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67results about How to "Flexible size change" patented technology

Water treatment system in two-stage moving bed biomembrane reactor

The invention belongs to the field of water treatment, and relates to a two-stage moving bed biomembrane reactor medium water treatment system. The two-stage moving bed biomembrane reactor medium water treatment system is characterized in that the whole process adopts a programmable PLC automatic control system; the main treatment structure is two-stage cascade connected moving bed biomembrane reactors; and the concrete process flow is as follows: domestic sewage or sewage with similar water quality enters a regulating pond through grates and then enters a first-stage MBBR reactor and a second-stage MBBR reactor in turn by pump lifting; and then the water is outputted into a depositing pond, enters a clear water pond and is reused for flushing toilet or as landscape water after cyclic ultraviolet sterilization. The two-stage moving bed biomembrane reactor medium water treatment system has the advantages that: 1 the system has good medium water treatment effects, stronger resistance to shock load and stable outputted water quality; 2 the system has simple and convenient operating management, a small floor area, convenient maintenance and little excessive sludge; and the system adopts the PLC automatic control system with high automatic degree; 3 the system adopts a mechanical aeration mode, thereby bringing about low energy consumption and good oxygenation performance without an independent blower; 4 the system adopts a cyclic ultraviolet sterilization mode without any medicament added during the whole process, thereby avoiding the secondary pollution; and 5 the system has a wide application range.
Owner:UNIV OF SCI & TECH BEIJING

Miniaturized bifunctional line electrode grinding device

The invention discloses a miniaturized bifunctional line electrode grinding device. A motor assembly, a wire winding wheel, a wire discharging wheel, a damper and a damping fin in the line electrode grinding device are arranged on a bottom supporting plate, and a left grinding head, a right grinding head, a shock absorber, a guide wheel and a transition wheel are arranged on a vertical supporting plate. An electrode wire is wound on the left grinding head and the right grinding head after being led out by the wire discharging wheel and passing through a middle transition device and then passes through corresponding transition devices, and finally, wire winding is realized by the wire winding wheel, so that the whole wire moving process is finished. The motor assembly drives the wire winding wheel to rotate to realize the wire moving function of the electrode wire. All the devices provided by the invention are arranged reasonably, the device can be miniaturized and lightened, and the dynamic characteristic of a workbench can be improved. The spatial size of an electric discharge machining region arranged between the left grinding head and the right grinding head provided by the invention can be flexibly adjusted, the machining requirements of a microarray tool electrode and a non-microarray tool electrode can be met, and the function of a micro-electric machining system is remarkably expanded.
Owner:INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS

Continuous processing method for diffuser plate with surface microstructure

The invention relates to a continuous processing method for a diffuser plate with a surface microstructure and belongs to the field of continuous pressing. A microstructure is formed on the diffuser plate. After the diffuser plate is pressed, the microstructure on a mould is precisely copied onto the diffuser plate and a light source is uniformly scattered after passing through the diffuser plate, namely after the light source enters into the diffuser plate, the diffuser plate can homogenize the light source under the effect of the scattering of the microstructure. Two devices are used for realizing the continuous processing of the diffuser plate. In a first scheme, the device is composed of upper and lower moulds, a motor, a screw rod, and the like, wherein the screw rod is used for controlling the opening/closing and the left and right moving of the moulds. The first scheme has the advantage of stable and precise motion. In a second scheme, the device is composed of upper and lower moulds, a cylinder, a connecting rod, a rail, a sliding block, and the like, wherein the cylinder is used for pushing the connecting rod to control the upper mould to move up and down so as to finish the mould opening/closing operation, and the sliding block slides on the rail so as to move the moulds left and right. The second scheme has the advantages that the structure is simple, the operation is flexible and the cost is low.
Owner:BEIJING UNIV OF CHEM TECH

Flexible production line for refrigerator shell

The invention discloses a flexible production line for a refrigerator shell. A feeding machine, a punching machine, a 180-degree overturning machine, a flexible bending machine, a condenser attachingbelt conveying line, Z-shaped and L-shaped bending machines, a U-shaped bending machine and a discharging manipulator are arranged on the production line sequentially, wherein the flexible bending machine comprises a base, a conveying table and two shoulder seats, the conveying table is arranged on the base, the two shoulder seats are symmetrically arranged on two sides of the conveying table, andmaterial supporting frames, material pressing frames and bending frames are arranged on the shoulder seats. The material supporting frames are fixed to the side surfaces of the shoulder seats, supporting planes are arranged on the material supporting frames, the supporting planes correspond to the conveying surface of the conveying table, the material pressing frames can move up and down relativeto the shoulder seats, pressing planes are arranged below the material pressing frames, the pressing planes correspond to the supporting planes up and down, the bending frames are positioned on the side edges, facing away from the conveying table, of the material supporting frames, the bending frames can move up and down or move in the width direction of the shoulder seats, and bending convex edges are arranged on the bending frames. The flexible production line for the refrigerator shell can machine the refrigerator shell with different structures.
Owner:CHINA NAT ELECTRIC APP RES INST +1

