CN106525641A - Measurement method of dust accumulation amount of filter efficiency of gauze mask - Google Patents
Measurement method of dust accumulation amount of filter efficiency of gauze mask Download PDFInfo
- Publication number
- CN106525641A CN106525641A CN201610958472.7A CN201610958472A CN106525641A CN 106525641 A CN106525641 A CN 106525641A CN 201610958472 A CN201610958472 A CN 201610958472A CN 106525641 A CN106525641 A CN 106525641A
- Authority
- CN
- China
- Prior art keywords
- mask
- mass
- gauze mask
- water
- weighing
- 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
Classifications
-
- 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
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
-
- 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
Abstract
The invention discloses a measurement method of the dust accumulation amount of the filter efficiency of a gauze mask. The measurement method comprises the following steps: 1, weighing the mass M1 of the used gauze mask; 2, weighing the mass M of a container with water, putting the used mask into the container with the water, weighing the mass M2 of the container with the water, clearing solid particles on the gauze mask, wiping water in the mask, then weighing the mass M3 of the gauze mask, drying the gauze mask, and weighing the mass M5 of the dried gauze mask; 3, filtering an aqueous solution blended with the solid particles in the step 2, drying, and weighing the mass M4 of the obtained solid particles; 4, calculating the dust accumulation amount of the filter efficiency of the gauze mask according to (M4+M2-M3-M5)/M1=alpha. The measurement method is accurate in measurement; the particles which can be dissolved and cannot be dissolved in water can be effectively obtained; a measurement result is accurate, and the operation process is simple.
Description
Technical field
The invention belongs to mask filtration efficiency laying dust measurement technique field, more particularly to a kind of mask filtration efficiency product
The measuring method of dust quantity.
Background technology
The air that mask can effectively filter Xi Ren pulmonarys is worn, pedestrian, medical worker, factory work personnel need isolation
When dust, pathogenic bacteria and toxic gas, it is very important from suitable mask.Protective filter-type respirator can put forth energy effect mistake
Harmful substance in air is filtered, the mask type circulated in current China market is a lot, including anti-dust, anti-toxic gas, prevented
The protective filter-type respirator such as pathogenic bacteria, for the real needs of industry-by-industry personnel, country put into effect corresponding mask standard with
Specification country mask market.The protection type filter-type respirator standard that China implements is mandatory product standard mostly, filter efficiency
It is its important detection project, therefore it is most important to study the filter efficiency of protective filter-type respirator.
According to blue standing grain mask laboratory test, it is proposed that under 32 liters of flows 3 microns of filter efficiency need to reach 99.9% with
On preferably；Under 85 liters of flows, 0.3 micron particle, at least 80% is relatively good.U.S. NOISH42CFR-84 is directed to protection object
Type is divided into 3 classes, i.e. N, R, P the filter element of anti-particle respirator.N classes are applied to protection non-oily particulate matter, R and P
Class is applied to protection non-oily particulate matter and oiliness particulate matter.The use time restriction ratio R class of P class filter elements is longer, R classes
Filter element use time is shorter, generally one working day, and P classes can be advised by manufacturer according to demand.Due to
The diversity of filter element filter efficiency, is divided into 3 ranks again：9S, 99,100, respectively N95, N99, N100；R95、
R99、R100；P95、P99、P100.
When existing mask is filtered to which, a certain amount of solid particulate matter is accumulated on the surface of mask, when in use, caused
Secondary suction human body.
The content of the invention
It is an object of the invention to provide a kind of measuring method of mask filtration efficiency laying dust amount, by using water-soluble
Mode is measured the acquisition of the solid particulate matter of the mask after use, according to this determining the accumulation of mask solid particulate matter,
When solving existing mask which being filtered, a certain amount of solid particulate matter is accumulated on the surface of mask, when in use, cause two
Secondary suction human body, the problem without related detecting method.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions：
The present invention is a kind of measuring method of mask filtration efficiency laying dust amount, is comprised the steps：
Step one, weighs the mass M 1 of used mask；
Step 2, the container being filled with water using weigh the quality for M；Used mask is put into into a container being filled with water
In, the quality of the container being filled with water is M2, after the solid particulate matter cleared up on mask, extracts the moisture on mask, weighs mask
Mass M 3, after mask is dried weigh mask mass M 5；
Step 3, weighs after the aqueous solution for being mixed with solid particulate matter is filtered, is dried and obtain solid particulate matter in step 2
Mass M 4；
Step 4, calculates the laying dust amount of mask filtration efficiency according to (M4+M2-M3-M5)/M1=α.
