JP3423697B2 - Dustproof / poisonous breathing support equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can be preferably implemented as equipment for ensuring the breathing of a worker who works in a work space where dust in a building such as a refuse incinerator floats. Respiratory support equipment for gas prevention.

[0002]

2. Description of the Related Art In a refuse incinerator, which is a building having a work space in which dust floats, a worker works in a work space in which dust / toxic gas floats for a long time in order to maintain the inside of the furnace. Need to do. Dust / toxic gas may float in this work space, and harmful substances such as dioxins may be attached to the dust. Also, toxic gases such as gasified dioxins may be generated from the refuse incinerator. Therefore, the worker performs a predetermined work in the work space by using a respiratory protective device such as a dust / toxic gas mask, an air line mask, and an air respirator to prevent harmful substances from being sucked into the body. .

In such a conventional technique, there is a problem in long-term use such that the dust-proof / toxic gas mask does not have sufficient protection performance against harmful substances, and the filter is clogged when there is much dust / gas. . Further, in the air line mask, clean air is supplied through the air line hose, but there is a problem that the air cannot be safely evacuated from the harmful environment when the supply air pressure drops or is interrupted. In addition, in the air respirator, the breathing air pressure-filled in the pressure vessel,
Although the pressure is reduced to atmospheric pressure by the pressure reducing valve and the pulmonary force valve, the pressure vessel is limited in the amount of breathing air to be compressed and filled, so that it can be used only for a short time of about 30 minutes to 1 hour. Since the mass is considerably large, there is a problem that workability is poor.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to prevent dust and gas from being able to work continuously for a long time and to improve the safety and workability of work in a work space. It is to provide respiratory support equipment.

Another object of the present invention is to allow breathing with a clean breathing gas even when a situation in which a breathing gas such as air cannot be used from a breathing gas supply source such as a pressure vessel. It is to provide a dust-proof / gas-proof breathing support device.

[0006]

According to a first aspect of the present invention, an outlet is provided at a predetermined position of a building, and a breathing gas is supplied to the outlet from a breathing gas supply source through a first conduit. It is a dust-proof breathing support device that is a lung force valve that introduces breathing gas by inspiratory pressure, an exhalation valve that expels exhaled air by expiratory pressure, and a filter for inhaling outside air by filtering harmful dust in the outside air. A dust mask provided with a dust filter, a flexible second pipe having one end removably connected to the outlet, and a flexible lung force valve of the dust mask having one end. A third pipe line connected to the first pipe line, and a first connection part to which the other end of the second pipe line is detachably connected.
The other end of the third conduit is connected, and has a second connecting portion that communicates with the first connecting portion, and between the first and second connecting portions,
A dust-respiratory breathing support facility, comprising: a relay connector in which a check valve that opens in a direction of introducing the breathing gas from the first connecting portion to the second connecting portion by an intake pressure is interposed.

According to the present invention, an outlet is provided at a predetermined position of the building, and the breathing gas is introduced into the outlet from the breathing gas supply source through the first conduit and is led to the outlet. The breathing gas is led to the pulmonary valve via the second conduit, the relay connector and the third conduit. When the worker inhales while wearing a dust mask on his head, the lung pressure valve operates due to the inspiratory pressure, and the air reduced in atmospheric pressure is supplied. At the time of exhalation, the exhalation valve is opened by the exhalation pressure, and the exhalation is discharged to the outside. In this way, clean breathing gas from the breathing gas supply source can be continuously supplied to the worker for a long time. Therefore, as described in connection with the prior art, work is prevented from being interrupted by clogging of the filter of the dust mask and consumption of breathing gas in the pressure vessel of the air respirator, thus improving workability. Can be planned.

The second conduit, the relay connector and the third conduit are used to supply the breathing gas from the outlet to the lung force valve of the dust mask. The relay connector has first and second connecting parts, the other end of the second conduit is detachably connected to the first connecting part, and the second connecting part includes the other part of the third conduit. The ends are detachably connected, and a check valve is interposed between the first and second connecting parts. When the lung valve is opened by the inspiration and the respiratory gas is supplied into the dust mask, the gas pressure at the second connection portion is reduced, the check valve is opened, and the gas is supplied from the first connection portion side. During exhalation, the gas pressures of the second connecting portion and the first connecting portion become equal and the check valve closes. In this way, in the state where the other ends of the second and third conduits are connected to the relay connector, the breathing gas is smoothly supplied in response to breathing.
In addition, when it is not necessary to supply breathing gas in an emergency or when moving outside the work space, it is possible to remove the other end of the second conduit from the first connecting portion of the relay connector and move freely. Therefore, the problem that the worker's action is restricted or limited by the second conduit does not occur.

According to a second aspect of the present invention, the relay connector generates an alarm sound when the pressure of the breathing gas introduced from the outlet to the pulmonary valve drops below a predetermined set pressure. It is characterized by including means.

According to the present invention, since the alarm sound generating means is provided in the relay connector, when the pressure of the breathing gas guided from the outlet to the lung force valve falls below a preset set pressure, an alarm is issued. A sound is generated to notify that the pressure of the breathing gas is abnormal, and it is possible to prompt a countermeasure against the abnormality, thereby improving safety.

According to a third aspect of the present invention, in the dust mask, a plug body for closing an opening facing the outside so as to be openable and closable from the outside, and the dust mask in an opened state by an intake pressure. It is characterized in that there is provided an outside air introducing means having an intake valve which is opened in a direction of introducing the outside air and is closed by the expiratory pressure, and a dust filter provided between the opening and the intake valve.

According to the present invention, the dust mask is provided with outside air introducing means. This outside air introducing means has a plug body, an intake valve, and a dustproof filter. When the dustproof filter is not used, the plug prevents external dust from adhering to the filter and deteriorating the performance. In an emergency, the plug can be operated from the outside to open the opening, the outside air is sucked by the intake pressure in the dust mask, and clean air removed by the dust filter is supplied into the dust mask.
The worker's breathing can be secured, the worker can evacuate from the work space to the outside, or measures can be taken in the work space to solve the emergency, and the safety is improved. Further, as described above, even when the second conduit is removed from the relay connector and the gas for breathing is not supplied to the dust mask, the fresh air can be breathed by the fresh air introducing means, so the work is completed. When the worker later moves to the dust removing chamber to remove the dust adhering to the whole body and removes dust by the jet shower in the dust removing chamber, the safety is maintained without inhaling harmful substances. Further, it is not necessary to separately provide a means for supplying the breathing gas into the dust removing chamber, and it is possible to simplify the equipment and reduce the cost.

The present invention according to claim 4 is characterized in that one end of the second conduit can be connected to the breathing gas supply source.

According to the present invention, when the building is small, an outlet is not provided at a predetermined position, a first pipeline is not provided, and the second pipeline is connected to the respiratory gas supply source to connect the relay connector. The breathing gas can be supplied to the lung force valve of the dustproof mask through the third conduit, which improves workability and safety in an emergency.

According to a fifth aspect of the present invention, an outlet is provided at a predetermined position of a building, and breathing gas is supplied to the outlet from a breathing gas supply source via a first conduit. It is a support facility that includes a lung force valve that introduces breathing gas by inspiratory pressure, an exhalation valve that expels exhaled air by expiratory pressure, and filters harmful dust in the outside air to remove harmful gas in the outside air. , A dust / gas mask equipped with a dust / gas filter for inhaling the outside air, and a second conduit having flexibility and having one end detachably connected to the outlet, and having flexibility , A third conduit whose one end is connected to the lung force valve of the dust / gas mask, a first connecting part to which the other end of the second conduit is detachably connected, and a third conduit A second connecting portion connected to the first connecting portion and communicating with the first connecting portion; Between the second connecting portions, there is included a relay connecting tool in which a check valve that is opened in a direction in which the breathing gas is introduced from the first connecting portion to the second connecting portion by an intake pressure is interposed, and a relay connector.・ It is a respiratory support facility for gas proofing.

