CN101926499B - Sectional cylinder cut tobacco dryer - Google Patents

Sectional cylinder cut tobacco dryer Download PDF

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Publication number
CN101926499B
CN101926499B CN2010102656657A CN201010265665A CN101926499B CN 101926499 B CN101926499 B CN 101926499B CN 2010102656657 A CN2010102656657 A CN 2010102656657A CN 201010265665 A CN201010265665 A CN 201010265665A CN 101926499 B CN101926499 B CN 101926499B
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drying cylinder
cylinder
hot blast
drying
hot
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CN101926499A (en
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马铁兵
王永金
陈良元
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Zhisi Holdings Group Co., Ltd.
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JIANGSU ZHISI MACHINERY GROUP CO Ltd
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Abstract

The invention provides a novel energy-saving sectional cylinder cut tobacco dryer capable of arbitrarily setting the temperature in a design range to realize high-precision temperature control and high heat utilization rate. The novel energy-saving sectional cylinder cut tobacco dryer comprises a heat conducting oil circulating oil temperature controller, a drying cylinder, a hot air moisture removing system and the like, wherein the drying cylinder is divided into a feeding section drying cylinder and a discharging section drying cylinder along the feeding direction and discharging direction of cut tobaccos; and corresponding to the high-temperature zone and the low-temperature zone of the drying cylinder, the hot air moisture removing system is divided into independent high-heat air section and low-heat air section, a hot air moisture removing pipe is fixedly installed at the other side opposite to the throwing direction of the cut tobaccos without rotating together with the drying cylinder, the axial direction of an air outlet arranged on the hot air moisture removing pipe is approximately intersected with the dropping direction of the cut tobaccos, the air direction of hot air blown into the drying cylinder is intersected with the dropping direction of the cut tobaccos, and the hot air radially flows in the drying cylinder and can uniformly and effectively pass through the throwing layer of the cut tobaccos. By utilizing heat conducting oil for heating the drying cylinder and the hot air, the sectional cylinder cut tobacco dryer has high temperature control precision and heat utilization rate and can meet the process requirements of different cut tobaccos, such as processing strength, drying uniformity and the like.

Description

Sectional cylinder cut tobacco dryer
Technical field:
The invention belongs to the tobacco shreds drying equipment on the tobacco cutting production line, is to utilize hot blast and heating cylindrical shell barrel to carry out the sectional cylinder cut tobacco dryer of tobacco shreds drying specifically.
Background technology:
Tobacco shreds drying is the important procedure in the tobacco cutting production process.The dry operation target of leaf silk is that the part moisture content of removing in the leaf silk requires and precision with the moisture content that reaches regulation, improves the filling value of leaf silk simultaneously, reduces the excitant and the assorted gas of leaf silk, improves the suction flavor of leaf silk.Dry run generally adopts heat conduction and thermal convection current form that the pipe tobacco of humidity is heated; Make water evaporates in the moist pipe tobacco in cylindrical shell; With the mobile cylindrical shell environment of taking out of of barrel air-flow, dry run makes continuous reduction of pipe tobacco moisture content reach drying purpose.
At present, the cylinder cut tobacco dryer that the dry pipe tobacco of domestic and international tobacco processing enterprise generally uses mainly is to utilize the conduction of drying cylinder wall heat and these two kinds of composite drying modes of hot air convection simultaneously the pipe tobacco of humidity to be carried out heat drying.Cylinder cut tobacco dryer can be divided into forms such as thin board type, slab formula, tube-sheet type, semicircle tubular type by the concrete structure difference of drying cylinder, according to being divided into downflow type, form such as reverse-flow again with the different hot-air systems of the pipe tobacco direction of motion.Domestic cigarette enterprise generally adopts is the thin board type cylinder cut tobacco dryer of German Hauni company, and the steel plate of this cut-tobacco drier conduction heating part is thin, and quality is less; Thermal capacity is less, and therefore, the adjustment of this type cylinder cut tobacco dryer is highly sensitive; The control accuracy of baking back pipe tobacco outlet moisture content is also higher; Simultaneously, this type downflow type cylinder cut tobacco dryer can make pipe tobacco obtain the typing effect that expands preferably when being used for online expansion process.
