An emergency rescue head-mounted device integrating breathing and head protection

Abstract

The present invention discloses an emergency rescue head-mounted device with integrated breathing and head protection, comprising an integrated head-mounted device consisting of a helmet, a mask and an oronasal breathing mask, wherein the oronasal breathing mask is located on the inner side of the mask, and when the mask seals and covers the wearer's face, the oronasal breathing mask just seals and covers the wearer's mouth and nose; the helmet and the mask are connected by a plurality of straps; the interlocking wearing state of the helmet and the mask in this case is more stable, not easy to fall off, and improves the sealing performance, and is suitable for emergency rescue wearing protection in harsh environments.

Description

Technical Field

[0001] The invention belongs to the field of head-mounted devices. Background Art

[0002] In emergency rescue situations, gas masks and helmets are generally independent tools. When worn at the same time, not only will the straps interfere with each other, but the wearing state will also be unstable and easy to fall off.

[0003] When a gas mask uses an activated carbon filter as the main filtering solution, if the wearer is in an environment with high dust concentration, within a short period of time, all the air inlet groups on the activated carbon filter will gradually accumulate dust and become blocked during the continuous inhalation process. During the operation, the wearer will have irreversible difficulty in breathing over time, which will prompt the wearer to take off the gas mask without authorization; thereby affecting the sustainability of the activated carbon filter. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an emergency rescue head-mounted device that integrates breathing and head protection. The interlocking wearing state of the helmet and mask is more stable, and at the same time, the activated carbon filter device is more effective and sustainable in high-concentration dust environments.

[0005] Technical solution: To achieve the above-mentioned purpose, the present invention provides an emergency rescue head-mounted device with integrated breathing and head protection, including an integrated head-mounted device consisting of a helmet, a mask and an oronasal breathing mask. The oronasal breathing mask is on the inner side of the mask. When the mask seals the wearer's face, the oronasal breathing mask just seals the wearer's mouth and nose. The helmet and the mask are connected by a number of straps.

[0006] Furthermore, the front side of the mask is an observation window, and a transparent front cover is sealed on the observation window.

[0007] Furthermore, the upper end of the mask is connected to the front of the helmet through a first strap; the middle edge of the mask is connected to the middle edge of the helmet through a pair of second straps; the lower edge of the mask is connected to the rear edge of the helmet through a pair of third straps, and the first strap, the second strap and the third strap can all be adjusted in tightness.

[0008] Furthermore, an inhalation tube and an exhalation tube are fixedly arranged on the mask, and the inner ends of the inhalation tube and the exhalation tube are connected to the inside of the mouth and nose breathing mask; the outer end of the exhalation tube is connected to the outside; the outer end of the inhalation tube is provided with an external thread, so that the outer end of the inhalation tube can be detachably connected to an activated carbon filter, an oxygen supplier or a compressed air supplier.

[0009] Furthermore, one-way valves are provided in both the inhalation tube and the exhalation tube; the one-way valve in the inhalation tube prevents the gas inside the mouth and nose breathing mask from being discharged through the inhalation tube; the one-way valve in the exhalation tube prevents the external air from being inhaled into the mouth and nose breathing mask through the exhalation tube.

[0010] Furthermore, the activated carbon filter includes a disc-shaped main shell, an internal threaded barrel is coaxially integrated on the inner side of the connecting end of the disc-shaped main shell, the inner wall of the internal threaded barrel has an internal thread, and the external thread of the outer end of the intake pipe is threadedly sleeved with the internal thread of the internal threaded barrel; a disc-shaped sub-shell is coaxially integrated on the end of the disc-shaped main shell away from the internal threaded barrel; an inner annular wall is coaxially integrated inside the disc-shaped main shell; a plurality of separators along the radial direction are arranged in a circular array between the inner annular wall and the outer circumferential wall of the disc-shaped main shell, and the plurality of separators divide the annular cavity between the inner annular wall and the outer circumferential wall of the disc-shaped main shell into a plurality of fan-shaped activated carbon bins distributed in a circular array, and each fan-shaped activated carbon bin is filled with activated carbon particles; a plurality of hollow air inlet hole groups are distributed in a circular array on the outer circumferential wall of the disc-shaped main shell, and a plurality of hollow filtered air outlet hole groups are distributed in a circular array on the inner annular wall; a rotary air distribution device is coaxially arranged on the inner side of the inner annular wall.

