Faults caused by oil leakage of Roots blower and solutions (detailed introduction)

Fault 1: Friction between Roots blower impellers

If there are impurities on the impeller, the clearance will be too small; Then gear wear will cause large backlash; If the gear is not firmly fixed, the impeller cannot be kept synchronized, which will cause bearing wear and increase the clearance.

Solutions to the friction of Roots blower impeller

① First, remove the dirt and check whether the internals of Roots blower are damaged;

② Then adjust the gear clearance. If the gear clearance is more than 30%~50% of the average value, replace the gear;

③ Reassemble the gear and keep the taper fit contact area up to 75%;

④ Replace the bearing; 2 Impeller and wallboard, impeller top and casing;

Fault 2: Roots Blower Operating pressure too high

If the installation clearance of Roots blower is incorrect, the operating pressure will be too high, and then exceed the specified value, then the high operating temperature will lead to the deformation of the casing or base, which will lead to the positioning failure of the blower, resulting in poor axial positioning of the bearing.

Solution to high operating pressure of Roots blower:

① Readjust the clearance;

② Find out the cause of overload and reduce the pressure to the specified value;

③ Check the installation accuracy and reduce the pipeline tension;

④ Check and repair the bearing and ensure the clearance.

Fault 3: Roots blower temperature is too high

If the oil in the oil tank is too much, too thick, or too dirty, it will cause the filter or blockage, when the pressure is higher than the specified value; The impeller will be excessively worn, resulting in large clearance

If the ventilation is not good, high indoor temperature will cause high inlet temperature; If the running speed is too low, the belt will slip.

Solution to high temperature of Roots blower:

① Lower the oil level or carry oil;

② Remove the blockage; Reduce the pressure difference through the blower;

③ Repair clearance; Open vents to reduce room temperature;

④ Increase the rotating speed to prevent the belt from slipping.

Fault 4: insufficient flow of Roots blower

The inlet filter will be blocked, and then the impeller will be worn, which will lead to too much gap increase. In addition, the belt will slip, which will lead to large pressure loss at the inlet, and then the pipeline will cause ventilation leakage.

Solution for insufficient flow of Roots blower:

① First remove the dust and blockage of the filter

② Repair clearance

③ Tighten the belt and increase the number of belts; Adjust the inlet pressure to the specified value

④ Check and repair pipes regularly.

Fault 5: Roots blower leaks oil or oil leaks into the casing

If the oil tank level is too high, it will leak out from the oil drain; If the seal is worn, the shaft end will leak oil, so the pressure is higher than the specified value, which will lead to the blockage of the wall panel and the oil tank vent, and then the oil will leak into the casing.

Solution for oil leakage or oil leakage to the casing of Roots blower:

① Lower the oil level;

② Replace the seal;

③ Dredge the vent, install a cock with 2mm aperture in the middle chamber, and open the cock under the wallboard;

Fault 6: Roots blower stops immediately due to abnormal vibration and noise

If the clearance of the rolling bearing exceeds the specified value or the bearing seat is worn, the gear backlash will be too large, misaligned, and thus not tightly fixed; Due to foreign objects and dust

Impact between impeller and impeller, impeller and casing; Impeller collision due to overload and shaft deformation; Friction between impeller and casing inlet due to overheating;

The impeller loses balance due to scale or foreign matters; Anchor bolts and other fasteners will also become loose.

Treatment measures for abnormal vibration and noise of Roots blower:

① Replace the bearing or bearing seat; Reassemble the gear and ensure the backlash;

② Clean roots blower and check whether the casing is damaged;

③ Check the back pressure, check whether the impeller is aligned, and adjust the clearance;

④ Check the filter and back pressure, and increase the clearance between the impeller and the casing inlet;

⑤ Clean the impeller and casing to ensure the working clearance of the impeller;

⑥ Tighten the foundation bolts and level the base.

Fault 7: Roots blower motor overload

If the pressure difference is large compared with the specified pressure, that is, the back pressure or inlet pressure is high; Compared with the flow required by the equipment, if the flow of the fan is too large, the pressure will increase; The inlet filter is blocked. If the outlet pipe is blocked or blocked, the oil level is too high if the rotating parts collide and rub (get stuck); Narrow V-belt is overheated and vibrates excessively, and the pulley will be too small.

Troubleshooting for overload of Roots blower motor:

① Reduce the pressure to the specified value; Put the excess gas into the atmosphere or reduce the blower speed;

② Remove obstacles; Stop the machine immediately and check the cause;

③ Adjust the oil level to the correct position; Check the belt tension and replace it with a large diameter pulley;

The above is the fault and solution of Roots blower oil leakage. I hope it can help you! If you want to know more about it, please consult customer service online and give you the most professional answer: 0531-83663588