| 摘要 |
<p>A high-pressure, plunger-type liquid pump (10) including a liquidmanifold (16) that includes a plunger chamber in the form of an axial cylindrical bore portion (24) for slidably receiving a pressurizing plunger (20), and that also includes a valve chamber (42) coaxial with the plunger chamber (24) and in communication therewith for removably receiving a cartridge-type flow control valve (72, 161). The liquid manifold (16) includes a closure plug (36) to close the valve chamber (42). The cartridge-type valve (72, 161) is slidably received in the valve chamber (42) for enabling removal of the cartridge-type valve (72, 161) from the liquid manifold (16) without the need for separating the liquid manifold (16) from the pump drive housing (12). The cartridge-type valve (72, 161) is of a structure that includes in-line, axially spaced suction (100, 176) and discharge (136, 162) valves that are each spring biased into closed positions. High-pressure liquid is confined within a valve housing body (72, 160) that contains the suction and discharge valves, to minimize damage to the liquid manifold (16) as a result of pressure fluctuations and high-pressure flows. The cartridge-type valve (72, 161) is removable from the manifold (16) without the necessity of removing or even separating the manifold (16) from the pump drive housing (12).</p> |
