14results about How to "To avoid" patented technology

The application relates to a device for preparing ceramic blocks by self-propagating high-temperature synthesis, and belongs to the technical field of ceramic preparation. The device comprises a ceramic block limiting device and a detonation-driven flyer device arranged above the ceramic block limiting device; after the explosion of the explosive in the detonation-driven flyer device, a flyer is driven to impact the ceramic block limiting device; the ceramic block limiting device comprises a top cover, a constraint component coaxially sleeved outside the top cover and a base connected with the constraint component; the top cover is provided with a groove capable of closely matching a convex side surface of the base, and an outer edge extending outward is arranged at the groove mouth; the constraint component is limited by the abutment of a stepped surface in the constraint component and an upper end surface of the outer edge; an ignition hole for placing an aluminized agent is arranged on the side surface of the top cover, and a through groove for placing an ignition wire in contact with the aluminized agent is arranged on the side surface of the constraint component. The device realizes omnibearing limitation of ceramic initial blanks, and is favorable for obtaining ceramic blocks with high compactness.

The invention belongs to the technical field of industrial solid waste recycling and environmental protection, discloses a red mud total recycling and innocent treatment method based on material internal circulation, and solves the problem of high dependence degree on external materials in the current red mud treatment process. The method comprises the following steps: calcining red mud and then performing acid leaching; adding sodium carbonate while heating the pickle liquor to co-precipitate iron and aluminum in one step, and collecting CO2; washing the precipitate to obtain iron-aluminum concentrate and a sodium chloride solution; cO2 is introduced into a NaOH solution to prepare sodium carbonate; the sodium chloride solution is converted into NaHCO3 and NH4Cl through a Hou's alkali preparation method, and NaHCO3 is calcined to obtain Na2CO3 and CO2; regenerating NaOH from the Na2CO3 solution through a causticization method; and extracting silicon from acid leaching residues by using regenerated NaOH to produce white carbon black. The method disclosed by the invention fundamentally avoids the generation of high-salinity wastewater, synchronously and efficiently recovers iron, aluminum, silicon and sodium resources, and has remarkable economic and environmental benefits.

The application belongs to the technical field of semiconductor lasers, and particularly relates to a non-damage semiconductor laser cavity surface preparation method. The method comprises the following steps: positioning a crystal direction of a semiconductor wafer to obtain a most easily dissociated surface of the semiconductor wafer; etching a dissociation guide groove parallel to the most easily dissociated surface, and performing a circular arc transition treatment on the corners of a ridge-shaped protection area of the dissociation guide groove during the etching process; and using the dissociation guide groove to make the semiconductor wafer naturally dissociate through a scribing process and a breaking process to obtain a smooth semiconductor laser cavity surface. The application provides two technical solutions of circular arc transitions at turning points of the dissociation guide groove, can obtain a smooth, flat, non-damage and high-quality semiconductor laser cavity surface, can avoid a reaction between gallium nitride and other semiconductor materials and water vapor, oxygen and other gases in the air after the cavity surface film is plated, improves the service life of the gallium nitride and other semiconductor lasers, and can obtain a reliable and stable semiconductor laser.

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system, which comprises a primary sedimentation tank, a synchronous nitrification and denitrification subsystem and a final-stage sedimentation tank which are sequentially communicated, and is provided with an electrolytic dephosphorization device and a liquid conveying device, and a liquid inlet of the electrolytic dephosphorization device is communicated with the bottom of the final-stage sedimentation tank through the liquid conveying device; a liquid outlet of the primary sedimentation tank is connected into the primary sedimentation tank; when the system runs, low-phosphorus turbid liquid at the bottom of the final-stage sedimentation tank is fed into the electrolytic dephosphorization device through the liquid conveying device, the turbid liquid carries metal ions generated by electrolysis to return to the primary sedimentation tank while washing a polar plate, the metal ions are combined with phosphorus in the primary sedimentation tank to form precipitates to realize dephosphorization, and supernate enters a subsequent treatment unit. Due to the low-phosphorus characteristic of the final-stage precipitation solution, the formation of phosphate in the electrolytic dephosphorization device is avoided, and the sewage treatment system does not need to be additionally provided with a sewage storage tank for storing the precipitate in the final-stage precipitation tank, so that the occupied area of the sewage treatment system is reduced.

