24results about How to "Stable and stable" patented technology

The invention discloses riboflavin photodynamic antibacterial hydrogel for a diabetes wound dressing as well as preparation and application of the riboflavin photodynamic antibacterial hydrogel, and belongs to the technical field of biomedical materials. The hydrogel is prepared from carbomer 941, rhizoma bletillae polysaccharide and carboxymethyl chitosan through physical and chemical bi-crosslinking, glutaraldehyde and carboxymethyl chitosan are added to form dynamic imine bonds, and the stability and adaptability of the hydrogel are enhanced. Meanwhile, the photosensitizer riboflavin is introduced, so that the hydrogel is endowed with photodynamic sterilization characteristics, efficient antibiosis is realized, and rapid healing of diabetic wounds is promoted. The hydrogel has excellent wound environment adaptability and adhesion performance, and is suitable for complicated wound surfaces of diabetes mellitus. The successful research and development of the invention provide reference for the development of novel photodynamic wound dressings, have wide application prospects, provide better treatment choices for diabetics, and are helpful for accelerating wound healing, reducing infection risks and improving the life quality of patients.

The invention discloses a large-flux high-precision ceramic flat sheet membrane for removing iron and fishy smell of drinking tap water and a preparation method thereof, and belongs to the technical field of ceramic flat sheet membranes. The ceramic flat sheet membrane comprises a support body, a high-precision filter layer, an adsorption layer and a filling adsorbent. The preparation method comprises the following steps: 1) preparing a ceramic flat sheet membrane mud green body; (2) preparing a ceramic flat sheet membrane support body; 3) preparing a high-precision filter layer by a dip-coating method; (4) preparing an adsorption layer by a spraying method; and (5) filling a reinforced adsorbent and packaging an end. According to the present invention, the ultra-fine membrane material is used to produce the high separation precision, the effluent quality is ensured, the operation cost of the split type filtration is reduced, the molecular sieve adsorption membrane and the enhanced filling adsorbent are produced, and the iron ions in the urban tap water are effectively adsorbed; the vacuum dip-coating method is matched with the one-time sintering process, so that the working procedures can be saved, the yield is high, the membrane layer thickness and the membrane surface are uniform and consistent, basically no pore defect exists, and the flux and the precision stability of the ceramic flat membrane product are further stabilized.

The invention relates to the technical field of industrial wastewater treatment, and discloses a wastewater treatment method in a carton printing production process, which comprises the following steps of: 1, filtering carton printing wastewater through a coarse grid and a fine grid in sequence to further remove particle suspended matters; 2, the filtered wastewater enters a regulating tank, the pH value of the wastewater is monitored through an on-line pH sensor, NaOH or H2SO4 is accurately added through an automatic control system according to the monitoring result, the pH value is regulated to 6-8, and the retention time of the wastewater in the regulating tank is controlled to be 6-8 h. Through multi-stage grid filtration and micro-electrolysis pretreatment, suspended particles and macromolecular organic matters in the wastewater are effectively removed, the load of a subsequent unit is reduced, meanwhile, the biodegradability of the wastewater is improved, favorable conditions are provided for subsequent biological treatment, the overall treatment efficiency is remarkably improved, and the risks of system blockage and equipment maintenance are reduced.

The present invention provides a method for synthesizing vitamin E succinate catalyzed by lipase in a low eutectic solvent, belonging to the field of biocatalysis technology. The low eutectic solvent is synthesized by a heating and stirring method using the fatty acid n-decanoic acid as a hydrogen bond acceptor and lidocaine as a hydrogen bond donor. The low eutectic solvent prepared by this method has the advantages of maintaining enzymatic properties and good substrate solubility, and can be used to catalyze the esterification reaction of vitamin E and succinic anhydride to prepare vitamin E succinate. The method can be carried out at a relatively low temperature of 50°C, the reaction is rapid and only takes 6 hours, the amount of lipase used is small (only 4% substrate mass ratio is required), the conditions are mild, and the yield of vitamin E succinate is as high as 95.67%. The present invention provides a new method for synthesizing vitamin E succinate in a green and efficient manner.

This utility model relates to the field of sheet metal processing technology and discloses an intermittent sheet metal cutting device, comprising: a box for storing sheet metal materials, a baffle that slides vertically on the front side of the box, a connecting rod connected to the left side of the box via a gear set, a connecting member rotatably connected to the top of the connecting rod, a limiting groove formed on the upper left side of the box, the left end of the baffle slidingly connected to the inside of the limiting groove to limit the sliding distance, the left end of the baffle rotatably connected to the connecting member, and a stack of sheet metal supported inside the box by a lifting member; a frame serving as the sheet metal cutting point, with a laser cutting head for cutting sheet metal mounted on the top of the frame via an XYZ platform. In this utility model, the feeding process creates intervals between each metal sheet sliding out of the box during feeding, preventing collisions between sheets during feeding and stabilizing the stability of the sheets during feeding, thereby avoiding any impact on production efficiency during feeding.

