Polymerization reaction kettle

Abstract

The invention provides a polymerization reaction kettle, and belongs to the technical field of reaction kettles.The polymerization reaction kettle comprises a kettle body and a stirring shaft rotationally arranged in the kettle body, the interior of the stirring shaft is hollow, and a sleeve is arranged on the stirring shaft in a sliding mode; the material mixing mechanism comprises a plurality of groups of stirring rods arranged on the stirring shaft, the stirring rods are horizontally arranged, cavities are formed in the stirring rods, and the stirring rods are communicated with the cavities in the stirring shaft to form circulation channels; by arranging the stirring adjusting mechanism, the angle and position of the stirring component can be automatically adjusted according to the material viscosity, and when the material viscosity is increased, the vertical stirring area is automatically increased; meanwhile, the posture of the stirring component is changed through linkage of pressure change of cooling liquid, and the heat exchange area and the stirring range are enlarged. According to the design, the stirring action can sense the real-time state and spatial difference of materials in the kettle, and the problems of mixing dead angles and non-uniform heat transfer caused by a fixed stirring mode of a traditional reaction kettle are solved.

Description

Technical Field

[0001] This invention belongs to the field of reaction vessel technology, and specifically relates to a polymerization reaction vessel. Background Technology

[0002] Polymerization reactors are the core equipment for realizing polymerization reactions. They are pressure vessels equipped with stirring and temperature control devices, providing a controllable reaction environment for monomer polymerization, such as temperature, pressure, and gas environment. By precisely adjusting the reaction conditions, monomer molecules are polymerized into polymer materials according to the design, and these reactors are widely used in chemical engineering, polymer material production, and other fields.

[0003] Chinese patent CN117482877B discloses a polymerization reactor, comprising: a mounting base fixedly installed on the upper end face of the tank; a drive motor fixedly installed on the upper end face of the mounting base; a fixing rod fixedly connected to the inner side of the tank; a swing arm motor fixedly installed on the inner side of the tank; an air inlet fixedly installed on the outer side of the tank; a stirring shaft rotatably connected to the inner side of the tank; a fixing paddle fixedly connected to the outer side of the stirring shaft; an adjusting paddle slidably connected to the outer side of the stirring shaft; and a sliding stirring mechanism disposed on the inner side of the tank. Through this invention, the material is stirred while the adjusting paddle slides up and down to agitate and stir the material, reducing stirring dead zones, improving mixing efficiency, and solving the problem that existing polymerization reactors often have stirring dead zones during material stirring, leading to uneven mixing and affecting stirring efficiency.

[0004] However, the above technical solution still has the following defects. When the polymerization reaction is carried out, the stirring action of the solution is a periodic reciprocating motion, which cannot sense and adapt to the changes in the viscosity and temperature of the material during the reaction process, and cannot adjust its stirring state to match the state of the material during the reaction process. This can easily lead to differences in the state of the material at different positions in the reactor, making it difficult to achieve full mixing of the material, thereby affecting the effect of the polymerization reaction. Summary of the Invention

[0005] The purpose of this invention is to provide a polymerization reactor that solves the problems of fixed stirring action, inability to sense and adapt to changes in the state of materials, and difficulty in dealing with spatial differences in the state of materials inside the reactor, resulting in dead zones in mixing and uneven heat transfer in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polymerization reactor, comprising: a reactor body and a stirring shaft rotatably disposed inside the reactor body, the stirring shaft being hollow inside, and a sleeve being slidably disposed on the stirring shaft; The mixing mechanism includes multiple sets of stirring rods mounted on a stirring shaft. The stirring rods are horizontally positioned and have internal cavities that communicate with the internal cavities of the stirring shaft to form a flow channel. A stirring and adjusting mechanism is set on the mixing mechanism. The stirring and adjusting mechanism is equipped with an adjusting component and a swinging component. A connecting cylinder is rotatably set on the side of the stirring rod away from the stirring shaft. The adjusting component can control the rotation of the connecting cylinder on a fixed axis. An extension cylinder is slidably connected inside the connecting cylinder. The extension cylinder is hollow inside and communicates with the cavity inside the stirring rod. A limit component is set on the extension cylinder. The limit component can control the rotation of the extension cylinder. The swing assembly includes an auxiliary cylinder disposed on one side of the extension cylinder. The auxiliary cylinder is hollow and communicates with the interior of the extension cylinder. A swing column is rotatably disposed on the side of the auxiliary cylinder away from the extension cylinder. A baffle is connected to one side of the swing column. The baffle extends to the outside of the auxiliary cylinder and contacts the outer wall of the auxiliary cylinder.

