CN111202283A

CN111202283A - Mask

Info

Publication number: CN111202283A
Application number: CN202010177360.4A
Authority: CN
Inventors: 刘光林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-05-29

Abstract

The invention discloses a mask, which comprises a mask body, wherein a humidity detection device is arranged on the mask body, the humidity detection device comprises a first breather valve, a mask body and a humidity card, the first breather valve is arranged on the mask body, a closed cavity is formed between the mask body and the first breather valve, the outlet end of a valve plate of the first breather valve is communicated with the cavity, the humidity card is arranged on the mask body and is positioned in the cavity, and the mask body positioned on the outer side of the humidity card is made of transparent materials. The one-way flow design of first breather valve can be that the gas of user's exhalation flows along a direction, avoids taking place the phenomenon of backflowing, effectively improves the security of gauze mask, and the gas of user exhalation when using, this gas gets into the cavity through first breather valve in, when humidity in the cavity reaches the certain degree, the colour that the user can observe the humidity card through the cover body can change, and the warning user that can be timely changes the gauze mask.

Description

Mask

Technical Field

The invention relates to the field of protective devices, in particular to a mask.

Background

Generally, the device is worn on the mouth and nose to filter air entering the mouth and nose, so as to prevent harmful gas, smell and spray from entering and exiting the mouth and nose of a wearer, and is made of melt-blown cloth or non-woven fabric. The mask has a certain filtering function on air entering the lung, and has a very good effect when being worn in an operation in an environment polluted by viruses, bacteria, dust and the like when respiratory infectious diseases are epidemic. The mask can be divided into a planar mask and a three-dimensional mask. As shown in fig. 1, the existing mask comprises a mask filtering part 100 and a fixing rope 200, wherein the filtering part is made of melt-blown cloth or non-woven fabric, the humidity of the filtering part 100 of the existing mask can be increased after the existing mask is worn for a period of time, the filtering effect and the safety performance (easy to breed bacteria) of the existing mask can be greatly reduced, and the mask needs to be replaced with a new mask. Therefore, the mask is replaced after a period of use, and the mask is replaced within four hours as a rule of one time. Because the existing mask has no detection device, the existing mask can not be visually judged from the outside, only a user knows the use time, if the user forgets to wear the mask all the time, the purpose of protection can not be achieved, and hidden dangers can be brought to the body of the user. How to solve the technical problems becomes a difficult problem to be solved urgently.

Disclosure of Invention

The invention aims to provide a mask which can judge the wearing time of the mask by measuring humidity so as to solve the problems mentioned in the background technology.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a mask comprises a mask body, wherein the mask body can be an existing mask or an intermediate production component of the mask, such as a filter part (melt-blown cloth or non-woven fabric and the like) without a fixing device, a humidity detection device is arranged on the mask body and comprises a first breather valve, a mask body and a humidity card, the first breather valve is arranged on the mask body, the one-way flow design of the first breather valve can enable gas exhaled by a user to flow along one direction, the backflow phenomenon is avoided, the safety of the mask is effectively improved, the first breather valve is arranged on the mask body in a penetrating mode, the inlet end of the first breather valve faces the user, the outlet end of the first breather valve is communicated with a cavity, the mask body is arranged on the first breather valve, an airtight cavity is formed between the mask body and the first breather valve, and the outlet end of a valve block of the first breather valve is communicated with the cavity, the gas of first breather valve exhalation flows extremely through the valve block outlet end of first breather valve in the cavity, the humidity card is installed on the cover body and is located in the cavity, the cover body is whole to be transparent material or only transparent at the cover body that is located humidity card position, makes things convenient for the people to observe. The user is in the gas of exhalation when using, and this gas gets into the cavity through first breather valve in, when humidity in the cavity reached the certain degree, the humidity card discolours along with the humidity difference, and the user can observe the colour meeting of humidity card with regard to accessible translucent cover body or transparent position directly perceivedly, reaches the purpose that timely warning user changes the gauze mask.

Humidity cards are known products that change from a dry color to a hygroscopic color when the humidity of the environment reaches or is marked with a numerical value on an indicator point on the humidity indicator card. When the color of the indicated point changes to the designated color, the value in the point is the humidity value of the current environment.

The second technical scheme is that the mask further comprises a second breather valve, wherein the second breather valve is installed on the mask body, and a closed cavity is formed by the second breather valve, the mask body and the first breather valve.