[0011] Furthermore, the rotary gas distribution device includes a cylindrical rotary ring wall, and the inner wall at the upper end of the rotary ring wall and the outer wall of the internal threaded cylinder are rotatably matched through a bearing; a rotary disk is coaxially integrated in the middle of the inner side of the rotary ring wall, an air port is arranged at the axis of the rotary disk, and a vertically connected transverse air guide pipe and a longitudinal pressure transmission pipe are arranged below the rotary disk, and the connecting part of the transverse air guide pipe and the longitudinal pressure transmission pipe is connected to the air port together; an air distribution box is integrated on the outer wall of the rotary ring wall, and a part of the air distribution box away from the axis of the rotary ring wall is provided. The end of the air distribution box is slidably fitted with the inner arc surface of the inner ring wall, and the air distribution box contains an air distribution bin which is open on the side away from the axis of the rotating ring wall, and the air extraction end of the transverse air duct is connected to the air distribution bin through the connecting hole on the rotating ring wall; during the rotation of the air distribution box with the rotating ring wall, the air distribution bin in the air distribution box is successively connected to each filtered air outlet hole group distributed in a circular array on the inner ring wall; a fan-shaped activated carbon bin connected to the air distribution bin through the filtered air outlet hole group at its location is recorded as a fan-shaped activated carbon bin.

[0012] Furthermore, a circle of transmission teeth is provided on the inner wall at the lower end of the rotating ring wall; a battery and a motor are installed in the disc-shaped sub-shell, and the output end of the motor is driven and connected to an adjusting gear, which is meshed with the transmission teeth; a partition wall is formed between the disc-shaped main shell and the disc-shaped sub-shell; and a motor trigger switch is provided at the axis center of the disc-shaped sub-shell.

[0013] Furthermore, the motor trigger switch includes a central cylinder integrated with the axis of the disc-shaped sub-shell, and the lower end of the longitudinal pressure transmission tube is provided with an elastic sealing outer edge, and the elastic sealing outer edge is rotatably matched with the inner wall of the upper end of the central cylinder and the outer ring of the elastic sealing outer edge; an electrode fixing disk is fixedly provided on the inner wall of the central cylinder, and a through hole is provided at the axis of the electrode fixing disk, and the lower end of the longitudinal pressure transmission tube is connected to the bottom of the electrode fixing disk through the through hole; a first switch electrode and a second switch electrode are provided on the lower side of the electrode fixing disk, and the lower ends of the first switch electrode and the second switch electrode are electrically connected to the first spring contact and the second spring contact respectively; a metal disk is coaxially provided below the electrode fixing disk, and the lower side of the metal disk is connected through The coaxial tension spring is connected to the bottom wall of the disc-shaped auxiliary housing; it also includes a tapered annular flexible diaphragm that is thin at the bottom and thick at the top, the lower end contour of the tapered annular flexible diaphragm is sealed and fixedly connected to the outer contour of the metal disk, and the upper end outer contour of the tapered annular flexible diaphragm is sealed and fixedly connected to the inner wall of the central cylinder; in the initial state, the tension spring applies a downward tension to the metal disk, so that the tapered annular flexible diaphragm is in a taut state; the lower end of the central cylinder is connected to the external atmospheric pressure environment through the air pressure balance hole; when a sufficiently strong negative pressure is formed above the metal disk, the metal disk overcomes the tension of the tension spring under the action of the upper and lower pressure differences and moves upward, so that the metal disk electrically connects the first spring contact and the second spring contact;

[0014] When the first spring contact is electrically connected to the second spring contact, the metal disk, the first spring contact, the second spring contact, the motor and the battery form a closed series circuit.

[0015] Beneficial effect: When the first strap, the second strap and the third strap are all tightened, the mask and the helmet form an interlocking structure, thereby improving the stability of the mask when worn;

[0016] When the a air inlet group is blocked, inhaling forcefully will cause a sufficiently large negative pressure to be generated, and the metal disk will overcome the tension of the tension spring and move upward, so that the metal disk will electrically connect the first spring contact and the second spring contact; the motor is automatically energized, and the air distribution bin in the air distribution box rotates along the axis following the rotating ring wall, so that the air distribution bin gradually deviates from the a fan-shaped activated carbon bin, and connects to another group of new fan-shaped activated carbon bins adjacent to the a fan-shaped activated carbon bin, so that the original a fan-shaped activated carbon bin and a air inlet group enter a dormant state, and the other group of fan-shaped activated carbon bins and air inlet group are switched to the new a fan-shaped activated carbon bin and a air inlet group, and the new a air inlet group is in an unobstructed state, and the new a fan-shaped activated carbon bin is a new activated carbon, so that the wearer's inhalation process returns to normal, and the wearer's inhalation process becomes smooth, achieving smooth breathing for the wearer in a high dust environment and continuity of reliable filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is the overall first-person perspective diagram of the scheme;

