Shielded pump

    The leak-free shield pump is a non-sealed pump, and the pump and drive motor are sealed in a pressurized container filled with the pump, which is sealed only by a wire set to provide a rotating magnetic field and drive the rotor. This structure eliminates the traditional centrifugal pump with a rotary shaft seal device, it can be completely no leakage.

    The shield pump connects the pump and the motor together. The rotor of the motor and the impeller of the pump are fixed on the same shaft. The rotor and the stator of the motor are separated by a shield. The rotor is operated in the medium being conveyed. The power is driven by the stator magnetic field Pass to the rotor.

    In addition, the manufacture of shielded pumps is not complicated and its hydraulic end can be designed and manufactured in accordance with the type of structure commonly used by centrifugal pumps and the relevant standard specifications.

    advantages of shielded pumps

    (1) fully enclosed. Structure is not moving seal, only in the pump shell at the static seal, it can be completely no leakage, especially for transport flammable, explosive, precious liquid and toxic, corrosive and radioactive liquid.

    (2) high security. The rotor and the stator each have a shield so that the motor rotor and the stator are not in contact with the material, even if the shield is broken, there is no risk of external leakage.

    (3) less compact structure. Pump and motor system as a whole, disassembly without looking for the center. Low requirements for the base and foundation, and less daily maintenance work, low maintenance costs.

    (4) smooth operation, low noise, no need to add lubricants. Because there is no rolling bearing and motor fan, so no need to add lubricating oil, and low noise.

    (5) the use of a wide range. High temperature, high pressure, low temperature, high melting point and other conditions can meet the requirements

    Application areas

    A civilian

    1, ground source heat pump air conditioning circulating water system;

    2, lithium bromide air conditioning unit air conditioning pump, transformer oil pump, locomotive pump;

    3, heating and heating circulating water system;

    4, fire water pressurization system;

    5, tap water pressurization system.

    Two industrial and military aerospace

    1, chemical and pharmaceutical industry with toxic and hazardous liquid delivery;

    2, before the launch of space rocket fuel injection;

    3, nuclear power plant with nuclear level shielding pump.