Preferably, the valve plate opening pressure of the second breather valve is greater than or equal to the valve plate opening pressure of the first breather valve.

Because the cavity is inclosed, the humidity card does not receive external environment's influence, and first breather valve, second breather valve are the check valve, and when the gaseous valve block exit end that passes through first breather valve of user's exhalation got into the cavity, the moisture in the temperature card in time absorbed gas, can open the valve block of second breather valve when the gas volume in the cavity reaches the saturation to discharge, in the instant closing again, avoid external environment to influence. Thereby ensuring that the humidity card can fully display the timely color change according to the moisture in the exhaled air. When the valve block opening pressure of the second breather valve is greater than that of the first breather valve, the valve block opening of the second breather valve can delay, so that the humidity card can sense moisture in the exhaled air for a long time, and the accuracy of the color change of the humidity card is ensured. The valve block opening pressure of second breather valve equals the valve block opening pressure of first breather valve, and the gas that the user expired can at first contact with the humidity card after getting into the cavity through the valve block exit end of first breather valve, because the cavity has certain space, so the valve block of second breather valve is opened and is also had the delay of a period, discharges the gas in the cavity, does not influence the moisture absorption of humidity card and discolours.

Preferably, the outlet end of the valve plate of the first breather valve is clamped on the same horizontal line with the humidity, and the second breather valve is positioned below the first breather valve. Set up like this and guarantee the function of discolouing of humidity card, the valve block entering cavity of the gaseous valve block through first breather valve of user's exhalation at first contacts with the humidity card, then discharges from the second breather valve of below.

Furthermore, the cover body is in a semi-circular shell shape, a square shape, a round shape or other geometric shapes, the shape is smooth, no sharp bulge exists, and potential safety hazards are small.

Furthermore, the cover body is made of polypropylene, polyvinyl chloride or polystyrene, and the cover body is economical and low in cost.

Compared with the prior art, the invention has the advantages that:

because the breather valve can guarantee that the storage space is isolated from the atmosphere within a certain pressure range and can be communicated with the atmosphere (breathe) when exceeding the pressure range, when the breather valve is not used, namely when the mask is not worn in the application, the first breather valve and the second breather valve are both in a closed state, the sealing of the cavity is guaranteed, and the humidity card is protected from being influenced by the external environment.

The user is in the gas of exhalation when using, and this gas gets into the cavity through first breather valve in, when humidity in the cavity reached the certain degree, the colour change can take place for the humidity card, and the user can observe the colour of humidity card through the cover body and can change, and the warning user that can be timely changes the gauze mask.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a conventional mask;

fig. 2 is a cross-sectional view of a mask in accordance with a first embodiment of the present invention;

fig. 3 is a sectional view of a mask according to a second embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.

The first embodiment is as follows:

referring to fig. 2, a mask comprises a mask body 1, the mask body 1 may be an existing whole mask or an intermediate production component of the mask, such as a filter part without a fixing rope, the mask body 1 is provided with a humidity detection device, the humidity detection device includes a first breather valve 2, a mask body 3 and a humidity card 4, the humidity card reading part is made of a transparent material, since the first breather valve is unidirectional and the humidity card is located in a closed cavity, the design ensures the accuracy of humidity measurement in the cavity, the breather valve has irreversibility and is not subject to the external environment, the humidity card 4 is an existing product, technicians in the field can purchase the mask from the outside, the humidity card 4 suitable for the use time and the humidity change of the mask can be selected according to the use condition of the mask, when a user wears the mask for four hours continuously, the temperature card changes from colorless to red for a longer time, the darker the color becomes, so that whether the outlet cover needs to be scrapped or replaced can be intuitively judged according to the color; the bystander can also remind at any time, thereby avoiding the overlong wearing time of the user.

