Chemical oxygen fire-fighting self-rescue respirator
By using a combination of pistons, racks, gears and alarms in the chemical oxygen fire self-rescue respirator, the gas supply instability and alarm delay caused by the stop of the reaction of the oxygen reaction tank is solved, and timely alarm and equipment safety improvement is achieved.
Patent Information
- Application Number
- CN202420855935.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-24
AI Technical Summary
After the existing chemical oxygen fire self-rescue respirator is used for a certain period of time, the internal reaction of the oxygen reaction tank will stop, resulting in unstable oxygen supply and the inability to alert in time, affecting the response operations of the users.
A chemical oxygen fire self-rescue respirator is designed, using a combination of piston, rack, gear, adapter and alarm. The piston moves downward when the gas pressure is reduced, ensuring a timely alarm before the end of oxygen supply and passing through Springs and gaskets prevent leakage.
It realizes timely alarms before the end of oxygen supply, ensures that users can respond in a timely manner, and prevents leakage, improving the reliability and safety of the equipment.
Smart Images
Figure CN222172888U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire-fighting self-rescue breathing apparatus, in particular to a chemical oxygen fire-fighting self-rescue breathing apparatus. Background Art
[0002] A chemical oxygen respirator is a device that can provide breathing oxygen. It uses chemical reactions to generate oxygen and is used in emergency situations where oxygen is not normally available. The core of the chemical oxygen fire-fighting self-rescuer is the oxygen reaction tank. After the reaction switch is triggered during use, the oxygen reaction tank can ensure a continuous supply of oxygen during use.
[0003] Among them, the Chinese patent announcement number is CN203001730U, a chemical oxygen fire-fighting self-rescue breathing apparatus oxygen reactor, the center of the tank body of the oxygen reactor is vertically connected with an air intake pipe, the bottom end of the air intake pipe is connected to the air storage bag, and the top end of the air intake pipe is connected to a one-way valve and connected to the breathing mask.
[0004] In the prior art, during the use of chemical oxygen fire-fighting self-rescue respirators, after a certain period of use, the internal reaction of the oxygen reaction tank stops, resulting in the inability to provide a stable and continuous oxygen supply, and the user cannot be promptly and quickly alerted before the oxygen supply is almost finished, resulting in the user being unable to respond in time. Therefore, the utility model designs a chemical oxygen fire-fighting self-rescue respirator. Utility Model Content
[0005] The purpose of the utility model is to solve the problem in the prior art that after the oxygen reaction tank has been used for a certain period of time, the internal reaction stops, resulting in the inability to provide a stable and continuous oxygen supply, and the user cannot be promptly and quickly alarmed before the oxygen supply is about to end, resulting in the user being unable to respond in time. A chemical oxygen fire-fighting self-rescue respirator is proposed.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A chemical oxygen fire-fighting self-rescue breathing apparatus comprises an oxygen reaction tank, a shoulder strap is fixedly connected to the side wall of the oxygen reaction tank, an oxygen supply tube is fixedly connected to the top of the oxygen reaction tank, a breathing mask is fixedly connected to the end of the oxygen supply tube away from the oxygen reaction tank, a connecting tube is fixedly connected to the top inner wall of the oxygen reaction tank, a shell is fixedly connected to the top inner wall of the connecting tube, a rotating rod is rotatably connected to the top inner wall of the shell, a piston is slidably provided on the inner wall of the connecting tube, a rack is fixedly connected to the top of the piston, a gear is fixedly sleeved on the rod wall of the rotating rod located inside the shell, the rack and the gear are meshed with each other, a switching wire is fixedly connected to the inner wall of the piston, a power supply and an alarm are fixedly connected to the top inner wall of the oxygen reaction tank, and the wiring terminals of the power supply and the alarm extend to the inner wall of the connecting tube respectively.
[0008] Preferably, the rod wall of the rotating rod extends to the outside of the shell and the fixed sleeve is provided with a pointer, and scale lines are provided on the side wall of the shell.
[0009] Preferably, a guide block is fixedly connected to the side wall of the rack, a guide groove is provided on the inner wall of the shell, and the guide block is slidably arranged on the inner wall of the guide groove.
