Repair method of gear pump and other components

Maintenance method of gear pump and other components:

1, active shaft and bushing wear repair

Gear pump driving shaft and bushing wear, the gap increases, will affect the oil pump. In this method, can be used to repair the shafthub to restore the normal clearance. If the shaft wear bushing slightly, just press the old bushing replaced after the standard size, with the gap can be restored to the permissible range. If the drive shaft and bushing wear and clearance severely exceed the standard, not only to replace the bushing, and the driving shaft is also the application of chrome or vibration welding method will increase its diameter and then grinding to a standard size, recovery and bushing with the requirements.

Repair cracks in the shell 2, lubrication oil pump shell repair

Shell crack available 508 cast nickel copper electrode welding. The weld shall be closely and Yuan hole, combined with surface flatness error is not greater than 0.05 mm with the pump cover.

3, active shaft bushing hole and driven shaft hole wear repair

Active shaft bushing hole wear after reaming method can be used to remove traces of wear, and then matched with a corresponding increase to the size of bush. Wear also driven shaft hole reaming method to remove traces of wear, and then according to the actual size after reaming hole with the driven shaft

Repair 4, shell pump cavity

Shell pump cavity after wear, the general cavity insert method to repair, the inner lining after large inlaid with cast iron or steel bushing. Set, will seat 5, inner lining repair: the pressure limiting valve with ball valve and piston valve two. After the ball valve seat wear can be a ball on the seat, and then gently tapping the ball with metal rods until the valve and valve seat seal up. If the valve seat wear, can first reaming removing grinding, and then on the law to close. The plunger type valve seat wear, can put a few valve sand grinding, until closed.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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