Magnetic field assisted chemical etching device and method

The invention provides a magnetic field assisted chemical etching method. The method includes the following steps: S1, performing gluing and photo etching processing on a semiconductor material so that a to-be-etched material can be obtained; and S2, putting the to-be-etched material into an etching liquid, and performing etching under a magnetic field with the intensity being 1 kOe - 2 kOe. A magnetic field assisted chemical etching device is also provided. The device includes a solution bottle and a magnetic field excitation device; the solution bottle is used for accommodating the etching liquid and the to-be-etched material; and the magnetic field excitation device is arranged at the external of the solution bottle and used for providing a stable magnetic field. Through the addition ofconventional chemical etching and the magnetic field, anions and cations in the etching solution can move along a certain direction, so that directional etching can be realized, damages to the side surfaces of retained graphics can be reduced, the moving ions can be accelerated, and etching rates can be enhanced; and the method is simple in operation, low in cost and wide in application range, and can realize the directional chemical etching of all common semiconductor chips at the present stage.
Owner:SUZHOU JUZHEN PHOTOELECTRIC

Screening device for wear-resisting ball machining

InactiveCN111330833AFlexible Mesh SizeChange mesh sizeSievingScreeningScreens (device)Structural engineering
The invention discloses a screening device for wear-resisting ball machining, and relates to the technical field of wear-resisting ball production. The screening device for wear-resisting ball machining comprises an inner roller screen and an outer roller screen; the inner surface of the inner roller screen is fixedly connected with a transmission shaft through a connecting rod; first screen holesare arrayed in the peripheral side surface of the inner roller screen; external threads are arranged on the peripheral side of the transmission shaft; the inner surfaces of the two ends of the outerroller screen are fixedly connected with a first connecting sleeve and a second connecting sleeve through connecting rods correspondingly; and the first connecting sleeve is connected with the transmission shaft through an adjusting sleeve. According to the screening device for wear-resisting ball machining, the inner roller screen and the outer roller screen which can be in sliding fit with eachother are arranged, and the size of a screen mesh is changed through utilizing mutual dislocation between the first screen holes and second screen holes, so that the problems that screen equipment cannot adapt to screening of multi-size wear-resisting balls and consequently is poor in adaptability are solved; and meanwhile, through mutual dislocation adjustment between the first screen holes and the second screen holes, the wear-resisting balls clamped in the screen holes can be effectively removed, and the problems that the production efficiency and the production cost are influenced due to the fact that manual cleaning is needed can be solved.
Owner:合肥新士鑫机械科技有限公司

Textured silicon carbide whisker toughened alumina-based ceramic, preparation method and application thereof

The invention belongs to the field of composite gradient ceramics, and discloses textured silicon carbide whisker toughened alumina-based ceramic, a preparation method and application thereof. The alumina-based ceramic is prepared by the following steps of: taking alumina, silicon carbide whiskers and a sintering aid MgO or Y2O3 as the raw materials, and adopting paraffin as a structural aid, mixing the raw materials to obtain mixed powder, dispersing the mixed powder into liquid hot paraffin, performing casting and cooling to obtain a casting, extruding the casting at normal temperature to realize texturing, and removing paraffin at high temperature to obtain a green body, and axially pressurizing the green body to 20-50MPa, performing heating to 1500-1800DEG C, and conducting sintering.According to the method, preparation of the textured alumina-based ceramic with the silicon carbide whiskers arranged in the radial direction is achieved, the textured alumina-based ceramic has high abrasion resistance and heat conductivity on a friction surface, the cutting temperature can be reduced when heat-resisting alloy and high-hardness metal materials are machined at a high speed, and thetextured alumina-based ceramic has higher stability, compared with common ceramic cutters in the market, the ceramic cutter made of the textured silicon carbide whisker toughened alumina-based ceramic has obvious application advantages.
Owner:GUANGDONG UNIV OF TECH

Air-cooled cylindrical power battery pack containing bionic surface microstructure heat dissipation piece

ActiveCN112038727AFlexible size changeEnhance heat transfer efficiencySecondary cellsPower batteryEngineering
The invention discloses an air-cooled cylindrical power battery pack containing a bionic surface microstructureheat dissipation piece, and belongs to the technical field of power battery thermal management. The battery pack mainly comprises a fan, a shell, an insulating fixing frame, the bionic surface microstructure heat dissipation piece and a cylindrical power battery, wherein the outer side ofthe curved surface of the bionic surface microstructure heat dissipation piece is in contact with the surface of the battery, and the inner side of the curved surface is provided with a bionic surface microstructure. The cylindrical power battery is axially arranged, and when the fan drives the cooling air flow to enter the battery pack, the bionic surface microstructure heat dissipation piece can improve the heat exchange efficiency between the cooling air flow and the battery. The insulating fixing frame is arranged between each row of batteries and plays a role in supporting and insulating. On the basis of traditional axial air cooling, the bionic surface microstructure heat dissipation piece is added, the size and the structure of the battery pack are not changed, and the battery packhas the advantages of being convenient to install, simple in structure, enhanced in heat dissipation effect and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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