CN2896159Y - Grain low-temeprature vacuum drying device - Google Patents
Grain low-temeprature vacuum drying device Download PDFInfo
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- CN2896159Y CN2896159Y CN 200520029350 CN200520029350U CN2896159Y CN 2896159 Y CN2896159 Y CN 2896159Y CN 200520029350 CN200520029350 CN 200520029350 CN 200520029350 U CN200520029350 U CN 200520029350U CN 2896159 Y CN2896159 Y CN 2896159Y
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Abstract
A grain low-temperature vacuum drying device, comprises a feeding seal valve, a storage section, a heating section, a vacuum dewatering section, a vacuuming pump, a lower cone, a discharging seal valve device etc. The heating section is an enclosed cavity jointly formed by certain vertical heating tubes, an inlet for hot medium, an outlet for hot medium, upper and lower seal plates, four side plates with the hot medium flows in and out of the cavity. The hot medium flows outside the heating tubes and the grains to be dried flows inside the heating tubes using self-weight. The vacuum dewatering section is formed by certain vacuum dewatering tubes, upper and lower plates, four side plates and a vacuuming outlet. The vacuum dewatering tubes can be arranged vertically for the grains to pass through inside the dewatering tubes, and the vacuum dewatering tubes can also be arranged horizontally for the grains to pass through outside the dewatering tubes. The present utility model greatly simplifies the structure of the grain low-temperature vacuum drying device, reduces the energy consumption in vacuuming, decreases the overall energy consumption during drying and increases the quality of dried grains.
Description
One, affiliated technical field
The utility model relates to a kind of grain drying, particularly a kind of cereal low-temperature vacuum drying device.
Two, background technology
Adopt traditional heated-air drying technology and equipment dry material because inner and surface forms very big temperature tonsure by dried grains, cause the decline of quality and the solute phenomenon of scattering easily.Especially cereal can scatter and disappear, and fragrance, corn can crack, paddy can produce quick-fried waist, and wheat, soybean, peanut can produce protein denaturation, rapeseed can be gone rancid.
The low-temperature vacuum drying technology can overcome the problem that solute scatters and disappears and quality descends that heated-air drying produces.Can solve the great practical problem that dry corn can not be used for deep processing purposes such as starch especially.Be a kind of green drying technology, have result of extraction.
(Granted publication number is CN1074529C to Chinese patent, the patent No. is 98102422.X) a kind of " low temperature and negative pressure method for drying cereal " be provided, adopt the vacuum moisture-exhausting pump that storage tank is formed negative pressure, then by heater heating conduction oil, mobile jar interior cereal heating, the moisture of evaporation cereal of making by conduction oil.
(Granted publication number is CN1256393A to Chinese patent, application number is 9812352.3) a kind of " grains vacuum drying storage series facilities " be provided, form by dry repository, drier, vavuum pump and portable grain elevator tool, horizontal and vertical tracheae is installed in dry repository, on vertical tracheae, have the slit, by hot air cereal, the humid air of hot-air and cereal is taken away by vavuum pump subsequently, and repository keeps vacuum state.
Chinese patent (application number 200520030987.8) provides a kind of " thin layer vacuum drying silo ", square cylinder is arranged, upper and lower covers is formed, the water cavity of an independent sealing is set respectively on the square cylinder bulkhead from top to bottom, two water cavities are communicated with by hot-water line, and the upper end of a water cavity links to each other with water inlet pipe, the lower end of another water cavity links to each other with outlet pipe, be provided with dividing plate every certain distance from top to bottom in each water cavity, making the glide path of hot water in two water cavities and hot-water line is the catadioptric formula arc type that returns, below the hot-water line of certain number of plies, be provided with the horn shape vacuum-pumping tube of some, one end of vacuum tube is connected with vacuum pumping pump after running through the cylindrical shell bulkhead, and vacuum-pumping tube and hot-water line are 90 degree and arrange.