[0007] Its effect is that by setting a sliding sleeve and an adjustment and swing component linked to the stirring rod, a core structure of a stirring system that can be adaptively adjusted according to the material state is constructed, which solves the problem that the traditional reaction vessel stirring method is fixed and cannot cope with changes in the state of the material and spatial differences inside the vessel.

[0008] A further technical solution of the present invention is that the adjusting component includes a sliding plate slidably disposed on the stirring rod, the sliding plate being sleeved on the outside of the stirring rod, a telescopic rod being rotatably connected to the upper end of the sliding plate near the stirring shaft, the other end of the telescopic rod being rotatably connected to the sleeve, and the telescopic rod having telescopic properties.

[0009] A further technical solution of the present invention is that the connecting cylinder is located on the side of the slide away from the stirring shaft, the connecting cylinder is horizontally arranged and penetrates through both end faces of the stirring rod, both ends of the connecting cylinder extend to the outside of the stirring rod, and two sets of extension rods are rotatably connected to the side of the slide away from the stirring shaft, and the other end of the extension rods is rotatably connected to both end faces of the connecting cylinder respectively.

[0010] A further technical solution of the present invention is that the limiting component includes a limiting tooth disposed on the outside of the extension cylinder and the limiting tooth extends to the outside of the connecting cylinder, an auxiliary tooth that cooperates with the limiting tooth is disposed on one side inside the stirring rod, a first elastic element is connected to the extension cylinder, and the other end of the first elastic element is connected to the connecting cylinder.

[0011] Its effect is that the limiting teeth, auxiliary teeth and the first elastic element form a detachable clutch mechanism, which can automatically switch between a fixed state and an adjustable state according to the stirring resistance during stirring, realizing automatic sensing and response to the viscosity of the material.

[0012] A further technical solution of the present invention is that the auxiliary cylinder is disposed on the side of the stirring rod away from the auxiliary teeth, and the auxiliary cylinder is disposed on the side of the stirring rod opposite to the rotation direction of the stirring shaft. One side of the swing column extends into the interior of the auxiliary cylinder and is rotatably connected to the auxiliary cylinder. A rotating rod is disposed inside the auxiliary cylinder. The rotating rod can slide back and forth along the swing column. A second elastic element is connected to the rotating rod. The other end of the second elastic element is connected to the swing column. The side of the rotating rod away from the swing column has the same size as the cavity inside the auxiliary cylinder. An annular groove is disposed inside the auxiliary cylinder along its axial direction. A sliding column that slides in cooperation with the annular groove is disposed on the rotating rod. When the auxiliary cylinder is in a vertical state and the baffle rotates to its limit position, the side of the baffle can contact the inner wall of the vessel.

[0013] Its effect is that by extending the coolant channel to the swing assembly and designing a rotating rod and sliding column cooperation structure, the baffle angle can be automatically adjusted according to the coolant pressure and can eventually contact the vessel wall, thereby achieving the functions of enhanced stirring, efficient heat exchange and inner wall cleaning.

[0014] A further technical solution of the present invention is that both the first elastic element and the second elastic element are configured as springs.

[0015] A further technical solution of the present invention is that the bottom of the vessel is connected to a liquid inlet pipe, the liquid inlet pipe communicates with the internal cavity of the stirring shaft, a valve is provided on the liquid inlet pipe, and an auxiliary rod is provided at the bottom of the stirring shaft, the auxiliary rod being close to the bottom wall inside the vessel.

[0016] A further technical solution of the present invention is that the vessel body is installed on a support frame, a top cover is provided at the upper end of the vessel body, the top cover can cover the top of the vessel body and seal the inside of the vessel body, a first driving device is provided at the top of the top cover that can control the stirring shaft to rotate on a fixed axis inside the vessel body, and a discharge port is provided at the bottom of the vessel body.