Development through decades is perfect, and all kinds of cylinder cut tobacco dryers have all reached higher level from structure, Performance And Reliability aspect, can satisfy the demand of baking silk technology basically.But concerning the requirement of cylinder cut tobacco dryer, still also there is following problem from present baking silk technology.At first, under the prerequisite that guarantees discharging moisture content setting accuracy, the pipe tobacco temperature behind the baking silk is difficult to set and control in certain limit, and the pipe tobacco control accuracy of temperature is poor.The 2nd,, the expansion rate of pipe tobacco can not be set and control in dry run.The 3rd,, cylinder cut tobacco dryer is relatively poor to the moisture Control problem of stub bar material tail, and promptly batch pipe tobacco at first gets into cylinder cut tobacco dryer and goes out the problem of the pipe tobacco overdrying of cylinder cut tobacco dryer at last.
Address these problems, except that the needs system considers, mainly still should analyze from this body structure of cylinder cut tobacco dryer.At first, the drying cylinder of the various cylinder cut tobacco dryers that generally use is one-part forms, and the heat carrier steam of use gets into the arrangement group pipe the drying cylinder heat exchanger plate from the swivel joint of discharge end; Steam is discharged through former swivel joint through a round trip again; Because the length of dryer section is certain, can only just can make moist pipe tobacco moisture content be reduced to the requirement of process stipulation by regulating the quantity of steam (being steam regulation pressure) that gets in the drying cylinder, but the temperature behind the baking silk be uncontrollable; Because drying tube temperature can only be integrally-regulated; That is to say that the temperature of the high more drying cylinder of the moisture content of pipe tobacco also will improve under the stable situation of flow of tobacco, drop temperature is also high more; Otherwise, just in time opposite.Like this, pipe tobacco temperature behind the baking tabacco scrap is set is difficult to accomplish in certain limit.Second; Cylinder cut tobacco dryer is a composite drying mode technology, and barrel heat exchanger plate and hot blast temperature are the topmost key factors of control tobacco expanding rate, the drying cylinder of one-part form on its length owing to almost there not being thermograde; Can not select the drying cylinder expansion temperature pointedly according to the expansion process demand of pipe tobacco; No matter and hot blast be following current or adverse current all to pass whole drum cavity, hot blast dry pipe tobacco in the axial advancement in tube, its temperature also reduces constantly; Humidity is also constantly increasing, and drying efficiency constantly reduces.Following current hot blast as firm entering cylinder cut tobacco dryer can play a role to the expansion of pipe tobacco, still, still can not control the tobacco expanding rate.The 3rd; Cylinder cut tobacco dryer also has many measures at present to the moisture Control problem of stub bar material tail; Such as the wind speed of the rotating speed that increases pipe tobacco inlet amount, quickening cylinder at the cylinder cut tobacco dryer use initial stage, raising hot blast, the pressure of reduction steam etc., but still be to go passively to solve.
In sum; The problem that cylinder baking silk technology exists is the controllability problem of more broad sense; Can develop to multiple controllable parameters direction from the general structure design of cylinder cut tobacco dryer, major parameter is regulated and is used for guaranteeing to dry by the fire a moisture, temperature and expansion rate interior in a big way controllability and stability.
So designing a kind of novel cylinder cut tobacco dryer is the demand that adapts to the pipe tobacco processing technology.At first, be the basis with the structure that has the thin board type cylinder cut tobacco dryer now, to the development of segmentation cut-tobacco drier, drying cylinder can be divided into two sections or a multistage temperature baking silk section, and corresponding with it hot-air system is also relatively independent.With two sections cut-tobacco driers is example; Feed zone drying cylinder and hot blast temperature can be set according to the pipe tobacco process requirements; Discharging section drying cylinder and hot blast temperature can change according to the requirement of pipe tobacco temperature after the drying; The forms of motion of the relative pipe tobacco of hot blast also requires to change to some extent in the cylinder, to improve the efficient and the precision of heated-air drying.
