Vertical multistage centrifugal pump disassembly

Stainless steel multistage centrifugal pump parts generalization degree is high, the stainless steel multistage centrifugal pump impeller in the volute movement space than casting pump is large, can design into a wide export of two phase flow impeller, so the same vortex shell can be furnished with two sets of impeller, water in the three dimensional flow impeller, two phase flow with tsai impeller design two phase flow theory, not only ensure the design of the pump performance parameters of the table, and ensure efficiency and corrosion resistance of stainless steel multistage centrifugal pump.

Vertical multistage centrifugal pump overhaul methods:

1, down stainless steel multistage centrifugal pump inlet pipe and a fixed screw, from the water pump on the gear cover shell will be removed.
2, put stainless steel multistage centrifugal pump on vice, to fix the pump gear.Impeller back cap will be removed with specialized tools.
3, PaZi stainless steel multistage centrifugal pump impeller, pump impeller will be removed.The support plate when take down the 3 screws on both sides of the 4 set screw hole, screwing in the pump impeller rotating screw 2, make the top cone top five in the top of the water pump shaft, continue rotating screw, water pump impeller will be removed.
4, unscrew the pedestal and the bolt between pump body, remove the shaft frame and other parts.
5, remove the shaft hole of the outer end use, one end by the impeller of the pump shaft with press, together with the bearing pressure, remove the pump gear.
6, to remove the parts after washing clean, check the pump impeller, pump shell wall with and without corrosion phenomena, if severe corrosion, should replace a new one.
7, check the dynamic and static ring of water sealing surface wear, corrosion condition, spring rustily, rubber sheath is aging, damage, when it is necessary to replace a new one.Replace the water seal of method is: will ring and rubber bridge from the pump impeller hole pried.From the pump shell back to a static ring and static ring out together.Replace new water seal, dynamic and static ring should be cleaned up on a hole.And cooperate with the surface evenly coated with a layer of anaerobic adhesive.To press the ring together with the rubber seat into the impeller hole.Loads are strictly forbidden to knock, so as not to damage the ring.When install the static ring, in the first set of transmission surface besmear a few anaerobic adhesive, put the static ring set on the pump shell hole, and is, by using special tool pressure transmission set of outer peripheral, slowly sit down hole pressure.In the dynamic and static ring on the surface, apply a small amount of sealing grease.
8, all stainless steel multistage centrifugal pump parts cleaning after inspection qualified, according to the program to the contrary.
9 when, after loading, should check and adjust the matching surface of impeller clearance and on the back of the impeller clearance for 1-1.3 mm, can be shouldered by measuring the pump shaft to the deep hole wall height H1 and impeller seal H2, H1, H2 for the clearance value.The clearance can be adjusted by changing the thickness of the gasket 2.The pump impeller and the clearance between the inlet flange regulation 0.8 m – 1.0 mm, available feeler direct measurement.The clearance can be adjusted by changing the thickness of the sheet 1.
10, installed, toggle stainless steel multistage centrifugal pump impeller with the hand, should turn the light, without any scratches and block phenomenon.When conditional test bench tests its performance parameters.
Stainless steel multistage centrifugal pump is applicable to cold or hot clean, non flammable and explosive liquid, containing no solid particles or fibers, such as medicine, food, beverages, boiler water inlet, water pressurization, industrial environmental protection water treatment, life cycle system and processing system of media transmission.