43 results about "Inhalation Valve" patented technology

The utility model belongs to the technical field of emergency rescue, and particularly relates to an air respirator mask and a system. The air respirator mask comprises a mask body and a transparent face mirror, a mouth and nose mask is arranged in an inner cavity of the mask body, an air circulation area is formed between the outer portion of the mouth and nose mask and the inner side of the face mirror, two air suction valve plates are symmetrically arranged on the mouth and nose mask, and a double-mouth breathing seat is arranged on the face mirror. The double-port breathing seat is provided with an inspiration valve connector and an exhalation valve connector, the inspiration valve connector is used for being connected with an air respirator air bottle and an air supply valve of the air respirator air bottle, and the inspiration valve connector is used for being connected with an exhalation valve seat which can be freely inserted and detached. By designing the double-port breathing seat and the exhalation valve seat capable of being freely inserted and detached, when gas in air exhalation is completely consumed, on the premise that an air respirator mask and an air supply valve of the air respirator mask are not detached, the exhalation valve seat is pulled out, and a chemical oxygen respirator is inserted into an exhalation valve interface, so that closed-loop type oxygen support can be provided for a wearer; and the respiratory protection time of rescuers is prolonged.

The invention relates to the technical field of medical instruments and digital health, in particular to an intelligent device of a child respiratory training device and a using method thereof, and the intelligent device comprises a silica gel nozzle, a plastic inlet piece, a mode disc, a silica gel suction valve, an adjusting spring, a frequency ball, an airway cavity, a strength disc, a detection module, an air inlet and outlet grating, a spring sliding piece, a silica gel exhalation valve and a mapping system; the mapping system comprises a self-adaptive algorithm module and a game mapping module. The self-adaptive algorithm module is used for calculating a gear and a training mode required by a user based on personal information of the user; the game mapping module sets a game scene and a training feedback mode based on breathing training of a user. The breathing mode and the training intensity are adjusted through a pure mechanical structure, the problem of insufficient user compliance is solved by combining breathing training with a game dynamic mapping engine, and the problem of individual difference is solved through a self-adaptive algorithm.

The utility model discloses a medicine suction bottle for nebulization therapy, which relates to the technical field of medical instruments and comprises a bottle body, a detachable base is arranged on one side of the bottle body, a large whistle and a small whistle are mounted on the base, an air suction valve is arranged on the other side of the bottle body, a suction nozzle is sleeved outside the air suction valve, and the suction nozzle is sleeved outside the bottle body. An air valve support, an air valve block installed on the air valve support and an air valve cover arranged outside the air valve support in a sleeving mode are further arranged on one side of the suction nozzle, a cover cap is connected to one side of the suction nozzle, and a medicine feeding cavity is formed in the bottle body. Due to the fact that the inhalation valve of the duck tongue valve structure is arranged on one side of the bottle body, a patient inhales from the position of the suction nozzle during use, the inhalation valve can be opened under the action of pressure, the inhalation valve is closed under the action of pressure during exhalation, and air is exhausted from an exhaust mechanism composed of the air valve support, the air valve block and the air valve cover. The device is simple and reasonable in structure, convenient to use during medicine suction and good in use effect.

The utility model relates to the technical field of semiconductor manufacturing, in particular to a breather valve and a semiconductor temperature control device, the breather valve comprises a shell, the shell is provided with an inner cavity, a first through hole and a second through hole, and the first through hole and the second through hole are respectively communicated with the inner cavity; the air suction valve plate is arranged in the first through hole and is movably connected with the shell through a first adjusting component; the exhalation valve plate is arranged in the second through hole and is movably connected with the shell through a second adjusting part; the breather valve is suitable for being switched between an inspiration state and an expiration state, in the inspiration state, the inspiration valve plate opens the first through hole, the expiration valve plate closes the second through hole, in the expiration state, the inspiration valve plate closes the first through hole, and the expiration valve plate opens the second through hole. When the breathing valve is applied to the circulating liquid system of the semiconductor temperature control device, the breathing function of the circulating liquid system can be realized by arranging the breathing valve capable of simultaneously meeting the requirements of high and low temperature areas through a special structural design, the customization cost is reduced, the structure is simple, and the stability of the circulating liquid system is improved.