Chinese patent (the patent No.: " dry materials tube and continous vacuum low temperature drying equipment thereof " ZL200420010815.X) is provided, by up and down star continuous feeding and discharging device, vacuum extractor, hot-water supply and dry materials tube, the dry materials tube is tightly connected with star continuous feeding and discharging device up and down respectively, vacuumize interface and be connected with vacuum extractor, the water inlet of the cylindrical shell of drying and delivery port are communicated with hot-water supply respectively by pipeline.On the inwall of the corresponding both sides of cylindrical shell of square dry materials tube, be separately installed with the board-like water pipe of certain number of plies from top to bottom, adopt board-like hot-water line to material heating, big, the homogeneous heating of contact area, charge and utilize heat energy, kept heat-sensitive substance to greatest extent and be not destroyed.
There is certain defective in above-mentioned technology when dealing with problems: first technology is by heating element heater soil conduction oil implementation heating, and is very high to the sealing requirements of pipeline, once occur revealing, will pollute cereal, makes complexity, and cost is higher; Second technology adopts the slit on the pipeline to transmit hot blast and moisture, owing to often there are foreign material such as some dust in the cereal, stops up easily, and influence vacuumizes the degree of drying of effect and cereal, and easy-clear not after the slit is stopped up in addition makes troubles to maintenance; And the employing batch production, efficient is low, very high to the vacuum requirement simultaneously, and the time of keeping high vacuum is long, and energy consumption height, production cost are also high; The heating pipe of third and fourth technology and vacuum tube are drawn repeatedly from the cylindrical shell many places of drying, the number of plies of hot-water line and number are a lot of again, be unfavorable for the formation of drying inner vacuum, brought very big difficulty to manufacturing process, common welding procedure and technology are difficult to guarantee sealing; The intensive obstruction that easily causes cereal of hot-water line is stopped up the back by being not easy cleaning, and hot-water line is difficult to maintenance once the restriction that is subjected to working space occurs revealing.
Three, the content of utility model
The purpose of this utility model: overcome the defective of prior art, provide a kind of simple in structure, manufacture difficulty is low, production easy to maintenance, continuous, cereal vacuum low temperature drying device that drying quality is good.
The technical solution of the utility model is:
A kind of tower cereal low-temperature vacuum drying device from top to down, is made up of charging seal valve, storage part, heating part, vacuum dehydration part, vacuum pumping pump, lower cone, unloading sealed valve device.During work, elevator rises to the drying device top with cereal to be dried, enters storage stream portion by the charging seal valve, and the cereal that enters storage part flows through heating part, vacuum dehydration part, lower cone successively by deadweight, finally discharges drying device by the discharging seal valve.Grain temperature is enhanced (generally about 40 ℃) in the heating part.Vaporization evaporation under the effect of moisture in negative pressure of vacuum of dehydration portion cereal inside, the aqueous vapor of evaporation is gone out drying device with vacuum pumping pump by pump drainage.Dry speed depends on the temperature of dry heat medium, the vacuum of drying device inside, the time that cereal is detained in drying machine.In general, the time that the vacuum that the temperature of dry heat medium is high more, drying device is inner is high more, cereal is detained in drying machine is long more, the moisture of sloughing in the cereal is many more, therefore generally controls the speed that grain moisture descends in the dry run by the vacuum that temperature is high more, drying device the is inner speed high more, the unloading seal valve of regulating the dry heat medium.When by a heating part and vacuum dehydration part, when being difficult to make cereal once to reach safe storage moisture, can adopt the mode of cyclic drying and multistage drying to carry out work.
Described heating part, by the closed cavity that the vertical heating tube of some is formed jointly together with inlet, thermal medium outlet, upper-lower seal plate, the four sides side plate of thermal medium, thermal medium flows in cavity and flows out.Like this, thermal medium is in the outside of heating tube, and cereal to be dried passes through by deadweight in that heating tube is inner, cereal by the time be that main heat exchange form cereal is heated with the heat conduction.Thermal medium can be hot-air, vapours, hot water etc.The section of heating tube can adopt versions such as rectangle, short rectangle, square, circle.Top at heating tube is flowed, is not formed the dead angle for the ease of cereal, is provided with the taper grain-guiding plate, and according to the shape of heating tube section, grain-guiding plate is provided with the grain of leading of below, top or square top and round bottom and bores.
