CN107412967B

CN107412967B - Canister assembly of fire-fighting self-rescue respirator

Info

Publication number: CN107412967B
Application number: CN201710296355.3A
Authority: CN
Inventors: 姜有飞
Original assignee: Jiangshan City Keli Fire Fighting Equipment Co ltd
Current assignee: Jiangshan City Keli Fire Fighting Equipment Co ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2020-06-23
Anticipated expiration: 2037-04-28
Also published as: CN107412967A

Abstract

The invention relates to a fire-fighting article. The utility model provides a fire control self-rescuer canister assembly, includes shell and two filters, and nearly mouth end air cavity, filtering material storage chamber and far mouth end air cavity are cut apart into with the shell to two filters, and nearly mouth end air cavity is equipped with nearly mouth end gas pocket, and far mouth end air cavity is equipped with far mouth end gas pocket, all is equipped with a plurality of supporting pins that support the filter in nearly mouth end gas cavity and the far mouth end gas cavity, and nearly mouth end gas pocket is equipped with the handhole door, and the handhole door includes the apron and connects the kicking block on the apron, the apron with shell integrated into one piece is in the same place, and the junction of apron and shell is equipped with the damaged guide groove, and the damaged guide groove is located the inboard of apron, and the kicking block. The invention provides a canister assembly of a fire-fighting self-rescue respirator, which is not easy to generate a disengagement phenomenon of a hole cover and deform a filter plate, and solves the problems that the air hole is easy to drop and the filter plate is easy to deform due to suspended arrangement because a rubber plug is used for sealing the air hole.

Description

Canister assembly of fire-fighting self-rescue respirator

Technical Field

The invention relates to a fire-fighting product, in particular to a canister assembly of a fire-fighting self-rescue respirator.

Background

A fire fighting self-demand respirator is a tool which is worn during fire fighting operation to prevent smoke poisoning. The respirator filters the inhaled air through a green canister. A canister for a respirator is disclosed in chinese patent application No. 2012101089456, published as 2012, 8 and 1. The basic structure of the canister comprises a shell and two filter plates positioned in the shell, wherein the shell is divided into a near-mouth-end air cavity, a filter material storage cavity and a far-mouth-end air cavity by the two filter plates, the near-mouth-end air cavity is provided with a near-mouth-end air hole, the far-mouth-end air cavity is provided with a far-mouth-end air hole, and the filter material (such as activated carbon) is stored in the filter material storage cavity. The near-mouth-end air hole is covered by the rubber cover before not using, and when the rubber plug is pulled down to be worn when in use, air is filtered by the filtering material after flowing into the far-mouth-end air hole and then flows out from the near-mouth-end air hole. The prior poison filtering tank has the following defects: the rubber plug can be used for sealing in a pluggable mode, so that the phenomenon of wrong disengagement is easy to generate; the filter plate is in a suspended state, and the middle bulge is easy to deform; if the filter material is blocked and fails in the fire extinguishing field, suffocation is easy to occur, and even if the filter material is carried with a spare canister for replacement, smoke can still be inhaled during replacement, so that danger can be caused.

Disclosure of Invention

The invention provides a canister assembly of a fire-fighting self-rescue respirator, which is not easy to generate a disengagement phenomenon of a hole cover and deform a filter plate, and solves the problems that the air hole is easy to drop and the filter plate is easy to deform due to suspended arrangement because a rubber plug is used for sealing the air hole.

The technical problem is solved by the following technical scheme: the utility model provides a fire control self-rescuer canister assembly, includes the shell and is located two filters of shell, two filters will nearly mouth end air cavity, filtering material storage chamber and far mouth end air cavity are cut apart into to the shell, nearly mouth end air cavity is equipped with nearly mouth end gas pocket, far mouth end air cavity is equipped with far mouth end gas pocket, nearly mouth end gas cavity all is equipped with a plurality of supports with far mouth end gas cavity in nearly mouth end gas cavity the supporting pin of filter, nearly mouth end gas pocket is equipped with the handhole door, the handhole door includes the apron and connects the kicking block on the apron, the apron with shell integrated into one piece is in the same place, the junction of apron and shell is equipped with damaged guide groove, damaged guide groove is located the inboard of apron, the kicking block is located the outside of apron and outstanding in the shell. The method for opening the hole cover is that the top block impacts an object to make the cover plate split along the broken guide groove and separated from the shell to realize the removal of the hole cover. The cover plate and the shell are connected together in an integrated manner, so that the falling phenomenon is not easy to generate. The top block protrudes out of the shell, so that the hole cover is convenient to drive to fall off by impact. The breakage guide groove is arranged on the inner side of the cover plate, namely in the inner space of the shell, and scraps generated when the cover plate is taken down are not easy to fall into the shell. Set up the support column and support the filter to make the filter be difficult to produce and warp.

