Filter internal exhaust hole plugging tool and leakage detection device

CN224497949UActive Publication Date: 2026-07-14WUXI WEIFU HIGH TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI WEIFU HIGH TECH CO LTD
Filing Date
2025-08-14
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

When the return oil function of the existing diesel filter fails, it is impossible to accurately determine whether the leak is coming from the vent or the return oil port, making it impossible to determine whether an internal leak has occurred.

Method used

A tooling for sealing the internal vent of a filter was designed, consisting of an elbow clamp, a bushing, a pressure gasket, and an expansion ball. Through threaded connection and lateral deformation of the expansion ball, the vent is isolated from the exhaust return port. Combined with air pressure detection and observation of air bubbles in a water tank, it can be determined whether the return port is leaking air.

Benefits of technology

It enables accurate detection of filter leaks under calibrated air pressure, avoids interference from the exhaust port, and improves the accuracy and reliability of the detection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to filter internal leakage detection technical field, especially filter internal exhaust hole plugging frock and leakage detection device. Include: elbow clamp, bush, first pressure gasket, second pressure gasket and expansion ball, first pressure gasket, expansion ball and second pressure gasket are in proper order and are set on the clamping lever of elbow clamp, bush is connected with the fixed end of elbow clamp and is set on clamping lever, bush is located between second pressure gasket and fixed end. The utility model can avoid the influence of exhaust hole, and whether the oil return hole leaks under the calibration air pressure of filter is detected. The utility model uses expansion ball, and in axial pull, pressure gasket extrudes expansion ball, and expansion ball occurs transverse deformation, and is pasted with filter pipeline inner wall, and the interference of exhaust hole gas is blocked, and whether the oil return hole leaks is tested.
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Citation Information

Patent Citations

  • Overhead fuel filter

    CN223048916U