Filter typeantigas mask, is the most common type of gas mask. The filter type gas mask is mainly composed of the mask body and the gas filter.The mask can seal and isolate the external air and protect the mouth, nose and face.The inside of the filter is filled withActivated carbonAs the main component of activated carbon, there are many pores with different shapes and sizes in the activated carbon, which can absorb dust, and the surface of the pores of activated carbon is impregnated with copper, silver and chromiummetallic oxideetc.ChemicalsSo as to react with the toxic gas after adsorption and make the toxic gas lose its toxicity.The new activated carbon medicament adopts molecular level coating technology, which can make the molecular level thickness of impregnating medicament uniformly adhere toCarrier activated carbonThe anti poison agent impregnated into the effective micropores of activated carbon has the best quality performance ratio.
Filter typeantigas maskAntitoxic carbon is used to protect the vapor of poison.Antitoxic carbon is made of activated carbon.The pore surface of activated carbon is impregnated with copper, silver and chromiummetallic oxideAnd other chemicals, they become activated carbon.Its protective effects on poison vapor include:
2. Chemical changes in the reaction between chemical agents on carbon and toxic agents:
3. Oxygen and water in air, chemical agent on carbonCatalysisAnd react with the poison
These effects can produce reliable protective effects on existing known poisons.But for the familiarcarbon monoxide(The main component in gas) can't be protected.
Features
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Gas maskIt is a filter type large field of view screen, double layerrubberMarginal individualsrespiratory tractProtective equipment can effectively protect the wearer's face, eyes and respiratory tract fromPoison,Biological warfare agentandRadioactive dustIt can be used by people in different fields such as industry, agriculture, medical research, etcIt can be used by the army, police and civil defense
Functional features
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The sealing frame of the mask is anti folded, comfortable to wear, easy to be airtight, and can meet the needs of more than 95% of adult citizens. The five straps of the mask can be adjusted at will, and the tightness can be appropriate
The lens of the maskProtective layerThe use of water blocking cover structure can ensure good performance of the mask during use
The large window lens of the mask is composed ofOptical plasticsMade of, with wide vision, good optics, impact resistance
Applicable environment: applicable to hazardsrespiratory systemBut it will not endanger life and health immediately
Protection scope: dust, heavy smokedroplet, toxic gas, toxic steam, powder ingredient location, furniturespray, and those tiny substances invisible to the naked eye
Field of vision: total field of vision: ≥ 75%, binocular field of vision: ≥ 60%, lower field of vision: ≥ 40 degrees, mask lensTransmittance：≥89%
The cover body is made of soft and non-toxic silicone material, and the anti folding sealing frame can meet the needs of 95% adults, ensuring high comfort when worn for a long time;Headnet headband design, firmly worn, ensuring air tightness, fully meeting the needs of wearingsafety hatperhapsSafety helmetTo prevent pressure concentration points on the head and further increase comfort;Spherical window design, clear and open vision without distortion, effectively reduces the sense of depression, and the window is impact resistantpolycarbonateMade of material and coated with anti fog and anti scratch coating, with high strength andLight transmittance, effective while ensuring good visionEye protectionAnd face;The reasonable internal airflow design of the mask can effectively prevent the window from fogging and ensure clear vision;The optimized design of the mask inside the mask minimizes the re inhalation of exhaled gas;It is equipped with a voice diaphragm to ensure a goodLanguage communication；Special quick screwing bayonet, which can be connectedPoison filter box；Lightweight design, weighing only 510g, can effectively reduce the fatigue of wearing for a long time.
Use and maintenance
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① When using the mask, wear it upward from the chin, adjust the headband properly, and block it with the palm after wearing the maskPoison filter boxAir inletIf you inhale forcefully and the mask is close to the face without air leakage, it means that the mask is airtight and you can enter the dangerous drug related area to work
② After using the mask, wipe off all sweat and dirt, especially the lens, exhalation valve and inhalation valve. If necessary, flush the mask with water, and wipe off the gas filter box
③ If used in an infectious viral environment, 1% of the mask and filter box can be usedperacetic acid thimerosalWipe, clean and disinfect. If necessary, the mask can be soaked in 1%Peracetic acid disinfectantHowever, the filter box should not be soaked or soaked in water to prevent failure. After disinfection with disinfectant, it should be wiped with clean water and dried before reuse
1. The gas mask is a toxic and environmentally harmful product, which has not beenProfessional trainingPersonnel who have passed the inspection shall not disassemble them at will to reduce their parts and maintenance products
threePoison filter boxAfter moisture absorption, the anti poison ability will be reduced. Pay attention to prevent water ingress at ordinary times
All tools shall be stored in a cool and dry place and shall not be touchedOrganic solvent.
component
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The gas mask is mainly composed of filter element, cover, eye window, expiratory communication device andHeadbandAnd other components, each of which has its own responsibility and can cooperate tacitly.
