A microemulsion polymerization rolling stirrer and its stirring method

Abstract

The present invention discloses a rolling stirrer for microemulsion polymerization and its stirring method, which includes a housing. A main shaft is arranged inside the housing, and the main shaft can rotate around its axis. A rotating assembly is installed outside the main shaft, and the main shaft can drive the rotating assembly to rotate. The rotating assembly includes a rotating disk, and a fixed disk is arranged below the rotating disk. The fixed disk is sleeved on the main shaft, and the fixed disk can move up and down along the axial direction of the main shaft so that the upper end of the fixed disk approaches or moves away from the rotating disk. The rotating disk includes a main ring, and a plurality of extension rods are arranged outside the main ring. The fixed disk includes a disk body. When the upper end of the fixed disk approaches the rotating disk, the bottom of the extension rod can abut against the upper end of the disk body. The present invention provides a rolling stirrer for microemulsion polymerization and its stirring method, and after stirring, the polymer microemulsion has good dispersibility and high efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of microemulsion polymerization stirring devices, in particular to a microemulsion polymerization rolling stirrer and a stirring method thereof. Background Art

[0002] Compared to conventional emulsion polymerization, polymer microemulsion polymerization requires a more dispersed monomer in the aqueous solution. Emulsion polymerization reactions are typically carried out in a stirring apparatus, requiring the addition of surfactants and ultrasonic treatment to achieve this. Because the stirring rod only stirs a portion of the agitator during stirring, the entire agitator cannot achieve completely uniform stirring. This causes multiple monomers to clump together during stirring, forming relatively large particles, which affects the dispersion index of the microemulsion. Attempting to reduce this phenomenon by extending the stirring time is inefficient. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a microemulsion polymerization roller agitator and a stirring method thereof, wherein the microemulsion has good dispersibility and high efficiency after stirring.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A microemulsion polymerization rolling agitator includes a shell, a main shaft is provided in the shell, the main shaft can rotate around its axis, a rotating component is installed on the outside of the main shaft, the main shaft can drive the rotating component to rotate, the rotating component includes a rotating disk, a fixed disk is provided below the rotating disk, the fixed disk is inserted into the main shaft, and the fixed disk can move up and down along the main shaft axis so that the upper end of the fixed disk approaches or moves away from the rotating disk, the rotating disk includes a main ring, and a plurality of extension rods are provided on the outside of the main ring. The fixed disk includes a disk body, and when the upper end of the fixed disk approaches the rotating disk, the bottom of the extension rod can abut against the upper end of the disk body.

[0006] A countersunk hole is provided at the bottom of the main ring, and the disk body can be inserted into the countersunk hole. The main ring is provided with a protrusion, and the protrusion is located in the countersunk hole. The disk body includes a circular ring 1 located at the upper end, and the protrusion can abut against the upper end surface of the circular ring 1.

[0007] The upper end surface of the first circular ring includes a second circular arc surface, and the second circular arc surface is inclined in an arc shape along the circumferential direction of the first circular ring.

[0008] The upper end surface of the ring also includes an arc surface 1, which is a plane. The arc surface 1 and the arc surface 2 are located on the same circumference. The lowest surface of the arc surface 2 is flush with the arc surface 1, and a cross-section is formed between the highest surface of the arc surface 2 and the arc surface 1.

[0009] A support assembly is connected to the outer wall of the main shaft. The support assembly includes a support sleeve. The disc body includes a second ring located at the bottom. The second ring is inserted into the upper end of the support sleeve. A spring is arranged inside the support sleeve. The upper end of the spring abuts against the bottom of the second ring. The support sleeve includes a boss. The lower end of the spring abuts against the boss.

[0010] The extension rod is installed with a roller. The roller can rotate axially along the extension rod. The roller can roll along the upper end surface of the disc body.

[0011] The disc body is provided with a groove. The roller can roll along the inner wall of the groove.

[0012] The groove is arc-shaped. The radius of the roller matches the arc radius of the groove.

