Magnetic compensation floating side plate combination piece

Abstract

A magnetic compensation floating side plate combination piece comprises an inner side plate (5), an outer side plate (6), an arc-shaped high-pressure oil groove (1), an unloading groove (2), an arc-shaped groove (3) and an arc-shaped through hole (4). The arc-shaped high-pressure oil groove (1) and the unloading groove (2) are located in a reverse thrust face (P) of the inner side plate (5), the arc-shaped groove (3) is located in a compensation face (Q) of the inner side plate (5), the arc-shaped through hole (4) is located in the outer side plate (6), and the inner side plate (5) and the outer side plate (6) are mutually embedded and positioned. The arc-shaped groove (3) and the arc-shaped through hole (4) are the same in shape, and magnetic strips are embedded into the arc-shaped groove (3) and the arc-shaped through hole (4). According to the magnetic compensation floating side plate combination piece, the magnetic force generated by repelling of the same magnetic poles of the magnetic strips serves as compensation force to achieve rapid compensation, the deformation condition, caused by high-pressure oil on the back faces of flotation side plates, of a sealing ring is improved, the problems that existing gear pump flotation side plates are seriously abraded and the compensation effect is not ideal are solved, and the magnetic compensation floating side plate combination piece is especially suitable for serving as an axial sealing device of a gear pump under the high-temperature, high-pressure and high-speed working conditions.

Description

technical field [0001] The invention relates to the technical field of hydraulic pump sealing, belongs to a component of an external gear pump, and in particular relates to a magnetic compensation floating side plate assembly. Background technique [0002] Gear pump is a kind of hydraulic power component for pumping oil. Because of its compact structure, good meshing performance and high bearing capacity, it is widely used in high-pressure and large-displacement hydraulic systems. In order to reduce internal leakage, reduce oil trapping, and keep the volumetric efficiency of the gear pump unchanged during long-term operation, most high-pressure gear pumps are equipped with a floating side plate between the gear and the cover plate to reduce the pressure on the high-pressure side of the front side plate. The oil is led to the arc-shaped sinking groove on the back of the side plate through the main unloading groove, so that the hydraulic pressure acting on the back of the side...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of the existing gear pump floating side plate such as wear and unsatisfactory compensation effect which affects the working performance of the gear pump, and to provide a magnetically compensated floating side plate assembly with simple structure, fast compensation and long service life.

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