Mining isolated compressed oxygen self-rescuer

Abstract

A mining isolated compressed oxygen self-rescuer comprises a self-rescuer body, an oxygen bottle and a breathing assembly. According to the isolated compressed oxygen self-rescuer for the mine, the fixed sealing plate and the rotary sealing plate are arranged on the cleaning tank shell, the fixed sealing plate and the rotary sealing plate are both provided with air vents, the air guide pipe is matched with the rotary sealing plate, and the rotary sealing plate is driven to rotate by rotating the air guide pipe; a rotary sealing plate ventilation opening in the rotary sealing plate and a fixed sealing plate ventilation opening in the fixed sealing plate are controlled to be staggered and overlapped, so that the flow of the cleaning tank is limited by controlling the shell and the air bag to be isolated and communicated, and the cleaning tank is controlled to be opened and closed in good time; and the carbon dioxide absorbent is prevented from overflowing from the cleaning tank to block the quantitative hole and the pressure reducing valve.

Description

Technical Field

[0001] The present invention relates to the field of mine emergency rescue equipment, and in particular to a mine-isolated compressed oxygen self-rescuer. Background Art

[0002] An isolated compressed oxygen self-rescuer is a reusable self-rescue and escape equipment with high-pressure compressed oxygen as the oxygen source. It is mainly used in coal mines or working environments with normal atmospheric pressure when toxic and harmful gas outbursts and hypoxia asphyxiation disasters occur. It has the characteristics of light weight, small volume, comfortable breathing, and convenient carrying. When the existing compressed oxygen self-rescuer inhales, oxygen enters the human body from the airbag through the breathing valve and mouthpiece. When exhaling, the gas passes through the breathing valve and the exhalation tube and enters the cleaning canister. The carbon dioxide exhaled by the human body is absorbed by the absorbent installed in the cleaning canister, and the remaining oxygen enters the airbag. In this way, the breathing cycle of a person is completed repeatedly, and the breathing of the human body is completely isolated from the outside atmosphere. However, the outlet of the cleaning canister of the existing self-rescuer is open and relatively close to the pressure reducing valve. During use, the carbon dioxide absorbent installed inside the cleaning canister will seep out from the outlet, affecting the flow rate of the metering orifice and causing the metering orifice to be blocked. After the existing self-rescuer is used for 2-3 years, the carbon dioxide absorbent in the cleaning canister will seep out through the guide tube and adhere to the pressure reducing valve, and will enter the inside of the pressure reducing valve through the always-open manual supply flow orifice, affecting the tight closing of the manual flow orifice. As a result, when the oxygen cylinder valve is opened, oxygen will flow out through the not-tightly-closed manual supply metering orifice and be discharged by the airbag exhaust valve, resulting in waste of oxygen and even insufficient oxygen supply provided by the oxygen cylinder, and the protection time of the entire self-rescuer is insufficient. Therefore, a new type of mine-isolated compressed oxygen self-rescuer is needed to solve the above problems. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a mine-isolated compressed oxygen self-rescuer. A fixed sealing plate and a rotating sealing plate are provided on the outer shell of the cleaning canister. Both the fixed sealing plate and the rotating sealing plate are provided with air vents. The guide tube cooperates with the rotating sealing plate. By rotating the guide tube, the rotating sealing plate is driven to rotate, and the rotating sealing plate air vent on the rotating sealing plate is controlled to be misaligned and coincident with the fixed sealing plate air vent on the fixed sealing plate, so as to limit the flow rate of the cleaning canister by controlling the isolation and conduction between the outer shell and the airbag, achieving the purpose of timely controlling the opening and closing of the cleaning canister and avoiding the carbon dioxide absorbent from overflowing from the cleaning canister and blocking the metering orifice and the pressure reducing valve.

