52results about How to "Significant practicality" patented technology

The invention provides an intelligent comprehensive monitoring and security integrated management system for a parking garage. The system solves the comprehensive intelligent management problems of related automatic monitoring, automatic detection, display, different languages and voices, communication, dispatching, guide, digital quantity identification, security, forbidding and passing, charging, statistics, self diagnosis and maintenance and the like of various self-propelled and automatic three-dimensional mechanical parking garages. The system has significant meanings for improving the monitoring, security and management levels of various parking garages, promoting static traffic modernization construction and increasing the social and economic benefits of the parking garages.

This invention relates to a long-distance monitoring and alarming system of the environmental water quality. It is mainly composed of the sensing detection assembly, the data collecting / processing device, the wireless network communication module assembly and the center station of environmental water quality monitoring. The sensing detection assembly is made up of varies water quality indicating detectors and the corresponding sensor feeler. The data collecting / processing device has the functions of collecting and processing the simulate signals of immediately detected various water quality indexes, and transforming them into digital signals. The monitoring center station has the functions of immediate storing and analysis processing, sending out indicating alarm in time when the condition of above-norm., and in virtue of public radio communication network, carrying out mutual data transmitting.

It is a sort of decoupling control system of chemical multivariable procedure, it makes up of nXn dimensional decoupling controller matrix and multiple signal mixers, of which, n is output dimension of multivariable controlled process. It makes use of deviation signal as feedback regulated information of system output response, the deviation signal is from input signal of n dimensional given value of system default point and n dimensional output measuring signal of actual controlled process, after it is operated by decoupling controller matrix, the n dimensional control output signal is sent to n dimensional input adjusting device of controlled process, thereby achieve the objective of asymptotical tracking system's set point inputs signal and restrains load interference signal. This control system enable to maintain stability of robust, and fit in with the modeling error of actual controlled process and perturbations of procedural parameter in greater extensiveness.

The invention discloses a deformable large-size soil box structure of true triaxial experiment of soil engineering. The deformable large-size soil box structure is mainly used for large-size model experiment of the true triaxial experiment of the soil engineering. The deformable large-size soil box structure comprises a workbench, side loading plates, a normal loading plate and a bottom plate, wherein the four vertical side loading plates for bearing a horizontal load encircles to form a soil box main body, adjacent side loading plates are connected by a side guide device, the normal loading plate is arranged above the soil box main body, a normal constraint framework is arranged at the periphery of the normal loading plate, and a normal loading plate guide device is further arranged on the normal loading plate. With the combined application of the normal constraint framework and the normal loading plate, vertical limited deformation of the soil box can be achieved, and direct-angle connection between plates is ensured; by ingenious design such as the side loading devices, the side guide devices and a side sliding device, free and limited deformation of the soil box and real-time coaxial loading of a horizontal direction are achieved, the running safety and reliability of the whole true triaxial experiment system is ensured, and the deformable large-size soil structure has remarkable economic and practical value.

The invention discloses a traffic conflict prediction method based on space-time proximity, which belongs to the technical field of road traffic safety prediction. In view of limitations of the existing road traffic accident prediction method, in order to avoid the problem that the prediction method based on traffic accident data statistics does not have sufficient basic data, the traffic conflict prediction method based on space-time proximity is thus brought forward. The method comprises the following steps: 1, based on the space-time proximity, a speed difference and a vehicle-following distance serve as conflict severity two-dimensional evaluation indexes; 2, according to the two-dimensional evaluation indexes of the vehicle-following distance and the speed difference, the conflict severity is determined; 3, according to the two-dimensional conflict evaluation indexes and the determined actually-measured construction area data, VISSIM simulation software is applied to building a conflict simulation model, and the traffic flow operation condition in the construction road section is simulated; and 4, according to the simulation result, the traffic conflict prediction based on the space-time proximity is obtained. The method of the invention is used for traffic conflict prediction.

