CN111632292B

CN111632292B - Medical mask

Info

Publication number: CN111632292B
Application number: CN202010616887.2A
Authority: CN
Inventors: 张正男; 韩涵; 段书霞; 佘开江; 张丹丹; 付迎坤; 韩修恒; 韩伟鹤; 潘洪福; 林建香; 段晓堂; 赵欣; 王蓉; 徐玉茵; 范頔; 闫钧; 高文静; 陈玮雯; 柳小军; 田林奇
Original assignee: Henan Yadu Industrial Co Ltd
Current assignee: Henan Yadu Industrial Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-20
Anticipated expiration: 2040-06-30
Also published as: CN111632292A

Abstract

The invention relates to a medical mask, which skillfully utilizes a partition plate to divide a mask body into a front cavity and a rear cavity, a rectangular cylinder is communicated in the front cavity, air exhaled by a user is gathered in the rear cavity and then flows to a vertical air duct through a transition slide way by a second air one-way valve, a pushing blade below a turbine is pushed, the rotation of the turbine enables the air flow to enter a circular pipeline, then the air flow flows out through an annular notch and then forms negative pressure in the cylinder, external air is forced to enter the front cavity under the action of air pressure to be gathered, so that the user can smoothly take enough filtered air from the front cavity when inhaling, the occurrence of dyspnea when the user breathes urgently is avoided, meanwhile, the detachable filter screen is replaced by utilizing the matching of a clamping groove on a rotary plugging plate and a clamping pin, and the mask is convenient and practical, the invention has the advantages of ingenious structure, convenient and simple use, wide application range and strong practicability, and is suitable for popularization and use.

Description

Medical mask

Technical Field

The invention belongs to the technical field of medical supplies, and particularly relates to a medical mask.

Background

In order to prevent various infectious diseases and respiratory diseases, people have a growing awareness of wearing masks in life and work, and particularly, medical masks are worn to improve the protection level.

Most of the existing masks are single in structure, the whole mask is covered at the mouth and nose of a user, certain influence is caused on the breathing of the user, especially when the user carries out violent physical exercises or in a sudden breathing state, the breathing difficulty and other conditions of the user are often caused by the mask to the mouth and nose, so certain potential safety hazards are caused, most masks have the problem of poor air permeability when breathing, the user is difficult to breathe when breathing, meanwhile, for some filter element replacement masks, the operation of replacing a filter screen is very troublesome, the replacement of the filter screen is difficult, great inconvenience is caused to the user, meanwhile, when the mask is hung on the head of the user, the adaptive binding is carried out on different users, the adjustment of the hanging length is realized, and if the binding is too tight or too loose for different users, the use experience of users is affected, so a medical mask is urgently needed to solve the problems.

Disclosure of Invention

In view of the above problems, the present invention provides a medical mask that solves the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme that the medical mask comprises a transparent mask body and is characterized in that the front end of the mask body is communicated with a cylinder, a vertical partition plate is connected in the mask body to divide the interior of the mask body into a front cavity and a rear cavity, the front cavity is communicated with the cylinder, the rear end of the partition plate is connected with a transversely arranged baffle plate to divide the rear cavity into an upper layer and a lower layer, and the partition plate is connected with a plurality of groups of first gas one-way valves for enabling gas to flow from the front cavity to the rear cavity;

the lower ends of the front side cavity and the cylinder are communicated with a rectangular cylinder, a vertical air channel is connected in the rectangular cylinder, the upper end of the vertical air channel is communicated with a hollow circular pipeline, the circular pipeline and the cylinder are coaxially arranged, an annular notch is formed in the circular pipeline, a turbine arranged below the circular pipeline is rotationally connected in the vertical air channel, a plurality of groups of pushing blades arranged along the radial direction are uniformly distributed and connected at the lower end of a rotating shaft of the turbine in the circumferential direction, air outlet holes are formed in the peripheral side wall of the vertical air channel, a plurality of groups of transition passages extending out of the cover body are connected at the lower end of the partition plate, one end of each transition passage extending into the cover body is connected with a second gas one-way valve which enables gas to flow into the transition passage from the cover body and is arranged in a horn shape at the end of the transition passage, and the other end of the transition passage penetrates through the rectangular cylinder to extend, the multiple groups of transition channels are arranged towards the pushing blades in the vertical air duct;

the front end of the cylinder is connected with a detachable filter screen replacing structure, so that the filter screen at the front end of the cylinder can be replaced; the detachable screen structure that trades is connected to a rectangle section of thick bamboo lower extreme, satisfy and change the filter screen of the lower extreme of a rectangle section of thick bamboo.

