Self contained air respirator is a device used to provide normal air in special environment.It is mainly used in fire, toxic gas leakage, volatile liquid leakage, confined space and other areas where harmful gas or oxygen content is low.All fabrics of the straps and belts are fireproofFlame retardant materials, all metal connectors areStainless steel materialSo that the operator can eliminate potential safety hazards.
● The flow of the pressure regulating valve is the largest among similar products in China, reaching 450 L/min, to ensure sufficient gas supply under the most severe conditions;
● Belt tightening design in two different ways: horizontal or lateral (with national new utility patent), which fully reflects the design concept of "people-oriented";
● It has 3.0/4.7/6.8/9.0/2 × 6.8 L and other specifications of gas cylinders, which can be used in various applications in different places such as fire protection, petroleum, chemical and municipal construction;
● There are many different types of masks (UE/3S/H) and materials to choose from (Hycar/Silicon);The headband has five points and Easy Don;Meet the different needs of different users;
● A variety of supporting equipment is complete: a full set of professional testing equipmentAir compressor；
● There is a special reflector on the shoulder belt, so that the operator can be easily found by his peers in the dark, so that the operator can be protected to the greatest extent and is conducive to team cooperation;
● Multiple expansion functions can be quickly configured: three-way rescue, extended alarm, external air source switching and other functions can be combined arbitrarily;
● Extended alarm truly combines safety and effectiveness perfectly.
structure
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oneAir respiratormask: It is a large field window, and the window lens adoptspolycarbonateThe material has high transparency, strong abrasion resistance, and anti fog function. The mesh headdress style is comfortable and convenient to wear. The gel is made of silica gel, which is non-toxic, tasteless, and non irritating, and has good air tightness.
2. Air supply valve of air respirator: simple structure, strong function, large output flow, bypass output, small size.
3. Belt set of air respirator: buckle is locked and easy to adjust.
4. Quick connector of air respirator: small, can be operated by one hand, and has locking and anti falling function.
5. Air respiratorPressure reducer: Small volume, large flow, stable output pressure.
6. Bottle head valve of air respirator: It is equipped with high-pressure safety device and has small opening torque.
7. Air respirator back support: the design of the back support conforms to the ergonomic principle, and is composed ofcarbon fibreComposite material injection molding, withFlame retardantAnd anti-static function, light weight, strong, elastic pad lining the inside of the back, can make the wearer comfortable.
8. Shoulder belt of air respirator: made of flame retardant polyester fabric, with adjustable structure on both sides, so that the weight falls on the waist and crotch, reducing the compression of shoulder belt on the chest, and making breathing smooth.And there is a wide elastic pad on the shoulder belt to reduce the compression on the shoulder.
9. Pressure gauge of air respirator: large dial, night vision function, rubber protective cover.
10. Air respirator alarm whistle: placed in front of the chest, the alarm sound is easy to distinguish, small in size and light in weight.
11. Air respirator bottle belt group: the bottle belt clamp is a quick cam locking mechanism, and it ensures that the bottle belt is always in a closed loop state.The cylinder will not turn over.
12. Air respiratorGas cylinder: It is an aluminum liner carbon fiber fully wound composite cylinder with a working pressure of 30MPa, light weight, high strength and good safety performance. The cylinder valve is equipped with a high-pressure safety protection device[1]。
Inspection before use
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1. Turn on the air cylinder switch, and the storage pressure in the cylinder is generally 18~30MPa. With the increase of the pressure in the pipeline and the decompression system, the residual pressure alarm will be heard.
2. Close the cylinder valve and observe the change of the pressure gauge reading. Within 5min, the pressure gauge reading should not drop more than 2MPa, indicating that the gas supply pipeline has good high pressure air tightness.Otherwise, check the air tightness of each joint.
3. Gently press the supply valve diaphragm group through the lever of the supply valve to slowly discharge the air in the pipeline. When the pressure drops to 4~6MPa, the residual pressure alarm shall give an alarm sound and continuously sound until the indicated value of the pressure gauge is close to zero.Otherwise, the alarm shall be calibrated again.
4. Check whether the pressure gauge is damaged and whether its connection is firm.
5. Whether the medium pressure conduit is aged, cracked, leaking, firmly connected with the supply valve, quick connector and pressure reducer, and damaged.
6. Check whether the action of the supply valve is flexible, whether there are missing parts, whether the connection between it and the medium pressure conduit is firm and whether it is damaged.Whether the supply valve and exhalation valve match.Take the exhaler, open the cylinder switch, and press the supply valve lever to make it work.When aspirating, the supply valve shall supply air with obvious "sibilant" sound.When you exhale or hold your breath, the supply valve stops supplying air, and there is no "hissing" sound, indicating a good match.If the supply valve still supplies air when exhaling or holding, a "sibilant" sound can be heard, indicating that it is not matched. The ventilation resistance of the positive type air exhalation valve should be verified, or the full face mask should be replaced to make it meet the matching requirements.
