CN111529979B - Positive pressure air respirator convenient to know atmospheric pressure - Google Patents

Positive pressure air respirator convenient to know atmospheric pressure Download PDF

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Publication number
CN111529979B
CN111529979B CN202010384998.5A CN202010384998A CN111529979B CN 111529979 B CN111529979 B CN 111529979B CN 202010384998 A CN202010384998 A CN 202010384998A CN 111529979 B CN111529979 B CN 111529979B
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air
cover plate
pressure
oxygen bag
interface
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CN111529979A (en
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危金兰
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NANTONG RUIQIANG MACHINERY MANUFACTURING Co.,Ltd.
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Nantong Ruiqiang Machinery Manufacturing Co ltd
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00Respiratory apparatus
    • A62B7/02Respiratory apparatus with compressed oxygen or air
    • 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

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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)
  • Emergency Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The invention relates to a fire-fighting apparatus. The utility model provides a positive pressure type air respirator convenient to learn atmospheric pressure, includes headgear and air bottle, the upper end of air bottle is equipped with the valve, be equipped with the gauze mask in the headgear, the gauze mask is equipped with and link up the air inlet of headgear, the gas outlet of pneumatic valve is in the same place with three way connection's first interface connection, three way connection's second interface connection have the manometer, the third interface pass through the hose with the air inlet links together. The invention aims to provide a positive pressure type air respirator convenient for obtaining air pressure, and solves the problem that the air pressure in an air bottle cannot be obtained by the air pressure of the conventional positive pressure type air respirator.

