Dryer technology develops the current situation and tendency

The treatment quality of 1 dryer looks from the production process of dryer, the treatment quality of dryer suffers technical level to reach those who use a trade to restrict. The applied trade of dryer is very much, ask to equipment quality highest is pharmacy industry. As a result of the characteristic of pharmacy industry, qualitative to using the material of dryer, structure and treatment quality have particular demand, the equipment treatment quality that because this requirement makes a trade,offers is higher. It is food industry next, food industry has strict wholesome index to ask to dryer and dry system, the processing level of facility construction and rolled steel is accordingly higher. Quality demand is relative not tall is the partial equipment in chemical industry production. The dosage that chemical in all industries industry is equipment no matter or type are most the most complex, what should say the dryer of chemical industry has special demand is stricter also, but compare with afore-mentioned two industries postures slightly a few lower. From most every time total quality sees dryer, most equipment armor plate passes polishing processing, welding line uses argon arc solder (stainless steel) , welding line also passes processing, some factories are used to straight welding line and link welding line automatic or semi-automatic solder, make equipment quality gets assuring. In the plant that visit, changzhou beautiful sends factory of the dryer that make bead, Changzhou dryer limited company machines one pace quality is better, beautiful sends factory of the dryer that make bead to make the equipment of bead certain exit is measured, shanghai is big plain the treatment quality of former company is better also. 1.

The structure of 2 drier as our country dryer introduce reach the technical communication between international, foreign dryer type is affecting our country ceaselessly, main show is in the new model of our country of the last few years and new structure the following kinds. Heat of the Tibet inside ① is in charge of type fluid-bed drier this kind of drier was to change before the method that fluid-bed quantity of heat brings by sirocco entirely, conduct heat through interior canal, make partial quantity of heat comes from the conduction of hot medium inside the canal to conduct heat, because this improved thermal efficiency greatly. According to data introduction, traditional fluid-bed thermal efficiency is 39.

7% , and inside canal Tibetan heat is 72.

5% . Below the condition that completes identical crop, bed level is accumulated by 72.

5m2 is reduced 14.

42m2. Su Ershou company of Switzerland and instrument of Japanese Nai good chance make place have this kind of facility, hot medium is vapour, conduction oil to wait commonly. At present Shandong day force trial-produce of dryer limited company this kind of equipment, the effect quite beautiful. Limited company of dryer of Hangzhou Qian Jiang also developed this device, but inside Tibet heats board type, according to introducing, conduct heat coefficient is very tall, also obtain favorable result. The crust of drier of check of ② check drier and transmission way and bowl drier are very similar, but in its in-house and homocentric arrange 1~5 layer check. What check crosses drier is full-length, water vapour or other hot medium are understood inside, conduct conduct heat with convection and use. Thermal efficiency is tall, always pass thermal efficiency to be able to amount to 80%~90% , special apply to dry temperature to be in the stock under 150 ℃ . Abroad has quite representative if Japan is big plain change formerly machine company limited, home also has production in Jilin. Basically use at groovy broken bits to mix mineral dry, obtain delectable result. Drier of ③ flash vaporization serves as the drier that introduced our country 1989, it has the capacity that handles stock of ropy shape filter cake, can receive powdery body stock directly. In our country red east some chemical plant, Shanghai catchs dye factory, Jilin change limited company of chemical industry of Ba Sifu dye of 8 factories, Shanghai to have introduced facility. At present the company of An Haida Nuo with Denmark is this kind of type delegate. Absorb this technology through be being digested for years, the equipment our country of medium-sized and the following dimensions has a lot of manufacturer to be able to be made. Development prior unit is versed in like iron mountain essence (group) academy of chemical industry of Inc. , Shenyang, northeast university. At present industrialized drier makes more be liking twinkling of lukewarm state city amounts to dryer limited company, Jiangsu to save Jingjiang puissant dryer limited company. After many transform roll out a few new structures again, increased into wind by original slit tangential into wind, reduced wind block of the system greatly. A few more applicable among the mineral filter cake with low viscosity and chemical industry of the stock such as body dry. Additionally puissant dryer limited company increased this equipment coping to classification above all structure, make product granuality small and branch is narrower. Drier of ④ paddle type 1990, paddle type drier introduces our country by Beijing dye factory above all, those who be used at indigotic dye is dry. Paddle type drier conducts heat with the tradition for main type, the biggest advantage is to pass thermal efficiency tall, and serial production, this kind of drier fetterses with Japanese Nai good chance at present the place that make is a delegate, what large paddle type drier basically uses at urban mud is dry. Our country basically is used at careful chemical industry at present, of the petrochemicals dry. At present home has much home company capable to make this kind of equipment, quite representative manufacturer is like day of limited company of dryer of 3 gorge Hao Bo, Lanzhou China the unit such as dryer limited company. But be confined to twin axle, the large facility of four-axle above did not see have production report. Drier of ⑤ disk type has the introduction in the dry monograph of advanced Russia and inchoate Japan. 20 centuries 80 time are prime, by Shanghai chemical industry equipment place is begun to develop this technology, but as a result of a variety of reasons, equipment is used without a large number of promotion. In last few years many dry company of domestic begins to develop this technology, to current and basic maturity, and also have certain progress to the academic research of this kind of type, production stage number is more is limited company of equipment of Shijiazhuang industry big chemical industry. This type also has a few manufacturer in area of shade of Changzhou, river making. One kind when drier of ⑥ oscillatory fluid-bed regards fluid-bed as drier improves type, our country has the story of research before a few years, but make progress all the time not quite, since abroad introduces this kind of model, just entered the peak that develops this technology, of the earliest industrialization with Tie Ling essence of life is versed in (group) Inc. is a delegate, after this home has much home company to make this kind of model, the structure also has certain breakthrough, northeast university development gives structure of the makings that prevent leakage. What at present the technology matures quite is the type that is a delegate with Professor Pan Yongkang, this type increased to control the construction of stock traversal speed, of sirocco distributing more reasonable, and can prevent leakage makings effectively. According to using the company introduction of this technology, with common vibration fluid-bed photograph is compared, the area evaporates intensity rises substantially. Prior of development of drier of ⑦ chamfer agitate is place of Japanese Su Bentie work, inside groove drier, enter the structure of original mix stock in order to connect composition of steam pipe fitting, arrive since already but agitate stock, can conduct caloric purpose again. In the discovery in visitting Shanghai is changed machine 3 factories are developing this technology, but industrialized amount is not large, do not make more introductions. ⑧ wears regurgitate to turn drier wears regurgitate to turn drier is to be inside the box of a cuboid, installation has poriferous circumgyrate cylindrical shell, immanent Zhou Xiangshe has cylindrical shell many are copied board, copy board also contain alveolus, processing has the stock of proper form, method of feed in raw material and close of circumgyrate cylinder drier, sirocco crosses cylindrical shell and makings layer from the bottom of cylinder. Carry wet hind drier of classics upside eduction, this drier has the feature of circumgyrate cylinder drier to have the feature of fluid-bed again already. Data introduction comes from Japan big plain change formerly machine company limited, evaporate drier of cylinder of intensity outclass circumgyrate, in recent years our country also has the company that develops this kind of type. ⑨ rotates pneumatic drying machine rotates the Hess spy company that what pneumatic drying machine applies earlier is Germany, those who be used at PVC is dry. Its fundamental is drier lead plane is comprised by the cylindrical shell that takes chuck, hot air current is carrying stock to do screw type ascendant exercise inside drier, hot air current and stock undertake conducting heat passing pledging, suffer chuck to conduct again at the same time conduct heat reach shoot conduct heat, because this thermal efficiency compares convection,conduct heat pneumatic drying machine is expensive. Our country already introduced this kind of device early or late multi-purpose also at PVC dry. At present home also has it is reported manufacturer develops this kind of device, but the report that has not see industrialized dimensions equipment at present. Still have inert particle fluid-bed in addition, agitate fluid-bed drier and special drier. Because these equipment cannot form series, and dosage is less, do not make key introduction. 1.

