CN108671437B

CN108671437B - Novel oxygen respirator

Info

Publication number: CN108671437B
Application number: CN201810517419.2A
Authority: CN
Inventors: 柯高峰; 王琳
Original assignee: Zhejiang Hengtai Safety Equipment Co ltd
Current assignee: Zhejiang Hengtai Safety Equipment Co ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2020-06-09
Anticipated expiration: 2038-05-25
Also published as: CN108671437A

Abstract

The invention discloses a novel oxygen respirator, which relates to a breathing device, and comprises a shell, an oxygen bottle, an air bag, a cleaning tank, a cooling tank and a breathing tee joint, wherein a pressure reducer is communicated between the oxygen bottle and the air bag, an air suction hose is communicated between the breathing tee joint and the cooling tank, an air expiration hose is communicated between the breathing tee joint and the cleaning tank, and the air bag is also communicated with the cleaning tank and the cooling tank; the one-way valve comprises a first valve, and an action switch controlled by the first valve is arranged at the first valve; the shell is internally provided with an installation cover, one side of the air bag is fixed in the installation cover, and the other side of the air bag is fixed with a pressing plate; the shell is internally provided with a driving mechanism, and the action switch controls the driving mechanism to drive the pressing plate to act. The air bag of the novel oxygen respirator can be reduced or expanded along with the self-adaption of inspiration and expiration, so that the inspiration and expiration resistance of a user is reduced; and the amount of waste gas leaving the circulation during expiration can be adjusted to meet different requirements of increasing oxygen concentration or saving absorbent and the like.

Description

Novel oxygen respirator

Technical Field

The invention relates to a breathing device, in particular to a novel oxygen respirator.

Background

An oxygen respirator is a breathing protective device commonly used by fire fighters or mine rescue personnel in the process of emergency rescue and disaster relief, and is mainly used in places with toxic and harmful gases and oxygen deficiency. The oxygen respirator can spontaneously generate oxygen and process expired carbon dioxide, so that long-time respiratory protection is provided for emergency and disaster relief personnel.

The present utility model discloses a chinese utility model patent that the publication number of granting is CN201308733Y discloses an gasbag formula malleation oxygen respirator, including casing, support, gasbag, be located the oxygen cylinder of casing lower part, the oxygen feed system that pressure reducer (containing ration hole, manual supply valve and relief valve) through bottle valve and oxygen cylinder are connected, alarm, automatic supply valve are constituteed to and set up the clean jar, cooling tank, with the exhaling hose of clean jar intercommunication, with the breathing hose of cooling tank intercommunication on casing upper portion and gasbag intercommunication. The gasbag passes through the gasbag backup pad and two malleation springs are connected on the support, and discharge valve adorns on the support top, and discharge valve's carbon dioxide interface of admitting air is connected with the bypass pipe, is equipped with the automatic supply valve of oxygen in the gasbag.

However, when a user exhales, the exhaled air needs to overcome the spring resistance of the multi-way check valve and the filtering resistance in the cleaning tank, and the elasticity of the positive pressure spring is overcome to circulate, so that the user exhales more difficultly.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a novel oxygen respirator, which is labor-saving for a user to exhale.

The technical purpose of the invention is realized by the following technical scheme: a novel oxygen respirator comprises a shell, an oxygen bottle, an air bag, a cleaning tank, a cooling tank and a breathing tee joint, wherein a pressure reducer is communicated between the oxygen bottle and the air bag, an air suction hose is communicated between the breathing tee joint and the cooling tank, an air expiration hose is communicated between the breathing tee joint and the cleaning tank, and the air bag is also communicated with the cleaning tank and the cooling tank; the one-way valves control the one-way circulation of gas along the air bag, the cooling tank, the breathing tee joint, the cleaning tank and the air bag, and comprise first valves, and action switches controlled by the first valves are arranged at the first valves; the shell is internally provided with an installation cover, one side of the air bag is fixed in the installation cover, and the other side of the air bag is fixed with a pressing plate; the air bag type respirator is characterized in that a driving mechanism and a storage battery for supplying power to the driving mechanism are arranged in the shell, the action switch controls the driving mechanism to drive the pressing plate to act, the pressing plate expands the air bag when exhaling, and the pressing plate extrudes the air bag when inhaling.