Description

Positive pressure air respirator convenient to know atmospheric pressure
The present application is a divisional application with the name of a positive pressure air respirator convenient for obtaining air pressure on application number 2018103089265, application date 2018, 4 and 9.
Technical Field
The invention relates to fire-fighting equipment, in particular to a positive pressure type air respirator convenient for knowing air pressure.
Background
The positive pressure eliminating air respirator is one isolated respirator with compressed air as breathing air source, and the used compressed air is stored in the air storing bottle, and the air supplying mode is positive pressure, so that when the respirator is worn to breathe, the whole breathing system is always in isolation with the outside and has inside pressure higher than the outside environment pressure. The device is widely applied to the fields of fire fighting, chemical defense, anti-terrorism, outburst treatment, emergency rescue and the like.
With the rapid development of economy and frequent natural disasters in China in recent years, the emergency rescue work also presents a complicated development trend across industries, fields and regions. Although China does a lot of work in the aspects of emergency rescue system construction, accident disaster treatment, prevention and the like, the emergency rescue technology and tactical research and other aspects are in the stage of starting, and especially the development of emergency rescue technology and equipment has a great gap with foreign countries. How to utilize the existing conditions that the existing rescue team in China lacks advanced and matched rescue equipment and the like to furthest exert the effects of the existing equipment of the positive pressure type air respirator and improve the rescue level is the primary task of quickly improving the fighting capacity of the rescue team in a short time. A basic structure of a conventional positive pressure air respirator is disclosed in patent publication No. CN2565465Y, and includes an air bottle, a face mask, and a shoulder strap structure for fixing the air bottle on the back of a user, and a valve is provided at the upper end of the air bottle.
The existing positive pressure air respirator has the following defects: the pressure in the air bottle cannot be known during the use process, and the air can be re-filled after a set time of use for the sake of safety no matter whether the air is used up or not, so the use time cannot be maximized.
Disclosure of Invention
The invention aims to provide a positive pressure type air respirator convenient for obtaining air pressure, and solves the problem that the air pressure in an air bottle cannot be obtained by the air pressure of the conventional positive pressure type air respirator.
The technical problem is solved by the following technical scheme: the utility model provides a positive pressure type air respirator convenient to learn atmospheric pressure, includes headgear and air bottle, the upper end of air bottle is equipped with the valve, be equipped with the gauze mask in the headgear, the gauze mask is equipped with and link up the air inlet of headgear, its characterized in that, the gas outlet of valve is in the same place with three way connection's first interface connection, three way connection's second interface connection have the manometer, the third interface pass through the hose with the air inlet links together. The pressure gauge is arranged, so that the air pressure in the air bottle can be known, the air pressure can be used to be reduced to the extent that the air pressure is not qualified, and the air can be re-filled to achieve the maximization of the use duration.
Preferably, the pressure gauge is connected with the second port of the three-way joint through a hose with the length of more than 60 centimeters. When the pressure gauge is carried on the back, the pressure gauge can be moved to the position observed by a user, the convenience of watching the pressure gauge is improved,
preferably, a buffer air bag is arranged in the head cover, a cover plate folding spring and a suction driving type cover plate opening mechanism are arranged in the mask, an oxygen bag interface communicated with the buffer air bag is arranged in the mask, an oxygen bag interface cover plate is arranged on the oxygen bag interface, the cover plate folding spring is used for driving the oxygen bag interface cover plate to seal the oxygen bag interface, the suction driving type cover plate opening mechanism is used for overcoming the elasticity of the cover plate folding spring to open the oxygen bag interface cover plate, the suction driving type cover plate opening mechanism comprises an air cylinder, a pry bar hinged in the mask and a balance plug located in the air cylinder, one end of the pry bar is connected with the oxygen bag interface cover plate, the other end of the pry bar is connected with the balance plug, and the force arm of the balance plug driving the pry bar to rotate is larger than the force arm of the cover plate folding spring driving, the balance plug divides the cylinder into a sealed cavity and an open cavity communicated with the mask; in an initial state, the air pressure of the opening cavity is greater than or equal to the air pressure of the sealing cavity, and the oxygen bag interface is sealed by the oxygen bag interface cover plate; when the pressure in the opening cavity is reduced due to inspiration, the pressure difference between the sealing cavity and