XF-KXLL01 Mask Leakage Rate Test Stand

XF-KXLL 01 Mask Leakage Rate Test Stand

The leakage rate test bench was independently absorbed based on similar foreign equipment and further improved according toNational and industry standardsRedesign the production processTest for leakage rate and sealing of masksDevice. useSalty and oilyAerosol generator, photometer acquisition system. It has added a computer control system and improved the level of automation, making it a fully functional, technologically advanced, and highly automated testing device among similar products both domestically and internationally.

Main components of the equipment

Leakage rate test benchMade domesticallyProduction, but the core component photometer is an imported product from abroadThe entire gas path requires external compressed air as the gas source, and the power for detecting the gas path is provided by a vacuum pump. Install aerosol generators on the gas pathPipeline occurrence1Set;Detecting the installation of pneumatic fixtures with cylinders on the pneumatic circuit1Setphotometer2TaiwanOne sealed cabin.

3.2.2According to the standard

GB 2626-2019Respiratory Protection Self priming filter type particulate matter respirator6.4leakage

GB 19083-2010Technical Requirements for Medical Protective Masks - Tightness

EN 149-2001+A1-2009 (Optional)

3.2.3Test content

Leakage rate（GB 2626-2019）

Tightness（GB 19083-2010）

Leakage rate（EN 149-2001+A1-2009）(Optional)

3.2.4Technical parameters of the whole machine

1.Aerosol type: corn oil,NaCl

2.Aerosol dynamic particle size range: (oily)（0.02-2）um, quality median diameter0.3um.

(Saltiness)（0.02-2）um, quality median diameter0.6um .

3.Photometer: concentration range1ug/m³-100mg/m³

4.Appearance dimensions: Inspection chamber:1300X1100X2350 ,Control cabinet:1300X900X2350

5.Consumables: Preparation of oily solution (according to standards),NaClSolution preparation (according to standards), filter element in compressed air intake filter (annually), purification filter element for air discharge from the warehouse (annually)

6.Laboratory inlet temperature:（25±5）℃；

7.Temperature and humidity of the intake environment in the laboratory:（30±10）%RH；

10Electricity: Chinese standard, supply voltageAC220V±10%Power supply frequency50Hz±1%, Power3kW

3.2.5Working environment requirement

lLaboratory inlet temperature:（25±5）℃；

lTemperature and humidity of the intake environment in the laboratory:（30±10）%RH；

lElectricity: Chinese standard, supply voltageAC220V±10%Power supply frequency50Hz±1%，power3kW；

lCompressed air source requirements: in700 kPaDown flow300L/min ,And require compressed air to be dry and clean;

4Performance characteristics of leakage rate test bench

lPrinciple of test bench: Oil or salt aerosols are blown into the test chamber through compressed air, and the concentration inside the chamber is adjusted by adjusting the generator flow knob or compressed air flow rate. The photometric score is divided into two probes, which are used to test the concentration of pollutants inside and outside the mask. The corresponding data is calculated through software.

lThe whole machine is integrated with the computer in the overall test bench, and the computer can be operated manually and automatically for testing. The report can be stored in the computer, uploaded online, and printed. The software is provided byVBWritten with a user-friendly interface that is easy to understand and operate;

lPositive pressure blowing pipelineEquipped with system intake low pressure protection, usingSMCPressure warning switch to prevent equipment damage caused by low external feed pressure;

lThe gas pipeline is further filtered to remove water on the basis of primary filtration, increasingQ/P/SThree stage continuous filter for secondary filtration and water removal;

lAfter the salt test is completed, cleaning is required before conducting the oil test

lUsing one workstation for testing；

laerosol generatorEquipped with salt and oil generators;

lThe sealed cabin adopts a visible structure, with glass windows on three sides and a sealed door on one side, which can be opened both inside and outside.

lDiffuse air intake at the top of the sealed cabin, with conical air intake and air outlet placed at the bottom of the diagonal. Filter is added to the external exhaust for purification;

lUpstream and downstream collection of photometer；

l2Tai JiThe two probes of the photometer collect data separately2Different concentration ranges, collect concentrations inside the box and maskThe flow rate is detected by extracting the airflow generated in the gas path through a vacuum pump, and the size is manually adjusted by the flow meter；

lThe detection and control system is the foundationa surnamePCIntegrated control system for machines, including computer systems、I/OHardware and related application software such as interfaces, various control valves, process input and output channels, counter data transmission links, etc. Aerosol generators, piezoelectric electrostatic neutralizers, rapid heating devices, mixers, and pneumatic fixtures are designed and manufactured according to testing requirements. Automatic control and data processing of the testing process can be achieved by operating the computer；

lA complete detection system, including concentration control system, data comparison and calibration system, daily rapid inspection, quality concentration testing, filtering efficiency loading, filtering efficiency limit loading, report storage, printing system, etc；

lUsing a data acquisition card for data collection, processing, and analysis functions, in conjunction with the company's self-developed specialized software, the human-machine interface is gentle, the operation is simple, and automatic and manual control can be performed;