Preferably, the breakage guide groove is an annular groove extending in the circumferential direction of the proximal end air hole. The cover can be more reliably and completely removed.

Preferably, the cover plate is further provided with a plurality of reinforcing plates circumferentially distributed along the air holes near the mouth end, one ends of the reinforcing plates are connected with the ejector block, and connecting lines between the other ends of the reinforcing plates and the cover plate are located inside a space surrounded by the outer side wall of the damaged guide groove and outside a space outside the inner side wall of the damaged guide groove. The phenomenon that the cover plate is broken when the hole cover is taken down and the guide groove is not broken to cause the residual adhesion of the cover plate on the shell can be prevented, and the opening area of the air hole close to the mouth end is reduced to influence the smoothness during breathing when the residual adhesion of the cover plate is generated.

Preferably, the reinforcing plate is triangular, one side of the triangle where the reinforcing plate is located is a connecting line of the reinforcing plate and the top block, and the other side of the triangle is a connecting line of the reinforcing plate and the cover plate. Not only has better reinforcing effect, but also saves materials.

Preferably, the top block is provided with a power assisting groove extending along the circumferential direction of the air hole at the near-mouth end. After the hole cover and the shell are cracked, the hole cover is pulled out by pinching the hole cover in the power-assisted groove by fingertips. The pulling-out of the hole cover is convenient.

Preferably, the booster groove is inclined away from the side wall of the cover plate towards the cover plate to form a barb. The force is more easily exerted.

Preferably, the near-mouth-end air cavity comprises a main air cavity, a first branch air cavity and a second branch air cavity, the near-mouth-end air hole is arranged on the main air cavity, the first branch air cavity is provided with a first branch air hole communicated with the main air cavity, the second branch air cavity is provided with a second branch air hole communicated with the main air cavity, the far-mouth-end air cavity comprises a third branch air cavity and a fourth branch air cavity, the far-mouth-end air hole comprises a third branch air hole arranged on the third branch air cavity and a fourth branch air hole arranged on the fourth branch air cavity, all the branch air holes are covered with diaphragms, the diaphragms on the first branch air hole can only be opened towards the inside of the main air cavity, the diaphragms on the second branch air hole can only be opened towards the inside of the second branch air cavity, the diaphragms on the third branch air hole can only be opened towards the inside of the third branch air cavity, and the diaphragms on the fourth branch air hole can only be opened towards the outside of the, a barrel is rotatably connected in the shell, the two filter plates form two bottom walls of the barrel, the internal space of the barrel forms the filter material storage cavity, a partition board is arranged in the barrel and divides the filter material storage cavity into a first storage cavity and a second storage cavity; the first branch storage cavity and the second branch storage cavity are communicated, one branch storage cavity is communicated with the first branch air cavity and the third branch air cavity, and the other branch storage cavity is communicated with the second branch air cavity and the fourth branch air cavity; the shell is equipped with dodges the groove, be equipped with on the global of cask the warp dodge the groove and stretch out the twist grip of shell. The filter material is characterized in that the filter material is arranged in a storage cavity, the first branch air cavity is connected with the second branch air cavity, the third branch air cavity is connected with the third branch air cavity in a butt joint mode, the filter material is arranged in the storage cavity, the first branch air cavity is connected with the third branch air cavity in a butt joint mode, the filter material is arranged in the storage cavity, the second branch air cavity is connected with the fourth branch air cavity in a butt joint mode, the filter material is connected with the filter material in a reverse joint. When the filtering material with the filtering function is blocked to influence the smoothness of breathing, the rotating barrel body switches the positions of the two branch storage cavities, and the switching result is that the filtering material with the filtering function is changed into a cleaned filtering material (namely, the filter material is cleaned on site by using the exhaled gas), and the cleaned filtering material is changed into the filtering material with the filtering function to clean the inhaled gas. This technical scheme can not leave (promptly do not take off) better filter material under the condition of respirator at the mouth, and the material under the change can utilize the gas of exhalation to clean to next time reuse and play increase of service life's effect.

