Mechanical seal end face structure of imitated grinding disc texture

Abstract

A mechanical seal end face structure of imitated grinding disc texture comprises a movable ring and a fixed ring which are in mechanical seal; one side of each of the movable ring and the fixed ring serves as the high-pressure side, that is the upstream side, the other side of each of the movable ring and the fixed ring is the low-pressure side, that is the downstream side, multiple streamline grooves of the imitated grinding disc surface texture are evenly distributed in the end face of at least one seal ring of each of the movable ring and the fixed ring in the circumferential direction, composed of foundation movable pressure grooves and flow guide grooves, and gradually narrowed from upstream to downstream and become shallow in depth; the foundation movable pressure groove are arranged in parallel in a multi-row manner, and the grooves are partitioned by sealing weirs with the equal depth; the flow guide grooves penetrates the foundation movable pressure grooves, and seal dams are arranged on the downstream portions of the streamline grooves; through the convergent structure of the imitated grinding disc texture, the higher flow guide effect is achieved, and leakage is reduced while the end fluid movable pressure effect is improved.

Description

Technical field [0001] The invention belongs to the technical field of end face mechanical seal structure design, and particularly relates to a deep end face seal structure compounded by a diversion groove and a plurality of basic dynamic pressure grooves, which is suitable for shaft ends of various industrial pumps, kettles and other rotating machinery. Seal transposition, suitable for liquid lubricated mechanical seals with medium and low speeds. Background technique [0002] Mechanical seal is the most commonly used rotary shaft seal in fluid machinery. Because of its good sealing performance, less leakage, and relatively low frictional power consumption, it has been widely used in various chemical equipment, but because it has a pair of direct contact Friction of the end face results in a short life span, especially under harsh conditions such as high temperature and high pressure. In order to prolong the life of ordinary mechanical seals, people have developed a way to impr...

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Problems solved by technology

[0003] In order to overcome the shortcomings of short seal life, poor start-stop effect and limited bearing capacity of the fluid film on the end face mechanical seal structure, the present invention provides a mechanical seal with good hydrodynamic pressure effect and can reduce end face wear, while extending the mechanical seal. Mechanical seal end face structure imitating grinding disc texture

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