CN113144365A

CN113144365A - Respirator protective mask

Info

Publication number: CN113144365A
Application number: CN202110116966.1A
Authority: CN
Inventors: 熊小川; 袁峰; 迟奇峰; 周道福; 谭景霞
Original assignee: Huizhou Meihao Chuangyi Medical Technology Co Ltd
Current assignee: Huizhou Meihao Chuangyi Medical Technology Co Ltd; Mehow Innovative Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-07-23
Anticipated expiration: 2041-01-28
Also published as: CN113144365B

Abstract

The invention belongs to the technical field of protective masks, and particularly relates to a protective mask of a breathing machine, which comprises an outer-layer mask, a plastic rod, an outer bag, a gas input adjusting mechanism, an inner-layer mask, an elastic inner bag, a one-way valve and a fixing ring, wherein if an oxygen pipe is in a straightened state in the use process, when a wearer shakes a head bag, the traditional mask can cause the oxygen pipe in a stretched state to pull and deviate the mask, and medical care personnel are required to assist to wear the mask again; when a wearer shakes the head bag, the oxygen tube is pulled to drive the oxygen tube access structure to slide and be separated from the mounting tube, and in this state, after the wearer finds that the oxygen tube access structure and the mounting tube are separated, the oxygen tube access structure and the mounting tube can be reinstalled by manually pulling the pull ring.

Description

Respirator protective mask

Technical Field

The invention belongs to the technical field of protective masks, and particularly relates to a protective mask of a breathing machine.

Background

In modern clinical medicine, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia and breathing management during major surgery, respiratory support therapy and emergency resuscitation as an effective means for manually replacing the function of spontaneous ventilation, and has a very important position in the modern medical field. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications and save and prolong the life of a patient.

The respirator can use the protective mask in the using process, but when the traditional protective mask is used, exhaled air is often condensed on the inner wall surface of the mask to form small water drops, and the small water drops slide to the lower side along with the inner wall surface of the protective mask, so that the wearer can feel inconvenient when the wearer feels warm and wet, and secondary infection is easily caused by bacteria; the wearing process of the protective mask is troublesome, medical staff need to wear the protective mask in an auxiliary mode, if the oxygen tube is in a straightened state in the using process, when a wearer shakes the head, the oxygen tube in the straightened state pulls the mask to enable the mask to deviate, the mask cannot be corrected by self, and the protective mask needs to be worn again by other people; in addition, the mask is easy to fall off when the head bag is shaken, and the patient is not easy to insert by himself to cause oxygen interruption, thus being dangerous to life.

The invention designs a respirator protective mask to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a respirator mask which is realized by adopting the following technical scheme.

A respirator protective mask comprises an outer layer mask, a plastic rod, an outer bag, a gas input adjusting mechanism, an inner layer mask, an elastic inner bag, a one-way valve and a fixing ring, wherein the fixing ring is fixedly arranged on the front side of the outer layer mask through the plastic rod; one end of the outer bag is fixedly arranged on the front side of the outer layer face mask, the other end of the outer bag is fixedly arranged on the fixing ring, and the outer bag is communicated with the inner side of the outer layer face mask; the inner face mask is arranged on the inner side of the outer face mask, an elastic inner bag communicated with the inner face mask is fixedly arranged on the front side of the inner face mask, one end of the elastic inner bag is fixedly arranged on the fixing ring, and the other end of the elastic inner bag is fixedly connected with the outer face mask through three first connecting rods which are uniformly distributed in the circumferential direction; a one-way valve for discharging air is respectively arranged at the joint of the elastic inner bag and the inner face mask and at the outlet of the elastic inner bag; the elastic inner bag is positioned at the inner side of the outer bag; the side wall of the outer layer mask is provided with a gas input adjusting mechanism.

The gas input adjusting mechanism comprises a gas inlet pipe, a mounting pipe, a first spring, an oxygen pipe access structure, a sliding adjusting structure, a valve plug and a pull rope, wherein one end of the gas inlet pipe is fixedly mounted on the outer wall surface of the outer layer mask, and the gas inlet pipe is communicated with the outer layer mask; the outer circular surface of the gas leading-in pipe is provided with a circular hole which is communicated with the inside and the outside, and the gas leading-in pipe is provided with a downward concave square groove; the mounting pipe is mounted at one end of the gas inlet pipe, which is far away from the outer-layer mask, and the inner circular surface of the gas inlet pipe, which is close to one end of the mounting pipe, is provided with an annular first inclined surface and an annular first straight surface; the outer circular surface of the gas inlet pipe is fixedly provided with a gas inlet pipe, and a one-way valve only allowing gas to enter is arranged in the gas inlet pipe and close to the inlet.