This invention discloses a method for the catalytic hydrolysis of 3,3'-oxybis(cyclohexane-2-en-1-one) using carbon materials. Under the action of a bio-carbon-supported potassium-magnesium oxide catalyst rich in strongly basic sites, 3,3'-oxybis(cyclohexane-2-en-1-one) undergoes a hydrolysis reaction to produce 1,3-cyclohexanedione. The raw material 3,3'-oxybis(cyclohexane-2-en-1-one) is a byproduct of the resorcinol process for preparing 1,3-cyclohexanedione, and is inexpensive and readily available. The catalytic hydrolysis of 3,3'-oxybis(cyclohexane-2-en-1-one) to produce 1,3-cyclohexanedione achieves value-added processing of byproducts from the CHD industry, reduces solid waste generation, lowers the production cost of 1,3-cyclohexanedione, and has significant socio-economic benefits.

The invention discloses a method for reducing and detecting printing ink bubbles, and relates to the technical field of printing ink. The method comprises the steps of taking printing ink, designing a dispensing path, optimizing the dispensing amount and the dispensing speed, obtaining the dispensing amount through formula calculation, setting the dispensing speed and carrying out dispensing. Placing in a vacuum eutectic furnace, vacuumizing step by step to the ultimate vacuum degree, degassing, heating and curing to obtain a dispensing product; taking a dispensing product, adding the antioxidant solution, and recording the temperature T1 and the volume V3 of the dispensing product; and water culture is conducted, vacuumizing is conducted to reach the ultimate vacuum degree, and the temperature T2 and the volume V4 of the vacuumized dispensing product are recorded. According to an ideal gas formula, calculating the volume of bubbles in the printing ink and the dispensing product before and after vacuumizing by measuring the volume variation of the printing ink and the dispensing product in the graduated bottle and the separated graduated cup caused by bubble expansion under a vacuum condition; a spiral or Z-shaped path is adopted for dispensing, and air exhaust is facilitated through a continuous, one-way and non-closed dispensing path.

The utility model relates to the technical field of jewelry processing, in particular to a polishing device for jewelry processing, which comprises a base, a clamp holder, a processing machine and cleaning devices, the clamp holder is mounted on the upper surface of the base, the processing machine is mounted on the inner side of the base, the cleaning devices are arranged on two sides of the processing machine, and each cleaning device comprises a driving motor. The driving motor is fixedly connected with one side of the processing machine, the driving end of the driving motor is fixedly connected with a control wheel, the control wheel is rotationally connected with the inner side of the processing machine, sliding plates are placed on the two sides of the processing machine, one end of each sliding plate is fixedly connected with a scraper, the scrapers are placed on a grinding wheel of the processing machine, and the other end of one sliding plate is fixedly connected with a first rack. According to the polishing device, through the arrangement of the cleaning device, a worker can effectively and conveniently clean the surface of the grinding wheel, the problem that the polishing force is not uniform when the grinding wheel polishes jewelry is solved, and then the jewelry machining quality of the polishing device is improved.

The application discloses an automatic film covering machine, which comprises a rack, a conveying device for conveying a PI film, the PI film comprising a material belt and a blank part corresponding to a product and integrally formed with the material belt, a plurality of film placing rollers mounted on the rack, a copper foil conveying part for conveying a copper foil above or below the blank part, a film covering roller pressing seat for pressing the blank part and the copper foil, a separating device for cutting the product formed by pressing the blank part and the copper foil and keeping the product on the material belt, the separating device comprising a separating die capable of closing and opening, and a material discharging device for winding the material belt with the product. The automatic film covering process is realized, the flatness and position degree of the copper foil and the PI film are improved, no air bubbles are generated after the film covering, air bubbles generated after the film covering of the existing equipment are avoided, the surface of the finished product is clean and free of dirt after cutting, dust on the surface of the product in the existing production process is avoided, and several production processes are reduced.

This utility model discloses a waste gas emission purification device for alloy cast iron production, relating to the field of waste gas purification technology. It includes a housing with multiple water-cooling devices inside. Each water-cooling device comprises multiple water-cooling plates fixedly connected to the housing, an inlet pipe fixedly connected to the sides of the multiple water-cooling plates, and an outlet pipe fixedly connected to the sides of the multiple water-cooling plates. By setting multiple sets of water-cooling devices, the high-temperature waste gas generated during alloy cast iron production is cooled while preventing the generation of water vapor. The multiple sets of water-cooling devices are staggered inside the housing, causing the velocity of the high-temperature waste gas to gradually decrease as it passes through them. This allows heavier particles in the high-temperature waste gas to fall into a collection tank, achieving both cooling and removal of heavier particles from the high-temperature waste gas.

