Hinged valve flow distribution plunger pump

Abstract

The invention belongs to the technical field of plunger pumps, and particularly discloses a hinged valve flow distribution plunger pump. The plunger pump comprises a rear cover, wherein a shell cover and a bearing disc are fixedly mounted at the upper end of the rear cover, the bearing disc is located on the inner side of the shell cover, a swing disc is connected to the position, close to the top, of the inner side of the shell cover through a swing assembly, a spindle is rotationally mounted at the center of the upper end of the rear cover, the upper end of the spindle penetrates through the bearing disc and the swing disc in sequence, the upper end of the spindle movably penetrates through the internal top end of the shell cover, and an eccentric wheel is fixedly connected to the portion, close to the top, of the outer wall of the spindle and located at the center of the inner side of the swing disc. Compared with a traditional plunger pump, an oil cylinder is omitted, a two-plunger nesting mode is adopted, the structure is simplified, the two ends of a plunger assembly are hinged, no radial force exists between plungers, performance is good, abrasion is reduced, the service life is prolonged, meanwhile, the number of rotating parts is small, rotational inertia is small, the requirement on oil film lubrication is low, reliability is high, and stability is good.

Description

technical field [0001] The invention belongs to the technical field of plunger pumps, and specifically discloses a hinged valve-distribution plunger pump. Background technique [0002] Piston pumps are suitable for occasions that require continuous delivery of liquids. Piston pumps are widely used in high-pressure and hydraulic systems. They have the advantages of high rated pressure, high efficiency, long life, and light weight per unit power. According to the different arrangements of the plunger in the cylinder, the plunger pump is divided into a radial plunger pump and an axial plunger pump. Due to its complex structure and large volume, radial piston pumps have been gradually replaced by axial piston pumps in many occasions. The traditional axial piston pump has complex structure, many friction pairs, serious wear, large moment of inertia, large centrifugal force and low reliability. When running at low speed, the oil film of the friction pair cannot be established, t...

AI Technical Summary

Problems solved by technology

The traditional axial piston pump has complex structure, many friction pairs, serious wear, large moment of inertia, large centrifugal force and low reliability

When running at low speed, the oil film of the friction pair cannot be established, the friction force and friction torque are large, and the running performance is not good

The plunger of the traditional axial piston pump is subject to a large lateral force, the friction between the plunger and the cylinder hole is large, the wear between the plunger and the cylinder hole is serious, and an overturning moment will be generated on the cylinder, which affects the mechanical performance of the pump. adversely affect

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