CN111728289A

CN111728289A - Reusable protective mask

Info

Publication number: CN111728289A
Application number: CN202010089418.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Hubei Zhiquan Patent Technology Application Development Co ltd
Current assignee: Hubei Zhiquan Patent Technology Application Development Co ltd
Priority date: 2020-02-12
Filing date: 2020-02-12
Publication date: 2020-10-02

Abstract

A reusable protective mask comprises a mask support body, a sealing sleeve and filter cloth, wherein the sealing sleeve is connected to the mask support body close to the mask opening of the cheek, it is characterized in that one side of the mask supporting body is provided with a filter material cylinder, the other side of the mask supporting body is provided with a material collecting cylinder, the mask supporting body between the filter material cylinder and the material receiving cylinder is provided with a mask opening, the filter material cylinder is internally provided with a filter material roll formed by winding filter cloth, the filter material cylinder is provided with a feeding strip-shaped hole, the material receiving cylinder is internally provided with a material receiving main shaft, the filter cloth passes through the feeding strip-shaped hole and covers the opening of the mask, the outer end part of the filter cloth is wound on the material receiving main shaft, the receiving main shaft penetrates through any end face of the receiving barrel or is connected with a driving shaft penetrating through any end face of the receiving barrel, a supporting net is arranged in the opening of the mask, and the opening of the mask is covered with a breathable mask. The mask disclosed by the invention is matched with an independent filter material roll for use, and completely meets or exceeds the domestic standard and the standard established abroad. Meanwhile, the special structure is adopted, and the device has the characteristics of convenience, safety, high efficiency, economy, environmental protection, comfort, accuracy and the like.

Description

Reusable protective mask

Technical Field

The invention relates to the technical field of human body breathing protection, in particular to a reusable protective mask.

Background

The existing disposable medical mask, medical surgical mask and the like are disposable, once the mask is taken off, the mask cannot be reused, and a new mask needs to be replaced, so that the use cost is too high. In addition, masks such as disposable medical masks and medical surgical masks are not sufficiently sealed, and people are still at risk of virus infection during careless wearing.

The publicly known N95 mask (one of the 9 particulate-proof masks approved by the national institute of occupational safety and health) is only reusable for a limited number of times, and reuse results in a severe reduction in filtration efficiency and an increased risk of infection.

In general, the structure of the mask is not complex, the daily yield is not low, but the outbreak of serious infectious diseases such as new coronavirus and the like often breaks the balance of the mask requirements, so that people 'feel difficult with one mask'. Further, medical waste is increased rapidly due to a large amount of mask consumption, and the discarded masks may become a secondary pollution source.

On the other hand, when the mask is used for preventing viral infection, the captured droplets containing infectious viruses and the like adhere to the outer surface of the mask, and if the surface is touched with fingers carelessly, the droplets may be infected with droplets having an infectious activity.

Although, we searched for many patents related to reusable masks from professional search software such as sopat. However, according to the technical solutions disclosed in these patents, the mode of replacing the single filter disc is often adopted for reuse, but the above-mentioned mode has the biggest problem of troublesome operation, the mask must be removed and the inside and outside of the mask must be disinfected once while the filter disc is replaced, and the filter disc is inconvenient to carry, so that the risk of loss or pollution exists.

Therefore, the existing mask has various technical problems including the above problems, and is not suitable for the use requirements of people on convenience, safety, high efficiency and economy.

Disclosure of Invention

The invention aims to provide a reusable protective mask to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a protective facial mask that can used repeatedly, includes gauze mask supporter, seal cover, filter cloth, the gauze mask supporter is close to the cover mouth department of cheek and is connected with the seal cover, characterized by, and gauze mask supporter one side is equipped with the filter cylinder, and gauze mask supporter opposite side is equipped with the receipts feed cylinder, be equipped with the gauze mask trompil on the gauze mask supporter between filter cylinder and the receipts feed cylinder, be equipped with the filter material book that is formed by the filter cloth coiling in the filter cylinder, be equipped with pay-off bar hole on the filter cylinder, be equipped with in the receipts feed cylinder and receive the material main shaft, filter cloth passes pay-off bar hole and covers the gauze mask trompil, and the outer tip of filter cloth is convoluteed on receiving the material main shaft, receive the.