Preferably, the filter screen replacing structure comprises an annular plugging plate, the plugging plate is provided with an annular groove matched with the cylinder, the plugging plate can be sleeved on the cylinder through the annular groove, an annular transition plate is axially and slidably matched in the annular groove, a spring sleeved in the annular groove is connected between the bottom of the annular groove and the transition plate, a plurality of groups of bayonet locks arranged along the radial direction are evenly distributed and connected on the outer circumference of the cylinder, a plurality of groups of U-shaped bayonet locks matched with the bayonet locks are evenly distributed and arranged on the outer side wall of the plugging plate along the circumferential direction, one end of the clamping groove is in an open notch shape, the other end of the clamping groove is closed, the matching of the clamping pin and the closed end of the clamping groove is met, so that the relative rotation between the blocking plate and the cylinder is limited, the inner side wall of the sealing ring and the inner side wall of the plugging plate are matched to clamp a filter screen arranged between the sealing ring and the plugging plate.

Preferably, the screen replacing structure comprises a rectangular frame sleeved at the lower end of a rectangular cylinder, the lower end of the rectangular frame is connected with a rectangular baffle matched with the lower end of the rectangular cylinder to clamp the filter screen tightly, the outer side wall of the rectangular cylinder is provided with a rectangular groove along the periphery, the inner side wall of the rectangular frame is connected with a rubber ring matched with the rectangular groove around, and the left side wall and the right side wall of the rectangular frame are provided with arc-shaped clamping grooves.

Preferably, the cylinder is connected with an air inlet hole size adjusting device;

the air inlet size adjusting device comprises an annular containing cavity formed in a cylinder, a rotating ring is rotatably matched in the containing cavity, a guide groove of a regular polygon is formed in the rotating ring, a plurality of groups of dividing plates are arranged in the guide groove in a sliding fit mode, a channel is formed by matching the plurality of groups of dividing plates, the number of the dividing plates is matched with the number of edges of the regular polygon, a plurality of groups of chutes matched with the number of edges of the guide groove of the regular polygon are formed in the containing cavity, guide pins are connected on the dividing plates, and the guide pins are in sliding fit in the chutes, so that the requirement that the size of the channel is changed along with the rotation of the rotating ring under the matching of the guide pins and the chutes of the plurality of groups of dividing plates is met.

Preferably, the outer edge of the rotating ring is connected with an arc-shaped driving rod extending out of the side wall of the accommodating cavity, and the outer side wall of the driving rod is connected with a plurality of groups of anti-skid ridges.

Preferably, the left side and the right side outside the cover body are respectively connected with two groups of hanging holes which are vertically arranged, a pull rope is movably connected in each hanging hole, and a rope clamping device is connected between the two groups of pull ropes on the same side;

the rope clamping device comprises two groups of clamping blocks which are matched with each other, circular holes matched with the pull rope are formed in the upper end and the lower end of each clamping block respectively, the upper end and the lower end of each clamping block are clamped in a staggered mode, the circular holes in the upper end and the lower end can be aligned, and a clamping spring is connected between the two groups of clamping blocks;

the stay cord tip connect one receive the spool, the biggest radius of receiving the spool is less than the radius of circular port.

The invention has the beneficial effects that: the invention skillfully utilizes the clapboard to divide the cover body into a front cavity and a rear cavity, a rectangular cylinder is communicated in the front cavity, the gas exhaled by a user is gathered in the rear cavity and then flows into the vertical air duct through the second gas one-way valve and the transition slideway, the pushing blade below the turbine is pushed, the rotation of the turbine enables the air flow to enter the circular ring-shaped pipeline, then the air flow flows out through the annular notch and then forms negative pressure in the cylinder, the outside air is forced to enter the front cavity to be gathered under the action of air pressure, the circular ring-shaped pipeline has the effect of wind power amplification, so that the user can smoothly absorb enough filtered air from the front cavity when inhaling, the occurrence of the situation of dyspnea when the user does strenuous exercise or breathes acutely is avoided, and the detachable filter screen replacement is realized by the matching of the clamping groove on the rotary plugging plate and the clamping pin, the breathing mask has the advantages of convenience, practicability, ingenious structure and high practicability, is convenient and simple to use, achieves the purpose of storing clean air by utilizing the breathing action of a user, greatly avoids the situation that the user difficultly breathes in due to the mask, and is suitable for popularization and use.

Drawings

Fig. 1 is a perspective view of the first stereoscopic structural diagram of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a perspective view three of the three-dimensional structure of the present invention.

Fig. 4 is a front view of the present invention.

Fig. 5 is a side view of the present invention.

Fig. 6 is a top view of the present invention.

Fig. 7 is a cross-sectional view of a side view of the present invention.

Fig. 8 is a perspective view showing an inner connection part of a rectangular tube in the present invention.

FIG. 9 is a perspective view of the rectangular tube of the present invention with a portion of the vertical duct removed from the internal connection portion.

Fig. 10 is a side sectional view of an inner connecting portion of a rectangular cylinder in the present invention.

FIG. 11 is a perspective view of the vertical duct and its upper connecting portion with a portion of the circular duct removed.

Fig. 12 is a three-dimensional matching structure diagram of the filter screen replacing structure of the present invention.

Fig. 13 is an exploded view of a screen replacement arrangement according to the present invention.

