Medical mask synthetic blood penetration resistance tester and detection method thereof

Abstract

The invention discloses a medical mask synthetic blood penetration resistance tester and a detection method thereof. The medical mask synthetic blood penetration resistance tester comprises a base, wherein a mask fixing device is arranged on one side of the base, an injection device is arranged on the other side of the base, an automatic telescopic baffle is arranged between the mask fixing deviceand the injection device, and the time and the speed of synthetic blood injected by the injection device reaching the mask fixing device are controlled through the automatic telescopic baffle. The beneficial effects of the invention are that: the method is suitable for large-scale production; automatic baffle plate, when the injection device valve starts to be opened; various equipment parts havedifferent frictional resistances; the novel mask synthetic blood penetration resistance detector not only can block the liquid flow rate with high liquid flow rate at the initial stage of spraying time, but also can block the flow rate with low liquid flow rate at the initial stage of spraying time, so that artificially synthesized blood sprayed within specified time is horizontally sprayed out at a set uniform speed, and the accuracy of a test result is improved.

Description

technical field [0001] The invention relates to the technical field of mask detection, in particular to a medical mask anti-synthetic blood penetration tester and a detection method thereof. Background technique [0002] At present, the known face mask synthetic blood penetration detector is designed according to the technical scheme in YY / 0691-2008 / ISO22609:2004, and the equipment made according to the above-mentioned standards injects a certain volume of synthetic blood into the mask within a controlled time. When the sample is on, because the front-end synthetic blood body passes through the pipeline, valve and nozzle when the valve is opened, the flow rate decreases due to friction, and a certain volume of synthetic blood cannot be ejected at a uniform speed within the specified time. Although there is a positioning target (with 0.5cm hole plate) is used to block the high-pressure jet part of the sprayed liquid flow, but it is very easy to block the qualified part due to...

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Problems solved by technology

[0002] At present, the known face mask synthetic blood penetration detector is designed according to the technical scheme in YY / 0691-2008 / ISO22609:2004, and the equipment made according to the above-mentioned standards injects a certain volume of synthetic blood into the mask within a controlled period of time. When the sample is on, because the front-end synthetic blood body passes through the pipeline, valve and spray head when the valve is opened, the flow rate decreases due to friction, and a certain volume of synthetic blood cannot be ejected at a uniform speed within the specified time. Although there is a positioning target (with 0.5cm hole plate) is used to block the high-pressure jet part of the sprayed liquid flow, but it is very easy to block the qualified part due to the extremely slight position deviation of the nozzle and the influence of external force during the midway test. Synthetic blood eventually makes the volume of synthetic blood sprayed onto the mask insufficient, leading to deviations in test results that are not known to the testers; and when the valve is just opened, the flow rate of the liquid at the beginning of the injection time is slow and the liquid at the end of the injection time is slow. The detection equipment with a fast flow rate has no effect, causing the target speed of the liquid sprayed into the mask to be higher than the set value, causing serious deviations in the test results, which are not known to the test personnel

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