17results about How to "Realize the barrier effect" patented technology

This invention relates to the field of battery separator materials technology, specifically to MXene-functionalized aramid paper-based battery separators, their preparation methods, and applications. Meta-aramid paper is prepared by wet papermaking using short-cut meta-aramid fibers and precipitated fibers. MXene nanosheets are prepared by hydrofluoric acid etching. Using the meta-aramid paper as a substrate, a functional coating is constructed on the surface of the aramid paper by loading a mixture of para-aramid nanofibers and MXene through a vacuum-assisted filtration-layer-by-layer self-assembly method. The resulting functionalized separator is obtained through protonation reduction. The separator, with its three-dimensional porous protective layer constructed from para-aramid nanofibers and MXene, combines physical barrier and chemical bonding, effectively inhibiting polysulfide shuttle. Furthermore, the highly active sites of MXene can activate inert sulfur-containing substances, improving sulfur utilization. When used in assembling lithium-sulfur batteries, the separator achieves an initial discharge capacity of 1244 mAh·g at a constant current density. ‑1 The capacity retention rate is 82% after 200 cycles.

The utility model discloses a dust-free ton bag feeder which comprises a feeder body, an installation cylinder is fixedly connected to the upper side of the feeder body, a baffle is fixedly connected to the interior of the installation cylinder, a supporting plate is fixedly connected to the inner side of the feeder body, a driving motor is fixedly connected to the exterior of the feeder body, and an installation groove is formed in the upper side of the installation cylinder. Soft screen cloth is fixedly connected and stored in the mounting groove, a fixing ring is fixedly connected to the top of the soft screen cloth, a vertical plate is fixedly connected to the upper side of the feeder body, and a lifting assembly is arranged in the vertical plate. According to the device, most dust generated during ton bag feeding is effectively blocked through the blocking plate in the mounting cylinder and the groove body matched with the ton bag, for a small amount of escaped dust, an operator can pull the soft screen cloth by pulling the pull rope and utilizing the connecting piece to form a temporary dust cover, dust diffusion is comprehensively controlled, the feeding efficiency is guaranteed, and the dust removal efficiency is improved. And the cleanliness of the production environment and the health guarantee of operators are also remarkably improved.

The embodiment of the present application provides a dry chemical test strip and a preparation process, which relates to the field of dry chemical detection. The dry chemical test strip includes an upper substrate, an intermediate layer and a lower substrate stacked in sequence along the longitudinal direction, and the upper substrate is provided with a plurality of sample addition holes arranged at intervals; the intermediate layer includes a plurality of detection areas and a barrier area, which is a porous material membrane and the pores of the barrier area are irreversibly closed-cell treated, the pores of the detection area can allow the liquid to penetrate from the sample addition holes and diffuse in the longitudinal and transverse directions, and each barrier area is correspondingly arranged around the periphery of the detection area and defines the lateral diffusion boundary of the liquid; the lower substrate is provided with a plurality of detection holes. The preparation process of the above-mentioned dry chemical test strip mainly involves stacking the layers together in sequence, performing a closed-cell treatment on the pores of the barrier area of ​​the intermediate layer, or performing a closed-cell treatment first and then stacking. The dry chemical test strip and the preparation process of the embodiment of the present application have a simple structure and process, and can realize independent detection of each detection area without interfering with each other.

This invention discloses an anti-condensation and heat-insulating superhydrophobic aerogel coating, its preparation method, and its application in industrial thermal equipment. The method includes: segmentally modifying silica aerogel with reactive silane and hydrophobic silane in an alcohol-water mixture to obtain a bifunctional modified aerogel containing both resin-binding groups and low surface energy groups; emulsifying a phase change core material into droplets to obtain dew-point responsive bifacial breathing microcapsules; grafting polysiloxane onto the microcapsules; mixing waterborne silicone-modified film-forming resin, sheet-like shielding filler, flame-retardant filler, dispersant, defoamer, rheology modifier, film-forming aid, and water to obtain a base slurry; and performing leveling, pre-curing, and post-curing of the anti-condensation and heat-insulating superhydrophobic aerogel coating to enrich it, thereby obtaining an anti-condensation and heat-insulating superhydrophobic aerogel coating layer. This significantly reduces the wet thermal conductivity, ensuring the long-term heat-insulating effect of the coating under condensation conditions.