Through above-mentioned technical scheme, during the use, the circulation is gone into after the oxygen in the oxygen cylinder is decompressed through the pressure reducer, and gaseous along gasbag, cooling tank, breathing tee bend, clean jar, gasbag one-way circulation under the effect of check valve, wherein clean jar is used for absorbing exhaled carbon dioxide, and the cooling tank is used for cooling gas, and the tee bend of breathing supplies the user to wear. When the air bag is sucked, the first valve is in a closed state due to one-way conduction, and the action switch drives the pressing plate to extrude the air bag through the circuit control driving mechanism, so that the suction resistance is small; when exhaling, the atmospheric pressure in the breathing tee bend risees, and first valve switches to the open mode to the state of switching action switch, actuating mechanism drives the clamp plate and expands the gasbag, has showing and has reduced expiration resistance.

Preferably, actuating mechanism is including rotating lead screw, the drive lead screw pivoted motor that sets up in the installation cover, the lead screw includes orthodontic screw thread section and anti-tooth screw thread section, equal threaded connection has the slider on orthodontic screw thread section and the anti-tooth screw thread section, it has the connecting rod to articulate respectively on the slider, the end that the connecting rod deviates from the slider articulates in the clamp plate.

According to the technical scheme, the action switch controls the motor to rotate forwards or backwards, when the motor rotates towards one direction, the screw rod drives the two sliding blocks to be away from each other through the threaded connection effect of the orthodontic thread section and the contra-orthodontic thread section, and the pressing plate moves towards the direction of extruding the air bag under the hinging effect of the connecting rod; when the motor rotates reversely, the motor drives the two sliding blocks to be close to each other, and the pressing plate moves towards the direction of the expansion air bag under the hinging action of the connecting rod.

Preferably, the number of the driving mechanisms is two, and the two driving mechanisms are respectively located on two sides of the width direction of the pressing plate.

Through the technical scheme, the two driving mechanisms can act on the pressing plate from two sides of the pressing plate simultaneously, the stress of the pressing plate is stable, and the action is stable.

Preferably, the first valve is located in the expiratory hose at a position adjacent to the breathing triplet.

Through above-mentioned technical scheme, when exhaling, breathe the atmospheric pressure in the tee bend and rise, because first valve is close to and breathes the tee bend, then first valve can fast switch over to the on-state and press action switch, improves actuating mechanism's response speed.

Preferably, a protective cover is arranged on the mounting cover, the air bag is positioned between the mounting cover and the protective cover, a second valve is arranged on the protective cover, a bypass pipe is communicated between the expiration hose and the second valve, and the second valve comprises a second valve body and a second valve core extending out of the second valve body towards the direction of the air bag; when the air bag expands, the pressure plate presses the second valve core so as to conduct the second valve.

Through the technical scheme, at the end of expiration, along with the expansion of the air bag, the air bag presses the second valve core through the pressing plate, the second valve is conducted, and the exhaled air can sequentially pass through the exhalation hose and the bypass pipe to reach the second valve to be discharged, so that the air bag leaves the circulation. Because the exhausted gas does not pass through the cleaning tank, the consumption of the absorbent in the cleaning tank can be reduced, and meanwhile, the space is vacated for fresh oxygen to enter circulation, so that the gas inhaled by a user contains enough oxygen concentration.

Preferably, the safety cover is including the draw runner that is located both sides, offer on the installation cover and supply the gliding spout of draw runner embedding, the spout slope sets up, and its incline direction is: when the protective cover slides relative to the mounting cover, the distance between the protective cover and the mounting cover is changed in a self-adaptive manner.

Through above-mentioned technical scheme, when the safety cover slides for the installation cover, the interval self-adaptation of safety cover roof and installation cover diapire changes to change the perpendicular distance between second valve and the installation cover diapire, then can change the opportunity that the second valve was opened in the gasbag inflation, thereby exhaust waste gas volume when adjusting the expiration, in order to satisfy different demands such as increase oxygen concentration or save absorbent.

