CN112933448A

CN112933448A - Double-bag separate control type positive pressure oxygen breathing circulating gas storage device

Info

Publication number: CN112933448A
Application number: CN202110413565.2A
Authority: CN
Inventors: 董建国; 丁晓光; 董艳红
Original assignee: Fushun Huateng Protective Equipment Manufacturing Co ltd
Current assignee: Fushun Huateng Protective Equipment Manufacturing Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-06-11

Abstract

The invention relates to the technical field of personal respiratory protection, in particular to a double-bag separate control type positive pressure oxygen respiratory circulating gas storage device. In order to overcome the defects of an air bag or a breathing cabin assembled in an isolated positive pressure oxygen respirator in the prior art, the invention provides the double-bag separately-controlled positive pressure oxygen breathing circulating air storage device. The invention is mainly characterized in that the invention is composed of an expiration air bag, an inspiration air bag, a double-bag separate control clapboard, an air bag built-in tension spring and an air bag support.

Description

Double-bag separate control type positive pressure oxygen breathing circulating gas storage device

Technical Field

The invention relates to the technical field of personal respiratory protection, in particular to a double-bag separate control type positive pressure oxygen respiratory circulating gas storage device.

Background

The low-pressure gas storage part of the isolated positive-pressure oxygen respirator is divided into two types of an air bag type and a breathing cabin type according to the regulations of the current industrial standard MT867-2000 isolated positive-pressure oxygen respirator and XF632-2006 positive-pressure fire-fighting oxygen respirator in China.

The low-pressure gas storage part of the existing isolated positive-pressure oxygen respirator, no matter of an air bag type or a breathing cabin type, adopts a single-bag or single-cabin structure, so that the breathing comfort and the protection time are all limited by the gas pressure and the limited volume in the same bag (cabin), and the structure per se forms a restriction on the whole improvement of the positive-pressure oxygen breathing cycle performance: the gas pressure in the bag (cabin) is improved, the positive pressure in the system can be fully ensured, the inspiration is comfortable, and the expiration resistance is increased, the expiration is not smooth, and even the feeling of breath holding is caused; in order to reduce the expiratory resistance and improve the expiratory comfort, the expiratory pressure can be reduced only by reducing the gas pressure in the capsule (cabin), but the expired recyclable gas and the supplemented fresh oxygen are frequently and excessively exhausted and lost, so that the gas recycling rate is reduced, the protection time is shortened, and even negative pressure is generated instantly; the existing positive pressure system is generally characterized in that two to three metal positive pressure springs are arranged outside an air bag or a breathing cabin, a pressing plate is compressed to apply pressure to the metal positive pressure springs so as to keep the positive pressure in the system, and the reliability and the stability can be influenced due to factors such as fluttering of the external positive pressure springs, deviation of axial pressure center lines of the pressing plate and the like during wearing operation.

Disclosure of Invention

The invention provides a double-bag separately-controlled positive pressure oxygen breathing circulating gas storage device, which overcomes the defects of an air bag or a breathing chamber in the existing isolated positive pressure oxygen breathing device.

The technical scheme for realizing the invention is as follows: a double-bag separate control type positive pressure oxygen breathing circulating gas storage device is composed of a breathing bag, an inspiratory bag, a double-bag separate control clapboard, a tension spring arranged in the bag and a bag support frame.

Exhale the gasbag and adopt the polyurethane adhesive tape through cutting out the heat seal preparation, for the flexible gas storage soft bag of horizontal square barrel shape axial extension, the left surface is breathed the gasbag expansion plate bonding of processing preparation by the stereoplasm plastic slab and is sealed, exhale the central department of gasbag expansion plate the inside and be equipped with expansion plate extension spring location hasp, the right flank is open bung hole, the intermediate position is equipped with the sticky exhale input interface of polyurethane material preparation in the back adhesive tape right side arris, the front adhesive tape upper right internal angle department is equipped with the quick interface of ration oxygen suppliment, front adhesive tape lower right internal angle department is equipped with the sticky drainer interface of polyurethane material preparation. The exhalation bag is a circulating gas storage device for fresh oxygen which is exhaled, can be input by gas and a quantitative oxygen supply quick interface after carbon dioxide is absorbed by the cleaning tank, and is also a regulation and control device for regulating and controlling exhalation resistance and ensuring exhalation comfort.

