59 results about "Tracheole" patented technology

The invention relates to a polyethylene ball valve air tightness detection device which comprises a detecting body connected with a driving device. The polyethylene ball valve air tightness detection device is characterized in that the detecting body is provided with two pushing bodies coaxially connected in series; the two pushing bodies are provided with pressure plates in extrusion fit; a sealing body capable of expanding along the radial direction is arranged between the two pressure plates; the two pressure plates and the sealing body constitute a sealing head matching an inner hole of a ball valve to be detected; the sealing head is internally provided with an inflatable channel; one end of the inflatable channel is communicated with an inflatable cylinder; and the inflatable channel is externally connected with a pressure gauge through an air pipe, and the air pipe is provided with an overvoltage protection mechanism. As the detecting body is internally provided with the inflatable cylinder, no external air source is needed. The pushing bodies seal the inner cavity of the valve body in the operation process to realize continuous, quick and automatic inflation, and the pressure value can be read directly from the pressure gauge and is clear at a glance. Water-free test is realized, which helps to protect the environment. The degree of automation is high. The test efficiency is improved. The reusability is high. The labor cost is reduced.

The invention discloses an initiative flame retarding device of a battery pack of a battery electric vehicle and belongs to the field of parts of electric vehicles. A flame retarding gas bottle is mounted in front of a battery pack shell body; the flame retarding gas bottle is connected with a gas inlet valve through a gas guide pipe; the gas inlet valve is communicated with the inner part of the battery pack shell body; an exhausting valve is located at the position, close to the top end, on the back surface of the battery pack shell body and is directly communicated with the inner part of the battery pack shell body; a temperature sensor and a smoke sensor, which are connected with a battery management system (BMS), can monitor whether the temperature of a battery in the battery pack is changed or not and whether smoke is generated or not in real time; the BMS can rapidly respond once if an abnormal signal is monitored; when the gas inlet valve and the exhausting valve are opened at the same time, carbon dioxide gas enters the battery pack; and meanwhile, combustion-supporting gas in the battery pack shell body is exhausted out of the pack in time so that the flame retarding aim is realized. The initiative flame retarding device has a very good flame retarding effect on the electric vehicle which is about to have thermal runaway or an initial combustion phase, and thus the safety of the battery pack and the whole vehicle is protected.

The invention discloses an active air feeding type dustproof mask which comprises a mask body and a binding band, wherein the mask body is communicated with an air purifying device through an air feeding pipe; the mask body is fixedly arranged on the head of a human body by the binding band; the mask body is of a hollow sandwich structure; the periphery part, which is in contact with the human body, of the inner surface of the mask body is flexibly arranged; the mask body is matched and sealed with a human face in shape from the aspect of anatomy; a middle part of the mask body is a rigid orifice plate which is protruded forwards; a breathing space communicated with the hollow sandwich through air is formed between the rigid orifice plate and the front side of a respiratory organ of a person in the anatomy; two ventilation holes which are respectively communicated with the outside and the air purifying device and are opposite to each other are formed in the hollow sandwich. By using the hollow sandwich structure arranged in the mask, purified air forms a clean air curtain at the front parts of the mouth and the nose of the person; the clean air curtain can provide clean air for the breathing of the person; meanwhile, the flowing air curtain stops external pollution from intruding, and the breathing pressure of the person after wearing the mask is also reduced.

The invention relates to a cleaning machine. The cleaning machine comprises a cleaning car body and a cleaning machine head; and the cleaning car body and the cleaning machine head are connected with each other. The cleaning machine is characterized in that an air blowing device and an air extracting device are arranged on or in the cleaning car body; the cleaning machine head is provided with an air blowing area and an air extracting area; the air blowing device and the air blowing area are connected by an air blowing pipe; the air extracting device and the air extracting area are connected by an air extracting pipe; and an air way formed by air blowing and an air way formed by air extraction are communicated with each other. The cleaning machine can suck away dust by blowing the dust from two sides to center, needs no water, and is high in automation efficiency; meanwhile, the cleaning machine makes no contact with a cleaned surface, so that the condition of surface wear cannot be generated; and in particular, when a photovoltaic cell panel is cleaned, the cleaning machine is excellent in effect.