The invention discloses an ultrasonic welding machine. The ultrasonic welding machine comprises a workbench, an ultrasonic welding head, a cooling device and clamping tables. A welding head holder is arranged on the upper surface of the workbench. A controller is arranged on the front side of the welding head holder, a first air cylinder is arranged in the welding head holder, and the lower portion of the front side of the welding head holder is in sliding connection with the ultrasonic welding head. The top of the ultrasonic welding head is fixedly connected with the first air cylinder. The cooling device is arranged on the periphery of the ultrasonic welding head. Sliding grooves are formed in the upper surface of a piston rod of a second air cylinder. Sliding blocks are arranged at the bottoms of the clamping tables respectively. The clamping tables slide in the sliding grooves and are fixed through bolts. Movable stand columns are connected with a motor through movable devices. Pressure sensors are arranged on the inner sides of the movable stand columns. The effect of intelligently controlling the stand columns to be close to the clamping stables can be achieved, and the ultrasonic welding machine can be suitable for welding pipelines with different diameters; the service life of the ultrasonic welding head and the service life of the cooling device can be prolonged easily, and operation by a single person can be better facilitated through a control switch; the ultrasonic welding machine is simple in structure and has remarkable practicality and efficiency.

The invention provides a golf club with adjustable length, which comprises a club body and a ball head. The lower end of the club body is fixedly combined with the ball head, and a holding end is formed at the upper end of the club body to match with connecting rods with different lengths; the connecting rod is detachably and fixedly connected with the club body and spliced with the holding end of the club body into a whole; and the connecting rods with different lengths are respectively connected with the holding end of the club body to form golf clubs with different lengths. The golf club with adjustable length is convenient to adjust the length of the golf club according to the height of a user, and the connecting rods with different lengths are suitably respectively connected along with the growth of children in a growth period to adjust the total length of the golf club so as to satisfactorily meet the personal requirements.

The invention discloses a real-time visual feed control method for compaction quality of roller compacted concrete on-site construction. The method comprises the steps of model establishment, data acquisition and processing and information feedback online control. The method comprises the steps that a 3D dynamic model of an operation unit in the building structure construction process is constructed, random actual measurement point data of a construction operation layer are collected, compaction degree evaluation indexes of the operation layer unit are obtained through an analysis model, and compaction quality representation of the whole operation layer is obtained; and the visual information is dynamically and comprehensively displayed on the 3D model of the construction layer unit in real time. According to the invention, accurate representation of the actual working condition on site is achieved by adopting the rolling process parameters such as the moisture content of the real-timemixing material, the stress wave velocity of the current rolling layer when colling is completed, and rolling vehicle positioning data, the model precision is high, the rolling quality condition canbe visually mastered in real time, remotely, relatively accurately and quantitatively, a feed control decision is formed, and the method has good adaptability to different construction working conditions.

The invention provides an organization document auxiliary generation method. The method comprises the following steps: generating an organization document auxiliary generation system; performing official document creation based on an organization official document auxiliary generation system; and performing intelligent error correction on the official document. The organ document auxiliary generation device comprises an organ document auxiliary generation system creation module; an official document creation module; and an intelligent error correction module. A corpus-based computer-aided writing system is constructed by utilizing the large-capacity storage, rapid processing and convenient man-machine interaction capabilities of a computer, sentence patterns and example sentences from a real corpus are recommended to a user in real time in a man-machine interaction form, assistance is provided for the core activity of sentence making, the technical blank of a corpus-based computer-aided writing system is filled up, the problems that in the prior art, provided information is not accurate, the efficiency is low, and writing auxiliary services are not in place and incomplete are solved by adopting the one-stop intelligent official document writing auxiliary method, and the writing requirement is comprehensively met.

