Pointer type differential pressure gauge calibration device

By designing a combination of a protective housing, an air pump, a tee pipe and a sealing assembly, the problem of frequent replacement of the butt joint pipe in the prior art is solved, efficient adaptation and replacement of the pressure differential gauge calibration device is achieved, and work efficiency is improved.

CN223449393UActive Publication Date: 2025-10-17HAINAN FUSHITOU MEASUREMENT & TESTING CO LTD
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Patent Information

Application Number
CN202422975122.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-10-17
Estimated Expiration
2034-12-04

AI Technical Summary

Technical Problem

The existing pointer-type differential pressure gauge calibration device needs to frequently replace the docking tube when facing differential pressure gauges of different specifications, which causes the staff to waste time and reduce the calibration efficiency.

Method used

A pointer-type differential pressure gauge calibration device was designed, which includes a protective shell, an air pump, a tee, a diverter tube and a sealing assembly. Through the combination of a sealing sleeve, a slider, a ferrule, a clamping column and a spring, the connecting tube can be easily replaced and sealed, and it is suitable for differential pressure gauges of different specifications.

Benefits of technology

This enables staff to quickly replace the docking tubes when faced with pressure differential gauges of different specifications, thereby improving calibration efficiency and reducing time waste.

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Abstract

The utility model discloses a pointer type differential pressure gauge calibration device which comprises a protective shell, an air pump used for detecting exhaust of a differential pressure gauge is installed in the protective shell, the top of the air pump is communicated with a three-way pipe used for dividing air, one end of the three-way pipe is provided with a standard gauge used for comparing the differential pressure gauge, and the other end of the three-way pipe is provided with a pointer. The end, away from the standard meter, of the three-way pipe communicates with a shunting cylinder. According to the utility model, when facing differential pressure gauges of different specifications, a worker firstly grabs the movable plate to enable the clamping column to move out of the clamping sleeve, then the worker rotates the sealing sleeve to enable the butt joint pipe matched with the differential pressure gauge to be exposed, and then the worker loosens the movable plate, and the spring pulls the movable plate to enable the clamping column to be inserted into the clamping sleeve. In this way, the sealing sleeve is limited, the sealing sleeve is matched with the rubber plate to seal other butt joint pipes, and therefore a worker can conveniently replace the butt joint pipes to adapt to differential pressure gauges of different specifications.
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