[0017] A further technical solution of the present invention is that an annular plate is connected to the top of the sleeve, the annular plate is rotatably engaged with the lifting plate, the lifting plate can move up and down along the inside of the vessel, and a second driving device is provided on the top of the top cover to control the up and down movement of the lifting plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a stirring adjustment mechanism, can automatically adjust the angle and position of the stirring components according to the viscosity of the material. When the viscosity of the material increases, the vertical stirring area is automatically increased. At the same time, the posture of the stirring components is changed in conjunction with the change of coolant pressure, thereby expanding the heat exchange area and stirring range. This design enables the stirring action to sense the real-time state and spatial differences of the material inside the vessel, avoiding the problems of mixing dead zones and uneven heat transfer caused by the fixed stirring method in traditional reactors.

[0019] 2. The stirring mechanism of this invention allows each stirring unit to operate independently based on the actual viscosity of the material at its location, increasing stirring intensity only in high-viscosity regions and maintaining basic stirring in low-viscosity regions. This structure avoids the energy waste caused by the overall strengthening of traditional stirring, while reducing excessive shearing of low-viscosity materials, thus improving mixing efficiency while also ensuring energy saving and material protection in the reaction process. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the hybrid structure in a specific embodiment of the present invention; Figure 4 This is a partial schematic diagram of the hybrid structure in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the sleeve installation structure in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the stirring and regulating mechanism in a specific embodiment of the present invention; Figure 7 This is a partial cross-sectional view of the stirring and regulating mechanism in a specific embodiment of the present invention; Figure 8 This is a schematic diagram of the mating structure of the connecting cylinder and the extension cylinder in a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the internal structure of the auxiliary cylinder in a specific embodiment of the present invention; Figure 10 This is a schematic diagram of the cooperative structure of the auxiliary cylinder, the swing column, and the rotating rod in a specific embodiment of the present invention.

[0021] In the diagram: 1. Kettle body; 11. Top cover; 12. First drive device; 13. Discharge port; 2. Support frame; 3. Stirring shaft; 4. Mixing mechanism; 41. Stirring rod; 411. Auxiliary tooth; 42. Liquid inlet pipe; 421. Valve; 43. Auxiliary rod; 5. Sleeve; 51. Annular plate; 52. Lifting plate; 53. Second drive device; 6. Stirring adjustment mechanism; 61. Slide plate; 611. Telescopic rod; 612. Extension rod; 62. Connecting cylinder; 63. Extension cylinder; 631. Limiting tooth; 632. First elastic element; 64. Auxiliary cylinder; 641. Annular groove; 65. Swing column; 651. Baffle; 66. Rotating rod; 661. Second elastic element; 662. Sliding column. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-10 The present invention provides the following technical solution: a polymerization reactor, comprising a reactor body 1, a support frame 2, a stirring shaft 3, a mixing mechanism 4, a sleeve 5, and a stirring adjustment mechanism 6.

[0024] The support frame 2 is placed horizontally on the ground, and the vessel body 1 is installed on the support frame 2. The support frame 2 ensures stable support for the vessel body 1. The stirring shaft 3 is rotatably installed inside the vessel body 1. The stirring shaft 3 is hollow inside and can rotate around a fixed axis during operation. The mixing mechanism 4 is installed on the stirring shaft 3. When the stirring shaft 3 rotates, the mixing mechanism 4 can mix and stir the materials in the vessel body 1. The sleeve 5 is slidably installed on the stirring shaft 3 and can move up and down along the stirring shaft 3. The stirring adjustment mechanism 6 is installed on the mixing mechanism 4. The stirring adjustment mechanism 6 can be adjusted according to the changes in the state of the materials after a period of mixing, to adapt to the mixing requirements of materials in different states, and to ensure that the materials are mixed evenly and react fully.

[0025] like Figures 1-2 As shown, a top cover 11 is provided at the upper end of the vessel body 1, which covers the top of the vessel body 1 and seals the interior of the vessel body 1. A first driving device 12 is provided on the top of the top cover 11, and the output end of the first driving device 12 is connected to the stirring shaft 3. The first driving device 12 can control the stirring shaft 3 to rotate on a fixed axis inside the vessel body 1. A discharge port 13 is provided at the bottom of the vessel body 1, and the material inside the vessel body 1 can be discharged from the discharge port 13 after the polymerization reaction.

