A high-performance continuous drying equipment for the production of polylactic acid (PLA)

Abstract

The invention discloses a high-performance continuous drying equipment for polylactic acid (PLA) production, which belongs to the technical field of drying of environmentally friendly materials, and comprises a feeding assembly, wherein the feeding assembly comprises a drying cylinder shell, an air guide tube is fixedly connected inside the drying cylinder shell, a fixed pipe is fixedly connected inside the air guide tube, a feeding cylinder is connected to an upper side wall of the fixed pipe, a sliding hopper is fixedly connected inside the fixed pipe, one end of the fixed pipe is connected to a hot air blower, an end of the sliding hopper away from the hot air blower is rotatably connected to a transport assembly, and a driving assembly is fixedly connected to the drying cylinder shell; the driving assembly comprises a rotating transport cylinder fixedly connected to the drying cylinder shell, a fixed mounting plate is fixedly connected to the upper side wall of the rotating transport cylinder, and the device monitors the humidity of the air around the polylactic acid particles after drying through a monitoring assembly, and when it is detected that the air humidity does not meet the preset value, the polylactic acid particles can be re-injected for secondary drying through the driving assembly and the collecting assembly, thereby ensuring that the polylactic acid particles are effectively dried and improving the drying effect.

Description

Technical Field

[0001] The invention relates to the technical field of drying environmentally friendly materials, in particular to high-performance continuous drying equipment for producing polylactic acid (PLA). Background Art

[0002] Polylactic acid (PLA) is a biodegradable polymer based on lactic acid. It is mainly produced by fermenting starch in crops (such as corn, sugarcane, etc.) to produce lactic acid, and then formed through polymerization. The chemical structure of PLA is a linear polymer with good transparency, UV resistance and adjustable thermoplasticity, which makes it perform well in many applications. In practical applications, PLA is widely used to make disposable tableware, shopping bags, food packaging and textiles. Due to its biodegradable properties, PLA can be degraded into carbon dioxide and water by the action of microorganisms in a composting environment, usually within a few months to a few years. Compared with traditional plastics, PLA Significantly reduces the environmental burden, however, PLA's thermal stability and mechanical strength are relatively low, limiting its application in high-performance engineering fields. In general, polylactic acid is an environmentally friendly material that meets the needs of sustainable development and is suitable for use in situations where biodegradable properties are required. During the production process, the raw material of polylactic acid, lactic acid, is usually hygroscopic, so it needs to be dried to remove moisture. Moisture will cause incomplete polymerization during the polymerization process and form low molecular weight polymers, affecting the performance and quality of the final product. Pre-drying can ensure that polylactic acid reaches a higher molecular weight during the polymerization process, improve its strength and thermal stability, and thus meet application requirements.

[0003] A Chinese patent discloses a production system for biodegradable polylactic acid (authorization announcement number CN116007320B), which includes a drying section, a side wall of which is provided with an openable and closable discharge port, and the drying section is rotatably arranged in a protective shell; a temporary storage section with an open upper end is arranged below the drying section in the protective shell, and an openable and closable discharge hole is arranged at the lower end of the temporary storage section, and the discharge hole is opposite to the material outlet at the lower end of the protective shell.

[0004] In the process of drying polylactic acid particles, particle aggregation may lead to incomplete drying, thus affecting production quality, and further affecting subsequent molding processes such as injection molding, and ultimately leading to a decline in product quality. The existing drying device cannot effectively detect the humidity of the discharged polylactic acid particles, nor can it perform secondary drying on the particles that are not completely dried. In order to solve the above problems, a high-performance polylactic acid (PLA) production continuous drying equipment is proposed. Summary of the invention

[0005] The object of the present invention is to provide a high-performance polylactic acid (PLA) production continuous drying device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A high-performance continuous drying equipment for producing polylactic acid (PLA), comprising a feeding assembly, the feeding assembly comprising a drying cylinder shell, an air guide tube fixedly connected inside the drying cylinder shell, a fixed pipe fixedly connected inside the air guide tube, a feeding cylinder connected to the upper side wall of the fixed pipe, a sliding hopper fixedly connected inside the fixed pipe, one end of the fixed pipe connected to a hot air blower, an end of the sliding hopper away from the hot air blower rotatably connected to a transport assembly, and a driving assembly fixedly connected to the drying cylinder shell;

