Shanghai Royal Machinery Co.,Ltd

Air compressors, air dryer, tank , line filters and other related compressed air machine supplier

75kw Oil-Free Screw Air Blower

Product Description:

High Quality Industrial Oil Free Screw Air Blower for Sewage Treatment

General parameters of our screw blower:

Pressure: 0.4-1.2bar
Air flow: 3m3/min-72m3/min
Power: 5.5kw-185kw

What is a screw blower?

Blower type

Rotary screw blowers are positive displacement blowers with precision timing gears that maintain minute clearances between two intermeshing oil-free screw elements that never touch. ... In centrifugal blowers, also called turbo blowers, the energy is transferred from a rotating shaft to air or gas.

blower 2.png

Hitachi Technology Oil free Screw blower head:

What is the difference between a Roots blower and a screw blower?

The roots blower acts like a pump for the air as it goes into the motor, whereas thescrew blower is more like an air compressor in how it forces the atmosphere into the engine. ... The rotors on the screw blower are much different since they're designed to be more like the threads on a screw, hence the name screw blower.

Helical Screw Blower E.jpg

What are the advantages of a screw compressor?

They are good energy conservers – Rotary screw machines are generally energy efficient, and they generate less heat than normal air compressors. They consume less oil than other oil flooded air compressors. In addition, they have minimum oil carryovers.

What is a screw compressor used for?

Rotary-screw compressors are generally used to supply compressed air for larger industrial applications. They are best applied in applications that have a continuous airdemand such as food packaging plants and automated manufacturing systems.

Wastewater treatment

?Lowest aeration blower energy cost, representing 70% of the total operational cost.
Low downtime and low maintenance cost thanks to innovative screw blower technology.
Very wide fow and pressure operational range

Pneumatic conveying – dilute phase

Lowest energy cost, representing up to 80% of the blower life cycle cost.
Low downtime and low maintenance cost thanks to innovative screw blower technology.

Fermentation

• Lowest energy cost, representing up to 80% of the blower

life cycle cost.

• Low downtime and low maintenance cost thanks

to innovative screw blower technology.

• Very wide flow and pressure operational range.

Non-woven textile

• Adjustable flow in order to influence fiber characteristics.

• Energy-efficient blowers to come to the lowest

operational cost of this 24/7 continuous process.

• Point-of-use installation without

noise-preventing measures.

Small belt driven:

Main parameters of our screw blower:

Model No.	Discharge Pressure	0.4bar	0.5bar	0.6bar	0.7bar	0.8bar	0.9bar	1bar	1.1bar	1.2bar
RM100-5.5	Air flow(m3/h)	253	249	248	246	244	243	241	240	239
RM100-5.5	Motor power(kw)	5.5	7.5	7.5	7.5	7.5	11	11	11	11
RM100-5.5VSD	Air flow(m3/h)	287	283	281	278	276	275	273	272	271
RM100-5.5VSD	Motor power(kw)	5.5	7.5	7.5	11	11	11	11	11	15
RM100-7.5	Air flow(m3/h)	335	330	328	325	322	321	319	317	316
RM100-7.5	Motor power(kw)	7.5	7.5	11	11	11	11	15	15	15
RM100-7.5VSD	Air flow(m3/h)	372	366	364	361	358	357	354	352	351
RM100-7.5VSD	Motor power(kw)	7.5	7.5	11	11	11	15	15	15	15
GF160-11	Air flow(m3/h)	570	566	565	563	560	559	557	556	555
GF160-11	Motor power(kw)	11	15	15	15	18.5	18.5	18.5	22	22
GF160-11VSD	Air flow(m3/h)	664	659	657	655	652	651	649	647	646
GF160-11VSD	Motor power(kw)	11	15	15	18.5	18.5	22	22	22	30
GF160-15	Air flow(m3/h)	770	765	762	760	756	755	752	750	749
GF160-15	Motor power(kw)	15	15	18.5	18.5	22	22	30	30	30
GF160-15VSD	Air flow(m3/h)	880	874	871	868	864	863	860	857	856
GF160-15VSD	Motor power(kw)	15	18.5	18.5	22	22	30	30	30	30
GF160-18.5	Air flow(m3/h)	1111	1103	1100	1096	1090	1090	1085	1082	1080
GF160-18.5	Motor power(kw)	18.5	22	30	30	30	30	37	37	37
GF160-122	Air flow(m3/h)	1282	1273	1269	1264	1258	1258	1252	1249	1247
GF160-122	Motor power(kw)	22	30	30	30	37	37	37	45	45
GF160-22VSD	Air flow(m3/h)	1456	1446	1442	1436	1429	1428	1423	1418	1416
GF160-22VSD	Motor power(kw)	22	30	30	37	37	45	45	45	55

