CN111714797A - Clamping fixed type fire-fighting self-rescue respirator with iron shell canister - Google Patents

Abstract

The invention relates to a fire-fighting apparatus. The utility model provides an establish fixed fire control self-rescue respirator of centre gripping of iron-clad canister, includes hood, face guard, establishes the metal can shell and the go-between of gas outlet hole, and the one end of go-between is equipped with a plurality of first elasticity lamellas, the other end is equipped with a plurality of second elasticity lamellas, is equipped with first barb on the first elasticity lamella, and first elasticity lamella is worn to establish in first connection hole and first barb hookup is in first connection hole and fixed being in the same place go-between and face guard, is equipped with the second barb on the outer peripheral face of second elasticity lamella, second elasticity lamella is worn to establish in the gas outlet hole and second barb hookup in the gas outlet hole and will go-between and can shell are fixed being in the. The invention aims to provide a clamping fixed type fire-fighting self-rescue respirator with an iron shell canister, which has good smoothness during breathing and can be assembled quickly, and solves the problems that the conventional fire-fighting self-rescue respirator has poor breathing smoothness and wastes time during canister fixing.

Description

Clamping fixed type fire-fighting self-rescue respirator with iron shell canister

The application is a divisional application with the name of 'clamping fixed fire-fighting self-rescue respirator with iron shell canister' of application number 2018103048693, application date 2018, 04 and 08.

Technical Field

The invention relates to fire-fighting equipment, in particular to a clamping fixed type fire-fighting self-rescue respirator with an iron shell canister.

Background

The respirator is worn and prevent the apparatus of smoke poisoning when being used for carrying out the fire control effect to the fire control from asking the respirator, including hood and canister, canister is used for filtering inspiratory air, and the pot shell of current canister is metal construction, through seting up the hole on the hood, then wear to establish canister in the hole then tighten up the hole of hood and tie up the fixed of realizing canister with the hood on the pot shell, and the mode of bandage consumes man-hour many when the assembly not enough.

Disclosure of Invention

The invention aims to provide a clamping fixed type fire-fighting self-rescue respirator with an iron shell canister, which has good smoothness during breathing and can be assembled quickly, and solves the problems that the conventional fire-fighting self-rescue respirator has poor breathing smoothness and wastes time during canister fixing.

The technical problem is solved by the following technical scheme: the utility model provides an establish fixed fire control self-rescue respirator of centre gripping of iron-clad canister, includes hood and canister, canister includes the pot shell, the pot shell is metal construction, the pot shell is equipped with the venthole, its characterized in that still includes the go-between and is located the inside face guard of hood, the face guard is equipped with first connect the via hole, the one end of go-between is equipped with a plurality of first elasticity lamellas that distribute axial extension along go-between circumference, the other end is equipped with a plurality of second elasticity lamellas that distribute axial extension along go-between circumference, be equipped with first barb on the outer peripheral face of first elasticity lamella, first elasticity lamella is worn to establish in the first connect the via hole and first barb hookup in first connect the via hole and with go-between and face guard are fixed together, go-between cooperation the face guard centre gripping is lived the wall of hood and is made go-between, face guard and hood three together fixed, and the peripheral surface of the second elastic flap is provided with a second barb, the second elastic flap penetrates through the air outlet, and the second barb is hooked in the air outlet so as to fix the connecting ring and the tank shell together. 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. When the technical scheme is assembled, the canister and the hood can be fixed only by inserting the first elastic valve into the first connecting through hole, so that the time is saved compared with the conventional method for assembling in a binding mode.

Preferably, the canister and the connection ring are of plastic construction. The preparation is convenient.

Preferably, the connecting ring 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, a first clamping surface is formed between the limiting section and the base section, the first elastic flap is arranged at one end, away from the base section, of the limiting section, the limiting section is arranged in the first connecting through hole in a penetrating mode, and the first clamping surface is matched with the outer end face of the first connecting through hole to clamp the head cover. The reliability of connection can be improved, and the connecting ring and the face mask are not easy to shake.

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 first connecting through hole, and the limiting section penetrates through the large-diameter section. The reliability at the time of fixation can be further improved.

Preferably, a sealing ring is arranged between the connecting ring and the tank shell. The reliable sealing connection between the shell and the connecting ring can be realized.

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 with the metal shell and the head cover can be conveniently assembled; 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 a schematic top view of the neck cover section tightening structure after the annular cavity is removed.

Fig. 5 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 gas-liquid separation device comprises a hood 2, a head sleeving section 21, a neck sleeving section 22, a buffer airbag 23, an oxygen output port 24, a cover 28, a communicating pipe 25, a valve 26, a mask 3, a door closing spring 33, a canister 4, a tank shell 41, a gas outlet 42, a neck sleeving section tightening structure 5, an annular cavity 51, a guy cable 52, one end 521 of the guy cable, the other end 522 of the guy cable, a guy cable fastening and loosening structure 53, an arc-shaped pipe 531, a avoiding gap 5311, a sliding block 532, a flexible inflating rod 533, and a flexible inflating rod connected with a charging and discharging port 5331, a control device 534, a bidirectional gas pump 535, a gas outlet one-way valve 6, a door opening structure 7, a sliding cylinder 71, a closed cavity 711, an open cavity 712, a lever 72, a driving plug 73, a supporting pin 74, a connecting ring 8, a base section 81, a limiting section 82.

