250results about How to "Reduce contact time" patented technology

The utility model belongs to the technical field of powder metallurgy powder preparation, and particularly relates to a gradient annular groove ball milling tank which is applied to development and research of novel composite materials and metallurgical technologies. When a traditional ball milling tank with a smooth inner wall is used for preparing flaky metal powder, the consumed time is long, the powder loss is large, impurity elements are easy to introduce, and particularly, hard metal powder (such as titanium and tungsten) is difficult to mill into flaky metal powder. According to the gradient annular groove ball-milling tank provided by the utility model, the gradient annular inner groove is formed in the inner wall of the ball-milling tank, so that the stress condition and the collision mode of metal powder and the ball-milling tank under the action of ball-milling beads can be optimized, and the metal powder is converted into a sheet shape with high efficiency and low loss. The inner molded surface of the gradient annular groove ball milling tank is a cylindrical surface, and a plurality of annular grooves are distributed in the inner molded surface in the height direction; wherein the section of the annular groove is in a semi-elliptical arc shape, and the ellipticity of the annular groove from the top to the bottom is gradually reduced.

The invention discloses a vertical take-off and landing fixed-wing aircraft, and relates to the technical field of aircrafts. According to the invention, the conversion from a multi-rotor flight mode to a fixed-wing flight mode and from the fixed-wing flight mode to the multi-rotor flight mode can be easily realized. Due to the structural layout characteristics of the aircraft, the safety of the aircraft is guaranteed, and the aircraft can be safely and reliably landed according to the fault degree and urgency of the aircraft even if the aircraft breaks down seriously and only forced landing can be selected. Through multi-rotor-wing assisting control, the forced landing buffering function of the telescopic empennage assembly and the safety protection measure of a protection sponge lining in the manned cabin, various safety modes and measures such as an internal safety protection air bag, an external safety protection air bag and a forced landing parachute of the manned cabin can be selectively used according to the fault degree and urgency of the aircraft; and safe or low-damage forced landing of the aircraft is realized.

The present invention provides a hemodialysis concentrate and a preparation method thereof, belonging to the technical field of pharmaceutical preparations, the hemodialysis concentrate includes liquid A and liquid B; liquid A includes sodium chloride, potassium chloride, magnesium chloride, calcium chloride and citric acid; liquid B includes sodium bicarbonate; the method for preparing liquid A is: sodium chloride, potassium chloride, calcium chloride and magnesium chloride are added to dialysis water, and the feed is fed once, stirred evenly and then filtered in a circulation manner; after the quality inspection is qualified, citric acid is added for secondary feeding, pH=1.5~1.7 is controlled, stirred and circulated, and liquid A is obtained after the citric acid is tested and qualified; the method for preparing liquid B is: sodium bicarbonate is added to dialysis water, stirred evenly and then filtered in a circulation manner, and liquid B is obtained after the quality inspection is qualified. The present invention uses citric acid as the acid solution of liquid A, adopts secondary feeding when preparing liquid A, adjusts the addition order of the liquid preparation raw materials, and controls the temperature and pH value, so as to prepare a hemodialysis concentrate with high stability and strong quality and safety.

The safe storage cabin comprises a main monitoring system, a heat dissipation fire fighting system and a cabin body, a plurality of energy storage electric cabinets are stored in the cabin body, and a main energy storage converter, a main transformer and an electric cabinet management system which are connected with the energy storage electric cabinets are fixedly arranged in the cabin body; the cabin body is provided with a cabin door, the cabin door is provided with a display panel and a cabin body management server, and the cabin body management server is electrically connected with a valve of the fire sprinkler, the main monitoring system, the main energy storage converter, the main transformer, the electric cabinet management system, a control mechanism of a roller shutter type fireproof blanket in the heat dissipation fire extinguishing system and the display panel; the main monitoring system transmits detected signals to the cabin management server, the cabin management server controls the operation states of the roller shutter type fireproof blanket, the fire sprinkler, the main energy storage converter, the main transformer and the electric cabinet management system according to the received signals, operation data are displayed through the display panel, large-scale management of the energy storage electric cabinet is achieved, and the energy storage electric cabinet management efficiency is improved. The energy storage cost is reduced, and the space utilization rate is improved.

