Breathing and head protection integrated emergency rescue head-mounted appliance

Abstract

A breathing and head protection integrated emergency rescue head-mounted appliance, which is an integrated head-mounted appliance formed by a helmet, a mask, and a mouth and nose breathing mask. The mouth and nose breathing mask covers the inner side of the mask. When the mask seals and covers the face of a wearer, the mouth and nose breathing cover seals and covers the mouth and nose of the wearer. The helmet is connected to the mask by means of a plurality of straps. The helmet and the mask of the emergency rescue head-mounted appliance are more stable in an interlocking wearing state, and are not prone to falling off, such that the sealing performance is improved, and the appliance is suitable for emergency rescue wearing protection in severe environments.

Description

An emergency rescue headgear integrating breathing and head protection Technical Field

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

[0002] In emergency rescue situations, the gas mask and helmet 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. The wearer will have irreversible difficulty breathing over time during the operation, which will prompt the wearer to take off the gas mask without authorization; thereby affecting the sustainability of the activated carbon filter. Technical issues

[0004] In order to overcome the shortcomings of the existing technology, 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. At the same time, the activated carbon filter device is more effective and sustainable in high-concentration dust environments. Technical Solutions

[0005] To achieve the above-mentioned purpose, the present invention provides an emergency rescue head-mounted device that integrates 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 inside 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 provided on the mask, the inner ends of which are connected to the inside of the mouth and nose breathing mask; the outer end of the exhalation tube is connected to the outside world; 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 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 engaged 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 ring wall is coaxially integrated inside the disc-shaped main shell; a plurality of radial dividing plates 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 dividing plates 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.

[0011] Furthermore, the rotary air distribution device includes a cylindrical rotary ring wall, and the inner wall of 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 with the inner middle part of the rotary ring wall, an air port is provided at the axis of the rotary disk, and a vertically connected transverse air guide pipe and a longitudinal pressure transmission pipe are provided 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; an air distribution box is integrated with the outer wall of the rotary ring wall, and the air distribution box is away from the axis of the rotary ring wall. The end slides in contact with the inner arc surface of the inner ring wall. Inside the air distribution box is an air distribution bin which is open on the side away from the axis of the rotating ring wall. 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 the filtered air outlet hole groups 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 of 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 engaged with the transmission teeth; a partition wall is formed between the disc-shaped main shell and the disc-shaped sub-shell; 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 to the first spring contact and the second spring contact respectively; A coaxial tension spring is connected to the bottom wall of the disc-shaped auxiliary housing; the housing also includes a tapered annular flexible diaphragm that is thinner at the bottom and thicker 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 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 force to the metal disk, thereby tightening the tapered annular flexible diaphragm. The lower end of the central cylinder is connected to the external atmospheric pressure environment through an 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 due to the pressure difference between the upper and lower parts and moves upward, causing the metal disk to electrically connect 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. Beneficial effects

[0015] When the present invention is worn, 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 generate a sufficiently large negative pressure, and the metal disk will overcome the tension of the tension spring and move upward, causing the metal disk to 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, thereby causing the original a fan-shaped activated carbon bin and a air inlet group to 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 contains new activated carbon, thereby restoring the wearer's inhalation process to normal, and the wearer's inhalation process becomes smooth, achieving smooth breathing for the wearer in a high dust environment and continuous reliable filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall first perspective of this solution;

[0018] Figure 2 is a schematic diagram of the overall second viewing angle of this solution;

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

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

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

[0022] Figure 6 is a cross-sectional view of Figure 5;

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

[0024] Figure 8 is a schematic diagram of a circuit consisting of a battery, a motor and two spring contacts. Modes for Carrying Out the Invention

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

[0026] As shown in Figures 1 to 8, an emergency rescue head-mounted device with integrated breathing and head protection includes 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 wearer's face, the oronasal breathing mask 39 just seals the wearer's mouth and nose; 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 and the mask 38 are connected by a number of straps; As shown in Figures 1 and 2, 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. 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 provided on the mask 38, and the inner ends of the inhalation tube 37 and the exhalation tube 35 are connected to the inside of the oral and nasal 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, an oxygen supplier or a compressed air supplier. In this case, the outer end of the inhalation tube 37 is detachably connected to the activated carbon filter 10, as shown in Figures 3 and 4; a one-way valve is provided in each of the inhalation tube 37 and the exhalation tube 35; the one-way valve in the inhalation tube 37 prevents the gas inside the oral and nasal breathing mask 39 from being discharged through the inhalation tube 37; the one-way valve in the exhalation tube 35 prevents external air from being inhaled into the oral and nasal breathing mask 39 through the exhalation tube 35; the working principle when the outer end of the inhalation tube 37 is connected to the activated carbon filter 10 is as follows:

[0028] After wearing, the helmet 46 is tightly fastened to 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, thereby protecting 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 the 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 oronasal respirator 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 oronasal respirator 39 under the action of inhalation, and the one-way valve in the inhalation tube 35 prevents the outside air from being inhaled into the inside of the oronasal respirator 39 through the inhalation tube 35; at the same time, the outside 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 oronasal respirator 39 through the inhalation tube 37, and finally inhaled into the human lungs.

