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Maintenance

To make the slurry pump safe operation, we must pay attention to the daily maintenance, maintenance should pay attention to several aspects

Maintenance of shaft sealing

For a packed gland seal pump the water pressure and water volume of flush seal water should be checked regularly. Make sure that there is always some clean water passing around the shaft. Adjust the gland assembly regularly. check the stuffing regularly and replace the stuffing if necessary. The pressure and flow rate of the sealing water should meet the standards stated. The expeller seal pump with grease cups should be filled with grease regularly to lubricate the internal packing

Adjusting the impeller

In order to ensure the efficient operation of the pump, the gap between the throat bush and the impeller should be adjusted regularly. The distance between the impeller and the throat bush should be kept at 0.5-1 mm in the metal liner pump. The gap between the impeller and liners should be kept the same in the rubber liner pump. To adjust the gap between liners and impeller, shut down the pump first. Lose the bolt which presses the bearing assembly tight. Tighten the nut on the adjusting screw to move the bearing assembly forward. At the same time, use hands to turn the shaft in the direction of the pump until the impeller and throat bush are next to each other. For metal liner pumps, loose the just tightened nuts half a circle and tighten backward. The gap between the impeller and throat bush is 0.5-1 mm. For rubber liner pumps, tighten the nut on the adjusting screw to move the bearing assembly forward, so that the impeller just touches the cover plate liner. Then move the bearing assembly backward until the impeller touches the frame plate liner insert. Measure the distance that the bearing assembly has been moved. Take half of this distance as the gap between impeller and cover plate liner and impeller and frame plate liner. Adjust the position of bearing assembly using an adjusting Screw to make sure that the gap between impeller and front and back liners are of the appropriate amount. After adjustment check, if the impeller operates correctly before starting the operation again.

Lubrication of the bearing

The service life of the slurry pump will be longer if the bearing assembly is correctly assembled. the lubricant is of the right amount and the slurry pump is regularly maintained.
Maintenance staff should check the bearing assembly and the amount of lubricant regularly. Usually, the pump should be maintained at least every 2 months. When the pump is in operation, lubricant should be added regularly. The frequency and amount of which depends on the speed of revolution, type of bearing, continuous work time, the number of times that the pump is shut down, ambient, temperature, etc.

Others

The Pump that has not been used for a long time should be turned a quarter of a revolution every week to make sure that every part of the bearing evenly withstands the static load and external vibration.

The Frame Plate and Frame are used for a long time and the tensile strength is reduced. Check and replace them in time