The utility model relates to a respiratory protection mask provided with a sealing self-checking device, and belongs to the technical field of respiratory protection sealing detection of protection masks. The sealing self-checking device is composed of a mask body, an elastic key, an inspiration valve seat channel, an inspiration valve, a filtering element connector, an air channel and a locking ring, the elastic key made of silica gel or rubber materials is adopted to press and block an air inlet channel, and due to the fact that the elastic key is soft, the plane contact sealing effect of the elastic key and the inspiration valve seat channel is good after the elastic key is pressed; after pressing, the fingers are released to restore the original shape, and the operation is convenient; the device can be suitable for breathing protection masks such as full face masks, half masks, single-filtering-element connectors and double-filtering-element connectors. The defects that in the prior art, detection illusion is easily caused by a self-detection method of blocking an air inlet by hands, and an airtight detection cover plate needs to be closed by driving a hinge to rotate through a pull rod in a manner of adopting the airtight detection cover plate, operation is inconvenient, a user feels oppressed when closing the airtight detection cover plate, and the airtight detection cover plate needs to be pressed down again to return are overcome.

The application discloses a training mask for COPD patients, and relates to the technical field of medical devices.The training mask comprises a mask body, a one-way inhalation valve arranged on the left side of the mask body, an oxygen access port arranged on the right side of the mask body, a thread structure arranged on the oxygen access port, an adjustable anti-resistance exhalation module arranged at the front end of the mask body, and a resistance adjusting knob arranged on the side of the adjustable anti-resistance exhalation module.The adjustable anti-resistance exhalation module is matched with the resistance adjusting knob and a variable resistance valve sheet, so that multi-stage adjustment of exhalation resistance is realized, the training needs of different patients and different disease stages are met, and the pertinence and effectiveness of the training are improved.The training mask is integrated with a cough auxiliary triggering module, a gear shifting knob and a manual gear adjusting mechanism, so that quick switching between a training gear and a cough gear is realized, the exhalation resistance can be instantaneously reduced during the cough training, the patients can complete effective cough actions, and the airway clearance ability is improved.

A kind of breathing valve for facilitating online monitoring, including valve body, setting and exhalation valve assembly and inhalation valve assembly in valve body, the exhalation valve assembly and inhalation valve assembly all include valve seat, valve disc and guide rod, the valve body top is fixedly connected with valve cover, the inside of the valve cover is equipped with the movement channel for accommodating guide rod lifting, the top of the valve cover is equipped with proximity switch sensor, the proximity switch sensor is electrically connected with external monitoring center by electric connection line or wireless connection, the guide rod is close to or away from proximity switch sensor by lifting action in movement channel, the proximity switch sensor sends guide rod distance change to monitoring center after sensing.

The invention relates to a waterproof breathable structure and a gauge pressure sensor, and relates to the technical field of pressure detection. The waterproof ventilation structure comprises a first shell, an exhalation valve and an inhalation valve, wherein the exhalation valve is in one-way communication from inside to outside only when the inner and outer pressure difference is larger than first opening pressure (P1), and the inhalation valve is in one-way communication from outside to inside only when the outer and inner pressure difference is larger than second opening pressure (P2). The first shell is provided with an inner cavity and a ventilation channel communicating the inner cavity with the environment. Reliable waterproof and dustproof protection can be achieved, the change of internal and external pressure difference can be quickly responded, and pressure balance is carried out.

The invention relates to the technical field of biochemical protection, in particular to a mask connector base structure for a gas mask, which comprises a tank body, and the inner wall of the tank body is provided with threads to serve as a tank connector for being connected with a gas filter tank; a center hole penetrates through the center of the inner bottom surface of the tank body, a circle of vent holes are formed in the periphery of the center hole, a gasket limiting groove is formed in the edge of the inner bottom surface of the tank body, and a plurality of rectangular grooves are formed in the gasket limiting groove; an air suction valve piece covering the vent hole is installed on the outer side of the bottom face of the tank body through a rivet, and the rivet is fixedly connected to the center hole. The gas mask gasket is reasonable in design, the gasket can be effectively prevented from falling off, the use reliability of a gas mask is improved, the daily guarantee difficulty of the gas mask is reduced, and the gas mask gasket has good practical application value.

A piston (18) of a compressor (1) partitions the inside of a cylinder (17) into a compression chamber (21) and a suction chamber (22). A communication passage (19A) is formed in the piston (18). The communication passage (19A) establishes communication between the compression chamber (21) and the suction chamber (22). The suction valve (23) opens and closes an opening (19A1) of the communication passage (19A). The suction valve (23) has a plate-like shape. The suction valve (23) includes a fixation portion (23A) fixed to the piston (18), a closing portion (23B) configured to cover the opening (19A), and a spring portion (23C) connecting the fixation portion (23A) and the closing portion (23B). A spring portion facing portion (19B) in the piston (18), which faces the spring portion (23C) of the suction valve (23), is recessed more deeply than a closing portion facing portion (19C), which faces the closing portion (23B) of the suction valve (23).

