In leak-free pumps, shield pumps are more widely used. Shielding pump with a stator winding and rotor windings were placed in a sealed metal cylinder motor drive shield, pump housing and drive motor housing flange seal connected to the pump to remove the pump shaft seal structure. Suitable for transporting valuable liquids or radioactive liquids. Structure type: 1, integrated structure of the motor and pump, pump and motor for the coaxial connection; 2, the motor stator inside and outside the rotor has a shielding sleeve, shielding sleeve inside and pump communication; 3, the installation of sub-horizontal and vertical Two kinds 4, the motor cancels the cooling fan, through the stator and the rotor between the circulating medium to cool the motor, while using the motor base surface cooling. Features: 1, the motor and pump integrated structure, all static seal, the pump is completely leak-free; 2, closed, no leakage of toxic and hazardous substances can be transported liquid; 3, using shielded water-cooled motor and the abolition of cooling Fan makes the pump quiet operation of low noise, suitable for high ambient noise requirements of the occasion; 4, the use of transport medium lubrication of graphite sliding bearings, lower operating noise and without artificial fuel, reducing maintenance costs; In recent years, bearing material Also added silicon carbide SIC, superhard, etc., better life than graphite bearings. 5, the vertical structure can be installed on the pipe like a valve, easy and quick installation, and maintenance only when the motor and impeller can be extracted without removing the pipe. 6, can be installed with shock absorbers or shock absorbers to run, so that pump noise in operation is lower. Shielded electric pump in the form of: 1, the basic type of general transport of materials; 2, the transport of easily vaporized material reverse cycle and reverse pressure type; 3, high temperature transmission of high temperature materials, usually below 350 degrees; 5, the high melting point type conveying high melting point material; 6, the conveying material level is lower than the self-absorption type of pump inlet, the height of self-absorption should be lower than 5 meters. Shielded electric pump application areas, civil: 1, ground source heat pump air conditioning circulating water system; 2, lithium bromide air conditioning unit air conditioning pump, transformer pump, locomotive pumps; 3, heating heating circulating water system; 4, fire water pressurization system ; 5, tap water pressurization system. Second, the industrial and military aerospace: 1, chemical and pharmaceutical industries with toxic and hazardous liquid transport; 2, space rocket launch fuel before filling; 3, nuclear power plants with nuclear-screened pump.
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