CN108478955B

CN108478955B - Fire-fighting self-rescue respirator with mask

Info

Publication number: CN108478955B
Application number: CN201810304886.7A
Authority: CN
Inventors: 姜有飞
Original assignee: Zhejiang Daili New Material Technology Co Ltd
Current assignee: ZHEJIANG DAILI NEW MATERIAL TECHNOLOGY CO., LTD.
Priority date: 2018-04-08
Filing date: 2018-04-08
Publication date: 2020-05-08
Anticipated expiration: 2038-04-08
Also published as: CN108478955A; CN111544791A

Abstract

The invention relates to a fire-fighting apparatus. The utility model provides an establish fire control self-rescue respirator of face guard, includes the hood, gives vent to anger check valve and canister, canister is equipped with the venthole, its characterized in that, still including being located the inside face guard of hood, canister's the exit end and the entrance point of the check valve of giving vent to anger all with the inner space intercommunication that the face guard encloses, the face guard includes the cover body and the elastic sealing ring of rigidity, the open end of the cover body is worn to establish in the elastic sealing ring, it is protruding to be equipped with a plurality of connections on the surface of cover body open end, elastic sealing ring is equipped with a plurality of connecting holes, connect protruding one-to-one and wear to establish the connecting hole and prevent elastic sealing ring with the cover body separation, canister and the check valve of giving vent to ange. The invention aims to provide a fire-fighting self-rescue respirator with a mask, which has good smoothness during breathing and solves the problem that the existing fire-fighting self-rescue respirator has poor smoothness during breathing.

Description

Fire-fighting self-rescue respirator with mask

Technical Field

The invention relates to fire-fighting equipment, in particular to a fire-fighting self-rescue respirator with a mask.

Background

A self-demand fire-fighting respirator is a tool which is worn for fire fighting and prevents smoke poisoning, and comprises a head cover and a canister for filtering inhaled air. The prior fire-fighting self-rescue respirator has the following defects: the space inside the hood is too spacious, which causes that the air outside the hood can not be effectively inhaled through the canister when a person inhales, thereby causing the user to feel uncomfortable with a breath-hold feeling when using the respirator.

Disclosure of Invention

The invention aims to provide a fire-fighting self-rescue respirator with a mask, which has good smoothness during breathing and solves the problem that the existing fire-fighting self-rescue respirator has poor smoothness during breathing.

The technical problem is solved by the following technical scheme: the utility model provides an establish fire control self-rescue respirator of face guard, includes the hood, gives vent to anger check valve and canister, canister is equipped with the venthole, its characterized in that, still including being located the inside face guard of hood, canister's the exit end and the entrance point of the check valve of giving vent to anger all with the inner space intercommunication that the face guard encloses, the face guard includes the cover body and the elastic sealing ring of rigidity, the open end of the cover body is worn to establish in the elastic sealing ring, it is protruding to be equipped with a plurality of connections on the surface of cover body open end, elastic sealing ring is equipped with a plurality of connecting holes, connect protruding one-to-one and wear to establish the connecting hole and prevent elastic sealing ring with the cover body separation, canister and the check valve of giving vent to ange. When the respirator hood is used, the hood cover covers the mouth and the nose of a user when the respirator hood is used, so that the effect of reducing the space around the mouth and the nose is achieved, the air pressure at the air outlet end of the canister is reduced by a large amount when the respirator hood inhales, the smoothness of the air outside the hood entering the hood is improved, and the user is not easy to feel closed. The provision of an elastomeric seal enables the mask to be securely fitted to the face. The sealing ring and the cover body are connected in a structure, so that the connection is reliable, the manufacture is convenient, and the independent replacement is convenient.

Preferably, an elastic inner ring is arranged in the elastic sealing ring, an annular accommodating groove is formed between the elastic inner ring and the elastic sealing ring, and the opening end of the cover body penetrates through the annular accommodating groove. The reliability of the connection and sealing between the elastic sealing ring and the cover body can be further improved.

