CN103225948A - Cassava dryer - Google Patents
Cassava dryer Download PDFInfo
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- CN103225948A CN103225948A CN2013101480995A CN201310148099A CN103225948A CN 103225948 A CN103225948 A CN 103225948A CN 2013101480995 A CN2013101480995 A CN 2013101480995A CN 201310148099 A CN201310148099 A CN 201310148099A CN 103225948 A CN103225948 A CN 103225948A
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Abstract
The invention discloses a cassava dryer which comprises a heat source, a blower, a ventilating duct and a drying chamber. The cassava dryer is characterized in that the ventilating duct at the outlet of the blower is connected with a heat exchanger, the heat source is connected with a thermal conductive part of the heat exchanger, the heat source is high-temperature steam or hot flue gas from a boiler, the outlet of the thermal conductive part is a hot air guide pipe, the hot air guide pipe is connected with the drying chamber, the drying chamber comprises peripheral heat insulation plates, a hot air oven and a pore plate, the upper part of the drying chamber is open or connected with an exhaust blower, the lower part of the drying chamber is a hot air chamber, and the pore plate is formed by drilling holes in a metal plate. The cassava dryer provided by the invention has the advantages that the investment in processing process is small, the heat energy utilization rate is high, large scale production is realized, the operation is simple and convenient, the cassava is prevented from fermentation, rancidity and hardening, the products are evenly dried, and the processing cost is low.
Description
Technical field
The present invention relates to a kind of crop products drying plant, particularly a kind of cassava slice dryer.
Background technology
Cassava is the subtropical zone crops of a kind of content of starch height, easy to raise, extensively plants in China south China and southwest, so a cassava plantation and an important industry that is processed into for China some areas.Cassava is dried to be the raw material of making starch, alcohol and citric acid, and from the beginning of this year, raw material is in short supply, and wine brewing manufacturing enterprise is in great demand to cassava, and the rise of cassava manufactured goods price in addition causes the cassava supply shortage.
Cassava is the potato agricultural products, must process immediately after the results or store with proper method, otherwise degenerate easily, and it is dried that people mainly shine into cassava cassava at present, but make tapioca slice owing to be subjected to weather effect, is not easy to do, and existence is gone mouldy.That have even seriously rot.At this problem, people have adopted some cassava drying equipments, and common having is following several:
1, air current drying machine
Use thermal vapor stream and carry out drying, utilize particle gravitational equilibrium principle simultaneously, carry out multistage steam flow heat exchange separation, step-down and obtain cassava dry powder by the cassava that oneself is ground into powdery.Shortcoming: present technique is applied to the former powder of dry cassava, need carry out the broken slurrying preliminary treatment of high strong power to fresh cassava, again the raw material wet pulp is carried out dry pulp and separates, and makes raw material granularity even, gravitational equilibrium.Therefore need to consume big power source, also set up a large amount of pre-treatment facilities.Investment is big, energy consumption is high.
2, fluidized bed type dryer, technical characterstic: present technique is used continuous pan feeding, and thin layer is put material, forces to import hot blast, the force ventilation dehumidifier, discharge method reaches oven dry cassava oven dry purpose continuously.Shortcoming: the space is big, put material less, heat energy is few with thin layer material exchange area, causes heat energy to waste in a large number, complex structure, investment greatly, the cost height.This equipment uneven drying is even, poor product quality.
3, box dryer, technical characterstic: this structure is with the material containing of net material supporting rack, and thin layer is evenly put.Import hot blast, at top layout air inducing dehumidifier, rotating at regular intervals turns material, reaches oven dry cassava purpose.Shortcoming: this equipment is with air inducing dehumidifier mode drying, and forming the interior steam flow of case is that introducing port-dehumidifier mouth is main steam flow, and main steam flow effluent and case angle, bottom are secondary steam flow and dead steam flow.Form vexed damp and hot steam state, drying efficiency is low, and is dried wet inhomogeneous, causes the tapioca fermentation, becomes sour.This equipment is rotated at regular intervals and is turned material, and labour intensity is big, and output is low, poor product quality.
Except above-mentioned prior art, open source literature has also been reported some cassava slice dryers, for example, Chinese patent, title: cassava slice dryer application (patent) number: the CN200920140478.9 applying date: 2009.01.23 open (bulletin) number: CN201349485 open (bulletin) day: 2009.11.25 apply for (patent right) people: Wei Zhi built the address: old No. 162 invention (design) people in village that write of the old villagers' committee of writing in Nanning City, Guangxi Zhuang Autonomous Region Binyang County bridge town: make a summary: a kind of cassava slice dryer, it comprises cylindrical housing, be located at feed hopper and the hot blast inlet pipe that is located at housing lower end one side above the housing, it is characterized in that: be located at lower end in the described housing, and the porous skew wall bucket that communicates with described hot blast inlet pipe; In housing, positioned at intervals is in some helical stir axles of described housing above and below; The lower end communicates the scavenge trunk that the upper end communicates with porous skew wall bucket inboard with the hot blast inlet pipe and the porous skew wall bucket outside.This dryer, feed hopper above housing is put into the inner chamber of cassava slice to housing, and the cassava slice of hot blast above housing lower end one side blows to by porous skew wall bucket advances heat drying to cassava slice, some helical stir axles constantly rotate the cassava slice in the stirring shell, make it to be heated evenly.
