CN107096142A - Positive-pressure air respirator - Google Patents

Positive-pressure air respirator Download PDF

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Publication number
CN107096142A
CN107096142A CN201710482541.6A CN201710482541A CN107096142A CN 107096142 A CN107096142 A CN 107096142A CN 201710482541 A CN201710482541 A CN 201710482541A CN 107096142 A CN107096142 A CN 107096142A
Authority
CN
China
Prior art keywords
supply
airway tube
valve
gas cylinder
backboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710482541.6A
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Chinese (zh)
Inventor
钮静江
钱锋
卢旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongtai City Jianghai Lifesaving & Firefighting Equipment Co Ltd
Original Assignee
Dongtai City Jianghai Lifesaving & Firefighting Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongtai City Jianghai Lifesaving & Firefighting Equipment Co Ltd filed Critical Dongtai City Jianghai Lifesaving & Firefighting Equipment Co Ltd
Priority to CN201710482541.6A priority Critical patent/CN107096142A/en
Publication of CN107096142A publication Critical patent/CN107096142A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00Respiratory apparatus
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02Masks
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/10Valves
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00Component parts for respiratory or breathing apparatus
    • A62B9/02Valves

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The invention discloses a kind of positive-pressure air respirator, including back board module and the gas cylinder assembly being fixed on back board module, the gas cylinder assembly leads to respirator steam supply valve through depressurizing valve assembly and mask air supply hose, airway tube slide is installed with respirator steam supply valve, airway tube is slidably fitted with airway tube slide;The inner of airway tube is connected with supplying the outer end of pull bar, and the inner of the supply pull bar is movably connected on lock hook, and supply extension spring is provided between lock hook and supply valve body;Lockplate is installed with supply valve body, lock hole is provided with the lockplate, the hook portion of the lock hook is corresponding with locking hole site;Hinged on supply valve body to have supply lever, the supply lever other end relative with hinge support is connected on diaphragm;Supply lever is connected with supplying the outer end in contact of pull bar.The respirator is not only active in one's movements, respiratory resistance is small, and good seal performance, it is adaptable in various positive-pressure air respirators.

Description

Positive-pressure air respirator
Technical field
The present invention relates to a kind of fire-extinguishing and lifesaving with personal protection air respiratorresuscitator, more particularly to it is a kind of fire, dust and Wait the air respiratorresuscitator in emergency circumstances used for survivor in toxic gas scene.
Background technology
Positive-pressure air respirator is fire fighter and speedily carries out rescue work rescue personnel when carrying out fire extinguishing and rescue, to prevent Suction harmful smog, poison gas, the nuisance being suspended in air or a kind of aerial respiration used under anaerobic environment Device.Positive-pressure air respirator can effectively prevent harmful poisonous gas outside mask from being invaded into cover, and safety is used with higher Property and reliable protective value, it mainly include compressed air bottle, bottle head pressure-reducing valve, backboard and full facepiece mask are born, in full facepiece mask The steam supply valve equipped with the supply of breathing air into cover is gone up, steam supply valve can be opened or closed with the breathing of user, to incite somebody to action Air after decompression is used by mask for people's breathing.The supply stability and respiratory resistance size of steam supply valve are exhaled whole air The comfort and security reliability of haustorium seem particularly significant.
Steam supply valve is one of critical component of positive-pressure air respirator, and it is directly related to the usability of air respiratorresuscitator Can, and user breathing smoothness and security.Chinese invention patent 89210025.7 discloses a kind of " positive pressure respirator Type mechanism for positive pressure ", it is mainly made up of diaphragm, liner plate, rocking bar, intake valve and compression spring, when user suck air when, Negative suction band dynamic diaphragm and lever are moved downwardly together, and the moving down of diaphragm promotes rocking bar to open air intake valve again, supply valve to Input air in mask, will promote diaphragm, lever and rocking bar to beat successively when this structure is due to using by intake negative-pressure Drive air valve block into and supplied into cover, interlinked mechanism is more, and sensitivity is low, and needs by specialized training;Especially supply is to pass through What rocking bar deflection made steam supply valve block produce slanted gap seam and supplied, it is poorly sealed, leakage is easily produced, fresh air is both wasted Source, is likely to result in the infiltration of pernicious gas again.The position opened or closed depending on rocking bar of steam supply valve in said structure, when exhaling When haustorium is in non-working condition, rocking bar is moved with mask or putting position may also form unstability, can still result in intake valve close Feng Buyan and produce leakage.Chinese invention patent 200920126137.6 also discloses that a kind of " positive-pressure air respirator supply Valve ", it also includes diaphragm, piston, piston body, back-moving spring and transmission mechanism, and diaphragm is acted on by transmission mechanism when using Piston one end, piston other end connection valve head, valve head controls opening or closing for valve port, although the structure is with preferably close Sealing property, and structure is more compact, but the complicated mechanism of control valve head, transmission resistance and valve head close the thrust opened Greatly;Therefore respiratory resistance is larger, and adaptation population is restricted, so as to influence its practicality;Simultaneously in non-usage situation, also lack Few effective locking to valve head, easily forms valve port leakage.
