659 results about "Respirator" patented technology

The invention provides a respirator self-adaptive control method, system and equipment and a storage medium, and relates to the field of respirator control. The method comprises the steps that physiological parameters and environmental parameters of a respirator wearer and initial running state data of the respirator are obtained, man-machine state evaluation is conducted based on the physiological parameters and the environmental parameters, and a man-machine state evaluation result is determined; determining an initial control strategy of the respirator based on the man-machine state evaluation result and the initial operation state data of the respirator; acquiring historical data in the use process of the respirator, and adaptively adjusting the initial control strategy based on the historical data to obtain an optimized dynamic control strategy; multi-source sensing data of the respirator are obtained in real time, the dynamic control strategy is adjusted in real time based on the multi-source sensing data, and a self-adaptive control strategy is obtained; and the respirator is controlled based on the self-adaptive control strategy. According to the scheme, the wearing comfort and the protection effect of the respirator can be improved.

The invention relates to a test device for bidirectional breathability measurement of textile samples, in particular masks.

The invention relates to a closed powder bag breaking feeding device which comprises a material conveying barrel assembly and a bag breaking barrel assembly, the material conveying barrel assembly is provided with a material conveying barrel body, the material conveying barrel body is hinged to a clamping sealing cover, the clamping sealing cover is composed of two semicircular cover bodies, anti-skid sealing strips are arranged on the opening and closing sides of the two semicircular cover bodies, an upper respirator is arranged on the clamping sealing cover, and a lower respirator is arranged on the bag breaking barrel assembly. A plurality of supporting rods are arranged at the bottom of the material conveying barrel in the radial direction, and a sealing ring is arranged on the outer wall of the material conveying barrel. The bag breaking cylinder assembly is provided with a bag breaking cylinder body, a shaft seat is arranged in the center of the bag breaking cylinder body, a bag breaking cone is arranged on the shaft seat, the bag breaking cone is provided with a cone rod and a plurality of cutting knives, a lower respirator is arranged on the outer wall of the bag breaking cylinder body, and the material conveying cylinder body is inserted into the bag breaking cylinder body and connected with the bag breaking cylinder body in a sealed mode through a sealing ring. Bag breaking and feeding are carried out in a closed and breathable space, dust is prevented from overflowing, a healthy operation environment is provided, feeding loss is reduced, and feeding efficiency is improved.

The present application relates to the technical field of medical equipment, and in particular to a ventilator, which includes a ventilator and a humidifier, which are arranged side by side and interconnected with each other, the ventilator includes a ventilator shell and a pumping mechanism arranged in the ventilator shell, the pumping mechanism includes a pumping shell, a pumping inner shell arranged in the pumping shell, and a pumping assembly arranged in the pumping inner shell, the pumping shell is provided with a pumping port assembly passing through the ventilator shell and connected to the outside of the ventilator shell, a silencer channel connecting the pumping shell and the pumping inner shell is provided between the pumping shell and the pumping inner shell, and the pumping inner shell is provided with an air supply port assembly passing through the pumping shell and the ventilator shell and connected to the humidifier. The present application has the following effects: the silencer channel is used to reduce the airflow noise and the working noise of the pumping assembly, so as to reduce the noise hazard of the ventilator when it is working.

The invention discloses an intelligent air supply mask, and relates to the technical field of protective masks, the intelligent air supply mask comprises a mask main body, and the mask main body is used for covering the mouth and nose of a wearer to form a breathing space; the mask further comprises a filter element assembly, an air outlet valve, a sound transmission assembly, a pressure sensor, an air supply assembly, a control device and a power supply assembly which are arranged on the mask body, the filter element assembly communicates with the breathing space and filters inlet air, the filter element assembly comprises a filter box and a filter element, the filter element is arranged in the filter box, and the filter element is a corrugated filter element; the air outlet valve is communicated with the breathing space for exhausting; the sound transmission assembly is used for transmitting sound; the pressure sensor is used for detecting gas pressure in the breathing space; the air supply assembly is used for assisting in supplying air into the breathing space; the control device controls the air supply assembly to work according to the gas pressure data; the power supply assembly is used for supplying power. Auxiliary air supply can be carried out, follow-up adjustment is achieved, the stuffiness feeling of a wearer is reduced, the service life of the filter element can be prolonged, and the dust containing degree of the filter element can be improved.

