This device is designed and manufactured in accordance with the dust load test requirements in item 5.9.2 of IEC 60312 and GB/T 20291.1 standards, and is compatible with both national and European standard testing specifications. It is mainly used for vacuum cleaners and dust collectors to test the vacuum performance of the equipment connection head after inhaling the specified test dust in the standard, and to verify the negative pressure stability and vacuum performance attenuation characteristics of the product under dust load conditions.

The core of the device adopts a PLC programmable controller and a 7-inch industrial touch screen as the human-machine interaction and control core. It can freely set parameters such as test duration, sampling interval, and test cycle number, and display real-time instantaneous vacuum degree values, pressure change curves, and remaining test duration; The control system automatically collects and stores vacuum pressure data throughout the process, without the need for manual monitoring and recording.

The test end is equipped with a standard pressure equalization box and a 30mm standard orifice plate. The airflow simulation circuit is strictly built according to the standard structure to accurately simulate the real working conditions of the vacuum cleaner with dust load. Through orifice plate throttling and pressure equalization box stabilization, the airflow state and pressure environment meet the standard test conditions, ensuring accurate and reproducible test data.

The PLC high-speed acquisition module reads the values of the vacuum pressure sensor in real time, dynamically monitors the trend of vacuum degree changes during the load process, and automatically records key data such as initial vacuum degree, vacuum degree attenuation value during dusty process, steady-state vacuum degree, and extreme pressure; After the test is completed, the original test data, pressure curve, and test report can be exported with one click through the USB interface, supporting data traceability, analysis, and archiving.

Main components

1. Vacuum pressure acquisition module

Equipped with high-precision vacuum pressure sensors, installed at the connection head of the tested equipment, real-time collection of negative pressure data, strong anti-interference ability, and measurement accuracy that meets standard measurement requirements.

2. Standard pressure equalization box and 30mm standard orifice plate component

Strictly benchmark the structural dimensions of national and European standards, stabilize the airflow field, eliminate airflow pulsation interference, and ensure consistency in testing conditions.

3. Dust feeding and load simulation unit

Designated test dust can be quantitatively released according to standards to simulate the continuous dust suction process of the dust collector, achieving continuous load testing.

4. PLC control system

Responsible for logic control, timing control, data acquisition, signal operation, automatically completing the entire process of start stop, timing, sampling, and data storage, supporting multiple sets of experimental program presets and calls.

5. 7-inch industrial touch screen

Visual operation interface, capable of setting test time, sampling frequency, alarm threshold, real-time display of vacuum degree value, pressure curve, and operating status, supporting one click parameter saving.

6. Fixtures and fixture fixing mechanism for the tested product

Adapt to different models of vacuum cleaners and dust collectors with interface specifications, quickly connect and install, ensure connection sealing, and prevent air leakage from affecting test results.

7. Stable pressure gas supply and gas pipeline system

Adopting sealed negative pressure resistant pipelines to reduce gas path losses, ensure smooth and stable gas paths, and adapt to long-term continuous testing.

8. Data storage and export unit

Built in local storage module, capable of saving multiple sets of historical experimental data, supports USB export of Excel format reports, facilitating quality inspection archiving and R&D analysis.

9. Security protection module

Equipped with overpressure alarm, timeout shutdown, emergency stop protection functions, automatic shutdown under abnormal working conditions, ensuring the safety of equipment and operators.

10. Equipment rack and protective structure

The overall structure adopts a rust proof profile frame, which is stable and equipped with dust-proof protection design, suitable for long-term use in laboratory and production line quality inspection environments.

Core testing function

It can complete empty load vacuum test, rated dust load vacuum test, and long-term continuous dust load vacuum decay test to evaluate the negative pressure performance changes of the product during dust accumulation and filter blockage,

 providing standardized testing basis for product performance optimization, factory inspection, and type testing.