A double swash plate plunger pump

Abstract

The invention relates to the field of axial plunger pumps, in particular to a double-swash-plate plunger pump. The double-swash-plate plunger pump comprises a pump shell, a left end cover, a right end cover, a cylinder body and a transmission shaft; the left and right end covers are symmetrically provided with left and right swash plates correspondingly; the left and right swash plates are provided with left and right return stroke plates correspondingly; the left and right ends of the cylinder body are symmetrically provided with two sets of plunger pairs uniformly distributed on the cylinder body; the tops of plungers are in hinged connection with both left and right slipping boots on the return stroke plates; each pair of plungers share one suction valve; an open cavity is formed in the middle of the cylinder body; an extrusion assembly is also arranged in the middle of the cylinder body in a sleeving mode; liquid in the cavity can enter plunger cavities through the suction valves; and the plungers are driven to move when the transmission shaft rotates, the pressure of the plunger cavities is changed at the moment, and the liquid is pumped out by the extrusion assembly. The double-swash-plate plunger pump can meet the requirements for the small size and the large discharge capacity and also has the advantages of being capable of saving energy sources and reducing pollution, long in service life, easy to manufacture, suitable for mass production and the like.

Description

technical field [0001] The invention belongs to the field of axial plunger pumps, and more specifically relates to a double swash plate plunger pump, which can meet the requirements of small volume and large displacement, and can also reduce the existence of radial force during the operation of the pump And the wear of the rolling bearings, thereby prolonging the service life of the plunger pump. Background technique [0002] With the continuous improvement of the world's industrial level, modern hydraulic transmission technology is gradually developing towards integration and digitalization. More and more occasions require hydraulic power components with smaller volume, higher power, larger flow rate and longer life to complete the work. . In the current environment of energy saving and anti-pollution in the whole world, water hydraulic technology has become the "darling" of the hydraulic industry. Using water as a working medium can avoid wasting oil resources and avoid d...

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Problems solved by technology

[0003] However, further studies have shown that the axial piston pump using water as the working medium also has the following defects: (1) its displacement is strictly controlled by the size and quantity of the plunger, and the traditional distribution and flow distribution methods of the plunger cannot achieve a higher volume. (2) If water is used as the working medium in the axial piston pump without using a complicated oil-water separation structure, the life of the rolling bearing will be affected by the radial force during the operation of the pump. And seriously shortened, thus forcing the life of the axial piston pump to be reduced accordingly

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