The invention discloses an air purifier with breathing and oxygen generation functions, and relates to the technical field of air purification equipment. The placing box is arranged on the other side of the upper surface of the moving plate, and an oxygen generator is arranged on the middle side in the placing box; the filter box is arranged in the placement box; the connecting mechanism is arranged on the supporting plate, the connecting mechanism is connected with the connecting box, a mounting plate is fixed to one side wall of the connecting box, a liquid medicine box and a storage box are arranged on the mounting plate, and the liquid medicine box is communicated with the connecting box through a conveying pipe; the lower end of the vertical pipe of the oxygen pipe is connected with the air outlet end of the oxygen generator through a connecting pipe; the respirator is communicated with the connecting box through a telescopic pipe; a protective cover sleeves and is fixed on the pipeline at the air inlet end of the sucking pump, the protective cover abuts against the top wall of the filter box, and a filter element is embedded in the protective cover; the exhaust mechanism is arranged on the upper side in the placing box; in the air purification process, the corresponding oxygen uptake operation can be selected according to requirements, and the occupied space is reduced while the purchase cost is not increased.

The invention belongs to the technical field of respirators, and particularly relates to an oxygen production tank and a respirator applying the oxygen production tank, the oxygen production tank comprises a tank body for gas circulation, a plurality of partition plates are arranged in the tank body along the gas flowing direction, and the partition plates are arranged in parallel along the direction perpendicular to the gas flowing direction; a reaction flow channel is formed in a gap between every two adjacent partition plates, the side wall of each reaction flow channel is provided with groove positions for positioning a medicament, the groove positions are in a long strip shape in the gas circulation direction, and the multiple groove positions are sequentially arranged side by side in the direction perpendicular to the gas circulation direction; the plurality of slots on the two adjacent clapboards are arranged in a staggered manner; according to the invention, the medicament can be ensured to be firmly fixed and stable in the reaction flow channel without moving, so that the influence of dust generated by the movement of the medicament on the breath of a user can be greatly reduced; and the reaction can be performed in sequence along the flowing direction of the gas, so that the overall reaction balance of the medicament is ensured, the use efficiency of the medicament is improved, and waste is avoided.

The invention discloses an intelligent water level monitoring, regulating and controlling system and method based on a breathing humidifier. A data acquisition module monitors the real-time temperature and humidity in a humidifying water tank, the temperature and humidity of the external environment and the flow of an air source and transmits the acquired data to a processing and identifying module; the processing identification module receives the temperature, humidity and flow data of the data acquisition module, carries out calculation to obtain a key difference value and a change rate index, and carries out function training on the monitored data by constructing a water level monitoring data model; the main control module executes a corresponding humidifying water infusion instruction to the flow control module, and a flow adjusting valve is controlled to adjust the humidifying water infusion water amount; and the alarm feedback module receives an alarm instruction of the main control module and sends out an alarm prompt tone when the processing identification module monitors abnormity. Internal and external data of the breathing humidifier can be monitored in real time, the water level of the humidifying water tank is intelligently regulated and controlled through the data model so as to reach the target temperature and humidity range of the patient end, and therefore the most reasonable airway humidifying scheme is provided for a patient.

The invention relates to the technical field of respirators, and discloses a respirator flow dynamic adjusting system based on airflow sensing, which is characterized in that after starting, a multi-mode sensing module acquires spatial flow velocity distribution and dynamic characteristics of respiratory airflow, and generates a composite data flow fused with flow field information; the composite data flow is subjected to nonlinear analysis to generate a state vector representing breathing stability, and the state vector is used for identifying fluid abnormal risks; the state vector generates an optimized execution instruction set by the self-adaptive control engine in combination with the energy state of thermoelectric conversion; the execution instruction set drives the piezoelectric valve and the shear response humidifying layer to cooperatively adjust the flow and the humidity, and outputs physiologically matched breathing gas; fusion collection of spatial flow velocity distribution and dynamic characteristics of respiratory airflow is achieved through the multi-mode sensing module, the limitation of traditional single-point measurement is broken through, and the sensing precision is remarkably improved; a breathing chaos index is constructed through nonlinear kinetic analysis, and early warning of the breathing rhythm stability and the fluid abnormal risk is achieved.