The invention discloses a biogas slurry deamination and ammonia recovery method which comprises the following steps of starting a vacuum pump, and extracting the air in a deamination tower to a vacuum state, wherein the deamination tower is filled with a solid filler; spraying the biogas slurry in a biogas slurry bottle into the deamination tower through a spray head while absorbing the air into the deamination tower, wherein the ammonia gas in the biogas slurry goes out to be mixed with the air; inputting the air mixed with ammonia gas into an ammonia absorption bottle through an air pipe, wherein a sulfuric acid solution is contained in the ammonia absorption bottle, and the ammonia absorption bottle absorbs the ammonia gas in the air to obtain an ammonia sulfate solution to finish the ammonia recovery. The method disclosed by the invention can effectively recover ammonia gas in the biogas slurry, thereby increasing the economic benefits and avoiding the environmental pollution.

The invention provides a vehicle sealing assembly and method and a vehicle. The vehicle sealing assembly comprises a sealing strip and an air pump, wherein the sealing strip comprises a sealing stripclamping groove and a sealing strip foaming pipe which is arranged on a coaming of the vehicle through the sealing strip clamping groove; the air pump is communicated with the sealing strip foaming pipe through an air guide pipe and used for extracting air in the sealing strip foaming pipe when a vehicle door is in an open state and filling air into the sealing strip foaming pipe when the vehicledoor is in a close state. By means of the vehicle sealing assembly, compared with the prior art, the in-vehicle air pressure changes little in the vehicle door closing process, the situation that thein-vehicle pressure is quickly increased, so that the strength for closing the door is high can be avoided, the strength for closing the door can be effectively reduced, and meanwhile, vehicle sealingcan be achieved after the door is closed.

The invention discloses an emergency respiratory device for clinical use in an internal medicine department. The emergency respiratory device for the clinical use in the internal medicine department comprises a base, wherein an electric telescopic rod is arranged on the upper surface of the base, a worktable is arranged at the top end of the electric telescopic rod, a fixed basket is connected to the right lateral surface of the worktable, an oxygen tank is placed on the fixed basket, an air outlet pipe is arranged on the upper surface of the oxygen tank, and connected with a connecting hose I, an oxygen box is arranged on the upper surface of the worktable, an air inlet pipe is arranged on the right lateral surface of the oxygen box, and connected with the connecting hose I, a pressure sensor and a flow sensor are arranged on the lateral surface of an inner cavity of the oxygen box, and the emergency respiratory device for the clinical use in the internal medicine department disclosed by the invention has a reasonable structure, stronger practicability and lower manufacturing cost, uses universal wheels to be conveniently pushed in emergency to improve the rescue efficiency, and intelligently controls the oxygen therapy speed of a patient by using a PLC controller, and the height of the device is conveniently adjusted by using the electric telescopic rod, so that the emergency respiratory device for the clinical use in the internal medicine department is suitable for popularization and application.

The invention discloses an air leakage detection apparatus. The air leakage detection apparatus is used for detecting the air tightness of a filling bottle. The air leakage detection apparatus comprises a piston (1), wherein the piston (1) is provided with a plugging portion which can be clamped into the filling bottle and seals the filling bottle and a protruding portion (3) which is located outside the filling bottle. The air leakage detection apparatus is characterized in that an air pipe (4) which is connected with an air feeding device which can feed air quantitatively is arranged in the piston (1); the air pipe (4) includes a first gas outlet (6) which extends out from the plugging portion (2) and a second gas outlet (8) which extends out from the protruding portion (3); the second gas outlet (8) is sleeved with a balloon (10); the balloon (10) is covered with a detecting bottle (12); a contact switch is arranged at the inner wall of the test bottle (12); and after the balloon (10) contacts with the contact switch, passage signals can be emitted. With the air leakage detection apparatus of the invention adopted, problems in the prior art can be solved, and the sealing performance of the filling bottle can be effectively tested, and the filling bottle is not needed to be immersed in water, and therefore, a drying step can be omitted. The air leakage detection apparatus is suitable for production of industrial assembly lines.

The invention relates to a lithium ion battery and a manufacturing method thereof, wherein the lithium ion battery includes a sealed case; a battery cell is arranged in the case; an anode lug and a cathode lug both connected with the battery cell are arranged on the outer surface of the case; an air duct is also arranged in the case; a sealed hole is formed in the case; an opening at one end of the air duct is arranged inside the case; an opening at the other end of the air duct is communicated with the hole; and the sealed part of the hole can bear pressure smaller than that on other sealed parts on the case. When bigger pressure is generated by air inside the battery case, the sealed parts at the opening of the air duct can be opened more early than other parts on the case, so as to enable air to be exhausted from the air duct and improve the safety of the lithium ion battery; besides, during the manufacturing process of the lithium ion battery, the air duct can replace an air bag in the traditional scheme for vacuum pumping, thereby saving an plastic-aluminum film wasted by the air bag, and reducing the manufacturing cost of the lithium ion battery.

