CN112304850A - Self-absorption filter type protective mask comprehensive performance test experimental device and method - Google Patents
Self-absorption filter type protective mask comprehensive performance test experimental device and method Download PDFInfo
- Publication number
- CN112304850A CN112304850A CN202011321952.5A CN202011321952A CN112304850A CN 112304850 A CN112304850 A CN 112304850A CN 202011321952 A CN202011321952 A CN 202011321952A CN 112304850 A CN112304850 A CN 112304850A
- Authority
- CN
- China
- Prior art keywords
- mask
- test
- dust
- flow
- head model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
Abstract
The invention discloses a comprehensive performance test experimental device and method for a self-absorption filter type protective mask, and relates to the technical field of dust prevention and control. The experimental device comprises a test chamber, a human head model, a respiratory flow control device and a measuring device; the test chamber is used for constructing a dust environment; the human head model is placed in the test room, and the oral cavity part of the human head model is worn with a mask; the respiratory flow control device is used for simulating different test flow modes; the measuring device comprises a dust-carrying weighing device, a particle counter and a micro-pressure meter. The invention more truly simulates the breathing flow and the operation environment of a mask wearer, can test the dust carrying capacity and the breathing resistance of the mask under different labor intensity and different operation environments and the filtering efficiency of the mask to particles with different particle sizes, effectively solves the problems of inconsistent testing flow mode and human body breathing, incomplete mask performance evaluation and the like in the performance test of the traditional self-absorption filtering type protective mask, and scientifically and accurately evaluates the protective performance of the self-absorption filtering type mask.
Description
Technical Field
The invention relates to the technical field of dust prevention and control, in particular to a device and a method for testing comprehensive performance of a self-absorption filter type protective mask.
Background
The industrial development of China is high, a large number of high-dust-yield workplaces are continuously developed in the industries of ore processing, building engineering, fossil energy exploitation, traffic infrastructure and the like, and the number of dust-collecting people is greatly increased. The problem of coal mine dust is the most prominent, and particularly, with the gradual exhaustion of shallow coal resources, more and more mines are mined to a depth of more than 800m, so that the problem of deep mining is faced.
The deep high ground stress makes the coal body breaking degree extremely serious, has the pulverization structural characteristic, and the mechanization level and the mining strength are improved, so that the coal face becomes the place with the largest dust yield under the coal mine, and the original dust concentration is up to 8000mg/m3Over half of the total dust production downhole. In order to reduce the pollution degree of a working face, the technical measures such as coal seam water injection, spraying dust fall and the like which mainly adopt wet dust suppression are applied in China, the working environment is improved to a certain extent, but the water content of air on the working face is greatly increased, and the characteristic of high humidity with the humidity of more than 90% is presented. Because coal dust has certain hydrophobicity, wet dust suppression cannot achieve an ideal effect, the concentration of mine dust is far beyond the national standard, and the occupational coal dust lung is increased at the rate of over ten thousand cases every year in China. In addition to high dust, high humidity, deep well workers are also affected by the coupling effect of medium-heavy-extremely heavy load operations. When the engineering measures are difficultWhen the dust concentration is effectively reduced to be below the national standard, the last line of defense for protecting workers is formed by wearing the individual dustproof respirator.
The self-suction filtering type protective respirator is an individual dustproof article which is most widely applied in the field of coal mines, and the dustproof performance of the self-suction filtering type protective respirator is mainly influenced by the individual respiratory flow, the flow mode, the physical and chemical properties of coal dust and the operating environment. However, the mask test standard in our country is established based on general industrial environment, it is difficult to ensure that the dust-proof efficiency, resistance, wearing duration and other performances of the self-priming filtering type protective mask meet the requirements under the coupling action of deep well high dust-high humidity and high labor intensity, and the test standard of the self-priming filtering type protective mask cannot be applied to deep well workers because the high dust concentration and high humidity of the deep well working environment can generate severe challenges to the dust-proof performance of the self-priming filtering type protective mask. At present, the performance test experimental device and method of the self-priming filtering type protective mask at home and abroad are less in research, and the performance of the mask in practical use is far inferior to that in the test due to the defects in the aspects of basic research, evaluation method, test rules and the like of the filtering performance and suitability of the mask filtering material.
