Recycled Polyester Homogenization and Thickening Reactor and Homogenization and Thickening Process

Abstract

This invention relates to a homogenization and thickening reactor for recycled polyester and a homogenization and thickening process. The reactor includes a vessel body, an upper lid, a lower bottom, and a motor. It also includes a scraper, a telescopic component, a lifting component, a movable shaft, a rotating shaft, an arc-shaped scraper ring, and a limiting component. A bearing is rotatably connected to a sleeve of the telescopic rod. An eccentric sleeve is fixedly connected to the bottom of the bearing. A movable plate slidably engages with the scraper and is rotatably connected to the eccentric sleeve. The end of the movable plate has a sleeve that engages with the rotating shaft. The reciprocating sleeve drives the rotating shaft to rotate via the movable component. This invention, through the telescopic component and the hinged plate, allows the scraper and arc-shaped scraper ring to move axially in segments and at intervals, enabling layer-by-layer stirring of the reactants from the top to the bottom of the reactor, ultimately reaching and adhering to the inner wall of the lower bottom. This solves the problem of uneven stirring of materials in the middle and bottom sections by traditional fixed-height stirring devices, improving the uniformity and reaction efficiency of the entire reaction system.

Description

Technical Field

[0001] This invention relates to the field of reaction vessel technology, specifically to a homogenization and thickening reaction vessel for recycled polyester and a homogenization and thickening process. Background Technology

[0002] Existing recycled polyester homogenization and thickening reactors typically employ a fixed-height agitator and scraper ring during operation. This prevents continuous, uniform, layer-by-layer agitation and thorough scraping based on reaction progress and material position. Consequently, reactants at different liquid levels and at the bottom are not adequately agitated, leading to material adhesion and sedimentation on the inner and bottom walls. This not only affects homogenization and polymerization efficiency but also increases the difficulty of reactor cleaning and maintenance costs.

[0003] Therefore, a homogenization and thickening reactor for recycled polyester and a homogenization and thickening process are proposed to address the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a homogenization and thickening reactor for recycled polyester and a homogenization and thickening process.

[0005] The objective of this invention is achieved through the following technical solution: The recycled polyester homogenization and thickening reactor includes a reactor body, an upper reactor cover, a lower reactor bottom, and a motor. The output shaft of the motor is fixedly connected to a scraper via a telescopic rod. A telescopic component is fixedly connected to the upper reactor cover. The telescopic end of the telescopic component is connected to the telescopic rod via a lifting component. It also includes an inclined movable shaft, with a self-rotating shaft rotatably connected to both ends of the movable shaft and connected to the scraper, and an arc-shaped scraper ring fixedly connected to the middle of the movable shaft to cooperate with the bottom of the lower vessel. The arc-shaped scraper ring is perpendicularly connected to the movable shaft, and a limiting component is provided in the middle of the movable shaft and the scraper. The bearing is rotatably connected to the sleeve of the telescopic rod. An eccentric sleeve is fixedly connected to the bottom of the bearing. A movable plate that is slidably connected to the eccentric sleeve is rotatably connected to the scraper. The end of the movable plate is provided with a sleeve that is sleeved with the self-rotating shaft. The reciprocating sleeve drives the self-rotating shaft to rotate through the movable part.

[0006] As a further description of the above technical solution: The scraper is U-shaped, with both sides of the scraper working in conjunction with the inner wall of the vessel. The motor is fixedly connected to the upper vessel cover, emphasizing the shape and function of the scraper.

[0007] As a further description of the above technical solution: The inner wall of the sleeve of the telescopic rod has a limiting groove, and the sleeve of the telescopic rod is fixedly connected to a limiting plate that slides with the limiting groove. The scraper is fixedly connected to the sleeve of the telescopic rod, and the sleeve of the telescopic rod is fixedly connected to the output shaft of the motor. The telescopic rod achieves extension and synchronous rotation through the limiting groove and the limiting plate.

[0008] As a further description of the above technical solution: The lifting component includes a hinge plate, with both ends of the hinge plate hinged to the outer surface of the bearing and the telescopic end of the telescopic component, respectively. The lifting is achieved by connecting the telescopic component and the bearing of the eccentric transmission structure through the hinge plate.