The mask body 3 is preferably mounted on the first breather valve 2 by other mounting methods such as gluing, welding or thread structure, and the connection method is the existing structure, and not described in detail herein, the first breather valve 2 is mounted on the mask body 1, and is generally directly adhered to the outer side surface of the mask body 1 by gluing (as shown in fig. 3), and may also be penetratingly disposed on the mask body 1 (as shown in fig. 2). The unidirectional flow design of the first breather valve 2 can ensure that the gas exhaled by a user flows along one direction, so that the phenomenon of backflow is avoided, and the safety of the mask is effectively improved. Valve block exit end and cavity intercommunication of first breather valve 2, the cover body 3 is installed on first breather valve 2, and the cover body 3 with first breather valve 2 forms inclosed cavity, the exit end of first breather valve 2 with the cavity intercommunication, humidity card 4 is installed on the cover body 3 and is located in the cavity, the cover body 3 is transparent material or partial transparent material, and the user is the gas of exhalation when using, and this gas gets into in the cavity through first breather valve 2, and when humidity in the cavity reached the certain degree, the user can observe the colour of humidity card 4 through the cover body 3 and can change, and the warning user that can be timely changes the gauze mask.

In this embodiment, the cover body 3 is in a shape of a semicircular shell, a square, a circle or other geometric shapes, and the shape is smooth, without a sharp protruding part, and has small potential safety hazard.

In this embodiment, the cover body 3 is made of polypropylene, polyvinyl chloride or polystyrene, and the material is economical and low in cost.

Example two:

referring to fig. 3, the present embodiment is substantially the same as the first embodiment, except that the present embodiment further includes a second breather valve 5, the second breather valve 5 is installed on the mask body 3, and when the first breather valve 2 and the second breather valve 5 do not work, a closed chamber is formed by the second breather valve 5, the mask body 3, and the first breather valve 2.

The valve plate opening pressure of the second breather valve 5 is larger than or equal to the valve plate opening pressure of the first breather valve 2.

Preferably, the outlet end of the valve plate of the first breather valve 2 is on the same horizontal line with the humidity card 4, and the second breather valve 5 is located below the first breather valve 2. When the humidity card is used, gas exhaled by a user enters the cavity through the valve plate of the first breather valve 2, is firstly contacted with the humidity card 4 and then is discharged from the second breather valve 5 below, so that the exhalation resistance is reduced, the breathing is smoother, and the gas exhaled by the user can smoothly enter the cavity; meanwhile, the humidity card 4 can sense moisture at any time to change color. Thereby the user can observe the colour change of humidity card 4 through cover body 3, and the warning user that can be timely changes the gauze mask.

Because first breather valve 2, the second breather valve 5 that use in this application all are one-way, can form confined space when out of work, just so can guarantee the measuring accuracy of indoor humidity card, and gaseous can not reverse flow to can not receive external environment influence.

This is the working principle of the mask, and the details not described in the present specification are the prior art known to those skilled in the art.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, the owner of the patent may make various changes or modifications within the scope of the appended claims, such as routine replacement of the specific structure of the two breathing valves, as long as the output gas of the two breathing valves in one direction does not exceed the protection scope of the present invention, and in addition, the breathing valves in the present embodiment have different names, such as exhalation valve, one-way valve, etc., as long as the technical effects achieved are the same, and all the changes or modifications are within the protection scope of the present invention.

Claims

1. The utility model provides a mask, includes mask main part (1), its characterized in that, be equipped with humidity detection device on mask main part (1), humidity detection device includes first breather valve (2), the cover body (3) and humidity card (4), install first breather valve (2) on mask main part (1), the cover body (3) is installed on first breather valve (2) and cover body (3) with form inclosed cavity between first breather valve (2), the valve block exit end of first breather valve (2) with the cavity intercommunication, humidity card (4) are installed on the cover body (3) and are located in the cavity, are located cover body (3) in the humidity card (4) outside are transparent material.

2. Mask according to claim 1, characterized in that it further comprises a second breather valve (5), said second breather valve (5) being mounted on said mask body (3), a closed chamber being formed by the second breather valve (5), the mask body (3) and the first breather valve (2).

3. Mask according to claim 2, characterized in that the opening pressure of the valve plate of the second breathing valve (5) is greater than or equal to the opening pressure of the valve plate of the first breathing valve (2).

4. Mask according to claim 2, characterized in that the outlet end of the valve plate of the first breather valve (2) is on the same horizontal line with the humidity card (4), and the second breather valve (5) is located below the first breather valve (2).

5. Mask according to claim 1 or 2, characterized in that the mask body (3) is square, circular or semi-circular shell shaped.

6. Mask according to claim 1 or 2, characterized in that the material of the mask body (3) is polypropylene, polyvinyl chloride or polystyrene.