CN115138313B - Polymerization reaction device for polylactic acid production - Google Patents
Polymerization reaction device for polylactic acid production Download PDFInfo
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- CN115138313B CN115138313B CN202210750252.0A CN202210750252A CN115138313B CN 115138313 B CN115138313 B CN 115138313B CN 202210750252 A CN202210750252 A CN 202210750252A CN 115138313 B CN115138313 B CN 115138313B
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- baffles
- static mixer
- polymerization reaction
- polylactic acid
- mixer body
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- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 56
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 26
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000000155 melt Substances 0.000 claims abstract description 42
- 230000003068 static effect Effects 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012752 auxiliary agent Substances 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000006698 induction Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
- C08G63/08—Lactones or lactides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/785—Preparation processes characterised by the apparatus used
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention belongs to the technical field of polylactic acid preparation, and relates to a polymerization reaction device for polylactic acid production, which comprises a polymerization reactor body, a stirring assembly and a static mixer body, wherein one end of the static mixer body is provided with a discharge pipe, a feed pipe of the static mixer body is provided with a circulating pump, the feed end of the feed pipe is provided with a guide assembly, a plurality of first baffles and a plurality of second baffles are arranged in the static mixer body, a plurality of through holes are formed in the first baffles and the second baffles, and the outer wall of the static mixer body and the feed pipe are provided with swinging assemblies. The invention not only improves the effect of polymerization reaction and the conversion rate of products, but also improves the circulating pipeline, the circulating pipeline can be used without waiting for the melt filled in the polymerization reactor body, and the swinging component is added to enable all the first baffles to swing, so that the flowing melt can be toggled back and forth when the first baffles swing, and the mixing effect of the melt and the auxiliary agent is improved.
Description
Technical Field
The invention relates to the technical field of polylactic acid preparation, in particular to a polymerization reaction device for producing polylactic acid.
Background
The conventional polylactic acid polymerization reaction device generally adopts a film reactor, special-shaped parts are distributed in the film reactor, when a polymerization melt moves from bottom to top, laminar flow is formed, a certain level pushing effect is achieved, continuous polymerization is realized by the polymerization mode, but the device has high melt viscosity, low conveying speed and low production efficiency; the auxiliary agent and the melt are not uniformly dispersed, so that the conversion rate of the product is low; meanwhile, in the laminar flow process, part of melt has a residence phenomenon close to each surface in the container, the reaction time of materials has a large difference, some reactions are incomplete, and some residence time is excessively long to be degraded, so that the overall molecular weight distribution of the melt is wider, and the product quality is influenced.
At present, some improved polylactic acid polymerization reaction devices on the market adopt vertical and kettle type stirring to drive melt and auxiliary agent to carry out polymerization reaction, the flow direction of the melt can only be along the rotation direction of a stirrer, the reaction temperature and time of the melt at each interface are inconsistent, the molecular weight distribution of polylactic acid slices is wider, meanwhile, no circulating device exists in the polymerization process, the melt and the auxiliary agent are insufficient in reaction, the product conversion rate is influenced, and the production cost is high.
The polylactic acid polymerization reaction device and system with the publication number of CN111346579B in Chinese patent literature comprises a polymerization reactor, an agitating component arranged in a flow channel of the polymerization reactor, a circulating pipe fitting, a static mixer arranged on the circulating pipe fitting and a circulating pump, wherein the agitating component comprises an electromagnetic winding mechanism and a magnetic induction piece, the electromagnetic winding mechanism is arranged along the inner wall of the polymerization reactor in a surrounding manner, and a gap is formed between the electromagnetic winding mechanism and the magnetic induction piece and surrounds the magnetic induction piece, so that the magnetic induction piece and the electromagnetic winding mechanism can generate electromagnetic induction, the magnetic induction piece generates autorotation around an axis of the magnetic induction piece, and a thread groove is formed on the magnetic induction piece. The polylactic acid polymerization reaction device can improve the effect of polymerization reaction and improve the conversion rate of products.
