244 results about "Nitrogen generator" patented technology

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 coal mine goaf low-temperature nitrogen fire preventing and extinguishing technology integrating intelligent monitoring and control, and belongs to the technical field of coal mine goaf fire preventing and extinguishing. The system comprises a ground nitrogen making machine, a ground monitoring center, an underground nitrogen cooling device, an intelligent monitoring module and a PLC intelligent control module. The nitrogen cooling device comprises a plate heat exchanger, a variable-frequency single-screw compressor, an air-cooled condenser, a liquid storage tank and an electromagnetic control valve which are connected in sequence; the intelligent monitoring module comprises a sensor unit and a communication transmission module; the PLC intelligent control module comprises a core controller, a man-machine interaction unit and a remote transmission unit; and the PLC intelligent control module automatically controls the start and stop of the system according to a preset three-level fire prevention and extinguishing threshold value, and dynamically adjusts the cooling temperature and the refrigerating capacity. According to the invention, 'monitoring-regulation-feedback 'closed-loop intelligent control is realized, an efficient and safe fire prevention and extinguishing technical support is provided for a special mining period of a mine easy to spontaneously ignite, and the system adapts to an underground complex environment.

The application provides a micro-nanometer flaky silver powder preparation line and relates to the technical field of silver powder preparation.The preparation line integrates the structures of a grinding and screening machine, a pneumatic washing and purifying kettle, a nitrogen generator, a nitrogen heater and the like in an integrated design, wherein the grinding and screening machine adopts a multi-layer design of a ball-milling and screening inner cylinder, a screening and collecting intermediate barrel and a heat-exchanging rotary driving outer barrel, so that the grinding of spherical silver powder and the screening of target flaky silver powder are simultaneously realized; the material mixing mechanism ensures the uniformity of the material mixing in the horizontal ball mill, shortens the ball milling time and reduces the over-milling loss; the pneumatic washing and purifying kettle realizes the dispersion washing of the material after the solid-liquid separation through negative pressure liquid extraction, reduces the phenomenon of hardening and uneven manual washing; and the nitrogen heating airflow drying realizes the fluidized drying of the flaky silver powder material, so that the technical problems of the batch quality fluctuation of the silver powder product caused by the stability problem of the ball milling process and the pollution of the grinding aid and the grinding ball to the target flaky silver powder in the ball milling process are solved.

The invention relates to the technical field of electric flame stoves, in particular to an electric flame stove with low nitrogen oxide emission and an operation method of the electric flame stove. According to the technical scheme, the device comprises a gas supply unit, a discharge cooking range and a plasma power supply and is used for preparing and supplying high-purity nitrogen; the discharge cooking range is communicated with the gas supply unit and is used for receiving the high-purity nitrogen as working gas; and the plasma power supply is electrically connected with the discharge cooking range and is used for providing discharge electric energy for the discharge cooking range. According to the invention, high-purity nitrogen is used as a discharge medium instead of air, so that the generation of nitrogen oxides and ozone is inhibited from the source, and the pollutant discharge is obviously reduced; meanwhile, the system is highly compatible with an existing cooking range structure, and can adapt to various discharge forms without modification; the air compressor, the nitrogen making machine, the power supply and other components are integrated in the stove body, so that the miniaturization and integration of the equipment are realized; and in cooperation with gas storage pressure stabilization and flow regulation control, the stability of system operation and the simplicity and convenience of operation are ensured.

This invention provides a nitrogen generator, comprising a gas pump, an annular buffer chamber, a first pipeline, and a second pipeline. The gas pump's outlet pipe is connected to both the first and second pipelines, which are in turn connected to the annular buffer chamber. The gas pump draws in air through the inlet pipe and discharges it into the first and second pipelines in the form of airflow. The first pipeline discharges airflow with a pressure greater than a preset airflow pressure into the annular buffer chamber. The second pipeline discharges airflow with a pressure less than a preset airflow pressure into the annular buffer chamber. The annular buffer chamber uniformly mixes the airflow with the pressure greater than the preset airflow pressure with the airflow with the pressure less than the preset airflow pressure. This invention reduces airflow pressure fluctuations, pipeline vibration, and airflow noise by uniformly mixing airflows with different pressures flowing through the first and second pipelines within the annular buffer chamber.

