First, the foreword A company new product 40,000 tons / year methane chloride new device has been officially opened. In the selection of project equipment, we have extensive research, adhere to the concept of innovation, according to the production process and transport material properties of media, the selection of 27 sets of new Mihai gram magnetic pump. Sea Mi ladder magnetic pump is from Dalian Sea Mi Le sealed Pump Co., Ltd. production. The pump design advanced, no shaft seal, as a leak-free, maintenance-free, reliable centrifugal pump operation, with safety, efficiency, energy saving features. For transporting corrosive, toxic, flammable, explosive, expensive or easy to vaporize liquids. In addition, the sea-Mile ladder magnetic pump is also suitable for transporting high-temperature, low-temperature fluids and liquids under vacuum. Due to its completely leak-free advantages, it has successfully solved the problems of running, running, dripping and leaking in fluid transportation. It has become an irreplaceable product in environmental engineering and is widely used in petroleum, chemical, refrigeration, air-conditioning, aerospace, etc. In the field. Compared with the traditional seal pump, sea Mirage gram magnetic pump with a maintenance workload is small, without external lubrication, no leakage, vibration, noise and other advantages. However, due to its own characteristics in many ways it is different from the traditional centrifugal pump, so in the process, installation, operation and so take some measures and ways to ensure its reliable and smooth operation. Second, the characteristics of sea-Mi ladder magnetic pump 1. Structure: Sea-Mi ladder magnetic pump is axial inhalation, radial discharge of the horizontal completely leak-free centrifugal pump, the shaft through the magnetic coupling drive, no rotary shaft seal Device, Sea Mirage gram magnetic pump to achieve "zero leakage." 2. Bearing: Sea-Mile ladder magnetic drive shaft through the rolling bearing bearings, rolling bearings lubricated by its own grease; pump shaft through the hydraulic sliding bearings. 3. Magnetic coupling: Sea Mirage Keke magnetic pump magnetic block is a high-quality rare earth permanent magnet materials, the maximum irreversible temperature up to 350-400 ℃, fully guaranteed the magnetic coupling with reliable performance. Normal work, the magnetic coupling and three-phase asynchronous motor synchronous operation, stable performance. And permanent magnets are highly stable and prevent the adverse effects of assembling and disassembling the rotor or operating the pump at maximum torque. 4. Lubrication of plain bearings and cooling of magnetic couplings: Lubrication and cooling of the medium delivered by the pump requires no external oil and cooling water system. 5. Axial force balance: At work, the axial force of the sea-gravel magnetic pump is automatically balanced by the hydraulic force to promote the plate to withstand instantaneous axial thrust when starting and stopping. Third, the sea-ladder magnetic pump failure analysis of a common problem 1. Pump operating conditions caused by a large fluctuation: Sea-ladder magnetic pump axial force is through the pneumatic data "> Automatic balancing of hydraulic equilibrium. In the actual operation If the operating parameters (inlet pressure, outlet pressure) fluctuations, it is easy to damage the Mihai Gram magnetic pump hydraulic balance, so that the bearing to bear the large radial and axial force caused by bearing damage. Erosion caused by the problem: the main cause of cavitation pump pump entrance tube resistance, gas transmission medium more, inadequate irrigation pump inlet pump head is not enough, etc. Cavitation damage to the pump the most, the occurrence of cavitation Severe vibration of the pump and severe hydraulic balance damage will damage the pump bearings, rotor or impeller, which is a common cause of faults in a magnetic seal pump.