[0010] Preferably, a counterweight is fixedly connected to the top end of the piston.
[0011] Preferably, a fixing ring is fixedly connected to the inner wall of the bottom end of the connecting tube, a spring is fixedly connected to the top end of the fixing ring, a connecting ring is fixedly connected to the top end of the spring, a side wall of the connecting ring is slidably arranged on the inner wall of the connecting tube, a baffle is fixedly connected to the top end of the connecting ring, and a side wall of the baffle is slidably arranged on the inner wall of the connecting tube.
[0012] Preferably, a sealing gasket is fixedly connected to the side wall of the baffle, and the sealing gasket is pressed against the inner wall of the connecting tube.
[0013] Compared with the prior art, the utility model provides a chemical oxygen fire-fighting self-rescue respirator, which has the following beneficial effects:
[0014] 1. The chemical oxygen fire-fighting self-rescue breathing apparatus, when the gas pressure decreases, the piston continues to move downward under the action of the counterweight block until the two ends of the adapter wire are respectively in contact with the wiring terminals of the power supply and the alarm, so that the power supply processes the alarm through the adapter wire.
[0015] 2. The chemical oxygen fire-fighting self-rescue respirator can push the connecting ring upward through the spring, push the baffle and the sealing gasket to cover the wiring terminals of the power supply and the alarm to prevent leakage. At the same time, the baffle can be pushed away when the piston moves downward subsequently, which will not affect the wiring processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of the chemical oxygen fire-fighting self-rescue breathing apparatus proposed by the utility model;
[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the local A part;
[0018] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of part B in the middle.
[0019] In the figure: 1 oxygen reaction tank, 2 shoulder strap, 3 oxygen supply tube, 4 breathing mask, 5 connecting tube, 6 shell, 7 rotating rod, 8 pointer, 9 scale line, 10 piston, 11 rack, 12 gear, 13 adapter wire, 14 power supply, 15 alarm, 16 guide block, 17 counterweight block, 18 fixing ring, 19 spring, 20 connecting ring, 21 baffle, 22 sealing gasket. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0021] Embodiment 1
[0022] Reference Figure 1-3 The chemical oxygen fire-fighting self-rescue breathing apparatus comprises an oxygen reaction tank 1, a shoulder strap 2 is fixedly connected to the side wall of the oxygen reaction tank 1, an oxygen supply pipe 3 is fixedly connected to the top of the oxygen reaction tank 1, and a breathing mask 4 is fixedly connected to the end of the oxygen supply pipe 3 away from the oxygen reaction tank 1, a connecting tube 5 is fixedly connected to the top inner wall of the oxygen reaction tank 1, a shell 6 is fixedly connected to the top inner wall of the connecting tube 5, a rotating rod 7 is rotatably connected to the top inner wall of the shell 6, a piston 10 is slidably provided on the inner wall of the connecting tube 5, a rack 11 is fixedly connected to the top of the piston 10, a gear 12 is fixedly sleeved on the rod wall of the rotating rod 7 located inside the shell 6, the rack 11 and the gear 12 are meshed with each other, a switching line 13 is fixedly connected to the inner wall of the piston 10, a power supply 14 and an alarm 15 are fixedly connected to the top inner wall of the oxygen reaction tank 1, and the wiring terminals of the power supply 14 and the alarm 15 extend to the inner wall of the connecting tube 5 respectively.
[0023] The rod wall of the rotating rod 7 extends to the outside of the shell 6 and is fixedly sleeved with a pointer 8, a scale line 9 is provided on the side wall of the shell 6, a guide block 16 is fixedly connected to the side wall of the rack 11, a guide groove is opened on the inner wall of the shell 6, the guide block 16 is slidably set on the inner wall of the guide groove, and a counterweight block 17 is fixedly connected to the top of the piston 10.
