CN207722253U - A kind of oxygen breathing apparatus is saved oneself device for supplying - Google Patents

Abstract

The utility model discloses a self-rescue supply device for an oxygen respirator, which belongs to the technical field of the oxygen respirator. Oxygen respirator self-rescue supply device, including spare oxygen cylinder, pressure reducing valve device, cooling device, gas delivery conduit, safety connection device. The conduits are respectively connected to the cooling device and the safety connection device. The safety connection device includes a valve body and a suction pipe. The suction pipe is connected to the valve body. The feeder interface on the pipe, the safety connection device also includes a spring, a valve core, and a conduit joint installed in the valve body. One end of the spring is set at the connection between the suction pipe and the valve body, the other end of the spring is connected to the valve core, and one end of the conduit joint is connected to the valve body. A ventilation hole is arranged between the valve core and the conduit connector and the valve core, and the other end of the conduit connector is used for connecting the gas delivery conduit. The respirator self-rescue supply device of the utility model can be used as necessary special equipment for mine rescue teams, and can also be used in departments such as fire protection, petroleum, chemical industry, metallurgy, ships and underground engineering.

Description

Self-rescue supply device for oxygen respirator

technical field

The utility model specifically relates to a self-rescue supply device for an oxygen respirator, which belongs to the technical field of the oxygen respirator.

Background technique

The Mine Rescue Team is a professional and technical organization dealing with mine fires, gas, coal dust, water, roof and other disasters, and is always at the forefront of emergency rescue and disaster relief. It is the last line of defense in the process of safety accidents in production mines.

With the widespread popularization and extensive use of positive pressure oxygen respirators, the safety factor of rescue workers in disaster-stricken areas has been significantly improved. However, the oxygen respirator will inevitably fail due to its own reasons or human error. After investigation and research, it is found that there are currently two main methods for dealing with mechanical failures of oxygen respirators. One is to replace the oxygen cylinder. When the positive pressure oxygen respirator is in use due to excessive exercise of the user, improper wearing of the mask, loose connecting parts and other reasons, the oxygen cylinder can be replaced after troubleshooting; the second is to replace the oxygen respirator. When the low-pressure system or high-pressure system of the positive pressure oxygen respirator has a large air leak and the fault cannot be eliminated, the method of replacing the oxygen respirator or manually replenishing the gas supply is adopted to enable the ambulance personnel to quickly evacuate the disaster area.

All there is following deficiency in above these two kinds of methods: in the process of changing oxygen cylinder or changing oxygen respirator, its procedure is loaded down with trivial details time-consuming, and the user can't complete independently, has shortened the time of emergency rescue and disaster relief, also caused damage to the self safety of ambulance team. potential threat.

In order to solve the above problems, a self-rescue replenisher device has been added to some existing oxygen respirator equipment, such as the paper "Research and Development and Application of Self-rescue Resupply Device for Positive Pressure Oxygen Respirator", Shandong Coal Technology, No. 6, 2011, published a A kind of self-rescue supply device, but this self-rescue supply device is limited by structure, does not play good self-rescue effect. When oxygen supply is needed, on the one hand, the oxygen supply hose is directly inserted into the breathing mask, which will inevitably lead to air leakage, so that the limited oxygen will be exhausted faster. For mine rescuers, it is difficult to meet self-rescue needs. On the other hand, oxygen is provided by a decompression and quantitative device. Due to the small capacity of the spare oxygen cylinder, it is difficult to ensure a sufficient supply of oxygen. If the capacity of the spare oxygen cylinder is increased, it is equivalent to carrying two oxygen respirators at the same time, losing emergency self-rescue the meaning of

Utility model content

Therefore, the purpose of this utility model is to provide a self-rescue resupply device for an oxygen respirator, which can improve the work efficiency of ambulance personnel for rescue and disaster relief when used in a toxic and harmful gas environment; when a failure occurs, the user can independently complete the installation and use, It is not only easy to operate, but also can ensure sufficient oxygen supply.

