CN215309793U

CN215309793U - A filter respirator for emergency rescue

Info

Publication number: CN215309793U
Application number: CN202121234935.8U
Authority: CN
Inventors: 徐海峰
Original assignee: Meidashun Nanjing Safety Technology Co ltd
Current assignee: Meidashun Nanjing Safety Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-28
Anticipated expiration: 2031-06-03

Abstract

The embodiment of the utility model discloses a filtering respirator for emergency rescue, which relates to the technical field of emergency rescue equipment, realizes the free switching between a power filtering air supply mode and an air cylinder air supply mode, and simultaneously optimizes and simplifies the overall design of the filtering respirator, so that the filtering respirator is thicker and shorter overall and is suitable for the body types of Asians. The utility model comprises the following steps: a pressure reducing valve 4 is arranged at an air outlet of the compressed air cylinder 2, and the pressure reducing valve 4 is connected with an air supply valve 13 arranged on the power air supply filtering respirator 3 through a connecting medium-pressure pipe 16; the air supply valve 13 is connected with a mask air inlet hole 6 arranged on the breathing mask 1 through an air supply pipeline 8, and a control switch 11 is also arranged on the mask air inlet hole 6; a power air supply mechanism mounting station 32 is arranged in a filtering respirator base 33 of the power air supply filtering respirator 3, and a filter 31 is arranged on the power air supply mechanism mounting station 32; the air supply valve 13 is connected with a filter 31 arranged on the power supply filtering respirator 3 through a one-way valve 5.

Description

A filter respirator for emergency rescue

Technical Field

The utility model relates to the technical field of emergency rescue equipment, in particular to a filtering respirator for emergency rescue.

Background

A self-contained circulating air respirator (self-contained positive pressure air respirator) is taken as safety protection equipment and is widely applied to occasions with emergency rescue possibility in fire fighting, chemical engineering, ships, petroleum, smelting, factories and mines, laboratories and the like.

However, in practical applications, the actual situation of rescue workers working with gas cylinder gas supply in a disaster accident site is complex, and in some large-scale disaster sites, various operation forms often alternate, and the same fireman often undertakes various operation forms such as reconnaissance, breaking and dismantling, saving people, extinguishing fire and the like, so that the gas cylinder gas supply system needs to be continuously perfected, the breathing protection time of the workers in the accident site is prolonged, the rescue efficiency is improved, and secondary accidents are avoided.

The filtering respirator is also needed to be improved as an important ring in the whole gas cylinder gas supply system. Most of the existing filtering respirators adopt imported equipment, and a part of equipment produced in China mainly refers to imported products, but the products are in the body types of European and American people in the initial consideration of design, so that filters in the products are mostly arranged in a straight line, and the filtering respirators are integrally in a strip shape. The size and the shape of the filtering respirator are not completely suitable for the body shape of the Asian, and certain dragging or shaking conditions exist in the using process, so that the actions of rescuers are influenced. Therefore, how to optimize and simplify the overall design of the filtering respirator to make it more suitable for the size of the asian people becomes a delicate and important problem.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a filtering respirator for emergency rescue, which realizes the free switching between a power filtering air supply mode and an air cylinder air supply mode, simultaneously optimizes and simplifies the overall design of the filtering respirator, and ensures that the filtering respirator is thicker and shorter as a whole, thereby being suitable for the body types of Asians.

In order to achieve the above purpose, the embodiment of the utility model adopts the following technical scheme:

a pressure reducing valve (4) is installed at an air outlet of the compressed air cylinder (2), and the pressure reducing valve (4) is connected with an air supply valve (13) installed on the power air supply filtering respirator (3) through a connecting medium pressure pipe (16); the air supply valve (13) is connected with a mask air inlet hole (6) arranged on the breathing mask (1) through an air supply pipeline (8), and a control switch (11) is also arranged on the mask air inlet hole (6); a power air supply mechanism mounting station (32) is arranged in a filtering respirator base (33) of the power air supply filtering respirator (3), and a filter (31) is mounted on the power air supply mechanism mounting station (32); the air supply valve (13) is connected with a filter (31) arranged on the power air supply filtering respirator (3) through a one-way valve (5).

The control module (12) is respectively connected with the control switch (11), a switch driving mechanism (15) of the air supply valve (13) and the filter (31) through a signal control circuit (7); the control switch (11) sends a signal after being toggled to trigger a switch driving mechanism (15) of the air supply valve (13) to operate so as to open or close the air supply valve (13); the control switch used in this embodiment may be an existing product in the market, such as a rotary switch, and a user may toggle the rotary switch to send out corresponding electrical signals, which are used to trigger other components.