According to the present invention, the dustproof / gas mask is provided with a filter that not only filters harmful dust in the outside air but also removes harmful gas, for example, adsorbs or decomposes harmful gas. . In this way, clean breathing gas can be continuously supplied to the work vehicle for a long time.

According to a sixth aspect of the present invention, the relay connector generates an alarm sound when the pressure of the breathing gas guided from the outlet to the lung valve falls below a predetermined set pressure. It is characterized by including means.

According to a seventh aspect of the present invention, in the dustproof / gasproof mask, there is provided a plug for closing an opening facing the outside so that the opening can be opened and closed from the outside, and a suction member in a state where the plug is opened. It is characterized in that an outside air introducing means is provided, which has an intake valve which is opened in a direction of introducing the outside air by the atmospheric pressure and is closed by the exhalation air pressure, and a dust removing / gasproof filter provided between the opening and the intake valve.

The present invention according to claim 8 is characterized in that one end of the second conduit can be connected to the respiratory gas supply source.

According to the present invention, the same effects as those of claims 2, 3 and 4 can be achieved in relation to the dust-proof / gas-proof breathing support equipment.

The present invention according to claim 9 is a dust-proof / gas-proof filter, wherein the dust-proof filter and a gas-proof filter arranged downstream of the dust-proof filter in the outside air are laminated in a separable manner. Is selectively exchangeable depending on the type of toxic gas to be removed.

According to the present invention, the dust-proof / gas-proof filter provided in the dust-proof / gas-proof mask filters the dust with the dust filter on the outside air side, and removes the toxic gas by the gas-proof filter arranged on the downstream side of the dust filter. Can be removed. This gas filter can be selectively exchanged depending on the type of toxic gas to be removed, and when the toxic gas to be removed is, for example, dioxin, it may have a structure containing activated carbon particles or a gas absorbent. The gas filter may have other configurations when toxic gases are to be removed. The dustproof filter and the gasproof filter are separable, so that only the gasproof filter can be selectively replaced as described above. Further, only the dustproof filter may be replaced.

The present invention according to claim 10 is a dust-proof / gas-proof filter, in which a dust-proof filter and a gas-proof filter arranged downstream of the dust-proof filter in the outside air are integrally laminated to form a dust-proof / gas-proof filter. The gas filter is characterized in that it can be selectively replaced depending on the type of toxic gas to be removed.

According to the present invention, the dustproof filter and the gasproof filter are integrally laminated, that is, these two filters cannot be separated, and the dustproof / gasproof filter thus constructed is removed. It can be selectively exchanged depending on the kind of toxic gas to be used. The dustproof / gasproof filter may be configured by integrally laminating the dustproof filter and the gasproof filter as described above, but it has other configurations so that each function of dustproof and gasproof can be achieved. May be configured as.

According to the present invention of claim 11, an outlet is provided at a predetermined position of the building, and breathing gas is supplied to the outlet from the breathing gas supply source through the first pipe line. A lung mask that introduces breathing gas by inspiratory pressure, an exhalation valve that expels exhaled air by expiratory pressure, and a gas mask equipped with a gas filter that removes harmful gas in the outside air and inhales the outside air. A second conduit which is flexible and has one end removably connected to the outlet, and a third tube which is flexible and one end connected to the pulmonary valve of the gas mask A first connecting part to which the other end of the second conduit is detachably connected, and a second connecting part to which the other end of the third conduit is connected and communicates with the first connecting part. The first and second connection parts have a first
And a relay connecting device in which a check valve that opens in the direction of introducing the breathing gas from the connecting portion to the second connecting portion is interposed.

According to the present invention, harmful gas in the outside air can be removed by the gas filter provided in the gas mask.

According to the twelfth aspect of the present invention, the relay connector generates an alarm sound when the pressure of the breathing gas introduced from the outlet to the pulmonary valve drops below a predetermined set pressure. It is characterized by including means.

In the thirteenth aspect of the present invention, the gas mask has a plug body for closing an opening portion which is exposed to the outside so as to be openable and closable from the outside, and when the plug body is opened, an intake pressure is applied. It is characterized in that there is provided an outside air introducing means having an intake valve which is opened in a direction of introducing the outside air and is closed by the expiratory pressure, and a dust filter provided between the opening and the intake valve.

According to a fourteenth aspect of the present invention, one end of the second conduit can be connected to the breathing gas supply source.

According to the present invention, the gas filter provided in the gas mask can achieve the same operation as that of the present invention described in claims 2 to 4 and 6 to 8.

The present invention according to claim 15 is characterized in that the gas filter is selectively replaceable depending on the kind of toxic gas to be removed.

According to the present invention, the gas filter can be selectively replaced depending on the type of toxic gas to be removed, for example, dioxin and other types of gas.

[0033]

1 is a perspective view showing the overall structure of a dust-proof breathing support facility according to an embodiment of the present invention.
The dust-proof breathing support equipment of the present embodiment includes a breathing gas supply source 1, an incinerator 3 that is a building having a combustion chamber 2 that is a work space in which dust floats, and an exhaust gas from the incinerator 3. Respiratory gas from the respiration source 1 is provided in the exhaust gas treatment facility 5 that is a building having an internal space 4 that is a working space in which a dust collector or the like for removing dust is installed. A plurality of outlets 7 having socket terminals 6 guided by the gas supply pipe 23 and breathing gas from the socket terminals 6 of the outlets 7 are introduced, and the breathing gas is released by the inspiratory pressure to introduce the breathing gas. A breathing gas guide which is equipped with the lung force valve 8 shown in FIG. 2 and is installed on the head of the worker 9 and breathing gas from the socket terminal 6 of each outlet 7 is guided to the lung force valve 8. Means 12 Including the.

The incinerator 3 is formed in a substantially rectangular parallelepiped shape, and it is provided in each of the floors of the incinerator body 13 rising from the ground and protruding from the outer wall surface of the incinerator body 13 with vertical intervals. A plurality of work scaffolds 14 to be installed, an installation surface 15 of the incinerator 3 and a work scaffold 14a on the top floor, and an elevating means 16 capable of stopping and elevating each work scaffold 14 on each floor, and an installation surface. 15 to the ladder 17 provided over the working scaffold 14a on the top floor. The elevating means 16 may be realized by, for example, an elevator, or may be realized by an elevator conveyor for loading and unloading equipment.

The incinerator main body 13 is provided with an entrance / exit 18 for the worker 9 to enter / exit the internal combustion chamber 2 for each floor, and the outlet 7 is installed adjacent to each entrance / exit 18. The doorway 18 is the furnace wall 1 of the incinerator body 13.
9 has an opening 21 and a door 22 provided in the opening 21 so as to be openable and closable. Each outlet 7 has
A breathing gas supply pipe 23 extending from the breathing gas supply source 1 along the outer wall is connected. The breathing gas supply pipe 23 allows the breathing gas from the breathing gas supply source 1 to each outlet 7 individually. Supplied.