[0008] The driving assembly includes a rotating conveying drum fixedly connected to the drying drum shell, a fixed mounting plate fixedly connected to the upper side wall of the rotating conveying drum, a rotating plate rotatably connected inside the rotating conveying drum, a gear meshing with the rotating plate rotatably connected to the fixed mounting plate, a second driving motor fixedly connected to the side wall of the fixed mounting plate, and the output end of the second driving motor is fixedly connected to the gear, a plurality of evenly distributed partitions are fixedly connected to the side wall of the rotating plate, a material collecting assembly is arranged between every two partitions, an electric push rod is fixedly connected between the rotating conveying drum and the material collecting assembly, a monitoring assembly is fixedly connected to the lower side wall of the rotating conveying drum, and a material guiding assembly is fixedly connected to the drying drum shell.

[0009] As a further solution of the present invention, the transport assembly includes a first feed cylinder, the inner wall of which is fixedly connected to a first push thread plate, and a second feed cylinder is rotatably connected inside the drying cylinder shell, the inner wall of which is fixedly connected to a second push thread plate.

[0010] As a further solution of the present invention, a plurality of connecting rods are fixedly connected between the first feeding cylinder and the second feeding cylinder, a first driving motor is fixedly connected to the side wall of the drying cylinder shell, and an output end of the first driving motor is fixedly connected to the second feeding cylinder.

[0011] As a further solution of the present invention, the material collection assembly includes two material collection plates, a plurality of fixed connecting rods are fixedly connected between the two material collection plates, and a magnetic block is fixedly connected to one of the fixed connecting rods.

[0012] As a further solution of the present invention, the monitoring component includes an air duct fixed to the lower side wall of the aggregate plate, and the lower end of the air duct is connected to the monitoring tube.

[0013] As a further solution of the present invention, a magnetic plug magnetically connected to the magnetic block is slidably connected inside the monitoring tube, and a thrust spring is fixedly connected between the magnetic plug and the lower inner wall of the monitoring tube.

[0014] As a further solution of the present invention, a ventilation hole is drilled at the center of the magnetic plug, a sealing sheet is provided at the lower side of the magnetic plug, a spring plate is fixedly connected inside the ventilation hole, and a connecting spring is fixedly connected between the spring plate and the sealing sheet.

[0015] As a further solution of the present invention, a one-way valve and a humidity sensor are fixedly connected inside the air duct, and the humidity sensor is electrically connected to the electric push rod, and a filter is fixedly connected to the upper end of the air duct.

[0016] As a further solution of the present invention, the material guiding assembly includes a material guiding trough fixedly connected between the drying cylinder shell and the fixed pipe, and a material guiding arc plate is fixedly connected to the lower inner wall of the drying cylinder shell.

[0017] As a further solution of the present invention, a material guiding outer cylinder is fixedly connected to the lower side wall of the drying cylinder shell, and a material discharging pipe is connected to the lower side wall of the material guiding outer cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When the present invention is used, the humidity of the air around the dried polylactic acid particles is monitored by a monitoring component. When it is detected that the air humidity does not meet the preset value, the polylactic acid particles can be re-injected for secondary drying through the driving component and the aggregate component, thereby ensuring that the polylactic acid particles are effectively dried and improving the drying effect.

[0020] 2. When the present invention is used, the transport component can be used to extend the travel distance of the polylactic acid particles by utilizing the design of the reversible channel, thereby further improving the drying effect of the polylactic acid particles.

[0021] 3. When the present invention is used, it can cooperate with the sealing sheet component to prevent the air detected last time from remaining inside the monitoring tube, thereby improving the detection accuracy.

[0022] 4. When the present invention is used, the driving assembly, the material collection assembly, and the material guide assembly cooperate with each other to achieve batch discharging and precise detection of the device, thereby improving detection accuracy and production efficiency and reducing processing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a continuous drying equipment for producing high-performance polylactic acid (PLA);

[0024] Figure 2 This is a schematic diagram of the structure inside the drying cylinder shell of a high-performance polylactic acid (PLA) continuous drying equipment;

[0025] Figure 3 This is a schematic diagram of the structure of the driving component in a high-performance polylactic acid (PLA) continuous drying equipment;

[0026] Figure 4 This is a structural schematic diagram of the drying cylinder shell in a high-performance polylactic acid (PLA) continuous drying equipment;

[0027] Figure 5This is a schematic diagram of the structure of the driving component part of a high-performance polylactic acid PLA continuous drying equipment;

[0028] Figure 6 It is a structural schematic diagram of the aggregate assembly in a continuous drying equipment for producing high-performance polylactic acid (PLA);

[0029] Figure 7 This is a schematic diagram of the structure of the monitoring component in a continuous drying equipment for the production of high-performance polylactic acid (PLA);

[0030] Figure 8 This is a state diagram of the normal discharge of polylactic acid particles after drying in a high-performance polylactic acid (PLA) continuous drying equipment.

