Fluoroplastic self-priming pumps are widely used due to their good corrosion resistance, especially in the chemical industry. Here are five basic ways to choose a fluoroplastic self-priming pump. Fluoroplastic self-priming pumps are made of fluoroplastics, whether they are lined or perfluorinated pumps, collectively referred to as fluoroplastic self-priming pumps, and there are many types. The advantages of centrifugal pumps, magnetic pumps, etc. are nothing more than their corrosion resistance. Inert*. At present, there is no chemical medium that can corrode it. Some fluoroplastic self-priming pumps have strong corrosion resistance, and there is no problem with strong acids and alkalis. The only problem is that it is not resistant to low temperature. Ordinary polytetrafluoroethylene cannot be used at a temperature of 80 degrees, and soluble polytetrafluoroethylene above 120 degrees cannot be used.
Fluoroplastic self-priming pumps are specially designed for the working conditions of small flow and small head. Not only has the performance of ordinary pumps, but also has the advantages of compact structure, beautiful appearance, small volume, low noise, and reliable operation; and its flow-passing parts are all made of fluoroplastics, and the isolation sleeve is made of special materials with high-strength mechanical properties. The magnetic eddy current phenomenon existing in ordinary magnetic pumps is eliminated.
Plastic pumps are widely used in chemical industry, acid making, alkali making, smelting, rare earth, dye, medicine, paper making, electroplating, electrolysis, pickling, radio, chemical foil, scientific research institutions, national defense industry and other industries to transport acid and alkali with any concentration nature, oils, rare precious liquids, toxic liquids, volatile chemical media. Especially the transportation of leaky, flammable and explosive liquids.
Fluoroplastic self-priming pumps combine the excellent characteristics of ordinary pumps, and have the advantage of being self-priming, and the height of self-priming in general can reach 2-4 meters. It fully combines all the advantages of self-priming pumps and magnetic pumps, and has self-priming functions. The shaft seal is also banned, and the magnetic force is used for direct transmission, which completely eliminates the phenomenon of dripping. Fluoroplastic self-priming pumps have flow-passing parts made of the world's "king of plastics" (fluoroplastics) with excellent corrosion resistance. The plastic pump body is made of metal shell lined with polyfluoroethylene propylene (F46). The pump cover and impeller are They are all sintered and suppressed with metal inserts outsourcing fluoroplastics. The isolation sleeve is made of special materials with high-strength mechanical properties and eliminates the magnetic eddy current phenomenon existing in ordinary magnetic pumps.
The fluoroplastic self-priming pump adopts a unique rear-pull structure, and one person can easily carry out external maintenance and parts replacement without installing pipelines. The corrosion-resistant pump is mainly used for the transportation of those corrosive liquids? and maintenance tasks.
The fluoroplastic self-priming pump completely solves the leakage of the shaft seal of the mechanical transmission pump, and the energy-saving and environment-friendly intermediate frequency induction furnace makes the original analysis. It is a new type of industrial pump with full sealing, no leakage and no pollution. Fluoroplastic self-priming pump has the characteristics of safety, high efficiency and energy saving. Fluoroplastic self-priming pumps are suitable for transporting corrosive, toxic, flammable, explosive, cheap or vaporizable liquids, etc. Because of the advantage of being completely leak-free, it has successfully solved the problems of running, popping, dripping, and leaking in fluid transportation, and has become an irreplaceable product in environmental protection projects. Fluoroplastic self-priming pumps are suitable for chemical, acid, and alkali manufacturing. , smelting, rare earth, dyes, medicine, paper making, electroplating, electrolysis, pickling, radio, chemical foil, scientific research institutions, national defense industry and other industries.
The normal operation and maintenance of the mechanical seal of the fluoroplastic self-priming pump is very important, which is related to the efficiency and cost of industrial production and processing. Therefore, everyone should understand the matters needing attention before and after the operation of the fluoroplastic self-priming pump.
1. Preparations and precautions before launching
Check all the mechanical seals, as well as whether the ancillary equipment and pipeline installations are complete and meet the technical requirements. Perform a static pressure test before the mechanical seal is started to check whether the mechanical seal has any leakage. If there are many leaks, find out the reason and try to eliminate it. If it is still invalid, it should be disassembled to check and reinstall. Usually the static pressure test pressure is 2~3 kg/cm2. Press the steering wheel to see if it is brisk and even. If the turning is difficult or does not move, you should check whether the assembly size is wrong and whether the installation is reasonable.
2. Installation and shutdown
Before starting, the sealed chamber should be filled with liquid. When transporting condensed medium, steam should be used to heat the sealed cavity to melt the medium. The car must be cranked before starting to prevent the soft ring from being broken due to sudden start. For mechanical seals that use the pump's external oil sealing system, the oil sealing system should be started first. Stop the oil sealing system after parking. After the hot oil pump is out of service, the cooling water in the oil seal chamber and the end face seal cannot be stopped immediately. The cooling water can only be stopped when the oil temperature at the end face seal drops below 80 degrees to avoid damage to the sealing parts.
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