RU124159U1 - MEANS OF INDIVIDUAL PROTECTION OF HUMAN RESPIRATORY BODIES - Google Patents

Abstract

1. Personal respiratory protective equipment, containing the obturator of the nasal cavity of a gas-tight elastic material, on which the valve body of the inhalation and exhalation and means for attaching filtering and absorbing elements are fixed, a hood made in the form of a bag of transparent, at least in the region eye, non-combustible, gas-tight film having holes for attachment to the obturator of the nasal cavity, tightly worn on the valve body of the inspiration and exhalation, headband, providing a tight fit genitour of the obturator of the nasal cavity to the person’s face, characterized in that the headband contains an elastic braid located inside the hood, each end of which is attached to one of the upper edges of the inelastic insert, which are connected to the top of the back of the hood, the lower end of the inelastic insert is attached to the hood at the neck level and the second elastic band, which provides the obturator tension in the direction from the mouth area below the ears to the neck, is located outside the hood. 2. The tool according to claim 1, characterized in that the second elastic braid is made with the possibility of adjusting the length.

Description

The utility model relates to personal respiratory protection (PPE) of a person and is intended for use in a polluted environment with harmful aerosols, vapors, gases.

Known personal protective equipment for human respiratory organs, containing a half mask of a gas-tight elastic material and a hood made in the form of a bag of a non-combustible, gas-tight film (RU 224016 C1, А62В 18/04, 2004, RU 2214295 C1, А62В 7 / 10,2003 RU 65385 U1, A62B 15/00, 2007).

The closest in technical essence is the human RPM, containing the obturator of the nasal cavity of a gas-tight elastic material, on which the valve body of the inhale and exhale and the means for attaching the filter-absorbing elements are fixed, the hood, made in the form of a bag of transparent, at least in the region eye, non-combustible, gas-tight film having holes for attachment to the obturator of the nasal cavity, tightly worn on the valve body of the inspiration and exhalation, headband, providing tight e fit shutter rotonosovoy cavity to the human person (RU 65385 U1, A62B 15/00, 2007).

The disadvantage of the prototype is the inconvenience of its use for people with different head sizes and insufficient protective properties.

Adjusting the fit of the obturator to the wearer's face using an elastic cord (braid) for people with different face sizes is a relatively difficult operation, especially for an unprepared user, especially in an emergency.

The presence of an elastic cord (braid), which allows you to adjust the size of the cervical obturator by pulling it along the edge of the hood, suggests making the hood of soft, easily deformable materials that can be tightened. However, a hood made of such a material may not always provide an acceptable level of sealing of the interior.

The technical result from the use of RPD is to increase the protective properties and increase ease of use.

The task is achieved due to the following set of essential features: SIZOD, containing the obturator of the nasal cavity of a gas-tight elastic material, on which the valve body of the inhale and exhale and means for attaching the filters are fixed, the hood, made in the form of a bag of transparent, at least in the region eye, non-combustible, gas-tight film having holes for attachment to the obturator of the nasal cavity, tightly worn on the valve body of the inspiration and exhalation, headband, providing a different fit of the obturator of the nasal cavity to the person’s face, characterized in that the headband contains an elastic braid located inside the hood, each end of which is attached to one of the upper edges of the inelastic insert, which are connected to the top of the back of the hood, the lower end of the inelastic insert is attached to the hood at a level neck, and the second elastic braid, providing the shutter tension in the direction from the mouth below the ears to the neck, is located outside the hood.

Private essential features are:

- the second elastic braid is made with the possibility of adjusting the length.

The essence of the utility model is illustrated by drawings, where:

figure 1 presents a General view of the device,

figure 2 - arrangement of external braid,

figure 3 - arrangement of the inner braid.

The hood 1 is made in the form of a bag of a transparent, non-combustible, gas-tight, durable polymer film.

The hood 1 has an obturator 3 of the nasal cavity, which performs the following functions:

- provides isolation of the respiratory system (mouth and nose) of a person from the external environment;

- provides air to the respiratory system through the filter 2;

- is a bearing element on which other parts of the self-rescuer are fixed: headband, hood, inspiratory and expiratory valves, cuffs for attaching filters.

There are three holes in the front of the shutter. In the middle hole, an exhalation valve 4 is attached with a valve cover. To two side openings with the help of inspiration valves - cuffs 5, into which filters 6 are inserted.