A set of designs for an electrically heated respirator / face mask to kill or deactivate airborne viruses and bacteria by creating a seamless thermal and / or humidity chamber / barrier around the wearer's nose and mouth area; in addition to efficiently filtering the tiny particles according to NIOSH N95 standards, it reduces the chance of contracting the disease. The designs include various combinations: a disposable or reusable N95 respirator with or without an exhalation valve, disposable or reusable medical face mask, both with or without integrated and replaceable filter layers, and a reusable respirator with filter cartridges. Each design comprises multiple layers with an active thermal filter with a heating element, which is made of graphene. The respirator is connected via a USB cable to a power unit. A control module is used to turn the device on and off and optionally control the inner temperature and humidity through sensors.

The utility model discloses a standby power type air supply long pipe respirator which comprises a respirator main machine and an air inlet chamber, the air inlet chamber is fixedly assembled at the upper right corner in the respirator main machine, a processing chamber is fixedly assembled at the lower left corner in the respirator main machine, and two sets of parallel air inlets are formed in the left side of the outer wall of the processing chamber. A group of negative pressure fans are fixed at the air inlets, a group of filter elements are fixedly clamped at the air inlets, and an automatic brushing mechanism used for cleaning the filter elements to prevent blockage from affecting breathing is arranged in the treatment chamber. According to the standby power type air supply long pipe respirator, by arranging the automatic cleaning and brushing mechanism, particulate matter is prevented from being attached into the filter elements to affect the air flow, it is guaranteed that one of the two sets of negative pressure fans can work smoothly when the respirator is used, and even if one set of filter elements is blocked, the other set of filter elements are not affected to be used; the influence of the blockage phenomenon in the working process on breathing safety is prevented, and the problem of blockage of the filter element is solved.

The respirator is applied to the technical field of bearing boxes, the respirator comprises a respirator body, a cover body and a partition plate, one end of the respirator body communicates with the bearing box, the other end of the respirator body is connected with the cover body in a matched mode, and a gap communicating with the atmosphere is formed between the respirator body and the cover body; a partition plate is further arranged in the respirator body, and a backflow hole used for oil gas backflow is formed in the partition plate. After oil gas in the bearing box enters the breathing head body, the oil gas is cooled and condensed into oil drops in the breathing head body, and the oil drops fall onto the spacing plate and flow back into the bearing box from the backflow holes in the spacing plate. Compared with the prior art, the respirator disclosed by the embodiment of the utility model has the advantages that due to the arrangement of the spacing plate, the condensation length of oil gas in the respirator body is increased, and the condensation time of the oil gas in the respirator body is prolonged, so that the oil gas smoothly flows back into a bearing box after being condensed into oil drops; therefore, the phenomenon that oil gas leaks from the respirator is avoided.

The present invention discloses a multifunctional water tank dishwasher, which is characterized by: comprising an ultrasonic transducer, which is arranged in the inner tank of the dishwasher; an ozone generator, which is arranged on the outer side of the bottom of the tank body; a static spray arm, at least one of which is arranged on the side wall of the tank body; a respirator, which comprises a respirator base connected to the outer side of the side wall of the tank body, and a respirator shell used in conjunction with the respirator base; a ventilation unit, which comprises an air duct air inlet arranged on the respirator base and an air duct connected to the air duct air inlet. The present invention provides a washing power system of a dishwasher, and also provides steam to achieve disinfection of tableware after washing; provides ultrasonic cleaning and spray mixed cleaning functions, which can achieve the cleaning of fruits, vegetables and seafood; and provides an ozone generator to make the chemical bonds of organic pesticides lose their medicinal properties, and kill various bacteria and viruses on the surface, so as to achieve the effect of removing pesticide residues in fruits and vegetables.

The invention discloses a respirator for double spiral channels of a transformer, and relates to the technical field of transformer respirators, the respirator comprises a breathing tube, a rotary valve, a first exhaust pipe, a second exhaust pipe, a main breathing tank, an auxiliary breathing tank, a heating device, a first air inlet pipe, a second air inlet pipe, a reversing valve, a connecting pipe and an oil cup, the rotary valve can change the gas inlet direction, the main breathing tank can absorb moisture in air and prevent the moisture in the air from entering insulating oil of the transformer, and the auxiliary breathing tank can protect the transformer when the main breathing tank is maintained. The heating device can dehumidify the silica gel particles when the moisture absorption capacity of the silica gel particles in the main breathing tank and the auxiliary breathing tank reaches the upper limit, so that the silica gel particles recover the drying function, the reversing valve can change the gas outlet direction, insulating oil in the oil cup can filter out impurities in gas, and the silica gel particles in the main breathing tank and the auxiliary breathing tank can recover the drying function. And insulating oil in the transformer is prevented from being polluted.