The content of the invention
For the above-mentioned deficiency present in prior art, the technical problems to be solved by the invention are to provide a kind of positive-pressure type Air respiratorresuscitator, its mask steam supply valve is not only active in one's movements, respiratory resistance is small, and good seal performance, can realize reliable close Block stops.
In order to solve the above-mentioned technical problem, positive-pressure air respirator of the invention, including back board module and be fixed on Gas cylinder assembly on back board module, the gas cylinder assembly leads to respirator steam supply valve through depressurizing valve assembly and mask air supply hose, should Respirator steam supply valve is installed on mask, and the respirator steam supply valve includes supply valve body, and solid by steam supply valve top cover Dingan County is installed with airway tube slide on the supply valve body, slided in airway tube loaded on the diaphragm on supply valve body Airway tube is slidably fitted with seat, the outer end of the airway tube is provided with supply sealing gasket, and supply sealing gasket is pacified by gasket base Loaded on airway tube slide;The air supply channel being sealed and installed with airway tube slide on heating pipe joint, heating pipe joint passes through Supply sealing gasket leads to airway tube;The inner of airway tube is connected with supplying the outer end of pull bar, the inner activity of the supply pull bar It is connected on lock hook, supply extension spring is installed between lock hook and supply valve body;It is fixedly mounted on supply valve body There is lockplate, lock hole is provided with the lockplate, the hook portion of the lock hook is corresponding with locking hole site;In steam supply valve sheet Hinged on body to have supply lever, the supply lever other end relative with hinge support is connected on diaphragm;Lever is supplied to draw with supply The outer end in contact of bar is connected;Latch hook push rod, front end and the lock hook phase of latch hook push rod are also movably set with supply valve body Correspondence, latch hook push rod back-moving spring is provided between latch hook push rod and supply valve body;It is supported with the airway tube slide Valve rod is bypassed, bypass valve rod the inner is connected with gasket base, the outer end for bypassing valve rod is connected with bypassing valve hand wheel, by this Port valve handwheel is rotatably connected on airway tube slide.
In said structure, the respirator steam supply valve on the mask of positive-pressure air respirator is due in the outer end of airway tube Supply sealing gasket is provided with, airway tube is again slidably supported on airway tube slide, as airway tube reciprocatingly slides vertically, air guide The pipe outer end mouth of pipe with supply sealing gasket be separated when then form airspace, gas circuit can be then closed when both fit, it is this by Airway tube is with the valve type structure of sealing gasket structure, forming reliable sealing loop wire between the airway tube mouth of pipe and supply sealing gasket, no Only so that steam supply valve ventilation is smooth, respiratory resistance is small, substantially increases usage comfort, and closes tightly, and barrier propterty is good, Reliable closing or the opening of steam supply valve can be realized.Lever pendulum is formd due to supply lever hinged on supply valve body again Activity supporting point, the other end of supply lever is then connected on the diaphragm for breathing and back and forth agitating with user, during expiration in steam supply valve Pressure increase causes diaphragm outwards to agitate, and diaphragm is pressed close to supply sealing gasket to cut off gas circuit by supplying lever pushing airway tube;Inhale Diaphragm is inwardly moved during gas, and airway tube causes the airway tube mouth of pipe to leave supply sealing gasket by supply extension spring, is formed between the two Supply gap, fresh air by the gap to user provide fresh air, by supply lever power amplification, easily Respiratory movement just can by leverage promote airway tube move, be effectively improved the autokinesis of airway tube, lead Tracheae movement is flexible, reduces respiratory resistance.Due also to being fixed with lockplate on supply valve body, the lockplate is provided with lock Determine hole, the hook portion of lock hook can be caught in lock hole just at the right time, when steam supply valve is in non-working condition, promote latch hook pushrod advances So that the hook portion of lock hook is caught in the lock hole of lockplate, airway tube is closely attached on supply by lock hook all the time by supplying pull bar On sealing gasket, steam supply valve is in reliable closed mode, realize effective airtight lock, and steam supply valve needs to enter and uses shape During state, the diaphragm inwardly agitated touches the hook portion top of lock hook, and the hook portion of lock hook is deviate from from lock hole, into normal Supply state is breathed, the mechanism can be realized and is locked and closed, and be easy to open and use again, and delicate structure is easy to use, in the present invention Steam supply valve in, due to be supported with airway tube slide connection supply sealing gasket bypass valve rod, in emergency circumstances by twist Dynamic bypass valve hand wheel can make bypass valve rod drive gasket base and supply sealing gasket thereon to leave airway tube, compressed air bottle In novel air can be unimpededly into being used for people's breathing in mask, without the valve arrangement by airway tube, sealing gasket composition Control, so when air valve breaks down, still ensure that in critical environment user suction fresh air, increase The strong security reliability used.The respirator steam supply valve structure design of the present invention is exquisite, and flexible movements are reliable, respiratory resistance It is small, it is safe and reliable.