The invention solves the technical problems that due to the fact that in the prior art, spherical pairs produced by press machine manufacturers of the China are mostly and directly used after finish turning without grinding, the matching faces of each spherical pair cannot make full contact, oil film cannot be easily formed, even when the spherical pairs are used after grinding is carried out, grinding is carried out by manpower, and due to the fact that manual grinding is adopted, the matching faces are uneven in grind, time and labor are wasted, and working efficiency is low. The invention provides a dedicated device for automatic grinding of a spherical pair. The dedicated device for automatic grinding of the spherical pair improves processing quality and processing efficiency of the spherical pair. According to the technical scheme, an automatic grinding device for the spherical pair comprises a rack assembly, a sliding frame assembly, an upper transmission assembly, a hoisting assembly, a clamping assembly and a lower transmission assembly, wherein the sliding frame assembly is arranged on the rack assembly in a sliding mode, the upper transmission assembly is installed on the sliding frame assembly to drive the hoisting assembly to swing, the hoisting assembly is arranged on the sliding frame assembly, and the lower transmission assembly is installed on the rack assembly to drive the clamping assembly to rotate.

The control system comprises a response controller of given value, a controller for stabilizing response of given value, disturbance observer, identification models of stable process in controlled transtage and astable process in last stage, and signal mixer. Open loop control mode is adopted in given value response. Using proportion or PD controller setup at forward path stabilizes Astable cascading process. Based on amount of deviation between output of id model of process in transtage and actual output in transtage as well as amount of deviation between stabilized output of id model of global cascading process and actual output of process in last stage, influence of interference signal in load is eliminated through modifying treatment from the disturbance observers in innerring and outer ring. The control system can keep favorable robustness and stability, adapt to modeling error of cascading processes and perturbation of procedural parameter in bigger range.

The invention discloses an integrated in-situ soil formation treatment system for river silt. The integrated in-situ soil formation treatment system comprises a base platform, wherein a silt homogenization box, a dehydrator, a dehydrated silt mixer and an electric control cabinet are fixedly mounted on the base platform, one side of the silt homogenization box is connected with a mud input pipe, afirst mud pump is arranged on the mud input pipe, a stirrer and a second mud pump are arranged in the silt homogenization box, the second mud pump is connected with a mud output pipe which is connected with the dehydrator, the dehydrator is connected with the dehydrated silt mixer through a silt guide trough, an extruding screw is arranged in the dehydrated silt mixer, and a mixer discharge portis formed in one end of the dehydrated silt mixer and connected with a soil discharge pipe; the dehydrator is connected with a first chemical adding box through a first chemical adding pipe, and one side of the dehydrated silt mixer is connected with a second chemical adding box and a third chemical adding box. The integrated in-situ soil formation treatment system for the river silt can effectively solve the problems of insufficient desilting site for an urban river as well as follow-up treatment and recycling of the silt, and has remarkable environmental benefits and practical values.

The invention discloses a skin biopsy trepan, belonging to a medical instrument. The skin biopsy trepan comprises a drill rod, a drill bit and a handle, wherein a piston and a push-pull rod are arranged in the drill rod; the handle is vertically arranged on one side of the upper end of the drill rod; a sliding pin is arranged in the handle and is provided with a wedged head for positioning the push-pull rod; the drill bit comprises a drill bit main body, a circular cutter and a slide bushing; the slide bushing is positioned outside the drill bit main body; a return spring is arranged below the slide bushing; the circular cutter is arranged outside the slide bushing; the lower end of the drill bit main body is provided with a perforated plate; and the lower end of the perforated plate is provided with a rubber pad. The skin biopsy trepan has the advantages of rational structure, convenience in operation and capabilities of greatly improving the sampling efficiency of pathological specimens and reliving the pain of a patient.

The invention relates to a novel marble ceramic product containing penetrating ink and a manufacturing method of the novel marble ceramic product. The marble ceramic product comprises a clay body layer and a surface layer, wherein the surface layer is a surface slurry layer containing colored patterns formed by the penetrating ink. The novel marble ceramic product is characterized in that lower concave seams with inhomogenous lengths, widths and sizes, and / or concave regions with irregular shapes are formed in the surface of the product, the number of the lower concave seams and / or the concave regions with irregular shapes for each square meter is greater than or equal to 10, the length of the lower concave seams and / or the concave regions with irregular shapes for each square meter is greater than or equal to 10mm, and the width of the lower concave seams and / or the concave regions with irregular shapes is less than or equal to 1mm. The condition that natural patterns imitating stone grains, a plurality of precise lower concave line seam grains and / or concave patterns with irregular shapes are produced on the surfaces of clay body raw materials through digital printing to produce marble pattern grain imitated ceramic brick products is realized, and the manufacturing method is realized.

