A reaction agitator for uniform particle pyridyl anion resin
Patent Information
- Application Number
- CN202522531215.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-28
AI Technical Summary
[0003]本实用新型的目的在于提供一种均粒吡啶基阴树脂的反应搅拌器，通过设置主轴、螺旋叶、锚式搅拌桨、副轴、斜叶涡轮搅拌桨、刮条、大齿轮、小齿轮、滑块、夹套，解决了单一常规搅拌器无法满足吡啶基阴树脂在分散阶段、聚合反应阶段、后期熟化阶段需要不同的搅拌效果、吡啶基阴树脂聚合反应时的粘度增加，易产生内壁结垢和沉降、以及缺少温控和转速调整功能的问题
本实用新型通过设置主轴、螺旋叶、锚式搅拌桨、副轴、斜叶涡轮搅拌桨，解决了单一常规搅拌器无法满足吡啶基阴树脂在分散阶段、聚合反应阶段、后期熟化阶段需要不同的搅拌效果的问题；首先，先将水相（含分散剂）加入釜中，启动搅拌，再缓慢加入油相（单体、致孔剂、引发剂），此时，大齿轮与小齿轮为啮合状态，电机驱动主轴旋转，主轴上的大齿轮啮合传动小齿轮旋转，且大齿轮内径大于小齿轮内径，形成增速结构，使副轴转速更快，随着副轴的旋转，斜叶涡轮搅拌桨产生强烈的剪切作用，产生强大的轴向流，使搅拌釜内的物料形成主体循环，液体从斜叶涡轮搅拌桨上方吸入，从斜下方以一定角度排出，从而形成一个上下翻腾的循环流场，将油相分散成大小均一的微小液滴；同时副轴并非居中设置，这种安装方式可以打破对称的流场，在釜内产生更复杂、更强烈的湍流，极大地消除了混合死区，使得粒径分布更窄，是生产“均粒”树脂的关键；同时利用锚式搅拌桨工作，配合螺旋叶旋转，将底部的物料“抛起”送入副轴及斜叶涡轮搅拌桨附近的抽吸区，形成完美的整体循环；而在聚合反应阶段，则仅利用锚式搅拌桨和螺旋叶搅拌作业，使副轴脱离，搅拌的目标从“高速分散”转变为“低速维持均匀悬浮和传热”。
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Figure CN224854250U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water treatment technology, and in particular relates to a reaction stirrer for a uniformly sized pyridyl anion resin. Background Technology
[0002] Pyridyl anion resins are a class of functional polymer materials prepared by cross-linking polymerization using vinylpyridine or its derivatives as monomers. Their core characteristic is that the nitrogen atom on the pyridine ring contains a lone pair of electrons, which can act as a coordination center to form complexes with metal ions, or adsorb anionic pollutants through electrostatic interactions, hydrogen bonding, etc. These resins have attracted much attention in the field of environmental remediation due to their good chemical stability, heat resistance, and high selectivity for specific pollutants. Pyridyl anion resins exhibit excellent adsorption selectivity, thermal stability, and complexing ability, and are widely used in wastewater treatment for the removal of pollutants such as metal ions, nitrates, phosphates, and radionuclides. However, the following drawbacks still exist in the actual preparation of pyridyl anion resins: Firstly, the core objective of stirring pyridyl anion exchange resin is to ensure a highly uniform mixture of monomers and porogens throughout the polymerization process, in order to form polymer spheres with uniform particle size and regular pore structure. However, the reaction system of pyridyl anion exchange resin is usually a suspension system of oil phase (monomer, porogen) in aqueous phase (dispersant). The reaction method is usually to first add the aqueous phase (containing dispersant) to the reactor, start stirring, and then slowly add the oil phase (monomer, porogen, initiator). This process requires high shear force to disperse the oil phase into uniformly sized micro-droplets, but the viscosity will increase as the reaction proceeds. High-speed shear stirring is no longer required in the polymerization stage. Therefore, conventional stirrer structures cannot meet the requirements and cannot guarantee the formation of uniformly sized pyridyl anion exchange resin. Secondly, as the polymerization reaction proceeds, the viscosity increases. At this point, high-speed shearing is no longer necessary, but it can easily lead to scaling on the inner wall of the stirred tank and sedimentation at the bottom. Finally, during the polymerization reaction stage and the ripening stage in the later stage of the reaction, it is necessary to maintain a certain reaction temperature, and to keep the particles suspended and the temperature uniform. Otherwise, it is easy to cause mechanical damage to the solid polymer particles that have been formed. Utility Model Content
[0003] The purpose of this invention is to provide a reaction stirrer for uniformly sized pyridyl anion resin. By setting up a main shaft, spiral blades, anchor-type stirring paddle, secondary shaft, inclined blade turbine stirring paddle, scraper, large gear, small gear, slider, and jacket, it solves the problems that a single conventional stirrer cannot meet the different stirring effects required by pyridyl anion resin in the dispersion stage, polymerization reaction stage, and late-stage maturation stage, the problem that the viscosity of pyridyl anion resin increases during the polymerization reaction, easily causing internal wall scaling and sedimentation, and the lack of temperature control and speed adjustment functions.