7. Check whether the lens, tie, annular seal, exhalation valve and suction valve of the full face mask are intact, whether there are missing parts, and whether the connection position of the supply valve is correct and whether the connection is firm.The lens and other parts of the full cover should be clean, bright and free of dirt.Check whether the full face mask fits the face well and is airtight. The method is: turn off the air bottle switch, suck deeply several times, and suck up the remaining gas in the air respirator pipeline system.Keep negative pressure in the full mask. Under the action of atmospheric pressure, the full mask should move towards the human face, feelingdyspneaIt is proved that the full mask and exhalation valve have good air tightness.
8. Whether the air cylinder is firmly fixed and whether it is firmly and airtight connected with the pressure reducer.Whether the straps and waistbands are in good condition, and whether there are fractures, etc[2]。
Wear
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1. Check the pressure of the gas cylinder, and make sure that the gas cylinder is intact and fixed on the back plate;
2. Open the cylinder valve and make sure that the pointer of the chest pressure gauge is within the green grid;
3. Check whether there is leakage on the whole respirator and ensure that the alarm siren can alarm normally;
4. Carefully check whether the valves to be supplied and bypass valves work normally;
5. Check the mask group to ensure that the mask is intact without leakage;
6. Take out the respirator, put two arms into the left and right braces respectively, and place the backboard on the back;
7. Pull the belt in front of the body forward, and adjust the shoulder belt with shoulder movements until it can be firmly against the back. The shoulder belt should not be too tight, and it is better to feel that the weight should be borne by the back;
8. Fasten the belt buckle until it is comfortable, and adjust the strap again until it is properly distributed on the back;
9. Open the air bottle and let the air fill the whole respiratory system;
10. Put on the mask and adjust the headband to make the mask fully stick to the face;
11. Take out the supply valve from the waist retainer and insert it into the air breathing mechanism on the mask. When you hear a "click", it means the connection is in place;
12. Take a quick deep breath and start to open the breathing valve, breathe repeatedly several times to determine the air flow;
13. Work safely and effectively in various environments with toxic gas, thick smoke and oxygen deficiency;
14. When the pressure of the gas cylinder drops to 5-6MPa, the alarm siren will alarm automatically. The operation can be resumed only after the gas cylinder is evacuated to a safe area and replaced again.
Maintenance and storage
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maintain
1. For the used air respirator, first restore the respirator to the standby state;
2. Replace the air cylinder when the pressure is lower than 15MPa;
3. Clean all parts as necessary. Some parts need to be disinfected and decontaminated by special processes;
4. Carefully check whether there is any damage to the parts. If there is any fault, contact the responsible department for handling[3]。
safekeeping
1. It must be stored in a cool, clean and dry place;
2. When storing the air respirator, the air cylinder should bear the weight and the back frame should face upward;
3. If the air respirator is in standby status, it should be checked once a month;
4. When storing, the mask shall not be squeezed, the high pressure and medium pressure pipelines shall not be bent by small arcs, and the pressure gauge case shall not be pressed.
Safety precautions
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1. When using the air respirator, when the air flow suddenly feels blocked, the bypass valve should be turned counterclockwise in time to increase the air flow, retreat to a safe area, remove the air respirator, and conduct a comprehensive inspection;
2. If the suction action of the air respirator fails during use, press the black manual switch button, open the air circuit and retreat to a safe area for inspection;
3. When the pressure drops to the alarm point during use, the alarm will automatically start. You should leave the work site, retreat to a safe area, and continue working after replacing the new air bottle;
4. It is forbidden to disassemble the air respirator without permission. The responsible department shall be notified to assign qualified personnel to repair the damaged parts;
5. It is strictly prohibited to fill expired and expired air bottles, and it is absolutely prohibited to use modified air bottles;
6. Regular validation every three years;
7. Compulsory scrapping of gas cylinders after 15 years of service[3]。
application
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The air respirator is a new type of filtering equipment developed in recent years at home and abroad.It can filter out particles and bacteria of more than 0.22um of liquid. It has the advantages of high filtration precision, fast filtration speed, less adsorption, no medium shedding, acid and alkali corrosion resistance, high temperature resistance, convenient operation, etc.Now it is widely used in medicine, chemical industry, electronics, beverage, fruit wine, biochemical water treatment, environmental protection and other industries.
technical parameter
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Material: 304, 316L;
Filtering precision (um): 0.22-100;
Filtration capacity (t/h): 0.2;
Filter element length (m/m): 5 inches, 10 inches[1]。