Therefore, in view of the above problems, it is necessary to provide a scientific and rigorous experimental device and testing method for simulating a high-humidity and high-dust environment to perform a mask performance test study, and reasonably and correctly perform comprehensive performance evaluation of a self-absorption filter type protective mask.
Disclosure of Invention
The invention provides a comprehensive performance test experimental device of a self-absorption filter type protective mask, which comprises a test chamber, a human head model, a breathing flow control device and a measuring device, wherein the human head model is connected with the test chamber; the test chamber is used for constructing a dust environment; the human head model is placed in a test room, and a mask is worn on the oral cavity of the human head model; the respiratory flow control device is used for simulating different test flow modes and is connected with the head model through an upper respiratory tract simulation copper pipe; the respiratory flow control device comprises a humanoid respirator and an air pump; the measuring device comprises a dust-carrying weight metering device, a particle counter and a micro-pressure meter, wherein the dust-carrying weight metering device is arranged below the human head model and is used for measuring the dust-carrying amount of the mask; the particle counter is used for detecting the counting concentration of the particles inside and outside the mask; the micro-pressure meter is used for detecting the air pressure difference inside and outside the mask.
Preferably, a dust generating device for simulating a dust environment is arranged in the test chamber, and the dust generating device comprises a particle generating device, a humidity control device and fans which are arranged at four corners in the test chamber and used for blowing particulate matters to keep the particulate matters suspended; the particle generating device is used for generating a neutral NaCl test medium, and the humidity control device is used for monitoring and regulating the humidity in the mask test chamber.
Preferably, the particle generating device comprises a particle generator and a charge neutralizer, and the particle generator is provided with a regulating valve for regulating the generation amount of the particle concentration.
Preferably, the test flow mode which can be simulated by the respiratory flow control device comprises a circulating flow mode and a continuous flow mode; in the circulation flow mode, a human-simulated respirator simulates the air flow with a sine wave respiratory flow curve; the continuous flow mode simulates continuous and constant pumping flow by a pumping pump; the human-simulated respirator and the air pump are respectively connected with the upper respiratory tract simulation copper pipe through the guide pipes, and two flow modes are switched by adjusting a three-way valve arranged on the upper respiratory tract simulation copper pipe.
Preferably, a flow meter for monitoring the air exhaust flow is arranged on a conduit between the air exhaust pump and the upper respiratory tract simulation copper pipe.
Preferably, an artificial lung is arranged on a catheter between the air suction pump and the upper respiratory tract simulation copper tube.
Preferably, the dust-carrying weighing device comprises a high-precision electronic balance arranged below the head model and a dust shielding cover covering the head model and the electronic balance; the dust cover is provided with a through hole for exposing the mask.
The invention also discloses an experimental method for testing the comprehensive performance of the self-priming filtering protective mask, which comprises the following steps:
the method comprises the following steps: building an experimental device, wearing a mask to be tested on the face of the human head model, and sealing the edge of the mask on the human head model by using silicone adhesive; the head model is placed in a dust hood in the dust load weighing device, and the dust hood is adjusted to expose the mask to be tested in the air of the mask testing chamber.
Step two: and opening the dust-carrying weighing device to record the initial weights of the mask to be measured and the head model.
Step three: and opening the particle generator, the particle counter, the humidity control device and the fan, setting the particle generation amount and the indoor humidity according to the experiment requirement, and constructing the dust environment required by the experiment.
Step four: by adjusting the three-way valve, a flow pattern is provided for the test.
