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ZFB series stainless steel self-priming pump
Brief description: ZFB series pumps are horizontal self-priming centrifugal pumps. Compared with other types of self-priming centrifugal pumps, this t
Product details
1、 Product Overview:
The ZFB pump is more effective as an emergency pump in industrial and agricultural production, emergency rescue, such as drainage and firefighting. The ZX type pump is widely used for urban water supply in industrial sectors such as petroleum, chemical, metallurgical, mechanical, chemical fiber, food, energy, transportation, and can also be used for agricultural irrigation and sprinkler irrigation. For conveying clean water or viscosity less than 5 ° E, temperature below
2、 Product Usage:
Suitable for urban environmental protection, construction, fire protection, chemical, pharmaceutical, dye printing and dyeing, brewing, electricity, electroplating, papermaking, petroleum, mining, equipment cooling, oil tanker unloading, etc.
Suitable for clear water, seawater, chemical media liquids with acid and alkalinity, and slurries with general paste (medium viscosity ≤ 100 cP, solid content up to 30% or less).
Equipped with a rocker nozzle, the water can be washed into the air and dispersed into small raindrops for spray. It is a good machine for pesticides, nurseries, orchards and tea gardens.
It can be used in conjunction with any type and specification of filter press, and is an ideal pump for feeding slurry to the filter press for pressure filtration.
3、 Technical parameters:
Flow rate: 6.3-400m3/h;
Lift: 5-132m;
Speed: 2900, 1450r/min;
Power: 0.55~110KW;
Imported diameter: 50-200mm;
Work pressure: 1.6Mpa.
5、 Maintenance and disassembly
The characteristic of this pump is its simple and reliable structure, as well as its durability. Under normal circumstances, the pump generally does not require frequent disassembly and maintenance. Once a malfunction is detected, it can be resolved at any time.
When maintaining the pump, several main parts should be noted:
a. Rolling bearings: When the bearings wear out to a certain extent after long-term operation of the pump, they must be replaced.
b. Front sealing ring and rear sealing ring: When the sealing ring is worn to a certain extent, it needs to be replaced.
c. Mechanical seal: Mechanical seals should generally not be disassembled for inspection without leakage. If there is a serious leakage at the leakage port at the lower end of the bearing body, the mechanical seal should be disassembled and inspected. When installing and dismantling mechanical seals, they must be handled with care, paying attention to the cleanliness of the mating surfaces, protecting the mirror surfaces of the stationary and moving rings, and strictly prohibiting knocking and collision. The main reason for leakage caused by mechanical sealing is due to the rubbing of the mirror surface. The repair method can be to grind the friction surface to restore the mirror finish. Another reason for mechanical seal leakage is improper installation or deformation and aging of the "O" - shaped rubber seal ring (or buffer pad). At this point, it is necessary to adjust or replace the "O '- shaped sealing ring for reassembly.
2. Pump disassembly sequence:
a. Remove the motor or disconnect the coupling.
b. Remove the bearing assembly, check the radial clearance between the impeller and the front ring, and check if the impeller nut is loose.
c. Remove the impeller nut, pull out the impeller, and check the radial clearance between the impeller and the rear sealing ring.
d. Loosen the fastening pin of the mechanical seal, pull out the dynamic ring part of the mechanical seal, check the fit between the dynamic and static ring end faces, and check the sealing condition of the "O" ring (or buffer pad).
e. Unscrew the fastening nut of the coupling and pull out the coupling.
f. Remove the bearing end cover and disassemble the pump shaft and bearing.
g. Assemble in reverse order during installation.
6、 Malfunctions and troubleshooting
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fault |
cause |
Troubleshooting |
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The water pump is not working |
1. There is no liquid storage or insufficient liquid storage inside the pump casing 2. Air leakage in the suction pipeline 3. The speed is too low 4. The suction stroke is too high or the suction pipeline is too long 5. Excessive leakage of mechanical seal 6. The gas in the suction pipeline cannot be discharged from the outlet |
1. Add sufficient fluid storage 2. Check and eliminate any air leaks 3. Adjust the speed 4. Reduce the suction stroke or shorten the suction pipeline 5. Repair or replace 6. Discharge it |
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Excessive noise and vibration |
1. Unstable footing 2. Bending of pump shaft 3. Cavitation phenomenon 4. Severe bearing wear 5. There are impurities in the imported pipeline 6. The main shafts of the pump and motor are not concentric |
1. Reinforcement 2. Replace or calibrate 3. Adjust the working conditions 4. Replace 5. Drip off debris 6. Adjust coaxiality |
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Insufficient water output |
1. The impeller passage and suction pipe are blocked 1. The impeller or impeller seal is severely worn 3. Insufficient power or too low speed |
1. Remove blockages 2. Replace the mouth ring 3. Increase power and adjust to rated speed |
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Excessive shaft power consumption
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1. Excessive flow 2. The speed is too high 3. Bending of pump shaft or collision of impeller 4. The flow channel inside the pump is blocked or stuck |
1. Increase the outlet pressure 2. Reduce appropriately 3. Replace or calibrate 4. Remove blockages |
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