CN108498971B

CN108498971B - Fire-fighting self-rescue respirator with suction nozzle

Info

Publication number: CN108498971B
Application number: CN201810304887.1A
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: 2020-06-09
Anticipated expiration: 2038-04-08
Also published as: CN111714798A; CN108498971A

Abstract

The invention relates to a fire-fighting apparatus. The utility model provides an establish fire control self-rescuer of suction nozzle, includes hood and canister, the canister is equipped with the venthole, its characterized in that, the venthole is equipped with the apron, apron and canister body coupling together, be equipped with on the apron and extend to the gas-supply pipe in the hood. The invention aims to provide a fire-fighting self-rescue respirator with a suction nozzle, which has good smoothness during breathing and solves the problem of poor breathing smoothness of the existing fire-fighting self-rescue respirator.

Description

Fire-fighting self-rescue respirator with suction nozzle

Technical Field

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

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 canister is fixed with the head cover by arranging a hole on the head cover, then penetrating the canister into the hole, and then tightening and binding the hole of the head cover on the canister, and the mode of binding the straps has the defect of consuming a lot of companies during assembly; 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 suction nozzle, which has good smoothness during breathing and solves the problem of poor breathing smoothness of the existing fire-fighting self-rescue respirator.

The second purpose of the invention is to provide a fire-fighting self-rescue respirator with a suction nozzle, which can be assembled quickly, and solves the problem that the existing fire-fighting self-rescue respirator wastes time when a canister is fixed.

The technical problem is solved by the following technical scheme: the utility model provides an establish fire control self-rescuer of suction nozzle, includes hood and canister, the canister is equipped with the venthole, its characterized in that, the venthole is equipped with the apron, apron and canister body coupling together, be equipped with on the apron and extend to the gas-supply pipe in the hood. When in use, the air pipe is extended into the mouth or the nose of a user to realize breathing, thereby improving the through groove property during breathing. So that the user does not easily feel a feeling of gas block.

The invention also comprises a face mask positioned in the head mask, the face mask is provided with a first connecting through hole, the air outlet hole is butted with an air outlet pipe, the air outlet pipe is provided with a plurality of air outlet pipe part elastic flaps which are distributed along the circumferential direction of the air outlet pipe and extend axially, the outer circumferential surface of the air outlet pipe part elastic flaps is provided with air outlet pipe part barbs, the air outlet pipe part elastic flaps are arranged in the first connecting through hole in a penetrating way, the air outlet pipe part barbs are hooked in the first connecting through hole so as to fix the canister and the face mask together, the canister is matched with the face mask to clamp the wall of the head mask so as to fix the canister, the face mask and the head mask together, and the air outlet pipe and the canister. When the mask is used, the mask is covered on the mouth and the nose of a user when the mask is sleeved on the head, and the design of the mask can prevent smoke entering the mask from entering the mouth and the nose of the user, so that the effect of improving safety is achieved. When this technical scheme assembles, only need insert the fixed of first connecting through-hole through the air inlet pipe portion elasticity lamella and can realize canister and hood, consequently assemble through the mode of binding and save time fast than current. The second object of the invention is achieved.

Preferably, the canister, the cover plate and the air outlet pipe are all of plastic structures. The preparation is convenient.

Preferably, the air outlet pipe, the cover plate and the canister are integrally formed together. Can be manufactured together by means of injection molding.

Preferably, the outlet pipe comprises a base section and a limiting section, the outer diameter of the limiting section is smaller than that of the base section, the limiting section is connected to the end face of the base section, an outlet pipe part clamping face is formed between the limiting section and the base section, the elastic flap of the outlet pipe part is arranged at one end, away from the base section, of the limiting section, the limiting section is arranged in the outlet pipe in a penetrating mode, and the outlet pipe part clamping face is matched with the outer end face of the first connecting through hole to clamp the head cover. The reliability in connection can be improved, and the shaking phenomenon is not easy to generate between the canister and the mask.

Preferably, the outer end of the first connecting through hole is provided with a large-diameter section, the outer diameter of the limiting section is larger than the inner diameter of the air outlet pipe, and the limiting section penetrates through the large-diameter section. The reliability at the time of fixation can be further improved.

