How to Prevent Magnetic Drive Pumps from Corrosion

Nov 14, 2022 Leave a message

Corrosion impact of corrosion-resistant magnetic pump Corrosion has always been one of the more headache hazards of chemical equipment. According to relevant statistics, about 60% of the damage of corrosion-resistant magnetic pump chemical equipment is caused by corrosion. Therefore, when selecting a corrosion-resistant magnetic pump, we must first pay attention to the scientificity of material selection.

There is usually a misunderstanding that stainless steel is a "universal material", and it is very dangerous to hold stainless steel regardless of the medium and environmental conditions.

Corrosion-resistant magnetic pump manual water filling method For small pump stations with a water inlet pipe diameter less than 300mm, there is usually a bottom valve at the inlet of the water inlet pipe. Generally, the artificial water filling method is mostly used, that is, the special water filling method on the upper part of the corrosion-resistant magnetic pump casing is used. The vent hole is filled with water by a water-filled funnel (or an upside-down ordinary bottle with the bottom removed).

For small pump stations with a water inlet pipe diameter of less than 300mm, a bottom valve is usually provided at the inlet of the water inlet pipe, and water can also be filled into the pump from the outlet pipe port of the corrosion-resistant magnetic pump (pump station with a short water outlet pipe).

Since there is no need to purchase other water-filling equipment, this water-filling method is relatively common in small rural pumping stations. The pipeline arrangement condition of the corrosion-resistant magnetic pump device system refers to the liquid feeding height and the liquid feeding distance. The suction side is relatively low in liquid level, and the discharge side is relatively high in liquid level, and some data such as pipeline specifications and their lengths, materials, pipe fittings specifications, and quantities, etc., are used to calculate the head of the tie-comb and check the NPSH.

Cause of Corrosion: Influence of Sealing
No leakage is the eternal pursuit of corrosion-resistant magnetic pump chemical equipment, and it is this requirement that has contributed to the increasing application of magnetic pumps and canned pumps. However, there is still a long way to go to achieve no leakage, such as the life of the corrosion-resistant magnetic pump isolation sleeve and the shielding pump shielding sleeve, the pitting corrosion problem of the material, the reliability of the static seal, and so on. Now let's briefly introduce some basic conditions of sealing.

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