12results about How to "Guaranteed diffusion" patented technology

The invention discloses equipment for realizing modularized soil in-situ injection remediation by adopting a digital control system. The equipment comprises a carrier and an injection mechanism arranged on the carrier, the injection mechanism can be used for injecting medicaments into the deep underground soil for remediation; in the remediation process, a second sleeve in the injection mechanism can be rotated to be matched with the pushing mechanism to loosen the compacted soil outside the channel drilled by the drill bit, the agent spraying area is enlarged, and diffusion of the agent and fusion of the agent and the soil can be accelerated; meanwhile, the first sleeve can protect the second through hole from being blocked and keep smooth medicament injection, single-hole continuous dynamic fixed-depth injection is adopted, medicament adding parameters are controlled and optimized, and medicament injection parameters can be accurately controlled; the problem of repairing the sandwich layer is solved in a small-caliber bottom-to-top injection mode, meanwhile, the advantage of maintaining the bearing capacity of the foundation after construction is achieved, and the diffusion and injection effects of the medicament can be guaranteed by designing air and medicament nozzles and drilling tools.

The utility model discloses an induction heating type chip welding device, and relates to the technical field of chip welding. The device comprises a tool jig, wherein the tool jig is fixedly connected with a supporting rod for placing a chip through a placing cavity formed in the tool jig; the welding part comprises two hot-pressing seats, the two hot-pressing seats are symmetrically distributed by taking the tool jig as a center, one end, close to the tool jig, of each hot-pressing seat is fixedly connected with a heat conduction block, and a heat insulation plate is fixedly mounted on the outer surface of each hot-pressing seat. The utility model can effectively solve the problems in the prior art that no definite time sequence control exists in the heating and pressure applying process, the heating block starts to dissipate heat when approaching the chip, so that the welding flux is melted in advance when the pressure is not applied, the welding flux is oxidized, sheetted or bridged, and if the pressure is firstly applied and then the heating is performed, the welding flux cannot be heated. And the problem that the chip packaging material is deformed due to overlong pressure duration time is solved.

The utility model discloses a pole holding box for power failure detection in the technical field of pole holding boxes, which comprises a heat dissipation outer box and a dirt separation plate, the front surface of the heat dissipation outer box is rotatably connected with a box door flow guide hole through a hinge, and the top surface of the heat dissipation outer box is fixedly connected with a gas transmission top cover; whether a circuit is powered off or not can be detected in time through the circuit monitor switch, an alarm is given out, timely maintenance is facilitated, meanwhile, the gas can enter the gap between the heat dissipation outer box and the heat dissipation inner box through the gas transmission top cover, and the gas transmission top cover and the gas transmission top cover are fixedly connected through bolts. Air is in contact with the transverse cooling fins and the heat dissipation base to be cooled, then the cooled air enters the inner box from the air holes to cool electric elements in the heat dissipation outer box, and finally the heat dissipation outer box is erected from the air outlets, so that the cooling effect is achieved, the influence of the external temperature is reduced, and the problem that the cooling effect is poor when the external temperature is high is solved; and the service life of the power element is prolonged.

The invention discloses an ultra-wideband wireless ad hoc network construction method based on TDMA and DSDV and ad hoc network node equipment, and belongs to the field of wireless communication. The problems that an existing UWB ad hoc network is high in data transmission failure rate, and real-time communication is difficult to meet are solved. The method comprises the following steps: configuring network parameters; a communication period is divided into a synchronization frame, a routing frame and at least one data subframe, and communication time slots are distributed for nodes in a network based on a TDMA protocol; in the synchronization frame, a specified node broadcasts a synchronization packet containing a period starting point timestamp, and other nodes receive the synchronization packet and calibrate a local clock according to the synchronization packet; in the routing frame, each node broadcasts the DSDV routing table in the distributed time slot, and the neighbor node receives the DSDV routing table and updates the own routing table according to the serial number and the hop count; and in the data sub-frame, each node performs data transmission in the allocated time slot based on the updated routing table, and a verification mechanism is adopted to ensure the data integrity. The method is used in the high-speed stable data transmission field.

This invention relates to the field of secondary batteries, specifically, to providing an organic electrolyte for sodium-ion batteries, a preparation method thereof, and its application in sodium-ion batteries. The electrolyte for sodium-ion batteries comprises sodium salts, organic solvents, and additives, wherein the additives include nitrile compounds, sulfonates, and organic sodium salts; this electrolyte can generate a dense SEI layer rich in various inorganic elements, ensuring the sodium... + The rapid diffusion of ions, combined with a suitable reduction in the organic content of the SEI, improves the stability of the SEI during long-term cycling. Compared to sodium-ion batteries assembled using phosphate materials as the positive electrode active material, the capacity retention rate is greater than 80% after 1000 cycles at 1C rate.

The invention belongs to the technical field of catalytic materials, and particularly relates to an immobilized enzyme catalyst for preparing chiral alcohol and chiral ester as well as a preparation method and application of the immobilized enzyme catalyst. The preparation method comprises the following steps: 1) adding anionic polyelectrolyte and cationic polyelectrolyte into water, and mixing to form an aggregate; adding an enzyme solution into the aggregate, and uniformly mixing to obtain an enzyme-containing aggregate; (2) adding a porous material into the enzyme-containing aggregate in the step (1), and uniformly stirring to obtain a mixture; and (3) adding a thickening agent into the mixture in the step (2), heating, stirring, carrying out extrusion forming, and drying, so as to obtain the product. The immobilized enzyme catalyst can be directly filled into a fixed bed reactor to carry out an enzyme catalysis reaction so as to obtain chiral alcohol and chiral alcohol ester with high added values, a high-concentration substrate continuously flows to react for 10-30 days, and the enzyme catalysis activity and selectivity are basically kept unchanged.