[0024] When in use, the oxygen reaction tank 1 can continuously supply oxygen to the breathing mask 4 through the oxygen supply tube 3, the air pressure can push the piston 10 to move, and can drive the rack 11 to move, the rack 11 moves the gear 12 and the pointer 8 to rotate through the rotating rod 7, and the air pressure inside the oxygen reaction tank 1 can be observed in real time from the outside. When the gas pressure decreases, the piston 10 continues to move downward under the action of the counterweight 17 until the two ends of the adapter line 13 are respectively contacted with the wiring terminals of the power supply 14 and the alarm 15, so that the power supply 14 can alarm the alarm 15 through the adapter line 13, and the guide block 16 slides along the inner wall of the guide groove, which can improve the stability of the movement of the rack 12.
[0025] Embodiment 2
[0026] Reference Figure 1-3 A fixing ring 18 is fixedly connected to the inner wall of the bottom end of the connecting tube 5, a spring 19 is fixedly connected to the top of the fixing ring 18, a connecting ring 20 is fixedly connected to the top of the spring 19, a side wall of the connecting ring 20 is slidably set on the inner wall of the connecting tube 5, a baffle 21 is fixedly connected to the top of the connecting ring 20, a side wall of the baffle 21 is slidably set on the inner wall of the connecting tube 5, a sealing gasket 22 is fixedly connected to the side wall of the baffle 21, and the sealing gasket 22 is pressed against the inner wall of the connecting tube 5.
[0027] The spring 19 can push the connecting ring 20 upward, and can push the baffle 21 and the sealing gasket 22 to cover the wiring terminals of the power supply 14 and the alarm 15 to prevent leakage. At the same time, when the piston 10 moves downward, the baffle 21 can be pushed away without affecting the wiring process.
[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A chemical oxygen fire-fighting self-rescue breathing apparatus, comprising an oxygen reaction tank (1), characterized in that: A shoulder strap (2) is fixedly connected to the side wall of the oxygen reaction tank (1); an oxygen supply tube (3) is fixedly connected to the top of the oxygen reaction tank (1); an end of the oxygen supply tube (3) away from the oxygen reaction tank (1) is fixedly connected to a breathing mask (4); a connecting tube (5) is fixedly connected to the inner wall of the top of the oxygen reaction tank (1); a shell (6) is fixedly connected to the top of the connecting tube (5); a rotating rod (7) is rotatably connected to the inner wall of the top of the shell (6); a piston (8) is slidably provided on the inner wall of the connecting tube (5); 10), the top end of the piston (10) is fixedly connected to a rack (11), the rotating rod (7) is located on the rod wall inside the housing (6) and is fixedly sleeved with a gear (12), the rack (11) and the gear (12) are arranged in meshing relationship with each other, the inner wall of the piston (10) is fixedly connected to a switching wire (13), the inner wall of the top end of the oxygen reaction tank (1) is fixedly connected to a power source (14) and an alarm (15), and the wiring terminals of the power source (14) and the alarm (15) respectively extend to the inner wall of the connecting tube (5).
2. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 1, characterized in that: The rod wall of the rotating rod (7) extends to the outside of the housing (6) and a pointer (8) is fixedly sleeved thereon, and scale lines (9) are provided on the side wall of the housing (6).
3. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 1, characterized in that: A guide block (16) is fixedly connected to the side wall of the rack (11), a guide groove is provided on the inner wall of the housing (6), and the guide block (16) is slidably arranged on the inner wall of the guide groove.
4. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 1, characterized in that: A counterweight (17) is fixedly connected to the top end of the piston (10).
5. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 1, characterized in that: A fixing ring (18) is fixedly connected to the inner wall of the bottom end of the connecting tube (5); a spring (19) is fixedly connected to the top end of the fixing ring (18); a connecting ring (20) is fixedly connected to the top end of the spring (19); a side wall of the connecting ring (20) is slidably arranged on the inner wall of the connecting tube (5); a baffle (21) is fixedly connected to the top end of the connecting ring (20); and a side wall of the baffle (21) is slidably arranged on the inner wall of the connecting tube (5).
6. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 5, characterized in that: A sealing gasket (22) is fixedly connected to the side wall of the baffle (21), and the sealing gasket (22) is pressed against the inner wall of the connecting tube (5).