However, the above patents still have the disadvantages: 1. the inside of the static mixer is provided with a plurality of rectangular stress plates which are alternately arranged, through holes are formed in the rectangular stress plates, the rectangular stress plates can properly block the melt, and the rectangular stress plates can also mix the auxiliary agent and the melt, however, the static rectangular stress plates are adopted to realize mixing, so that the mixing effect is poor; 2. the feed inlet of the circulation pipeline is close to the melt discharge port, and the circulation pump can pump the melt into the circulation pipeline only when the melt in the polymerization reactor is nearly fully loaded, so that the circulation pipeline is limited.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems of poor mixing effect of a static mixer and limitation of a circulating pipeline in the comparison document in the background art, the invention provides a polymerization reaction device for producing polylactic acid.
The invention provides a polymerization reaction device for polylactic acid production, which comprises a polymerization reactor body, and a stirring assembly arranged in the polymerization reactor body, wherein a melt feed inlet and a melt discharge outlet are formed in the polymerization reactor body, the stirring assembly divides the polymerization reactor body into a feed zone and a discharge zone, the polymerization reaction device further comprises a static mixer body, one end of the static mixer body is provided with a discharge pipe communicated with the feed zone, the other end of the static mixer body is provided with a feed pipe communicated with the discharge zone, a circulating pump is arranged on the feed pipe, the feed end of the feed pipe is provided with a guide assembly close to the stirring assembly, a plurality of first baffles and a plurality of second baffles are arranged in the static mixer body, all the first baffles and all the second baffles are arranged in a staggered manner, a plurality of through holes are formed in the first baffles and the second baffles, and the outer wall of the static mixer body and the feed pipe are provided with swing assemblies for driving all the first baffles to swing; adopt the material guiding component to be close the stirring subassembly with circulation line's inlet port, then need not to wait to be full of the fuse-element in the polymerization reactor body and just can realize the circulation, all first baffles can produce the swing through swing subassembly, in addition with all second baffles are crisscross setting, therefore make fuse-element and auxiliary agent can intensive mixing.
In some embodiments, the material guiding component is an L-shaped guiding pipe, and a plurality of feeding holes are formed in the L-shaped guiding pipe; the melt can enter the L-shaped guide pipe through the feeding hole and then enter the feeding pipe.
In some embodiments, the diameter of the through hole and the diameter of the feed hole are both no less than 10cm; the smoothness of the melt passage can be improved.
In some embodiments, the swinging component comprises a rotating roller, a sliding seat, a sliding shell, a linkage rack and a plurality of linkage gears, wherein a mounting shell with a U-shaped section is arranged on the feeding pipe, first rotating shafts are arranged on two sides of one end of the first baffle, a plurality of stress plates arranged along the circumference of the rotating roller are arranged on the rotating roller, cambered surfaces attached to the inner wall of the mounting shell are arranged on the stress plates, second rotating shafts are arranged on two ends of the rotating roller, a linkage disc coaxial with the second rotating shafts is arranged on the second rotating shafts, a first hinge shaft is arranged on the linkage disc, a linkage rod is hinged on the first hinge shaft, a sliding block is arranged in the sliding shell, second hinge shafts are arranged on two outer walls of one end of the sliding shell, a connecting piece is arranged on one outer wall of one side of the sliding shell, the two rods are hinged with the two second hinge shafts respectively, the sliding seat is arranged on the side wall of the static mixer body, the sliding shell is arranged on the sliding block, the linkage rod is arranged on the linkage rack and is meshed with the first hinge shaft, and the linkage rack is arranged on one side of the linkage gear; the force of the circulating pump sucking the melt is utilized to enable the melt to drive the rotating roller and the linkage disc to continuously rotate when the melt flows, the linkage disc enables the sliding shell to reciprocate on the sliding seat in a small amplitude through cooperation among the linkage rod, the first hinge shaft and the second hinge shaft, and then the moving force can be transmitted to the first baffle plate to form swing.
In some embodiments, the connecting piece comprises a plurality of U-shaped connecting strips, all the U-shaped connecting strips are sequentially arranged along the length of the sliding shell, and the linkage rack is arranged on all the U-shaped connecting strips; the overall weight of the slide case is reduced while the strength of the connection is ensured.