Step five: after the set flow pattern is stable, the particle counter is used for measuring the concentration of the particles of the test medium inside and outside the mask in a continuous time period, the micro-manometer is used for recording the pressure change inside and outside the mask, and the dust loading weight device is used for recording the dust loading capacity change of the mask.
Step six: and after the test is finished, replacing the mask to be tested, changing any one of the test flow size, the test flow pattern, the test medium concentration, the test medium particle size and the indoor humidity, keeping the rest test conditions unchanged, repeating the steps from two to five, and performing the experiment again to obtain a plurality of groups of experimental data.
Preferably, in step five, the test time for each set of experiments is eight hours.
Compared with the prior art, the self-priming filtering type protective mask performance test experimental device and the method disclosed by the invention have the advantages that:
(1) by analyzing the data sampling results of the dust-carrying weight measuring device, the particle counter and the micro-pressure meter, the dust-carrying amount, the breathing resistance and the filtering efficiency of the mask to different particles and the relationship among the dust-carrying amount, the breathing resistance and the filtering efficiency of the mask to different particles under different labor intensity, different humidity and dust concentration environments can be truly and comprehensively evaluated.
(2) The respiratory flow control device can accurately control the flow, flexibly switch different flow modes, and have more comprehensive and accurate experimental results, thereby having important significance for the verification and research of the respirator protection efficiency.
(3) The neutral NaCl particles after charge neutralization are used as a test medium, the neutral NaCl particles can well represent the particulate matters such as silicon dust, virus particles and the like which are most harmful to human bodies, the generated NaCl is polydisperse particles, the counting median particle size of the generated NaCl particles is 0.04 mu m, the particle size range which is most harmful to human bodies and is not easy to filter of electret fiber masks is better covered, and the particle size of the generated NaCl particles can represent the most severe test condition compared with the particle size of 0.01-0.03 mu m.
(4) The sealing edge of the mask can simulate the influence of leakage on the performance of the mask by inserting the hollow needle, so that the comprehensive performance evaluation and comparison research on masks with different filtering efficiencies by combining the respiratory resistance and the total leakage rate by scholars at home and abroad can be enriched, and meanwhile, the performance of the self-absorption filtering type protective mask can be more comprehensively reflected.
Drawings
For a clearer explanation of the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for a person skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a comprehensive performance testing experimental device of a self-priming filtering type protective mask disclosed by the invention.
The part names represented by the numbers or letters in the drawings are:
1-a test chamber; 2-head model; 3-a humanoid respirator; 4-an air pump; 5-mask; 6-a particle counter; 7-a micro manometer; 8-a particle generator; 9-charge neutralizer; 10-a humidity control device; 11-a fan; 12-an electronic balance; 13-a dust hood; 14-artificial lung; 15-a flow meter; 16-upper respiratory tract simulated copper tubing; 17-three-way valve.
Detailed Description
The following provides a brief description of embodiments of the present invention with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any inventive work belong to the protection scope of the present invention.
Fig. 1 shows a preferred embodiment of the present invention, which is parsed in detail.
The experimental device for testing the comprehensive performance of the self-priming filtering type protective mask shown in fig. 1 comprises a test room 1, a human head model 2, a respiratory flow control device and a measuring device.
The test chamber 1 is a 1.2m × 1.2m × 1.2m transparent chamber constructed of synthetic resin, and is used for constructing a dust environment, and a dust generating device for simulating the dust environment is arranged in the test chamber. The dust generating device comprises a particle generating device, a humidity control device 10 and a fan 11. The particle generating device is used for generating neutral NaCl test medium, simulating dust, and blowing the neutral NaCl test medium by the fans 11 arranged at four corners in the test chamber 1 to suspend the neutral NaCl test medium in the test chamber 1. According to the invention, neutral NaCl particles which represent the most harmful particulate matters to human bodies such as silicon dust, virus particles and the like are selected as the test medium, the particle size range of the neutral NaCl particles is 10-365nm, the particle size range which is most harmful to human bodies and is least easy to filter by the electret fiber mask can be better covered, and the test medium can represent the most severe test condition. The particle generating device comprises a particle generator 8 and a charge neutralizer 9, wherein the particle generator 8 adopts an 8026 type NaCl particle generator 8, and the charge neutralizer 9 adopts a 3054 type particle charge neutralizer 9. The particle generator 8 is also provided with a regulating valve for regulating the amount of particle concentration generated. The humidity control device 10 comprises a humidifier and a humidity sensor, monitors the humidity in the test chamber 1 through the humidity sensor, and adjusts the humidity in the humidifier control test chamber 1 according to the monitoring result.