One end of the valve plug is fixedly provided with an arc-shaped baffle, the other end of the valve plug is provided with an annular second inclined surface and an annular second straight surface, the valve plug is arranged in the gas leading-in pipe in a sliding mode, the second inclined surface on the valve plug is matched with the first inclined surface in the gas leading-in pipe, and the second straight surface on the valve plug is matched with the second straight surface in the gas leading-in pipe; a first pre-pressed spring is arranged between the valve plug and the gas inlet pipe; one end of the sliding adjusting structure is a conical structure, the sliding adjusting structure is slidably mounted in the mounting pipe through the matching of the guide block and the guide groove, and two limiting rods which have a limiting effect on the relative sliding of the sliding adjusting structure and the mounting pipe are symmetrically and slidably mounted in the sliding adjusting structure; an adjusting structure is slidably mounted in the middle of the inner side of the sliding adjusting structure, a conical surface is arranged on the adjusting structure, and one end, far away from the conical surface, of the adjusting structure extends out of one end of a conical structure of the sliding adjusting structure; one side of the sliding adjusting mechanism, which is not provided with the conical surface, is fixedly provided with a spring mounting plate through three connecting plates which are uniformly distributed in the circumferential direction, and a fourth spring is arranged between the spring mounting plate and the adjusting structure; the fourth spring is a compression spring and has pre-pressure; one end of each limiting rod is matched with the adjusting structure, when the adjusting structure slides relative to the adjusting structure and slides towards one side of the gas inlet pipe, the matched end of each limiting rod and the adjusting structure is changed from a state of being matched with the round end of the adjusting structure to a state of being matched with the conical structure of the adjusting structure, and the two limiting rods relieve the limitation on the sliding adjusting structure and the mounting pipe; when oxygen is input, the valve plug slides relative to the gas inlet pipe, and after the valve plug is completely opened, the valve plug blocks the gas inlet pipe through the outer circular surface and the arc-shaped baffle; one end of the oxygen pipe access structure is of a conical structure, a pull rope is fixedly arranged at the end of the conical structure of the oxygen pipe access structure, and the other end of the pull rope penetrates through the adjusting structure, the spring mounting plate and the sliding adjusting structure and penetrates out of a round hole formed in the gas inlet pipe; an oxygen pipe connected with the breathing machine is nested on the oxygen access structure; the sliding adjusting mechanism and the oxygen pipe access structure are provided with air holes; the volume of the elastic inner bag is maximum under the elastic action of the elastic inner bag when no external force exists; the volume of the outer bag is larger than that of the elastic inner bag when the volume is maximum, and the outer bag has no elasticity.

Above-mentioned inlayer face guard can just be greater than the mouth nose region to wearer's mouth nose and inlayer face guard size after wearing, simultaneously and have the clearance between the wearer's face.

As a further improvement of the technology, two limiting clamping grooves are symmetrically formed in the inner circular surface of the mounting pipe and are matched with the two limiting rods in a one-to-one correspondence mode.

Two guide grooves are symmetrically formed in the inner circular surface of the installation pipe, two guide blocks are symmetrically installed on the outer circular surface of the sliding adjustment structure, and the sliding adjustment structure is installed in the installation pipe through the sliding fit of the two guide blocks and the two guide grooves.

As a further improvement of the technology, one end of the pull rope extending out of the gas leading-in pipe is fixedly provided with a pull ring which is manually pulled by a user; the gas leading-in pipe is internally provided with a guide wheel which plays a role in guiding the pulling rope.

As a further improvement of the technology, a plurality of tightening rings which play a tightening role on the oxygen pipes which are arranged in a nested way are uniformly arranged on the outer circular surface of one end of the oxygen pipe access structure which is not provided with a conical structure.

As a further improvement of the technology, the check valve comprises a second connecting rod, a first fixed disk, a sealing disk, a limiting sealing ring, a limiting disk and a first guide rod, wherein the first fixed disk is fixedly arranged on the inner side of the corresponding position of the air inlet pipe and the elastic air bag through three second connecting rods; seal a dish slidable mounting on first guide bar, and seal a dish and the cooperation of spacing sealing ring.

For the one-way valve arranged at the air inlet pipe, the sealing disc is positioned at one end of the limiting sealing ring, which is back to the inlet of the air inlet pipe; for the two one-way valves installed at the elastic air bag, the sealing disc is located at one end of the limiting sealing ring facing the outlet of the elastic air bag.

The filter screen is installed to the outside of above-mentioned intake pipe.

As a further improvement of the technology, the mounting disc is fixedly mounted on the inner side of the mounting pipe through three third connecting rods, a mounting groove is formed in the inner side of the valve plug, one end of the second spring is fixedly mounted on the inner end face of the mounting groove, and the other end of the second spring is fixedly mounted on the mounting disc; one end of the second guide rod is fixedly arranged on the inner end surface of the mounting groove, and the other end of the second guide rod penetrates through the mounting disc; a limiting ring is fixedly mounted on the second guide rod and matched with the mounting disc.

As a further improvement of the technology, the inner side of the sliding adjusting structure is provided with a sliding groove for a sliding installation groove of the adjusting structure, the inner circular surface of the sliding groove is provided with two symmetrically distributed penetrating sliding grooves, and one side of each sliding groove is provided with an installation sliding groove; two gag lever posts are respectively slidable mounting in two spouts, and one side of two gag lever posts is fixed mounting respectively has a spring mounting panel, installs a third spring between every spring mounting panel and the installation spout that corresponds respectively.