In some embodiments, a shovel material part connected with the cambered surface is arranged at one end of the stress plate, which is far away from the rotating roller; the shovel material part can shovel the melt that is located in the installation shell out from inside it.
In some embodiments, two swing assemblies are arranged, the other swing assembly is arranged on the outer wall of the static mixer body and the discharging pipe, and the swing assembly is in transmission connection with all the second baffles; thus, the second baffle plate can swing, and the mixing effect is further improved.
In some embodiments, a first chain wheel is installed on a first rotating shaft, far away from the linkage gear, on the first baffle plate, the second baffle plate is rotatably arranged on the static mixer body, and a second chain wheel is arranged on the second baffle plate, and the first chain wheel is in transmission connection with the second chain wheel through a chain; when the first baffle plate swings, the rotating force can be transmitted to the second baffle plate through the cooperation of the first sprocket, the second sprocket and the chain, so that the second baffle plate also swings synchronously.
In some embodiments, both sides of the first baffle and both sides of the second baffle are provided with inclined surfaces; both sides of the first baffle and both sides of the second baffle can play a role in scraping the melt retained on the inner wall of the static mixer body.
The invention has the beneficial effects that:
According to the polymerization reaction device for polylactic acid production, the material guide assembly is used for enabling the inlet of the circulating pipeline to be close to the stirring assembly, the circulating pipeline can be used without waiting for the fact that the polymerization reactor body is filled with melt, the swinging assembly is added to enable all the first baffles to swing, the flowing melt can be toggled back and forth when the first baffles swing, and therefore the mixing effect of the melt and the auxiliary agent is improved.
Secondly, the second baffle plate can swing, so that the mixing effect of the melt and the auxiliary agent is further improved.
Thirdly, the polymerization reaction device for polylactic acid production effectively utilizes melt flow force generated when the circulating pump pumps in melt, and the melt continuously impacts the stress plate when flowing in the feeding pipe or the discharging pipe, and the stress plate can convert the impact force into the rotating force of the rotating roller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a polymerization apparatus for producing polylactic acid according to the present invention;
FIG. 2 is a partial sectional view of a polymerization reaction apparatus for producing polylactic acid according to the present invention;
FIG. 3 is a schematic perspective view of a static mixer body;
FIG. 4 is a cross-sectional view of a static mixer body;
FIG. 5 is a second cross-sectional view of the static mixer body;
FIG. 6 is an enlarged view at A in FIG. 5;
FIG. 7 is a schematic perspective view of a static mixer body;
Fig. 8 is a third cross-sectional view of the static mixer body.
Reference numerals: 100. a polymerization reactor body; 101. a melt feed port; 102. a melt discharge port; 103. a feed zone; 104. a discharge zone; 200. a stirring assembly; 1. a static mixer body; 11. a discharge pipe; 12. a feed pipe; 121. a mounting shell; 13. a circulation pump; 14. a first baffle; 141. a through hole; 142. a first rotating shaft; 143. a first sprocket; 144. an inclined plane; 145. a cantilever; 146. a synchronizing lever; 15. a second baffle; 151. a second sprocket; 2. a swing assembly; 21. a rotating roller; 211. a force-bearing plate; 212. a cambered surface; 213. a linkage disc; 214. a first hinge shaft; 215. a linkage rod; 216. a shovel material part; 22. a slide; 23. a slide shell; 231. a slide block; 232. a second hinge shaft; 24. a linkage rack; 25. a linkage gear; 26. a connecting piece; 261. a U-shaped connecting strip; 3. an L-shaped guide tube; 31. and a feed hole.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