the opening cavity drives the balance plug to move towards the opening cavity, so that the pry bar swings to overcome the elastic force of the cover plate folding spring, and the oxygen bag interface cover plate is opened. The buffering air bag is arranged, and the safety of the head sleeve can be ensured. When in use, the buffer air bag is filled with oxygen and the air pressure in the buffer air bag is more than 1.5 standard atmospheric pressures. Atmospheric pressure in the gauze mask risees when exhaling to make balanced stopper for moving towards sealed chamber, the structure of removal is balanced stopper and removes towards the direction of covering the oxygen export through the prying bar drive oxygen bag interface cover board, avoids the oxygen outflow in the buffering gasbag and leads to extravagantly. When breathing in, the air pressure in the mask is reduced, so that the balance plug moves towards the opening cavity under the action of pressure difference, and the balance plug drives the oxygen bag interface cover plate to open through the pry bar as a result of the movement, so that oxygen in the buffering air bag flows out of the mask to be inhaled by a user, the effect of increasing the oxygen content of the inhaled air is achieved, the discomfort of the user caused by the oxygen deficiency in a fire area is avoided,
preferably, the oxygen bag interface is communicated with the buffer air bag through a communicating pipe, and a manual valve is arranged on the communicating pipe. The oxygen in the buffer air bag can be reused when the user feels oxygen deficiency.
As preferred, the headgear is equipped with the neck section of cover on user's neck, the neck section is flexible structure, the neck section is equipped with the neck section and receives the mechanism that looses, the mechanism that looses is received to the neck section includes that the annular chamber, the rope that extend along neck section circumference unties the fastening mechanism and wear to establish the rope in the annular chamber, the rope unties the fastening mechanism and includes the circular arc pipe that extends along annular chamber circumference, be equipped with the cable removal clearance that extends along circular arc pipe extending direction on the wall of circular arc pipe, be equipped with two connecting blocks in the circular arc pipe, be located two connecting blocks between the rubber gas pole that extend along annular pipe extending direction and the connecting block that two connecting blocks of drive fold the spring, the both ends of rope alternately back one-to-one with two connecting blocks link together, the rubber gas pole is connected with the. The technical scheme with different technical concepts is provided for realizing the closing-in fixation of the lower end of the head sleeve and the neck.
The invention also comprises a control device, the two neck section folding and unfolding mechanisms are distributed along the up-down direction, the air charging and discharging port is connected with an air charging and discharging pump, and the control device controls the ropes of the two neck section folding and unfolding mechanisms to be alternately tightened according to a set time interval. Can avoid the neck injury caused by the rope being tied on the same position of the user's neck for a long time.
Preferably, the inflation and deflation pump is connected with the buffer air bag.
The invention has the following advantages: can conveniently know the atmospheric pressure in the air bottle, can use the atmospheric pressure low go jar gas again when not meeting the requirements to the length maximize when realizing using.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of the invention.
Fig. 2 is a schematic structural diagram of a headgear according to a second embodiment of the invention.
Fig. 3 is a partially enlarged schematic view of fig. 2 at B.
FIG. 4 is a schematic cross-sectional view C-C of FIG. 2.
FIG. 5 is a schematic view showing the connection control relationship between the neck section retraction mechanism and the cushion bladder.
In the figure: the air bottle comprises an air bottle 1, a reinforcing sleeve 11, a head sleeve 2, a head section 21, a neck section 22, a buffer air bag 23, an oxygen bag interface 24, a communication pipe 25, a manual operation 26, an air inlet 27, an oxygen bag interface cover plate 28, a mask 29, a cover plate folding spring 30, a valve 4, a first interface 41, a second interface 42, a third interface 43, a pressure gauge 44, a rubber pipe 45, a three-way joint 46, a hose 47, a neck section collecting and releasing mechanism 5, a suspension ring 51, a rope 52, one end 521 of the rope, the other end 522 of the rope, a rope untieing mechanism 53, an arc pipe 531, a rope moving gap 5311, a connecting block 532, a rubber air rod 533, and an air charging and discharging port 5331 connected with the rubber air rod, a control device 534, an air charging and discharging 535, a one-way valve 6, an air suction driving type cover plate opening mechanism 7, an air cylinder 71, a sealing cavity 711.
Detailed Description
The invention is further described with reference to the following figures and examples.
First embodiment, referring to fig. 1, a positive pressure air respirator for obtaining air pressure includes a head cover 2 and an air bottle 1.
The headgear 2 is provided with an air inlet 27. A mask 29 (see fig. 2) is provided inside the head cover 2. The air inlet is communicated with the inside of the mask.
