Mechanical sealing structure with flower and plant simulating fluid type groove end surfaces

Abstract

The invention discloses a mechanical sealing structure with flower and plant simulating fluid type groove end surfaces. The mechanical sealing structure comprises a mechanical sealing movable ring and a mechanical sealing stationary ring; one sides of the end surfaces of the movable ring and the stationary ring are high-pressure sides, i.e. advanced positions; the other sides of the end surfaces of the movable ring and the stationary ring are low-pressure sides, i.e. backward positions; the backward positions of the end surfaces are provided with circular sealing dams with smooth flat surfaces; the mechanical sealing structure is characterized in that a plurality of fluid type grooves, which are uniformly distributed along the circumference direction, are formed by drainage grooves, left profiled grooves and right profiled grooves centering around the drainage grooves and take the shape of flowers and plants in appearance, are arranged on at least one of the end surfaces of the movable ring and the stationary ring, the drainage grooves are radial grooves; the fluid type grooves are distributed on an annular belt in accordance with the centers of the end surfaces, the circular belt is arranged at the advanced positions of the end surfaces; and no slotting regions between the flower and plant simulating fluid type grooves form a sealing weir. The mechanical sealing structure has better fluid guiding effect; the pressures of the root regions of the fluid type grooves are higher and more uniformly distributed; and the bearing capacity of a seal and the rigidity of a fluid membrane are increased.

Description

technical field [0001] The invention relates to a non-contact end face sealing structure of a rotary fluid machine, in particular to a non-contact end face sealing device with a two-way rotating imitation flower-plant fluid groove end face mechanical seal structure, which is suitable for various compressors and pumps And the shaft end sealing device of the rotary shaft of the rotating machine such as the stirrer for the kettle. Background technique [0002] Shaft end seals (such as mechanical seals, packing seals, labyrinth seals, etc.) are indispensable basic components in various fluid machinery, power machinery and other rotating machinery. At present, the non-contact mechanical seal has become the preferred shaft end seal for high-parameter rotary fluid machinery due to its outstanding features and advanced performance such as non-contact, no wear, low energy consumption, high pressure resistance and high stability. Two-way rotatable end face seals have been reported, s...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of unsatisfactory start-up performance or low-speed and low-pressure performance of the seal existing in the existing bidirectional rotary groove end mechanical seal structure, and the limited bearing capacity and rigidity of the fluid film, the present invention provides a flower-like fluid type groove end mechanical seal sealed structure

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