When air is supplied through the filter (31), the air filtered by the filter (31) flows through the one-way valve (5) from the outlet of the power air supply mechanism mounting station (32) and then flows to the air supply pipeline (8) until flowing to the breathing mask (1); when air is supplied through the compressed air cylinder (2), the air flows to the air supply pipeline (8) from the air supply valve (13) until flows to the breathing mask (1), the air of the compressed air cylinder (2) is prevented from entering the power supply filtering respirator (3) by the one-way valve (5), and the shell of the filtering respirator base (33) extends upwards and wraps the bottom of the filter (31); a shell of the filtering respirator base (33) is provided with a filter belt jack (331) and an inlet wire interface (332).

The filtering respirator for emergency rescue provided by the embodiment of the utility model realizes that both a power filtering air supply mode and an air cylinder air supply mode are considered, the filter used in the filtering air supply mode is effectively integrated in the filtering respirator, and the overall design of the filtering respirator is optimized and simplified on the premise of realizing the mode switching, so that the filtering respirator is thicker and shorter as a whole and is suitable for the body shape of Asian people.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a separable multi-functional respirator system according to the present invention;

FIG. 2 is a schematic view of a separable multi-functional respirator system according to the present invention in one embodiment;

FIG. 3 is a schematic view of the exterior configuration of a powered air-supplying filtering respirator of the present invention from a first perspective;

FIG. 4 is a schematic view of the exterior configuration of a powered air-supplying filtering respirator of the present invention from a second perspective;

FIG. 5 is a schematic view of the internal construction of a powered air-supplying filtering respirator of the present invention from a first perspective;

FIG. 6 is a schematic view of the internal structure of a powered air-supplying filtering respirator of the present invention from a second perspective.

The respirator comprises a breathing mask 1, a compressed air cylinder 2, a power-supply filtering respirator 3, a filter 31, a power-supply mechanism 32, a filtering respirator base 33, a filter belt jack 331, a filter belt jack 332, an inlet wire interface, a pressure reducing valve 4, a check valve 5, a mask air inlet 6, a signal control circuit 7, an air supply pipeline 8, a check valve 81, a power-supply mechanism 9, a respirator back plate 10, a control switch 11, a control module 12, an air supply valve 13, a sensor module 14, a switch driving mechanism 15 and a medium pressure pipe 16.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

An embodiment of the present invention provides a filtering respirator for emergency rescue, as shown in fig. 1, including:

a pressure reducing valve (4) is installed at the air outlet of the compressed air cylinder (2), and the pressure reducing valve (4) is connected with an air supply valve (13) installed on the power air supply filtering respirator (3) through a connecting medium pressure pipe (16). The air supply valve (13) is connected with a mask air inlet hole (6) arranged on the breathing mask (1) through an air supply pipeline (8), and a control switch (11) is also arranged on the mask air inlet hole (6). The air supply valve (13) is connected with a filter (31) arranged on the power air supply filtering respirator (3) through a one-way valve (5).

A filtering respirator base (33) of the power air supply filtering respirator (3) is provided with a power air supply mechanism mounting station (32), and a filter (31) is arranged on the power air supply mechanism mounting station (32). For example: as shown in fig. 1, a power air supply mechanism (9) is arranged in the power air supply mechanism mounting station (32) for supplying air, and a driving circuit module and a power supply module can be mounted outside the power air supply mechanism mounting station (32) for driving the air supply mechanism.

In this embodiment, the control module (12) is connected to the control switch (11), the switch driving mechanism (15) of the air supply valve (13), and the filter (31) through the signal control line (7). The control switch (11) sends a signal after being toggled, and a switch driving mechanism (15) of the air supply valve (13) is triggered to operate so as to open or close the air supply valve (13). In practical application, a motor can be used as the switch driving mechanism.

The control switch used in this embodiment may be an existing product on the market, and when the control switch is turned by being toggled, the control switch may emit corresponding electrical signals, and the electrical signals are used to trigger other components.

The shell of the filtering respirator base (33) extends upward and wraps around the bottom of the filter (31). A shell of the filtering respirator base (33) is provided with a filter belt jack (331) and an inlet wire interface (332). For example: as shown in fig. 3-4, the filtering respirator base (33) is wrapped by a shell, and can support the filter (31), and the shell is provided with a filter belt jack (331) and an inlet wire interface (332). In particular, the filtering respirator base (33) can be designed modularly according to requirements and can be designed to be capable of being provided with one filter, two filters or even more.

