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4-72 B4-72 centrifugal fan
Craftsmanship and Quality
Lean design Energy efficient
Advanced aerodynamic design and efficient motor systems provide stable and efficient air flow in various production processes. By optimizing airflow distribution and reducing energy loss, the Shuangjian blower can significantly improve energy efficiency.
Rigorous process to ensure reliable performance of equipment
Shuangjian blower adopts strict standards and measures in quality control. From raw materials into the factory to finished products, every link has undergone strict quality testing and monitoring. Through advanced testing equipment.
International high standard configuration
High quality accessory selection and reliability design provide sufficient equipment strength and durability for the Shuangjian blower, and reduce maintenance costs. Selection of domestic and foreign well-known brand accessories.
Easy maintenance to improve equipment operation rate
The fan is equipped with sliding bearing, thin oil station, high fuel tank and a complete set of safety interlock protection system, and the shell is horizontally divided, and the fan inlet and outlet pipes are horizontally connected with the shell inlet.
Digital processing, higher precision
Hubei Shuangjian has dozens of CNC machine tool production lines and robot welding equipment, from steel plate cutting, bending, planing, milling to painting, all realize digital control, high processing precision, some core components accurate.
Original parts supply, running worry free
Hubei Shuangjian as a set of production and sales in one of the strength of the enterprise, we are responsible for their production of each piece of equipment, to provide customers.
Product Details
4-72 B4-72 centrifugal fan
Brief introduction
4-72 centrifugal fan can be used as indoor ventilation for general factories and large buildings, conveying air and other non-spontaneous combustion, harmless to the human body, and non-corrosive to steel gases. B4-72 fan can be used for ventilation of flammable and volatile gases. No viscous substances are allowed in the gas, and the dust and hard particles contained are not more than 150mg/m3. The gas temperature shall not exceed 80℃. The performance and selection of B4-72 fan and the size of the foundation are consistent with that of 4-72 fan and can be selected according to its sample. The structure of the fan is basically the same as that of type 4-72. NO2.8 ~ 6A adopts the Electromotor of type B35 with flanges and foot, NO6 ~ 1 2C and DElectromotor adopt the YB series corresponding to the Y series in this table, and the installation type is B.
4-72 fan form
Facing from the Electromotor side, the impeller rotates clockwise, which is called right-handed fan, denoted by "right" : The impeller rotates counterclockwise, which is called left cyclone machine, denoted by "left". The outlet level of the fan is expressed by the outlet Angle of the housing. 4-72 fan №2.8 ~ 6 is made into a type when leaving the factory, and the user unit is installed into the required position according to the requirements, and it is not necessary to indicate when ordering. NO2.8 Air outlet position adjustment ranges from 0 to 225, with an interval of 45. No3.2 to 6 The position adjustment of the air outlet ranges from 0 to 225, with an interval of 22.5. No8 to 12 Air exhaust outlet position adjustment range is 0 to 225, interval is 45. Nol6, 20 air outlet position made of three fixed O, 90, l80, can not be adjusted, need to indicate when ordering.
The transmission mode of the fan is A, B, C and D. In the 4-72 fan, №2.8 ~ 6 adopts type A transmission, №6 ~ 12 adopts type c and D transmission, and №16 ~ 20 adopts type B transmission.
4-72 fan structure
The N2.8A ~ 6A in the 4-72 fan is mainly composed of direct connected motors distributed by the impeller, shell, air inlet and other parts. NO6 ~ 20 In addition to the above parts, there are transmission parts, etc.
(1) The impeller is composed of 10 receding airfoil blades, a curved front disk and a flat rear disk. Made of steel plate or cast aluminum alloy, and corrected by dynamic and static balance, air performance is good, high efficiency, smooth operation.
(2) The case is made into two different types. N02.8 ~ 12 chassis as a whole, can not be disassembled. The casing of NO1 6-20 is made of three open type, in addition to the two halves along the middle water plane, the upper half is vertically divided into two halves along the center line, and is connected by bolts.
(3) The air inlet is made of a whole, installed on the side of the fan, and the section parallel to the axis is a curve shape, which can make the gas enter the impeller smoothly, and the loss is small.
(4) The transmission part is composed of a spindle, a bearing box, a rolling bearing, a pulley or a coupling
4-72 fan parameter table
|
Model NO
|
Transmission mode
|
Rotational speed r/min
|
No.
