The shield pump adopts graphite sliding bearing which is treated by epoxy resin. Its performance is good corrosion resistance, high wear resistance, heat resistance and low friction coefficient. In addition, there are lubrication and cooling grooves in the inner hole and end face of graphite bearing, so that the medium can lubricate and cool it.
Tips for selecting shielding pump
Commonly used centrifugal pump is driven by coupling the impeller shaft of the pump and the motor shaft, so that the impeller and the motor work together. Shield pump is also a centrifugal pump, the impeller part of the pump forms the rotor of the motor, and the pump body is provided with the stator of the motor along the pump shaft. The outside is the pump casing. There is a ring gap of about 0.7mm between the stator and the rotor. When the pump is working, part of the liquid pumped passes through the ring gap to cool the motor.
Therefore, the shield pump has compact structure, low vibration and noise, high pump efficiency, low energy consumption and no leakage. In terms of safety, labor hygiene and energy saving, it can achieve satisfactory results in pumping highly corrosive, flammable, explosive or toxic liquids.
Vertical shield pump is a special infusion machine integrated with pump. It can be widely used in cold and hot water circulation system and water supply system of petroleum, chemical industry, metallurgy, scientific research institutions, hospitals, schools, hotels and office buildings, as well as other media with physical and chemical properties similar to water. The difference between the shield vertical pipeline pump and the common horizontal pump is that the shield device is designed in the motor, that is, the shield sleeve is installed on the stator and rotor parts to ensure that the stator, rotor core and winding are not eroded by the transmitted medium. The shield sleeve is welded by stainless steel sheet with high strength, corrosion resistance, high resistance and non magnetism. The welding and shaping are completed by special equipment and process, and then the helium leak test is carried out on the weld to ensure that the shielding sleeve does not leak.
In the shield motor, the graphite sliding bearing treated by epoxy resin is used. Its performance is good corrosion resistance, high wear resistance, heat resistance and low friction coefficient. In addition, there are lubrication and cooling grooves in the inner hole and end face of graphite bearing, so that the medium can lubricate and cool it.
The graphite bearing and the bearing sleeve form a pair of wear-resistant pairs. The base of the bearing sleeve is made of lcr18ni9ti stainless steel, and the surface is spray welded with nickel base alloy, thus forming a higher wear-resistant pair. Blue sea pump industry in the overall design of motor and pump body, impeller and rotor coaxial operation in the medium, there is no shaft seal (any mechanical seal has the problem of wear, leakage), so there is no dynamic seal to completely solve the problem of water leakage. Because the shield pump adopts the circulating cooling system with filter device, which ensures that the graphite bearing of the motor has good lubricity all the time. At the same time, it cools the motor, thus greatly prolonging the service life of the motor. In the aspect of hydraulic design, the impeller adopts * advanced horizontal model, precision casting and strict dynamic balance test, with high efficiency and stable operation.