1. features

1, many types and specifications, a wide range of applications: according to the different requirements of the use of air volume, wind pressure and noise, choose the following three types of fans;

A, axial flow roof fan: code for the DWT-I type, with a large air volume, the pressure is lower than the centrifugal fan characteristics. At the same time, according to user requirements can also be designed into a two-way rotation reversible, with the characteristics of positive and negative conditions equivalent:

B, centrifugal roof fan: code-named DWT-II type, DWT-II type two types, suitable for small air volume and high pressure requirements of the occasion;

C, no motor roof fan: code-named DWT-IV type, suitable for steel structure roof, is the first choice for environmental protection fan in the new century. 2, high efficiency, low noise, the fan system adopts advanced CAD system software, through multi-objective optimization design and development. In this series of fans, the 1200, 1400, 1500, 1600, 2000/2200 and 2400mm fans adopt the method of changing the air volume and air pressure with the same diameter, different rotating speeds and different angles to meet the needs of different operating conditions and achieve the matching of fans and systems. in order to achieve energy saving and noise reduction;

3、Lightweight, high-strength, and corrosion-resistant; The fan impeller can be made of different materials according to the corrosiveness of the working air medium, including ABS (engineering material), FRP (fiberglass reinforced plastic), and aluminum alloy sheet. For centrifugal fans with high pressure requirements and high fan speeds, the impeller surface is specially galvanized and sprayed with plastic for corrosion resistance, which not only reduces the overall weight of the machine but also has good corrosion resistance;

4. Smooth operation and long service life; the fan has small rotational inertia, high dynamic balance accuracy and smooth operation. The factory internal control standard requirements of various performance indicators are higher than the fan industry standard, which can ensure the long-term stable operation of the fan;

5, wide application: the fan can be used according to the requirements, manufacturing explosion-proof, flame retardant, suitable for anti-aging, pumping flammable and explosive and corrosive gas occasions;

6, beautiful appearance: the fan hood parts are made of glass fiber reinforced plastic, the appearance of imported gel coat resin film, surface transition soft, beautiful and generous, practical; can also be made according to user requirements into steel hood by galvanized plastic spray (PVC) processing;

7. Conditions of use: the medium temperature does not exceed 60'C, the gas is not allowed to contain excessive viscous substances, and the dust content is less than 100 mg/m. For occasions with high medium temperature, our company has high temperature fan technology to provide products.

8. This product has passed the inspection by Zhejiang Product Technical Supervision Institute. The inspection items include flame retardant/conductive performance/explosion-proof/wind resistance, etc., and are supervised by Shanghai Tongji University.

2. Model Structure Description

1, axial flow roof fan diameter from Φ 300-Φ 2400mm, a total of 17 kinds of machine number, centrifugal roof fan has Φ 300-Φ 1000mm nine kinds of machine number. Also according to user needs to provide other machine number of the fan;

2. Various types of fan mechanism can refer to the assembly drawing, which is composed of motor, impeller, air duct, air cap and other components. If users want to be equipped with loose-leaf dampers, bird-proof nets, safety nets, etc., please explain when ordering.

3. Fan transmission form: DWT-I type fan diameter ≤ 2200m adopts motor direct connection transmission, φ> 2200mm above fan adopts belt transmission form, and reducer transmission form can also be adopted according to customer requirements. There are three types of loose-leaf damper: gravity type, electric type and manual type.

4. The roof fan has a wide range of applications and a large number. According to the needs of the use, the structure is complicated. The company can carry out research and development according to different technical requirements, and transform the shape structure.