9results about How to "Attached tightly" patented technology

This invention relates to the field of chlor-alkali electrolysis equipment, and more particularly to an assembly of independent unit bipolar ion-exchange membrane electrolyzers, comprising an assembly frame and multiple fixed frames. The assembly frame supports the fixed frames, and independent unit electrolyzers are mounted on the inner sides of each fixed frame via fixing bolts. Each independent unit electrolyzer includes a frame, with a composite plate fixedly connected to the center of the frame. The composite plate separates the cathode chamber and the anode chamber on both sides of the frame. Anode ribs are fixedly connected to the interior of each anode chamber, and an anode mesh is installed at the end of each anode rib away from the composite plate. This invention creates forced disturbance to the solution inside the anode chamber during continuous replenishment of refined brine, significantly improving solution mixing and flow efficiency, allowing the brine to fully contact the electrodes, and enhancing the completeness of the electrolysis reaction. Compared to traditional passive flow methods, the solution circulation effect is significantly improved.

This invention relates to the field of biomaterials technology, providing a composite material for biomimetic repair of dental hard tissues, its preparation method, and its application. The preparation method of the composite material includes the following steps: mixing a carboxybetaine-phosphonic acid copolymer with a calcium salt to obtain solution A; adding an aqueous phosphate solution to solution A to carry out an in-situ reaction to obtain the composite material for biomimetic repair of dental hard tissues. In the composite material provided by this application, the carboxybetaine-phosphonic acid copolymer, under the action of calcium phosphate ions, can form an amelogenin-like nanoribbon structure, simultaneously driving amorphous calcium phosphate to undergo supramolecular self-assembly, constructing a composite material conforming to the "self-assembly-mineralization" synergistic mode. This composite material can directionally deposit dense enamel-like enamel pillar structures of hydroxyapatite crystals on the surface of demineralized enamel, efficiently inducing oriented structural regeneration of damaged enamel and significantly restoring the mechanical properties of demineralized enamel.

The application relates to the technical field of composite material preparation, in particular to a metallurgical bonding nickel-coated copper rod and wire manufacturing method, which comprises the following steps of: copper core preparation, stirring T1 oxygen-free copper powder and borax adhesive, extruding and polishing to complete copper core preparation; shell preparation, selecting a nickel rod to cut and process into a nickel shell and a nickel back cover; smelting treatment, preparing a reinforcing agent, cleaning the inside of the nickel shell, smearing the reinforcing agent, putting the copper core into the nickel shell, and sending the nickel shell into a vacuum smelting furnace for sealed smelting treatment. In the application, various components in the reinforcing agent are mutually synergistic and mutually promoting, a dense metallurgical bonding layer is formed on the bonding interface of the nickel-coated copper rod, the atomic arrangement of the bonding layer is close and orderly, the bonding strength between copper and nickel is greatly enhanced, and the two kinds of metals are no longer simply mechanically bonded, but are firmly metallurgically bonded through mutual diffusion and chemical bonding between atoms.

The application discloses a turbine guide vane end wall cascade channel type assembly gap structure based on a transverse pressure gradient and belongs to the field of gas turbine turbine end wall cooling. The assembly gap is a cascade channel type structure with consistent axial cross section configurations, the pressure side wall surface is similar to the blade pressure surface profile, the suction side wall surface is similar to the blade suction surface profile, and the pressure side wall surface and the suction side wall surface jointly form a flow channel capable of generating a stable transverse pressure gradient; a leakage hole is formed in the seal piece. The seal cooling gas entering the gap from the leakage hole is actively regulated by the transverse pressure gradient, so that the seal cooling gas orderly migrates from the pressure side to the suction side and flows close to the wall surface, and the adiabatic temperature distribution in the gap and the gas film coverage of the suction side wall surface are significantly improved. Meanwhile, the leakage flow and the end wall gas film hole cooling gas synergistically act, the cooling effect and uniformity of the downstream surface of the end wall are enhanced, the net heat flux reduction amount is significantly improved, the mixing loss is reduced to a certain extent, and a good balance between efficient and uniform cooling and low aerodynamic loss is achieved.

