CN114909887A - Grain starch stoving extraction element is used in polylactic acid preparation - Google Patents
Grain starch stoving extraction element is used in polylactic acid preparation Download PDFInfo
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- CN114909887A CN114909887A CN202210591332.6A CN202210591332A CN114909887A CN 114909887 A CN114909887 A CN 114909887A CN 202210591332 A CN202210591332 A CN 202210591332A CN 114909887 A CN114909887 A CN 114909887A
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- starch
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- 229920002472 Starch Polymers 0.000 title claims abstract description 59
- 239000008107 starch Substances 0.000 title claims abstract description 59
- 235000019698 starch Nutrition 0.000 title claims abstract description 59
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 19
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000605 extraction Methods 0.000 title claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 120
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 235000013339 cereals Nutrition 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 239000011229 interlayer Substances 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 10
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 10
- 241001330002 Bambuseae Species 0.000 abstract description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 10
- 239000011425 bamboo Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 10
- 235000014655 lactic acid Nutrition 0.000 description 5
- 239000004310 lactic acid Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
- 239000008103 glucose Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- -1 lactide Chemical compound 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
- F26B11/0486—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements being held stationary, e.g. internal scraper blades
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/06—Drying; Forming
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention provides a grain starch drying and extracting device for polylactic acid preparation, and mainly relates to the field of grain starch extraction. The utility model provides a cereal starch stoving extraction element is used in polylactic acid preparation, includes a stoving section of thick bamboo, central driving lever and heating device, a stoving section of thick bamboo is the slope setting, the center driving lever runs through set up in the center of a stoving section of thick bamboo just center driving lever both ends all surpass a stoving section of thick bamboo, a stoving section of thick bamboo both sides set up the stoving support that is used for supporting a stoving section of thick bamboo, center driving lever both ends all set up the driving lever support that is used for supporting the center driving lever, the stoving section of thick bamboo outside sets up a plurality of intermediate layers, evenly set up a plurality of separation blades in the stoving section of thick bamboo, the center driving lever outside sets up a plurality of plectrums, set up barrel drive arrangement on the stoving section of thick bamboo outer wall, center driving lever one end sets up well core rod drive arrangement. The invention has the beneficial effects that: the invention can uniformly dry the wet starch, has good overall drying effect on the starch, and can quickly dry and store the extracted grain starch.
Description
Technical Field
The invention mainly relates to the field of extraction of grain starch, and particularly relates to a grain starch drying and extracting device for polylactic acid preparation.
Background
The production of polylactic acid takes lactic acid as a raw material, and most of the traditional lactic acid fermentation is starchy raw materials. The extraction of starch from grain and the subsequent production of polylactic acid from grain starch is currently one of the most common forms of process. The method comprises grinding hull crops such as corn, extracting starch therefrom, making starch into unrefined glucose, and fermenting glucose in a manner similar to that of beer or alcohol production, wherein the glucose is fermented to become lactic acid similar to that added to human muscle tissue. The lactic acid monomer is converted into an intermediate product, namely water-reduced lactic acid, namely lactide, by a special concentration process, and the lactide monomer is subjected to vacuum purification and then is subjected to ring opening by a dissolving process without using a solvent, so that the monomer is polymerized, and the preparation of the polylactic acid is finished.
In the subsequent step of extracting the cereal starch, the wet starch needs to be dried and then stored. For drying starch, a scraper dryer is mainly used for drying at present, but the drying effect of the drying equipment at present is not uniform, and especially for wet starch with high humidity, the moisture removing effect is not good.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a grain starch drying and extracting device for polylactic acid preparation, which can uniformly dry wet starch, has a good overall drying effect on the starch, and can quickly dry and store the extracted grain starch.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a grain starch drying and extracting device for preparing polylactic acid comprises a drying cylinder, a central deflector rod and a heating device, wherein the drying cylinder is arranged in an inclined manner, the central deflector rod penetrates through the center of the drying cylinder, two ends of the central deflector rod both exceed the drying cylinder, two sides of the drying cylinder are provided with drying supports for supporting the drying cylinder, two ends of the central deflector rod are respectively provided with a deflector rod support for supporting the central deflector rod, the outer side of the drying cylinder is provided with a plurality of interlayers, the interlayers are uniformly distributed along the axis of the drying cylinder in a circumferential manner, the lower end of the drying cylinder is provided with a buffer cavity, the bottom of the drying cylinder is not covered by the buffer cavity, one side of the buffer cavity is provided with a through hole communicated with the interlayers, a plurality of baffle plates are uniformly arranged in the drying cylinder, the middle part of the central deflector rod penetrates through a heating channel, and the heating channel and the buffer cavity are both introduced into the hot air flow of the heating device, the outer side of the central driving lever is provided with a plurality of shifting pieces, the outer wall of the drying cylinder is provided with a cylinder body driving device, and one end of the central driving lever is provided with a central rod driving device.