The human head model 2 is placed in the test chamber 1, and a mask 5 is worn on the oral cavity and sealed with silicone adhesive.
The respiratory flow control device comprises a simulated human respirator 3, an artificial lung 14, an air pump 4 and a flowmeter 15, is connected with a human head model 2 through an upper respiratory tract simulation copper pipe 16 and is used for simulating two flow modes of circulation flow and continuous flow, and switching the two flow modes through adjusting a three-way valve 17 arranged on the upper respiratory tract simulation copper pipe 16. The humanoid respirator 3 and the air pump 4 are both adjustable in flow.
Wherein, the flow of air that the flow curve is sinusoidal wave is breathed in the simulation of circulation flow mode by imitative people's breathing appearance 3, has accomplished the accurate simulation of breathing when having accomplished the workman operation, and the actual condition when the respirator is worn to the human body that can be fine reflection of experimental result. Imitative people's breathing apparatus 3 passes through pipe connection with upper respiratory tract simulation copper pipe 16, and artificial lung 14 sets up on connecting tube, and its inside has increased the filtration system who comprises high-efficient air filter material, and it is inside to prevent that inspiratory containing particulate matter air current from returning gauze mask 5 cavity again at the expiration in-process, avoids simultaneously containing the particulate matter air current by the imitative people's breathing apparatus 3 of suction and then the instrument of jam. Specifically, the model 1101 human simulation respirator 3 is selected as the human simulation respirator 3, and the respiratory parameters to be simulated can be input.
The continuous flow mode simulates a continuous constant bleed flow by the pump 4. The air pump 4 is connected with the upper respiratory tract simulation copper pipe 16 through a conduit, and the flow meter 15 is arranged on the connecting conduit and used for monitoring the air pumping flow of the air pump 4.
The measuring device comprises a dust load weighing device, a particle counter 6 and a micro-pressure gauge 7. The dust-carrying weighing device comprises a high-precision electronic balance 12 arranged below the head model 2 and a dust shield 13 covering the head model 2 and the electronic balance 12. High accuracy electronic balance 12 is used for the real-time measurement gauze mask 5 to carry the dirt volume, and dust cover 13 is used for completely cutting off the interior high humid and dusty air of test room 1, prevents that the dust of eruption, high humid and air from attaching to on people's head model 2 and electronic balance 12 in a large number, influence gauze mask 5 effect of weighing. The dust cover 13 is provided with a through hole for exposing the mask 5. Particle counter 6 sets up outside test chamber 1, and its two test interface, one is through sampling pipe intercommunication test chamber 1, and respiratory tract simulation copper pipe 16 is connected to another through sampling pipe, measures the particle concentration with gauze mask 5 inner chamber in the test chamber 1 respectively. The micro-pressure meter 7 is arranged outside the test chamber 1, one of the two test interfaces is communicated with the test chamber 1 through a sampling pipe, the other test interface is connected with the upper respiratory tract simulation copper pipe 16 through the sampling pipe, and the pressure in the test chamber 1 and the pressure in the inner cavity of the mask 5 are respectively measured, so that the pressure difference inside and outside the mask 5 is obtained. In particular, granulesThe sub-counter 6 is a 3910 type portable nano-particle counter, and the micro-manometer 7 is AITFLOWTMModel PVM100 micro-pressure gauge.