The application discloses a kind of 3D printing composite material and preparation method thereof, it is related to 3D printing functional composite material and flexible electronic material technical field.The application is prepared when composite material, with thermoplastic polyurethane as flexible matrix, graphene, carbon nanotube is synergistic conductive filler, by solution dispersion, melt blending, fused deposition forming and microwave surface enhancement is obtained.The application utilizes graphene sheet layer support and carbon nanotube bridging effect, constructs continuous efficient conductive network under low filler, solves the industry pain point that traditional material filler is highly dependent, printing is poor, electrical stability is insufficient, has excellent printability, piezoresistive response and cycle stability, and is suitable for flexible sensing, wearable electronics, structure function integrated device.

A casement window inner frame is fixedly connected to the inner wall of a casement window outer frame, a door and window lock rail is arranged on the left side of the front surface of the casement window outer frame, and an opening and closing window is arranged on the inner wall of the casement window inner frame. The double-layer glass is arranged in an inner wall groove of the opening and closing window and connected with the first glass containing opening and the second glass containing opening, the axis opening is formed in the upper portion and the lower portion of the left side of the front surface of the opening and closing window, and the limiting rotating shaft is arranged in the middle of the left side of the front surface of the opening and closing window. The rotating block is sleeved with the axis opening, the rotating control column is fixedly connected to the surface of the rotating block, the sliding block is fixedly connected to the back of the rotating control column, the first glass containing opening is formed in the left side of the inner wall of the opening-closing window, the second glass containing opening is formed in the right side of the inner wall of the opening-closing window, and the hidden drainage groove is formed in the bottom of the first glass containing opening.

The invention relates to the technical field of crystal frequency chip dispensing equipment, in particular to high-power crystal frequency chip automatic dispensing equipment and an operation method, the high-power crystal frequency chip automatic dispensing equipment comprises a conveying device used for conveying a trapezoidal mounting base plate, and insulating bases are symmetrically arranged at the top of the trapezoidal mounting base plate in a limiting manner; the dispensing device comprises a frame, a glue barrel, a controller, a double-dispensing mechanism and a synchronous conveying driving mechanism. Therefore, the structure is reasonable, the dispensing device works accurately along the preset path, the machining precision is guaranteed, the design of electronic elements is simplified, the operation convenience and durability are enhanced, the fault rate and the maintenance cost are reduced, compared with a water drop shape, the novel concentric-square-shaped dispensing mode is more uniform and stable, glue is saved, the cost is reduced, meanwhile, glue overflow is avoided, and the production efficiency is improved. Subsequent workload is reduced, resonator performance is guaranteed, and product reliability and production efficiency are improved.

The utility model relates to a brush convenient to switch different brush heads, which comprises a handle, an anti-slip sleeve is fixed on the outer surface of the handle, a brush head is arranged at the right end of the handle, a hanging ring is rotatably connected to the left end of the handle, and an auxiliary mechanism used for switching different brush heads is arranged on the handle. The auxiliary mechanism comprises an auxiliary assembly arranged on the brush head, a positioning assembly arranged on the auxiliary assembly, a supporting assembly arranged on the auxiliary assembly and a limiting assembly arranged on the auxiliary assembly. The auxiliary assembly comprises a fixing base fixed to the left side of the brush head and a fixing groove formed in the left side of the fixing base, and the right end of the handle is inserted into the fixing groove. The threaded rod penetrates through the threaded hole in the fixed seat and extends into the threaded groove of the handle, so that the brush head and the handle are fixed together, different brush heads can be conveniently switched, meanwhile, the stable effect of the brush head and the handle is better and firmer through the threaded connection mode, and the brush head and the handle are not prone to falling off in the using process.