The application relates to the technical field of radio frequency microwave transmission lines, in particular to a radio frequency coaxial cable with high temperature phase stability and low loss and a preparation method thereof, which comprises an inner conductor, a dielectric body, an outer conductor, an intermediate body, an outer shielding body and a sheath; the cross section of the dielectric body is in lotus core structure, the lotus core structure comprises an inner conductor wrapping layer, an outer conductor supporting layer concentrically arranged outside the inner conductor wrapping layer, and a plurality of reinforcing ribs are arranged at equal angles along the center of the inner conductor wrapping layer and the outer conductor supporting layer; and the reinforcing ribs, the inner conductor wrapping layer and the outer conductor supporting layer form fan-shaped through holes therebetween. The application solves the problem that the phase stability, transmission loss and mechanical phase of the radio frequency cable in the prior art cannot be considered simultaneously.

The utility model discloses a handle winding belt, which belongs to the field of handle winding belts, is used for being wound on holding parts such as a handle or a handle, and solves the technical problems that the handle winding belt cannot be repeatedly used and is not easy to assemble and disassemble, and a winding structure is easy to loosen. The utility model relates to a winding belt which comprises a winding belt, the winding belt is a spiral elastic body, the winding belt is wound on a grip, the grip is sleeved with an inner elastic fixing ring, the winding belt wraps the inner elastic fixing ring, and the inner elastic fixing ring and the winding belt are fixed through a hook-and-loop fastener.

The utility model relates to the technical field of packaging box surface labeling, and provides a packaging box surface labeling device which comprises a working table, a working box is fixedly connected to the top of the working table, a conveying belt is arranged at the top of the working table, a labeling assembly is arranged in the working box, and a positioning mechanism is arranged in the working box. According to the packaging box labeling device, when the surface of a packaging box needs to be labeled, a worker places the packaging box on the top of the conveying belt, the packaging box is conveyed into the working box through the conveying belt, at the moment, the worker starts a motor, a stress rod is stressed to enter a hydraulic cylinder, and at the moment, the hydraulic rod extends outwards; the hydraulic rod moves to drive the positioning plate to move, the positioning plate moves to push and position the packaging box on the top of the conveying belt, at the moment, the surface of the packaging box is accurately labeled through the labeling assembly, and through the technical scheme, the problem that in the prior art, the packaging box cannot be positioned is solved.

This utility model belongs to the field of edge-wrapping equipment and provides a fully automatic edge-wrapping device, including: a frame equipped with a support platform for placing the packaging film to be wrapped; a heating mechanism mounted on the frame, which can be moved closer to or further away from the support platform to ensure the heated packaging film adheres tightly to the product; a pressing mechanism and several auxiliary mechanisms, with the pressing mechanism movably positioned above the support platform. Compared with the prior art, the advantages of this utility model are that by heating the packaging film to adhere more tightly to the product surface, and with the pressing mechanism pressing the product onto the packaging film, while the peripherally distributed auxiliary blocks push the edge of the packaging film towards the side wall of the product, a uniform and wrinkle-free edge-wrapping effect is achieved. The entire edge-wrapping process requires no manual intervention, improving production efficiency, reducing labor costs, and ensuring the consistency and aesthetics of the packaging film when wrapped on the product, making it suitable for continuous industrial production.

This invention belongs to the field of water treatment denitrification technology, specifically relating to a strain-piezoelectric material synergistic denitrification system and its application. This strain-piezoelectric material synergistic denitrification system includes *Streptomyces* denitrifying bacteria and barium strontium titanate, with the barium strontium titanate loaded on the surface of the *Streptomyces* denitrifying bacteria. This invention induces a piezoelectric effect in the barium strontium titanate through mechanical feeding, providing an electron donor for the *Streptomyces* denitrifying bacteria, thus improving electron transfer efficiency and consequently increasing denitrification efficiency. Experiments show that under optimal conditions of 0.5 g / L barium strontium titanate concentration and 400 r / min stirring speed, the total nitrogen and nitrate nitrogen removal rates of this system are higher than those of strain DD alone, while the total organic carbon removal rate is also significantly improved.