1120D

The dimensionless performance table and curve of Prototype No. 10. Calculate the dimensional performance of fan No.10 or above based on the provided dimensionless performance table or curve. When the reserve coefficient of the motor is in a non-standard state, convert the performance of the non-standard state to the performance of the standard state, and then select the fan based on the conversion performance. The conversion formula is as follows: Q0/Q=n0/n?? (m3/h)P0/P=(n0/n)2（ρ0/ρ）(Kp/Kp0)?? (Pa)Nin0/Nin=(n0/n)2（ρ0/ρ）??? (kw) η in0=η in, where: η in - internal power n - rotational speed (r/min)

Before installation: A comprehensive inspection of all components of the fan should be carried out to ensure that the parts are complete, the rotation direction of the impeller and the casing is consistent, and the connections between each part are tight. Whether the main components such as impeller, main shaft, bearings are damaged, and whether the transmission system is flexible. During installation: Pay attention to checking the casing, and there should be no tools or debris falling into the casing. To prevent rust and reduce disassembly difficulties on some joint surfaces, a layer of lubricating grease or mechanical oil should be applied. The fan is fully connected to the foundation structure, and the inlet and outlet air ducts should be adjusted to fit naturally. Forced connections are not allowed, and the weight of the ducts should not be added to the various components of the fan. Attention should be paid to the horizontal position of the fan. Installation requirements: (1) Install according to the position and size shown. To ensure accuracy, special attention should be paid to the axial and radial clearance dimensions between the inlet and outlet and the impeller. (2) After installation, test the transmission assembly and check for any tightness or collision with the fixed parts. (3) After all installations are completed and the overall inspection is qualified, the fan can be put into trial operation. To prevent motor overload and burnout, when starting the fan, * * should be carried out with no load (close the inlet valve and slightly open the outlet valve). If the situation is good, gradually open the valve until the specified working conditions are met. During operation, the current should be strictly controlled and not exceed the rated value.

Models 8-09 and 9-12 fans can not only be used as blast furnace blowers, but also as fans for various furnaces and forging furnaces. They are also suitable for conveying air and gases that are non corrosive, unnatural, and do not contain viscous objects. They can also be used for material transportation. The medium temperature is 80 ° C.
The 8-09 type fan has three machine numbers: 7.1D, 8D, and 9D, while the 9-12 type fan has two machine numbers: 8D and 9D. Both are single suction, clockwise or counterclockwise rotating, D-type transmission, and integral structure. Compared with other types of fans, the fan not only has impellers, casings, air inlets, and transmission groups, but also seals and integral bases to prevent internal leakage. The integral base enables the fan to be assembled as a whole. Users can use anchor bolts to fix the base to the ground according to their usage, or install elastic shock absorbers under the base and place it directly on ordinary cement ground without the need for a special foundation for the fan and motor.

High pressure centrifugal fans have * *, low noise, and a flat performance curve in the high-pressure small flow range
The characteristics of wide area and wide flow range for safe operation have improved the operating characteristics of the fan, and the structural dimensions are relatively large
Small. It is a blast furnace fan suitable for blast furnaces with melting rates of 1, 2, 3, 5, and 7T/h. In * Charge
Under the premise of high furnace rate and molten iron quality, compared with Roots blower, it has a significant energy-saving effect and reduces noise
Sound facilitates equipment installation, reduces equipment costs, and facilitates maintenance.