[0018] Attached Figure 2 This is a schematic diagram of the overall second perspective of this scheme;

[0019] Attached Figure 3 is a first schematic diagram of a face mask and a transparent front cover;

[0020] Attached Figure 4 This is a schematic diagram of the mask disassembly;

[0021] Attached Figure 5 is a schematic diagram of the structure of an activated carbon filter;

[0022] Attached Figure 6 For attachment Figure 5 aa cross-sectional view;

[0023] Attached Figure 7 It is a schematic diagram of the structure of the rotary gas distribution device;

[0024] Attached Figure 8 Schematic diagram of the circuit consisting of a battery, a motor and two spring contacts. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] As attached Figures 1 to 8 The emergency rescue headgear with integrated breathing and head protection shown in the figure includes an integrated headgear consisting of a helmet 46, a mask 38 and an oronasal breathing mask 39. The oronasal breathing mask 39 is on the inner side of the mask 38. When the mask 38 seals the face of the wearer, the oronasal breathing mask 39 just seals the mouth and nose of the wearer. The front side of the mask 38 is an observation window 41, and a transparent front cover 40 is sealed on the observation window 41, which can be made of glass or acrylic. The helmet 46 is connected to the mask 38 by a plurality of straps; Figure 1 and 2 As shown, the upper end of the mask 38 is connected to the front of the helmet 46 through a first strap 42; the middle edge of the mask 38 is connected to the middle edge of the helmet 46 through a pair of second straps 43; the lower edge of the mask 38 is connected to the rear edge of the helmet 46 through a pair of third straps 44, and the first strap 42, the second strap 43 and the third strap 44 can all be adjusted in tightness; in the worn state, when the first strap 42, the second strap 43 and the third strap 44 are all tightened, an interlocking structure is formed between the mask 38 and the helmet 46, thereby improving the stability of the mask when worn.

[0027] An inhalation tube 37 and an exhalation tube 35 are fixedly arranged on the mask 38, and the inner ends of the inhalation tube 37 and the exhalation tube 35 are connected to the inner side of the mouth and nose breathing mask 39; the outer end of the exhalation tube 35 is connected to the outside; the outer end of the inhalation tube 37 is provided with an external thread, so that the outer end of the inhalation tube 37 can be detachably connected to the activated carbon filter 10, the oxygen supplier or the compressed air supplier. In this case, the outer end of the inhalation tube 37 is detachably connected to the activated carbon filter 10. Figure 3 and 4 As shown; both the inhalation pipe 37 and the exhalation pipe 35 are provided with a one-way valve; the one-way valve in the inhalation pipe 37 prevents the gas inside the mouth and nose breathing mask 39 from being discharged through the inhalation pipe 37; the one-way valve in the exhalation pipe 35 prevents the external air from being inhaled into the mouth and nose breathing mask 39 through the exhalation pipe 35; the working principle when the outer end of the inhalation pipe 37 is connected to the activated carbon filter 10 is as follows:

[0028] After wearing, the helmet 46 is tightly buckled on the worker's head, and at the same time, the mask 38 is tightly covered on the wearer's face under the constraints of the tightened first strap 42, the second strap 43 and the third strap 44, so as to protect the face and eyes. At the same time, the mouth and nose breathing mask 39 just seals the wearer's mouth and nose; since both the inhalation pipe 37 and the exhalation pipe 35 are provided with a one-way valve; when a person exhales, the one-way valve in the inhalation pipe 37 prevents the gas inside the mouth and nose breathing mask 39 from passing through The gas exhaled into the mouth and nose breathing mask 39 is discharged through the inhalation tube 37 and discharged to the outside through the inhalation tube 35; when a person inhales, a negative pressure is generated inside the mouth and nose breathing mask 39 under the action of inhalation, and the one-way valve in the inhalation tube 35 prevents the external air from being inhaled into the mouth and nose breathing mask 39 through the inhalation tube 35; at the same time, the external air is first filtered through the activated carbon filter 10 under the action of the negative pressure generated by inhalation, and then inhaled into the inside of the mouth and nose breathing mask 39 through the inhalation tube 37, and finally inhaled into the human lungs.