A device, system, and method for a suction valve assembly for a medical device. The suction valve assembly includes a valve member having a valve shaft that slides within a valve well. The valve shaft includes one or more slits and is biased to expand outward and compress the inner wall of the valve well.

The embodiment of the present application discloses a safety valve, an inhalation valve and a breathing machine, wherein the safety valve comprises a mounting seat, a closing assembly and a driving assembly. The mounting seat is provided with a ventilation channel; the elastically connected closing assembly has a first position capable of closing the ventilation channel and a second position capable of opening the ventilation channel on the mounting seat; in a free state, the elastic force forces the closing assembly to be located at the first position or the second position; the driving assembly can drive the closing assembly to move against the elastic force, so that the closing assembly is transformed between the first position and the second position. By setting the closing assembly, the closing assembly is elastically connected to the mounting seat; in a free state, the closing assembly can be located at the first position capable of closing the ventilation channel or at the second position capable of opening the ventilation channel under the action of the elastic force; by cooperation of the driving assembly and the elastically arranged closing assembly, the opening and closing of the ventilation channel can be realized, the structure is simple, the cost is reduced, and assembly is relatively convenient.

Embodiments of the present application disclose a compliance and leakage determination method and device, equipment and a storage medium, the method is applied to a breathing assistance system including at least a gas flow pipeline provided with an inhalation valve, the method comprises: obtaining real-time flow rate flowing through the inhalation valve and simulation breathing data, the simulation breathing data includes inhalation data and exhalation data; the inhalation data includes inhalation start time and inhalation end time, and the exhalation data includes exhalation start time and exhalation end time; determining pipeline compliance of the gas flow pipeline by using the real-time flow rate, the inhalation start time, the inhalation end time, the exhalation start time and the exhalation end time; and determining system leakage of the breathing assistance system by using the exhalation start time and the inhalation start time. Through the above manner, the self-checking of the leakage and compliance of the breathing assistance system can be realized without using high-precision flow sensors and flow control valves, and the cost is effectively reduced.

The present invention belongs to the technical field of manufacturing high-altitude oxygen masks, and particularly relates to a high-altitude oxygen supply and oxygen-saving respirator. The present invention is composed of an oxygen storage cotton protective cover, oxygen storage cotton, an oxygen storage cotton base, a headband connecting band, a storage cotton inlet pipe, an oxygen mask body, an oxygen inlet pipe, an oxygen coil pipe, an inhalation valve seat, a normally closed negative pressure one-way inhalation valve, a normally closed positive pressure one-way exhalation valve, an exhalation valve seat, and a duckbill one-way drainage valve. When used at high altitudes, the present invention has the oxygen storage function of the oxygen storage cotton, realizes the oxygen accumulation and supply in the respirator with low-flow oxygen supply; has a sealed structure design, and the opening and closing combination of the mask valve group is driven by the human breathing pressure and automatically matches the human breathing rhythm, thereby improving the utilization rate of oxygen and realizing the economical use of oxygen carried at high altitudes; has the functions of reducing the oxygen supply temperature difference and dehumidifying inside the mask, and improves the comfort during long-term use.

This application provides a flow control method for an electronically controlled flow meter and an anesthesia machine. The method includes: during the entire inspiratory-expiratory cycle, the electronically controlled flow meter only outputs fresh gas during the inspiratory phase; when outputting fresh gas during the inspiratory phase, the shape of its flow waveform is the same as the flow waveform of the inspiratory valve of the respiratory delivery unit. The advantage of this application is that, compared to traditional methods, the time to reach the target pressure or tidal volume is several inspiratory-expiratory cycles faster.

The utility model discloses a multifunctional atomization mask for pets, which comprises a mask body, and the mask body is formed by folding a fan-shaped annular panel and is fixed into a conical structure through a first magic tape; a first silica gel layer is arranged on the inner side of the small end of the mask body, and a second hook-and-loop fastener is arranged on the outer side. A telescopic sleeve is fixed to the large head end of the mask body through a third hook-and-loop fastener, a base plate is fixed to the bottom of the telescopic sleeve through a zipper, and an atomization / oxygen catheter insertion hole and a one-way inhalation valve are arranged on the base plate. A breathing hole and a one-way exhalation valve are arranged on the conical face of the mask body. The mask body used in daily life and atomization oxygen inhalation treatment are combined together, the mask body is reinforced and fixed through the neck support, the telescopic sleeve and the base plate are fixed to the mask body, an atomization oxygen inhalation space is formed, the telescopic sleeve can be adjusted according to the size of the head of a pet, the application range is wide, and the pet can be conveniently treated.

