D Type Multi-stage Centrifugal Blower

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About D Type
At first glance, the D type multi-stage centrifugal blower has compact structure and elegant appearance. It is easy to install and maintain, and works in high stability. This is series of squirrel cage blower is widely applied to sewage treatment, blast furnace, coal preparation plant, mine floatation, chemical gas, vacuum, and gas conveying, etc.

Specifications
1. Inlet flow: 20~250 m3/min
2. Discharge pressure: 1000~10000mmH2O
3. Vacuum: -800~5000 mmH2O

Features
1. Smooth operation: the design of the impeller is optimized so that the axial force is reduced to a minimum, and the efficiency is improved. By static and dynamic balance correction, the centrifugal blower runs smoothly. Without any extra vibration absorber, the vibration amplitude of bearings is ≤ 0.04mm.

2. Low noise: there is no mechanical friction when the blower is running. The reasonable curve of impeller reduces the sound to the minimum. Since noise generated by a multistage centrifugal blower is a high-frequency one, as long as there is an obstacle, the sound transmission will be significantly attenuated, so there is almost no noise outside the blower’s room.

3. Oil-free blower: Bearings are lubricated with grease, and the life of bearings can be more than two years. The centrifugal blower does not produce oil and gas in the operation. For some special applications, the blower may use molybdenum disulfide lithium grease lubricated bearings.

4. Impeller: the impeller is featured to have special curve to reduce internal leakage and improve volumetric efficiency.

5. Easy to be adjusted: the centrifugal blower has inlet butterfly valves regulating the flow, and outlet butterfly valves adjusting the pressure.

6. Drive method: the system is driven by asynchronous motor drive. The motor selection among different voltages depends on the user’s grid.

7. Sealing: inlet rings are equipped for impeller of every stage, and labyrinth seals are set between stages and at the two ends of housing to prevent gas leakage.

8. Cooling: because the impeller progressively compresses gas, the temperature of outlet housing is much higher than that of inlet housing. Both air cooling and water cooling structures are designed for exhaust bearing pedestal to prolong bearings’ service life.

9. Bearing temperature alarm: attachments of centrifugal blower include a temperature control box, connected via PT100 with bearings. When the bearing temperature exceeds the set temperature, the temperature control box will automatically send alarms.

10. Transmission: coupling transmission is adopted, but depending on the equipment and processes, different transmission mode may also be selected.

