Bilaterally rotary gas lubrication non-contact mechanical seal device

A mechanical sealing device and gas lubrication technology, applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of poor sealing effect, low bearing capacity, small use range, etc., to achieve good sealing, strong bearing capacity, Use a wide range of effects

Inactive Publication Date: 2010-11-24
天津赛锐特密封技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing sealing devices have technical problems such ...

Method used

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  • Bilaterally rotary gas lubrication non-contact mechanical seal device
  • Bilaterally rotary gas lubrication non-contact mechanical seal device
  • Bilaterally rotary gas lubrication non-contact mechanical seal device

Examples

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Embodiment 1

[0029] A gas-lubricated non-contact mechanical seal device that can rotate in both directions, including a sealing chamber, a moving ring, a static ring, a sealing ring, an elastic element, a push ring, and a fixed assembly; In the sealed space, the sealing chamber 3 is placed in the casing 2 of the rotating machine, and the rotating shaft 1 passes through the hole of the sealing chamber 3; the fixing assembly 10 fixes the moving ring 5 on the rotating shaft 1, and the static ring 4 and the moving ring 5 fit, the elastic element 6 is located between the sealing cavity 3 and the push ring 7, the push ring 7 is attached to the back of the static ring 4, and the static ring 4 and the moving ring 5 are attached to each other under the elastic force of the elastic element, The two mating surfaces are sealing end faces, and the sealing ring 9 is installed between the static ring 4 and the push ring 7 to prevent the sealed fluid from leaking through here; the cylindrical pin 8 fixed o...

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Abstract

The invention relates to a bilaterally rotary gas lubrication non-contact mechanical seal device, belonging to the technical field of mechanical seal. In the utility of the invention, a seal cavity is arranged in a rotating machinery shell, a rotating shaft passes through a hole on the seal cavity, a fixed component fixes a moving ring on the rotating shaft, and a stationary seal ring is glued with the moving ring; the mechanical seal device of the invention is characterized in that the seal cavity is provided with an elastic element and a thrust ring, wherein the elastic element is positioned between the seal cavity and the trust ring; the thrust ring is glued with the back face of the stationary seal ring, the stationary seal ring and the moving ring are glued with each other under the action of elastic force of the elastic element, and the two gluing faces are sealed end faces; the seal end face of the moving ring or/and the stationary seal ring is provided with slot groups which are distributed along the peripheral direction of the seal end face; and each slot group is composed of a radial air supply slot and a dynamic pressure slot which are distributed on the left and right sides of the air supply slot. The invention has the advantages of simple structure, compact assembly, good tightness, strong carrying capacity, convenient manufacture, bilaterally rotary seal, wide application range and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical seals, in particular to a bidirectionally rotatable gas lubricated non-contact mechanical seal device. Background technique [0002] At present, there are two-way rotatable spiral groove end face seals, such as Chinese patent 98218316.X "double-row double-leaf spiral groove end face seal capable of bidirectional rotation", 01102213.2 "bidirectionally rotatable spiral groove end face seal device", US patent 5090712, etc. They all have a dynamic pressure groove on at least one of the sealing end faces of the rotating ring (referred to as the dynamic ring) and the sealing end face of the stationary ring (referred to as the static ring) that are attached to each other. The geometry of the dynamic pressure groove is the core technology of the above invention. When the rotating shaft of the rotating machine drives the moving ring fixed on it to rotate, due to the fluid dynamic pressure effect of the ...

Claims

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Application Information

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IPC IPC(8): F16J15/16F16J15/34F16J15/40
Inventor 杨惠霞
Owner 天津赛锐特密封技术有限公司
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