The invention relates to a pressure swing adsorption type nitrogen generator and a preparation method, and relates to the technical field of nitrogen preparation, the pressure swing adsorption type nitrogen generator comprises a nitrogen preparation device, the nitrogen preparation device comprises a first adsorption tower and a second adsorption tower which are designed to alternately prepare nitrogen, and gas outlets of the first adsorption tower and the second adsorption tower communicate with each other through a connecting pipeline; the middle part of one side of the connecting pipeline is communicated with a gas outlet pipeline communicated with the nitrogen storage tank, so that two lagging sections are formed between the gas outlet pipeline and the two gas outlets and are used for intercepting nitrogen containing residual oxygen, and the gas outlets of the first adsorption tower and the second adsorption tower are provided with oxygen detection pieces; a reverse pressurizing pipeline communicated with the reverse pressurizing pipeline is arranged between the carbon molecular sieve filling block and the gas outlet pipeline on the other side of the lagging section, and through the reverse pressurizing pipeline, the preparation purity of nitrogen can be improved, the pressure difference can be increased, the desorption rate of the adsorption tower can be increased, and the purity of nitrogen prepared in the next process can be improved.

The utility model relates to nitrogen making machine technical field provides a kind of nitrogen making machine, comprising: base and multiple radiating fans, air compressor, fixedly installed in the top of base, the air compressor is fixedly installed with air inlet pipe on the side close to its top, the air compressor is fixedly installed with long gas pipe on the side away from air inlet pipe;Fan, rotates in the inside of long gas pipe, the utility model, when using, the temperature of air compressor increases, gas is driven to rotate after passing through the fan in the inside of long gas pipe, fan drives belt two to move by belt pulley, the other end of belt two is driven to move by belt one through belt pulley at this time, belt one drives radiating fan to rotate at this time, while radiating fan is connected by belt one and belt pulley, so that multiple radiating fans rotate simultaneously, can carry out heat dissipation to the inside of air compressor when rotating, improve the working efficiency of air compressor.

The invention relates to the technical field of nitrogen making machines, in particular to a nitrogen making machine convenient to maintain and use in a low-temperature environment and a using method of the nitrogen making machine. The heating assembly comprises a heat source, a partition plate, a connecting pipe, a waste heat recovery pipe and an exhaust pipe, hot air generated by the heat source can be preferentially blown to the double-tower nitrogen-making equipment, then the hot air enters the maintaining cavity through the hot air flow channel to conduct auxiliary heating on other equipment in the nitrogen-making assembly, and finally the hot air cooled in the maintaining cavity enters the waste heat recovery pipe through the connecting pipe to conduct auxiliary heating on the other equipment in the nitrogen-making assembly. The interior of the waste heat recovery pipe is hollow, the waste heat recovery pipe preheats air in the air inlet pipe in a convective heat exchange mode, and low-temperature air obtained after heat exchange is completed is exhausted out of the box body through the exhaust pipe.

The utility model provides a portable modularized nitrogen making machine. The portable modularized nitrogen making machine comprises a gas inlet seat and a gas outlet seat, wherein the gas inlet seat and the gas outlet seat are respectively provided with a gas inlet channel and a gas outlet channel; the air inlet end and the air outlet end of the adsorption module are respectively communicated with the air outlet end of the air inlet channel and the air inlet end of the air outlet channel; the first connecting piece is detachably arranged at the air inlet end of the air inlet channel in a sealing manner; the second connecting piece is detachably arranged at the air outlet end of the air outlet channel in a sealed mode. Pipeline connection among a compressed air pipeline, an air inlet channel and an air inlet control valve is achieved through a first input channel, a first output channel and a first control cavity which are integrally integrated in a first connecting piece. And the second input channel, the second output channel and the second control cavity which are integrally integrated in the second connecting piece realize pipeline connection among the nitrogen pipeline, the gas outlet channel and the gas outlet control valve, so that the number of pipe fittings required by the nitrogen making machine is greatly reduced, rapid installation of the gas pipeline of the nitrogen making machine is realized, the production efficiency is improved, and the production cost is reduced. And connection points of gas pipelines can be reduced, and the gas leakage risk is reduced.

