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2 Suction lift system:
A baffle is set in the lower level in the reaction
tank. The top of the suction port tube is posi-
tioned under the baffle so that bubbles are not
sucked in together with the liquid.
When strong acid liquid is fed into the reaction tank or such liquid is circulated through narrow tubing,
bubbles are generated. If such bubbles are mingled in the liquid that is sent to the bellows, the system is
put into a state of air locked operation. As a result, the stroke speed increases and smooth liquid feeding
is impacted.
For safe and efficient circulation and feeding of liquid, it is necessary to carry out air elimination and take
proper safety measures.
2.2.3 Air elimination measures
When air enters the bellows and the pump is air locked, the pump stroke speed increases. If the increase is excessive,
that is, higher than the specified pump stroke speed, stop the pump or carry out air elimination.
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Plan "A"(Flooded suction system)
[1] Plan A (Bubbles are blocked by means of baffle-
board)
1 Flooded suction system:
A baffle is set in the overflow tank to separate the
bubbles from the liquid, thus eliminating the air
content.
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Plan "A" (Suction lift system)
Bubbles go up.
Baffle
Overflow
tank
P
Reaction tank
Reaction
tank
Bubbles are
sucked.
Baffle
Prevents sucking up of
bubbles.
P
P
