Seal fresh water axial plunger hydraulic pump

Abstract

The invention relates to a seawater / freshwater axial plunger hydraulic pump that is belonged to positive displacement type pump. It decreases the attrition of working in seawater / freshwater medium and decreases the request to the attrition of the material. Plunger holes are equally set on the cylinder body. And the plunger and the plunger hole are sliding matched. The input shaft is installed on the carcass of the pump by supporting bearing. The end surface crankshaft is formed on the input shaft, and the sloping cam plate is installed at the crank of the end surface crankshaft by supporting bearing. The direction guiding location slider is installed outside the sloping cam plate that sliding matched to the direction guiding slide groove. The sloping cam plate is actively connected to the plunger. The universal ball pivot at one end is installed on the reference circle and the ball pivot at the other end is connected to plunger. The pump is tightly structure, light weight, stable capability, and large flux. It could be used as drive component of liquid transferring using seawater / freshwater and other low viscosity liquid or liquid driving system.

Description

technical field [0001] The invention belongs to positive displacement pumps, in particular to an axial plunger hydraulic pump, which is especially suitable for pumping medium and high pressure sea / fresh water and other low-viscosity liquids. Background technique [0002] At present, hydraulic systems widely used in various industrial sectors mainly use mineral oil as the working medium, which not only wastes oil resources, but also has the disadvantages of being flammable and polluting the environment. Therefore, hydraulic pumps that use sea (fresh) water instead of mineral oil as the working medium have been being developed internationally. The newly developed sea (fresh) water pumps at home and abroad mostly adopt end face flow distribution and sliding shoe / swash plate structure, or valve flow distribution and sliding shoe / swash plate structure. For example: the water medium hydraulic pump produced by Denmark Danfoss company and the sea (fresh) water hydraulic pump (motor...

AI Technical Summary

Problems solved by technology

Sliding shoe / swash plate structure plunger pump, the radial pressure of the plunger on the cylinder (cylinder liner) is large, the PV value acting on the friction pair of the plunger / cylinder (cylinder liner) is large, and the sea (fresh) water Strong corrosion and poor lubricity. Therefore, the friction pair of this structure cannot use general metal materials. It mainly uses engineering ceramics and other special engineering materials and special processing methods. It is difficult to select materials and process, and the production cost is high, which is not conducive to the production of this type of pump. Manufacturing and Promoting Applications

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