The material enters from the higher end of the drying cylinder and is led out from the opening at the bottom of the lower end of the drying cylinder, which is not sealed by the buffer cavity.
The separation blade evenly sets up many circles along the axis direction in drying cylinder, every circle the separation blade is the circumference along drying cylinder inner wall and evenly sets up, two adjacent circles the separation blade sets up in a staggered way.
The shifting pieces are linearly and uniformly arranged on the outer wall of the central shifting rod along the axis of the central shifting rod, the shifting pieces are arranged in the gap between the two circles of the blocking pieces, and the adjacent shifting pieces are arranged on the central shifting rod in a staggered mode.
The heating device comprises a gas heating furnace and a blower, and the blower is used for sending the heat of the gas heating furnace into the buffer cavity and the heating channel.
The central deflector rod and the drying cylinder rotate in opposite directions.
The barrel driving device comprises ring teeth arranged in the middle of the drying barrel, a first driving box matched with the ring teeth and a barrel motor used for driving the first driving box.
The center rod driving device comprises a center rod motor and a second transmission mechanism, wherein the center rod motor is arranged at one end of the center driving rod, and the center rod motor drives the center driving rod to rotate through the second transmission mechanism.
Compared with the prior art, the invention has the beneficial effects that:
the invention is used as a ring of grain starch continuous extraction equipment, and is mainly used for drying extracted grain wet starch. This device has adopted the mode of two heats to dry wet starch, makes wet starch can receive the heat that comes from a stoving section of thick bamboo edge and a stoving section of thick bamboo center to carry out two-way even stoving to wet starch, make starch be heated more evenly, the drying efficiency of starch is higher, improves the efficiency of whole starch preparation flow. This device has still been collocated the wet starch of central poking rod in to drying cylinder and has been stirred, makes it can the intensive mixing, and even dries moisture, guarantees the uniformity that wet starch was dried.
Drawings
FIG. 1 is a schematic view of a first stereoscopic viewing structure of the present invention;
FIG. 2 is a schematic view of a second stereoscopic viewing structure of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a left side view schematic of the present invention;
FIG. 5 is a schematic view of a disassembled structure of the drying cylinder and the central deflector rod of the present invention;
FIG. 6 is a schematic cross-sectional view of a cushion chamber of the present invention.
Reference numerals shown in the drawings: 1. a drying drum; 2. a central deflector rod; 3. a heating device; 4. a buffer chamber; 5. a cylinder driving device; 6. a center rod driving device; 11. drying the bracket; 12. an interlayer; 13. a baffle plate; 21. a deflector rod bracket; 22. a heating channel; 23. a shifting sheet; 24. a center rod motor; 25. a second transmission mechanism; 51. ring teeth; 52. a first drive case; 53. a cylinder motor.
Detailed Description
The invention is further described with reference to the accompanying drawings and the specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
As shown in fig. 1-6, the grain starch drying and extracting device for polylactic acid preparation of the present invention comprises a drying cylinder 1, a central shift lever 2 and a heating device 3, wherein the drying cylinder 1 is a drying place of wet starch, the drying cylinder 1 is obliquely arranged, the wet starch is introduced into the drying cylinder 1 from a higher end through a feeding mechanism, then the wet starch gradually moves to a lower end of the drying cylinder 1 under the action of gravity along with the rotation of the drying cylinder 1, and is dried by the heating device 3 on the way, so as to complete a rapid and uniform drying process of the wet starch.
The central driving lever 2 penetrates through the center of the drying cylinder 1, two ends of the central driving lever 2 exceed the drying cylinder 1, and the central driving lever 2 is used for stirring wet starch in the drying cylinder 1, so that the wet starch is continuously lifted in the drying cylinder 1 and is fully mixed with hot air flow, and the aim of uniformly drying is fulfilled.