Preferably, a supporting net is arranged in the opening of the mask.

Preferably, the opening of the mask is covered with a breathable mask.

Preferably, the material receiving barrel is provided with material receiving strip-shaped holes.

Preferably, a longitudinal pressing strip is arranged near the feeding strip-shaped hole or the receiving strip-shaped hole.

Preferably, a transverse batten is arranged between the breathable mask and the opening edge of the mask.

Preferably, a flat top surface or an arc top surface is arranged on the mask supporting body between the filter material cylinder and the material collecting cylinder, and mask openings are formed in the flat top surface or the arc top surface.

Preferably, one end of the material receiving main shaft is connected with a rotary driving part, and the rotary driving part is one of a knob or a motor.

Preferably, one end face of the material receiving barrel is provided with a disinfectant injection port.

Preferably, the inner side of the air-permeable mask is covered with an SMS non-woven fabric or an SMMS non-woven fabric, and the filter cloth is a single-layer melt-blown mask filter material.

Preferably, a driving shaft penetrates through the axis of any end face of the material receiving barrel, the outer end part of the driving shaft is connected with a knob or a rotating shaft of a motor, a rectangular groove is formed in the inner end part of the driving shaft, which is located in the material receiving barrel, the end part of the material receiving spindle is of a square head structure matched with the rectangular groove, and the square head structure is embedded into the rectangular groove.

Preferably, any end part of the material receiving main shaft is further provided with a ratchet mechanism, the ratchet mechanism comprises a ratchet wheel, a non-return pawl is arranged at the edge of the ratchet wheel, one end of the non-return pawl is arranged on the material receiving barrel or the mask supporting body, and the other end of the non-return pawl is abutted to the ratchet wheel.

Preferably, the outer side edge of the filter cloth is uniformly provided with marks or small holes at equal intervals. The distance between any two marks or small holes is larger than the length of the opening of the mask.

The mask disclosed by the invention is matched with an independent filter material roll for use, and completely meets or exceeds the domestic standards such as GB2626-2006, GBT32610-2016, GB19083-2010 and YY0469-2004, and the standards established abroad such as European Union EN149 standard, NIOSH certification and ASTM. Meanwhile, the special structure is adopted, and the device has the characteristics of convenience, safety, high efficiency, economy, environmental protection, comfort, accuracy and the like. The filter material cylinder and the material receiving cylinder can be automatically disassembled and assembled, and a sealing space for filter cloth feeding and material storing is provided, so that the filter material cylinder and the material receiving cylinder are clean and sanitary. The filter material roll placed in the filter material cylinder can provide the filter material for the mask, the filter material roll can provide the consumption for more than one hundred times, and the used filter cloth is collected, stored and even disinfected by the collecting cylinder, so that the problem of secondary pollution of the waste mask is solved. When the mask is used, the material receiving main shaft is rotated to timely update the filter cloth covering the opening of the mask, so that the filter surface of the mask is kept clean. Meanwhile, the filter cloth does not contact with the human body, so that the operation safety is greatly improved. The opening area of the opening of the mask can be freely set, so that the effective ventilation area is improved, and the breathing comfort level of people is improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure shown in FIG. 1;

FIG. 3 is an enlarged view of the structure at A shown in FIG. 2;

FIG. 4 is an enlarged view of the structure shown at B in FIG. 2;

FIG. 5 is a side view of the structure shown in FIG. 2;

FIG. 6 is another schematic structural view of the present invention;

FIG. 7 is another schematic structural view of the present invention;

fig. 8 is an enlarged structural view of C of fig. 7.

In the figure, 1 sealing sleeve, 2 mask supporting body, 21 mask opening, 210 supporting net, 3 filtering material barrel, 30 feeding strip-shaped hole, 31 filtering material roll, 32 filtering material roll main shaft, 33 transverse pressing strip, 35 longitudinal pressing strip, 310 filtering cloth, 311 mark or small hole, 5 receiving material barrel, 50 receiving strip-shaped hole, 51 receiving material roll, 52 receiving material main shaft, 55 disinfectant injection port, 6 ear belt, 7 face cover, 8 rotary driving part, 9 ratchet mechanism, 91 ratchet, 92 non-return pawl and 920 pawl seat.