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This invention relates to a reaction stirrer for uniformly sized pyridyl anion resin, comprising a stirring vessel, a jacket, a main shaft, a secondary shaft, and a slider. A partition is fixed to the upper inner part of the stirring vessel. The stirring vessel also contains one main shaft and two secondary shafts. An anchor-type stirring paddle is fixed to the lower outer periphery of the main shaft, and symmetrically distributed L-shaped scrapers are also fixed to the lower outer periphery of the main shaft. The two scrapers and the anchor-type stirring paddle are staggered. A spiral blade is fixed to the middle of the main shaft below the partition. The lower part of the secondary shaft is fixed with multiple sets of inclined turbine impellers that are equidistantly distributed vertically. The main shaft and the partition are rotatably connected through the center. A large gear is fixed on the upper part of the main shaft above the partition, and small gears are fixed on the upper parts of the two auxiliary shafts above the partition. The large gear and the small gear are meshed together.
[0005] Furthermore, a motor is fixed at the center of the top surface of the mixing vessel, and the output shaft of the motor is connected to the top end of the main shaft.
[0006] Furthermore, a jacket is fixed to the lower outer periphery of the mixing vessel, and two vertically distributed pipes are fixed through the periphery of the jacket.
[0007] Furthermore, two symmetrically distributed limiting grooves are provided in the top of the partition and the mixing vessel, and a slider is slidably arranged in each limiting groove. A through groove is provided above and below each limiting groove.
[0008] Furthermore, the upper part of the secondary shaft is rotatably connected to two sliders on the same axis, and the top of the secondary shaft extends out of the mixing vessel. The small gear and the large gear are both located in the cavity between the partition plate and the top surface of the mixing vessel.
[0009] Furthermore, the cross-sectional area of the through groove is smaller than that of the limiting slide groove, and the cross-sectional area of the slider is larger than that of the through groove; the end of the slider near the side wall of the mixing vessel is rotatably connected to an adjusting screw, and the end of the adjusting screw away from the slider is threaded through the mixing vessel, extends out, and is fixed with a handwheel.
[0010] Furthermore, the outer wall of the vertical part of the scraper softly contacts the inner wall of the mixing vessel, and the bottom surface of the horizontal part of the scraper softly contacts the inner bottom surface of the mixing vessel.
[0011] This utility model has the following beneficial effects: This invention solves the problem that a single conventional agitator cannot meet the different stirring effects required by pyridyl anion exchange resins during the dispersion, polymerization, and late-stage maturation stages by setting up a main shaft, spiral blades, anchor-type stirring paddle, secondary shaft, and inclined blade turbine stirring paddle. First, the aqueous phase (containing dispersant) is added to the reactor, and stirring is started. Then, the oil phase (monomer, pore-forming agent, and initiator) is slowly added. At this time, the large and small gears are meshed, and the motor drives the main shaft to rotate. The large gear on the main shaft meshes with and drives the small gear to rotate, and the inner diameter of the large gear is larger than that of the small gear, forming a speed-increasing structure, making the secondary shaft rotate faster. As the secondary shaft rotates, the inclined blade turbine stirring paddle generates a strong shearing effect, producing a powerful axial flow, causing the material in the reactor to form a main circulation. The liquid flows from the inclined blade turbine turbine stirring paddle... The oil phase is drawn in from above by the turbine agitator and discharged at a certain angle from below, creating a turbulent, circulating flow field that disperses the oil phase into uniformly sized droplets. Simultaneously, the secondary shaft is not centrally located; this installation method breaks the symmetrical flow field, generating more complex and intense turbulence within the reactor. This significantly eliminates dead zones in the mixing process, resulting in a narrower particle size distribution, which is crucial for producing uniformly sized resins. Furthermore, the anchor agitator, working in conjunction with the rotating helical blades, "throws" the material from the bottom into the suction zone near the secondary shaft and the inclined turbine agitator, forming a perfect overall circulation. During the polymerization reaction stage, only the anchor agitator and helical blades are used for agitation, detaching the secondary shaft. The agitation objective shifts from "high-speed dispersion" to "low-speed maintenance of uniform suspension and heat transfer."
