114 results about "Oxygen pressure" patented technology

The invention discloses an oxygen supply pressure dynamic adjusting method and system based on a medical cabin, and relates to the technical field of medical equipment and medical information.The method comprises the steps that the real-time oxygen supply pressure of the medical cabin and physiological data of a patient are collected; predicting pressure disturbance of an oxygen supply network through a graph neural network, and identifying a risk medical cabin; monitoring oxygen pressure mutation at an inlet of an oxygen supply pipeline, and identifying an interfered medical cabin; based on the real-time physiological data of the patient, generating a dynamic physiological baseline through parameter empirical Bayesian calibration; calculating a comprehensive deviation index of the physiological data and the baseline through sliding window integration, and determining a compensation control vector; generating a compensation instruction set by combining the abrupt change of oxygen pressure and the compensation control vector; the executed physiological parameters and oxygen supply pressure data are fed back to the medical health big data platform, and closed-loop adjustment is achieved. The problems that an existing medical cabin oxygen supply system is insufficient in accuracy, weak in anti-interference capacity, difficult in personalized adjustment and the like due to control lag, passive response and static reference setting are effectively solved.

The invention relates to the technical field of oxygen monitoring, in particular to an oxygen remaining amount monitoring system for an oxygen bottle. The system comprises a digital monitoring module, a real-time feedback early warning module, a gas purity monitoring module, an intelligent gas supplementing module and an integrated control unit, wherein the digital monitoring module is used for collecting pressure and flow data in real time and converting the pressure and flow data into digital signals; the real-time feedback early warning module is used for transmitting the acquired digital signal to the microcontroller and carrying out graded early warning by calculating the residual amount of the oxygen steel cylinder and the sustainable use time; the gas purity monitoring module is used for monitoring oxygen humidity and oxygen pressure in real time to evaluate oxygen purity so as to obtain the remaining purity of an oxygen bottle; the intelligent gas supplementing module is used for automatically controlling the oxygen steel cylinder to carry out gas supplementing operation; and the integrated control unit is used for integrating functions of all the modules and performing data display through a human-computer interaction interface. The residual amount and sustainable use time of the oxygen steel cylinder can be monitored in real time.

The utility model relates to the technical field of converter steelmaking, and discloses an oxygen lance nozzle for a 120-ton vanadium extraction converter and the vanadium extraction converter. The oxygen lance nozzle comprises a lance body, wherein a cavity is formed in the lance body; the spraying hole is in a Venturi tube shape, is formed in the front portion of the gun body and is used for spraying oxygen, and the narrow portion in the middle of the spraying hole is a throat portion. The oxygen lance nozzle increases the oxygen flow, so that the pure oxygen blowing time is shortened under the same oxygen pressure, the smelting time of a vanadium extraction converter is shortened, and the production efficiency of the vanadium extraction converter is improved.

An oxygen supply pipeline for an oxygen pressure regulator, relating to the technical field of pressure reducing devices, includes a connecting cap, a connector, an oxygen supply hose, and an anti-disconnection device. The anti-disconnection device comprises a quick-connect socket, a locking plate, and a locking spring. The locking plate and locking spring cooperate to achieve automatic locking, preventing oxygen supply interruption. The connecting cap communicates with the low-pressure chamber of the oxygen pressure regulator via a safety valve. The safety valve includes an output housing, a valve core, a pressure adjusting screw, and a pressure adjusting spring, ensuring normal oxygen delivery and preventing safety accidents caused by excessive pressure. This utility model's oxygen supply pipeline has a simple structure, is easy to assemble, has low production costs, and can effectively improve the continuity, stability, and safety of oxygen supply, meeting the oxygen supply needs of different scenarios.