The flow-adjustable nitrogen generator comprises a collecting tank and a shell connected with the nitrogen generator, a shell cover is installed at the upper end of the shell, a stopping block for automatically closing the collecting tank to collect nitrogen is arranged in the shell, a gas inlet is formed in the outer ring face of the stopping block, and a gas outlet is formed in the outer ring face of the stopping block. An air outlet hole is formed in the bottom surface of the shell opposite to the air inlet, a connecting pipe is mounted on the bottom surface of the shell opposite to the air outlet hole, an air injection pipe on the collecting tank is mounted in the connecting pipe, a plurality of air catching grooves are formed in the outer ring surface of the stop block, the two sides of the shell protrude to form thickened parts, and arc-shaped grooves communicated with the shell are formed in the thickened parts; and a clamping plate for clamping and positioning the stop block is arranged in the arc-shaped groove. The device is simple in structure, nitrogen can be automatically blocked and intercepted through the blocking block, the danger caused when the nitrogen continuously enters the inner wall of the collecting tank is avoided, and the nitrogen does not need to be checked all the time.

The invention provides a control method and device of a nitrogen making machine and the nitrogen making machine, and relates to the technical field of nitrogen making machines, and the control method of the nitrogen making machine comprises the steps that air is introduced into an air compressor to generate first compressed air; moisture, oil and particles in the first compressed air are removed, and purified air is generated and guided into an air storage tank; the adsorption separation equipment is controlled to adjust the valve opening degree according to the air pressure of purified air, and first nitrogen is separated out; controlling the adsorption separation equipment to close a valve, and analyzing the nitrogen element content of the first nitrogen; guiding the first nitrogen to separate out qualified nitrogen or unqualified nitrogen, guiding the qualified nitrogen into a nitrogen storage tank, and guiding the unqualified nitrogen back to the adsorption tower for adsorption again; the qualified nitrogen is stored and subjected to pressure regulation, and second nitrogen is obtained; and controlling the second nitrogen to be cleaned and filtered through the dust filter, and releasing the second nitrogen. According to the invention, rapid starting can be realized, purity stability is improved, gas waste is reduced, and system energy consumption is reduced.

The application discloses a kind of recovery device for nitrogen making machine, it is related to nitrogen making machine technical field, including processing table, the top of the processing table is fixedly installed with nitrogen making mechanism, the surface of nitrogen making mechanism is fixedly penetrated with inlet pipe, the surface of inlet pipe is fixedly installed with fixed pipe, the top of fixed pipe is rotatably penetrated with inlet valve, the surface of fixed pipe is fixedly installed with round pipe, knock plate is rotatably installed on the inner wall of round pipe, the surface of knock plate is fixedly installed with elastic sheet, the inner wall of round pipe is fixedly installed with clamping plate, the inner and outer walls of round pipe are rotatably penetrated with baffle, by triggering the rotation of baffle, avoid the situation of leakage when inlet pipe continues to discharge oxygen-rich waste gas, realize the effective management of oxygen-rich waste gas leakage, effectively reduce the waste of resources when leakage occurs.