For example the disclosed a kind of sectional type low temperature roller cut tobacco drying equipment of CN101611921A comprises charging cover, the discharging cover that cylindrical shell and two ends have and goes up the exhausting moisture pipeline that each is connected; On said cylindrical shell inner tube wall, be evenly equipped with the semicircle pipe and introduce hot air duct; The stir-fry flitch that is provided with in the cylindrical shell; Wherein, said cylindrical shell is a segmented cylindrical shell that has high-temperature region and low-temperature space at least; Barrel is equipped with low warm-air pipe road and the high hot air duct that contains on this low warm-air pipe road; Between said two bodys and cylindrical shell, connect and compose the spoke of synchronous rotation; Low warm-air pipe road is connected with blower fan with the pairing storage heater in outside respectively with high hot air duct inlet; Be radially distributed with the stir-fry flitch at said high hot air duct.Because of barrel temperature, hot blast temperature sectional are regulated control respectively; Regulate the cross-flow of the height of two sections barrel temperatures and hot blast temperature different and hot blast and material; Handle intensity and uniformity, whole comprehensive aesthetic quality and the Nai processability that improves pipe tobacco to reach different baking silks.But the described hot blast of this scheme gets into cylindrical shell from the interlude of cylindrical shell, moves to the cylindrical shell two ends; In the process that moves, the temperature of hot blast is in continuous reduction, and material is from the process that the high point of cylindrical shell is shed downwards; Have only partial material to contact with hot blast and absorb heat energy, hot blast subsequently can be sought the less no material district of resistance and converge to the humidity discharging mouth, and the effect of heated-air drying is relatively poor; Especially its back segment is main with the heated-air drying drying, is difficult to obtain the uniform product of moisture content.Secondly, warm-air pipe is in drum, and material gets into warm-air pipe in the process of shedding just is difficult to effectively cleared up, and finally can cause warm-air pipe to stop up.Its material is shed on the intermediate heat airduct through cylinder and is shed once more, and it is broken also can to cause the secondary pipe tobacco to make.Therefore, there is defective in being provided with of its hot air duct, is prone to cause the practical operation obstacle, and heated-air drying efficient is not high, baking temperature control difficulty.
Another letter of cylinder cut tobacco dryer problem to be solved is exactly the selection of heating carrier.In recent years, increasingly serious along with China's rapid development of economy and environmental issue, effective utilization of the energy becomes an important indicator of sound and rapid economic growth.At present; The also more and more energy-saving and cost-reducing work of attention of domestic tobacco processing enterprise; At present cylinder cut tobacco dryer generally uses steam as heat exchange carrier, and the utilization rate of steam thermal energy is lower, and a large amount of steam of the use of the heat exchanger through drying cylinder heat exchanger plate heat of neutralization wind system in the cylinder cut tobacco dryer equipment all are discharged in the environment; Waste heat, influenced environment.The temperature of drying cylinder is to control by regulating the quantity of steam (being steam regulation pressure) that gets in the drying cylinder; Can not be full of steam in the pipeline in the heat exchanger plate; The drying cylinder surface temperature difference is bigger, also is unfavorable for the effective absorption of pipe tobacco to heat energy, influences the uniformity of tobacco shreds drying.In addition, destabilizing factor such as quality of steam and steam pressure regulation, draining system also can have a strong impact on the baking yarn quality.Simultaneously, steam heat-exchanging system support pipeline need dispose a large amount of high-quality imported valves, has improved the configuration of devices cost.
Summary of the invention:
The present invention is directed to the technical problem that above-mentioned prior art is deposited, provide a kind of can be in scope of design design temperature arbitrarily, realize high-precision temperature control, the novel energy-saving sectional cylinder cut tobacco dryer that heat utilization efficiency is high.