[0029] If a conventional activated carbon filter 10 is used, the following problem will occur: when a person wears the activated carbon filter in an environment with high dust concentration, all the air inlet groups on the activated carbon filter device will gradually accumulate dust and become blocked during the continuous inhalation process within a short period of time. The wearer will experience irreversible breathing difficulty over time during the operation, which may prompt the wearer to remove the gas mask without authorization, thereby causing the risk of inhaling large amounts of dust and toxic gases. The activated carbon filter 10 of this solution can solve the above problem, as follows:

[0030] Thus, the sustainability of the activated carbon filter device is affected. When the outer end of the suction pipe 37 is detachably connected to the activated carbon filter 10 adapted to a 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 a high-concentration dust environment):

[0031] The activated carbon filter 10 includes a disc-shaped main shell 1, an internal threaded barrel 8 is coaxially integrated on the inner side of the connecting end of the disc-shaped main shell 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 intake pipe 37 is threadedly sleeved with the internal thread 3 of the internal threaded barrel 8; a disc-shaped sub-shell 22 is coaxially integrated on the end of the disc-shaped main shell 1 away from the internal threaded barrel 8. As shown in Figures 4 and 5: an inner annular wall 17 is coaxially integrated inside the disc-shaped main shell 1; a plurality of radial separators 34 are arranged in a circumferential array between the inner annular wall 17 and the outer circumferential wall of the disc-shaped main shell 1, and the plurality of separators 34 divide the annular cavity between the inner annular wall 17 and the outer circumferential wall of the disc-shaped main shell 1 into a plurality of fan-shaped activated carbon bins 2 distributed in a circumferential array, and each fan-shaped activated carbon bin 2 is filled with activated carbon particles; the outer side of the disc-shaped main shell 1 The peripheral wall is provided with a plurality of hollow air inlet holes 18 in a circumferential array, and the inner ring wall 17 is provided with a plurality of hollow filtered air outlet holes 19 in a circumferential array; a rotary air distribution device 50 is provided coaxially 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 is rotatably matched with the outer wall of the internal threaded cylinder 8 through a bearing 7; a rotary air distribution device 50 is provided coaxially on the inner middle part of the rotary ring wall 11. The rotary disk 9 is provided with an air port 5 at the axis thereof, and a transverse air guide pipe 15 and a longitudinal pressure transmission pipe 6 are provided below the rotary 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; the outer wall of the rotary ring wall 11 is provided with an integrated air distribution box 16, and the end of the air distribution box 16 away from the axis of the rotary ring wall 11 is slidably fitted with the inner arc surface of the inner ring wall 17, and the inside of the air distribution box 16 is open on the side away from the axis of the rotary ring wall 11. The air distribution bin 4, the air extraction end of the transverse air guide pipe 15 is connected to the air distribution bin 4 through the connecting hole 33 on the rotating ring wall 11; during the rotation of the air distribution box 16 along with the rotating 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 circumferential 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 teeth 32 is provided on the inner wall of 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 the output end of the motor 13 is driven and connected to the adjustment gear 14, which is engaged with the transmission teeth 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 provided at the axis center of the disc-shaped auxiliary housing 22.

[0033] The motor trigger switch 21 includes a central cylinder 31 integrated into the axis of the disc-shaped sub-housing 22, 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 a through hole 29 is provided at the axis of the electrode fixing disk 27. 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-housing 22 via a coaxial tension spring 24; it also includes a conical annular flexible diaphragm 26 that is thinner at the bottom and thicker at the top. The conical annular flexible diaphragm 26 is an airtight flexible diaphragm structure, such as a polytetrafluoroethylene (PTFE) diaphragm. The lower end contour of the conical annular 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 annular 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, thereby making the conical annular flexible diaphragm 26 taut; 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 forms 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 due to the pressure difference between the upper and lower parts and moves upward, causing the metal disk 33 to electrically connect 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 concentration dust environment;