The shortcoming that the document exists is to adopt the helical stir axle to carry out drying, cooperates hot blast heat exchange forced ventilation hydrofuge, reaches cassava slice oven dry engineering.Shortcoming: originally be configured to cassava oven dry engineering, owing to use big power to promote material, the energy consumption height yields poorly.Hot wet condition ventilates not smooth, causes tapioca to ferment fast, become sour, so this equipment uneven drying is even, and poor product quality.Summary of the invention
It is low to the objective of the invention is to the production capacity that exists at existing cassava dryer, and the energy consumption height yields poorly, and uneven drying is even, the shortcoming of poor product quality, and a kind of oven dry production process is provided: small investment; Can the big production of scale; Heat energy utilization rate height; Easy and simple to handle; Evade that cassava fermentation is become sour and the coking crust; Product drying is even; The cassava dryer of technology crux problems such as processing cost is low.
For achieving the above object, the technological means of taking in the present invention is:
The cassava dryer comprises thermal source, blower fan, ventilating duct and and hothouse, be characterized in: the ventilating duct of blower fan outlet is connected to heat exchanger, thermal source connects the conducting-heat elements of heat exchanger, described thermal source is high-temperature steam or boiler hot flue gas, the conducting-heat elements outlet is a hot-blast conduit, hot-blast conduit connects hothouse, described hothouse is by the thermal insulation board of periphery, hot-air oven and orifice plate constitute, hothouse top is open type or connects air exhauster (open type is directly logical atmosphere, can evaporate moisture content rapidly, air exhauster is that the moisture content of cassava slice evaporation is extracted out, makes it to quicken dry), the bottom is the hot gas storehouse, and described orifice plate is to hole to form on metallic plate.
Described heat exchanger is made by heat pipe or conducting strip, interior or the conducting strip internal layer thermal source (for example logical high-temperature steam or boiler hot flue gas) of heat pipe, the cold wind of ventilating duct is from passing through between heat pipe or between conducting strip, obtain heating, lead to hothouse from hot-blast conduit, tapioca slice is heated, and cassava slice can obtain drying after the water evaporates.
Above-described hothouse orifice plate to upper strata opening is 30-100 centimetre, and it can be 30～80 centimetres that the fresh cassava sheet is stacked thickness, and each hothouse can reach 10～15 tons at every turn, and is perhaps more.
Described cassava dryer adopts some dryer couplings; accomplish scale production; the structure of coupling is to use more than one or the outlet of some typhoon machines is parallel to house steward, picks out some ventilating ducts from house steward then and enters hothouse through over-heat-exchanger and hot-blast conduit.
Also can be with tapioca slice classification drying, promptly hothouse is cascaded, and hothouse top connects the air exhauster suction pipe, by the machine drying, through certain hour and temperature, makes all cassava solid carbon dioxide parts all evaporate.
Compare with existing cassava slice dryer, substantive distinguishing features of the present invention and obvious improvement are:
1, the present invention has realized sharing the fresh cassava sheet equally at hothouse, and at hot gas storehouse importing high-pressure hot wind, hot blast is under the pressurized effect, evenly make progress through cassava slice layered suture crack by orifice plate, also take away the free moisture content that invests the surface that cassava is subjected to thermal evaporation fast to the cassava uniform heat conduction, realize the utilization of cassava heat absorption high efficiency; Free moisture content was pulled away after cassava was heated, and had avoided hot and humid tapioca gelatinization and the fermentation situation of becoming sour that makes to take place; The present invention also uses steam or hot flue gas as thermal source, obtains the hot blast of soft equilibrium by heat exchanger; Hot blast is controlled in material heating surface temperature when not being higher than starch gelatinization and coking critical-temperature, has realized tapioca slice production process heat energy utilization rate height; Evade the purpose that cassava is fermented, becomes sour and coking is crusted.
