CN108498970B

CN108498970B - Fire-fighting self-rescue respirator with air outlet one-way valve fixed in clamping manner

Info

Publication number: CN108498970B
Application number: CN201810304872.5A
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: 2020-06-30
Anticipated expiration: 2038-04-08
Also published as: CN111714796A; CN108498970A

Abstract

The invention relates to a fire-fighting apparatus. The utility model provides a fixed fire control self-rescue respirator of check valve of giving vent to anger of joint, includes hood, canister, face guard and the check valve of giving vent to anger, the check valve of giving vent to anger is including the valve casing that is equipped with the air inlet, be equipped with a plurality of air inlet pipe portion elasticity lamellas that distribute the axial along the air inlet circumference on the valve casing, be equipped with air inlet pipe portion barb on the outer peripheral face of air inlet pipe portion elasticity lamella, air inlet pipe portion elasticity lamella is worn to establish in the second connection through hole and air inlet pipe portion barb hookup in the second connection through hole and will give vent to anger check valve and face guard are fixed together, the check valve cooperation of giving vent to anger the face guard centre gripping the wall of hood. The invention aims to provide a fire-fighting self-rescue respirator with a clamping and fixing air outlet one-way valve, and solves the problem that the air outlet one-way valve can move after being solidified through bonding and fixing, so that the time consumption is long.

Description

Fire-fighting self-rescue respirator with air outlet one-way valve fixed in clamping manner

Technical Field

The invention relates to fire-fighting equipment, in particular to a fire-fighting self-rescue respirator for clamping and fixing an air outlet one-way valve.

Background

The self-seeking fire fighting respirator is a tool which is worn during fire fighting and prevents smoke poisoning, and comprises a hood, an air outlet one-way valve and a canister, wherein the canister is used for filtering inhaled air. The prior fire-fighting self-rescue respirator has the following defects: the air outlet one-way valve is fixed with the head cover in a bonding mode, and the air outlet one-way valve can move after glue is solidified during fixing, so that the required time is long.

Disclosure of Invention

The invention aims to provide a fire-fighting self-rescue respirator with a clamping and fixing air outlet one-way valve, and solves the problem that the air outlet one-way valve can move after being solidified through bonding and fixing, so that the time consumption is long.

The technical problem is solved by the following technical scheme: the utility model provides a fixed fire control self-rescue respirator of check valve of giving vent to anger of joint, 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, the face guard is equipped with first connect the via hole and second connect the via hole, canister's the end of going out is worn to establish in the first connect the via hole and together fixed with the face guard, the check valve of giving vent to anger is including the valve casing that is equipped with the air inlet, be equipped with a plurality of air inlet pipe portion elastic lamella that extend along air inlet circumference distribution axial on the valve casing, be equipped with air inlet pipe portion barb on the outer peripheral face of air inlet pipe portion elastic lamella, air inlet pipe portion elastic lamella is worn to establish in the second connect the via hole and air inlet pipe portion barb articulate in the second connect the via hole and will give vent to anger check valve and face guard are together fixed, the check valve, The face mask and the head cover are fixed together. The air outlet one-way valve is convenient to fix, and the fixing reliability between the mask and the hood can be improved.

As preferred, the check valve of giving vent to anger is including being equipped with valve casing, diaphragm and diaphragm mount, and the valve casing is the tubular structure, and the one end opening of valve casing constitutes the air inlet, the opening of the other end constitutes the check valve gas outlet, is equipped with sealed step and diaphragm support frame in the valve casing, is equipped with the diaphragm fixed pin on the diaphragm support frame, and the diaphragm cover is established on diaphragm support fixed pin and is shelved on the diaphragm support frame, and the edge butt of diaphragm realizes sealedly on sealed step, and the diaphragm mount includes annular retainer plate and pressing cover, and annular retainer plate encircles and is connected together with pressing the cover at the periphery of pressing the cover and through a plurality of connection pieces, and annular retainer plate wears to establish in the casing and is fixed with the valve casing, presses the ways to.

Preferably, the annular retainer ring is secured to the valve housing with a tight fit.

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 air outlet one-way valve is convenient to assemble with the head cover.

