CN212067494U - Respirator mouth nose cup of saving oneself - Google Patents
Respirator mouth nose cup of saving oneself Download PDFInfo
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- CN212067494U CN212067494U CN202020143351.9U CN202020143351U CN212067494U CN 212067494 U CN212067494 U CN 212067494U CN 202020143351 U CN202020143351 U CN 202020143351U CN 212067494 U CN212067494 U CN 212067494U
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- oronasal mask
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Abstract
The utility model relates to a respirator oronasal mask saves oneself belongs to conflagration first aid technical field, has solved the inconvenient wearing of current oronasal mask, and can not realize the problem of quick change with the respiratory device of saving oneself. The utility model discloses an oronasal mask, which comprises a supporting part, a connecting part, a sealing part and a headgear; the supporting part is connected with the connecting part, the sealing part is sleeved outside the connecting part, and the head sleeve is connected with the connecting part; the supporting part is used for supporting connecting portion, and connecting portion are used for connecting supporting part and sealing, and the sealing is used for laminating facial, and the headgear is used for wearing of oronasal mask and can adjust the laminating degree of sealing and facial. The utility model discloses an oronasal mask through the connecting pipe that sets up the standard structure, realizes oronasal mask and respirator's quick change of saving oneself, adjusts the elasticity of headgear through the cooperation of the type groove of falling U and compact heap, makes oronasal mask under the prerequisite of guaranteeing the leakproofness, wears comfortable, firm.
Description
Technical Field
The utility model relates to a conflagration device technical field of saving oneself especially relates to a respirator of saving oneself oronasal mask.
Background
When a fire-fighting fire accident occurs, the trapped people in the scene can adopt a wet towel to cover the mouth and the nose or adopt self-rescue measures such as wearing a filtering type breathing mask or a compressed gas cylinder breathing device and the like, and can also adopt means such as wearing a chemical oxygen breathing device to carry out scene evacuation and escape self-rescue. However, the oxygen content in the air after violent combustion is low, toxic and harmful components in smoke are very complex, the wet towel and the filtering type breathing mask can only filter a few specific toxic gases, the expected filtering and purifying effect is difficult to achieve, the compressed air bottle type breathing device is not suitable for the environment with the oxygen concentration lower than 17%, the life safety of escape personnel is difficult to guarantee practically, and dangerous accidents such as explosion are easy to generate because the compressed air bottle type breathing device belongs to a high-pressure container. Therefore, the chemical oxygen breathing device is ideal breathing protection rescue equipment in the operation scenes of fire fighting, chemical engineering, coal mines, closed spaces and the like at present. The oxygen-saving breathing device is based on KO2Air regenerant and CO as main components2、H2The device is developed by taking the principle that fresh air for breathing is generated by the O reaction, is not limited by the gas components of the surrounding atmosphere environment in use, and is an ideal emergency escape self-rescuer.
However, the conventional oral-nasal mask of the self-rescue breathing device adopts a simple elastic band head sleeving mode, which can ensure the wearing speed but cannot ensure the attachment with the face, so that air leakage is easily caused; or a fastening mode with multi-point positioning is adopted, although the tightness can be ensured, the headgear structure is complex, the wearing operation is complex, long time is needed, and the optimal escape time is easily missed. Meanwhile, the oral-nasal mask with the two modes can not realize quick replacement with a self-rescue breathing device.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned analysis, the utility model aims at providing a respirator oronasal mask saves oneself for solve the inconvenient problem of wearing of current oronasal mask, and can not realize the quick change with the respiratory device of saving oneself.
The purpose of the utility model is mainly realized through the following technical scheme:
a mouth-nose mask of a self-rescue respirator comprises a supporting part, a connecting part, a sealing part and a headgear; the supporting part is connected with the connecting part, the sealing part is sleeved outside the connecting part, and the head sleeve is connected with the connecting part; the supporting part is used for supporting connecting portion, and connecting portion are used for connecting supporting part and sealing, and the sealing is used for laminating facial, and the headgear is used for wearing of oronasal mask and can adjust the laminating degree of sealing and facial.
Furthermore, the connecting part is a concave shell, and is provided with a connecting pipe which is arranged on the convex side of the connecting part;
the outer cylindrical surface of the connecting pipe is provided with a boss which is umbrella-shaped, and the umbrella-shaped opening faces the connecting part.
Further, a through hole is formed in the middle of the supporting portion.
Further, the diameter of the through hole is larger than that of the boss.
Further, the connecting part is provided with a clamping seat, and the clamping seat is in adaptive connection with a clamping groove formed in the inner side of the supporting part.
Further, the top surface of the connecting part is matched with the inner shape of the supporting part; the edge face of the connecting part is matched and sealed with the inner shape of the sealing part.
Furthermore, the headgear has elasticity, and the front end of headgear is provided with the mounting hole, and the diameter of mounting hole is less than the diameter of connecting pipe, the headgear passes through the mounting hole and is connected with the connecting pipe.
Further, an inverted U-shaped groove is formed in the lower edge of the rear end of the head sleeve; the lower edge of the head cover is also provided with a reinforcing layer.
Furthermore, the mouth-nose mask of the self-rescue respirator also comprises a pressing block, the headgear is also provided with an adjusting rope, one end of the adjusting rope penetrates through the pressing block to be connected with the reinforcing layer, and the other end of the adjusting rope is provided with an anti-falling block;
the compressing block and the fit of the inverted U-shaped groove can adjust the tightness of the head sleeve.
Further, supporting part and connecting portion are the plastics material, the sealing is the silica gel material, the inboard profile and the facial looks adaptation of sealing.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
(1) the connecting part of the mouth-nose mask is provided with the connecting pipe, the outer cylindrical surface of the connecting pipe is provided with the boss, the boss is in an umbrella shape, the umbrella-shaped opening faces the side of the connecting part, and the connecting pipe can be quickly assembled and disassembled with a quick connector of a breathing pipe, is simple and convenient to operate and is convenient to replace;
(2) the headgear of the oronasal mask has elasticity, and is directly worn on the head when in use, thereby being convenient and fast;
(3) the front end of the headgear is provided with a hole, the diameter of the hole is smaller than that of the connecting pipe, the hole is elastically fixed on the connecting pipe through the headgear and is tightly pressed through the supporting part, so that the headgear is firmly fixed, and the stability of the oronasal mask in the wearing process is ensured;
(4) the lower edge of the rear end of the headgear is provided with the inverted U-shaped groove, so that the opening degree of the inverted U-shaped groove can be adjusted according to the size of the head of a user in the wearing process of the headgear, and the headgear is comfortable to wear on the premise of ensuring the seal of the oral-nasal mask and the face;
(5) the adjusting rope penetrates through the pressing block to be connected with the reinforcing layer, the opening degree of the inverted U-shaped groove can be changed by changing the distance between the pressing block and the connecting point of the adjusting rope and the reinforcing layer, and further the tightness of the headgear can be adjusted, so that the mouth-nose mask is ensured to be worn firmly, and the inverted U-shaped groove is matched with different head sizes, so that the wearing is comfortable, and the adjustment is convenient and quick;
(6) when the connecting part penetrates through the sealing part to be connected with the supporting part, the edge surface of the connecting part is matched and sealed with the inner shape of the sealing part, so that the sealing performance of the oronasal mask is ensured, a sealed gas passage is formed by the breathing device, and the safety in the using process is ensured.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
FIG. 1 is a schematic overall structure diagram of a self-rescue respirator oronasal mask with a first quick connector;
FIG. 2 is a schematic overall structure diagram of the self-rescue respirator oronasal mask with a first quick connector;
FIG. 3 is a schematic overall structure diagram of the self-rescue respirator oronasal mask with a first quick connector;
FIG. 4 is an exploded view of a self-rescue respirator oronasal mask removal headgear configuration;
FIG. 5 is a schematic overall structure diagram of a self-rescue respirator oronasal mask removal headgear;
FIG. 6 is a schematic diagram of the overall structure of the self-rescue breathing device;
FIG. 7 is an exploded view of the self-rescue breathing apparatus with the breathing tube removed;
fig. 8 is a schematic structural view of an oxygen generating module.
Reference numerals:
1-an oronasal mask; 11-a support; 111-a via; 112-weight reduction slots; 12-a connecting part; 121-connecting tube; 122-a boss; 123-card seat; 124-top surface; 125-edge face; 13-a seal; 14-headgear; 141-inverted U-shaped groove; 142-a reinforcing layer; 143-adjusting the rope; 144-an anti-drop block; 145-a compact; 2-a breathing tube; 21-a first quick connector; 3-an oxygen generating module; 31-an oxygen generating tank; 311-an air inlet pipe; 312-an air outlet pipe; 313-an oxygen generating tank body; 314-a connection tube; a 32-four-way unit; 321-a first channel; 322-a second channel; 323-a third channel; 324-a fourth channel; 325-second quick connector; 326-third quick connector; 327-fourth quick connector; 4-air bag.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of the invention, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
The utility model discloses a specific embodiment, as shown in figures 1-8, discloses a self-rescue respirator oronasal mask, the oronasal mask 1 can be used for the quick replacement of the oronasal mask of a chemical oxygen self-rescue breathing device; comprises a supporting part 11, a connecting part 12, a sealing part 13 and a head cover 14; the supporting part 11 is connected with the connecting part 12, the sealing part 13 is sleeved on the outer side of the connecting part 12, and the head sleeve 14 is connected with the connecting part 12; the support portion 11 is used for supporting the connecting portion 12, the connecting portion 12 is used for connecting the support portion 11 and the sealing portion 13, the sealing portion 13 is used for fitting the face, and the headgear 14 is used for wearing the oronasal mask 1 and adjusting the fitting degree of the sealing portion 13 and the face.
The whole appearance of the oronasal mask 1 is similar to a cone, the supporting part 11 is arranged at the outermost side of the oronasal mask 1, is made of plastic and plays a role in supporting and protecting the connecting part 12; a through hole 111 is provided in the middle of the support portion 11, and since the connection pipe 121 of the connection portion 12 needs to pass through the through hole 111 of the support portion 11, in order to avoid interference when the support portion 11 is assembled with the connection portion 12, the diameter of the through hole 111 is larger than that of the boss 122.
In order to reduce the weight of the oronasal mask 1, the support plate 11 is provided with a lightening groove 112, and the lightening groove 112 is designed along with the model, thereby not only playing a role of lightening, but also enabling the appearance of the support plate 11 to be beautiful.
In order to avoid the deformation of the connecting part 12 caused by the pulling force generated by the headgear 4 during wearing, the connecting part 12 is made of plastic, specifically, the connecting part 12 is a concave hard shell, the connecting part 12 is provided with a connecting pipe 121, and the connecting pipe 121 is arranged on the convex side of the connecting part 12; in order to facilitate the connection with the first quick connector 21 of the breathing tube 2 and realize the quick replacement of the oronasal mask 1, a boss 122 is arranged on the outer cylindrical surface of the connecting tube 121, the boss 122 is umbrella-shaped, and the umbrella-shaped opening faces the connecting portion 12.
In this embodiment, the connecting tube 121 is disposed on the connecting portion 12 of the oronasal mask 1, the umbrella-shaped boss 122 is disposed on the outer cylindrical surface of the connecting tube 121, and the umbrella-shaped opening faces the connecting portion 121, so that the oronasal mask 1 can be quickly assembled and disassembled with the first quick coupling 121 of the breathing tube 2, and the operation is simple and convenient, and the replacement is convenient.
In order to realize the connection between the connecting portion 12 and the supporting portion 11, the connecting portion 12 is provided with three clamping seats 123, specifically, the clamping seats 123 are arranged on the convex side of the connecting portion 12, one clamping seat 123 is arranged on the symmetrical surface of the connecting portion 12, the other two clamping seats are symmetrically arranged about the symmetrical surface of the connecting portion 12, and the clamping seats 123 are in adaptive connection with the clamping grooves arranged on the inner side of the supporting portion 11.
In this embodiment, the top surface 124 of the connecting portion 12 matches with the internal shape of the supporting portion 11, and when the connecting portion 12 passes through the sealing portion 13 and is connected to the supporting portion 11, that is, when the connecting portion is clamped to the clamping groove by the clamping seat 123, the edge surface 125 of the connecting portion 12 matches with the internal shape of the sealing portion 13 for sealing, so as to ensure the sealing performance of the oronasal mask 1, so that the breathing apparatus forms a sealed gas passage, and ensure the safety during use.
Considering the inconsistency of the facial contour, the sealing part 13 is made of silica gel, an inward flange is arranged at the joint position of the sealing part 13 and the face, and the inner side contour of the sealing part 13 is matched with the face by the oronasal mask 1 under the action of the headgear 14, so that the sealing effect is achieved.
The headgear 14 is made of elastic material, so that the headgear has elasticity, and can be worn on the head directly when the oronasal mask 1 is used, which is convenient and fast. It should be noted that, the width of the head cover 14 gradually increases from the connecting tube 121 to the back head, slots capable of allowing ears to pass through are disposed on both sides of the head cover, and the head cover 14 wraps the back head and does not exceed the top of the head, so as to tighten the head cover 14 and not obstruct the view.
In order to facilitate the connection between the head cover 14 and the connecting portion 12, the head cover 14 is provided with a mounting hole at the front end, the diameter of the mounting hole is smaller than the diameter of the connecting pipe 121, the head cover 14 is sleeved on the connecting pipe 121 through the mounting hole, and when the supporting portion 11 is clamped with the connecting portion 12, the head cover 14 is pressed between the supporting portion 11 and the connecting portion 12.
In this embodiment, the front end of the headgear 14 is provided with the mounting hole, the diameter of the mounting hole is smaller than the diameter of the connecting pipe 121, the headgear 14 is fixed on the connecting pipe 121 by the elasticity of the headgear 14, and the headgear 14 is tightly pressed against the connecting part 12 by the supporting part 11, so that the headgear 14 is fixed firmly, and the stability of the oronasal mask 1 in the wearing process is ensured.
Because user's head is not of uniform size, comfortable when just making to wear in order to increase headgear 14 application scope, the lower limb of 14 rear ends of headgear has seted up U-shaped groove 141, makes headgear 14 be wearing the in-process, and the size that U-shaped groove 141 opening degree of opening can be adjusted according to user's head, under the prerequisite of guaranteeing oronasal mask 1 and face seal, makes and wears comfortable.
Considering that the lower edge of the headgear 14 is stressed greatly and is easily damaged for a long time when the headgear 14 is worn in the using process of the oronasal mask 1, the reinforcing layer 142 is disposed on the lower edge of the headgear 14, and specifically, the reinforcing layer 142 is disposed on both the inner side and the outer side of the lower edge of the headgear 14. The width of the reinforcing layer 142 increases from the end of the seal portion 13 to the end of the inverted U-shaped groove 141, and the widest position of the reinforcing layer 142 is located at the edge of the inverted U-shaped groove 141, and the width is not more than half the length of the inverted U-shaped groove 141.
In this embodiment, the oronasal mask 1 further includes a pressing block 145, the headgear 14 is further provided with an adjusting rope 143, specifically, one end of the adjusting rope 143 passes through the pressing block 145 to be connected with the reinforcing layer 142, and the other end of the adjusting rope 143 is provided with an anti-dropping block, so as to prevent the rope end of the adjusting rope 143 from dropping from the pressing block 145 when the tightness of the headgear 14 is adjusted. The tightness of the head cover 14 is adjusted by matching the pressing block 145 with the inverted U-shaped groove 141, the head cover 14 has elasticity, the adjusting rope 143 has no elasticity, the adjusting rope 143 penetrates through the pressing block 145 to be connected with the reinforcing layer 142, the opening degree of the inverted U-shaped groove 141 is changed by changing the distance between the pressing block 145 and the connecting point of the adjusting rope 143 and the reinforcing layer 142, and the tightness of the head cover 14 is adjusted. The pressing block 145 is a resilient mechanism with a hole, and when no external force is applied, the spring inside the pressing block bounces up the pressing column to press the adjusting rope 143, and when the external force is applied, the pressing column compresses the spring, so that the adjusting rope 143 passing through the pressing column can be loosened.
In this embodiment, adjust rope 143 and pass compact heap 145 and be connected with enhancement layer 142, can change the opening degree in the groove 141 of falling U through changing the distance that compact heap 145 is apart from adjusting rope 143 and enhancement layer 142 tie point, and then adjust the elasticity of headgear 14, when guaranteeing that oronasal mask 1 wears firmly, the size that different heads are matchd in the groove 141 of cooperating falling U, and the messenger wears comfortablely, adjusts convenient and fast.
In this embodiment, oronasal mask 1 and respiratory tube 2, produce oxygen module 3, gasbag 4 and form respiratory device's of saving oneself gas circulation system jointly, and is concrete, and oronasal mask 1 is connected with respiratory tube 2's one end, produces oxygen module 3 and is connected with respiratory tube 2's the other end, produces oxygen module 3 and includes producing oxygen jar 31 and four-way unit 32, produces oxygen jar 31 and is connected with four-way unit 32, and gasbag 4 is connected with producing oxygen jar 31.
Compared with the prior art, in the embodiment, the four-way unit is adopted, the gas exhaled by the human body enters the air bag through the oxygen generating tank and then directly enters the circulating oxygen generation system of the human body respiratory system from the air bag by bypassing the oxygen generating tank by using only one breathing tube, the traditional two-tube or three-tube structure for realizing the circulating oxygen generation is simplified, the use process is more convenient, and the influence on the action of personnel is less; meanwhile, the phenomenon that the temperature of the gas rises when the gas passes through the oxygen generating tank twice in the breathing process caused by reciprocating airflow is avoided, so that the inspiration temperature of the breathing device is lower than that of the existing relevant standard by more than 20 ℃, and the comfort level of oxygen inhalation of personnel is improved.
In the embodiment, the oronasal mask 1 is connected with the breathing tube 2 through the first quick connector 21, and the headgear 14 on the oronasal mask 1 is convenient for fixing the oronasal mask 1 to make the oronasal mask closely fit with the face of a human body; the interface of the mouth-nose mask 1 and the breathing hose 2 adopts a universal interface, and can be conveniently replaced. The breathing tube 2 is a flexible hose so as to be bent and twisted when the self-rescue breathing device is packaged and used.
The oxygen generating tank 31 includes an inlet pipe 311, an outlet pipe 312, and an oxygen generating tank main body 313, and the oxygen generating tank main body 313 is exemplarily a rectangular parallelepiped shaped case. The oxygen generating agent is arranged in the oxygen generating tank main body 313, the air inlet pipe 311 and the air outlet pipe 312 are symmetrically arranged on the side surface of the oxygen generating tank main body 313, and the air outlet pipe 312 is connected with the connecting pipe 314 in an interference manner; in order to facilitate sealing and limiting, a step is arranged in the middle of the connecting pipe 314, one end of the connecting pipe 314 is inserted into the air outlet pipe 312, the limiting is realized by the step on the connecting pipe 314, in order to avoid the influence of overlong inserted part of the connecting pipe 314 on the flow of gas in the oxygen generating tank main body 313, the length of the inserted part is less than or equal to that of the air outlet pipe 312, a sealing ring is arranged at the step position, and the leakage of oxygen at the connecting part; the other end of the connecting pipe 314 is provided with a round thin rubber pad which is adhered to the air inlet of the air bag 4 to form a sealed air channel; the oxygen generating tank main body 313 is provided with filter screens at the connecting positions of the air inlet pipe 311 and the air outlet pipe 312 respectively, specifically, the filter screens are made of metal meshes and quartz cotton sheets, so that the phenomenon that oxygen generating agent powder leaks out through the air inlet pipe 311 and the air outlet pipe 312 when the self-rescue breathing device is stored or used, and other parts are damaged due to local high temperature or irritate a respiratory system of a human body is avoided.
The four-way unit 32 comprises a first channel 321, a second channel 322, a third channel 323 and a fourth channel 324, wherein the second channel 322 is communicated with the third channel 323 to form a pipeline, the shape and the size of the second channel 322 are consistent with those of the third channel, the first channel 321 is vertically arranged in the middle of the pipeline communicated with the second channel 322 and the third channel 323, the fourth channel 324 is vertically arranged in the middle of the pipeline communicated with the second channel 322 and the third channel 323 and is vertical to the first channel 321, the four-way structure is arranged to facilitate the circular flow of gas, an expiration hose and an inspiration hose are combined into one hose, and the wearing structure is simplified.
Specifically, first passageway 321 is connected with breathing pipe 2 through second quick-operation joint 325, and second quick-operation joint 325 buckle makes things convenient for breathing pipe 2 to install and change at the port of first passageway 321, and second quick-operation joint 325 and first passageway 321 joint position are provided with the sealing washer, avoid leaking gas.
Specifically, the second channel 322 is connected with the first air outlet of the air bag 4 through a third quick connector 326, and the third quick connector 326 is buckled at the port of the second channel 322, so that the assembly and disassembly are convenient; a sealing ring is arranged at the clamping position of the third quick connector 326 and the second channel 322, so that air leakage is avoided; the third quick connector 326 is provided with a round thin rubber pad which is bonded at the first air outlet of the air bag 4 to form a closed air channel; be provided with the check valve in the third quick-operation joint 326, guarantee that the oxygen in the gasbag 4 can flow into in the second passageway 322, and the gas in the second passageway 322 does not get into the gasbag 4, makes only the fresh air that oxygen concentration is high in the gasbag 4, guarantees the security of respiratory device when using of saving oneself.
Specifically, the third channel 323 is connected with the second air outlet of the air bag 4 through the fourth quick connector 327, and the fourth quick connector 327 is fastened at the port of the third channel 323, so that the assembly and disassembly are convenient; a sealing ring is arranged at the clamping position of the fourth quick connector 327 and the third channel 323, so that air leakage is avoided; the fourth quick connector 327 is provided with a round thin rubber pad, which is bonded at the second air outlet of the air bag 4 to form a closed air channel; the fourth quick connector 327 is internally provided with a one-way valve to ensure that oxygen in the air bag 4 can flow into the third channel 323, and gas in the third channel 323 does not enter the air bag 4, so that only fresh air with high oxygen concentration exists in the air bag 4, and the safety of the self-rescue breathing device in use is ensured.
Specifically, the fourth channel 324 is inserted into the air inlet pipe 311, and is limited by a step arranged on the fourth channel 324, so that the length of the inserted part is less than or equal to that of the air inlet pipe 311, the situation that the flow of gas in the oxygen generating tank main body 313 is influenced by the overlong inserted part and the arrangement of a heat conducting plate and a pipeline 315 is interfered is prevented, and a sealing ring is arranged at the step position to avoid the leakage of oxygen at the joint; a one-way valve is arranged in the fourth passage 324 to ensure that the gas in the fourth passage 324 can enter the oxygen generating tank main body 313, but the gas in the oxygen generating tank main body 313 cannot enter the fourth passage 324, so that the gas with high carbon dioxide concentration can only enter the oxygen generating tank main body 313 through the fourth passage 324 to react with the oxygen generating agent.
