Simple respirator and respirator training

First, the simple production of gas masks

The simple gas mask is made of a transparent plastic bag as a mask cover, and a poison mask made of a filter canister is filled with a filter and a filter material. Its production steps are as follows:

The first step is to prepare the required materials.
1. Filtration material: Any of the following materials may be selected. 1 Limestone particles: Mix the same amount of quicklime with clay, add water to form a block, dry and crush, take 1mm in diameter, soak in alkaline solution (soap water, alkali water, baking soda), saturated After taking out the shade. 2 Activated carbon material or charcoal.
2. Smoke filter material: 1 Sawdust: Sawdust from 0.6 to 1.2 mm. 2 cotton, cotton fabric, foam sponge and so on.
3. Insulation Material: 1 Mask: A transparent plastic bag that has a certain strength and is soft, airtight, and can cover the head. 2 bamboo, cans, etc. can be.
4. Sturdy seal material: tape, wire, elastic, cotton, elastic rubber cloth and so on.

The second step: the production method is shown in Table 9-1

Method Two:

The cover body can be made of plastic cloth, artificial leather, rubber cloth, tung oil cloth and other materials with certain strength, soft and airtight properties, cut according to the dimensions marked in Figure 10-2, and then use an elastic band to make a T-shaped headband. Measure the corresponding length and fit tightly on the cover. Then, the mandible area of ​​the mask is tightly integrated with the canister, fixed with a tape, and then two fixing strips are added to the canister to make the wearing stable.

Second, the production of anti-virus masks

1. Fill the respirator (Figure 10-2). Masks made of gauze or towel, filled with activated carbon or crushed lime, sawdust, charcoal, cotton and other filters, and then sew, cut from the ends of the gauze 30 cm ~ 50 cm openings, forming a headband.
2. Dipping masks. Dipping masks can be made by dipping medical liquids into ready-made masks or by dipping the dipping towel into a certain shape (Fig. 10-4). The liquid is generally a low concentration of lye or soapy water, and the fabric mask must be wrung out after it has been impregnated. To ensure airtightness, a pressure strip or two pieces of cotton or gauze should be added to the nose of the mask.

3. Wire frame sealing mask. Use a slightly thicker wire, combined with the shape of your mouth, nose, and face, to make an orphaned wire loop, fasten the straps, soak any thick cotton fabric in a thin baking soda solution, dry it slightly, and put it on the face. Add a layer of dry towel or handkerchief, and then stuff it into the wire frame and fasten it with a wire frame to fasten the fixing tape, which can play a certain anti-virus effect.

Third, the use of simple gas masks

Simple gas masks mainly include gas masks, canisters, antivirus glasses, and gas masks. Wearing requirements are as follows:

1. The most important thing to wear a simple gas mask is the air tightness requirement. Poor airtightness will result in the loss of filter ability. Therefore, you must wear masks, masks, and canisters as tightly as possible when you wear them, and avoid shaking when walking.
2. Immersion Masks To prevent irritation to the skin, a clean, soft cloth can be applied to the inner layer of the mask. To prevent the filter layer from directly adhering to the nose and mouth and to enlarge the filter area, it is also possible to insert some clean cloth in the mask. , cotton balls or handkerchiefs.
3. In order to ensure that the immersion mask is in a wet state, it is generally required to be impregnated and squeezed dry before use, installed in a closed plastic bag and effectively used within 10 hours.
(I) Training content
1. Simple gas mask inspection. The personnel of different groups checked each other's airtightness of self-made simple gas masks, the firmness of the laces, the suitability of the size, and reached conclusions and reported.
2. Simple gas mask wearing 50 meters training. Different people can use different anti-virus equipment made of homemade gas masks, such as dip masks, anti-virus glasses, transparent plastic film masks or canister masks. Wearing anti-respiratory and anti-ocular poisoning equipment should be worn first, and then wear a mask. After wearing it completely and tying it firmly, you can run 50 meters to experience the feeling and check the effect.
3. Remove gas mask bags. Lift the tie, remove the mask, prevent respiratory tract and anti-eye poisoning equipment and put them in the bag.
(2) Evaluation of training effects 1 The airtightness after wearing is good, and the ability to isolate and poison the virus is strong; 2 the belt is firm, and there is no loose and falling phenomenon in running; 3 The equipment configuration and wearing procedures are reasonable.

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