RU111440U1 - MEANS OF INDIVIDUAL PROTECTION OF HUMAN RESPIRATORY BODIES - Google Patents

Abstract

 An individual respiratory protective device containing a headband and fastening elements, a half-mask body made of a gas-tight elastic material, on which a central and two side holes are made, an exhalation valve seat with a rubber tab is installed in the central hole, inspiration valves are located in two side holes, each of which contains a saddle and a connecting unit for a filter element, made in the form of sealing cuffs of elastic material, on the housing the exhalation valve is secured by a protective shield made in the form of a chamber made of elastic material with one open end, characterized in that the headband is attached to the inserted insert of inelastic material located on the outside of the half mask body, while the insert has holes corresponding to the openings of the half mask body, inhalation and exhalation valves pass into the said openings of the insert, and inside the protective screen there is a frame providing stiffness and crease-proofness of the screen.

Description

The utility model relates to personal respiratory protective equipment and is intended for use in hazardous aerosols, vapors, and gases in a polluted environment.

Known personal protective equipment for human respiratory organs, containing a half mask of gas-tight elastic material and a hood made in the form of a bag of a non-combustible, gas-tight film (RU 2240160C1, А62В 18/04, 2004, RU 2214295C1, А62В 7/10, 2003 RU 65385 U1, A62B 15/00, 2007).

The closest in technical essence is a means of individual protection of the human respiratory system, containing a headband and. fasteners made of a gas-tight elastic material half-mask body, on which the central and two side holes are made, an exhalation valve seat with a rubber tab is installed in the central hole, inspiration valves are located in two side holes, each of which contains a saddle and a filter connection, on the body of the exhalation valve there is a protective shield made in the form of a chamber made of elastic material with one open end (RU 96488U1, АВВВ 15/00? 2010). The disadvantage of this device is the low reliability of protection.

The objective of the utility model is to increase the reliability of protection (increase the protective properties) and ease of use.

The task is achieved due to the following set of essential features. The individual respiratory protective equipment contains a headband and fastening elements, a half-mask body made of a gas-tight elastic material, on which a central and two side holes are made, an exhalation valve saddle with a rubber tab is installed in the central hole, inspiration valves are located in two side holes, each of which contains a saddle and a connecting unit for a filter element, made in the form of a sealing cuff of elastic material, on the valve body on the exhale, a protective shield is fixed, made in the form of a chamber of elastic material with one open end, the headband attached to an insert of inelastic material located on the outside of the half mask body, in which holes are made corresponding to the openings of the half mask body into which the inhalation valves pass and exhalation, and inside the protective screen there is a frame that provides stiffness and crease resistance of the screen.

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

figure 1 presents the appearance of the means worn on the head of a person,

figure 2 - half mask with a detailed implementation of the exhalation valve,

figure 3 - half mask with a detailed implementation of the inspiratory valve,

figure 4 - protective screen mounted on the exhalation valve,

figure 5 - frame,

figure 6 - insert.

Designations in the drawings:

1 half mask body,

2 protective screen,

3 saddles

4 washer

5 cuff

6 insert,

7 petal

8 headband

9 buckle,

10 frame

11 nut.

Half mask body made of gas-tight elastic material. On the half mask body there is one central and two side openings.

A saddle of an exhalation valve with a rubber lobe is installed in the central hole. To protect the petal of the exhalation valve, a protective screen 2, made in the form of a chamber, is made of elastic material with one open end.

Inside the protective screen 2 is a frame 10, which provides rigidity and crease resistance of the screen.

The respirator has a universal mounting system for filter boxes, which allows the user to independently install and replace filters of any brand with a standard diameter of ⌀80 ± 5 mm. In two side openings of the half-mask housing are connecting nodes 5 for filters. Each assembly consists of an inspiratory valve, a washer, and means for attaching filters, made in the form of a sealing cuff of elastic material, fastened together by a threaded connection. The inspiration valve is a saddle 3 with a petal 7. On the saddle there are four protrusions to form an air gap and increase the working surface of the filter. Washer 4 gives rigidity to the bottom of the glass.

The headband provides a snug fit half mask to the person's face. The headband 8 is a system of elastic straps, the upper of which provides tension in the direction from the nose to the back of the head, and the lower - in the direction from the chin to the parietal part of the head. More precise adjustment of the lower strap is due to the additional two buckles 9. The headband 8 is attached to the insert 6, made of inelastic (rigid, but flexible) material. Insert 6 passes through all three valve assemblies, providing better fixation and at the same time uniform fit of the half mask body to the face.

The insert 6 is located on the outside of the half mask body with the curved side down, combining all three holes, respectively. Then, saddles 3 are installed in the holes. A protective shield 2 is attached to the central saddle of the exhalation valve, directing the exhaled flow downward. In the protective shield 2 from the open end is inserted frame 10 so as not to overlap the saddle of the exhalation valve (see figure 2). The frame provides the stiffness of the protective screen, not allowing it to wrinkle and to press the valve petal and thereby prevent exhalation.

Thus, this tool is convenient to use and store, provides increased protective properties, as well as enhanced functionality due to the possibility of use by people with various sizes of face and head.

Claims (1)

An individual respiratory protective device containing a headband and fastening elements, a half-mask body made of a gas-tight elastic material, on which a central and two side holes are made, an exhalation valve seat with a rubber tab is installed in the central hole, inspiration valves are located in two side holes, each of which contains a saddle and a connecting unit for a filter element, made in the form of sealing cuffs of elastic material, on the housing the exhalation valve is secured by a protective shield made in the form of a chamber made of elastic material with one open end, characterized in that the headband is attached to the inserted insert of inelastic material located on the outside of the half mask body, while the insert has holes corresponding to the openings of the half mask body, inhalation and exhalation valves pass into the said openings of the insert, and inside the protective screen there is a frame providing stiffness and crease-proofness of the screen.