The invention has the advantages that：
Acquisition by being measured the solid particulate matter of the mask after use using water-soluble mode of the invention, according to this
To determine the accumulation of mask solid particulate matter；The metering system has measurement accurate, effectively will dissolving and insoluble and water
Particulate matter obtained, with measurement result accurately, operating process is simple.
Certainly, the arbitrary product for implementing the present invention is it is not absolutely required to while reaching all the above advantage.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, use required for describing to embodiment below
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, can be attached to obtain others according to these accompanying drawings
Figure.
Fig. 1 is a kind of flow chart of the measuring method of mask filtration efficiency laying dust amount of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to shown in Fig. 1, the present invention is a kind of measuring method of mask filtration efficiency laying dust amount, is comprised the steps：
Step one, weighs the mass M 1 of used mask；
Step 2, the container being filled with water using weigh the quality for M；Used mask is put into into a container being filled with water
In, the quality of the container being filled with water is M2, after the solid particulate matter cleared up on mask, extracts the moisture on mask, weighs mask
Mass M 3, after mask is dried weigh mask mass M 5；
Step 3, weighs after the aqueous solution for being mixed with solid particulate matter is filtered, is dried and obtain solid particulate matter in step 2
Mass M 4；
Step 4, calculates the laying dust amount of mask filtration efficiency according to (M4+M2-M3-M5)/M1=α.
By being measured the acquisition of the solid particulate matter of the mask after use using water-soluble mode, according to this determining
The accumulation of mask solid particulate matter；The metering system has measurement accurate, effectively by dissolving and the insoluble granule with water
Thing is obtained, and with measurement result accurately, operating process is simple.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Specific features, structure, material or the feature described with reference to the embodiment or example is contained at least one enforcement of the present invention
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
And, the specific features of description, structure, material or feature can be in one or more any embodiments or example with conjunction
Suitable mode is combined.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All of details is described, it is only described specific embodiment also not limit the invention.Obviously, the content according to this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (1)
1. a kind of measuring method of mask filtration efficiency laying dust amount, it is characterised in that comprise the steps：.
Step one, weighs the mass M 1 of used mask；
Step 2, the container being filled with water using weigh the quality for M；Used mask is put in a container being filled with water, should
The quality of the container being filled with water is M2, after the solid particulate matter cleared up on mask, extracts the moisture on mask, weighs the quality of mask
M3, weighs the mass M 5 of mask after mask is dried；
Step 3, weighs the matter for obtaining solid particulate matter in step 2 after the aqueous solution for being mixed with solid particulate matter is filtered, is dried
Amount M4；
Step 4, calculates the laying dust amount of mask filtration efficiency according to (M4+M2-M3-M5)/M1=α.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958472.7A CN106525641A (en) | 2016-10-27 | 2016-10-27 | Measurement method of dust accumulation amount of filter efficiency of gauze mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958472.7A CN106525641A (en) | 2016-10-27 | 2016-10-27 | Measurement method of dust accumulation amount of filter efficiency of gauze mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106525641A true CN106525641A (en) | 2017-03-22 |
Family
