CN-224207244-U - Circulation air supply type breathing device

CN224207244UCN 224207244 UCN224207244 UCN 224207244UCN-224207244-U

Abstract

The utility model provides a circulating air supply type breathing device which comprises a main body of a closed structure, wherein the main body comprises an air suction chamber, a carbon dioxide adsorber and an air discharge chamber which are sequentially communicated, an air suction chamber which can axially stretch along the air suction chamber is arranged in the air suction chamber, an air discharge chamber which can axially stretch along the air discharge chamber is arranged in the air discharge chamber, a breathing mask which is respectively communicated with the air suction chamber and the air discharge chamber through an air suction pipeline and a breathing pipeline, an air supply port which is communicated with the air suction chamber, and one-way valves which are arranged in the air suction pipeline, in the air discharge pipeline, at the bottom of the air suction chamber, on the air discharge chamber, in the air supply port and between the carbon dioxide adsorber and the air suction chamber. The utility model has simple structure and low cost, can recycle the expired air, and can mention the comfort and safety of operators.

Inventors

LV YANG
Song Xunhuan
CHEN ZHIQIANG
JIN YANBIN
Tong Yushun
WANG XIAO
ZOU ZHENYU
JING XIANGLI
HU SHENGMIN
SONG QINGQI
ZHANG SHUAI
WANG YANPING
XU JINGAN

Assignees

中铁十一局集团有限公司
中铁十一局集团城市轨道工程有限公司
中铁十一局武汉重型装备有限公司

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (8)

1. A cyclic gas supply type breathing apparatus, comprising: The device comprises a main body of a closed structure, wherein the main body comprises an air suction chamber, a carbon dioxide adsorber and an air exhaust chamber which are sequentially communicated, the air suction chamber is internally provided with an air suction air bag which can axially stretch along the air suction chamber, and the air exhaust chamber is internally provided with an air exhaust air bag which can axially stretch along the air exhaust chamber; The breathing mask is communicated with the inspiration air bag and the expiration air bag through an inspiration pipeline and an expiration pipeline respectively; an air supply port, the air supply port communicating with the air-breathing bladder; The breathing mask comprises a breathing mask body, a breathing pipe, a breathing air bag, a carbon dioxide adsorber, an air supply port, a breathing air bag, an air supply port, a carbon dioxide adsorber, a third check valve, a fourth check valve, a seventh check valve, an eighth check valve and a pressure threshold value, wherein the breathing air bag is internally provided with a first check valve which can enable air to flow to the breathing mask, the breathing air bag is internally provided with a second check valve which can enable air to flow to the breathing air bag, the breathing air bag is internally provided with a third check valve which can enable air to flow to the breathing air bag, the breathing air bag is internally provided with a fourth check valve which can enable air to flow to the breathing air bag, the breathing air bag is internally provided with a fifth check valve which can enable air to flow to the outside of the chamber, the breathing air supply port is internally provided with a sixth check valve which is used for enabling air to flow to the breathing air bag, a seventh check valve which is used for enabling air to flow from the carbon dioxide adsorber to flow into the breathing air chamber is arranged between the carbon dioxide adsorber and the breathing air chamber, and an eighth check valve which is arranged between the carbon dioxide adsorber and the breathing air chamber is provided with a eighth check valve which is used for enabling air from the breathing air chamber.
2. The cyclic gas supply type breathing apparatus according to claim 1, wherein the body of the airtight structure comprises a frame and a cover, one ends of the inhalation chamber and the exhalation chamber are provided with openings, the inhalation chamber and the exhalation chamber are sealed by the cover, and the cover is provided with through holes for the inhalation pipe, the exhalation pipe and the gas supply port to pass through respectively.
3. The cyclic gas supply type breathing apparatus according to claim 1 or 2, wherein the pressure threshold value of the eighth one-way valve is 0.2-0.5bar smaller than the pressure threshold value of the fifth one-way valve.
4. The cyclic gas supply type breathing apparatus according to claim 1 or 2, wherein the first one-way valve is located at an end of the inhalation conduit near the respiratory mask, and the second one-way valve is located at an end of the exhalation conduit near the exhalation bladder.
5. The cyclic gas supply type breathing apparatus according to claim 1 or 2, wherein the carbon dioxide adsorber is detachably provided in the main body.
6. A cyclic gas supply type breathing apparatus according to claim 1 or 2, further comprising a ninth one-way valve provided at the end of the inhalation conduit adjacent the inhalation bladder for enabling gas flow to the respiratory mask.
7. The cyclic gas supply type breathing apparatus of claim 2 wherein the cover is sealed to the frame by bolting, and sealing gaskets are provided on the bolts.
8. The cyclic gas supply type breathing apparatus according to claim 1 or 2, wherein the tops of the inspiration and expiration gas bags are connected to the tops of the inspiration and expiration gas chambers, respectively, and extend in the bottom direction of the chamber along the axial direction of the chamber, and the connection means may be a fixed connection or a detachable connection.