The invention belongs to the technical field of flue gas desulfurization, and particularly relates to a limestone-gypsum-method flue gas desulfurization and dust removal device which comprises a tower body, the middle of the tower body is of a hollow structure, a flue gas inlet is formed in one side of the tower body, an exhaust port is formed in the upper end of the tower body, and a spraying device is arranged at the upper end in the tower body. The spraying device comprises a first round pipe arranged at the upper end of the middle of the tower body, a plurality of second round pipes are fixedly connected to the two sides of the first round pipe respectively, the first round pipe is communicated with the interiors of the second round pipes, a plurality of spraying heads are fixedly connected to the lower ends of the second round pipes respectively, and a first circular ring is arranged at the lower end of the spraying device. The first circular ring is fixedly connected with the inner wall of the tower body, and a plurality of elastic pieces are rotationally arranged in the middle of the first circular ring, so that the problem that the flue gas is not thoroughly desulfurized due to the fact that the flue gas is exhausted without reacting with the limestone slurry because the limestone slurry is sprayed to desulfurize the flue gas and the contact time of the flue gas and the limestone slurry is relatively short is solved.

The invention provides a 3D glass hot bending forming technology, and relates to the technical field of 3D glass preparation, and the 3D glass hot bending forming technology comprises the following steps: 1, designing and cutting plate glass according to 3D glass, and carrying out CNC finish machining, washing and drying to obtain plate original glass; step 2, loading the dried plate original glass into a mold, and preheating the plate original glass step by step in a multi-stage preheating station; 3, after the preheated and heated mold is moved to a hot pressing station, 3D glass in a preset shape is obtained by adjusting the temperature of an upper pressing plate and a lower pressing plate and adjusting the pressing speed and the load of the upper pressing plate; 4, the hot-pressed 3D glass mold is moved to annealing stations, and the minimum resilience effect of the 3D glass is achieved through step-by-step cooling of the multi-stage annealing stations; and step 5, taking out the 3D glass, cooling, cleaning, laminating, and finishing. The method is used for solving the technical problems that a traditional 3D glass hot bending process is difficult to meet the specification requirement that the size precision of a product is lower than 0.2 mm, and concave and convex points exist on the surface of the glass, and further grinding and polishing are needed.

The utility model discloses a polishing pad which is laid on a polishing table, the polishing pad is provided with a through hole penetrating through the thickness direction of the polishing pad and a groove body arranged on the upper surface of the polishing pad, polishing liquid is accumulated in the through hole and the groove body, and the total cross sectional area of the through hole and the groove body is increased in a gradient mode from the inner ring of the polishing pad to the outer ring in the radial direction. The utility model further discloses a wafer polishing system. According to the polishing pad, the through hole penetrates through the thickness direction of the polishing pad, and during polishing operation, the through hole is filled with conductive polishing liquid, so that a wafer and a polishing table are communicated, a current path is formed, and the polishing pad has good conductivity; when the polishing table drives the polishing pad to rotate, the rotating speed of the outer ring is high, the rotating speed of the center is low, when the wafer is polished, the contact time of the outer ring of the polishing pad and the wafer is shorter, the total cross sectional area of the outer ring through hole and the groove body in the polishing pad is designed to be larger, more polishing liquid can be filled, the uniformity of current passing through the wafer can also be ensured, and the wafer is uniformly polished.

The invention relates to the technical field of cell resuscitation devices, in particular to a batch acceleration cell resuscitation device which comprises a mounting base, a resuscitation box is arranged on the mounting base, and a batch resuscitation mechanism for simultaneously performing water bath heating on a plurality of cryopreservation tube bodies is arranged in the resuscitation box. A water bath heating mechanism is arranged on the inner side wall of the resuscitation box body, an automatic feeding mechanism is arranged at the upper end of the batch resuscitation mechanism, a resuscitation auxiliary mechanism for disinfecting the outer surfaces of the cryopreservation tubes is arranged at the upper end of the resuscitation box body, and the automatic feeding mechanism comprises a rectangular convex block movably mounted on a mounting disc. The automatic feeding mechanism is arranged, the feeding hopper and the L-shaped pushing plate are matched with each other, the cryopreservation pipe body is always in a horizontal state in the feeding process, liquid nitrogen in the external rotation cryopreservation pipe can automatically flow out before water bath heating, and the cryopreservation pipe can be prevented from exploding in the water bath heating process to a certain extent.