The exhaust gas treatment facility 5 is provided adjacent to the incinerator 3 and has an outer wall 27 of a substantially rectangular parallelepiped-shaped treatment facility body 26 protruding upward from the installation face 15 and adjacent to the installation face 15. The outlet 7 and an inlet / outlet 28 are provided in the vicinity of the outlet 7, and a breathing gas is supplied to the outlet 7 by a breathing gas supply pipe 29 branched from the breathing gas supply pipe 23. Further, the inlet / outlet port 28 has an opening 30 and a door 31 for opening and closing the opening portion similarly to the inlet / outlet port 18 of the incinerator 3, and the operator 9 can open and close the opening 31 through the inlet / outlet 28.
The internal space 4 of 6 can be moved in and out for maintenance and the like.

FIG. 2 is a diagram showing a specific structure of the breathing gas guiding means 12, and FIG. 3 is a diagram showing a state in which the breathing gas guiding means 12 is mounted on the worker 9. The breathing gas guiding means 12 described above includes the dust mask 10, a waist band 33 attached to the waist of the worker 9, and the waist band 33.
The intermediate connection hose 35, which is a third conduit provided between the intermediate connection hose 34 of the dust mask 10 and the intermediate connection hose 35, and the intermediate pressure hose 35 are detachably bundled. Harness 36 and an extension hose 37 that is a second conduit provided between the relay connector 34 and the socket terminal 6 of the outlet 7.

A plug terminal 38 is detachably connected to the socket terminal 6 at one end of the extension hose 37. The dust mask 10 includes a face body 41 airtightly mounted on the face of the worker 9, the lung force valve 8 provided on the face body 41, the exhalation valve 8a, and the left side portion of the face body 41 (in FIG. 2, the lung force valve). 8) on the right side of FIG. 8).

The lung force valve 8 is realized by a pressure demand valve and can keep the inside of the mask at a positive pressure of about 300 Pa. Breathing gas is supplied to the extension hose 37 from the breathing gas supply source 1 at about 0.6 MPa. Clean air is used as the breathing gas.

The worker 9 wears protective clothing 43, protective shoes 44, and protective gloves 45 that cover the head, wears the above-mentioned breathing gas guiding means 12 thereon, and wears a protective helmet 46 on the head. When installed, the combustion chamber 2 and the exhaust gas treatment facility 5 in the incinerator 3 are isolated from the outside air.
Work is carried out in the internal space 4 for maintenance and inspection. At this time, the plug terminal 38 of the extension hose 37 is attached to the socket terminal 6 of the outlet 7 installed on the working floor, and the worker 9 moves to the work position in the combustion chamber 2 and the internal space 4 while extending the extension hose 37. Then, the work can be continuously performed for a long time.

FIG. 4 is a system diagram showing a schematic configuration of the respiratory gas supply source 1. The above-mentioned breathing gas supply source 1 is provided with a pre-filter 51, a compressor 52, a temperature / humidity adjusting means 53, an air filter 54, a sterilizing filter 55, a pressure adjuster 56 and a deodorizing filter 57 in this order. The pre-filter 51 is provided in front of the input port for taking in the outside air of the compressor 52, and removes relatively large dust such as dust floating in the air. Compressor 5
The air discharged from the second output port passes through the temperature / humidity adjusting means 53 and is adjusted to a preset temperature and humidity. The temperature / humidity adjusting means 53 includes a cooler also called an aftercooler and a dehumidifier also called an air dryer.

The air, the temperature and humidity of which are optimally adjusted by the temperature / humidity adjusting means 53, is removed by the air filter 54 from dust not removed by the pre-filter 51, and is realized by, for example, a hepa filter. After being sterilized by the sterilization filter 55 and further adjusted by the pressure regulator 56 to a predetermined pressure, for example, about 0.6 MPa, the odor component is removed by passing through the deodorization filter 57, and then the breathing gas is used. It is guided to the supply pipes 23 and 29, respectively, and is supplied to each outlet 7.

FIG. 5 is an exploded perspective view showing an example of the outlet 7. The outlet 7 includes a plurality (three in the present embodiment) of socket terminals 6, a horizontally long hollow rectangular parallelepiped casing 61 in which the respective socket terminals 6 are accommodated in a row in a row at equal intervals. Header 6 connected to one end of a branch pipe 62, which is branched and connected to the breathing gas supply pipe 23 or 29, on the downstream side in the flow direction of the breathing gas.
3 and 3.

The casing 61 has a hollow box-shaped casing body 64 whose one side surface is open, and a front panel 66 which is detachably attached to the periphery of the opening of the casing body 64 by a plurality of screws 65. Front panel 6
6, the socket terminals 6 are provided at equal intervals in the lateral direction which is the longitudinal direction of the front panel 66, and an alarm lamp 67 is provided near the one end in the longitudinal direction. The alarm lamp 67 lights up or blinks when the pressure of any one of the socket terminals 6 falls below a predetermined supply pressure, and the breathing gas leaks due to breakage or separation of the hoses 36 and 37. The abnormal state of No. 1 is notified and it can be recognized from the outside that the breathing gas is not normally supplied to the worker 9 working in the combustion chamber 2 or the internal space 4. .

Each socket terminal 6 has an insertion port 68 into which the plug terminal 38 is inserted at the time of use, and the plug terminal 38 is pushed into the insertion port 68 to be mounted on the outer peripheral portion of the plug terminal 38. A locking piece (not shown) is fitted and locked in the locking groove 69 so that the plug terminal 38 is not easily separated from the socket terminal 6 by the tension of the hose 37. Further, in order to remove the plug terminal 38 from the socket terminal 6, the annular locking release member 70 protruding from the front panel 66 is pressed to disengage the locking piece from the locking groove 69 and release the locked state. Then, the plug terminal 38 can be pulled out from the insertion port 68.

In the state where the plug terminal 38 is inserted and locked in the insertion port 68, the tip portion 71 of the plug terminal 38 presses the valve body of the intake valve built in the socket terminal 6 in the opening direction, Breathing gas is guided from the socket terminal 6 to the hose 37 via the plug terminal 38. Further, as described above, when the locked state is released by pressing the lock release member 70 and the plug terminal 38 is pulled out, the valve body of the check valve is returned to the closed state by the spring force of the return spring (not shown), It is configured to prevent leakage of breathing gas.

The header 63 has a right cylindrical main body 73 connected to one end of the branch pipe 62, and a plurality of (3 in this embodiment) nipples 74 projecting from the outer peripheral surface of the header main body 73. Have. One end of a flexible connecting tube 75 is connected to each nipple 74,
The other end of each connection pipe 75 is connected to each socket terminal 6.

In this way, each outlet 7 is supplied with the breathing gas from the breathing gas supply pipes 23 and 29 through the branch pipe 62, and the worker 9 connects the plug terminal 38 to the socket terminal 6 during use. As a result, the breathing gas can be guided to the lung force valve 8 of the dust mask 9 via the hose 37, the relay connector 34, and the hose 36 to be inhaled.

FIG. 6 is a sectional view showing a specific structure of the relay connector 34. The relay connector 34 includes a main body 81 attached to the waist band 33, a quick joint 82 that detachably connects the other end of the extension hose 37 to the main body 81, and a main body 81 that is substantially parallel to the quick joint 82. And a horn generator 83 that is detachably screwed. The main body 81 is a main body block 84 made of an aluminum alloy forging, and is detachably screwed to the main body block 84, and one end of the intermediate pressure hose 35 is connected to the downstream pipe joint 85 and the main body block 84.
An upstream pipe joint 86 that is detachably screwed to the downstream pipe joint 85 and is detachably screwed to the downstream pipe joint 85, and a cap 87 that is detachably screwed to the main body block 84 adjacent to the downstream pipe joint 85. , And a bolt 88 for holding the sleeve 144.