As a further improvement of the technology, the inner side of the adjusting mechanism is provided with a pull rope hole for the pull rope to pass through.

As a further improvement of the technology, the inner circular surface of the circular hole is provided with an elastic structure.

As a further improvement of the present technology, the third spring is a compression spring and has a pre-pressure.

Compared with the traditional protective mask technology, the beneficial effects of the design of the invention are as follows:

1. when the oxygen hose is in a straightened state in the use process, when a wearer shakes the head bag, the oxygen hose in the straightened state pulls the mask to deviate, and medical staff needs to assist to wear the mask again; when a wearer shakes the head bag, the oxygen tube is pulled to drive the oxygen tube access structure to slide and be separated from the mounting tube, and in this state, after the wearer finds that the oxygen tube access structure and the mounting tube are separated, the oxygen tube access structure and the mounting tube can be reinstalled by manually pulling the pull ring.

2. When the mask designed by the invention exhales, most of the exhaled air can be directly exhausted to the outside through the internal channel of the elastic inner bag and cannot be left on the inner side of the mask, namely, the air is not breathed on the inner side of the mask, water drops are formed on the inner wall surface of the mask, and the wearer can feel warm and wet and the chin can grow bacteria.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic view of the mounting of the retainer ring.

Fig. 4 is a schematic view of the installation of the outer face mask and the inner face mask.

Fig. 5 is a schematic view of an outer face mask construction.

Fig. 6 is a schematic view of the inner face mask construction.

Fig. 7 is a schematic view of the gas feed adjustment mechanism.

FIG. 8 is a schematic view of the structure of the gas introduction tube and the installation tube.

FIG. 9 is a schematic view showing the internal structure of the gas introduction tube and the installation tube.

Fig. 10 is a schematic view of the check valve structure.

FIG. 11 is a schematic view of a valve plug configuration.

Fig. 12 is a structural schematic diagram of the slide adjusting structure.

Fig. 13 is an installation view of the oxygen hose connection structure.

Number designation in the figures: 1. an outer face mask; 2. a plastic rod; 3. an outer bladder; 4. a gas input regulating mechanism; 5. an inner face mask; 6. an elastic inner bag; 7. a one-way valve; 8. a fixing ring; 9. a first connecting rod; 10. a gas introduction pipe; 11. a square groove; 12. a first inclined plane; 13. a first straight face; 14. installing a pipe; 15. a limiting clamping groove; 16. a guide groove; 17. a first spring; 18. an oxygen hose access structure; 19. a sliding adjustment structure; 20. a valve plug; 21. pulling a rope; 22. a pull ring; 23. a guide wheel; 24. tightening the ring; 25. a second connecting rod; 26. a first fixed disk; 27. sealing the disc; 28. a limiting sealing ring; 29. a limiting disc; 30. a first guide bar; 31. an oxygen tube; 32. an arc-shaped baffle plate; 33. a third connecting rod; 34. a second guide bar; 35. mounting a disc; 36. a limiting ring; 37. a second spring; 38. mounting grooves; 39. a second inclined plane; 40. a second straight face; 42. an adjustment structure; 43. a limiting rod; 44. a third spring; 45. a chute; 46. a sliding groove; 47. installing a chute; 48. a guide block; 49. a rope pulling hole; 50. a filter screen; 51. an air inlet pipe; 52. a circular hole; 53. a spring mounting plate; 54. a connecting plate; 55. and a fourth spring.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, the gas-filled mask comprises an outer-layer mask 1, a plastic rod 2, an outer bag 3, a gas input adjusting mechanism 4, an inner-layer mask 5, an elastic inner bag 6, a one-way valve 7 and a fixing ring 8, wherein the fixing ring 8 is fixedly arranged on the front side of the outer-layer mask 1 through the plastic rod 2 as shown in fig. 1 and 3; as shown in fig. 1, 4 and 5, one end of the outer bag 3 is fixedly arranged at the front side of the outer face mask 1, the other end is fixedly arranged on the fixing ring 8, and the outer bag 3 is communicated with the inner side of the outer face mask 1; as shown in fig. 2, the inner face mask 5 is installed inside the outer face mask 1, as shown in fig. 4 and 6, the front side of the inner face mask 5 is fixedly installed with an elastic inner bag 6 communicated with the inner face mask, as shown in fig. 1, one end of the elastic inner bag 6 is fixedly installed on a fixing ring 8, as shown in fig. 4, the other end of the elastic inner bag 6 is fixedly connected with the outer face mask through three first connecting rods 9 which are uniformly distributed in the circumferential direction; as shown in fig. 2, a one-way valve 7 for discharging air is respectively arranged at the joint of the elastic inner bag 6 and the inner face mask 5 and at the outlet of the elastic inner bag 6; the elastic inner bag 6 is positioned at the inner side of the outer bag 3; as shown in fig. 1 and 7, the gas input adjusting mechanism 4 is mounted on the side wall of the outer face mask 1.