The mask also comprises an air outlet one-way valve, the mask is provided with a second connecting through hole, an air inlet pipe is arranged at the air inlet end of the air outlet one-way valve, the air inlet pipe is provided with a plurality of air inlet pipe part elastic petals which are distributed along the circumferential direction of the air inlet pipe and extend axially, air inlet pipe part barbs are arranged on the outer circumferential surface of the air inlet pipe part elastic petals, the air inlet pipe part elastic petals penetrate through the second connecting through hole, the air inlet pipe part barbs are hooked in the second connecting through hole to fix the air outlet one-way valve and the mask together, and the air outlet one-way valve is matched with the mask to clamp the wall of the mask so as to fix the air outlet one-way valve. The air outlet one-way valve is convenient to fix, and the fixing reliability between the face mask and the hood can be ensured.

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 canister is convenient to assemble with the hood; the comfort is good when in use, and the phenomenon of air lock is not easy to occur.

Drawings

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

FIG. 2 is an enlarged schematic view of the junction of the canister and the face mask.

Fig. 3 is a partially enlarged schematic view of a portion a of fig. 1.

Fig. 4 is an enlarged schematic view of the connection of the air outlet check valve and the mask.

Fig. 5 is a schematic top view of the neck cover section tightening structure after the annular cavity is removed.

Fig. 6 is a schematic view showing 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 communicating tube 25, the valve 26, the cover 28, the face mask 3, the first connecting through hole 311, the second connecting through hole 312, the door closing spring 33, the canister 4, the cover plate 47, the air outlet 42, the neck covering section tightening structure 5, the annular cavity 51, the guy cable 52, one end 521 of the guy cable, the other end 522 of the guy cable, the guy cable fastening and loosening structure 53, the arc tube 531, the avoiding gap 5311, the slider 532, the flexible inflation rod 533, the flexible inflation rod connected with the inflation and deflation port 5331, the control device 534, the bidirectional air pump 535, the air outlet check valve 6, the air inlet 64, the air inlet tube part elastic flap 65, the air inlet tube part barb 66, the door opening structure 7, the slide tube 71, the closed cavity 711, the open cavity 712, the lever 72, the driving plug 73, the support pin 74, the air outlet tube, An air outlet pipe part elastic flap 84 and an air outlet pipe part barb 85.

Detailed Description

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

Referring to fig. 1, a fire self-rescue respirator with a suction nozzle comprises a hood 2, a 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.

Referring to fig. 1 and 3, a door closing spring 33 and a door opening structure 7 are provided in the housing. 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. 2, the canister 4 is of plastic construction. One end of the canister is provided with an air outlet 42. The air outlet hole is butt jointed with an air outlet pipe 8. A cover plate 47 is arranged in the air outlet hole 42. The cover plate is provided with a gas pipe 48. The cover plate 47 and the outlet pipe 8 are of plastic construction. The cover plate 47, the air outlet pipe and the canister are integrally formed together, and are specifically formed by injection molding. The outlet duct includes base section 81 and spacing section 82. The outer diameter of the limiting section is smaller than that of the base section. The limiting section is connected to the end face of the base section. An outlet pipe part clamping surface 83 is formed between the limiting section and the base section. One end of the limiting section far away from the base section is provided with a plurality of air outlet pipe part elastic flaps 84. The elastic petals of the air outlet pipe part are distributed along the circumferential direction of the air outlet pipe. The elastic flap of the air outlet pipe part extends along the axial direction of the air outlet pipe. The peripheral surface of the elastic valve of the air outlet pipe part is provided with an air outlet pipe part barb 85. The outer end of the first connecting through hole is provided with a large diameter section 315. The outer diameter of the limiting section is larger than the inner diameter of the first connecting through hole. The limiting section is arranged in the large-diameter section in a penetrating mode. The air outlet pipe part elastic valve is arranged in the first connecting through hole in a penetrating way, and the barb of the air outlet pipe part is hooked at the inner end of the first connecting through hole so as to fix the canister 4 and the face mask 3 together. The canister cooperates with the face mask to hold the walls of the hood so that the canister, the face mask and the hood are secured together. The clamping surface of the air outlet pipe part is matched with the outer end surface of the first connecting through hole to clamp the wall of the head cover.