The main body block 84 has a first screw hole 89 into which the downstream pipe joint 85 is screwed, a second screw hole 90 into which the upstream pipe joint 86 is screwed, and a third screw into which the cap 87 is screwed. Hole 91, fourth screw hole 92 into which screw portion 83a of horn generator 83 and bolt 88 are screwed, valve chamber 93 formed between first and second screw holes 89, 90, third and fourth
A piston chamber 94 formed between the screw holes 91 and 92, and the valve chamber 93 between the third and fourth screw holes 91 and 92.
And a pressure adjusting chamber 95 formed closer to the fourth screw hole 92.

The downstream side pipe joint 85 is inserted into one end of the intermediate pressure hose 35 and connected, and the connecting portion 101 and the flange portion 1 are connected.
02, the seal mounting portion 104 to which the annular seal member 103 is mounted, the screw portion 105, the through holes 106a are formed at intervals of 90 ° in the circumferential direction on the plane perpendicular to the axis, and the valve chamber is formed. Through hole portion 106 and through hole portion 1 projecting into 93
The holding portion 109 is formed on the smaller diameter side than 06, is fitted with the seal member 107, and is fitted into the axial direction one end portion on the large diameter side of the cylindrical conical dust removing filter 108, and the outer peripheral surface is formed into the truncated cone shape. A guide part 109 fitted in one end of the dust removal filter 108 on the large-diameter side in the axial direction and a spring receiving projection 112 to which a first spring 111 for pressing the ball valve 110 is mounted are arranged in this order in the axial direction. Are formed integrally with each other.

In such a downstream side pipe joint 85, a ventilation hole 114 is formed from the connecting portion 101 to the holding portion 113. The vent holes 114 have the through holes 10 described above.
One end of 6a in the radial direction is opened, and the other end of each through hole 106a in the radial direction is opened on the outer peripheral surface of the through hole portion 106. Therefore, the ventilation hole 114 communicates with the valve chamber 93 through each through hole 106a.

The other end in the axial direction on the small diameter side of the dust removing filter 108 is provided with a main body block 8 via a seal member 115.
Supported by 4. The valve chamber 93 is provided with the dust filter 108.
And each sealing member 107, 115 divides the inner space 116 and the outer space 117 into which the breathing gas from the extension hose 37 is supplied. Each through hole 106a described above
Communicates with the outer space 117, and the dust filter 108
Only the clean breathing gas that has been dedusted by is passed through and is supplied to the intermediate pressure hose 35 from the ventilation hole 114.

As described above, the dust removing filter 108 is formed into a cylindrical shape, the valve chamber 93 is partitioned into the inner space 116 and the outer space 117, and the breathing gas is passed from the inner space 116 to the outer space 117. A wide area around the entire circumference of 108 can be used for dust collection, and the dust removal filter 1
It is possible to reduce the pressure loss due to the passage of the breathing gas through 08. Further, since the guide portion 109 is formed in a truncated cone shape, it faces the upstream side (downward in FIG. 6) in the flow direction of the breathing gas between the inner peripheral surface of the dust removal filter 108 and the outer peripheral surface of the guide portion 109. A ring-shaped airflow guide space 118 is formed which expands in the above and forms a part of the inner space 117. By this airflow guide space 118, the entire inner peripheral surface of the dust removal filter 108 is exposed so as to face the inner space 116, and the entire dust removal filter 108 can be effectively used to capture dust and other fine particles in the breathing gas. it can.

As described above, since the dust can be removed using a wide area around the entire circumference of the dust removing filter 108, the dust removing filter 108 itself can be used for a long period of time until it becomes unusable due to clogging, and therefore the dust removing filter 108 can be used. The number of times the filter 108 needs to be replaced can be reduced, and maintenance work can be reduced.

The upstream side pipe joint 86 has a second screw hole 90.
The screw portion 121 screwed to the shaft, the seal mounting portion 123 to which the annular seal member 122 is mounted, the engaging portion 124 to which a tightening tool such as a spanner is engaged, and the connecting portion 125 to be inserted into the quick joint 82 are in the axial direction. Are integrally formed in this order. A conical trapezoidal valve seat 126 is formed at one end of the threaded portion 121 in the axial direction on the valve chamber 93 side, the valve seat 126 expanding toward the valve chamber 93.
The ball valve 110 pressed by the spring 111 in the closing direction (downward in FIG. 6) is seated, and the valve hole 127 surrounded by the valve seat 126 is closed. The valve hole 127 communicates with a vent hole 128 that extends axially from the screw portion 121 to the connecting portion 125.

The supply pressure P1 of the breathing gas supplied from the extension hose 37 to the vent hole 128 in the state where the quick joint 82 is connected to the connecting portion 125 of the upstream side pipe joint 86.
Is about 0.4 to 0.5 MPa. In addition, the first spring 11
The spring force F1 of 1 is that the differential pressure ΔP = 0.
The ball valve 110 is set to open when the pressure decreases by 01 MPa. The ball valve 110 is made of a material having a small specific gravity and weather resistance in order to obtain high responsiveness. As such a material, for example, silicone rubber is used.

In the piston chamber 94, the piston 131
Are slidably accommodated in the axial direction. Piston 13
1, a spring receiving recess 132 is formed at one end in the axial direction, and a protrusion 133 is formed at the other end in the axial direction, and an annular packing 135 is formed in a body portion 134 between the spring receiving recess 132 and the protrusion 133. An annular recessed groove 136 into which is fitted is formed. By such a piston 131, the piston chamber 94 is partitioned into a spring chamber 137 and a pressure chamber 138.
The spring chamber 137 accommodates the second spring 139, and the pressure chamber 1
38 communicates with the outer space 117 of the valve chamber 93 by the bypass passage 140, and the clean breathing gas dedusted through the dust removal filter 108 is guided.

The pressure adjusting chamber 95 communicates with the piston chamber 94 through a shaft hole 143. The pressure adjusting chamber 95 is provided with a sleeve 144, a pressure adjusting valve 145, and a third spring 146. The large diameter portion 153 of the sleeve 144 has the shaft hole 1
A recess 148 opened to the side of 43 and into which an annular seal member 147 is fitted, a guide hole 149 penetrating in the axial direction of the sleeve 144 and accommodating the pressure regulating valve 145 movably in the axial direction, and a guide hole 149. Piston chamber 1 coaxially connected to the hole 149
50 and a radial hole 151 that extends from the midway position of the piston chamber 150 in the direction of one radial line and opens on the outer peripheral surface.

The seal member 147 of the large diameter portion 153.
At the other end in the axial direction on the side opposite to the one end in the axial direction where is provided, a small cylindrical projection 152 having a right cylindrical shape is coaxially and integrally formed, and the piston chamber 150 penetrates. The outer peripheral surface of the large diameter portion 153 has a right cylindrical shape, and between the outer peripheral surface and the inner peripheral surface of the main body block 84 facing the pressure adjusting chamber 95,
An annular space 154 is formed, and the radial holes 151 communicate with each other.

The pressure regulating valve 145 is provided in the piston chamber 94.
A head 157 disposed inside the head 131, which abuts the protrusion 133 of the piston 131, and a shaft 158 which is inserted through the shaft hole 143 and has a diameter smaller than that of the head 157, and a truncated cone-shaped valve body toward the shaft 158. 159, a piston rod 160 which is movably inserted in the guide hole 149 in the axial direction, and a piston rod 160.
A spring seat 161 having an arcuate notch provided near the other end in the axial direction is integrally formed in this order in the axial direction. The piston chamber 150 communicates with the spring receiving recess 166 by the notch of the spring receiving seat 161.