The air suction bag is made of polyurethane adhesive tapes through cutting and heat sealing and is a horizontal square-barrel-shaped air storage soft bag capable of axially stretching, the right side surface of the air suction bag is bonded and sealed by a square air suction bag expansion plate made of hard plastic plates, an expansion plate tension spring positioning lock catch is arranged at the center of the inside of the air suction bag expansion plate, the left side surface of the air suction bag expansion plate is an open barrel opening, a polyurethane material made and bonded air suction output interface is arranged at the middle position in the left edge of the back adhesive tape, and an automatic supply quick interface is arranged at the lower left inner angle of the front adhesive tape and is communicated with an automatic supply valve arranged in the. The inhalation bag is a gas storage device which is arranged for inhalation and used for sealing and storing mixed gas supplied by the exhalation bag and fresh oxygen supplied by the automatic supply valve.

The double-bag separate control partition plate is a square plate separate control component which is manufactured by processing a hard plastic plate and is used for separating and controlling the exhalation bag and the inhalation bag, the square plate separate control component is arranged between a bucket opening on the right side surface of the exhalation bag and a bucket opening on the left side surface of the inhalation bag in a bonding and sealing mode to form a whole, a separate control one-way check valve is arranged in the center of the double-bag separate control partition plate and used for guaranteeing one-way circulation flow of gas, and partition plate tension spring positioning lock catches are arranged on the peripheries of two surfaces of a valve.

The built-in extension spring of gasbag is the straight cylindric coil spring that the axial that is made by steel spring line draws and contracts, and when not bearing the load the circle and enclose between and tightly, and built-in extension spring of gasbag establishes to two, arranges respectively in exhale gasbag and inspiratory bag internal, and extension spring both ends respectively with expansion plate extension spring location hasp and baffle extension spring location hasp locking, draw through the axial and contract and act on respectively exhale gasbag expansion plate and inspiratory bag expansion plate to ensure that be the malleation all the time in the respiratory.

The air bag support frame is a cuboid with a five-face frame structure and is made of metal laths and composed of an upper support frame, a lower support frame, a left support frame, a right support frame and a front support frame, wherein convex partition plate clamp inserting grooves are respectively arranged in the middle positions of the upper support frame, the lower support frame and the front support frame, the double-bag sub-control partition plate clamping grooves are fixed in the upper support frame, the lower support frame and the front support frame, the breathing bag and the breathing bag are horizontally positioned, concave support connection fixing holes are respectively arranged at two ends of the lower support frame, and an exhaust switch contact positioning lock catch is arranged in the center of the left support frame and locks an exhaust valve switch contact.

The support connection fixing holes at the two ends of the support lower frame are fixedly connected with the host, the exhalation input interface is communicated with the cleaning tank, the inhalation output interface is communicated with the cooling tank, the drainer interface is communicated with the drainer, the quantitative oxygen supply quick interface is connected with the quantitative oxygen supply quick plug of the pressure reducer in an inserted manner, the automatic supply quick interface is connected with the automatic supply quick plug of the pressure reducer in an inserted manner, and the double-bag separate control type positive pressure oxygen breathing circulation gas storage device is formed.

Opening a high-pressure oxygen cylinder valve of the host machine, and entering a working state: the high-pressure oxygen is decompressed by the pressure reducer, one path of the high-pressure oxygen uninterruptedly enters the breathing air bag through the quantitative oxygen supply quick connector, the other path of the high-pressure oxygen uninterruptedly enters the breathing air bag through the automatic supply valve communicated with the automatic supply quick connector, and the breathing air bag is ensured to flow in a unidirectional circulation manner all the time because the double-bag separate control partition plate is provided with the separate control one-way check valve and the breathing air valve in the system are all one-way check valves.

