What are the reasons for water leakage in mine submersible pumps?

08-27 15:21

This passage provides a brief description of the reasons for water leakage in mine submersible pumps and offers solutions to address the issue. It highlights factors such as wear and aging of sealing devices, and suggests methods like replacing sealing rings, repairing or swapping components, using rubber cloth or hard cardboard, and applying rust prevention measures. It also emphasizes the importance of surface smoothness, material purity, and sealing rings in ensuring the waterproof quality of the pump unit.

Why does the mine submersible pump leak? Today, Panshi Pump Industry in Shijiazhuang will summarize the reasons for the leakage of mine submersible drainage pumps. The main causes of water leakage are the wear and aging of the sealing device. The main reasons for water leakage are listed below:

The sealing ring of the mine submersible pump loses elasticity after long-term use. At this time, the sealing ring can be taken out, a piece of paper or cloth with a thickness of 0.3 to 0.5 millimeters larger than the original sealing ring can be cut and installed in the groove, and then the original sealing ring can be installed.
The rubber sealing ring inside the nylon sealing seat of the mine submersible pump is worn. The sealing ring can be taken out and installed by swapping positions. If the captive spring on the sealing ring loses elasticity or breaks, the spring can be removed and tightened with a suitable diameter wire or iron wire.
The rubber sealing ring of the oil hole of the mine submersible pump is damaged. A piece of rubber cloth slightly larger than the bolt hole can be cut, and a flat washer can be added on top of it, and then it can be placed in the bolt hole.
The sealing ring between the seal box of the mine submersible pump and the cast iron loses elasticity. The sealing ring can be taken out of the cast iron groove, and a piece of hard cardboard with a thickness of 0.6 to 1 millimeter can be cut into the same size and placed in the groove, and then the sealing ring can be put back in.
If the sealing ring of the mine submersible pump is severely worn, the nylon sealing ring can be taken out, coated with butter asbestos rope, wrapped around the stainless steel sleeve and filled slightly higher than the original nylon seat, then filled with butter, and finally the nylon seat can be pressed tightly with bolts.

In addition to these, rust prevention should be noted. For the impeller of the mine submersible pump, anti-rust paint can be sprayed or painted, and copper and stainless steel materials can be used to produce the impeller. The pump shaft can be treated with chrome plating or made of stainless steel. The flow part of the pump body of the mine submersible pump should be polished clean and smooth, and coated with two layers of anti-rust paint, or lined with F46. Cast iron pump bodies and cast steel pump bodies can be used for a long time under conditions where the corrosion is not severe.

Regarding the rust prevention and leakage prevention of the motor of the mine submersible pump, the motor of the drainage pump works underwater and is an embedded type. The surface anti-corrosion work is the same as the general motor treatment, using processes such as immersion painting, drying, and assembly. The assembly accuracy and tightness of the pump body of the mine submersible pump are related to the waterproof quality. The surface smoothness of the joint parts of the workpiece should be high, and the material purity should be high. The sealing ring plays a sealing role when installing the mine submersible pump unit.