The present application belongs to the technical field of coal seam permeability improvement in underground coal mine drilling, and provides a coal seam permeability improvement device and method for low-permeability coal seam in underground coal mine by temperature-variable jet flow, which comprises a jet flow nozzle installed at the outlet of a high-pressure water pipe, the inlet of the high-pressure water pipe being connected with a high-pressure water pump, and the high-pressure water pump being connected with a rapid heater; the jet flow nozzle is further connected with a liquid nitrogen generator through a vacuum heat insulation pipe, the inlet end of the liquid nitrogen generator being connected with a nitrogen generator, the outlet end being connected with the inlet end of a liquid nitrogen storage tank, the outlet of the liquid nitrogen storage tank being connected with a liquid nitrogen tank group, the outlet end of the liquid nitrogen tank group being connected with a cryogenic pump, and the outlet of the cryogenic pump being connected with the jet flow nozzle through a vacuum heat insulation pipe; the device effectively increases the fissure size of the drilling, improves the coal seam permeability, and increases the gas production. Meanwhile, a liquid nitrogen production device is used to directly produce liquid nitrogen, which is low in cost and can be reused. The method is simple and easy to operate, can effectively solve the loss of liquid nitrogen in the transportation process, improve the effect of liquid nitrogen on the coal body, and improve the coal seam permeability improvement effect.

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 utility model relates to the technical field of copper powder production, in particular to stirring equipment for copper powder production, which comprises a stirring barrel, a vacuum pump fixedly mounted at the top of the stirring barrel, an exhaust pipe mounted at the bottom of the vacuum pump and vertically inserted into the stirring barrel, and a nitrogen generator fixedly mounted at the top of the stirring barrel. Two nitrogen output pipes are fixedly installed at the bottom of the nitrogen generator and vertically inserted into the stirring barrel, and a circulation assembly is arranged at one end of the stirring barrel. According to the copper powder stirring device, oxygen in the stirring barrel is pumped out by the vacuum pump before the copper powder is stirred, so that the oxygen content in the stirring barrel is kept at a lower level, then nitrogen generated by the nitrogen generator enters the stirring barrel, the copper powder cannot be oxidized when the copper powder is stirred at the moment, and subsequent use of the copper powder is facilitated.

The invention belongs to the technical field of agricultural product fine processing, and particularly discloses a hop freshness locking system and method based on stepped quick freezing and low-temperature crushing, the system comprises a picking treatment module, a pre-cooling module, a low-temperature crushing module and a packaging cryopreservation module, the picking treatment module comprises a picking vehicle, a fruit-removing magnetic-separation impurity-removing machine and a mixing pool; the pre-cooling module comprises a first low-temperature workshop, and a conveying belt and an industrial air cooler are arranged in the first low-temperature workshop. The low-temperature crushing module comprises a low-temperature workshop II; a crusher and a mixer are arranged in the low-temperature workshop II; the packaging and cryopreservation module comprises a third low-temperature workshop and a refrigerating chamber. A quantitative packaging machine, a primary vacuumizing device, a nitrogen making machine, a secondary vacuumizing device and a sealing packaging machine are arranged in the third low-temperature workshop. Through stepped quick freezing and a whole-course low-temperature environment, the heat damage and oxidation speed in the processing process are greatly reduced, the shelf life is prolonged, and the batch consistency of products is ensured.

The utility model relates to the technical field of nitrogen making machines, and discloses a special nitrogen making machine for welding, which comprises a shell body, a gas cylinder is fixedly connected in the shell body, a gas pipe is fixedly connected above the gas cylinder, one end of the gas pipe is fixedly connected with a four-way pipe, a bearing plate I is arranged in the gas pipe, and a bearing plate II is arranged in the bearing plate I; a filter plate is slidably connected to the interior of the first bearing plate, a second bearing plate is attached to the upper portion of the first bearing plate, a first connecting plate is fixedly connected to the upper portion of the filter plate, the side of the second bearing plate is fixedly connected to the outer wall of the first connecting plate, and a first dismounting and mounting assembly is arranged at one end of the second bearing plate. The bearing plate provided with the filter screen is connected with the fixing plate above the bearing plate through the connecting plate, the connecting plate can be controlled by screwing the nut, the filter screen is convenient to replace, meanwhile, the pipeline can be firmly clamped and fixed by adopting the threaded pipeline and the clamping sleeve structure and screwing the nut, and the universality and the flexibility of equipment are improved.