Detailed Description

The technical solutions of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the detailed description of the invention without inventive step, are within the scope of the invention.

As shown in fig. 1-8, the reusable protective mask mainly comprises a mask support body 2, a sealing sleeve 1, a filter material cylinder 3, an ear belt 6, a material collecting cylinder 5, filter cloth and the like.

The filter material cylinder 3 is arranged on one side of the mask supporting body 2, the receiving cylinder 5 is arranged on the other side of the mask supporting body 2, and the filter material cylinder 3 and the receiving cylinder 5 provide a feeding and storing sealing space for the mask. The filter cloth can freely select a single-layer or multi-layer overlapping structure according to the application environment. The filter cloth is made of superfine fiber melt-blown mask filter material, such as melt-blown non-woven fabric, HEPA filter membrane, etc.

The two sides of the mask supporting body 2 are preferably designed into grooves matched with the shapes of the filter material cylinder 3 and the material collecting cylinder 5, the existing common buckle type matching connection structure can be adopted, and the connection can also be realized through screws, so that the mask can be freely disassembled and assembled, and the service life of the mask is prolonged.

As shown in fig. 5, the mask support body 2 is in a bowl-shaped or cup-shaped design, and may be made of bacteriostatic plastics. The mask mouth is connected with a sealing sleeve 1, the sealing sleeve 1 is made of elastic materials such as silica gel materials, latex, polyurethane or plastic elastomers, and the like, which are profiled with the cheek of a human body, and the sealing sleeve can be a universal structure of the existing high-grade protective mask.

As shown in fig. 2, a mask opening 21 is provided on the mask support 2 between the filter cartridge 3 and the material receiving cartridge 5. Preferably, a flat top surface is arranged on the mask supporting body 2 between the filter material cylinder 3 and the material receiving cylinder 5, and a mask opening 21 is arranged on the flat top surface. Of course, the mask support body 2 between the filter material cylinder 3 and the material receiving cylinder 5 can also be provided with an arc top surface or a top surface with other shapes, and the mask opening 21 arranged on the arc top surface can also realize the invention. The opening area of the opening of the mask can be freely set, and the opening area is adjusted to be smooth for people to breathe.

In order to support the filter cloth, a support net 210 is preferably provided in the mask opening 21. The support net 210 is made of bacteriostatic plastic.

In order to prevent the filter cloth from being scratched by the mask in the using process, the breathable mask 7 is arranged on the mask with the opening 21 of the mask in a buckling or screw connection mode, and the breathable mask 7 is provided with the vent holes 70. The existing materials of the air-permeable mask 7 can be selected, and a plurality of plastic materials can be repeatedly cleaned at present and can resist 100 ℃ high temperature and the disinfection operation of alcohol and chlorine-containing water.

The filter material roll 31 formed by winding the filter cloth 310 is arranged in the filter material cylinder 3, but as shown in fig. 7, the filter cloth 310 may be wound on the filter material spindle 32 to form the filter material roll 31 with a spindle, and the filter material roll spindle 32 may be rotatably arranged in the filter material cylinder 3.

The filter material barrel 3 is provided with a feeding strip-shaped hole 30, and a longitudinal pressing strip 35 is arranged near the feeding strip-shaped hole 30 so as to flatten and compress the filter cloth.

The material receiving barrel 5 is provided with a material receiving strip-shaped hole 50, and a longitudinal pressing strip 35 is arranged near the outlet of the material receiving strip-shaped hole so as to flatten and press the filter cloth, and prevent pollutants in the material receiving barrel 5 from overflowing. And one end surface of the material collecting barrel 5 is provided with a disinfectant injection port 55. When necessary, alcohol can be injected to sterilize the used filter cloth in time.

