Why can’t the magnetic pump run idle?

Magnetic Pump is a leak-free conveying equipment widely used in chemical industry, electroplating, water treatment, semiconductor and other industries.

Because the magnetic pump cancels the traditional mechanical seal structure and adopts magnetic drive mode, it has the characteristics of no leakage, corrosion resistance, safety and reliability.

However, unlike ordinary centrifugal pumps, magnetic pumps have higher requirements for operating conditions. The most important point is:

The magnetic pump is strictly prohibited from dry running.

1. What is magnetic pump idling?

The idling of the magnetic pump refers to:

When the pump has no liquid or insufficient liquid, the motor still drives the impeller and magnetic rotor to rotate.

During normal operation, the conveyed liquid not only loads the flow, but also bears:

* Cooling internal parts

* Lubricate bearings

* Take away operating heat

When there is no liquid, heat cannot be effectively dissipated inside the pump.

2. Main hazards of idling magnetic pump

1. Causes rapid bearing wear

Magnetic pumps usually use:

* Ceramic bearings

* PTFE bearing

* Silicon carbide bearings

These bearings require fluid lubrication.

When idling:

* Increased friction

* Temperature rise

* Bearing damage

ultimately causes the pump to not function properly.

2. Causes magnet steel to demagnetize

The magnetic pump relies on internal and external magnets to transmit power.

Generates a lot of heat when idling:

* Magnetic steel temperature rises

* Reduced magnetic performance

* Reduced magnetic transmission efficiency

In severe cases, the magnetic drive may fail.

3. Damage to the impeller and pump body

Idling will cause:

* Plastic pump body deformed

* Impeller damaged

3. How to prevent the magnetic pump from idling?

1. Make sure there is enough liquid before starting

Before starting:

✔ Open the inlet valve

✔ Confirm that the liquid enters the pump chamber

✔ Remove air

2. Install liquid level protection device

Recommended installation for industrial applications:

* Liquid level switch

* Liquid level sensor

* Automatic protection system

Automatically stops operation when the liquid level is insufficient.

3. Avoid air leakage in the inlet pipeline

Check:

* Pipe connection

* Sealing position

* Filter clogging condition

Prevent air from entering and causing the pump to be unable to absorb liquid.

4. HENNVI magnetic pump application suggestions

Guangzhou HENNVI PP/PVDF, ETFE magnetic pumps are especially suitable for:

*Energy storage

* PCB production

* Semiconductor cleaning

*Medical

* Electroplating solution circulation

* Acid and alkali liquid transportation

* Chemical liquid transfer

*Environmentally friendly

Correct installation and operation can greatly extend the service life of the magnetic pump