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The driving of the commonly used centrifugal pump is to connect the impeller shaft of the pump with the motor shaft through the coupling, and the impeller and the electric motor rotate together to work. The shield pump is also a centrifugal pump. The impeller part of the pump constitutes the rotor of the motor, and the stator of the motor is arranged along the pump shaft in the pump body. The outside is the pump casing. An annular gap of about 0.7 mm is provided between the stator and the rotor, and a part of the liquid pumped while the pump is operating passes through the annular gap to cool the motor.
Therefore, the shield pump has a compact structure, low vibration and noise, high pump efficiency, low energy consumption, and no leakage. From the safety, labor hygiene and energy saving meters, the use of a shield pump can achieve satisfactory results for pumping highly corrosive, flammable, explosive or toxic liquids.
The LHP vertical shield pump developed by Zhejiang Yongjia Lanhai Pump Co., Ltd. is a special infusion machine for pumping. It can be widely used in petroleum, chemical, metallurgical, scientific research units, hospitals, schools, hotels, office buildings, etc. Water circulation systems, water supply systems, and other media that transport physical and chemical properties similar to water. The difference between the shielded vertical pipeline pump and the ordinary horizontal pump is that the motor is designed with a shielding device, that is, a shielding sleeve is arranged on the stator and the rotor component to ensure that the stator, the rotor core and the winding are not eroded by the transported medium. The shielding sleeve is welded by a stainless steel sheet with high strength, corrosion resistance, high resistance and non-magnetic properties. Welding and shaping are done by special equipment and process. Finally, the weld is tested for helium leak test to ensure that the shield is absolutely leak-proof. In the shielded motor, a graphite sliding bearing treated with impregnated epoxy resin is used, which has good corrosion resistance, high wear resistance and heat resistance, and low friction coefficient. In addition, there are lubrication and cooling grooves in the inner and end faces of the graphite bearing for the medium to lubricate and cool. The graphite bearing and the bearing sleeve constitute a pair of grinding, the base of the bearing sleeve is made of lcr18Ni9Ti stainless steel, and the surface is spray-welded with a nickel-based alloy, thereby forming a high wear-resistance. The blue sea pump industry is designed in the overall design of the motor and the pump body. The impeller and the rotor run coaxially in the medium. There is no shaft seal (there is wear and leakage of any mechanical seal), so there is no dynamic seal to completely solve the problem of water leakage. .
Therefore, the shield pump has a compact structure, low vibration and noise, high pump efficiency, low energy consumption, and no leakage. From the safety, labor hygiene and energy saving meters, the use of a shield pump can achieve satisfactory results for pumping highly corrosive, flammable, explosive or toxic liquids.
The LHP vertical shield pump developed by Zhejiang Yongjia Lanhai Pump Co., Ltd. is a special infusion machine for pumping. It can be widely used in petroleum, chemical, metallurgical, scientific research units, hospitals, schools, hotels, office buildings, etc. Water circulation systems, water supply systems, and other media that transport physical and chemical properties similar to water. The difference between the shielded vertical pipeline pump and the ordinary horizontal pump is that the motor is designed with a shielding device, that is, a shielding sleeve is arranged on the stator and the rotor component to ensure that the stator, the rotor core and the winding are not eroded by the transported medium. The shielding sleeve is welded by a stainless steel sheet with high strength, corrosion resistance, high resistance and non-magnetic properties. Welding and shaping are done by special equipment and process. Finally, the weld is tested for helium leak test to ensure that the shield is absolutely leak-proof. In the shielded motor, a graphite sliding bearing treated with impregnated epoxy resin is used, which has good corrosion resistance, high wear resistance and heat resistance, and low friction coefficient. In addition, there are lubrication and cooling grooves in the inner and end faces of the graphite bearing for the medium to lubricate and cool. The graphite bearing and the bearing sleeve constitute a pair of grinding, the base of the bearing sleeve is made of lcr18Ni9Ti stainless steel, and the surface is spray-welded with a nickel-based alloy, thereby forming a high wear-resistance. The blue sea pump industry is designed in the overall design of the motor and the pump body. The impeller and the rotor run coaxially in the medium. There is no shaft seal (there is wear and leakage of any mechanical seal), so there is no dynamic seal to completely solve the problem of water leakage. .
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