Further embodiment of the present invention, the decompression valve assembly is installed on the position of bottleneck of gas cylinder assembly, in decompression Pressure-air interface and low-pressure air interface are provided with the valve body of valve assembly, the pressure-air interface is filled with residual gas display alarm Put and be connected;Mask air supply hose is parallel with the low-pressure air interface and he rescues air supply pipe.The structure can be reminded in time Compressed air surplus in user's gas cylinder, so as to protect the security of user;Again two people a compressed gas can be shared when critical Bottle, implements him and rescues.
Digital indicator is installed on further embodiment of the present invention, the mask.User is set to bow, just Energy mask window sees the important informations such as gas cylinder behaviour in service clearly, to ensure the security of user.
Mounting hole is provided with the preferred embodiment of the present invention, the lock hook, the inner of supply pull bar is connected in lock In the mounting hole for determining hook, it is inner that pull bar stage clip is supported on supply pull bar;The supply lever is hinged in supply by lever support On valve body;Supply lever seat is installed, supply lever is connected on supply lever seat on the diaphragm.Kidney-shaped on lock hook Hole and pull bar stage clip can ensure under behaviour in service that airway tube is fitted with supply the tight of sealing gasket during expiration, so as to improve it Sealing property, the structure also improves its assembly performance, is easy to manufacture and assembles.This is simple and reasonable, is easy to make and fills Match somebody with somebody.
Ring-type air supply channel is provided with the further embodiment of the present invention, the airway tube slide, is supplied in the ring-type The both sides of gas passage are respectively arranged with sealing ring, and the heating pipe joint is hermetically installed on airway tube slide by the sealing ring, The air supply channel of heating pipe joint is connected with the air supply channel on airway tube slide.Sealing structure advantages of simple, and pass through Heating pipe joint is to the multi-direction flexible supply of steam supply valve.
The further embodiment of the present invention, the bypass valve rod is hermetically supported on airway tube slide by valve stem seal On, equipped with bypass stage clip on bypass valve rod;Positioning ratchet wheel detent mechanism is housed between the bypass valve rod and bypass valve hand wheel. It is rational in infrastructure, it is easy to use and operates.
The preferred embodiment of the present invention, the back board module includes backboard body, in the symmetrical line position of backboard body Provided with backboard convex tendon, gas cylinder upper bracket and gas cylinder undersetting are respectively arranged with backboard convex tendon;It is provided with backboard body A bottle hand hole is carried, the lower end of backboard body is installed with barge bumpar;Waistband is also associated with backboard body and gas cylinder is fixed Band, the waistband is connected with waist cushion by bustle cingulum, and shoulder cushion is connected with shoulder belt;One end of shoulder belt is connected to the back of the body Plate body upper end, the other end of shoulder belt is connected on waistband.Due to being provided with backboard convex tendon in backboard body in said structure, And gas cylinder upper bracket and gas cylinder undersetting are provided with backboard convex tendon, the setting of one side backboard convex tendon not only increases backboard Rigidity and intensity, for gas cylinder fix secure support is provided;And the setting of backboard convex tendon can mitigate the weight and materials of backboard, Effectively mitigate user's motion burden, improve operation comfort level and the activity duration of user;On another aspect backboard convex tendon The setting that the upper and lower bearing of gas cylinder and gas cylinder fixing band can form undersetting on the reliable fixation to gas cylinder, gas cylinder changes tradition Uncertainty of the backboard to gas cylinder supporting and fixing so that the fixation to gas cylinder is more firm, it is to avoid gas cylinder is on backboard in use Rock, both increase usage safety performance, also improve comfort.Again due to increasing in shoulder belt and with waistband correspondence position If shoulder cushion and waist cushion, it is to avoid the Le of shoulder belt and waistband and human body compels sense, it is ensured that brace and waistband and human body fill Divide laminating, it is to avoid gas cylinder is rocked to steady caused sense of discomfort under toter's center of gravity, is dressed more comfortable.More due in backboard sheet The lower end of body is installed with barge bumpar, and is additionally provided with to carry in backboard body and carries a bottle hand in a bottle hand hole, backboard body Hole convenient use person lifts and wears air respiration device, is easy to grab by gripping, and the anticollision positioned at backboard body lower end is protected Pad, can effectively mitigate the impact endurance test shock for unloading when bearing backboard body and ground, both prevent movement of the gas cylinder on backboard to alter Position, more avoids gas cylinder body and bottle head pressure regulator valve to hidden danger caused by the impact failure of ground.Therefore the backboard of the present invention Component is not only lifted conveniently, and wearing bears comfortable, and can form effective protection to gas cylinder body and backboard, using more pacifying Entirely.
Bottle valve bearing is provided with the further embodiment of the present invention, the backboard body, the bottle valve branch seat In the top of barge bumpar.Reliable fixed and effectively protection can be carried out to gas cylinder and bottle valve.
The preferred embodiment of the present invention, the shoulder belt has two, and two shoulder belts are located at the both sides of backboard body respectively; The band edge of the waistband extends to the both sides of backboard body respectively, and buckle is housed in the band edge of waistband;The waist cushion is from the back of the body The waistband position insertion of plate body side to backboard body another half waistband.Shoulder belt bears a heavy burden uniformly, bears light comfortable;Bear It is fixed, bear comfortable.
