General faults and daily maintenance methods of water pumps in water treatment systems

In water treatment equipment, one of the pipe fittings is the pump, and a good pump with stable quality is crucial for the overall quality of the equipment. However, during use, there are often

Due to improper manual operation, some minor faults have occurred. This article will introduce some common water pump faults and daily maintenance methods.

1. What are the possible reasons for discovering insufficient water pump flow? How to solve it?

(1) There is air inside the water pump - method: deflate.

(2) Another part of the sealing ring of the water pump is damaged - method: replace the sealing ring with another part.

(3) Air leakage at the packing area - Method: Apply some butter to the packing and tighten the packing pressure plate.

(4) If the speed of the water pump is too low, is the voltage too low? Method: Try to increase the voltage.

(5) Excessive impeller wear - Method: Replace the impeller and check for bearing wear.

(6) Incorrect motor rotation - Method: Adjust the phase.

(7) Impeller, water inlet, and pipeline blockage - Method: Remove debris.

(8) The centerline of the impeller is not immersed in the liquid - method: adjust the immersion height.

What are the possible reasons for the heating of the water pump bearings? How to solve it?

(1) The spindle and motor shaft are not concentric - Method: Adjust the concentricity.

(2) The bearing cover is short of oil or the oil has deteriorated - method: add oil or change the oil.

3. What is the possible reason for the insufficient lift of the water pump? What method is used to solve the problem?

(1) Impeller damage - method: replace with another part.

(2) Insufficient speed - Method: Check if the voltage and motor are normal.

(3) The infusion contains gas - method: reduce the liquid temperature to eliminate gas.

4. What are the possible causes of vibration or noise in the water pump? How to solve it?

(1) The spindle and motor shaft are not concentric - Method: Adjust the concentricity.

(2) Unbalanced rotor - Method: Replace with another component.

(3) Nut looseness - Method: Tighten the nuts in all parts.

(4) The infusion contains gas or operates without liquid - methods: reduce the liquid temperature, remove gas, and insert the impeller into the liquid.

(5) Excessive wear on the water bearing and journal - method: replace the water bearing and restore the shaft strength.

5. What are the possible reasons for the low or no liquid output of the water pump? What method is used to solve the problem?

(1) Incorrect motor rotation - Method: Adjust the phase.

(2) The centerline of the impeller is not immersed in the liquid - method: adjust the immersion height.

6. What are the possible causes of water pump power overload? How to solve it?

(1) Excessive medium density - Solution: Replace the high-power motor.

(2) The flow exceeds the usage range - Method: Work according to the usage range.

(3) Generate mechanical friction - Method: Check, adjust or replace worn parts.

7. How to maintain a water pump well

(1) Vulnerable parts are the most vulnerable part of water pumps, and special care needs to be taken for them during use, repair, and maintenance. So, a pump, its vulnerable parts

What are there? What should I pay attention to?

(2) Water pump casings are generally cast iron parts, which are prone to cracking under mechanical or thermal stress. When the water pump is impacted by cavitation during operation or fails in winter

When the accumulated water inside the pump casing is released and frozen, it is also prone to cracking. If the damage is severe and cannot be repaired, the pump casing should be replaced with a new one.

(3) The shaft of a water pump is usually made of carbon steel, but it is also prone to damage due to manufacturing quality, use, or installation reasons. The pump shaft may have cracks, bending, journal wear, and threads

Damage, etc., may also result in fracture accidents. If the damage is severe and cannot be repaired, the shaft should be replaced with a new one.

(4) The impeller is an important working component of a water pump, made of cast iron. Due to manufacturing quality and usage reasons, it is also prone to damage. Impeller may crack due to cavitation effect

The surface forms pits or perforations, which can cause the blades to become thin or eccentric due to long-term grinding, and even be shattered by debris. Some defects can be repaired: some defects cannot be repaired, so they should be replaced

New impeller.

(5) The bearing shells of sliding bearings are made of copper tin alloy and have poor wear resistance, making them one of the most easily worn and burnt out parts. The bearing shells can generally be repaired or replaced

Replace with a new one. Rolling bearings have an average service life of 5000 hours, but they are prone to wear or damage due to improper installation, prolonged use, or poor maintenance. Except for rolling bearings

Individual parts can be replaced with new ones, but generally the entire part needs to be replaced.

(6) The mouth ring, also known as a leakage or wear reducing ring, is one of the most easily worn parts in a water pump. After wear and tear, it can be repaired or replaced with a new one. When replacing with a new leak reducing ring,

The inner diameter should be configured according to the outer diameter of the impeller inlet. If the outer diameter of the impeller inlet is worn, turning can be carried out to eliminate grooves and ellipses, and then a reduction in the inner diameter can be configured

The outer diameter of the leakage ring and impeller inlet can generally be turned three times.

(7) After prolonged use, the filler will become hard and lose its elasticity, which can cause air and water leakage in the water pump. Generally, a new filler should be replaced.

(8) The water pump oil seal is a rubber product that is prone to wear and aging, and usually needs to be replaced with a new one.

The above is what Hongjie Water brings to you about "General faults and daily maintenance methods of water pumps in water treatment systems". We hope it can help you!

Shenzhen Hongjie Water Technology Co., Ltd. is an integrated high-tech enterprise specializing in product research and development, production, sales, engineering design, installation and debugging, technical consulting, and sales of supporting materials in the fields of industrial water treatment and drinking water treatment. Our main products include the design, manufacturing, installation, debugging, and maintenance of water treatment equipment, including pure water equipment, ultra pure water equipment, reverse osmosis equipment, GMP purified water equipment, EDI deionized water equipment, domestic sewage equipment, industrial wastewater equipment, softened water equipment, and reclaimed water reuse equipment, all of which are integrated into an environmentally friendly high-tech manufacturer.