The utility model discloses a full -automatic silica gel soft film lipstick filling machine relates to lipstick production equipment field. Full -automatic silica gel soft film lipstick filling machine, including positioning platform and the positioning groove on being established in positioning platform, filling head is connected in positioning platform, and is located the positive top of positioning groove, wherein, after placing silica gel soft film into the positioning groove, can help filling head injects lipstick paste body into silica gel soft film, fixed plate is integrally formed with positioning platform, the utility model discloses, through the end of knocking rod and knocking the side wall of positioning platform, produce vibration, and the vibration is passed through positioning platform and is delivered to the silica gel soft film in positioning groove, makes the lipstick paste body of injection can better fill each corner of silica gel soft film, and the internal air is discharged, avoids producing air bubble, guarantees the quality and appearance quality after lipstick forming.

The invention relates to a method for dissolving out chloride ions and sulfate ions in sodium diuranate. A method for dissolving out chloride ions and sulfate ions in sodium diuranate comprises the following steps: mixing sodium diuranate and a dilute acid solution, and carrying out microwave extraction to obtain a first extracting solution; and filtering the first extracting solution, and carrying out cation separation treatment to obtain a second extracting solution. According to the method, a microwave extraction sample dissolving method is adopted, and the diffusion of chloride ions and sulfate ions in sodium diuranate into water is accelerated by utilizing electromagnetic waves, so that the chloride ions and the sulfate ions in sodium diuranate are effectively separated, the uniformity of an analysis sample is guaranteed, and the precision and the accuracy of a detection result are improved. According to the method, dilute acid is adopted as an extraction agent, use of chemical reagents and generation of uranium-containing waste liquid are reduced, the influence of chlorine-containing reagents on the detection result is avoided, and the method is safe, environmentally friendly, free of generation of toxic and harmful gas and environmentally friendly.

The utility model discloses a pharmaceutical coating machine equipment, include: set up single -deck stirring part on the ground, be equipped with the skip car feeding equipment in single -deck stirring part right side, be equipped with coating machine in skip car feeding equipment right side, be equipped with exhaust fume cabinet in coating machine right side, be equipped with steel frame platform in one side of exhaust fume cabinet and install on the ground, install and equip with surface cooling dehumidification cabinet on steel frame platform, be equipped with the connecting portion on coating machine, exhaust fume cabinet and surface cooling dehumidification cabinet and connect, compared with prior art, can reduce the preparation cost of coating equipment, avoids the dust that produces in the coating process simultaneously.

This invention belongs to the field of waste gas recovery technology, specifically relating to a treatment process and apparatus for low-grade ammonia-containing waste heat steam. The process involves compressing and heating the ammonia-containing waste heat steam to obtain superheated steam. A portion of the superheated steam is exchanged with the bottom liquid of a deammoniation tower to obtain dilute ammonia water and a heated bottom liquid. The remaining superheated steam is exchanged with cold water to obtain dilute ammonia water and hot water. The hot water is then flash-evaporated to obtain secondary steam and saturated water. The secondary steam is then compressed, humidified, and saturated to obtain high-grade steam. The dilute ammonia water undergoes deammoniation treatment to obtain concentrated ammonia water. This invention's treatment process fully utilizes the heat from the ammonia-containing waste heat steam to heat the bottom liquid and cold water of the deammoniation tower, which is beneficial for energy saving in the deammoniation process, recovering ammonia resources, and co-producing high-grade steam. This eliminates the need for large amounts of process water, improves ammonia recovery efficiency, and avoids the generation of ammonium salt waste liquid, reducing water treatment costs and possessing high economic value.

The utility model provides a kind of for the flow guide device of door electrophoresis, comprising: mounting seat and fixed component, the inner concave camber surface that is attached with door hemming place is provided on the mounting seat, the flow guide groove of temporary storage electrophoresis is provided on the mounting seat, the opening of the flow guide groove is abutted with door, the fixed component is fixedly arranged on the mounting seat, the protruding part for being used to cooperate with the fixed door process hole is provided on the fixed component, the utility model has beneficial effect: the flow guide device for the door electrophoresis proposed in the utility model is detachably connected with door by setting mounting seat, flow guide groove is set on mounting seat for collecting electrophoretic fluid generated when electrophoresis, it is uniformly collected and stored from door, can avoid electrophoretic mark at door, to improve the work efficiency of painting workshop, reduce the polishing amount of vehicle body, reduce the auxiliary material and artificial cost increased due to polishing.