[0009] As a further description of the above technical solution: The movable plate is fixedly connected to a limiting ring that is rotatably connected to the eccentric sleeve. A sliding groove is provided at the end of the movable plate, and a movable groove is provided on the scraper. A translation rod passing through the movable groove and the sliding groove is fixedly connected to the sleeve, so that the translation rod moves along the scraper.

[0010] As a further description of the above technical solution: The limiting component includes a limiting rod fixedly connected to the movable shaft, an arc-shaped plate fixedly connected to the scraper for the limiting rod to move, and an inclined plate fixedly connected to the end of the rotating shaft for rotational connection with the movable shaft, thereby constraining the movement trajectory of the movable shaft.

[0011] As a further description of the above technical solution: The movable component includes a sliding column fixedly connected to the inner wall of the sleeve, and an elliptical groove with an inclined distribution on the rotating shaft. The sliding column slides in the elliptical groove, thereby realizing the reciprocating motion of the sleeve and driving the rotating shaft to rotate.

[0012] The homogenization and thickening process of the recycled polyester homogenization and thickening reactor adopts the above-mentioned recycled polyester homogenization and thickening reactor, and the specific method includes the following steps; S1. By activating the telescopic component, the scraper and the arc-shaped scraper ring move downwards intermittently and in segments from top to bottom; S2. The motor drives the U-shaped scraper to rotate continuously through the telescopic rod. Its two sides are always in contact with the inner wall of the vessel to scrape and prevent materials from sticking together and promote the mixing of materials near the wall. The arc-shaped scraper ring, through the eccentric sleeve, movable plate, sleeve, sliding column and elliptical groove, causes the arc-shaped scraper ring to reciprocate at a certain angle while revolving with the scraper, which enhances the shearing and mixing effect on the material. S3. While keeping the motor running and continuing the above-mentioned compound stirring, the arc-shaped scraper ring is finally made to fit against the inner wall of the lower bottom of the kettle. The bottom of the U-shaped scraper corresponds to the bottom of the vessel body. Continue to rotate and scrape the side wall and bottom edge. The arc-shaped scraper completely fits the inner wall of the bottom of the vessel, which strongly scrapes and stirs the material, ensuring no dead corners and preventing sedimentation and sticking to the wall. Continue stirring in this state for a period of time to ensure that the material is fully homogenized and the thickening reaction is completed.

[0013] S4. After the reaction is complete, stop the motor, control the telescopic components to retract, and lift and retract the scraper and arc-shaped scraper ring to the top of the reactor. Using lifting equipment to open the upper lid of the reactor facilitates thorough cleaning of the interior of the reactor, as well as inspection, maintenance, or replacement of parts.

[0014] Compared with the prior art, the advantages of the present invention are as follows: 1. The telescopic components and hinge plates enable the scraper and arc-shaped scraper ring to move downwards in segments and at intervals along the axial direction, allowing them to stir the reactants layer by layer from the top to the bottom of the vessel, eventually reaching and adhering to the inner wall of the bottom of the vessel. This solves the problem of uneven stirring of materials in the middle and bottom parts by traditional fixed-height stirring devices, and improves the uniformity and reaction efficiency of the entire reaction system.

[0015] 2. The U-shaped scraper rotates continuously with the extension rod and motor drive, constantly scraping the inner wall of the vessel. The movable arc-shaped scraper ring not only rotates on its own axis, but also swings back and forth at a certain angle relative to the scraper under the drive of the movable shaft, the rotating shaft, and the reciprocating sleeve. Finally, when it reaches the bottom, it fits against the inner wall of the lower vessel bottom. This composite motion enhances the scraping ability and significantly reduces the adhesion and scaling of materials on the inner and bottom walls of the vessel, ensuring the stirring effect and facilitating subsequent cleaning and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the vessel body and the upper vessel cover of the present invention; Figure 4 This is a schematic diagram of the cooperative structure of the scraper and the arc-shaped scraper ring of the present invention; Figure 5 This is a front view schematic diagram of the cooperative structure of the scraper, arc-shaped scraper ring and telescopic rod of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the movable plate and the telescopic rod of the present invention; Figure 7 This is a schematic diagram of the cooperation structure between the eccentric sleeve, bearing, telescopic rod, and limiting ring of the present invention; Figure 8 This is a schematic diagram showing the disassembled structure of the eccentric sleeve, the limiting ring, and the telescopic rod of the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the movable shaft and the inclined plate of the present invention; Figure 10 This is a schematic diagram of the disassembled structure of the movable component of the present invention.