Main Body of D Type Multi-stage Centrifugal Blower

Assembling Drawing of D Type Blower Package

Art No.	Inlet Airflow (m3/min)	Inlet Pressure kpa	Inlet Tempera- ture (℃)	Discharge Differential Pressure		Rotary Speed (r/min)	Shaft Power (KW)	Motor Power (KW)	Blower Weight (kg)
Art No.	Inlet Airflow (m3/min)	Inlet Pressure kpa	Inlet Tempera- ture (℃)	kpa	mm.h2o	Rotary Speed (r/min)	Shaft Power (KW)	Motor Power (KW)	Blower Weight (kg)
D20-1.4	20	98	20	39.2	4000	2950	20	30	2200
D20-1.5	20	98	20	49	5000	2950	24	30	2300
D20-1.6	20	98	20	58.8	6000	2950	29	37	2600
D20-1.7	20	98	20	68.6	7000	2950	34	45	3000
D25-1.4	25	98	20	39.2	4000	2950	25	30	2200
D25-1.5	25	98	20	49	5000	2950	29	37	2300
D25-1.6	25	98	20	58.8	6000	2950	34	45	2600
D25-1.7	25	98	20	68.6	7000	2950	39	55	3000
D30-1.4	30	98	20	39.2	4000	2950	28	37	2200
D30-1.5	30	98	20	49	5000	2950	33	45	2300
D30-1.6	30	98	20	58.8	6000	2950	41	55	2600
D30-1.7	30	98	20	68.6	7000	2950	43	55	3000
D35-1.4	35	98	20	39.2	4000	2950	32	37	2200
D35-1.5	35	98	20	49	5000	2950	37	45	2300
D35-1.6	35	98	20	58.8	6000	2950	46	55	2600
D35-1.7	35	98	20	68.6	7000	2950	55	75	3000
D40-1.4	40	98	20	39.2	4000	2950	36	45	2200
D40-1.5	40	98	20	49	5000	2950	44	55	2300
D40-1.6	40	98	20	58.8	6000	2950	54	75	2600
D40-1.7	40	98	20	68.6	7000	2950	61	75	3000
D45-1.4	45	98	20	39.2	4000	2950	40	55	2200
D45-1.5	45	98	20	49	5000	2950	48	55	2300
D45-1.6	45	98	20	58.8	6000	2950	56	75	2600
D45-1.7	45	98	20	68.6	7000	2950	65	75	3000
D50-1.4	50	98	20	39.2	4000	2950	45	55	2200
D50-1.5	50	98	20	49	5000	2950	55	75	2300
D50-1.6	50	98	20	58.8	6000	2950	66	75	2600
D50-1.7	50	98	20	68.6	7000	2950	74	90	3000
D50-1.8	50	98	20	78.5	8000	2950	80	90	3200
D55-1.4	55	98	20	39.2	4000	2950	50	55	2200
D55-1.5	55	98	20	49	5000	2950	60	75	2300
D55-1.6	55	98	20	58.8	6000	2950	71	90	2600
D55-1.7	55	98	20	68.6	7000	2950	79	90	3000
D55-1.8	55	98	20	78.5	8000	2950	90	110	3200
D60-1.4	60	98	20	39.2	4000	2950	53	75	2200
D60-1.5	60	98	20	49	5000	2950	65	75	2300
D60-1.6	60	98	20	58.8	6000	2950	78	90	2600
D60-1.7	60	98	20	68.6	7000	2950	88	110	3000
D60-1.8	60	98	20	78.5	8000	2950	96	110	3200
D65-1.4	65	98	20	39.2	4000	2950	58	75	2200
D65-1.5	65	98	20	49	5000	2950	70	90	2300
D65-1.6	65	98	20	58.8	6000	2950	78	90	2600
D65-1.7	65	98	20	68.6	7000	2950	93	110	3000
D65-1.8	65	98	20	78.5	8000	2950	105	132	3200
D70-1.4	70	98	20	39.2	4000	2950	61	75	2600
D70-1.5	70	98	20	49	5000	2950	74	90	2800
D70-1.6	70	98	20	58.8	6000	2950	88	110	3200
D70-1.7	70	98	20	68.6	7000	2950	101	110	3700
D70-1.8	70	98	20	78.5	8000	2950	108	132	4200
D75-1.4	75	98	20	39.2	4000	2950	66	75	2600
D75-1.5	75	98	20	49	5000	2950	79	90	2800
D75-1.6	75	98	20	58.8	6000	2950	93	110	3200
D75-1.7	75	98	20	68.6	7000	2950	106	132	3700
D75-1.8	75	98	20	78.5	8000	2950	116	132	4200
D80-1.4	80	98	20	39.2	4000	2950	71	90	2600
D80-1.5	80	98	20	49	5000	2950	87	110	2800
D80-1.6	80	98	20	58.8	6000	2950	104	132	3100
D80-1.7	80	98	20	68.6	7000	2950	110	132	3700
D80-1.8	80	98	20	78.5	8000	2950	117	160	3900
D85-1.4	85	98	20	39.2	4000	2950	76	90	2600
D85-1.5	85	98	20	49	5000	2950	92	110	2800
D85-1.6	85	98	20	58.8	6000	2950	109	132	3100
D85-1.7	85	98	20	68.6	7000	2950	116	160	3700
D85-1.8	85	98	20	78.5	8000	2950	123	160	3900
D90-1.4	90	98	20	39.2	4000	2950	80	90	2600
D90-1.5	90	98	20	49	5000	2950	96	110	2800
D90-1.6	90	98	20	58.8	6000	2950	106	132	3200
D90-1.7	90	98	20	68.6	7000	2950	121	160	3700
D90-1.8	90	98	20	78.5	8000	2950	135	160	4200
D100-1.4	100	98	20	39.2	4000	2950	89	110	2600
D100-1.5	100	98	20	49	5000	2950	108	132	2800