[0026] like Figures 2-6As shown, the mixing mechanism 4 includes multiple sets of stirring rods 41 mounted on the stirring shaft 3. The stirring rods 41 are horizontally positioned and have internal cavities, communicating with the internal cavity of the stirring shaft 3 to form a flow channel. A liquid inlet pipe 42 is connected to the bottom of the vessel body 1, communicating with the internal cavity of the stirring shaft 3. A valve 421 is mounted on the liquid inlet pipe 42. When the valve 421 is open, coolant can flow from the liquid inlet pipe 42 into the stirring shaft 3 to cool the material inside the vessel body 1 whose temperature gradually increases due to the polymerization reaction. An auxiliary rod 43 is mounted at the bottom of the stirring shaft 3, close to the bottom wall of the vessel body 1. The rotation of the auxiliary rod 43 can stir the material at the bottom of the vessel body 1, accelerating its mixing. Simultaneously, it assists in the flow of material when it is discharged from the outlet 13, accelerating its discharge.

[0027] A ring plate 51 is connected to the top of the sleeve 5. A lifting plate 52, which rotates and engages with the ring plate 51, is slidably disposed inside the vessel body 1. The ring plate 51 and the lifting plate 52 rotate and engage, and the lifting plate 52 can move up and down along the interior of the vessel body 1. A second driving device 53 is disposed on the top of the top cover 11. The output end of the second driving device 53 is connected to the lifting plate 52. The second driving device 53 can control the up and down movement of the lifting plate 52, and the lifting plate 52 drives the ring plate 51 to move up and down synchronously. During operation, the up and down movement of the lifting plate 52 can control the movement of the ring plate 51, thereby controlling the sleeve 5 to slide up and down along the stirring shaft 3, while avoiding obstructing the fixed-axis rotation of the stirring shaft 3.

[0028] like Figures 4-8 As shown, the stirring and adjusting mechanism 6 is equipped with an adjusting component, which allows for adjustment of the movement state of the stirring and adjusting mechanism 6. The adjusting component includes a sliding plate 61 slidably mounted on the stirring rod 41. The sliding plate 61 is fitted over the stirring rod 41 and can slide back and forth along the stirring rod 41. A telescopic rod 611 is rotatably connected to the upper end of the sliding plate 61 near the stirring shaft 3. The other end of the telescopic rod 611 is rotatably connected to the sleeve 5, and the telescopic rod 611 itself is telescopic. When the sleeve 5 moves downwards, the telescopic rod 611 can drive the sliding plate 61 to slide away from the stirring shaft 3.

[0029] A connecting cylinder 62 is rotatably mounted on the side of the stirring rod 41 away from the stirring shaft 3. The connecting cylinder 62 is located on the side of the slide plate 61 away from the stirring shaft 3, is horizontally positioned, and extends through both end faces of the stirring rod 41, with both ends extending outside the stirring rod 41. Two sets of extension rods 612 are rotatably connected to the side of the slide plate 61 away from the stirring shaft 3, and the other ends of the two sets of extension rods 612 are rotatably connected to the two end faces of the connecting cylinder 62, respectively. During operation, the downward movement of the sleeve 5 causes the slide plate 61 to slide and approach the connecting cylinder 62, while the extension rods 612 simultaneously cause the connecting cylinder 62 to rotate along the fixed axis of the stirring rod 41.

[0030] An extension cylinder 63 is slidably connected inside the connecting cylinder 62. The extension cylinder 63 is hollow and communicates with the cavity inside the stirring rod 41, allowing coolant to flow into the extension cylinder 63 through the flow channel inside the stirring rod 41. A limiting component is provided on the extension cylinder 63 to control its rotation. The limiting component includes a limiting tooth 631 on the outside of the extension cylinder 63, extending to the outside of the connecting cylinder 62. An auxiliary tooth 411, which engages with the limiting tooth 631, is provided on one side inside the stirring rod 41. A first elastic element 632 is connected to the extension cylinder 63, with its other end connected to the connecting cylinder 62. In the initial state, the first elastic element 632 allows the limiting tooth 631 to mesh with the auxiliary tooth 411. In this embodiment, the first elastic element 632 is a spring. Since the connecting cylinder 62 and the extension cylinder 63 are in sliding fit, the extension cylinder 63 is restricted from rotating under the action of the limiting tooth 631 and the auxiliary tooth 411, and the connecting cylinder 62 is also restricted from rotating synchronously.