[0031] In the figure:

[0032] 1. Feeding assembly; 101. Drying cylinder shell; 102. Air guide tube; 103. Fixed pipe; 104. Feeding cylinder; 105. Sliding hopper; 106. Hot air blower;

[0033] 2. Transport assembly; 201. First material delivery cylinder; 202. First material pushing thread plate; 203. Second material delivery cylinder; 204. Second material pushing thread plate; 205. Connecting rod; 206. First driving motor;

[0034] 3. Driving assembly; 301. Rotating transport cylinder; 302. Fixed mounting plate; 303. Rotating plate; 304. Gear; 305. Second driving motor; 306. Partition plate; 307. Electric push rod;

[0035] 4. Aggregate assembly; 401. Aggregate plate; 402. Fixed connecting rod; 403. Magnetic block;

[0036] 5. Monitoring component; 501. Air duct; 502. Monitoring tube; 503. Magnetic plug; 504. Thrust spring; 505. Ventilation hole; 506. Sealing sheet; 507. Spring plate; 508. Connecting spring; 509. One-way valve; 510. Humidity sensor; 511. Filter;

[0037] 6. Material guide assembly; 601. Material guide trough; 602. Material guide arc plate; 603. Material guide outer cylinder; 604. Material discharge pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figures 1 to 5 In an embodiment of the present invention, a high-performance continuous drying device for producing polylactic acid (PLA) includes a feed assembly 1, which includes a drying cylinder shell 101. The upper side wall of the drying cylinder shell 101 is provided with an opening for discharging gas and a feed port for feeding material. The feed port is connected to a material guide groove 601. The left side wall of the drying cylinder shell 101 is fixedly connected to an air guide cylinder 102 by welding. A fixed pipe 103 is inserted and fixed in the air guide cylinder 102. A feed cylinder 104 is connected and fixed to the upper side wall of the fixed pipe 103. A sealing cover is threadedly connected to the upper end of the feed cylinder 104 to prevent gas from entering the air guide cylinder 102. The body leaks from the feed cylinder 104, and a sliding hopper 105 is fixedly connected between the front and rear inner walls of the fixed tube 103. The sliding hopper 105 is in the shape of an inclined funnel. The end of the sliding hopper 105 close to the transport component 2 is tubular, and in order to avoid the sliding hopper 105 blocking the wind, the sliding hopper 105 is set to a screen structure. One end of the fixed tube 103 is connected and fixed with a hot air blower 106, and the end of the sliding hopper 105 away from the hot air blower 106 is rotatably connected to the transport component 2 for feeding the material through a bearing. The upper side wall of the left end of the drying cylinder shell 101 is fixedly connected to the driving component 3 for driving the drying material back.

[0040] The driving assembly 3 includes a rotating transport cylinder 301 fixedly connected to the side wall of the drying cylinder shell 101, the left side wall of the rotating transport cylinder 301 is closed, and the right side wall is an open structure, the upper side wall of the rotating transport cylinder 301 is fixedly connected to a fixed mounting plate 302, the left inner wall of the rotating transport cylinder 301 is rotatably connected to a rotating plate 303 by a sliding groove clamping method, and the side wall of the rotating plate 303 is fixedly connected with a tooth surface, and the fixed mounting plate 302 is rotatably connected with a gear 304 that meshes with the tooth surface of the rotating plate 303. In order to enable the rotating plate 303 to mesh with the gear 304, a matching opening needs to be opened on the upper side wall of the rotating transport cylinder 301, and the fixed mounting plate 302 is provided with a plurality of screwdrivers. A second drive motor 305 is fixedly connected to the side wall of the mounting plate 302 away from the gear 304 by bolts, and the output end of the second drive motor 305 is fixedly connected to the center of the gear 304, a plurality of evenly distributed partitions 306 are fixedly connected to the side wall of the rotating plate 303, and a collection assembly 4 is arranged between every two partitions 306, an electric push rod 307 is fixedly connected between the left inner wall of the rotating transport cylinder 301 and the collection plate 401 in the collection assembly 4, a monitoring assembly 5 for detecting the humidity of the discharged material is fixedly connected to the lower side wall of the rotating transport cylinder 301, and a material guide assembly 6 for guiding the conveying direction of the polylactic acid particles is fixedly connected to the drying cylinder shell 101.