Fig. 14 is a schematic perspective matching structure diagram of a screen changing structure below a rectangular cylinder in the invention.

Fig. 15 is a perspective view of the air intake hole size adjusting device according to the present invention.

Fig. 16 is a perspective view of a rotary ring in the air intake hole size adjusting apparatus of the present invention.

Fig. 17 is a perspective view showing the fitting of the index plate in the air intake hole size adjusting apparatus of the present invention.

Fig. 18 is a perspective view of the wire clamping device of the present invention.

Reference numerals: 1. a cover body; 2. a cylinder; 3. a partition plate; 4. a front-side chamber; 5. a back side chamber; 6. a baffle plate; 7. a first gas check valve; 8. a rectangular cylinder; 9. a vertical air duct; 10. a circular pipeline; 11. a ring-shaped cut; 12. a turbine; 13. pushing the blade; 14. an air outlet; 15. a transition passage; 16. a second gas check valve; 17. a filter screen replacing structure; 18. a screen changing structure; 19. a filter screen; 20. a plugging plate; 21. an annular groove; 22. a transition plate; 23. a spring; 24. a bayonet lock; 25. a card slot; 26. a seal ring; 27. a rectangular frame; 28. a rectangular baffle plate; 29. a rectangular groove; 30. a rubber ring; 31. a clamping groove; 32. an air inlet hole size adjusting device; 33. an accommodating chamber; 34. a rotating ring; 35. a guide groove; 36. a dividing plate; 37. a channel; 38. a chute; 39. a guide pin; 40. a drive rod; 41. anti-skid ridges; 42. hanging holes; 43. pulling a rope; 44. a rope clamping device; 45. a clamping block; 46. a circular hole; 47. a chucking spring; 48. and (4) collecting the tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment one, with reference to fig. 1 to 18, a medical mask comprises a transparent mask body 1, the transparent mask body 1 can see the breathing condition inside the mask body 1 from the outside, and is characterized in that the front end of the mask body 1 is communicated with a cylinder 2, both ends of the cylinder 2 are open, a vertical partition plate 3 is connected inside the mask body 1 to divide the inside of the mask body 1 into a front chamber and a rear chamber, which are a front chamber 4 and a rear chamber 5 respectively, the front chamber 4 is communicated with the cylinder 2, the rear chamber 5 is attached to the face of a user, the rear end of the partition plate 3 is connected with a transversely arranged baffle plate 6 to divide the rear chamber 5 into an upper layer and a lower layer, the partition plate 3 is connected with a plurality of first gas check valves 7 for flowing gas from the front chamber 4 to the rear chamber 5, the first gas check valves 7 are arranged at the upper layer of the rear chamber 5, so that the gas in the front side chamber 4 can only flow into the rear side chamber 5, and the rear side chamber 5 cannot flow back into the front side chamber 4;

the front side cavity 4 and the lower end of the cylinder 2 are communicated with a rectangular cylinder 8, a vertical air duct 9 is connected in the rectangular cylinder 8, the lower end of the rectangular cylinder 8 is in an open shape, the vertical air duct 9 is installed in the rectangular cylinder 8, the upper end of the vertical air duct 9 is communicated with a hollow circular pipeline 10, the upper end of the vertical air duct 9 is gradually closed and communicated with a circular pipeline at the upper end, the circular pipeline 10 and the cylinder 2 are coaxially arranged, the outer diameter of the circular pipeline 10 is smaller than the inner diameter of the cylinder 2, an annular notch 11 is formed in the circular pipeline 10, the notch is small and annularly formed in one side of the circular pipeline 10, the notch is formed in the front side, the air outlet direction of the notch faces the inside, the cross section of the circular pipeline 10 is in a flat annular structure, a turbine 12 arranged below the circular pipeline 10 is rotatably connected in the vertical air duct 9, the turbine 12 is installed on a cross-shaped installation support in the vertical air, a plurality of groups of pushing blades 13 which are arranged along the radial direction are uniformly and circumferentially connected at the lower end of a rotating shaft of the turbine 12, the turbine 12 can rotate by the passive pushing of the pushing blades 13, so that air flow is formed, air outlet holes 14 are formed in the peripheral side wall of the vertical air duct 9, the air flow enters from the air outlet holes 14, flows into the circular ring-shaped pipeline 10 through the turbine 12 along the direction of the vertical air duct 9, then flows out from an annular notch 11 in the circular ring-shaped pipeline 10, high-speed air flow is formed at the circular ring-shaped pipeline 10, so that negative pressure is formed, so that the air flow at the front end of the cylinder 2 enters the front side cavity 4 for concentration after being pressurized through the circular ring-shaped pipeline 10, and then smoothly enters the rear side cavity 5 through the first gas one-way valve 7 for a user to use, the occurrence of the situation that air suction difficulty occurs in the cover body 1 is avoided, the three transition passages 15 are provided, one end of the transition passage 15 extending into the cover body 1 is connected with a second gas one-way valve 16 which enables gas to flow from the cover body 1 into the transition passage 15, the second gas one-way valve 16 is arranged at the end of the transition passage 15 in a trumpet shape, the gas can only flow into the transition passage 15 from the rear side chamber 5 through the second gas one-way valve 16 due to the existence of the second gas one-way valve 16, the trumpet shape of the end of the transition passage 15 is used for better collecting exhaled air in the rear side chamber 5, the trumpet shape end of the transition passage 15 is just arranged at the position close to the mouth under the nose of a user, the exhaled gas of the user can be better concentrated at the transition passage 15 and then enters the transition passage 15, the other end of the transition passage 15 extends into the vertical air duct 9 through the rectangular tube 8 and is arranged at the end in a convergent manner, the purpose of the closing-in type setting is to concentrate the gas entering the transition channels 15, the multiple groups of transition channels 15 are arranged towards the pushing blades 13 in the vertical air duct 9, the concentrated gas flow can better push the pushing blades 13 to rotate, so that the turbines 12 on the transition channels are driven to rotate, and the redundant gas can flow out through the opposite air outlets;

