Single screw pump should be how to maintain

how to maintain the single screw pump

single screw water pump the elastic stator with special helical surface mold cavity and the rotor with big lead big depth of tooth mesh, constitute a string in the stator improperness seal line dividing of suction chamber and pressure chamber, rotor rotating cavity in succession to the discharge direction, when the materials are constantly suction and discharge.

1, single screw pump violent oscillation: perhaps electric rotor imbalance, or coupling with bad, bearing wear twists and turns; May also turn loose parts, break. Can be adjusted respectively adopted, such as repair, reinforcement, replace the way to deal with.

2. Packing: overheating by too tight packing pressure, cooling water in less than filler, or damaged shaft appearance. Can adopt appropriate relax clear packing, sealing tube jam, etc. Must replace the new packing wear. Before the device within the oil permeability, by loading, incision to stagger, which can reduce leakage.

3, water or air pipeline: perhaps device when the nut is not tight. If leakage is not serious, but in a flat or leaking alter cement or asphalt mixing the slurry oil.

screw pump suction air failure treatment method

device of screw pump bearing is apart from the oil level is too high, especially in the water pump speed to reduce, because cannot guarantee oil water pump suction cavity is necessary to form the vacuum degree of lack of oil absorption and inhalation of air. At this time should be adjusted with the relative height of oil pump, make it meet the requirements of regulations.

inhaled air is a common failure of screw pump, the following is the solution to eliminate inhaled air failure:

1, the gear oil pump device from bearing oil level is too high, especially in the pump speed to reduce, because cannot guarantee oil pump suction cavity is necessary to form the vacuum degree of lack of oil absorption and inhalation of air.

2, when the pump body and pump cover the requirements of the flatness of less than, can grinding on surface grinding machine, and need to make sure that the plane and hole of the vertical degree requirements.

3, in the amount of oil in the tank, or suction pipe mouth is not below the oil level, the pump will be sucked in air, this time should be added to the tank oil to oil line, pipe mouth in general should be inserted below the oil level.

4, screw pump is generally selected to the pump shaft seal skeleton oil seal type. If card tight lips spring fall off, or oil seal is installed inside, or the labial ministry is strain, aging, will be made after the oil seal and inhaled air side is often in a negative pressure condition, can generally be dealt with to replace the new oil seal.

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