The present invention includes a whole drying cylinder and hot blast humidity discharging system; Said whole drying cylinder is divided into two sections of feed zone drying cylinder and discharging section drying cylinders according to the temperature difference, and the hot blast exhausting moisture pipeline of hot blast humidity discharging system is arranged in the drying cylinder; Said hot blast exhausting moisture pipeline is fixedly set in the opposite side that relative pipe tobacco material is shed, axially roughly the leaving direction and intersect of the exhaust vent that is provided with on it with the pipe tobacco material, and making it be blown into hot blast wind direction and pipe tobacco material in the drying cylinder, to leave direction crossing.Warm-air pipe pipe fixed installation of the present invention; Do not rotate with drying cylinder, and axially roughly the leaving direction with the pipe tobacco material and intersect of hot air duct exhaust vent, can keep hot blast radially steady flow in drying cylinder; Can pass the layer of shedding of pipe tobacco material uniformly and effectively, fully improve heated-air drying efficient.
As preferred version, said hot blast exhausting moisture pipeline is the hard-wired crescent pipeline identical with the drying cylinder total length of opposite side that relative pipe tobacco is shed, this crescent pipeline tool exterior arc surface and inner concave arc surface; The inside of this crescent pipeline is divided into two passages in top and the bottom, and upper channel is a negative pressure humidity discharging pipe, and lower passage is a malleation hot blast discharge pipe, is provided with exhaust vent corresponding to upper channel on the inner concave arc surface, is provided with fresh air inlet corresponding to lower passage; Lower passage corresponds to the feed zone drying cylinder and the discharging section drying cylinder is divided into two sections, isolates each other.
The hot blast exhausting moisture pipeline is arranged to have crescent section, can effectively avoids the pipe tobacco material on pipeline, to pile up, and avoid the pipe tobacco material to stop up into exhaust vent.Simultaneously, the diameter of the exterior arc surface of said crescent pipeline, it is suitable that the flight that is designed to and is arranged at the drying cylinder internal face rotates formed circular arc internal diameter with drying cylinder, can further effectively prevent buildup on pipe surface.
Exhaust vent density on the inner concave arc surface of said crescent pipeline along the direction of advance of pipe tobacco material in the drying cylinder by close to dredging, make hot blast intensity by dying down by force, guarantee that pipe tobacco can be excessively dry.
Along pipe tobacco input and output material direction, the cut-tobacco drier drying cylinder is divided into two sections of feed zone drying cylinder and discharging section drying cylinders; The adjustable range of feed zone drying tube temperature is between 50-250 ℃, and the adjustable range of discharging section drying tube temperature is between 30-100 ℃.These two sections drying cylinders can provide thermal source by two groups of conduction oil circulates temperature controlled system machines respectively.
Simultaneously, correspond to the high low-temperature space of drying cylinder, hot-air system is divided into independently high hot blast section and low hot blast section.That is: said hot blast humidity discharging system comprises the hot-air system of being made up of feed zone hot-air system and two groups of autonomous systems of discharging section hot-air system; These two groups of hot-air systems comprise air-heater, heat exchanger and corresponding hot air duct, and the heat exchanger of two groups of hot-air systems provides thermal source by said two groups of conduction oil recycle oil temperature control machines respectively.The adjustable range of feed zone hot blast temperature is between 50-250 ℃, and the adjustable range of discharging section temperature is between 30-100 ℃.
The present invention adopts the food-grade conduction oil as heat exchange carrier; Two heat exchangers of heating of drying cylinder barrel and hot-air system provide thermal source by conduction oil circulates temperature controlled system machine respectively; The temperature of drying cylinder and hot blast can be set arbitrarily in the scope of regulating and accurately control, and the system temperature control accuracy can reach in ℃ scope of setting value ± 1.Secondly, owing to be full of the conduction oil that flows fast in the drying cylinder heat exchanger plate, the drying cylinder wall temperature is uniform and stable, adapts to the manufacturing technique requirent of the oven dry, expansion, temperature control etc. of all kinds of pipe tobaccos, and is also energy-conservation about more than 40% than existing various cylinder cut tobacco dryers.So the present invention promptly meets the environmental requirement of energy-saving low-carbon, also have very strong adaptability, can satisfy the technological requirement such as processing intensity and uniform drying property of different pipe tobaccos, can satisfy the product process requirements of Chinese style cigarette.