Preferably, the protective cover is rotatably provided with an adjusting rod, the axial direction of the adjusting rod is the same as the length direction of the sliding groove, the adjusting rod is in threaded connection with the shell, and the end of the adjusting rod penetrates out of the shell.

Through the technical scheme, a user can rotate the adjusting rod to be positioned at the end part outside the shell, and the adjusting rod drives the protective cover to slide through the threaded connection effect with the shell, so that the operation is convenient; and the protective cover is not easy to spontaneously slide with the mounting cover.

Preferably, a base is installed in the shell, an air groove and a sealing plate for sealing the opening of the air groove are formed in the base, and the air groove is used for communicating the expiration hose, the cleaning tank and the bypass pipe.

Through the technical scheme, compared with a common air pipe communication mode, on one hand, the air is ventilated through the vent grooves without reserving space for the air pipe, and the space in the shell is saved to a certain extent; on the other hand, the vent groove can be designed into a flat shape with larger width, and the space layout in the shell is greatly facilitated on the premise of keeping larger air circulation capacity.

Preferably, a bypass port for connecting a bypass pipe is formed in the base, the bypass port is communicated with the vent groove, and the bypass port is located at the junction of the airbag, the cleaning tank and the cooling tank.

Through above-mentioned technical scheme, because the position that gasbag, clean jar, cooling tank three were bordered generally leaves the space, set up the bypass port in here, can reduce the occupation of bypass pipe to the casing inner space, and clean jar and cooling tank can hug closely the setting, further save space.

In summary, compared with the prior art, the beneficial effects of the invention are as follows:

1. the air bag can be reduced or expanded along with the self-adaption of inspiration and expiration, so that the inspiration and expiration resistance of a user is reduced;

2. the distance between the second valve and the air bag is adjustable, and the amount of waste gas leaving the circulation during expiration can be adjusted, so that different requirements of increasing oxygen concentration or saving an absorbent and the like are met;

3. the space in the shell is saved by arranging the vent groove and the bypass port.

Drawings

FIG. 1 is an exploded view of the novel oxygen respirator of the present embodiment, highlighting primarily the overall structure of the respirator;

FIG. 2 is an exploded view of the base and closure plate, with the primary projection of the vent slot and bypass port;

FIG. 3 is a cross-sectional view of the first valve, highlighting primarily the structure of the first valve and the motion switch;

FIG. 4 is a partial exploded view of the present respirator, primarily highlighting the structure of the mounting and protective covers;

FIG. 5 is a schematic view of the drive mechanism;

fig. 6 is a sectional view of the second valve, mainly highlighting the internal structure of the second valve.

Reference numerals: 1. a housing; 2. a base; 11. an oxygen cylinder; 12. an air bag; 13. a cleaning tank; 14. a cooling tank; 15. a breathing tee joint; 111. a pressure reducer; 151. a suction hose; 152. an expiratory hose; 21. a vent channel; 23. a bypass port; 22. closing the plate; 3. a first valve; 31. a first valve body; 32. a first spring; 33. a first valve core; 4. an action switch; 5. mounting a cover; 6. a protective cover; 61. a slide bar; 51. a chute; 62. adjusting a rod; 7. a second valve; 71. a second valve body; 72. a second spring; 73. a second valve core; 711. an air inlet; 712. an air outlet; 8. a bypass pipe; 90. pressing a plate; 9. a drive mechanism; 92. a screw rod; 93. a motor; 921. an orthodontic threaded segment; 922. a thread section of a reverse thread; 94. a slider; 95. a connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

As shown in fig. 1, a novel oxygen respirator comprises a shell 1 and a base 2 arranged in the shell 1, wherein an oxygen bottle 11, an air bag 12, a cleaning tank 13 and a cooling tank 14 are arranged on the base 2, and a breathing tee 15 is arranged outside the shell 1; a pressure reducer 111 is communicated between the oxygen cylinder 11 and the air bag 12, an air suction hose 151 is communicated between the breathing tee 15 and the cooling tank 14, an air expiration hose 152 is communicated between the breathing tee 15 and the cleaning tank 13, and the air bag 12 is also communicated with the cleaning tank 13 and the cooling tank 14. A plurality of one-way valves are arranged in an air path of the respirator, and the one-way valves control the one-way circulation of air along the air bag 12, the cooling tank 14, the breathing tee 15, the cleaning tank 13 and the air bag 12.

