What we usually call noise pollution is man-made. From a physiological point of view, all sounds that interfere with people’s rest, study and work, and the sounds we want to hear, that is, unwanted sounds, are collectively called noise. When noise has adverse effects on people and the surrounding environment, noise pollution is formed.
Noise not only causes hearing damage, interferes with people’s life and work, but can also induce a variety of cancer-causing and fatal diseases. Noise can cause neurasthenia symptoms such as headache, brain swelling, tinnitus, insomnia, general fatigue, and memory loss. People who work in a high-noise environment for a long time have two to three times higher incidences of hypertension, arteriosclerosis and coronary heart disease than those in low-noise environments. Noise can also cause digestive system dysfunction, causing indigestion, loss of appetite, nausea and vomiting, and increasing the incidence of gastrointestinal and ulcer diseases.
The best measure to protect hearing is to control the sound source. When the noise cannot be reduced to a safe limit, people exposed to noise should be equipped with hearing protection equipment. That is, soft plastic, rubber, sound insulation and sound absorption materials are used to make a certain shape to cover the auricle or close the external auditory canal to achieve the effect of sound insulation and sound absorption attenuation of sound wave intensity. At present, personal protective equipment used to prevent noise hazards commonly includes earplugs and earmuffs.
So when choosing hearing protection products, what is the difference between earplugs and earmuffs?
1. The definition of the article is different.
(1) Earplugs are sound insulation materials that can be inserted into the external auditory canal . According to performance, it is divided into two types: foam type and preformed type.
-Foam earplugs use foamed materials, and the rebound speed is relatively slow after squashing, allowing enough time to insert the rubbed and small earplugs into the ear canal, and the earplugs slowly expand to block the external auditory canal for sound insulation purposes.
-Pre-formed earplugs are made of synthetic materials (such as rubber, silicone, polyester, etc.), pre-molded into certain shapes, and can be directly inserted into the ear canal.
(2) The shape of the earmuffs is like earphones. Use a sound-proof cover to cover the outer earmuffs. Between the earmuffs, use a headband or neckband with appropriate clamping force to fix the earmuffs on the head. The slot is used in conjunction with the safety helmet.
2. Different features of supplies
Small size, easy to carry, but also easy to lose (you can choose earplugs with wire to solve);
Does not hinder the wearing of other protective equipment ;
In a hot and humid environment, it is more comfortable to wear for a long time than earmuffs;
Wearing earplugs requires certain skills, and the user needs to be trained;
Foam earplugs need to be rubbed by hand, not suitable for people with dirty hands. use.
The wearing method is simpler than earplugs, and the wearing position is stable;
The volume is large, and it may conflict with other protective equipment (hard hats, glasses, respirators, etc.);
Outdoor and cold workers can use it to keep warm at the same time;
The service life is long, and maintenance is usually required.
3. Different wearing methods
Wash your hands before wearing foam earplugs;
When wearing earplugs on your left ear, use your left hand to flatten and knead the earplugs Thin, while pulling the left ear auricle from the back of the head with the right hand, straighten the ear canal as much as possible, and at the same time use the left hand to insert the earplug into the ear canal. After the earplug is inflated, the ear canal is formed to block the ear canal;
ÓÃWear the right ear plug in the same way;
When wearing the pre-formed ear plug, you must also open the ear canal by hand. You don’t need to rub the ear plug before inserting it, and insert the ear plug directly into the ear canal.
Adjust the position of the earmuff cups on the headband and neckband so that the two ears are in the center of the cup and completely cover the auricle;
The headband should be placed vertically on the top of the head;[ br] Hair, beard, earrings, etc. may affect the sealing of the earmuffs. Try to move the hair to a suitable position. If the earrings affect the sealing, the earrings should be removed to ensure the sealing of the earmuff gasket.
4. Different maintenance and replacement methods
Earplugs that cannot be washed should be discarded when they are dirty or damaged, and replaced with new ones;
Can be washed, but The reusable earplugs should be replaced when they are damaged or deformed;
After cleaning, the earplugs should be placed in a ventilated place to dry naturally and not exposed to the sun;
The earmuff gaskets can be cloth Wipe clean with soapy water, do not soak the entire earmuffs in water, and avoid contact with chemical substances as much as possible;
The earmuff gaskets will age or break after long-term use, and the accessories should be replaced in time according to the manufacturer’s recommendations;
ears After the headband of the hood becomes loose, it will not fit well, and new earmuffs need to be replaced;
The earmuffs should be stored in a clean, dry environment, and avoid direct sunlight.
In short, use earplugs in hot and humid environments, and earmuffs in outdoor or cold environments; earplugs have a short lifespan and earmuffs have a long life. I hope today’s article can help you to choose the right hearing protection products for you.