Causes and treatment of impeller scraping of Roots blower
2020-07-02
Summary
There are contaminated impurities on the impeller, causing the clearance to be too small; Remove dirt and check whether the internal parts are damaged; Gear wear causes large backlash; Adjust the gear clearance. If the backlash of the gear is greater than 30% ~ 50% of the average value, the gear shall be replaced. The gear is not firmly fixed and the impeller cannot be synchronized. Reassemble the gear to keep the taper matching contact area up to 75%. Wear the bearing and increase the clearance. Replace the bearing.
Impeller and impeller scraping
(1) There are contaminated impurities on the impeller, causing the gap to be too small; remove the dirt and check whether the internal parts are damaged;
(2) gear wear, resulting in large backlash; adjust the gear clearance, if the gear backlash is greater than the average value of 30% to 50% should be replaced gear;
(3) The gear is not firmly fixed and cannot keep the impeller synchronized; Reassemble the gear to keep the taper matching contact area up to 75%;
(4) bearing wear caused by clearance increase, replace the bearing.
Scratch the impeller and the casing and wall plate
(1) The installation gap is incorrect; readjust the gap;
(2) The operating pressure is too high and exceeds the specified value; Find out the cause of overload and reduce the pressure to the specified value;
(3) The operating temperature is too high; check the installation accuracy and reduce the pipeline tension;
(4) the casing or base deformation, fan positioning failure; recovery;
(5) The axial positioning of the bearing is poor, check and repair the bearing, and ensure the clearance.
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