Preferably, the central angle corresponding to the avoidance groove is 180 °, when the rotary handle abuts against one end of the avoidance groove, the first branch air cavity and the third branch air cavity are communicated only through the first branch storage cavity and the second branch air cavity and the fourth branch air cavity are communicated only through the second branch storage cavity, and when the rotary handle abuts against the other end of the avoidance groove, the first branch air cavity and the third branch air cavity are communicated only through the second branch storage cavity and the second branch air cavity and the fourth branch air cavity are communicated only through the first branch storage cavity. The two storage cavities can be conveniently and accurately replaced.

Preferably, the diaphragm is provided with a connecting pin at the center, the thickness of the diaphragm gradually decreases from the center to the peripheral edge, and the diaphragm seals the branch air holes by the contact of the peripheral edge and the end faces of the branch air holes. The reliability when opening the diaphragm is good.

Preferably, both side surfaces of the diaphragm are convex. The reliability of the diaphragm when it is opened and closed can be further improved.

The invention has the following advantages: the air holes at the near and far mouth ends are not easy to open by mistake; the opening is convenient; the scraps generated during opening are not easy to fall into the interior of the canister; the filter plate is not easily deformed.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of the invention.

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

Fig. 3 is a schematic diagram of a second embodiment of the invention.

Fig. 4 is a partially enlarged schematic view of fig. 3 at B.

Fig. 5 is a partially enlarged schematic view of fig. 3 at C.

In the figure: the device comprises a shell 1, a box body 1-1, a box cover 1-2, a near mouth end air cavity 11, a near mouth end air hole 111, a main air cavity 112, a first branch air cavity 113, a second branch air cavity 114, a first branch air hole 115, a second branch air hole 116, a filtering material storage cavity 12, a first branch storage cavity 121, a second branch storage cavity 122, a far mouth end air cavity 13, a far mouth end air hole 131, a third branch air cavity 132, a fourth branch air cavity 133, a third branch air hole 134, a fourth branch air hole 135, a supporting pin 14, an avoiding groove 15, one end 151 of the avoiding groove, the other end 152 of the avoiding groove, a vertical partition plate 16, a first transverse partition plate 17, a second transverse partition plate 18, a hole cover 2, a cover plate 21, a top block 22, a reinforcing plate 23, a damaged guide groove 3, an outer side wall 31 of the damaged guide groove, an inner side wall 32 of the damaged groove, a power assisting groove 4, a side wall 41 of the power assisting groove far from the cover plate, the device comprises a barrel cover 5-2, a filter plate 51, a rotating handle 52, a partition plate 55, a jack 53, a plug 54, a diaphragm 6, a connecting pin 61, a connecting frame 62 and a connecting line L between one end of the reinforcing plate far away from the top block and the cover plate.

Detailed Description

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

Referring to fig. 1, a canister assembly for a fire self-rescue respirator comprises a housing 1 and two filter plates 51 located within the housing. The filter plate 51 is a mesh-structured plate.

The housing 1 is made of plastic. The housing 1 is cylindrical, and the center line of the housing extends in the left-right direction in the drawing. The shell 1 is formed by connecting a box body 1-1 and a box cover 1-2 together through tight balance. The two filter plates 51 divide the housing 1 into a proximal mouth end air chamber 11, a filter material reservoir chamber 12, and a distal mouth end air chamber 13.

