发明授权
- 专利标题: Flow control valve
- 专利标题(中): 流量控制阀
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申请号: US390833申请日: 1982-06-22
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公开(公告)号: US4435134A公开(公告)日: 1984-03-06
- 发明人: Akio Okada , Tokifumi Nakata , Kiyoshi Nemoto
- 申请人: Akio Okada , Tokifumi Nakata , Kiyoshi Nemoto
- 专利权人: Akio Okada,Tokifumi Nakata,Kiyoshi Nemoto
- 当前专利权人: Akio Okada,Tokifumi Nakata,Kiyoshi Nemoto
- 主分类号: F04B49/22
- IPC分类号: F04B49/22 ; F04B23/06 ; F04B41/06
摘要:
A discharge flow control rate valve for a multiple cylinder type reciprocating pump has a flow rate control valve associated with two cylinders of the pump. The flow control valve has a bypass passage connecting the suction side of the pump with a stepped cylinder chamber provided in the body member of the control valve. A needle valve fitted with a separate valving element is reciprocably disposed in the stepped cylinder chamber and operates to return a part of the fluid in the first cylinder or in the first and second cylinders to the suction side of the pump as a function of the intrusion distance of the valve into the cylinder chamber so as to modify the overall discharge flow rate of the pump.
公开/授权文献
- US5594654A Beneficial insect counting and packaging device 公开/授权日:1997-01-14