In this embodiment, as shown in fig. 1 to 8, a polymerization reaction apparatus for producing polylactic acid comprises a polymerization reactor body 100 and a stirring assembly 200 provided in the polymerization reactor body 100, wherein the polymerization reactor body 100 is provided with a melt feed port 101 and a melt discharge port 102, the polymerization reactor body 100 and the stirring assembly 200 have the same structure as those of a polymerization reactor and a stirring assembly of a comparison document in the background art, the stirring assembly 200 divides the interior of the polymerization reactor body 100 into a feed region 103 and a discharge region 104, a static mixer body 1 is further provided, one end of the static mixer body 1 is provided with a discharge pipe 11 communicated with the feed region 103, the other end of the static mixer body 1 is provided with a feed pipe 12 communicated with the discharge region 104, a circulation pump 13 is mounted on the feed pipe 12, the feed end of the feed pipe 12 is provided with a guide assembly close to the stirring assembly 200, the inlet of the circulation pipeline is close to the stirring assembly 200 by utilizing the material guiding assembly, so that the melt in the polymerization reactor body 100 can circulate without being fully loaded, the material guiding assembly is an L-shaped guide pipe 3, a plurality of feeding holes 31 are formed in the L-shaped guide pipe 3, the melt can be guided into the L-shaped guide pipe 3 through the feeding holes 31 and then enter the feeding pipe 12, the feeding holes 31 are arranged to be not smaller than 10cm for enabling the melt to smoothly enter the L-shaped guide pipe 3, a plurality of first baffles 14 and a plurality of second baffles 15 are arranged in the static mixer body 1, all the first baffles 14 and all the second baffles 15 are arranged in a staggered manner, a plurality of through holes 141 are formed in the first baffles 14 and the second baffles 15 for enabling the melt to smoothly pass through, the through holes 141 are arranged to be not smaller than 10cm, the outer wall of the static mixer body 1 and the feeding pipe 12 are provided with a swinging component 2.
All first baffles 14 can be made to produce the swing through swing subassembly 2, swing subassembly 2 includes rotor 21, slide 22, slide shell 23, linkage rack 24 and a plurality of linkage gear 25, be equipped with the installation shell 121 that the cross-section is U on the inlet pipe 12, all be equipped with first pivot 142 on the both sides of first baffle 14 one end, be equipped with a plurality of atress board 211 that set up along its circumference on the rotor 21, be equipped with the cambered surface 212 with installation shell 121 inner wall laminating on the atress board 211, both ends of rotor 21 all are equipped with the second pivot, be equipped with the linkage dish 213 rather than coaxial line in the second pivot, be equipped with first articulated shaft 214 on the linkage dish 213, be equipped with first articulated shaft 214 on the first articulated shaft 214, articulated the installation gangbar 215 on the first articulated shaft 214, be equipped with slider 231 in the slide shell 23, all be equipped with second articulated shaft 232 on the both sides outer wall of slide shell 23 one side of all, be equipped with connecting piece 26 on one side outer wall of slide shell 23 through the second pivot rotation setting in installation shell 121, two gangbar 215 are articulated with two second articulated shaft 232 respectively, slide 22 sets up on the side wall of static mixer body 1, slide shell 23 through setting up on rack 24 and set up on the first pivot 25 and the same side of rack 25, all links are connected on the first rack 24, one side of the linkage rack is connected.
Principle of swing: the circulating pump 13 pumps the melt into the feeding pipe 12, because the melt has a certain flow rate after being pumped, the melt can collide with the stress plate 211 after passing through the mounting shell 121, the stress plate 211 converts the collision force into a rotating force to drive the rotating roller 21 and the two first rotating shafts 142 to rotate around the axis of the first rotating shaft 142, one end of the stress plate 211 far away from the rotating roller 21 is provided with the shoveling part 216 connected with the cambered surface 212 because partial melt possibly stays in the mounting shell 121, as shown in fig. 5 and 6, the shoveling part 216 can scoop the melt on the inner wall of the mounting shell 121 when rotating along with the stress plate 211, after the shoveling part 216 rotates into the feeding pipe 12, the melt scooped up on the shoveling part 216 can be separated, the first rotating shaft 142 drives the corresponding linkage disc 213 to synchronously rotate, one end of the linkage disc 213 can drive the rod 215 to synchronously move, and after the other end of the linkage rod 215 drives the second hinge shaft 232 to move, the second hinge shaft 232 drives the whole shell 23 to move along with the rack 23 to the rack 23, and the sliding seat 23 can slide along with the small amplitude of the rack 23, and the sliding seat 23 can be connected with the sliding seat 23, and the sliding seat is formed by the sliding seat is further, and the sliding seat is formed by the sliding seat is a sliding seat 23, and the sliding seat is a sliding seat is formed by a sliding seat 23.