[0012] This invention solves the problem of increased viscosity during the polymerization reaction of pyridyl anion resin, which easily leads to scaling and sedimentation on the inner wall. As the main shaft rotates, the scraper also rotates. As the viscosity increases, the scraper scrapes off the material on the inner wall and bottom surface of the mixing tank, preventing scaling on the wall and sedimentation at the bottom.
[0013] This invention solves the problem of lacking temperature control and speed adjustment functions by setting up a large gear, a small gear, a slider, and a jacket. During the polymerization reaction stage and the later maturation stage, rotating the adjusting screw moves the slider, causing the large gear and small gear to disengage, and the secondary shaft stops rotating. Because a strong shearing effect is not required during the polymerization reaction stage and the later maturation stage, the inclined blade turbine agitator stops working at this time. The speed of the main shaft can also be controlled by controlling the motor, and the temperature of the polymerization reaction can be controlled by introducing the corresponding medium into the jacket (because polymerization is an exothermic reaction, uniform heat exchange is required to control the reaction rate and product quality). Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0015] Figure 1A perspective view of a reaction stirrer for a uniformly sized pyridyl anion resin; Figure 2 A cross-sectional view of a reaction stirrer for a uniformly sized pyridyl anion resin; Figure 3 for Figure 2 A diagram showing the state of the diaphragm after it has been cut open. Figure 4 This is a cross-sectional view of the polymerization reaction. Figure 5 Connection diagram of main spindle, secondary spindle and slider; Figure 6 This is a cross-sectional view of the partition; Figure 7 for Figure 3 Enlarged view of the structure at point A in the image.
[0016] Figure label: 1. Mixing vessel; 101. Motor; 102. Baffle plate; 103. Limiting groove; 104. Through groove; 2. Jacket; 201. Pipe; 3. Main shaft; 301. Anchor-type agitator; 302. Large gear; 303. Spiral blade; 304. Scraper; 4. Secondary shaft; 401. Inclined blade turbine agitator; 402. Small gear; 5. Sliding block; 501. Adjusting screw. Detailed Implementation
[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0018] Please see Figure 1-7 As shown, this utility model is a reaction stirrer for uniformly sized pyridyl anion resin, including a stirring vessel 1, a jacket 2, a main shaft 3, a secondary shaft 4, and a slider 5. A partition 102 is fixed to the upper part of the stirring vessel 1. The stirring vessel 1 is also equipped with a main shaft 3 and two secondary shafts 4. An anchor-type stirring paddle 301 is fixed to the lower outer periphery of the main shaft 3, and symmetrically distributed L-shaped scrapers 304 are also fixed to the lower outer periphery of the main shaft 3. The two scrapers 304 and the anchor-type stirring paddle 301 are staggered. A spiral blade 303 is fixed to the middle of the main shaft 3 below the partition 102. First, the partition plate 102 divides the internal space of the mixing vessel 1 to prevent the mixing area and the transmission area from being connected. The rotation of the main shaft 3 can drive the anchor-type mixing paddle 301 to rotate, which stirs the resin raw materials in the mixing vessel 1. At the same time, it can drive the scraper 304 to rotate. Because the outer wall of the vertical part of the scraper 304 is in soft contact with the inner wall of the mixing vessel 1, and the bottom surface of the horizontal part of the scraper 304 is in soft contact with the inner bottom surface of the mixing vessel 1, the material on the inner wall and inner bottom surface of the mixing vessel 1 can be scraped off, preventing scaling on the wall and settling at the bottom. At the same time, the rotation of the spiral blade 303 "throws up" the material at the bottom and sends it into the suction area near the auxiliary shaft 4 and the inclined blade turbine mixing paddle 401, forming a perfect overall circulation. The lower part of the secondary shaft 4 is fixed with multiple sets of inclined turbine agitators 401 distributed vertically and vertically at equal intervals. The rotation of the secondary shaft 4 causes the inclined turbine agitators 401 to generate strong shearing force, producing a strong axial flow, which causes the material in the mixing vessel 1 to form the main circulation. The liquid is drawn in from above the inclined turbine agitators 401 and discharged from below at a certain angle, thus forming a turbulent circulating flow field that disperses the oil phase into uniformly sized micro-droplets. At the same time, the secondary shaft 4 is not centrally located. This installation method can break the symmetrical flow field and generate more complex and stronger turbulence in the vessel, which greatly eliminates the mixing dead zone and makes the particle size distribution narrower. This is a key means of producing "uniform particle" resin. The main shaft 3 is rotatably connected through the center of the partition plate 102. A large gear 302 is fixed on the upper part of the main shaft 3 above the partition plate 102. Small gears 402 are fixed on the upper parts of the two auxiliary shafts 4 above the partition plate 102, and the large gear 302 and the small gear 402 are meshed together. A motor 101 is fixed at the center of the top surface of the mixing vessel 1, and the output shaft of the motor 101 is connected to the top end of the main shaft 3. The motor 101 drives the main shaft 3 to rotate. The large gear 302 on the main shaft 3 meshes with the small gear 402 to rotate. The inner diameter of the large gear 302 is larger than the inner diameter of the small gear 402, forming a speed-increasing structure, which makes the auxiliary shaft 4 rotate faster, and makes the inclined blade turbine agitator 401 rotate at high speed, forming a high-speed shearing operation.