the front end of the cylinder 2 is connected with a detachable filter screen replacing structure 17, so that the filter screen 19 at the front end of the cylinder 2 can be replaced, the filter screen replacing structure 17 is arranged at the front end of the cylinder 2, a user can replace the filter screen conveniently, recycling is realized, and only the filter screen needs to be replaced when the filter screen is used next time; the lower end of the rectangular cylinder 8 is connected with a detachable screen changing structure 18, so that the requirement of changing a filter screen 19 at the lower end of the rectangular cylinder 8 is met, and the purpose is to realize the circular use, because the air sucked from the lower end of the rectangular cylinder 8 is sucked into a human body, the air entering the front side cavity 4 from the lower end of the rectangular cylinder 8 needs to be filtered, but in order to be convenient to use and realize the circular use, the detachable screen changing structure 18 can be adopted, so in the using process, only the filter screen 19 needs to be changed, in the using process, after the filter screen 19 is changed at the end part of the cylinder 2 and the end part of the rectangular cylinder 8, the cover body 1 is covered at the mouth and nose of a user, the air exhaled by the user enters the transition channel 15 from the rear side cavity 5 through the second air one-way valve 16, then the air is blown onto the push blade 13 after the closing up and the flow rate is increased through the transition channel, the driven pushing of the pushing blade 13 enables the turbine 12 to rotate, redundant exhaled gas flows out from the air outlet 14 at the opposite side, the rotation of the turbine 12 enables the gas to flow upwards after being filtered from the lower end of the rectangular cylinder 8 and then flows into the circular ring-shaped pipeline 10 at the upper part after passing through the air duct, the gas flows out from the annular notch 11, a negative pressure area is formed in the cylinder 2, after the negative pressure area is formed, the gas at the end part of the cylinder 2 is filtered and then is forcedly concentrated in the front side cavity 4 through the negative pressure area formed by the circular ring-shaped pipeline 10 in the cylinder 2, after being concentrated in the front side cavity 4, the clean air is switched into inhalation along with the exhalation of a user, at the moment, the clean air collected in the front side cavity 4 enters the rear side cavity 5 along with the first gas one-way valve 7 to be used by the user, the problems of breathing obstacle and the like caused by the inhalation difficulty can not occur, the air can be recycled, when the user exha, during inhaling the clean air with gathering in front side cavity 4 inhales rear side cavity 5, the person of facilitating the use breathes in, utilizes user's self breathing action as the power of extraction clean air, and the structure is ingenious, convenient to use, and the practicality is strong.