The further embodiment of the present invention, two band edges of the gas cylinder fixing band prolong to the both sides of backboard body respectively Stretch, one end of the gas cylinder fixing band is connection ring, and the other end of gas cylinder fixing band is connected with seta hasp;The gas cylinder upper bracket Position it is corresponding with gas cylinder fixing band position.It can realize that reliable support is fixed to gas cylinder, and be fixed conveniently.
Brief description of the drawings
Positive-pressure air respirator of the present invention is described further with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of structural representation of embodiment of positive-pressure air respirator of the present invention;
Fig. 2 is the structural representation under respirator steam supply valve use state in positive-pressure air respirator of the present invention;
Fig. 3 is structural representation of respirator steam supply valve shown in Fig. 2 under locking non-usage situation;
Fig. 4 is a kind of structural representation of embodiment of positive-pressure air respirator dorsulum component of the present invention;
Fig. 5 is A-A cross-section structure enlarged diagrams in structure shown in Fig. 4;
Fig. 6 is B-B cross-section structure enlarged diagrams in structure shown in Fig. 4.
In figure, 1-gas cylinder assembly, 2-back board module, 201-backboard body, 202-bustle cingulum, 203-waistband, 204-waist cushion, 205-gas cylinder fixing band, 206-seta hasp, 207-shoulder cushion, 208-shoulder belt, 209-gas cylinder Upper bracket, 210-connection ring, 211-backboard convex tendon, 212-carry a bottle hand hole, 213-buckle, 214-gas cylinder undersetting, 215-bottle valve bearing, 216-barge bumpar, 3-decompression valve assembly, 4-he rescues steam supply valve, 5-mask air supply hose, 6- Respirator steam supply valve, 601-supply valve body, 602-latch hook push rod back-moving spring, 603-latch hook push rod, 604-supply are drawn Spring, 605-diaphragm, 606-bail, 607-steam supply valve top cover, 608-top cover dividing plate, 609-top cover stomata, 610-confession Gas lever seat, 611-lock hook, 612-pull bar stage clip, 613-supply lever, 614-pull bar waist hole, 615-supply pull bar, 616-lever support, 617-airway tube slide, 618-airway tube, 619-slide sealing ring, 620-supply sealing gasket, 621-gasket base, 622-bypass stage clip, 623-bypass valve hand wheel, 624-bypass valve rod, 625-jump ring, 626-bypass Top cover, 627-valve stem seal, 628-heating pipe joint, 629-lock hole, 630-lockplate, 631-mask valve seals, 7-mask, 8-digital indicator, 9-residual gas display alarm.
Embodiment
Positive-pressure air respirator as shown in Figure 1, including back board module 2, binding is fixed with gas cylinder on back board module 2 Decompression valve assembly 3 is installed on assembly 1, the gas cylinder mouthful of gas cylinder assembly 1, high pressure is provided with the valve body of decompression valve assembly 3 empty Gas interface and low-pressure air interface, the pressure-air interface are connected with residual gas displaying alarm 9;On low-pressure air interface simultaneously It is associated with mask air supply hose 5 and he rescues air supply pipe 4.Compressed air is through depressurizing valve assembly 3 and mask air supply hose in gas cylinder assembly 1 5 lead to respirator steam supply valve 6, are installed in respirator steam supply valve 6 by mask valve seals 631 on mask 7.Mask supply is soft One end of pipe 5 is connected on the low-pressure air interface of decompression valve assembly 3, and the other end is connected to the air supply pipe of respirator steam supply valve 6 On joint 628.Digital indicator 8 is housed, the digital indicator 8 is HUD new line digital indicators, positioned at mask 7 on mask 7 Mask form below.
The breathing steam supply valve 6 of positive-pressure air respirator as shown in Figure 2, it includes the supply valve body being made of injected plastic 601, in tubular construction, O-ring seal by the tube and thereon is by steam supply valve clamping for the lower end of the supply valve body 601 In on mask body.The upper oral part of supply valve body 601 is provided with diaphragm 605, is additionally provided with above the oral area for supplying valve body 601 Steam supply valve top cover 607, valve body is supplied by steam supply valve top cover 607 by the geometrical clamp of diaphragm 605 loaded on supply valve body 601 601 and steam supply valve top cover 607 thereon be mutually permanently connected by bail 606.If being provided with the top of steam supply valve top cover 607 Dry top cover stomata 609, the inner side of steam supply valve top cover 607 is provided with top cover dividing plate 608.
Airway tube slide 617 is installed with the leftward position of supply valve body 601, the airway tube slide 617 is substantially Cylindrical structure, center line of its center line perpendicular to the supply pipe portion of valve body 601.In the middle section of airway tube slide 617 Put the air supply channel that outside is provided with ring-type.The bottom land of the air supply channel is provided with some passages through airway tube slide wall, ring The both sides of shape air supply channel are mounted on slide sealing ring 619, and slide sealing ring 619 is O-ring seal, heating pipe joint 628 are hermetically installed on airway tube slide 617 by two slide sealing rings 619, the tubulose air supply channel of heating pipe joint 628 It is connected with the ring-type air supply channel of airway tube slide 617, the tubulose air supply channel central axis of heating pipe joint 628 is in leading The pipe portion center line of tracheae slide 617.Heating pipe joint 628 is connected by air supply hose with the pressure regulator valve on compressed air bottle It is logical.
