| 摘要 |
PURPOSE: A booster pump with a storage chamber is provided to rapidly supply working fluid pneumatically in a low pressure interval and operate the pump only in a high pressure interval to save energy. CONSTITUTION: A booster pump with a storage chamber includes a preliminary storage room(30a), a pump piston(4), a pump moving back working chamber(20b), a pump advance working chamber(20a). The preliminary storage room is formed in front of the booster pump and between an overflow bore(3) and a booster rod(2). The pump piston is supported by a compressed spring(45). A check valve spool is supported by the compressed spring within the pump piston between the pump advance working chamber and the pump moving back working chamber. When the pump piston is moved back, the check valve spool and pump cover come into contact with each other such that the check valve spool advances. The pneumatic passage of the pump advance working chamber and pump moving back working chamber is blocked. When air pressure is provided to the pneumatic passage(20), the pump piston advances.
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