[0031] When the sleeve 5 moves downward, if the limiting tooth 631 meshes with the auxiliary tooth 411, the connecting cylinder 62 is fixed and its rotation is restricted. Since the telescopic rod 611 itself is telescopic, while the slide plate 61 is fixed, the telescopic rod 611 begins to retract under the downward driving force of the sleeve 5, ensuring that the sleeve 5 can move downward normally.

[0032] like Figures 6-10 As shown, the stirring and regulating mechanism 6 is equipped with a swing assembly, which assists the stirring rod 41 in mixing the materials inside the vessel body 1. The swing assembly includes an auxiliary cylinder 64 disposed on one side of the extension cylinder 63. The auxiliary cylinder 64 is located on the side of the stirring rod 41 away from the auxiliary teeth 411. The auxiliary cylinder 64 is hollow and communicates with the interior of the extension cylinder 63, and is located on the side of the stirring rod 41 opposite to the rotation direction of the stirring shaft 3. A swing column 65 is rotatably disposed on the side of the auxiliary cylinder 64 away from the extension cylinder 63. One side of the swing column 65 extends into the interior of the auxiliary cylinder 64 and can rotate along the axial direction of the auxiliary cylinder 64. A baffle 651 is connected to the other side of the swing column 65. The baffle 651 extends to the outside of the auxiliary cylinder 64 and contacts the outer wall of the auxiliary cylinder 64. The side width of the baffle 651 is greater than the side width of the stirring rod 41, and it can assist the stirring rod 41 in mixing the materials. In the initial state, the auxiliary cylinder 64 is horizontally positioned, and the swing column 65 is located on the side of the auxiliary cylinder 64 closer to the sleeve 5.

[0033] An auxiliary cylinder 64 contains a rotating rod 66, which can reciprocate along a swing column 65. A second elastic element 661 is connected to the rotating rod 66, and the other end of the second elastic element 661 is connected to the swing column 65. The side of the rotating rod 66 away from the swing column 65 is the same size as the cavity inside the auxiliary cylinder 64. In this embodiment, the second elastic element 661 is a spring. An annular groove 641 is provided inside the auxiliary cylinder 64 along its axial direction. A sliding column 662 is provided on the rotating rod 66, which slides in conjunction with the annular groove 641. When the sliding column 662 moves along the annular groove 641 toward the swing column 65, the rotating rod 66 can rotate about a fixed axis and compress the second elastic element 661. Since the rotating rod 66 is slidably connected to the swing column 65, the swing column 65 rotates about a fixed axis synchronously when the rotating rod 66 rotates and approaches the swing column 65. In the initial state, under the action of the second elastic element 661, the rotating rod 66 moves away from the swing column 65, and at this time the baffle 651 is set at a certain angle relative to the horizontal plane under the action of the rotating rod 66.

[0034] When the reactor starts working, the material inside the reactor body 1 is just beginning to react and has a low viscosity. At this time, as the stirring shaft 3 rotates, the stirring rod 41 and the baffle 651 experience low resistance during stirring. The limiting teeth 631 and the auxiliary teeth 411 can maintain a meshing state. At this time, the baffle 651 is set at an angle, and the area for stirring the material in the horizontal direction is small. At this time, the pressure on the first elastic element 632 is small, and it can maintain its initial state. After the material has reacted for a period of time, its viscosity increases and the resistance during stirring increases. The material's fluidity decreases at high viscosity, and the resistance on the baffle 651 during stirring increases. The extension cylinder 63 begins to slide relative to the connecting cylinder 62 and continuously applies pressure to the first elastic element 632. The first elastic element 632 experiences increased force and is compressed. At this point, the limiting tooth 631 disengages from the auxiliary tooth 411. Subsequently, the sleeve 5, driven by the lifting plate 52, begins to slide up and down along the stirring shaft 3. Driven by the adjusting component on the stirring adjustment mechanism 6, the connecting cylinder 62 begins to drive the extension cylinder 63 to rotate on a fixed axis, and the auxiliary cylinder 64 swings downwards reciprocally on the side near the swing column 65. The baffle 651 swings downwards along with it, thereby increasing the stirring area of ​​the baffle 651 in the vertical direction and accelerating the full mixing of the materials. When the swing column 65 swings downwards to its limit position, the auxiliary cylinder 64 remains vertical, and at this time the swing column 65 is located directly below the auxiliary cylinder 64.