According to the invention, due to the characteristics of the plastic material of the plastic rod 2, when in use, if the elastic inner bag 6 and the outer bag 3 deviate from the front end of the outer layer mask 1, a user can manually pull the plastic rod 2 to manually adjust one ends of the elastic inner bag 6 and the outer bag 3, which are far away from the outer layer mask 1, so that the elastic inner bag 6 and the outer bag 3 are kept at the front side of the outer layer mask 1 as far as possible in the use process, and the fluency of gas flow in the elastic inner bag 6 and the outer bag 3 is ensured. On the other hand, the elastic inner bag 6 and the outer bag 3 can be moved to proper positions by adjusting the plastic rod 2 under the condition of ensuring smooth breathing according to the lying position of the patient.

As shown in fig. 7, the gas input adjusting mechanism 4 includes a gas inlet pipe 51, a gas inlet pipe 10, a mounting pipe 14, a first spring 17, an oxygen pipe connection structure 18, a sliding adjusting structure 19, a valve plug 20, and a pulling rope 21, wherein as shown in fig. 8, one end of the gas inlet pipe 10 is fixedly mounted on the outer wall surface of the outer mask 1, and the gas inlet pipe 10 is communicated with the outer mask 1; the outer circle surface of the gas leading-in pipe 10 is provided with a circular hole 52 which is communicated with the inside and the outside, and the gas leading-in pipe 10 is provided with a downward concave square groove 11; the mounting pipe 14 is mounted at one end of the gas inlet pipe 10 far away from the outer face mask 1, and the inner circular surface of the gas inlet pipe 10 near one end of the mounting pipe 14 is provided with a circular first inclined surface 12 and a circular first straight surface 13; an inlet pipe 51 is fixedly installed on the outer circumferential surface of the gas introduction pipe 10, and as shown in fig. 7, a check valve 7 for only gas to enter is installed in the inlet pipe 51 near the inlet. After the mask is worn, if the breathing machine is not started to work or the oxygen input is disconnected, a wearer can inhale outside air through the air inlet pipe 51, so that normal breathing is ensured; the filter screen 50 is designed to filter and sterilize the air inhaled by the wearer.

As shown in fig. 11, one end of the valve plug 20 is fixedly installed with the arc-shaped baffle 32, and the other end of the valve plug 20 is provided with an annular second inclined surface 39 and an annular second straight surface 40, as shown in fig. 7 and 9, the valve plug 20 is slidably installed in the gas introducing pipe 10, the second inclined surface 39 on the valve plug 20 is matched with the first inclined surface 12 in the gas introducing pipe 10, and the second straight surface 40 on the valve plug 20 is matched with the second straight surface 40 in the gas introducing pipe 10; a pre-pressed first spring 17 is arranged between the valve plug 20 and the gas inlet pipe 10; as shown in fig. 12, one end of the sliding adjusting structure 19 is a tapered structure, the sliding adjusting structure 19 is slidably mounted in the mounting tube 14 through the matching of the guide block 48 and the guide groove 16, and two limiting rods 43 for limiting the relative sliding between the sliding adjusting structure 19 and the mounting tube 14 are symmetrically and slidably mounted in the sliding adjusting structure 19; an adjusting structure 42 is slidably mounted in the middle of the inner side of the sliding adjusting structure 19, a conical surface is arranged on the adjusting structure 42, and one end of the adjusting structure 42, which is far away from the conical surface, extends out of one end of the conical structure of the sliding adjusting structure 19; a spring mounting plate 53 is fixedly mounted on one side, which is not provided with the conical surface, of the sliding adjusting mechanism through three connecting plates 54 which are uniformly distributed in the circumferential direction, and a fourth spring 55 is mounted between the spring mounting plate 53 and the adjusting mechanism 42; the fourth spring 55 is a compression spring and has a pre-pressure; one end of each of the two limiting rods 43 is engaged with the adjusting structure 42, when the adjusting structure 42 slides relative to the sliding adjusting structure 19 and towards one side of the gas inlet pipe 10, the engaged end of each of the two limiting rods 43 and the adjusting structure 42 is changed from a state of being engaged with the circular end of the adjusting structure 42 to a state of being engaged with the conical structure of the adjusting structure 42, and the two limiting rods 43 release the limit of the sliding adjusting structure 19 and the mounting pipe 14; when oxygen is input, the valve plug 20 slides relative to the gas inlet pipe 10, and after the valve plug 20 is completely opened, the valve plug 20 blocks the gas inlet pipe 51 through the outer circumferential surface and the arc-shaped baffle 32; one end of the oxygen tube inserting structure 18 is a tapered structure, as shown in fig. 9, a pulling rope 21 is fixedly installed at the tapered structure end of the oxygen tube inserting structure 18, as shown in fig. 7, the other end of the pulling rope 21 passes through the adjusting structure 42, the spring mounting plate 53 and the sliding adjusting structure 19 and penetrates out of a circular hole 52 formed in the gas introducing tube 10; an oxygen pipe 31 connected with the breathing machine is nested on the oxygen access structure; the sliding adjusting mechanism and the oxygen pipe access structure 18 are provided with air holes; the volume of the elastic inner bag 6 is maximum under the elastic action without any external force; the volume of the outer bag 3 is larger than that of the elastic inner bag 6 when the volume is maximum, and the outer bag 3 has no elasticity.