3 equipment dimensions regards production as medium unit equipment, drier asks to be the supreme end with satisfying production. As the amplification of each industry scale of production, the dimensions that also drove dryer expands ceaselessly. The diameter of flash vaporization dryer that at present our country produces can be achieved 1.

The applied example that 6m(exceeds this dimensions is not much) , and movement is favorable. Of paddle drier conduct heat the area can achieve 160m2, can understand all sorts of medium holding heat, disk type drier is the biggest conduct heat the area already achieved 180m2. The treating capacity of spray dryer of mechanical and centrifugal type can achieve 45t/h, the centrifugal atomizer of Electromechanical an organic whole also attains the scale of treating capacity 5t/h, better land solved the mechanical problem of atomizer, diameter of centrifugal spray dryer already achieved 10 meters of above. Pressure type spray dryer can achieve a diameter 8 meters, overall height many meters 50, processing capability achieves 4t/h. Diameter of circumgyrate cylinder drier can be achieved 2.

5 meters, be as long as many meters 30. Belt drier area also achieves 140 much square metre. 1.

The convenient degree of the controls level, accessory equipment equipment that the equipment standard of dryer of 4 equipment standard basically points to dry system, operation and safe grade. Review the equipment standard of our country dryer, had great progress. Especially large dry system is more such. Main show is in the following respects: ① controls systematic equipment. System of automatic, semi-automatic control applies extensively, make labor intensity is reduced, product quality is stable. The application of ② computer technology. The majority in large system collects what undertake systematic parameter with computer technology to collect, processing and control, make the system operates a condition to achieve best. ③ human nature changes a design. The habit of handlers considers while equipment is designed, maintain the convenient level when. ④ safety changes a design. There is safety to call the police in the system, danger affection eliminates a function, especially combustible explode easily of stock dry should consider this. ⑤ accessory equipment. The accessory equipment in the system also tends reasonable, heat, the relation of form a complete set of the packing equipment of the feed in raw material, depart that enrage solid, product and lead plane achieves optimization. 1.

The design of drier of 5 experiments condition needs the relevant craft parameter of specific stock, a lot of important parameter must pass an experiment to get, the design of drier is very powerful to experimental dependence. Because this experiment condition is the key of accurate design drier, look from the company condition that visit, great majority enterprise has experimental equipment. Shandong day force condition of experiment of dryer limited company is better, have the experimental equipment of all sorts of more than 10 type that dimensions differs. The control method of this experiment base is more advanced also at the same time, can more accurate collect experimental data, for craft the design offers a condition. Changzhou beautiful sends plant of the dryer that make bead is Bao Yi, make bead, dry the equipment that is an organic whole creates a company, the lab is more complete also, right new the stock recipe that involves has certain research, impression leaves after looking around deeper. In addition Shijiazhuang is versed in big chemical industry sets stock to be restricted to change twinkling of city of department, lukewarm state to amount to dryer limited company, Jiangsu one pace dryer limited company, limited company of Changzhou pioneer dryer also has his lab. As we have learned, still a few factories are removing, the lab also is in construction. CNC Milling CNC Machining