[0017] Labeling Explanation: 1. Cauldron body; 2. Upper cauldron cover; 3. Lower cauldron bottom; 4. Motor; 5. Scraper; 6. Telescopic component; 7. Movable shaft; 8. Rotation shaft; 9. Arc-shaped scraper ring; 10. Bearing; 11. Eccentric sleeve; 12. Movable plate; 13. Sleeve; 14. Limiting plate; 15. Hinge plate; 16. Limiting ring; 17. Sliding groove; 18. Movable groove; 19. Translation rod; 20. Limiting rod; 21. Arc-shaped plate; 22. Inclined plate; 23. Sliding column; 24. Elliptical groove; 25. Telescopic rod. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1-10 The figure shows a schematic diagram of an embodiment of the recycled polyester homogenization and thickening reactor provided by the present invention. The reactor body 1, the upper reactor cover 2, the lower reactor bottom 3, and the motor 4 are included. The output shaft of the motor 4 is fixedly connected to a scraper 5 via a telescopic rod 25. A telescopic component 6 (preferably an electric telescopic cylinder structure) is fixedly connected to the upper reactor cover 2. The telescopic end of the telescopic component 6 is connected to the telescopic rod 25 via a lifting component.

[0019] It also includes an inclined movable shaft 7, with a self-rotating shaft 8 rotatably connected to both ends of the movable shaft 7 and rotatably connected to the scraper 5. An arc-shaped scraper ring 9 that cooperates with the lower bottom 3 is fixedly connected to the middle of the movable shaft 7. The arc-shaped scraper ring 9 is perpendicularly connected to the movable shaft 7. A limiting component is provided in the middle of the movable shaft 7 and the scraper 5.

[0020] A bearing 10 is rotatably connected to the sleeve of the telescopic rod 25. An eccentric sleeve 11 is fixedly connected to the bottom of the bearing 10 (the central axis of the eccentric sleeve 11 does not coincide with the central axis of the telescopic rod 25, that is, the sleeve of the telescopic rod 25 moves through the eccentric sleeve 11). A movable plate 12 is slidably fitted on the scraper 5 and rotatably connected to the eccentric sleeve 11. The end of the movable plate 12 is provided with a sleeve 13 that is sleeved with the self-rotating shaft 8. The reciprocating sleeve 13 drives the self-rotating shaft 8 to rotate through the movable part. A limiting plate is fixedly connected to the sleeve of the telescopic rod 25. The limiting plate presses against the bearing 10, so that the bearing 10 and the eccentric sleeve 11 move in their original positions (at a fixed height) on the sleeve of the telescopic rod 25.

[0021] The homogenization and thickening process of the recycled polyester homogenization and thickening reactor, using the aforementioned recycled polyester homogenization and thickening reactor, specifically includes the following steps: S1. By activating the telescopic component 6, the scraper 5 and the arc-shaped scraper ring 9 move downward intermittently and in segments from top to bottom.

[0022] S2. Motor 4 drives U-shaped scraper 5 to rotate continuously via telescopic rod 25. Its two sides are always in contact with the inner wall of the vessel body 1 to prevent material from sticking and promote the mixing of materials near the wall. The arc-shaped scraper ring 9, through the eccentric sleeve 11, movable plate 12, sleeve 13, sliding column 23 and elliptical groove 24, causes the arc-shaped scraper ring 9 to reciprocate at a certain angle while rotating with the scraper 5, thereby enhancing the shearing and mixing effect on the material.