Airway tube 618 is slidably fitted with the core position of airway tube slide 617, airway tube 618 is circular tube shaped metal tube, The right side outer end nozzle position of airway tube 618 is provided with supply sealing gasket 620, supply sealing gasket 620 passes through gasket base 621 Movably supporting is installed on airway tube slide 617.Gasket base 621 is fixedly installed in the left position of bypass valve rod 624, Bypass valve rod 624 is seal-installed on position on the right side of the pore of airway tube slide 617 by valve stem seal 627.In airway tube slide Leading to screw thread twist-on on 617 has bypass valve hand wheel 623, and bypass valve rod 624 is fixedly connected by jump ring 625 with bypass valve hand wheel 623, In the outer end of bypass valve hand wheel 623 equipped with bypass top cover 626, bypass stage clip 622 is set with bypass valve rod 624, in bypass The conventional ratchet and pawl arrangement for being used for positioning locking is housed between valve rod 624 and bypass valve hand wheel 623.Turn bypass valve hand wheel 623 can drive bypass valve rod 624 to make it axially movable;Ratchet and pawl arrangement can be by bypass valve rod or bypass valve hand wheel 623 are locked on certain position.
The inner of airway tube 618 is connected with supply pull bar 615, and the bar outer end bending of supply pull bar 615 is in 90 °, and from pipe It is interior to be extended through corresponding blocked hole on the tube wall of airway tube 618 on the outside of tube wall.Mounting hole is provided with lock hook 611, is supplied The inner of pull bar 615 is movably connected in the mounting hole of lock hook 611.The front end of lock hook is hook portion, and the rear end of lock hook is in " T " font structure, the one end of pull bar stage clip 612 be supported on supply pull bar 615 be located at mounting hole the inner, pull bar stage clip 612 it is another One end is then supported on the T-shaped portion position of lock hook 611, and pull bar stage clip 612 is cylindrical compression spring, and it will supply pull bar all the time 615 press to the right end position of mounting hole.Equipped with supply between the rear end of lock hook 611 and the supply leftward position of valve body 601 Extension spring 604, the supply extension spring 604 is pulled away from the trend of supply sealing gasket 620 by supplying pull bar 615 to the formation of airway tube 618.
Supply valve body 601 on by lever support 616 it is hinged have supply lever 613, this structure be easy to assembling and Safeguard, it is possible to obtain larger lever ratio, beneficial to reduction respiratory resistance.Supply relative with hinge support another on lever 613 End is connected on supply lever seat 610, and supply lever seat 610 is installed on diaphragm 605 by diaphragm liner plate.Supply lever 613 Close contact is affixed in bar segment position corresponding with supply pull bar 615 outer end and the bending end of supply pull bar 615.Upon exhalation, film Piece 5 is outwards heaved and driven to be lifted on supply lever 613, in supply lever 613 in coercive mechanism swing process, supplies lever 613 The bending end of supply pull bar 615 is promoted, then promotes the pipe end of airway tube 618 to be affixed to supply sealing gasket 620 and realizes sealing;Work as suction During gas, diaphragm 605 is agitated downwards and drives the supply bottom of pull bar 613, now in the presence of supply extension spring 604, supplies extension spring Airway tube 618 is pulled away from supply sealing gasket 620 by 604 by lock hook 611, supply pull bar 615 so that in the mouth of pipe of airway tube 618 Airspace is produced between supply sealing gasket 620, comes from the fresh air of heating pipe joint 628 through airway tube slide 617 On ring-type air flue enter airway tube 618, and into mask supply.
As shown in figure 3, being installed with lockplate 630 on supply valve body 601, the lockplate 630 is located at diaphragm 605 Lower section, and lock hook 611 be located at lockplate 630 lower section.A lock hole 629, lock hole are provided with lockplate 630 629 position is corresponding with the hook portion of lock hook 611 so that the hook portion of lock hook 611 can hook the lock hole 629 In.The latch hook push rod 603 that can be axially moveable is additionally provided with supply valve body 601, in latch hook push rod 603 and steam supply valve sheet Latch hook push rod back-moving spring 602 is provided between body 601.The front end of latch hook push rod 603 is provided with after shoulders, latch hook push rod 603 End is outer to extend the outside of steam supply valve body 601.When inwardly being promoted from the rear end of latch hook push rod 603 and compress latch hook push rod back-moving spring When 602, the shoulders of latch hook push rod 603 promotes the T-shape subordinate end of lock hook 611, and lock hook 611 deflects and makes locking The hook portion of hook 611 is hooked into the lock hole 629 of lockplate 630.Due to hooking the axial location of lock hook 611 in lock hole 629 Locked, the mouth of pipe of airway tube 618 is close on supply sealing gasket 620, and airway tube 618 can not be pulled away from confession by supply extension spring 604 Airway tube 618 can not be pressed further onto supplying sealing gasket 620 by airtight packing 620, supply lever 613, now aerial respiration Device steam supply valve can be only in off working state.And when beginning to use respirator steam supply valve, first during air-breathing, diaphragm 605 is under The hook end of lock hook 611 is touched in bulging process, and by the hook end pressure of lock hook from lock hole 629, lock hook 611 breaks off relations, and supplies Air valve starts continuous normal work.When stopping using, latch hook push rod 603 is promoted the hook portion of lock hook is hooked locking again In hole 629.