The invention relates to a mechanical oxygen supply flow indicator for an aviation oxygen mask, which comprises a sleeve tube partially or completely made of transparent materials, an oxygen inlet tube is arranged on one side of the sleeve tube, an oxygen outlet tube is arranged on the other side of the sleeve tube, the sleeve tube is provided with an inner cavity, a flow indicating block is arranged on one side, close to the oxygen inlet tube, in the inner cavity, and an adjusting device is arranged on one side, close to the oxygen outlet tube, in the inner cavity. A spring is arranged between the flow indicating block and the adjusting device; the flow indicating block can slide along the inner cavity of the sleeve pipe, during working, oxygen enters the inner cavity from the oxygen inlet pipe, then passes through the gap between the side face of the flow indicating block and the wall of the inner cavity of the sleeve pipe, flows through the adjusting device and then flows out of the oxygen outlet pipe, and a user judges the oxygen pressure and the airflow condition during oxygen supply by observing the position of the flow indicating block in the inner cylinder. The device adopts a pure mechanical structure, is simple and reliable, convenient to assemble and connect, small in size, light in weight, convenient to maintain and repair, visual in flow display and particularly suitable for being used on a mask oxygen supply pipeline.

The invention relates to a device for safely actuating a gaseous oxygen supply container in an aircraft for dispensing oxygen to a user, the container (1) being intended to store pressurized oxygen at a first oxygen pressure and having an opening (2) sealed by a seal (9). The apparatus comprises: a manifold (4) connected in fluid communication with the seal (9) and configured to receive a flow of oxygen from the opening (2) when the seal (9) is pierced, the manifold (4) comprising an oxygen flow circuit (11), an oxygen flow circuit connected in fluid communication with the seal (10) and having an outlet (14) at a second oxygen pressure lower than the first pressure and a pressure reducer (13) having means (12, 15, 16) for regulating the oxygen pressure between the opening (2) and the outlet (14) during flow; and an actuator (7) located in the opening (2), the actuator being configured to pierce the seal (9) when triggered to allow oxygen to flow from the container (1) through the opening (2) to the outlet (14), the oxygen flow circuit (11) comprising a calibration aperture (17) provided at the outlet (14), the calibration aperture is configured to prevent any accumulation of oxygen at a third pressure between the first pressure and the second pressure without triggering the actuator (7) in the event that oxygen flows to the outlet (14).

The invention provides an oxygen pressure leaching system and method, and relates to the technical field of nickel hydrometallurgy, the oxygen pressure leaching system comprises a reaction device and a solid-liquid separation device, the discharging end of the reaction device is communicated with the feeding end of the solid-liquid separation device, the liquid discharging end of the solid-liquid separation device is communicated with the reaction device, and the liquid discharging end of the solid-liquid separation device is communicated with the reaction device. The interior of the reaction device is cooled. According to the oxygen pressure leaching system provided by the invention, the risk that steam hammers occur in the coil pipe to threaten safety production and burn the titanium coil pipe can be eliminated, and the nickel leaching rate cannot be influenced.

The invention belongs to the technical field of high-pressure gas safety testing, and particularly relates to an integrated control device for an anti-ignition test of an oxygen pressure reducer. Comprising a first pneumatic valve, a preheating device, a steel seamless gas cylinder, a temperature sensor, a temperature controller, a digital pressure gauge, a second pneumatic valve, a pressure transmitter, a pressure gauge, an oxygen filling port, a connector, an EX electric valve and a computer, the steel seamless gas cylinder is arranged in the preheating device, and the temperature controller is placed in the preheating device; one end of the first pneumatic valve is a gas inlet end, and the other end of the first pneumatic valve is communicated with the input end of the steel seamless gas cylinder; the output end of the steel seamless gas cylinder is connected with one end of a second pneumatic valve, and the other end of the second pneumatic valve is connected with an oxygenating port of the tested piece; the joint of the tested piece is connected with the EX electric valve; and the first pneumatic valve, the second pneumatic valve, the digital pressure gauge, the pressure transmitter, the EX electric valve, the temperature sensor and the temperature controller are connected with a computer.

The utility model relates to an arsenic sulfide slag treatment system which comprises an oxygen pressure leaching unit, a first solid-liquid separation unit, a first reaction unit, a second solid-liquid separation unit, a second reaction unit and a third solid-liquid separation unit which are communicated in sequence, a discharge hole of the third solid-liquid separation unit is communicated with the first reaction unit. According to the treatment system disclosed by the utility model, the arsenic sulfide slag can be treated in a more efficient and energy-saving manner, and harmless and resourceful treatment of the arsenic sulfide slag is realized.

