The high-temperature plastic-lined magnetic pump is composed of three main parts, namely the self-priming pump, magnetic drive, and motor. The magnetic drive, which is the primary component of the pump, consists of an outer magnetic rotor, inner magnetic rotor, and a non-magnetic isolation sleeve. These three elements work together seamlessly to ensure efficient and effective pump operation. The unique design of the magnetic drive ensures that the pump is capable of handling even the most challenging applications with ease and precision. With this high-temperature plastic-lined magnetic pump, you can be confident in the reliability and durability of your pumping system, even under the most difficult operating conditions.
Permanent magnets are made of materials that have a wide operating temperature range, typically ranging from -45 to 400℃. These magnets possess high coercive force and exhibit good anisotropy in the direction of the magnetic field. It is worth noting that these magnets do not undergo demagnetization when their same poles are brought close together. Due to these properties, permanent magnets serve as a reliable and consistent source of magnetic field.
An isolation sleeve made of metal is an effective solution for minimizing the effects of a sinusoidal alternating magnetic field. In such a field, the sleeve induces eddy currents within its cross-sectional area, which convert into heat. This helps to prevent the magnetic field from affecting the surrounding environment and ensures maximum protection against unwanted interference. By utilizing this technology, it's possible to create a safe and secure environment for sensitive equipment that would otherwise be susceptible to magnetic interference.
Controlling the flow of cooling lubricating fluid is essential when operating a high-temperature plastic-lined magnetic pump. This is because a small amount of liquid is required to wash and cool the area between the inner magnetic rotor and the isolating sleeve and the friction pair of the sliding bearing. Typically, the coolant flow rate is maintained at 2%-3% of the design flow rate of the pump. This is necessary because the high heat generated by eddy currents in the annulus between the inner magnetic rotor and the isolating sleeve can cause the temperature of the medium to exceed the working temperature of the permanent magnet if there is insufficient lubricant or if the flushing hole is not smooth or blocked. When the medium is water or water-based liquid, the temperature rise in the annulus area should be around 3-5°C, whereas when the medium is hydrocarbon or oil, the temperature rise should be maintained at 5-8°C. Failure to control the flow of cooling lubricant could result in the inner magnetic rotor losing its magnetism, leading to magnetic drive failure.