ID=58325741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610958472.7A Pending CN106525641A (en) | 2016-10-27 | 2016-10-27 | Measurement method of dust accumulation amount of filter efficiency of gauze mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106525641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387601A (en) * | 2017-08-03 | 2019-02-26 | 裕亲有限公司 | Empty dirt test macro |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237726A (en) * | 1979-08-01 | 1980-12-09 | The Dow Chemical Company | Process for predicting the useful life of a respirator cartridge |
| JPS5940143A (en) * | 1982-08-30 | 1984-03-05 | Shibata Kagaku Kikai Kogyo Kk | Testing method of filter material performance of dust respirator |
| CN101131345A (en) * | 2006-09-22 | 2008-02-27 | 北京清能创新科技有限公司 | Detecting method for mask filtration efficiency and resistance |
| CN104677766A (en) * | 2014-09-30 | 2015-06-03 | 北京城市排水集团有限责任公司 | Method for detecting volcanic biological filter material |
| CN105181516A (en) * | 2015-08-25 | 2015-12-23 | 青岛农业大学 | Determination method for shrub dust-retention amount |
-
2016
- 2016-10-27 CN CN201610958472.7A patent/CN106525641A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237726A (en) * | 1979-08-01 | 1980-12-09 | The Dow Chemical Company | Process for predicting the useful life of a respirator cartridge |
| JPS5940143A (en) * | 1982-08-30 | 1984-03-05 | Shibata Kagaku Kikai Kogyo Kk | Testing method of filter material performance of dust respirator |
| CN101131345A (en) * | 2006-09-22 | 2008-02-27 | 北京清能创新科技有限公司 | Detecting method for mask filtration efficiency and resistance |
| CN104677766A (en) * | 2014-09-30 | 2015-06-03 | 北京城市排水集团有限责任公司 | Method for detecting volcanic biological filter material |
| CN105181516A (en) * | 2015-08-25 | 2015-12-23 | 青岛农业大学 | Determination method for shrub dust-retention amount |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387601A (en) * | 2017-08-03 | 2019-02-26 | 裕亲有限公司 | Empty dirt test macro |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105738263B (en) | Suspended particulate substance detection device and detection, method for early warning in a kind of air | |
| Wieslander et al. | Occupational exposure to water based paint and symptoms from the skin and eyes. | |
| KR20140146860A (en) | Mask Filter Test System | |
| Koivisto et al. | Workplace performance of a loose-fitting powered air purifying respirator during nanoparticle synthesis | |
| CN106525641A (en) | Measurement method of dust accumulation amount of filter efficiency of gauze mask | |
| CN106501150A (en) | A kind of mouth mask strainability tester | |
| CN107015266A (en) | A kind of calibration system and its scaling method of flow gas environment ion-chamber tritium concentration monitor | |
| Tsuji et al. | Non-destructive detection of particulate radiocesium using a non-woven fabric cartridge filter for rapid preprocessing | |
| CN106501152A (en) | A kind of method of determination and evaluation of mask filtration efficiency | |
| RU2422802C1 (en) | Procedure for evaluation of dust content of working zone | |
| KR20160123762A (en) | Apparatus for measuring particulate matter with thermo-hygrostat chamber | |
| CN107389526A (en) | A kind of air filter efficiency evaluation method | |
| LaRue et al. | Navigating performance standards for face mask materials: a custom‐built apparatus for measuring particle filtration efficiency | |
| CN204924866U (en) | Calibration system of digit dust appearance | |
| CN107941661A (en) | Classification reagent for hemocyte analyzers suit of one kind five and preparation method thereof | |
| SHOKRI et al. | Evaluation of physical characteristics and particulate filtration efficiency of surgical masks used in Iran's hospitals | |
| JP2013140081A (en) | Methods of processing and using filter for detecting iodine and cesium | |
| CN106501153A (en) | A kind of anti-dust respirator filter efficiency measuring method | |
| Newnum | The effects of relative humidity on respirator performance | |
| CN208459476U (en) | Current in resistance property detection device and arrester checks system | |
| CN207649848U (en) | People's air defense wall air tightness detection apparatus | |
| CN110420505A (en) | It filters the Failure Alarm method of malicious device and filters malicious device | |
| Liu et al. | Airborne mineral dust measurement using an integrated microfluidic device | |
| CN104034815B (en) | The detection method of icariin and epimedin C content in CHUANKEZHI ZHUSHEYE | |
| CN106440257A (en) | Replacing method and device for filtering net of air purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |