Rotary pump use precautions and operating procedures
2022-09-20 17:45:30
Read:
Share:
1. Precautions before starting: (1) Check whether the oil quantity in the gearbox is normal, observe the transparent oil mark, the oil stock should be half of the oil mark window, and the lubricating oil should be replaced regularly. (2) Open all the inlet and outlet valves of the pipeline before starting. When the medium flows into the cavity, if there is no abnormality after turning the pump by hand, you can jog it first. After confirming the direction of the pump and the flow of the medium, the official operation will start. It is strictly forbidden to run the empty pump. . When the pump reaches normal speed, (3) Observe the pressure index of the pump. (4) When the pump installation position has suction lift requirements, the inlet pipe and pump cavity of the pump should be filled with materials. (5) When the technological process requires heating or cooling of the medium, the heating or cooling device should be turned on before the pump is turned on, and half of the heating energy is turned on 10 minutes in advance, and then the pump is turned on. (6) Equipped with a cooling water mechanical seal pump, the cooling water must be turned on before starting the machine, and ensure that there is no interruption of flow after starting the machine, otherwise the mechanical seal will be damaged immediately.
2. Run (1) During the operation of the pump, attention should be paid to the power of the motor and the operation of the pump. If there is an abnormality, the pump should be stopped to find the cause. (2) The mechanical seal should be free of leakage and heat generation. (3) For pumps with packing seals, 1 to 3 drops per minute are allowed. If the leakage increases, the material ring can be pressed slightly without disassembly. (4) When using a mechanical CVT, adjust the speed step by step according to the rotational speed displayed by the numbers after starting the machine. It is strictly forbidden to rotate the speed control disc when the machine is stopped, otherwise the stepless reducer will be damaged. (5) Two methods of manual frequency regulation and automatic control can be used for speed regulation by frequency converter. (6) Always check the heating of the pump and motor. When the pump is in the state of water cooling, the bearing temperature rises to 40 °C. When the pump is in the state of hot water insulation, the temperature of the bearing seat is allowed to be 30°C higher than the temperature of the pump body. (7) The flow rate cannot be adjusted with the valve of the inlet pipeline to avoid the vibration of the pump caused by cavitation. (8) When the pump is running, it is strictly forbidden to close all the inlet and outlet valves.
3. Stop (1) Stop the pump and close the inlet and outlet valves to discharge and clean up the easily condensed materials. (2) After the pump is out of use for a long time, the coupling should be turned by hand before it is activated. And pay attention to identify whether there is friction and foreign matter in the pump. (3) When the pump and the geared motor are re-installed, the coaxiality of the pump shaft and the motor shaft should be checked, and the outer circle of the coupling should not exceed 0.1mm, otherwise it will cause vibration of the pump and affect the Spindle life.