|
Flow
|
Total pressure Pa
|
Internal efficiency ％
|
Internal power kW
|
Required power kW
|
Electromotor
|
Foot bolt GB799-76(4)
|
Ground nut G86170-86(4)
|
Gasket GB96-85(4)
|
||
|
m3/S
|
m3/h
|
Model
|
Power kW
|
|||||||||||
|
2.8
|
A
|
2900
|
1
|
O.314
|
1131
|
994
|
69.3
|
O.45
|
O.67
|
Y90S-2
(B35) |
1.5
|
M8×220
|
M8
|
8
|
|
2
|
0.364
|
1310
|
966
|
73.2
|
0.48
|
0.72
|
||||||||
|
3
|
O.411
|
1480
|
933
|
75.5
|
O.51
|
O.71
|
||||||||
|
4
|
0.461
|
1659
|
887
|
76.8
|
O.53
|
0.74
|
||||||||
|
5
|
0.508
|
1828
|
835
|
76.9
|
0.55
|
O.77
|
||||||||
|
6
|
0.558
|
2007
|
770
|
75.6
|
O.57
|
O.79
|
||||||||
|
7
|
0.605
|
2177
|
702
|
73.2
|
0.58
|
0.81
|
||||||||
|
8
|
O.654
|
2356
|
606
|
69.3
|
O.57
|
O.80
|
||||||||
|
3.2
|
A
|
2900
|
1
|
0.469
|
1688
|
1300
|
69.3
|
O.88
|
1.23
|
Y90L-2
(B35) |
2.2
|
M8×220
|
M8
|
8
|
|
2
|
0.543
|
1955
|
1263
|
73.2
|
O.93
|
1.31
|
||||||||
|
3
|
0.614
|
2209
|
1220
|
75.5
|
O.99
|
1.38
|
||||||||
|
4
|
0.688
|
2476
|
1160
|
76.8
|
1.03
|
1.34
|
||||||||
|
5
|
0.758
|
2729
|
1091
|
76.9
|
1.07
|
1.39
|
||||||||
|
6
|
0.832
|
2996
|
1006
|
75.6
|
1.10
|
1.43
|
||||||||
|
7
|
0.903
|
3250
|
918
|
73.2
|
1.13
|
1.47
|
||||||||
|
8
|
O.977
|
3517
|
792
|
69.3
|
1.11
|
1.45
|
||||||||
|
3.2
|
A
|
1450
|
1
|
0.234
|
844
|
324
|
69.3
|
O.11
|
O.16
|
Y90S-2
(B35) |
1.1
|
M8×220
|
M8
|
8
|
|
2
|
O.272
|
978
|
315
|
73.2
|
O.12
|
O.17
|
||||||||
|
3
|
0.307
|
1104
|
304
|
75.5
|
O.12
|
O.19
|
||||||||
|
4
|
0.344
|
1238
|
289
|
76.8
|
O.13
|
0.19
|
||||||||
|
5
|
0.379
|
1365
|
272
|
76.9
|
O.13
|
0.20
|
||||||||
|
6
|
0.416
|
1498
|
251
|
75.6
|
O.14
|
O.21
|
||||||||
|
7
|
O.451
|
1625
|
229
|
73.2
|
O.14
|
O.21
|
||||||||
|
8
|
0.488
|
1758
|
198
|
69.3
|
O.14
|
0.21
|
||||||||
|
3.6
|
A
|
2900
|
1
|
0.740
|
2664
|
1578
|
74.2
|
1.56
|
2.03
|
Y100L-2
(B35) |
3
|
M10×220
|
M10
|
10
|
|
2
|
O.846
|
3045
|
1531
|
77.8
|
1.65
|
2.15
|
||||||||
|
3
|
0.946
|
3405
|
1481
|
80.3
|
1.73
|
2.25
|
||||||||
|
4
|
1.052
|
3786
|
1419
|
82.1
|
1.81
|
2.35
|
||||||||
|
5
|
1.152
|
4146
|
1343
|
82.6
|
1.86
|
2.42
|
||||||||
|
6
|
1.258
|
4527
|
1256
|
81.8
|
1.92
|
2.50
|
||||||||
|
7
|
1.358
|
4887
|
1144
|
79.5
|
1.95
|
2.53
|
||||||||
|
8
|
1.463
|
|
|
|
|
|
||||||||
Product Atlas
Product Parameters
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Maintenance
1. Daily inspection and maintenance
Appearance inspection: Check the appearance of the blower regularly to confirm that there is no damage, deformation or rust.
Running sound: Monitor the running sound of the blower. If there is abnormal sound, stop the machine immediately for inspection.
Vibration: Check the vibration of the blower regularly to ensure that it is within the allowed vibration range.
2.Lubrication system maintenance
Lubricating oil inspection: check the oil level and quality of lubricating oil regularly to ensure that it is within the specified range, and replace the deteriorated lubricating oil in time.
Grease replacement: For the parts that use grease, it is necessary to replace it regularly to ensure the lubrication effect.
3.Cooling system maintenance
Cooling water inspection: For the blower with water cooling, it is necessary to regularly check the flow rate and temperature of the cooling water to ensure that the cooling effect is good.
Cooler cleaning: Clean the cooler regularly to prevent its blockage affecting the heat dissipation effect.
4.Internal inspection and maintenance
Internal cleaning: Regularly clean the dust and debris inside the blower to avoid damage to the blower.
Fastener inspection: Check the fasteners inside the blower to ensure that they are tight and not loose.
5.Electrical system maintenance
Motor inspection: Check the running status of the motor regularly to ensure its normal operation.
Cable check: Check the connection and insulation of the cable to ensure that there is no damage or aging.
6.Shutdown and maintenance
Shutdown cleaning: When the blower is shut down, thoroughly clean the dust and dirt inside and outside the blower.
Downtime inspection: Use downtime to conduct a thorough inspection of the blower to find and deal with potential problems.
Through the attention and execution of these maintenance details of the blower, it can ensure its long-term stable operation, extend its service life, and improve production efficiency.
Design and development capability
Our company has strong technical research and development capabilities, and has established several research workstations to bring sustained vitality to the improvement and progress of Shuangjian's technical research and development capabilities.
Strict testing
Supporting auxiliary support technology and functional control technology for modern design and manufacturing of new wind turbines, establishing a network CAD system, using deformable simulation analysis software to achieve intelligent product design and process design.
Quality assurance
Our company has developed dozens of quality management documents in accordance with the requirements of the ISO9001:2000 quality management system, including the Quality Manual, Procedure Documents, Incoming Inspection Specification, Process Inspection Specification, Finished Product Inspection Specification, Equipment Operation Regulations, Assembly Operation Manual, and Test Equipment Operation Manual.