The bolt 88 has a cylindrical portion 167 having a right cylindrical shape which forms a spring receiving recess 166 into which the small-diameter projection 152 of the sleeve 144 is inserted / removed, and the cylindrical portion 1.
67 and a threaded portion 168 that is formed integrally and coaxially.
Have and. The cylindrical portion 167 has the same outer diameter as the large diameter portion 153 of the sleeve 144. The screw portion 168 is provided with a horn ventilation hole 169 which penetrates the spring receiving recess 166 in the axial direction.

The third spring 146 is provided in the spring receiving recess 166 of the bolt 88 and the spring chamber 163 of the sleeve 144.
Is stored. The other end of the third spring 146 in the axial direction, which projects from the spring seat 161 of the piston rod 160 of the pressure regulating valve 145, is fitted into one end of the third spring 146.
Supported by. The other end of the third spring 146 is fitted in the spring receiving recess 166 of the bolt 168 and is supported by the bottom surface of the spring receiving recess 166.

The spring force F2 of the second spring 139 and the spring force F3 of the third spring 146 are such that the pressure in the pressure chamber 138 is supplied from the breathing gas supply source 1 via the hoses 36 and 37. Supply gas supply pressure P1 (= 0.4 to 0.5
When the pressure becomes lower than the predetermined alarm sound generation pressure P2, which is lower than the minimum pressure Pmin in use by about 0.01 MPa due to the suction force, the spring force F2 of the second spring 139 becomes the third pressure. The spring force F3 of the spring 146 is overcome and F2> F3, and the pressure regulating valve 145
Is pressed by the piston 131, and the pressure regulating valve 145 is displaced to the other end side in the axial direction of the sleeve 144 against the spring force F3 of the third spring 146. Therefore, the valve body 159 separates from the seal member 147 to open the valve hole, and the pressure chamber 138
The breathing gas in the piston chamber 150 from the shaft hole 143, the spring seat 161 having an arcuate cutout, the spring seat recess 16
6 and the horn ventilation hole 169, the horn sound is supplied to the horn generator 83 to generate a horn sound.

The horn sound generation pressure P2 at which the horn sound is generated in this manner is selected to be a low pressure that cannot be generated even if the worker 9 wears the dust mask 10 and strongly sucks it, for example, 0.3 MPa. Be done. This horn sound generation pressure P2 is
It can be adjusted by inserting a shim having an appropriate thickness between the cap 87 and the second spring 139. It is possible to notify the worker and the surrounding workers that an abnormality such as a failure of the compressor of the respiratory gas supply source 1 and a damage to the hose 11 has occurred due to the generation of the horn by the horn generator 83. .

FIG. 7 is a sectional view showing the internal structure of the horn generator 83, and FIG. 8 is a front view of the horn sound generating member 171 of the horn generator 83 as viewed from the right side of FIG. The horn generator 83 has a horn sound generating member 171, a connecting member 172 screwed into the fourth screw hole 92, a sealing member 173, and a cover body 174. The horn sound generating member 171 has a substantially cylindrical shape with a bottom and a cylindrical portion 175 and a cylindrical portion 175.
And a bottom portion 176 that closes one axial end portion of the. Tube 1
75 includes an end face 177 perpendicular to the axis and the end face 177.
A notch 179 is formed by an inclined surface 178 that is inclined in a direction intersecting with the axis as it approaches from the other end side in the axial direction (downward in FIGS. 7 and 8). In the region where the inclined surface 178 of the cylindrical portion 175 is formed, the inclined surface 1
78 and the inner peripheral surface 180 intersect, and the lead portion 181 is tapered so as to face the notch 179 from the other end side in the axial direction.
Is formed. Such a horn sound generation member 171 has a smaller diameter than the cover body 174, and the horn sound generation member 171
An annular space 189 is formed between the outer circumferential surface of the cover body 174 and the inner circumferential surface of the cover body 174.

The cover body 174 is formed with a threaded portion 182 on the inner peripheral surface of which one end in the axial direction is engraved with an internal thread and an intermediate portion between both end portions in the axial direction with a circumferential interval. It has a plurality of (four in this embodiment) through holes 183, and the other end in the axial direction is opened. Each through hole 183 is provided at the other end portion in the axial direction slightly from the axial position where the lead portion 181 of the horn sound generating member 171 is formed, that is, at a position displaced downward in FIG. The horn sound generated by the vibration of is easily transmitted to the outside through each through hole 183.

The connecting member 172 is engraved with an external thread and is screwed into the fourth screw hole 92 to form the first screw portion 18.
4, a seal portion 185 having a right cylindrical outer peripheral surface, a flange portion 186, an outer screw, a second screw portion 187 to which the screw portion 182 of the cover body 174 is screwed, and a horn sound generating member 171. A connecting portion 188 to which one axial end portion of which is fitted and connected to the outside is integrally formed in the axial direction. A central hole 190 is formed in the connecting member 172 from the first screw portion 184 to the connecting portion 188. One end of the central hole 190 opens on the end surface 191 of the first screw portion 184, and the other end passes through a ventilation hole 192 extending in one radial direction of the connecting portion 188, and then extends axially to the outer peripheral portion of the connecting portion 188. It communicates with the recessed groove 193 extending along. This groove 193
Since the horn sound generation member 171 is attached to the connection portion 188, the connection portion 1 is attached by the inner peripheral surface of the horn sound generation member 171.
The opening on the outer peripheral surface of 88 is covered, and only one injection port 194 in the circumferential direction on the outer peripheral portion of the connecting portion 188 is open toward the other end portion in the axial direction of the connecting portion 188.

Since the breathing gas injected from the injection port 194 needs to be blown to the lead portion 181, an annular notch is formed in the base end portion of the connecting portion 188 which is continuous with the second screw portion 187. The groove 195 is formed and filled with the adhesive 196, and in this state, the horn sound generating member 171 is provided in the connection portion 188, and the lead portion 181 includes the injection port 194, the connection portion 188, and the common axis line of the horn sound generation member 171. The horn sound generation member 171 is fixed to the connecting portion 188 by positioning and mounting so as to be arranged on a virtual one plane and curing the adhesive 196.

As described above, the pressure regulating valve 145 is opened,
The bolt 88 and the connecting member 172 are passed through the horn ventilation hole 169.
When the breathing gas is supplied to the gap space 197 (see FIG. 6) between and, the breathing gas passes through the central hole 190 and the ventilation hole 192 of the connecting member 172 and then from the injection port 194 of the concave groove 193. It is jetted toward the lead portion 181.
At this time, as described above, the injection port 194 and the lead portion 18
1 and 1 are arranged on the virtual plane, the injection port 19
The breathing gas injected from No. 4 is always lead portion 181.
As a result, a clear horn sound can be reliably generated from the lead portion 181.

FIG. 9 is a front view of the outside air introducing means 42, FIG. 10 is a sectional view taken along the section line XX of FIG. 9, and FIG. 11 is a section view of the section line XI-XI of FIG. FIG. The outside air introduction means 42 is a plug body 202 that opens and closes an opening 201 that is exposed to the outside and can be opened and closed from the outside in a state where the dust mask 10 is attached to the head of the worker 9.
An opening valve 203 is provided between the opening 201 and the intake valve 203 and an intake valve 203 that opens in the direction in which the outside air is introduced by the intake pressure to prevent the air in the mask from leaking when the plug 202 is opened. The dust removing filter 204 is included.