The drying device is characterized in that drying supports 11 used for supporting the drying cylinder 1 are installed on two sides of the drying cylinder 1, bearing wheels installed on two sides of the drying cylinder 1 are arranged on the drying supports 11, bearing rings are welded on the outer wall of the drying cylinder 1 and are in contact with the bearing wheels, and annular edges are arranged on two sides of each bearing wheel and limit the bearing rings to prevent the drying cylinder 1 from deviating. The drying cylinder 1 is fixed between the bearing wheels at two sides through the bearing rings under the self gravity, and the drying cylinder 1 slowly rotates on the drying support 11 under the limit of the bearing wheels. And the two ends of the central deflector rod 2 are both provided with deflector rod brackets 21 for supporting the central deflector rod 2, and the central deflector rod 2 is connected with the deflector rod brackets 21 through bearings, so that the central deflector rod 2 can rotate on the deflector rod brackets 21. Specifically, the rotating speed of the central driving lever 2 is faster than that of the drying cylinder 1, and the rotating directions of the central driving lever 2 and the drying cylinder 1 are opposite, so that the wet starch in the drying cylinder 1 can be continuously and effectively stirred, the wet starch and hot air flow are fully mixed, and a more uniform drying effect is achieved.
The heating device 3 comprises a gas heating furnace and an air blower, and the air blower is divided into two-way pipelines through a three-way joint. The air blower is used for sending the heat of the gas heating furnace into the heating channel through the two-way pipeline to heat the outer wall of the drying cylinder 1 and the center of the drying cylinder 1, so that the wet starch is dried.
A plurality of interlayers 12 are arranged on the outer side of the drying cylinder 1, and the interlayers 12 are uniformly distributed along the axis of the drying cylinder 1 in a circumferential mode. The two ends of the interlayer 12 are communicated and used as a passage for hot air flow, so that the side wall of the drying cylinder 1 is heated.
The lower end of the drying cylinder 1 is provided with a buffer cavity 4, and the buffer cavity 4 is connected with the side surface of the drying cylinder 1 in a rotating and sealing manner. The buffer chamber 4 does not cover the bottom of the drying drum 1, and the uncovered part is a material outlet on the drying drum 1. The side of the buffer cavity 4 facing the drying cylinder 1 is provided with a through hole communicated with the interlayer 12, and the through hole can communicate the buffer cavity 4 with the interlayer 12, so that the buffer cavity can be used for heating the outer wall of the drying cylinder 1. Specifically, the through hole is located at the upstream of the material outlet in the rotation direction of the drying drum 1. When the drying drum is used, the air blower blows hot air into the buffer cavity 4, the hot air enters the interlayer 12 through the through hole to heat the side wall of the area of the drying drum 1, the heated area gradually moves to the bottom along with the rotation of the drying drum 1, and wet starch is dried on the bottom surface of the drying drum 1. The mode can greatly save the consumption of fuel gas, and simultaneously can prevent the bottom surface of the drying cylinder 1 from being gelatinized by overhigh heating temperature. The middle part of the central driving lever 2 is provided with a heating channel 22 in a penetrating way, and the heating channel 22 leads hot air into the pipeline through the other part of the air blower to heat the center of the drying cylinder 1. Specifically, the hot air flows in from the lower end of the heating channel 22 and out from the upper end. Through reverse heating, make the heat flow carry out more abundant mixture with wet starch, carry out better stoving to wet starch.
More specifically, a plurality of separation blades 13 of even installation in drying cylinder 1, separation blade 13 evenly sets up many circles, every circle along the axis direction in drying cylinder 1 separation blade 13 is the even setting of circumference along drying cylinder 1 inner wall, adjacent two circles separation blade 13 sets up in a staggered manner. Crisscross setting separation blade 13 can block in turn because the material of gravity decline to slow down the derivation speed of wet starch, ensure the stoving effect of wet starch. A plurality of shifting pieces 23 are arranged on the outer side of the central shifting rod 2, the shifting pieces 23 are linearly and uniformly arranged on the outer wall of the central shifting rod 23 along the axis of the central shifting rod, the shifting pieces 23 are arranged in the gap between two circles of the blocking pieces 13, and the adjacent shifting pieces 23 are arranged on the central shifting rod 23 in a staggered manner. The shifting sheet 23 is arranged in the gap between the adjacent baffle sheets 13, the shifting sheet 23 is close to the inner wall of the drying cylinder 1, and with the reverse rotation of the drying cylinder 1 and the central shifting rod 22, wet starch in the drying cylinder 1 can be alternately lifted through the shifting sheet 23, so that the wet starch and hot air are fully mixed, and the drying of the wet starch is accelerated.
Specifically, the drying cylinder 1 and the central deflector rod 2 are driven by the following power mechanisms: a barrel driving device 5 is installed on the outer wall of the drying barrel 1, and a center rod driving device 6 is installed at one end of the center deflector rod 2. The cylinder driving device 5 comprises a ring gear 51 welded at the middle part of the drying cylinder 1, a first driving box 52 matched with the ring gear 51, and a cylinder motor 53 for driving the first driving box 52. The drum motor 53 drives the drying drum 1 to rotate slowly by the deceleration of the first driving box 52. The central rod driving device 6 comprises a central rod motor 24 and a second transmission mechanism 25, wherein the central rod motor 24 is arranged at one end of the central driving rod 2, and the central rod motor 24 drives the central driving rod 2 to rotate through the second transmission mechanism 25. In the present embodiment, the second transmission mechanism 25 is driven by a belt, and preferably, the ratio of the rotation speed of the central shift lever 2 to the rotation speed of the drying cylinder 1 is 2: 1-5: 1.