The utility model relates to a pressure reducing valve device with a waterproof function, which comprises a valve body, an oxygen bottle connector is arranged at the opening end of the valve body, a connecting part is arranged between the oxygen bottle connector and the valve body, and the valve body and the oxygen bottle connector are fixedly connected through the connecting part. When the pressure of oxygen in an external oxygen bottle is reduced, the pressure in the oxygen bottle connector is reduced, at the moment, the spring pushes the valve element to move towards the oxygen bottle connector, the bottom end of the air hole is driven to move synchronously, and when the bottom end of the air hole moves to be communicated with the alarm pipeline, the water-proof sealing structure is closed. Therefore, gas can be discharged into the alarm pipeline through the air hole, penetrates through the one-way valve and then is discharged from the bottom end of the alarm pipeline, bubbles are formed underwater, a user is reminded of insufficient oxygen pressure, and the problem that the underwater welding quality can be seriously affected due to the fact that the oxygen pressure is insufficient and a welding rod cannot be fully combusted is avoided as much as possible.

The utility model provides a temperature control system and an oxygen pressure leaching device, and relates to the field of hydrometallurgy. The temperature control system comprises a heat exchange piece, a first pipeline assembly and a second pipeline assembly. The heat exchange piece is arranged in the reaction kettle, the heat exchange piece is provided with a heat exchange cavity, and the first pipeline assembly and the second pipeline assembly are both communicated with the heat exchange cavity; the first pipeline assembly comprises a first pipeline and a second pipeline which are connected in parallel, the first pipeline is used for bearing a cooling medium, and the second pipeline is used for bearing a heating medium; the first pipeline, the heat exchange chamber and the second pipeline assembly form a first flowing path; the second pipeline, the heat exchange cavity and the second pipeline assembly form a second flowing path. The temperature control system provided by the utility model solves the technical problems of high cost and high manufacturing difficulty of a reaction kettle temperature control method in the prior art.

The purpose of this invention is to propose an oxygen depressurization explosion-proof electrostatic vacuum noise silencing device, belonging to the field of safe handling of flammable and explosive industrial gases. The device includes a vertical cylindrical body, a bottom air inlet, a top exhaust outlet, supporting legs, and inside the cylinder, a bottom flame arrester, a multi-stage pressure reduction and deceleration assembly, an electrostatic elimination sound-absorbing layer, and a top flame arrester. Through multi-stage U-shaped microporous baffles, progressive pressure reduction and deceleration are achieved; the metal wire sound-absorbing layer eliminates static electricity and absorbs noise; and the upper and lower double-layer flame arresters block the backfire path, completely solving the problems of electrostatic explosion, backfire, and noise pollution during oxygen depressurization. This invention is suitable for high-risk scenarios such as liquid oxygen stations, ensuring the safe production of flammable and explosive chemical facilities, avoiding personal injury and property damage, while meeting environmental protection and noise reduction requirements.

The invention relates to a positive pressure oxygen respirator protection state and combat radius emergency early warning method, and belongs to the technical field of emergency rescue, and the method comprises the following steps: collecting the residual oxygen pressure of a respirator; collecting the movement distance of the personnel; acquiring the fastest movement speed and average movement speed of the personnel; the collected data is utilized to realize respirator residual protection time risk early warning, personnel return safety place risk early warning, personnel combat radius early warning and respirator airtightness early warning; and giving an emergency command decision based on each early warning result.

