280 results about "Respirator" patented technology

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.

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.

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.

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 invention discloses a dustproof and anti-poison series labor protection appliance, and particularly relates to a valve cavity isolation anti-return exhaust valve structure. The mask comprises a mask shell, a double-valve-box assembly, an inter-valve isolation cavity, a valve plate positioning nail, an outer valve plate, an outer sealing opening, an inner sealing opening, an inner valve plate, a filter box clamping position and an air filter box. The double-valve-box air exhaust valve is mainly characterized in that a traditional one-way air exhaust valve is replaced with a double-valve-box assembly, an inter-valve isolation cavity is formed between an outer valve plate and an inner valve plate, and dust is blocked through the Venturi effect and the trapping effect of a low-pressure vortex area; even if dust is clamped between the outer valve plate and the outer sealing opening, the dust can be removed during next expiration, and it is guaranteed that no dust is accumulated on the edge of the inner valve plate. The problems that an existing dustproof mask, an existing gas mask and an existing mask with a valve are not tightly closed, exhaust is not smooth, and closing of a valve plate is delayed due to the fact that dust is stuck to a sealing opening are solved, and the protection performance and the wearing comfort are improved.

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).

1. Name of the designed product: half-face respirator. 2. Use of the designed product: for dust and toxic gas protection. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view.

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.

1. The name of the design product: the main body of air-supplied respirator. 2. The use of the design product: the overall use is to provide breathable air for people in the environment where the air quality is polluted, harmful or unsuitable for breathing; the local use is as the main body of air-supplied respirator. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

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 utility model discloses a multi-filter element respirator which comprises an air inlet hopper, the top of the air inlet hopper is fixedly connected with an end socket communicated with the air inlet hopper, the top of the end socket is fixedly connected with an end plate, the outer wall of the end plate is fixedly connected with a fixing ring, the top of the fixing ring is fixedly connected with a cylinder communicated with the fixing ring, and the top of the cylinder is fixedly connected with a filter element. A sealing head communicated with the barrel body is fixedly connected to the top of the barrel body, a plurality of PTFE microporous filter elements are mounted on the end plate in a sealing manner, a water receiving disc is fixedly connected to the outer wall of the sealing head, and a drainage pipe communicated with the water receiving disc is fixedly connected to the bottom of the water receiving disc. The filter element can be replaced, the filtering capacity of the respirator is effectively improved, the service life of the filter element is prolonged, and the use safety is improved.

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 belongs to the technical field of vehicle safety, and discloses an underwater oxygen supply system, a vehicle and an oxygen supply method. The system comprises a depth sensor, a disability sensor, a snorkeling assembly, a water lung assembly and at least one respirator, the snorkeling assembly can communicate the respirator with external air, and the water lung assembly can supply oxygen to the respirator. By means of the system, the snorkeling assembly can be selectively used for supplying air or the water lung assembly is used for supplying oxygen to passengers according to the preset depth, on one hand, the phenomenon that when the immersion depth is too large, the snorkeling assembly cannot supply external air to the multiple passengers is avoided, the passengers can still obtain oxygen continuously under the condition that the immersion depth is large, and the safety of the passengers is improved. On the other hand, when it is detected that the passenger is disabled and cannot take the respirator, oxygen is directly supplied to the passenger compartment through the water lung assembly, the oxygen content in the passenger compartment can be increased, normal breathing of the passenger is maintained, and therefore the self-rescue time of the passenger and the rescue time of outside personnel are prolonged.

A disposable, flat-fold respirator is presented that includes a mask body that includes a plurality of panels which may fold in towards each other and may unfold into an open configuration. The mask body includes a single layer of charged filter material. The plurality of panels includes an upper panel, a lower panel, and a central panel. The central panel is connected to the upper panel and lower panel. The respirator filters at least 95% of airborne particles with a mass median aerodynamic diameter of 0.3 µm. A harness is secured to the mask body.

