of gear wheels located on the shaft ends in the gearbox, separated from the compression chamber.

Parameters of Roots blowers:

pumping speed: from 300 m³/h up to 10 000 m³/h
motor power: from 1.5 kW to 315 kW
max. underpressure: -0.8 bar
max. overpressure: +1 bar

Advantages of Roots blowers:

fault-free operation
long service life
possibility of control with a frequency converter
clean air without oil

Our services:

vacuum and pressure systems with Roots blowers
sale of Roots blowers
sale of spare parts
repair and overhaul of Roots blowers
supply of control units

Applications:

pneumatic conveyance
wood processing and printing
central vacuum systems
production of plastics – the environment – aeration

List of models for NEGATIVE PRESSURE APPLICATIONS

Model	Pumping speed [m3/h]	Max. vakuum [mbar]	Wattage [kW]	RPM
VBT 30.10	300	500	1,5 - 5,5	diff. versions
VBT 30.20	420	500	1,5 - 7,5	diff. versions
VBT 30.30	550	500	1,5 - 11	diff. versions
VBT 31.20	750	500	1,5 - 15	diff. versions
VBT 31.30	1110	500	2,2 - 22	diff. versions
VBT 32.20 - DN 100	1320	500	3.30	diff. versions
VBT 32.20 - DN 150	1530	500	11.30	diff. versions
VBT 32.30	2100	500	3.37	diff. versions
VBT 33.20	2400	500	5,5 - 45	diff. versions
VBT 33.30 - DN 150	2700	500	7,5 - 55	diff. versions
VBT 33.30 - DN 200	3450	500	18,5 - 75	diff. versions
VBT 34.20	3600	500	11.75	diff. versions
VBT 34.30 - DN 200	3700	500	7,5 - 75	diff. versions
VBT 34.30 - DN 250	5220	500	30 - 110	diff. versions
VBT 35.10	4100	500	5,5 - 75	diff. versions
VBT 35.20	5520	500	7,5 - 110	diff. versions
VBT 36.20	9300	500	18,5 - 160	diff. versions
VBPT 30.20	350	200	04.11	diff. versions
VBPT 31.20	660	200	7,6 - 18,5	diff. versions
VBPT 32.20	1400	200	11.45	diff. versions
VBPT 33.20	2200	200	18,5 - 75	diff. versions
VBPT 34.20	3300	200	22 - 110	diff. versions
VBPT 35.20	5100	200	37 - 160	diff. versions
VBPT 36.20	8300	200	75 - 250	diff. versions

List of models for OVERPRESSURE APPLICATIONS

Model	Pumping speed [m3/h]	Max. Overpressure [mbar]	Wattage [kW]	RPM
VBT 60.20	180	500	1,5 - 4,0	diff. versions
VBT 60.30	250	1000	2,2 - 5,5	diff. versions
VBT 30.10	280	900	1,5 - 11	diff. versions
VBT 30.20	400	800	2,2 - 15	diff. versions
VBT 30.30	550	1000	2,2 - 18,5	diff. versions
VBT 31.20	750	800	3.30	diff. versions
VBT 31.30	1150	1000	4.30	diff. versions
VBT 32.20 - DN 100	1320	800	5,5 - 55	diff. versions
VB2.20 - DN 150	1500	1000	22 - 55	diff. versions
VBT 32.30	2200	800	7,5 - 75	diff. versions
VBT 33.20	2500	1000	11.90	diff. versions
VBT 33.30 - DN 150	2700	700	15 - 90	diff. versions
VBT3.30 - DN 200	3500	700	37 - 90	diff. versions
VBT 34.20	3500	1000	15 - 132	diff. versions
VBT 34.30 - DN 200	3500	800	22 - 90	diff. versions
VBT 34.30 - DN 250	5000	8000	55 - 132	diff. versions
VBT 35.10 - DN 200	3600	1000	18,5 - 132	diff. versions
VBT 35.10 - DN 250	4200	1000	55 - 160	diff. versions
VBT 35.20	5600	800	30 - 160	diff. versions
VBT 36.20	9500	800	55 - 315	diff. versions