The utility model belongs to the technical field of gasification furnaces, and provides a gasification furnace with a liquid oxygen pump, which comprises a furnace body, the furnace body is communicated with a raw gas outlet pipe, the end part of the raw gas outlet pipe, which is positioned in the furnace body, is rotatably provided with a coaxial outlet cover, and the furnace body is fixedly provided with a high-pressure water pump. The high-pressure water pump is communicated with a cleaning pipeline extending into the outlet cover, the end of the cleaning pipeline is communicated with a flushing nozzle for flushing the inner wall of the outlet cover, and a rotating shaft driven by water flow is rotationally installed at the end of the cleaning pipeline. The technical problems that in the prior art, cleaning dead corners exist, dust residues exist in a conical connector, and the cleaning effect is reduced are solved. Compared with the prior art, the cleaning device has the advantages that water flow can be sprayed to all positions on the inner wall of the outlet cover through the flushing spray head, dust on the inner wall of the outlet cover is guaranteed to be completely cleaned, dust residues in the outlet cover are avoided, and the cleaning effect of the outlet cover is improved.

The utility model discloses a crawler-type agricultural machine gearbox heat dissipation device, which relates to the technical field of gearbox heat dissipation, and comprises a gearbox main body, a respirator and a filtering mechanism, the filtering mechanism comprises an air suction joint, a dustproof ring plate is arranged in the air suction joint, a vibration supply connecting part is arranged on a mounting cover, and a jarring part is arranged in the air suction joint; through the arrangement of the dustproof ring plate and the hose, the hose is externally connected with the respirator, so that the air suction joint can be led to a high position with less dust by utilizing the length of the hose, and air enters the air suction joint through the air suction pipe and is filtered by the dustproof ring plate in the air suction process of the respirator; particle dust is blocked on the outer ring of the dustproof ring plate, then external dust is prevented from being sucked into the gearbox to increase the burden of an oil filter, gas is blown into the suction connector from the hose during expiration and blown to the outer side from the inner side of the dustproof ring plate, dust attached to the dustproof ring plate can be blown off, and the dust cleaning effect is achieved.

A respirator has a shell that defines a breathable air zone for a user wearing the respirator. An air flow control system for the respirator has an air delivery conduit within the shell of the respirator, a valve member moveable relative to the air delivery conduit and within the shell to vary the amount of air flow through the air delivery conduit, and a valve actuator outside of the shell of the respirator. The valve actuator is manipulatable by a user of the respirator while wearing the respirator to control movement of the valve member.

The invention discloses a mining ultra-clean fresh air individual supply protection system and method. According to the system, the air inlet end of an air supply barrel is arranged in an air supply roadway, and the air outlet end of the air supply barrel extends into a tunneling roadway; two air supply modes of a local ventilator and an underground compressed air system are adopted; the local fan is mounted at the air inlet end of the air supply cylinder; the compressed air system is arranged along the roadway; the fresh air filter is arranged in a tunneling roadway, a multi-stage filtering assembly is connected with an air supply barrel through a fresh air device air inlet pipe and connected with an ultra-clean air flow bin through an ultra-clean air flow air supply pipe, and a carbon monoxide absorption device and a fresh air device air pump are arranged in the ultra-clean air flow air supply pipe. The individual air supply pipeline is connected with the ultra-clean air flow bin, and the one-way valve, the flow adjusting device and the breathing mask are sequentially arranged on the individual air supply pipeline. The method comprises the steps that fresh air is supplied into the air supply barrel through the local ventilator; the fresh air is deeply purified through the fresh air filter and conveyed into the breathing mask through the individual air supply pipeline. According to the system and the method, personalized clean air supply can be carried out.

A personal respiratory protection device comprising an upper panel, a central panel, and a lower panel, the central panel being separated from each of the upper and lower panels by a first and second fold, seam, weld or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold, seam, weld or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the upper panel has a graspable upper tab, the upper tab being graspable in use to open the device.