The receiving barrel 5 is internally provided with a receiving main shaft 52, the receiving main shaft 52 penetrates through one end face of the receiving barrel 5, the filter cloth 310 penetrates through the strip-shaped hole 30 and covers the opening 21 of the mask, and the outer end part of the filter cloth 310 is wound on the receiving main shaft 52. One end of the material collecting main shaft 52 is connected with a rotary driving component 8 such as a knob, so that the material collecting main shaft 52 can be rotated by external force to update the filter membrane in time.

A preferred embodiment is: the breathable face mask 7 adopts a vent hole structure, and water-repellent, alcohol-resistant and antistatic non-woven fabrics (functional composite non-woven fabrics such as SMS or SMMS non-woven fabrics) can be covered on the inner side of the breathable face mask 7, the non-woven fabrics can filter large particles in air and avoid the pollution of body fluid of a patient, and the breathable face mask 7 is resistant to cleaning and disinfection and can be taken down for disinfection together.

The filter cloth on the filter roll 31 adopts a single-layer melt-blown mask filter material with the grade above BFE 95. The sample mask can reach the standard above N95, and the volume of the filter roll 31 can be increased, so that the filter cloth supply amount is high. The single-layer melt-blown mask filter material can also reduce the volume of the filter material roll 31, and further reduce the volumes of the filter material cylinder 3 and the material receiving cylinder 5.

A preferred embodiment is: the whole of the ventilation mask 7 is made of a ventilation filter screen-shaped material. The filter cloth can adopt a two-layer structure, namely an overlapping structure of the water-repellent non-woven cloth and the melt-blown mask filter material, and the water-repellent non-woven cloth can prevent the body fluid of the patient from being polluted. The melt-blown mask filter material can be selected from melt-blown mask filter materials of the grades of BFE95, BFE99, PFE99, N95, N99, FFP1, FFP2 and the like, wherein the filter material subjected to electrostatic treatment has a better effect.

As shown in fig. 2, a preferred embodiment is: and a transverse batten 33 is additionally arranged between the breathable mask 7 and the edges of two opposite transverse sides of the opening 21 of the mask. So as to flatten and compact the filter cloth.

A preferred embodiment is: the rotary driving part 8 is an electric motor, a stepping motor is preferably adopted by the electric motor, the stepping motor is electrically connected with the existing microchip, the micro battery provides electric power, and the automatic winding of the filter cloth can be realized.

As shown in fig. 7 and 8, a preferred embodiment is: a driving shaft 520 penetrates through the axis of any end face of the material receiving barrel 5, the outer end part of the driving shaft 520 is connected with a knob or a motor rotating shaft 8, and a rectangular groove 521 is arranged at the inner end part of the driving shaft 520 in the material receiving barrel 5. The end of the receiving spindle 52 is a square head structure that fits into the rectangular slot 521, so that the square head structure can be inserted into the rectangular slot, and the receiving spindle 52 is connected to the driving shaft 520 in an inserting manner, so as to fix and drive the receiving spindle 52 to rotate.

Any end part of the material receiving main shaft 52 is provided with a ratchet mechanism 9, so that the material receiving main shaft 52 can rotate in one direction, and misoperation can be prevented. The ratchet mechanism 9 comprises a ratchet wheel 91, a check pawl 92 is arranged at the rim of the ratchet wheel 91, one end of the check pawl 92 is arranged on the material collecting barrel 5 or fixed on the mask supporting body 2 through a pawl seat 920, and the other end of the check pawl 92 is abutted against the ratchet wheel 91. The ratchet wheel has at least one rigid tooth form on the outer rim of the wheel and cooperates with the non-return pawl 92 to allow unidirectional rotation of the ratchet wheel.

As shown in fig. 7, the outer side edge of the filter cloth is provided with marks or small holes 311 at equal intervals. The distance between any two of the indicia or apertures 311 is greater than the length of the mask opening. The markings or apertures 311 provide an accurate indication of the position of the filter cloth preventing the filter cloth from being wasted or reused.