Specifically, the oxygen respirator self-rescue supply device of the present utility model includes a spare oxygen cylinder, a pressure reducing valve device, a cooling device, an air delivery conduit, and a safety connection device. The conduits are respectively connected to the cooling device and the safety connection device. The wall of the cooling device adopts a double-layer design, and a vacuum is maintained between the layers. The blue ice core is installed inside the device for cooling; the safety connection device includes a valve body and a suction The suction pipe is connected to the valve body, the suction pipe is provided with a suction pipe interface, and the suction pipe interface is connected to the feeder interface on the suction hose of the oxygen respirator; the safety connection device also includes a valve body arranged in the valve body. Spring, valve core, conduit joint, one end of the spring is arranged at the connection between the suction pipe and the valve body, the other end of the spring is connected to the valve core, one end of the conduit joint is connected to the valve core, and there is a vent hole between the conduit joint and the valve core, The other end of the conduit connector is used to connect the gas delivery conduit.

Further, the valve body includes two symmetrical valve body units, and the two valve body units are clamped through locking slots.

Further, the air delivery conduit is connected to the conduit connector through a quick connector.

The valve body is provided with a snap lock slot corresponding to the snap lock of the quick connector, and a sealing rubber ring is provided between the valve body and the conduit joint.

Further, the spare oxygen cylinder is provided with a pressure reducing valve device.

Further, the valve body is made of aluminum alloy.

Further, the spare oxygen cylinder is also provided with an oxygen cylinder switch.

Further, the wall of the cooling device adopts a double-layer design, and a vacuum is maintained between the layers, and there is a blue ice core inside the device.

The beneficial effect of the utility model is that: compared with the traditional oxygen respirator, the oxygen respirator self-rescue supply device of the utility model has a novel structure and a scientific and reasonable design. When the positive pressure oxygen respirator is in use, the oxygen consumption is too large due to excessive exercise, the mask is not worn tightly, and the connecting parts are loose, or when the low pressure system or high pressure system pipeline of the positive pressure oxygen respirator has a large In the event of an air leak, the spare oxygen cylinder can be used to quickly supply oxygen in a timely and effective manner, preventing technicians from operating errors resulting in insufficient oxygen supply, resulting in failure to complete the rescue mission and posing a potential threat to the lives of rescuers. The new structure design is simple, will not increase the weight of the respirator, and the production cost is low. It can be improved on the basis of the existing oxygen respirator, and there will be no air leakage during use, ensuring sufficient oxygen supply and winning for self-rescue. precious time. The respirator self-rescue supply device of the utility model can be used as the necessary special equipment for the mine rescue team, and can also be used in departments such as fire protection, petroleum, chemical industry, metallurgy, shipbuilding and underground engineering. , used when engaged in fire fighting or accident handling.

Description of drawings

Fig. 1 is the structural representation of a kind of oxygen respirator self-rescue supply device of the present utility model;

Fig. 2 is a schematic diagram of the internal structure of the safety connection device in Fig. 1;

Fig. 3 is a schematic diagram of the principle of installation and use of the oxygen respirator self-rescue supply device on the oxygen respirator.

Figure 4 is a schematic diagram of the structure of the cooling device.

The reference signs are as follows: 1. Spare oxygen cylinder, 2. Gas conduit, 3. Safety connection device; 4. Cooling device

11. Pressure gauge, 12. Flow adjustment switch, 13. Oxygen cylinder switch;

201, suction pipe, 202, suction pipe interface, 203, spring, 204, locking slot, 205, spool, 206, air hole, 207, conduit connector, 208, sealing rubber ring, 209, buckle lock,

210. Buckle lock slot nipple;

301. Suction valve, 302. Supplement interface, 303. Suction hose, 304. Cooling tank, 305. Cooler, 306. Regulator diaphragm, 307. Breathing chamber, 308. Exhaust valve, 309. Positive pressure spring,

310, manual supply valve, 311, alarm, 312, high pressure flow limiting valve, 313, chest pressure gauge,

314, gas cylinder valve, 315, oxygen cylinder pressure gauge, 316, high-pressure oxygen cylinder, 317, pressure reducing valve,

318, safety valve, 319, automatic supply valve, 320, quantitative oxygen supply valve, 321, cleaning tank, 322, exhalation hose, 323, exhalation valve, 324, mask.