At the level of the side holes on the outside, one loops 11 with buckles 12 are fastened to the case, into which the ends of the outer braid of the headband are inserted 8. The buckles 12 allow you to manually adjust the length of the braid.

The ends of the inner braid 10 are attached to similar loops 13 from the inside. A guide insert 9 of inelastic material is attached to the rear part inside the hood 1, which is fastened only in the upper and lower parts of the hood, while the lower part of the insert itself may be narrower.

That part of the inner braid 10, which should be on the crown after donning, is sewn to the insert, closer to its top. Here, the width of the insert should be such that the side parts of the braid are spaced apart to a distance that allows the passage of the head when donning. It is in this case that it turns out that the insert 9 and the inner braid 10 are snug against the head, and the back of the body moves away a certain distance.

In fact, it turns out the inner cap, where you need to insert the head when putting it on, and the hood does not fit on the head, since it is attached to this cap only at the upper corners of the insert and its lower part. As a result, an air layer is formed, which provides improved protection against thermal factors.

The hood is attached to the obturator of the nasal cavity at the locations of the three holes on the body of the inspiratory and expiratory valves. The tightness of the joints is ensured by the clamping of the polymer film of the hood between two elastic materials of the obturator of the nasal cavity and the lining of the inspiratory and expiratory valves, half mask and cuffs for attaching the filters.

The holes for attaching the hood and the underside of the hood are reinforced with additional polymer tape to give them high tensile strength.

The lower part of the hood is equipped with a cervical obturator 7, which provides a tight fit of the hood to the neck of a person in order to prevent the passage of untreated air under the hood during breathing.

Inhalation valves are designed to prevent the entry of exhaled air into the mask space. In addition, the valve bodies are used for attaching a hood and cuffs for attaching filters to them.

Valve bodies are made of hard plastic, valve membranes are made of elastic polymer material.

The exhalation valve is designed to release air exhaled by a person into the atmosphere at the time of exhalation and to prevent the entry of untreated air into the mouth and nose at the time of inhalation.

Cuffs in the form of glasses made of elastic polymer material are designed for fastening filters in them. Elastic polymer material provides the necessary tightness between the inner surface of the cuff and the filter housing.

The cuffs are mounted on the sides of the nasal obturator on the inspiration valve bodies. The diameter of the cushioning ring is 0.75 of the diameter of the bottom of the cuff, which ensures that it is not stretched in the horizontal direction. The locking ring serves to compress the elastic materials of the obturator of the nasal cavity and cuff to the polymer film of the hood between them.

On the locking ring there are protrusions that provide a guaranteed gap between the filter housing and the bottom of the cuff, which is necessary for an even distribution of pressure in the space behind the filter (breathing chamber).

Filters are made in the form of, for example, round boxes of polymer material. Each element contains an anti-aerosol filter for cleaning inhaled air from solid and liquid aerosols and a combined charge for absorbing vapors and gases. Depending on the purpose of the protective device, by changing the composition of the charge, universal self-rescuers can be created that provide comprehensive protection against carbon monoxide, organic, inorganic acidic, inorganic basic substances, and special self-rescuers can be used to protect against specific dangerous chemicals or certain groups of substances.

Thus, this tool is convenient to use, storage, provides increased protective properties, as well as improving the usability of people with different sizes of face and head.

Claims (2)

1. Personal respiratory protective equipment, containing the obturator of the nasal cavity of a gas-tight elastic material, on which the valve body of the inhalation and exhalation and means for attaching filtering and absorbing elements are fixed, a hood made in the form of a bag of transparent, at least in the region eye, non-combustible, gas-tight film having holes for attachment to the obturator of the nasal cavity, tightly worn on the valve body of the inspiration and exhalation, headband, providing a tight fit genitals of the obturator of the nasal cavity to the person’s face, characterized in that the headband contains an elastic braid located inside the hood, each end of which is attached to one of the upper edges of the inelastic insert, which are connected to the top of the back of the hood, the lower end of the inelastic insert is attached to the hood at the neck level and the second elastic band, which provides the obturator tension in the direction from the mouth area below the ears to the neck, is located outside the hood. 2. The tool according to claim 1, characterized in that the second elastic braid is made with the possibility of adjusting the length.

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