Rotary sealing performance testing device and method and processing method

A testing device and air tightness testing technology, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of the fluid, can solve the problems of high cost, difficult processing, and large inner cavity volume, etc. Achieve the effects of convenient processing and assembly, good test accuracy and convenient operation

Pending Publication Date: 2022-02-18
UPTON AUTOMATION SYST (GUANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test gas path with this structure has the disadvantages of complex structure, difficult processing, difficult assembly, and large inner cavity, resulting in high cost and low efficiency, and it is difficult to meet higher test requirements and batch applications.

Method used

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  • Rotary sealing performance testing device and method and processing method
  • Rotary sealing performance testing device and method and processing method
  • Rotary sealing performance testing device and method and processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0178] refer to Figure 1-9 , a rotary sealing test device, including at least one airtightness testing structure, the airtightness testing structure includes a main housing 10, a rotating body 20, and a test fixture 30;

[0179] The inside of the main housing 10 is provided with an accommodating chamber 11, and the main housing 10 is provided with an inlet / exhaust channel 12 and a testing channel 13 respectively connected with the accommodating chamber 11;

[0180] The rotating body 20 is arranged in the accommodation chamber 11, and can rotate relatively between the rotating body 20 and the main housing 10; an air channel 21 is arranged in the rotating body 20, and the two ends of the air channel 21 have respectively The first connection port 211 and the second connection port 212 for chamber communication;

[0181] The test fixture 30 includes a test fixture body 31, the test fixture body 31 is provided with a test cavity 32, and the test cavity 32 is connected to the test...

Embodiment 2

[0239] Please refer to Figure 10 , the characteristics of this embodiment are: the sealing structure includes a sealing sleeve 52 and a second sealing ring 53 sleeved on the periphery of the rotating body, the side wall of the sealing sleeve is provided with a first through hole and a second through hole, the first through hole It communicates with the first connecting port of the air channel, and the second through hole communicates with the second connecting port of the air channel; a second sealing ring is provided at the opening of the test chamber adjacent to the containing chamber. Specifically, the sealing sleeve may be a rubber sealing sleeve, a hydrogenated nitrile rubber sealing sleeve or a silicon rubber sealing sleeve, and the second sealing ring may be a rubber sealing ring, a hydrogenated nitrile rubber sealing ring or a silicon rubber sealing ring.

[0240] A processing method for a rotary sealing test device, comprising the following steps:

[0241] The main ...

Embodiment 3

[0247] Please refer to Figure 11-13 , the characteristics of this embodiment are:

[0248] It also includes a pressure dividing structure 40, and the main housing is also provided with a pressure dividing channel 14 that communicates with the containing chamber; the pressure dividing structure 40 includes a pressure dividing structure body 41, and a pressure dividing structure body 41 is provided with a pressure dividing chamber 42 , the pressure dividing cavity 42 is connected to the pressure dividing channel 14;

[0249] During the counterclockwise or clockwise rotation of the rotating body relative to the main casing, the airtightness test structure must also meet the following conditions at the same time:

[0250] Condition 3: The first connection port of the gas channel is connected to the test channel, and the connection between them is sealed by a sealing structure; the second connection port of the gas channel is connected to the pressure divider channel, and the conne...

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PUM

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Abstract

The invention discloses a rotary sealing performance testing device and method and a processing method. The device comprises at least one air tightness testing structure, wherein the air tightness testing structure comprises a main shell, a rotating body and a test fixture; an accommodating cavity is formed in the main shell, and the main shell is provided with an air inlet / outlet channel and a testing channel which are communicated with the accommodating cavity; the rotating body is arranged in the accommodating cavity, and the rotating body and the main shell can rotate relatively; an air path channel is arranged in the rotating body, and a first connecting port and a second connecting port which are respectively communicated with the accommodating cavity are formed in two ends of the air path channel; and the test fixture comprises a test fixture body, the test fixture body is provided with a test cavity, and the test cavity is communicated with the test channel. The device further comprises a sealing structure. The device has the advantages of being simple in structure, convenient to machine and assemble and good in testing precision, a testing air path structure with an ultra-small inner accommodating cavity can be easily machined, and the airtightness testing requirement and batch application of ultra-small sealing products are met.

Description

technical field [0001] The invention relates to an airtightness testing structure, in particular to a rotary airtightness testing device, method and processing method suitable for ultra-small sealed products. Background technique [0002] Due to the miniaturization of electronic components, such as crystal oscillators, chips, etc., the volume of the product is getting smaller and smaller, and a smaller test volume is required to improve the sensitivity and accuracy of the test and achieve the ideal test effect. In the prior art, the Chinese invention patent with the application number 201910334704.5 discloses a differential pressure air tightness tester and a test method. The differential pressure air tightness tester includes an air source interface, an inflation / inhalation valve, and an air release valve , the first pressure maintaining valve, the second pressure maintaining valve, the differential pressure sensor, the first pressure dividing valve, the second pressure div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 姜德志李波
Owner UPTON AUTOMATION SYST (GUANGZHOU) CO LTD
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