★ Overview

8-09,9-12 pressure centrifugal fan with the melting rate of 1,2,3,5,7 t / h cupola supporting the dedicated fan can also be used as a variety of furnaces , blast Forge purposes in other industries conveying air and not spontaneous , non-sticky material gases are also widely used.

The company introduced a new 8-09,9-12 pressure centrifugal fan , its aerodynamic performance is consistent with the original machine , assembly type and body structure has greatly improved in appearance , strength, range of applications , and other aspects to improve .

★ Type and Structure

A machine number

1.1 8-09 have 6.8,7.1,8,8.5,9 five machine number ;

1.2 9-12 have 6.8,7.1,7.4,7.7,8,9 six machine number . ( Machine numbers multiplied by 100 equals the effective diameter of the impeller , in mm)

2 Transmission

All gauges are two kinds of A -type and transmission mode

A formula - Direct drive motor

D -type - motor via a coupling, transmission bearing housing

3 assembly type

3.1 fan can be made L (N) and D (S) two kinds of rotation type, direction from the motor , impeller counterclockwise (N) spin left-handed ; impeller clockwise (S) is right-handed .

3.2 the fan outlet in a horizontal position as a reference point , can be made 0 °, 45 °, 90 ° 135 °, 180 °, 225 °, 270 ° seven kinds of patterns.

3.3 Whether A type or D type , fans are installed in all parts of the whole rack above the bottom of the rack is equipped with shock absorber soft contact with the ground , without a dedicated fan base .

Four major structural components

4.1 Impeller - by fans new and efficient theoretical design forward by the blades, front disc , rear disc and shaft plate welding composition, wherein the shaft plate adopts the international advanced drogue coupling mechanism , so that the impeller assembly and disassembly is extremely simple and fast. Impeller material can be selected according to the requirements of different high-quality carbon steel or corrosion-resistant stainless steel . After molding machines with advanced balance static and dynamic balance calibration, so smooth and reliable operation .

   4.2 chassis ( including the front cover ) - a prototype based on the addition of a ring -shaped and radial ribs group so that positive and negative pressure bearing stiffness and greatly improve the performance of their material also can be selected according to the requirements of different high-quality carbon steel or corrosion-resistant stainless steel .

   4.3 transmission mechanism ( only D -type ) - from the spindle , bearings, bearing housings , couplings and other components. Normal medium can be ordinary bearing housings , high temperature water cooling medium should be used bearing housing .

★ installation , commissioning and maintenance

   1 check - should be checked before installation whether there are internal debris blower , if so, to be clear ; steers the impeller, if there is virtually scratch phenomenon , found inadequacies must be timely adjustments intact.

   2 Foundation - thickness not less than 300mm concrete floor surface basic level, plus put on the rack around and not less than 300mm above the surrounding floor about 100mm ( waterproof ) .

   3 duct connection - Fan flexible import and export shall be provided over and setting up a regulator valve ( at least one must be set ) , and then be connected with the duct system .

   4 Commissioning - damper shall be closed before running the blower at no load condition starts to reach normal operating speed can be gradually open the valve until the rated condition. During operation should be strictly monitored current must not exceed rating. D fan running after 20 minutes should check the bearing housing temperature is normal ( temperature rise shall not exceed the ambient temperature 40 ℃, surface temperature should not exceed 70 ℃).

   5 Maintenance - fan maintenance must first shut down power ; according to the actual situation in due course replace the lubricant ( oil or grease ) ; increased vibration occurs when the fan , bearing temperature is too high , the motor current is too large body of overheating are not normal circumstances , should promptly identify the reasons for troubleshooting before running again.



★ 8-09 high pressure centrifugal fan performance tables

★ 9-12 high pressure centrifugal fan performance tables