Described dehydration portion, by the vacuum dehydration pipe of some together with upper and lower plates, four sides side plate with vacuumize outlet and form.The vacuum dehydration pipe can vertically be provided with, cereal passes through in dehydrating tube inside like this, the outside of vacuum dehydration pipe becomes vacuum cavity together with upper and lower plates with four sides side plate mutual group, the section of vacuum dehydration pipe can adopt versions such as rectangle, short rectangle, square, circle, the tube wall of the vacuum dehydration pipe mesh that gathered.But the vacuum dehydration pipe is horizontally set also, and cereal passes through in the both sides external of dehydrating tube like this, and the inside of vacuum dehydration pipe has been formed vacuum cavity together with opposing sideplates with vacuumizing to export.When the vacuum dehydrating tube vertically is provided with, flow, do not form the dead angle for the ease of cereal, at an upper portion thereof the taper grain-guiding plate should be set, according to the difference of vacuum dehydration pipe section configuration, grain-guiding plate is provided with the grain of leading of below, top or square top and round bottom and bores.
Described charging and discharging seal valve are for containing cylindrical housings, turning cylinder, blade, compositions such as motor.Have entrance and exit on the housing.The effect of charging and discharging seal valve is the vacuum that guarantees drying device inside.
Described vacuum means is changed to mechanical type vavuum pump, steam jet vavuum pump or water ring vacuum pump; The heating medium device is mechanical coal-fired hot-blast stove, oil burner, hot-water boiler or steam boiler etc.
The beneficial effects of the utility model:
1. the utility model is owing to adopted the mode of heating of " (heating) manages expert grain, the outer thermal medium of (heating) pipe ", and heating tube vertically is provided with, and the section of heating tube can be a various ways, and heating tube is inner by cereal, and the heating tube outside is the heat medium cavity.With the mode of heating of existing " thermal medium, (heating) pipe layman grain in (heating) pipe " relatively, can make the length of heating part not be subjected to the restriction of the number of plies, increase or shortening according to the requirement of conducting heat during design; The structure of the heating part of cereal low-temperature vacuum drying device is simplified greatly, realized the thin layer heating, avoided the heating tube many places to draw the vacuum seal closure of drying device heating part repeatedly, the device manufacture difficulty is significantly reduced, effectively guarantee the formation of drying device vacuum and not revealing of heat medium, effectively improved heat exchange area and heat exchange efficiency; Be difficult for stopping up when also making device work, heating tube has when leakage also to make things convenient for inspection and maintenance.
2. vacuum outlet of dehydration portion's employing of the present utility model, a plurality of vacuum dehydration pipes form a plurality of vacuum cavities, no matter walk the outer grain of walking of grain or pipe in the employing pipe, all make the very thin thickness of cereal layer, therefore required vacuum power is very little, the vacuum of drying device inside is basic identical, greatly reduces energy consumption.The length of vacuum dehydration part can increase according to the requirement of dehydration and reduce, and has avoided the restriction of the number of plies.
3. the utility model can be realized continuous production, can effectively improve the productivity ratio of cereal drying.
4. dry heat medium of the present utility model does not directly contact with cereal, makes on the one hand cereal avoid polluting, and has avoided drying medium to bring into cereal such as Mars on the other hand and causes fire, has increased the security of using.
5. dry heat medium of the present utility model can be diversified, can be hot blast, hot water, water vapour etc., and can recycle, and improved energy efficiency, produces energy-conservation effect.
6. baking temperature of the present utility model can effectively avoid cereal that the thermal change star takes place in dry run about 40 ℃, avoids the expansion and the quick-fried waist of cereal seed, has guaranteed the quality of dry back cereal.