The back board module 2 of positive-pressure air respirator as shown in Figure 4, the back board module 2 includes backboard body 201, should Backboard body 201 is formed by injection molding.Front in Fig. 4 is the gas cylinder mounting surface of back board module, and its reverse side is then and human body What is contacted bears face.The top correspondence shoulder position of backboard body 201 is in the arc being bent outwardly, the bottom of backboard body 201 Waist location and the camber that curves inwardly then are corresponded to, the longitudinal direction of backboard body 201 is broken S-shaped;And backboard body 201 is upper Narrow lower wide structure, so as to meet ergonomic designs' theory, wearing bears more comfortable.
Backboard body 201 uses symmetrical structure, and backboard convex tendon 211, backboard are provided with the symmetrical line position of backboard body 201 Edge convex tendon is also equipped with the edge of body 201.The back position of backboard convex tendon 211 is provided with gas cylinder upper bracket 209, The waist location of backboard convex tendon 211 is provided with gas cylinder undersetting 214.As shown in figure 5, the top surface of gas cylinder undersetting 214 is circular arc Face, the top surface of same gas cylinder upper bracket 209 is also arc surface, and the external cylindrical surface of the circular arc radius surface with gas cylinder body matches, So as to gas cylinder body good contact.Set respectively in the both sides of backboard convex tendon 211 of the shoulder of backboard body 201 and waist connecting position Bottle hand hole 212 is carried, bottle hand hole 212 is carried for through hole, the periphery of the through hole also is provided with hand hole flange, both enhances backboard body 201 strength and stiffness, also enhance the comfort level of hand hole gripping.
As shown in fig. 6, the lower end tip position suit in backboard body 201 is installed with barge bumpar 216, the anticollision Protection pad 216 is made up using flexible rubber of material.The top of the barge bumpar 216 is provided with bottle valve bearing 215, should The bottle valve bearing 215 being arranged in backboard body 201 is used to compressed air bottle bottle valve is fixedly mounted, and causes bottle valve Minimum point still in barge bumpar 216 bottom above, so as to protect bottle valve not to be knocked damage.
System, which is detained, in the both sides of the waist location of backboard body 201 is connected with waistband 203.The two ends of waistband 203 respectively to The both sides extension of backboard body 201, the buckle 213 that can be mutually inserted is respectively arranged with the band edge of waistband 203.In 203 pairs of waistband The waist location of backboard body 201 answered bears face provided with waist cushion 204, and the waist cushion 204 runs through from the waistband of side To the waistband of opposite side, the two ends of waist cushion 204 are connected and installed in by the bustle cingulum 202 on waist cushion 204 On waistband 203.
Shoulder belt 208 is connected with the upper end button system of backboard body 201, the other end of shoulder belt 208, which is then sewed, to be connected to therewith On the extension of correspondence half waistband 203.The shoulder belt 208 has two, and two shoulder belts 208 are located at the both sides of backboard body 201 respectively; Shoulder cushion 207 is equipped with two shoulder belts 208.Waist cushion 204 and shoulder cushion 207 are with fire retardant and flame-retardant polypropylene Constitute.
System, which is detained, in the both sides of the shoulder position of backboard body 201 is connected with gas cylinder fixing band 205, gas cylinder fixing band 205 Two band edges respectively to backboard body 201 both sides extend, one end of gas cylinder fixing band 205 is connected with the connection ring of metal 210, the other end of gas cylinder fixing band 205 is connected with seta hasp 206, to facilitate the system that buckles to gas cylinder to fix.Gas cylinder upper bracket 209 are located on the connecting line of both sides gas cylinder fixing band 205 so that the position of gas cylinder upper bracket 209 and the position of gas cylinder fixing band 205 Put corresponding.
It is above-mentioned that non-limiting technical description, those skilled in the art couple are only made to technical scheme with embodiment Its improvement and equivalent substitution is still fallen within protection scope of the present invention.

