141 results about "Respirator" patented technology

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.

A test fixture facilitates non-destructive testing of a protective mask. The test fixture includes a mock facial structure, a clamping form that makes a seal around at least part of the facial structure, and can employ the retaining straps of the protective mask to a make a seal around at least part of the facial structure. In use, the protective mask is tested in situ on the facial structure. In some examples, the clamping form has a negative contour of the mock facial structure or of the outer surface of a protective mask that is to be tested. The testing can include repetitive testing of the fit, structural components (e.g., ultrasonic welds and straps), and the degradation of materials as a function of donning / doffing or environmental factors (e.g., temperature and humidity).

The present invention relates to a portable fill-type air respirator equipped with a combination fill and multi-stage decompression structure, the emergency air respirator providing air containing oxygen to a patient in case of a fire evacuation or emergency. Specifically, without a separate decompression structure, air is rapidly supplied using a built-in decompression valve, compressed air is refilled through a filling port, and high-pressure compressed air is decompressed in multiple stages so that, at the point of discharge, as decompression has taken place multiple times in a decompression section as well as in a discharge channel, the air is discharged in a state that is comfortable for a user to breathe in. Therefore, the present invention ensures reduction in size and portability by filling a high-pressure container with high-pressure air, and supplies high-pressure air to a user at a stable pressure via multi-stage decompression.

The utility model discloses folding particulate matter filter cotton for a respirator, which comprises a first filter layer, a middle filter layer and a second filter layer, the peripheral sealing edges of the first filter layer, the middle filter layer and the second filter layer are fixed together, the middle filter layer is arranged in a cavity between the first filter layer and the second filter layer, and the second filter layer is arranged in a cavity between the first filter layer and the second filter layer. The middle filter layer comprises a plurality of layers of melt-blown cloth, each layer of melt-blown cloth is of a folded wavy structure formed by multiple times of bending, the folding directions of all the layers of melt-blown cloth are the same, and folds are stacked together in a matched mode; the filter cotton is mounted on the respirator, the respirator comprises a mask body, an activated carbon filter box and an outer cover, a mounting hole is formed in the side of the mask body, a connector and a mounting groove are formed in the two sides of the activated carbon filter box respectively, ventilation mesh holes are formed in the mounting groove, the filter cotton is placed in the ventilation mesh holes, and the outer cover covers the mounting groove and is provided with ventilation holes. The air filter is light, thin and breathable, particulate pollutants in air can be effectively blocked by the multiple filter layers, and a good filter effect is provided.

The invention provides a respirator. The respirator comprises an oxygen pipe and a mouth-nose mask. The oxygen pipe is respectively provided with a main air inlet path and a control air path which are communicated with the mouth-nose mask; the main air inlet path is provided with a lever roller type valve and a folding air bag, and the folding air bag expands to extrude the lever roller type valve to be closed when the air pressure of the main air inlet path is increased; the control gas circuit is provided with a control valve, and a pressure sensing diaphragm is arranged in a shell of the control valve and divides the inner space of the shell into two parts. An air inlet hole, an air inlet and an air outlet are formed in the shell corresponding to one side of the pressure sensing diaphragm; one side of the air plug is provided with a connecting rod which is connected with the pressure sensing diaphragm; the main air inlet path is further provided with an air bag valve between the folding air bag and the mouth-nose mask, and an air bag of the air bag valve is communicated with the control air path. The mechanical feedback control system has the beneficial effects that two sets of mechanical feedback control systems which are independent from each other and are logically associated are formed through parallel double-path cooperative control and pure mechanical automatic cut-off design of the main air inlet path and the control air path.