1. The name of the design product: nitrogen generator (KL35-1). 2. The use of the design product: for preparing nitrogen. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to the field of nitrogen making machines, in particular to modular compact nitrogen making machine equipment easy to maintain. According to the modular easy-to-maintain compact nitrogen making machine equipment, the device can be rapidly assembled for nitrogen making, meanwhile, the activated carbon plate and the drying plate can be conveniently and rapidly assembled, disassembled, cleaned and replaced, maintenance is convenient, the replacing and cleaning efficiency is improved, and the working efficiency is improved. Modularized compact nitrogen making machine equipment easy to maintain comprises a bottom plate, a fixing frame and the like, and the right portion of the bottom plate is connected with the fixing frame. The air inlet pipe is installed on the filter screen pipe, and then the cover plate, the guide rail, the groove plate, the guide rod, the protruding block and the carrying plate are used in cooperation to conduct limiting installation on the activated carbon plate and the drying plate for nitrogen generation or unfolding, taking out, replacing or cleaning. Therefore, the device can be rapidly assembled for nitrogen generation, meanwhile, the activated carbon plate and the drying plate can be conveniently and rapidly assembled, cleaned and replaced, maintenance is convenient, the replacement and cleaning efficiency is improved, and the working efficiency is improved.

This invention relates to a nitrogen generator with a mining cooling mechanism, belonging to the field of nitrogen generator technology. It includes an air compressor, a buffer tank, an adsorption tower, a nitrogen process tank, and a nitrogen storage tank. The nitrogen storage tank has a tank structure with upper and lower inner walls. A cooler is installed on the rear side of the nitrogen storage tank. A connecting main pipe is fixedly installed on the lower side of the nitrogen storage tank surface. A connecting branch pipe is fixedly installed at the end of the connecting main pipe away from the nitrogen storage tank. Several outlet components are provided on the side of the connecting branch pipe away from the nitrogen storage tank. The outlet components include a combined pipe fixedly installed on one side of the connecting branch pipe surface. This invention uses a purely mechanical linkage structure to automatically adjust the nitrogen supply to different locations in the mine, eliminating the need for electrical control components and traditional sensors. This fundamentally avoids the generation of electrical sparks, significantly improving underground explosion-proof safety and making it more suitable for the high-risk working environment of coal mines.

This utility model discloses a dual-output air source device for instrument air and nitrogen generation, relating to the field of compressor maintenance technology. It includes a dual-unit air compressor, an oil-water separator, an adsorption dryer, a filtration system, a nitrogen generator, an instrument air storage tank, and a nitrogen storage tank. The dual-unit air compressor includes a first screw air compressor and a second screw air compressor. The inlet of the oil-water separator is connected to the outlet of the dual-unit air compressor, and the inlet of the adsorption dryer is connected to the outlet of the oil-water separator. The filtration system includes a first filter, a second filter, a third filter, and a fourth filter. The first and second filters are located at the inlet end of the adsorption dryer. This dual-output air source device can output clean, dry air and high-purity (99.98%) nitrogen, meeting the gas requirements of different equipment. The lifespan of the filter element (a vulnerable part) inside the adsorption dryer is greatly increased, reducing maintenance costs.

This invention discloses a detachable, modular nitrogen generator for easy transport, relating to the field of nitrogen generation equipment technology. The nitrogen generator includes a frame and a detachable nitrogen generator body on top. The top of the frame has an L-shaped locking block, and the outer side of the nitrogen generator body has a square mounting block. The L-shaped locking block is rotatably connected to a rotating locking cylindrical rod that can be locked into the square mounting block, and a quick-release locking assembly is used for fast disassembly and locking. The bottom of the frame has a bottom locking frame, which is quickly connected to or separated from the bottom locking plate via a quick-release assembly. A vertically adjustable transport base plate is mounted on the outer side of the bottom locking plate via a cylindrical frame, and wheels are mounted on the outer side of the transport base plate. This invention achieves quick disassembly and assembly between the nitrogen generator body and the frame, as well as quick separation and assembly between the frame and the transport base. The wheels are adjustable, providing both stable support and flexible transport functions. It is easy to assemble and disassemble and is suitable for various working conditions.