[0029] If it is a traditional activated carbon filter 10, there will be the following problems: when the wearer is in an environment with high dust concentration, in a short period of time, all the air inlet groups on the activated carbon filter device will gradually accumulate dust and be gradually blocked during the continuous inhalation process. During the operation, the wearer will have irreversible difficulty in breathing over time, which will prompt the wearer to take off the gas mask without authorization, thereby causing the risk of inhaling a large amount of dust and toxic gas. The activated carbon filter 10 of this solution can solve the above problems, as follows:

[0030] Thus, the sustainability of the activated carbon filter device is affected. When the outer end of the air intake pipe 37 is detachably connected to the activated carbon filter 10 adapted to the high-concentration dust environment, the specific detailed structure of the activated carbon filter 10 is as follows (the activated carbon filter 10 can adapt to the high-concentration dust environment):

[0031] The activated carbon filter 10 comprises a disc-shaped main housing 1, an internal threaded barrel 8 is coaxially integrated with the inner side of the connecting end of the disc-shaped main housing 1, the inner wall of the internal threaded barrel 8 has an internal thread 3, and the external thread of the outer end of the suction pipe 37 is threadedly sleeved with the internal thread 3 of the internal threaded barrel 8; a disc-shaped auxiliary housing 22 is coaxially integrated with one end of the disc-shaped main housing 1 away from the internal threaded barrel 8. Figure 4 and 5 As shown: an inner ring wall 17 is coaxially integrated in the disc-shaped main shell 1; a plurality of radially spaced sheets 34 are arranged in a circumferential array between the inner ring wall 17 and the outer circumferential wall of the disc-shaped main shell 1, and the plurality of spaced sheets 34 divide the annular cavity between the inner ring wall 17 and the outer circumferential wall of the disc-shaped main shell 1 into a plurality of sector-shaped activated carbon bins 2 distributed in a circumferential array, and each sector-shaped activated carbon bin 2 is filled with activated carbon particles; the outer circumferential wall of the disc-shaped main shell 1 is in a circular array. A plurality of hollow air inlet holes 18 are arranged in a circumferential array, and a plurality of hollow filtered air outlet holes 19 are arranged in a circumferential array on the inner ring wall 17; a rotary air distribution device 50 is coaxially arranged on the inner side of the inner ring wall 17; the rotary air distribution device 50 comprises a cylindrical rotary ring wall 11, and the inner wall of the upper end of the rotary ring wall 11 and the outer wall of the internal threaded cylinder 8 are rotatably matched through a bearing 7; a rotary disk 9 is coaxially integrated and arranged in the middle of the inner side of the rotary ring wall 11, An air port 5 is provided at the axis of the rotating disk 9, and a vertically connected transverse air guide pipe 15 and a longitudinal pressure transmission pipe 6 are provided below the rotating disk 9. The connecting part of the transverse air guide pipe 15 and the longitudinal pressure transmission pipe 6 is connected to the air port 5; an air distribution box 16 is integrally provided on the outer wall of the rotating ring wall 11, and one end of the air distribution box 16 away from the axis of the rotating ring wall 11 is slidably fitted with the inner arc surface of the inner ring wall 17, and the air distribution box 16 is open on one side away from the axis of the rotating ring wall 11. The air bin 4 and the air extraction end of the transverse air duct 15 are connected to the air distribution bin 4 through the connecting hole 33 on the revolving ring wall 11; during the rotation of the air distribution box 16 along with the revolving ring wall 11, the air distribution bin 4 in the air distribution box 16 is successively connected to the filtered air outlet hole groups 19 distributed in a circular array on the inner ring wall 17; a fan-shaped activated carbon bin 2 connected to the air distribution bin 4 through the filtered air outlet hole group 19 at its location is recorded as a fan-shaped activated carbon bin 2.1.

[0032] A circle of transmission gear bodies 32 is arranged on the inner wall at the lower end of the rotating ring wall 11; a battery and a motor 13 are installed in the disc-shaped auxiliary housing 22, and an adjusting gear 14 is driven and connected to the output end of the motor 13, and the adjusting gear 14 is meshed with the transmission gear body 32; a partition wall 12 is formed between the disc-shaped main housing 1 and the disc-shaped auxiliary housing 22; a motor trigger switch 21 is arranged at the axis center of the disc-shaped auxiliary housing 22.