The invention discloses a method for grinding hard and brittle material micro-holes under the assistance of high-frequency ultrasonic vibration, which comprises the following steps: (1) a tool for machining the hard and brittle material micro-holes of less than 1mm is prepared, and the tool comprises a tool matrix framework provided with chip flutes and diamond abrasive particles electroplated on the matrix framework; (2) selecting a proper diamond abrasive particle size according to the pore diameter of the micro-pore below 1mm; and (3) introducing high-frequency ultrasonic vibration to carry out auxiliary machining on the micro holes. And (4) micro holes smaller than one millimeter are machined for the hard and brittle materials, and a high-frequency ultrasonic vibration auxiliary machining method with the higher frequency is used. And (5) verification is carried out for high-frequency ultrasonic vibration assisted machining of the micro-hole, and introduction of high-frequency ultrasonic vibration can guarantee the machining quality of the micro-hole and the service life of a tool.

The invention discloses a hopper mechanism and a glass product production device, and relates to the technical field of glass production. The hopper mechanism comprises a shell and a discharging hopper. The discharging hopper is arranged in the shell, a receding opening is formed in the bottom of the shell, the discharging hopper is provided with a discharging nozzle, the discharging nozzle comprises a heat preservation section and an exposed section which are connected with each other, the heat preservation section is arranged in the receding opening, the exposed section extends out of the receding opening, and the height of the exposed section ranges from 20 mm to 50 mm. Compared with the prior art, the hopper mechanism provided by the invention has the advantages that the heat preservation section arranged in the abdicating opening and the exposed section extending out of the abdicating opening are adopted, so that the roll sticking risk in the calendering process and the folding mark defect after calendering can be effectively avoided, and the forming quality of glass is ensured.

The utility model relates to the field of wire rod heat collection coil production equipment, in particular to a wire rod heat collection coil heat preservation transportation device which comprises a transferring assembly and a barrel body. The transfer assembly comprises a transport trolley, the transport trolley is provided with a bearing surface, and a positioning groove is formed in the bearing surface of the transport trolley; the bottom end of the barrel body can be inserted into the positioning groove, supporting legs abutting against the bearing face of the conveying trolley are arranged on the outer side wall of the barrel body, and a material rolling frame is rotationally arranged in an inner cavity of the barrel body. The wire rod heat collecting coil can be coiled in the inner cavity of the barrel body by utilizing the coiling frame of the barrel body, so that the contact time of the wire rod heat collecting coil and external air is shortened, the environment of the inner cavity of the barrel body provides a heat preservation condition for the wire rod heat collecting coil, and the surface temperature of the wire rod heat collecting coil can be prevented from being rapidly reduced. And then the conveying trolley can quickly convey the barrel to an annealing station, the conveying trolley positions the barrel through the positioning grooves, meanwhile, the contact area between the barrel and the conveying trolley is increased through the supporting legs, and then the stability of conveying the barrel through the conveying trolley can be improved.

The utility model provides a dynamic balance correction device of a liquid metal bearing, which comprises a dynamic balance host and a vacuum chamber, a test support and a speed measurement sensor are arranged in the vacuum chamber, a tool and a stator coil are arranged on the test support, one end of the tool far away from the test support is connected with an X-ray tube anode assembly, and the dynamic balance host is connected with the speed measurement sensor. The outer side wall of the vacuum chamber is sequentially connected with a molecular pump and a backing pump through a pipeline I; the outer side wall of the vacuum chamber is connected with an inert gas tank through a second pipeline. Compared with a traditional dynamic balance scheme, the dynamic balance correcting device of the liquid metal bearing and a correcting method of the dynamic balance correcting device of the liquid metal bearing have the advantages that oxygen in the operation environment of the anode assembly is exhausted, the contact time of liquid metal and the oxygen is shortened, generation of oxide is reduced, failure of a liquid metal sealing face is avoided, and product quality is improved.

