The blade section is from wide to narrow (304-186mm),from thick to thin (43mm-21mm).Adopts the equal chord length principle and relative linear velocity characteristics to ensure the balance pressure of the whole blade to achieve the tip,middle and roots air evenly including the middle.
Blade shape- transverse section,equal width sectionThe blade length is equal with cross section ,blade width is 19CM.High air resistance is not conducive to pushing airflow, holes in the middle, high energy consumption.
Blade material- aviation aluminum sheetAdopt NO.5052H32 1.5mm thickness aviation high grade density aluminum alloy original plate,with high strength and flexibility,bright and durable.
Blade material-Low grade aluminumLow grade aluminum mixed with recycled aluminum for secondary processing, low density, impurities, pores, low toughness and easy to break
Blade weight-lightEach blade 6.7KG,total weight for 5pcs 33.5KG.Smaller blades ,lighter weight, reducing the motor load and extend service life, low energy consumption.
Blade weight-heavy Cross section width equal to the blades, Each blade 10KG,normal 6pcs or 8pcs.Heavy weight, large motor load, high energy consumption.
Blade and petiole -- full mortise and tenon connectionThe convex petiole and concave buffer device are locked with bolts, each blade is riveted with buffer device by 16 rivets,forming the blade, buffer device and petiole as a whole, torque and shear less and less.
Blade weight-heavy Cross section width equal to the blades, Each blade 10KG,normal 6pcs or 8pcs.Heavy weight, large motor load, high energy consumption.
Buffer device-Rubber mat The rubber pad between mounting hole of buffer device and shaped inserts to achieve the flexible connection between petiole and chassis.Rubber mat absorb the most of vibration, improve the motor shaft work conditions, extend the life, more quieter
Buffer device-NoVibration cannot be weakened, resulting petiole and blades loosen,heavy loading, high noise.
Wheel chassis-Integrated hubSpecial-shaped mounting hole and inserts locked each other to prevent the blade from swinging
Conform to aerodynamic equal chord length theory,combined with the relative linear velocity principle,the blade narrows and thins from root to tip till tail then widen,the air is more even and uniform.
2.Aviation aluminum plate
1.5mm thickness 5052 Ultra-high toughness aviation aluminum plate can load more than 3Ton tensile to ensure the blade can deform quickly and absorb external force effectively, It can prevent the blade from breaking,avoid the damage to the motor and other structural parts greatly.
3.Blade high-strength connection
Each blade is fixed with the buffer cavity by 16pcs high-strength rivets, each rivet can load 1.5 ton shear force.
4.Buffer device
The blade and petiole flexible connects with buffer device, the rubber absorbs the most vibration from blades when running.
5.Anti-falling ring
The concave flange are engaged with the convex anti-falling ring each other under the gravity to ensure a reliable connection between the flange and motor.
6.Safety ring
Connect the 5 petioles into a whole to form the sleeve with the frame lower hub to prevent the petioles from falling.
7.Mortise and tenon petiole connection
The convex petiole with concave buffer device form the Joint engaged,eliminate the centrifugal force from the blades when the fan is running and the shear force when the fan starts and stops.
8.High-tensile strength petiole
6061-T6 petiole,high strenght,HB90 hardness,it has good corrosion resistance with 205MPa tensile strength.
9.Wire rope wind protection
Mounting bracket and I Beam winded with 1000KG tensile wire rope to prevent sliding and falling.
10.Wire rope balance protection
Four wire ropes are fixed with building traction to prevent shaking and falling.
11.Abnormal alarm system
The VFD system comes with accident protection.It will automatically alarm and stop work.
12.Real-time monitor and initiative maintenance
Dawang intelligent remote control system realtime monitor the fan operating parameters,motor temperature rise ,fan horizontal level and so on.
1.Comfortable cooling
Simulate 2-3 level natural wind,evaporates the sweat quickly,the body feels cool down 39-45 F.
2.15072m³/min super large air volume
26ft large diameter,2400m effective area,eliminate the muggy,moist,smoke,dust and odor.
3.Comprehensive all direction circulation
Accelerate the air circulation,eliminate the temperature stratification effectively.
4.Fewer noise
Semi-Automatic PET Bottle Blowing Machine Bottle Making Machine Bottle Moulding MachinePET Bottle Making Machine is suitable for producing PET plastic containers and bottles in all shapes.
5.More energy saving
Max 1.2KWH,match to national high efficiency and energy saving standards.