The outside air introducing means 42 includes a dust remover 207 which is detachably and airtightly mounted from the outside to the external mounting cylinder 205 on the left side of the face 41 when viewed from the wearer side, and the left side of the face 41. Portion is roughly divided into an intake valve 203 which is detachably and airtightly mounted from the inside to an inner side mounting cylinder portion 206 projecting into the face body 41 on the side opposite to the outer side mounting cylinder portion 205. The dust remover 207 is the dust remover 20.
4, the filter pack 208 is accommodated, the filter pack 208 is accommodated, the external case 209 having the opening 201, and the flexible emergency operation cap 210 having the plug body 202 are provided.

The outer case 209 is a case body 211.
And the lid 21 that is detachably attached to the case body 211.
2 and. The case main body 211 has an inner peripheral wall 213 having an outer thread formed on an outer peripheral part thereof, and an annular bottom wall 214 connected to one axial end of the inner peripheral wall 213 by being bent inward in the radial direction.
And a connecting tubular portion 215 that extends coaxially with the inner peripheral wall 213 from the inner peripheral end radially inward of the bottom wall 214 to the side opposite to the inner peripheral wall 213, and has an outer thread engraved on the outer peripheral portion.

The lid 212 has an outer peripheral wall 216 having an inner thread formed on the inner peripheral portion, and a front wall 217 connected to the other end of the outer peripheral wall 216 in the axial direction by being bent inward in the radial direction. The front wall 217 includes an annular flat portion 218 which is bent and connected to the outer peripheral wall 216 perpendicularly to the axis line, and a flat portion 2
A bulging portion 219 in which a part of a spherical surface is convex and bulges outward from the inner peripheral edge of the radial inner side of 18, that is, in the direction away from the bottom wall 214, and the opening 201 is formed in the center. Have and. These case body 211 and lid 2
12 is made of synthetic resin or polypropylene, for example.

FIG. 12 is a plan view for explaining a specific structure of the emergency operation cap 210, and FIG. 13 is a plan view.
FIG. 14 is a cross-sectional view of the emergency operation cap 210 seen from below, and FIG. 14 is an emergency operation cap 2 seen from below in FIG.
It is a rear view of a part of 10. The emergency operation cap 21
0 is the plug 202 and one direction from the plug 202 (see FIG.
2 to the left side of FIG. 15), and a first connecting portion 221 having a predetermined first width B1 and a first connecting portion 221.
From the plug body 202 to the other direction opposite to the one direction, and a predetermined second width B2. The second connecting portion 223 and the connecting tubular portion 2 of the case main body 211 that are continuous from the second connecting portion 223 in the other direction.
An annular mounting portion 224 through which 15 is gently inserted is integrally formed. Such an emergency operation cap 210
Is made of a flexible, resilient, and weather resistant material such as silicone rubber.

The stopper 202 has an engaging peripheral edge portion 225 (FIGS. 10 and 1) which faces the opening 201 of the lid 212.
Engagement groove 226 into which (see 1) is fitted is formed over the entire circumference in the circumferential direction. The first and second connecting portions 221 and 223 are connected to one surface side of the plug body 202, and the lower peripheral edge portion 227 facing the engagement groove 226 from below in FIG. 13 is integrally formed on the other surface side. Is formed. The lower peripheral edge portion 227 has the first and second connecting portions 221 and 223.
In the vicinity of the region in which the protrusion is formed, the retaining protrusion 228a protruding from the lower peripheral edge portion 227 in the one direction and the other direction,
228b is integrally formed.

The inner diameter D1 of the annular mounting portion 224 is
It is larger than the outer diameter D2 of the base end portion of the connecting tubular portion 215 (D1
> D2). Accordingly, the mounting portion 224
Is the left side of the face piece 41 and the bottom wall 2 of the outer case 209.
It is rotatably held around the axis of the connecting tube portion 215 between the connecting tube portion 215 and the connecting tube portion 14. Therefore, at the time of work, the stopper 202 is attached to the opening 201, and the grip 222 is
Cannot be breathed by the breathing gas from the breathing gas supply source 1 because it partially protrudes above the upper end portion of the outer case 209 when viewed from the front in a state where it faces upward from the opening 201. When an emergency occurs, the worker 9 grasps the grasping portion 222 with his / her fingers and pulls it down diagonally forward, thereby opening the plug body 202 in the opening portion 201.
From the inside of the combustion chamber 2 of the incinerator 3 or the internal space 4 of the exhaust gas treatment equipment 5 to the outside by injecting air into the face piece 41 cleanly by the outside air introduction means 42 to easily and quickly separate Can be evacuated.

Further, as described above, the plug body 202 has the opening 20.
In a state where the emergency operation cap 210 is not attached to the No. 1, the emergency operation cap 210 hangs down by its own weight so that the grip portion 222 is arranged at the lowest position, and is in a substantially flat state along a vertical imaginary plane by its own elastic recovery force. Since the worker 9 can grasp the grip portion 222 with fingers and push the plug body 202 into the opening portion 201, the worker 9 can mount it.
The work of mounting the stopper 202 in the opening 201 can be easily performed.

FIG. 15 shows an air jet shower room 231.
It is a perspective view of a part of FIG. After finishing a predetermined work in the combustion chamber 2 or the internal space 4, the worker 9 goes out from the combustion chamber 2 or the internal space 4 and keeps the dust mask 10 attached to the socket terminal of the outlet 7. 6, the plug terminal 38 is pulled out and wound around, and the opening portion 201 is opened by grasping the grasping portion 222 of the emergency operation cap 210 and pulling it obliquely forward and downward, and the outside air introducing means from the breathing gas supply source 1 The supply path of the breathing gas is switched to 42. In this state, dust is attached to the protective mask 10, the protective clothing 43, the protective shoes 44, the protective gloves 45, the protective helmet 46, etc. worn by the worker 9,
Since harmful substances such as dioxin may be attached to the dust, air jets that are jetted at high speed from the plurality of nozzles 232 are blown to the whole body in the air jet shower chamber 231 to remove the dust.

As described above, even when the breathing gas from the breathing gas supply source 1 cannot be used, the exhaled air can be introduced into the face piece 41 by the outside air introduction means 42 to breathe. Air jet shower room 23
There is no need to provide a means for securing a breathing gas such as separately installing a breathing gas supply device such as an air cylinder in the inside of 1, and the facility can be simplified.

In another embodiment of the present invention, an outlet is not provided at a predetermined position when the building is small, and the first
It is possible to supply the respiratory gas to the lung force valve of the dust mask through the relay connector and the third conduit by connecting the second conduit to the respiratory gas supply source without providing the conduit.