The invention discloses a flange cylinder piece pre-forging and finish-forging integrated die and a forming method, and belongs to the technical field of die forging forming. The die comprises a press rod, a side male die, an upper die body, a lower die body, a lower die core and a push rod; the side male die and the lower die are respectively positioned on the upper and lower surfaces of the upper die; the top of the side male die is provided with a first through hole, and the bottom is provided with a second through hole. The press rod can vertically pass through the first through hole and the second through hole; the push rod is slidably connected to the end face, away from the upper mold, of the lower mold and connected with the lower mold core so that the lower mold core can move in a lower mold cavity of the lower mold, an upper mold cavity of the upper mold and the second through hole. During pre-forging, both the lower mold core and the press rod forge and press the initial blank, so that the initial blank forms a finish-forged blank; after the side male die is opened, the lower die core and the press rod drive a finish forging blank to move downwards; according to the method, the production process can be simplified and the production period can be shortened on the basis of ensuring the size precision and the forming quality of forging forming.

The invention relates to the technical field of food processing, in particular to a stuffing mixing device capable of reducing wall sticking and a using method.The stuffing mixing device comprises a mixing drum and further comprises a scraping rod used for scraping stuffing on the inner wall of the mixing drum, a mixing rod used for mixing the stuffing is arranged in the mixing drum and connected to the same driving shaft, and the scraping rod is connected to the driving shaft. The top end of the stirring barrel is connected with a supporting frame, the driving shaft is rotationally connected with the supporting frame, the supporting frame is connected with a first motor, and the first motor is used for driving the driving shaft to rotate. When stuffing is poured into the stirring cylinder, the fixed cylinder and the stirring rod are driven by the first motor to rotate, the stuffing can be stirred under the action of the stirring rod and the material stirring rod, and in the transverse rotation process of the material stirring rod, due to the action of the guide groove, the material stirring rod swings in a wave shape, so that the stuffing is stirred more uniformly. And meanwhile, the stirring rod is driven to swing, so that the stirring speed of the stuffing can be accelerated.

The utility model relates to a handheld device for small mirror surface sand blasting parts, and belongs to the technical field of mirror surface sand blasting clamping. The handheld device for the small mirror surface sand blasting part comprises a grip and a fixing plate, and the fixing plate is fixedly connected to one end of the grip. The clamping mechanism comprises two fixing blocks fixedly connected to the upper end and the lower end of the fixing plate, and a threaded rod is arranged on the inner wall of the fixing block located on the upper portion. The handheld clamp is arranged and matched with the clamping mechanism to clamp a part and then conduct sand blasting, the probability that the part slides off from the hand due to sand blasting counter-acting force is reduced, meanwhile, in the sand blasting process, the part can be driven to rotate through a rotating rod by rotating a second rotary knob, and tiny angle adjustment can be conducted on the part; and the surface sand blasting of the part is more uniform. The part is clamped through the clamping mechanism, the contact time of the glove and the abrasive can be shortened, and the probability that glove fibers fall off to pollute the surface of the part, and consequently micro scratches are caused is effectively reduced.

The invention relates to the technical field of culture devices, in particular to a cell culture box convenient for adding a nutrient solution, the cell culture box comprises a culture box, a downward moving stirring mechanism, a downward moving vibration mechanism and a heating pick-and-place mechanism are arranged in the culture box, and a sealing mechanism is arranged on the outer wall of the culture box; the downward-moving stirring mechanism comprises an electric push rod fixedly penetrating through the top end of the incubator, a hollow column is fixedly connected to the telescopic end of the electric push rod, a stirring shaft rotationally penetrates through the bottom end of the hollow column, and a plurality of stirring blades used for stirring the virulent phage colonies are fixedly connected to the outer wall of the stirring shaft. The electric push rod drives the stirring blades and the stirring shaft to move up and down through the hollow column; according to the invention, vibration treatment can be carried out on the strong bacteriophage in the stirring process through the downward-moving stirring mechanism and the downward-moving vibration mechanism, so that full contact of the strong bacteriophage and host cells is ensured, oxygen and nutrient substances in a culture medium are uniformly distributed, and a favorable culture environment is ensured.

The invention discloses a processing method of a grenade warhead, belongs to the technical field of machining, and solves the technical problems that the outline is limited, materials are wasted and a die is easy to scrap when the grenade warhead is stamped by a traditional integrated cylindrical lower die. The stamping die comprises an upper die and a lower die, the lower die comprises a left die block and a right die block which are split in half along the axis, and a die cavity matched with the outer contour of a target grenade warhead is formed after the left die block and the right die block are closed. According to the invention, the punching processing of complex contour products with equal diameters, large lower parts and small upper parts in one die cavity can be realized by twice punching and hole forming, so that the heat loss caused by die cavity replacement is avoided, the contact time length of the punch and a blank is reduced, the punch is prevented from being quenched and tempered, the subsequent machining amount is also greatly reduced, and the processing procedure is simplified; and meanwhile, the detachable lower mold is convenient to repair, the mold cavity can be remanufactured through machining, the upper mold can be repaired through the cladding welding technology, and then repeated repair and utilization of the mold are achieved.