Preferably, in order to improve the stability of the swinging motion of all the first baffles 14, a cantilever 145 may be provided on the first rotating shaft 142, and a synchronizing rod 146 may be further provided, and all the cantilever 145 may be hinged to the synchronizing rod 146.
To further enhance the mixing effect of the melt and the auxiliary agent, two ways are used to allow the second baffle 15 to oscillate as well.
The first way is: two swinging assemblies 2 are arranged, the other swinging assembly 2 is arranged on the outer wall of the static mixer body 1 and the discharging pipe 11, the swinging assemblies 2 are in transmission connection with all the second baffles 15, and the swinging assemblies 2 drive all the second baffles 15 to swing by utilizing the flow velocity of the melt in the discharging pipe 11.
The second way is: the first baffle 14 is provided with a first sprocket 143 on a first rotating shaft 142 far away from the linkage gear 25, the second baffle 15 is rotatably arranged on the static mixer body 1, the second baffle 15 is provided with a second sprocket 151, the first sprocket 143 is connected with the second sprocket 151 through chain transmission, the first sprocket 143 can rotate while the first baffle 14 swings, the first sprocket 143 transmits rotating force to the second sprocket 151, and the second sprocket 151 drives the second baffle 15 to swing.
Of course, the first sprocket 143 and the second sprocket 151 may be connected in a one-to-one correspondence, or may be provided with chain loops on all the first sprocket 143 and the second sprocket 151, as long as synchronous oscillation can be achieved.
Preferably, the inclined surfaces 144 are provided on both sides of the first baffle 14 and both sides of the second baffle 15, so that both sides of the first baffle 14 and both sides of the second baffle 15 are shaped like a spade knife, thereby enabling both sides of the first baffle 14 and both sides of the second baffle 15 to function as scraping off the melt retained on the inner wall of the static mixer body 1.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The polymerization reaction device for polylactic acid production comprises a polymerization reactor body (100) and a stirring assembly (200) arranged in the polymerization reactor body (100), wherein a melt feeding hole (101) and a melt discharging hole (102) are formed in the polymerization reactor body (100), the stirring assembly (200) divides a feeding area (103) and a discharging area (104) in the polymerization reactor body (100), the polymerization reaction device is characterized by further comprising a static mixer body (1), one end of the static mixer body (1) is provided with a discharging pipe (11) communicated with the feeding area (103), the other end of the static mixer body (1) is provided with a feeding pipe (12) communicated with the discharging area (104), a circulating pump (13) is arranged on the feeding pipe (12), the feeding end of the feeding pipe (12) is provided with a guide assembly close to the stirring assembly (200), a plurality of first baffles (14) and a plurality of second baffles (15) are arranged in the static mixer body (1), all the first baffles (14) and all the second baffles (15) are arranged in a staggered manner, a plurality of first baffles (14) and a plurality of through holes (141) are formed in the static mixer body (1), the outer wall of the static mixer body (1) and the feeding pipe (12) are provided with swinging assemblies (2) for driving all the first baffles (14) to swing;
The swinging component (2) comprises a rotating roller (21), a sliding seat (22), a sliding shell (23), a linkage rack (24) and a plurality of linkage gears (25), wherein a U-shaped mounting shell (121) is arranged on the feeding pipe (12), a first rotating shaft (142) is arranged on two sides of one end of the first baffle (14), a plurality of stress plates (211) arranged along the circumference of the rotating roller are arranged on the rotating roller (21), cambered surfaces (212) attached to the inner wall of the mounting shell (121) are arranged on the stress plates (211), second rotating shafts are arranged on two ends of the rotating roller (21), a linkage disc (213) coaxial with the sliding shell is arranged on the second rotating shaft, a first hinge shaft (214) is arranged on the linkage disc (213), a linkage rod (215) is hinged on the first hinge shaft (214), a sliding block (231) is arranged in the sliding shell (23), a second hinge shaft (232) is arranged on the outer wall of two sides of one end of the sliding shell (23), a connecting piece (26) is arranged on the outer wall of one side of the sliding shell (23), the rotating roller (21) is arranged on the side wall of the rotating body (22) in a static state, the two side walls of the sliding shell (121) are arranged on the two side walls of the sliding shell (121) respectively, the sliding shell (23) is arranged on the sliding seat (22) in a sliding mode through the sliding block (231), the linkage rack (24) is arranged on the connecting piece (26), all the linkage gears (25) are respectively arranged on the first rotating shafts (142) on the same side, and the linkage gears (25) are meshed with the linkage rack (24).
