Roots vacuum pump bearing

Treatment method of bearing deformation of Roots vacuum pump and daily bearing inspection

Bearing as an important part of Roots vacuum pump equipment, with the increase of service time, the burden and wear of parts will continue to increase, there will be deformation. Once the deformation occurs, the bearing will lose the effect of supporting mechanical rotation, so that roots pump can not be used normally. The bearing of Roots vacuum pump is the key to support the normal operation of the whole equipment, which affects the normal use of the equipment.

Today, we will explain the treatment method of Roots vacuum pump bearing deformation and daily bearing inspection.

1. The deformation of the bearing hole of Roots vacuum pump was measured.

2. Process the closed roots vacuum pump to the theoretical size.

3. After the upper and lower boxes of the unit are buckled together, the actual bearing holes are oval long holes with the long axis equal to the theoretical hole diameter, while the horizontal hole diameter is slightly smaller than the theoretical hole diameter.

4. According to the deformation of the long axis T, the thickness of T value is removed from the upper and lower surfaces of the unit.

5. Machine other bearing positions to theoretical dimensions.

6. After machining, the bolt hole of bearing cover will be dislocated with the bolt hole of box. The bearing cover can be reamed or the bearing hole of the box body can be re manufactured after mapping.

Therefore, when the bearing deformation of Roots vacuum pump is found, it is not allowed to continue to use. If the roots pump is in use, it should be shut down in time, and then it can be handled according to the above-mentioned method.

Therefore, the daily bearing inspection is also essential.

Inspection steps of pump shaft:

1. Surface inspection: clean the pump shaft with kerosene, polish with sandpaper, and check whether there are grooves and wear on the surface.

2. The rolling bearing bracket or V-shaped iron bracket shall be measured, but the levelness and axial position of the shaft must be ensured during the measurement to prevent movement.

3. Determine the measurement position of the shaft. Take the installed coupling half, bearing, impeller and other parts as measuring points.

4. Divide each measuring part of pump shaft into one quarter or more uniform parts. Install the dial indicator in the measuring section. The measuring head of the indicator shall be perpendicular to the axis.

5. Slowly rotate the axis one circle in the same direction, measure and record the data of each point in turn.

6. Make comprehensive analysis according to the deviation value of each measurement section. One half of the beat difference between the two azimuths of 180 ° symmetry is used to draw the corresponding axial bending diagram. For example, the straightness deviation in the direction of 0 ° and 180 ° of the measuring point is 0.12.

7. Analyze the maximum bending position and direction.

When the bearing or vacuum pump is abnormal, it is recommended that it should not be operated alone to avoid more serious damage if it is not professional and has poor operation ability. Professionals can be sought for repair, which is safer and more reliable.