The invention discloses an impeller aerator with ozone sterilization function. The impeller aerator is characterized in that a floater (1) is connected with a support rod (2), a gear box (7) and an ozone generator (4) are arranged on the support rod (2), a suction chamber (10) is fixed below the gear box (7) through a fixing rod (9), a motor (6) is arranged above the gear box (7), an air outlet which is formed on the ozone generator (4) is connected with an air pipe (5), the air pipe (5) is connected with the interface of the suction chamber (10), an output shaft (8) of the gear box (7) is connected with an impeller shaft (11) through a flange, the impeller shaft (11) passes through the suction chamber (10), and an impeller (12) is arranged at the bottom of the impeller shaft (11). The impeller aerator with ozone sterilization function is sterilization and aeration equipment integrating ozone techniques and impeller aeration techniques, serves the functions of ozone generation, impeller aeration and ozone transfer, achieves the purposes of sterilization, disinfection, aeration and purification, and is advantageous in high efficiency and low energy consumption.

The invention discloses a carbon absorption tower. The key points of the invention are as follows: the tower is sequentially provided with the four parts of, from top to bottom, an ammonia purifying section, a carbon absorbing section, an ammonia absorbing section and a carbon absorbing liquid storage tank; the four parts are separated by three spacing boards; the top of a tower body is provided with a tail gas outlet, and the bottom of the tower body is provided with a carbon absorbing liquid outlet; the tower is a bamboo hat tower, the ammonia purifying section, the carbon absorbing section and the ammonia absorbing section are provided with a plurality of bamboo hats and a plurality of liquid overflow pipes, and the liquid overflow pipes are arranged at two sides of the tower body; each section is provided with a liquid inlet, a liquid outlet, a flue gas inlet pipe and an air inlet cap and an outlet thereof; water retainer rings of the carbon absorbing section and the ammonia absorbing section are arranged below a flue gas outlet; a defogging tray of the ammonia purifying section is arranged below the flue gas tail gas outlet; and a finished product from the ammonia absorbing section enters into the carbon absorbing liquid storage tank. The invention has the following advantages: the tower has integrated functions of dissolving and absorbing CO2 and demisting, which enables the process flow for carbon absorption to be simplified and small equipment investment and convenient operation to be obtained; the tower is capable of continuous operation, is stable and reliable and is a high efficiency carbon recovery apparatus, with the absorption rate of CO2 being more than 85%.

The invention relates to an adult simple breathing training balloon and a using method thereof. The training balloon comprises a one-way exhaust valve, a safety valve, a balloon main body and an air inlet valve, wherein the one-way exhaust valve is arranged at one end of the balloon main body, the safety valve is arranged between the one-way exhaust valve and the balloon main body, and the air inlet valve is arranged at the other end of the balloon main body, and the duckbill arranged on the one-way exhaust valve is directly connected with the tracheal cannula of a patient. The adult simple breathing training balloon is directly connected with the tracheal cannula of a patient, by pressing the balloon, the therapist or the nurse can perform the breathing training for the patient with clearconsciousness, and can directly carry out the lung breathing training for patients with unconsciousness by observing the breathing situation of the patient.

The invention relates to an end-tidal carbon dioxide trachea guide insertion device, which comprises a tube main body, an axial fiber on the inner wall of the tube main body, and an adjuster at the tail end of the tube main body, wherein a tail end interface is arranged in one end of the tube main body and is used for connecting an end-tidal carbon dioxide inductor and a front-end insertion opening is formed in the other end of the tube main body and is used for inserting into a trachea; and once end-tidal carbon dioxide is induced, the waveform of the end-tidal carbon dioxide can be displayed on a monitor. The end-tidal carbon dioxide trachea guide insertion device is not affected by the mouth opening of a patient and the head and neck activity, is not affected by the obesity level of the patient, is not affected by secretions and blood in an airway of the patient; and the waveform of the end-tidal carbon dioxide can be displayed on the monitor and a tracheal catheter can be guided to be implanted as long as the device reaches an aditus glottidis and enters a trachea.

