Noise hazards exist in many operating environments.In this regard, workers need to use personal protective equipment to avoid or reduce the noise to the human body, protect the ear from excessive stimulation.
So what personal protection equipment can we use to protect our ears from noise?
1, Ear plugs
Earplugs are generally made of soft rubber (neoprene), soft plastic (POLYvinyl chloride resin), foamed plastic and silicone rubber and other materials. The shape of earplugs is mainly cylindrical and umbrella-shaped, and the common models are large, medium and small.To medium, high frequency noise has a better sound insulation effect, contrary to low frequency noise sound insulation effect is poor.
In addition, earplugs have the advantages of cheap, durable, compact, easy to carry and so on.However, it should be noted that the ear canal varies from person to person, so it is generally difficult to buy an earplug that completely fits the ear canal.Therefore, wearing inappropriate earplugs for a long time can make the ears uncomfortably, and even cause ear distention and ear canal pain.
2. Sound proof cotton
Sound proof cotton is a kind of ultrafine glass wool with diameter of 1~3 m, which is softened by chemical softening.To use, just tear off a piece with your hands, roll it into a cone and place it in your ear.The sound insulation effect of anti-sound cotton is better than that of ordinary cotton, and has better sound insulation effect on high-frequency noise.Therefore, anti-sound cotton is generally used in workshops where there is high frequency noise, but dialogue is required.
3, earmuffs
The structure of the earmuffs is: housing (made of hard plastic, hard rubber and metal plate)+ sealing washer (made of multi-brush soft foam and outer color POLYvinyl chloride film)+ rack + lining sound absorbing material.
The average earmuff volume is 15~25dB.It is mainly applied to the air dynamic noise generated by dynamic machinery, such as strong gun pulse noise, aviation engine noise, rock drill noise and internal combustion engine noise, as well as various pneumatic tools, riveting welding, stamping, cold working and other mechanical noise working environment.
Compared with earplugs, earmuffs are relatively large in size and inconvenient to wear. Especially when working in high temperature environment, wearers are more likely to feel hot and uncomfortable.
4. Sound helmet
Sound helmets are generally divided into two types: soft noise helmet and hard helmet.Among them, the soft anti-noise cap is mainly composed of artificial leather and earmuffs, and its main functions are sound insulation, shockproof, trauma and cold protection.The hard helmet is composed of a shell (made of fiberglass), a lining of sound absorbing material, and an ear cover, which can prevent the noise from passing through the air conduction and the skull to the inner ear, and reduce or avoid the damage caused by shock wave to the hearing and the head.The weight of helmet is relatively large, so it is easy to appear uncomfortable symptoms such as sultry, sweating, dizziness and dizziness when worn under high temperature environment.
5. Protective clothing
The protective clothing is made of glass steel or aluminum plate and lined with soft porous sound absorbent material, which is generally used to prevent the damage of high intensity noise above 14dB to human internal organs.
Noise is very common in our life.However, ppe is not required in every situation.In general, people living in high noise environment for a long time are advised to use personal protection products to avoid noise damage to the ear, which can lead to other diseases.So, I hope that the above share, to help you.