A shell is provided with a water inlet channel, a water drainage channel, an air cavity, a first anti-siphon channel, a second anti-siphon channel and a flow guide channel, so that the internal air pressure and the external air pressure of the water inlet channel and the water drainage channel can be conveniently balanced; the flow guide channel can guide water to flow back to the inner container when water seeps from the first anti-siphon hole and the second anti-siphon hole, the situation that water seeps from the first anti-siphon hole and the second anti-siphon hole and then flows into the first breathing opening is avoided, the water can be prevented from flowing out to the periphery of the inner container from the first breathing opening, cleaning of the dish-washing machine can be facilitated, and the dish-washing machine is convenient to use. And meanwhile, the use experience of a user is improved. In addition, the utility model further discloses the dish washing machine with the respirator.

The invention discloses a valve micro lip-attaching dead-cavity-free in-mask waste gas replacement structure which comprises mask belts, an air filtering mask, an exhaust valve base, an exhaust one-way sealing opening, a one-way exhaust valve plate, a telescopic adjusting pipe, a left nose exhaust pipe, a right nose exhaust pipe and the like. By adjusting the position of the exhaust unit, the exhaust one-way sealing opening is slightly attached to the lip, the nose exhaust pipe is slightly attached to the nostril, the valve plate is directly opened by means of flowing energy of exhaled air, peripheral retention air is injected by means of the Venturi effect, exhaled waste gas is completely exhausted in real time, dead space is thoroughly eliminated, and the problems of oxygen deficit, stuffiness, fogging, stinking and high breathing resistance are solved.

Improved respirator fit test devices including piezoelectric pumps that reduce noise and vibration of the device. The devices may include two or more piezoelectric pumps, wherein a first pump moves sheath air through a differential mobility analyzer and a second pump alternately moves aerosol from inside or outside a respirator through the differential mobility analyzer. A size selected portion of each aerosol sample is then moved through a condensation nuclei counter. Control circuitry enables user selection of a respirator type to be tested, wherein the differential mobility analyzer may be enabled or disabled based on the user selection. The control circuitry further enables calculation of a fit factor corresponding to a quantitative effectiveness of the respirator fitting a user based on signals from the condensation nuclei counter for each aerosol sample.

The invention relates to the technical field of medical equipment, and discloses an external oxygen supply method, an external-oxygen-free oxygen supply method and a quantitative oxygen supply method, and provides three core modes: in an external oxygen supply mode, redundant oxygen during extrusion is recycled and reused through a gas storage bag, and overpressure is prevented in combination with a pressure release valve; in the oxygen supply mode without external oxygen, pure manual extrusion air supply is achieved through a shell which can be replaced or arranged outside the air bag in a sleeving mode, and the device adapts to the oxygen-source-free environment; in the quantitative oxygen supply mode, the inflatable inner bag is arranged in the air bag to accurately limit the oxygen storage space in advance, and accurate control over the single tidal volume is achieved. According to the invention, the oxygen utilization rate is obviously improved, the use safety is guaranteed, and the application capability of the simple respirator in precise ventilation and emergency scenes is expanded.

The utility model relates to an accurate positioning fire-fighting intelligent safety helmet, which comprises a helmet body, and the helmet body comprises a controller arranged on the helmet body, and an environment detection module, a vital sign detection module, an imaging module, a positioning module, a communication module, an alarm module, a voice interaction module and a power supply module which are electrically connected with the controller, the environment detection module is connected with an environment detection device arranged on the helmet body and used for detecting the concentration, temperature and humidity of gas in the environment and transmitting signals to the controller. The vital sign detection module is connected with a vital sign detection device arranged on the helmet body and used for monitoring vital signs of firemen. A mask is arranged on the front side of the helmet body, an air inlet used for being connected with a respirator is formed in the middle of the mask, and goggles are arranged on the upper portion of the mask. A neck cover is arranged at the bottom of the helmet body and used for shielding the neck of a fireman and preventing high-temperature substances or fragments from entering a collar.