The invention discloses a method and a system for controlling the pressure difference between hydrogen and oxygen in balanced water electrolysis hydrogen production. The pressure difference control on the two sides of hydrogen and oxygen is realized through the multi-stage progressive pressure regulating module, and the pressure on the hydrogen side is always higher than a preset first threshold value of the pressure on the oxygen side through the back pressure regulating module; under the basic pressure environment provided by the back pressure adjusting module, the pressure difference of the two sides of hydrogen and oxygen is monitored in real time, and when the pressure difference exceeds the target fluctuation range, the hydrogen and oxygen pressure difference is corrected to the target fluctuation range through the basic function differential pressure correction module; if the hydrogen-oxygen pressure difference is not recovered to the target fluctuation range after being corrected by the basic function differential pressure correction module, or the hydrogen-oxygen pressure difference directly exceeds a safety set value, the hydrogen-oxygen pressure difference is further corrected through the safety function differential pressure correction module; and if the safety function differential pressure correction module is ineffective in correction and the pressure on any side of hydrogen and oxygen reaches a physical protection set value, the physical protection module is started to execute physical pressure relief operation, so that the problem of differential pressure control caused by pressure fluctuation of the balanced electrolytic cell is solved.

The utility model discloses an oxygen pressure detector, which relates to the technical field of oxygen pressure detection and comprises a detector shell provided with a display module for detecting and displaying oxygen pressure. The lower end of the instrument shell is provided with a rotary connecting block used for enabling a pressure sensor in the oxygen pressure detector to make contact with oxygen, and the front end of the instrument shell is provided with a protective cover used for protecting the display module. According to the oxygen pressure detector, the rotating connecting block is arranged on the detector shell, the detector shell is connected to the oxygen conveying pipeline through the rotating connecting block, and after the oxygen pressure detector is fixed, the orientation of the detector display panel can be conveniently adjusted.

The utility model provides a pressure gauge calibrating device oil-forbidden pressure gauge calibrating oil-water isolation device which comprises a device body, a partition plate is arranged in the center of the interior of the device body, a through hole is formed in the lower portion of the surface of the partition plate, a drain outlet plug is arranged on the left side of the top of the device body, and the drain outlet plug is arranged on the right side of the top of the device body. An oxygen oil prohibition meter connector is arranged on the top of the device body and located on the right side of the drain outlet plug, the detection device is installed on the left side of the bottom of the device body, and one end of the detection device connector is connected with a pressurization oil return pipe. The oil-water isolation device for the oil-forbidden pressure gauge verification of the pressure gauge verification device solves the problem that the spring rubber sealing plate of a crude oil-water isolation device is aged and fractured to leak oil and enter an oxygen pressure gauge to cause oil contamination, is high in safety performance and reliability, reduces frequent replacement of the elastic rubber sealing plate, and reduces the cost. And oil contamination explosion accidents in the use process of the oxygen pressure gauge are prevented.

The present invention provides an efficient filter oxygenator, which comprises a housing and an oxygenation variable-temperature module. A blood inlet, a water inlet, and a water outlet are formed in the bottom of the housing, an air outlet and a blood outlet are formed in the lower part of the housing, and an air inlet and an exhaust opening are formed in the upper part of the housing. The oxygenation variable-temperature module is vertically arranged in the housing. The oxygenation variable-temperature module sequentially comprises a drainage assembly, a variable-temperature film, a first filter screen, an oxygen pressure film, and a second filter screen from inside to outside. The variable-temperature film is in communication with the water inlet and the water outlet. The oxygen pressure film is in communication with the air inlet and the air outlet. A blood inlet end of the drainage assembly is in communication with the blood inlet, and a blood outlet end thereof is located at the upper part of the variable-temperature film. The hole diameter of the second filter screen is smaller than that of the first filter screen. Blood reaches the upper part of the variable-temperature film from the blood inlet through the drainage assembly, is diffused to the periphery by taking the drainage assembly as the center, obliquely penetrates through the variable-temperature film, the first filter screen, the oxygen pressure film, and the second filter screen from top to bottom, and then flows out from the blood outlet. The present invention achieves a good filtering effect without increasing excessive pressure drop and blood priming volume.