[0035] Because the degree of material mixing and reaction varies at different heights inside the vessel 1, the material viscosity is lower at some locations. The limiting tooth 631 at these locations is engaged with the auxiliary tooth 411. When the sleeve 5 slides, it compresses the telescopic rod 611 at these locations, thus avoiding the energy waste caused by the existing stirring structure's synchronous stirring of all locations inside the reactor and the excessive shearing of the upper layer of material that may still be relatively thin. This ensures that the material at different locations inside the vessel 1 can react fully.

[0036] When materials undergo polymerization, their viscosity increases while their thermal conductivity decreases, leading to a rise in temperature. At this point, valve 421 is opened, allowing coolant to enter the stirring shaft 3 through the inlet pipe 42 and then flow through the circulation channel into the stirring rod 41 and auxiliary cylinder 64, accelerating heat exchange and cooling of the material. Simultaneously, as the pressure of the coolant increases, it pushes the rotating rod 66 towards the swing column 65, compressing the second elastic element 661. Under the combined action of the sliding column 662 and the annular groove 641, the baffle 651 begins to rotate and gradually reaches a vertical position. This increases the horizontal mixing area of ​​the baffle 651, accelerating thorough mixing. Furthermore, because coolant can enter the auxiliary cylinder 64, and the baffle 651 contacts the outer wall of the auxiliary cylinder 64, the baffle 651 increases the heat exchange area and accelerates material cooling, preventing excessively high temperatures that could lead to uncontrolled reaction and material denaturation.

[0037] When the material viscosity is low, resulting in low stirring resistance, if it is necessary to adjust the oscillating component in this state, the rotation of the stirring shaft 3 can be accelerated to increase the resistance of all baffles 651 inside the vessel 1 during stirring. At this time, all limit teeth 631 and auxiliary teeth 411 disengage. Then, the oscillating component can be adjusted by adjusting the component to control the angle and position of the oscillating component to adapt to the stirring and mixing requirements of different materials.

[0038] When the material on the inner sidewall of the vessel 1 is highly viscous and the mixing mechanism 4 cannot easily reach this location, the material near the wall surface is almost stationary and forms an insulating layer. Heat cannot be effectively transferred to the vessel wall and dissipated through fluid convection, and the temperature inside the vessel is prone to becoming too high. At this time, the sleeve 5 moves downward to its limit position to keep the auxiliary cylinder 64 vertical, while increasing the pressure of the coolant, causing all baffles 651 to rotate to their limit state, at which point the mixing area of ​​the baffles 651 is at its maximum. Through the size design of the baffles 651, the side of the baffles 651 can contact the inner sidewall of the vessel 1 and scrape off the material on the inner sidewall of the vessel 1, while promoting the flow of material inside the vessel 1 and promoting the flow of material between the inner and outer layers, allowing it to approach the inner sidewall of the vessel 1, accelerating the heat exchange of the material, and promoting the mixing of material while cleaning the inner wall of the vessel 1.

[0039] After the materials are fully mixed, the stirring shaft 3 accelerates while moving the sleeve 5 upward to its limit position. At this point, the stirring adjustment mechanism 6 returns to its initial state, and the auxiliary cylinder 64 remains horizontal. Subsequently, the stirring shaft 3 decelerates and engages the limiting tooth 631 with the auxiliary tooth 411 to fix the oscillating component. Finally, the reacted material is discharged from the outlet 13, ready for the polymerization reaction of the next batch of materials.

Claims

1. A polymerization reactor, comprising: The vessel body (1) and the stirring shaft (3) rotatably disposed inside the vessel body (1), the stirring shaft (3) being hollow inside, characterized in that a sleeve (5) is slidably disposed on the stirring shaft (3). The mixing mechanism (4) includes multiple sets of stirring rods (41) arranged on the stirring shaft (3). The stirring rods (41) are arranged horizontally and have cavities inside, which are connected to the cavities inside the stirring shaft (3) to form a flow channel. A stirring adjustment mechanism (6) is set on the mixing mechanism (4). The stirring adjustment mechanism (6) is equipped with an adjustment component and a swing component. A connecting cylinder (62) is rotatably set on the side of the stirring rod (41) away from the stirring shaft (3). The adjustment component can control the connecting cylinder (62) to rotate on a fixed axis. An extension cylinder (63) is slidably connected inside the connecting cylinder (62). The extension cylinder (63) is hollow inside and communicates with the cavity inside the stirring rod (41). A limit component is set on the extension cylinder (63). The limit component can control the extension cylinder (63) to rotate. The swing assembly includes an auxiliary cylinder (64) disposed on one side of the extension cylinder (63). The auxiliary cylinder (64) is hollow inside and communicates with the inside of the extension cylinder (63). A swing column (65) is rotatably disposed on the side of the auxiliary cylinder (64) away from the extension cylinder (63). A baffle (651) is connected to one side of the swing column (65). The baffle (651) extends to the outside of the auxiliary cylinder (64) and contacts the outer wall of the auxiliary cylinder (64).