This invention provides an air filter material that minimizes pressure loss, is high-performance, and is less prone to clogging; a method for manufacturing the air filter material; a filter material for face masks; and a pleated filter material for face masks. The air filter media (30) of the present invention comprises a fluoropolymer porous membrane (31) and an air-permeable support material (32) laminated on the fluoropolymer porous membrane (31). For the fluoropolymer porous membrane (31), the pressure loss when air passes through at a flow rate of 5.3 cm / s is 80 Pa or less. Based on the pressure loss and the capture efficiency obtained by using NaCl particles with a particle size of 0.1 μm, the PF value determined by the following formula is 20 or more, and the thickness is 10 μm or more. When air containing polyalphaolefin particles with a median particle size of 0.25 μm is continuously passed through at a flow rate of 5.3 cm / s, the dust retention of the above-mentioned polyalphaolefin particles is 15.0 g / m when the pressure loss increases to the level of 250 Pa. 2 above.

A device for assessing particulate matter (PM) exposure in a respirator is provided. The device includes a first PM sensor, a second PM sensor, and a processor communicatively coupled to the first PM sensor and to the second PM sensor. The first PM sensor is configured to measure a PM concentration level inside of the respirator. The second PM sensor configured to measure a PM concentration level outside of the respirator. The processor is configured to determine a ratio of the PM concentration level outside the respirator and the PM concentration level inside of the respirator. The processor is further configured to determine a particulate exposure risk within the respirator based on whether the ratio satisfies at least one predetermined threshold value. The processor is further configured to provide a message indicative of the particulate exposure risk.

The utility model relates to the technical field of long-pipe respirators and discloses an air supply type long-pipe respirator which comprises a respirator body, one side of the respirator body is fixedly connected with a connector, a long hose is inserted into the connector, the upper end and the lower end of the side, close to the connector, of the respirator body are fixedly connected with a mounting frame, and a reciprocating lead screw is rotationally connected into the mounting frame. The reciprocating screw rod is in threaded connection with a mounting ring, one side of the mounting ring is fixedly connected with a mounting plate, and the side, close to the connector, of the mounting plate is in sliding connection with a movable plate, and the mounting plate, the movable plate and the clamping plate are arranged at the connector of the respirator, so that auxiliary clamping can be carried out after the connector is connected with an insertion opening of a long hose; the connection of the long hose and the interface is limited by the clamping plate, the connection is not easy to break, the structure of the long hose at the connection part is supported, the breaking caused by shaking is prevented, the arranged sealing stop block structure is attached to the connection part of the plug of the long hose and the interface, the gap filling is formed, the shaking amplitude of the plug is reduced, and the air leakage is reduced.

The invention provides a sliding type oil seal cup assembly and a respirator. The invention can be used in the technical field of oil seal cups. The sliding type oil seal cup assembly comprises an installation piece, a sliding piece and a sealing piece, the installation piece is provided with a containing groove and a movable opening, and the movable opening is communicated with the containing groove; the oil seal cup is arranged in the accommodating groove; the fixing structure comprises a sliding part and a fixing part which are connected, the sliding part is movably arranged in the movable opening, and the fixing part is movably arranged in the containing groove; when the fixing structure is in the first state, the fixing part is located at the first position and connected with the oil seal cup, and the oil seal cup is fixed to the installation piece. When the fixing structure is in the second state, the fixing part is located at the second position and separated from the oil seal cup, and the oil seal cup can move relative to the containing groove. Therefore, the effect of simply and quickly disassembling and assembling the oil seal cup can be achieved.

The application relates to the technical field of fire rescue equipment monitoring, and discloses a firefighter air respirator residual amount prediction method and system based on dynamic pressure compensation. The method comprises the following steps: acquiring historical consumption time data of firefighters, using polynomial regression fitting to establish a theoretical pressure consumption rate function corresponding to an individual and establishing a theoretical prediction logic; receiving a combat organization instruction to obtain an initial full load pressure, starting timing and calculating and displaying a current theoretical prediction residual pressure; capturing an artificial interactive correction instruction, extracting a correction time node and an actual residual pressure, and solving to generate a dynamic compensation coefficient; applying the dynamic compensation coefficient to reconstruct and solve an actual prediction residual pressure and control and update display; comparing the actual prediction residual pressure with an alarm critical pressure value to trigger an alarm, and extracting actual combat data to iteratively update the theoretical function after the task is completed. The application realizes individualized benchmark prediction of air consumption and dynamic adaptive error correction of the working environment, and improves residual amount early warning accuracy.

