Q:What should I pay attention to when using a vacuum pump?
A: The water ring vacuum pump we are using must pay attention to adjusting the inlet valve of the vacuum pump. The valve here cannot be fully opened like other valves, and of course it cannot be fully closed. In order to make the vacuum pump always have some water, but not full of water, it can play the role of “water ring” pumping and gas compression. In addition, it is necessary to pay attention to closing the non-starting pump and the flushing pipe and other places, which will affect the water pumping valve of the vacuum pump; to prevent the vacuum pump and the shaft seal of the pump being pumped out. Stop the vacuum pump in time after turning on the water machine.
Q:What problems should I pay attention to when filling the pump?
A: For small pump irrigation with bottom valve, check whether the bottom valve of the pump is closed tightly and whether it is sucked open. When filling the water, open the exhaust valve to vent the air; do not irrigate the water so that the air in the pump body cannot be drained smoothly. The air inside the suction pipe is exhausted.
A low-position centrifugal pump without a bottom valve can be driven by opening the exhaust valve on the pump body to exhaust the gas in the pump body. However, in the case that the car has not been opened for a few times, the air mass may enter the pipeline, and the sewage pump needs to open the exhaust valve for a while, but cannot be seen when the exhaust valve is out of the water. Drive. It is necessary to let it go through the repeated process of exhausting, draining, re-venting, and draining until it is no longer exhausted.
Q:What problems should I pay attention to when operating the water switch when starting the water machine?
A: When starting the water machine, the main problem that should be paid attention to in the operation of the electrical switch is that the large and medium-sized pumps can not start the water machine directly with the load, but should pay attention to close the operation of the small switch or close the knife switch. Close the oil switch with the arc extinguishing performance or the main start switch; the opening and closing should be in place, and there is no coincidence to coincide. In addition, when pulling and closing the switch and pressing the button, first confirm the machine number of the required operation, and consider the operation method; the action during the specific operation should be decisive, rapid, and one step in place.
Q:After the water machine is turned on, what should the duty officer patrol?
A: After the water machine is turned on, the main contents to be inspected by the duty officer are: current, voltage, shaft seal, water pressure, vacuum, water level, sound, vibration, stringing, flow, oil quality, oil quantity, bolt, foundation, Pipelines, valves, etc. In addition, human factors or non-human factors that may affect the safe operation of the water machine inside and outside the machine room should also be inspected.
Q:From what aspects can you judge whether the water in the centrifugal pump is still water?
A: It can be judged from the following aspects:
1. Look at the ammeter indication;
2. View the water level or flow condition of the suction well;
3. View the vacuum gauge and pressure gauge of the inlet and outlet;
4. Touch the hand and try to see if the pump body has warmed up;
5. Whether the sound of the ear pump is normal;
6. See if the water flow is normal.