The near-mouth-end air chamber 11 is provided with a near-mouth-end air hole 111. The proximal end air hole 111 is provided with a hole cover 2. The orifice cover 2 comprises a cover plate 21 and a top block 22. The cover plate 21 and the top block 2 are integrally structurally connected together. The cover plate 21 is plugged into the air hole 111 near the mouth end. The cover plate 21 and the housing 1, in particular the box cover 1-2, are integrally formed and connected together. The cover 2 is made of plastic. A breakage guide groove 3 is provided at the joint of the cover plate 21 and the housing 1. The breakage guide groove 3 is annular extending in the circumferential direction of the proximal air hole 111. The breakage guide groove 3 is located inside the cover plate 21. The top block 22 is located outside the cover plate 21. A top block 22 protruding from the housing 1. The cover plate 21 is also provided with a reinforcing plate 23. There are 7 reinforcing plates 23. The 7 reinforcing plates 23 are circumferentially distributed along the top block 22, i.e., the near-mouth-end air holes 111. The reinforcing plate 23 is triangular. One side of the reinforcing plate 23 is connected with the top block 22, and is particularly connected with the top block in an integrated forming mode, so that one side of the triangle where the reinforcing plate is located is a connecting line of the reinforcing plate and the top block. The other side of the reinforcing plate 23 is connected with the cover plate 21, specifically integrally formed, so that the other side of the triangle where the reinforcing plate is located is a connecting line of the reinforcing plate and the cover plate. The top block 22 is provided with a booster groove 4 extending in the circumferential direction of the top block. A plurality of support pins 14 are arranged in the proximal mouth end air cavity 11. Support pins 14 in the near-mouth-end air chamber 11 support the filter plates constituting the end where the near-mouth-end air chamber is located.

The distal-mouth-end air chamber 13 is provided with a distal-mouth-end air hole 131. A plurality of support pins 14 are also provided in the distal mouth end air chamber 13. The support pin 14 in the air chamber 13 at the far mouth end supports the filter plate at the end of the air chamber at the far mouth end

Referring to fig. 2, a connecting line L between one end of the reinforcing plate away from the top block and the cover plate is located inside a space surrounded by the outer sidewall 31 of the damage guide groove. The end of the reinforcing plate far from the top block and the connecting line L of the cover plate are positioned outside the space enclosed by the inner side wall 32 of the damage guiding groove. The booster groove slopes away from the cover plate side wall 41 towards the cover plate 21 to form a barb.

Referring to fig. 1 and 2, in use, a filter material such as activated carbon is filled in the filter material storage chamber 12. The invention is mounted on a fire-fighting self-rescue respirator with the proximal end air hole 111 facing the interior of the respirator. When the respirator is used in a fire-fighting site, the near-mouth-end air hole 111 is opened, and then the fire-fighting self-rescue respirator is covered on the face of a user. The air containing smoke on site flows through the far mouth end air hole 131, the far mouth end air cavity 13, the filter material storage cavity 12, the near mouth end air cavity 11 and the near mouth end air hole 111 in sequence, enters the respirator, and is inhaled by the user.

The method for opening the proximal air hole 111 comprises the following steps: the top block 22 is hit so that the cover plate 21 is split along the breakage guide groove 3 to separate and recess the hole cover 2 from the housing 1. And then the manhole cover 2 is pulled outwards by pinching fingers in the power assisting groove 4 to realize the removal of the manhole cover 2.

The second embodiment is different from the first embodiment in that:

referring to fig. 3, the housing 1 is provided with an escape groove 15. The avoidance groove 15 extends in the circumferential direction of the housing 1. The central angle corresponding to the avoiding groove 15 is 180 °, that is, the extending length of the avoiding groove 15 is half of the perimeter of the housing.

A drum 5 is also rotatably connected within the housing 1. The two bottom walls of the drum 5 are formed by two filter plates 51, in other words, the two bottom walls of the drum 5 are provided with a plurality of filter holes to form two filter plates. The barrel 5 is formed by connecting a barrel body 5-1 and a barrel cover 5-2 together. The inner space of the drum 5 constitutes a filter material storage chamber 12. The drum 5 is provided with a partition 55 inside. The partition 55 divides the filter material storage chamber 12 into a first storage chamber 121 and a second storage chamber 122 uniformly. A rotating handle 52 is provided on the outer peripheral surface of the drum 5. The turning handle 52 extends out of the housing 1 through the escape slot 15. The position of the barrel 5 is prevented from moving by friction between the barrel 5 and the housing 1.