[0036] Assume that in the initial state, as shown in Figures 5 and 6, one sector-shaped activated carbon bin 2 connected to the air distribution bin 4 via the filtered air outlet hole group 19 at its location is denoted as sector-shaped activated carbon bin a 2.1, and the remaining sector-shaped activated carbon bins 2 are all in a dormant state; the air inlet hole group 18 connected to sector-shaped activated carbon bin a 2.1 is denoted as air inlet hole group a 18.1, and the remaining 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 fan-shaped activated carbon bin 2.1 through the air inlet group a 18.1 under the action of the negative pressure generated by the inhalation. The air entering the fan-shaped activated carbon bin 2.1 is then fully filtered by the activated carbon particles and reaches the air distribution bin 4 through the filtered air outlet group 19. The filtered air in the air distribution bin 4 is then inhaled into the inner side of the oronasal breathing mask 39 through the transverse air guide tube 15, the air port 5 and the inhalation tube 37, and finally inhaled into the human lungs. Since the air inlet group a 18.1 is in an unobstructed state in the initial state, the wearer can inhale smoothly. Therefore, the negative pressure generated by the wearer's smooth inhalation process is transmitted to the upper part of the metal disk 33 through the longitudinal pressure transmission tube 6. The negative pressure strength is not enough to cause the metal disk 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, over time, the air inlet group a 18.1 will gradually accumulate dust during the continuous inhalation process and gradually become blocked. 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 air inlet group a 18.1 will not be gradually blocked. The air permeability of the air inlet group a 18.1 will gradually weaken, making the wearer feel that the inhalation process is more difficult than the initial state. At this time, the wearer will subconsciously inhale hard. In the case where the air inlet group a 18.1 is blocked, inhaling forcefully will cause the sufficiently large negative pressure generated by the inhalation to be transmitted to the upper part of the metal disk 33 through the longitudinal pressure transmission tube 6. Under the action of a sufficient pressure difference between the upper and lower parts, the metal disk 33 overcomes the tension of the tension spring 24 and moves upward, so that the metal disk 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 energized, thereby causing the adjustment gear 14 to drive the rotating ring wall 11 The air distribution chamber 4 in the air distribution box 16 rotates along the axis, following the rotating ring wall 11, so that the air distribution chamber 4 gradually deviates from the a-sector activated carbon chamber 2.1 and connects to another new group of sector-shaped activated carbon chambers 2 adjacent to the a-sector activated carbon chamber 2.1, so that the original a-sector activated carbon chamber 2.1 and the a-air inlet group 18.1 enter a dormant state, and the other group of sector-shaped activated carbon chambers 2 and the air inlet group 18 are switched to the new a-sector activated carbon chamber 2.1 and the a-air inlet group 18.1, and the new a-sector activated carbon chamber 2.1 and the a-sector activated carbon chamber 2.1 enter a dormant state. Group 18.1 is unobstructed, and fan-shaped activated carbon bin a 2.1 contains new activated carbon, allowing the wearer's inhalation process to return to normal. The wearer's inhalation process becomes smooth again. At this time, the negative pressure generated by the wearer's smooth inhalation process is transmitted to the metal disk 33 via the longitudinal pressure transmission tube 6, and the negative pressure intensity is significantly weakened. The metal disk 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 point, the wearer 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 principles 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 comprising a helmet (46), a face mask (38) and an oronasal breathing mask (39), wherein the oronasal breathing mask (39) is located on the inner side of the face mask (38), and when the face mask (38) seals the face of a wearer, the oronasal breathing mask (39) just seals the mouth and nose of the wearer; the helmet (46) and the face mask (38) are connected by a plurality of straps.

2. The emergency rescue head-mounted device integrating breathing and head protection according to claim 1, characterized in that: The front side of the face mask (38) is an observation window (41), and a transparent front cover (40) is sealed on the observation window (41).

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 (38) is connected to the front of the helmet (46) via a first strap (42); the middle edge of the mask (38) is connected to the middle edge of the helmet (46) via a pair of second straps (43); the lower edge of the mask (38) is connected to the rear edge of the helmet (46) via a pair of third straps (44); the first strap (42), the second strap (43) and the third strap (44) are all capable of adjusting tightness.

4. The emergency rescue head-mounted device integrating breathing and head protection according to claim 1, characterized in that: 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 both connected to the inner side of the oral and nasal 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 an activated carbon filter (10), an oxygen supplier or a compressed air supplier.

5. The emergency rescue head-mounted device integrating breathing and head protection according to claim 4, characterized in that: Both the inhalation pipe (37) and the exhalation pipe (35) are provided with one-way valves; the one-way valve in the inhalation pipe (37) prevents the gas inside the oral and nasal breathing mask (39) from being discharged through the inhalation pipe (37); and the one-way valve in the exhalation pipe (35) prevents the external air from being inhaled into the oral and nasal breathing mask (39) through the exhalation pipe (35).

