-Structure type of axial flow fan Fiberglass axial flow fan is pressed by a hydraulic press. It has higher density and higher strength. It has the characteristics of low price, fast supply, beautiful appearance, convenient disassembly and assembly, high smoothness, wear resistance and adjustable color. Etc.
The 3-series axial flow fan has determined the fan blade airfoil through model test research, and adopted a cylindrical hub structure, which structurally reduces flow loss, thus increasing the fan efficiency to , based on the inlet circle area. Calculated based on the outlet ring area, the specific sound level is reduced by 3.B
The 3-type series axial flow fans are divided into 3 machine numbers according to the impeller diameter, ranked in order..., 3., 3., ,.,,.,.3,.,.,.,.,. Each machine number is divided into,,3 and other blade installation angles.
Each model of the 3-type axial flow fan adopts a direct-coupled structure between the impeller and the motor. It is equipped with 3 speeds, namely,, r/, and air intake under the condition that the impeller peripheral speed does not exceed /. The direction is on the impeller side.
The 3-type fiberglass axial flow fan is a derivative series of the 3-type axial flow fan and is an anti-corrosion fan
. Made of glass fiber reinforced plastics through mechanical molding, it has high strength, damage resistance and corrosion resistance. The metal parts are made of stainless steel or sprayed with an anti-corrosion layer, which can effectively prevent all parts of the fan from being corroded.
- type axial flow fan is also a derivative of type 3 axial flow fan. It is a special fan for explosion-proof occasions and is equipped with an explosion-proof motor
. The key components are covered with an anti-static surface or made of non-ferrous metals, which can effectively prevent Generating frictional static electricity and spark leakage from electrical components.
Type 3 axial flow fan
The performance and appearance dimensions are consistent with the type 3 axial flow fan. The performance of the Type 3 axial flow fan is different from that of the Type 3 axial flow fan, but the overall dimensions are the same.
Note: The equipped motor is three-phase.
Applicable occasions
3-type axial flow ventilation is suitable for ventilation, air supply and exhaust of various civil and industrial buildings.
Type 3 anti-corrosion axial flow fan
Suitable for installation and use in chemical plants, laboratories, basements, baths, etc., to convey corrosive gases, acidic and alkaline gases and high temperature gases.
Type explosion-proof ventilator
is a special explosion-proof machine, suitable for installation and use in oil and gas boiler rooms, high-concentration dust workshops, oil depots, gas storage stations, explosive goods storage warehouses and other occasions with explosion-proof requirements. Can transport gases with flammable, explosive and volatile properties.
Roof fan structural form:
Axial flow roof fan
It is composed of impeller, air duct, hood, transmission parts, loose-leaf damper, anti-bird net, safety net and other components. The fan's duct, hood, and impeller components can be made of fiberglass, which reduces the weight of the entire machine and has good corrosion resistance. According to the different requirements of air volume, wind pressure, and noise in the use site, the following two types of fans are selected: Axial flow roof fans, code-named type, have the characteristics of large air volume and lower pressure than centrifugal fans. Centrifugal roof fans, code-named type, are suitable for occasions with small air volume and high pressure requirements. The series of low-noise roof fans are widely used in the air supply and exhaust of light industrial plants and high-end civil buildings. They are especially suitable for the discharge of humid and corrosive gases. The medium temperature does not exceed
℃. The gas is not allowed to contain excessive viscous substances, including The amount of dust is less than
Installation Instructions
, be fully familiar with the fan samples, familiar with the fan specifications, form, impeller rotation direction and airflow inlet and outlet direction, etc. Before installing the fan, check whether the impeller has any friction, and Conduct a comprehensive inspection of each component to see if the accessories are complete and whether the connection of each component is strong. Carefully check whether the fan blades are damaged or deformed due to transportation. Otherwise, they should be repaired before installation.