FIG. 16 is a sectional view of the outside air introducing means 42 of the dust / gas mask 250 provided in the dust / gas breathing support equipment according to another embodiment of the present invention. This FIG. 16 corresponds to FIG. 10 described above. FIG. 17 is a sectional view of the outside air introducing means 42 shown in FIG. This FIG.
Corresponds to FIG. 11 described above. Other configurations of the embodiment of the present invention shown in FIGS. 16 and 17 are similar to those of the embodiment of FIGS. 1 to 15 described above, and corresponding parts are designated by the same reference numerals. It should be noted that in this embodiment, instead of the dust remover 207 described above, a dust remover / poison preventer 25
1 is used. In the filter pack 208 that can open and close the dust remover / poison eliminator 251, the dustproof filter 204 arranged on the outside air side (downward in FIG. 16) and the dustproof filter 2 are provided.
A gas proof filter 252 arranged on the downstream side of the outside air (upper side in FIG. 16) than 04 is separably laminated in this order and incorporated. Dust filter 204 and gas filter 25
2 is a substantially flat plate shape, and both 204 and 252 can be separated. A filter bag 208 including these filters 204 and 252 is housed in an outer case 209, and the outer case 209 includes a case body 211 and a lid 212 detachably attached to the case body 211.
Have and. The external thread of the connecting cylinder part 215 to the case body 211 and the internal thread of the outer peripheral wall 216 of the lid body 212 are loosened to separate the case body 211 and the lid body 212, and the filter pack 208 is opened and stored. Filter 20
4,252 can be replaced and replaced. In particular, the gas filter 252 can be selected and replaced depending on the type of toxic gas to be removed. When the toxic gas is dioxin, for example, the gas filter 252 contains activated carbon particles, and when the organic gas to be removed is another type, the gas filter 252 type is also changed. In this way, the gas filter 252 can be removed and replaced so that the gas filter 2 can be replaced.
The present invention is widely practiced in order to remove various toxic gases by using the components other than 52 in common.

FIG. 18 shows a dust-proof / gas-proof breathing support facility according to still another embodiment of the present invention.
4 is a cross-sectional view of the outside air introducing means 42 of the gas mask 250. FIG.
This FIG. 18 corresponds to FIG. 10 and FIG. 16 described above.
FIG. 19 is a sectional view of the outside air introducing means 42 shown in FIG. FIG. 19 corresponds to FIGS. 11 and 17 described above. Other configurations in the embodiment of the present invention shown in FIGS. 18 and 19 are similar to those in the embodiments in FIGS. 1 to 17 described above, and corresponding parts are designated by the same reference numerals. It should be noted that in this embodiment, the dust remover / gas proof device 2
The dustproof / gasproof filter 301 housed in the openable / closable filter pack 208 of 51 is a dustproof filter arranged on the outside air side (lower side in FIG. 18) and a downstream side of the outside air (upper side in FIG. 18) than this dustproof filter. The gas filter and the gas filter are integrally laminated in this order, and the dust filter and the gas filter cannot be separated from each other. The present invention is widely practiced to remove various toxic gases by removing and replacing the dustproof / gasproof filter 301. That is, the dustproof filter and the gasproof filter are integrally laminated. As a result, the dustproof filter and the gasproof filter cannot be separated from each other. The dustproof / gasproof filter having such a configuration can be selectively replaced depending on the type of toxic gas to be removed. Other configurations are similar to those of the embodiment shown in FIGS. 16 and 17 described above.

In yet another embodiment of the present invention, FIG.
~ In the embodiment of the present invention in FIG. 15, the dust remover 207.
A gas-proof device is used instead of the filter, and a filter pack 208 that can be opened and closed is provided in the gas-proof device of the gas mask instead of the dust mask 10.
Equipped with a gas filter housed in. The poison filter removes toxic gas from the outside air and inhales the outside air. Other configurations and operations other than the gas filter of this embodiment are the same as those of the above-described embodiment. Thus, according to the present invention, a respiratory support facility for gas proof is realized.

[0085]

According to the first aspect of the present invention, the building is provided with an outlet through which the breathing gas from the breathing gas supply source is introduced, and from this outlet, the dust mask is put on the dust mask worn by the worker. So we can supply
It is possible to work continuously for a long time in the working space of a structure, which allows the working gas to be used in the working space by using the breathing gas of the pressure vessel, as described in connection with the conventional technique. It is possible to prevent the work from being interrupted by the consumption of the breathing gas in the pressure vessel as in the case of performing the work, and it is possible to continuously perform the work in the work space for a long time. Further, unlike the conventional technique, it is not necessary for an operator to carry the pressure vessel on his / her back to the work site, so that there is no possibility that the pressure vessel interferes with the work, and the workability can be improved.

According to the second aspect of the present invention, since the alarm sound generating means is provided in the breathing gas guiding means, work is performed by breaking the hose for supplying the breathing gas to the dust mask worn by the worker. The fact that the supply of breathing gas to a worker has been cut off or reduced can be promptly notified to the worker or other workers working in the vicinity of that worker by an alarm sound, and safety is improved. You can

According to the third aspect of the present invention, since the dust mask is provided with the outside air introducing means, when the supply of the breathing gas from the breathing gas supply source is interrupted or reduced, an abnormality occurs. The worker can breathe with the clean outside air that has been dust-removed by the outside air introducing means, which can improve safety in an emergency.

According to the fourth aspect of the present invention, when the building is small, the outlet is not provided at a predetermined position, the first pipeline is not provided, and the second pipeline is connected to the respiratory gas supply source. Then, the respiratory gas can be supplied to the lung force valve of the dust mask through the relay connector and the third conduit, and workability and safety in an emergency can be improved.

According to the present invention of claim 5, a dustproof / gas mask equipped with a dustproof / gasproof filter is used, whereby not only harmful dust in the outside air is filtered but also harmful gas in the outside air is removed. It is also possible to do so.

According to the present invention described in claims 6 to 8, as in the case of the present invention described in claims 2 to 4, it is possible to achieve excellent effects in the dust- and gas-proof breathing support equipment.

According to the ninth aspect of the present invention, in the dustproof / gasproof mask, the dustproof filter and the gasproof filter are laminated in a separable manner, and the gasproof filter is selected according to the kind of toxic gas to be removed. It is replaceable, which allows the removal of various toxic gases and allows the invention to be implemented in a wide range.

According to the present invention of claim 10, dustproof /
In the gas mask, the dustproof filter and the gasproof filter are integrally laminated and configured, that is, the dustproof filter and the gasproof filter are inseparable from each other. Selectable replacement depending on the type of toxic gas to be removed,
This can remove various toxic gases,
The present invention can be widely applied.

According to the present invention as set forth in claim 11, the present invention is carried out to remove toxic gas in the outside air by using a gas mask.

According to the present invention described in claims 12 to 14,
Similar to the present invention described in claims 2 to 4 and 6 to 8, it is possible to achieve excellent effects in the gas-assisted breathing support equipment.

According to the fifteenth aspect of the present invention, the gas filter in the gas mask can be selectively exchanged depending on the kind of toxic gas to be removed, whereby the present invention can be widely practiced. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a dust-proof breathing support facility according to an embodiment of the present invention.

FIG. 2 is a diagram showing a specific configuration of a breathing gas guiding means 12.

FIG. 3 is a view showing a state in which a breathing gas guiding means 12 is attached to an operator 9.

FIG. 4 is a system diagram showing a schematic configuration of a respiratory gas supply source 1.

FIG. 5 is an exploded perspective view showing an example of an outlet 7.

FIG. 6 is a cross-sectional view showing a specific configuration of a relay connector 34.

FIG. 7 is a sectional view showing the internal structure of the horn generator 83.

FIG. 8 shows a horn sound generating member 171 of the horn generator 83 shown in FIG.
It is the front view seen from the right side.

FIG. 9 is a front view of an outside air introducing unit 42.

10 is a sectional view taken along the section line XX of FIG.

11 is a cross-sectional view taken along the section line XI-XI in FIG.

FIG. 12 is a plan view for explaining a specific configuration of the emergency operation cap 210.

FIG. 13 is an emergency operation cap 21 as seen from below in FIG.
It is sectional drawing of 0.

FIG. 14 is an emergency operation cap 21 viewed from below in FIG.
It is a rear view of a part of 0.

FIG. 15 is a perspective view of a part of an air jet shower room 231.