Detailed Description

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

Referring to fig. 1, a clamping fixed type fire-fighting self-rescue respirator with an iron shell canister 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. The face mask 3 is located within the hood. The front end of the face mask is provided with a first connection through hole 311 and a second connection through hole 312. The inlet end of the air outlet one-way valve is connected in the second connecting through hole. The canister 4 comprises a canister shell 41 and a connection ring 8. The can 41 is of metal construction. The tank shell is provided with an air outlet 42. The connection ring 8 is a plastic part. One end of the connecting ring is connected in the first connecting through hole, and the other end of the connecting ring is connected in the air outlet hole.

Referring to fig. 1 and 3, a door closing spring 33 and a door opening structure 7 are provided in the mask. 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 attachment ring includes a base section 81 and a stopper 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 one end of the base section. A first clamping surface 83 is formed between the stop section and the base section. One end of the limiting section far away from the base section is provided with a plurality of first elastic lobes 84. The first resilient lobes are circumferentially distributed along the connecting ring. The first resilient flap extends axially along the attachment ring. A first barb 85 is disposed on the outer peripheral surface of the first resilient flap. The outer end of the first connecting through hole 311 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 first elastic flap is arranged in the first connecting through hole in a penetrating way, and the first barb is hooked at the inner end of the first connecting through hole so as to fix the connecting ring and the face mask 3 together. The connecting ring is matched with the face mask to clamp the wall of the head mask, so that the connecting ring, the face mask and the head mask are fixed together in a sealing mode. The first clamping surface is matched with the outer end surface of the first connecting through hole to clamp the wall of the head cover. The end face of the other end of the connecting ring is provided with a sealing ring mounting groove 811 and a plurality of second elastic flaps 86 which are distributed along the circumferential direction of the connecting ring and extend axially. A second barb 87 is provided on the outer peripheral surface of the second resilient flap. The second resilient flap is disposed through the air outlet 42 and the second barb is hooked into the air outlet to secure the connecting ring and the shell 42 together. A seal ring 88 is provided in the seal ring mounting groove 811. A sealing ring 88 sealingly connects the connecting ring and the tank shell together.

Referring to fig. 4 and 5, 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, 4 and 5, 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. 5, 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 (6)

1. The utility model provides an establish fixed fire control self-rescue respirator of centre gripping of iron-clad canister, includes hood and canister, canister includes the pot shell, the pot shell is metal construction, the pot shell is equipped with the venthole, its characterized in that still includes the go-between and is located the inside face guard of hood, the face guard is equipped with first connect the via hole, the one end of go-between is equipped with a plurality of first elasticity lamellas that distribute axial extension along go-between circumference, the other end is equipped with a plurality of second elasticity lamellas that distribute axial extension along go-between circumference, be equipped with first barb on the outer peripheral face of first elasticity lamella, first elasticity lamella is worn to establish in the first connect the via hole and first barb hookup in first connect the via hole and with go-between and face guard are fixed together, go-between cooperation the face guard centre gripping is lived the wall of hood and is made go-between, face guard and hood three together fixed, the peripheral surface of the second elastic flap is provided with a second barb, the second elastic flap is arranged in the air outlet in a penetrating way, the second barb is hooked in the air outlet to fix the connecting ring and the tank shell together, the head cover is provided with a neck cover setting section which is sleeved on the neck of a user, the neck cover setting section is of a flexible structure, the neck cover setting section is provided with a neck cover setting section tightening structure, the neck cover setting section tightening structure comprises an annular cavity extending along the circumferential direction of the neck cover setting section, a guy cable fastening loosening structure and a guy cable penetrating in the annular cavity, the guy cable fastening loosening structure comprises an arc-shaped pipe extending along the circumferential direction of the annular cavity, the wall of the arc-shaped pipe is provided with an avoiding gap extending along the extending direction of the arc-shaped pipe, two slide blocks, a flexible inflating rod extending along the extending direction of the annular pipe and a slide block folding spring driving the two slide blocks to fold are, the two ends of the inhaul cable are connected with the two sliding blocks in a one-to-one correspondence way after being crossed, the flexible inflatable rod is connected with an inflation and deflation port, a buffering 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 buffering 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; establish the fixed fire control self-rescue respirator of centre gripping of iron-clad canister and still include controlling means, the section tightening structure is established to the neck cover has two and distributes along upper and lower direction, the inflation and deflation port is connected with two-way air pump, controlling means control two neck cover establish section tightening structure's cable and fasten according to the time interval of setting for in turn, two-way air pump with the buffering gasbag links together.

2. The fixed fire-fighting self-rescue respirator with an iron-shell canister as claimed in claim 1, wherein the connecting rings are all of plastic construction.

3. The fixed fire-fighting self-rescue respirator with the iron shell canister as claimed in claim 1, wherein the connecting ring 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, a first clamping face is formed between the limiting section and the base section, the first elastic flap is arranged at one end of the limiting section, which is far away from the base section, the limiting section is arranged in the first connecting hole in a penetrating manner, and the first clamping face is matched with the outer end face of the first connecting hole to clamp the head cover.

4. The fixed fire-fighting self-rescue respirator with the iron shell canister as claimed in claim 3, 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.

5. The fixed fire-fighting self-rescue respirator with the canister made of the iron shell as claimed in claim 1, wherein a sealing ring is arranged between the connecting ring and the canister shell.

6. The fixed fire-fighting self-rescue respirator with the iron shell canister as claimed in claim 1, wherein the oxygen outlet is communicated with the buffer airbag through a communicating pipe, and a valve is arranged on the communicating pipe.

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