Above-mentioned inner mask 5 can just be greater than the mouth nose region to the mouth nose of wearer and inner mask 5 size after wearing, simultaneously and have the clearance between the wearer's face.

The size and number of the air holes in the sliding adjusting structure 19 and the oxygen pipe access structure 18 can ensure the smooth flow of oxygen, and the figure is only schematic.

The added arc baffle 32 has the function of reducing the opening stroke of the valve plug 20, and ensures that the air inlet pipe 51 can be blocked by the valve plug 20 through the outer circular surface of the valve plug 20 and the arc baffle 32 nine after the valve plug 20 is opened until the channel between the installation pipe 14 and the gas inlet pipe 10 is completely opened; the ambient air does not enter through the inlet tube 51 at this time when the person inhales, affecting the oxygen concentration.

The first spring 17 has pre-pressure, and pressure is provided for the valve plug 20 through the pre-pressure, so that the valve plug 20 is ensured to seal the installation pipe 14 and the gas inlet pipe 10 when oxygen is not input, and the expired gas of people can not enter the oxygen supply pipeline when oxygen is not input.

The second spring 37 plays a role in resetting the valve plug 20, the limiting ring 36 plays a role in positioning the sliding of the valve plug 20, and ensures that the valve plug 20 stops sliding after blocking the air inlet pipe 51 in the pushed process, and the valve plug 20 cannot continue to slide under the pushing of oxygen, so that one end of the valve plug 20, which is back to the gas inlet pipe 10, crosses the air inlet pipe 51, the air inlet pipe 51 is opened again, or the square groove 11 is closed, and the flow of oxygen is influenced. The mounting groove 38 functions to reduce the space required for mounting the second spring 37.

When the oxygen tube 31 is in a straightened state during use, when a wearer shakes the head of the mask, the oxygen tube 31 is pulled to drive the oxygen tube access structure 18 to slide and be separated from the mounting tube 14, and in this state, after the wearer finds that the oxygen tube access structure and the mounting tube 14 are separated, the oxygen tube access structure and the mounting tube 14 can be mounted again by manually pulling the pull ring 22; the reason why the oxygen access structure and the mounting ring can be pulled apart is that the oxygen tube 31 in a straight state is prevented from pulling the mask to deviate due to shaking and needing to be re-worn in the use process of a wearer, and compared with the situation that medical staff need to assist in re-wearing the mask, the oxygen tube access structure 18 and the mounting tube 14 are connected again by manually pulling the pull ring 22, the mask is convenient to operate.

As shown in fig. 13, the mutually matching ends of the adjusting structure 42 and the oxygen tube connection structure 18 of the present invention have conical surfaces, so that the reason for the design is to ensure that when the oxygen tube connection structure 18 is pulled by the pulling rope 21 in any state, the end surface of the conical surface installation tube 14 is contacted and laterally swung, so that the oxygen tube connection structure 18 drives the oxygen tube 31 to enter the inner cavity of the installation tube 14.

The gas inlet pipe 10, the gas inlet pipe 51 and the mounting pipe 14 are all relatively hard pipes, so that the operation of an internal transmission structure is convenient, and the oxygen pipe 31 is a common hose.

As shown in fig. 8, two limiting slots 15 are symmetrically formed on the inner circumferential surface of the mounting tube 14, and the two limiting slots 15 are correspondingly matched with the two limiting rods 43 one by one.

As shown in fig. 8, the inner circumferential surface of the mounting tube 14 is symmetrically provided with two guide grooves 16, as shown in fig. 12, the outer circumferential surface of the sliding adjusting structure 19 is symmetrically provided with two guide blocks 48, as shown in fig. 7, and the sliding adjusting structure 19 is mounted in the mounting tube 14 by the sliding fit of the two guide blocks 48 and the two guide grooves 16.

As shown in fig. 9, a pull ring 22 manually pulled by a user is fixedly installed at one end of the pull rope 21 extending out of the gas introducing pipe 10; a guide wheel 23 for guiding the pulling rope 21 is installed in the gas introduction pipe 10.

As shown in fig. 9, a plurality of tightening rings 24 for tightening the nestedly-installed oxygen pipes 31 are uniformly installed on the outer circumferential surface of the end of the oxygen pipe connecting structure 18 not having a tapered structure.

As shown in fig. 10, the check valve 7 includes a second connecting rod 25, a first fixing disk 26, a sealing disk 27, a limiting sealing ring 28, a limiting disk 29, and a first guiding rod 30, wherein the first fixing disk 26 is fixedly mounted on the inner side of the corresponding position of the air inlet pipe 51 and the elastic airbag through three second connecting rods 25, one end of the first guiding rod 30 is fixedly mounted on the first fixing disk 26, the other end of the first guiding rod 30 is fixedly mounted with the limiting disk 29, and the limiting sealing ring 28 is fixedly mounted on the inner circular surface of the corresponding position of the air inlet pipe 51 and the elastic airbag; the sealing disc 27 is slidably mounted on the first guide bar 30 and the sealing disc 27 cooperates with the limit sealing ring 28. After the gas flows through the side of the sealing disc 27 opposite to the limit sealing ring 28, the sealing disc 27 is tightly pressed on the limit sealing ring 28 to block the channel; after the gas flows through the side of the sealing disk 27 facing the limit sealing ring 28, the sealing disk 27 is pushed open by the gas and the passage is opened.