401, oxygen conduit, 402 outer wall, 403, inner wall, 404, blue ice core

Detailed ways

The specific embodiment of the utility model is described below in conjunction with accompanying drawing:

In this embodiment, a self-rescue supply device for an oxygen respirator is designed to solve the problems of inconvenient portability and insufficient oxygen supply in the prior art.

The overall structure of the supply device is shown in Figure 1, and the interconnected backup oxygen cylinder 1, gas conduit 2, safety connection device 3, and cooling device 4 are the main components of the device.

The decompression gauge 11, the flow regulating switch 12, and the oxygen cylinder switch 13 installed on the spare oxygen cylinder are used as preferred parts.

The structure of the safety connection device 3 is shown in Figure 2, the valve body, the valve core 205, and the spring 203 form a one-way valve; the valve core 205 is a semi-empty circular platform body, and when the reverse is closed, the valve core 205 and the valve seat hole are surface-sealed; The valve body is in the shape of a circular platform and is hollow. The spare oxygen cylinder 1 is connected to the safety connection device 3. The safety connection device 3 is provided with an inhalation pipe 201, and the inhalation pipe 201 is provided with an inhalation pipe interface 202; There is a snap lock 209, a snap lock slot nipple 210, and a one-way valve to form a quick connector device. The valve body includes two symmetrical valve body monomers, and the two valve body monomers are clamped through the locking slot 204. The conduit connector 207 is the connecting part between the gas delivery conduit 2 and the safety connection device 3. The conduit connector 207 and the valve core 205 A vent hole 206 is provided between them, and a sealing rubber ring 208 is provided between the valve body and the conduit connector 2 .

The functions of the main components are:

Inhalation pipe 201: the oxygen in the oxygen respirator enters the breathing mask through the inhalation pipe after being processed for human breathing.

Inhalation pipe interface 202: the inhalation pipe interface is connected with the breathing mask interface

Spring 203: The spring is connected with the valve core, exerts force on the valve core, and the valve core moves relative to each other after being acted by the elastic force, so that the valve core and the valve body are in contact with each other to form a sealing effect.

Locking slot 204: the valve body is composed of two components, and the locking slot fixes the relative positions of the two components.

Spool 205: the spool is connected with the spring, and after being acted by the force of the spring, it forms a surface contact with the valve body to play a sealing role.

Vent holes 206: the four vent holes at the conduit joint are channels for the oxygen in the conduit to enter the valve body.

Conduit connector 207: the conduit connector and the valve core of the valve body together form a one-way conduit.

Sealing rubber ring 208: the reinforcing device that the sealing rubber ring prevents gas from overflowing.

Snap lock 209: The snap lock is one of the important components of the quick connector composed of the valve body and the conduit connector. When all the snaps of the snap lock are inserted into the snap lock slots, the one-way valve is in an open state. When only one buckle of the snap lock is inserted into the slot of the snap lock, the one-way valve is in a closed state.

Buckle lock slot nipple 210: it is a part of the valve body and is the locking device of the buckle lock.

Gas delivery conduit 2: One end of the conduit is connected to the pressure reducing valve of the spare oxygen cylinder, and the other end is connected to the valve body of the safety connection device. It is the main device for the oxygen in the spare oxygen cylinder to flow into the breathing mask.