In the second embodiment, on the basis of the first embodiment, with reference to fig. 1 to 18, the filter screen replacing structure 17 includes an annular blocking plate 20, the middle of the blocking plate 20 is open to form an annular structure, the blocking plate 20 is provided with an annular groove 21 matching with the cylinder 2, so that the blocking plate 20 can be sleeved on the cylinder 2 through the annular groove 21, the end of the cylinder 2 is inserted into the annular groove 21 to achieve the sleeving effect between the blocking plate 20 and the cylinder 2, the annular groove 21 is axially and slidably matched with an annular transition plate 22, the size of the transition plate 22 is just matched with the size of the annular groove 21, a spring 23 sleeved in the annular groove 21 is connected between the bottom of the annular groove 21 and the transition plate 22, the cylinder 2 is axially and uniformly connected with a plurality of sets of radially arranged bayonet pins 24, the bayonet pins 24 are generally arranged in four sets, and a plurality of U-shaped bayonet grooves 25 matching with the bayonet pins 24 are uniformly arranged on the outer side wall of the blocking plate 20 along the circumferential direction One end of the clamping groove 25 is in an open notch shape, the other end of the clamping groove 25 is closed, the matching between the clamping pin 24 and the closed end of the clamping groove 25 is met, so that the relative rotation between the blocking plate 20 and the cylinder 2 is limited, the notch groove of the clamping groove 25 is arranged on one side, facing the cylinder 2, of the blocking plate 20, the inner wall of the cylinder 2 is connected with an annular sealing ring 26 with an L-shaped cross section, the sealing ring 26 is matched with the inner side wall of the blocking plate 20 to clamp the filter screen 19 arranged between the sealing ring 26 and the blocking plate 20, the filter screen 19 at the end part of the cylinder 2 is required to be replaced, a new filter screen 19 is arranged at the position of the sealing ring 26 in the cylinder 2, then the blocking plate 20 is sleeved at the end part of the cylinder 2, then the blocking plate 20 is pushed to move towards the direction of the cylinder 2, after the clamping pin 24 is contacted with the clamping groove 25, the end part of the, press filter screen 19 in to sealing ring 26, along with the removal of closure plate 20, treat that bayonet lock 24 removes behind axial extreme position, spring 23 is in compression state, rotation closure plate 20 this moment, make bayonet lock 24 block the blind end at draw-in groove 25 under the effect of spring 23 elasticity smoothly, closure plate 20 is restricted for the rotation of drum 2 this moment, filter screen 19 is smooth to be pressed between sealing ring 26 and closure plate 20 simultaneously, when this filter screen 19 need be changed, press closure plate 20 hard, then reverse rotation closure plate 20, make bayonet lock 24 can break away from in the draw-in groove 25 smoothly, take off closure plate 20 this moment, it can to change filter screen 19, and is convenient good-to-use.

In the third embodiment, on the basis of the first embodiment, with reference to fig. 1 to 18, the screen replacing structure 18 includes a rectangular frame 27 sleeved on the lower end of the rectangular cylinder 8, the rectangular frame 27 is just large enough to be sleeved on the lower end of the rectangular cylinder 8, the lower end of the rectangular frame 27 is connected to a rectangular baffle 28 which is matched with the lower end of the rectangular cylinder 8 to clamp the filter screen 19, the rectangular baffle 28 is smaller than the rectangular frame 27, rectangular grooves 29 are formed on the outer side wall of the rectangular cylinder 8 along the periphery, rubber rings 30 matched with the rectangular grooves 29 are connected on the periphery of the inner side wall of the rectangular frame 27, arc-shaped clamping grooves 31 are formed on the left side wall and the right side wall outside the rectangular frame 27, the clamping grooves 31 are convenient for a user to remove the rectangular frame 27 from the rectangular lower end by overcoming the friction force of the rubber rings 30 through the clamping grooves 31, when replacing the filter screen 19 at the lower end of the rectangular frame 27, the rectangular frame 27 is taken down from the lower end of the rectangular cylinder 8, the filter screen 19 which needs to be replaced is taken down, a new filter screen 19 is replaced, the filter screen 19 is placed at the position of the rectangular baffle 28 in the rectangular frame 27, then the rectangular frame 27 is covered at the lower end of the rectangular cylinder 8, the rubber ring 30 is aligned with the rectangular groove 29 after the friction force of the rubber ring 30 is overcome, and at the moment, the rectangular frame 27 cannot be easily separated from the lower end of the rectangular cylinder 8.

In the fourth embodiment, on the basis of the first or second or third embodiment, with reference to fig. 1 to 18, an air inlet size adjusting device 32 is connected to the cylinder 2 for adjusting the size of the air inlet at the cylinder 2;

the air inlet size adjusting device 32 comprises an annular accommodating cavity 33 arranged on the cylinder 2, the accommodating cavity 33 is an annular structure which is arranged on the structure of the cylinder 2 and has a radius larger than the outer diameter of the cylinder 2, the inner part of the annular structure is communicated with the cylinder 2, a rotating ring 34 is in rotary fit in the accommodating cavity 33, the outer diameter of the rotating ring 34 is matched with the inner diameter of the accommodating cavity 33, the rotating ring 34 is of an annular structure with a hollow middle part, the two axial sides of the rotating ring 34 are respectively and axially positioned by a bracket in the accommodating cavity 33, so that the rotating ring 34 can only rotate along the direction of the cylinder 2 in the accommodating cavity 33, the rotating ring 34 is provided with a regular polygonal guide groove 35, the number of the sides of the guide groove 35 can be set to be regular hexagons or regular octagons, the regular octagons are taken as an example, the regular octagons guide groove 35 is arranged on the rotating ring 34, and a plurality of, the index plates 36 are eight groups, each group of index plates 36 are respectively matched in each group of side grooves in the guide groove 35 in a sliding manner, a channel 37 is formed by matching the groups of index plates 36, the eight groups of index plates 36 can adjust the radius of the channel 37 along with the difference of positions, the number of the index plates 36 is matched with the number of sides of a regular polygon, a plurality of groups of inclined grooves 38 matched with the number of sides of the regular polygon guide groove 35 are arranged on the accommodating cavity 33, a guide pin 39 is connected on the index plates 36, the guide pin 39 is matched in the inclined grooves 38 in a sliding manner, so that the index plates 36 can only rotate along the direction of the inclined grooves 38, the size change of the channel 37 along with the rotation of the rotating ring 34 under the matching of the guide pins 39 and the inclined grooves 38 is met, the structure is similar to a shutter structure, the process of screwing or screwing the groups of the matched index plates 36 is driven by adopting the mode of rotating the outer rotating ring 34, thereby changing the radius of the air inlet pipe of the cylinder 2 at the position of the accommodating cavity 33 and realizing the adjustment of the air inlet quantity in the cylinder 2.

