96 results about "Gas conditioning" patented technology

The invention discloses a gas detector for air pollution detection, and belongs to the technical field of gas detection.The gas detector comprises an outer shell and an inner shell which are arranged in a sleeved mode and used for detecting gas to be detected; the adjusting mechanism is used for adjusting the height and angle of the detection mechanism; wherein an inner air inlet cavity is formed in the inner shell, and an outer air inlet cavity is formed between the outer shell and the inner shell; a sensor is mounted on the inner wall of the inner air inlet cavity; an exhaust pipe communicated with the inner air inlet cavity is arranged on the outer shell, and a fan is mounted in the exhaust pipe; a rotating ring is rotationally arranged on the radial inner wall of the outer shell and used for adjusting the opening and closing states of the inner air inlet cavity, the outer air inlet cavity and the exhaust pipe. The inner gas inlet cavity is a core detection area, a sensor is installed to make direct contact with to-be-detected gas, and the outer gas inlet cavity is a split-flow filtering area and serves as a temporary storage area of follow-up impurities. The exhaust pipe is communicated with the inner air inlet cavity, the fan is arranged in the exhaust pipe, and the fan provides active air suction and exhaust power and supports reverse blowing and cleaning of residual impurities in the cavity.

The invention relates to the technical field of terminals, in particular to a gas adjusting method and device for a fruit and vegetable storage space, a medium, a product and a chip. The method comprises the following steps: in a first time period, acquiring a first target concentration of oxygen, a first concentration of ethylene in a fruit and vegetable storage space and a first temperature of the fruit and vegetable storage space; fruits and vegetables of a first type are at least stored in the fruit and vegetable storage space; determining first predicted respiration intensity according to the first concentration, the first temperature, the first type and the first target concentration; acquiring first power consumption of the nitrogen making machine; determining a first balance value according to the first predicted respiration intensity, preset target respiration intensity and first power consumption; under the condition that the first balance value is smaller than the preset balance value, the oxygen concentration in the fruit and vegetable storage space is adjusted to be the first target concentration. Therefore, accelerated maturation of the fruits and vegetables caused by too high respiration intensity of the fruits and vegetables can be avoided, and high cost caused by too much nitrogen input of the nitrogen making machine can also be avoided.

The invention discloses a combustion suppression device for a battery module, which is mounted at a pressure relief opening of the battery module and forms a flow channel communicated with the pressure relief opening. The flow channel comprises a gas adjusting cavity and a fire extinguishing cavity which are communicated, and the gas adjusting cavity is arranged close to the pressure relief opening; at least one gas adjusting part is arranged in the flow channel, and the gas adjusting cavity is matched with the gas adjusting part so as to adjust the pressure and / or temperature of the high-temperature and high-pressure gas discharged from the pressure relief opening; a detachable container is arranged in the fire extinguishing cavity, the container is arranged in a breathable mode, the container is filled with a solid granular fire extinguishing agent, the fire extinguishing agent can be broken or decomposed under the action of adjusted gas and release fire suppression gas, and the fire suppression gas and the adjusted gas are discharged after being mixed so as to suppress combustion of discharged gas. According to the scheme, the fire suppression gas with effective concentration can be quickly released and maintained in the early stage of thermal runaway of the battery module, the reburning risk is remarkably reduced, the container is replaceable, and the maintenance cost is reduced.

The invention provides a meat preservation method with self-assembled nanoparticles cooperating with a three-layer controlled release film. The method comprises the following steps: S1, selecting fresh meat, removing impurities, cleaning, detecting the muscle fiber density and the total number of initial bacterial colonies, classifying the meat into I / II / III classes according to the standard, and pre-cooling and discharging acid for 18-24 hours under the conditions that the temperature is 0-2 DEG C, the air speed is 0.3-0.5 m / s and the humidity is 85-90%; s2.2, graded loading of dormant-state self-assembled nanoparticles at the temperature of 2-4 DEG C, I-type dip coating, II-type ultrasonic-assisted dip coating, III-type high-pressure atomization spraying and air drying in a blast environment after loading; s3, filling three layers of controlled release films, vacuumizing to-0.095 to-0.09 MPa, keeping for 20 seconds, filling customized controlled atmosphere according to grades, and then performing heat sealing; and S4.0, refrigerating at 0-4 DEG C. By constructing a synergistic mechanism that the self-assembled nano-particle adsorption layer recognizes a decay signal in a close range and the three layers of controlled release films release drugs in a linkage mode and strengthen barrier, the limitation that traditional preservation is passively inhibited and active ingredients are lost quickly is broken through, and the technical problems that bacteriostasis is not lasting, the water-retaining property is poor and sensory quality is prone to deterioration are fundamentally solved; and the fresh-keeping efficiency and the meat quality are both improved.