The invention also discloses an experimental method for testing the comprehensive performance of the self-priming filtering protective mask, which comprises the following steps:
the method comprises the following steps: an experimental device is set up, the mask 5 to be tested is worn on the face of the human head model 2, and the edge of the mask 5 is sealed on the human head model 2 by using silicone adhesive. The head model 2 is placed on the electronic balance 12, and is covered in the dust-shielding cover 13 together with the electronic balance 12, and the dust-shielding cover 13 is adjusted to expose the mask 5 to be tested in the air of the testing chamber 1.
Step two: and opening the dust-carrying weighing device to record the initial weights of the mask 5 to be measured and the head model 2.
Step three: the particle generator 8, the particle counter 6, the humidity control device 10, and the fan 11 are turned on, and the particle generation amount and the indoor humidity are set as required for the experiment, thereby constructing a dust environment required for the experiment.
Step four: and adjusting the three-way valve 17 to conduct the upper respiratory tract simulation copper pipe 16 and the humanoid respirator 3 or the air pump 4, providing a flow mode for the test, and adjusting the flow.
Step five: after the set flow pattern is stable, the particle counter 6 is used for measuring the concentration of the particles of the testing medium inside and outside the mask in a continuous time period, the micro-pressure meter 7 is used for recording the change of the pressure inside and outside the mask 5, and the electronic balance 12 is used for recording the change of the dust carrying capacity of the mask 5. The test time was eight hours.
Step six: after the test is finished, the mask 5 to be tested is replaced, any one of the test flow, the test flow pattern, the test medium concentration, the test medium particle size and the indoor humidity is adjusted, the rest test conditions are unchanged, the steps from two to five are repeated, and the experiment is carried out again. More than three groups of parallel experiments are carried out on each group of experimental conditions to obtain a plurality of groups of experimental data. According to the test results, the breathing resistance, the filtering efficiency, the dust carrying capacity and the relation among the three of the mask 5 in the working environments with different labor intensities and different dust concentrations and humidity are evaluated, and the breathing resistance, the filtering efficiency, the dust carrying capacity and the relation among the three are compared with data specified by national standards, so that the failure time of the mask 5 is judged, and the comfort, the protection capacity and the comprehensive performance of the mask 5 are evaluated.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A self-priming filtering type protective mask comprehensive performance test experimental device is characterized by comprising a test room (1), a human head model (2), a breathing flow control device and a measuring device; the test chamber (1) is used for constructing a dust environment; the human head model (2) is placed in the test chamber (1), and a mask (5) is worn on the oral cavity part of the human head model; the respiratory flow control device is used for simulating different test flow modes and is connected with the head model (2) through an upper respiratory tract simulation copper pipe (16); the respiratory flow control device comprises a humanoid respirator (3) and an air pump (4); the measuring device comprises a dust carrying weight metering device, a particle counter (6) and a micro-pressure meter (7), wherein the dust carrying weight metering device is arranged below the head model (2) and is used for measuring the dust carrying amount of the mask (5); the particle counter (6) is used for detecting the counting concentration of the particles inside and outside the mask (5); the micro-pressure meter (7) is used for detecting the air pressure difference inside and outside the mask (5).
2. The self-priming filtering protective mask comprehensive performance test experimental device is characterized in that a dust generating device for simulating a dust environment is arranged in the test chamber (1), and the dust generating device comprises a particle generating device, a humidity control device (10) and fans (11) which are arranged at four corners in the test chamber (1) and used for blowing particulate matters to keep the particulate matters suspended; the particle generating device is used for generating a neutral NaCl test medium, and the humidity control device (10) is used for monitoring and regulating and controlling the humidity in the test chamber (1).
3. The self-priming filtering protective mask comprehensive performance test experimental device according to claim 2, wherein the particle generator comprises a particle generator (8) and a charge neutralizer (9), and the particle generator (8) is provided with a regulating valve for regulating the generation amount of particle concentration.