This invention relates to transition layer materials and welding processes for welding dissimilar steel and aluminum materials, belonging to the field of welding technology. The transition layer material for welding dissimilar steel and aluminum materials of this invention comprises a copper layer, a copper alloy layer, and a zinc alloy layer arranged sequentially; the copper layer is adjacent to the steel base material, and the zinc alloy layer is adjacent to the aluminum base material; the copper content in the copper alloy layer is 62.0%-64.0%; the zinc content in the zinc alloy layer is 89.0%-91.0%; the mass ratio of the copper layer, copper alloy layer, and zinc alloy layer is (0.9-1.1):(2.3-2.7):(1.8-2.2). By sequentially setting the copper layer, copper alloy layer, and zinc alloy layer between the steel base material and the aluminum base material, a gradual transition from the steel base material to the aluminum base material is achieved, effectively avoiding the formation of brittle Fe-Al intermetallic compounds during direct welding, and enhancing the mechanical properties and durability of the welded joint.

The invention discloses an elasticizer yarn moving anti-eccentric-wear method and system based on dynamic stroke adjustment, and the method comprises the following steps: S1, a controller controls a motor I to rotate forwards and reversely at a constant speed through a frequency converter I, and the motor I drives a lead screw to be switched back and forth between forward rotation and reverse rotation; s2, forward rotation and reverse rotation of a lead screw drive a sliding block to reciprocate left and right along a guide rail, and a godet wheel is driven to reciprocate left and right; and S3, in the reciprocating motion process of the godet wheel, the first distance sensor and the second distance sensor are started by the controller. According to the invention, the stroke of the godet wheel is dynamically adjusted according to the wear condition of the godet wheel, so that the eccentric wear condition of the godet wheel is effectively reduced, and the service life of equipment is prolonged.

The invention relates to the technical field of sputum suction nursing devices, in particular to a sputum suction apparatus for pediatric nursing. Warm liquid medicine for diluting sputum is injected into the liquid storage shell, the controller controls the electric control valve to be opened to enable the liquid medicine to flow, meanwhile, the controller controls the flow of the liquid medicine through the electronic flow valve, and when the liquid medicine flows to the medical capillary plate through the connecting pipe to be wetted out, the liquid medicine can directly act on the sputum; meanwhile, medical staff can observe the dilution degree of sputum in real time through the micro camera; sputum can make contact with the positive electrode connecting piece and the negative electrode connecting piece at the same time, then a closed circuit is formed between the positive electrode connecting piece and the negative electrode connecting piece, otherwise, the closed circuit is formed between the positive electrode connecting piece and the negative electrode connecting piece, and the controller deduces whether the sputum suction pipe assembly makes contact with the sputum or not according to the on-off condition of the multiple sets of positive electrode connecting pieces and negative electrode connecting pieces; when sputum at the communicating hole of the flexible shell is sucked away, the positive electrode connecting piece and the negative electrode connecting piece are disconnected, then the sputum suction effect is judged, and practicability is better.

A method for removing antimony from high-purity ammonium metavanadate comprises the following steps: (1) preparing modified aluminum powder; (2) preparing modified aluminum powder loaded with graphene as a reducing agent; (3) dissolving the raw material ammonium metavanadate in hot water, adding the modified aluminum powder loaded with graphene as a reducing agent obtained in step (3) and sodium nitrate, reacting for more than 30 minutes until no precipitation is produced, and filtering and taking the filtrate after the reaction is completed; (4) adding ammonium metavanadate crystals to the filtrate obtained in step (3) for recrystallization to obtain ammonium metavanadate precipitation, solid-liquid separation, and drying to obtain ammonium metavanadate. The purity of the ammonium metavanadate obtained by the present invention is ≥99.9%, wherein the antimony content is <5ppm. The ammonium metavanadate product obtained by the present invention has stable quality and high production efficiency.