In the fifth embodiment, on the basis of the fourth embodiment, with reference to fig. 1 to 18, an arc-shaped driving rod 40 extending out of the side wall of the accommodating cavity 33 is connected to the outer edge of the rotating ring 34, a plurality of sets of anti-slip ribs 41 are connected to the outer side wall of the driving rod 40, the anti-slip ribs 41 play an anti-slip role, and the rotating ring 34 is rotated by driving the arc-shaped driving rod 40, so that the adjustment of the air intake amount of the cylinder 2 is realized.

Sixth embodiment, on the basis of the first embodiment, with reference to fig. 1 to 18, two sets of hanging holes 42 which are vertically arranged are respectively connected to the left and right sides outside the cover body 1, a pulling rope 43 is movably connected in the hanging holes 42, the pulling rope 43 may be elastic or inelastic, and the elastic rope has the disadvantages that the ear is worn for a long time and is worn for a long time, the ear is painful after wearing for a long time, and a rope clamping device 44 is connected between the two sets of pulling ropes 43 on the same side because of having certain elasticity;

the rope clamping device 44 comprises two groups of clamping blocks 45 which are matched with each other, circular holes 46 which are matched with the pull rope 43 are respectively formed in the upper end and the lower end of each clamping block 45, the upper end and the lower end of each clamping block 45 are clamped in a staggered mode, the circular holes 46 in the upper end and the lower end can be aligned, and a clamping spring 47 is connected between the two groups of clamping blocks 45;

the end of the pull rope 43 is connected with a wire collecting tube 48, the maximum radius of the wire collecting tube 48 is smaller than the radius of the circular hole 46, the clamping blocks 45 can be clamped together as shown in the attached drawings, when the clamping springs 47 are in a natural state, the circular holes 46 at the upper end and the lower end of the clamping blocks 45 are in non-aligned positions, but not complete non-aligned conditions, a certain hole-shaped structure is reserved for passing, when the two clamping blocks 45 are pinched, the clamping springs 47 are compressed, so that the two groups of clamping blocks 45 are clamped together, the two groups of circular holes 46 are aligned, the pull rope 43 can smoothly pass through the circular holes 46 at the moment, the length of the hanging lug is conveniently adjusted, as the pull rope 43 is made of soft nylon or cotton ropes, the wire collecting tube 48 is arranged at the end of the pull rope 43, the maximum radius of the wire collecting tube 48 is smaller than the radius of the circular holes 46, and the structure of the wire, the pull rope 43 can conveniently penetrate through the circular hole 46, when the mask is used, the two groups of fixture blocks 45 are pinched to align the circular holes 46 at the upper end and the lower end of the fixture blocks 45, so that the pull rope 43 smoothly penetrates through the circular holes, then in order to ensure that the rope clamping device 44 can reliably be arranged on the pull rope 43, the pull rope 43 at the same side can be pulled and knotted, and therefore the pull rope 43 is hung on the ear body after being not directly knotted, because the length requirements of the pull rope 43 by people are different, when the pull rope is hung on the ear body after being pulled and knotted, sometimes the pull rope is too tight or too loose, a plurality of protection effects cannot be achieved, therefore, the two groups of fixture blocks 45 can be pinched, then the two groups of pull ropes 43 are pulled, the purpose of adjusting the length of the hanging ears is achieved, the adjustment is very convenient, the rope clamping device 44 can be recycled, when the mask needs to be replaced, only the new mask needs to, the adjustment is convenient, the rope clamping device 44 can be recycled, and the adjustment is convenient and simple.

