CQ and ZCQ series magnetic pumps

This pump replaces dynamic seals with static seals, ensuring that the overcurrent components of the pump are completely sealed, completely solving the problems of running, emitting, dripping, and leaking that cannot be avoided by other pump mechanical seals. The materials for the pump body and overcurrent components are made of corrosion-resistant stainless steel, corundum ceramic PTFE graphite, and other materialsCQThe function of the model also integrates self-priming, without the need for a bottom valve or water inlet.

1Permanent magnet: Permanent magnets made of rare earth permanent magnet materials have a wide working temperature range（-45℃--400℃），

High coercivity, good anisotropy in magnetic field direction, and no demagnetization phenomenon occurs even when the same polarity is close.

2. Isolation sleeve: When using a metal isolation sleeve, the isolation sleeve will be in a sinusoidal alternating magnetic field, perpendicular to

Eddy currents are induced on the cross-section in the direction of magnetic field lines and converted into heat. After the oil pump is designed, the rated speed and magnetic transmission torque of the pump are given by the operating conditions. To reduce eddy currents, the pressure inside the spacer and the inner diameter of the spacer can only be considered. High resistivity and high-strength non-metallic materials are used to make the spacer, which has a significant effect on reducing eddy currents.

3. Sliding bearings: The materials of sliding bearings include impregnated graphite, engineering ceramics, filled polytetrafluoroethylene, etc. Due to

Engineering ceramics have the advantages of heat resistance, corrosion resistance, and friction resistance, so the sliding bearings of magnetic pumps are often made of engineering ceramics. However, engineering ceramics have brittle properties and a small coefficient of expansion, so the bearing clearance should not be too small to avoid shaft hugging accidents. Due to the fact that the sliding bearings of magnetic pumps are lubricated with the medium being transported, different materials of bearings should be selected according to different media and operating conditions.

4. Control of cooling lubricant flow: During pump operation, a small amount of coolant must be used to flush and cool the annular gap area between the inner magnetic rotor and the isolation sleeve, as well as the friction of the sliding bearing. The flow rate of coolant is usually 2% -3% of the design flow rate of the oil pump. The annular gap area between the inner magnetic rotor and the isolation sleeve generates high heat due to eddy currents. When the amount of coolant is small or the flushing hole is not smooth or blocked, it will cause the medium temperature to be higher than the working temperature of the permanent magnet, gradually causing the inner magnetic rotor to lose magnetism and the magnetic drive to fail. When the medium is water or water-based liquid, the temperature in the annular gap area can be maintained at 3 ℃ -5 ℃; When the medium is hydrocarbons or oil, the temperature in the annular region can be maintained between 5 ℃ and 8 ℃.

5. Protective measures: When the driven components of the magnetic transmission operate under overload or the rotor gets stuck, the main and driven components of the magnetic transmission will automatically detach, thereby protecting the oil pump. At this time, the permanent magnet on the magnetic actuator will generate eddy and magnetic losses under the action of the active rotor alternating magnetic field, causing the temperature of the permanent magnet to rise and the magnetic actuator to slip and fail.

【main purpose】

Magnetic pump has a compact structure, beautiful appearance, small volume, low noise, reliable operation, and easy use and maintenance. It can be widely used in chemical, pharmaceutical, petroleum, electroplating, food, film photography and printing, and scientific research institutions. National defense industry and other units pump acid, alkali solution, oil, rare and precious liquids, plating solutions, volatile liquids, as well as circulating water matching. Especially for the pumping of flammable, explosive, and volatile liquids, this pump is more ideal.