When the pressure of the gas in the air suction bag is reduced to the set value of the opening pressure of the automatic supply valve, a tension spring arranged in the air bag axially stretches and contracts the air suction bag expansion plate to push the automatic supply valve in the air bag to open and supply fresh oxygen to the air suction bag, and when the set value is closed, the air suction bag expansion plate stretches to separate from the automatic supply valve to enable the air suction bag expansion plate to return and close, so that the supply of oxygen according to the requirement is realized, and the air suction comfort and the effective protection time are ensured.

When the gas pressure in the exhaling bag is equal to or greater than the gas pressure in the exhaling bag, the isolating control one-way check valve is closed to prevent the gas from flowing back, when the gas pressure in the exhaling bag reaches an exhaust opening set value, the exhaling bag expansion plate axially extends to push the exhaust valve switch contact to be opened, so that the exhaled gas higher than the exhaust pressure set value is exhausted through the exhaust valve gas guide tube before entering the clean tank, so that the exhalation resistance is reduced, the exhalation comfort is ensured, when the gas pressure in the exhaling bag reaches an exhaust closing set value, the exhaling bag expansion plate axially retracts through the built-in gas bag to separate from the exhaust valve switch contact to be restored, prevent the excessive loss of the exhaled gas and improve the gas circulation utilization rate in the exhalation capsule.

The invention has the beneficial effects that: the utility model provides a two sacs are separated accuse formula malleation oxygen breathing gas storage device, take breathe out the gasbag and breathe in the gasbag and establish regulation and control and the structure design of the built-in extension spring axial of gasbag axial stretch-draw guarantee malleation of adoption, on wearing the basis that the use kept breathing cycle system internal positive pressure all the time, can promote breathing comfort performance, can prolong breathing protection time again, can effectively implement the guarantee and the healthy protection of body and mind to wearing user's physical stamina, be favorable to improving the work efficiency in fire rescue and poisonous harmful operation environment.

Drawings

FIG. 1 is a sectional structure view of a dual-bag separate control type positive pressure oxygen breathing circulation gas storage device

FIG. 2 is a top view of a dual-bag separate control type positive pressure oxygen breathing circulation gas storage device

In the figure: 1 breathing air bag, 2 breathing air bag, 3 double-bag separate control partition board, 4 air bag built-in tension springs, 5 air bag support frames, 6 breathing air bag expansion plates, 7 breathing air input interfaces, 8 quantitative oxygen supply quick interfaces, 9 drainer interfaces, 10 breathing air bag expansion plates, 11 breathing air output interfaces, 12 automatic supply quick interfaces, 13 automatic supply valves, 14 expansion plate tension spring positioning lock catches, 15 separation control one-way check valves, 16 partition board tension spring positioning lock catches, 17 support upper frames, 18 support lower frames, 19 support left frames, 20 support right frames, 21 support front frames, 22 partition board clamping slots, 23 support connection fixing holes, 24 exhaust switch contact positioning lock catches, 25 cleaning tanks, 26 cooling tanks, 27 drainers, 28 pressure reducer oxygen supply quick plugs, 29 automatic supply quick plugs, 30 exhaust valve switch contacts and 31 exhaust valve air guide pipes.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the double-bag sub-control positive pressure oxygen breathing circulation gas storage device is composed of an expiratory bag 1, an inspiratory bag 2, a double-bag sub-control partition plate 3, an air bag built-in tension spring 4 and an air bag support frame 5, and adopts a design structure that the expiratory bag 1 and the inspiratory bag 2 are respectively provided with a regulation structure and an air bag built-in tension spring 4 is adopted to axially contract to ensure positive pressure.

