Start-up and shutdown sequence of the water circulation vacuum pump
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I’m asking the experts here: what is the sequence for starting and stopping a water circulation vacuum pump?
First, start the circulating water, then start the vacuum pump; once a certain level of vacuum is achieved, activate the vacuum at the equipment side. When shutting down, first close the valve on the equipment side, then turn off the vacuum pump, and finally shut off the circulating water.
1) Start: Turn on the motor, open the cooling water valve and the system air intake valve; the vacuum pump will then begin to operate, and the valve at the equipment side should be opened slowly. The system enters operational mode. 2) Shutdown: Close the valve on the equipment side, stop the drive motor of the vacuum pump, and close the suction valve to ensure the specified starting condition. Close the cooling water valve.
Excuse me, is there any animated diagram of a vacuum pump? Thank you
When I first entered the chemical industry, the first piece of equipment I worked with was a vacuum pump; seeing that topic felt very familiar to me
For the seal flushing water of the vacuum pump equipment we used in the past, first use the working fluid to get the process running; open the exhaust valve, increase the intake valve opening, and close it. Then start the motor and let it run for a while while monitoring the vacuum gauge; gradually increase the intake valve opening. When shutting down, simply close the intake valve and stop the motor. In winter, blow out the water from inside the pump, the cooler, and the working fluid tank
Some materials can affect the quality of the working fluid, resulting in insufficient vacuum in the tower and thus requiring more replacement