[0004] The technical solution adopted by the present invention to solve its technical problems is a mine - used isolated compressed oxygen self - rescuer, which includes a self - rescuer body, an oxygen cylinder, and a breathing component. Among them, a pressure reducer, a pressure gauge, and a switch are arranged on the oxygen cylinder. The self - rescuer body includes an oxygen cylinder placement cavity and a purification tank. The oxygen cylinder is placed in the oxygen cylinder placement cavity. The breathing component, the purification tank, and the oxygen cylinder are connected to form a mine - used isolated compressed oxygen self - rescuer; The purification tank includes a tank body, and a carbon dioxide absorbent is contained in the tank body. The tank body includes a shell, a hose clamp, a trachea, a butterfly spring, a rotating sealing plate, a fixed sealing plate, and an airbag. The shell has external fine - thread screw, evenly distributed trachea positioning holes. The trachea has a sealing plate pin, a trachea positioning pin, and internal fine - thread screw. The external fine - thread screw on the shell is gradually tightened in cooperation with the internal fine - thread screw on the trachea. The rotating sealing plate has a rotating sealing plate pin hole and a rotating sealing plate air vent. The fixed sealing plate has a fixed sealing plate air vent. The butterfly spring and the rotating sealing plate are connected to the trachea. Under the action of the butterfly spring, the rotating sealing plate and the fixed sealing plate are pressed tightly. The sealing plate pin on the trachea is positioned with the rotating sealing plate pin hole on the rotating sealing plate. The fixed sealing plate is fixedly pasted to the shell; The breathing component includes an airbag, a breathing tube, a breathing valve, and a mouthpiece. One end of the airbag is connected to the pressure reducer, and the other end is connected to the shell through a hose clamp. One end of the breathing tube in the airbag is connected to the trachea through a hose clamp, and the other end is connected to the breathing valve and the mouthpiece; During use, for the rotating trachea, the sealing plate pin on the trachea cooperates with the rotating sealing plate pin hole of the rotating sealing plate to drive the rotation of the rotating sealing plate. When the rotating sealing plate air vent on the rotating sealing plate is misaligned with the fixed sealing plate air vent on the fixed sealing plate, the shell and the airbag are in an isolated state, and the trachea positioning pin on the trachea cooperates with the trachea positioning hole on the shell for positioning. Continuing to rotate the trachea, the sealing plate on the trachea cooperates with the rotating sealing plate pin hole of the rotating sealing plate to drive the rotation of the rotating sealing plate. When the rotating sealing plate air vent on the rotating sealing plate coincides with the fixed sealing plate air vent on the fixed sealing plate, the shell and the airbag group are in a conducting state, and the trachea positioning pin on the trachea cooperates with the trachea positioning hole on the shell for positioning.

[0005] The beneficial effects of the present invention are as follows: The mine-isolated compressed oxygen self-rescuer is provided with a fixed sealing plate and a rotating sealing plate on the shell of the purification tank. Both the fixed sealing plate and the rotating sealing plate are provided with air vents. The air duct cooperates with the rotating sealing plate. By rotating the air duct, the rotating sealing plate is driven to rotate, controlling the misalignment and coincidence of the air vent of the rotating sealing plate on the rotating sealing plate and the air vent of the fixed sealing plate on the fixed sealing plate, so as to limit the flow rate of the purification tank by controlling the isolation and conduction between the shell and the airbag, achieving the beneficial effects of timely controlling the opening and closing of the purification tank and preventing the carbon dioxide absorbent from overflowing from the purification tank and blocking the metering hole and the pressure reducing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is a structural view of the present invention; Figure 2 for the present invention Figure 1 is an enlarged view of Part I; Figure 3 is a front structural view of the purification tank of the present invention; Figure 4 for the present invention Figure 3 is a top view; Figure 5 is a front structural view of the air duct of the present invention; Figure 6 for the present invention Figure 5 is a top view; Figure 7 is a front structural view of the rotating sealing plate of the present invention; Figure 8 for the present invention Figure 7 is a sectional view taken along line A-A; Figure 9 is a front structural view of the fixed sealing plate of the present invention; Figure 10 for the present invention Figure 9 is a sectional view taken along line B-B; In the figure: 1. Shell; 1-1. External fine-threaded screw; 1-2. Air duct positioning hole; 2. Carbon dioxide absorbent; 3. Hose clamp; 4. Air duct; 4-1. Sealing plate pin; 4-2. Air duct positioning pin; 4-3. Internal fine-threaded screw; 5. Disc spring; 6. Rotating sealing plate; 7. Fixed sealing plate; 8. Airbag; 9. Breathing tube; 10. Breathing valve; 11. Mouthpiece; 12. Pressure reducing valve; 13. Pressure gauge; 14. Switch; 15. Oxygen cylinder. DETAILED DESCRIPTION OF THE INVENTION