As shown in FIG. 2, a ventilation slot 21 is formed on one side of the base 2, which is far away from the cleaning tank 13, and the ventilation slot 21 communicates the expiration hose 152 with the cleaning tank 13; the vent groove 21 extends to the boundary position of the air bag 12, the cleaning tank 13 and the cooling tank 14, a bypass port 23 communicated with the vent groove 21 is arranged on the base 2 at the boundary position of the three, and the bypass port 23 penetrates through two end faces of the base 2. A sealing plate 22 is further arranged on one side of the base 2, which is far away from the cleaning tank 13, the shape of the sealing plate 22 is matched with the air channel 21, and the sealing plate 22 is fixed on the base 2 through screws so as to seal the opening part of the air channel 21. Compared with a common air pipe communication mode, on one hand, the air is ventilated through the air channel 21 without reserving space for the air pipe, and the space in the shell 1 is saved to a certain extent; on the other hand, the ventilation slot 21 can be designed to be flat with a large width, which greatly facilitates the spatial layout in the housing 1 on the premise of keeping a large air circulation capacity.

As shown in FIG. 3, the one-way valve comprises a first valve 3, the first valve 3 being located in the exhalation hose 152 near the end of the breathing tee 15. The first valve 3 comprises a first valve body 31, a first spring 32 and a first valve core 33, wherein the first spring 32 presses the first valve core 33 against the first valve body 31 to realize one-way conduction. A press type action switch 4 is arranged in the valve body I31, and the action switch 4 is opposite to the valve core I33; when the first valve core 33 acts against the elastic force of the first spring 32, the first valve core 33 just presses the action switch 4.

As shown in fig. 4, a mounting cover 5 and a protection cover 6 for placing an airbag 12 are arranged in the housing 1, wherein the mounting cover 5 is fixed on the base 2, the protection cover 6 is slidably arranged on the mounting cover 5, the mounting cover 5 and the protection cover 6 are transversely arranged in the housing 1 along the length direction, and the protection cover 6 and the mounting cover 5 surround to form a space for placing the airbag 12. The protective cover 6 comprises sliding strips 61 positioned at two sides of the protective cover in the width direction, and a sliding groove 51 for the sliding strips 61 to be embedded and slide is formed in the mounting cover 5; the chute 51 is arranged obliquely, and the oblique direction thereof is: the distance between the slide groove 51 and the base 2 gradually decreases in the direction from the cooling tank 14 to the purge tank 13. When the protective cover 6 slides relative to the mounting cover 5, the distance between the top wall of the protective cover 6 and the bottom wall of the mounting cover 5 is adaptively changed.

As shown in fig. 4 and 5, an adjusting lever 62 is rotatably provided on a side wall of the protective cover 6 in the width direction, the adjusting lever 62 is connected to the protective cover 6 by engaging a latch with a catch, and the adjusting lever 62 can rotate around its own axis but cannot move relative to the protective cover 6. The axial direction of the adjusting rod 62 is the same as the length direction of the sliding groove 51, the adjusting rod 62 is in threaded connection with the shell 1, and the end of the adjusting rod is penetrated out of the shell 1. When the adjusting rod 62 is rotated to the end outside the housing 1, the adjusting rod 62 is axially displaced by the screw connection with the housing 1, and the protective cover 6 is further driven to slide relative to the mounting cover 5.

As shown in fig. 4 and 6, the second valve 7 is fixed on the protection cover 6, the second valve 7 includes a second valve body 71, a second spring 72 and a second valve core 73, the second valve body 71 is provided with an air inlet 711 and an air outlet 712, the second spring 72 presses the second valve core 73 against the air outlet 712 and seals the air outlet 712, and the second valve core 73 extends out of the second valve body 71 towards the air bag 12. A bypass pipe 8 is communicated between the intake port 711 and the bypass port 23.

