CN108514698B

CN108514698B - Fire-fighting self-rescue respirator provided with canister with thickened grid plate

Info

Publication number: CN108514698B
Application number: CN201810304873.XA
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: CN108514698A; CN111544793A

Abstract

The invention relates to a fire-fighting apparatus. The utility model provides an establish fire control self-rescuer of canister that has thickening grid plate, includes hood, the check valve of giving vent to anger and canister, canister is equipped with the venthole, be equipped with grid plate in the canister, its characterized in that, the thickness at the position that grid plate is equipped with grid hole is by middle to the edge attenuation gradually, grid plate includes circular frame, be equipped with a plurality of horizontal muscle and a plurality of muscle of indulging in the circular frame, horizontal muscle and indulge the muscle and alternately form grid hole. The invention aims to provide a fire-fighting self-rescue respirator with a grid plate and a poison filtering tank with a thickened grid plate, which has high strength and solves the problem of poor strength of the grid plate of the poison filtering tank of the existing fire-fighting self-rescue respirator.

Description

Fire-fighting self-rescue respirator provided with canister with thickened grid plate

Technical Field

The invention relates to fire-fighting equipment, in particular to a fire-fighting self-rescue respirator with a poison filtering tank with a thickened grid plate.

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 grid plate for supporting the filter material in the canister is of a metal sheet structure and is easy to deform, so that the applicant of the invention provides an auxiliary support for the grid plate by arranging a support column.

Disclosure of Invention

The invention aims to provide a fire-fighting self-rescue respirator with a grid plate and a poison filtering tank with a thickened grid plate, which has high strength and solves the problem of poor strength of the grid plate of the poison filtering tank of the existing fire-fighting self-rescue respirator.

The technical problem is solved by the following technical scheme: the utility model provides an establish fire control self-rescuer of canister that has thickening grid plate, includes hood, the check valve of giving vent to anger and canister, canister is equipped with the venthole, be equipped with grid plate in the canister, its characterized in that, the thickness at the position that grid plate is equipped with grid hole is by middle to the edge attenuation gradually, grid plate includes circular frame, be equipped with a plurality of horizontal muscle and a plurality of muscle of indulging in the circular frame, horizontal muscle and indulge the muscle and alternately form grid hole. The structural strength of the grid plate can be improved in a mode that the material consumption and the appearance volume are small.

Preferably, the transverse ribs and the longitudinal ribs are distributed and staggered along the axial direction of the circular frame. The material consumption can be further reduced.

Preferably, one side of the transverse rib facing the longitudinal rib and one side of the longitudinal rib facing the transverse rib are located on the same plane. The convenience of die sinking of the die can be improved when the die is manufactured in an injection molding mode.

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

Preferably, the respirator further comprises a face mask positioned in the head mask, the outlet end of the canister and the inlet end of the air outlet one-way valve both penetrate through the back of the head mask and are fixed together with the face mask and are communicated with an inner space surrounded by the face mask, a door closing spring and a door opening structure are arranged in the face mask, an oxygen outlet communicated with the buffer air bag is arranged in the face mask, a cover is arranged at the oxygen outlet, 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, and the force arm for driving the lever to rotate is larger than the force arm for driving the lever, the driving plug divides the sliding barrel 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. 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 grid plate has good structural strength.

Drawings

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

FIG. 2 is an enlarged view of the junction of the grid plate and the canister.