[0023] S3. While keeping the motor 4 running and continuing the above-mentioned compound stirring, the arc-shaped scraper ring 9 is finally made to fit against the inner wall of the lower bottom of the kettle 3. The bottom end of the U-shaped scraper 5 corresponds to the bottom of the vessel body 1. It continues to rotate and scrape the side wall and bottom edge. The arc-shaped scraper ring 9 completely fits the inner wall of the bottom of the vessel 3, which strongly scrapes and stirs the material, ensuring no dead corners and preventing sedimentation and sticking to the wall. Continue stirring in this state for a period of time to ensure that the material is fully homogenized and the thickening reaction is completed.

[0024] S4. After the reaction is complete, stop motor 4, control telescopic component 6 to retract, and lift scraper 5 and arc-shaped scraper ring 9 back to the top of the reactor.

[0025] Using lifting equipment to open the upper vessel cover 2 facilitates thorough cleaning of the inside of the reactor, as well as inspection, maintenance, or replacement of components.

[0026] This application uses a lifting component to slowly and intermittently adjust the height of the scraper 5 and the arc-shaped scraper ring 9 downwards, thereby gradually stirring the reactants in the reactor from high to low.

[0027] Finally, the arc-shaped scraper ring 9 fits into the lower bottom of the vessel 3, ensuring both uniform mixing and scraping of the inner walls of the vessel body 1 and the lower bottom of the vessel 3.

[0028] The scraper 5 is U-shaped, and its two sides are in contact with the inner wall of the vessel body 1 for scraping. The motor 4 is fixedly connected to the upper vessel cover 2. When the upper vessel cover 2 is lifted and opened by external lifting equipment and moved away from the vessel body 1, the scraper 5 and the arc-shaped scraper ring 9 can be separated from the vessel body 1 for easy maintenance and replacement.

[0029] The inner wall of the sleeve of the telescopic rod 25 is provided with a limiting groove. The sleeve of the telescopic rod 25 is fixedly connected to a limiting plate 14 that slides with the limiting groove. The scraper 5 is fixedly connected to the sleeve of the telescopic rod 25. The sleeve of the telescopic rod 25 is fixedly connected to the output shaft of the motor 4. Through the action of the limiting groove and the limiting plate 14, the sleeve and the sleeve of the telescopic rod 25 can slide relative to each other while rotating synchronously.

[0030] The lifting component includes a hinge plate 15, with both ends of the hinge plate 15 hinged to the outer surface of the bearing 10 and the telescopic end of the telescopic component 6, respectively. By tilting the hinge plate 15, the sleeve of the telescopic rod 25 moves along the sleeve rod without affecting the synchronous rotation of the sleeve and the sleeve rod.

[0031] The movable plate 12 is fixedly connected to a limiting ring 16 that is rotatably connected to the eccentric sleeve 11. The movable plate 12 has a sliding groove 17 at its end, and the scraper 5 has a movable groove 18. The sleeve 13 is fixedly connected to a translation rod 19 that passes through the movable groove 18 and the sliding groove 17. The end of the movable plate 12 moves in a circular motion relative to the scraper 5. Through the action of the sliding groove 17, the translation rod 19 is driven to move back and forth along the movable groove 18. The translation rod 19 will not move in a direction perpendicular to the movable groove 18 (the translation rod 19 moves back and forth relative to the sliding groove 17).

[0032] The limiting component includes a limiting rod 20 fixedly connected to the movable shaft 7, an arc-shaped plate 21 for the limiting rod 20 to move on the scraper 5, and an inclined plate 22 fixedly connected to the end of the rotating shaft 8 and rotatably connected to the movable shaft 7. The limiting rod 20 will never detach from the arc-shaped plate 21.

[0033] The movable component includes a sliding column 23 fixedly connected to the inner wall of the sleeve 13, and an elliptical groove 24 with an inclined distribution on the rotating shaft 8. The sliding column 23 slides in the elliptical groove 24, and the rotating shaft 8 rotates on the scraper 5 at its original position through the action of the sliding column 23.

[0034] Working principle: When motor 4 is not started, the arc-shaped scraper ring 9 and scraper 5 are at the top of the vessel body 1, and the hinge plate 15 is in a horizontal state. When stirring is required: First, the telescopic end of the telescopic component 6 extends, thereby causing the hinge plate 15 to gradually tilt, which in turn drives the bearing 10 to move downward, and drives the sleeve of the telescopic rod 25 to move downward along the sleeve rod, thereby causing the scraper 5 and the arc-shaped scraper ring 9 to move downward synchronously, until the arc-shaped scraper ring 9 is in the middle of the vessel body 1.