[0041] The transport component 2 includes a first feed cylinder 201 rotatably connected to the sliding hopper 105, the inner wall of the first feed cylinder 201 is fixedly connected with a spirally distributed first push thread plate 202 by welding, the right inner wall of the drying cylinder shell 101 is rotatably connected with a second feed cylinder 203, the inner wall of the second feed cylinder 203 is fixedly connected with a spirally distributed second push thread plate 204 by welding, the first push thread plate 202 and the second push thread plate 204 rotate and tilt in opposite directions, a plurality of connecting rods 205 are fixedly connected between the right end of the first feed cylinder 201 and the right inner wall of the second feed cylinder 203, a first drive motor 206 is fixedly connected to the right end side wall of the drying cylinder shell 101 by bolts, and the output end of the first drive motor 206 is fixedly connected to the second feed cylinder 203, the staff puts polylactic acid particles from the feed cylinder 104, The polylactic acid is allowed to slide into the first feed barrel 201 through the sliding hopper 105, and then the first drive motor 206 is started. The first drive motor 206 drives the first feed barrel 201 and the second feed barrel 203 to rotate together, so that the polylactic acid particles are gradually pushed by the first pushing threaded plate 202 under the action of gravity. At the same time, the hot air blower 106 can effectively dry the polylactic acid particles. An air outlet is drilled on the lower side wall of the air guide cylinder 102, so that the hot air generated by the hot air blower 106 is mostly discharged from the bottom of the air guide cylinder 102, so that the hot air can better dry the polylactic acid particles. When the polylactic acid particles are pushed to the port of the first feed barrel 201, they fall into the second feed barrel 203, and then cooperate with the second pushing threaded plate 204 in the second feed barrel 203 to push the polylactic acid particles to move again, so that the polylactic acid particles finally slide into the collection assembly 4 through the material guide assembly 6.

[0042] Example 2: Please refer to Figures 5 to 8Based on Example 1, the collection component 4 includes two collection plates 401, the collection plates 401 are arranged in an arc shape, and the lower side wall of the collection plate 401 is in contact with the inner side wall of the rotating transport cylinder 301, and the left and right side walls of the collection plate 401 are in contact with the partition 306, so that the polylactic acid particles can be prevented from leaking. Three fixed connecting rods 402 are fixedly connected between the two collection plates 401, and a magnetic block 403 is fixedly connected at the center of one of the fixed connecting rods 402. The polylactic acid particles slide between the two collection plates 401 through the guide arc plate 602. The monitoring component 5 includes an air duct 501 connected to and fixed on the lower side wall of the collection plate 401, and the lower end of the air duct 501 is connected to and fixed with a monitoring cylinder 502. The monitoring cylinder 502 A magnetic plug 503 is slidably connected inside and magnetically repels the magnetic block 403. A thrust spring 504 is fixedly connected between the magnetic plug 503 and the inner wall of the lower side of the monitoring tube 502. A ventilation hole 505 is drilled at the center of the magnetic plug 503. A sealing sheet 506 that fits the lower end of the ventilation hole 505 is arranged on the lower side of the magnetic plug 503. A spring plate 507 is fixedly connected inside the ventilation hole 505. A connecting spring 508 is fixedly connected between the spring plate 507 and the sealing sheet 506. The sealing sheet 506 is offset from the magnetic plug 503 by the pulling force of the connecting spring 508. A one-way valve 509 and a humidity sensor 510 are fixedly connected inside the air duct 501, and the humidity sensor 510 is electrically connected to the electric push rod 307. A filter screen 511 is fixedly connected to the upper end of the tube 501. Under the magnetic repulsion of the magnetic block 403, the magnetic plug 503 is pushed downward, so that the magnetic plug 503 draws the air between the two collecting plates 401. The humidity of the air can be monitored by the humidity sensor 510. When the microprocessor detects through the humidity sensor 510 that the air humidity around the polylactic acid particles meets the preset value, the electric push rod 307 will be started to push the collecting plate 401, and the polylactic acid particles will be pushed out by the collecting plate 401, so that the polylactic acid particles can be discharged through the material guide outer cylinder 603. When the microprocessor detects through the humidity sensor 510 that the air humidity around the polylactic acid particles exceeds the preset value, the start of this will be suspended. The electric push rod 307 related to the collecting plate 401 causes the second driving motor 305 to rotate by driving the rotating plate 303 through the gear 304, and the rotating plate 303 drives the collecting assembly 4 to move upward through the partition 306. When the collecting assembly 4 moves to the top, the polylactic acid particles between the two collecting plates 401 will be re-discharged into the first feeding cylinder 201 through the guide trough 601 for secondary drying. The material guiding assembly 6 includes a material guiding trough 601 fixedly connected between the drying cylinder shell 101 and the fixed tube 103, the lower inner wall of the drying cylinder shell 101 is fixedly connected to a material guiding arc plate 602, the lower side wall of the drying cylinder shell 101 is fixedly connected to a material guiding outer cylinder 603, and the lower side wall of the material guiding outer cylinder 603 is connected to a discharge pipe 604.