Preferably, the elastic sealing ring elastically abuts against an outer surface of the cover, and the elastic inner ring elastically abuts against an inner surface of the cover. The reliability of the connection and sealing between the elastic sealing ring and the cover body can be further improved.

Preferably, the elastic seal ring elastically abuts on an outer surface of the cover body.

Preferably, the elastic sealing ring is provided with an elastic inner flanging. The sealing reliability between the elastic sealing ring and the face of the user can be further improved.

Preferably, a buffer air bag is arranged in the head cover. Safety through the hood.

Preferably, a door closing spring and a door opening structure are arranged in the face mask, an oxygen output port communicated with the buffer airbag is arranged in the face mask, a cover is arranged at the oxygen output port, the door closing spring is used for driving the cover to close the oxygen output port, the door opening structure is used for overcoming the elasticity of the door closing spring to open the cover, the door opening structure comprises a sliding cylinder, a lever and a driving plug located in the sliding cylinder, one end of the lever is connected with the cover, the other end of the lever is connected with the driving plug, the force arm for driving the lever to rotate by the driving plug is larger than the force arm for driving the lever to rotate by the door closing spring, and the driving plug divides the sliding cylinder into an outer closed cavity and an open cavity communicated with the face mask; in an initial state, the air pressure of the closed cavity and the air pressure of the open cavity are equal, and the cover closes the oxygen output port; when the pressure in the opening cavity is reduced, the pressure difference between the closing cavity and the opening cavity drives the driving plug to move towards the opening cavity so as to enable the lever to swing and overcome the elastic force of the door closing spring to enable the cover to be opened. When the air bag is used, the air bag is filled with oxygen, and the air pressure in the air bag is greater than 1 standard atmospheric pressure, namely higher than the air pressure outside the air bag. When exhaling, the atmospheric pressure in the face guard risees to make the drive stopper move for moving towards the closed chamber, the structure of removal is that the drive stopper passes through lever drive lid and moves towards the direction of covering to the oxygen export, avoids the oxygen outflow in the buffering gasbag and leads to extravagantly. When the respirator inhales, the air pressure in the mask is reduced, so that the driving plug moves towards the open cavity under the action of pressure difference, the moving structure is that the driving plug drives the cover to be opened through the lever, oxygen in the buffering air bag is prevented from flowing out of the hood and being inhaled by a user along with the gas entering the canister, the oxygen content of the inhaled gas is increased, and discomfort of the user due to oxygen deficiency in a fire area is avoided.

Preferably, the oxygen outlet is communicated with the buffering airbag through a communicating pipe, and a valve is arranged on the communicating pipe. When the oxygen supplementing device is used, the buffer air bag is communicated with the oxygen outlet through the switch valve, so that a user can determine whether to supplement oxygen under the condition of environment.

As preferred, the hood is equipped with the neck cover that the cover was established on user's neck and establishes the section, the section is established to the neck cover is flexible structure, the section is established to the neck cover and is equipped with neck cover and establishes section tightening structure, neck cover establishes section tightening structure and includes along the annular chamber that neck cover established section circumference and extend, the cable is tightly loosened the structure and wears to establish the cable in the annular chamber, the cable is tightly loosened the structure and is included along the arc pipe of annular chamber circumference extension, be equipped with the gap of dodging that extends along arc pipe extending direction on the wall of arc pipe, be equipped with two sliders in the arc pipe and lie in the flexible inflation rod that extends along annular pipe extending direction between two sliders, the both ends of cable cross back one-to-one with two sliders link together, flexible inflation rod is connected with the inflation mouth. The lower end of the head cover can be fixed with the neck in a closing-up mode.

