CN106422102A

CN106422102A - Expiratory valve used for respiratory protection device

Info

Publication number: CN106422102A
Application number: CN201510472448.8A
Authority: CN
Inventors: 王戈丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-08-05
Filing date: 2015-08-05
Publication date: 2017-02-22

Abstract

The invention discloses an expiratory valve used for a respiratory protection device. The expiratory valve comprises a through hole and a gas exhaust tube, wherein the through hole is formed in a proper position of a cover body of the respiratory protection device; the gas exhaust tube penetrates through the through hole; the edge of one end of the gas exhaust tube is fixedly connected to the edge of the through hole in a gastight mode, and the other end of the gas exhaust tube extends to the outer side of the cover body of the respiratory protection device; the gas exhaust tube is a hose which is made of thin, soft and gastight plastic, rubber or a composite material; the end, at the outer side of the cover body, of the hose is curled; part of the hose wall of the hose is fixedly arranged at the outer side of the cover body of the respiratory protection device; and a nose plug tube is connected with the through hole in the gastight mode. The expiratory valve disclosed by the invention has the advantages of being simple in structure, convenient to process, low in cost and the like, further has the characteristics of being flexible in design, neat in appearance and the like; and after the nose plug tube is additionally arranged, expiration and inspiration can be separately carried out, so that formation of a dead space is completely avoided, and the problems in the prior art are effectively solved.

Description

A kind of outlet valve for protective device for respiration

Technical field

The present invention relates to a kind of outlet valve, particularly a kind of outlet valve for protective device for respiration.

Background technology

Protective device for respiration is that have extensive purposes in routine work and life, in particular with The increase of haze weather, protective device for respiration even more becomes the main tool that people defend haze.

Mask or breathing mask are in order to have good filter effect it is necessary to possess good gas Close property, simultaneously additionally it is possible to smoothly discharge the gas of characteristics of contaminated respiratory droplets, is therefore keeping sealing Under the conditions of, how the gas in mask or breathing mask to be discharged as early as possible, become impact mask or One key factor of breathing mask performance quality.

For general mask, the gas major part of exhalation is discharged by mask periphery, In this case, when people's air-breathing, mask periphery will not recover good air-tightness immediately, Portion of air can enter from mask periphery, has had influence on the strainability of mask.

In order to solve problems, current common practice is to install on mask or breathing mask One check valve, for discharging the gas of exhalation, is no longer discharged by mask periphery, this is just It is so-called outlet valve；During air-breathing, this outlet valve can cut out, and extraneous gas only has through filtering Layer or inlet valve enter.

The primary structure of general outlet valve is valve block, and it is typically an air-locked laminated structure, Upon inhalation, this valve block periphery and mask main body are in close contact, and extraneous air can only be through mask Filtering material enter internal；Upon exhalation, form one between valve block outer rim and mask main body Gap, gas can be discharged from this gap.

There are a lot of problems in existing outlet valve, the expiration valve arrangement that is current is complex, material Material and production cost are higher；Two be existing outlet valve be by valve block outer rim seldom part and mask master The contact of body or separation, to realize sealing and aerofluxuss, during the opened/closed of valve block, just Inevitably have filtered air to enter；Three in order to increase the gas of exhalation it is necessary to Increase the area of outlet valve, which reduces effective filter area, increased in turn again Inspiratory resistance；Four, more or less all can there is certain dead space knot in existing protective device for respiration Structure, can cause large effect for some specific crowds.

Therefore how to provide that a structure is simple, dependable performance, low cost, setting flexibly Outlet valve additionally it is possible to avoid in protective device for respiration formed dead space, be need at present solve Problem.

Content of the invention

For overcoming the shortcoming of above-mentioned prior art, present invention is primarily targeted at providing a kind of knot The simple outlet valve of structure, for protective device for respiration.

Another object of the present invention is to providing a kind of outlet valve of low cost.

A further object of the present invention is to provide a kind of outlet valve of flexible design.