[0007] The specific implementation manner of the present invention is as follows, with reference to Figure 1, A mine - used isolated compressed oxygen self - rescuer, comprising a self - rescuer body, an oxygen cylinder and a breathing component. Among them, a pressure reducer 12, a pressure gauge 13 and a switch 14 are arranged on the oxygen cylinder 15. The self - rescuer body includes an oxygen - cylinder placement cavity and a cleaning tank. The oxygen cylinder 15 is placed in the oxygen - cylinder placement cavity. The breathing component, the cleaning tank and the oxygen cylinder 15 are connected to form a mine - used isolated compressed oxygen self - rescuer; Refer to Figures 1 - 10 , The cleaning tank includes a tank body, and a carbon dioxide absorbent 2 is installed in the tank body. The tank body includes a housing 1, a hose clamp 3, an air duct 4, a butterfly spring 5, a rotating sealing plate 6, a fixed sealing plate 7 and an airbag 8. The housing 1 has external fine - thread screw 1 - 1 and evenly distributed air - duct positioning holes 1 - 2. The air duct 4 has a sealing - plate pin 4 - 1, an air - duct positioning pin 4 - 2 and internal fine - thread screw 4 - 3. The external fine - thread screw 1 - 1 on the housing 1 is gradually tightened in cooperation with the internal fine - thread screw 4 - 3 on the air duct 4. The rotating sealing plate 6 has a rotating - sealing - plate pin hole 6 - 1 and a rotating - sealing - plate air vent 6 - 2. The fixed sealing plate 7 has a fixed - sealing - plate air vent 7 - 1. The butterfly spring 5 and the rotating sealing plate 6 are connected to the air duct 4. Under the action of the butterfly spring 5, the rotating sealing plate 6 and the fixed sealing plate 7 are pressed tightly. The sealing - plate pin 4 - 1 on the air duct 4 and the rotating - sealing - plate pin hole 6 - 1 on the rotating sealing plate 6 are mutually positioned. The fixed sealing plate 7 is fixedly adhered to the housing 1; Refer to Figure 1 , The breathing component includes an airbag 8, a breathing tube 9, a breathing valve 10 and a mouthpiece 11. One end of the airbag 8 is connected to the pressure reducer 12, and the other end is connected to the housing 1 through a hose clamp 3. One end of the breathing tube 9 in the airbag 8 is connected to the air duct 4 through a hose clamp 3, and the other end is connected to the breathing valve 10 and the mouthpiece 11; Refer to Figures 1 - 10 , During use, rotate the air duct 4. The sealing - plate pin 4 - 1 on the air duct 4 cooperates with the rotating - sealing - plate pin hole 6 - 1 of the rotating sealing plate 6 to drive the rotation of the rotating sealing plate 6. When the rotating - sealing - plate air vent 6 - 2 on the rotating sealing plate 6 is misaligned with the fixed - sealing - plate air vent 7 - 1 on the fixed sealing plate 7, the housing 1 and the airbag 8 are in an isolated state, and the air - duct positioning pin 4 - 2 on the air duct 4 cooperates with the air - duct positioning hole 1 - 2 on the housing 1 for positioning. Continue to rotate the air duct 4. The sealing - plate pin 4 - 1 on the air duct 4 cooperates with the rotating - sealing - plate pin hole 6 - 1 of the rotating sealing plate 6 to drive the rotation of the rotating sealing plate 6. When the rotating - sealing - plate air vent 6 - 2 on the rotating sealing plate 6 coincides with the fixed - sealing - plate air vent 7 - 1 on the fixed sealing plate 7, the housing 1 and the airbag group 8 are in a conducting state, and the air - duct positioning pin 4 - 2 on the air duct 4 cooperates with the air - duct positioning hole 1 - 2 on the housing 1 for positioning.