This invention discloses an oxygen pressure leaching method and apparatus. The oxygen pressure leaching method includes at least one stage of oxygen pressure leaching process. This stage includes grinding underflow pretreatment, a first-stage oxygen pressure leaching treatment, a first-stage slurry heat exchange and depressurization, a first-stage slurry gas separation, and a first-stage slurry separation to obtain a first-stage concentrated supernatant and a first-stage concentrated underflow. Compared to existing processes, the method of this invention can effectively reduce oxygen and steam consumption. Using a single-stage oxygen pressure leaching process can reduce steam consumption by 70-100%, and using a two-stage oxygen pressure leaching process can reduce oxygen consumption by 27.5-36% and steam consumption by 58-100%.

The utility model provides a nasal oxygen cannula, which relates to the technical field of medical instruments, and comprises a cylindrical catheter main body, the central part of the catheter main body extends to the inside and is provided with a cake-shaped isolation sheet, and the periphery of the catheter main body is provided with a cylindrical ventilation catheter which is communicated with the catheter main body and is close to the right side of the back surface. A pressure measuring catheter communicated with the catheter main body is arranged at the position, close to the left side of the back face, of the periphery of the catheter main body and corresponds to the ventilation catheter, and then a pressure sensor with the round periphery is arranged at the position, close to the back face, of the interior of the pressure measuring catheter. And a green medical worker can effectively and conveniently adjust the oxygen pressure value, so that the comfort degree of a patient is guaranteed.

The utility model provides a pressurized oxygen immersion oxygen partial pressure on-line detection device which comprises an autoclave, a thermocouple is arranged on the autoclave, a plurality of partition plates are arranged in the autoclave, the autoclave is divided into a plurality of reaction compartments by the partition plates, an oxygen main pipe is arranged below the autoclave and connected with a plurality of oxygen branch pipes, and the oxygen branch pipes are communicated with the reaction compartments. The oxygen branch pipes penetrate into the corresponding reaction compartments from the bottom of the autoclave, the oxygen main pipe is provided with an oxygen pressure transmitter, the thermocouple is connected with a controller, and the controller is respectively connected with the oxygen pressure transmitter and the oxygen regulating valve. According to the utility model, the thermocouple is arranged at the corresponding position of the autoclave, the saturated vapor pressure in the autoclave is obtained by detecting the temperature of the vapor phase in the autoclave, and the saturated vapor pressure is compared with the oxygen pressure in the oxygen branch pipe to obtain the accurate oxygen partial pressure in the autoclave under the temperature condition; meanwhile, an existing operator can directly observe through the display screen, and the use mode is convenient and fast.

The invention discloses a device for improving the use efficiency of a mechanical seal of an oxygen pressure ammonia leaching molybdenum and rhenium extraction reaction kettle, which comprises a collection frame and a water tank mounted on the top surface of the collection frame and used for temporarily storing pure water, a reaction kettle assembly for oxygen pressure ammonia leaching molybdenum and rhenium extraction is mounted on the collection frame, and a stainless steel distributor is mounted on the top surface of the collection frame. A pumping assembly used for adjusting the outlet pressure along with the change of the pressure in the reaction kettle assembly is connected between the water inlet of the stainless steel distributor and the water outlet of the water tank, a balance tank is further installed on the collection frame, and the reaction kettle assembly comprises a kettle body installed with the collection frame in a combined mode. No mixed gas, no other mixture and pure water exist in the gap between the mechanical seal movable ring and the mechanical seal movable ring, crystals cannot be generated in the gap between the mechanical seal movable ring and the mechanical seal movable ring after shutdown, and the phenomenon that the mechanical seal movable ring and the mechanical seal movable ring are adhered is avoided, so that the phenomenon that the mechanical seal movable ring and the mechanical seal movable ring are damaged during secondary starting is avoided. And the mechanical seal moving and static rings are damaged due to adhesion of the mechanical seal moving and static rings.