The invention relates to the field of intelligent operation and maintenance of power equipment, in particular to a transformer maintenance-free respirator control method integrating temperature, humidity and pressure monitoring and electric heating regeneration and a storage medium. The method comprises the following steps: firstly, deploying a sensor in the respirator, collecting humidity and internal temperature and pressure data of a drying agent, and obtaining accurate data after moving average filtering and temperature compensation; and the control module is combined with the data, a humidity threshold value dynamically adjusted along with the load rate of the transformer and a regeneration period to trigger the regeneration system to start. During regeneration, the electric heating piece heats the drying agent, the fan adjusts the rotating speed according to the real-time temperature and humidity to discharge steam, meanwhile, the moisture absorption capacity recovery rate is corrected by combining aging of the drying agent, and starting and stopping or temperature adjusting delay are conducted according to the standard condition. The process data is uploaded to the operation and maintenance cloud platform through the LoRa module encrypted by AES-128, and the platform analyzes the trend through weighted linear regression and gives an alarm; and operation and maintenance personnel optimize parameters according to the parameters and regurgitate a judgment link. Related programs are stored in the storage medium and can be executed by the processor to achieve the method, and support is provided for maintenance-free of the respirator.

1. Name of the product in this design: Reusable single-filter half-mask respirator. 2. Purpose of this design: This single-filter half-mask respirator is used in conjunction with particulate filter cotton or gas / vapor filter cartridges to enable the user to breathe safely. The respirators shown in Designs 1 and 3 are designed to check for airtightness. 3. The key design points of this product are: the shapes of Design 1 and Design 2, and the combination of shapes and colors of Design 3 and Design 4. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design. 6. Other situations requiring explanation: Designs 3 and 4, for which protection is sought, contain color.

The invention discloses a plateau altitude self-adaptive compensation system and method for an emergency breathing machine. The plateau altitude self-adaptive compensation system comprises a sensing module, a control module, a power module, a gas circuit driving circuit, a man-machine interaction module, an execution module and an additional function module. Acquiring a plateau altitude self-adaptive compensation data set; the plateau altitude adaptive compensation data set comprises altitude height information, fan parameter information, atmospheric pressure information, airway pressure information, gas flow information and temperature information; training a preset fan drive control model by using the plateau altitude self-adaptive compensation data set to obtain an optimized fan drive control model; and processing plateau altitude self-adaptive compensation data to be processed by utilizing the optimized fan drive control model to realize plateau altitude self-adaptive compensation of the emergency breathing machine. The method can adapt to different altitudes and automatically compensate the influence of atmospheric pressure change on tidal volume and minute ventilation output precision.

The invention provides an automatic dehumidification device and method for a drying agent of a transformer oil conservator respirator based on a micro-differential pressure and humidity measurement mixing method. The device comprises a controller and an oil conservator respirator drying agent tank. An outlet in the middle of the upper end of the oil conservator breather drying agent tank is connected with the air inlet end of a transformer oil conservator pipeline through a flange, the lower end of the oil conservator breather drying agent tank is connected with an oil cup, and external air enters from an air inlet in the upper end edge of the oil conservator breather drying agent tank, penetrates through oil in the oil cup at the lower end after being dehumidified through a drying agent and then enters a transformer. After secondary filtering, the dry air is introduced into the transformer; the controller is fixed to the side face of the oil conservator respirator drying agent tank, and a fixed distance is kept between the controller and the oil conservator respirator drying agent tank. The proportion of the silica gel pink blue area in the respirator is calculated through the machine vision technology and the image processing technology, whether the drying function fails or not is judged, and the silica gel pink blue area is heated and dehumidified through the heater.