D100-1.6	100	98	20	58.8	6000	2950	126	160	3100
D100-1.7	100	98	20	68.6	7000	2950	134	160	3700
D100-1.8	100	98	20	78.5	8000	2950	146	200	3900
D110-1.4	110	98	20	39.2	4000	2950	98	110	2600
D110-1.5	110	98	20	49	5000	2950	120	160	2800
D110-1.6	110	98	20	58.8	6000	2950	129	160	3200
D110-1.7	110	98	20	68.6	7000	2950	148	200	3700
D110-1.8	110	98	20	78.5	8000	2950	165	200	4200
D120-1.5	120	98	20	49	5000	2950	132	160	4400
D120-1.6	120	98	20	58.8	6000	2950	154	200	4900
D120-1.7	120	98	20	68.6	7000	2950	162	200	5300
D120-1.8	120	98	20	78.5	8000	2950	176	200	6000
D120-1.9	120	98	20	88.3	9000	2950	193	220	6600
D120-2.0	120	98	20	98	10000	2950	212	250	7000
D130-1.5	130	98	20	49	5000	2950	135	160	4400
D130-1.6	130	98	20	58.8	6000	2950	163	200	4900
D130-1.7	130	98	20	68.6	7000	2950	170	200	5300
D130-1.8	130	98	20	78.5	8000	2950	190	220	6000
D130-1.9	130	98	20	88.3	9000	2950	208	250	6600
D130-2.0	130	98	20	98	10000	2950	228	280	7000
D140-1.5	140	98	20	49	5000	2950	146	160	4400
D140-1.6	140	98	20	58.8	6000	2950	165	200	4900
D140-1.7	140	98	20	68.6	7000	2950	183	220	5300
D140-1.8	140	98	20	78.5	8000	2950	204	250	6000
D140-1.9	140	98	20	88.3	9000	2950	224	280	6600
D140-2.0	140	98	20	98	10000	2950	245	280	7000
D150-1.5	150	98	20	49	5000	2950	161	200	4400
D150-1.6	150	98	20	58.8	6000	2950	185	220	4900
D150-1.7	150	98	20	68.6	7000	2950	198	250	5300
D150-1.8	150	98	20	78.5	8000	2950	220	280	6000
D150-1.9	150	98	20	88.3	9000	2950	245	280	6600
D150-2.0	150	98	20	98	10000	2950	265	315	7000
D160-1.5	160	98	20	49	5000	2950	167	200	4400
D160-1.6	160	98	20	58.8	6000	2950	182	220	4900
D160-1.7	160	98	20	68.6	7000	2950	209	250	5300
D160-1.8	160	98	20	78.5	8000	2950	234	280	6000
D160-1.9	160	98	20	88.3	9000	2950	257	315	6600
D160-2.0	160	98	20	98	10000	2950	280	355	7000
D180-1.5	180	98	20	49	5000	2950	190	220	5100
D180-1.6	180	98	20	58.8	6000	2950	225	280	5600
D180-1.7	180	98	20	68.6	7000	2950	245	280	6000
D180-1.8	180	98	20	78.5	8000	2950	265	315	6600
D180-1.9	180	98	20	88.3	9000	2950	290	355	7000
D180-2.0	180	98	20	98	10000	2950	321	400	7200
D200-1.5	200	98	20	49	5000	2950	210	250	5300
D200-1.6	200	98	20	58.8	6000	2950	245	280	5700
D200-1.7	200	98	20	68.6	7000	2950	289	355	6300
D200-1.8	200	98	20	78.5	8000	2950	295	355	6700
D200-1.9	200	98	20	88.3	9000	2950	325	400	7200
D200-2.0	200	98	20	98	10000	2950	355	400	7500
D250-1.5	250	98	20	49	5000	2950	264	315	5300
D250-1.6	250	98	20	58.8	6000	2950	320	400	5700
D250-1.7	250	98	20	68.6	7000	2950	265	450	6300
D250-1.8	250	98	20	78.5	8000	2950	388	450	6700
D250-1.9	250	98	20	88.3	9000	2950	410	500	7200
D250-2.0	250	98	20	98	10000	2950	441	500	7500
D300-1.5	300	98	20	49	5000	2950	294	355	5300
D300-1.6	300	98	20	58.8	6000	2950	356	450	5700
D300-1.7	300	98	20	68.6	7000	2950	430	500	6300
D300-1.8	300	98	20	78.5	8000	2950	441	500	6700
D300-1.9	300	98	20	88.3	9000	2950	481	560	7200
D300-2.0	300	98	20	98	10000	2950	528	630	7500
D350-1.5	350	98	20	49	5000	2950	345	450	6600
D350-1.6	350	98	20	58.8	6000	2950	402	500	7800
D350-1.7	350	98	20	68.6	7000	2950	461	560	9000
D350-1.8	350	98	20	78.5	8000	2950	515	630	9500
D350-1.9	350	98	20	88.3	9000	2950	565	630	9900
D350-2.0	350	98	20	98	10000	2950	625	710	10500
D400-1.5	400	98	20	49	5000	2950	394	450	6600
D400-1.6	400	98	20	58.8	6000	2950	461	500	7800
D400-1.7	400	98	20	68.6	7000	2950	532	710	9000
D400-1.8	400	98	20	78.5	8000	2950	586	710	9500
D400-1.9	400	98	20	88.3	9000	2950	645	800	9900
D.400-2.0	400	98	20	98	10000	2950	705	800	10500

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