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Cassette sealed structure

A sealing structure, box-type technology, applied in the direction of engine seals, shafts and bearings, bearing components, etc., can solve the problem of reduced sealing effect, and achieve the effect of increasing service life, not easy to wear, and good sealing effect

Active Publication Date: 2021-03-30
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a box-type sealing structure, which can overcome the problem that the sealing effect of the sealing structure including the labyrinth seal and the air seal in the prior art is reduced when the air seal loses its effect

Method used

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  • Cassette sealed structure
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] Such as Figure 1a to Figure 1c As shown, the box-type sealing structure 3 according to the first embodiment of the present invention is installed on the shaft 1 and the housing 2 which can rotate relatively, and the box-type sealing structure 3 is ring-shaped as a whole. In this embodiment, the box-type sealing structure 3 includes a skeleton (outer skeleton 31 and inner skeleton 32), a dustproof ring 33, a centrifugal lip 34 and an auxiliary lip 35, wherein the skeleton (outer skeleton 31) and the dustproof ring The space surrounded by 33 is the accommodation space.

[0035] In this embodiment, the frame includes an outer frame 31 and an inner frame 32 fixed to each other.

[0036]The outer frame 31 has an outer frame axial portion 311 extending along the axial direction A and an outer frame radial portion 312 extending radially inward along the radial direction R from the axially inner end of the outer frame axial portion 311 . The outer frame axial part 311 is fix...

no. 2 approach

[0057] Such as Figure 5 As shown, the difference between the cassette sealing structure 3 according to the second embodiment of the present invention and the cassette sealing structure 3 according to the first embodiment of the present invention is that the cassette sealing structure 3 has only one centrifugal lip 34 , Correspondingly corresponding to this one centrifugal lip 34 only is provided with the first centrifugal groove 333 of a circle (as Figure 7 shown); a gap is formed between the axial portion 311 of the outer frame and the housing 2 as an additional air containing space S3; the radial portion 312 of the outer frame has a structure bent axially outward.

[0058] Since one centrifugal lip 34 can achieve good static and dynamic sealing of pollutants on the axially outer side of the box-type sealing structure 3, in this embodiment, only one centrifugal lip 34 is provided on the inner frame radial portion 322 The lip portion 34 is correspondingly provided with only...

no. 3 approach

[0064] Such as Figure 9As shown, the difference between the box-type sealing structure 3 according to the third embodiment of the present invention and the box-type sealing structure 3 according to the first embodiment of the present invention includes the following differences described in the above-mentioned second embodiment: the outer skeleton A gap is formed between the axial portion 311 and the housing 2 as an additional air containing space S3; the radial portion 312 of the outer frame has a structure bent axially outward.

[0065] Additionally, if Figure 10 As shown, in this embodiment, the radial portion 332 of the dustproof ring is provided with a plurality of centrifugal grooves extending substantially along the circumferential direction in two turns. Each circle of centrifugal grooves includes a first centrifugal groove 333 and a second centrifugal groove 334 extending in opposite directions. One circumferential end of each first centrifugal groove 333 is locat...

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PUM

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Abstract

The invention relates to the field of seal, in particular to a box type seal structure. The whole box type seal structure is in a ring shape and includes dustproof rings, a skeleton and at least one centrifugation lip portion, containing space is formed between the skeleton and the dustproof rings, and a gas inlet hole which communicates with the containing space is formed in the skeleton; and thecentrifugation lip portions are arranged at the skeleton and extend out of the skeleton to abut against the dustproof rings. When a first member and a second member are relatively rotated, airflow which flows into the containing space from the gas inlet hole of the skeleton can separate at least one centrifugation lip portion from the dustproof rings to form predetermined intervals and the airflow can flow out of the box type seal structure from the predetermined intervals. According to the box type seal structure, a static seal and a dynamic seal can be provided for a rotating assembly according to the seal of the seal lip portions and an air seal.

Description

technical field [0001] The present invention relates to the field of sealing, more particularly to a box-type sealing structure used for sealing between components capable of relative rotation. Background technique [0002] The main shaft and bearings of today's glass machines often work in harsh environments and are surrounded by water vapor, fog and glass powder, so it is very important to protect the main shaft and bearings. In the prior art, the bearing is installed in the chamber of the glass machine, and the main shaft and the bearing are sealed by means of a labyrinth seal and an air seal. When the glass machine is working, the external air continuously enters the room where the bearing is installed through a specific channel and blows out the water vapor, mist and glass powder accumulated on the outside of the main shaft and the bearing through the stable air pressure. In addition, the labyrinth seal having a complex structure can also prevent contaminants from ente...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/322F16J15/3216F16J15/3232F16J15/3244F16J15/40F16J15/447F16C33/78F16C33/80
CPCF16C33/766F16C33/7823F16C33/7876F16C33/7883F16C33/805F16J15/3216F16J15/322F16J15/3244F16J15/40F16J15/447
Inventor 吴丽娟刘鑫吉尔森·阿瑞玛乌维·尼伯林
Owner SCHAEFFLER TECH AG & CO KG