6results about How to "Guaranteed oxygen content" patented technology

This utility model relates to the field of leachate treatment technology, specifically to an integrated anaerobic and aerobic treatment device for landfill leachate. It includes a treatment frame, with a partition plate fixedly connected inside the frame. Two anaerobic packing materials are arranged on one side of the partition plate, and two aerobic packing materials are arranged on the other side. A fixed pipe connects to the top of the treatment frame, and an adjusting mechanism and an adjusting mechanism are arranged inside the frame. In this utility model, a rotating pipe is rotatably connected to the fixed plate, allowing the rotating pipe to rotate relative to the fixed plate. This causes the conveying frame and the air outlet to rotate within the treatment frame. The leachate is then conveyed through the conveying frame to the bottom of the two anaerobic packing materials, ensuring sufficient contact between the leachate and the entire interior of the packing materials. This facilitates anaerobic treatment of the leachate and allows for more uniform mixing of air within the leachate, thus maintaining the oxygen content of the leachate in the aerobic zone.

The purpose of this invention is to provide an aircraft air conditioning system that can increase the oxygen content of cabin air and reduce the amount of bleed air from the power unit. The aircraft air conditioning system of this invention includes: an air separator that separates oxygen and nitrogen from the bleed air from the power unit to form an oxygen-enriched gas with an oxygen concentration higher than that in the bleed air and a nitrogen-enriched gas with a nitrogen concentration higher than that in the bleed air; and an air mixing chamber connected to the air separator, wherein the oxygen-enriched gas formed in the air separator is supplied to the air mixing chamber, and the oxygen-enriched gas is mixed with secondary air in the aircraft cabin in the air mixing chamber, and the mixed gas is supplied to the aircraft cabin.

The utility model provides a feeding device for acrylate emulsion polymerization, which belongs to the technical field of emulsion polymerization feeding and comprises a feeding tank. The tank cover is arranged at the top of the feeding tank; the feeding hopper and the nitrogen inlet pipe are arranged on the top of the tank cover, and the feeding hopper is located on one side of the nitrogen inlet pipe; the discharging valve is arranged at the bottom of the feeding tank; the nitrogen and oxygen replacement assembly is arranged in the feeding tank; the nitrogen and oxygen replacement assembly comprises a buoyancy lifting disc arranged in the feeding tank and a nitrogen and oxygen replacement assembly arranged in the feeding tank, the U-shaped pipe is arranged in the center of the top of the buoyancy lifting disc; the oxygen discharge straight pipe is arranged at one end of the U-shaped pipe; according to the utility model, nitrogen and oxygen in the feeding tank are replaced, so that the content of the oxygen in the feeding tank is ensured, the oxygen is prevented from entering the polymerization kettle along with a reagent, and the damage of molecular chains caused by oxidation reaction of acrylate emulsion in the polymerization kettle is avoided.

This utility model discloses a hot air circulating oxidation pellet roasting device, belonging to the field of metallurgical pelleting technology. Its key technical features include a base plate, a roasting kiln furnace bolted to the left side of the top of the base plate, an air inlet at the bottom of the roasting kiln furnace, an oxygen content adaptive hot air circulation mechanism at the top of the roasting kiln furnace, and a steam power generation component on the right side of the top of the base plate. The oxygen content adaptive hot air circulation mechanism includes a high-temperature exhaust fan, the bottom of which is bolted to the top of the roasting kiln furnace. This invention solves the problem that existing hot air circulation devices may experience pressure imbalance or oxygen content reduction when directly recovering and utilizing hot air, leading to poor oxygen air supply and circulation, resulting in substandard pellet roasting and oxidation quality. Furthermore, some devices, while directly recovering and utilizing hot air, fail to optimize energy recovery and utilization.

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 invention discloses an air heat exchange system of an efficient copper dissolving tank and a using method.The air heat exchange system comprises the copper dissolving tank and a dirty liquid tank which are connected through a pipeline, the air heat exchange system further comprises a heat exchanger, a first medium inlet of the heat exchanger is communicated with the top of the copper dissolving tank through a vortex flow meter and a pneumatic control valve, and a second medium inlet of the heat exchanger is communicated with a second medium inlet of the heat exchanger; a first medium outlet of the heat exchanger is communicated with an acid mist tower through an induced draft fan, a heat exchange pipeline communicated with outside air is arranged in the dirty liquid tank, and the heat exchange pipeline is communicated with a second medium inlet of the heat exchanger at the same time. And a second medium outlet of the heat exchanger is communicated with a hot air pipe in the copper dissolving tank through a pipeline. The problems that an existing copper dissolving liquid preparation system is insufficient in air volume control precision, the temperature of a copper dissolving tank is prone to being reduced, heat loss is serious, and the oxygen content cannot be quantitatively controlled can be solved.