The utility model discloses an ice fresh big white duck air -conditioning fresh -keeping packaging device belongs to food packaging technical field, aims at the problem that manual pursuit takes out fresh -keeping packaging box and influences overall work efficiency, including the positioning board, the positioning board top fixedly connected with the bottom box, the utility model discloses a collection mechanism is set to when ice fresh big white duck packaging in the inside of the storage box is completed, and is moved to the air cylinder right below following the conveyer chain belt, and the air cylinder drives the push board to go up, and the push board will be pushed up to the inside of the limiting groove storage box, and passes through a plurality of baffle, because the baffle can only rotate unidirectionally, therefore storage box can stably place in a plurality of overlap interface top, along with the work's progress, under the cooperation of the jacks, the air cylinder drives the push board and can push a plurality of storage boxes in turn upwards, can arrange a plurality of packaging boxes in order from top to bottom according to the order of sample, greatly reduces manual intervention, improves the speed and efficiency of packaging production, and remarkably improves work efficiency.

A sterilization gas conditioning device (20) is described, comprising: a flow circuit (21) having an inlet opening (22) and an outlet opening (23), the inlet opening (22) being configured to receive gas exiting from an internal environment (5); a cleaning device (24) configured to remove particulate matter and / or chemical compounds from the gas; a suction device (25) configured to generate a suction force for guiding at least the gas through the inlet opening (22) and into the flow circuit (21); and at least one separation device (26) configured to separate a liquid phase from the gas. The at least one separation device (26) includes a collection section (27) for collecting the liquid phase. The sterilization gas conditioning device (20) includes at least one piping assembly (30) that fluidly connects the connecting portion (27) to the air inlet (31) of the flow loop (21), thereby forming a closed recirculation loop (32) between a portion of the flow loop (21) and the collection portion (27).

The invention discloses an ignition device for semiconductor tail gas treatment. The ignition device comprises a collection cavity, a storage cavity, a mixing cavity and a combustion cavity which are connected in sequence, and an ignition system. The ignition system comprises a sensing module, a fuel gas conditioning module, a control module and an igniter. High-concentration tail gas is collected through the storage cavity and released when the concentration is low, the stored tail gas or auxiliary fuel is sprayed into the mixing cavity for dynamic mixing through a mixing execution unit in the fuel gas conditioning module, the mixing proportion is actively adjusted through the control module based on real-time data of the sensing module and a built-in prediction model, and the fuel gas conditioning efficiency is improved. And stable combustible mixed gas is ensured to be formed and is finally ignited reliably by the igniter. The device effectively solves the problem of combustion interruption caused by severe fluctuation of semiconductor process tail gas concentration, and realizes efficient, stable and safe treatment of the tail gas.

The invention provides a sleeve shaft offset type environment loading in-situ mechanical test device, and relates to the technical field of material structure property detection. Comprising a driving motor, a top plate, an outer supporting column, a motor fixing plate, a gear set, an upper fixing plate, a bidirectional lead screw forward section, a bidirectional lead screw reverse section, a force sensor, an upper loading cross beam, a lower loading cross beam, a lead screw nut, an inner supporting column, a first flange corrugated pipe, a second flange corrugated pipe, a lower fixing plate, an offset inner sleeve shaft, an offset outer sleeve shaft, a sample upper chuck and a test sample. The device comprises a sample lower chuck, a gas regulating valve interface, a vacuumizing interface, a push rod motor, an in-situ observation window, an environment cabin and a bottom plate, the top plate and the bottom plate are connected through the outer supporting columns, and the motor fixing plate, the upper fixing plate and the lower fixing plate are sequentially connected between the top plate and the bottom plate. The bidirectional lead screw between the upper and lower fixing plates serves as a power transmission core to realize motion conversion; the force sensor collects load data in real time, and sealing isolation in the movement process is guaranteed through the flange corrugated pipe.