[0013] A limiting rod is installed on the outside of the disc body. A groove is provided on the inner wall of the housing. The outside of the limiting rod is inserted into the groove on the inner wall of the housing. The inner side of the limiting rod is fixed to the bottom of the disc body. The limiting rod can slide up and down along the inner wall of the housing.

[0014] A stirring method of a microemulsion polymerization rolling stirrer includes a rolling stirrer and also includes the following stirring method:

[0015] The rotation of the main shaft drives the rotation of the rotating assembly. The rotation of the extension rod drives the rotation of the roller.

[0016] When the convex portion is above the first arc surface, the bottom surface of the roller abuts against the upper end of the disc body. The roller rolls on the upper end surface of the disc body.

[0017] When the convex portion transitions from the first arc surface to the second arc surface and abuts against the lowest surface of the second arc surface and moves to the highest surface, the disc body moves downward. The roller is separated from the disc body up and down.

[0018] When the convex portion transitions from the highest surface of the second arc surface to the first arc surface, the disc body rises and approaches and contacts the roller. The spring elongates.

[0019] The beneficial effects of the present invention are:

[0020] By rolling the roller on the upper end surface of the disc body and rolling and pressing the emulsion between the roller and the disc body, the generation of large particle monomers is reduced. When the roller enters the groove, due to the matching of the radius size of the roller with the groove, when the roller rolls and presses on the inner wall of the groove, its instantaneous contact area is larger, forming a larger area of rolling and pressing, and the rolling and pressing effect is stronger, improving the dispersibility after the microemulsion is stirred.

[0021] By setting the cross-section part, when the disk body and the roller approach each other vertically, the emulsion between them is squeezed vertically, intensifying the collision between the monomers of the emulsion, reducing the occurrence of the monomers aggregating into larger particles during stirring, enhancing the stirring effect at the same time. And due to the resistance of the emulsion, when the upper end of the disk body approaches the bottom of the roller, the speed of the disk body decreases to avoid excessive impact on the roller by the disk body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of the embodiment;

[0023] Figure 2 is Figure 1 an enlarged view of part A in

[0024] Figure 3 is a perspective view of the fixed disk in the embodiment.

[0025] In the figure: main shaft 1, rotating assembly 2, rotating disk 21, main ring 211, extension rod 2111, counterbore 212, protruding part 213, limit pin 22, fixed disk 3, disk body 31, first ring 311, first arc surface 3111, second arc surface 3112, cross-section part 3113, groove 312, through hole 313, second ring 314, support assembly 4, support sleeve 41, boss 411, spring 42, limit rod 5, housing 6, roller 7. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions of the present invention will be further described below through embodiments and in conjunction with the drawings.

[0027] As Figures 1-3 shown, a microemulsion polymerization rolling stirrer includes a housing 6. A main shaft 1 is arranged inside the housing 6. As Figure 1 shown, the main shaft 1 is driven by an upper-end connected motor to rotate around its axis. A rotating assembly 2 is installed outside the main shaft 1. The main shaft 1 can drive the rotating assembly 2 to rotate. A plurality of rotating assemblies 2 are distributed axially up and down along the main shaft 1.

[0028] The rotating assembly 2 includes a rotating disk 21. As Figure 1 , 2 shown, the rotating disk 21 includes a main ring 211. The main ring 211 is a circular ring structure. The main ring 211 is sleeved on the main shaft 1. The inner side of the main ring 211 is fixedly connected to the main shaft 1. A counterbore 212 is provided at the bottom of the main ring 211. The counterbore 212 forms an opening at the bottom of the main ring 211. The counterbore 212 extends upward along the bottom surface of the main ring 211. The main ring 211 is provided with a protruding part 213. The protruding part 213 is located inside the counterbore 212. The protruding part 213 extends downward along the upper wall of the counterbore 212. The downward extension length of the protruding part 213 does not exceed the counterbore 212. The bottom of the protruding part 213 is a circular structure.

[0029] A plurality of extension rods 2111 are provided on the outer side of the main ring 211. The extension rods 2111 extend outward along the outer wall of the main ring 211 to form a rod-shaped structure. A plurality of extension rods 2111 are provided along the circumferential direction of the main ring 211, and the extension rods 2111 are circular. The extension rods 2111 rotate to stir the solution in the housing 6.