[0043] The working principle of the present invention is:

[0044] When the present invention is used, first, the staff pours the polylactic acid particles into the feed barrel 104, so that the polylactic acid slides into the first feeding barrel 201 through the sliding hopper 105, and then starts the first driving motor 206, which drives the first feeding barrel 201 and the second feeding barrel 203 to rotate together, so that the polylactic acid particles are gradually pushed by the first pushing threaded plate 202 under the action of gravity, and at the same time, the hot air blower 106 can effectively dry the polylactic acid particles. When the polylactic acid particles are pushed to the port of the first feeding barrel 201, The polylactic acid particles fall into the second feeding barrel 203, and then cooperate with the second pushing threaded plate 204 in the second feeding barrel 203 to push the polylactic acid particles to move again, so that the polylactic acid particles slide through the guide arc plate 602 to between the two collecting plates 401 according to the order of feeding, and at the same time start the second driving motor 305, and the second driving motor 305 drives the rotating plate 303 to rotate through the gear 304, so that the rotating plate 303 drives multiple collecting components 4 to rotate through the electric push rod 307, so that the polylactic acid particles can enter different collecting components 4 in batches;

[0045] At the same time, under the magnetic repulsion of the magnetic block 403, the magnetic block 403 can push the magnetic plug 503 downward, so that the magnetic plug 503 draws the air between the two collecting plates 401, and the humidity sensor 510 can be used to monitor the air humidity around the small batch of polylactic acid particles, so as to determine the dryness of the polylactic acid particles. When the microprocessor detects through the humidity sensor 510 that the air humidity around the polylactic acid particles meets the preset value, it will start the electric push rod 307, so that the electric push rod 307 pushes the collecting plate 401, and uses the collecting plate 401 to push the polylactic acid particles out, so that the polylactic acid particles can be discharged through the material guide outer cylinder 603. The state of the polylactic acid particles when discharged is as follows. Figure 8 As shown, when the microprocessor detects through the humidity sensor 510 that the air humidity around the PLA particles exceeds the preset value, it will pause and start the electric push rod 307 related to the collection plate 401, so that the second drive motor 305 drives the rotating plate 303 to rotate through the gear 304, and the rotating plate 303 drives the collection component 4 to move upward through the partition 306. When the collection component 4 moves to the top, the PLA particles that fail the humidity detection between the two collection plates 401 will be re-discharged into the first feed barrel 201 through the guide trough 601 for secondary drying.