It is still another object of the present invention to provide a kind of do not have exhaling of dead space in protective device for respiration Air valve.

For reaching above and other purpose, the outlet valve of the present invention, comprise through hole, exhaustor, One through hole is opened on protective device for respiration cover body, an exhaustor passes through this through hole, aerofluxuss The edge of pipe one end is hermetic fixed in the edge of through hole, and the other end extends to respiratory protection The outside of device cover body.

This exhaustor is a flexible pipe, and this flexible pipe is by frivolous, soft, air-locked plastics, rubber Glue or composite are made, and this flexible pipe one end outside cover body is curly, and this flexible pipe Section tubular wall be fixed on the outside of protective device for respiration cover body.

Inside cover body one nasal obstruction pipe, is hermetic connected with through hole, this nasal obstruction pipe and Through hole connected mode is bonding or grafting, preferably inserting mode.

This outlet valve one or more are arranged on protective device for respiration.

In sum, compared with existing outlet valve, the outlet valve of the present invention have structure simple, Easy to process, low cost and other advantages, because the tube wall of exhaustor is frivolous, gas during expiration can Easily strut the tube wall of exhaustor, effectively reduce expiratory resistance, the size of this outlet valve, position Put and quantity can flexibly be arranged, and flat appearance, attractive in appearance, after installing nasal obstruction pipe additional, then can keep away Exempt to be formed dead space structure in respiratory protection, efficiently solve the problem of prior art presence.

Brief description

Fig. 1 is the sectional view when exhaling for the embodiment of the present invention 1；

Fig. 2 is the cut-away view in air-breathing for the embodiment of the present invention 1；

Fig. 3 is the sectional view when exhaling for the embodiment of the present invention 2；

Fig. 4 is the sectional view when embodiment of the present invention 2 user is exhaled.

Specific embodiment

Below in conjunction with the accompanying drawings, the present invention will be further described, the respiratory protection dress in the present invention Put including all kinds of masks and all kinds of breathing mask, in accompanying drawing, cover body 1 refers to cover in the material of mouth and nose Material or mask, this cover body 1 can be made up of single or multiple lift material, constitutes this cover body 1 Material does not limit, and cover body 1 is ventilative or gas impermeable material, or various types of filtration material；Cover body 1 Inner side refer to by when wearing with the side of facial contact, opposite side is then the outside of cover body 1.

Embodiment 1

Fig. 1 be the embodiment of the present invention 1 outlet valve exhale when schematic diagram.

As shown in figure 1, a through hole 11 is opened on cover body 1, one end insertion of exhaustor 12 This through hole 11, the tube wall that exhaustor 12 inserts one end is bubble-tight with the edge of through hole 11 It is fixed together, the remainder of exhaustor 12 is placed on the outside of cover body 1, exhaustor 12 Section tubular wall be fixed on the outside of cover body 1 by adhesive spots 10.

In the present embodiment 1, through hole 11 is circular, but is not limited, this through hole 11 Size, shape do not limit；This through hole 11 may be provided at any position of cover body 1, preferably It is arranged on the middle part of cover body 1, close mouth, the position of nose.

Exhaustor 12 is a flexible pipe, and it is made up of frivolous, soft, air-locked thin-film material, As plastics, rubber or composite etc..

Fig. 2 is schematic diagram during air-breathing.As shown in Fig. 2 exhaustor 12 is located at outside cover body 1 One end be curly, during air-breathing, in the presence of negative pressure, this end be closed state, and During breathing conversion, can more quickly close.

Exhaustor 12 can adopt gluing, ultra-sonic welded, card with the fixed connection mode of through hole 11 The mode such as connect.The caliber size of exhaustor 12 should with cover body 1 on through hole 11 bore phase Coupling.

The section tubular wall of exhaustor 12 is bonded on cover body 1, exhaustor 12 can be avoided to exhale It is drawn through Cheng Suiyi to swing；Prevented also from (air-breathing) during the negative pressure being formed in cover body 1, by this position Portion discharge pipe 12 in outside is drawn into the inner side of cover body 1.