2, hothouse material containing thickness of the present invention is 30～100 centimetres, and every groove material containing amount can reach 10～15 tons, and hot blast forces to pass through the bed of material, the cassava slice pressurized that is heated---use moisture content heat absorption decreasing principle, behind the bottom raw material heat absorption heat release evaporation moisture content, moisture content reduces, and heat absorption reduces thereupon; In like manner, the position variation of heat absorption thermal discharge is promoted to the upper strata gradually by bottom, and all raw material surfaces are the complete without hindrance structure that opens wide, and the moisture vaporization quilt evenly hot blast of ascension is taken away, and finishes until drying, has realized that tapioca slice production process product drying is even.
3, open type cassava slice dryer of the present invention can be realized large-scale production, production assurance, and uniform drying, heat energy utilization rate height, simple to operate, therefore, realized that tapioca slice production process product processing cost is low; The purpose that the equipment gross investment is few.
4, for realizing the target in the big production of tapioca slice production scaleization; invention is used and is opened wide slot type material containing structure, by open channel, directly the fresh cassava sheet is fed intake with transporting pattern; outlet can the lace conveyer, and production scale is big and realize purpose easy and simple to handle.
5, the present invention is directed in the tapioca slice production, the cassava processing capacity is big, and moisture content height, starch heat the characteristics that easy gelatinization is rotten and coking is crusted, and use above-mentioned measure, obtain very good effect.Tapioca slice product testing result shows: moisture content reaches 13%～16%, is less than 0.5% deviation with batch product moisture content; All products do not have gelatinization all the time, become sour, the coking crust; Equipment easy grasp easy and simple to handle; The complete machine output is big; Unit cost is low.
The thermal source that the present invention uses can be high-temperature steam or boiler hot flue gas, also can use the used heat of some Industrial Boilers, and thermal current is indirectly to the cassava slice drying, and polluted product does not guarantee clean.
Description of drawings
Fig. 1 is the structural representation of cassava slice dryer of the present invention.
Fig. 2 is the structural representation of cassava slice dryer three dried platform dryer couplings of the present invention.
Fig. 3 is the later product template drawing of cassava slice oven dry of the present invention.
Sequence number and part name among the figure:
The 1-blower fan, the 2-cooling air duct, 3-steam inlet pipe, 4-lacks the gas outlet, the 5-valve, the 6-steam pressure gauge, the 7-insulation side board, the 8-orifice plate, the 9-heat exchanger, the 10-hot-blast conduit, 11-is incubated base plate, 12-hothouse, 13-hot-air oven, 14-conveyer belt.
The specific embodiment
Below in conjunction with drawings and Examples manioc waste dryer of the present invention is described.
As shown in Figure 1 and Figure 2,
The cassava dryer comprises thermal source, blower fan 1, ventilating duct and and hothouse, the cold ventilating duct 2 of blower fan 1 outlet is connected to heat exchanger 9, thermal source connects the conducting-heat elements of heat exchanger 9, described thermal source is high-temperature steam or boiler hot flue gas, the conducting-heat elements outlet is a hot-blast conduit 10, hot-blast conduit 11 connects hothouse 12, described hothouse 12 is by the insulation side board 7 of periphery, insulation base plate 11 hot-air ovens 13 and orifice plate 8 constitute, hothouse 12 tops are open type or connect air exhauster (open type is directly logical atmosphere, can evaporate moisture content rapidly, air exhauster is that the moisture content of cassava slice evaporation is extracted out, make it to quicken dry), the bottom is the hot gas storehouse, and described orifice plate 8 is to hole to form on metallic plate.
Described heat exchanger 9 is made by heat pipe or conducting strip, interior or the conducting strip internal layer thermal source (for example logical high-temperature steam or boiler hot flue gas) of heat pipe, the cold wind of ventilating duct is from passing through between heat pipe or between conducting strip, obtain heating, lead to hothouse 12 from hot-blast conduit 10, tapioca slice is heated, and cassava slice can obtain drying after the water evaporates.
When adopting some dryer couplings; accomplish scale production; the structure of coupling is to use more than one or 1 outlet of some typhoon machines is parallel to house steward; pick out some ventilating ducts from house steward then and enter hothouse 12 through over-heat-exchanger 9 and hot-blast conduit, the bottom of hot-blast conduit 10 is equipped with conveyer belt 14.
Fig. 3 has shown the later product of cassava slice of the present invention oven dry, and the product drying degree is suitable, and all products do not have gelatinization all the time, become sour, the coking crust; Equipment easy grasp easy and simple to handle; The complete machine output is big; Unit cost is low.
Claims (4)
- A cassava dryer comprise thermal source, blower fan, ventilating duct and and hothouse, it is characterized in that: the ventilating duct of blower fan outlet is connected to heat exchanger, thermal source connects the conducting-heat elements of heat exchanger, described thermal source is high-temperature steam or boiler hot flue gas, the conducting-heat elements outlet is a hot-blast conduit, hot-blast conduit connects hothouse, described hothouse is made of thermal insulation board, hot-air oven and the orifice plate of periphery, hothouse top is open type or connects air exhauster, the bottom is the hot gas storehouse, and described orifice plate is to hole to form on metallic plate.