The principle of installation and use of the oxygen respirator self-rescue supply device on the oxygen respirator is shown in Figure 3. The main components in the figure include: 301, suction valve, 302, supply interface, 303, suction hose, 304, cooling tank , 305, cold accumulator, 306, pressure stabilizing diaphragm, 307, breathing chamber, 308, exhaust valve, 309, positive pressure spring, 310, manual supply valve, 311, alarm, 312, high pressure flow limiting valve, 313, Chest pressure gauge, 314, gas cylinder valve, 315, oxygen cylinder pressure gauge, 316, high-pressure oxygen cylinder, 317, pressure reducing valve, 318, safety valve, 319, automatic replenishment valve, 320, quantitative oxygen supply valve, 321, Cleaning tank, 322, exhalation hose, 323, exhalation valve, 324, mask.

Cooling device 4, the wall of the cooling device adopts a double-layer design, and a vacuum is kept between the outer wall 402 and the inner wall 403, which mainly plays the role of heat preservation. Oxygen flows into the device through the oxygen conduit 401 and contacts the blue ice core 404 for cooling, and the cooled oxygen flows out from the conduit 401 at the other end of the cooling device.

Compared with the self-rescue supply device in the background technology, this device does not need to be equipped with a decompression and quantitative oxygen supply device, which reduces the burden on the operator and is more suitable for field use. The self-rescue supply device is connected through the supply device interface 302 to prevent oxygen from being released. vent. The whole device is transformed from the existing oxygen respirator, and is suitable for various types of oxygen respirator.

The utility model can supply sufficient oxygen to the wearer in time when the oxygen respirator itself has a mechanical failure and cannot supply oxygen normally, helping rescuers complete rescue tasks in extreme disaster environments and ensuring their own safety. In order to avoid the tedious work of replacing the oxygen respirator due to the mechanical failure of the oxygen respirator itself, it saves time for the rescue and relief work in the disaster area.

The foregoing is a preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (7)

1. An oxygen respirator self-rescue replenishment device, comprising a spare oxygen cylinder, a pressure reducing valve device, a cooling device, a gas delivery conduit, a safety connection device, and the conduit is connected to an oxygen cylinder pressure relief valve device and a safety connection device respectively, and is characterized in that, The wall of the cooling device adopts a double-layer design, a vacuum is maintained between the two layers, and a blue ice core is installed inside the cooling device; the safety connection device includes a valve body and a suction pipe, the suction pipe is connected to the valve body, and the suction pipe There is an inhalation pipe interface on it, and the inhalation pipe interface is connected to the supply interface on the inhalation hose of the oxygen respirator; the safety connection device also includes a spring, a valve core, and a conduit connector arranged in the valve body, and one end of the spring is arranged in the At the joint between the suction pipe and the valve body, the other end of the spring is connected to the valve core, one end of the conduit connector is connected to the valve core and a vent hole is arranged between the conduit connector and the valve core, and the other end of the conduit connector is used to connect to the air delivery conduit. 2 . The self-rescue supply device for oxygen breathing apparatus according to claim 1 , wherein the valve body comprises two symmetrical valve body units, and the two valve body units are engaged through locking slots. 3 . 3. The oxygen respirator self-rescue supply device according to claim 1, characterized in that, the air delivery conduit is connected to the conduit connector through a quick connector. 4. The oxygen respirator self-rescue supply device as claimed in claim 3, wherein a snap lock slot corresponding to the snap lock of the quick connector is provided in the valve body, and a snap lock slot is provided between the valve body and the conduit connector. Sealing rubber ring. 5. The oxygen respirator self-rescue replenishment device according to claim 1, characterized in that, the spare oxygen cylinder is provided with a pressure reducing valve device. 6. The oxygen respirator self-rescue supply device according to claim 1, characterized in that an oxygen cylinder switch is also provided on the spare oxygen cylinder. 7. The self-rescue supply device for oxygen breathing apparatus according to claim 1, characterized in that, the valve body is made of aluminum alloy.