long shaft submerged pump maintenance to do? Long shaft submerged pump is installed and how to do? It is reported, long shaft submerged pump is suitable for containing particles, high viscosity, strong acid, strong alkali, salt, oxidant and other corrosive medium.

long shaft submerged pump maintenance

1, the long axis of the submerged pump maintenance

according to the technology of running state monitoring data of maintenance project, can also according to the periodic preventive inspection, the defective parts for repair or replacement.

2, long axis of the submerged pump maintenance

the collapse of the change of main components, should reach the big maintenance quality standards.

big project, the content and the quality of maintenance, shall meet the following requirements:

1) Remove scale, rust, the machined surface can be non-toxic water resistant anticorrosive coatings;

2) Cooling hole, pressure gauge hole, vent should be smooth;

3) Shell wall or guide blade erosion thickness more than 1/3, the original wall thickness should be repaired or replaced;

4) Shape and fit tolerance in accordance with the drawings technical requirements

5) Impeller after repair or switch to a new static balance test should be done when the impeller, the impeller diameter on the static balance of allowable deviation, in line with the current

6) Removal of static unbalance weight, must be kept smooth, uniform grinding, grinding biggest thickness is no more than 1/3 of the original cover plate thickness;

7) Closed impeller and shaft fit tolerance in accordance with the current national standard H8 / h7 cooperate in 'tolerance and fit the requirements;

8) Taper of half open impeller with conical sleeve should be consistent, contact area of not less than 60% of matching area;

9) Closed impeller sealing ring and the impeller with running clearance, single-stage double-suction centrifugal pump should comply with the provisions; Long axis deep well pump and Wells with submersible pump should comply with the rules. When wear is more than 50% of the provisions of clearance in the table above, a new seal ring should be replaced.

long shaft submerged pump installation

1, the long shaft submerged pump installed axial thrust under way:

1) , water pump driven by ordinary vertical machine, water pump rotor weight and axial thrust of thrust bearing upper installed in the pump.

2) Thrust bearing, water pump using belt of vertical motor drive, the weight of the pump rotor and axial thrust by thrust bearing in the motor.

3) , water pump using right Angle gear transmission, and the weight of the pump rotor axial thrust by thrust bearing in a right Angle gear box.

2, long shaft submerged pump installation of thrust bearing lubrication: thrust bearing with thin oil lubrication, Small pump grease lubrication) may be adopted 。 Bearing body can be set to external cooling jacket, with cooling water cooling oil temperature.

3, long shaft submerged pump installation guide bearing lubrication way: self-lubricating: if water pump transmission medium for the cleaning liquid, guide bearing medium can be directly used for lubrication. External water pressure lubrication: if the pump is conveying medium containing a small amount of impurities, then you need to come from external access to clean water pressure lubrication ( Pump, water pump with self-closing sealing system downtime, self-closing sealing system can prevent impurities from entering the guide bearing) 。

4, long shaft submerged pump installation method: general pump unit installed on the same base layer.

5, long shaft submerged pump outlet installation location: under normal circumstances, the outlet is located in the base layer, such as user needs can also be located in the base layer.