Regarding the drainage issue of the air-water separation tank in the filtration vacuum machine
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This is the overall diagram of the filtration vacuum machine. The large tank at the bottom is the gas-liquid separation tank, while the smaller tank next to it is a water storage tank used for draining water; currently, due to excessive negative pressure, the water cannot be drained from it. Do any experts have any solutions! (The water storage tank has pipes that connect to the atmosphere, as well as pipes that connect to vacuum tubes.)
Is it possible to cut out the small container separately, drain the water from it, and then use it after the water has been removed?
It was designed by this design institute... :L, what else can be said? It’s a technology that was mature over a decade ago – and yet it’s still in such a poor condition… All that’s needed is to install high, very high, low, and very low liquid level controls on the separator, along with a side tank pump, and the liquid can be easily drained away……
Yes! When it was installed back then, this issue was already mentioned: the large tank and the small tank have the same height, and now it’s impossible to make any changes; the water inside can’t be drained
Close the small tank drain manual valve and the vent manual valve; open the bottom connection control valve and the top connection manual valve. The principle of a communicating vessel with large and small containers ensures that the liquid levels are at the same height. Close the aforementioned bottom connection control valve and the top connection manual valve. Open the small tank drain manual valve and the vent manual valve. Break vacuum for sewage discharge. It can cut water, but it’s a bit troublesome.
Add another pump for pumping at the drainage area……
I’ve tried doing this before; it’s too troublesome, and the water in the large tank still can’t be drained completely.
Can negative pressure be used for pumping? It seems that the cavitation head of the centrifugal pump is not sufficient; should a positive displacement pump be used instead?
Can the control valve between the large and small tanks adjust properly? It seems there is no pressure difference between the upstream and downstream sides
At the very least, it should work; if you don’t want any hassle, then you just have to pay more money. 1. Install a volume pump at the bottom of the large tank, add a few more check valves, and use that to drain water directly. 2. Replace the valves mentioned earlier with control valves, so that the process can be automated. 3. Add pneumatic actuators – all one needs to do is turn them a few times, which isn’t difficult; it’s just that more parts are required
I am more interested in filtration vacuum machines. Is there any information on that?