A breathing gas supply system, potentially for combat aircraft, operative to decrease hypoxia and asynchronous breathing and to conserve breathing gases. An input valve selectively permits breathing gas to fill a flexible gas reservoir through a fluidic connector. Breathing gas can be maintained at an elevated pressure. The fluidic connector delivers gas to an output interface, such as an oxygen mask. An inspiratory valve is permitted to open when inspiration is sensed by an inspiratory sensor, and an expiratory valve is permitted to open when expiration is sensed by an expiratory sensor. The inspiratory and expiratory sensors can be separate or embodied as an inspiratory-expiratory sensor. A sensor reservoir fluidically open to a volume between the output interface and the face of the user can expand or compress to indicate inspiration or expiration. The inspiratory and expiratory valves can be electromagnetically operated.

The invention relates to respirator technology, in particular to an adaptive auxiliary air supply respirator and a control method thereof. The respirator comprises: a sealing face shield covering the area of the mouth and nose, an internal chamber being formed within the sealing face shield; an exhalation valve connected to the sealing face shield, communicating with the internal chamber, and configured to open unidirectionally during exhalation; an intake chamber located inside the sealing face shield and equipped with an inhalation valve which opens unidirectionally during inhalation; a filter mounted on the sealing face shield and communicating with the intake chamber; and an auxiliary air supply mechanism comprising a fan extending into the intake chamber, a controller for controlling a speed of the fan, and a sensor arranged inside the sealing face shield. The fan draws external air, accelerating during inhalation and decelerating during exhalation, improving user experience.

The utility model relates to a double-channel gas-defense and dust-proof mask, and belongs to the technical field of protective equipment. The double-channel gas-defense and dust-proof mask comprises a mask body, a filter box, an exhalation cover, an inspiration valve element and an exhalation valve element. Filter boxes are mounted on the two sides of the mask body through clamping structures; the mask is characterized in that the mask body on the inner side of the filter box is provided with an air suction valve core through a ventilation structure; an exhalation valve core is arranged at the lower end of the mask body through a ventilation structure; and an exhalation cover is mounted on the mask body on the outer side of the exhalation valve core through a clamping structure. The double-channel gas-defense and dust-proof mask is compact in structure and ingenious in design, solves the problems that an existing dust-proof mask is prone to damage, unsmooth in circulation and prone to liquid collection inside, and meets the use requirements of people.

The invention discloses a pulse type automatic oxygen inhalation device which comprises an oxygen inhalation mask and a shell, a gas circulation cavity and a mixed gas cavity communicated with the gas circulation cavity are formed in the shell, an inhalation valve clack of the oxygen inhalation mask is communicated with the gas circulation cavity, a spring limiting frame is arranged in the gas circulation cavity, and the mixed gas cavity is communicated with the gas circulation cavity. The upper side of the spring limiting frame is connected with a first spring, the upper end of the first spring is connected with a breathing activity silica gel membrane, a magnetic sheet is embedded in the breathing activity silica gel membrane, the lower side of the spring limiting frame is connected with a second spring, and the lower end of the second spring is connected with a magnetic rubber plate. The edge of the breathing activity silica gel membrane and the inner wall of the shell are sealed, the breathing activity silica gel membrane is connected to the upper end of the shell in a clamped mode, gas in the mixed gas cavity enters the gas circulation cavity through magnetic attraction force generated by the magnetic sheet and the magnetic rubber plate and under the action of the upper spring and the lower spring, and automatic oxygen inhalation is achieved.

A respiratory delivery care system is characterized by comprising: a mechanical flow indicator movable in response to a user's inhalation and / or exhalation, and an electronic indicator operable in response to an electronic signal transmitted in response to the movement of the flow indicator. The flow indicator is an inspiratory valve, an expiratory valve, or an axially movable actuator. The delivery device includes a retaining chamber wound with a coil and at least one magnet disposed at the center of the coil, the at least one magnet being reciprocating to sense current and store the current in a supercapacitor connected to the circuitry and the electronic indicator. A respiratory delivery device is characterized by comprising: a flow indicator configured to transmit a first input signal, a metered-dose inhaler in communication with the retaining chamber, a lever for actuating the inhaler and having a sensor to transmit a second input signal, and a processor for receiving these signals to generate an output signal.

