Pay attention to the requirements when installing the oil fume purifier and fan

When installing the lampblack purifier, it is necessary to use the model that matches the lampblack purifier, otherwise there may be hidden dangers of poor kitchen exhaust and poor purification effect. From the smoke hood to the exhaust, the best installation sequence is to install the fume purification equipment first, and then install the wind cabinet. After the oil fume purifier is installed, the disassembly, cleaning and assembly of the centrifugal fan should meet the following requirements：

 First, disassemble the housing and bearing box and remove the rotor for cleaning, but the fan with direct motor transmission can not be disassembled for cleaning; Cleaning and checking the adjusting mechanism, its rotation should be flexible. The cooling water pipe of the bearing should be smooth and the pressure test should be carried out on the whole system, and the test pressure should not be less than 4 kg force/cm 2 if the technical document of the equipment is not specified.

 Second, the installation of the whole unit should be placed directly on the foundation with a pair of inclined pad iron leveling. The cutting surface on the base of the unit assembled in the field should be properly protected and should not be rusted or operated. When the base is placed on the foundation, a pair of inclined pad iron should be levelled. The bearing seat and the base should be closely engaged, the longitudinal non-levelness should not exceed 0.2/1000, measured with a level on the spindle, the transverse non-levelness bottom should not exceed 0.3/1000, measured with a level in the horizontal middle plane of the bearing seat. Before scraping the bearing bush, the rotor axis line and the housing axis line should be corrected first, and the clearance between the impeller and the air intake port and the clearance between the spindle and the rear side plate of the housing should be adjusted to make it conform to the provisions of the equipment technical documents.For the fan assembled with rolling bearings, the different coaxiality of the bearing holes on the two bearing frames can be subject to flexible rotation after the rotor is installed. When assembling the shell, the rotor axis line should be used as the reference to locate the position of the shell, and the axial and radial clearance between the impeller air inlet and the shell air inlet should be high speed to the range specified in the equipment technical documents, while checking whether the anchor bolts are tightened. If the clearance value is not specified in the equipment technical document, the general axial clearance should be 1/100 of the outer diameter of the impeller, and the radial clearance should be evenly distributed, and its value should be 1.5/1000 ~ 3/1000 of the outer diameter of the impeller (the smaller the outer diameter is the larger value). When adjusting, strive to reduce the gap value to improve the efficiency of the fan.When the centrifugal fan is timing, the different coaxiality of the fan shaft and the motor shaft: the radial positioning shift should not exceed 0.05 mm, and the tilt should not exceed 0.2/1000. When assembling the spindle and bearing shell, it should be checked according to the technical documents of the equipment. The interference between the bearing cover and the bearing bush should be maintained by 0.03 ~ 0.04 mm (measuring the outer diameter of the bearing bush and the inner diameter of the bearing seat).