47results about How to "Improve maximum utilization" patented technology

The invention discloses a dining table stable in structure and convenient to fold and store. The dining table comprises a first table plate, wherein the side face of the first table plate is fixedly connected with a second table plate through hinges, the bottom of the first table plate is fixedly connected with an adjusting box, the top of the inner wall of the adjusting box is fixedly connected with an upper top plate, the bottom of the inner wall of the adjusting box is fixedly connected with a lower bottom plate, the bottom of the upper top plate and the top of the lower bottom plate are both provided with round grooves, steel balls are movably connected in the round grooves, the inside of the adjusting box is movably connected with a turntable, the steel balls are movably connected tothe outer surface of the turntable, and the side face of the turntable is fixedly connected with a fixing plate. The dining table is stable in structure and convenient to fold and store can have a folding function by arranging the first table plate, the second table plate and the adjusting box and can be folded and stored when being not used, the space can be utilized to the most degree, and the dining table can also be convenient to move and use after being folded and stored.

The invention provides a device for changing a waste roller into a shared umbrella placement vehicle and a manufacturing method. The device for changing the waste roller into the shared umbrella placement vehicle comprises two side edge fixing plates, a cover plate fixedly mounted at the tops of the two side edge fixing plates, a reinforcing plate fixedly mounted on the sides, close to each other,of the two side edge fixing plates, a first screw rod rotationally mounted on the cover plate and the reinforcing plate and a movable plate installed on the first screw rod in a threaded mode, and the two sides of the movable plate are connected with the sides, close to each other, of the two side edge fixing plates in a sliding mode correspondingly. The device for changing the waste roller intothe shared umbrella placement vehicle and the manufacturing method have the advantages that time is saved, production efficiency is improved, production cost is reduced, and waste can be recycled.

The invention relates to an aerodynamic engine assembly, which belongs to the technical field of aerodynamics and comprises an engine shell, a bottom shell, a cylinder body, a cylinder cover, a crankshaft, a flywheel, a clutch and a speed changing box. A valve component is disposed on the cylinder cover, the cylinder cover is provided with an air inlet channel and an air exhaust channel, the air inlet channel and the air exhaust channel are connected with an air inlet header pipe and an air exhaust header pipe, a high-pressure air inlet channel is further disposed on the cylinder cover, a one-way valve is disposed in the high-pressure air inlet channel, and the high-pressure air inlet channel is connected with a high-pressure controller via a high-pressure air source controlling device. The aerodynamic engine assembly is characterized in that a turbocharger is mounted between the air inlet header pipe and the air exhaust header pipe, an air inlet end of the turbocharger is connected with the atmosphere, the turbocharger is connected with a power generator, the power generator is connected with a storage battery, and a turbine generator set which is in step layout is mounted on a tail gas exhaust tube of the turbocharger and is connected with the storage battery. In conclusion, the aerodynamic engine assembly has the advantages of simple structure, reasonable design, capabilities of controlling high-pressure air sources to supply air uniformly, supplementing air pressure loss and saving energy, and the like.

The invention belongs to the technical field of oil field acidizing equipment, and in particular relates to a combined layered acidizing device for oilfield water injection wells, which includes several acidizing units detachably connected; the acidizing unit includes an outer pipe and an inner pipe, and the inner pipe is coaxially sleeved inside the outer pipe The acidizing liquid injection pipe is arranged in the cavity left between the outer pipe and the inner pipe; the nozzle, whose liquid inlet end is connected with the acidizing liquid injection pipe, and the liquid outlet end is inlaid on the outer pipe wall; the ring connection The lower end of the inner tube is exposed to the outside of the cavity, and the connecting plate is in sealing connection with the bottom of the cavity; the telescopic positioning component and the joint component are installed on the outer periphery of the lower end of the inner tube and are located under the connecting plate. The present invention sets several detachably connected acidizing units for positioning at different formation heights in sand control pipes in oil field water injection wells. They can be connected or used in discrete distribution, and have a blocking effect on sand control pipes of different formation heights, with strong pertinence and high efficiency. High, can also save acidizing fluid.

The invention provides a gas stove waste heat recycling method. The method comprises the following steps that (1), a combustor assembly is established, specifically, the combustor assembly comprises a combustor and a supporting ring, the combustor and the supporting ring can be integrated to a gas stove, the bottom of the combustor is provided with an air outlet, and thus a combustion area for igniting the gas-air mixed gas is formed; (2), two different heat exchangers are established so that heat exchange medium fluid can pass through the two heat exchanger assemblies in sequence, and heat recovery of the heat exchange fluid is achieved twice; (3), a connection control pipeline assembly is arranged, the flowing path of the heat exchange medium fluid is controlled through two three-way control valves, and the fluid can selectively pass through or not pass through one or two of the above two heat exchangers. By means of the method, multi-grade adjustment of heat recycling is performed according to actual requirements, and energy conservation performance of the gas stove in use is improved. Meanwhile, the invention furthermore discloses a gas stove waste heat recycling device applying the method.

The invention discloses a copper mine raffinate treatment method. The copper mine raffinate treatment method includes steps: (1) adding iron powder into copper mine raffinate to realize copper recovery and acquisition of iron-containing waste liquid; (2) adding sodium hydrosulfide or sodium sulfide into the iron-containing waste liquid to realize deep removal of harmful elements and acquisition of aftertreatment liquid; (3) adding aluminium hydroxide, calcium hydroxide or sodium hydroxide into the aftertreatment liquid to realize catalytic oxidation, hydrolysis and polymerization to obtain an oxidation product; (4) subjecting the oxidation product to ageing, and drying to obtain a qualified solid polymeric ferric sulfate product. The iron powder is taken as a raw material for copper recovery pretreatment of the raffinate, then the sodium sulfide or the sodium hydrosulfide is added for deeply removing the harmful elements such as copper, arsenic, cadmium and chromium, and the treated iron-containing liquid is subjected to catalytic oxidation, hydrolysis, polymerization and ageing to obtain the qualified polymeric ferric sulfate which is a water treatment agent.