[0035] Restart motor 4. Motor 4 drives the sleeve of telescopic rod 25 to rotate. Under the action of limiting groove and limiting plate 14, the sleeve rotates synchronously (without affecting the sliding of the sleeve on the sleeve). This causes scraper 5 to rotate and scrape and clean the inner wall of the reactor body 1, preventing reactants from sticking to the inner wall, which would be inconvenient to clean and affect the stirring efficiency.

[0036] Under the action of the hinge plate 15, the eccentric sleeve 11 will not rotate horizontally, while the scraper 5 and the movable plate 12 rotate horizontally, thereby causing the limiting ring 16 to rotate. Since the central axis of the eccentric sleeve 11 does not coincide with the central axis of the telescopic rod 25, the movable plate 12 moves back and forth relative to the scraper 5. Under the action of the sliding groove 17 and the movable groove 18, the two translation rods 19 move back and forth along the scraper 5, thereby driving the sleeve 13 to move back and forth along the fixed distance of the rotation axis 8.

[0037] The reciprocating sleeve 13 drives the sliding column 23 to reciprocate along the direction of the scraper 5. The sliding column 23 acts on the inclined elliptical groove 24, thereby causing the rotation shaft 8 to rotate relative to the sleeve 13 and the scraper 5.

[0038] The rotating shaft 8 rotates relative to the scraper 5, thereby driving the inclined plate 22 to rotate. The inner end of the inclined plate 22 makes a circular motion. The limiting rod 20 is restricted by the arc plate 21, so that the outer end of the movable shaft 7 makes a circular motion, and the middle part of the movable shaft 7 is kept in this position for adaptive adjustment.

[0039] This causes the arc-shaped scraper ring 9 to reciprocate at a certain angle relative to the scraper 5. That is, the arc-shaped scraper ring 9 rotates with the scraper 5 and reciprocates relative to the scraper 5, thereby uniformly stirring the reactants.

[0040] Next, ensure the continuous rotation of motor 4, and intermittently activate telescopic component 6 to adjust the height of scraper 5 and arc-shaped scraper ring 9, gradually stirring the reactants in the middle of the vessel body 1 and the lower vessel bottom 3.

[0041] When the height of the arc-shaped scraper ring 9 is adjusted to fit against the inner wall of the lower bottom 3, and the bottom end of the scraper 5 corresponds to the bottom position of the vessel body 1, the movable scraper 5 and the arc-shaped scraper ring 9 scrape the inner walls of the vessel body 1 and the lower bottom 3 respectively.

[0042] That is, the scraper 5 always scrapes and stirs the inner wall of the vessel body 1; while the arc-shaped scraper ring 9 first stirs the reactants in the middle of the vessel body 1, then stirs the reactants in the middle of the lower vessel bottom 3, and finally scrapes and stirs the inside of the lower vessel bottom 3.

[0043] Finally, stop the motor 4 and retract the telescopic component 6, so that the scraper 5 and the arc-shaped scraper ring 9 are retrieved to the upper lid 2. Then, use the lifting equipment to open the upper lid 2, and move the scraper 5 and the arc-shaped scraper ring 9 away from the vessel body 1, so as to facilitate cleaning the vessel body 1 and maintenance of the scraper 5 and the arc-shaped scraper ring 9.