As shown in fig. 3 or 8, a preferred embodiment is: any end part of the material receiving main shaft 52 is provided with a ratchet mechanism 9, so that the material receiving main shaft 52 can rotate in one direction, and misoperation can be prevented. The ratchet mechanism 9 comprises a ratchet wheel 91, a check pawl 92 is arranged at the rim of the ratchet wheel 91, one end of the check pawl 92 is arranged on the material collecting barrel 5 or fixed on the mask supporting body 2 through a pawl seat 920, and the other end of the check pawl 92 is abutted against the ratchet wheel 91. The ratchet wheel has at least one rigid tooth form on the outer rim of the wheel and cooperates with the non-return pawl 92 to allow unidirectional rotation of the ratchet wheel.

The working process is as follows: the invention is worn on the head through the ear belt 6, and the sealing sleeve 1 is made of silica gel material and can be well sealed with the cheek of the human body. The mask supporting body 2 keeps the mask opening 21 at a certain height away from the cheek of a human body, when the mask supporting body is continuously used for 3-4 hours, the material receiving main shaft 52 is rotated, the used area in the filter cloth is received in the material receiving barrel, and meanwhile, the new area in the filter cloth covers the mask opening 21 again under the driving of the material receiving main shaft 52. In the process of updating the filter cloth, the safety surface on the inner side of the filter cloth does not contact with cheeks, and the polluted surface on the outer side of the filter cloth enters the material collecting barrel to be immediately collected or disinfected, so that the safety and the convenience of operation are greatly improved. And the problem of secondary pollution of the waste mask is avoided. Because the filter cloth is very thin, generally about 0.1 mm, even 100 layers are only about 1 cm, the filter cloth can provide about 100 times and about 200 times for the invention according to the application environment requirements.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative implementations, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A reusable protective mask comprises a mask support body, a sealing sleeve and filter cloth, wherein the sealing sleeve is connected to the mask support body close to the mask opening of the cheek, it is characterized in that one side of the mask supporting body is provided with a filter material cylinder, the other side of the mask supporting body is provided with a material collecting cylinder, the mask supporting body between the filter material cylinder and the material receiving cylinder is provided with a mask opening, the filter material cylinder is internally provided with a filter material roll formed by winding filter cloth, the filter material cylinder is provided with a feeding strip-shaped hole, the material receiving cylinder is internally provided with a material receiving main shaft, the filter cloth passes through the feeding strip-shaped hole and covers the opening of the mask, the outer end part of the filter cloth is wound on the material receiving main shaft, the receiving main shaft penetrates through any end face of the receiving barrel or is connected with a driving shaft penetrating through any end face of the receiving barrel, a supporting net is arranged in the opening of the mask, and the opening of the mask is covered with a breathable mask.

2. The reusable protective mask as claimed in claim 1, wherein the material receiving cylinder is provided with a material receiving strip hole, and a longitudinal strip is provided near the material receiving strip hole or the material feeding strip hole.

3. The reusable protective mask according to claim 1, wherein the inside of the air-permeable mask is covered with SMS nonwoven fabric or SMMS nonwoven fabric, and the filter cloth is a single layer melt-blown mask filter.

4. The reusable protective mask of claim 1 wherein a transverse bead is provided between said breathable mask and the edge of the opening in the mask.

5. The reusable protective mask according to claim 1, wherein the mask support body between the filter cartridge and the material receiving cartridge has a flat top surface or an arc top surface, and the flat top surface or the arc top surface has a mask opening.

6. The reusable protective mask according to claim 1, wherein one end of the material receiving spindle is connected to a rotation driving member, and the rotation driving member is a knob.

7. The reusable protective mask as claimed in claim 1, wherein the outside edges of the filter cloth are provided with marks or holes at equal intervals.

8. The reusable protective mask of claim 7 wherein the distance between any two of said indicia or apertures is greater than the length of the opening of the mask.

9. The reusable protective mask according to claim 1, wherein a driving shaft is inserted through the axis of any one end face of the material receiving cylinder, the outer end of the driving shaft is connected to a knob or a rotating shaft of a motor, a rectangular groove is formed in the inner end of the driving shaft located in the material receiving cylinder, the end of the material receiving spindle is a square head structure matched with the rectangular groove, and the square head structure is embedded in the rectangular groove.