2. The polymerization reactor according to claim 1, characterized in that: The adjustment assembly includes a sliding plate (61) that is slidably mounted on the stirring rod (41). The sliding plate (61) is fitted over the outside of the stirring rod (41). A telescopic rod (611) is rotatably connected to the upper end of the sliding plate (61) near the stirring shaft (3). The other end of the telescopic rod (611) is rotatably connected to the sleeve (5). The telescopic rod (611) is telescopic.

3. A polymerization reactor according to claim 2, characterized in that: The connecting cylinder (62) is located on the side of the slide plate (61) away from the stirring shaft (3). The connecting cylinder (62) is horizontally set and passes through both ends of the stirring rod (41). Both ends of the connecting cylinder (62) extend to the outside of the stirring rod (41). Two sets of extension rods (612) are rotatably connected to the side of the slide plate (61) away from the stirring shaft (3). The other ends of the extension rods (612) are rotatably connected to both ends of the connecting cylinder (62).

4. A polymerization reactor according to claim 1, characterized in that: The limiting component includes a limiting tooth (631) disposed on the outside of the extension cylinder (63), and the limiting tooth (631) extends to the outside of the connecting cylinder (62). An auxiliary tooth (411) is provided on one side of the inside of the stirring rod (41) to cooperate with the limiting tooth (631). A first elastic element (632) is connected to the extension cylinder (63), and the other end of the first elastic element (632) is connected to the connecting cylinder (62).

5. A polymerization reactor according to claim 4, characterized in that: The auxiliary cylinder (64) is located on the side of the stirring rod (41) away from the auxiliary teeth (411), and the auxiliary cylinder (64) is located on the side of the stirring rod (41) opposite to the rotation direction of the stirring shaft (3). One side of the swing column (65) extends into the auxiliary cylinder (64) and is rotatably connected to the auxiliary cylinder (64). A rotating rod (66) is provided inside the auxiliary cylinder (64). The rotating rod (66) can slide back and forth along the swing column (65). A second elastic element (661) is connected to the rotating rod (66). The other end of (661) is connected to the swing column (65). The side of the rotating rod (66) away from the swing column (65) is the same size as the cavity inside the auxiliary cylinder (64). The auxiliary cylinder (64) has an annular groove (641) along its axial direction. The rotating rod (66) has a sliding column (662) that slides with the annular groove (641). When the auxiliary cylinder (64) is in a vertical state and the baffle (651) rotates to its limit position, the side of the baffle (651) can contact the inner wall of the vessel body (1).

6. A polymerization reactor according to claim 5, characterized in that: Both the first elastic element (632) and the second elastic element (661) are configured as springs.

7. A polymerization reactor according to claim 1, characterized in that: The bottom of the vessel body (1) is connected to a liquid inlet pipe (42), which is connected to the internal cavity of the stirring shaft (3). A valve (421) is provided on the liquid inlet pipe (42), and an auxiliary rod (43) is provided at the bottom of the stirring shaft (3). The auxiliary rod (43) is close to the bottom wall inside the vessel body (1).

8. A polymerization reactor according to claim 1, characterized in that: The vessel body (1) is mounted on the support frame (2). A top cover (11) is provided at the upper end of the vessel body (1). The top cover (11) can cover the top of the vessel body (1) and seal the inside of the vessel body (1). A first drive device (12) is provided at the top of the top cover (11) to control the stirring shaft (3) to rotate on a fixed axis inside the vessel body (1). A discharge port (13) is provided below the vessel body (1).

9. A polymerization reactor according to claim 8, characterized in that: The top of the sleeve (5) is connected to an annular plate (51), which is rotatably engaged with the lifting plate (52). The lifting plate (52) can move up and down along the inside of the vessel body (1). The top of the top cover (11) is provided with a second driving device (53) that can control the up and down movement of the lifting plate (52).

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