The invention relates to the field of drying oven exhaust moisture detection, in particular to an exhaust moisture detection device for a drying oven, which comprises the drying oven, and further comprises a negative pressure air exhaust assembly and a condensation backflow assembly, the negative pressure air exhaust assembly comprises an air bin, a centrifugal fan and a plurality of air exhaust pipes, and one end of each air exhaust pipe is provided with a flaring cover; an air inlet is formed in the flaring cover, a negative pressure valve and a humidity sensor are arranged in the flaring cover, the negative pressure valve comprises a distance ring, an elastic membrane and a first plug pin, the condensation backflow assembly comprises a T-shaped pipe and a spiral condensation pipe, a drainage pipe is connected to the vertical portion of the T-shaped pipe, and a pressure release valve is arranged in the drainage pipe. When liquid water flows into the drainage pipe, the liquid water flows downwards into the pressure release valve, the drainage pipe is opened by the pressure release valve along with the increase of the liquid water amount, so that the liquid water in the drainage pipe is discharged, the internal pressure of the drainage pipe is prevented from being too large, and when the liquid water amount in the drainage pipe is reduced, the drainage pipe is closed by the pressure release valve, so that a large amount of gas is prevented from leaking from the drainage pipe.

The utility model relates to the technical field of fire-fighting self-rescue equipment, and discloses a chemical oxygen fire-fighting self-rescue respirator with a cooling layer capable of efficiently generating oxygen and preventing stagnant air, which comprises a breathing mask, an oxygen generating tank, an air bag and a water bag, the breathing mask is arranged at the top of the air bag, and an annular cooling plate is fixedly arranged on the outer side wall of the oxygen generating tank. The annular cooling plate is of a hollow structure, the water bag is arranged at the bottom of the air bag, water pipes are fixedly arranged on the two sides of the bottom of the annular cooling plate, the ends, away from the annular cooling plate, of the two water pipes are connected with the water bag, and the pipe walls of the two water pipes are provided with a first liquid one-way valve and a second liquid one-way valve respectively. The oxygen generating tank is provided with a water cooling structure, the temperature in the oxygen generating tank can be rapidly reduced, the temperature of oxygen is rapidly reduced to 35-45 DEG C, the oxygen generating efficiency is improved, meanwhile, the oxygen generating tank is arranged in the air bag, the air bag can be effectively prevented from being wrinkled or adhered, the air stagnation phenomenon is completely eradicated, and it is guaranteed that airflow is smooth.

1. The name of this design product: Neck-hanging fresh air blower and mask integrated device. 2. Purpose of this design product: used for dust prevention and air filtering. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention provides a high-precision simulation method for filtering performance of a mining dustproof mask fiber structure. The high-precision simulation method comprises the following steps: establishing a randomly distributed fiber aggregate model; a transient state is activated in Fluent, a turbulence model Realizable k-epsilon is selected, the pressure drop of a mining dust mask and the flow field characteristics of nanoscale fiber gaps are simulated and predicted, a DPM model is activated, the migration track of 0.3-10 [mu] m inhalable particles is tracked, and the dust trapping process of a fiber structure is simulated in the transient state environment. By simulating the influence of different fiber diameters, fiber volume fractions, airflow flows and the like on the filtering performance of the fiber structure of the mining dust mask, the research and development of the high-filtering-performance mining dust mask can be guided in a targeted manner, and the influence of the internal fiber structure of the dust mask on the filtering performance of the dust mask is mastered.

The utility model discloses a high-speed rail gear box respirator, which belongs to the technical field of gear breathing boxes, and comprises a valve body, the bottom of the valve body is provided with a thread structure, a breather pipe is fixedly connected in the valve body, the breather pipe is provided with a first vent hole, a second vent hole and a third vent hole, and the first vent hole, the second vent hole and the third vent hole are fixedly connected in the valve body. By means of the first-stage filter and the second-stage filter, it can be guaranteed that internal oil liquid does not run outwards along with gear oil, it can be guaranteed that external air does not enter a gear box, and therefore the cleanliness in the gear box is not affected; a first vent hole, a second vent hole and a third vent hole are formed and can be suitable for air circulation under different operation conditions of the high-speed rail, the practicability of the device is improved, then the device is conveniently installed through a thread structure, and the sealing performance of the device in the using process is improved through a circular ring and a sealing ring in a second groove.

1. The name of the design product: respirator ventilation tube holder. 2. The use of the design product: ventilation tube holder for high flux respirator, to avoid falling off in use. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to the technical field of respirator protective articles, in particular to a mask sling hot shaping harness which comprises a first module, a second module and a heating mechanism, the second module and the first module are distributed up and down and are both of a long-strip-shaped cuboid structure, and the first module and the second module are fixedly connected through a hinge and can be opened and closed; a first material groove and a second material groove are formed in the side wall of the connecting position of the first module and the second module respectively and form a containing groove used for restraining a hanging belt. And heating mechanisms are mounted in the module I and the module II. The hot shaping harness for the mask hanging belt is simple in structure and convenient to install, and solves the problems that the hanging belt is uneven and curled and deformed in the welding process of the mask hanging belt.