Exhale gasbag 1 and adopt polyurethane adhesive tape to make through cutting out the heat seal, for the flexible gas storage soft bag of horizontal square barrel shape axial extension, the left surface is sealed by the bonding of the square exhale gasbag expansion plate 6 of stereoplasm plastic slab processing preparation, 6 inside centers department of exhale gasbag expansion plate is equipped with expansion plate extension spring location hasp 14, the right flank is open bung hole, the intermediate position is equipped with the sticky exhale input interface 7 of polyurethane material preparation in the back adhesive tape right side arris, the front adhesive tape upper right internal angle department is equipped with the quick interface 8 of ration oxygen suppliment, front adhesive tape lower right internal angle department is equipped with the sticky drainer interface 9 of polyurethane material preparation. The exhalation bag 1 is a circulating gas storage device for fresh oxygen which can be input by the gas and the quantitative oxygen supply quick connector 8 after carbon dioxide is absorbed by the exhalation tank 25, and is also a regulation and control device for regulating and controlling exhalation resistance and ensuring exhalation comfort.

The air suction bag 2 is made of polyurethane adhesive plaster through cutting and heat sealing and is a horizontal square-barrel-shaped air storage soft bag capable of axially stretching, the right side surface of the air suction bag is bonded and sealed by a square air suction bag expansion plate 10 made of hard plastic plates, an expansion plate tension spring positioning lock catch 14 is arranged at the center of the inside of the air suction bag expansion plate 10, the left side surface of the air suction bag expansion plate is an open barrel opening, an air suction output interface 11 made of polyurethane materials and bonded is arranged at the middle position in the left edge of the back adhesive plaster, and an automatic supply quick interface 12 is arranged at the left lower inner angle of the front adhesive plaster and is communicated with an automatic supply valve 13. The inhalation bag 2 is a gas storage device provided for inhalation and used for storing the mixed gas supplied from the exhalation bag 1 and the fresh oxygen supplied by the automatic supply valve 13.

The double-bag separate control partition plate 3 is a square plate separate control component which is manufactured by processing a hard plastic plate and is used for separating and controlling the exhalation bag 1 and the inhalation bag 2, the square plate separate control component is placed between a bucket opening on the right side surface of the exhalation bag 1 and a bucket opening on the left side surface of the inhalation bag 2 and is bonded and sealed into a whole, a separate control one-way check valve 15 is arranged at the center of the double-bag separate control partition plate 3 to ensure the one-way circulation flow of gas, and partition plate tension spring positioning lock catches 16 are arranged on the peripheries of two surfaces of a valve port of the.

The air bag built-in tension springs 4 are straight cylindrical spiral springs which are made of steel spring wires and axially drawn and contracted, the rings are tightly clamped when the springs do not bear load, the number of the air bag built-in tension springs 4 is two, the air bag built-in tension springs are respectively arranged in the breathing air bag 1 and the breathing air bag 2, two ends of each tension spring are respectively locked with the expansion plate tension spring positioning lock catch 14 and the partition plate tension spring positioning lock catch 16, and the tension springs respectively act on the breathing air bag expansion plate 6 and the breathing air bag expansion plate 10 through axial drawing and contraction so as to ensure that positive pressure is always generated.

The air bag support frame 5 is a cuboid with a five-face frame structure and is made of metal laths and composed of a support upper frame 17, a support lower frame 18, a support left frame 19, a support right frame 20 and a support front frame 21, wherein convex partition plate clamp insertion grooves 22 are respectively arranged in the middle positions of the support upper frame 17, the support lower frame 18 and the support front frame 20, the double-bag sub-control partition plate 3 is fixed in the support upper frame 17, the support lower frame 18 and the support front frame 20 in a clamping mode, the breathing bag 1 and the breathing bag 2 are horizontally positioned, concave support connecting fixing holes 23 are respectively arranged at two ends of the support lower frame 18, and an exhaust switch contact positioning lock catch 24 is arranged in the center position of the support left frame and.