The invention provides a method for bonding seamless joints of a rubber conveying belt and relates to a connecting method for rubber belt joints of a belt conveyor. The joint bonding process comprises the following steps: (1) determining an overlapping length of the joints; (2) measuring and marking; (3) cutting; (4) raking the joints; (5) polishing, cleaning, washing and drying; (6) brushing glues; (7) drying; and (8) laminating and hammering; and the seamless jointing method is characterized in that jointing process further comprises the following steps: (9) polishing a sealing reinforced strip recess in a seamless joint of the rubber conveying belt; (10) brushing glues to the recess; (11) putting a sealing reinforced strip into the sealing reinforced strip recess and hammering the sealing reinforced strip; and (12) curing the rubber conveying belt and putting the rubber conveying belt in use. Through the adoption of the method provided by the invention, the traditional joint bonding method is perfected and improved, a very good effect is obtained especially under severe working conditions, and a seamless reinforced rapid bonding joint is formed.

The invention discloses a vertical step type bicycle. The bicycle comprises a handlebar assembly, a front wheel assembly, a rear wheel assembly, a pedal and a frame; the frame comprises a longitudinalfixed shaft, a rotating sleeve rotationally sleeves the longitudinal fixed shaft and is sleeved with a pedal connecting rod, a front unidirectional wheel and a rear unidirectional wheel from front toback in sequence, the front unidirectional wheel and the rear unidirectional wheel are a pair of mirror symmetrical driving wheels which are internally provided with single-acting ratchet mechanismsthrough meshing and externally provided with oblique teeth, an opening is formed in the portion, located between the front unidirectional wheel and the rear unidirectional wheel, of the rotating sleeve, a transverse fixed shaft is vertically fixedly arranged on the longitudinal fixed shaft located in the opening, the transverse fixed shaft is rotationally sleeved with a driven wheel, oblique teethmatched with the driving wheel are arranged on the driven wheel, the driven wheel is in transmission connection with a chain wheel sleeving the end of a rear axle, and the pedal is rotationally connected with the pedal connecting rod through a straight shank. The purpose that the bicycle is driven through a stand walking mode is achieved, and the body-building exercise effect is achieved.

The invention discloses an aftertreatment purification method for 3-[(3-amino-4-methylamino benzoyl)(pyridine-2-yl)amino]ethyl propionate. The method comprises the following steps: reducing 3-[(3-nitro-4-methylamino benzoyl)(pyridine-2-yl)amino]ethyl propionate hydrochloride with metal zinc in an acetic acid / water system so as to obtain a mother solution; and filtering and washing the mother solution, regulating the PH of the mother solution with alkali liquor, extracting the mother solution with a first organic solvent, condensing, dissolving the mother solution with a second organic solvent, absorbing by use of silica gel, eluting with a third organic solvent, and condensing to obtain a white solid, namely 3-[(3-amino-4-methylamino benzoyl)(pyridine-2-yl)amino]ethyl propionate. According to the aftertreatment purification method, a silica gel adsorption method and an eluting method are adopted to remove pigments and byproducts generated in reaction, so that aftertreatment is simple, the target organic product purity is improved and a high-purity target compound is obtained.

The invention proposes a method for generating a ranking list. The method comprises the steps: configuring a first data source, obtaining first data from the first data source, obtaining the first data from the first data source, enabling the first data to comprise initial data related to a ranking list object and a ranking list event, enabling the ranking list event to be related to the ranking list object, generating a ranking list configuration according to the first data, and generating the ranking list according to the ranking list configuration. The invention further provides a ranking list system, wherein the system has expandability, and requirements of different types of ranking lists are flexibly met in a configuration mode, so that manpower and material resources needed by development of different types of ranking lists are reduced, and the development cost is reduced; meanwhile, the development period is shortened, and the ranking list generation efficiency is improved.

