The common parts troubleshooting methods sections of multi-stage pump

Sections of multistage pump is a function of the pump, but in the process of using this sections of multistage pump will often appear some fault, such as parts of some common failures, know exactly what causes and its processing method, will make better use process.

1, sections of multistage centrifugal pump balance device failure and treatment method of

balance disc and balance ring wear too much, Generally more than 2 mm) Methods or not normally, the first wear grooves flat car, behind the gimbal ring gasket to compensate for reducing thickness. The gasket must be smooth uniform, wear too much should be replaced.

2, sections of multistage pump with the impeller mouth ring faults and treatment method of

water pump impeller blades due to cavitation or inhaled solid impurities damage, mouth ring wear too big has been irreparable, it should be replaced the impeller; If only the impeller mouth ring with a little wear and tear, repair can be performed. Method is to use the impeller core shaft to wear flat on lathes impeller mouth ring groove, and then based on the size of the impeller mouth ring place small car back, determine the inner diameter of the ring size. The clearance between the ring and the impeller mouth ring to seal ring diameter, generally take a 0. 3 to 0. 5 mm, sealing ring diameter size remains the same.

3, sections of multistage pump shaft sealing device failure and the solution:

1) Packing must be replaced when repair water pump, cleaning check other parts.

       ( 2) Shaft sleeve is a packing grinding groove, should be replaced or turning repair after welding repair.

       ( 3) Installing a packing ring must be on the water seal hole, lest be chocked up with packing, make water seal.

4, vertical sections of multistage pump pump shaft failure and treatment method of

is the core of the rotor pump shaft parts, it is equipped with impeller, shaft sleeve, the high-speed rotation in the water pump body.

pump shaft as long as it doesn't produce cracks and serious surface wear or bending, all can be used to repair. Shaft bending amount must not exceed 0. 6 mm, greater than this value should be alignment, it is better to screw press is not heating straightening.

5, sections of multistage pump rotor axial channeling momentum failure and treatment method of

pump export of guide vane and the impeller entrance is very important for neutral, affect the performance of the pump. Check method is to check after the final assembly rotor momentum, total 6 ~ 10 pump up momentum should be 1. 0 ~ 2. 0 mm, if the axial momentum large, to allow the balance disc and balance between ring and a smooth surface, uniform thickness adjustment pad.

6, sections of multistage pump body bearing fault and the solution

bearing body generally will not damage, but in case of improper or poor gear grinding is very big, use boring machine first bearing hole boring ( To ensure that the concentricity) And then set set, the outside diameter of the bearing hole set of suitable, inner diameter and bearing outside diameter.

7, violent vibration or noise

in the process of using stainless steel sections of multistage pump, is likely to be violent vibration or noise, such as all kinds of problems, in this case, if you want to repair this fault, then it must be first to know about the cause of it, the reason will appear this kind of circumstance, usually because of multistage pump installation is firm, or are not caused by the installation in the correct position, on the other hand if the multistage pump motor ball bearing damage, so there may be some noise, in the face of such failure, then at the time of repair, must deepen the pump by using the method of appropriate, at the same time should also try to lower the installation height of the pump, if because of motor bearing damage caused by, so must be timely replacement motor ball bearings at this time, it can timely solve the problem.

8, the shaft or motor bearing overheating

this is also the process of using multistage water pump will often appear some fault, the reason will appear this kind of circumstance, there is a very important reason, because of excessive oil consumption in the process of using multiple machine function caused by the amount of lubricating oil is too little, in this case could produce a great friction, resulting in the shaft or motor bearing overheating, on the other hand if the bearing fracture may also lead to this problem, so in the face of such failure, at the time of repair multistage pump, will add some lubricating oil, or in the case of broken bearing replacement bearing, if in the case of motor bearing overheating or drive shaft overheating still continue to use, then in this case is likely to lead to all kinds of spare parts damaged, so they will have extremely serious consequences.

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