Multistage centrifugal pump assembly and disassembly matters - should be paid attention to

multistage centrifugal pump is chosen the recommended application of high efficiency, environmental protection and energy saving hydroelectric power entity model has efficient environmental protection and energy saving, stable feature coverage, operational safety, low noise, long service life, convenient installation and maintenance and other advantages. Multistage centrifugal pump assembly sequence generally and disassembly sequence in turn, the assembly line quality immediately endanger the normal operation of the pump, and the use and technical parameters of the pump. Below we together to learn about the multistage centrifugal pump to common problems when the erection and dismantling of the assembly line, and the multistage centrifugal pump maintenance technical specification.

multistage centrifugal pump assembly line pay attention to the issue of

1, should maintain good parts processing precision and roughness of cutting is not allowed to have state such as injury, scratch, sealing with molybdenum disulfide to tidy, tighten bolts and anchor bolt should be supporting symmetry;

2 entrances and exits, centrifugal impeller runner and guide vane import port to neuter is in accordance with the various components of the radial specifications to ensure that, a port on the merits of the neutralization immediately endanger the characteristics of the pump, so the adjustment of the specifications of the multistage centrifugal pump can not be casually;

3, after the multistage centrifugal pump assembly line, in not before packing, forcibly rotating multistage centrifugal pump motor rotor, check the motor in the pump rotor is flexible, radial channeling angular momentum is up to requirement;

4, press it into packing, after inspection standard and pay attention to the relative position of packing ring in the packing chamber.

the multistage centrifugal pump disassembly sequence

1, unload multi-stage centrifugal pump shafts, turn on bearing screw cap on the anchor bolt, leaks and bearing body connection nut, remove the front bearing body;

2, turn on shaft round nut and successively remove bearing inner hole, bearing cap unscrewing peace washer;

3, use the central layer pad pad, unload the poles nut, remove slack period, and leaking on the filler cap unscrewing, packing ring, packing, etc. ;

4, successively in front of the centrifugal impeller, flat key, guide vane, is centrifugal impeller, level at the end of the guide vane, water yield, the throttle valve, relieve pressure equipment;

5 levels, has landed at the end of the anti-missile leaf, at the end of the centrifugal impeller, flat key, anti-missile leaf, after the centrifugal impeller, throttle valve, relieve pressure equipment, do pay attention to is, the centrifugal impeller, the orientation of the guide vane and order;

6, turn on secondary coil slack period, end cap in the middle of the nut, the spindle bearing, after end cap, bearing body components;

7, turn on end cap, bearing body in the middle of the nut, remove the tail cover packing screw cap, packing ring, packing, etc. ;

8, after turn on bearing screw cap on the anchor bolts, bearings, small round nut, bearing cover has unloaded;

9, using drag bearing water pump, the disassembly sequence, only when removing the bearing components are slightly different.

multistage centrifugal pump remove the advertent issues

1, parked in a parking sequence;

2, liquid in the water pump body ( Contains the cooling circulating water) Should be drained; Bearing component is flattering thin tender, comes off grease;

3, disconnect the hamper to remove the attached lines, such as balancing tube, exhaust valve tube pipe and wire;

4, should be strict maintenance removed parts manufacturing precision will not damage, remove the wear of rod and should use the central layer pad cushion, in case the central loose seam allowance down the shaft bending.

the installation of the multistage centrifugal pump common problems

1, the installation of pump use level ground leveling basic plan. After the basic concrete condensation, should check the base and anchor bolt hole is loose;

2, motor, multistage centrifugal pump and the base after assembling, should be strict check the pump shaft and motor shaft alignment, make sure the pivot line in the center of the same line;

3, motor and multistage centrifugal pump assembly, to ensure that the multistage centrifugal pump and motor shafts numerical 2 mm inner hole of the radial gap, this series of products pump without radial shaking;

4, multistage centrifugal pump is only for internal work itself, can not bear all the external force, so the multistage centrifugal pump inlet piping and pressure piping should be respectively support frame, to prevent the pump pressure.

5, to contain flammable inflammable and explosive gas of coal mining under the operation of the pump, be sure to use explosion-proof fan and regulations have relative level of waterproof and explosion-proof marks.

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