The utility model relates to the technical field of textile machinery manufacturing, in particular to an active rapier opening device of a rapier loom. The mobile cam mechanism includes a mobile cam and a roller follower assembly. The swing mechanism is driven by the beating-up swing shaft to slightly deflect. And the moving cam performs reciprocating linear displacement motion under the action of the traction force from the swinging mechanism. The roller driven assembly is used as an assembly foundation of the mounting seat. The rapier opening block is used for pressing the rapier receiving head of the rapier so that the rapier receiving head can release yarn and is fixed to the installation base. In the process that the roller driven assembly is controlled by the cam profile of the movable cam to execute reciprocating type linear displacement motion, the mounting base can drive the rapier opening block to be close to / away from the rapier receiving head of the rapier. Thus, on one hand, the displacement precision of the rapier opening block is guaranteed, and then the reliability and accuracy of implementation of the follow-up rapier opening action process are improved; and on the other hand, the service life of the rapier receiving head and the service life of the rapier opening block are greatly prolonged.

The present invention discloses a tea wine fermentation device and a method for preparing tea wine, wherein the tea wine fermentation device comprises: a wine cellar pool for storing fermented grains to be fermented; a partition, wherein the partition is conical, the diameter of the partition is smaller than the diameter of the wine cellar pool, and a through hole penetrating along the thickness direction is arranged on the partition. The present invention isolates tea fermented grains and grain fermented grains at the initial stage of fermentation through the partition arranged in the tea wine fermentation device, and the through hole arranged on the partition allows microorganisms to contact tea leaves through airflow during the fermentation process, and the liquid product of tea fermented grains needs to accumulate to a certain extent before it drips and contacts grain fermented grains, thereby reducing the contact time of the liquid product of tea fermented grains and grain fermented grains, and increasing the wine yield of grain fermented grains.

The embodiment of the utility model provides a tail coke extinguishing and collecting device of a 6m top-charging coke oven, which comprises a material receiving hopper, an upper water tank, a high-pressure water pump and a tail coke chute which are arranged on a coke barrier car, and a coke-water separating hopper arranged on a coke quenching trolley, the receiving hopper is located below a coke oven tail coke outlet, the tail coke chute is of an inclined groove-shaped structure with two open ends, and the top end of the tail coke chute is connected with the receiving hopper; the upper water tank is communicated with the top end of the tail coke chute through a high-pressure water pump; a feeding hole is formed in the top of the coke-water separation hopper, is positioned below the tail coke chute, and is larger than the bottom end of the tail coke chute; and a screen for separating tail coke from water is also arranged in the coke-water separation hopper. According to the technical scheme, the tail coke entering the tail coke chute is scoured, extinguished and transported through the high-pressure water, so that the problem of high failure rate caused by direct contact between a scraper mechanism and the tail coke is avoided, the normal operation of production is further ensured, and the tail coke treatment capacity is improved.

The lithium battery air compressor comprises a base, an air compressor box body and an air storage tank, a containing cavity is formed in the air storage tank, a mounting seat is arranged on the air storage tank, a containing groove is formed in the mounting seat, the containing groove communicates with the containing cavity, a water collecting plate is arranged on the air storage tank and located in the containing cavity, one end of the water collecting plate extends into the containing groove, and the other end of the water collecting plate extends into the air storage tank. The water collecting plate inclines upwards in the direction away from the mounting base. After accumulated water in the air storage tank is discharged through the manual valve, residual water in the air storage tank can be volatilized in the storage and use process of the air compressor, the volatilized water is condensed and gathered when meeting the water collecting plate and flows into the containing groove along the water collecting plate to be collected, and therefore the residual water is transferred from the air storage tank to the mounting base; therefore, the contact time of the moisture and the gas storage tank is shortened, corrosion of the moisture to the gas storage tank is inhibited, and the service life of the gas storage tank is prolonged.