As shown in fig. 7, for the check valve 7 installed at the intake pipe 51, the sealing disk 27 is located at the end of the limit sealing ring 28 facing away from the inlet of the intake pipe 51; as shown in fig. 2, for the two check valves 7 installed at the elastic balloon, the sealing disc 27 is located at the end of the retainer sealing ring 28 facing the outlet of the elastic balloon.

As shown in fig. 7, a filter net 50 is attached to the outside of the intake pipe 51.

As shown in fig. 11, the mounting plate 35 is fixedly mounted on the inner side of the mounting tube 14 through three third connecting rods 33, the inner side of the valve plug 20 is provided with a mounting groove 38, one end of a second spring 37 is fixedly mounted on the inner end surface of the mounting groove 38, and the other end of the second spring 37 is fixedly mounted on the mounting plate 35; one end of the second guide rod 34 is fixedly installed on the inner end surface of the installation groove 38, and the other end of the second guide rod 34 passes through the installation disc 35; a limiting ring 36 is fixedly mounted on the second guide rod 34, and the limiting ring 36 is matched with the mounting disc 35. The second guide rod 34 guides the valve disc and also prevents the second spring 37 from bending after being compressed.

As shown in fig. 12, the inner side of the sliding adjusting structure 19 is provided with a sliding groove 46 for the sliding mounting groove 38 of the adjusting structure 42, the inner circular surface of the sliding groove 46 is provided with two symmetrically distributed through sliding grooves 45, and one side of each of the two sliding grooves 45 is provided with a mounting sliding groove 4745; the two limiting rods 43 are respectively slidably mounted in the two sliding grooves 45, one side of each limiting rod 43 is respectively fixedly mounted with a spring mounting plate 53, and a third spring 44 is respectively mounted between each spring mounting plate 53 and the corresponding mounting sliding groove 4745. The third spring 44 acts to return the stopper rod 43.

As shown in fig. 12, a rope 21 hole through which the rope 21 passes is formed inside the adjustment mechanism.

The inner surface of the circular hole 52 has an elastic structure to ensure the sliding of the rope 21, but to seal the sliding of the rope 21.

The third spring 44 is a compression spring and has a preload.

Above-mentioned inner mask 5 can just be greater than the mouth nose region to the mouth nose of wearer and inner mask 5 size after wearing, simultaneously and have the clearance between the wearer's face. This clearance can guarantee that the oxygen in the outer face guard 1 can enter into the mouth nose when the people breathes in, guarantees simultaneously that most steam is gathered in inlayer face guard 5 when the person of wearing exhales, and the elastic inner bag 6 of being convenient for inhales.

The specific working process is as follows: when the mask designed by the invention is used, when the oxygen tube 31 and the mounting tube 14 are connected, the pull ring 22 is pulled, so that the pull ring 22 drives the pull rope 21 to move, the pull rope 21 moves to pull the oxygen access structure, so that the oxygen access structure is tightly propped against one end of the adjusting structure 42 extending out of the sliding adjusting structure 19, when the pull rope 21 is continuously pulled, the adjusting structure 42 is extruded by the oxygen access structure to slide along the sliding groove 46, in the sliding process of the adjusting structure 42, the matched end of the two limiting rods 43 and the adjusting structure 42 is changed from the state matched with the circular surface end of the adjusting structure 42 into the state matched with the conical structure of the adjusting structure 42, and the two limiting rods 43 relieve the limit of the sliding adjusting structure 19 and the mounting tube 14; then, pulling the pulling rope 21 is continued, the pulling rope 21 pushes the sliding adjusting structure 19 to slide in the mounting tube 14 together through the oxygen access structure, and finally the oxygen access structure is also inserted into the mounting tube 14, so that the oxygen tube 31 is connected with the mounting tube 14.