Filter element
The filter element is a loyal guard on the gas mask, which only allows the clean air indispensable to the human body to pass through.Masks of all countries in the world are various, and the filter elements on the masks are also different in shape, but their internal structure design ideas are largely the same.It is internally equipped with countermeasuresaerosolThe filter layer (tiny particles suspended in the air), also called smoke filter, is actually a special layerFilter paper。It should not only filter harmful aerosol particles efficiently, but also not produce obvious resistance to human respiration.
The filter element is also equipped with anti-virus carbon specially used to deal with toxic gas vapor.It's like ordinaryCivil activated carbonDifferent, anti-virus charcoal should not only have very developedMicroporous structureTo make it have a large enough stomach to "eat" as many poisons as possible, and to be fully developedMesopore、MacroporeTo haveAdsorptionThe road is unblocked and meetsAdsorption rateRequirements.Antitoxic carbon removal requirementspore structure In addition to rationality, specialChemicalsBecause physical adsorption alone is not enough to deal with all kinds of poisons, we must use catalysts to carry out physical and chemical reactions, so that a large number of them can "take drugs" and become skilled“Drug addict”。
The new anti-virus charcoal has a strong ability to deal with poisons.However, over time, anti-virus charcoal will produce ainertiaThis is the naturalAgingeffect.In order to prevent this inertia from appearing too early, mask designers must carry out anti-aging treatment on the anti-virus charcoal.Catalysis and aging are two deep-rooted knowledgekey technology All countries are secretive.Some filter elements are installed on the left side of the mask;Some are installed inmandibleDivision;Some still carryAirway, no matter how skillfully placed, it seems like a superfluous thing.It is said that an enzyme that can "eat" poison has been found. If this enzyme is used on the filter element, the mask design will take a qualitative leap.
The mask body is the main part that integrates all parts of the gas mask.At first glance, it is nothing more than a rubber, not much knowledge.However, it should be suitable for people with a variety of head shapes. It should not only fit tightly, but also not allow poisons to enter through the gaps, without causing facial pain. This is really not an easy task.As far as the part that fits the face, that is, what experts call the sealing frame, mask designers have racked their brains.
Initially, the sealing frame was made of a piece of rubber, called a single piece of sealing frame.It can match the face, structure andmanufacturing processBoth are very simple, but after wearing, people often feel unbearable tenderness on the prominent part of the faceAir tightnessAlso poor.
LaterSLRFolded edge close fitting frame structure.The utility model adds a circle of reverse folding edge on the basis of the plane sealing frame, and forms the sealing force on the human face by the elastic pull of the rubber.Breathing maskInternal pressureIt is larger than the external pressure and is a sealed frame structure with good positive pressure and air tightness.There is no doubt that the SLR folded edge close fitting frame has made a big step forward than the single piece close fitting frame. However, there is still a big gap in meeting the tactical use requirements.Advanced sealing frame has air cushionTubular type、Double inversionFolded edge type and corrugated structure type.
Wearing method
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Wearantigas maskThe user should first select the appropriate mask according to the size of his head.WearGas maskAdjust the middle and upper headbands to appropriate positions, loosen the lower headband, grasp both sides of the mask with both hands, hold your breath, close your eyes, cover the chin of the mask, hold the headband back and up with both hands at the same time, put on the mask from bottom to top, tighten the headband, make the mask fit the face, then take a deep breath and open your eyes.
The way to check the airtightness of the mask is to block the air inlet and outlet of the breathing valve body with the palms of both hands, and then take a sharp breath. If the mask is close to the face, there is no air leakage. Otherwise, find out the reason and adjust the wearing position until it is airtight
When wearing, pay attention not to let the headband and hair press in the mask sealing frame, nor let the headband claw of the mask bend into the mask.In addition, the user should shave his beard before wearing the mask.
Interface standard: RD40 can be used with silicone gas maskFull face maskIt can also be used together with all gas masks conforming to EN148-1 standard
Weight: 265g;Material: aluminum;Standard color: white
No. 5 (CO type) small canister is manufactured, packaged, colored and inspected according to the national standard GB2890-2009.Optimized can body interiorStructural designThe internal structure and shell are made of all aluminumanodic oxidation Treatment, light weight, high strength, corrosion resistance, small sizeRespiratory resistanceSmall size, long anti-virus time, etc., and the anti-virus materials filled inside are efficientCarrier activated carbonAgents, inActivated carbonThe drug loading amount is reduced and the weight is reduced, while the antivirus time is longer than that in ChinaSimilar productsIt has been greatly improved, and the anti-virus time has reached the No. 5 small size specified in GB2890-1995CanisterThe antivirus time is 30 minutes, the penetration is 52 mL, the cumulative amount is 42 mL, and the weighted amount in the next ten minutes is 49 mL, the respiratory resistance is only 88.2 Pa, allTechnical indicatorsAll are qualified, and the weight is lighter, so the wearer will not feel tired after wearing for a long time.