The proximal-mouth-end air chamber 11 is divided into a main air chamber 112, a first sub air chamber 113 and a second sub air chamber 114 by a vertical partition plate 16 and a first transverse partition plate 17. The proximal-mouth-end air holes 111 are provided on the total air chamber 112. The first branch air chamber 113 communicates with the main air chamber 112 through the first branch air chamber 115. The second branch air chamber 114 communicates with the main air chamber 112 through a second branch air hole 116. The distal-mouth-end air chamber 13 is divided into a third sub-air chamber 132 and a fourth sub-air chamber 133 by the second cross-sectional plate 18. The distal end air hole 131 is formed by a third air hole 134 and a fourth air hole 135. The third branch air hole 134 is provided on the third branch air chamber 132. The fourth branch air hole 135 is provided on the fourth branch air chamber 133.

The first branch air hole 115, the second branch air hole 116, the third branch air hole 134 and the fourth branch air hole 135 are all covered with the diaphragm 6. The structure and the fixed mode of the membrane 6 in each branch air hole are the same, and the directions in the branch air holes are different, so that the on-off directions of the branch air holes are controlled, specifically: the diaphragm at the first branch air hole 115 can be opened only toward the inside of the main air cavity 112, the diaphragm at the second branch air hole 116 can be opened only toward the inside of the second branch air cavity 114, the diaphragm at the third branch air hole 134 can be opened only toward the inside of the third branch air cavity 132, and the diaphragm at the fourth branch air hole 135 can be opened only toward the outside of the fourth branch air cavity 133.

When the turning handle 52 is turned until the turning handle 52 abuts with the one end 151 of the escape groove (i.e., the state in fig. 3), the first sub air chamber 113 and the third sub air chamber 132 communicate only through the first sub storage chamber 121 and the second sub air chamber 114 and the fourth sub air chamber 133 communicate only through the second sub storage chamber 122. When the turning handle 52 is turned until the turning handle 52 abuts against the other end 152 of the escape groove, the first branch air chamber 113 and the third branch air chamber 132 communicate only through the second branch storage chamber 122 and the second branch air chamber 114 and the fourth branch air chamber 133 communicate only through the first branch storage chamber 121.

The gas communication route and the switching process of the invention are as follows:

it is assumed that in the figure there is an initial state,

under the control action of the diaphragm, the flow path of the gas during air suction is as follows: the third branch air hole 134 → the third branch air hole 132 → the first branch storage cavity 121 → the first branch air cavity 113 → the first branch air hole 115 → the total air cavity 112 → the near-mouth-end air hole 111; the flow path of the gas during expiration is as follows: the proximal-mouth-end air hole 111 → the total air cavity 112 → the second branch air hole 116 → the second branch air cavity 114 → the second branch storage cavity 122 → the fourth branch air cavity 133 → the fourth branch air hole 135.

When the filtering material (activated carbon) in the first storage cavity 121 generates particles to block dirt and affect inhalation, the rotating handle 52 is held to rotate the barrel 5 to rotate the handle 52 and abut against the other end 152 of the avoiding groove, at the moment, the round tube 5 rotates 180 degrees, so that the positions of the first storage cavity 121 and the second storage cavity 122 are exchanged, at the moment, the filtering material in the first storage cavity 122 is filtered through the first filtering material when inhalation, the gas during exhalation flows out through the filtering material in the first storage cavity 121, and the exhaled gas realizes reverse blowing of the filtering material in the first storage cavity 121 to realize cleaning.

Referring to fig. 4, the barrel body 5-1 and the barrel cover 5-2 are connected in a manner that a plurality of insertion holes 53 distributed along the circumferential direction of the barrel body are formed in the end surface of the barrel body 5-1, a plurality of insertion pins 54 distributed along the circumferential direction of the sleeve are formed in the end surface of the barrel cover 5-2, and the barrel body and the barrel cover are connected together by inserting the insertion pins into the insertion holes in a one-to-one correspondence manner, so that the barrel body 5-1 and the barrel cover 5-2 can rotate together during rotation.

The membrane is further described below with respect to the structure of the membrane in the second branch air hole 116:

referring to fig. 5, the center of the diaphragm 6 is provided with a connecting pin 61, the connecting pin 61 is screwed on the connecting frame 62, and the connecting die 62 is connected with the second branch air hole 116 to realize the fixation of the diaphragm. The thickness of the diaphragm 6 becomes thinner from the center toward the periphery, and specifically, both side surfaces of the diaphragm are formed to be convex. The diaphragm 6 is sealed to the second branch air hole 116 by abutting the periphery on the end face of the second branch air hole 116 at the end located in the second branch air hole 114. When the airflow generates an acting force that the first branch air cavity 113 flows to the main air cavity 112 through the second branch air hole 116, the diaphragm 6 is driven to block the second branch air hole 116, so that the partition is realized; when the air flow generates a force from the main air chamber 112 to the first branch air chamber 113 through the second branch air hole 116, the diaphragm is driven to separate from the second branch air hole 116, so that the air flow can flow through.