The invention provides a noise reduction power capacitor and a noise reduction core, and belongs to the technical field of mechanical manufacturing, the noise reduction power capacitor comprises a capacitor shell, the top and the bottom of the capacitor shell are respectively provided with a top sound-proof cover and a bottom sound-proof cover through sealing washers, and the top of the capacitor shell is provided with a wire outlet sleeve penetrating through the top sound-proof cover; a noise reduction core is installed in the capacitor shell, and a plurality of lifting pieces are installed on the two sides of the capacitor shell respectively. According to the invention, the noise problem caused by each harmonic current of the capacitor can be solved through a method of internal noise reduction, external noise reduction or combination of the internal noise reduction and the external noise reduction, and the internal noise reduction, the external noise reduction or the combination of the internal noise reduction and the external noise reduction and other methods can be independently used according to different frequencies and sizes of the harmonic current borne by the power capacitor so as to reduce the noise.

The utility model discloses a single battery and a battery pack, and relates to the technical field of batteries. The single battery comprises a battery cell, a cover plate and a shell, the shell is provided with an accommodating cavity and an opening, the cover plate is plugged at the opening, and the battery cell is arranged in the accommodating cavity. A liquid injection hole is formed in the cover plate, a containing groove is formed in the top face of the cover plate and located in the peripheral side of the liquid injection hole, a partition structure is arranged in the containing groove and divides the containing groove into a first containing groove body and a second containing groove body, the first containing groove body is located between the liquid injection hole and the second containing groove body, and a drainage groove is formed in the partition structure. The drainage groove communicates with the first containing groove and the second containing groove, and the bottom wall of the drainage groove is higher than the bottom wall of the first containing groove. According to the single battery provided by the invention, the double effects of drainage and blocking of the electrolyte are realized, so that the possibility of polluting and corroding the top cover assembly after the electrolyte overflows is effectively reduced.

The present invention discloses a movable gate type material cleaning device, comprising a motor reducer assembly, which is installed at the upper end of a motor seat, an upper cavity is arranged below the motor seat, a feed port is arranged on the right side of the upper arc structure of the upper cavity, two symmetrical cleaning balls are arranged in the middle part of the upper end of the upper cavity, a cylindrical curved pipe water inlet is arranged on the left side of the upper end of the arc structure of the upper cavity, a main shaft is coaxially arranged inside the upper cavity, scrapers are fixedly installed below the two ends of the cross bar at the lowest end of the main shaft, the lower end of the funnel structure of the upper cavity is connected to the gate valve, the lower end of the gate valve is connected to the lower cavity, the lower end of the lower cavity is connected to the pneumatic discharge valve, a linkage mechanism is arranged on the side of the lower cavity, one end of the main cylinder is connected to the linkage mechanism and the other end is fixed on the outer left side of the upper cavity, and three cylindrical legs are arranged at the outer lower end of the upper cavity. The material cleaning efficiency of the device is high and the device has a self-cleaning cleaning function.

The invention discloses a wound water pumping anti-overflow device which comprises a water pumping pipe with one end inserted into a wound of a patient and the other end exposed out of the wound of the patient and communicated with a pump body; the sticking limiting structure is clamped with the water pumping pipe and is stuck on the wound of the patient; the annular absorption structure is arranged in the pasting limiting structure, the outer surface of the pasting limiting structure is exposed, and the annular absorption structure abuts against the peripheral surface of the wound; the anti-tilting structure is arranged on the outer edge of the sticking limiting structure and can be accommodated on the sticking limiting structure; the extrusion type anti-overflow structure is arranged in the sticking limiting structure in a penetrating manner and is arranged on the peripheral surface of the water pumping pipe; the pipe body limiting structure is clamped with the water pumping pipe and is connected with the sticking limiting structure; the invention further discloses a using method of the anti-overflow device for wound water pumping. The drainage reliability is high, the treatment comfort is improved, the traditional scheme that the chest wall or the abdominal wall is clamped and fixed to prevent the guide tube from exiting is replaced, tissue fluid is effectively prevented from overflowing, and absorption and secondary blocking of the tissue fluid can be achieved.