Drawings

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

Fig. 2 is an enlarged schematic view of the junction of the outlet check valve and the 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 mask 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 neck sleeving section tightening structure 5, an annular cavity 51, a pull cable 52, one end 521 of the pull cable, the other end 522 of the pull cable, a pull cable fastening and loosening structure 53, an arc pipe 531, an avoiding gap 5311, a sliding block 532, a flexible inflation rod 533, and an inflation and deflation port 5331 connected with the flexible inflation rod, a control device 534, a two-way air pump 535, an air outlet one-way valve 6, a valve shell 61, a diaphragm 62, a diaphragm fixing frame 63, an annular fixing ring 631, a pressing sleeve 632, a connecting sheet 633, an air inlet 64, an air inlet pipe part elastic flap 65, an air inlet pipe part barb 66, a sealing step 67, a diaphragm supporting frame 68, a diaphragm fixing pin 681, a, A drive plug 73, 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 fixed air outlet one-way valve in a clamping manner 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 mask is provided with a first connection through hole 311 and a second connection through hole 312. The outlet end of the canister is inserted and fixed in the first connecting through 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, outlet check valve 6 includes a valve housing 61 provided with an inlet port, a diaphragm 62, and a diaphragm holder 63. The valve housing 61 is of tubular construction. The valve housing has an opening at one end forming an air inlet 64 and an opening at the other end forming an air outlet of the check valve. The valve casing is made of plastic. The valve housing is provided with a plurality of axially extending inlet duct section spring flaps 65 distributed circumferentially along the inlet. The inlet duct section resilient flap 65 is of plastics construction. The intake pipe portion elastic piece 65 and the valve housing 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 hooks at the inner end of the second connecting through hole 312 to fix the air outlet one-way valve and the mask 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. A sealing step 67 and a diaphragm support 68 are provided in the valve housing 61. The diaphragm support frame is provided with a diaphragm fixing pin 681. The diaphragm 62 is sleeved on the diaphragm support fixing pin and rests on the diaphragm support frame. When in air suction, the diaphragm moves towards the air inlet end under the action of pressure difference, so that the edge of the diaphragm abuts against the sealing step to realize sealing. The diaphragm mount 63 includes an annular fixing ring 631 and a pressing sleeve 632. The annular fixing ring surrounds the periphery of the pressing sleeve and is connected with the pressing sleeve through a plurality of connecting sheets 633. The annular retainer ring is inserted into the valve housing 61 in a tight fit to achieve fixation. The pressing sleeve is sleeved on the diaphragm fixing pin to press the diaphragm. The direction of the raw material air inlet of the edge groove of the membrane is turned over during expiration, so that opening is realized.

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

1. The utility model provides a fixed fire control self-rescue respirator of check valve of giving vent to anger of joint, 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, the face guard is equipped with first connect the via hole and second connect the via hole, canister's the end of going out is worn to establish in the first connect the via hole and together fixed with the face guard, the check valve of giving vent to anger is including the valve casing that is equipped with the air inlet, be equipped with a plurality of air inlet pipe portion elastic lamella that extend along air inlet circumference distribution axial on the valve casing, be equipped with air inlet pipe portion barb on the outer peripheral face of air inlet pipe portion elastic lamella, air inlet pipe portion elastic lamella is worn to establish in the second connect the via hole and air inlet pipe portion barb articulate in the second connect the via hole and will give vent to anger check valve and face guard are together fixed, the check valve, The face mask and the head mask are fixed together, the head mask is provided with a neck sleeve section which is sleeved on the neck of a user, the neck part sheathing section is of a flexible structure, the neck part sheathing section is provided with a neck part sheathing section tightening structure, the neck sleeve section tightening structure comprises an annular cavity extending along the circumferential direction of the neck sleeve section, a guy cable fastening and loosening structure and a guy cable penetrating through the annular cavity, the guy cable fastening and loosening structure comprises an arc-shaped pipe extending along the circumferential direction of the annular cavity, an avoiding gap extending along the extending direction of the arc-shaped pipe is arranged on the wall of the arc-shaped pipe, two slide blocks, a flexible inflatable rod which is positioned between the two slide blocks and extends along the extension direction of the annular pipe and a slide block folding spring which drives the two slide blocks to fold are arranged in the arc-shaped pipe, 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. The fire-fighting self-rescue respirator of the fixed check valve of giving vent to anger of joint according to claim 1, characterized in that, the check valve of giving vent to anger still includes diaphragm and diaphragm mount, the valve casing is tubular structure, the one end opening of valve casing constitutes the air inlet, the opening of the other end constitutes the check valve gas outlet, be equipped with sealed step and diaphragm support frame in the valve casing, be equipped with the diaphragm fixed pin on the diaphragm support frame, the diaphragm cover is established on diaphragm support fixed pin and is shelved on the diaphragm support frame, the edge butt of diaphragm realizes sealedly on sealed step, the diaphragm mount includes annular retainer plate and pressing cover, annular retainer plate encircles and presses the periphery of cover and is in the same place through a plurality of connection pieces with pressing the cover, annular retainer plate wears to establish in the casing and is fixed with the valve casing, pressing the cover and establishing on.

3. A fire self-rescue respirator that is secured to the outlet check valve by clamping as claimed in claim 2, wherein the annular retainer ring is secured to the valve housing by a tight fit.

4. A fire self-rescue respirator as claimed in claim 1 in which a cushioning bladder is provided in the hood.

5. A fire-fighting self-rescue respirator with a clamping fixed air outlet one-way valve according to claim 4, 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.

6. A fire-fighting self-rescue respirator with a clamped and fixed air outlet one-way valve according to claim 5, wherein the oxygen outlet is communicated with the buffering air bag through a communicating pipe, and a valve is arranged on the communicating pipe.

7. The fire-fighting self-rescue respirator with the air outlet check valve clamped and fixed as claimed in claim 1, further comprising a control device, wherein the two neck sleeve section tightening structures are distributed along the vertical direction, the air charging and discharging 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.