25results about How to "To avoid" patented technology

The invention provides oxygen generation equipment and system for a plateau alpine construction environment, and belongs to the technical field of plateau oxygen generation equipment. Comprising a shelter oxygen generator, a control center is installed at one end of the shelter oxygen generator, a dust collector is installed at the other end of the shelter oxygen generator, a dust collection bin is installed at the bottom of the dust collector, a dispersion pipe is arranged below the dust collector, and one end of the dispersion pipe is in threaded connection with an oxygen guide pipeline; a sliding rail is mounted at the top of the oxygen guide pipeline, and a servo motor is mounted at the bottom of one end of the sliding rail. By arranging the dust absorption assembly and the vibration adjusting assembly, the conveying speed of oxygen and dust absorption is guaranteed, conditions are created for the construction environment, impurities and dust in a tunnel are reduced, the oxygen content in the tunnel is increased, combustion of mechanical fuel oil is maximized, harmful gas is avoided, the personal health of personnel is guaranteed, and meanwhile the safety of the tunnel is improved. And the working efficiency of personnel and machinery is improved, and the construction progress is accelerated.

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 invention provides an air conditioner and a control method, the air conditioner comprises an air conditioner body and a fresh air assembly, a heat exchanger is arranged in the air conditioner body, an air outlet of the fresh air assembly communicates with an air channel of the air conditioner body, and gas output by the fresh air assembly flows through the heat exchanger and then is exhausted from the air conditioner body. According to the fresh air ventilator, the technical problem that in the prior art, a fresh air pre-cooling structure is additionally arranged, so that condensate water generated by the fresh air ventilator is recycled, and the cost of the fresh air ventilator is high can be solved.

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 preparation method of a 5-hydroxymethylfurfural aqueous solution based on intermittent reaction. Comprising the following steps that a mixed solution containing a glycosyl biomass raw material, a catalyst, inorganic salt, water and an organic solvent reacts in a stirring state, the organic solvent is insoluble in water, and a water phase and an organic phase are obtained after the reaction; after the reaction, water is used as an extracting agent, an organic phase after the reaction is extracted, an aqueous solution of the 5-hydroxymethylfurfural is obtained, and an organic solvent after the extraction can be recycled. In the reaction process, 5-hydroxymethylfurfural generated in a water phase is transferred to an organic phase, so that the generation of a side reaction of generating black rot is inhibited. An aqueous solution of 5-hydroxymethylfurfural is obtained through aqueous phase extraction, high-energy-consumption operation processes such as reduced pressure distillation are not needed, and an organic solvent can be recycled.

The present invention relates to the technical field of corrosion resistance test equipment, and discloses a flow mixed gas corrosion test device, including a body, a test chamber is opened on the top of the front of the body, and a mixing box is fixedly installed on the back of the body. The flow mixed gas corrosion test device, by arranging a heating sleeve, a first heating plate and a second heating plate, can preliminarily heat the mixed gas inside the mixing chamber due to the design of the first heating plate, and the mixed gas carrying humidity will be heated and insulated for a second time due to the design of the heating sleeve, so as to prevent condensation water from being generated in the pipeline, and the design of the second heating plate can achieve heating and insulation of the internal environment of the test chamber, so as to avoid condensation water from being generated inside the test chamber, and at the same time, due to the cooperation between the heating sleeve, the first heating plate and the second heating plate, the temperature of the mixed gas can be changed to meet different test requirements, thereby increasing the practicality of the device.

The utility model relates to the technical field of chemical product mother liquor treatment, and discloses a sodium carbonate mother liquor purification device which comprises a mixing tank, a stirring unit, a concentration and separation unit and a washing unit, a quantitative box is fixedly connected to the top end of the mixing tank, a feeding port is fixedly connected to the top end of the quantitative box, a discharging port is formed in the front portion of the bottom end of the quantitative box, an electric push rod is fixedly connected to the rear portion of the bottom end of the quantitative box, and a movable plate is fixedly connected to the telescopic end of the electric push rod. The middle of the front end of the movable plate is fixedly connected with one end of a push column. According to the utility model, sodium carbonate mother liquor and quantitative magnesium chloride are subjected to mixed reaction, heating concentration and solid-liquid separation are carried out, solid is separated, impurities are washed to obtain a basic magnesium carbonate product, and separated liquid is continuously concentrated and separated, so that the sodium carbonate mother liquor is recycled, excessive residual saturated solution is not generated during the period, and the generation of new mother liquor is avoided; and the utilization efficiency of resources is improved.

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.