This utility model discloses a mobile nitrogen generator, relating to the field of nitrogen generators. The utility model includes a nitrogen generator body, with a cover shell covering the outer side of the body. Lifting mechanisms are provided on both sides of the cover shell to raise or lower it, thus controlling whether the nitrogen generator body is covered. Through the cover shell and lifting mechanisms, when the equipment needs to be stored or transported, a multi-stage electric cylinder retracts, pulling the cover shell down via a sprocket and chain drive. This causes the cover shell to descend vertically along four sets of longitudinal slide rails to a closed state, completely covering the nitrogen generator body. A tension linkage is formed under the drive of the multi-stage electric cylinder. Mining rollers at the bottom of the base plate provide movement support during transport, while the rigid fit between the slide rails and the slider further absorbs vibration and impact, reducing the risk of damage to internal components. This mechanical linkage design dynamically switches between protective and working states, balancing sealing and operational efficiency.

The utility model relates to the field of nitrogen making machines, in particular to an efficient molecular sieve adsorption type nitrogen making machine. The device comprises a reaction cylinder, and an inner cylinder is fixedly connected to the interior of the reaction cylinder. The conical filter plate in the treatment mechanism is in a big-end-down shape, impurities in gas can be effectively filtered out, the unique shape of the conical filter plate can guide the impurities to slide to the flow guide groove along the inclined face, then the impurities are collected in a centralized mode through the collecting cavity, the impurities are prevented from entering the inner cylinder to affect the performance of the molecular sieve, and the purity of gas treatment is guaranteed; the nitrogen generation efficiency and quality are improved; moreover, the driving motor drives the conical filter plate to rotate, so that the gas treatment efficiency and quality of the nitrogen making machine can be remarkably improved, the contact frequency of the surface of the conical filter plate and impurities in the gas is greatly increased in the rotating process, and the impurity intercepting effect is remarkably enhanced; and meanwhile, the impurities are promoted to move towards the edge of the filter plate and slide to the diversion trench along the inclined surface due to the centrifugal force.

This utility model relates to a multifunctional antistatic agent feeding device capable of continuous injection and precise metering, comprising: an antistatic agent dilution tank for receiving and mixing a high-viscosity first antistatic agent and a diluent to form a first antistatic agent diluted solution; a nitrogen generator connected to the antistatic agent dilution tank for bubbling and deoxygenating the first antistatic agent diluted solution; an antistatic agent feeding tank connected to the antistatic agent dilution tank for receiving the deoxygenated first antistatic agent diluted solution or directly receiving a second antistatic agent; a stirrer disposed within the antistatic agent feeding tank for maintaining solution homogeneity; and a metering pump connected to the antistatic agent feeding tank for precisely metering and delivering the antistatic agent solution to the reactor. Compared with the prior art, this utility model has advantages such as achieving precise metering and continuous feeding; multifunctional compatibility, adapting to antistatic agents with different properties; and improved reaction safety.

The invention discloses a detachable split type nitrogen making machine convenient to transfer, and relates to the technical field of nitrogen making. The detachable split type nitrogen making machine convenient to transfer comprises a base and a nitrogen making mechanism, the nitrogen making mechanism comprises a drying buffer tank and a stirring assembly, a three-way pipe is installed between the stirring assembly and an air outlet of the drying buffer tank, a nitrogen making tank is installed at the top of the stirring assembly, a connecting pipe is installed at the top of the nitrogen making tank, and the stirring assembly comprises a supporting frame; a supporting cylinder is fixedly installed at the center of the top of the supporting frame, the bottom of the nitrogen making tank and the top of the supporting cylinder are fixedly installed, a circular ring is rotationally installed in the middle of an inner cavity of the supporting cylinder, a clamping groove is formed in the outer circle face of the circular ring, and a material stirring rod is fixedly connected to the inner side face of the circular ring; and the granular molecular sieves can be stirred and are always kept dynamic, accumulation and caking are not prone to occurring, nitrogen generation is facilitated, and safety and reliability are achieved.

