Reciprocating pump
AssigneeMaruyama Mfg. Co., Inc.
InventorToshiro Nakanishi
Life of this patent
Estimating the term…
Abstract
An objective is to provide a reciprocating pump kept from lowering its performances, while restraining the cost from increasing. Collars 14, 20, 21 made of a material more excellent in resistance to corrosion than a manifold 3 are interposed between the manifold 3 and sealing members 10, 22, 23 for liquid-tightly sealing the manifold 3, so as to prevent the parts in contact with the sealing members 10, 22, 23 from being corroded by a liquid for use, and fully exhibit sealing functions, thereby preventing leakage from occurring in a pump chamber 4 and the pressure oscillation from being increased by the leakage, while the collars 14, 20, 21 made of the material excellent in resistance to leakage are used only in the parts in contact with the sealing members 10, 22, 23.
Claims20
A reciprocating pump comprising a sealing member for liquid-tightly sealing the inside of a manifold, wherein a reciprocating member performs a pumping action for sucking a liquid for use into the manifold and discharging the liquid therefrom by reciprocating;
- a collar made of a material having a higher resistance to corrosion than the manifold is liquid-tightly attached to an inner face of the manifold;
- and
- the sealing member is liquid-tightly in contact with the collar.
A reciprocating pump comprising:
- a manifold having a pump chamber and a channel that connects the pump chamber and the exterior;
- a plunger, mounted in the pump chamber, that reciprocates therein for sucking a liquid into the manifold and discharging the liquid therefrom through the channel;
- a collar, made of a material having a higher resistance to corrosion than the manifold, that is liquid-tight and provided on a part of the side wall of the pump chamber;
- and
- a sealing member, provided between the collar and the plunger, for providing a liquid-tight seal.
A reciprocating pump comprising:
- a manifold having a pump chamber and a channel that connects the pump chamber and the exterior;
- a plunger, mounted in the pump chamber, that reciprocates therein for sucking a liquid into the manifold and discharging the liquid therefrom through the channel;
- a valve member provided in the channel;
- a collar, made of a material having a higher resistance to corrosion than the manifold, that is liquid-tight and provided on a part of the inner face of the channel;
- and
- a sealing member, provided between the collar and the valve member, for providing a liquid-tight seal.
Dependencies are inferred from the claim text.