An oxygen delivery apparatus operable to provide oxygen to a user wherein the invention includes a low volume mask body sealably secured over a user's mouth and nose. A gas source is operably coupled to the mask body with a first delivery tube. The first delivery tube has a portion thereof disposed within a second delivery tube. The delivery tubes are operably coupled to an inspiratory valve distal to the gas source. The inspiratory valve is operably coupled to the mask body providing gas flow thereinto in response to a user's inhalation. The mask includes a perimeter seal and employs a strap configuration to sealably secure the mask body to the face of the user. Integrally formed into the mask body are a plurality of expiratory valves. The expiratory valves are comprised of three layers and move between a closed position and an open position along the rearward perimeter edge.

A breathing gas supply system (10), potentially for combat aircraft, operative to decrease hypoxia and asynchronous breathing and to conserve breathing gases. An input valve (26) selectively permits breathing gas to fill a flexible gas reservoir (34) through a fluidic connector (28). Breathing gas can be maintained at an elevated pressure. The fluidic connector (28) delivers gas to an output interface (14), such as an oxygen mask (14). An inspiratory valve (30) is permitted to open when inspiration is sensed by an inspiratory sensor (32), and an expiratory valve (48) is permitted to open when expiration is sensed by an expiratory sensor (32). The inspiratory and expiratory sensors (32) can be separate or embodied as an inspiratory-expiratory sensor (32). A sensor reservoir (58) fluidically open to a volume between the output interface (14) and the face of the user can expand or compress to indicate inspiration or expiration. The inspiratory and expiratory valves (30, 48) can be electromagnetically operated.

A device for delivering a gas to a user. The device includes a patient interface configured to surround a user's mouth and nose. The device also includes an outer chamber configured to receive gas from an external supply, where the outer chamber is secured to a patient-facing side of the patient interface, and includes one or more vent holes, where the one or more vent holes are configured to close when the device is secured to a user. The apparatus further includes a reservoir in fluid communication with the outer chamber; a connector configured to receive a gas flow from the outer chamber, the connector including one or more openings to allow gas exchange between the connector and the reservoir; an interior chamber in fluid communication with an airway of a user; one or more suction valves configured to allow gas to flow from the reservoir into the interior chamber when the gas pressure in the reservoir is higher than the gas pressure in the interior chamber; and an exhalation valve configured to allow gas to flow out of the device when gas pressure in the interior chamber exceeds ambient pressure.

This utility model relates to a breather valve with online adjustable discharge pressure, belonging to the field of valves. It includes a valve body and a valve disc. The valve body has an inlet, an exhalation outlet, and an inhalation outlet. The valve disc consists of an exhalation valve disc and an inhalation valve disc. The exhalation outlet has an exhalation valve seat that cooperates with the exhalation valve disc, and the inhalation outlet has an inhalation valve seat that cooperates with the inhalation valve disc. The inlet has a flange for connection to a pressure vessel. Its key feature is that the exhalation valve disc consists of a diaphragm sealing gasket and a water injection chamber. The diaphragm sealing gasket is sealed on the lower end face of the water injection chamber and cooperates with the sealing surface of the exhalation valve seat to form an exhalation sealing pair. A water injection pipe is provided on the upper end face of the water injection chamber, and water is injected into the inner cavity of the water injection chamber. A guide device is provided between the outer circumference of the water injection chamber and the valve body. By controlling the amount of water injected into the water injection chamber, the exhalation pressure can be set and adjusted, offering advantages such as accurate exhalation pressure setting and high online exhalation pressure adjustment precision.

The invention belongs to the technical field of medical instruments, and particularly discloses a medical care atomizer which comprises a counterweight base, a main machine arranged on one side of the counterweight base and an input pipe connected to the main machine. The breathing assisting cylinder and the breathing assisting cylinder are fixed above the balance weight base in a suspended mode, the three-way pipe is arranged between the breathing assisting cylinder and the breathing assisting cylinder, the double-channel breathing assisting atomization mechanism is in linkage fit with the breathing assisting cylinder and the breathing assisting cylinder, and the respiratory capacity adapting mechanism is used for driving the double-channel breathing assisting atomization mechanism to act. By arranging the auxiliary driving device, when a patient inhales, the inhalation valve can be actively opened, the exhalation valve can be actively closed, and auxiliary pushing force is applied to medicine mist; when the patient exhales, the opposite action is executed, and the exhaled air is guided to the filtering system, so that the accurate and synchronous opening and closing of the valve and the efficient conveying of the medicine mist can be realized even for a special patient with a weak respiratory function, the medicine waste is avoided, and the respiratory pressure of the patient is obviously reduced.

