Centrifugal Ventilation Exhaust | Extractor Air Fans for Dust C6-48 Series

Centrifugal Ventilation Exhaust | Extractor Air Fans for Dust C6-48 Series

Dust-exhausting centrifugal Fan type C6-48 is mainly used for exhausting air mixture of woodwool, fiber and dust etc. others that are similar in performance may also be selected.Recently, FC6-48 is often used in textile industry is derived from type C6-48.
Product description

PURPOSE
Dust-exhausting centrifugal Fan type C6-48 is mainly used for exhausting air mixture of woodwool, fiber and dust etc. others that are similar in performance may also be selected.Recently, FC6-48 is often used in textile industry is derived from type C6-48.


TYPE
The fan is manufactured With a single inlet and has seven different sizes,
№3.15, №4, №5, №6.3, №8, №10, №12.5.If user needs other sizes, please note when purchasing.
The fan can be made of 2 types of rotation i.e, right and left. Viewing from one end of the motor, it is called as clock-wise fan if the impeller rotates clock-wise, symbolized with"right", On athe contrary, it is called as counter-clock-wise fan if the impeller rotates counter-clockwise, symbolized with"left".
The outlet position of the fan can be expressed from the outlet angle of the casing.It can be made 6 kinds of angles which are 0°, 45°, 90°, 135°, 180°, 225°, from both"Right"and"left".


STRUCTURE
The fan consists of impeller, casing, inlet, diving unit and etc.
Impeller — Ten backward-curved blades, welded between the circular conic cover and flat disc, will guarantee a smooth running after being static and dynamic balanced.
Casing — To be welded into a volute with normal steel plate.
Inlet — To be integrated into a convergent streamlined structure and bolted on the front cover.
Driving unit — It consists of main shaft, bearing box, belt pulley and etc. The shaft is made of super steel, and the bearing box is of a integral structure with rolling bearing which are to be lubricated with grease.


PERFORMANCE AND SELECTION
Non-dimensional performance table and curve for №.10 sample is only given. Other performance is deduced from that.

The calculation formula of non-dimensional performance curve into the dimensional is:

11.jpg

In which,
Q —  Flow  (m3/h)
ρ—  Density of inlet gas  (kg/m3
p —  Total pressure  (Pa)
Nin —  Inner power  (kW)
D—  Outside diameter of impeller blade end  (m)
Nre —  Required power  (kW)
U—  Line speed of outside end of impeller blade  (m/s)
K —  Storing factor of motor
K—  Total pressure compressibility
η—  Mechanical efficiency belt driven take 0.95(belt diven)


Table.1  Non-dimensional performance table of type C6−48 №10


1

2

3

4

5

6

7

φ

0.100

0.124

0.149

0.173

0.197

0.222

0.246

ψ

0.617

0.603

0.574

0.540

0.504

0.463

0.418

Ψd

0.0276

0.0425

0.614

0.0829

0.1077

0.1370

0.1700

λ

0.0837

0.0965

0.1083

0.1180

0.1270

0.1360

0.1442

ηin

0.737

0.775

0.790

0.792

0.782

0.756

0.713


22(001).jpg

Fig.1  Non-dimensional performance curve of type C6−48 №10


Table.2  motor conservative factor

Shaft power(kW)

<0.5

>0.5~1

>1~2

>2~5

>5

K value

1.5

1.4

1.3

1.2

1.15


The performance of The fan normally indicates the performance of transferring air under the standard state. The standard state indicates atmospheric pressure Pa=101325Pa, atmospheric temperature t=20℃, relative humidity X=50%, air density ρ=1.2 kg/m3.


If it is in non-standard state when operating, the performance of non-standard standard state must be converted to the performance of standard state. And then select fan according to the converted performance. The converting formula is as follows:

33.jpg

Where:

ηin  — Inner efficiency
n — Speed(r/min)
With footnote 0 symbolizes the standard state, without footnote 0 symbolizes the service state.


SUPPLY SCOPE OF FAN UNIT
One fan, one mating motor, a pair(two sets) of motor slide rail, a set of foundation bolts ( 4 sets for №3.15~6.3 and 8 sets for №8 and above), one motor pulley and a pair of triangle belt.


PURCHASE INFORMATION
When purchasing, indicate the size, speed, pressure, flow, discharge angle and rotating direction of the fan, and the model, power, and speed of the motor.


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