As for the heat energy carrier of heat exchange, conduction oil is a kind of more energy-conservation heat exchange carrier with respect to steam.It is high that conduction oil has the low pressure heating-up temperature as heat exchange carrier, and temperature control precision is high, and heat is transmitted uniform high-efficiency; Advantages such as warm-up cycle is utilized, and conveying operations is convenient comprise: 1; Under the condition of normal pressure almost, can obtain very high operating temperature (reaching as high as 350 ℃).Promptly can reduce the operating pressure and the safety requirements of heat system greatly, improve the reliability of system and equipment; 2; Can be in wideer temperature range (0-350) ℃ satisfy process requirements of different temperatures heating, cooling; Or in same system, use with a kind of conduction oil and realize heat and subcooled technological requirement simultaneously, can reduce the complexity of system and operation; 3, the conduction oil sealing recycles, and compares with vapor phase, has saved water treatment system, has improved system thermal efficiency, has reduced the maintenance workload of equipment and pipeline.Can reduce simultaneously the equipment cost and the Operation and Maintenance expense of heating system; In addition, cause under the situation of system leak that in cause of accident etc. just might burn when conduction oil and naked light meet, this is that heat-conducting oil system is compared existing deficiency with the steam system.But the operating pressure of the conduction oil circulatory system is lower, is easy to the excellent sealing of the system that guarantees, so its processing safety will be higher than water and vapour system.
Main feature of the present invention: the one, select the food-grade conduction oil as heat carrier, utilize two conduction oil recycle oil temperature control machines optionally to heat for respectively two sections drying cylinders of cylinder cut tobacco dryer, drying cylinder wall temperature and hot blast temperature are even, stable, accurate.Two are arranged on the crescent pipeline of a side in the cylinder cut tobacco dryer drying cylinder; Two independently hot blast in two sections drying cylinder length ranges, form radially hot blast through the crescent pipeline; Hot blast after the heat exchange is discharged through next-door neighbour's last exhausting moisture pipeline, and the thermal efficiency is high, and heat exchange is even.The present invention is through the accurate control of charging and discharging section drying tube temperature and hot blast temperature; Under the prerequisite that guarantees discharging moisture content setting accuracy; Realize the setting and the control of the expansion rate of pipe tobacco through regulating front-end temperature; Through regulating setting and the control that the back segment temperature realizes the pipe tobacco temperature behind the baking silk, and effectively realize the moisture Control of stub bar material tail through the adjustment of production process.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a plan structure sketch map of the present invention;
Fig. 3 is that the A of Fig. 1 is to structural representation;
Fig. 4 is a drying cylinder schematic cross-section of the present invention.
Among the figure: 1, support; 2, cylinder; 3, supporting roller wheel; 4, guide tube; 5, drying cylinder; 6, heat-insulation layer; 9, feed zone drying cylinder conduction oil oil-feed endless tube; 10, discharging section drying cylinder conduction oil oil-feed endless tube; 11, swivel joint; 12, the blower fan of feed zone drying cylinder hot-air system; 13, feed zone drying cylinder hot-air system heat exchanger; 14, the blower fan of discharging section drying cylinder hot-air system; 15, discharging section drying cylinder hot-air system heat exchanger; 16, conduction oil recycle oil temperature control machine; 17, conduction oil recycle oil temperature control machine; 18, crescent pipeline; 19, front end-plate; 20, hot blast passes through pipeline; 21, humidity discharging pipe; 22, motor reducer; 23, jigging conveyer; 24, flight; 25, hot blast radially; 26, feed zone drying cylinder conduction oil oil return endless tube; 27, discharging section drying cylinder conduction oil oil return endless tube
The specific embodiment:
Like Fig. 1, Fig. 2 and shown in Figure 3; Sectional cylinder cut tobacco dryer according to the invention; Comprise support 1, it is the supporting of all parts of cylinder cut tobacco dryer, and the cylinder 2 that has certain inclination angle (generally at 1.5 °-3 °) is installed on the two groups of supporting roller wheels 3 in front and back; Be included in guide tube 4 on the cylinder 2, drying cylinder 5, the heat-insulation layer 6 of heat exchanger plate are housed, and feed zone drying cylinder conduction oil oil-feed endless tube 9, discharging section drying cylinder conduction oil oil-feed endless tube 10, swivel joint 11 etc.Blower fan 14, the heat exchanger 15 of blower fan 12, heat exchanger 13 and the discharging section drying cylinder hot-air system of feed zone drying cylinder hot-air system are installed below cylinder 2; Conduction oil recycle oil temperature control machine 16 is supplied with feed zone drying cylinder 51 and heat exchanger 13 conduction oils through pipeline, and conduction oil recycle oil temperature control machine 17 is supplied with discharging section drying cylinder 52 and heat exchanger 15 conduction oils through pipeline.The crescent pipeline 18 that is arranged in the cylinder cut tobacco dryer drying cylinder is fixed on above the front end-plate 19 on the support.