When the invention is used, firstly, the filter screen 19 at the lower end of the cylinder 2 and the lower end of the rectangular cylinder 8 needs to be replaced, when the filter screen 19 at the position of the cylinder 2 needs to be replaced, the plugging plate 20 is pressed by force, then the plugging plate 20 is rotated reversely, the bayonet lock 24 can be smoothly separated from the bayonet lock 25, at the moment, the plugging plate 20 is taken down, a new filter screen 19 is placed at the position of the sealing ring 26 in the cylinder 2, then the plugging plate 20 is sleeved at the end part of the cylinder 2, then the plugging plate 20 is pushed to move towards the direction of the cylinder 2, after the bayonet lock 24 is contacted with the bayonet lock 25, the end part of the cylinder 2 is contacted with the transition plate 22, meanwhile, the inside of the plugging plate 20 is contacted with the L-shaped sealing ring 26, the filter screen 19 is pressed towards the sealing ring 26, along with the movement of the plugging plate 20, after the bayonet lock 24 moves to the axial limit position, at the moment, the blocking plate 20 is rotated, so that the bayonet 24 is smoothly clamped at the closed end of the clamping groove 25 under the action of the elastic force of the spring 23, at the moment, the blocking plate 20 is limited to rotate relative to the cylinder 2, meanwhile, the filter screen 19 is smoothly pressed between the sealing ring 26 and the blocking plate 20, when the filter screen 19 at the lower end of the rectangular cylinder 8 needs to be replaced, the clamping groove 31 is tightly pinched by hands, the rectangular frame 27 is taken down from the lower end of the rectangular cylinder 8, the filter screen 19 needing to be replaced is taken down, a new filter screen 19 is replaced, the filter screen 19 is placed at the position of the rectangular baffle 28 in the rectangular frame 27, then the rectangular frame 27 is covered at the lower end of the rectangular cylinder 8, the rubber ring 30 is aligned with the rectangular groove 29 after the friction force of the rubber ring 30 is overcome, at the moment, the rectangular frame 27 cannot be easily separated from the lower end of the rectangular cylinder 8, and;

the pulling rope 43 of the mask is tied up in the hanging hole 42, then two groups of clamping blocks 45 are pinched to align the circular holes 46 at the upper end and the lower end of the clamping blocks 45, so that the pulling rope 43 smoothly passes through the circular holes, then in order to ensure that the rope clamping device 44 can be reliably positioned on the pulling rope 43, the mask can be covered at the mouth and the nose of a user after being pulled and knotted on the pulling rope 43 at the same side, the user can pinch two groups of clamping blocks 45 and then pull two groups of pulling ropes 43 to achieve the purpose of adjusting the length of a hanging lug, after the mask is taken, the adjustment of the air inflow size in the structure of the cylinder 2 can be realized by driving the arc-shaped driving rod 40, the arc-shaped driving rod 40 drives the rotating ring 34 to rotate, the rotating ring 34 rotates to enable the dividing plate 36 to realize the conversion adjustment of the position, so as to adjust the size of the air inlet channel 37 in the cylinder 2 and control the size of the air inflow, then the gas is closed up through a transition channel 15 to improve the flow speed and then blown onto a pushing blade 13, the driven pushing of the pushing blade 13 enables a turbine 12 to rotate, redundant exhaled gas flows out from an air outlet 14 at the opposite side, the rotation of the turbine 12 enables the gas to flow upwards after being filtered from the lower end of a rectangular cylinder 8 and then flows into an annular pipeline 10 at the upper part after passing through an air duct, the gas flows out from an annular notch 11, a negative pressure area is formed in the cylinder 2, after the negative pressure area is formed, the gas at the end part of the cylinder 2 is forced to be concentrated in a front side chamber 4 through the negative pressure area formed by the annular pipeline 10 in the cylinder 2 after being filtered, clean air is concentrated in the front side chamber 4 and is switched into inhalation along with exhalation of a user, at the moment, the clean air collected in the front side chamber 4 enters a rear side chamber 5 along with a first gas one-way valve 7 to be used by the user, the problems of breathing obstacle and the like caused by inhalation, recycle, make clean gas gather in front side cavity 4 when the user exhales, with gathering the clean air in front side cavity 4 when breathing in and inhale rear side cavity 5, the person of facilitating the use inhales the use, utilizes user's self breathing power as the power of extraction clean air, and the structure is ingenious, and convenient to use, the practicality is strong, disinfects after finishing using, resumes to initial condition, waits for next use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A medical mask comprises a transparent mask body (1) and is characterized in that the front end of the mask body (1) is communicated with a cylinder (2), the mask body (1) is internally connected with a vertical partition plate (3) to divide the interior of the mask body (1) into a front cavity and a rear cavity, the front cavity (4) and the rear cavity (5) are respectively a front cavity (4) and a rear cavity (5), the front cavity (4) is communicated with the cylinder (2), the rear end of the partition plate (3) is connected with a transversely arranged baffle plate (6) to divide the rear cavity (5) into an upper layer and a lower layer, and the partition plate (3) is connected with a plurality of groups of first gas one-way valves (7) for enabling gas to flow from the front cavity (4) to the rear cavity (5);

the lower extreme intercommunication a rectangle section of thick bamboo (8) of front side cavity (4) and drum (2), a vertical wind channel (9) of rectangle section of thick bamboo (8) internal connection, vertical wind channel (9) upper end intercommunication a hollow ring form pipeline (10) in inside, ring form pipeline (10) and drum (2) coaxial setting, ring form pipeline (10) are seted up in and are had annular incision (11), vertical wind channel (9) internal rotation connect one arrange turbine (12) of ring form pipeline (10) below in, the pivot lower extreme circumference equipartition of turbine (12) be connected with the promotion blade (13) of multiunit along radial setting, the lateral wall all around of vertical wind channel (9) on open and have exhaust vent (14), baffle (3) lower extreme be connected with multiunit transition passageway (15) that extend cover body (1), transition passageway (15) extend to cover body (1) in one end connect one with gas from cover body (1) internal flow to transition logical A second gas one-way valve (16) in the channel (15) is arranged at the end part of the transition channel (15) in a horn shape, the other end of the transition channel (15) penetrates through the rectangular cylinder (8) to extend into the vertical channel (9) and is arranged at the end part in a closing-in type, and a plurality of groups of transition channels (15) are arranged towards pushing blades (13) in the vertical channel (9);