The invention relates to the field of cyclohexanone-oxime gas-phase Beckmann rearrangement reaction, and discloses a cyclohexanone-oxime gas-phase Beckmann rearrangement reaction method and application thereof, and the method comprises the following steps: (1) atomizing an alcoholic solution of cyclohexanone-oxime to form atomized liquid drops, and then contacting with high-temperature carrier gas for vaporization to obtain a vaporized raw material; the average particle size of the atomized liquid drops is less than 80 microns, and the average residence time of the cyclohexanone-oxime does not exceed 2s; (2) preheating the vaporized raw material, and then contacting the vaporized raw material with a catalyst in a fixed fluidized bed reactor to carry out a gas-phase Beckmann rearrangement reaction; wherein the D50 of the catalyst is 60-100 [mu] m, and the wear index is not higher than 3% / h; and (3) cooling a product of the gas-phase Beckmann rearrangement reaction, and then carrying out gas-liquid separation. The method can effectively improve the conversion rate of cyclohexanone-oxime and the selectivity of caprolactam, has few byproducts and good reaction stability, and can be used for evaluating the performance of a laboratory fluidized bed catalyst.

The invention discloses a sildenafil oral soluble film agent as well as a preparation method and application thereof. The sildenafil oral soluble film agent is prepared from the following materials: sildenafil citrate and / or pharmaceutically acceptable salt thereof, a methylacrylic acid methylamino ester copolymer, a macromolecular film-forming material, an anti-sticking agent, vitamin C, a plasticizer and a humectant. The oral soluble film agent not only can effectively cover the bitter peculiar smell of sildenafil, but also has good taste and short disintegration time, and solves the problem that a traditional sildenafil citrate oral soluble film is bitter in taste in the taking process. In addition, the oral soluble film agent also has good physical properties and drug stability, and can meet the requirements of storage, transportation, clinical use and the like of drugs.

The application discloses a double-side shadow-eliminating touch screen conductive glass, which comprises a glass substrate, recesses are formed in the upper and lower ends of the glass substrate, an ultraviolet absorption layer, an interference layer and an indium tin oxide film layer are sequentially and fixedly arranged in the recesses from inside to outside, a liquid storage cavity is formed in the sliding block, transparent optical glue is arranged in the liquid storage cavity, a plurality of groups of positioning screws are movably connected in the connecting plate, the positioning screws pass through the insertion holes and extend into the connecting cavities, and the positioning screws are in contact with the sliding block; the interference layer and the ultraviolet absorption layer arranged below the indium tin oxide film layer can eliminate shadows, the sealing of the rubber sealing blocks and the drying of the drying agent can prevent the indium tin oxide film layer from being contacted with external air, the mounting speed of the glass substrate and the glass protective screen is accelerated, the contact time of the indium tin oxide film layer and the external air is reduced, and the situation that the indium tin oxide film layer cannot be used after absorbing water in the air is prevented.

The molecular sieve adsorption chamber device comprises an inner tank body and an outer tank body, and an interlayer space is formed between the inner tank body and the outer tank body in a spaced mode; a molecular sieve adsorption chamber is arranged between the spherical tank walls of the inner tank body and the outer tank body at one end of the tank box tank car, and a space filled with molecular sieve particles is formed in the molecular sieve adsorption chamber; the molecular sieve adsorption chamber extends into the interlayer space by taking the surface of the inner tank body or the outer tank body as a bottom layer, the extension length of the molecular sieve adsorption chamber is smaller than the spacing of the interlayer space, a relatively flat molecular sieve adsorption chamber structure with large coverage area and small height is formed, and a surface layer structure for gas or moisture to pass through is formed on one side far away from the bottom layer; compared with a plurality of independent small cylinders, the large circular ring / disc structure type molecular sieve adsorption chamber has the advantages that the volume is larger, the effective contact area is greatly increased, more molecular sieves are filled, the vacuum service life can be better prolonged, and the adsorption is more sufficient.

The invention discloses a safe gas mixing device and application thereof in the field of high-concentration hydrogen mixing. The gas mixing device is suitable for mixing hydrogen with the volume purity larger than or equal to 99.99% and combustion-supporting gas, and the combustion-supporting gas is selected from at least one of air and oxygen. The gas mixing device comprises a tank body, a gas mixing unit, a gas distribution plate, a hydrogen inlet unit, a combustion-supporting gas inlet unit, a catalyst setting unit, a temperature measuring unit and a mixed gas outlet unit. When the gas mixing device is used for mixing high-concentration hydrogen and air (or oxygen), due to reasonable structural layout and metal filler filling in the device, not only can the gas be uniformly mixed, but also the explosion risk can be fully reduced. The device and the method are simple and easy to operate, good in effect, low in cost and high in safety, and can be applied to the hydrogen catalytic combustion process.