The section tubular wall of exhaustor 12 can be bonding or riveting with the fixed form of cover body 1.

Substantially by an exhaustor 12, that is, flexible pipe is constituted the outlet valve of the present invention, as shown in figure 1, Exhaustor 12 one end is strutted by through hole 11, and when having certain pressure (during expiration), gas passes through This through hole 11 is discharged via exhaustor 12；As shown in Fig. 2 there is no gas via through hole 11 enter fashionable, or when carrying out air-breathing, the opening that exhaustor 12 is located at cover body 1 lateral ends is in close Close shape, gas cannot enter in exhaustor 12 by this end, therefore constitute a half-duplex channel Outlet valve, extraneous gas can only be entered by the filtering material on cover body 1.

Embodiment 2

Fig. 2 is the sectional view of the embodiment of the present invention 2, and embodiment 2 is on the basis of embodiment 1 On, increased one nasal obstruction pipe 13, by mouth air-breathing, nose exhale it is achieved that air-breathing with exhale Gas is taken their own roads, and thoroughly avoids formation dead space in protective device for respiration, maintains breathing anti- Protection unit is internal dry and comfortable comfortable.

As illustrated, being located at nasal obstruction pipe 13 one end of cover body 1 inner side, airtight with through hole 11 Property connect, this connected mode is bonding or grafting, preferably inserting mode, so this nasal obstruction pipe 13 Can be changed.

During use, the other end of this nasal obstruction pipe 13 will be inserted in nostril, and this end may be designed to difference Thickness, to adapt to different size of nostril, improves the comfortableness worn further.

When actually used, on cover body 1, setting two is by exhaustor 12, through hole 11 and nose The half-duplex channel that plug pipe 13 is constituted, one end of this two nasal obstruction pipes 13 is inserted respectively in nostril.

During user air-breathing, breathe through one's mouth, as general protective device for respiration, extraneous gas Can only be entered by the filtering material of cover body 1, if using nose, nasal cavity forms negative pressure, The tube wall of exhaustor 12 can press together, and exhaustor 12 front end can close, and extraneous gas is no Method enters into nasal cavity through exhaustor 12, and such user can only use face air-breathing.

As shown in figure 4, face closure when user is exhaled, outwards exhaled with nose, such gas Body passes through nasal cavity and discharges (as arrow in Fig. 4 via nasal obstruction pipe 13, through hole 11, exhaustor 12 Shown in head).

Therefore from the waste gas of characteristics of contaminated respiratory droplets, outside is vented directly to by nasal cavity, will not accumulate in and exhale Inhale inside preventer, completely eliminate dead space, and avoid the rising of temperature in preventer And moisture accumulation, further increase the comfortableness of user.

Claims

1. a kind of outlet valve for protective device for respiration, comprise through hole, exhaustor it is characterised in that：One through hole is opened on protective device for respiration cover body, an exhaustor inserts this through hole, the edge of exhaustor one end is hermetic fixed in the edge of through hole, the other end of exhaustor extends to the outside of protective device for respiration cover body.

2. outlet valve as claimed in claim 1 is it is characterised in that exhaustor is a flexible pipe.

3. outlet valve as claimed in claim 2 is it is characterised in that this flexible pipe is made up of frivolous, soft, air-locked plastics, rubber or composite.

4. outlet valve as claimed in claim 2 is it is characterised in that it is curly for being located at this flexible pipe one end outside cover body.

5. outlet valve as claimed in claim 2 is it is characterised in that a part of tube wall of this flexible pipe is fixed on the outside of protective device for respiration cover body.

6. outlet valve as claimed in claim 1, it is characterised in that being located at the nasal obstruction pipe inside cover body, is hermetic connected with through hole.

7. outlet valve as claimed in claim 6 is it is characterised in that nasal obstruction pipe is bonding or grafting with through hole connected mode, preferably inserting mode.

8. outlet valve as claimed in claim 1 is it is characterised in that arrange this outlet valve one or more on protective device for respiration.