Semiaxis type pure-water hydraulic axial plunger pump supported by bearings in cylinder

Abstract

The invention relates to a semiaxis type pure-water hydraulic axial plunger pump supported by bearings in a cylinder, which adopts a semiaxis type structure that a sliding bearing supports a cylinder body. The semiaxis type pure-water hydraulic axial plunger pump is characterized in that a front bearing supports an input shaft, and a rear bearing is the sliding bearing in the cylinder and is used for supporting the cylinder body. Due to reasonable bearing distribution, the stressing of the bearings is reduced, and the overturning moments of flow distribution discs are balanced. A distributed type return spring penetrates through the cylinder body and acts on a spherical hinge and a floating lining plate respectively, so that not only is the sealing of a sliding shoe pair and a flow distribution pair guaranteed, but also the abrasion of sliding shoes and the flow distribution discs can be automatically compensated. The flow distribution discs are fixedly arranged on a rear end cover and are sealed by adopting sealing rings so as to avoid leakage of the back surfaces of the flow distribution discs. A plunger pair adopts an automatic gap-compensating type sealing structure so as to reduce leakage of the plunger pair and improve the anti-pollution capability of the pump. The semiaxis type pure-water hydraulic axial plunger pump adopts filtered fresh water or seawater as a working medium, adopts all-water lubrication for all friction pairs, is high in power density, can be used for industrial cleaning, seawater freshening and underwater operation tools and the like and is wide in application prospect.

Description

technical field [0001] The invention relates to a half-shaft pure water hydraulic axial plunger pump supported by a bearing in a cylinder, which can be used as a power element in a pure water hydraulic transmission system and belongs to the technical field of fluid transmission and control. Background technique [0002] Pure water hydraulic technology is a new technology that uses natural fresh water or sea water instead of mineral oil as the working medium of the hydraulic system. In recent years, based on the increasing emphasis on safety and sanitation, energy conservation, environmental protection and ocean development, the research on pure water hydraulic technology has become a frontier research topic in the international hydraulic industry. Compared with hydraulic transmission using other types of media, pure water hydraulic transmission has the following advantages: [0003] (1) Non-combustible, non-polluting, rich in resources and low in price; [0004] (2) The co...

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Problems solved by technology

[0013] In order to overcome the disadvantages of existing pure water hydraulic plunger pumps, such as difficult processing, poor anti-pollution ability, and easy failure of sliding bearings, provide high-pressure water with sufficient pressure and flow for pure water hydraulic transmission systems.

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