The invention relates to the technical field of pressure swing adsorption nitrogen making machines, in particular to a pressure swing adsorption nitrogen making machine with an oxygen-enriched tail gas recycling function, which comprises a nitrogen making structure, an inlet and outlet pipeline, a pressure applying structure, an oxygen collecting structure and a communicating vessel, the carbon powder container is filled with screening carbon powder; the two ends of the air inlet and outlet pipe are communicated with the upper ends of the two groups of adsorption tanks; the pressing structure is fixedly mounted between two ends of the air inlet-outlet pipe; the oxygen collecting structure comprises a recycling pipe; two ends of the recycling pipe are communicated with the lower edges of the side surfaces of the two groups of adsorption tanks; two ends of the communicating device are communicated with the bottoms of the two groups of adsorption tanks. According to the device, gas in the two adsorption tanks flows in a reciprocating manner through the pressure applying structure, the air is stirred, oxygen on the inner layer is effectively turned out and continuously passes through the carbon molecular sieve, the separation efficiency of oxygen and nitrogen is remarkably improved, and the content of residual oxygen in the nitrogen is reduced.

This utility model discloses a noise-reducing nitrogen generator, relating to the field of nitrogen generator technology. It includes a housing, with a noise-reducing cavity installed inside the housing. A shock-absorbing rod is installed on the inner bottom wall of the noise-reducing cavity. A support platform is installed on the top of the shock-absorbing rod, and an air compressor is installed on the top of the support platform. An air intake port is installed at the input end of the air compressor, and an air delivery pipe is installed on the top of the air compressor. A first transmission pipe is installed at one end of the air delivery pipe, and an air buffer tank is installed at the other end of the first transmission pipe. This utility model improves the strength of the housing and ensures the safety of the air compressor by installing the noise-reducing cavity and shock-absorbing rod. The noise-reducing cavity is fixed inside the housing and is used to intercept and reduce noise. The inner side of the noise-reducing cavity fixes the shock-absorbing rod, ensuring its stability. The top of the shock-absorbing rod supports the air compressor, thus mitigating vibration and reducing noise.

The utility model discloses a combined nitrogen making unit, which relates to the technical field of nitrogen making equipment and comprises a base, a nitrogen making machine body, an air compressor and a filter box are fixedly mounted at the top of the base, the nitrogen making machine body is communicated and connected with the air compressor, an air outlet is arranged at the top of the filter box, and the air compressor is communicated and connected with the air outlet of the filter box. An air inlet is formed in one side of the filter box, and sliding grooves are vertically formed in the front side and the rear side of the interior of the filter box at inclined angles; and the self-cleaning dust collecting mechanism comprises a filter screen plate, a fixing base, a lead screw, a first motor, a cleaning brush plate, a rectangular funnel, a dust discharging pipe and a dust collecting box, the filter screen plate is installed in the filter box at an inclined angle, and the filter screen plate is located between the air outlet and the air inlet. In the air compression process of nitrogen making processing, air can be well filtered, the influence of filtered and cleaned dust impurities on the filter mechanism is effectively reduced, and the overall practicability is high.

The utility model relates to nitrogen making machine technical field discloses a kind of nitrogen making machines facilitating transportation, including nitrogen making machine body, the bottom of nitrogen making machine body is provided with buffer assembly, the buffer assembly is detachably installed at the bottom of nitrogen making machine body, to adapt uneven ground in the transfer process of nitrogen making machine body, the outside of nitrogen making machine body is provided with protection assembly, and protection effect is played to nitrogen making machine body in the transfer process.The nitrogen making machine facilitating transportation, when nitrogen making machine body needs to be transferred and transported, bolt is connected, mounting seat can be fixed in the bottom of support frame, so that the moving wheel on mounting seat is also installed in the bottom of support frame, nitrogen making machine body can be transferred by moving wheel, avoid the inconvenience brought by hoisting nitrogen making machine body, when nitrogen making machine body moves to uneven ground, damping shaft moves in damping cylinder, at the same time, buffer spring is compressed, to adapt uneven ground.