4. The self-priming filtering protective mask combination property test experimental device as claimed in claim 1, wherein the simulated test flow patterns of the respiratory flow control device include two types, namely a circulation flow pattern and a continuous flow pattern; in the circulation flow mode, a human-simulated respirator (3) simulates the air flow of which the respiratory flow curve is a sine wave; the continuous flow mode simulates continuous constant pumping flow by a pumping pump (4); the human-simulated respirator (3) and the air pump (4) are respectively connected with the upper respiratory tract simulation copper pipe (16) through a conduit, and two flow modes are switched by adjusting a three-way valve (17) arranged on the upper respiratory tract simulation copper pipe (16).
5. The self-priming filtering protective mask comprehensive performance test experimental device according to claim 4, wherein a flow meter (15) for monitoring the flow of the extracted air is arranged on a conduit between the air extracting pump (4) and the upper respiratory tract simulation copper pipe (16).
6. The self-priming filtering protective mask comprehensive performance test experimental device according to claim 4, wherein an artificial lung (14) is arranged on a conduit between the air suction pump (4) and the upper respiratory tract simulation copper pipe (16).
7. The self-priming filtering protective mask comprehensive performance test experimental device according to claim 1, wherein the dust carrying weighing device comprises a high-precision electronic balance (12) arranged below the head model (2) and a dust-shielding cover (13) covering the head model (2) and the electronic balance (12); the dust cover (13) is provided with a through hole for exposing the mask (5).
8. An experimental method for mask performance test using the self-priming filtration type protective mask comprehensive performance test experimental device according to any one of claims 1 to 7, characterized by comprising the steps of:
the method comprises the following steps: setting up an experimental device, wearing the mask (5) to be tested on the face of the head model (2), and sealing the edge of the mask (5) on the head model (2) by using silicone adhesive; the head model (2) is placed in a dust hood (13) in the dust load weighing device, and the dust hood (13) is adjusted to expose the mask (5) to be tested in the air of the test chamber (1);
step two: opening a dust-carrying weighing device to record the initial weights of the mask (5) to be tested and the head model (2);
step three: opening a particle generator (8), a particle counter (6), a humidity control device (10) and a fan (11), setting particle generation amount and indoor humidity according to experiment requirements, and constructing a dust environment required by the experiment;
step four: by adjusting the three-way valve (17), a flow mode is provided for the test;
step five: after the set flow mode is stable, measuring the concentration of the particles of the test medium inside and outside the mask (5) in a continuous time period through a particle counter (6), recording the pressure change inside and outside the mask (5) through a micro-manometer, and simultaneously recording the dust carrying capacity change of the mask through a dust carrying capacity weighing device;
step six: after the test is finished, the mask (5) to be tested is replaced, any one of the test flow size, the test flow pattern, the test medium concentration, the test medium particle size and the indoor humidity is changed, the rest test conditions are unchanged, the steps from two to five are repeated, and the experiment is carried out again to obtain multiple groups of experiment data.