Claims (10)

1. a kind of positive-pressure air respirator, including back board module(2)And it is fixed on back board module(2)On gas cylinder assembly (1), the gas cylinder assembly(1)Through depressurizing valve assembly(3)With mask air supply hose(5)Lead to respirator steam supply valve(6), the respirator Steam supply valve(6)It is installed on mask(7)On, it is characterised in that:The respirator steam supply valve(6)Including supply valve body(601), with And pass through steam supply valve top cover(607)It is fixedly installed in supply valve body(601)On diaphragm(605), in the supply valve body (601)On be installed with airway tube slide(617), in airway tube slide(617)On be slidably fitted with airway tube(618), should Airway tube(618)Outer end be provided with supply sealing gasket(620), supply sealing gasket(620)Pass through gasket base(620)It is installed on Airway tube slide(617)On;Airway tube slide(617)On be sealed and installed with heating pipe joint(628), heating pipe joint(628) On air supply channel by supply sealing gasket(620)Lead to airway tube(618);Airway tube(618)The inner with supply pull bar (615)Outer end be connected, the supply pull bar(615)The inner be movably connected on lock hook(611)On, in lock hook(611) With supply valve body(601)Between supply extension spring is installed(604);In supply valve body(601)On be installed with lockplate (630), in the lockplate(630)It is provided with lock hole(629), the lock hook(611)Hook portion and lock hole(629)Position It is corresponding;In supply valve body(601)It is above hinged to have supply lever(613), the supply lever relative with hinge support(613)It is another End is connected to diaphragm(605)On;Supply lever(613)With supply pull bar(615)Outer end in contact be connected;In supply valve body (601)On be also movably set with latch hook push rod(603), latch hook push rod(603)Front end and lock hook(611)It is corresponding, in lock Hook push rod(603)With supply valve body(601)Between be provided with latch hook push rod back-moving spring(602);In the airway tube slide (617)On be supported with bypass valve rod(624), the bypass valve rod(624)Inner and gasket base(621)It is connected, bypasses valve rod (624)Outer end with bypass valve hand wheel(623)It is connected, the bypass valve hand wheel(623)It is rotatably connected in airway tube slide(617)On.
2. positive-pressure air respirator according to claim 1, it is characterised in that:The decompression valve assembly(3)It is installed on Gas cylinder assembly(1)Position of bottleneck, decompression valve assembly(3)Valve body on be provided with pressure-air interface and low-pressure air connects Mouthful, the pressure-air interface and residual gas displaying alarm(9)It is connected;Mask supply is parallel with the low-pressure air interface Flexible pipe(5)Air supply pipe is rescued with him(4).
3. positive-pressure air respirator according to claim 1, it is characterised in that:The mask(7)On numeral is installed Display instrument(8).
4. the positive-pressure air respirator according to claim 1,2 or 3, it is characterised in that:The lock hook(611)On set Mounting hole is equipped with, pull bar is supplied(615)The inner be connected in lock hook(611)Mounting hole in, pull bar stage clip(612)It is supported on Supply pull bar(615)It is inner;The supply lever(613)Pass through lever support(616)It is hinged in supply valve body(601)On; The diaphragm(605)On supply lever seat is installed(610), supply lever(613)It is connected to supply lever seat(610)On.
5. positive-pressure air respirator according to claim 4, it is characterised in that:The airway tube slide(617)On set Ring-type air supply channel is equipped with, sealing ring, the heating pipe joint are respectively arranged with the both sides of the ring-type air supply channel(628)By this Sealing ring is hermetically installed on airway tube slide(617)On, heating pipe joint(628)Air supply channel and airway tube slide (617)On air supply channel be connected.
6. positive-pressure air respirator according to claim 4, it is characterised in that:The bypass valve rod(624)Pass through valve Bar is sealed(627)Hermetically it is supported on airway tube slide(617)On, in bypass valve rod(624)It is upper that bypass stage clip is housed(622); The bypass valve rod(624)With bypass valve hand wheel(623)Between be equipped with positioning ratchet wheel detent mechanism.
7. the positive-pressure air respirator according to claim 1,2 or 3, it is characterised in that:The back board module(2)Including Backboard body(201), in backboard body(201)Symmetrical line position be provided with backboard convex tendon(211), in backboard convex tendon(211)On It is respectively arranged with gas cylinder upper bracket(219)With gas cylinder undersetting(214);In backboard body(201)On be provided with and carry a bottle hand hole (212), backboard body(201)Lower end be installed with barge bumpar(216);In backboard body(201)On be also associated with waist Band(203)With gas cylinder fixing band(205), the waistband(203)Pass through bustle cingulum(202)It is connected with waist cushion(204), in shoulder Band(208)On be connected with shoulder cushion(207);Shoulder belt(208)One end be connected to backboard body(201)Upper end, shoulder belt(208) The other end be connected to waistband(203)On.
8. positive-pressure air respirator according to claim 7, it is characterised in that:The backboard body(201)It is upper to set There is bottle valve bearing(215), the bottle valve bearing(215)Positioned at barge bumpar(216)Top.
9. positive-pressure air respirator according to claim 7, it is characterised in that:The shoulder belt(208)There are two, this two Root shoulder belt(208)It is located at backboard body respectively(201)Both sides;The waistband(203)Band edge respectively to backboard body(201) Both sides extension, in waistband(203)Band edge be equipped with buckle(213);The waist cushion(204)From backboard body(201)One The waistband of side(203)Position insertion is to backboard body(201)Another half waistband(203).