7. of the present utility model applied widely.Be applicable to the drying of various bulk solid materials, be particularly suitable for drying, the extensive market of heat sensitive material, have good society and economic benefit after the popularization.
Four, description of drawings
Fig. 1 is one of cereal low-temperature vacuum drying apparatus structure schematic diagram
Fig. 2 is one of heating part structure of cereal low-temperature vacuum drying device shown in Figure 1
Fig. 3 is the vertical view of one of heating part structure of cereal low-temperature vacuum drying device shown in Figure 1
Fig. 4 is the grain-guiding plate of the heating part of cereal low-temperature vacuum drying device shown in Figure 1
Fig. 5 be cereal low-temperature vacuum drying device shown in Figure 1 the heating part structure two
Fig. 6 is two vertical views of the heating part structure of cereal low-temperature vacuum drying device shown in Figure 1
Fig. 7 be cereal low-temperature vacuum drying device shown in Figure 1 the heating part structure three
Fig. 8 is three a vertical view of the heating part structure of cereal low-temperature vacuum drying device shown in Figure 1
Fig. 9 be cereal low-temperature vacuum drying device shown in Figure 1 the heating part structure four
Figure 10 is four a vertical view of the heating part structure of cereal low-temperature vacuum drying device shown in Figure 1
Figure 11 is one of vacuum dehydration part structure of cereal low-temperature vacuum drying device shown in Figure 1
Figure 12 is the vertical view of one of vacuum dehydration part structure of cereal low-temperature vacuum drying device shown in Figure 1
Figure 13 be cereal low-temperature vacuum drying device shown in Figure 1 the vacuum dehydration part structure two
Figure 14 is two a vertical view of the vacuum dehydration part structure of cereal low-temperature vacuum drying device shown in Figure 1
Figure 15 is two of a cereal low-temperature vacuum drying apparatus structure schematic diagram
Figure 16 is one of heating part structure of cereal low-temperature vacuum drying device shown in Figure 15
Figure 17 is the vertical view of one of heating part structure of cereal low-temperature vacuum drying device shown in Figure 15
Figure 18 be cereal low-temperature vacuum drying device shown in Figure 15 the heating part structure two
Figure 19 is two a vertical view of the heating part structure of cereal low-temperature vacuum drying device shown in Figure 15
Figure 20 be cereal low-temperature vacuum drying device shown in Figure 15 the heating part structure three
Figure 21 is three a vertical view of the heating part structure of cereal low-temperature vacuum drying device shown in Figure 15
Figure 22 be cereal low-temperature vacuum drying device shown in Figure 15 the heating part structure four
Figure 23 is four a vertical view of the heating part structure of cereal low-temperature vacuum drying device shown in Figure 15
Figure 24 is three of a cereal low-temperature vacuum drying apparatus structure schematic diagram
Figure 25 is four of a cereal low-temperature vacuum drying apparatus structure schematic diagram
Five, the specific embodiment
Embodiment one:
Referring to Fig. 1～Figure 14, cereal low-temperature vacuum drying device adopts hot-air to work as the mode that heat medium and vacuum dehydration combine among the figure, is mainly closed envelope valve 6, elevator 7, upper cone 8, is advanced grain and close envelope valve 9 etc. and form by storage part 1, heating part 2, dehydration portion 3, vavuum pump 4, lower cone 5, unloading.During work, cereal is raised machine 7 and promotes, and closes envelope valve 9 and enters storage part 1 by advancing grain, enters heating part 2, dehydration portion 3, lower cone 5 successively by storage part 1 under the deadweight effect, finally closes envelope valve 6 by unloading and discharges drying machines.The heating tube inside of heating part 2 is the hot-air cavity by cereal, heating tube outside, be filled with heat-storage medium (as fluorite) in the hot-air chamber, hot air heat-storage medium and heating body, inside and outside scribble wear-resisting thermal-radiating material the heating body heat cereal to be dried with heat conduction and thermal-radiating mode again, the temperature of cereal is about 40 ℃.Heating part 2 is made up of thermal medium inlet 11, taper grain-guiding plate 12, heating tube 13, thermal medium outlet 14, airflow