The support connecting fixing holes 23 at two ends of the support lower frame 18 are connected and fixed with a host, the expiration input interface 7 is communicated with the cleaning tank 25, the inspiration output interface 11 is communicated with the cooling tank 26, the drainer interface 9 is communicated with the drainer 27, the quantitative oxygen supply quick interface 8 is connected with the quantitative oxygen supply quick plug 28 of the pressure reducer in an inserting way, the automatic supply quick interface 12 is connected with the automatic supply quick plug 29 of the pressure reducer in an inserting way, and the double-bag separate control type positive pressure oxygen breathing circulation gas storage device is formed.

Opening a high-pressure oxygen cylinder valve of the host machine, and entering a working state: the high-pressure oxygen is decompressed by the pressure reducer, one path of the high-pressure oxygen uninterruptedly enters the breathing air bag 1 through the quantitative oxygen supply quick connector 8, the other path of the high-pressure oxygen uninterruptedly enters the breathing air bag 2 through the automatic supply valve 13 communicated with the automatic supply quick connector 12, and as the double-bag sub-control partition plate 3 is provided with the isolation control one-way check valve 15 and the exhalation valve and the breathing valve in the system are all one-way check valves, the breathing air in the system is ensured to flow in a one-way circulation.

When the air pressure in the air suction bag 2 is reduced to the set value of the opening pressure of the automatic supply valve 13, the tension spring 4 arranged in the air bag axially stretches the air suction bag expansion plate 10 to push the automatic supply valve 13 in the bag to open and supply fresh oxygen to the air suction bag 1, and when the set value is closed, the air suction bag expansion plate 10 extends to be separated from the automatic supply valve 13 to enable the air suction bag expansion plate to return to the closed position, so that the supply of oxygen according to the requirement is realized, and the air suction comfort and the effective protection time are ensured.

When exhaling, the exhaled gas passes through the exhalation valve, the exhalation hose, the carbon dioxide is absorbed by the cleaning tank 25, enters the exhalation bladder 1 and forms mixed low-pressure gas with the fresh oxygen input by the quantitative oxygen supply quick connector 8, when the gas pressure in the exhalation bladder 1 is greater than the gas pressure in the inhalation bladder 2, the isolation control one-way check valve 15 is opened to supply the gas to the inhalation bladder 2 for circulation inhalation, when the gas pressure in the inhalation bladder 2 is equal to or greater than the gas pressure in the exhalation bladder 1, the isolation control one-way check valve 15 is closed to prevent the gas from flowing back, when the gas pressure in the exhalation bladder 1 reaches an exhaust opening set value, the exhalation bladder expansion plate 6 axially extends to push the exhaust valve switch contact 30 to be opened, so that the exhaled gas with the exhaust pressure higher than the exhaust pressure set value is exhausted through the exhaust valve gas guide tube 31 before entering the cleaning tank 25, so as to reduce the exhalation resistance and ensure the exhalation comfort, and when the gas pressure in the exhalation bladder, the expiratory sac expansion plate 6 is axially drawn and contracted by the built-in tension spring 4 of the expiratory sac to be separated from the exhaust valve switch contact 30, so that the expiratory sac expansion plate returns to the original position and is closed, the excessive loss of expired gas is prevented, and the gas circulation utilization rate in the expiratory sac 1 is improved.

The invention is assembled in an isolated positive pressure oxygen respirator, can improve the breathing comfort performance and prolong the breathing protection time on the basis of ensuring the positive pressure in the system, can effectively implement the guarantee of physical ability and physical and mental health of a user wearing the respirator, and is beneficial to improving the working efficiency in fire rescue and toxic and harmful operation environments.

