Fiberglass fan

　　Fiberglass fans refer to fans made of fiberglass (FRP). Their appearance and dimensions are exactly the same as steel fans, except that the shell and impeller are made of fiberglass. Their main feature is corrosion resistance and acid and alkali resistance, making them a type of corrosion-resistant fan.
　　The professional manufacturers of fiberglass fans are relatively small, due to the small demand for fiberglass fans nationwide. Why is the demand so low? Because the cost of fiberglass fans is higher than that of steel fans. Ordinary ventilation environments would not choose fiberglass fans, and places with acidic and alkaline gases are limited compared to places with ordinary environments. Therefore, the demand for fiberglass fans is much less than that of steel fans.
　　Since 2008, the production of domestic fiberglass axial flow fans has shifted from manual to mechanized production. Some manufacturers have started using four-column hydraulic presses to produce fiberglass axial flow fan housings. The resulting fans are called molded fiberglass axial flow fans. By 2012, four-column hydraulic presses were also used to produce fiberglass roof fan housings and rain covers. The fans produced are called molded fiberglass roof fans. The mechanized mass production of fiberglass fans has greatly improved production efficiency, reduced manpower and material resources, and lowered production costs.
　　Fiberglass fans are suitable for ventilation and exhaust in office buildings, shopping malls, theaters, hospitals, factory workshops, basements, etc. The transported gas should not contain sticky substances, the gas temperature should not exceed 80℃, and the mass concentration of the medium should not exceed 150mg/M3.
　　Fiberglass Fan Installation and Maintenance
　　1. Improper mechanical installation, misalignment of components, large pre-load
　　2. Poor shaft alignment
　　3. Improper adjustment of machine geometric parameters (such as mating clearance, interference fit, and relative position)
　　4. Large pipeline stress, the machine changes dynamic characteristics and installation accuracy during operation
　　5. Improper long-term placement of the rotor, changes the dynamic balance accuracy, fails to perform maintenance according to the regulations, and destroys the original matching properties and accuracy of the machine

 

　　Cooling tower dedicated fiberglass fans are manufactured using advanced technology. The blades are made of epoxy fiberglass and use a hollow structure airfoil design with foamed plastic filling. Because the fan's air output efficiency is mainly concentrated in the outer edge, the airfoil blades have a larger working surface, resulting in higher efficiency and air volume under the same conditions, and a smaller fan diameter can be used for the same air volume and efficiency. The airfoil streamline design completely overcomes the drawbacks of aluminum plate blades, which produce eddy currents and result in high noise and high power consumption. The special manufacturing process and strict balancing correction ensure the long-term stability of the product's performance, and the high-quality epoxy fiberglass material ensures the product's corrosion resistance. The special curing process ensures the mechanical strength of the product, making it more suitable for various harsh working environments. Actual tower applications show that the fan blades have high efficiency, large flow rate, suitable wind pressure, high coincidence between the aerodynamic performance characteristic curve and the measured data, beautiful appearance, bright colors, and unique style.

　　This fan is available in various specifications, including 3.6 meters, 4 meters, 4.2 meters, 4.7 meters, 5.5 meters, 6 meters, 7 meters, 7.7 meters, 8 meters, 8.53 meters, 9.14 meters, and 10.06 meters, and is widely used in the circulating water systems of cooling towers in modern enterprises such as petroleum, chemical, power generation, steelmaking, ironmaking, coking, and textile industries. This machine can be used not only for new cooling towers but also for old ones, demonstrating strong applicability.

　　To ensure that the fan's performance better meets user requirements, our factory has widely absorbed advanced technologies and research results from similar domestic products, and through continuous improvement, the fan has reached a leading domestic level. After long-term operation in the factory and user application, the various performance indicators of the fan have met the design requirements. Compared with similar domestic products, this fan has large air volume, stable transmission, compact structure, small size, low noise, long lifespan, reliable sealing, and convenient maintenance. The exposed fasteners are all made of stainless steel or zinc-plated, comparable to imported products.

 

　　This series of cooling tower fans are equipped with Y-series motors, with a rated voltage of 380V and a working frequency of 50Hz. If users need other types of motors, please specify when ordering.

　　The connecting shaft consists of two half-couplings and a transmission shaft. The half-couplings and the transmission shaft are connected by an elastic bushing and pin. This structure is not only easy to disassemble but also has stable transmission, corrosion resistance, and the ability to compensate for axial displacement, improve shaft stiffness, and reduce vibration. The transmission shaft undergoes dynamic balancing tests to ensure that the balance accuracy meets the requirements.

　　This reducer uses two-stage gear transmission. The first stage is a pair of spiral bevel gears, and the second stage is a pair of helical cylindrical gears. The gear material is 20CrMnTi, which has high corrosion resistance and impact resistance after carburizing and heat treatment. The input shaft end of the reducer uses a double-skeleton seal structure, and the output shaft end uses a labyrinth seal. Each sealing surface is reliably sealed. This reducer has the characteristics of small vibration, low noise, and stable operation.

　　The hub has high strength. Its outer surface has been galvanized and corrosion-protected, and it can be used for a long time in various corrosive gases and water vapor environments. The hub and reducer are connected by a tapered sleeve, which has a good centering effect. This structure has a large blade angle adjustment range, accurate positioning, and convenient installation and maintenance.

　　The blade profile is designed using internationally advanced airfoils, with good aerodynamic performance and high efficiency. The blades are made of high-strength fiberglass molding, with the advantages of high strength, light weight, corrosion resistance, and convenient installation and disassembly. After the blades are formed, they undergo a large moment balance test to ensure the design requirements.

　　The external oil level gauge consists of two pipes. The gas pipe, which vents, is drawn from the reducer upper cover. The oil pipe, which is used to observe the oil level, is drawn from the lower part of the reducer.