To damp pulsation by using an adjusting mechanism by releasing pressure of an air chamber to atmospheric pressure, by using the vertical movement of bellows for dividing a pulsation damping device into one compressed gas inflow control valve mechanism, a liquid chamber and the air chamber, since the pulsation generated when transferring liquid by a reciprocating pump, becomes a hindrance when providing an excellent quality when performing various works (cleaning and etching) by using a transfer liquid, that is, it is important that the pulsation is little and a flow rate and liquid pressure of the liquid are constant for the transfer liquid.
This device has the same effect as a valve by the vertical movement of the bellows, by dividing the air chamber into a first air chamber into which compressed air enters and a second air chamber communicating with the atmosphere, by arranging a seal part in the bellows, and arranging a cam part on an inner surface of a body case.
| JPH04128573 | HYDRAULIC PUMP |
| JP2014105621 | HYDRAULIC DEVICE |
| JP7403302 | pump equipment |
HARADA KAORU
SASAJIMA TAKAMITSU
HONMA KYOKO
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