How to deal with the vibration, heating and abnormal noise of Roots blower?

Roots blower is widely used, but there are also many problems in the process of use, such as vibration, heating and abnormal sound. How to deal with the vibration, heating and abnormal noise of Roots blower?

Treatment of vibration, heating and abnormal sound of Roots blower:

1. Solution to the center distance deviation of fan gear pair and the center distance deviation of gearbox shaft hole

Although the existence of this error has been verified through measurement and theoretical calculation, because the fitting deviation between the gear center distance of Roots blower, the parallelism error of gear axis, the center distance deviation of gear box shaft hole and the parallelism error of gear box shaft hole have been determined in the equipment manufacturing, the error cannot be adjusted in the maintenance. The only way to solve these errors is to replace the fan gear and impeller shaft, reduce or eliminate the gear backlash, which can eliminate such failures.

2. Methods for fan vibration caused by improper adjustment of bearing axial clearance and wear of bearing pedestal

First, check the wear of bearing rollers and ballistics, and then measure the clearance of rolling bearings to see if there is poor axial positioning of bearings. Usually, adjust the axial clearance by adding or subtracting lead pads on the bearing end caps. If they are all within the standard value range, take down the bearing to check whether the bearing has run out of the outer ring. If there is wear trace in the bearing chamber, use epoxy resin, a certain amount of phthalic acid, ethylene diamine for bonding and fixation, so that this kind of fault can be eliminated.

3. The method of adjusting the clearance between the impeller, wallboard and casing by adjusting the position of the driven gear locating pin

The driven gear is composed of a gear ring and a gear hub. The locating pin on the driven gear is designed to adjust the clearance. When overhauling Roots blower, do not fix the locating pin between the gear ring of driven gear and the gear hub before installing the gear pair, and install the driven gear into the blower first.

At this time, the driving gear and driven gear are manually turned through the coupling to adjust the clearance between the gear pair and the impeller. After the clearance is adjusted, fasten the lock bolt between the gear ring of the driven gear and the gear hub, remove it from the equipment as a whole, and re select the location of the positioning hole. The positioning hole obtained at this time is the current accurate positioning size of the fan. After installation, tilt the two impellers by 45 °, align the driven gear with the driving gear and press it onto the shaft, and then install the gear retainer ring, gear washer and lock nut in turn. Turn the gear. If it cannot rotate, rotate the impeller and adjust the position of the gear until it rotates flexibly without scratching or dead point.

The above is the introduction to the treatment of vibration, heating and abnormal noise of Roots blower. If you have any problems when using Roots blower, you can consult us, and we will provide you with corresponding help.