In the embodiment, when air is supplied through the filter (31), the air filtered by the filter (31) flows through the one-way valve (5) from the outlet of the power air supply mechanism mounting station (32) and then flows to the air supply pipeline (8) until flowing to the breathing mask (1).

When supplying air through compressed air cylinder (2), gas flows to air supply pipeline (8) from air supply valve (13) until flowing to respirator (1), and the gas of compressed air cylinder (2) is prevented by check valve (5) and is got into power air supply filtering respirator (3), for example:

as shown in fig. 5, when air is supplied by using the filter (31), the filtered air flows from the outlet of the power supply mechanism mounting station (32) through the check valve (5) at 81 as shown by an arrow in the figure, flows to the air supply line (8), and finally flows to the breathing mask (1). If the air is supplied by using the air bottle, the air flows from the air supply valve (13) to the air supply pipeline (8) and finally flows to the breathing mask (1) as shown by arrows in the figure, and the air in the air bottle (2) cannot enter the power air supply filtering respirator (3) due to the action of the one-way valve (5) and then flows to the air.

Further, in the power filtering air supply mode: the control switch (11) transmits a signal to the control module (12), the control module (12) triggers the switch driving mechanism of the air supply valve (13) to close the air supply valve (13), and simultaneously triggers the power air supply mechanism (9) to start working, so that air is supplied to the breathing mask (1) through the air supply pipeline (8).

In the gas cylinder gas supply mode: the control switch (11) transmits a signal to the control module (12), the control module (12) triggers a switch driving mechanism of the air supply valve (13) to control the opening of the air supply valve (13), and simultaneously controls the power air supply mechanism (9) to stop working, so that air is supplied by the compressed air cylinder (2).

As shown in fig. 1-2, when the control switch (11) on the air inlet hole (6) of the mask is switched to the power filtering air supply mode, the control switch (11) transmits a signal to the control module (12), the control module (12) triggers the switch driving mechanism of the air supply valve (13) to close, and simultaneously triggers the power air supply mechanism (9) to start working, so that air is supplied to the breathing mask (1) through the air supply pipeline (8).

When the control switch (11) is switched to a gas cylinder gas supply mode, the control switch (11) transmits a signal to the control module (12), the control module (12) triggers a switch driving mechanism of the gas supply valve (13) to control the gas supply valve to be opened, and simultaneously controls the power air supply mechanism (9) to stop working and supply gas through the gas cylinder.

Firstly, a control module (12) is installed on a back plate (10) of the respirator, and the sensor module (14) comprising a sensor module (14) in the control module (12) at least comprises a gas sensor and an oxygen concentration sensor. And the gas sensor is used for detecting toxic gas species. And the oxygen concentration sensor is used for detecting the oxygen concentration. Specifically, the control module (12) can be integrated into a functional module area on the back plate (10) of the respirator, and the functional module area on the back plate (10) of the respirator can be generally designed into a mounting position for mounting electronic components, wherein corresponding data interfaces and power interfaces are provided in the mounting position so as to facilitate the access of the electronic components such as sensors, industrial personal computers and the like; the control module (12) can also be arranged outside the power air supply mechanism mounting station (32), for example, a filter belt jack (331) and an inlet wire interface (332) are arranged on the shell of the filtering respirator base (33) to be connected with the control module (12) so as to realize signal interaction. The main control module and the battery module mounted on the back plate supply power and transmit signals to the man-machine interaction equipment, the electronic pressure gauge and the like on the mask matched with the air call.

In practical application, in order to guarantee the reliability of coping with extreme working conditions, it is required that a user dials the control switch to a power filtering air supply mode, namely, the oxygen concentration in the surrounding environment is required to be not lower than 19%, so that the control module (12) also comprises a sensor module (14), and signals such as the oxygen concentration value and other toxic gas concentrations can be transmitted to a pressure head-up display device (HUD) on the mask to prompt key information such as the oxygen concentration, the carbon monoxide concentration and the filter state. The state of the filter is estimated according to the service time of the filter by the control module, the remaining service time is estimated according to the service time of the filter, after one filter is generally unsealed, once the filter is opened for use, the filter cannot be used after being opened for 6 months at most, the filter can be saturated if the filter is always exposed in the air for more than ten hours, and if the filter is in a disaster site, the filter can be saturated after being considered for 45 minutes, so the service time of the filter, namely the accumulated working time of the power air supply mechanism after the power air supply mechanism is started, is accumulated by the control module (12).