uniform distribution plate 15 etc., and cereal is in heating tube 13 inner walkings, and heat medium is in heating tube 13 outside walkings.Difference according to the section configuration of heating tube 13, heating part 2 can adopt Fig. 2 and Fig. 3, Fig. 5 and Fig. 6, Fig. 7 and Fig. 8 and and one of Fig. 9 and four kinds of versions shown in Figure 10, the difference of these four kinds of versions is that heating tube 13 sections are respectively rectangle, short rectangle, square and circular, hollow arrow line among the figure is represented the cereal flow direction, and the filled arrows line is represented the thermal medium direction that flows.Referring to Fig. 4, the taper grain-guiding plate 12 that 2 grain porch, heating part are provided with.Dehydration portion 3 adopts the mode of negative pressure of vacuum dehydration, by dehydrating tube 16, lead grain pipe 17, moisture outlet 18 etc. and form, can adopt Figure 11 and Figure 12, one of Figure 13 and two kinds of versions shown in Figure 14, what two kinds of version differences were dehydrating tube is provided with the direction difference, the horizontal dehydrating tube of preceding a kind of employing, and the section configuration of dehydrating tube can be a chevron or rectangular tubular etc., dehydrating tube is outside by cereal, dehydrating tube inner vacuum, has mesh on the dehydrating tube tube wall; The vertical dehydrating tube of a kind of employing in back, the section configuration that is dehydrating tube can be as the section configuration of heating part heating tube, just on the tube wall of dehydrating tube array arrangement mesh, dehydrating tube is inner by cereal, dehydrating tube external vacuum, dehydrating tube top also is provided with taper grain-guiding plate 17.
Embodiment two:
Basic identical with embodiment one, something in common no longer repeats.Difference is that referring to Figure 15～Figure 23, this embodiment adopts hot water or steam.Its storage part 1, dehydration portion 3 etc. and embodiment one, identical.3 heat extraction medium inlets 11, heating part and thermal medium outlet 14 are different from embodiment one, can adopt one of four kinds of forms shown in Figure 16 and Figure 17, Figure 18 and Figure 19, Figure 20 and Figure 21 and Figure 22 and 23.
Embodiment three:
Referring to Figure 24, present embodiment is the expansion on embodiment one basis, becomes one section drying and is the multistage drying, and every section drying comprises a heating part and a dehydration portion, and increases a delay section between each section. Comprise heating part 1,1 ', 1 as three sections dryings ", dehydration portion 2,2 ', 2 ".Connect storage part 1 on first dryer section top, last dryer section bottom links to each other with lower cone 5, between first dryer section and second dryer section, increase by 20 connections of a delay section, between second dryer section and the 3rd dryer section, increase a delay section 20 ' and connect.Can a shared thermal medium source and vacuum source between each section, or opposition is used separately thermal medium source and vacuum pumping pump.
Embodiment four:
Referring to Figure 25, present embodiment is the expansion on embodiment two bases, becomes one section drying and is the multistage drying, and every section drying comprises a heating part and a dehydration portion, and increases a delay section between each section. Comprise heating part 1,1 ', 1 as three sections dryings ", dehydration portion 2,2 ', 2 ".Connect storage part 1 on first dryer section top, last dryer section bottom links to each other with lower cone 5, between first dryer section and second dryer section, increase by 20 connections of a delay section, between second dryer section and the 3rd dryer section, increase a delay section 20 ' and connect.Can a shared thermal medium source and vacuum source between each section, or opposition is used separately thermal medium source and vacuum pumping pump.
Claims (7)
1, the utility model provides a kind of cereal low-temperature vacuum drying device, contain charging seal valve, storage part, heating part, vacuum dehydration part, vacuum pumping pump, lower cone, unloading sealed valve device, it is characterized in that the heating tube of heating part together with the common sealing medium passing cavity forming of the inlet of thermal medium, thermal medium outlet, sealing plate, side plate and grain stream through passage.