the front end of the cylinder (2) is connected with a detachable filter screen replacing structure (17) to replace a filter screen (19) at the front end of the cylinder (2); the lower end of the rectangular cylinder (8) is connected with a detachable screen changing structure (18), so that a filter screen (19) at the lower end of the rectangular cylinder (8) can be replaced.

2. The medical mask according to claim 1, wherein the filter screen replacing structure (17) comprises an annular blocking plate (20), the blocking plate (20) is provided with an annular groove (21) matched with the cylinder (2), the blocking plate (20) can be sleeved on the cylinder (2) through the annular groove (21), the annular groove (21) is axially and slidably matched with an annular transition plate (22), a spring (23) sleeved in the annular groove (21) is connected between the bottom of the annular groove (21) and the transition plate (22), a plurality of groups of clamping pins (24) arranged along the radial direction are uniformly distributed and connected on the periphery of the cylinder (2), a plurality of groups of U-shaped clamping grooves (25) matched with the clamping pins (24) are uniformly distributed and formed on the outer side wall of the blocking plate (20) along the circumferential direction, one end of each clamping groove (25) is in an open notch shape, the other end is sealed, satisfies the cooperation of bayonet lock (24) and draw-in groove (25) blind end and makes relative rotation between shutoff board (20) and drum (2) restricted, drum (2) in-connection an annular cross-section be the sealing ring (26) of L shape, the inside wall cooperation of sealing ring (26) and shutoff board (20) satisfy filter screen (19) of placing between the two and carry out the centre gripping.

3. The medical mask according to claim 1, wherein the screen changing structure (18) comprises a rectangular frame (27) sleeved at the lower end of the rectangular cylinder (8), the lower end of the rectangular frame (27) is connected with a rectangular baffle (28) matched with the lower end of the rectangular cylinder (8) to clamp the filter screen (19), a rectangular groove (29) is formed in the outer side wall of the rectangular cylinder (8) along the periphery, a rubber ring (30) matched with the rectangular groove (29) is connected to the periphery of the inner side wall of the rectangular frame (27), and arc-shaped clamping grooves (31) are formed in the left side wall and the right side wall outside the rectangular frame (27).

4. The medical mask as claimed in claim 1, 2 or 3, wherein said cylinder (2) is connected to an air inlet size adjusting means (32);

the air inlet size adjusting device (32) comprises an annular accommodating cavity (33) arranged on the cylinder (2), a rotating ring (34) is rotationally matched in the accommodating cavity (33), the rotating ring (34) is provided with a regular polygonal guide groove (35), a plurality of groups of dividing plates (36) are matched in the guide groove (35) in a sliding way, a channel (37) is formed by the matching of the plurality of groups of dividing plates (36), the number of the dividing plates (36) is matched with the number of the sides of the regular polygon, a plurality of groups of inclined grooves (38) matched with the number of the sides of the regular polygon guide groove (35) are arranged on the accommodating cavity (33), the dividing plate (36) is connected with a guide pin (39), the guide pin (39) is in sliding fit in the inclined groove (38), and the size of the channel (37) can be changed along with the rotation of the rotating ring (34) under the fit of the guide pin (39) and the inclined groove (38) of a plurality of groups of dividing plates (36).

5. The medical mask according to claim 4, wherein the outer edge of the rotating ring (34) is connected with an arc-shaped driving rod (40) extending out of the side wall of the accommodating cavity (33), and the outer side wall of the driving rod (40) is connected with a plurality of groups of anti-skid ridges (41).

6. The medical mask according to claim 1, wherein the left and right sides of the exterior of the mask body (1) are respectively connected with two groups of hanging holes (42) which are vertically arranged, a pull rope (43) is movably connected in the hanging holes (42), and a rope clamping device (44) is connected between the two groups of pull ropes (43) on the same side;

the rope clamping device (44) comprises two groups of clamping blocks (45) which are matched with each other, the upper end and the lower end of each clamping block (45) are respectively provided with a circular hole (46) matched with the pull rope (43), the upper end and the lower end of each clamping block (45) are clamped in a staggered mode, the circular holes (46) at the upper end and the lower end can be aligned, and a clamping spring (47) is connected between the two groups of clamping blocks (45);

the end part of the pulling rope (43) is connected with a wire collecting pipe (48), and the maximum radius of the wire collecting pipe (48) is smaller than that of the circular hole (46).