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    Home > Active Ingredient News > Drugs Articles > Precautions of screw vacuum pump in operation

    Precautions of screw vacuum pump in operation

    • Last Update: 2019-08-01
    • Source: Internet
    • Author: User
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    Screw vacuum pump has low power, low noise and fast pumping speed Water cooling, air cooling and explosion-proof motors can be selected according to the process / environment requirements The air-cooled motor can be equipped with self circulation cooling system, and can be used in the environment without cooling water system According to different requirements, we can choose Lu type pump, and the pumping rate can reach 3500m3 / h what are the precautions for screw vacuum pump in operation? Today, I'd like to make some introductions for you: 1 Generally, the inlet valve and outlet valve should be fully opened before start-up After opening the outlet valve, the pronock screw vacuum pump should be started as soon as possible It is strictly forbidden to start the pump without opening the outlet valve (if the outlet valve is closed, the inlet and outlet connecting valves must be fully opened) 2 If the flow plate required by the process is small, the outlet valve can be slightly or not opened, and the connecting valve at the inlet and outlet I can be fully opened at the same time After the pump is started normally, the outlet can be slowly opened according to the process needs, and the connecting valve can be slowly closed to the normal working condition 3 Long time operation without pump filling is strictly prohibited 4 Stop the pump immediately in case of any of the following conditions: serious leakage, abnormal vibration, peculiar smell, spark, smoke, overshadow, and continuous over high current 5 During the operation of screw vacuum pump, the bearing temperature shall not exceed the ambient temperature of 35C, and the high temperature shall not exceed 80C 6 The flow and pressure are stable, and the current does not exceed the rated value 7 Seal leakage shall not exceed the following requirements A mechanical seal: heavy oil shall not exceed 5 drops / min, light oil shall not exceed 10 drops / min B packing seal: no more than 10 drops / min for heavy oil and no more than 20 drops / min for light oil
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