How to better solve the Roots fan clearance problem
Roots FansIn the process of using the gap between the parts, then for such a gap should be how to solve it? On this issue Roots fan editorial take you to understand.
1. Adjustment of the clearance of the housing: guaranteed by the positioning pin holes in the housing and wall panels, as the positioning pin holes must not be damaged when dismantling the fan. Impeller chassis 0.20-0.395;
2. Adjust the impeller-impeller clearance: turn the impeller to the position shown in the clearance schematic, press the driven gear to the mark of the driven gear, then press it on the shaft, install the gear ring, stop the washer and lock Tighten the nuts in turn and lock the lock. Tighten the nut slightly. Rotate the impeller one turn. If it does not rotate, turn the impeller to make contact with its upper part. Adjust the impeller clearance by lightly tapping the clearance portion of the impeller with a brass rod to move the gear and cone relative to each other. When the impeller-impeller clearance reaches the specified value, lock the gear impeller-impeller 0.29-0.34
3. Adjustment of impeller-wall plate axial clearance: When assembling the wall plate, the total axial clearance CD should be ensured first (adjust the thickness of the housing gasket), and then the axial position of the impeller can be adjusted by the four sets of adjustment Screws for adjustment on the front wall plate should be installed to ensure that the gap between the two ends of the gap C and D are evenly distributed. Impeller front wall plate 0.12-0.18 Impeller rear wall plate 0.63-0.69 When tightening the adjusting screws, the pressure plate bolts should be loosened, otherwise the adjusting screws will be damaged.