A portable gas-producing pressurization device for transfusion comprises a gear box (4), an inner case (5), an outer case (17), a drug sac tape (9), shaft needles (18), internal and external gas-guiding tubes (10), and a buffer case (14). The gear box and a gear shaft (12) are connected in the apparatus. And the drug sac tape is linked to the gear shaft by a shaft slot. Cylindrical drug sacs (8) filled with drug granules (30) are distributed evenly on the drug sac tape. The internal gas-guiding tube is linked to the inner case in which proper amount of reaction medium (20) is loaded. Shaft needles are fixed onto a loop shaft (19) and needle shafts (6) are respectively provided with rotatory loop shafts. The internal gas-guiding tube (10) communicates with the buffer case and the external case communicates with the external gas-guiding tube (11). The apparatus completes transfusion by pressurization based on the chemical reaction principle of quantitative gas-producing, which is characterized by easy operation, small-sized apparatus and continuous transfusion, etc. The apparatus can be applied to oxygen uptake or experiment oxygen supply and to various transfusion demands in clinical treatment such as in field rescuing, transporting process and in preventing cross-infection in the prevalence of infectious diseases.

The invention discloses an activated carbon dosing system, which comprises a bulk activated carbon tank car, a dry gas storage tank, a stock bin, a gas storage tank, a water storage tank, a storage tank and a dosing device, wherein a dust remover is arranged on the top part of the stock bin; the bulk activated carbon tank car and the stock bin are connected through a cyclone separator; a spiral conveyor is arranged on the lower side of the stock bin; the dust remover is connected with the dry gas storage tank; an air outlet pipe is connected onto the gas storage tank, surrounds the periphery of the lower part of the stock bin, and supplies air in the stock bin for removing electron holes of the stock bin; the discharge end of the spiral conveyer is connected with the storage tank; the water storage tank is connected with the top part of the storage tank so as to supply water to the storage tank; the dosing device is connected with the side part of the storage tank through a liquid discharge pipe; a weighing system is arranged in the stock bin. The activated carbondosing system provided by the invention can be beneficial to improving the working efficiency and improving the safety, and is simple to operate, convenient to use, simple in structure and low in cost.

The invention provides a breathing mask capable of adjusting the air flow according to an oxygen uptake demand, and the breathing mask is assorted with an emergency rapid oxygen making device. The breathing mask mainly comprises structural components such as a mouth-and-nose mask (1), a short joint of an air guide pipe (2), an air conditioner (3), and a blood transfusion rubber hose (4). The mouth-and-nose mask and the air conditioner are mounted together; and the edge of the mouth-and-nose mask is wrapped by an annular bag-shaped mango structure made of silica gel, and is bent inwards to be arc-shaped. A conditioner for conditioning the inlet liquid, which is used by a transfusion tube in a structure similar to the air conditioner, structurally consists of a gear and an inclined rack. When the gear is propelled forwards by a thumb, a tube wall is tightly pressed by the outer edge of the gear, so that the air outlet amount is reduced by flatly pressing an elastic tube to deform, and the blood transfusion rubber hose, which discharges oxygen through the oxygen making device, is connected with the short joint of the air guide pipe through the air conditioner.

The invention discloses an air exhaust duct muffler used for a ship. The air exhaust duct muffler comprises a barrel body (4), the two ends of the barrel body (4) are provided with an air inlet end plate (3) and an air outlet end plate (7) respectively, the air inlet end plate (3) and the air outlet end plate (7) are provided with an air inlet pipe (2) and an air outlet pipe (8) respectively, an air inlet flange (1) is communicated with the barrel body (4) through the air inlet pipe (2), an air outlet flange (9) is communicated with the barrel body (4) through the air outlet pipe (8), the inside of the barrel body (4) is provided with a hush pipe (5) and a separating plate (6), the separating plate (6) separates the air inlet end of the barrel body (4) from the air outlet end of the barrel body (4) to form two cavities, the hush pipe (5) penetrates through the separating plate (6) and communicates the two cavities, and the circumferential wall of the hush pipe (5) is evenly provided with a plurality of circular holes. According to the spark extinguishing muffler, noise caused when tail gas of a diesel engine is exhausted can be effectively lowered.