This invention discloses an anti-pull powder injection mold, comprising a mold body and a submersible sprue runner disposed within the mold body. The submersible sprue runner contains a sprue head with a conical structure. Strip-shaped guide ribs are integrally formed on both sides of the sprue head. These guide ribs are parallel to the sprue head and are not connected to the molded product. During demolding, the guide ribs forcibly guide the sprue head, ensuring that the break of the sprue head avoids the high points of the mold and detaches from contact. This anti-pull powder injection mold has a reasonable structure. By integrally forming the parallel, non-product-connected strip-shaped guide ribs with the sprue head, it solves the problem of traditional sprue head breaks easily scraping against the high points of the mold, generating powder. The guide ribs themselves have no breaks and do not generate debris. Furthermore, during demolding, they forcibly guide the sprue head to avoid the high points of the mold, preventing powder generation at the source.

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.

The utility model discloses a full -automatic high -precision laminating equipment relates to laminating equipment field, including mounting bracket, one side of mounting bracket top installs transmission subassembly, and the above of transmission subassembly is located at the top of mounting bracket and is provided with limit component, one side of mounting bracket is fixed with fixed link, and the inside movable mounting of fixed link has driven link, movable link and mounting rod, one side of fixed link installs second motor. The utility model discloses through transmission subassembly and carries out the transmission to the article, when conveying to the below of driven link, driven link will transmit the article to the other side, and then the article passes below movable link and between multiple sets of mounting rods, when passing between multiple sets of mounting rods, will carry out the lamination to the article, and visual positioning system adopts high resolution industrial camera and image processing module, and the setting of multiple sets of mounting rods can drive out the bubble produced when the article surface laminates, avoid the production of bubble, and then cut the film after pasting through cutting assembly.

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 relates to the technical field of screening device, especially a kind of powder material screening sample mixing device, including machine body, feed inlet, discharge port, screening device is arranged between the feed inlet and discharge port, the powder screening device includes two sample mixing channels and dust suction assembly between the feed inlet and discharge port.The utility model realizes the quick screening sample mixing of powder material by setting screening component, dust generated in the screening sample mixing process is adsorbed and collected by dust suction component, the process is fully automated, reduces the workload of artificial, avoids producing dust pollution working environment.

The utility model relates to composite film preparation technical field, concretely is a kind of magnetic field induction vacuum solidification device for composite film preparation, including box, side door is hingedly installed in box one side, first electromagnetic module is installed in box bottom, lifting module is installed in box top, the second electromagnetic module that is compatible with first electromagnetic module is fixed in lifting module bottom end, vacuum suction mechanism is connected in box one side, heating temperature control module is provided in box, the utility model can realize the magnetic field induction vacuum solidification purpose of PVA / LM@Ni composite film, improve the planar close arrangement degree of LM@Ni droplet in composite film, and then improve the quasi-isotropic thermal conductivity of composite film.

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 application discloses a kind of high flame-retardant waste spinning blanket and production process, belong to waste spinning blanket material technical field, including the following steps: S1, after being recycled, sorting, disinfecting, the nylon waste spinning is again opened and carded, and pretreated fiber is obtained;S2, pretreated fiber is immersed in isopropyl alcohol solution, then 10wt% concentration chloroacetic acid solution is added, and is stirred and reacted at 50-60 DEG C for 1-1.5h, then after deionized water washing, drying, modified fiber is obtained;S3, modified fiber, modified chain extender, amino nano silicon dioxide, diethyl hypophosphite aluminum are mixed uniformly, and are added to melt spinning machine to spin, after combing, paving into net, again after needle punching processing, hot-pressing treatment, high flame-retardant waste spinning blanket is obtained.The application uses nylon waste spinning as base material, and under the synergistic effect of modified chain extender, amino nano silicon dioxide and flame retardant, the tear resistance and flame retardant performance of waste spinning blanket are improved.

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 application provides a kind of anti-condensation control method of explosion-proof electric roller, relate to mechanical equipment control technical field.The method is applied to anti-condensation system, anti-condensation system includes cooling device and heating device, cooling device is connected with electric roller between proportional valve, method includes: obtaining the internal temperature of the electric roller to be controlled, internal humidity, wall temperature of the cooling water channel of electric roller and frequency converter operating state data;According to internal temperature and internal humidity, calculate current condensation point temperature;According to frequency converter operating state data, determine the working state of electric roller;In combination with working state, with wall temperature higher than current condensation point temperature and lower than preset maximum allowable temperature as target, control the start-stop of cooling device, the opening of proportional valve and the start-stop of heating device.The application can make electric roller normal operation without condensation, effectively improve the insulation performance of equipment, so as to ensure the safety of equipment.

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.