The application discloses a kind of methods for predicting dust miner's breath flow based on random forest algorithm, including dust miner's breath flow prediction system, the dust miner's breath flow prediction system is by miner's breath characteristic parameter monitoring component, respirator and algorithm prediction module Composition, further include: the miner's breath characteristic parameter monitoring component includes heart rate detector, blood oxygen detection device, temperature tester and portable individual breath monitor, the respirator is viscoelastic silica gel half mask, the respirator is equipped with exhalation valve, the half mask inside and outside both sides are evenly distributed with pressure sensor, the algorithm prediction module is by information receiving unit, central processing unit and information output unit Composition, miner's breath characteristic parameter real-time upload to information receiving unit, and import central processing unit and algorithm prediction are carried out data processing after, and output by information output unit, the method prediction model of the present application is robust, and prediction accuracy is high.

The utility model discloses an isolated respirator mask capable of monitoring the breathing of firemen, a monitoring assembly comprises an exhalation pressure monitoring device, a breathing frequency monitoring device and an exhalation temperature and humidity monitoring device, so that the monitoring assembly can monitor the exhalation airflow pressure, breathing frequency and exhalation airflow temperature and humidity of the firemen in the respirator mask respectively, thereby more comprehensively obtaining the breathing state of the firemen in the respirator mask, improving the monitoring reliability, and through the corresponding control of the air supply state of the respirator mask by the air supply adjusting assembly, ensuring that the firemen can breathe comfortably in the respirator mask, so as to improve the safety.

The utility model discloses a comprehensive protective respirator convenient to replace, and belongs to the technical field of sanitary protective articles. Comprising a mask body and a poison filtering box, and the mask body is detachably connected with the poison filtering box; the side, away from the mask body, of the poison filtering box is detachably connected with a lower cover, the lower cover is detachably connected with an upper cover, the lower cover and the upper cover are arranged in a matched mode to form a cavity, and filtering cotton is placed in the cavity. According to the comprehensive protective respirator, the poison filtering box and the filtering cotton on the comprehensive protective respirator are independently and detachably connected, when one or two of the poison filtering box and the filtering cotton need to be replaced, the poison filtering box and the filtering cotton can be rapidly detached and replaced, the whole filtering piece does not need to be replaced, time and labor are saved, and cost is saved; meanwhile, a certain distance is formed between the two filter materials through the lower cover, so that the problems that the filter materials are damaged and the filtering effect is reduced due to the fact that the two filter materials are placed together at a short distance for a long time are solved.

The utility model discloses a fly ash particulate matter pipeline conveying device which comprises a fly ash particulate matter conveying pipe, a fly ash cover structure and a water spraying structure are installed at the lower end of the fly ash particulate matter conveying pipe, the fly ash cover structure comprises a cover body, openings are formed in the upper end and the lower end of the cover body, the upper end opening of the cover body is small, and the lower end opening of the cover body is large. The upper end of the cover body is fixedly connected with the lower end of the fly ash particulate matter conveying pipe, a plurality of magnets are arranged at the lower end of the cover body, and the magnets can be magnetically connected with the material receiving container, so that an opening in the lower end of the cover body is attached to the interior of the material receiving container; one end of the water pump is connected with the spray head, the other end of the water pump is connected with a water source, and the water pump can spray water from the spray head. Workers do not need to go upstairs and downstairs to transport fly ash every time, and manpower consumption is greatly reduced.

1. The name of the design product: portable individual high-reflection respirator. 2. The use of the design product: oxygen supply respirator. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present invention relates to an industrial dust mask including an oxygen generating element, and more particularly, to an industrial dust mask including a mask body, a fixing band for fixing the mask body to a face of a wearer, an exhaust unit formed in an outer surface area of the mask body and provided with an exhaust port for discharging exhaled air of the wearer to the outside, and an oxygen generating element inserted into an area of the exhaust unit, which receives water vapor and carbon dioxide generated by breathing of the wearer and generates oxygen by a chemical reaction. A through hole is formed in the mask body and the exhaust unit so that a part of the exhaled air of the wearer discharged to the outside through the exhaust port of the exhaust unit is transferred to the oxygen generating element inserted in the exhaust unit through the through hole to generate oxygen. The oxygen generated by the oxygen generating element is supplied to the wearer through the through hole when the mouth and nose of the wearer inhale.