The invention relates to an amplifier circuit, a differential amplifier circuit, a receiving circuit and a signal link. An amplifier circuit of the present application comprises: a current source; the first end of the current source is connected with the first power supply end; an input pipe; the drain end of the input tube is connected with the second end of the current source, and the input tube is configured as the signal output end of the amplifier circuit; any one of the source end and the grid end of the input tube is configured as a signal input end of the amplifier circuit; and the capacitance-inductance resonance body is coupled between the source end of the input tube and the second power supply end in series, and is used for enabling the gain of the amplifier circuit to form an extreme value at a set frequency. According to the invention, the CMT event can be filtered, and the influence of the CMT event on the signal link is reduced.

The utility model discloses a height-adjustable cab protection device, and relates to the technical field of truck carriage protection. Comprising a supporting frame body and a protective frame body; the protection frame body comprises a safety frame main body and a first protection assembly; the safety frame body is connected to the upper portion of the supporting frame body through a telescopic assembly. The first protection assembly is connected between the safety frame body and the supporting frame body and used for separating a front plate of a compartment from a cab. The supporting frame body is welded and connected to the front end of the carriage front plate; the supporting frame body is connected with a plate lock which is used for mutually pressing the side wall of the supporting frame body and the side wall of the safety frame main body; the connecting strength of the whole protection device is enhanced, impact and vibration can be resisted, the telescopic movement of the safety frame body relative to the supporting frame body adjusts the height of the first protection assembly relative to the carriage front plate, and therefore protection of different vehicle types is achieved.

This invention relates to the field of low-frequency elastic wave bandgap technology, and more particularly to a method for controlling the low-frequency elastic wave bandgap based on viscoelastic damping materials. The invention includes the following steps: converting the Young's modulus of the viscoelastic damping material into a function varying with frequency, introducing a first control factor; analyzing the control law of the first control factor on the negative property material parameters, and analyzing the elastic wave transmission characteristics in the viscoelastic damping material when the material parameters within the bandgap are negative; introducing a second control factor to adjust the viscoelastic damping material parameters to a complex form, and analyzing the control law of the second control factor on the complex property material parameters; determining the dispersion curve when the viscoelastic damping material parameters are complex, and analyzing the influence of the complex property tensile modulus on the elastic wave transmission characteristics based on the real and imaginary parts of the dispersion curve; and analyzing the control law of the elastic wave dispersion characteristics when the tensile modulus of the viscoelastic damping material is complex. This invention can solve the problem of high difficulty in low-frequency vibration reduction and noise reduction.

This application belongs to the field of valve core processing, specifically an automatic valve core grinding machine. A conveyor frame is mounted on the upper surface of the frame, and baffles are fixedly connected to both sides of the conveyor frame. An adjustable grinding frame is mounted on the upper surface of the frame, and a grinding wheel is installed on the inner wall of the adjustable grinding frame. A support plate is fixedly connected to the inner wall of the frame, and a feeding and collecting mechanism is provided on the inner wall of the frame. The feeding and collecting mechanism includes a pushing component and a collecting component. This application achieves automatic and stable pushing through the pushing component. A motor drives a rotating disk, which in turn drives a push rod via an eccentric connecting rod. A magnetic block ensures pushing stability, and the inclined surface of the baffle allows the push rod to disengage from the magnetic attraction and adjust its angle. This allows valve cores with rust or dirt to be smoothly pushed into the grinding area, solving the problem of material jamming. No manual intervention is required, improving conveying reliability and process automation efficiency.

The invention belongs to the field of composite materials, and provides a silicon-acrylate adhesive, cotton and membrane material composite material. According to the invention, a four-layer composite structure design of the A-surface silica gel layer, the solvent-free curing isolation barrier layer, the composite carrier layer and the B-surface acrylate adhesive layer is adopted; the heterogeneous double-sided bonding performance that a high-solid-content low-viscosity coating window, an ultrathin solvent-free isolation layer and high-barrier migration resistance are achieved, the peeling strength of a surface A to silicone rubber is not lower than 6N / 25mm, and the lasting adhesion of a surface B to a metal base material is not lower than 24h is achieved; the technical problem that a traditional double-faced adhesive tape system is difficult to consider the ultrathin coating coiling process, the high cohesion creep resistance and the size stability under multiple thermal history conditions is solved, and the double-faced adhesive tape has wide application value.