9. The assay of claim 8, wherein in step five, the test time for each set of assays is eight hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321952.5A CN112304850A (en) | 2020-11-23 | 2020-11-23 | Self-absorption filter type protective mask comprehensive performance test experimental device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321952.5A CN112304850A (en) | 2020-11-23 | 2020-11-23 | Self-absorption filter type protective mask comprehensive performance test experimental device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112304850A true CN112304850A (en) | 2021-02-02 |
Family
ID=74335629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011321952.5A Pending CN112304850A (en) | 2020-11-23 | 2020-11-23 | Self-absorption filter type protective mask comprehensive performance test experimental device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112304850A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340787A (en) * | 2021-06-09 | 2021-09-03 | 青岛大学附属医院 | Breathing mask performance testing device |
| CN113405959A (en) * | 2021-06-18 | 2021-09-17 | 中煤科工集团重庆研究院有限公司 | Inhalable dust concentration detection device and method |
| CN113916617A (en) * | 2021-09-09 | 2022-01-11 | 上海大学 | Intelligent bionic human respiratory tract multi-part inhaled gas sampling method |
| CN113984619A (en) * | 2021-10-22 | 2022-01-28 | 中国矿业大学 | Respirator on-site protection factor evaluation system and method |
| CN114002124A (en) * | 2021-11-01 | 2022-02-01 | 山东黄河三角洲纺织科技研究院有限公司 | Melt-blown fabric electrostatic attenuation processing device and test method |
-
2020
- 2020-11-23 CN CN202011321952.5A patent/CN112304850A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340787A (en) * | 2021-06-09 | 2021-09-03 | 青岛大学附属医院 | Breathing mask performance testing device |
| CN113405959A (en) * | 2021-06-18 | 2021-09-17 | 中煤科工集团重庆研究院有限公司 | Inhalable dust concentration detection device and method |
| CN113916617A (en) * | 2021-09-09 | 2022-01-11 | 上海大学 | Intelligent bionic human respiratory tract multi-part inhaled gas sampling method |
| CN113984619A (en) * | 2021-10-22 | 2022-01-28 | 中国矿业大学 | Respirator on-site protection factor evaluation system and method |
| CN113984619B (en) * | 2021-10-22 | 2024-02-27 | 中国矿业大学 | Respirator on-site protection factor evaluation system and evaluation method |
| CN114002124A (en) * | 2021-11-01 | 2022-02-01 | 山东黄河三角洲纺织科技研究院有限公司 | Melt-blown fabric electrostatic attenuation processing device and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112304850A (en) | Self-absorption filter type protective mask comprehensive performance test experimental device and method | |
| CN214097072U (en) | Self-suction filtering type protective mask comprehensive performance test experimental device | |
| CN202837151U (en) | Automatic filter efficiency tester | |
| Hinds et al. | Performance of dust respirators with facial seal leaks: I. Experimental | |
| CN102830418B (en) | Method for open-loop measurement of radon exhalation rate by utilizing total count of 218Po and 214Po | |
| CN111521540A (en) | Experimental device and method for testing efficiency of individual dustproof respirator | |
| CN204346871U (en) | Rate performance test easy device crossed by filter-type respirator | |
| CN105823714A (en) | Wearable dust detection device and method | |
| CN202013269U (en) | Air respirator performance detector | |
| CN106501150A (en) | A kind of mouth mask strainability tester | |
| JP2007282826A (en) | Respiration simulator for evaluation test on respiratory protector | |
| CN104881509B (en) | A kind of bag-type dust removing system digitized simulation platform and its method for building up | |
| CN207923673U (en) | Mask barrier propterty test device | |
| CN111766092B (en) | Virus spray aerosol infection interactive simulation experiment system | |
| CN210487545U (en) | Electric mask air supply amount detection device and electric mask air supply amount and purification performance detection device | |
| CN104729966A (en) | Direct-reading dust concentration detector | |
| CN110934590A (en) | Real-time measuring method for respiratory flow under working state | |
| CN212159490U (en) | Experimental device for testing efficiency of individual dustproof respirator | |
| CN207318304U (en) | It is a kind of to detect device of the mask to various concentrations radon gas adsorption efficiency | |
| CN115563782A (en) | Construction method of comprehensive digging face respirable dust distribution model under influence of multiple factors | |
| CN113984619B (en) | Respirator on-site protection factor evaluation system and evaluation method | |
| CN113405959A (en) | Inhalable dust concentration detection device and method | |
| CN204797996U (en) | Experimental apparatus is measured to true human upper respiratory tract model flow field aerosol deposit | |
| CN112161906A (en) | Portable mask rapid detection method and system | |
| CN209662482U (en) | A kind of oxygen breathing apparatus detector based on ergonomic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |