CN110420404B

CN110420404B - Oxygen respirator with ventilation structure

Info

Publication number: CN110420404B
Application number: CN201910668333.4A
Authority: CN
Inventors: 柯高峰
Original assignee: Zhejiang Hengtai Safety Equipment Co ltd
Current assignee: Zhejiang Hengtai Safety Equipment Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2021-11-09
Anticipated expiration: 2039-07-23
Also published as: CN110420404A

Abstract

The invention discloses an oxygen respirator with a ventilation structure, and belongs to the technical field of emergency rescue equipment. An oxygen respirator having a vent structure, comprising a respirator body; the respirator main part is including gasbag subassembly, oxygen jar, cooling tank and clean jar at least, gasbag subassembly outer end is provided with the gasbag body, and the shaping of gasbag body lower extreme has a plurality of blow vent, and the lower tip intercommunication of cooling tank and/or clean jar has the blow vent. This technical scheme is specific discloses a structural design with tank body below such as oxygen jar, cooling tank and clean jar under the air-passing structure setting. The structural design can avoid the influence of impact. And the traditional mode of connecting by using a pipeline is abandoned in the ventilation mode, and the ventilation is directly carried out by forming a ventilation opening at the lower end of the air bag body. This further avoids the impact on the deformation of the pipe and reduces the temperature effect on the venting structure. The whole equipment is more stable and more convenient to assemble.

Description

Oxygen respirator with ventilation structure

Technical Field

The invention belongs to the technical field of emergency rescue equipment, and particularly relates to an oxygen respirator with a ventilation structure.

Background

At present, the oxygen respirator is also called an isolated compressed oxygen respirator. The respiratory system is isolated from the outside, the instrument forms internal circulation with the respiratory system of human body, the high-pressure gas cylinder provides oxygen, the air bag stores gas during breathing and inhaling, the gas is introduced from the past Soviet Union in the 50 s, the respiratory protection product is a respiratory protection product which is produced for decades and has wide range, the performance is stable and reliable, and the respiratory protection product is widely applicable to industries (departments) such as petroleum, chemical industry, metallurgy, coal, mine, laboratory and the like and is used for people specially trained to carry out emergency rescue, accident treatment, rescue or operation in toxic and harmful gas environment (common atmospheric pressure).

The ventilation structure of the existing oxygen respirator is usually arranged on one side of the upper end of a cleaning tank. And often all connect through the plastic pipe way, but such connected mode easily receives environmental factor influences such as temperature, collision, leads to the stability of work not enough.

Disclosure of Invention

The invention aims to provide an oxygen respirator capable of avoiding the influence of environmental factors such as air temperature and collision.

The purpose of the invention is realized as follows: an oxygen respirator having a vent structure, comprising a respirator body; the respirator main part is including gasbag subassembly, oxygen jar, cooling tank and clean jar at least, gasbag subassembly outer end is provided with the gasbag body, and the shaping of gasbag body lower extreme has a plurality of blow vent, and the lower tip intercommunication of cooling tank and/or clean jar has the blow vent.

Preferably, one end of the air port is provided with a bag pipe joint, and one end of the bag pipe joint is communicated with the lower end part of the cooling tank and/or the cleaning tank.

Preferably, the lower end of the cooling tank and/or the cleaning tank is provided with an air passage base, a communication channel is formed on one side of the air passage base, and two ends of the communication channel are respectively connected with the cooling tank and/or the cleaning tank and the bag pipe joint.

Preferably, the shaping of bag union end has the joint arch, intercommunication passageway one side shaping have with the annular of the protruding adaptation of joint.

Preferably, the formation of bag union one side has the installation arch that is linked together, and the outer pot head that installation arch and be equipped with the utricule circle, the outside of utricule circle is supported and is leaned on there the gasbag body.

Preferably, a sealing ring is abutted between the mounting bulge and the capsule connecting ring; the bag body connecting ring is clamped with the air bag body.

Preferably, the cleaning tank is fixedly arranged in the respirator body through an air flue base; a vent groove is formed on one side of the air flue base, an air inlet hole, an air exhaust hole and a ventilation hole are formed in the vent groove respectively, and a sealing plate is arranged outside the vent groove; the exhaust hole is communicated with an exhaust valve; the air inlet is communicated with an air inlet joint in the breather valve component; the ventilating hole is communicated with the cleaning tank.

Preferably, the lower end of the cleaning tank is respectively formed with an air inlet guide hole and an air outlet guide hole which are independently arranged, the upper ends of the air inlet guide hole and the air outlet guide hole are provided with a flow dividing partition plate, and the flow dividing partition plate enables an air inlet loop to be formed by dividing the air inlet guide hole and the air outlet guide hole.

Preferably, a plurality of filter screens are arranged in the cleaning tank, and the filter screens are respectively arranged on two sides of the flow dividing partition plate; an air passage sealing gasket is arranged at the lower end of the flow dividing partition plate, and the shape of the air passage sealing gasket is matched with that of the flow dividing partition plate; and a separation groove is formed between the air inlet guide hole and the air outlet guide hole, and the flow dividing partition plate and the separation groove are adapted to realize the division of the air inlet guide hole and the air outlet guide hole.

Preferably, the airbag module at least comprises the airbag body and an airbag film, and a space between the airbag film and the airbag body is used for realizing an airbag function; and the upper end of the air bag film is provided with a pressure maintaining device, and the pressure maintaining device is used for pressing the air bag film downwards so as to maintain the pressure.

Preferably, the pressurizer is including setting up the gasbag lid of gasbag body upper end, the lower extreme of gasbag lid is provided with a plurality of groups spring, the lower extreme of spring support by the gasbag film.

Preferably, the outside shaping of the gasbag body has a plurality of mounting hole, the upper end shaping of gasbag film has a plurality of spliced pole, thereby the spliced pole sets firmly thereby realize in the mounting hole gasbag lid with the connection of gasbag film.

Preferably, the lower end of the spring is provided with an air bag pressing plate, and the air bag film is arranged below the air bag pressing plate; the air bag cover is characterized in that a fixed convex column is formed on the air bag pressing plate, and a limiting clamping groove which is matched with the fixed convex column and used for fixing the spring is formed in the inner side of the air bag cover.

Preferably, go up the lid and pass through buckle subassembly buckle connection with lower casing, buckle subassembly is at least including the rotatable case buckle clip that sets up on last lid, and the one end shaping of case buckle clip has the spacing barb of a plurality of, the shaping have on the casing down with spacing card hole of spacing barb adaptation.

Preferably, the shaping of case buckle clip one end has the clip pivot, wears to be equipped with the torsional spring in the clip pivot, is provided with the torsion bar on the torsional spring, and torsion bar one end supports and leans on the lower extreme of case buckle clip provides ascending pressure.

Preferably, a box buckle wrench is arranged at the upper end of the box buckle clasp, and the box buckle wrench is rotatably arranged in the upper cover body; the lower extreme shaping of box buckle spanner has the rake, the middle part of box buckle clip upwards the arch lean on the post, lean on the post side to be provided with the rake, the rake supports to lean on the post and drive box buckle clip rotatory and then make spacing barb unhook realize the unblock.

Preferably, a back tool is arranged on the rear side of the lower shell, a support plate damping block is arranged on one side of the back tool, a waist pad is arranged on one side of the support plate damping block, and the support plate damping block is a rubber block.

Preferably, a waistband supporting plate is arranged between the supporting plate damping block and the waist pad; the outer side molding of backup pad damping piece has circular-arc accommodation area, adjustable setting of waistband backup pad is in on the backup pad damping piece just the shaping has with the arcuation location end of circular-arc accommodation area adaptation in the waistband backup pad.

Preferably, oxygen jar one side is connected with the relief pressure valve, and relief pressure valve one side is connected with the gulp valve through the trachea, and the gulp valve setting is in the lower extreme of the gasbag body just communicates up the gasbag body.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

this technical scheme specifically discloses a structural design with ventilation structure setting in jar bodies such as oxygen jar, cooling tank and clean jar below. The structural design can avoid the influence of impact. And the traditional mode of connecting by using a pipeline is abandoned in the ventilation mode, and the ventilation is directly carried out by forming a ventilation opening at the lower end of the air bag body. This further avoids the impact on the deformation of the pipe and reduces the temperature effect on the venting structure. The whole equipment is more stable and more convenient to assemble.

Drawings

FIG. 1 is one of the schematic structural diagrams of the present invention;

FIG. 2 is a detail of FIG. 1 at F;

FIG. 3 is a schematic view of FIG. 1 after the lower housing has been hidden;

FIG. 4 is a schematic view of the FIG. 3 after the sealing plate is hidden;

FIG. 5 is one of the schematic views of FIG. 4 after the upper cover is hidden;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a second simplified schematic view of the upper cover shown in FIG. 4 after it has been concealed;

FIG. 8 is a sectional view taken along line A-A of FIG. 7;

fig. 9 is a partial enlarged view at B in fig. 8;

FIG. 10 is an enlarged view of a portion of FIG. 8 at C;

FIG. 11 is a schematic view showing the structure of a cleaning tank and an air inlet joint;

FIG. 12 is a schematic view of the structure of the airway base and the purge canister;

FIG. 13 is a cross-sectional view taken along line C-C of FIG. 12;

FIG. 14 is a schematic view of the construction of the upper cover and lower housing;

FIG. 15 is a sectional view taken along line D-D of FIG. 14;

fig. 16 is a partial enlarged view at E in fig. 15.

In the figure: 1-an airbag module; 2-an oxygen tank; 3-cooling the tank; 4-cleaning the tank; 5-a breathing valve assembly; 6-upper cover body; 7-a lower shell; 8-the balloon body; 9-an air passage base; 10-a pressure maintaining device; 11-an exhaust valve; 12-a balloon membrane; 13-a spring; 14-connecting column; 15-air bag pressing plate; 16-fixed convex column; 17-a pressure reducing valve; 18-a gulp valve; 19-can body fasteners; 20-optical axis region; 40-separation groove; 41-mounting holes; 42-a locking member; 43-connecting piece; 44-a handle; 45-a gas inlet guide hole; 46-gas outlet guide hole; 47-a splitter baffle; 48-a filter screen; 49-airway seal;

51-an air inlet connector; 61-case buckle clasp; 62-a limiting barb; 63-clasp rotating shaft; 64-torsion spring; 65-box buckle spanner; 66-an inclined portion; 67-abutment posts; 71-a back-up; 72-support plate damping block; 73-waist pad; 74-a waistband supporting panel; 75-arc shaped adjusting area; 81-vent; 82-balloon catheter adapter; 83-clamping bulge; 84-mounting projections; 85-bag body connecting ring; 86-sealing ring; 91-a communication channel; 92-a vent channel; 93-an air inlet hole; 94-exhaust hole; 95-ventilation holes; 96-sealing plate; 101-airbag cover.

Detailed Description

The invention is further described below in terms of specific examples.

The first embodiment is as follows: 1-15, an oxygen respirator includes a respirator body; the respirator body at least comprises an air bag component 1, an oxygen tank 2, a cooling tank 3 and a cleaning tank 4. The technical scheme specifically discloses a structural form of an oxygen respirator.

Preferably, a cleaning tank storage area is formed in the respirator body, and the cleaning tank 4 is detachably arranged in the cleaning tank storage area; the respirator body also comprises a breather valve component 5, and the breather valve component 5 is independently arranged with the cooling tank 3 and/or the cleaning tank 4.

This technical scheme specifically discloses a clean jar 4's mounting means. Through the independent 4 designs of the cleaning tank in the cleaning tank storage area, the cleaning tank 4 can be quickly disassembled and assembled when needing to be actually replaced. The respirator body of the technical scheme comprises a three-way respirator and an air inlet connector 51, wherein the air inlet connector 51 is directly connected with a cleaning tank 4 in the prior art. In the present embodiment, the air inlet connector 51 is not directly connected to the cleaning tank 4, but is independently disposed from the cleaning tank 4, so as to rapidly extract the cleaning tank 4.

The independent dismouting of the clean jar 4 of this technical scheme, must mean simultaneously that its flow direction of admitting air and giving vent to anger all has the difference than in the past. Specifically, an independent gas flow passage is provided between the lower housing 7 and the cleaning tank 4, and the gas flow passage is connected to the gas inlet connector 51 on the one hand and the cleaning tank 4 on the other hand, so that the gas inlet connector 51 and the cleaning tank 4 can be detachably connected to each other, thereby realizing independent disassembly and assembly of the cleaning tank 4.

Preferably, the all sides shaping of cleaning tank 4 has a plurality of mounting hole 41, wears to be equipped with jar body fastener 19 in the mounting hole 41, and jar body fastener 19 one end sets up cleaning tank storage area other end is provided with retaining member 42 and supports and leans on cleaning tank 4.

This technical scheme specifically discloses a clean jar 4's mounting means. The fastener of this technical scheme can be the bolt. A plurality of threaded hole sites are arranged in the storage area of the cleaning tank, and the cleaning tank 4 is tightly connected with the threaded hole sites by bolts. Simultaneously, the locking piece 42 is a shoe-shaped gold ingot nut, and the upper side of the cleaning tank 4 is fastened by rotating the shoe-shaped gold ingot nut. During the in-service use, as long as loosen the ingot nut that corresponds and can realize the dismouting, it is very convenient.

Preferably, the tank body fastening piece 19 is formed with an optical axis area 20 matched with the cleaning tank 4, and the optical axis area 20 is used for being rapidly taken out when the cleaning tank 4 needs to be taken out.

The technical scheme specifically discloses a design idea mode of the fastener. The Guangzhou district's design can let the detergent jar 4 when needing to be taken out, can quick take out. Meanwhile, the length of thread processing is reduced, and the processing cost is reduced.

Preferably, the respirator body at least comprises an upper cover body 6 and a lower cover body 7, and the cleaning tank 4 is abutted against the inner side of the upper cover body 6 when the upper cover body 6 and the lower cover body 7 are closed.

This technical scheme specifically discloses a clean jar 4 mode of assisting fixed. In the actual product, the upper cover body 6 and the lower cover body 7 are designed commonly, and the cleaning tank 4 can be better fixed by pressing the cleaning tank 4 after the upper cover body 6 and the lower cover body 7 are closed.

Preferably, the upper end of the cleaning tank 4 is connected with a handle through a connecting sheet 43, one end of the connecting sheet 43 is arranged on the upper end surface of the cleaning tank 4, the other end of the connecting sheet is arranged in the handle, and the handle and the connecting sheet 43 are rotatably connected through a fastener.

This technical scheme specifically discloses a design of handle. This technical scheme the connection piece 43 preferential can be a little iron sheet, one end is through buckling and reserving a section plane district, thereby let the fastener pass this plane and go and clean jar 4 upper ends realization is fixed. The other end of the connecting piece 43 is vertically arranged and is arranged at the middle side of the connecting handle, and a fastener penetrates through the connecting piece 43 and the handle simultaneously to realize the hinging between the connecting piece 43 and the handle, so that the design of the handle is realized. The design mode is simple and easy to implement, complex modeling design and grinding tool cost investment are not needed, and the design mode is a preferential technical scheme.

Preferably, the outer end of the air bag component 1 is provided with an air bag body 8, the lower end of the air bag body 8 is formed with a plurality of air vents 81, and the lower end parts of the cooling tank 3 and/or the cleaning tank 4 are communicated with the air vents 81. The technical scheme specifically discloses a design scheme for communicating an air bag component 1 with a cooling tank 3 and/or a cleaning tank 4. Specifically speaking, this technical scheme with the gasbag body 8 and with the cooling tank 3 with the connection between the clean jar 4 put the downside. More specifically say through after setting up breather valve subassembly 5 and cooling tank 3 and/or clean jar 4 independently, just need redesign gas flow path, this technical scheme is exactly from traditional upper end direct piping connection, and then revises to put the downside to through a special blow vent 81 and cooling tank 3 and/or clean jar 4. This allows for redesign of the airflow channels.

Preferably, a bag pipe joint 82 is arranged at one end of the air vent 81, and one end of the bag pipe joint 82 is communicated with the lower end part of the cooling tank 3 and/or the cleaning tank 4. In the technical scheme, a bag pipe joint 82 is additionally arranged at the air vent 81, and the inside of the bag pipe joint 82 is communicated, so that one end of the bag pipe joint is used for connecting the air vent 81 and the other end of the bag pipe joint is used for connecting the lower end part of the cooling tank 3 and/or the cleaning tank 4. Therefore, in actual use, the cleaning tank 4 and the cooling tank 3 can be quickly attached and detached by detaching the connection of the bag tube joint 82 from the lower side.

Preferably, the lower end of the cooling tank 3 and/or the cleaning tank 4 is provided with an air passage base 9, a communication channel 91 is formed on one side of the air passage base 9, one end of the communication channel 91 is communicated with the cooling tank 3 and/or the cleaning tank 4, and the other end is communicated with the bag pipe joint 82. The technical scheme specifically discloses a connection mode of the cooling tank 3 and/or the cleaning tank 4 and the air bag body 8. The lower ends of the cooling tank 3 and/or the cleaning tank 4 are/is provided with the air channel base 9, so that connection is realized on the basis of not damaging the original structure.

Preferably, a clamping protrusion 83 is formed at one end of the bag pipe joint 82, and a ring groove matched with the clamping protrusion 83 is formed at one side of the communication channel 91. The technical scheme specifically discloses a structural design scheme of the bag pipe joint 82. The clamping protrusion 83 and the ring groove are designed to be connected better. Moreover, the matching is tighter, the sealing performance is good, and the position of each installation is relatively fixed.

Preferably, a mounting protrusion 84 communicated with each other is formed on one side of the bag pipe joint 82, a bag body connecting ring 85 is sleeved on the outer end of the mounting protrusion 84, and the outer side of the bag body connecting ring 85 abuts against the air bag body 8. The technical scheme specifically discloses an installation mode of an air bag pipe joint 82 and an air bag assembly 1. In practical use, the bag body coupling ring 85 is generally connected to the connecting portion below the airbag body 8, and then the mounting protrusion 84 is fitted to the inner side of the bag body coupling ring 85, thereby achieving the stability of the connection of the mounting protrusion 84, that is, the bag tube connector 82, to the airbag body 8. The design mode is simple and orderly, and is suitable for assembly.

Preferably, a sealing ring 86 is abutted between the mounting boss 84 and the capsule joint ring 85; the bag body connecting ring 85 is clamped with the air bag body 8. The technical scheme particularly discloses a structural principle that sealing performance is kept when the bag body connecting ring 85, the mounting protrusion 84 and the air bag body 8 are mounted. The sealing ring 86 is designed to enable a tighter connection between the mounting boss 84 and the bladder collar 85 for better sealing performance. Utricule flange 85 with the joint of the gasbag body 8 can be through having a recess on the utricule flange 85, have on the gasbag body 8 with the sand grip of this recess adaptation, the joint mode realizes fixedly like this.

Preferably, the cleaning tank 4 is fixedly arranged in the respirator body through an air flue base 9; a vent groove 92 is formed on one side of the air flue base 9, an air inlet hole 93, an air outlet hole 94 and a ventilation hole 95 are respectively formed in the vent groove 92, and a sealing plate 96 is arranged outside the vent groove 92; the exhaust hole 94 is communicated with an exhaust valve 11; the air inlet hole 93 is communicated with an air inlet joint 51 in the breather valve assembly 5; the ventilating hole 95 communicates with the purge tank 4.

The technical scheme specifically discloses a structural scheme for realizing gas circulation in the cleaning tank 4. Specifically, in order to connect the cleaning tank 4 to the air inlet connector 51, the whole air inlet loop is moved to the lower part of the cleaning tank 4. Specifically, when the gas enters from the inlet connector 51, the gas passes through the space formed by the vent groove 92 and the sealing plate 96, and a part of the gas in the space flows to the exhaust valve 11 through the exhaust hole 94; a part of the gas enters the purge tank 4 through the ventilation hole 95 to absorb the carbon dioxide.

Preferably, the lower end of the cleaning tank 4 is formed with an air inlet guide hole 45 and an air outlet guide hole 46 which are separately arranged, the upper ends of the air inlet guide hole 45 and the air outlet guide hole 46 are provided with a flow dividing partition plate 47, and the flow dividing partition plate 47 divides the air inlet guide hole 45 and the air outlet guide hole 46 to form an air inlet loop. The technical scheme specifically discloses a gas circulation mode in a tank body of a cleaning tank 4. In practical use, after the ventilating hole 95 in the gas enters the cleaning tank 4, the ventilating hole 45 enters the gas inlet guide hole 45, the gas inlet guide hole 45 enters one end of the cleaning tank 4 under the action of the redistributing partition plate 47, then enters the gas outlet guide hole 46 after being subjected to sufficient chemical reaction with chemical substances in the tank body of the cleaning tank 4, and then enters the communicating channel 91 through the gas outlet guide hole 46, so that the gas enters the air bag. Thereby realizing the entire circuit.

Preferably, a plurality of filter screens 48 are arranged in the cleaning tank 4, and the filter screens 48 are respectively arranged at two sides of the flow dividing partition plate 47; the lower end of the flow dividing partition plate 47 is provided with an air passage sealing gasket 49, and the shape of the air passage sealing gasket 49 is matched with that of the flow dividing partition plate 47; a separation groove 40 is formed between the air inlet guide hole 45 and the air outlet guide hole 46, and the dividing partition plate 47 is adapted to the separation groove 40 to divide the air inlet guide hole 45 and the air outlet guide hole 46. This technical scheme specifically discloses a structural design principle in clean jar 4. In the present embodiment, there are a plurality of filter screens 48, and preferably two filter screens are provided. Are respectively disposed on both sides of the division partition plate 47, i.e., in the vicinity of the air inlet guide hole 45 and the air outlet guide hole 46, respectively. The gas in the cleaning tank 4 can have a more sufficient chemical reaction from one end of the cleaning tank 4 to the other end of the cleaning tank 4. The air passage packing 49 serves to seal the air flow dividing partition plate 47 between the air inlet guide hole 45 and the air outlet guide hole 46, and the air between the air inlet guide hole 45 and the air outlet guide hole 46 is directly circulated from the connected gap without undergoing chemical action of the cleaning tank 4. The function of the dividing groove 40 and the dividing wall 47 is to achieve a fixed connection between the two, which is simple and effective and is the preferred installation method.

Preferably, the airbag module 1 at least comprises the airbag body 8 and the airbag film 12, and the space between the airbag film 12 and the airbag body 8 is used for realizing the airbag function; the upper end of the airbag film 12 is provided with a pressurizer 10, and the pressurizer 10 is used for pressing the airbag film 12 downwards so as to maintain the pressure.

The technical scheme specifically discloses a structure of an air bag component 1. The 'airbag' of the technical scheme is different from the traditional function of realizing the airbag by filling gas into canvas. But the space between the air bag body 8 and the air bag film 12 is skillfully utilized to realize the function of the air bag. In actual use, the airbag using the cloth is easy to break, thereby affecting the service life.

The airbag film 12 of the present embodiment is generally made of air rubber, which has a hardness and toughness about 2 times stronger than those of common rubber, and thus is a very suitable material. And the air bag body 8 is a mounted shell which is common in the traditional oxygen breathing apparatus, but in the past, the air bag body is often just used as a shell, and in the design, not only one shell but also the other half of the air bag body can be used. Therefore, the airbag structure is more stable and safe.

Preferably, the pressure maintaining device 10 comprises an airbag cover 101 disposed at the upper end of the airbag body 8, the lower end of the airbag cover 101 is provided with a plurality of sets of springs 13, and the lower end of the springs 13 abuts against the airbag film 12. The technical scheme specifically discloses the structural characteristics of the pressure maintaining device 10. This is simple and effective, and a relatively constant pressure can always be maintained by the pressure of the spring 13.

Preferably, the outside shaping of the gasbag body 8 has a plurality of mounting hole 41, the upper end shaping of gasbag film 12 has a plurality of spliced pole 14, spliced pole 14 sets firmly thereby realize in the mounting hole 41 gasbag lid 101 with the connection of gasbag film 12. This technical scheme more specifically discloses a structure of pressurizer 10, has more further introduced the mounting means of spring 13, and such mounting means can let spring 13 in violent rocking, can also keep a good stability, can not rock everywhere.

Preferably, the lower end of the spring 13 is provided with an air bag pressing plate 15, and the air bag film 12 is arranged below the air bag pressing plate 15; the air bag cover is characterized in that a fixing convex column 16 is formed on the air bag pressing plate 15, and a limiting clamping groove which is matched with the fixing convex column 16 and used for fixing the spring 13 is formed on the inner side of the air bag cover 101. The technical scheme specifically discloses a mode for realizing pressure maintaining by utilizing an air bag pressure plate 15. In actual use, the whole airbag film 12 can be pressed by the airbag pressing plate 15. Such an approach may be more uniform and efficient.

Preferably, the upper cover 6 and the lower cover 7 are connected by a buckle assembly, the buckle assembly at least comprises a box buckle clasp 61 rotatably arranged on the upper cover 6, one end of the box buckle clasp 61 is molded with a plurality of limiting barbs 62, and the lower cover 7 is molded with limiting clamping holes matched with the limiting barbs 62. This technical scheme specifically discloses a connection mode of upper cover 6 and lower casing 7. When the lower shell 7 can be closed again by the aid of the limiting barbs 62, the limiting barbs 62 can be clamped into the limiting clamping holes, and convenience is brought to the user. Generally, the position-limiting barb 62 is also formed with a lead-in portion with a triangular cross section for facilitating snap-in. Preferably, a clasp rotating shaft 63 is formed at one end of the box clasp 61, a torsion spring 64 penetrates through the clasp rotating shaft 63, a torsion bar is arranged on the torsion spring 64, and one end of the torsion bar abuts against the lower end of the box clasp 61 and provides upward pressure. The technical scheme particularly discloses a structure for realizing automatic reset through a torsion spring 64. In actual operation, the torsion bar of the torsion spring 64 abuts against the lower end portion of the box snap hook 61 and is designed to give the box snap hook 61 an upward driving force. The design can realize the function of automatic clamping.

Preferably, a box buckle wrench 65 is arranged at the upper end of the box buckle clasp 61, and the box buckle wrench 65 is rotatably arranged in the upper cover body 6; the lower extreme shaping of box buckle spanner 65 has the rake 66, the middle part of box buckle clasp 61 is upwards protruding to have to lean on post 67, supports to lean on the post 67 side to be provided with the rake 66, rake 66 supports to lean on post 67 and drive box buckle clasp 61 rotatory and then make spacing barb 62 unhook realize the unblock. The technical scheme specifically discloses a structural form for separating the upper cover body 6 from the lower cover body 7. In actual use, there is a gap between the box spanner 65 and the lower housing 7 for the hand to enter. When the hand is inserted, the box buckle wrench 65 is pulled upward, and the corresponding inclined portion 66 moves toward the side of the abutting column 67 and finally abuts against the abutting column 67, so that unlocking is achieved.

Preferably, a back tool 71 is arranged at the rear side of the lower shell 7, a support plate damping block 72 is arranged at one side of the back tool 71, and the support plate damping block 72 is a rubber block. The technical scheme specifically discloses an improved scheme of a back tool 71. The back piece 71 in the present embodiment is the sum of the necessary components for the user to carry the oxygen respirator on the back. The support plate damping mass 72 is a connection between the lower housing 7 and the lumbar pad 73. The backing plate damping mass 72 is traditionally absent, and now the presence of this mass allows the user to be more ventilated when carrying the back, without being covered. Then it uses the rubber block, preferably it uses nitrile rubber, its material is softer, therefore when the user leans against the waist cushion 73, can utilize its soft characteristic, according to the situation of people to do a adaptation. This allows for a better fit on the back of the user.

Preferably, a waistband supporting plate 74 is arranged between the supporting plate damping block 72 and the waist pad 73; an arc-shaped adjusting area 75 is formed on the outer side of the supporting plate damping block 72, the waistband supporting plate 74 is adjustably arranged on the supporting plate damping block 72, and an arc-shaped positioning end matched with the arc-shaped adjusting area 75 is formed on the waistband supporting plate 74. The technical scheme specifically discloses an adjusting mode. The angle of the waist belt supporting plate 74 can be adjusted by the radian of the contact between the supporting plate damping block 72 and the waist belt supporting plate 74, so that the waist belt supporting plate is more fit to the human body.

Preferably, one side of the oxygen tank 2 is connected with a pressure reducing valve 17, one side of the pressure reducing valve 17 is connected with an air compensating valve 18 through an air pipe, and the air compensating valve 18 is arranged at the lower end of the air bag body 8 and is communicated with the air bag body 8 upwards. The technical scheme specifically discloses a layout design of the gulp valve 18. The communication between the pressure reducing valve 17 and the air compensating valve 18 can form an automatic air compensating device, and a pressure self-balancing device is mainly arranged in the automatic air compensating device, so that the automatic air compensating device is prevented from being interfered by air pressure change.

Example two: the present embodiment is basically the same as the first embodiment, but the difference is that the connection modes of the air inlet joint 51, the gas flow passage and the cleaning tank 4 are different. The gas flow channel is arranged at the lower side of the cleaning tank 4 and is connected with the gas flow channel through an opening at the lower end of the cleaning tank 4. In this embodiment, the gas channel can be connected and sealed with the cleaning tank 4 by an intermediate nut, i.e., one end of the gas channel has a threaded section, the cleaning tank 4 also has a threaded section, and the connection is realized by the position change of the nut between the two threaded sections. There are, of course, many ways of connecting the gas flow passage to the purge tank 4, and only two of them are specified here.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. An oxygen respirator having a vent structure, comprising a respirator body; the method is characterized in that:

the respirator body at least comprises an air bag component (1), an oxygen tank (2), a cooling tank (3) and a cleaning tank (4);

an air bag body (8) is arranged at the outer end of the air bag component (1), a plurality of air vents (81) are formed at the lower end of the air bag body (8), and the air vents (81) are communicated with the lower end parts of the cooling tank (3) and/or the cleaning tank (4);

one end of the air vent (81) is provided with a bag pipe joint (82), and one end of the bag pipe joint (82) is communicated with the lower end part of the cooling tank (3) and/or the cleaning tank (4);

a communicated mounting bulge (84) is formed on one side of each bag pipe joint (82), a bag body connecting ring (85) is sleeved at the outer end of each mounting bulge (84), and the outer side of each bag body connecting ring (85) is abutted against the air bag body (8);

a sealing ring (86) is abutted between each mounting bulge (84) and the capsule body connecting ring (85);

the lower end of the cooling tank (3) and/or the cleaning tank (4) is provided with an air passage base (9), one side of the air passage base (9) is formed with a communication channel (91), and two ends of the communication channel (91) are respectively connected with the cooling tank (3) and/or the cleaning tank (4) and the bag pipe joint (82);

a clamping protrusion (83) is formed at one end of the bag pipe joint (82), and a ring groove matched with the clamping protrusion (83) is formed at one side of the communication channel (91);

the bag body connecting ring (85) is clamped with the air bag body (8).

2. The oxygen respirator having a vent structure of claim 1, wherein: the cleaning tank (4) is fixedly arranged in the respirator body through an air passage base (9); a vent groove (92) is formed in one side of the air passage base (9), an air inlet hole (93), an air exhaust hole (94) and a ventilation hole (95) are formed in the vent groove (92) respectively, and a sealing plate (96) is arranged outside the vent groove (92); the exhaust hole (94) is communicated with an exhaust valve (11); the air inlet hole (93) is communicated with an air inlet joint (51) in the breather valve assembly (5); the ventilating hole (95) is communicated with the cleaning tank (4).

3. The oxygen respirator having a vent structure of claim 1, wherein: an air inlet guide hole (45) and an air outlet guide hole (46) which are independently arranged are formed at the lower end of the cleaning tank (4) respectively, a flow dividing partition plate (47) is arranged at the upper ends of the air inlet guide hole (45) and the air outlet guide hole (46), and the flow dividing partition plate (47) enables an air inlet loop to be formed by dividing the air inlet guide hole (45) and the air outlet guide hole (46).

4. The oxygen respirator having a vent structure according to claim 3, wherein: a plurality of filter screens (48) are arranged in the cleaning tank (4), and the filter screens (48) are respectively arranged at two sides of the flow dividing partition plate (47); an air passage sealing gasket (49) is arranged at the lower end of the flow dividing partition plate (47), and the shape of the air passage sealing gasket (49) is matched with that of the flow dividing partition plate (47); a separation groove (40) is formed between the air inlet guide hole (45) and the air outlet guide hole (46), and the flow dividing partition plate (47) is matched with the separation groove (40) and used for realizing the division of the air inlet guide hole (45) and the air outlet guide hole (46).

5. The oxygen respirator having a vent structure of claim 1, wherein: the airbag assembly (1) at least comprises the airbag body (8) and an airbag film (12), and the space between the airbag film (12) and the airbag body (8) is used for realizing an airbag function; the upper end of the air bag film (12) is provided with a pressure maintaining device (10), and the pressure maintaining device (10) is used for pressing the air bag film (12) downwards so as to maintain the pressure; the pressure maintaining device (10) comprises an air bag cover (101) arranged at the upper end of the air bag body (8), a plurality of groups of springs (13) are arranged at the lower end of the air bag cover (101), and the lower ends of the springs (13) are abutted against the air bag film (12); a plurality of mounting holes (41) are formed in the outer side of the air bag body (8), a plurality of connecting columns (14) are formed in the upper end of the air bag film (12), and the connecting columns (14) are fixedly arranged in the mounting holes (41) so that the connection between the air bag cover (101) and the air bag film (12) is realized; an air bag pressing plate (15) is arranged at the lower end of the spring (13), and an air bag film (12) is arranged below the air bag pressing plate (15); fixed convex column (16) are formed on the air bag pressing plate (15), and a limiting clamping groove matched with the fixed convex column (16) and used for fixing the spring (13) is formed on the inner side of the air bag cover (101).