Pure water hydraulic axial plunger pump / motor by total water lubrication

Abstract

The present invention discloses one kind of completely water lubricated pure water hydraulic axial plunger pump / motor, which adopts filtered natural water, including fresh water and sea water, as work medium and consists of mainly one casing and one rotary cylinder inside the casing. The cylinder has odd holes parallel to the driving / outputting shaft and distributed in the same circle; plunger sliding shoe assembly with plunger inside the cylinder holes, flow distributing sleeve and floating thrust disc inside corresponding hole, center spring with one end holding the flow distributing disc and the other end holding the sliding shoe to the inclined disc, and driving / outputting shaft interference fitted to the cylinder. The device of the present invention has all the friction pairs lubricated and cooled with water, and has small radial size, small volume, light weight and great specific power.

Description

Technical field

[0001] The invention relates to an energy conversion device in hydraulic transmission, in particular to a fully water-lubricated pure water hydraulic axial plunger pump / motor. Background technique

[0002] Pure water hydraulic transmission technology uses filtered natural water (including seawater and fresh water) as the hydraulic medium, which has the advantages of cleanness, no pollution, and no fire hazard. In the past ten years, the development of new materials, the progress of processing technology and the successful development of hydraulic components with new structures have overcome the shortcomings of early hydraulic transmissions such as easy corrosion, easy wear, large leakage, and low efficiency, making pure water hydraulic transmission The technology has made great progress, and it has begun to widely enter the industrial application fields such as food, paper making, textile, medical equipment, fire protection, metallurgy, mining, nuclear power ...

Examples

Embodiment Construction

[0020] like figure 1 , figure 2 As shown, the present invention consists of a shell (including a left end cover 6, a right end cover 16, and a housing 7) and a rotatable cylinder 20 installed in the shell. Cylinder holes parallel to the axis of the cylinder body 20 are evenly distributed on the same circumference of the cylinder body 20. The plunger 10 of the plunger shoe assembly is placed in the cylinder hole, and the inner wall of the cylinder hole is injected with engineering plastics and the plunger 10 of stainless metal material. Dubbed as a plunger pair. On the right side of the cylinder block 20 is the thrust plate 14 . The central spring 11 placed in the center of the cylinder body 20 compresses the sliding shoe 9 and the swash plate 8 of each plunger shoe assembly through the cylinder body, the ball joint 22 and the return plate 23 . The other end of the central spring 11 presses the thrust plate 14 to the flow plate 15 by pressing the plastic rod 19 . The thrus...

Technical field

[0001] The invention relates to an energy conversion device in hydraulic transmission, in particular to a fully water-lubricated pure water hydraulic axial plunger pump / motor. Background technique

[0002] Pure water hydraulic transmission technology uses filtered natural water (including seawater and fresh water) as the hydraulic medium, which has the advantages of cleanness, no pollution, and no fire hazard. In the past ten years, the development of new materials, the progress of processing technology and the successful development of hydraulic components with new structures have overcome the shortcomings of early hydraulic transmissions such as easy corrosion, easy wear, large leakage, and low efficiency, making pure water hydraulic transmission The technology has made great progress, and it has begun to widely enter the industrial application fields such as food, paper making, textile, medical equipment, fire protection, metallurgy, mining, nuclear power ...

Examples

Embodiment Construction

[0020] like figure 1 , figure 2 As shown, the present invention consists of a shell (including a left end cover 6, a right end cover 16, and a housing 7) and a rotatable cylinder 20 installed in the shell. Cylinder holes parallel to the axis of the cylinder body 20 are evenly distributed on the same circumference of the cylinder body 20. The plunger 10 of the plunger shoe assembly is placed in the cylinder hole, and the inner wall of the cylinder hole is injected with engineering plastics and the plunger 10 of stainless metal material. Dubbed as a plunger pair. On the right side of the cylinder block 20 is the thrust plate 14 . The central spring 11 placed in the center of the cylinder body 20 compresses the sliding shoe 9 and the swash plate 8 of each plunger shoe assembly through the cylinder body, the ball joint 22 and the return plate 23 . The other end of the central spring 11 presses the thrust plate 14 to the flow plate 15 by pressing the plastic rod 19 . The thrus...

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