Fluorine-butterfly centrifugal pump start-up operation considerations and requirements of mechanical seal

Fluorine-butterfly centrifugal pump widely used gradually popular, mainly fluorine-butterfly centrifugal pump corrosion resistance is strong, applicable to all kinds of acid, strong alkali corrosion medium, get the user's consistent high praise, fluorine-butterfly sealing conditions of centrifugal pump mechanical seal is important components, each user in the use of lining fluoride centrifugal pump according to the requirements of often start running for a period of time to close, need at startup, when the mechanical seal for centrifugal pump seal of damage of it is very easy to use, as parts of mechanical seal is easily damaged in start-stop, how to use it to better and more lasting safer to use, how to operation, pay attention to what? A, 1, before the start of installation and service should be kept sealed cavity filled with liquid. For solidification of the medium, the application of steam heat seal chamber to melt medium. Prior to start turning, in order to prevent sudden start caused by the soft ring fracture. According to the pump rotate to turning, check whether the light evenly. Such as turning demanding or not move, should check whether assembly size error, installation is reasonable. 2, hot oil pump stop can't stop immediately after sealing oil cavity and end face seal cooling water, should be end face seal oil temperature has dropped below 80 degrees, can stop the cooling water, so as not to damage the sealing parts. 3, for the use of water pump WaiFeng oil system of mechanical seal, should start the sealing oil system. After parking stop sealing oil system. Second, ready to start work and note 1, comprehensive check the mechanical seal, and accessory devices and pipeline installation is complete, meets the technical requirements. 2, before starting the mechanical seal to static pressure test, check whether there is mechanical seal leakage phenomenon. If the leakage is more, should find out the reason to try to eliminate. If still invalid, should remove check and reinstall. General hydrostatic test pressure in 2 ~ 3 kg/cm2. 3, 1, fluorine-butterfly centrifugal pump operation after start-up if there is a slight leakage phenomenon, should be observed for a period of time. Such as 4 hours of continuous running, still don't reduce the leakage, should stop the pump to check. 2, fluorine-butterfly centrifugal water pump in operation, should avoid to occur, in order to avoid damage in seal face dry friction and sealing. 3, fluorine-butterfly centrifugal water pump operating pressure should be smooth, pressure fluctuation is not more than 1 kg/cm2. 4, seal check regularly. In operation, when the leak than standard, heavy oil is not more than 5 drops per minute, light oil is not more than 10 / points, such as 2 - 3 days still no improvement, should stop pump check sealing device.
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