Claims

1. A recycled polyester homogenization and thickening reactor, comprising: The vessel body (1), upper vessel cover (2), lower vessel bottom (3) and motor (4) are characterized in that: the output shaft of the motor (4) is fixedly connected to a scraper (5) via a telescopic rod (25), and a telescopic component (6) is fixedly connected to the upper vessel cover (2). The telescopic end of the telescopic component (6) is connected to the telescopic rod (25) via a lifting component. It also includes an inclined movable shaft (7), with a rotating shaft (8) rotatably connected to both ends of the movable shaft (7) and a rotating shaft (8) rotatably connected to the scraper (5). An arc-shaped scraper ring (9) that cooperates with the bottom of the lower vessel (3) is fixedly connected to the middle of the movable shaft (7). The arc-shaped scraper ring (9) is vertically connected to the movable shaft (7). A limiting component is provided in the middle of the movable shaft (7) and the scraper (5). The bearing (10) is rotatably connected to the sleeve of the telescopic rod (25). An eccentric sleeve (11) is fixedly connected to the bottom of the bearing (10). A movable plate (12) is rotatably connected to the eccentric sleeve (11) on the scraper (5). A sleeve (13) is provided at the end of the movable plate (12) and sleeved with the self-rotating shaft (8). The reciprocating sleeve (13) drives the self-rotating shaft (8) to rotate through the movable part. The lifting component includes a hinge plate (15), and both ends of the hinge plate (15) are respectively hinged to the outer surface of the bearing (10) and the telescopic end of the telescopic component (6); The limiting component includes a limiting rod (20) that is fixedly connected to the movable shaft (7), an arc plate (21) that allows the limiting rod (20) to move is fixedly connected to the scraper (5), and an inclined plate (22) that is rotatably connected to the end of the rotating shaft (8). The movable component includes a sliding column (23) fixedly connected to the inner wall of the sleeve (13), and an elliptical groove (24) with an inclined distribution on the rotating shaft (8), in which the sliding column (23) slides.

2. The recycled polyester homogenization and thickening reactor according to claim 1, characterized in that: The scraper (5) is U-shaped, and the two sides of the scraper (5) are in cooperation with the inner wall of the vessel body (1) for scraping. The motor (4) is fixedly connected to the upper vessel cover (2).

3. The recycled polyester homogenization and thickening reactor according to claim 1, characterized in that: The inner wall of the sleeve of the telescopic rod (25) is provided with a limiting groove. The sleeve of the telescopic rod (25) is fixedly connected to a limiting plate (14) that slides with the limiting groove. The scraper (5) is fixedly connected to the sleeve of the telescopic rod (25). The sleeve of the telescopic rod (25) is fixedly connected to the output shaft of the motor (4).

4. The recycled polyester homogenization and thickening reactor according to claim 1, characterized in that: The movable plate (12) is fixedly connected to a limiting ring (16) that is rotatably connected to the eccentric sleeve (11). The movable plate (12) has a sliding groove (17) at its end. The scraper (5) has a movable groove (18). The sleeve (13) has a translation rod (19) that passes through the movable groove (18) and the sliding groove (17).

5. The homogenization and thickening process in a recycled polyester homogenization and thickening reactor, characterized in that, The method of using the recycled polyester homogenization and thickening reactor as described in any one of claims 1-4 includes the following steps; S1. By activating the telescopic component (6), the scraper (5) and the arc-shaped scraper ring (9) move downward intermittently and in segments from top to bottom; S2. The motor (4) drives the U-shaped scraper (5) to rotate continuously through the telescopic rod (25). Its two sides are always scraped and cooperated with the inner wall of the vessel body (1) to prevent the material from sticking together and promote the mixing of the material near the wall. The arc-shaped scraper ring (9) passes through the eccentric sleeve (11), the movable plate (12), and the sleeve (13), so that the arc-shaped scraper ring (9) will also generate a certain angle of reciprocating swing while revolving with the scraper (5), which enhances the shearing and mixing effect on the material. S3. While keeping the motor (4) running and continuously performing compound stirring, the arc-shaped scraper (9) is finally made to fit against the inner wall of the bottom of the lower kettle (3); The bottom end of the U-shaped scraper (5) corresponds to the bottom of the vessel body (1). Continue to rotate and scrape the side wall and bottom edge. The arc-shaped scraper (9) completely fits the inner wall of the bottom (3) of the vessel, which strongly scrapes and stirs the material, ensuring no dead corners and preventing sedimentation and sticking to the wall. Continue stirring in this state for a period of time to ensure that the material is fully homogenized and the thickening reaction is completed. S4. After the reaction is completed, stop the motor (4), control the telescopic component (6) to retract, and lift the scraper (5) and the arc-shaped scraper ring (9) back to the top of the reactor.

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