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Shaft face mechanical seals for rotating machinery

A technology of mechanical seals and rotating machinery, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of complex structure, inconvenient disassembly and assembly, etc., achieve low friction, reduce requirements, eliminate axial force inconvenience. The effect of equilibrium

Active Publication Date: 2019-05-24
SHENYANG ANTI CORROSION ALLOY PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of complex structure, inconvenient disassembly and assembly of the end face mechanical seal in the prior art, this application provides a shaft face mechanical seal applied to rotating machinery

Method used

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  • Shaft face mechanical seals for rotating machinery
  • Shaft face mechanical seals for rotating machinery
  • Shaft face mechanical seals for rotating machinery

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] In order to solve the defects in the prior art, the present invention provides a shaft surface mechanical seal applied to rotating machines, the shaft surface mechanical seal includes a static ring 20, an elastic sealing body 30 and a housing 40; wherein the static ring is sleeved on On the outer peripheral surface of the main shaft of the rotating machine, the elastic sealing body 30 is sleeved on the outer peripheral surface of the static ring 20, the elastic sealing body 30 is placed in the housing 40, the outer peripheral surface of the elastic sealing body 30, the outer peripheral surface of the housing 40 The inner surface of the radial end and the inner surfaces of the two side wa...

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Abstract

A shaft surface mechanical seal applied to rotating machinery. The shaft surface mechanical seal comprises a stationary ring (20), an elastic sealing body (30), and a housing (40), wherein the stationary ring is fitted over the outer peripheral surface of a main shaft of the rotating machinery; the elastic sealing body is fitted over the outer peripheral surface of the stationary ring, and is disposed inside the housing; the outer peripheral surface of the elastic sealing body, the inner surface of a radial end of the housing, and the inner surfaces of two side walls of the housing form a sealed spare pressure cavity. The spare pressure cavity is communicated with a pressure applying device by means of a conveying pipe; a portion of the stationary ring positioned in the radial direction is disposed within the housing. The shaft surface mechanical seal realizes shaft sealing of rotating machinery by using a relatively simple structure that can be easily assembled and disassembled. Moreover, a velocity gradient value between friction surfaces is a fixed value, and therefore the friction is low.

Description

technical field [0001] The invention relates to the field of mechanical seals, in particular to a shaft surface mechanical seal applied to rotating machines. Background technique [0002] At present, rotating machines with rotating parts usually use face mechanical seals. The end face mechanical seal is a shaft sealing device applied to rotating machines, such as centrifugal pumps, centrifuges, compressors and other equipment. In rotating machinery, since the transmission shaft usually runs through the inside and outside of the equipment, there is a circumferential gap between the transmission shaft and the equipment, and the medium in the equipment may leak out through this gap. If the internal pressure of the equipment is lower than atmospheric pressure, the air is very May infiltrate into the equipment, therefore a shaft seal must be provided to prevent leakage or infiltration. [0003] Unfortunately, the structure of the end face mechanical seal is complex and inconven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/18F16J15/34
CPCF16J15/34
Inventor 白明
Owner SHENYANG ANTI CORROSION ALLOY PUMP