Blower outlet pressure when the blower is turned off
Thread Content
Hello, experts. When a blower used in an aeration tank stops operating suddenly due to a fault or some other reason, what will be the pressure in the blower’s outlet pipeline? Could there be a backflow of water in the aeration tank?
This definitely needs to be calculated by a professional mechanics expert
It will become at normal pressure; what else would it be? The suction inlet of the aeration blower is connected to the atmosphere.
Firstly, the water level in the aeration tank is lower than that of the aeration fan, so wastewater cannot flow back. It can be said that backflow is only possible when the height of the liquid flowing into the pipe is equal to the water level in the aeration tank. Let’s take a look at the flowchart instead.
Generally, there is a check valve at the fan outlet to prevent the water phase from flowing back. As long as no siphon effect occurs, there will be no backflow of water.
The shutdown of the aeration tank blower is part of normal operation; such a shutdown does not create negative pressure, nor does it cause backflow