FIG. 16 is a cross-sectional view of the outside air introducing means 42 of the dust / gas mask 250 provided in the dust / gas breathing support equipment according to another embodiment of the present invention.

17 is a cross-sectional view of the outside air introducing means 42 shown in FIG.

FIG. 18 is a dust / gas mask 2 provided in a dust / gas breathing support facility according to still another embodiment of the present invention.
It is sectional drawing of the external air introduction means 42 of 50.

19 is a cross-sectional view of the outside air introducing unit 42 shown in FIG.

[Explanation of symbols]

1 Respiratory gas supply source 2 combustion chamber 3 incinerator 4 Internal space 5 Exhaust gas treatment equipment 7 outlets 8 lung valve 9 workers 10 dust mask 29 Breathing gas supply pipe 34 Relay connection tool 35 Medium pressure hose 37 Extension hose 38 plug terminals 42 Outside air introduction means 83 horn generator 108,204 Dust filter 110 ball valve 111 first spring 131 pistons 139 Second spring 140 Bypass passage 146 Third spring 171 Sounding member for horn 201 opening 202 plug 203 intake valve 204 dust filter 210 Emergency operation cap 250 dust and gas mask 251 dust remover 252 Gas filter 301 Dustproof / gasproof filter

Front page continuation (72) Inventor Masaaki Okayama 16-2, Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Kawashige Disaster Prevention Industry Co., Ltd. Kobe Headquarters / Headquarters factory (56) Reference JP-A-54-152391 (JP, A) ) JP-A-54-153920 (JP, A) JP-A-10-85348 (JP, A) Actually opened 57-105486 (JP, U) Actually opened 58-153851 (JP, U) JP-B 48- 1981 (JP, B1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A62B 7/04 A62B 9/00 A62B 18/02 A62B 18/10

Claims (15)

(57) [Claims] 1. A dust-supporting breathing support facility in which an outlet is provided at a predetermined position of a building, and breathing gas is supplied to this outlet from a breathing gas supply source through a first pipe line, the inspiratory pressure A flexible valve that introduces breathing gas, an exhalation valve that discharges exhaled air by exhalation pressure, a dust mask that has a dust filter that filters harmful dust in the outside air and inhales the outside air, and has flexibility. A second conduit whose one end is detachably connected to the outlet; a third conduit which is flexible and has one end connected to the pulmonary valve of the dust mask; A first connecting portion to which the other end of the passage is detachably connected, and a second connecting portion to which the other end of the third pipeline is connected and communicates with the first connecting portion; Inhalation pressure guides breathing gas from the first connection to the second connection between the second connections. A dust-supporting breathing support facility, comprising: a relay connector in which a check valve that opens in an inserting direction is interposed. 2. The relay connector includes an alarm sound generating means for generating an alarm sound when the pressure of the breathing gas introduced from the outlet to the lung valve falls below a predetermined set pressure. The dust-supporting respiratory support equipment according to claim 1. 3. A plug body for opening and closing the opening facing the outside so that the dust mask can be opened and closed from the outside, and the dust mask is opened in a direction in which outside air is introduced by intake pressure in the opened state. A breathing support equipment for dust prevention according to claim 1 or 2, further comprising: an outside air introducing means having an intake valve that is closed by an expiratory pressure and a dust filter provided between the opening and the intake valve. . 4. The dust-supporting breathing assistance facility according to claim 1, wherein one end of the second conduit can be connected to the breathing gas supply source. 5. A dust-proof / poison-breathing breathing support facility in which an outlet is provided at a predetermined position of a building, and breathing gas is supplied to the outlet from a breathing gas supply source through a first pipeline. A lung force valve that introduces breathing gas by atmospheric pressure, an exhalation valve that discharges exhaled air by expiratory pressure, a filter that removes harmful dust in the outside air, removes harmful gas in the outside air, and inhales the outside air. A dust / gas mask equipped with a dust / gas filter, a flexible second pipe whose one end is detachably connected to the outlet, and a flexible, one end of the dust / gas mask. The third conduit connected to the pulmonary valve of the gas mask, the first connecting portion to which the other end of the second conduit is detachably connected, and the other end of the third conduit are connected, A second connecting portion that communicates with the first connecting portion, and between the first and second connecting portions, A dust-proof / gas-proof breathing support facility, comprising: a relay connector in which a check valve that opens in a direction of introducing the breathing gas from the first connecting portion to the second connecting portion by an intake pressure is interposed. 6. The relay connector includes alarm sound generating means for generating an alarm sound when the pressure of the breathing gas guided from the outlet to the lung force valve falls below a predetermined set pressure. The dust-proof / gas-proof respiratory support equipment according to claim 5. 7. The dustproof / gasproof mask has a plug body that covers an opening that is exposed to the outside so as to be openable and closable from the outside, and a direction in which outside air is introduced by intake pressure with the plug body open. 7. The dustproof device according to claim 5, further comprising: an outside air introducing unit having an intake valve that is opened to the outside and closed by the expiratory pressure, and a dust removing / gasproof filter provided between the opening and the intake valve.・ Respiratory support equipment for gas prevention. 8. The dust-proof / gas-proof breathing support equipment according to claim 5, wherein one end of the second conduit can be connected to the breathing gas supply source. 9. The dust-proof / gas-proof filter is constructed by stacking a dust-proof filter and a gas-proof filter arranged downstream of the dust-proof filter in the outside air in a separable manner. The gas-proof filter is a poisonous filter to be removed. The breathing support equipment for dust / gas proof according to any one of claims 5 to 8, which can be selectively exchanged depending on the type of gas. 10. The dustproof / gasproof filter is configured by integrally stacking a dustproof filter and a gasproof filter arranged on the downstream side of the outside air with respect to the dustproof filter, and the dustproof / gasproof filter should be removed. The selective exchange is possible depending on the kind of toxic gas.
Respiratory support equipment for dust and gas proof according to one of 8. 11. A gas-assisted respiration support facility in which an outlet is provided at a predetermined position of a building, and respiration gas is supplied to the outlet from a respiration gas supply source through a first conduit, the inspiratory pressure A flexible valve that introduces breathing gas, an exhalation valve that expels exhaled air by exhalation pressure, a gas mask that has a gas filter that removes harmful gas in the outside air and inhales the outside air, and has flexibility. A second conduit having one end removably connected to the outlet, a third conduit having flexibility, one end connected to the pulmonary valve of the gas mask, and a second conduit Has a first connecting part to which the other end of the second connecting part is detachably connected and a second connecting part to which the other end of the third conduit is connected and communicates with the first connecting part. Inhalation pressure introduces breathing gas from the first connection to the second connection between the two connections. And a relay connecting device in which a check valve that opens in the direction of opening is interposed. 12. The relay connector includes an alarm sound generating means for generating an alarm sound when the pressure of the breathing gas introduced from the outlet to the lung valve falls below a predetermined set pressure. The gas-assisted breathing support equipment according to claim 11. 13. The gas mask has a plug body that opens and closes an opening that is exposed to the outside so as to be openable and closable from the outside, and is opened in a direction in which outside air is introduced by intake pressure in a state where the plug body is opened. And an intake valve that is closed by the expiratory pressure,
The gas-assisted breathing support equipment according to claim 11 or 12, further comprising: an outside air introduction unit having a dust filter provided between the opening and the intake valve. 14. The breathing gas supply source is connectable to one end of the second conduit.
Respiratory support equipment for gas prevention according to any one of 1. 15. The respiratory support equipment for gas proof according to claim 11, wherein the gas proof filter can be selectively replaced depending on the type of toxic gas to be removed.