The application relates to the technical field of terminals, in particular to a fruit and vegetable storage space gas adjusting method, device, medium, product and chip. In the method, a first target concentration of oxygen and a first concentration of ethylene in a fruit and vegetable storage space and a first temperature of the fruit and vegetable storage space are acquired within a first time period; at least a first type of fruit and vegetable is stored in the fruit and vegetable storage space; a first predicted respiration intensity is determined according to the first concentration, the first temperature, the first type and the first target concentration; a first power consumption of a nitrogen generator is acquired; a first balance value is determined according to the first predicted respiration intensity, a preset target respiration intensity and the first power consumption; and the oxygen concentration in the fruit and vegetable storage space is adjusted to the first target concentration in the case that the first balance value is less than a preset balance value. In this way, the respiration intensity of the fruit and vegetable can be prevented from being too large to cause the fruit and vegetable to mature rapidly, and the nitrogen generator can be prevented from inputting too much nitrogen to cause high cost.

The application discloses a kind of fiber oxidation degree adjusting system, namely method, including oxidation furnace, detection module and gas adjusting module: oxidation furnace is used to oxidize the fiber;Detection module is arranged at the out-silk port of the oxidation furnace, for real-time detection of the oxygen content of the fiber after oxidation, and generates adjustment signal based on the oxygen content;Gas adjusting module is arranged at the position of the gas inlet of the oxidation furnace, for inputting mixed gas into the oxidation furnace, and the gas adjusting module is communicatively connected with the detection module, for adjusting the oxygen content of the mixed gas input into the oxidation furnace according to the adjustment signal.The application generates an adjustment signal by real-time detection of the change amount of the weight of the fiber after oxidation, and then adjusts the oxygen content of the mixed gas input into the oxidation furnace, realizes real-time adjustment of the oxidation degree of the fiber, is convenient and rapid, avoids the occurrence of oxidation degree adjustment hysteresis of the fiber, reduces the gap of oxygen content per unit volume of the fiber, and improves the performance of the fiber.

This invention provides an experimental apparatus and method for simulating the movement of metal particles inside a GIS (Gas Insulator System). The apparatus includes: a transparent outer shell with a sealed cavity inside, housing an insulator, a central conductor, and metal particles simulating a GIS device; a grounded transparent conductive film disposed on the inner wall of the transparent outer shell; a laser heater disposed outside the transparent outer shell; the laser heater emits a laser beam to the central conductor to heat it; a vibration generator connected to the outer wall of the transparent outer shell to drive the transparent outer shell to vibrate, simulating vibration conditions; and a gas conditioning device connected to the sealed cavity to extract gas from the sealed cavity and introduce insulating gas from the GIS device to regulate the gas environment. This invention provides an experimental apparatus and method for simulating the movement of metal particles inside a GIS, which can solve the problems of heat generation simulation distortion, limited observation, and lack of vibration condition simulation in observation platforms.

The invention discloses a dense storage roadway sealing air-conditioning cluster regulation and control system and a dense storage roadway sealing air-conditioning cluster regulation and control method. The system comprises a central master control center, at least one area controller, an area gas source / temperature and humidity processing station, a plurality of roadway units with sealing structures and local execution modules, and a grading pipeline system for connecting the roadway units. According to the method, target parameters and priorities are configured for all roadway units through a central master control center; the area controller is used for driving and sealing, collecting environment data, generating a scheduling instruction for a plurality of roadways according to deviation and priorities under the condition of meeting public resource constraints, and controlling the public processing station to supply a regulation and control medium in a cooperative manner; the roadway local execution module carries out closed-loop fine adjustment; the system can also cooperate with access operation. By means of the mode of centralized supply, partition regulation and control and independence and accuracy, the problems that a traditional mode is high in cost and energy consumption and low in resource utilization rate are solved, and efficient, reliable and intelligent air conditioning management of a large-scale roadway cluster is achieved.

