8results about How to "Guaranteed oxygen concentration" patented technology

The invention belongs to the technical field of medical materials, and particularly provides a 3D printing bone repair material and a preparation method thereof.The 3D printing bone repair material is prepared from PCL / MnO2 composite microspheres and SiN, PCL has good biocompatibility and biodegradability, the mechanical performance and bone induction performance of the 3D printing bone repair material are enhanced due to addition of SiN, and the 3D printing bone repair material has a good application prospect. MnO2 can release oxygen and manganese ions, and the manganese ions can promote calcium deposition, jointly promote cell infiltration, osteogenic differentiation and matrix mineralization, promote bone precursor cell proliferation, accelerate bone defect repair and promote bone regeneration, so that the bone regeneration rate is increased, and the bone regeneration rate is increased. The prepared 3D printing bone repair material has good mechanical performance, biocompatibility, antibacterial property and biodegradability, cell proliferation is promoted, and bone repair and bone regeneration are accelerated.

The invention relates to the technical field of waste resource utilization, and discloses a coupling type system and method for preparing copper powder through kitchen waste gasification-hydro-thermal synthesis, and a coupling reaction device in the system comprises a supercritical water gasification module and a supercritical hydro-thermal synthesis module which are sequentially arranged in a sleeving mode from outside to inside; a palladium membrane is arranged between the supercritical water gasification module and the supercritical hydrothermal synthesis module; the outer side wall of the supercritical water gasification module is coated with a heating unit; according to the invention, a supercritical water gasification reactor and a supercritical hydrothermal synthesis reactor are integrated together through a sleeve structure; pure hydrogen is separated from gasification products in the supercritical water gasification module through a palladium membrane, an expensive chemical reducing agent is replaced, effective utilization of kitchen waste slurry is effectively improved, and the utilization rate of conversion from waste to resources is achieved. And meanwhile, pure hydrogen is separated by using a palladium membrane and enters a supercritical hydrothermal synthesis module, so that introduction of impurities is avoided, and preparation of high-purity superfine copper powder can be realized.

The utility model discloses a dispersion oxygen generator and system, which comprises a power supply unit, a control unit connected with the power supply unit, an oxygen generation unit and a compressor, the compressor extracts gas through a gas taking unit and provides pressure gas; and the oxygen generation unit is used for receiving the pressure gas to prepare oxygen and dispersing the oxygen into the aerobic space. According to the technical scheme, gas is completely or partially extracted from the aerobic space at the same time, so that circulating gas exchange in the aerobic space is ensured, harmful gas such as carbon dioxide is prevented from being accumulated, in addition, the oxygen concentration in the aerobic space is prevented from being continuously accumulated and increased, and the oxygen concentration in the aerobic space is within a safe interval.

The utility model discloses an oxygen-enriched air supply device in an automobile, which comprises an oxygen-enriched membrane component, the air outlet end of the oxygen-enriched membrane component is connected with a negative pressure pump, the air outlet end of the negative pressure pump is connected with an exhaust mechanism, one side of the oxygen-enriched membrane component is provided with a monitoring control mechanism, and the oxygen-enriched membrane component comprises an air outlet seat. A fan is connected to the end of the air outlet seat, an air outlet is formed in the other end of the air outlet seat, a plurality of vertical adjusting air plates are rotatably connected to the interior of the air outlet seat, and first rotating shafts are fixedly connected to one ends of the vertical adjusting air plates. According to the oxygen-enriched air supply device in the automobile, oxygen-enriched air is generated through the oxygen-enriched membrane assembly, the first motor drives the vertical adjusting air plate to rotate for vertical adjustment, the second motor drives the transverse adjusting air plate to rotate for transverse adjustment, the oxygen-enriched air is blown to a driver, the oxygen concentration in the automobile is effectively improved, and driving fatigue is relieved.