2, cereal low-temperature vacuum drying device according to claim 1, the heating tube that it is characterized in that the heating part vertically is provided with, the heating tube outer wall is together with inlet, thermal medium outlet, upper-lower seal plate, the common medium passing cavity of forming of four sides side plate of thermal medium, the inner chamber of heating tube forms grain stream through passage, and the section of heating tube adopts one of rectangle, short rectangle, square, circular configuration form.
3, cereal low-temperature vacuum drying device according to claim 1 is characterized in that being filled with the graininess heat-storage medium in the medium passing cavity of heating part.
4, cereal low-temperature vacuum drying device according to claim 1 is characterized in that the heating tube top of heating part is provided with grain-guiding plate, and what grain-guiding plate was provided with top below or square top and round bottom hole leads the grain taper hole.
5, cereal low-temperature vacuum drying device according to claim 1, it is characterized in that vacuum dehydration part by the vacuum dehydration pipe of the band punching of some together with upper and lower plates, four sides side plate with vacuumize outlet and form.
6, cereal low-temperature vacuum drying device according to claim 1, the vacuum dehydration pipe that it is characterized in that vacuum dehydration part vertically is provided with, the outer wall of vacuum dehydration pipe becomes vacuum cavity together with upper and lower plates with four sides side plate mutual group, the inwall of vacuum dehydration pipe is formed grain stream through passage, the section of vacuum dehydration pipe adopts one of rectangle, short rectangle, square, circular configuration form, the tube wall of the vacuum dehydration pipe mesh that gathered, above vacuum dehydration pipe top is provided with below or square top and round bottom lead the grain cone-plate.
7, a kind of cereal low-temperature vacuum drying device according to claim 1, the vacuum dehydration pipe horizontally set that it is characterized in that dehydration portion, the inwall of vacuum dehydration pipe is together with opposing sideplates and vacuumize outlet composition vacuum cavity, grain stream is formed through passage in space between the vacuum dehydration pipe, and the section of vacuum dehydration pipe is the chevron structure of last point below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520029350 CN2896159Y (en) | 2005-10-21 | 2005-10-21 | Grain low-temeprature vacuum drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520029350 CN2896159Y (en) | 2005-10-21 | 2005-10-21 | Grain low-temeprature vacuum drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2896159Y true CN2896159Y (en) | 2007-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520029350 Expired - Fee Related CN2896159Y (en) | 2005-10-21 | 2005-10-21 | Grain low-temeprature vacuum drying device |
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| CN (1) | CN2896159Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618346A (en) * | 2012-03-22 | 2012-08-01 | 解欣业 | High-efficiency low-temperature vacuum brown-coal upgrading device and process |
| CN104061773A (en) * | 2013-10-14 | 2014-09-24 | 长春吉大科学仪器设备有限公司 | Circulating dryer for cereals |
| WO2015085634A1 (en) * | 2013-12-13 | 2015-06-18 | 长春吉大科学仪器设备有限公司 | Total-weight detection-based method and system thereof for on-line measuring and controlling moisture in circulation drying of grain |
-
2005
- 2005-10-21 CN CN 200520029350 patent/CN2896159Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618346A (en) * | 2012-03-22 | 2012-08-01 | 解欣业 | High-efficiency low-temperature vacuum brown-coal upgrading device and process |
| CN104061773A (en) * | 2013-10-14 | 2014-09-24 | 长春吉大科学仪器设备有限公司 | Circulating dryer for cereals |
| CN104061773B (en) * | 2013-10-14 | 2016-07-06 | 长春吉大科学仪器设备有限公司 | A kind of corn circulation dryer |
| WO2015085634A1 (en) * | 2013-12-13 | 2015-06-18 | 长春吉大科学仪器设备有限公司 | Total-weight detection-based method and system thereof for on-line measuring and controlling moisture in circulation drying of grain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070502 Termination date: 20091123 |