The utility model relates to an integrated cleaning machine which comprises a first water tank, a first dish washing machine with a cleaning inner container and an overflow seat, a first breather is arranged on a first air outlet of the cleaning inner container, and a first air inlet of the overflow seat is communicated with a first air outlet end of the first breather through an exhaust pipe. An air flow channel and a water flow channel are arranged in the exhaust pipe in the length direction, exhausted air is exhausted from the first air outlet end to the first air inlet through the air flow channel, and condensate water formed in the exhaust pipe flows to the first air outlet end of the first respirator through the water flow channel. Compared with the prior art, water and air in the exhaust pipe can be separated, formed condensate water is prevented from hindering exhaust, the exhaust pipe is prevented from being blocked, the exhaust efficiency is guaranteed, bubble sound generated when the condensate water is blown by airflow can be avoided, working noise is reduced, and the use experience of a user is improved.

The utility model relates to an oil gas collector for a compressed air inflator, and aims to solve the problems of environmental pollution and potential safety hazards caused by the fact that the compressed air inflator discharges a large amount of waste gas containing oil gas in the pollution discharge and pressure relief process in the prior art. In limited space operation, the positive pressure type air breathing machine is necessary equipment for firefighters and rescue personnel and is used for preventing inhalation of harmful poison gas, smoke and pollutants. After operation is finished, a compressed air inflator needs to be used for inflating a respirator gas cylinder, but manual pressure relief and pollution discharge are needed after inflation reaches a certain pressure, waste gas discharged in the process contains a large amount of oil-gas mixture, indoor wall and ground pollution is caused, oil gas is flammable and explosive, and potential safety hazards exist.

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.

The utility model discloses a metering device and a battery production system. The metering device comprises a metering tank, a respirator and a dust removal mechanism. Wherein the metering tank comprises a tank body and a weightometer arranged on the tank body; the respirator is provided with an air inlet and an air outlet, and the air inlet is communicated with the The dust removal mechanism and the respirator are arranged at intervals, and the dust removal mechanism is provided with a dust suction opening corresponding to the air outlet. According to the technical scheme, the possibility of dust explosion is reduced.

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 invention provides a novel underwater 30-meter diving and rising device, and relates to the technical field of ocean life-saving equipment, the novel underwater 30-meter diving and rising device comprises a wearable device and a life supporting assembly, the life supporting assembly comprises a high-pressure air bottle, the output end of the high-pressure air bottle is provided with an air conveying pipeline, and the tail end of the air conveying pipeline is provided with a rescuer air supply pipeline and a rescued air supply pipeline; a rescuer breathing mask is arranged at the tail end of the rescuer air supply pipeline, multiple sets of semi-closed breathing masks and a safety air bag are arranged at the tail end of the rescued air supply pipeline, multiple sets of handles are arranged on the safety air bag, and rescue ropes are arranged on the multiple sets of handles. According to the device, the air supply function, the buoyancy lifting function and the towing function are integrated, a rescuer does not need to carry out complex respirator sharing operation when the rescuer exhausts physical strength to drag a rescued person, the requirements for the physical ability and the technology of the rescuer are greatly reduced, the rescue action is more efficient and reliable, the rescue efficiency and the success rate are improved, and the burden of the rescuer is reduced.

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.

Disclosed in the present invention is a respirator filter element for increasing an effective filtration area. The respirator filter element comprises two or more filter layers, one or more separators, and a connector, wherein two adjacent filter layers are separated by means of one separator to form an air flow cavity, and the separator is connected to the filter layers on two sides in a covered and sealed manner; and the two adjacent filter layers and the separator therebetween enclose the air flow cavity, a through hole is provided on the outer side of the outermost filter layer, and the connector, which connects to a respirator, is mounted at the through hole. Compared with existing filter elements, the filter element of the present invention has a larger effective filtration area, a simpler structure, and better air permeability and comfort.

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.