The air duct connecting the inlet and outlet of the fan should have separate support. It is not allowed to add the weight of the pipe to the components of the fan. When installing the fan, attention should be paid to the horizontal position of the fan, the joint surface between the fan and the foundation and the air outlet. The connections of the pipes should be adjusted so that they fit naturally and no forced connections are allowed.
After the fan is installed, pull the impeller by hand or lever to check whether it is too tight or rubbed, and whether there are any objects that hinder the rotation. Only if there are no abnormalities can the test run be carried out. The transmission device of the fan will be exposed. Some parts should have protective covers (provided by the user). If the air inlet of the fan is not connected to the duct, a protective net or other safety device (prepared by the user) is also required.
The fan wiring must be correct and reliable, the fan shell should be properly grounded, and the grounding must be reliable. The power supply to the fan must be complete and comply with relevant requirements. Electrical wiring must be done by an electrician with professional knowledge
The structural form of a centrifugal fan:
A type fan is mainly composed of an impeller, a casing, an air inlet, a motor and other parts. №～In addition to the above parts, there is also a transmission part.
Impeller: It consists of a backward-inclined airfoil blade, a curved front disc and a flat rear disc. It is made of steel plate and has been corrected by dynamic and static balance. It has good air performance, high efficiency and smooth operation.
Case: Made into two different types. Among them, the casing of №.~ is made as a whole and cannot be disassembled. The casing of №.~ is made of three-open type. In addition to being divided into two halves along the middle horizontal plane, the upper part is divided into two halves vertically along the center line and fixed with bolts. connect.
Air inlet: It is made of a whole piece and installed on one side of the fan. The cross section parallel to the axial direction is a curved switch, which can make the air flow smoothly into the impeller with less loss.
Transmission: composed of main shaft, bearing box, flow bearing, pulley or coupling
★
This fan can be used for ventilation of flammable and volatile gases. There is no viscous substance allowed in the gas, and the dust and hard particles contained are not larger than //. The gas temperature must not exceed the model. The performance, options and foundation dimensions of the fan are consistent with the model and can be selected according to the sample. Explosion-proof fan type centrifugal fan is mainly used to transport corrosive gases, but the gas transported must not contain viscous substances, the dust and hard particles contained should not be greater than /3, and the gas temperature must not exceed.
Type centrifugal ventilator is made of stainless steel, fiberglass or other corrosion-resistant materials, and its performance and foundation dimensions are the same as -Type centrifugal ventilator.
Viewed from the side of the motor, if the impeller rotates clockwise, it is called a right-hand fan, and if the impeller rotates counterclockwise, it is called a left-hand fan, which is represented by the left.
The outlet position of the fan is expressed by the angle of the air outlet of the casing. - type fans are all made into one type when leaving the factory, and the user can install them in the required position according to the requirements. There is no need to specify when ordering. Among them, №. The adjustment range of the air outlet position is ~, and the interval is №. The air outlet position is made into three fixed positions, , and cannot be adjusted. Please indicate it when ordering.
Transmission mode
The transmission modes of the fan are: B, and four types. Among the - type fans, №.~ adopts type transmission, №~ adopts type transmission, and №~ adopts B type transmission.
Formula represents a direct-coupled transmission with a motor
Formula represents a cantilever support device, belt drive, and the pulley is in the middle of the bearing
Formula represents a cantilever support device, belt drive, and the pulley is outside the bearing
< br/> type represents a cantilever support device, and a coupling is used to connect the transmission.
Zaoqiang County Runyuan FRP Co., Ltd. is one of the province's largest professional manufacturers of central air conditioning and various fiberglass products. It can independently design, manufacture and install central air conditioning projects< br/>Main products: Grating series: FRP grating, trench cover, pultruded grating, cover grating, sand-paved grating, double-layer microporous grating
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Fan series: centrifugal fan, axial flow fan, roof fan , diagonal flow fans, smoke exhaust fans, wall axial flow fans
Molded series: manhole covers, pipe fittings, axial flow fans, blades
Wrapping series: pipes, tanks, cable tubes
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Hefei FRP roof fan FRP fan BF4-72 type