- 2. cassava dryer according to claim 1, it is characterized in that: described heat exchanger is made by heat pipe or conducting strip, in the heat pipe or the conducting strip internal layer walk thermal source, the cold wind of ventilating duct is from passing through between heat pipe or between conducting strip, obtain heating, lead to hothouse from hot-blast conduit, tapioca slice is heated, evaporates.
- 3. cassava dryer according to claim 1 is characterized in that: described hothouse orifice plate to upper strata opening is 30-100 centimetre, and it can be 30～80 centimetres that the fresh cassava sheet is stacked thickness.
- 4. cassava dryer according to claim 1, it is characterized in that: described cassava dryer adopts some dryer couplings, the structure of coupling is to use more than one or the outlet of some typhoon machines is parallel to house steward, picks out some ventilating ducts from house steward then and enters hothouse through over-heat-exchanger and hot-blast conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013101480995A CN103225948A (en) | 2013-04-26 | 2013-04-26 | Cassava dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101480995A CN103225948A (en) | 2013-04-26 | 2013-04-26 | Cassava dryer |
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| CN103225948A true CN103225948A (en) | 2013-07-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449083A (en) * | 2014-12-16 | 2015-03-25 | 常熟市环境试验设备有限公司 | High-temperature drying box |
| CN105614332A (en) * | 2014-12-01 | 2016-06-01 | 重庆鸿谦农业开发有限责任公司 | Multi-flavored dried sweet potato manufacturing complete device with heat preserving and mixing mechanisms |
| CN107940926A (en) * | 2017-12-26 | 2018-04-20 | 浙江老树根油茶开发股份有限公司 | A kind of tea seed dryer and its furnace drying method |
| CN108168228A (en) * | 2017-12-26 | 2018-06-15 | 浙江老树根油茶开发股份有限公司 | A kind of furnace drying method of tea seed dryer |
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| CN86208216U (en) * | 1986-10-21 | 1987-09-23 | 朱天厚 | Ventilated cover-type crops-drying device with heated air or air stream |
| CN2157461Y (en) * | 1992-12-31 | 1994-02-23 | 东北电力学院 | Material dryer |
| JPH06337194A (en) * | 1993-05-26 | 1994-12-06 | Toho Gas Co Ltd | High-temperature hot air drying device |
| CN2758677Y (en) * | 2004-12-23 | 2006-02-15 | 杨明 | Soybean drier using steam as heat source |
| CN202195662U (en) * | 2011-08-22 | 2012-04-18 | 王廷宝 | Multifunctional hot air drying furnace |
| CN202407024U (en) * | 2012-01-12 | 2012-09-05 | 郭志辉 | Areca-nut drying device |
| CN203240872U (en) * | 2013-04-26 | 2013-10-16 | 陈富强 | Cassava sheet dryer |
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2013
- 2013-04-26 CN CN2013101480995A patent/CN103225948A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208216U (en) * | 1986-10-21 | 1987-09-23 | 朱天厚 | Ventilated cover-type crops-drying device with heated air or air stream |
| CN2157461Y (en) * | 1992-12-31 | 1994-02-23 | 东北电力学院 | Material dryer |
| JPH06337194A (en) * | 1993-05-26 | 1994-12-06 | Toho Gas Co Ltd | High-temperature hot air drying device |
| CN2758677Y (en) * | 2004-12-23 | 2006-02-15 | 杨明 | Soybean drier using steam as heat source |
| CN202195662U (en) * | 2011-08-22 | 2012-04-18 | 王廷宝 | Multifunctional hot air drying furnace |
| CN202407024U (en) * | 2012-01-12 | 2012-09-05 | 郭志辉 | Areca-nut drying device |
| CN203240872U (en) * | 2013-04-26 | 2013-10-16 | 陈富强 | Cassava sheet dryer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105614332A (en) * | 2014-12-01 | 2016-06-01 | 重庆鸿谦农业开发有限责任公司 | Multi-flavored dried sweet potato manufacturing complete device with heat preserving and mixing mechanisms |
| CN104449083A (en) * | 2014-12-16 | 2015-03-25 | 常熟市环境试验设备有限公司 | High-temperature drying box |
| CN107940926A (en) * | 2017-12-26 | 2018-04-20 | 浙江老树根油茶开发股份有限公司 | A kind of tea seed dryer and its furnace drying method |
| CN108168228A (en) * | 2017-12-26 | 2018-06-15 | 浙江老树根油茶开发股份有限公司 | A kind of furnace drying method of tea seed dryer |
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Application publication date: 20130731 |