The utility model discloses an upper inlet type valve group of an oxygen pressure leaching autoclave. The upper inlet type valve group comprises an oxygen pressure leaching autoclave, a tee joint, a first oxygen special valve, an oxygen pneumatic control valve, a second oxygen special valve, an oxygen flow meter, an oxygen pneumatic cut-off valve, a nitrogen manual valve, a check valve, an oxygen special pipe, a communicating pipe, a nitrogen pipe and a kettle inlet pipe, the oxygen pressure leaching kettle is a horizontal titanium-lined kettle or a lead-lined and brick-lined kettle; the oxygen inlet is positioned on the upper side surface of the autoclave; the special oxygen pipe is connected with an outer net oxygen main pipe, enters the autoclave and extends to the position under the stirrer; an oxygen flow meter, a second oxygen special valve, an oxygen pneumatic control valve, a first oxygen special valve and a check valve are sequentially arranged; the nitrogen pipe is connected with an outer net nitrogen header pipe and is in a closed state during oxygen introduction production through a nitrogen manual valve switch; the tee joint is connected with a special oxygen pipe; the communicating pipe is connected with the special oxygen pipe and the nitrogen pipe, is provided with the oxygen pneumatic cut-off valve and is in a closed state during oxygen production.

The utility model relates to an air separation system normal pressure oxygen pressure and flow accurate control device which aims at solving the technical problem that glass is arranged at the position of a pointer of an existing pressure gauge and the glass is prone to being impacted and damaged, the air separation system normal pressure oxygen pressure and flow accurate control device comprises a flow valve, a controller body is fixedly arranged at the front end of the flow valve, and a pressure measurer is arranged on one side of the controller body. A pressure gauge and a gauge cover are further included; the pressure gauge is arranged on the pressure measurer; the gauge cover is arranged at the glass at the front end of the pressure gauge; the bottom of the gauge cover is rotationally connected with the bottom of the front end of the pressure gauge through a rotating structure; the rotating structure comprises a connecting block; the two connecting blocks are fixedly arranged at the bottom of the gauge cover and the bottom of the front end of the pressure gauge respectively; the two connecting blocks are connected through a rotating shaft; the pressure gauge has the advantages that the glass position of the pressure gauge is covered with the gauge cover for protection, the gauge cover can be opened in a rotating mode, and operation is convenient.

The oxygen dissolving and increasing system comprises a premixer and a control box, the water inlet end of the premixer is sequentially communicated with a variable frequency water pump and a first pipe body used for being communicated with a culture water body, and the air inlet end of the premixer is sequentially communicated with an oxygen pressure regulating box and an oxygen generating device. The outlet end of the premixer is sequentially communicated with a premixing tank, a first valve and a second pipe body used for being communicated with an aquaculture water body; a flow sensor and an electromagnetic valve are arranged in the oxygen pressure regulating box, a controller is arranged in the control box, and the controller is electrically connected with the variable frequency water pump, the flow sensor and the electromagnetic valve. According to the utility model, the variable frequency water pump can supply water in the aquaculture water body to the premixer, and oxygen generated by the oxygen generating device can be supplied to the premixer through the oxygen pressure regulating box, so that the oxygen and the water are mixed and dissolved for the first time in the premixer and then mixed and dissolved again in the premixing tank, and the oxygen can be fully dissolved in the water.

This invention discloses a method, device, system, and storage medium for predicting the thermo-oxidative aging performance of polyamide, including: acquiring experimental data of polyamide thermo-oxidative aging under various coupled conditions such as oxygen pressure, temperature, and sample thickness, and the corresponding tensile strength retention rate; constructing a modified response prediction closed-form formula based on the diffusion-reaction synergistic mechanism and introducing it as a soft physics constraint into the model; employing a multi-objective joint training strategy to simultaneously minimize data fitting error and physical equation residuals; evaluating and visualizing the performance of the trained model, solving for and outputting the model parameters. Using the technical solution of this invention, PINN driven by the reaction-diffusion synergistic closed-form formula is used to predict the thermo-oxidative aging performance of polyamide under multiple coupled conditions.

A multilayer shrink film having at least two barrier layers. The barrier layers including ethylene-vinyl alcohol copolymer with an ethylene content of between 27-50 mol %. The multilayer shrink film having a free shrink of at least 60% at 85° C. measured in accordance with ASTM D2732. The multilayer shrink film having an oxygen transmission rate of no more than: 20 cubic centimeters (at standard temperature and pressure) per square meter per day per 1 atmosphere of oxygen pressure differential measured at 0% relative humidity and 23° C. measured according to ASTM D-3985. The multilayer shrink film having a haze after shrink of less than 50% measured in accordance with ASTM D 1003.