[0033] The motor trigger switch 21 includes a central cylinder 31 integrated with the axis of the disc-shaped sub-shell 22, and the lower end of the longitudinal pressure transmission tube 6 is provided with an elastic sealing outer edge 20, and the inner wall of the upper end of the central cylinder 31 rotates with the outer ring of the elastic sealing outer edge 20; the inner wall of the central cylinder 31 is fixedly provided with an electrode fixing disk 27, and the axis of the electrode fixing disk 27 is provided with a through hole 29, and the lower end of the longitudinal pressure transmission tube 6 is connected to the bottom of the electrode fixing disk 27 through the through hole 29; the lower side of the electrode fixing disk 27 is provided with a first switch electrode 30 and a second switch electrode 28, and the lower ends of the first switch electrode 30 and the second switch electrode 28 are electrically connected to the first spring contact 32 and the second spring contact 25 respectively; the bottom of the electrode fixing disk 27 A metal disk 33 is coaxially arranged, and the lower side of the metal disk 33 is connected to the bottom wall of the disc-shaped sub-shell 22 through a coaxial tension spring 24; it also includes a conical ring-shaped flexible diaphragm 26 that is thin at the bottom and thick at the top. The conical ring-shaped flexible diaphragm 26 is an airtight flexible diaphragm structure, such as a polytetrafluoroethylene (PTFE) diaphragm. The lower end contour of the conical ring-shaped flexible diaphragm 26 is sealed and fixedly connected to the outer contour of the metal disk 33, and the upper end outer contour of the conical ring-shaped flexible diaphragm 26 is sealed and fixedly connected to the inner wall of the central cylinder 31; in the initial state, the tension spring 24 applies a downward pulling force to the metal disk 33, so that the conical ring-shaped flexible diaphragm 26 is in a taut state; the lower end of the central cylinder 31 is connected to the external atmospheric pressure environment through the air pressure balance hole 23.

[0034] When a sufficiently strong negative pressure is formed above the metal disk 33 (when the wearer subconsciously inhales forcefully and the air inlet group a 18.1 is blocked), the metal disk 33 overcomes the tension of the tension spring 24 under the action of the upper and lower pressure differences and moves upward, so that the metal disk 33 electrically connects the first spring contact 32 and the second spring contact 25; when the first spring contact 32 is electrically connected to the second spring contact 25, the metal disk 33, the first spring contact 32, the second spring contact 25, the motor 13 and the battery form a closed series circuit.

[0035] The continuous working principle of the activated carbon filter 10 in a high dust concentration environment;

[0036] Assume that in the initial state, Figure 5 and 6 As shown, a fan-shaped activated carbon bin 2 connected to the air distribution bin 4 through the filtered air outlet hole group 19 at the location is recorded as a fan-shaped activated carbon bin 2.1, and the other fan-shaped activated carbon bins 2 are all in a dormant state; the air inlet hole group 18 connected to the a fan-shaped activated carbon bin 2.1 is recorded as a air inlet hole group 18.1, and the other air inlet hole groups 18 are all in a dormant state; in the initial state, the first spring contact 32 and the second spring contact 25 are in an electrically disconnected state;

[0037] When the wearer inhales, the external air enters the a-shaped activated carbon bin 2.1 through the a-inlet hole group 18.1 under the action of the negative pressure generated by the inhalation, and then the air entering the a-shaped activated carbon bin 2.1 is fully filtered by the activated carbon particles and reaches the air distribution bin 4 through the filtered air outlet hole group 19, and then the filtered air in the air distribution bin 4 is inhaled into the inner side of the mouth and nose breathing mask 39 through the transverse air guide pipe 15, the air port 5 and the inhalation pipe 37, and finally inhaled into the human lungs; because the a-inlet hole group 18.1 is in a smooth state in the initial state, the wearer inhales smoothly, so the negative pressure generated by the wearer's smooth inhalation process is transmitted to the upper part of the metal plate 33 through the longitudinal pressure transmission pipe 6, and the negative pressure strength is not enough to cause the metal plate 33 to move upward to contact the first spring contact 32 and the second spring contact 25;