The invention belongs to the technical field of auxiliary medical devices, and specifically relates to a noninvasive endotracheal cooling device applied to preservation of lungs from non-heart-beating donors. The device comprises two solenoid valves, a minitype membrane pump, two semiconductor refrigeration modules, a lung preserving fluid tank, a cooling water tank, a radiating coil tube, a fan, a water temperature controller and a water pump, and is divided into three systems, namely a low temperature aerating system, a low temperature lung preserving fluid supply system and a radiating system, wherein the low temperature aerating system carries out low temperature aeration in tracheae, the low temperature lung preserving fluid supply system supplies low temperature lung preserving fluid in the tracheae, and the radiating system carries out circulatory radiating on the two refrigeration modules. The noninvasive endotracheal cooling device can provide low temperature air with high flow capacity under the precondition of noninvasive operation, simultaneously feed high pressure low temperature lung preserving fluid into the tracheae, reduce the heat exchange coefficient, weaken unevenness of specific heat, quickly lower the temperature in the tracheae and the temperature of lungs, alleviate warm ischemia injury and improve the quality of donor lungs.

The invention relates to a copper pipe annealing system, and relates to the technical field of copper pipe machining equipment. The copper pipe annealing system comprises an annealing device, a nitrogen filling device which is arranged on a feeding side of the annealing device, a detection mechanism which is connected with the copper pipe and used for detecting the nitrogen filling state, and a driving part which is connected with the annealing device and drives the copper pipe penetrate through the nitrogen filling device and the annealing device, wherein the nitrogen filling device comprisesan air nozzle which is communicated with the copper pipe, an adjusting valve which is arranged on the air nozzle, an air conveying pipe which is communicated with the air nozzle, a nitrogen generatorwhich is communicated with the air conveying pipe and a sealing part which is connected with the air nozzle; and the detection mechanism comprises a detection part arranged at one end, far away fromthe nitrogen filling end, of the copper pipe. The copper pipe annealing system has the effects of detecting whether the copper pipe is full of nitrogen and accurately controlling the amount of nitrogen to improve the utilization rate of resources. The nitrogen overflows from the copper pipe and isolates oxygen outside a fire source, and then the flame is extinguished due to oxygen depletion, so that operators are reminded that nitrogen has filled the copper pipe and the waste of nitrogen is thus reduced.

The invention discloses an ultraviolet exhaust gas deodorizing device. The device comprises a base, the top of the base is fixedly connected with a fan and a processing box by bolts, the fan is located at one side of the processing box, an exhaust gas inlet tube is arranged on the outer wall of one side of the fan, a main gas tube is arranged between the fan and the processing box, branch gas tubes are arranged in the main gas tube, ultraviolet lamp holders are arranged on the inner wall of one side of the processing box, the inner wall of one side of every ultraviolet lamp holder is fixedly connected with ultraviolet lamps by bolts, and the outer wall of one side of the processing box is fixedly connected with a motor by bolts. The device can effectively remove adsorbed matters on the ultraviolet lamps to prevent the ultraviolet light shielding from affecting the exhaust gas deodorizing effect and ensure the normal running of the ultraviolet lamps, and the device avoids the problem ofthe influences of exhaust gas treatment stagnation caused by shutdown dismounting and cleaning of the ultraviolet lamps on the treatment efficiency in order to easily carry out long-term stable exhaust gas treatment.

The invention discloses a disposable wetting nasal oxygen cannula which consists of an air inlet 1, a wetting pipe 2, an air outlet 3, a wetting pipe bottom cover 7 and an air discharging pipe 12, wherein the air inlet 1 is located at the upper end of the wetting pipe 2; the air outlet 3 is located on the wetting pipe bottom cover 7; a solid wetting substance 6 is arranged in the wetting pipe 2; the disposable wetting nasal oxygen cannula further comprises an air guide pipe 4; the air guide pipe 4 is plugged into the wetting pipe 2 from the air inlet 1; and vent holes 5 are formed in the air guide pipe 4. According to the disposable wetting nasal oxygen cannula, the solid wetting substance replaces conventional wetting fluid, so that the size of a wetting device is reduced, and the wetting device is light in mass, convenient to operate, uniform in wetting of wet oxygen and long in duration, and can filter out pathogenic microorganisms and avoid cross contamination; and the disposable wetting nasal oxygen cannula is required to be used within a set time limit to guarantee the wetting effect.