The present disclosure relates to the technical field of cable production, and one embodiment of the present disclosure provides a cable drum cable pressing wheel device, which comprises a base and a pair of vertical plates, the vertical plates are arranged on the base, a drum is arranged on the base, a clamping driving assembly is arranged between the drum and the base, a column is fixed on the base, and a pressing wheel compacting assembly is arranged on the column. The pressing wheel compacting assembly comprises a pair of transmission cavities, the transmission cavities are arranged in the upper and lower ends of the column, a lifting frame connected through vertical linear driving is arranged in the transmission cavities, the transmission cavities are arranged in the lifting frame, the transmission cavities are open on both sides, and a pair of pressing rollers are arranged on the lifting frame. Through the above technical scheme, the technical problem that most cable drums in the prior art can easily cause the cable to be stacked too high and the local stress to be uneven, which not only occupies more storage space, but also can cause the cable to slip and wear during transportation or use is solved.

The dustproof headphone support comprises a main rod frame, an adjusting cylinder is connected to the main rod frame in a sliding mode, a top disc is installed on the upper portion of the adjusting cylinder, a plurality of adjusting mechanisms are distributed on the upper middle portion of the adjusting cylinder at equal intervals, and a dustproof mechanism is arranged in the middle of the outer wall of the top disc. A supporting mechanism is clamped to the lower portion of the main rod frame, the adjusting mechanisms comprise a plurality of first threaded grooves and a plurality of second threaded grooves, the first threaded grooves are distributed in the upper middle portion of an adjusting cylinder at equal intervals, and the second threaded grooves are distributed in the upper middle portion of the main rod frame at equal intervals. The headset support has a height adjusting function and a dustproof function, and can play a role in preventing dust and isolating splashed water or oil stains, so that the hung headset is not easy to stain and is not damaged due to breakage caused by wetting.

The present invention discloses a combined support structure and a construction method for a deep buried tunnel in a clastic schist stratum. The combined support structure comprises an advance support, a tunnel steel arch frame and an anchor-sprayed mesh joint support; the advance support comprises a plurality of face fiber anchor rods vertically driven on the face, a plurality of sections of advance small conduit support and a grouting reinforcement area, the plurality of face fiber anchor rods completely cover the face, each section of the advance small conduit support is composed of a plurality of advance small conduits and the overlap length along the tunnel excavation direction is not less than 1m or 1 / 4L 导管 Each section of the advance small pipe support is a plurality of advance small pipes set within 120° on the arch of the tunnel face, and the grouting reinforcement area is the area where the fiber anchor rods and the surrounding rock of the tunnel face in the area where the advance small pipes are set are grouting. The invention effectively ensures the stability of the tunnel face, prevents the excavation face from sliding and collapses, and effectively controls the combined support structure of the support deformation, ensures construction safety, and improves construction efficiency.

The present invention belongs to the technical field of decorative and assembled building, and specifically relates to a suspension device for metal hanging plates and an installation method thereof, wherein the suspension device includes a load-bearing hanger and a non-load-bearing hanger, including a load-bearing hanger and a non-load-bearing hanger, wherein the load-bearing hanger includes a U-shaped hanger 1 fixed to a steel structure column, a bolt 1 penetrating two side plates of the U-shaped hanger 1, and two load-bearing hangers connected to the bolt 1, the end of the bolt 1 is fixed by a nut, and the two load-bearing hangers are also fixed to the metal hanging plate; the non-load-bearing hanger includes a U-shaped hanger 2 fixed to a steel structure column, a bolt 2 penetrating two side plates of the U-shaped hanger 2, and two non-load-bearing hangers connected to the bolt 2, the end of the bolt 2 is fixed by a nut, and the two non-load-bearing hangers are also fixed to the metal hanging plate. The present invention realizes the three-dimensional direction adjustment of the metal hanging plate, has flexible adjustment, and has a wide range of applications, and ensures that the top of the metal hanging plate is stressed, the lower limit is accurate, the installation is flat, the installation speed is fast, and the positioning accuracy is high.

The invention relates to the technical field of Chinese wolfberry fruit pulp crushing, in particular to a Chinese wolfberry fruit pulp crusher which comprises a power motor, a movable mold assembly is installed at the front end of the power motor, a static mold assembly is installed on the movable mold assembly, and a cooling mechanism and a discharging mechanism are arranged on the static mold assembly. According to the device, the rotary crushing assembly in the movable mold assembly can be driven to rotate through the power motor, when the rotary crushing assembly rotates, Chinese wolfberry fruits entering the mounting ring assembly can be fully ground, the ground Chinese wolfberry fruits can be discharged through the opening, meanwhile, the stability of the temperature in the mounting ring assembly can be effectively guaranteed through the cooling mechanism, and the quality of the Chinese wolfberry fruits is improved. The influence of high temperature caused by grinding on the quality of the whole wolfberry pulp is avoided, and the quality of the whole wolfberry pulp is ensured.