Claims

1. The canister assembly of the fire self-rescue respirator comprises a shell and two filter plates positioned in the shell, wherein the shell is divided into a near-mouth-end air cavity, a filter material storage cavity and a far-mouth-end air cavity by the two filter plates, the near-mouth-end air cavity is provided with a near-mouth-end air hole, and the far-mouth-end air cavity is provided with a far-mouth-end air hole The air holes near the mouth end are arranged on the main air cavity, the first air cavity is provided with a first air hole communicated with the main air cavity, the second air cavity is provided with a second air hole communicated with the main air cavity, the air holes far away from the mouth end comprise a third air cavity and a fourth air cavity, the air holes far away from the mouth end comprise a third air hole arranged on the third air cavity and a fourth air hole arranged on the fourth air cavity, all the air holes are covered with membranes, the membranes on the first air hole can only be opened towards the inside of the main air cavity, the membranes on the second air hole can only be opened towards the inside of the second air cavity, the membranes on the third air hole can only be opened towards the inside of the third air cavity, the membranes on the fourth air hole can only be opened towards the outside of the fourth air cavity, a barrel is rotatably connected in the shell, and the two filter plates form two bottom walls of the barrel, the inner space of the barrel forms the filter material storage cavity, a partition board is arranged inside the barrel and divides the filter material storage cavity into a first storage cavity and a second storage cavity; the first branch storage cavity and the second branch storage cavity are communicated, one branch storage cavity is communicated with the first branch air cavity and the third branch air cavity, and the other branch storage cavity is communicated with the second branch air cavity and the fourth branch air cavity; the shell is equipped with dodges the groove, be equipped with the warp on the global of cask dodge the groove and stretch out the turning handle of shell, the kicking block is equipped with along nearly mouth end gas pocket circumference extension's helping hand groove.

2. The fire self-rescuer canister assembly of claim 1, wherein the breakage guide slot is an annular slot extending circumferentially along the proximal mouth end air aperture.

3. The canister assembly of a fire self-rescue respirator as defined in claim 2 wherein the cover plate further comprises a plurality of reinforcing plates circumferentially distributed along the air holes near the mouth end, one end of each reinforcing plate is connected to the top block, and the other end of each reinforcing plate is connected to the cover plate through a connecting line located inside the space defined by the outer side wall of the damaged guide groove and outside the space defined by the outer side wall of the damaged guide groove.

4. A fire fighting self-rescue respirator canister assembly as defined in claim 3 wherein the reinforcing plate is triangular, one side of the triangle in which the reinforcing plate is located being a connecting line of the reinforcing plate with the top block and the other side being a connecting line of the reinforcing plate with the cover plate.

5. The fire fighting self-rescuer canister assembly of claim 1, wherein the booster groove slopes away from the side wall of the cover plate toward the cover plate forming a barb.

6. The fire fighting self-rescue respirator canister assembly of claim 1, wherein the central angle corresponding to the dodging slot is 180 °, the rotation handle is connected with one end of the dodging slot in an abutting manner, the first branch air cavity and the third branch air cavity are only communicated through the first branch storage cavity and the second branch air cavity and the fourth branch air cavity are only communicated through the second branch storage cavity, the rotation handle is connected with the other end of the dodging slot in an abutting manner, the first branch air cavity and the third branch air cavity are only communicated through the second branch storage cavity and the second branch air cavity and the fourth branch air cavity are only communicated through the first branch storage cavity.

7. The canister assembly of claim 1, wherein the membrane has a connecting pin at the center, the membrane gradually decreases in thickness from the center to the periphery, and the membrane abuts against the end face of the branch vent through the periphery to seal the branch vent.

8. The fire fighting self-rescuer canister assembly of claim 7, wherein both side surfaces of the diaphragm are convex.