[0019] A jacket 2 is fixed to the lower outer periphery of the stirred tank 1, and two vertically distributed pipes 201 are fixed through the circumference of the jacket 2. The external medium is connected through the two pipes 201 to input the medium into the jacket 2 and output it for use. Since polymerization is an exothermic reaction, uniform heat exchange is required to control the reaction rate and product quality. Therefore, cooling water is usually used for temperature control. The scraper on the anchor agitator can continuously renew the fluid boundary layer on the tank wall, which greatly improves the heat transfer coefficient of the jacket 2.
[0020] Two symmetrically distributed limiting grooves 103 are provided in the top of the partition plate 102 and the mixing vessel 1, and a slider 5 is slidably arranged in each limiting groove 103. A through groove 104 is provided above and below each limiting groove 103. The limiting groove 103 allows the slider 5 to slide inside it and keeps it from falling off, while the through groove 104 facilitates the passage of the secondary shaft 4. The cross-sectional area of the through groove 104 is smaller than that of the limiting slide groove 103, and the cross-sectional area of the slider 5 is larger than that of the through groove 104. This allows the slider 5 to be moved to block the through slot 104, preventing the upper and lower spaces of the partition 102 from being connected.
[0021] The upper part of the secondary shaft 4 is rotatably connected to two sliders 5 on the same axis, and the top of the secondary shaft 4 extends out of the mixing vessel 1; this can stably ensure the stability of the rotation of the secondary shaft 4 and make the position of the secondary shaft 4 known. The pinion 402 and the large gear 302 are both located in the cavity between the partition plate 102 and the top surface of the mixing vessel 1. With the division of the partition plate 102, the normal transmission of the large gear 302 and the pinion 402 is ensured.
[0022] The end of the slider 5 closest to the side wall of the mixing vessel 1 is rotatably connected to an adjusting screw 501, and the end of the adjusting screw 501 away from the slider 5 is threaded through the mixing vessel 1 and extends out and is fixed with a handwheel; During the polymerization reaction stage and the later maturation stage, rotating the adjusting screw 501 moves the slider 5, causing the large gear 302 and the small gear 402 to disengage, and the secondary shaft 4 stops rotating. Since a strong shearing effect is not required during the polymerization reaction stage and the later maturation stage, the inclined blade turbine agitator 401 stops working at this time.