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 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 door closing spring 33, the canister 4, the grid plate 41, the circular frame 411, the transverse rib 412, the side 4121 of the transverse rib facing the longitudinal rib, the longitudinal rib 413, the side 4131 of the longitudinal rib facing the transverse rib, the grid hole 414, the frame convex ring 415, the air outlet hole 42, the front shell 43, the front shell pressing ring 431, the rear shell 44, the first convex ring 441, the second convex ring 442, the rear shell clamping groove 443, the filter paper 45, 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-shaped tube 531, the avoiding gap 5311, the slider 532, the flexible air inflation rod 533, the flexible air inflation rod connected with the air pump 5331, the control device 534, the two-, A slide cylinder 71, a closed cavity 711, an open cavity 712, a lever 72, a drive plug 73, 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 canister with a thickened grid plate 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 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 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 canister 4 is of plastic construction. A grid plate 41 is arranged in the canister. The canister 4 comprises a front housing 43 and a rear housing 44. The front shell is circular. A front case pressing ring 431 is provided on the inner surface of the front case 43. The front shell pressing ring extends along the circumferential direction of the front shell. The rear shell is circular. The front end surface of the rear shell is provided with a first convex ring 441. The first cam element rear shell extends circumferentially. The inner surface of the rear shell is convex forward to form a second convex ring 442. A rear housing portion slot 443 is formed between the first and second male rings. The grid plate 41 comprises a circular rim 411. A plurality of transverse ribs 412 and a plurality of longitudinal ribs 413 are arranged in the circular frame. The transverse ribs and the longitudinal ribs intersect to form grid holes 414. The side 4121 of the transverse rib facing the longitudinal rib and the side 4131 of the longitudinal rib facing the transverse rib are located on the same plane. The transverse ribs and the longitudinal ribs are distributed along the axial direction of the circular frame and staggered. The surfaces of the longitudinal ribs, which are far away from the transverse ribs, are positioned on the same spherical surface, so that the thickness of the part, provided with the grid holes, of the grid plate is gradually thinned from the middle to the edge. The rear end face of the circular frame is provided with a frame part convex ring 415. In use, the filter paper 45 is laid over the rear end of the grid plate, the front end of the grid plate supporting the filtrate (e.g. activated carbon) in the canister. The frame part convex ring is clamped into the back shell part clamping groove, and the edge of the filter paper is clamped between the frame part convex ring and the back shell part clamping groove, so that the grid plate and the canister are fixed, and the filter paper is fixed. The first convex ring is arranged in the rear end of the front shell in a penetrating mode in a tight fit mode, and the first convex ring is matched with the front shell to clamp the grid plate through the pressing ring so as to realize secondary fixation of the grid plate.

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. A fire-fighting self-rescue respirator provided with a canister with a variable-thickness grid plate comprises a hood, an air outlet one-way valve and a canister, wherein the canister is provided with an air outlet hole, the canister is internally provided with the grid plate, and the fire-fighting self-rescue respirator is characterized in that the thickness of the grid plate provided with grid holes is gradually reduced from the middle to the edge, the grid plate comprises a circular frame, a plurality of transverse ribs and a plurality of longitudinal ribs are arranged in the circular frame, the transverse ribs and the longitudinal ribs are crossed to form the grid holes, a buffering air bag is arranged in the hood, the hood is provided with a neck sleeve setting section which is sleeved on the neck of a user, the neck sleeve setting section is of a flexible structure, the neck sleeve setting section is provided with a neck sleeve setting section tightening structure, and the neck sleeve setting section tightening structure comprises an annular cavity extending along the circumferential direction of the neck sleeve setting section, a guy cable fastening loosening, the guy cable is tied tightly and is loosened the structure and includes the arc pipe that extends along annular chamber circumference, be equipped with the dodge gap that extends along the arc pipe extending direction on the wall of arc pipe, be equipped with two sliders in the arc pipe, be located the flexible inflation rod that extends along the annular pipe extending direction between two sliders and the slider that drives two sliders and fold the spring, the both ends of guy cable are alternately back one-to-one with two sliders link together, flexible inflation rod is connected with the inflation and deflation port.

2. A fire fighting self-rescue respirator provided with canister with thickened grid plates as in claim 1, wherein the transverse and longitudinal ribs are distributed and staggered in the axial direction of the circular frame.

3. A fire fighting self-rescue respirator provided with canister with thickened grid plate according to claim 1, wherein the side of the transverse ribs facing the longitudinal ribs and the side of the longitudinal ribs facing the transverse ribs are located on the same plane.

4. The fire fighting self-rescue respirator with a canister with a variable-thickness grid plate according to claim 1, further comprising a mask located in the hood, wherein the outlet end of the canister and the inlet end of the air outlet check valve both penetrate through the back of the hood and are fixed together with the mask and are communicated with an inner space surrounded by the mask, a door closing spring and a door opening structure are arranged in the mask, an oxygen outlet communicated with the buffer airbag is arranged in the mask, a cover is arranged at the oxygen outlet, the door closing spring is used for driving the cover to close the oxygen outlet, the door opening structure is used for overcoming the elastic force 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, and the force arm for driving the lever to rotate is greater than the force arm for driving the lever to rotate by the door closing spring, the driving plug divides the sliding barrel 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.

5. A fire-fighting self-rescue respirator provided with a canister with a thickened grid plate as claimed in claim 4, wherein the oxygen outlet is communicated with the buffer air bag through a communicating pipe, and a valve is arranged on the communicating pipe.

6. A fire fighting self-rescue respirator provided with a canister with a thickened grid plate as claimed in claim 1, further comprising a control device, wherein two of the neck sheathing section tightening structures are distributed along the up-down direction, the air charging and discharging ports are connected with a bidirectional air pump, and the control device controls the guy cables of the two of the neck sheathing section tightening structures to be alternately tightened according to a set time interval.

7. A fire fighting self-rescue respirator provided with canister with thickened grid plate according to claim 6, wherein the bidirectional air pump is connected with the cushioning bladder.