As shown in fig. 5, one side of the airbag 12 is fixed to the bottom wall of the mounting cover 5 by glue, and the other side of the airbag 12 is fixed to a pressing plate 90 by glue, the pressing plate 90 being located between the airbag 12 and the protection cover 6. A driving mechanism 9 for driving the platen 90 to operate and a battery for supplying power to the driving mechanism 9 are provided in the housing 1. The number of the driving mechanisms 9 is two, and the two driving mechanisms 9 are respectively located at both sides of the width direction of the pressing plate 90. The driving mechanism 9 comprises a screw rod 92 rotatably arranged in the mounting cover 5 and a motor 93 driving the screw rod 92 to rotate, the screw rod 92 comprises an orthodontic thread section 921 and an anti-orthodontic thread section 922, the orthodontic thread section 921 and the anti-orthodontic thread section 922 are connected with a sliding block 94 in a threaded manner, the sliding block 94 is hinged with a connecting rod 95, the end part of the connecting rod 95 departing from the sliding block 94 is hinged on the side wall of the pressing plate 90, and the screw rod 92, the pressing plate 90 and the two connecting rods 95 are surrounded to form an isosceles trapezoid.

The motor 93 is a reversible servomotor 93, and the motor 93 is electrically connected to the operation switch 4 by a lead wire and to the battery by a lead wire. When the action switch 4 is in the pop-up state, the motor 93 rotates to make the two sliding blocks 94 away from each other, and the pressing plate 90 moves towards the direction of extruding the air bag 12 under the hinging action of the connecting rod 95; when the operation switch 4 is pressed, the motor 93 rotates reversely to move the two sliders 94 toward each other, and the pressing plate 90 moves in a direction to expand the airbag 12 by the hinge action of the link 95. The motor 93 is provided with a limit in both rotational directions, and automatically stops when rotating a certain angle.

The novel oxygen respirator has the working conditions as follows: the user is at breathing tee bend 15 facial makeup, when breathing in, oxygen in the oxygen cylinder 11 gets into gasbag 12 after the decompression of pressure reducer 111, and first valve 3 is in the off-state because one-way conduction, then action switch 4 is in pop-up state, and actuating mechanism 9 orders about clamp plate 90 extrusion gasbag 12, and the gas in the gasbag 12 is after cooling tank 14 cools off, and the hose 151 gets into and breathes in the tee bend 15 and supply the breathing and use through breathing in, because clamp plate 90 extrudes gasbag 12, then the resistance of breathing in is less.

When the patient exhales, the air pressure in the breathing tee joint 15 rises, and because the first valve 3 is close to the breathing tee joint 15, the first valve 3 can be rapidly switched to the open state, the action switch 4 is pressed down, the driving mechanism 9 drives the pressing plate 90 to expand the air bag 12, the exhaled air is processed by the cleaning tank 13 and then returns to the air bag 12, and the exhalation resistance is obviously reduced.

At the end of expiration, as the air bag 12 expands, the air bag 12 presses the second valve core 73 through the pressure plate 90, the second valve 7 is conducted, and the expired air can pass through the expiration hose 152, the vent groove 21 and the bypass pipe 8 in sequence, reach the second valve 7 and be discharged, so that the circulation is separated. Because the exhausted gas does not pass through the cleaning tank 13, the consumption of the absorbent in the cleaning tank 13 can be reduced, and meanwhile, the space is vacated for fresh oxygen to enter circulation, so that the gas inhaled by a user contains enough oxygen concentration.