Claims (8)
1. The utility model provides a cereal starch stoving extraction element is used in polylactic acid preparation, includes drying cylinder (1), central driving lever (2) and heating device (3), its characterized in that: the drying cylinder (1) is arranged in an inclined manner, the central driving lever (2) penetrates through the center of the drying cylinder (1), two ends of the central driving lever (2) exceed the drying cylinder (1), two sides of the drying cylinder (1) are provided with drying supports (11) used for supporting the drying cylinder (1), two ends of the central driving lever (2) are provided with driving lever supports (21) used for supporting the central driving lever (2), the outer side of the drying cylinder (1) is provided with a plurality of interlayers (12), the interlayers (12) are uniformly distributed along the axis of the drying cylinder (1) in a circumferential manner, the lower end of the drying cylinder (1) is provided with a buffer cavity (4), the bottom of the drying cylinder (1) is not covered by the buffer cavity (4), one side of the buffer cavity (4) is provided with a through hole communicated with the interlayers (12), and a plurality of blocking pieces (13) are uniformly arranged in the drying cylinder (1), the central heating device is characterized in that a heating channel (22) penetrates through the middle of the central driving lever (2), the heating channel (22) and the buffer cavity (4) are both led into hot air of the heating device (3), a plurality of shifting pieces (23) are arranged on the outer side of the central driving lever (2), a barrel driving device (5) is arranged on the outer wall of the drying barrel (1), and a center rod driving device (6) is arranged at one end of the central driving lever (2).
2. The drying and extracting device of the grain starch for preparing the polylactic acid according to claim 1, which is characterized in that: the material enters from the higher end of the drying cylinder (1) and is led out from the opening at the lower end of the drying cylinder (1) which is not sealed by the buffer cavity (4).
3. The drying and extracting device of the grain starch for preparing the polylactic acid according to claim 1, which is characterized in that: separation blade (13) evenly sets up many circles along the axis direction in drying cylinder (1), every circle separation blade (13) is the circumference along drying cylinder (1) inner wall and evenly sets up, two adjacent circles separation blade (13) set up in a staggered manner.
4. The drying and extracting device for the cereal starch for the preparation of polylactic acid according to claim 3, characterized in that: the shifting pieces (23) are linearly and uniformly arranged on the outer wall of the central shifting rod (23) along the axis of the central shifting rod, the shifting pieces (23) are arranged in the gap between the two circles of the blocking pieces (13), and the adjacent shifting pieces (23) are arranged on the central shifting rod (23) in a staggered mode.
5. The drying and extracting device for the cereal starch for the preparation of polylactic acid according to claim 1, characterized in that: the heating device (3) comprises a gas heating furnace and a blower, and the blower is used for sending the heat of the gas heating furnace into the buffer cavity (4) and the heating channel (22).
6. The drying and extracting device of the grain starch for preparing the polylactic acid according to claim 1, which is characterized in that: the central deflector rod (2) and the drying cylinder (1) rotate in opposite directions.
7. The drying and extracting device of the grain starch for preparing the polylactic acid according to claim 1, which is characterized in that: the barrel driving device (5) comprises ring teeth (51) arranged in the middle of the drying barrel (1), a first driving box (52) matched with the ring teeth (51) and a barrel motor (53) used for driving the first driving box (52).
8. The drying and extracting device of the grain starch for preparing the polylactic acid according to claim 1, which is characterized in that: the center rod driving device (6) comprises a center rod motor (24) and a second transmission mechanism (25), wherein the center rod motor (24) is arranged at one end of the center driving rod (2), and the center rod motor (24) drives the center driving rod (2) to rotate through the second transmission mechanism (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591332.6A CN114909887B (en) | 2022-05-27 | 2022-05-27 | Cereal starch stoving extraction element for polylactic acid preparation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591332.6A CN114909887B (en) | 2022-05-27 | 2022-05-27 | Cereal starch stoving extraction element for polylactic acid preparation |
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| CN114909887A true CN114909887A (en) | 2022-08-16 |
| CN114909887B CN114909887B (en) | 2023-11-03 |
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| CN205316859U (en) * | 2016-01-21 | 2016-06-15 | 徐州市格瑞颜料有限公司 | Powdered pigment drying device |
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