The invention discloses a standing operation stud welding device which comprises a welding gun and a standing auxiliary platform. The standing auxiliary platform comprises a base, a stand column, a 360-degree horizontal rotating arm, a lifting rod and a balance mechanism. The welding gun is fixedly connected to the bottom end of the lifting rod through a connecting seat. A handheld part and a welding gun starting and stopping switch are arranged on the lifting rod. The welding gun starting and stopping switch is connected with a driving circuit of the welding gun through a wire. By means of the standing operation stud welding device, the welding gun is fixed to the designed standing auxiliary platform so that the designed standing auxiliary platform can carry the welding gun to do 360-degree horizontal rotation motion and vertical lifting motion, standing stud welding operation is achieved, in addition, accurate positioning of a welding site can be ensured, in addition, handheld movingcan be achieved, the occupied space is small, the standing operation stud welding device can meet the use requirements of various welding occasions and particularly can be used for field stud weldingof large steel structure workpieces on construction sites such as buildings, bridges and rails, the application range is wide, and use is flexible and convenient.

The invention discloses an embroidery signboard and a manufacturing process thereof. The embroidery signboard comprises an embroidery base material and an embroidery pattern, and identification information is printed in a light color area of the embroidery pattern or a blank area in the embroidery pattern. The manufacturing process of the embroidery signboard comprises the steps that an embroidery technology is adopted to manufacture the embroidery pattern on the embroidery base material, and a printing technology is adopted to print the identification information in the light color area of the embroidery pattern or the blank area in the embroidery pattern. The equipment vacancy rate can be effectively decreased, so that the service life of an embroidery machine is prolonged, the operation efficiency of the embroidery machine is significantly improved, and the requirements for an operator and the working complexity can be lowered; and especially, clear manufacturing of the complex identification information can be realized, operation is easy, the manufacturing cost is low, the manufacturing efficiency is high, the quality can be ensured, universality is high, and high practical valve is realized.

The invention provides an inhalational anaesthesia system capable of reserving autonomous breathing. The inhalational anaesthesia system is composed of an anaesthesia machine, a negative pressure attraction apparatus, an inhalation anaesthesia head shield and a monitoring apparatus, wherein the inhalation anaesthesia head shield comprises a head shield body (1) and an accessory (11), the head shield body (1) is provided with a monitoring lead wire connection apparatus (2), a gas monitoring apparatus (3), a sound play apparatus (4), a transparent observation window (5), a gas elimination connection apparatus (6), a negative pressure attraction connection apparatus (7), a gas supply connection apparatus (8), an intercommunication apparatus (9) and a sealing ring (10). The inhalational anaesthesia system can reserve the autonomous breathing, does not cause any damage, overcomes the disadvantage of poor ventilation sealing performance of a conventional face shield and a laryngeal mask, accelerates anaesthesia induction and wakeup, and can observe the anaesthesia state of a patient in real time in an anaesthesia process. The inhalational anaesthesia system has the advantages of safety, efficiency and simplicity.

The invention discloses a claw-wheel-shaped load-adjustable weightlifting training device, wherein a stand column is fixed on the ground; a load sliding column can flexibly move up and down in the stand column by being located and supported by a rolling column; the front of the load sliding column is connected with a lift-holding handle, and the stroke of the lift-holding handle is decided by the range of an opening of the front of the stand column; a rack is arranged on the back of the load sliding column, and a one-way claw gear shaft is driven by the rack; one-way claw matching transmission is adopted between the one-way claw gear shaft and a one-way claw gear. According to the claw-wheel-shaped load-adjustable weightlifting training device, the training functions of lifting the weight loaded on a barbell and no-load putting down as well as no-load squatting and load standing up are ingeniously replaced by the clutch transmission way of positive clamping transmission and reverse sliding separation generated by a one-way claw gear transmission mechanism, so that the safety is improved; heavy discs of the barbell are replaced by inertia load and adjustable friction load, so that the same load training effect is achieved; furthermore, the loading has diversity, dynamic property and interestingness, so that the device has remarkable practical value and market application prospect.