When the opening and closing of the second valve 7 is inconsistent with the requirements of the user, the user can rotate the adjusting rod 62 to slide the protective cover 6 relative to the mounting cover 5, so as to change the vertical distance between the second valve 7 and the bottom wall of the mounting cover 5, and then the time for the airbag 12 to expand and open the second valve 7 can be changed, so that the amount of the exhaust gas discharged during expiration can be adjusted, and different requirements such as increasing the oxygen concentration or saving the absorbent can be met.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims

1. A novel oxygen respirator comprises a shell (1), an oxygen bottle (11), an air bag (12), a cleaning tank (13), a cooling tank (14) and a breathing tee joint (15), wherein a pressure reducer (111) is communicated between the oxygen bottle (11) and the air bag (12), an air suction hose (151) is communicated between the breathing tee joint (15) and the cooling tank (14), an air expiration hose (152) is communicated between the breathing tee joint (15) and the cleaning tank (13), and the air bag (12) is also communicated with the cleaning tank (13) and the cooling tank (14); still include a plurality of check valves, check valve control is gaseous along gasbag (12), cooling tank (14), breathing tee bend (15), clean jar (13), gasbag (12) one-way circulation, characterized by: the check valve comprises a first valve (3), and an action switch (4) controlled by the first valve (3) is arranged at the first valve (3); an installation cover (5) is arranged in the shell (1), one side of the air bag (12) is fixed in the installation cover (5), and a pressing plate (90) is fixed on the other side of the air bag (12); a driving mechanism (9) and a storage battery for supplying power to the driving mechanism (9) are arranged in the shell (1), the action switch (4) controls the driving mechanism (9) to drive the pressing plate (90) to act, the pressing plate (90) expands the air bag (12) during expiration, and the pressing plate (90) extrudes the air bag (12) during inspiration;

the driving mechanism (9) comprises a screw rod (92) rotatably arranged in the mounting cover (5) and a motor (93) driving the screw rod (92) to rotate, the screw rod (92) comprises an orthodontic thread section (921) and a contra-dental thread section (922), the orthodontic thread section (921) and the contra-dental thread section (922) are both in threaded connection with a sliding block (94), the sliding block (94) is respectively hinged with a connecting rod (95), and the end part of the connecting rod (95) departing from the sliding block (94) is hinged to the pressing plate (90); the number of the driving mechanisms (9) is two, and the two driving mechanisms (9) are respectively positioned on two sides of the width direction of the pressing plate (90); the screw rod (92), the pressing plate (90) and the two connecting rods (95) are surrounded to form an isosceles trapezoid;

a protective cover (6) is arranged on the mounting cover (5), the air bag (12) is positioned between the mounting cover (5) and the protective cover (6), a second valve (7) is arranged on the protective cover (6), a bypass pipe (8) is communicated between the expiration hose (152) and the second valve (7), and the second valve (7) comprises a second valve body (71) and a second valve core (73) extending out of the second valve body (71) towards the direction of the air bag (12); when the air bag (12) expands, the pressure plate (90) presses the second valve core (73) so as to conduct the second valve (7);

safety cover (6) are including draw runner (61) that are located both sides, offer on installation cover (5) and supply draw runner (61) embedding gliding spout (51), spout (51) slope sets up, and its incline direction is: when the protective cover (6) slides relative to the mounting cover (5), the distance between the protective cover (6) and the mounting cover (5) is changed in a self-adaptive manner.

2. The novel oxygen respirator of claim 1, wherein: the first valve (3) is positioned in the expiration hose (152) near the breathing tee (15).

3. The novel oxygen respirator of claim 1, wherein: the protective cover (6) is provided with an adjusting rod (62) in a rotating mode, the axial direction of the adjusting rod (62) is the same as the length direction of the sliding groove (51), the adjusting rod (62) is connected with the shell (1) in a threaded mode, and the end portion of the adjusting rod penetrates out of the shell (1).

4. The novel oxygen respirator of claim 1, wherein: install base (2) in casing (1), seted up air channel (21) on base (2), be provided with air channel (21) oral area confined shrouding (22), air channel (21) will exhale hose (152), clean jar (13), bypass pipe (8) intercommunication.

5. The novel oxygen respirator of claim 4, wherein: the base (2) is provided with a bypass port (23) for connecting the bypass pipe (8), the bypass port (23) is communicated with the vent groove (21), and the bypass port (23) is positioned at the junction of the airbag (12), the cleaning tank (13) and the cooling tank (14).