This invention provides a vacuum drying device for water-soluble inorganic salt carriers, relating to the field of water-soluble inorganic salt carrier drying technology. It includes a drying chamber and a drying drum. A vacuum pump is located at the back of the drying chamber, and a connecting pipe is fixedly installed on the top of the vacuum pump, with the output end of the connecting pipe connected to the interior of the drying chamber. A mounting frame is fixedly installed on the top of the drying drum. In this invention, the air inside the drying chamber is extracted by the vacuum pump and connecting pipe. Then, a controller activates two heating tube assemblies, which, with the assistance of temperature sensors, heat the interior to the required temperature. Next, the controller activates a drive motor, which drives a drive rod and multiple stirring blades to stir the material, ensuring uniform heating and moisture diffusion within the drying drum, thus ensuring thorough drying and improving the vacuum drying effect on water-soluble inorganic salt carriers.

The utility model belongs to the technical field of plasma deposition, and discloses an auxiliary device utilizing a microwave deposition plasma source, which comprises a vacuum furnace body and an auxiliary plasma source, the inner cavity of the vacuum furnace body is cylindrical, a rotating stand for placing a workpiece is arranged in the vacuum furnace body, the auxiliary plasma source is connected with the vacuum furnace body, and the rotating stand is connected with the vacuum furnace body. The auxiliary plasma source comprises a waveguide tube, energy of the waveguide tube is injected from the left side, the right side of the waveguide tube is connected with the reflection matching network, quartz glass for isolating the normal-pressure waveguide and the vacuum cavity is arranged above the waveguide tube, and perturbators for adjusting the size of the microwave waveguide are arranged on the inner side of the waveguide tube and the position of a quartz glass window. By arranging the auxiliary plasma source and the perturbator, the scattering proportion and the scattering direction of waveguide energy to the vacuum cavity can be increased, and the uniformity of the whole coating can be ensured by matching with the rotating stand in the vacuum furnace body.

This invention relates to a high-performance samarium-cobalt magnet and its preparation method, belonging to the field of magnet technology. This invention discloses a high-performance samarium-cobalt magnet, wherein the samarium-cobalt magnet is composed of a surface coated with N... y H z Sm layer (1‑x) M x (Co a Fe b Cu c Zr d ) e The magnet is made of magnetic powder material, wherein 0 ≤ x < 1, 0 ≤ a ≤ 1, 0 < b < 1, 0 < c < 1, 0 < d < 1, and 4.5 ≤ e ≤ 9. This invention also discloses a method for preparing a high-magnetic-performance samarium-cobalt magnet, the method comprising: mixing raw materials according to elemental ratios, and performing alloy melting using vacuum induction melting technology to obtain Sm... (1‑x) M x (Co a Fe b Cu c Zr d ) e Casting ingots; obtaining magnetic powder from the ingots through coarse crushing; then uniformly coating the surface of the magnetic powder with N. y H z Then, the mixed powder is post-processed to obtain a samarium cobalt magnet with high magnetic properties.

The invention discloses a solid porous polymer film for a metal-air battery as well as a preparation method and application of the solid porous polymer film, and belongs to the technical field of metal-air batteries. The preparation method provided by the invention comprises the following steps: dissolving a fluorine-containing polymer, polyoxyethylene and polyethyleneimine in a mass ratio of (2.5-2.7): (0.3-0.5): 1 in a solvent to form a membrane casting solution, then coating the surface of a substrate with the membrane casting solution, drying the substrate, then putting the substrate in water for demolding, and drying to obtain the solid porous polymer membrane for the metal-air battery. The preparation method is simple, the obtained solid porous polymer membrane for the metal-air battery simultaneously meets the functions of oxygen introduction, hydrophobicity and CO2 adsorption, and the cycle life of the metal-air battery can be remarkably prolonged.

The invention discloses a method for pre-reinforcing a shallow buried section of a tunnel, which comprises the following steps of: S1, fixing a point: determining the position of an anchoring point of a to-be-reinforced section of the tunnel, and marking; s2, punching is conducted, specifically, anchor rod holes are vertically and downwards punched in the positions of the anchoring points through a punching mechanism; s3, rod placing, wherein at least one vertical anchor rod is placed in the anchor rod hole; s4, grouting is conducted, specifically, mortar is injected into the anchor rod hole under pressure through a grouting mechanism; and S5, reinforcement is conducted, specifically, after grouting is completed, concrete is poured on the top of the tunnel, and all the vertical anchor rods are connected into a whole. The device is simple in structure, and through reinforcement of the anchor rods, when the top of a tunnel is subjected to pressure of surrounding rock above, vertical supporting force provided by the vertical anchor rods can share the weight of the surrounding rock above, the pressure borne by a tunnel vault is reduced, and the sinking trend of the vault is effectively resisted.

The present invention discloses an inert gas protection type screening device, which relates to the technical field of screening equipment, and includes a workbench, a material storage unit, a screening unit and a clearing unit, wherein the material storage unit is arranged on the top of the workbench, the screening unit is arranged on the bottom of the material storage unit, and the clearing unit is arranged inside the screening unit, the material storage unit includes a silo and a feeding pipe, the top surface of the silo is provided with a silo air outlet valve, the silo air outlet valve is provided with a first oxygen sensor, and the bottom of the feeding pipe is provided with an electromagnetic feeder. The present invention replaces the air inside the equipment by introducing inert gas in real time, reduces the oxygen content in the equipment, and monitors the oxygen content in the equipment in real time to prevent oxygen from exceeding the standard, thereby ensuring the quality of the screened material. In addition, the material on each layer of the screen can be diffused from the middle of the screen to the surroundings for screening, thereby improving the screening effect. In addition, the anti-blocking ability of the screen is further improved during the screening process.