10. positive-pressure air respirator according to claim 7, it is characterised in that:The gas cylinder fixing band(205)Two Band edge is respectively to backboard body(201)Both sides extension, the gas cylinder fixing band(205)One end be connection ring(210), gas cylinder is solid Determine band(205)The other end be connected with seta hasp(206);The gas cylinder upper bracket(209)Position and gas cylinder fixing band (205)Position is corresponding.
CN201710482541.6A 2017-06-22 2017-06-22 Positive-pressure air respirator Pending CN107096142A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109498937A (en) * 2018-12-13 2019-03-22 滨州职业学院 A kind of patient with severe symptoms's nursing oxygen therapy self-checking device
CN109999379A (en) * 2019-04-15 2019-07-12 辽宁思科安全装备制造有限公司 A kind of positive pressure fire-fighting air respirator
CN114470545A (en) * 2022-03-14 2022-05-13 胡加斌 Convenient and reliable fire-fighting self-rescuer

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724482A (en) * 1970-03-05 1973-04-03 Aga Ab Breathing valve
DE2620170A1 (en) * 1976-05-07 1977-11-17 Draegerwerk Ag Lung action controlled air supply respirator - has dosing valve assembly controlled by lever attached to diaphragm
CN2045310U (en) * 1989-01-14 1989-10-04 抚顺煤矿安全仪器厂 Postive pressure type mechanism for positive pressure breathing apparatus
JPH03586A (en) * 1989-03-21 1991-01-07 La Spirotech Ind & Commercial Respiration gas feed device for diver
GB9418728D0 (en) * 1993-09-22 1994-11-02 Racal Health & Safety Ltd Valves
GB0907754D0 (en) * 2009-05-06 2009-06-10 Draeger Safety Uk Ltd Improved harness for breathing apparatus
CN103949019A (en) * 2014-04-29 2014-07-30 抚顺抚运安仪救生装备有限公司 Air respirator with pressure head-up system
CN104127963A (en) * 2014-08-10 2014-11-05 芬安工贸(上海)有限公司 Air breathing device integrating head-up display function and communication function
CN105407976A (en) * 2013-11-29 2016-03-16 Msa技术有限公司 Breathing apparatus with tank alignment system
CN205307641U (en) * 2016-01-25 2016-06-15 陕西亿美万泰科技有限公司 Fire control air respirator
CN205994902U (en) * 2016-08-30 2017-03-08 张丽凤 A kind of intelligent breathing device
CN206026895U (en) * 2016-08-30 2017-03-22 宁波保众应急科技有限公司 Atmospheric pressure status display device and emergency apparatus
CN207137167U (en) * 2017-06-22 2018-03-27 东台市江海救生消防设备有限公司 Positive-pressure air respirator

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724482A (en) * 1970-03-05 1973-04-03 Aga Ab Breathing valve
DE2620170A1 (en) * 1976-05-07 1977-11-17 Draegerwerk Ag Lung action controlled air supply respirator - has dosing valve assembly controlled by lever attached to diaphragm
CN2045310U (en) * 1989-01-14 1989-10-04 抚顺煤矿安全仪器厂 Postive pressure type mechanism for positive pressure breathing apparatus
JPH03586A (en) * 1989-03-21 1991-01-07 La Spirotech Ind & Commercial Respiration gas feed device for diver
GB9418728D0 (en) * 1993-09-22 1994-11-02 Racal Health & Safety Ltd Valves
US5501213A (en) * 1993-09-22 1996-03-26 Racal Health & Safety Limited Gas flow control valves
GB0907754D0 (en) * 2009-05-06 2009-06-10 Draeger Safety Uk Ltd Improved harness for breathing apparatus
CN105407976A (en) * 2013-11-29 2016-03-16 Msa技术有限公司 Breathing apparatus with tank alignment system
CN103949019A (en) * 2014-04-29 2014-07-30 抚顺抚运安仪救生装备有限公司 Air respirator with pressure head-up system
CN104127963A (en) * 2014-08-10 2014-11-05 芬安工贸(上海)有限公司 Air breathing device integrating head-up display function and communication function
CN205307641U (en) * 2016-01-25 2016-06-15 陕西亿美万泰科技有限公司 Fire control air respirator
CN205994902U (en) * 2016-08-30 2017-03-08 张丽凤 A kind of intelligent breathing device
CN206026895U (en) * 2016-08-30 2017-03-22 宁波保众应急科技有限公司 Atmospheric pressure status display device and emergency apparatus
CN207137167U (en) * 2017-06-22 2018-03-27 东台市江海救生消防设备有限公司 Positive-pressure air respirator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109498937A (en) * 2018-12-13 2019-03-22 滨州职业学院 A kind of patient with severe symptoms's nursing oxygen therapy self-checking device
CN109999379A (en) * 2019-04-15 2019-07-12 辽宁思科安全装备制造有限公司 A kind of positive pressure fire-fighting air respirator
CN114470545A (en) * 2022-03-14 2022-05-13 胡加斌 Convenient and reliable fire-fighting self-rescuer

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Application publication date: 20170829