The application discloses a preparation method and application of a defect-rich ruthenium dioxide aerogel catalyst, and the preparation method comprises the following steps: S1: uniformly mixing a ruthenium source, a selenium source and water to obtain a solution A, uniformly mixing a reducing agent and water to obtain a solution B, and adding the solution A into the solution B, and then washing after reaction to obtain Ru2Se AS; S2: loading the Ru2Se AS obtained in the step S1 on carbon black, and then performing washing and freeze-drying to obtain Ru2Se aerogel loaded on the carbon black; and S3: performing heat treatment on the Ru2Se aerogel loaded on the carbon black obtained in the step S2 to obtain a product. Electrochemical tests show that the prepared defect-rich ruthenium dioxide aerogel catalyst has high water electrolysis oxygen evolution (OER) performance under an acidic condition, and has good application prospect and commercialization potential.

The utility model provides a high-precision and high-performance thread spinner outer side wall plate which comprises a wall plate installation bottom plate, a supporting wall plate, an outer side reinforcing edge, a reinforcing rib, a working roller, an extending supporting seat and an auxiliary roller, the supporting wall plate is fixedly installed on the surface of the wall plate installation bottom plate, the outer side reinforcing edge is fixedly installed on the outer side of the supporting wall plate, and the reinforcing rib is fixedly installed on the outer side of the supporting wall plate. The reinforcing rib is fixedly mounted between the wallboard mounting bottom plate and the supporting wallboard; the working roller is rotationally installed in the supporting wall plate, the extending supporting base is fixedly installed on the surface of the outer side reinforcing edge, and the auxiliary roller is rotationally installed in the extending supporting base. Due to the arrangement of the supporting wallboards, the outer side reinforcing edges and the extending supporting seats, the requirements of the modern textile industry for high precision, high stability and high performance can be met.

A novel tool special for turning over a runner plate of a hydroelectric generating set comprises a hoisting adjusting structure and hoisting rotating structures matched with the hoisting adjusting structure, the hoisting adjusting structure comprises a hollow adjusting beam, and the hoisting rotating structures matched with the hollow adjusting beam in a limiting and moving mode are symmetrically arranged on the two sides of the hollow adjusting beam. First lifting lugs and limiting sliding grooves are symmetrically arranged on the hollow adjusting beam, a fixing base is arranged in the middle of the hollow adjusting beam and connected with a double-shaft motor, the output ends of the two sides of the double-shaft motor are connected with one ends of adjusting screw rods located at the symmetrical positions, and the other ends of the adjusting screw rods are connected with the hollow adjusting beam through connecting bases. By the adoption of the structure, the runner plate is quickly connected and fixed, a space is built for overturning operation, the number of operators is remarkably reduced, a ratchet wheel and ratchet matching structure ensures that the runner plate does not rotate in the overturning process, steering of the runner plate is stably operated, the overturning process is more stable and smoother, and the working efficiency is remarkably improved; the device is flexible in overall structure, firm and stable in butt assembly, stable and smooth in overturning and high in practicability.

The utility model discloses an ablation catheter and an ablation system, and the ablation catheter comprises a catheter body which comprises a head end and a bending section connected with the head end; the ultrasonic transducer is arranged in the head end in the radial direction of the catheter body, so that the ultrasonic transducer can obtain an ultrasonic sector diagram in the forward direction of the head end; the ablation head electrode is arranged on the outer surface of the head end and used for conducting ablation on the target position, and the part, corresponding to the ultrasonic sector diagram, of the ablation head electrode is configured to enable ultrasonic waves to pass through; and the positioning electrode is arranged on the peripheral surface of the bent section and is used for positioning the target position. The ultrasonic transducer is integrated in the ablation catheter, so that the ultrasonic transducer can obtain the ultrasonic sector diagram with the forward head end, and when the ablation catheter is placed in a human body, ablation can be guided in a close range, ablation complications can be monitored, the ablation depth can be observed, and the ablation effect can be judged under the guidance of the ultrasonic sector diagram. And a doctor can be guided to select proper ablation energy, ablation time, ablation power and the like.

The present invention provides a thoracic aortic aneurysm covered stent matching method based on the assistance of intelligent image analysis, which comprises the following steps: retrieving an artery corresponding to an aneurysm in a three-dimensional image as a diseased artery, obtaining a diseased opening of the aneurysm at the diseased artery, repairing the diseased artery based on the diseased opening, and obtaining a repaired artery; obtaining an opening edge point and an actual opening distance corresponding to the repair opening in the repaired artery, and determining a preliminary stent model based on the opening edge point and the actual opening distance; when it is determined that the preliminary stent model passes through a branch artery, processing the preliminary stent model according to a branch anchoring strategy, and generating a stent matching model; when it is determined that the preliminary stent model does not pass through a branch artery, adjusting the preliminary stent model according to a morphological adjustment strategy, and generating a stent matching model.