The invention discloses a salicylic acid berberine type alkaloid quaternary ammonium salt compound represented by a general formula I, a preparation method, a solubility characteristic and a pharmaceutical composition thereof, and application of the salicylic acid berberine type alkaloid quaternary ammonium salt compound in preparation of medicinal products. According to the invention, the salicylic acid berberine type alkaloid quaternary ammonium salt compound represented by the general formula I can be prepared by an organic synthesis method, shows obvious alcohol-water mixed solvent solubility, can be conveniently prepared on a large scale, has remarkable ulcerative colitis resisting activity, has the characteristics of no toxicity or low toxicity, and can be used for preventing, relieving and / or treating ulcerative colitis.

The invention relates to a carrier class merchandise network platform and a use method thereof. The carrier class merchandise network platform comprises a network platform module, an online module and at least one merchandise management module, wherein the network platform module is used for providing a plurality of carrier class merchandise information and is provided with an encryption and decryption unit and a verification unit; the online module is used for a user terminal to carry out network online to the network platform module, receives the information provided by the network platform module and transmits the indication and data of the user terminal; the merchandise management module carries out online with the network platform module and is used for managing carrier class merchandises; and the encryption and decryption unit is used for encrypting and decrypting the indication and data of the user terminal, and the verification unit is used for verifying the data provided by the user terminal. The invention also provides the use method of the carrier class merchandise network platform. By the integration of the network platform module designed by the invention, the user terminal can select and purchase merchandises at any time and in any place, and can communicate with the correlative manufacturer of the merchandises by the platform to obtain better price.

The invention belongs to the technical field of animal husbandry propagation, and particularly discloses a diluent used for boar semen and a preparation method thereof. The diluent used for boar semenis prepared from 2.85-3.15% of one-molecule crystal water glucose, 0.4465-0.4935% of one-molecule crystal water citric acid, 1.2635-1.3965% of two-molecule crystal water sodium citrate, 0.02375-0.02625% of povidone-iodine, and the balance of water for injection to 100%. The preparation method comprises the following steps: taking glucose, citric acid and sodium citrate of formula amount and sequentially dissolving in the water for injection, adding 0.25% of activated carbon for needle of preparation amount, boiling for 15min, filtering to remove carbon, and then adding povidone-iodine of formula amount for dissolving, adding the water for injection to 100%, uniformly stirring, and after pH and content are tested to be qualified, filtering, potting, and sterilizing at 105-108 DEG C for 30min by hot pressing, thus obtaining the diluent used for boar semen. The invention provides a boar semen diluent product which has a killing effect for bacteria, virus, fungus, protozoa and spore for swine artificial insemination, can effective avoid the risk of infection caused by artificial insemination, and is remarkable in practical effect and economical benefit.

The invention discloses a star-wheel-shaped load-adjustable weightlifting training device. A stand column is fixed on the ground; a load traveller is positioned and supported by a pin roller to flexibly move up and down in the stand column; the front of the load traveller is connected with a lifting handrail; the travel of the lifting handrail is decided by the opening range of the front of the stand column; a rack is mounted on the back of the load traveller and drives a gear shaft; the gear shaft is in key connection with a star wheel to form a whole body; the star wheel, a steel cylinder and a resilient strip are combined to form a unidirectional gear driven by a unidirectional transmission mechanism. In the star-wheel-shaped load-adjustable weightlifting training device disclosed by the invention, the star-wheel-shaped unidirectional transmission mechanism is used to substitute a barbell to act on the training functions of loaded lifting, no-load putting down, no-load squat and loaded standup and can improve the safety performance; the inertia load and the adjustable friction load are used to substitute a heavy barbell disk, so that the equal loaded training effect is achieved, and meanwhile the load is diversified; the dynamic rotation of a flywheel brings about enjoyment; the star-wheel-shaped load-adjustable weightlifting training device is obvious in practical value and application prospect in the market.