In this embodiment, the one-way valve is disposed at the connection position of the second channel 322, the third channel 323 and the fourth channel 324, the first channel 321 is connected with one end of the breathing tube 2, the second channel 322 is connected with the first air outlet, the third channel 323 is connected with the second air outlet, the fourth channel 324 is connected with the air inlet tube 311, and the air outlet tube 312 is connected with the air inlet. During the use, the gas that user of service expired flows through fourth passageway 324, intake pipe 311 by first passageway 321, and gas is inside in oxygen generating tank main part 313 and is reacted with the oxygen generating agent, and fresh air passes through outlet duct 312 and gets into gasbag 4, and when the human body breathed in, the gas in gasbag 4 gets into four-way unit 32 through first gas outlet, second gas outlet in, and it gets into first passageway 321 through breathing pipe 2 and gets into oronasal mask 1 and supply user of service to breathe to converge at last.
In this embodiment, only utilize a respiratory tube 2 to realize that the gas of human exhalation gets into gasbag 4 through oxygen generating tank 31 promptly, bypass oxygen generating tank 31 from gasbag 4 and directly get into the circulating oxygen generation of human respiratory system, the structure of traditional two pipe or three tubular realization circulating oxygen generation has been simplified, the use is more convenient, it is less to personnel's action influence, the respiratory process gas that has avoided reciprocating type air current to lead to makes gaseous temperature rising through oxygen generating tank 31 twice, the temperature of oxygen generation has been reduced, make respiratory device's the temperature of breathing in than the present relevant standard more than 20 ℃, respiratory comfort level has been improved.
In this embodiment, be the U type after gasbag 4 aerifys, produce oxygen jar 31 and inlay and establish in U type mouth, gasbag 4 includes first gas outlet, second gas outlet and air inlet, and gasbag 4 is vest formula design, makes respiratory device's main part distribute in the front of the chest, and the structure after folding is small and exquisite, and it is comfortable convenient to dress and use.
The utility model discloses a respirator oronasal mask saves oneself, through being provided with the connecting pipe at the connecting portion of oronasal mask, be provided with the boss on the outer face of cylinder of connecting pipe, the boss is umbelliform, the umbelliform opening is towards the connecting portion side, can install and remove fast with the quick-operation joint of respiratory tube, easy and simple to handle, the change of being convenient for; the headgear of the oronasal mask has elasticity, and can be directly worn on the head during use, thereby being convenient and fast.
The utility model discloses a respirator oronasal mask saves oneself, through setting up the hole in the headgear front end, the diameter in hole is less than the diameter of connecting pipe, fix on the connecting pipe through headgear elasticity to compress tightly through the supporting part, make the headgear fix firmly, guaranteed the stability of oronasal mask in the wearing process; the lower limb of headgear rear end is provided with the type groove of falling U, makes the headgear in the wearing process, and the size that the type groove opening degree of falling U can be according to user of service head is adjusted, under the prerequisite of guaranteeing oronasal mask and facial sealing, makes and wears comfortablely.