After the oxygen hose 31 is connected, the mask is worn, the respirator is opened, the respirator starts to work, oxygen is input, oxygen entering through the oxygen hose 31 enters the installation pipe 14 through the air holes on the oxygen access structure and the sliding adjusting structure 19, the oxygen entering into the installation pipe 14 presses the valve plug 20, so that the valve plug 20 slides towards one side of the gas inlet pipe 10, during the sliding process, the first inclined surface 12 and the second inclined surface 39 which are originally matched with each other to seal the installation pipe 14 and the gas inlet pipe 10 are gradually separated from each other between the first straight surface 13 and the second straight surface, so that the channel between the installation pipe 14 and the gas inlet pipe 10 is opened, after the channel between the installation pipe 14 and the gas inlet pipe 10 is completely opened, the air inlet pipe 51 is blocked by the outer circular surface of the valve plug 20 and the arc-shaped baffle 32, the oxygen flows from one side of the valve plug 20 to the other side through the square groove on the gas inlet pipe 10, enters the outer face mask 1 and diffuses into the space between the inner face mask 5, the elastic inner bag 6 and the outer bag 3, and the outer bag 3 is gradually expanded along with the increase of the gas between the outer bag 3 and the elastic inner bag 6; in the process, a small part of oxygen enters the inner face mask 5 and enters the elastic inner bag 6 through the close one-way valve 7, the gas entering the elastic inner bag 6 cannot enter the inner face mask 5 again under the action of the one-way valve 7, namely, the oxygen in the elastic inner bag 6 cannot be sucked out when breathing in, and the design reason can prevent the original exhaled foul smell of the wearer existing in the elastic inner bag 6 from being sucked by the wearer again. When a wearer inhales, the air pressure in the mask is reduced, meanwhile, air between the outer bag 3 and the elastic inner bag 6 can be gradually sucked away by wearing, and along with the gradual reduction of the air in the outer bag 3, the pressure of the external air outside the outer bag 3 is larger than the air pressure in the outer bag 3, so that the outer bags 3 are extruded and stacked mutually, the stacked outer bags 3 cling to the elastic inner bag 6 and extrude and compress the elastic inner bag 6, the elastic inner bag 6 is reduced, the force of the elastic inner bag 6 is stored, and main exhaled air and water vapor remained in the elastic inner bag 6 are discharged in the reduction process; when a wearer exhales, the exhaled air can be exhaled through the two one-way valves 7 along the inner side channel of the inner bag, in the process, due to the exhaled air of the wearer, the pressure in the mask is increased, so that the volume of the elastic inner bag 6 is increased due to the elastic action of the elastic inner bag 6, and along with the gradual enlargement of the elastic inner bag 6, most of the exhaled air of the wearer can be inhaled into the bag; while the elastic inner bag 6 is enlarged to support the outer bag 3, the oxygen tube 31 and the oxygen infused into the outer mask 1 by the gas input mechanism will flow into the gap between the outer cover and the elastic inner bag 6 again, and finally the volume of the outer cover is larger than that of the elastic inner bag 6.

When the oxygen tube 31 is in the straightened state during use, when the wearer shakes the head of the mask, the oxygen tube 31 is pulled to slide the oxygen tube access structure 18 away from the mounting tube 14, and in this state, the oxygen tube access structure and the mounting tube 14 can be reinstalled by manually pulling the pull ring 22 after the wearer finds that the oxygen tube access structure and the mounting tube 14 are disconnected.

Claims

1. A respirator protective facial mask which characterized in that: the gas-liquid separation device comprises an outer-layer mask, a plastic rod, an outer bag, a gas input adjusting mechanism, an inner-layer mask, an elastic inner bag, a one-way valve and a fixing ring, wherein the fixing ring is fixedly arranged on the front side of the outer-layer mask through the plastic rod; one end of the outer bag is fixedly arranged on the front side of the outer layer face mask, the other end of the outer bag is fixedly arranged on the fixing ring, and the outer bag is communicated with the inner side of the outer layer face mask; the inner face mask is arranged on the inner side of the outer face mask, an elastic inner bag communicated with the inner face mask is fixedly arranged on the front side of the inner face mask, one end of the elastic inner bag is fixedly arranged on the fixing ring, and the other end of the elastic inner bag is fixedly connected with the outer face mask through three first connecting rods which are uniformly distributed in the circumferential direction; a one-way valve for discharging air is respectively arranged at the joint of the elastic inner bag and the inner face mask and at the outlet of the elastic inner bag; the elastic inner bag is positioned at the inner side of the outer bag; the side wall of the outer layer mask is provided with a gas input adjusting mechanism;

the gas input adjusting mechanism comprises a gas inlet pipe, a mounting pipe, a first spring, an oxygen pipe access structure, a sliding adjusting structure, a valve plug and a pull rope, wherein one end of the gas inlet pipe is fixedly mounted on the outer wall surface of the outer layer mask, and the gas inlet pipe is communicated with the outer layer mask; the outer circular surface of the gas leading-in pipe is provided with a circular hole which is communicated with the inside and the outside, and the gas leading-in pipe is provided with a downward concave square groove; the mounting pipe is mounted at one end of the gas inlet pipe, which is far away from the outer-layer mask, and the inner circular surface of the gas inlet pipe, which is close to one end of the mounting pipe, is provided with an annular first inclined surface and an annular first straight surface; the outer circular surface of the gas inlet pipe is fixedly provided with a gas inlet pipe, and a one-way valve only allowing gas to enter is arranged in the gas inlet pipe and close to an inlet;

