Sea water pump plunger pair

Abstract

The invention discloses a sea water pump plunger pair which comprises a plunger cylinder sleeve (1), a sealing socket (2), a sealing socket end cover (3), a plunger (4),a water inlet valve (5) and a water outlet hole (6), wherein the end part of one end of a containing cavity (7), which is provided with the plunger (4), is provided with the sealing socket (2); the sealing socket (2) is provided with a plunger hole; the inner sides of two ends of the sealing socket (2) are provided with sealing slots; a step seal (8) is arranged in each sealing socket; an O-shaped sealing ring (9) is arranged between the outer wall of the sealing socket (2) and the inner wall of the plunger cylinder sleeve (1); and the inner wall of the plunger hole of the sealing socket (2) and the inner wall of the containing cavity (7) of the plunger cylinder sleeve (1) are provided with one layer of anti-attrition sleeve (12). The sea water pump plunger pair has the beneficial effects that the problem that plunger pull and abrasion can be solved, the service life of the plunger pair is prolonged, the dynamic sealing problem of ultra-high pressure is solved by a seepage-proof channel, the sealing performance of the plunger pair is improved, and leakage is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of hydraulic components, in particular to a seawater pump plunger pair. Background technique [0002] The plunger pair is the key part of the plunger pump, and the plunger reciprocates in the plunger cavity to complete the process of water absorption and drainage. The current plunger pair generally includes a plunger, a plunger sleeve, a spring, and two spring seats. The plunger sleeve is provided with an oil chamber. One of the two spring seats is fitted on the outer circumference of the plunger, and the other is installed On the outer circumference of the plunger sleeve, the two ends of the spring respectively abut against the two spring seats, and the plunger slides with the plunger sleeve under the action of oil pressure, and is reset by the spring, and the end of the plunger sleeve A water inlet is provided, and a water outlet hole is arranged on the side of the plunger sleeve, and the water inlet and ...

AI Technical Summary

Problems solved by technology

The existing water inlet valve or water outlet valve usually adopts a flat valve, which has poor sealing effect and cannot adapt to high-pressure working conditions, and the existing plunger is set in the plunger sleeve, which directly rubs against the plunger, causing serious wear and short service life; the existing The seal of the plunger generally adopts a gap seal, which allows a certain amount of leakage, resulting in low volumetric efficiency; the problem of ultra-high pressure dynamic sealing has not yet been resolved

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