[0038] If the wearer is in an environment with high dust concentration, as time goes by, the a air inlet group 18.1 will gradually accumulate dust and be gradually blocked during the continuous inhalation process. Since the other air inlet groups 18 in the dormant state do not have an inhalation process, the air inlet groups 18 other than the a air inlet group 18.1 will not be gradually blocked. The gas permeability of the a air inlet group 18.1 will gradually weaken, so that the wearer will obviously feel that the inhalation process is more strenuous than the initial state. At this time, the wearer will subconsciously inhale hard. When the a air inlet group 18.1 is blocked, the hard inhalation will cause the sufficiently large negative pressure generated by the inhalation to be transmitted to the top of the metal plate 33 through the longitudinal pressure transmission pipe 6. Under the action of sufficient upper and lower pressure differences, the metal plate 33 overcomes the tension of the tension spring 24 and moves upward, so that the metal plate 33 electrically connects the first spring contact 32 and the second spring contact 25; after the first spring contact 32 and the second spring contact 25 are electrically connected, as shown in Figure 8 , the motor 13 is automatically powered on, and then the adjusting gear 14 drives the rotating ring wall 11 to rotate along the axis, so that the gas distribution bin 4 in the gas distribution box 16 follows the rotating ring wall 11 to rotate along the axis, so that the gas distribution bin 4 gradually deviates from the a-fan-shaped activated carbon bin 2.1, and connects to another group of new fan-shaped activated carbon bins 2 adjacent to the a-fan-shaped activated carbon bin 2.1, so that the original a-fan-shaped activated carbon bin 2.1 and a-air inlet group 18.1 enter a dormant state, and the other group of fan-shaped activated carbon bins 2 and air inlet group 18 are switched to the new a-fan-shaped activated carbon bin 2.1 and a-air inlet group 18.1, and the new a air inlet group 18.1 is in a smooth state, and the a fan-shaped activated carbon bin 2.1 is new activated carbon, so that the wearer's inhalation process is restored to a normal state, and the wearer's inhalation process is restored to a smooth state. At this time, the negative pressure generated by the wearer's smooth inhalation process is transmitted to the metal plate 33 through the longitudinal pressure transmission pipe 6. The negative pressure strength is significantly weakened, and the metal plate 33 automatically moves downward to separate from the first spring contact 32 and the second spring contact 25, and the motor 13 is automatically powered off; at this time, it returns to the initial state and waits for the next automatic switching process;

[0039] At this time, the new fan-shaped activated carbon bin 2 participates in the filtering process, thereby achieving smooth breathing for the wearer in a high-dust environment and continuous reliable filtering efficiency.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An emergency rescue head-mounted device integrating breathing and head protection, characterized in that: An integrated head-mounted device consisting of a helmet, a mask and an oronasal respirator, wherein the oronasal respirator is located inside the mask. When the mask seals the wearer's face, the oronasal respirator just seals the wearer's mouth and nose. The helmet and the mask are connected by a plurality of straps. The mask is fixedly provided with an inhalation tube and an exhalation tube, the inner ends of which are connected to the inner side of the mouth and nose breathing mask; the outer end of the exhalation tube is connected to the outside; the outer end of the inhalation tube is provided with an external thread, so that the outer end of the inhalation tube can be detachably connected to the activated carbon filter; One-way valves are provided in both the inhalation tube and the exhalation tube; the one-way valve in the inhalation tube prevents the gas inside the mouth and nose breathing mask from being discharged through the inhalation tube; the one-way valve in the exhalation tube prevents the external air from being inhaled into the mouth and nose breathing mask through the exhalation tube; The activated carbon filter comprises a disc-shaped main shell, an internal threaded barrel is coaxially integrated on the inner side of the connecting end of the disc-shaped main shell, the inner wall of the internal threaded barrel has internal threads, and the external threads of the outer end of the air intake pipe are sleeved with the internal threads of the internal threaded barrel; a disc-shaped auxiliary shell is coaxially integrated on the end of the disc-shaped main shell away from the internal threaded barrel; an inner ring wall is coaxially integrated inside the disc-shaped main shell; a plurality of separators along the radial direction are arranged in a circular array between the inner ring wall and the outer peripheral wall of the disc-shaped main shell, and the plurality of separators divide the annular cavity between the inner ring wall and the outer peripheral wall of the disc-shaped main shell into a plurality of fan-shaped activated carbon bins distributed in a circular array, and each fan-shaped activated carbon bin is filled with activated carbon particles; a plurality of hollow air inlet hole groups are distributed in a circular array on the outer peripheral wall of the disc-shaped main shell, and a plurality of hollow filtered air outlet hole groups are distributed in a circular array on the inner ring wall; a rotary air distribution device is coaxially arranged on the inner side of the inner ring wall; The rotary gas distribution device comprises a cylindrical rotary ring wall, wherein the inner wall at the upper end of the rotary ring wall and the outer wall of the inner threaded cylinder are rotatably matched through a bearing; a rotary disk is coaxially integrated in the middle of the inner side of the rotary ring wall, an air port is arranged at the axis of the rotary disk, a transverse air guide pipe and a longitudinal pressure transmission pipe are vertically connected below the rotary disk, and the connecting part of the transverse air guide pipe and the longitudinal pressure transmission pipe is connected to the air port together; an air distribution box is integrated on the outer wall of the rotary ring wall, and one end of the air distribution box away from the axis of the rotary ring wall is connected to the The inner arc surface of the inner ring wall slides and fits together, and the air distribution box contains an air distribution bin which is open on the side away from the axis of the rotating ring wall, and the air extraction end of the transverse air duct is connected to the air distribution bin through the connecting hole on the rotating ring wall; during the rotation of the air distribution box with the rotating ring wall, the air distribution bin in the air distribution box is successively connected to each filtered air outlet hole group distributed in a circular array on the inner ring wall; a fan-shaped activated carbon bin connected to the air distribution bin through the filtered air outlet hole group at its location is recorded as a fan-shaped activated carbon bin.

