Vacuum pump repair factory: the reason of pump shaft damage -

function is to transfer power to the impeller of pump shaft, and through the bearing support in a location to the impeller. Do you know what is the main form of pump shaft damage? It is how cause? Aimed at these questions, the following vacuum pump repair factory to explain the cause of the damage of pump shaft and the method of maintenance, and at the same time, we organized the pump shaft inspection steps. I hope that through this article, everybody can know something about the breakdown of vacuum pump.

vacuum pump maintenance explained the cause of the damage of pump shaft manufacturer. A, shaft bending

shaft bending occurs mainly in the deep well pump and multistage pump, and the pump shaft diameter is relatively large.

: is the cause of pump shaft bending of rotor dynamic balance is too big, poor level of the rotor vibration and pumps. For horizontal multistage pump, this is mainly caused by the improper starting sagging prolapse, rotor caused by temperature difference between upper and lower parts of the rotor unbalance and excessive deformation and vibration caused by misalignment.

is the main way to solve the bending axis calibration, cold hot calibration, mixed calibration, etc. Wear

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local wear is usually caused by the axis of bending. In addition, the inner ring of the bearing looseness caused by wear or damage to bearing also occur in the bearing shaft diameter.

pump shaft inspection steps:

( 1) Surface inspection: use kerosene cleaning pump shaft, use sandpaper, and check whether there is surface grooves and wear.

( 2) Shaft bending check: for bending axis, the most convenient is high precision measurement on a lathe. Can also use rolling bearing stents or v-shaped iron is measured, but must ensure that the levelness of the shaft itself in the process of measuring and axial position, in order to prevent movement.

(1) to determine the shaft position measurement. Half coupling will be installed, bearing, impeller and other components as a measurement point.

2. Each measurement part of the pump shaft into a quarter or more homogeneous parts. (3) install dial indicator in measuring part. Indicator of measuring head should be perpendicular to the axis.

(4) along the slow axis of a circle, the same direction, in turn, each point measurement data and records.

(5) according to the deviation of each measuring section make a comprehensive analysis. Using the 180 ° differential pressure from the azimuth Angle between two symmetry half to map the corresponding shaft bending. For example, in 0 ° and 180 ° direction of the measured points Ⅰ straightness deviation is 0. 12.

6. Analysis of maximum bending position and direction.

the following specific introduction of pump shaft damage after maintenance methods:

1. Journal hook and wear after maintenance

vacuum water pump maintenance manufacturers recommend the use of sliding bearing pump shaft neck. Or poor lubrication in iron, sand and so on the introduction of lubricating oil will cause the pump shaft neck, scratches or wear rubber guide bearing on journal bearing can also wear. Usually, the use of copper and stainless steel plating for repair, then through turning or grinding should be processed into standard diameter.

2。 Repair the bending of water pump shaft

for smaller the diameter of the pump shaft, can put the copper on the elbow with a hammer straightening. For larger diameter and smaller pump shaft bending degree, you can use the screws for straightening corrector.

3。 Axis thread repair

pump shaft end thread damage for lighters, you can use a variety of file repair damage thread file, and then continue to use. If the injury is serious, please smaller pump shaft end, and then click the bushing, then turn the bushing on the screw thread; You can also use electric welding and gas welding will screw on the pump shaft end cover, then rotate the screw thread.

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