The invention also comprises a control device, wherein two neck sleeve section tightening structures are distributed along the vertical direction, the air charging and discharging ports are connected with a bidirectional air pump, and the control device controls the inhaul cables of the two neck sleeve section tightening structures to be alternately tightened according to a set time interval. Can avoid the neck injury caused by the stay cable being tied tightly at the same position on the neck of the user for a long time.

Preferably, the bidirectional air pump is connected with the buffer air bag.

The invention has the following advantages: the comfort is good when in use, and the air-tight phenomenon is not easy to generate; the sealing reliability between the face mask and the face is good.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a schematic top view of the neck cover section tightening structure after the annular cavity is removed.

Fig. 4 is a schematic view of a connection control relationship between the tightening structure of the neck covering section and the cushion airbag.

In the figure: the nose cap 2, the head covering section 21, the neck covering section 22, the buffer airbag 23, the oxygen outlet 24, the cover 28, the communicating tube 25, the valve 26, the face mask 3, the cover 31, the first connecting through hole 311, the second connecting through hole 312, the cover positioning convex ring 313, the connecting protrusion 314, the large diameter section 315, the elastic sealing ring 32, the elastic inner ring 321, the annular containing groove 322, the connecting hole 323, the elastic inward flange 324, the door closing spring 33, the canister 4, the neck covering section tightening structure 5, the annular cavity 51, the cable 52, one end 521 of the cable, the other end 522 of the cable, the cable fastening and loosening structure 53, the arc-shaped tube 531, the avoiding gap 5311, the sliding block 532, the flexible inflation rod 533, and the flexible inflation rod connected with the inflation and deflation port 5331, the control device 534, the two-way air pump 535, the air outlet one-way valve 6, the door opening structure 7, the sliding cylinder 71, the closed cavity 711, the open cavity, And a support pin 74.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1, a fire-fighting self-rescue respirator with a face mask comprises a hood 2, the face mask 3, a canister 4 and an air outlet one-way valve 6.

The hood 2 is provided with a head covering section 21 and a neck covering section 22 covering the neck of the user. The head cover section 21 is provided with a buffer air bag 23. The cushion airbag 23 constitutes an inner surface layer of a portion of the head cover section outside the front side. The neck sleeve section is of a flexible structure. The neck sheathing section is provided with a neck sheathing section tightening structure 5. The neck portion cover is established section tightening structure and is had two and distribute along upper and lower direction. The neck sleeve section tightening structure comprises an annular cavity 51 extending along the circumferential direction of the neck sleeve section, a guy cable fastening and loosening structure and a guy cable 52 arranged in the annular cavity in a penetrating mode. The outlet end of the canister 4 and the inlet end of the air outlet one-way valve 6 are fixed with the mask after passing through the hood 2, thereby realizing the communication of the inner space enclosed by the mask.

Referring to fig. 1 and 2, the face mask 3 is located within the hood. The mask comprises a rigid mask body 31 and an elastic sealing ring 32. The front end of the cover body is provided with a first connecting through hole 311 and a second connecting through hole 312. The outer surface of the open end of the cover body is provided with a cover body positioning collar 313 and a plurality of coupling protrusions 314. The positioning convex ring extends along the circumferential direction of the opening of the cover body. The connecting bulge is positioned on one side of the positioning bulge facing the opening end. The connecting bulges are distributed along the circumferential direction of the opening of the cover body. An elastic inner ring 321 is arranged in the elastic sealing ring. An annular receiving groove 322 is formed between the elastic inner ring and the elastic sealing ring. The elastic sealing ring is provided with a plurality of connecting holes 323 which run through the annular accommodating groove. The opening end of the cover body is arranged in the annular containing groove in a penetrating way. The connecting bulges are correspondingly arranged in the connecting holes in a penetrating way one by one to prevent the elastic sealing ring from separating from the cover body. The elastic sealing ring is elastically abutted against the outer surface of the cover body. The elastic inner ring is elastically abutted against the inner surface of the cover body. The end of the elastic sealing ring far away from the cover body is provided with an elastic inner flanging 324.