A novel fully-closed protective garment belongs to the technical field of fully-closed protective garments, comprises a protective garment body, and is characterized in that the protective garment body comprises a transparent hood and a positive-pressure closed garment body which are hermetically connected; the positive-pressure closed garment body comprises an upper garment and trousers which are of a sealed integrated structure; a breath collecting assembly is arranged in the protective clothing body and comprises a breath collecting mask fixed to the face of the human body, a hose with one end communicated with the breath collecting mask, a filtering material fixedly arranged in the hose and a negative pressure fan arranged at the other end of the hose. An air leakage prevention zipper for a human body to go in and out is arranged on the positive-pressure closed garment body; an air inlet connector and an air outlet connector which are used for being connected with external air circulation equipment are arranged on the positive pressure closed clothes body. The protective clothing solves the problems that carbon dioxide in an existing protective clothing is not thoroughly removed, a hood fogs, and the visual field of a wearer is affected.

The invention is applicable to the technical field of single-soldier breathing equipment for emergency rescue personnel in plateau anoxic areas, and provides an air oxygenation type respirator which is mainly applied to the field of single-soldier breathing protection for emergency rescue in plateau anoxic areas and comprises a mask, an oxygen bottle and an oxygenation structure assembly. An automatic air oxygenation structure is designed in the air supply assembly structure of the air oxygenation type respirator, when a user wears the air oxygenation type respirator, oxygenation can be automatically conducted on inhaled low-oxygen-content air, and the oxygen supply amount is achieved through cooperation of the oxygenation structure assembly. According to the technical scheme, the portable oxygen supply device has the advantages that the portable oxygen supply device is portable, long-endurance automatic oxygen supply is provided, the oxygen deficit problem that the oxygen content of air is insufficient during breathing in an existing plateau oxygen deficit area is solved in an atmosphere air and oxygen increasing mode, and emergency rescue workers in the plateau oxygen deficit area do not suffer from oxygen deficit during breathing through technical innovation; therefore, the problem of hypoxia reaction when low-altitude rescue workers enter a high-altitude area to carry out rescue is solved, the rescue efficiency is improved, and the device can be used for carrying out oxygen therapy first aid on persons in distress at the first time when medical workers do not arrive.

The utility model discloses a respirator structure of a new energy gearbox. The respirator structure comprises a box body of the new energy gearbox. The respirator body is arranged at the outer port of the bent pipe and is used for filtering dust in the air sucked by the oil tank; the bent pipe is arranged on the side wall of the box body, communicates with the interior of the box body and is used for communicating the box body with the respirator body; a transition sleeve is arranged between the bent pipe and the air hole of the box body; an anti-splashing special-shaped pipe structure and an air pressure balance hole structure with balanced air pressure are additionally arranged, splashing oil in the gearbox is blocked for multiple times, little oil enters the respirator, and therefore it is guaranteed that the respirator cannot leak oil, and the problems that when the oil level is high and the output rotating speed is high, the oil quantity of the splashing oil is large, and oil leakage is caused are solved. The problem that oil enters the respirator body to cause oil leakage is solved, the phenomena of running, overflowing, dripping and leaking of the oil of the gearbox are reduced, and the reputation and the market competitiveness of the product are improved.

The utility model relates to the technical field of underground self-rescue equipment, in particular to a portable underground self-rescuer which comprises an oxygen bag, an air suction pipe, a connecting pipe and a connecting assembly. A connecting pipe is fixedly arranged on the oxygen bag in a communicating manner, and an external thread is arranged on the connecting pipe; the connecting pipe is sleeved with a protective sleeve, a rubber pad is fixedly arranged at the end of the protective sleeve, the protective sleeve is in threaded connection with the external threads, and the protective sleeve is connected with the oxygen bag in a clamped mode. The air suction pipe is connected with a respirator, and the air suction pipe is connected with the connecting pipe through a connecting assembly; the air suction pipe and the connecting pipe can be quickly disassembled and assembled through the connecting assembly, replacement operation during use of the oxygen bag is facilitated, oxygen in the oxygen bag is more quickly and efficiently conveyed into the air suction pipe, meanwhile, the oxygen conveying airtightness is guaranteed, it is guaranteed that people continuously inhale oxygen during escape under the emergency situation, and the escape efficiency is improved.