Model No.	Discharge Pressure	0.4bar	0.5bar	0.6bar	0.7bar	0.8bar	0.9bar	1bar	1.1bar	1.2bar
RM200l-22	Air flow(m3/h)	1226	1220	1214	1206	1199	1191	1182	1173	1163
RM200l-22	Motor power(kw)	22	30	30	30	37	37	45	45	45
RM200l-22VSD	Air flow(m3/h)	1386	1392	1385	1378	1370	1362	1353	1345	1336
RM200l-22VSD	Motor power(kw)	22	30	30	37	37	45	45	45	55
RM200l-30	Air flow(m3/h)	1637	1630.7	1623.3	1614.9	1606.5	1597.1	1586.6	1575	1616
RM200l-30	Motor power(kw)	30	30	37	37	45	45	55	55	55
RM200l-30VSD	Air flow(m3/h)	1868	1861	1853	1845	1836	1827	1818	1808	1798
RM200l-30VSD	Motor power(kw)	30	37	45	45	55	55	55	75	75
RM200l-37	Air flow(m3/h)	2104	2098	2091	2081	2071	2059	2048	2035	2022
RM200l-37	Motor power(kw)	37	45	45	55	55	55	75	75	75
RM200l-37VSD	Air flow(m3/h)	2435	2427	2417	2407	2395	2382	2369	2354	2339
RM200l-37VSD	Motor power(kw)	37	45	55	55	75	75	75	75	90
RM200l-45	Air flow(m3/h)	2728	2721	2711	2701	2689	2676	2663	2648	2633
RM200l-45	Motor power(kw)	45	55	55	75	75	75	90	90	90
RM200l-45VSD	Air flow(m3/h)	2923	2915	2905	2895	2882	2869	2855	2840	2825
RM200l-45VSD	Motor power(kw)	45	55	75	75	75	75	90	90	90
RM200l-55	Air flow(m3/h)	2975	2964	2955	2945	2936	2927	2920	2912	2901
RM200l-55	Motor power(kw)	55	75	75	75	75	90	90	90	110
RM200l-55VSD	Air flow(m3/h)	3418	3407	3398	3388	3379	3371	3362	3355	3347
RM200l-55VSD	Motor power(kw)	55	75	75	90	90	110	110	110	110
RM200l-75	Air flow(m3/h)	3927	3915	3905	3896	3887	3880	3871	3864	3856
RM200l-75	Motor power(kw)	75	75	90	90	110	110	110	132	132
RM200l-75VSD	Air flow(m3/h)	4495	4481	4469	4454	4442	4431	4422	4413	4405
RM200l-75VSD	Motor power(kw)	75	90	90	110	110	132	132	132	160
RM200l-90	Air flow(m3/h)	5041	5028	5017	5005	4995	4983	4970	4956	4948
RM200l-90	Motor power(kw)	90	110	110	110	132	132	160	160	160
RM200l-90VSD	Air flow(m3/h)	5651	5640	5627	5614	5603	5590	5577	5563	5551
RM200l-90VSD	Motor power(kw)	90	110	132	132	132	160	160	160	185
RM200l-110	Air flow(m3/h)	6098	6085	6072	6060	6047	6036	6028	6020	6012
RM200l-110	Motor power(kw)	110	110	132	132	160	160	185	185	185

Direct driven:

Energy saving compared to Roots blower:

Roots blower:
To deliver a flow of 1600 m³/hr (942 cfm) at a pressure of 0.8 bar(e) (11.6 psig),
the tri-lobe blower consumes 61 kW (82 hp) on average
Oil free screw blower:
To deliver a flow of 1600 m³/hr (942 cfm) at a pressure of 0.8 bar(e) (11.6 psig),
the screw blower consumes 43 kW (58 hp) on average.

Welcome to contact with us for more information.

2.5bar-3.5bar screw air compressors:

Model No.	Power		Pressure	Air capacity	Outlet connect	Weight	Dimension(mm)
	kw	hp	Mpa	m3/min		kg	L	W	H
RM-30L/A	22	30	0.25	6.9	DN50	950	1350	1220	1460
			0.35	5.3
RM-50L/A	37	50	0.25	12.6	DN65	1500	1900	1400	1630
			0.35	9.5
RM-60L/A	45	60	0.25	16	DN65	1850	1900	1400	1630
			0.35	13.5
RM-75L/A	55	75	0.25	21.2	DN80	2100	2100	1400	1750
			0.35	16.8
RM-100L/A	75	100	0.25	26.6	DN80	2500	2860	1640	1860
			0.35	21.2
RM-125L/A	90	125	0.25	30.8	DN100	2800	2860	1640	1860
			0.35	25.5
RM-150L/A	110	150	0.25	39.6	DN100	3500	2860	1640	1860
			0.35	31.8
RM-175L/A	132	175	0.25	46	DN125	3700	3240	2000	2150
			0.35	40.2
RM-220L/A	160	220	0.25	53	DN125	4800	3240	2000	2150
			0.35	46.8
RM-250L/W	185	250	0.25	55.6	DN150	5300	3240	2000	2150
			0.35	51.6
RM-270L/W	200	270	0.25	60.1	DN150	5500	3240	2000	2150
			0.35	55.7
RM-300L/W	220	300	0.25	66.1	DN150	6500	3240	2000	2150
			0.35	61.3

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