one end of the valve plug is fixedly provided with an arc-shaped baffle, the other end of the valve plug is provided with an annular second inclined surface and an annular second straight surface, the valve plug is arranged in the gas leading-in pipe in a sliding mode, the second inclined surface on the valve plug is matched with the first inclined surface in the gas leading-in pipe, and the second straight surface on the valve plug is matched with the second straight surface in the gas leading-in pipe; a first pre-pressed spring is arranged between the valve plug and the gas inlet pipe; one end of the sliding adjusting structure is a conical structure, the sliding adjusting structure is slidably mounted in the mounting pipe through the matching of the guide block and the guide groove, and two limiting rods which have a limiting effect on the relative sliding of the sliding adjusting structure and the mounting pipe are symmetrically and slidably mounted in the sliding adjusting structure; an adjusting structure is slidably mounted in the middle of the inner side of the sliding adjusting structure, a conical surface is arranged on the adjusting structure, and one end, far away from the conical surface, of the adjusting structure extends out of one end of a conical structure of the sliding adjusting structure; one side of the sliding adjusting mechanism, which is not provided with the conical surface, is fixedly provided with a spring mounting plate through three connecting plates which are uniformly distributed in the circumferential direction, and a fourth spring is arranged between the spring mounting plate and the adjusting structure; the fourth spring is a compression spring and has pre-pressure; one end of each limiting rod is matched with the adjusting structure, when the adjusting structure slides relative to the adjusting structure and slides towards one side of the gas inlet pipe, the matched end of each limiting rod and the adjusting structure is changed from a state of being matched with the round end of the adjusting structure to a state of being matched with the conical structure of the adjusting structure, and the two limiting rods relieve the limitation on the sliding adjusting structure and the mounting pipe; when oxygen is input, the valve plug slides relative to the gas inlet pipe, and after the valve plug is completely opened, the valve plug blocks the gas inlet pipe through the outer circular surface and the arc-shaped baffle; one end of the oxygen pipe access structure is of a conical structure, a pull rope is fixedly arranged at the end of the conical structure of the oxygen pipe access structure, and the other end of the pull rope penetrates through the adjusting structure, the spring mounting plate and the sliding adjusting structure and penetrates out of a round hole formed in the gas inlet pipe; an oxygen pipe connected with the breathing machine is nested on the oxygen access structure; the sliding adjusting mechanism and the oxygen pipe access structure are provided with air holes; the volume of the elastic inner bag is maximum under the elastic action of the elastic inner bag when no external force exists; the volume of the outer bag is larger than that of the elastic inner bag when the volume is maximum, and the outer bag has no elasticity;

2. A respirator facemask according to claim 1, wherein: two limiting clamping grooves are symmetrically formed in the inner circular surface of the mounting pipe and are matched with the two limiting rods in a one-to-one correspondence mode;

3. A respirator facemask according to claim 1, wherein: one end of the pull rope extending out of the gas leading-in pipe is fixedly provided with a pull ring which is manually pulled by a user; the gas leading-in pipe is internally provided with a guide wheel which plays a role in guiding the pulling rope.

4. A respirator facemask according to claim 1, wherein: the outer circular surface of one end of the oxygen pipe access structure, which is not provided with a conical structure, is uniformly provided with a plurality of tightening rings which play a tightening role in tightening the nested oxygen pipes.

5. A respirator facemask according to claim 1, wherein: the check valve comprises second connecting rods, a first fixed disc, a sealing disc, a limiting sealing ring, a limiting disc and a first guide rod, wherein the first fixed disc is fixedly arranged on the inner side of the corresponding position of the air inlet pipe and the elastic air bag through three second connecting rods; the sealing disc is slidably arranged on the first guide rod and matched with the limiting sealing ring;

for the one-way valve arranged at the air inlet pipe, the sealing disc is positioned at one end of the limiting sealing ring, which is back to the inlet of the air inlet pipe; for the two one-way valves arranged at the elastic air bag, the sealing disc is positioned at one end of the limiting sealing ring facing to the outlet of the elastic air bag;

the filter screen is installed to the outside of above-mentioned intake pipe.

6. A respirator facemask according to claim 1, wherein: the mounting disc is fixedly mounted on the inner side of the mounting pipe through three third connecting rods, a mounting groove is formed in the inner side of the valve plug, one end of a second spring is fixedly mounted on the inner end face of the mounting groove, and the other end of the second spring is fixedly mounted on the mounting disc; one end of the second guide rod is fixedly arranged on the inner end surface of the mounting groove, and the other end of the second guide rod penetrates through the mounting disc; a limiting ring is fixedly mounted on the second guide rod and matched with the mounting disc.

7. A respirator facemask according to claim 1, wherein: the inner side of the sliding adjusting structure is provided with a sliding groove for a sliding installation groove of the adjusting structure, the inner circular surface of the sliding groove is provided with two penetrating sliding grooves which are symmetrically distributed, and one side of each sliding groove is provided with an installation sliding groove; two gag lever posts are respectively slidable mounting in two spouts, and one side of two gag lever posts is fixed mounting respectively has a spring mounting panel, installs a third spring between every spring mounting panel and the installation spout that corresponds respectively.

8. A respirator facemask according to claim 1, wherein: the inner side of the adjusting mechanism is provided with a pull rope hole for the pull rope to pass through.

9. A respirator facemask according to claim 1, wherein: the inner circle surface of the circular hole is provided with an elastic structure.

10. A respirator mask according to claim 7, wherein: the third spring is a compression spring and has pre-pressure.