Claims

1. The utility model provides a two bag branch accuse formula malleation oxygen breathing circulation gas storage device, is the gas storage bag of adorning in isolated formula malleation oxygen respirator, characterized by: the breathing and breathing dual-bag separate regulation and control and the axial shrinkage of a built-in tension spring are adopted to ensure the positive pressure, and the breathing bag positive pressure protection device is composed of a breathing bag (1), a breathing bag (2), a dual-bag separate control partition plate (3), a built-in tension spring (4) of the air bag and an air bag support frame (5); the breathing bag (1) and the breathing bag (2) are horizontal square-barrel-shaped gas storage soft bags capable of axially stretching, the left side surface and the right side surface of the breathing bag (2) are provided with a breathing bag expansion plate (6) and a breathing bag expansion plate (10) which are bonded and sealed, the double-bag separate control partition plate (3) is arranged between the mouths of the double bags and bonded and sealed into a whole, the center of the double-bag separate control partition plate (3) is provided with a separate control one-way check valve (15), gas entering the breathing bag (1) can be unidirectionally delivered to the breathing bag (2), and the gas entering the breathing bag (2) cannot reversely flow into the breathing bag (1); the tension springs (4) arranged in the air bag are respectively arranged in the breathing air bag (1) and the air suction bag (2) and locked, and act on a breathing air bag expansion plate (6) and an air suction bag expansion plate (10) through axial tension and contraction to ensure that the system is always positively pressurized; a double-bag separate control partition plate (3) which is integrally bonded with an exhalation bag (1) and an inhalation bag (2) is arranged in an air bag support frame (5) to be positioned and fixed, the air bag support frame (5) is fixed with a host, and each interface of the double bags is correspondingly connected with relevant parts of the host, so that the double-bag separate control type positive pressure oxygen breathing circulation air storage device which can improve the breathing comfort performance and prolong the breathing protection time is formed.

2. The dual-bag separate control type positive pressure oxygen breathing circulation gas storage device as claimed in claim 1, wherein the expiratory bag (1) is a horizontal square-barrel shaped axially extensible gas storage soft bag made of polyurethane adhesive tape by cutting and heat sealing, a telescopic plate tension spring positioning lock catch (14) is arranged at the center inside a telescopic plate (6) of the expiratory bag, an expiratory gas input interface (7) is arranged at the middle inside the right edge of the back adhesive tape, a quantitative oxygen supply quick interface (8) is arranged at the upper right inner corner of the front adhesive tape, and a drainer interface (9) is arranged at the lower right inner corner of the front adhesive tape.

3. The dual-bag separate control type positive pressure oxygen breathing circulation gas storage device as claimed in claim 1, wherein the inhalation bag (2) is a horizontal square-barrel shaped axially extensible gas storage soft bag made of polyurethane adhesive tape by cutting and heat sealing, a tension spring positioning lock catch (14) of the expansion plate is arranged at the center of the inside of the expansion plate (10) of the inhalation bag, an inhalation output interface (11) is arranged at the middle of the left edge of the back adhesive tape, and an automatic supply quick interface (12) is arranged at the left lower inner corner of the front adhesive tape and communicated with an automatic supply valve (13) arranged in the inhalation bag (2).

4. The dual-bag separate control type positive pressure oxygen breathing circulation gas storage device as claimed in claim 1, wherein the dual-bag separate control partition (3) is a square partition made of hard plastic plate, and partition tension spring positioning latches (16) are arranged on the peripheries of two sides of the valve port of the separate control one-way check valve (15).

5. The dual-bag separately controlled positive pressure oxygen breathing circulating gas storage device as claimed in claim 1, wherein the tension spring (4) built in the gas bag is a straight cylindrical helical spring made of steel spring wire and axially stretched and contracted to ensure positive pressure, and the rings are tightly combined when not bearing load.

6. The dual-bag separate-control positive-pressure oxygen breathing circulating gas storage device as claimed in claim 1, wherein the bag support frame (5) is a cuboid of a five-face frame made of metal lath, and is composed of a support upper frame (17), a support lower frame (18), a support left frame (19), a support right frame (20) and a support front frame (21), wherein the support upper frame (17), the support lower frame (18) and the support front frame (21) are respectively provided with a convex partition clamping slot (22) at the middle positions inside, the support lower frame (18) and the support front frame (21) are respectively provided with a concave support connecting fixing hole (23) at both ends, and the support left frame (19) is provided with an exhaust switch contact positioning lock catch (24) at the center position.