Referring to fig. 4, the outlet check valve 6 is provided with an air inlet 64 and a plurality of inlet tube portion elastic flaps 65 distributed along the circumferential direction of the air inlet and extending in the axial direction. The inlet duct section resilient flap 65 is of plastics construction. The inlet pipe portion elastic flap 65 and the outlet check valve 6 are integrally injection molded. An air inlet pipe barb 66 is provided on the outer peripheral surface of the air inlet pipe portion elastic flap. The air inlet pipe part elastic flap penetrates through the second connecting through hole. The air inlet pipe part barb is hooked at the inner end of the second connecting through hole so as to fix the air outlet one-way valve and the face cover together. The air outlet one-way valve is matched with the face mask to clamp the wall of the hood, so that the air outlet one-way valve, the face mask and the hood are fixed together.

Referring to fig. 5 and 6, 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, 5 and 6, 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. 6, 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 respirator of saving oneself of suction nozzle, includes hood and canister, canister is equipped with the venthole, its characterized in that, the venthole is equipped with the apron, apron and canister body coupling together, be equipped with on the apron and extend to gas-supply pipe in the hood, the hood is equipped with the neck cover of cover on establishing user's neck and establishes the section, the section is established to the neck cover and is flexible structure, the neck cover is established the section and is equipped with neck cover and establishes section tightening structure, neck cover is established section tightening structure and is included to establish annular chamber, cable that section circumference extends along neck cover and tightly loosen the structure and wear to establish the cable in the annular chamber, the cable tightly loosens the structure and includes the arc pipe that extends along annular chamber circumference, be equipped with on the wall of arc pipe along the avoiding gap that the arc pipe extending direction extends, be equipped with two sliders in the arc pipe, be located two sliders along the flexible inflation rod and two sliders of drive that the extension direction of annular The two ends of the inhaul cable are connected with the two sliding blocks in a one-to-one correspondence mode after crossing, and the flexible inflating rod is connected with an inflating and deflating port.

2. A fire-fighting self-rescue respirator with a suction nozzle as defined by claim 1, further comprising a face mask located inside the hood, wherein the face mask is provided with a first connecting hole, the outlet hole is connected to the outlet pipe in a butt joint manner, the outlet pipe is provided with a plurality of outlet pipe part elastic flaps extending along the circumferential direction of the outlet pipe and extending in the axial direction, the outer circumferential surface of the outlet pipe part elastic flaps is provided with outlet pipe part barbs, the outlet pipe part elastic flaps penetrate through the first connecting hole and hook the outlet pipe part barbs in the first connecting hole to fix the canister and the hood together, the canister is matched with the face mask to clamp the wall of the hood so that the canister, the face mask and the hood are fixed together, and the outlet pipe and the canister are integrally connected together.

3. A fire self-rescue respirator with a suction nozzle as defined in claim 2, wherein the canister, the cover plate and the air outlet tube are all of plastic construction.

4. A fire self-rescue respirator with a suction nozzle as defined in claim 2, wherein the air outlet pipe comprises a base section and a limiting section, the outer diameter of the limiting section is smaller than the outer diameter of the base section, the limiting section is connected to the end surface of the base section, an air outlet pipe clamping surface is formed between the limiting section and the base section, the air outlet pipe elastic flap is arranged at one end of the limiting section away from the base section, the limiting section is arranged in the first connecting through hole in a penetrating manner, and the air outlet pipe clamping surface is matched with the outer end surface of the first connecting through hole to clamp the head cover.

5. A fire-fighting self-rescue respirator with a suction nozzle as defined in claim 4, wherein the outer end of the first connecting through hole is provided with a large diameter section, the outer diameter of the limiting section is larger than the inner diameter of the first connecting through hole, and the limiting section is arranged in the large diameter section in a penetrating manner.

6. A fire self-rescue respirator with a suction nozzle as defined in claim 2, wherein a buffer air bag is provided in the head cover, 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 with a suction nozzle as defined in claim 6, wherein the oxygen outlet is communicated with the buffer air bag through a communicating pipe, and a valve is arranged on the communicating pipe.

8. A fire self-rescue respirator with a suction nozzle as defined in claim 1, further comprising a control device, wherein two of the 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 pull cables of the two neck sleeve section tightening structures to be alternately tightened according to a set time interval.