The application relates to a C4F7N mixed gas recovery and inflation device and belongs to the technical field of recovery and inflation of insulating gas. The C4F7N mixed gas is first recovered and purified, then is stored in a liquid state through low-temperature refrigeration and pressurization, and when inflation is needed, C4F7N, CO2 or O2 is added to the vaporized C4F7N mixed gas to adjust the mixed gas concentration for inflation use. The C4F7N mixed gas is recovered through low-temperature refrigeration and pressurization and is stored in a liquid state in a container, the filling rate of the container is effectively improved, when inflation is needed, the mixed gas is supplemented to adjust the mixed gas concentration, compared with the existing pure C4F7N gas adjustment, the gas adjustment time is reduced, and the adjustment efficiency is improved.

GAS REGULATION VALVE FOR AN ATMOSPHERIC BATTERY AND BATTERY EQUIPPED WITH SUCH A VALVE. A gas regulation valve (1) for the gas contained in the envelope of an atmospheric balloon, said valve comprising a fixed flange (10) intended to be integral with the envelope of said balloon, a movable flange (20), a flexible, leak-proof membrane (30) integral with the two flanges and defining a gas circulation channel, and means for rotating the movable flange relative to the fixed flange between a position, referred to as the open position, in which the gas flow can escape into said circulation channel formed by said membrane (30), and a position, referred to as the closed position, obtained by twisting said membrane (30) according to a hyperboloid structure that prevents any gas circulation through said valve. Figure for the abbreviation: Figure 4

The invention provides an automatic regulating device for internal and external air pressure of a refrigerated container body, and relates to the field of refrigeration and air regulation of containers. The device for automatically adjusting the air pressure inside and outside the refrigerated container body comprises a refrigerating unit and further comprises a temperature adjusting assembly, an air adjusting assembly and an air pump assembly, and the temperature adjusting assembly is installed on the inner wall of the end of the container. According to the automatic regulating device for the internal and external air pressure of the refrigerated container body, the temperature regulating assembly is arranged, a centrifugal fan is used for transversely feeding air from the middle of a container, the fed air is dissipated from the upper, lower, front and back surfaces of an omnidirectional refrigeration cover after heat exchange, and compared with direct transverse air blowing, the cold air circulating effect is better, and the temperature of the head and the tail of the container can be rapidly balanced; intelligent two-way gas adjustment is achieved, and the space environment in the container is kept stable. The fruits and vegetables enter a dormant state by reducing or inhibiting the respiration of the fruits and vegetables.

The utility model relates to the technical field of aquarium equipment, and specifically discloses an external gas regulator for aquarium, which comprises a threaded adjusting upper cover and a threaded adjusting lower cover, the threaded adjusting upper cover is threadedly connected with the threaded adjusting lower cover, an air inlet is formed in the upper end of the threaded adjusting upper cover, an air outlet is formed in the bottom of the threaded adjusting lower cover, a conical air diffusing column is arranged in the threaded adjusting upper cover, a plurality of air diffusing holes are formed in the outer side of the conical air diffusing column and communicate with the air inlet, a conical through hole that is matched with the conical air diffusing column is formed in the threaded adjusting lower cover, and the conical through hole communicates with the air outlet.

The invention belongs to the technical field of thermotechnical fluid tests, and discloses a thermotechnical fluid test system precious gas pressure stabilizing and recycling device and method.The device comprises a plurality of air bag type pressure tanks, each air bag type pressure tank is provided with an inlet adjusting valve, an outlet adjusting valve and a gas adjusting valve, and the gas adjusting valves are connected with a precious gas supplementing loop; the valuable gas supply loop is connected with the helium test loop, the helium test loop is connected with the vacuum pump set, the inlet regulating valve is connected with the water pump, the water pump is connected with the plant water inlet, and the outlet regulating valve is connected with the plant water outlet. Water is injected into part of the air bag type pressure tanks in sequence, gas is compressed into the remaining air bag type pressure tanks, the gas is stored in the different air bag type pressure tanks, and the helium test loop is filled with the recycled gas. The device is easy and convenient to operate, and pressure adjustment and gas recovery can be achieved by controlling the water level.