Like Fig. 3, shown in Figure 4, on drying cylinder 5 barrels heat exchanger plate 7 is installed, the first-class branch of drying cylinder 5 inwalls is provided with flight 24; Crescent pipeline 18 is fixedly mounted on the opposite side that relative pipe tobacco is shed; Tool exterior arc surface 31 and inner concave arc surface 32, inner concave arc surface 32 is provided with the outlet and inlet hole, wherein; It is suitable that the diameter of exterior arc surface 31 and flight 24 rotate formed circular arc internal diameter with drying cylinder, to prevent buildup on the exterior arc surface; For preventing the wind hole plug, the top of crescent pipeline 18 also can be provided with plate washer 36; The inside of crescent pipeline 18 is divided into two passages up and down by dividing plate 33; Upper channel 34 is a negative pressure humidity discharging pipe; Lower passage 35 is a malleation hot blast discharge pipe, and lower passage 34 corresponds to feed zone drying cylinder 51 and is divided into two sections with discharging section drying cylinder 52, isolates each other.Hot blast is connected with crescent pipeline 18 bottom blast pipes through pipeline 20, and humidity discharging pipe 21 is connected with crescent pipeline 18 upper pipe.The lower passage 35 of crescent pipeline 18 blows out radially hot blast 25 through fresh air inlet in drying cylinder.
Operation principle of the present invention and process are following: cylinder cut tobacco dryer cylinder 2 is by after motor reducer 22 drivings and accomplishing preheating; Waiting to dry pipe tobacco is sent in the cylinder cut tobacco dryer drying cylinder by jigging conveyer 23 through flow controlling unit; Pipe tobacco through guide tube 4 gets into feed zone drying cylinder 51 equably; The temperature of this section drying cylinder and hot blast is set according to pipe tobacco explained hereafter requirement of strength and is kept, and pipe tobacco 51 is dug by flight 24 in the drying cylinder that rotates, in the motion process near the drying cylinder top; Pipe tobacco constantly falls under the effect of gravity; Simultaneously through from down to up radially hot blast 25, pipe tobacco rolls in feed zone drying cylinder 51 in the process of advancing, and carries out sufficient heat exchange with the constant basically hot blast 25 of drying cylinder 51, flight 24 and humidity, the temperature of steady temperature all the time.Pipe tobacco will reach the expansion rate and the drying of accomplishing more than the 60%-70% of setting basically in this dryer section, so the temperature of feed zone drying cylinder and hot blast will be higher than the temperature of the discharging section drying cylinder of back.After pipe tobacco gets into discharging section drying cylinder 52; Its motion process is same as described above, and different is that drying tube temperature is more much lower than the former; Basically be the temperature of discharging requirement, hot blast temperature that constantly changes and air quantity mainly are used for adjusting and maintenance pipe tobacco discharging moisture and temperature.
In addition; In order to reduce the over-dried cut tobacco material amount that pipe tobacco cylinder cut tobacco dryer startup-shutdown produces; Can survey the instruction of optoelectronic switch according to charging, regulate the hot blast temperature and the air quantity of charging and discharging section drying cylinder automatically, reduce simultaneously or the electrical heating power of closing conduction oil recycle oil temperature control machine is realized.