The user judges whether to place the control switch in the gas cylinder gas supply mode or the power filtering air supply mode according to the oxygen concentration and the toxic gas concentration, and simultaneously determines when to switch the control switch back to the gas cylinder gas supply mode according to the remaining service life of the filter. Therefore, according to the judgment of the oxygen concentration and the toxic gas, automatic switching can be realized through software control, or an alarm is given to prompt a user to manually switch two modes of air filtration and air supply of the air bottle. The manual switching function must be preserved, for example: when the gas cylinder exhausts, control module also judges that the filter is saturated and can not use, can also manually dial control switch to power filtration air supply mode in this time, can breathe the not too good air of filter effect, can avoid personnel's oxygen deficiency at least, during general automatic switch-over, judge that the filter is saturated and all can leave the surplus, just namely just automatically closed power filtration air supply mode when the filter is not fully saturated. The manual switching and the manual + automatic switching are the same in the circuit of the control module, and the main difference is the operation mode.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points. The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A filtering respirator for emergency rescue, comprising:

a pressure reducing valve (4) is installed at an air outlet of the compressed air cylinder (2), and the pressure reducing valve (4) is connected with an air supply valve (13) installed on the power air supply filtering respirator (3) through a connecting medium pressure pipe (16);

the air supply valve (13) is connected with a mask air inlet hole (6) arranged on the breathing mask (1) through an air supply pipeline (8), and a control switch (11) is also arranged on the mask air inlet hole (6);

a power air supply mechanism mounting station (32) is arranged in a filtering respirator base (33) of the power air supply filtering respirator (3), and a filter (31) is mounted on the power air supply mechanism mounting station (32);

the air supply valve (13) is connected with a filter (31) arranged on the power air supply filtering respirator (3) through a one-way valve (5).

2. The filtering respirator for emergency rescue according to claim 1, characterized in that the control module (12) is connected with the control switch (11), the switch driving mechanism (15) of the air supply valve (13) and the power air supply mechanism (9) installed in the power air supply filtering respirator (3) through the signal control line (7) respectively;

the control switch (11) sends a signal after being toggled, and a switch driving mechanism (15) of the air supply valve (13) is triggered to operate so as to open or close the air supply valve (13).

3. The filtering respirator for emergency rescue according to claim 2, characterized in that when air is supplied through the filter (31), the air filtered by the filter (31) is discharged from the power supply mechanism mounting station (32), flows through the one-way valve (5), and flows to the air supply pipeline (8) until flowing to the breathing mask (1);

when air is supplied through the compressed air cylinder (2), air flows to the air supply pipeline (8) from the air supply valve (13) until flowing to the breathing mask (1), and the air of the compressed air cylinder (2) is prevented from entering the power air supply filtering respirator (3) by the one-way valve (5).

4. The filtering respirator for emergency rescue according to claim 1, characterized in that the outer shell of the filtering respirator base (33) extends upwards and encloses the bottom of the filter (31);

a shell of the filtering respirator base (33) is provided with a filter belt jack (331) and an inlet wire interface (332).

5. The filtering respirator for emergency rescue according to claim 2 or 3, characterized in that, in the powered filtered air supply mode:

the control switch (11) transmits a signal to the control module (12), the control module (12) triggers the switch driving mechanism of the air supply valve (13) to close the air supply valve (13), and simultaneously triggers the power air supply mechanism (9) to start working, so that air is supplied to the breathing mask (1) through the air supply pipeline (8).

6. The filtering respirator for emergency rescue according to claim 2 or 3, characterized in that, in cylinder air supply mode:

the control switch (11) transmits a signal to the control module (12), the control module (12) triggers a switch driving mechanism of the air supply valve (13) to control the opening of the air supply valve (13), and simultaneously controls the power air supply mechanism (9) to stop working, so that air is supplied by the compressed air cylinder (2).

7. The filtering respirator for emergency rescue according to claim 1, characterized in that a control module (12) is mounted on the respirator back plate (10), the sensor module (14) comprising the sensor module (14) in the control module (12) comprising at least a gas sensor and an oxygen concentration sensor;

a gas sensor for detecting toxic gas species; and the oxygen concentration sensor is used for detecting the oxygen concentration.

8. The filtering respirator for emergency rescue according to claim 7, characterized in that the control module (12) is integrated in the functional module area on the respirator back plate (10);

or is arranged outside the installation station (32) of the power air supply mechanism of the control module (12).