The technical scheme of the utility model discloses a 320-cylinder-diameter dual-fuel engine electric control system based on multi-mode cooperative control, which is characterized by comprising a main MCU control module and an FPGA real-time monitoring module which are connected with each other, the FPGA real-time monitoring module is connected with a security module, the security module is connected with a gas leakage monitoring module, and meanwhile, the FPGA real-time monitoring module is connected with the gas leakage monitoring module. A data receiving end of the security module is connected with the sensor, the ESD button and the oil mist detector, and a control signal output end of the security module is connected with the GVU pressure regulating valve, the exhaust valve, the alarm device and the fuel oil stop valve; the FPGA real-time monitoring module is connected into the Ethernet and the hard wiring harness, the pressure sensor, the temperature sensor, the liquid level switch, the on-site remote change-over switch, the combustion analyzer, the waste gas bypass valve, the gas valve, the main lubricating oil pump, the exhaust ventilation valve, the exhaust valve, other auxiliary equipment, the cartridge valve, the gas adjusting valve and buttons of the LOP module are connected into the hard wiring harness, and a display screen of the LOP module is connected into the Ethernet.

According to one example of the present disclosure, a fumigating apparatus includes a mixing chamber having a first inlet and a second inlet. A gas conditioner, pump, or compressor directs a flow of non-flammable gas along a first passage from a non-flammable gas source through or through a heater to the first inlet of the mixing chamber, and a chemical pump directs a flow of chemical fumigant along a second passage from a chemical fumigant source to a second inlet of the mixing chamber. The temperature sensor measures the temperature of the mixed flow of hot gas and chemical fumigant at the outlet of the device. A controller controls the gas conditioner, pump or compressor, and / or the chemical agent pump based on the temperature measured by the temperature sensor to maintain the hot gas and chemical fumigant flow exiting the fumigating apparatus outlet at a predetermined temperature or higher.

We want to be able to generate a desired gas concentration difference between multiple containment chambers containing cell samples, etc., with relatively high precision using gas control in two separate spaces, and to enable long-term experiments. [Solution] In the internal gas circulation container 3, the containment chamber, which is partitioned by openings 23 and 7, is closed at the bottom by a chamber slide 13 and at the top by a glass plate 29, forming a sealed chamber 62. Adjacent sealed chambers 62, 62 are in ventilated communication via through holes 27 to gas adjustment chambers 32. In the gas adjustment chamber 32, the internal gas circulating inside the internal gas circulation container 3 and the external gas are separated by a porous membrane sheet 31, and gas exchange occurs if there is a difference in gas concentration. An arbitrary difference in the concentration of O2 gas in the internal gas is generated between adjacent sealed chambers 62, 62 separated by the gas adjustment chamber 32. The gas concentration of the internal gas in each sealed chamber 62 is maintained with higher precision than when adjusting using oxygen absorbers, etc. Moreover, it can accommodate long-term experiments.

The utility model discloses a hotbed chive growth gas adjusting system based on STM32, a gas adjusting mechanism comprises a first solenoid valve, a second solenoid valve, a carbon dioxide gas cylinder, an oxygen cylinder, a fixer, a carbon dioxide concentration sensor and an oxygen concentration sensor, the first solenoid valve is connected with an outlet of the oxygen cylinder to control release of oxygen; the second electromagnetic valve is connected with an outlet of the carbon dioxide cylinder to control release of carbon dioxide; the first electromagnetic valve and the second electromagnetic valve are electrically connected with the STM main control chip respectively; the temperature and humidity adjusting mechanism comprises a temperature and humidity sensor, a fan, a water spraying pipe, a water tank, a hose and a third electromagnetic valve, and when it is monitored that the temperature and humidity in the system are lower than a set threshold value, the electromagnetic valve is opened for water supplementing drip irrigation or cooling treatment. In the growth process of the hotbed chives, the best oxygen concentration, carbon dioxide concentration and temperature and humidity environment is provided for the hotbed chives in time, and precise growth adjustment is achieved to increase the yield.