The cover body is internally provided with a door closing spring 33 and a door opening structure 7. An oxygen output port 24 communicated with the buffer air bag is arranged in the cover body. The oxygen outlet is provided with a lid 28. The door closing spring is used for driving the cover to close the oxygen output port. The door opening structure is used for overcoming the elasticity of the door closing spring to open the cover. The door opening structure includes a slide cylinder 71, a lever 72, and a drive plug 73 located within the slide cylinder. The lever 72 is hinged within the housing 31 by a support pin 74. One end of the lever is connected with the cover, and the other end of the lever is connected with the driving plug. The force arm of the driving plug driving lever rotating by taking the supporting pin as a shaft is larger than the force arm of the door closing spring driving lever rotating by taking the supporting pin as a shaft. The driving plug divides the sliding cylinder into a closed cavity 711 and an open cavity 712 communicated with the mask; in the initial state, the air pressure of the closed cavity and the air pressure of the open cavity are equal, and the cover closes the oxygen output port 24 under the action of the door closing spring; when the air pressure in the mask is reduced during use when the air is inhaled, so that the pressure in the opening cavity is reduced, the pressure difference between the closed cavity and the opening cavity drives the driving plug to move towards the opening cavity, so that the lever swings to overcome the elastic force of the door closing spring, and the cover is opened. When the mask exhales, the pressure in the mask rises, so that the pressure in the opening cavity rises, and the pressure difference between the closing cavity and the opening cavity drives the driving plug to move towards the closing cavity, so that the lever swings to assist the door closing spring to enable the cover to cover the oxygen output port more reliably. The oxygen outlet is communicated with the buffer air bag through a communicating pipe 25. The communicating pipe is provided with a valve 26. Valve 26 is a manual valve.

Referring to fig. 3 and 4, the cable tie-down release structure 53 includes an arced tube 531 extending circumferentially along the annular cavity. The wall of the arc-shaped pipe is provided with an avoiding gap 5311 extending along the extension direction of the arc-shaped pipe. Two sliders 532 and a flexible inflatable rod 533 which is positioned between the two sliders and extends along the extension direction of the annular tube are arranged in the arc tube. The two sliders 532 are connected together by a slider-closing spring (not shown) that drives the two sliders to close. One end 521 of the cable and the other end 522 of the cable are crossed and then are correspondingly connected with the two sliding blocks. The cable tie-down release 53 also includes a control 534. The flexible inflation rod is connected with an inflation and deflation port 5331. The inflation and deflation ports are communicated with the buffer air bag through a bidirectional air pump 535.

Referring to fig. 1, fig. 3 and fig. 4, the control device controls the guy cables of the two neck sleeve section tightening structures to alternately tighten according to a set time interval, specifically, when in use, the guy cable below is firstly tightened to enable the neck sleeve section tightening to tighten on the neck of a user and reduce the external air entering the head cap to stimulate eyes, after a set time length, the guy cable above is tightened to enable the neck sleeve section tightening, after the guy cable above is tightened, the guy cable below is loosened, after the set time length, the guy cable below is tightened to enable the neck sleeve section tightening, and after the guy cable below is tightened, the guy cable above is loosened, so that alternate tightening is realized in a circulating manner.

Referring to fig. 4, the process of tightening and loosening the cable is: when in fastening, the bidirectional air pump inflates the inflatable rod, the inflatable rod inflates and expands to drive the pair of sliding blocks to be separated, so that a ring enclosed by the inhaul cable is reduced, and fastening is realized; when the pull cable is loosened, the gas in the inflation rod is pumped out by the bidirectional inflation pump, so that the inflation rod is deflated and loses the supporting function, and the two sliders are folded under the action of the slider folding spring, so that the pull cable loses the tension force, and the release is realized.