[0046] Finally, when the aggregate assembly 4 moves, the magnetic plug 503 is reset under the thrust of the thrust spring 504, and at the same time, the air inside the monitoring tube 502 will prompt the sealing sheet 506 to open and be discharged from the ventilation hole 505, preventing the air detected last time from remaining inside the monitoring tube 502.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-performance polylactic acid (PLA) production continuous drying device, comprising a feed component (1), characterized in that: The feeding assembly (1) comprises a drying cylinder shell (101), the drying cylinder shell (101) is fixedly connected to an air guide cylinder (102), the air guide cylinder (102) is fixedly connected to a fixed pipe (103), the upper side wall of the fixed pipe (103) is connected to a feeding cylinder (104), the fixed pipe (103) is fixedly connected to a sliding hopper (105), one end of the fixed pipe (103) is connected to a hot air blower (106), the end of the sliding hopper (105) away from the hot air blower (106) is rotatably connected to a transport assembly (2), and the drying cylinder shell (101) is fixedly connected to a driving assembly (3); The driving assembly (3) comprises a rotating transport cylinder (301) fixedly connected to a drying cylinder shell (101); a fixed mounting plate (302) is fixedly connected to the upper side wall of the rotating transport cylinder (301); a rotating plate (303) is rotatably connected inside the rotating transport cylinder (301); a gear (304) meshing with the rotating plate (303) is rotatably connected to the fixed mounting plate (302); a second driving motor (305) is fixedly connected to the side wall of the fixed mounting plate (302); an output end of the second driving motor (305) is fixedly connected to the gear (304); and a plurality of evenly distributed partitions (305) are fixedly connected to the side wall of the rotating plate (303). 06), a material collection assembly (4) is provided between each two of the partitions (306), an electric push rod (307) is fixedly connected between the rotating transport cylinder (301) and the material collection assembly (4), a monitoring assembly (5) is fixedly connected to the lower side wall of the rotating transport cylinder (301), a material guide assembly (6) is fixedly connected to the drying cylinder shell (101), the material collection assembly (4) comprises two material collection plates (401), a plurality of fixed connecting rods (402) are fixedly connected between the two material collection plates (401), one of the fixed connecting rods (402) is fixedly connected to a magnetic block (403), the monitoring assembly (5) comprises a magnetic block (403) fixed to the lower side wall of the material collection plate (401), and a magnetic block (403) is fixedly connected to the magnetic block (403). The air duct (501) is configured to be arc-shaped, and the lower side wall of the material collecting plate (401) is in contact with the inner side wall of the rotating transport cylinder (301), and the left and right side walls of the material collecting plate (401) are in contact with the partition plate (306). The lower end of the air duct (501) is connected to a monitoring cylinder (502), and a magnetic plug (503) magnetically connected to the magnetic block (403) is slidably connected inside the monitoring cylinder (502). A thrust spring (504) is fixedly connected between the magnetic plug (503) and the lower inner wall of the monitoring cylinder (502). A ventilation hole (505) is drilled at the center of the magnetic plug (503), and a sealing sheet (506) is provided on the lower side of the magnetic plug (503). ), a spring plate (507) is fixedly connected inside the ventilation hole (505), a connecting spring (508) is fixedly connected between the spring plate (507) and the sealing plate (506), a one-way valve (509) and a humidity sensor (510) are fixedly connected inside the air duct (501), and the humidity sensor (510) is electrically connected to the electric push rod (307), a filter screen (511) is fixedly connected to the upper end of the air duct (501), and the material guide assembly (6) includes a material guide groove (601) fixedly connected between the drying cylinder shell (101) and the fixed tube (103), and a material guide arc plate (602) is fixedly connected to the lower inner wall of the drying cylinder shell (101).

2. A high-performance polylactic acid (PLA) production continuous drying equipment according to claim 1, characterized in that: The transport assembly (2) comprises a first material conveying cylinder (201), the inner side wall of which is fixedly connected to a first material pushing threaded plate (202), and the interior of the drying cylinder shell (101) is rotatably connected to a second material conveying cylinder (203), the inner side wall of which is fixedly connected to a second material pushing threaded plate (204).

3. A high-performance polylactic acid (PLA) production continuous drying equipment according to claim 2, characterized in that: A plurality of connecting rods (205) are fixedly connected between the first feeding cylinder (201) and the second feeding cylinder (203), a first driving motor (206) is fixedly connected to the side wall of the drying cylinder shell (101), and an output end of the first driving motor (206) is fixedly connected to the second feeding cylinder (203).

4. A high-performance polylactic acid (PLA) production continuous drying equipment according to claim 1, characterized in that: The lower side wall of the drying cylinder shell (101) is fixedly connected to a material guiding outer cylinder (603), and the lower side wall of the material guiding outer cylinder (603) is connected to a material discharge pipe (604).

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