The application relates to the technical field of medical instruments, and discloses a plasma treatment pen and a treatment device, which comprise a shell, one end of the shell has an opening along the length direction of the shell; a gas adjusting module is arranged in the shell, the gas adjusting module is used for converting air into nitrogen-rich gas; a plasma generating assembly is arranged in the shell, the plasma generating assembly is arranged between the opening and the gas adjusting module along the length direction of the shell, and the plasma generating assembly is used for ionizing the nitrogen-rich gas; a power module is arranged in the shell, the power module is electrically connected with the plasma generating assembly; and the power module is electrically connected with the gas adjusting module. By integrating the gas adjusting module and the plasma generating assembly in the shell, the portability of the treatment device is improved, and the use convenience is improved.

The invention discloses an anaerobic single-chamber integrated device and method for electrochemical quantitative microbial electron transfer. The device comprises a cylinder body with an open top and an upper cover connected with the cylinder body in a sealing manner, and the cylinder body and the upper cover enclose to form a sealed anaerobic chamber. The upper cover is provided with a liquid injection port and a liquid inlet part, and an air inlet and an air outlet are formed in opposite side walls of the upper cover; the device further comprises an electrode assembly, a gas adjusting assembly, a stirring assembly, a heat management assembly and a control assembly. The method comprises the following steps: preparing an electrolyte solution containing an ABTS / EtV electron transfer medium, injecting the electrolyte solution into an anaerobic chamber, introducing inert gas to construct an anaerobic environment, starting stirring and temperature control, connecting an electrochemical workstation to carry out an oxidation / reduction test, and recording a current-time curve to quantify the electron transfer capability. The device is high in integration degree, can solve the problems that an existing device is unstable in anaerobic environment, uneven in mixing and poor in temperature control, improves the electrochemical test precision, and is suitable for the fields of microbial electron transfer mechanism research and environmental pollutant degradation.

The utility model discloses nitrogen separation and recovery equipment for tire vulcanization, and relates to the technical field of nitrogen recovery and utilization. The device structurally comprises a recovered nitrogen mixing storage tank, a filter separator, a heat exchange cooler, a nitrogen buffer storage tank and a liquefied nitrogen storage tank which are sequentially connected through pipelines, a sucking pump and a first electromagnetic pipeline valve are mounted on a pipeline at the gas inlet end of the recycled nitrogen mixing storage tank; a gas regulating valve is mounted on a pipeline between the recovered nitrogen mixing storage tank and the filter separator; a compressor and a second electromagnetic pipeline valve are mounted on a pipeline between the nitrogen buffer storage tank and the liquefied nitrogen storage tank; and a third electromagnetic pipeline valve is mounted on an output pipeline of the liquefied nitrogen storage tank. According to the utility model, through a series of treatment on recovered nitrogen, not only is the cyclic utilization rate of resources improved, but also the purity and supply stability of the nitrogen are guaranteed through multiple technical means, meanwhile, energy conservation, emission reduction and automatic control are realized, and remarkable economic and environmental benefits are achieved.

The invention discloses a process gas adjusting device and a process chamber, and relates to the field of semiconductors. A process gas adjusting device is applied to a process chamber of semiconductor process equipment and comprises a device body, a gas inlet pipe and a gas outlet pipe, a gas inlet channel, a gas transmission channel and a plurality of gas outlet channels are arranged in the device body, the gas transmission channel is annularly arranged in the device body in the circumferential direction of the device body, the gas inlet channel and the gas outlet channels are communicated with the gas transmission channel, the gas outlet channels are arranged in the circumferential direction of the device body, and the gas outlet channels are communicated with the gas transmission channel. The plurality of grooves are respectively positioned on the periphery of a bearing surface for bearing wafers; and each air outlet channel obliquely extends towards the direction of the center line of the bearing surface. According to the invention, at least one problem of wafer etching difference and unreasonable etching selection ratio can be solved.