[0008] The experimental results of the quantitative oxygen supply data detection of a mine - used isolated compressed oxygen self - rescuer: Old standard AQ1054 - 2008: The quantitative oxygen supply of the pressure reducing valve should not be less than 1.2 L / min. After the rolling test, the quantitative oxygen supply will drop to 0.5 - 1.0 L / min. New standard GB24502 - 2023: When the normal value of the pressure reducing valve is at an oxygen cylinder pressure of 20 Mpa - 3 Mpa, for a breathing volume of 35 L / min, the quantitative oxygen supply should not be less than 2.1 L / min (equivalent to the breathing volume of a person during exercise), and for a breathing volume of 10 L / min, the quantitative oxygen supply should not be less than 0.5 L / min (equivalent to the breathing volume of a person sitting still). After the self - rescuer undergoes a rolling test (a square wooden box with an inner side of 300 mm made of 18 - mm - thick wood rotates continuously around its diagonal axis at a speed of 60 ± 2 r / min for 10 min) or after being used for more than two years, when the oxygen cylinder pressure is 20 Mpa - 3 Mpa, for a breathing volume of 35 L / min, the quantitative oxygen supply will drop to 1.0 - 1.8 L / min for a breathing volume of 35 L / min. Comparison table of quantitative oxygen supply data detection:

[0009] Conclusion: The experimental results show that this patent can effectively prevent the powder from entering the airbag and affecting the quantitative oxygen supply of the pressure reducing valve, thus ensuring the quantitative oxygen supply of the original designed compressed oxygen self - rescuer. The quantitative oxygen supply is the guarantee for supplying the necessary oxygen when personnel wear the self - rescuer in a toxic gas environment.

Claims

1. An isolated compressed oxygen self-rescuer for mine use, comprising a self-rescuer body, an oxygen cylinder and a breathing component, characterized in that: A pressure reducer, a pressure gauge and a switch are provided on the oxygen cylinder. The self-rescuer body includes an oxygen cylinder placement cavity and a purification tank. The oxygen cylinder is placed in the oxygen cylinder placement cavity. The breathing assembly, the purification tank and the oxygen cylinder are connected to form a mine-isolated compressed oxygen self-rescuer.

2. The special feature of the mine - used isolated compressed oxygen self - rescuer according to claim 1 is that: The purification tank includes a tank body which is filled with a carbon dioxide absorbent. The tank body includes an outer shell, a hose clamp, an air duct, a butterfly spring, a rotary sealing plate, a fixed sealing plate and an airbag. The outer shell has external fine-threaded screw threads and evenly distributed air duct positioning holes. The air duct has a sealing plate detent pin, an air duct positioning pin and internal fine-threaded screw threads. The external fine-threaded screw threads on the outer shell are gradually tightened in cooperation with the internal fine-threaded screw threads on the air duct. The rotary sealing plate has a rotary sealing plate detent pin hole and a rotary sealing plate air vent. The fixed sealing plate has a fixed sealing plate air vent. The butterfly spring and the rotary sealing plate are connected to the air duct, and the rotary sealing plate and the fixed sealing plate are pressed tightly under the action of the butterfly spring. The sealing plate detent pin on the air duct is positioned with the rotary sealing plate detent pin hole on the rotary sealing plate. The fixed sealing plate is fixedly adhered to the outer shell.

3. A mine-isolated compressed oxygen self-rescuer according to claim 2, characterized in that: The breathing assembly includes an airbag, a breathing tube, a breathing valve and a mouthpiece. One end of the airbag is connected to the pressure reducer, and the other end is connected to the outer shell through a hose clamp. One end of the breathing tube in the airbag is connected to the air duct through a hose clamp, and the other end is connected to the breathing valve and the mouthpiece.

4. A mine-isolated compressed oxygen self-rescuer according to any one of claims 1 to 3, characterized in that: During use, the rotary air duct, the sealing plate detent pin on the air duct cooperates with the rotary sealing plate detent pin hole of the rotary sealing plate to drive the rotary sealing plate to rotate; when the rotary sealing plate air vent on the rotary sealing plate is misaligned with the fixed sealing plate air vent on the fixed sealing plate, the outer shell and the airbag are in an isolated state, and the air duct positioning pin on the air duct is positioned in cooperation with the air duct positioning hole on the outer shell; continue to rotate the air duct, the sealing plate on the air duct cooperates with the rotary sealing plate detent pin hole of the rotary sealing plate to drive the rotary sealing plate to rotate. When the rotary sealing plate air vent on the rotary sealing plate coincides with the fixed sealing plate air vent on the fixed sealing plate, the outer shell and the airbag group are in a conducting state, and the air duct positioning pin on the air duct is positioned in cooperation with the air duct positioning hole on the outer shell.

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