2. The emergency rescue head-mounted device integrating breathing and head protection according to claim 1, characterized in that: The front side of the mask is an observation window, and a transparent front cover is sealed on the observation window.

3. The emergency rescue head-mounted device integrating breathing and head protection according to claim 1, characterized in that: The upper end of the mask is connected to the front of the helmet through a first strap; the middle edge of the mask is connected to the middle edge of the helmet through a pair of second straps; the lower edge of the mask is connected to the rear edge of the helmet through a pair of third straps, and the first strap, the second strap and the third strap can all be adjusted in tightness.

4. The emergency rescue head-mounted device integrating breathing and head protection according to claim 3, characterized in that: A circle of transmission gears is arranged on the inner wall at the lower end of the rotating ring wall; a battery and a motor are installed in the disc-shaped auxiliary shell, and an adjusting gear is driven and connected to the output end of the motor, and the adjusting gear is meshed with the transmission gears; a partition wall is formed between the disc-shaped main shell and the disc-shaped auxiliary shell; a motor trigger switch is arranged at the axis center of the disc-shaped auxiliary shell.

5. The emergency rescue head-mounted device integrating breathing and head protection according to claim 4, characterized in that: The motor trigger switch includes a central cylinder integrated with the axis of the disc-shaped auxiliary housing, the lower end of the longitudinal pressure transmission tube has an elastic sealing outer edge, and the inner wall of the upper end of the central cylinder rotates with the outer ring of the elastic sealing outer edge; an electrode fixing disk is fixedly arranged on the inner wall of the central cylinder, and a through hole is arranged at the axis of the electrode fixing disk, and the lower end of the longitudinal pressure transmission tube is connected to the bottom of the electrode fixing disk through the through hole; a first switch electrode and a second switch electrode are arranged on the lower side of the electrode fixing disk, and the lower ends of the first switch electrode and the second switch electrode are electrically connected to the first spring contact and the second spring contact respectively; a metal disk is arranged below the electrode fixing disk, and the lower side of the metal disk is connected to the bottom wall of the disc-shaped auxiliary housing through a tension spring; and also includes a lower A conical ring-shaped flexible diaphragm is thin at the top and thick at the bottom, and the lower end contour of the conical ring-shaped flexible diaphragm is sealed and fixedly connected to the outer contour of the metal disk, and the upper end outer contour is sealed and fixedly connected to the inner wall of the central cylinder; the tension spring applies a downward tension to the metal disk to tighten the conical ring-shaped flexible diaphragm; the central cylinder is connected to the outside through an air pressure balance hole; when a sufficiently strong negative pressure is formed above the metal disk, the metal disk overcomes the upward displacement of the tension spring under the action of the upper and lower pressure differences, so that the metal disk electrically connects the first spring contact and the second spring contact; when the first spring contact is electrically connected to the second spring contact, the metal disk, the first spring contact, the second spring contact, the motor and the battery form a closed series circuit.

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