The concentration-adjustable anesthesia device comprises a machine body, an atomizer communicated with the surface of the machine body and an anesthetic tank communicated with the surface of the atomizer, and one side of the top of the machine body is communicated with a reaction chamber; the atomizer can extract and atomize medicine in the anesthetic tank and inject the medicine into the reaction chamber through the output end, the top of the reaction chamber communicates with an oxygen supply pipe, the other side of the reaction chamber communicates with an input pipe used for anesthetizing a patient, and a recycling structure communicating with the reaction chamber is arranged at the bottom of the machine body. The front face of the recycling structure communicates with a backflow pipe communicating with the input pipe. Medicine in the anesthetic tank is atomized through the atomizer and injected into the reaction chamber, and after being mixed with oxygen provided by the oxygen supply pipe, the medicine is conveyed to a patient through the input pipe. Anesthetic gas exhaled by a patient enters the recovery structure through the backflow pipe, and cyclic utilization and concentration adjustment of the anesthetic gas are achieved.

This invention relates to the field of heat exchanger tube manufacturing and assembly technology, specifically to an automated cutting and assembly device for heat exchanger tubes. The device includes a guiding and conveying structure, a flow-diverting and limiting structure, and a cutting and assembly structure. The flow-diverting and limiting structure is fixedly connected to one side of the guiding and conveying structure, and the cutting and assembly structure is also fixedly connected to one side of the flow-diverting and limiting structure. The guiding and conveying structure guides the heat exchanger tubes, pushing them to switch positions on the flow-diverting and limiting structure. The flow-diverting and limiting structure is used for switching the heat exchanger tubes and also provides multi-point limiting functionality through a control guiding unit. The cutting and assembly structure is used for cutting and assembling the heat exchanger tubes. The cutting component performs multi-position angle cutting, and the assembly component guides the assembly, resulting in an interference fit between the heat exchanger tubes and the heat exchanger mating plate. This structural design facilitates integrated production processes of material guiding, cutting, and assembly, improving the automation capability of heat exchanger manufacturing.

The invention belongs to the technical field of building decoration materials, and particularly relates to a sound insulation and heat insulation integrated jute fiber core board which is a composite board body of an integrated layered composite structure, and the composite board body is sequentially laminated and compounded with a surface layer, a first supporting layer, a jute fiber body, a second supporting layer and an inner layer in the thickness direction of the board; the jute fiber body comprises at least two jute fiber felts which are laminated and compounded, a plurality of Helmholtz resonant cavity units which are distributed in the jute fiber felts in an array manner, and a heat-insulating and heat-preserving filler which is filled in the jute fiber felts; through the synergistic effect of the jute fiber porous sound absorption structure and the resonance sound absorption principle of the Helmholtz resonant cavity units, the low and medium frequency noise frequency band of 200-1000 Hz is covered, and the problem that a traditional jute fiber board is poor in low and medium frequency noise treatment effect is solved. The jute fiber felt is filled with the heat insulation filler, the sound insulation function and the heat insulation function are fused, and the problem that a traditional jute fiber board is poor in sound insulation and heat insulation performance synergism is solved.

This utility model discloses a computer cable winder, comprising: multiple winding components stacked vertically; each winding component includes a barrier plate with a connecting cylinder in the center and multiple anti-derailment brackets arranged in a circular array on its sides; and a placement bracket for positioning the stacked winding components, including a stabilizing base. This utility model provides a computer cable winder where each winding component can independently wind one cable, achieving independent winding and preventing tangling caused by winding multiple cables together. The barrier plate provides isolation between stacked winding components, the multiple anti-derailment brackets on the connecting cylinder effectively prevent the wound cable from falling off, and the Velcro A and B sides at the top and bottom of the connecting cylinder allow for the adhesion and fixation of adjacent winding components.