Claims

1. The utility model provides an establish fire control self-rescue respirator of face guard, includes the hood, gives vent to anger check valve and canister, canister is equipped with the venthole, its characterized in that still includes and is located the inside face guard of hood, canister's the exit end and the entrance point of the check valve of giving vent to anger all with the inner space intercommunication that the face guard encloses, the face guard includes rigid cover body and elastic sealing ring, the open end of the cover body is worn to establish in the elastic sealing ring, be equipped with a plurality of connection archs on the surface of cover body open end, elastic sealing ring is equipped with a plurality of connecting holes, connect protruding one-to-one ground and wear to establish the connecting hole and prevent elastic sealing ring with the cover body separation, canister and the check valve of giving vent to anger all connects on the cover body, the hood is equipped with the neck cover that the cover is established the section on user, the section is established to the neck cover and is equipped with the neck cover and establish section tightening structure, the neck cover is established section tightening structure and is included and establish the ring chamber that section circumference extends, the cable and fasten the loosening structure and wear to establish the cable in the ring chamber along the neck cover, the cable is fastened the loosening structure and is included along the arc pipe that ring chamber circumference extends, be equipped with on the wall of arc pipe along the dodging gap that the arc pipe extending direction extends, be equipped with two sliders in the arc pipe, be located the flexible inflation rod that extends along ring pipe extending direction between two sliders and drive the slider that two sliders fold the spring, the both ends of cable fold the spring in the back one-to-one alternately with two sliders link together, flexible inflation rod is connected with the inflation mouth.

2. A fire-fighting self-rescue respirator provided with a mask as claimed in claim 1, wherein an elastic inner ring is arranged in the elastic sealing ring, an annular accommodating groove is formed between the elastic inner ring and the elastic sealing ring, and the open end of the mask body is arranged in the annular accommodating groove in a penetrating manner.

3. A self-rescue respirator as defined in claim 2, wherein the resilient sealing ring resiliently abuts against the outer surface of the mask body and the resilient inner ring resiliently abuts against the inner surface of the mask body.

4. A facemask firefighting self-rescue respirator as set forth in claim 1 wherein the resilient sealing ring resiliently abuts against an outer surface of the mask body.

5. A fire self-rescue respirator provided with a mask according to claim 1, wherein the elastic sealing ring is provided with an elastic inner cuff.

6. A fire self-rescue respirator provided with a mask according to claim 1, wherein a buffer air bag is arranged in the hood, a door closing spring and a door opening structure are arranged in the face shield, an oxygen output port communicated with the buffer air bag is arranged in the face shield, the oxygen outlet is provided with a cover, the door closing spring is used for driving the cover to close the oxygen outlet, the door opening structure is used for overcoming the elasticity of the door closing spring to open the cover, the door opening structure comprises a sliding cylinder, a lever and a driving plug positioned in the sliding cylinder, one end of the lever is connected with the cover, the other end of the lever is connected with the driving plug, the force arm of the driving plug for driving the lever to rotate is larger than that of the closing spring for driving the lever to rotate, and the driving plug divides the sliding cylinder into a closed cavity and an open cavity communicated with the mask; in an initial state, the air pressure of the closed cavity and the air pressure of the open cavity are equal, and the cover closes the oxygen output port; when the pressure in the opening cavity is reduced, the pressure difference between the closing cavity and the opening cavity drives the driving plug to move towards the opening cavity so as to enable the lever to swing and overcome the elastic force of the door closing spring to enable the cover to be opened.

7. A fire-fighting self-rescue respirator provided with a mask as claimed in claim 6, wherein the oxygen outlet is communicated with the buffering airbag through a communicating pipe, and a valve is arranged on the communicating pipe.

8. A fire self-rescue respirator provided with a mask as claimed in claim 1, further comprising a control device, wherein two neck sleeve section tightening structures are distributed along the vertical direction, the air inflation and deflation port is connected with a bidirectional air pump, and the control device controls the guy cables of the two neck sleeve section tightening structures to be alternately tightened according to a set time interval.