The invention discloses a breathing machine system with a temperature and humidity monitoring function, and belongs to the technical field of breathing treatment equipment. In the breathing machine system, an inspiration port of a breathing machine is communicated with an air inlet port of a heating humidifier through a pipeline, and an expiration port of the breathing machine is communicated with a first branch pipe of a Y-shaped pipe through a pipeline; an air outlet port of the heating humidifier is communicated with a first port of the three-way joint; a second branch pipe of the Y-shaped pipe is communicated with a second port of the three-way joint through a pipeline; an air inlet port of the temperature and humidity sensor is communicated with a third port of the three-way connector through a pipeline, an electric control sampling valve is arranged on the pipeline between the temperature and humidity sensor and the three-way connector, the electric control sampling valve and an air suction valve in the breathing machine are opened synchronously, and the opening time of the electric control sampling valve is shorter than that of the air suction valve in the breathing machine. According to the design, the temperature and humidity of breathing airflow obtained by a patient can be accurately regulated and controlled in the process of assisting respiratory therapy by using the breathing apparatus.

This invention discloses a nasal breathing device, comprising: a conduit component having an oxygen supply channel internally configured therein, the conduit component having two radially protruding air supply connectors, both of which are connected to the oxygen supply channel; oxygen hoses, the proximal ends of two oxygen hoses being connected to the two ends of the conduit component respectively, and the distal ends of the oxygen hoses being connected to an air source; nasal plugs, two nasal plugs being attached to the two air supply connectors respectively; the nasal plugs having sidewalls and bottom walls defining an air outlet and an air supply cavity, wherein after the nasal plugs are inserted into the nostrils, the air supply outlet faces the nostrils, the bottom wall faces away from the nostrils, and an attachment sleeve is configured on the bottom wall, the attachment sleeve being fitted onto the air supply connectors; an inhalation valve is configured at the junction area between the nasal plugs and the air supply connectors, the inhalation valve allowing gas in the oxygen supply channel to flow into the air cavity of the nasal plug while restricting gas in the air cavity from flowing back into the oxygen supply channel; an exhalation valve is configured on the bottom wall of the nasal plug, the exhalation valve allowing gas in the air cavity to flow to the outside while restricting outside gas from flowing into the air cavity.

The utility model discloses a breathing valve sealing technical field's a kind of sealing structure for breathing valve, including storage tank, and there is suction valve and exhaust valve on storage tank, and suction valve is connected with liquid seal device, and liquid seal device includes connecting pipe, liquid seal tank and suction pipe, and connecting pipe one end is communicated with suction valve, and other end is communicated with liquid seal tank, and suction pipe is installed in liquid seal tank, and suction pipe free end is equipped with sealing device;Sealing device includes sealing plate and fixed lid, and sealing plate is used to block suction pipe free end, and fixed to suction pipe by fixed lid, and still be equipped with oiling device and several exhaust device on sealing plate;When positive pressure appears in storage tank, and storage tank can be discharged via exhaust valve, but still part of storage tank gas is mixed with aldehyde, alcohol medium and flows out via suction valve, at this moment, liquid seal device can absorb the gas mixed with aldehyde, alcohol medium, so as not to make the gas mixed with aldehyde, alcohol medium volatilize to outside, cause on-site environment smell big.

The utility model discloses a coaxial breather valve disc opening height detection device which comprises a valve body installed in a storage tank or a pipeline, a matched valve cover is installed at the top of the valve body, an exhalation valve seat and an inspiration valve seat are installed in the valve body, and the valve cover is provided with a light hole and is sealed through a transparent sealing plate. The top of the transparent sealing plate is provided with a measuring device used for detecting the height of the valve disc. The air suction valve disc is provided with a disc hole corresponding to the light hole, and the disc hole is provided with a sealing plug. The transparent sealing plate and the laser ranging device are adopted to detect the opening height of the inhalation valve disc, meanwhile, the exhalation valve disc is provided with the disc hole and the sealing plug, and the sealing plug is hinged to the driving structure; when the opening height of the exhalation valve disc needs to be detected, only the sealing plug needs to be lifted and turned over through the driving structure, laser can penetrate through the disc hole to irradiate the exhalation valve disc, and then detection of the opening height of the exhalation valve disc is achieved.