The invention belongs to the technical field of medical equipment, and particularly relates to an oxygen inhalation mask. Comprising an outer-layer mask body and an inner-layer mask body, the inner-layer mask body is located on the inner side of the outer-layer mask body, and an oxygen temporary storage space is formed between the inner-layer mask body and the outer-layer mask body; an oxygen inlet is formed in the outer-layer mask body, the oxygen inlet is used for being connected with an oxygen generator, a telescopic jacket is arranged on the inner side of the inner-layer mask body, the telescopic jacket is communicated with the oxygen temporary storage space, and the oxygen inlet is also communicated with the oxygen temporary storage space; a ventilation assembly is arranged on the inner side of the inner-layer mask body, one end of the ventilation assembly communicates with the oxygen temporary storage space, and the other end of the ventilation assembly is used for being placed in the nasal cavity of the human body. And a waste gas port is formed in the inner-layer cover body and / or the outer-layer cover body. Oxygen can be directly fed into the nasal cavity of the human body, the human body can easily inhale sufficient oxygen, and the oxygen concentration provided by the oxygen inhalation mask can be guaranteed.

This application belongs to the technical field of medical devices and discloses an airflow switching rotary valve and an oxygen generator. The airflow switching rotary valve includes a mounting base and a moving valve core. The mounting base has a distribution chamber and an air inlet communicating with the distribution chamber. The moving valve core is located inside the distribution chamber and has a moving plate sealing surface. The moving plate sealing surface is provided with an exhaust chamber. The moving valve core is provided with an air inlet channel located on the side of the exhaust chamber. The outer peripheral surface of the moving valve core is provided with multiple contact positions. The contact positions contact the cavity wall of the distribution chamber to restrict the relative movement of the moving valve core with the mounting base in its own radial direction and to restrict the deflection of the moving valve core in its own axial direction. This ensures the sealing performance between the moving valve core and the stationary valve core and reduces the manufacturing cost of the airflow switching rotary valve.

The utility model provides a water quality blending device for fry culture, including culture pond, dosing mechanism, control subassembly, sensing subassembly and aeration mechanism, control subassembly is provided below dosing mechanism, culture pond is provided below control subassembly, sensing subassembly is provided on the inner wall of culture pond, and aeration mechanism is provided on the inner wall of culture pond. The control panel is arranged on the outer wall of the culture pond and electrically connected with the sensing assembly, the aeration mechanism, the electric sliding table and the electromagnetic plate, the control assembly can select any one or more groups of agent bottles to conduct agent feeding at the same time according to the problem fed back by the sensing assembly, automatic agent feeding is achieved, and blending of the culture pond is achieved; therefore, the pH value and dissolved oxygen of the water body are adjusted, ammonia nitrogen and residual chlorine are removed, the aquaculture water body is stable, and a proper aquaculture water quality environment is provided.

The utility model discloses a catalytic burner for organic matters in a solar photovoltaic panel, which comprises a bottom plate, and the top of the bottom plate is fixedly connected with a pyrolyzing furnace body; the oxygen limiting mechanism comprises a nitrogen cylinder, a barometer, an air supply pipe, an air inlet assembly and an air outlet assembly; the nitrogen cylinder is fixed to the bottom plate, the barometer is fixed to a gas outlet of the nitrogen cylinder, one end of the gas supply pipe is fixedly connected with the end of the nitrogen cylinder, the other end of the gas supply pipe penetrates through the side wall of the pyrolyzing furnace body and is fixedly connected with the pyrolyzing furnace body, and the gas inlet assembly is fixed to one side of the lower end of the side wall of the pyrolyzing furnace body. And the gas outlet assembly is fixed on the other side of the lower end of the side wall of the pyrolyzing furnace body. The oxygen concentration in the pyrolyzing furnace body is kept in an anoxic state all the time, organic matter is decomposed and combusted to generate carbon black, combustible gas can be collected, and meanwhile poisonous gas is prevented from leaking into air.