The biggest feature and function of chemical pumps
The biggest feature and function of chemical pumps
Reliable operation of chemical pumps: The reliable operation of chemical pumps includes two meanings: first, long-term operation without failure; Secondly, various parameters remain stable during operation. The reliability of operation is crucial for chemical production. If the pump frequently malfunctions, it will not only cause frequent shutdowns, affecting production and economic benefits, but sometimes may also cause accidents in the chemical system. The fluctuation of chemical pump speed can cause fluctuations in flow rate and pump outlet pressure, which can disrupt normal chemical production or affect reactions in the system, resulting in material imbalance. This not only causes waste, but also leads to a decrease in product quality or scrap of products.The main chemical pump product names of China chemical pump Network include:FIU type corrosion and wear resistant mortar pump，FJX type forced circulation pump，FPZ self-priming pump，FS type FRP centrifugal pump，FSB type fluoroplastic centrifugal pump，FV PVDF pump，FXQ type small flow, high head tangent pump，FY series submerged pump，FYH submerged pump
No leakage or minimal leakage: The medium transported by chemical pumps is mostly flammable, explosive, toxic, and harmful liquids. Once leaked, it will seriously pollute the environment, endanger personal safety and the physical and mental health of employees, and do not meet the requirements of leak free factories and clean and civilized factories. Therefore, it is necessary to ensure that chemical pumps do not leak during operation, adopt new technologies and materials for pump sealing, operate according to regulations, and conduct high-quality maintenance.
It can transport liquids in critical states, which often vaporize when the temperature increases or the pressure decreases. Chemical pumps sometimes transport liquids in critical states. Once the liquid vaporizes inside the pump, it is prone to cavitation damage, which requires the pump to have high resistance to cavitation. Meanwhile, the vaporization of the liquid may cause friction and adhesion between the moving and stationary parts inside the pump, which requires a larger clearance. In order to avoid damage to mechanical seals, packing seals, labyrinth seals, etc. due to dry friction caused by liquid vaporization, such chemical pumps must have a structure that fully eliminates the gas generated inside the pump. Pumps that transport critical state liquids can use shaft seal materials with good self-lubricating properties, such as polytetrafluoroethylene, graphite, etc. For shaft seal structures, in addition to packing seals, double end mechanical seals or labyrinth seals can also be used. When using a double end mechanical seal, the cavity between the two end faces is filled with external sealing liquid; When using a labyrinth seal, a sealing gas with a certain pressure can be introduced from the outside. When sealing liquid or sealing gas leaks into the pump, it should be harmless to the pumping medium, and if it leaks into the atmosphere, it is also harmless. When transporting critical liquid helium, methanol can be used as the sealing liquid in the cavity of the double end mechanical seal; When transporting liquid hydrocarbons that are prone to vaporization, nitrogen can be introduced into the labyrinth seal.
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2024-11-01