Description

Circulation air supply type breathing device Technical Field The utility model belongs to the field of respirators, and particularly relates to a circulating air supply type breathing device applied to the field of shield. Background When working in a high-pressure environment, the respirator is necessary equipment for survival and working by operators, the stability of the performance of the respirator is related to the physical health and the working time of the operators, and the existing respirator is basically used for directly exhausting oxygen (or mixed gas) into the air after sucking the oxygen (or mixed gas), so that the utilization efficiency of gas (especially oxygen) is greatly reduced. The Chinese patent with the publication number of CN108969857B discloses a full-automatic oxygen inhalation and exhaust device, which comprises an inhalation regulator, an exhalation regulator, an inhalation corrugated hose, an exhalation corrugated hose, a three-way pipe, an oxygen inhalation mask, an oxygen supply valve assembly, an oxygen exhaust valve assembly, an inhalation corrugated pipe interface and an exhalation corrugated pipe interface, wherein the inhalation regulator and the exhalation regulator are both in a cylinder shape which is transversely arranged, the oxygen supply valve assembly is arranged on the left upper side of the interior of the inhalation regulator, the oxygen exhaust valve assembly is arranged on the left side of the exterior of the inhalation regulator, the oxygen exhaust corrugated pipe interface is arranged on the right upper side of the interior of the exhalation regulator, one end of the inhalation corrugated hose is connected with the inhalation corrugated pipe interface, the other end of the inhalation corrugated hose is connected with the left side port of the three-way pipe, one end of the exhalation corrugated hose is connected with the right side port of the three-way pipe, the lower port of the three-way pipe is connected with the oxygen inhalation mask, the upper part of the oxygen supply valve assembly is connected with the gas supply pipe, and the upper part of the oxygen exhaust valve assembly is connected with the exhaust pipe. The oxygen inhalation by the mask can be automatically supplied by a person in the inhalation process according to the inhalation rhythm of the person, namely, the valve seat of the oxygen supply valve assembly can be automatically opened along with the inhalation rhythm of the person when the person inhales, the oxygen supply amount can be automatically adjusted according to the inhalation amount of the person, the valve seat can be automatically closed to stop supplying oxygen when the inhalation is stopped, the oxygen discharge valve can be automatically opened along with the exhalation rhythm of the person when the person exhales, namely, the oxygen discharge valve can be automatically opened along with the exhalation rhythm of the person when the person exhales, the oxygen discharge amount can be automatically adjusted according to the exhalation amount of the person, and the oxygen discharge valve can be automatically closed to stop discharging oxygen when the exhalation is stopped. On one hand, the inhalation regulator is adopted to inhale oxygen for patients, which saves three times of the oxygen consumption compared with the prior art, and on the other hand, the exhalation regulator prevents the gas in the room from being extracted out of the room, reduces the operation load of the vacuum negative pressure system equipment, and reduces the influence on the environmental temperature and humidity of the room. However, this approach does not recycle the exhaled gases, greatly reducing the efficiency of oxygen utilization. The Chinese patent application with the publication number of CN109078246A discloses an oxygen recycling and absorbing device, which adopts the scheme that the oxygen recycling and absorbing device comprises a transparent hood, a hood fixing ring, a latex neck sleeve, an expiration hose, a box body, an expander, a gas circulation pipe, a blow-down knob, a gas driver, a dehumidifier, a carbon dioxide adsorber, a gas jet device, an auxiliary oxygen device, an oxygen pressure reducer, an oxygen flow regulating valve and an air return hose; the transparent hood is cylindrical, the lower part of the transparent hood is connected with the latex neck sleeve through a hood fixing ring, the bottom of the latex neck sleeve is open, one end of an expiration hose is arranged on the left side of the transparent hood, the other end of the expiration hose is connected to the left side of the upper part of a cuboid box body and is connected with an expander on the left side of the inner part of the box body, one end of a gas circulation pipe is connected to the bottom of the expander, the other end of the gas circulation pipe is sequentially connected with a gas driver and a dehumidifier which are positioned at the bottom of the box