6. The emergency rescue head-mounted device integrating breathing and head protection according to claim 5, characterized in that: The activated carbon filter (10) comprises a disc-shaped main shell (1), an internal threaded barrel (8) is coaxially integrated on the inner side of the connection end of the disc-shaped main shell (1), the inner wall of the internal threaded barrel (8) has an internal thread (3), 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 shell (22) is coaxially integrated on one end of the disc-shaped main shell (1) away from the internal threaded barrel (8); an inner annular wall (17) is coaxially integrated inside the disc-shaped main shell (1); and a space between the inner annular wall (17) and the outer peripheral wall of the disc-shaped main shell (1) is formed. A plurality of radially spaced partitions (34) are arranged in a circumferential array, the plurality of spaced partitions (34) dividing the annular cavity between the inner annular wall (17) and the outer circumferential wall of the disc-shaped main shell (1) into a plurality of fan-shaped activated carbon bins (2) arranged in a circumferential array, each fan-shaped activated carbon bin (2) being filled with activated carbon particles; a plurality of hollow air inlet hole groups (18) are arranged in a circumferential array on the outer circumferential wall of the disc-shaped main shell (1), and a plurality of hollow filtered air outlet hole groups (19) are arranged in a circumferential array on the inner annular wall (17); and a rotary air distribution device (50) is arranged coaxially on the inner side of the inner annular wall (17).

7. The emergency rescue head-mounted device integrating breathing and head protection according to claim 6, characterized in that: The rotary gas distribution device (50) comprises a cylindrical rotary ring wall (11), wherein the inner wall at the upper end of the rotary ring wall (11) and the outer wall of the internally threaded cylinder (8) are rotatably matched via a bearing (7); a rotary disk (9) is coaxially integrated in the middle of the inner side of the rotary ring wall (11), an air port (5) is arranged at the axis of the rotary disk (9), a transverse air guide pipe (15) and a longitudinal pressure transmission pipe (6) are vertically connected below the rotary disk (9), and the connecting point 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 arranged on the outer wall of the rotary ring wall (11), and one end of the air distribution box (16) away from the axis of the rotary ring wall (11) is connected to the rotary ring wall (11). The inner arc surface of the inner ring wall (17) is slidably fitted, and the air distribution box (16) contains an air distribution chamber (4) which is open on one side away from the axis of the rotating ring wall (11), and the air extraction end of the transverse air guide pipe (15) is connected to the air distribution chamber (4) through the connecting hole (33) on the rotating ring wall (11); when the air distribution box (16) rotates with the rotating ring wall (11), the air distribution chamber (4) in the air distribution box (16) is successively connected to each of the filtered air outlet hole groups (19) distributed in a circumferential array on the inner ring wall (17); a fan-shaped activated carbon chamber (2) connected to the air distribution chamber (4) through the filtered air outlet hole group (19) at the location is recorded as a fan-shaped activated carbon chamber (2.1).

8. The emergency rescue head-mounted device integrating breathing and head protection according to claim 7, characterized in that: A circle of transmission teeth (32) is arranged on the inner wall of the lower end of the rotating ring wall (11); a battery and a motor (13) are installed in the disc-shaped auxiliary housing (22); an output end of the motor (13) is drivingly connected to an adjustment gear (14), and the adjustment gear (14) is meshed with the transmission teeth (32); a partition wall (12) is formed between the disc-shaped main housing (1) and the disc-shaped auxiliary housing (22); and a motor trigger switch (21) is arranged at the axis of the disc-shaped auxiliary housing (22).

9. The emergency rescue head-mounted device integrating breathing and head protection according to claim 8, characterized in that: The motor trigger switch (21) comprises a central cylinder (31) integrated with the axis of a disc-shaped auxiliary housing (22); the lower end of a longitudinal pressure transmission tube (6) has an elastic sealing outer edge (20); the inner wall of the upper end of the central cylinder (31) is rotatably matched with the outer ring of the elastic sealing outer edge (20); an electrode fixing disk (27) is fixedly arranged on the inner wall of the central cylinder (31); a through hole (29) is arranged at the axis of the electrode fixing disk (27); the lower end of the longitudinal pressure transmission tube (6) is connected to the lower part of the electrode fixing disk (27) through the through hole (29); a first switch electrode (30) and a second switch electrode (28) are arranged on the lower side of the electrode fixing disk (27); 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; a metal disk (33) is arranged below the electrode fixing disk (27); the lower side of the metal disk (33) is connected to the disc-shaped auxiliary housing (22) through a tension spring (24). 2) bottom wall; also comprising a conical annular flexible diaphragm (26) which is thin at the bottom and thick at the top, the lower end contour of the conical annular flexible diaphragm (26) being sealed and fixedly connected to the outer contour of the metal disk (33), and the upper end outer contour being sealed and fixedly connected to the inner wall of the central cylinder (31); the tension spring (24) exerts a downward tension on the metal disk (33) to tighten the conical annular flexible diaphragm (26); the central cylinder (31) is connected to the outside through the air pressure balance hole (23); when a sufficiently strong negative pressure is formed above the metal disk (33), the metal disk (33) overcomes the tension spring (24) under the action of the upper and lower pressure difference 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) and the second spring contact (25) are electrically connected, 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.

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