[0023] The specific working principle of this utility model is as follows: First, the aqueous phase (containing dispersant) is added to the reactor, and stirring is started. Then, the oil phase (monomer, pore-forming agent, and initiator) is slowly added. The feeding part (the external inlet pipe 201 passes through the partition 102 and extends below the partition 102) and the discharge part (located at the bottom of the stirring reactor 1) are omitted in the figure. Then, the dispersion stage begins. At this time, the large gear 302 and the small gear 402 are meshed. The motor 101 drives the main shaft 3 to rotate. The large gear 302 on the main shaft 3 meshes with and drives the small gear 402 to rotate. The inner diameter of the large gear 302 is larger than the inner diameter of the small gear 402, forming a speed-increasing structure. With the rotation of the secondary shaft 4, the inclined blade turbine agitator 401 generates a strong shearing effect, producing a powerful axial flow, which causes the material in the mixing vessel 1 to form a main circulation. The liquid is drawn in from above the inclined blade turbine agitator 401 and discharged from below at a certain angle, thus forming a turbulent circulating flow field that disperses the oil phase into uniformly sized micro-droplets. At the same time, the rotation of the main shaft 3 can drive the anchor agitator 301 to rotate, stirring the resin raw materials in the mixing vessel 1. Meanwhile, the rotation of the spiral blade 303 "throws" the material at the bottom into the suction area near the secondary shaft 4 and the inclined blade turbine agitator 401, forming a perfect overall circulation. After dispersion, the polymerization reaction stage begins. At this time, the main shaft 3 also drives the scraper 304 to rotate. Because the outer wall of the vertical part of the scraper 304 is in soft contact with the inner wall of the mixing vessel 1, and the bottom surface of the horizontal part of the scraper 304 is in soft contact with the inner bottom surface of the mixing vessel 1, the material on the inner wall and inner bottom surface of the mixing vessel 1 can be scraped off, preventing scaling on the wall and settling at the bottom. At the same time, the adjusting screw 501 is rotated to move the slider 5, causing the large gear 302 and the small gear 402 to disengage, and the secondary shaft 4 stops rotating. The stirring target changes from "high-speed dispersion" to "low-speed maintenance of uniform suspension and heat transfer", completing the stirring use in the polymerization reaction stage. In the subsequent maturation stage, the speed of the motor 101 can be further reduced, and the corresponding medium can be introduced into the jacket 2 to control the temperature of the polymerization reaction.
[0024] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.
Claims
1. A reaction stirrer for a uniformly sized pyridyl anion resin, comprising a stirring vessel (1), a jacket (2), a main shaft (3), a secondary shaft (4), and a slider (5), characterized in that: The upper part of the mixing vessel (1) is fixed with a partition plate (102). The mixing vessel (1) is also equipped with a main shaft (3) and two auxiliary shafts (4). An anchor-type stirring paddle (301) is fixed on the lower outer periphery of the main shaft (3), and symmetrically distributed L-shaped scrapers (304) are also fixed on the lower outer periphery of the main shaft (3). The two scrapers (304) and the anchor-type stirring paddle (301) are staggered. A spiral blade (303) is fixed in the middle of the main shaft (3) below the partition plate (102). The lower part of the secondary shaft (4) is fixed with multiple sets of inclined blade turbine agitators (401) that are equidistantly distributed vertically. The main shaft (3) is rotatably connected through the center of the partition (102). A large gear (302) is fixed on the upper part of the main shaft (3) above the partition (102). A small gear (402) is fixed on the upper part of the two secondary shafts (4) above the partition (102). The large gear (302) and the small gear (402) are meshed together.
2. The reaction stirrer for a uniformly sized pyridyl anion resin according to claim 1, characterized in that: A motor (101) is fixed at the center of the top surface of the mixing vessel (1), and the output shaft of the motor (101) is connected to the top end of the main shaft (3) for transmission.
3. The reaction stirrer for a uniformly sized pyridyl anion resin according to claim 1, characterized in that: The lower outer periphery of the stirring vessel (1) is fixed with a jacket (2), and two vertically distributed pipes (201) are fixed through the jacket (2).
4. The reaction stirrer for a uniformly sized pyridyl anion resin according to claim 1, characterized in that: The top of the partition (102) and the stirring vessel (1) are provided with two symmetrically distributed limiting grooves (103), and each limiting groove (103) is provided with a slider (5) slidingly disposed therein. Each limiting groove (103) is provided with a through groove (104) above and below.
5. The reaction stirrer for a uniformly sized pyridyl anion resin according to claim 4, characterized in that: The upper part of the secondary shaft (4) is rotatably connected to two sliders (5) on the same axis as it, and the top of the secondary shaft (4) extends out of the stirring vessel (1). The small gear (402) and the large gear (302) are both located in the cavity between the partition plate (102) and the top surface of the stirring vessel (1).
6. The reaction stirrer for a uniformly sized pyridyl anion resin according to claim 4, characterized in that: The cross-sectional area of the through groove (104) is smaller than that of the limiting slide groove (103), and the cross-sectional area of the slider (5) is larger than that of the through groove (104). The slider (5) is rotatably connected to an adjusting screw (501) at one end near the side wall of the mixing vessel (1), and the adjusting screw (501) at the end away from the slider (5) is threaded through the mixing vessel (1) and extended out and fixed with a handwheel.
7. The reaction stirrer for a uniformly sized pyridyl anion resin according to claim 1, characterized in that: The outer wall of the vertical part of the scraper (304) softly contacts the inner wall of the stirring vessel (1), and the bottom surface of the horizontal part of the scraper (304) softly contacts the inner bottom surface of the stirring vessel (1).