2. The polymerization reaction apparatus for producing polylactic acid according to claim 1, wherein: the material guiding assembly is an L-shaped guide pipe (3), and a plurality of feeding holes (31) are formed in the L-shaped guide pipe (3).
3. The polymerization reaction apparatus for producing polylactic acid according to claim 2, wherein: the diameter of the through hole (141) and the diameter of the feeding hole (31) are not smaller than 10cm.
4. The polymerization reaction apparatus for producing polylactic acid according to claim 3, wherein: the connecting piece (26) comprises a plurality of U-shaped connecting strips (261), all the U-shaped connecting strips (261) are sequentially arranged along the length of the sliding shell (23), and the linkage rack (24) is arranged on all the U-shaped connecting strips (261).
5. The polymerization reaction apparatus for producing polylactic acid according to claim 4, wherein: one end of the stress plate (211) far away from the rotating roller (21) is provided with a shovel material part (216) connected with the cambered surface (212).
6. The polymerization reaction apparatus for producing polylactic acid according to claim 5, wherein: two swinging assemblies (2) are arranged, the other swinging assembly (2) is arranged on the outer wall of the static mixer body (1) and the discharging pipe (11), and the swinging assembly (2) is in transmission connection with all second baffles (15).
7. The polymerization reaction apparatus for producing polylactic acid according to claim 5, wherein: the first baffle (14) is provided with a first sprocket (143) on a first rotating shaft (142) far away from the linkage gear (25), the second baffle (15) is rotatably arranged on the static mixer body (1), the second baffle (15) is provided with a second sprocket (151), and the first sprocket (143) is connected with the second sprocket (151) through chain transmission.
8. The polymerization reaction apparatus for producing polylactic acid according to claim 6 or 7, wherein: inclined planes (144) are arranged on two sides of the first baffle (14) and two sides of the second baffle (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210750252.0A CN115138313B (en) | 2022-06-28 | 2022-06-28 | Polymerization reaction device for polylactic acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210750252.0A CN115138313B (en) | 2022-06-28 | 2022-06-28 | Polymerization reaction device for polylactic acid production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115138313A CN115138313A (en) | 2022-10-04 |
| CN115138313B true CN115138313B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210750252.0A Active CN115138313B (en) | 2022-06-28 | 2022-06-28 | Polymerization reaction device for polylactic acid production |
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| CN103100327A (en) * | 2011-11-11 | 2013-05-15 | 中煤能源黑龙江煤化工有限公司 | Solid material mixing device |
| CN108057352A (en) * | 2017-12-28 | 2018-05-22 | 郑铁顺 | A kind of rotten sour urea waste liquid treatment device of zinc |
| CN111346579A (en) * | 2020-04-29 | 2020-06-30 | 吉林中粮生化有限公司 | Polylactic acid polymerization reaction device and system |
| CN215963022U (en) * | 2021-08-03 | 2022-03-08 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Novel vertical tube type ammonia-air mixer |
| CN216537859U (en) * | 2021-12-21 | 2022-05-17 | 鞍山阳天冶金能源技术有限公司 | Mixing device for metal cutting gas |
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