The invention provides a transfer heat preservation device for aluminum alloy forgings. The transfer heat preservation device comprises a forging press. The movable workbench is arranged on one side of the forging press and used for bearing and transporting workpieces; the heat preservation cover assembly is used for conducting heat preservation on a workpiece located on the movable workbench; the mechanical arm is used for grabbing and moving the heat preservation cover assembly; the heat preservation cover assembly comprises a heat preservation cover, a bottom frame fixedly connected to the bottom of the heat preservation cover and a lifting frame connected to the top of the heat preservation cover through an elastic lifting mechanism. A gas adjusting channel is arranged between the lifting frame and the heat preservation cover, and high-temperature gas in the heat preservation cover can be exhausted through the gas adjusting channel in the first period when the mechanical arm drives the lifting frame to ascend; and in the second period of rising, the gas adjusting channel is closed, so that the traditional mode of depending on an independent heat preservation furnace or manual wrapping is thoroughly abandoned, and the heat preservation procedure is seamlessly integrated on the production line.

The invention relates to the field of gas breathing circulation regeneration, and discloses a gas breathing circulation system based on bionic half gills and an underwater respirator, the gas breathing circulation system comprises a respirator, the respirator is used for breathing interaction of a user; the bionic half gill is internally provided with a permeable diaphragm for air-water exchange; the respirator and the bionic half gill are connected in series through a connecting pipeline to form a gas circulation loop; based on the characteristic that the solubility and the mass transfer rate of carbon dioxide in water are far higher than those of oxygen, the scheme realizes that carbon dioxide is efficiently transferred only by a physical diaphragm without a chemical adsorbent, so that not only is the chemical risk thoroughly eliminated, but also the utilization rate of oxygen is increased by several times by recycling residual oxygen in exhaled gas; and finally, the underwater operation time is remarkably prolonged under the same oxygen carrying amount, meanwhile, the breathing comfort is guaranteed through the gas adjusting cavity, intelligent regulation and control of gas components are achieved through the exhaust port, and the system has safety, high efficiency and engineering feasibility.

The invention, which relates to a filter element (1) for respiratory gas conditioning with a speech function, is based on the objective of providing a filter element (1) for use with a tracheotomized or laryngectomized person, wherein the filter element (1) is robust, easy to operate, and inexpensive to manufacture. This objective is achieved by the housing (2) comprising a first housing part (5) and a second housing part (6) connected to the first housing part (5), the first opening (3) being arranged in the second housing part (6), the first housing part (5) being a single piece comprising an outer ring (7), a central upper part (8), and elastically deformable webs (9) arranged between the outer ring (7) and the upper part (8).

The utility model discloses a combustible gas burner, including support, the inside of support is provided with mixing chamber, one side fixedly connected with gas regulating valve of support, the input of gas regulating valve is provided with combustible gas joint, the inside fixedly connected with gas spray head of support in mixing chamber. The utility model relates to metal casting technical field, solved in the prior art, adopt the mode of roasting to the metal liquid flow tank and carry out preheating, in the roasting process, and it is easy to cause the flow tank deformation or damage because of flame temperature too high, and further cause, increase production cost and maintenance difficulty, at the same time, the liquid metal is easy to lose a large amount of heat in the flowing process, need through the equipment such as the improvement of heat preservation furnace, degassing furnace, filter box heater to supplement in normal production process, but when these equipment appear the fault and are not repaired, will directly influence production, even cause production failure, influence the continuity of production and product quality problem.

The utility model discloses a flow-adjustable cutting fluid spray head, which belongs to the technical field of cutting fluid spray heads and comprises a main spray pipe. The spraying mechanism is arranged on the main spraying pipe; the adjusting box is fixedly installed on the top of the main spraying pipe, a positioning plate is arranged on the adjusting box, the device is fixedly installed in the polishing device through positioning, and the connection relation between the positioning plate and the adjusting box can be adjusted according to specific conditions; the liquid adjusting mechanism and the gas adjusting mechanism are arranged on the adjusting box, a temperature sensor is arranged on the liquid adjusting mechanism, the detection end of the temperature sensor is arranged at the driving end of the grinding machine, and the temperature generated by the grinding belt can be monitored in real time. By arranging the gas adjusting mechanism, cutting fluid can be atomized, the cutting temperature is reduced, the residual stress on the surface of a workpiece is reduced, the cooling effect is improved, meanwhile, the viscosity between the workpiece and the grinding belt can be reduced, the resistance between the grinding belt and the workpiece is reduced, the abrasion speed of a cutter is reduced, and the service life of the device is prolonged.