The invention is suitable for a novel anti-fog and miniature air purifying helmet. The concentration of harmful substances in air is detected through a PM2.5 detector (3), when the harmful concentration is reached, a miniature air purifier (9) in the helmet starts to operate, contaminated air is filtered through an activated carbon filter screen (8) through the acceleration of an external fan (1)and flows in the miniature air purifier (9) and flows through a nanoscale titanium dioxide photocatalysis net (10) and a medical-scale HEPA filter screen (11) to become clean air, anions are added tothe air through an anion generator, the clean air flows into the anti-fog helmet through vent holes, a clean air storage chamber (13) and a clean air supply pipe (14) and is then spread around, and the air environment around the user is improved. Through the nanometer catalysis technology, people can see a road in front clearly in fog, and the driving safety is improved.

The invention discloses a convenience-type vital capacity training device for the respiratory medicine department. The convenience-type vital capacity training device comprises a glass shell and a shell; two scales are arranged on the front of the inner wall of the glass shell, and located at the upper and lower sides of the front of the inner wall of the glass shell respectively, and the lower surface of the glass shell is fixedly connected with the upper surface of a baseboard; a first pipe sleeve is clamped to the left side face of the glass shell, a first gas delivery pipe is sleeved withthe first pipe sleeve, and a second pipe sleeve sleeves the outer surface of the first gas delivery pipe and is clamped to the right side face of the glass shell. By means of the convenience-type vital capacity training device for the respiratory medicine department, through the cooperation of a blowtorch, a rubber sleeve, the first gas delivery pipe, a second gas delivery pipe, the scales, an airvalve, an air ejector pipe and piston balls, people can undertake simple lung training simply by blowing air via the blowtorch, the situation that people cannot be exercised due to the factors of sites is avoided, and convenience is brought for people to undertake lung training.

The invention discloses an electric pollinator using air flow to calculate the pollination amount, and aims to solve the problem that the pollen-ejection air flow and supplied pollen amount cannot beproportionally arranged and the pollination amount cannot be effectively metered. The air control part of the electric pollinator can maintain a stable ejection pressure and mainly comprises an air pressure sensor (1), a wedge valve (13), an air pump (14), and an airbag (16). The pollen metering part of the electric pollinator can mix pollen and air flow according to a determined ratio based on the pollen-ejection air flow and mainly comprises a pollen leaking tank (4), an impeller (6), a hairbrush (9), a gear (10), and a pollen supply opening (18). The pollen spraying time can be controlled by a press switch (12). The electric pollinator has the advantages that the pollen amount can be effectively metered by the ejection air flow, the pollen concentration of pollination air flow is maintained during the ejection process, a reasonable air pressure is maintained in an air pipe (17); and the responding speed of the press switch (12) to the ejection air flow during the start / close processis improved.

The invention relates to an oxygen inhalation and humidification mixing device used for trachea cannula and tracheotomy. The oxygen inhalation and humidification mixing device comprises an oxygen bottle (1), a humidification saline bottle (2), an oxygen pipe (3), a humidification saline pipe (4), a speed controller (5) and a filter (11), and is characterized in that the device is provided with a plug pipe (6), a pipe joint (7) is arranged on the plug pipe (6), is communicated with the plug pipe (6), and is used for connecting the oxygen pipe (3) with the humidification saline pipe (4), one end of the plug pipe (6) is provided with an end cover (8), and an end cover core (9) of the end cover (8) is made of a bacteria filtering net. The oxygen inhalation and humidification mixing device is less in consuming materials, less in standby matters, low in article replacing rate, convenient to use, easy to fix, high in safety and high in easy controllability; transient oxygen supply pause in the operation process is avoided; patients needing aspiration of sputum can be subjected to oxygen inhale in the process of aspiration of sputum, so that transient oxygen deficit of the patients caused by aspiration of sputum is reduced.

The invention discloses a remote-delivery bladeless ventilating system used in the gunpowder and explosive field. By the adoption of the remote-delivery bladeless ventilating system used in the gunpowder and explosive field, the problem that explosion risks are caused easily in an existing ventilating system due to friction and collision between gunpowder and explosive dust or gunpowder and explosive particles at a rotary bearing and an impeller in the gunpowder and explosive field is solved. The remote-delivery bladeless ventilating system comprises an air source (1), an air storage tank (2), an air pipe (3), a one-way valve (4), a throttling valve (5) and a ventilating frame (6). The air source (1), the air storage tank (2), the one-way valve (4), the throttling valve (5) and the ventilating frame (6) are connected in sequence through the air pipe (3). The air source (1) and the air storage tank (2) are installed in safe places in a gunpowder-free and explosive-free environment. The ventilating frame (6) is installed in a dangerous place in a gunpowder and explosive environment. The remote-delivery bladeless ventilating system is simple in structure and low in energy consumption, and friction and collision between the gunpowder and explosive powder or particles and movement components in the ventilating system in the dangerous place in the gunpowder and explosive field can be avoided.

