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Common faults of Roots blower and their solutions

Source: Roots blower manufacturer Published on: February 28, 2022 Hits:

Roots blower The impeller is the most important during operation. However, due to long-term use, a series of operation failures or abnormal operation may occur due to damage or pollution. The following small editor will take you to understand the common faults of the impeller and their solutions.

1、 Friction between impellers

1. There are impurities on the impeller, resulting in too small clearance;

2. The gear is worn, resulting in large backlash;

3. The gear is not firmly fixed. The impeller cannot be kept synchronized;

4. The bearing wear causes the clearance to increase.

Solution:

1. Remove the dirt and check whether the internals are damaged;

2. Adjust the gear clearance. If the gear backlash is greater 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;

Common faults of Roots blower and their solutions (Figure 1)

2、 Impeller and wallboard, impeller top and casing problems

1. The installation clearance is incorrect;

2. The operating pressure is too high, exceeding the specified value;

3. The operating temperature is too high;

4. The casing or base is deformed, and the fan positioning is invalid;

5. The axial positioning of the bearing is poor.

Solution:

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.

3、 Stop immediately due to abnormal vibration and noise

Frequently asked questions:

1. The clearance of rolling bearing exceeds the specified value or the bearing seat is worn;

2. The gear backlash is too large, misaligned, and not tightly fixed;

3. Impact between impellers, impellers and casing caused by foreign objects and dust;

4. Impeller collision caused by overload and shaft deformation;

5. Friction between impeller and casing inlet due to overheating;

6. The impeller loses balance due to scale or foreign matters;

7. Anchor bolts and other fasteners are loose.

Solution:

1. Replace the bearing or bearing seat;

2. Reassemble the gear and ensure the backlash;

3. Clean the blower and check whether the casing is damaged;

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

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

6. Clean the impeller and casing to ensure the working clearance of the impeller;

7. Tighten the foundation bolts and level the base.

The above is the common fault of Roots blower and its solutions. I hope it will be helpful to everyone.

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Common faults of Roots blower and their solutions

Source: Roots blower manufacturer Published on: February 28, 2022 Hits:

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