The utility model relates to the technical field of oral care, in particular to an oral toothbrush, which comprises a lighting component and a holding component, the lighting component comprises a connecting tube, a battery box, a switch and a lighting lamp, the battery box is mounted on one side of the connecting tube, the switch is mounted on the surface of the connecting tube, and the lighting lamp is arranged on one side of the switch. According to the oral toothbrush, through the arrangement of the connecting pipe, the battery box, the switch and the illuminating lamp, when the oral toothbrush is used, the battery box is fixed by the connecting pipe, a battery can be stored in the battery box and used for supplying power to the illuminating lamp, a user can manually control the switch to control the illuminating lamp to be turned on and turned off, and when the user stretches the connecting pipe into the oral cavity of a patient for cleaning, the illuminating lamp illuminates the oral toothbrush; the battery box, the switch and the illuminating lamp are electrically connected, so that an operator can be matched for examining the interior of the oral cavity, sputum and flushing fluid are sucked and discharged, teeth can be cleaned, the cleaning efficiency is improved, and the cleaning difficulty of the user is reduced.

The utility model provides a breast pump sealing mechanism and breast pump relates to breast pump technical field, wherein the sealing mechanism includes milk cover body, milk cover body includes milk bowl cover and sealing structure, the sealing structure includes rigid sealing piece and flexible sealing piece, and the rigid sealing piece and flexible sealing piece form connecting neck between connecting neck, and the connecting neck is connected with the flexible sealing piece. The rigid sealing piece of a rigid structure is adopted, stable strength and stability can be provided, the flexible sealing piece can elastically deform in the direction close to the rigid sealing piece, and the connecting flange located in the connecting clamping groove can be attached to the rigid sealing piece more tightly; the elastic deformation can compensate poor contact between the connecting flange and the connecting clamping groove caused by errors or deviation during assembly, tight connection between the milk cover body and the milk bowl and reasonable combination of a rigid structure and a flexible structure are guaranteed, the dual functions of rigid supporting and flexible adaptation are achieved, sealing tightness is guaranteed, and the service life of the milk cover body and the milk bowl is prolonged. And the stability and the adaptability of the whole structure are also improved.

The utility model discloses an integral bathroom one-way folding door which comprises an upper guide rail, a lower guide rail and a door plate assembly, the upper guide rail and the lower guide rail are horizontally arranged at the top and the bottom of a door opening of an integral bathroom respectively and used for guiding the door plate assembly to slide and fold, and the door plate assembly is composed of a plurality of door plates hinged to one another. The upper end and the lower end of each door plate are movably connected with the upper guide rail and the lower guide rail respectively, the door plates are connected through movable hinges, relative folding action can be achieved, and when the door plate assembly is in a completely unfolded state, the multiple door plates are spliced to form a complete door body. The utility model has the advantages of reasonable structural design, space saving, stable guiding, water drainage, light transmission, convenient and safe use and good sealing performance.

The application discloses a method for improving heat exchange efficiency in a dimethyl sulfoxide production process, and particularly relates to optimization of the dimethyl sulfoxide production process, especially a means for improving heat exchange efficiency in the production process. The method solves the problem of low heat exchange efficiency in the prior production method, has the technical advantages of greenness and high efficiency, and unexpectedly obtains the advantages of yield improvement, device cleaning and extension of replacement period, and the like. The method can save cost and improve production efficiency in actual production.

The utility model relates to a kind of tire self-propelled slide platform and conveying system, including pedestal, track, trolley and drive assembly.The self-propelled slide platform structure design is scientific and reasonable, and each component works in cooperation, can ensure that tire conveying process is stable, smooth;Synchronous belt drive mode is used and is provided with tension pulley, can guarantee the reliability and stability of power transmission, avoid the occurrence of skidding phenomenon, and the wheel set of trolley is provided with wheel and guide wheel, wheel is used to reduce running friction, guide wheel is used to prevent trolley deviation, ensure that trolley runs smoothly, accurately;While being provided with position sensor and sensing element realizes the real-time monitoring and accurate control of trolley running position, reduces manual intervention, improves production efficiency and automation degree.The whole structure can realize the automatic conveying of tire and prevent blank damage, and structure is simple, compact, manufacturing and use cost are lower, with very high practicability.