The invention discloses an indwelling oxygen supply atomization sputum-aspirating tube capable of lightening the labor intensity of a medical staff, relieving the pain of a patient and saving the cost expense of a disposable sputum-aspirating tube. The indwelling oxygen supply atomization sputum-aspirating tube is provided with a sputum-aspirating tube body (1), the rear end of the sputum-aspirating tube body (1) is provided with a negative pressure joint (2), and the front end of the sputum-aspirating tube body (1) is provided with a sputum liquid inlet (3). The indwelling oxygen supply atomization sputum-aspirating tube is characterized in that an air supply pipe (4) and a liquid supply pipe (5) are fixed on one side wall of the sputum-aspirating tube body (1), an air supply joint (6) is connected with the rear end of the air supply pipe (4), the rear end of the liquid supply pipe (5) is connected with a liquid supply joint (7), a circular pipe (8) which is arranged at the rear side of the sputum liquid inlet (3) is sleeved on the sputum-aspirating tube body (1), a plurality of atomized millipores (9) are arranged on the circular pipe (8), and the front ends of the air supply pipe (4) and the liquid supply pipe (5) are both arranged in the circular pipe (8).

The invention discloses a pressure-difference-stable ventilation catheter and a connecting device, and belongs to the field of medical instruments, the pressure-difference-stable ventilation catheter comprises a ventilation catheter body of which the front section is provided with a sealing air bag, a pressure-difference-stable cavity is communicated with the sealing air bag, and a communicating pipe is communicated with the pressure-difference-stable cavity and is communicated with a breathing loop; during mechanical ventilation, the pressure intensity of gas in the breathing circuit is automatically adjusted through the pressure difference stabilizing cavity, so that the pressure intensity of the gas in the sealing air bag is larger than that of the gas in the breathing circuit, and the pressure intensity difference value is stabilized at a proper numerical value; the pressure intensity of the sealed air bag of the ventilation catheter synchronously and dynamically changes along with the pressure intensity of the mechanical ventilation airway, in the expiration phase with the small pressure intensity of the mechanical ventilation airway, the pressure intensity of air in the sealed air bag is small, blood circulation of the tracheal mucosa is recovered, and the tracheal mucosa is prevented from being damaged.

The invention discloses a flux generator, which comprises a body. The upper end of the body is vertically provided with a flange cover, one side of the upper end of the flange cover is provided with a gas intake pipe, the other side of the upper end of the flange cover is provided with a gas discharging pipe, the top end of the flange cover is provided with a valve, the gas intake pipe and the gas discharging pipe are respectively provided with a valve, the lower end of the body is connected with a hollow flange base, and the hollow flange base is connected with a chassis through a screw. The invention has the advantages that the flux generator has a simple structure, the cleaning can be facilitated, the service life can be prolonged, and the flux quality can be improved.

The invention discloses a hydrogen generator, and particularly relates to a laboratory device. The hydrogen generator comprises a solution storage tank used for storing an electrolyte solution, an electrolytic device, a first connecting pipe and a water removal device for removing water vapor entrained in hydrogen; the electrolytic device comprises a hollow shell, a hydrogen outlet pipe arranged on a negative pole in a sleeving mode, and an oxygen outlet pipe arranged on a positive pole in a sleeving mode; the oxygen outlet pipe communicates with one end of the first connecting pipe, the solution storage tank communicates with the end, deviating from the oxygen outlet pipe, of the first connecting pipe; the solution storage tank is provided with an oxygen exhausting pipe for exhausting oxygen; the first connecting pipe is provided with a pressure opening and closing valve which is opened along with decreasing of the oxygen pressure; and an oxygen injecting groove for allowing the oxygen to be injected into the solution storage tank is formed in the inner side wall of the first connecting pipe. When the hydrogen generator works, the advantage of automatic addition of the electrolytesolution can be achieved if the amount of the internal electrolyte solution is insufficient.