The invention discloses a rapid detection method for botrytis cinerea on drug resistance of multiple agents. The rapid detection method includes: firstly, preparing a botrytis cinerea detection kit; secondary, performing field sample for in-situ detection; finally, performing rapid detection on drug resistance of the multiple agents by determining whether or not bacterial strains generate drug resistance according to normal growth of pathogenic bacteria. With the method, shortcomings that a traditional drug resistance detecting technology of the pathogenic bacteria needs field sample, laboratory separation and purification, time consumption and labor consumption in inoculating the pathogenic bacteria into drug-containing medium or plant tissue sprayed with the agents and one-time detection is limited in number are overcome; the rapid detection method has the advantages of being timesaving and laborsaving, convenient in operation, free of sampling, capable of detecting the agents in place simultaneously rapidly and accurately, and remarkable in practical value and generalizability.

The invention discloses a post-treatment purification method of a pyrrole-pyridine-pyrrole compound. The method comprises the following steps: removing a solvent under a reduced pressure after the organic synthesis reaction of the pyrrole-pyridine-pyrrole compound is completed in order to obtain a crude product, adding a dissolving amount of a first organic solvent to the crude product, carrying out ultrasonic treatment to dissolve the crude product, adding a second organic solvent after the crude is completely dissolved, carrying out ultrasonic treatment to achieve dissolving, precipitating the target compound from the obtained solution, performing suction filtration, and washing the obtained precipitate with a mixed solution of the first organic solvent and the second organic solvent toobtain the high-purity pyrrole-pyridine-pyrrole compound, wherein the addition amount of the second organic solvent is 1-5 times the volume of the first organic solvent. The method adopting the ultrasonic dissolving-crystallizing process has the advantages of removal of byproducts and pigments formed in the organic synthesis reaction, simplicity in post-treatment, improvement of the purity of theorganic target product, and obtaining of the high-purity target compound.

The invention discloses a vacuum furnace for continuous production. The vacuum furnace comprises a vacuum furnace body, a temperature controller, a vacuum acquisition and detection instrument and an inflation system. A material channel in the vacuum furnace body comprises a feed zone, a product discharge zone and a reaction zone, is good in airtightness and has no magnetism. Sealing ring iron baffles arranged at the two ends of the reaction zone can open or close the channel under the action of magnetism of magnets and have good sealing performance. A thermocouple is installed in the middle of the vacuum furnace body, and the bottom end of the thermocouple abuts against a reactor so that the reaction temperature can be accurately measured and controlled. The vacuum furnace is vacuum equipment which can maintain the constant temperature and constant low pressure of a reaction system and also can achieve continuous production, so that the heating time and cooling time needed for producing products are greatly shortened, the production cycle is shortened, energy consumption is reduced, energy efficiency is improved, airtightness is good, the material channel is very convenient to open or close, the reaction temperature and pressure are not influenced, and the vacuum furnace has significant practical value and broad market application prospects.

A lifting method for a frame bridge box body comprises the steps of carrying out joint cleaning on settlement joints in a picking mode, then using a water drill to drill holes downwards at the positions and injecting grout to separate U-shaped grooves from the box body; forming grout stopping walls in soil bodies at the positions of the front end and the rear end of the box body; forming a plurality of reinforcing holes, lifting holes and complementary holes in the rear portion, the front portion and the middle of a bottom plate of the box body respectively; utilizing a grout injecting machine to carry out grouting operation on the holes and the like. By means of the lifting method for the frame bridge box body, approaches on the two sides of the box body are not needed to be disassembled, and the use amount of cement is saved by 20% compared with an existing method so that the construction cost can be greatly reduced, the construction period can be shortened, and the construction difficulty can further be reduced. Meanwhile, the lifting method for the frame bridge box body has the advantages of being high in operation performance and safety performance and the like, and has remarkable advancement and practicality.