brief introduction
GD30K2 axial flow fanaxial flow fan is widely used in general factories, warehouses, offices, residential ventilation or to enhance the use of heating radiator. If the shell is unloaded, the utility model can be used as a free fan, and can also be arranged in series in the gap of the long exhaust pipe in order to improve the air pressure in the pipeline.
This fan has a total of 46 species, of which 3 leaves, 6 leaves, 8 leaves and 9 leaves with 9 machine number, according to the size of the impeller diameter, arranged in ascending order: No. 3, No. 3.5, No. 4, No. 5, No. 6, No. 7, No. 8, No. 9, No. 10; of which 4 leaves a total of ten aircraft, according to the impeller diameter, ascending order: No. 2.5, No. 3, No. 3.5, No. 4, No. 5, No. 6, No. 7, No. 8, No. 9, No. 10.
The fan is composed of three parts: impeller, casing and fan:
Impeller: composed of blades, wheels, etc.. The blade is made of thin steel plate welded on the outer circle of the wheel according to the required installation angle. Impeller shell ratio (ratio of disc diameter to impeller diameter) d (-) =0.3.
Blades are similar to the shape of stamping, the installation angle: 3 pieces are divided into 10 degrees, 15 degrees, 20 degrees, 35 degrees, five; 4, 6, divided into 15 degrees, 8 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees. The impeller is mounted on the motor shaft, the No. 3 to No. 8 with two kinds of machine speed, No. 9, No. 10 with a motor speed, air volume range of 550 to 49500 cubic meters per hour, the pressure range of 25 - 505.
The Housing Department: hair dryer, chassis and other components, the chassis is divided into two made of thin steel plate and section.
Fan: the fan is an arc streamline, which is made of thin steel plate, which can reduce the inlet loss.
After the actual test and use, the fan design is reasonable, the structure is compact, under the prescribed speed, the wind pressure is stable, stable operation, safe and reliable, strong and durable.
Note: the temperature of the fan should be no more than 45 degrees centigrade.
(two) BT30 (B30K4, B03-11) explosion-proof axial flow fan, impeller part of the production of aluminum (except for the shaft plate), the power switch to explosion-proof motor, switch with explosion-proof switch or switch away from explosive point.
The other part of the ordinary axial fan for the same material, chemical, pharmaceutical, textile industry, air conditioning and discharging flammable volatile gases do not use, the general structure and the axial flow fan is similar to that of the installation process and other process and the axial fan are the same.
Installation and maintenance of ventilator
1, the use of T30 (30K4) type axial flow fan, such as the need to export the pipeline, we must consider the connection with the pipeline, in order to reduce the ventilation pressure in the nozzle due to the proliferation of the loss caused by.
(1) is equal to the diameter of the pipe diameter and the ventilation duct, pipe diffusion loss can be neglected, as shown in figure 1.
(2) when F/F0 < 1.5 (F: F0: ventilation pipe cross-sectional area, barrel basal area) 5-8 times and the length of the pipeline is not less than the inner diameter of the pipe, not the diffuser device, as shown in figure 2.
(3) when the 1.5 < F/F0 > 2.5, pipeline and fan diffuser device must be as shown in figure 4. F1/F0=2.5-3. (F1: the end of the diffuser section area).
2, if used in a longer pipeline, the same type of T30 (30K4) fan can be installed in series (as shown) in order to increase the wind pressure, the two fan spacing should not be too long.
3, the installation should be carefully checked before the fan is due to packaging, transportation damage, deformation, such as to be properly repaired before installation.
4, when installed, should pay attention to check whether some of the loose connection, hairdryer blade spacing should be uniform, not touching.
5, connect the air outlet pipe of the blower weight, should not bear, plus support should be installed. The wind collecting device must be installed in the fan inlet (trumpet).
6, the fan base must be with the ground plane natural joint, can not knock on the base of forced connection, in order to prevent the deformation of the base. The installation should be corrected base, plus pad iron, keep the horizontal position, and then anchor nut.
7, the ventilator can not be lifted.
8, the installation is completed, it is necessary to carry out the first test, the normal operation can be formally used.
9, in the long-term use of the ventilator must not be used again to check whether the connection is solid and reliable and can be used before the trial operation.
10, after the formal operation of the fan, should be checked once a year, the screw is loose, whether the paint off the blade, wire skin is damaged, according to their specific circumstances to be repaired.
11, pay attention to the fan in the operation of abnormal sound, vibration is increased, and should be timely inspection and repair.
Performance selection table
The performance parameters listed in the table are calculated according to the following data according to the data of the highest efficiency point in the performance curve:
Total pressure: H= - P - U22 (mm water column)
Flow: Q= * U2 * 3600 (m 3/)
Shaft power N= (kw)
In type:
P - air density 0.1224 kg 2/ M 4 seconds.
U - impeller speed = (M / s)
D - impeller diameter (m)
N - impeller speed (Rev / min)
Two, if the column does not match the actual speed and impeller table, fan flow, total pressure and shaft power is changed, the relationship is as follows:
Three, if the motor with the diameter is too large, so that the difference between the characteristics of wind turbine performance and =0.3 curve, in the table are marked with an * full pressure. Such as the use of the matching, should maintain the original flow in the case of constant pressure will be reduced by 10%.

T30 (30K4-11) axial fan complete sets of single supply range.