The upper end and the lower end of the air bottle 1 are provided with reinforcing sleeves 11. The upper end of the air bottle 1 is provided with a valve 4. The outlet of the valve 4 is connected to the first port 41 of the three-way joint 46. The second port 42 of the three-way joint 46 is connected with a pressure gauge 44 through a hose 47. The length of the hose 47 is 60 cm or more. The third port 43 of the three-way joint 46 is connected with the air inlet of the mask through a rubber tube 45.
When in use, the air pressure is observed through the pressure gauge.
The second embodiment is different from the first embodiment in that:
referring to fig. 2, a cover plate folding spring 30 and a suction driving type cover plate opening mechanism 7 are arranged in the mask. An oxygen bag interface 24 communicated with the buffer air bag is arranged in the cover body. The oxygen bag interface is provided with an oxygen bag interface cover plate 28. The cover plate folding spring is used for driving the oxygen bag connector cover plate to seal the oxygen bag connector. The air suction driving type cover plate opening mechanism is used for overcoming the elasticity of the cover plate folding spring to open the oxygen bag interface cover plate. The suction-driven lid opening mechanism includes a cylinder 71, a pry bar 72, and a balanced plug 73 located within the cylinder. A pry bar 72 is hinged within the housing 31 by a hinge pin 74. One end of the pry bar is connected with the oxygen bag interface cover plate, and the other end of the pry bar is connected with the balance plug. The force arm of the balance plug driving pry bar rotating by taking the hinge pin as a shaft is larger than the force arm of the cover plate folding spring driving pry bar rotating by taking the hinge pin as a shaft. The balance plug divides the cylinder into a sealing cavity 711 and an opening cavity 712 communicated with the port cover; in the initial state, the air pressure of the sealing cavity is equal to that of the opening cavity, and the oxygen bag interface cover plate seals the oxygen bag interface 24 under the action of the cover plate folding spring; when the oxygen bag mouth cover plate is used, when the air pressure in the mask is reduced during air suction, the pressure in the opening cavity is reduced, the pressure difference between the sealing cavity and the opening cavity drives the balance plug to move towards the opening cavity, so that the prying bar swings to overcome the elastic force of the cover plate folding spring, and the oxygen bag mouth cover plate is opened. Pressure in the mask rises during expiration so that the pressure in the opening cavity rises, and the pressure difference drive balanced stopper in sealed chamber and opening cavity moves towards sealed chamber thereby makes the crow bar swing and helps apron to close the spring and make on the oxygen bag interface cover board oxygen bag interface of oxygen bag interface cover board more reliable. The oxygen bag interface is communicated with the buffer air bag through a communicating pipe 25. The communicating pipe is provided with a manual valve 26.
Referring to fig. 3 and 4, the cord untying tie-down mechanism 53 includes an arcuate tube 531 extending circumferentially along the annular cavity. The wall of the circular arc pipe is provided with a stay cable moving gap 5311 extending along the extension direction of the circular arc pipe. Two connecting blocks 532 and a rubber air rod 533 which is positioned between the two connecting blocks and extends along the extension direction of the annular pipe are arranged in the circular arc pipe. The two link blocks 532 are connected together by a link block closing spring (not shown) that drives the two link blocks to close. One end 521 of the rope and the other end 522 of the rope are crossed and are connected with the two connecting blocks in a one-to-one correspondence mode. Cord unwinding cinching mechanism 53 also includes control 534. The rubber air rod is connected with an air charging and discharging port 5331. The inflation and deflation ports are in communication with the cushion bladder via an inflation and deflation pump 535.
Referring to fig. 2, 3 and 4, the control device controls the ropes of the two neck section retraction mechanisms to be alternately tightened according to a set time interval, specifically, when the control device is used, the lower rope is firstly tightened to enable the neck section to be contracted and tightened on the neck of a user so as to reduce external air to enter the headgear to stimulate eyes, after a set time period, the upper rope is tightened to enable the neck section to be contracted and tightened, after the upper rope is tightened, the lower rope is loosened, after the time period, the lower rope is tightened to enable the neck section to be contracted and tightened, and after the lower rope is tightened, the upper rope is loosened, and the alternate tightening is circularly realized.
Referring to fig. 4, the process of tightening and loosening the cord is: when in fastening, the inflation rod is inflated through the inflation and deflation pump, and the inflation rod inflates and swells to drive the pair of connecting blocks to be separated, so that a ring enclosed by the ropes is reduced, and fastening is realized; when the rope is loosened, the two-way inflation pump pumps out the gas in the inflation rod, so that the inflation rod is shrunken and loses the supporting function, and the two connecting blocks are folded under the action of the connecting block folding spring to enable the rope to lose the tension force.