The utility model discloses a respirator oronasal mask saves oneself, the regulation rope passes the compact heap and is connected with the enhancement layer, can change the opening degree in the groove of falling U through changing the compact heap apart from the distance of regulation rope and enhancement layer tie point, and then adjust the elasticity of headgear, when guaranteeing that oronasal mask wears firm, the size that matches different heads in the groove of cooperating to fall U makes and wears comfortablely, adjusts convenient and fast; when the connecting part penetrates through the sealing part to be connected with the supporting part, the edge surface of the connecting part is matched and sealed with the inner contour of the sealing part, so that the sealing performance of the oronasal mask is ensured, a sealed gas passage is formed by the breathing device, and the safety in the using process is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A mouth-nose mask of a self-rescue respirator is characterized by comprising a supporting part (11), a connecting part (12), a sealing part (13) and a headgear (14); the supporting part (11) is connected with the connecting part (12), the sealing part (13) is sleeved on the outer side of the connecting part (12), and the head sleeve (14) is connected with the connecting part (12); the supporting portion (11) is used for supporting the connecting portion (12), the connecting portion (12) is used for connecting the supporting portion (11) and the sealing portion (13), the sealing portion (13) is used for being attached to the face, and the headgear (14) is used for wearing the oronasal mask (1) and can adjust the attaching degree of the sealing portion (13) and the face.
2. The self-rescue respirator oronasal mask according to claim 1, wherein the connecting portion (12) is a concave shell, the connecting portion (12) being provided with a connecting tube (121), the connecting tube (121) being provided on a convex side of the connecting portion (12);
a boss (122) is arranged on the outer cylindrical surface of the connecting pipe (121), the boss (122) is umbrella-shaped, and the umbrella-shaped opening faces the connecting part (12).
3. The self-rescue respirator oronasal mask according to claim 2, wherein the support portion (11) is provided with a through hole (111) in the middle.
4. The self-rescue respirator oronasal mask according to claim 3, wherein the diameter of the through hole (111) is larger than the diameter of the boss (122).
5. The mouth-nose mask of the self-rescue respirator according to claim 4, wherein the connecting part (12) is provided with a clamping seat (123), and the clamping seat (123) is in fit connection with a clamping groove arranged on the inner side of the supporting part (11).
6. The self-rescue respirator oronasal mask according to claim 1, wherein the top face (124) of the connecting portion (12) is adapted to the internal shape of the support portion (11); the edge surface (125) of the connecting part (12) is sealed in a form-fitting manner with the inner shape of the sealing part (13).
7. The self-rescue respirator oronasal mask according to claim 2, wherein the headgear (14) is elastic, the front end of the headgear (14) is provided with a mounting hole, the diameter of the mounting hole is smaller than that of the connecting pipe (121), and the headgear (14) is connected with the connecting pipe (121) through the mounting hole.
8. The mouth-nose mask of the self-rescue respirator as recited in claim 7, wherein the lower edge of the rear end of the headgear (14) is provided with an inverted U-shaped groove (141); the lower edge of the head cover (14) is also provided with a reinforcing layer (142).
9. The mouth-nose mask of the self-rescue respirator according to claim 8, further comprising a pressing block (145), wherein the headgear (14) is further provided with an adjusting rope (143), one end of the adjusting rope (143) passes through the pressing block (145) to be connected with the reinforcing layer (142), and the other end of the adjusting rope is provided with an anti-falling block (144);
the compression block (145) is matched with the inverted U-shaped groove (141) to adjust the tightness of the head sleeve (14).
10. The mouth-nose mask of the self-rescue respirator according to any one of claims 1 to 9, wherein the support portion (11) and the connecting portion (12) are made of plastic, the sealing portion (13) is made of silica gel, and the inner profile of the sealing portion (13) is adapted to the face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020143351.9U CN212067494U (en) | 2020-01-22 | 2020-01-22 | Respirator mouth nose cup of saving oneself |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020143351.9U CN212067494U (en) | 2020-01-22 | 2020-01-22 | Respirator mouth nose cup of saving oneself |
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| Publication Number | Publication Date |
|---|---|
| CN212067494U true CN212067494U (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020143351.9U Active CN212067494U (en) | 2020-01-22 | 2020-01-22 | Respirator mouth nose cup of saving oneself |
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| Country | Link |
|---|---|
| CN (1) | CN212067494U (en) |
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