In the whole baking silk course of work; Conduction oil recycle oil temperature control machine 16 oil pumps drive the conduction oil major part and get into feed zone drying cylinder conduction oil oil-feed endless tube 9 by heat exchanger 13; Through the oil-feed endless tube conduction oil is assigned to respectively organizing in the heat exchanger plate of drying cylinder 51 again, the conduction oil after the heat exchange returns conduction oil recycle oil temperature control machine 16, one few part conduction oils through feed zone drying cylinder conduction oil oil return endless tube 26 and gives heat exchanger 13 by another road pipe; Return then, like this closed loop circulation heating.Equally, conduction oil recycle oil temperature control machine 17, swivel joint 11, drying cylinder 52, discharging section drying cylinder conduction oil oil-feed endless tube 10 and discharging section drying cylinder conduction oil oil return endless tube 27 etc. are formed a closed loop loop heating system.Because conduction oil has only about 20 ℃ into and out of the temperature difference of conduction oil recycle oil temperature control machine, so its heat energy utilization rate is very high, has good energy-saving effect.

Claims (6)

1. a sectional cylinder cut tobacco dryer comprises a whole drying cylinder and hot blast humidity discharging system; Said whole drying cylinder is divided into two sections of feed zone drying cylinder and discharging section drying cylinders according to the temperature difference, and the hot blast exhausting moisture pipeline of hot blast humidity discharging system is arranged in the drying cylinder; It is characterized in that: said hot blast exhausting moisture pipeline is fixedly set in the opposite side that the pipe tobacco material is shed in the relative drying cylinder; Axially roughly the leaving direction and intersect of the exhaust vent that is provided with on it with the pipe tobacco material; Making it be blown into hot blast wind direction in the drying cylinder leaves direction with the pipe tobacco material and intersects the radially steady flow in drying cylinder of maintenance hot blast.
2. sectional cylinder cut tobacco dryer according to claim 1 is characterized in that: the hard-wired crescent pipeline identical with the drying cylinder total length of opposite side that said hot blast exhausting moisture pipeline is shed for relative pipe tobacco in drying cylinder; This crescent pipeline has exterior arc surface and inner concave arc surface; The inside of this crescent pipeline is divided into two passages in top and the bottom, and upper channel is a negative pressure humidity discharging pipe, and lower passage is a malleation hot blast discharge pipe, is provided with exhaust vent corresponding to upper channel on the inner concave arc surface, is provided with fresh air inlet corresponding to lower passage; Lower passage corresponds to the feed zone drying cylinder and the discharging section drying cylinder is divided into two sections, isolates each other.
3. sectional cylinder cut tobacco dryer according to claim 2 is characterized in that: the exhaust vent density on the inner concave arc surface of said crescent pipeline along the direction of advance of material in the drying cylinder by close to dredging, make hot blast intensity by dying down by force.
4. sectional cylinder cut tobacco dryer according to claim 2 is characterized in that: it is suitable that the diameter of the exterior arc surface of said crescent pipeline and the flight that is arranged at the drying cylinder internal face rotate formed circular arc internal diameter with drying cylinder.
5. according to claim 1,2,3 or 4 described sectional cylinder cut tobacco dryers, it is characterized in that: two sections drying cylinders provide thermal source by two groups of conduction oil circulates temperature controlled system machines respectively.
6. sectional cylinder cut tobacco dryer according to claim 5 is characterized in that: said hot blast humidity discharging system comprises the hot-air system of being made up of feed zone hot-air system and two groups of autonomous systems of discharging section hot-air system; These two groups of hot-air systems include air-heater, heat exchanger and corresponding hot air duct; The heat exchanger of these two groups of hot-air systems provides thermal source by said two groups of conduction oil recycle oil temperature control machines respectively.
CN2010102656657A 2010-08-27 2010-08-27 Sectional cylinder cut tobacco dryer Expired - Fee Related CN101926499B (en)

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CN201379056Y (en) * 2009-03-24 2010-01-13 湖北中烟工业有限责任公司 Two-stage tobacco dryer
CN101611921A (en) * 2009-07-24 2009-12-30 秦皇岛烟草机械有限责任公司 Sectional type low temperature roller cut tobacco drying equipment
CN101926499A (en) * 2010-08-27 2010-12-29 江苏智思机械集团有限公司 Sectional cylinder cut tobacco dryer

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