Claims (3)

1. A positive pressure air respirator convenient for obtaining air pressure comprises a head cover and an air bottle, wherein a valve is arranged at the upper end of the air bottle, a mask is arranged in the head cover, the mask is provided with an air inlet communicated with the head cover, the positive pressure air respirator is characterized in that an air outlet of the valve is connected with a first interface of a three-way joint, a second interface of the three-way joint is connected with a pressure gauge, a third interface of the three-way joint is connected with the air inlet through a hose, the head cover is provided with a neck section sleeved on the neck of a user, the neck section is of a flexible structure and provided with a neck section collecting and dispersing mechanism, the neck section collecting and dispersing mechanism comprises an annular cavity extending along the circumferential direction of the neck section, a rope untieing mechanism and a rope penetrating through the annular cavity, the rope untieing mechanism comprises an arc tube extending along the circumferential direction of the annular cavity, and a rope moving gap extending along, the two ends of the rope are connected with the two connecting blocks in a one-to-one correspondence mode after crossing, and the rubber air rod is connected with an air charging and discharging port; the mask is internally provided with a buffer air bag, the mask is internally provided with a cover plate folding spring and a suction driving type cover plate opening mechanism, the mask is internally provided with an oxygen bag interface communicated with the buffer air bag, the oxygen bag interface is provided with an oxygen bag interface cover plate, the cover plate folding spring is used for driving the oxygen bag interface cover plate to seal the oxygen bag interface, the suction driving type cover plate opening mechanism is used for overcoming the elasticity of the cover plate folding spring to open the oxygen bag interface cover plate, the suction driving type cover plate opening mechanism comprises a cylinder, a pry bar hinged in the mask and a balance plug positioned in the cylinder, one end of the pry bar is connected with the oxygen bag interface cover plate, the other end of the pry bar is connected with the balance plug, and the force arm of the balance plug driving the pry bar to rotate is larger than the force arm of the cover plate folding spring, the balance plug divides the cylinder into a sealed cavity and an open cavity communicated with the mask; in an initial state, the air pressure of the opening cavity is greater than or equal to the air pressure of the sealing cavity, and the oxygen bag interface is sealed by the oxygen bag interface cover plate; when the pressure in the opening cavity is reduced due to air suction, the pressure difference between the sealing cavity and the opening cavity drives the balance plug to move towards the opening cavity, so that the prying bar swings to overcome the elastic force of the cover plate folding spring to open the oxygen bag interface cover plate; the positive pressure air respirator convenient for obtaining air pressure further comprises a control device, the two neck section folding and unfolding mechanisms are distributed along the vertical direction, the air charging and discharging port is connected with an air charging and discharging pump, and the control device controls the ropes of the two neck section folding and unfolding mechanisms to be alternately fastened according to a set time interval; the inflation and deflation pump is connected with the buffer air bag.
2. The positive pressure air respirator convenient for air pressure to know as claimed in claim 1, wherein the pressure gauge is connected with the second port of the three-way joint through a hose with a length of more than 60 cm.
3. The positive pressure air respirator convenient for obtaining air pressure as claimed in claim 1, wherein the oxygen bag port is communicated with the buffer air bag through a communicating tube, and a manual valve is arranged on the communicating tube.
CN202010384998.5A 2018-04-09 2018-04-09 Positive pressure air respirator convenient to know atmospheric pressure Active CN111529979B (en)

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CN202010384998.5A CN111529979B (en) 2018-04-09 2018-04-09 Positive pressure air respirator convenient to know atmospheric pressure
CN201810308926.5A CN108671436B (en) 2018-04-09 2018-04-09 Positive pressure air respirator convenient to know atmospheric pressure

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Publication number Priority date Publication date Assignee Title
CN111195402A (en) * 2020-02-26 2020-05-26 苏州理想眼科医院有限公司 Positive pressure elastic protective hood

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DE3015760C2 (en) * 1980-04-24 1982-03-25 Drägerwerk AG, 2400 Lübeck Lung-controlled compressed gas breathing apparatus with positive pressure in the breathing mask
CN2158734Y (en) * 1993-01-12 1994-03-16 郭锦文 Air respirator for person to escape from fire disaster
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CN2928137Y (en) * 2006-08-01 2007-08-01 江苏华燕船舶装备有限公司 Air sucking supply valve
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CN111529979A (en) 2020-08-14
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