The application discloses a respirator with detection function, waterproof and breathable ventilation, which is provided with an on-off air door and a fan, and the air door is automatically opened when the fan is started and is automatically closed when the fan is stopped. When the precondition of producing condensate water is detected in the device, the device opens the fan and the air door, and high-temperature or high-humidity air can be discharged when the device is started.

This application relates to an electrically powered air-purifying respirator and its exhalation filtration structure, comprising: a soft rubber mask, a core mechanism, a filter element, and an adjustment strap. The soft rubber mask has a mask latch on the front, which axially engages with a mask connecting latch on the rear side of the core mechanism's fan compartment. The filter connecting latch on the front side of the core mechanism's fan compartment axially engages with a filter latch on the rear side of the filter element. These three components can be quickly assembled and disassembled without precise alignment. An electric fan inside the fan compartment operates, causing outside air to be filtered by the filter element into clean air, which then enters the soft rubber mask for the wearer to breathe. Each side wall of the soft rubber mask has an air outlet, covered by a diaphragm. During exhalation, the diaphragm opens, and exhaled air enters the air outlet filter through the enlarged outlet for purification before being discharged, preventing secondary pollution. The adjustment strap can be quickly tightened and prevents loosening. This application offers convenient assembly and disassembly, a secure fit, and highly efficient exhalation filtration, making it suitable for medical and epidemic prevention, industrial protection, and other occasions requiring clean air.

A reusable face respirator mask for respiratory protection comprising a body dimensioned to fit over a portion of a face of a wearer, including a rigid support component and a flexible seal component molded to the rigid support component, a replaceable filtering element sized and configured to removably cover the rigid support component, and a cover configured to removably couple with the rigid support component of the body. The filtering element is used to filter particles and / or pathogens from inhaled and / or exhaled air. A thumb release located on the cover allows the wearer to decouple the cover to accommodate frequent replacement of the filtering element. The flexible seal component is configured to interface with the face of the wearer and deform under moderate pressure to create a substantially airtight seal with the wearer's face.

The utility model discloses a kind of filter elements of self-suction filter type anti-particle respirator, belong to dust respirator technical field, including bottom shell, fixedly arranged in the three-dimensional filter assembly of the bottom shell inside and the upper cover buckled in the top of the bottom shell, the outside of the bottom shell is provided with filter material renewal assembly, electrostatic filter paper is provided between the three-dimensional filter assembly and the upper cover, the both ends of the electrostatic filter paper protrude the gap between the upper cover and the bottom shell and connect on the filter material renewal assembly.The utility model is through the surface filter paper and three-dimensional flow guide structure of renewability, synchronously conquers the double bottleneck of material waste and insufficient air permeability in prior art, while having use comfort along with guaranteeing protection performance.

The respirator is provided with a drainage channel and an air pressure balance channel, the air pressure balance channel can be communicated with the drainage channel and the external atmosphere, the respirator is further provided with a buoy and a sealing piece, the sealing piece has elasticity, and the air pressure balance channel comprises a first channel, a second channel and a valve port channel. The first channel is communicated with the external atmosphere, and the second channel is communicated with the drainage channel; the valve port channel is located in the sealing piece, the valve port channel penetrates through the sealing piece in the thickness direction of the sealing piece, one end of the valve port channel communicates with the first channel, and the other end of the valve port channel can communicate with the second channel; the buoy can move in the air pressure balance channel so as to open or close the valve port channel. Thus, when the buoy closes the valve port channel, due to the fact that the sealing piece has elasticity, abrasion caused by impact can be reduced, and the sealing performance is further guaranteed through cooperation of the buoy and the sealing piece.