An oxygen pressure relief and ventilation system includes a flow fuse fluidly coupled downstream of a pressure regulator. The pressure regulator is operatively coupled to an oxygen tank, and the oxygen tank is located in an unpressurized compartment of an aircraft. A pressure relief valve is fluidly coupled downstream of the flow fuse. A ventilation pathway fluidly couples the unpressurized compartment with a pressurized compartment. The flow fuse and the pressure relief valve are configured to cooperatively mitigate downstream flow of pressurized oxygen if the pressure regulator fails. The ventilation pathway is configured to allow air from the pressurized compartment to pass through to the unpressurized compartment for diluting a concentrated oxygen in the unpressurized compartment.

The utility model discloses an oxygen pressure equalizing distribution device of a molecular sieve oxygenerator, which relates to the technical field of molecular sieve oxygenerators, and comprises an air inlet mechanism, the air inlet mechanism comprises an air inlet cover, the inner wall of the air inlet cover is fixedly connected with an inner flow guide cover, the inner flow guide cover is trumpet-shaped, the inner wall of the inner flow guide cover is fixedly connected with a low-pressure cone, and the low-pressure cone is fixedly connected with the air inlet cover. The position, close to the bottom end, of the inner wall of the inner flow guide cover is fixedly connected with a flow dividing skirt, the low-pressure cone is sleeved with the flow dividing skirt, and the position, close to the bottom end, of the inner wall of the air inlet cover is fixedly sleeved with a hole plate. By means of the coanda effect, airflow evenly diffuses all around after passing through the surfaces of the inner flow guide cover and the flow dividing skirt, part of the airflow flows along the outer wall of the low-pressure cone through the low-pressure cone, flow is guided to the middle position to a certain degree, a low-pressure area is avoided, and the service life of the low-pressure cone is prolonged. Therefore, the air can be in full contact with the molecular sieve.

The utility model provides a kind of oxygen pressure machine oil station with double interlocking oil and gas discharge device, including oil station, oil mist separator, oil and gas exhaust fan, pressure gauge, pressure transmitter and interlocking device;Pressure gauge is installed on oil station to detect oil and gas pressure inside oil station;Pressure gauge is connected with oil and gas exhaust fan by pressure transmitter, and pressure signal is converted into current signal by transmitter, and the operation of oil and gas exhaust fan is controlled by current signal;Two oil and gas exhaust fans are installed on oil mist separator;Two oil and gas exhaust fans are connected by interlocking device, one is interlocked to start when one oil and gas exhaust fan fails, and two is that when the pressure inside oil station increases suddenly in a short time, two exhaust fans can be started simultaneously to discharge oil and gas quickly, ensure the safe operation of oil station, and ensure the normal operation of oxygen pressure machine.The utility model has no mechanical wear and tear and does not need maintenance, and has small overall size, simple structure, convenient installation and low energy consumption.

The utility model discloses a dustproof storage bag for an oxygen tank, and aims to solve the problems that in the prior art, the appearance is influenced, the storage function is not available, sealing and fixing are inconvenient, falling is easy to occur, the dustproof effect of the oxygen tank and an oxygen pressure gauge is influenced, and the standard check date and validity period are not good. The time is wasted and the rescue opportunity is delayed when the oxygen pressure gauge is temporarily installed or replaced and the wrench is found. The dustproof storage bag comprises an oxygen tank body, a protective cover is arranged above the oxygen tank body, a fixing sleeve is installed on the bottom face of the protective cover, a rope sleeve is installed at the bottom end of the fixing sleeve, and a drawing rope is arranged in the rope sleeve. The protective cover and the fixing sleeve are integrally arranged, so that the attractiveness of the protective cover during installation and use is guaranteed, the stability and the sealing performance of the dustproof storage bag during use are guaranteed, the dustproof storage bag is prevented from falling off during use, and then the dustproof effect of the dustproof storage bag is guaranteed.