[0030] A roller 7 is sleeved on the outer wall of the extension rod 2111, and a limit nail 22 is installed on the outer side of the extension rod 2111 to prevent the axial movement of the roller 7. The roller 7 can rotate axially along the extension rod 2111, and the extension rod 2111 can drive the roller 7 to rotate axially along the rotating disk 21. When the roller 7 is in upper and lower contact with the disk body 31, the roller 7 rotates axially along the rotating disk 21 and rolls along the upper end surface of the disk body 31 at the same time.

[0031] As Figure 2 shown, a support assembly 4 is connected to the outer wall of the main shaft 1. The support assembly 4 is located below the rotating assembly 2 and corresponds to the rotating assembly 2 one by one. The support assembly 4 includes a support sleeve 41. The support sleeve 41 is a cylindrical structure. The support sleeve 41 is sleeved on the main shaft 1, and the inner side of the lower part of the support sleeve 41 is connected to the main shaft 1 through a bearing.

[0032] The support sleeve 41 includes a boss 411. The boss 411 extends radially inward along the inner wall of the support sleeve 41 to form a ring shape. A spring 42 is arranged in the support sleeve 41, and the lower end of the spring 42 abuts against the boss 411.

[0033] A fixed disk 3 is arranged below the rotating disk 21. The fixed disk 3 is located above the support assembly 4. The fixed disk 3 is sleeved on the main shaft 1. The fixed disk 3 can move up and down axially along the main shaft 1 so that the upper end of the fixed disk 3 approaches or moves away from the rotating disk 21. Specifically, the fixed disk 3 includes a disk body 31. The disk body 31 is a disk-shaped structure. The disk body 31 is sleeved on the main shaft 1. The disk body 31 includes a second ring 314 at the bottom. The second ring 314 extends downward along the lower end surface of the disk body 31 to form a ring-shaped structure. The second ring 314 is inserted into the upper part of the support sleeve 41. The second ring 314 can slide up and down along the inner wall of the support sleeve 41. The bottom of the second ring 314 abuts against the upper end of the spring 42.

[0034] The disk body 31 is provided with grooves 312. The grooves 312 are recessed downward along the upper end surface of the disk body 31 into arc-shaped grooves. The grooves 312 extend radially along the disk body 31. The radius of the grooves 312 matches the radius of the roller 7. A plurality of grooves 312 are evenly distributed along the circumferential direction of the disk body 31, and the number of the grooves 312 corresponds to the roller 7 one by one. The roller 7 can roll along the inner wall of the grooves 312.

[0035] The disk body 31 is provided with through holes 313 in the circumferential direction. The through holes 313 penetrate the disk body 31 up and down. The through holes 313 are used for the circulation of the emulsion.

[0036] A plurality of limit rods 5 are installed on the outer side of the disk body 31, as Figure 1As shown, the limiting rod 5 is a strip-shaped structure. The outer side of the limiting rod 5 is inserted into the groove on the inner wall of the housing 6, and the inner side of the limiting rod 5 is fixed to the bottom of the disk body 31. The limiting rod 5 can slide up and down along the inner wall of the housing 6, and the limiting rod 5 plays a role in restricting the rotation of the disk body 31.

[0037] As Figure 2 , 3 shown, the disk body 31 further includes a first ring 311 at the upper end. The first ring 311 extends upward from the upper end surface of the disk body 31 to form an annular structure. The first ring 311 can be inserted into the counterbore 212. When the upper end of the fixed disk 3 approaches the rotating disk 21, the bottom of the extension rod 2111 can abut against the upper end of the disk body 31. Specifically, the upper end surface of the first ring 311 includes an arc surface 3111 and an arc surface 3112. The arc surface 3111 and the arc surface 3112 are located on the same circumference. The arc surface 3111 is a plane, and the arc surface 3112 is an inclined surface. The arc surface 3112 is arcuately inclined along the circumferential direction of the first ring 311, with one side of the arc surface 3112 being higher and the other side being lower. Both the arc surface 3111 and the arc surface 3112 are semi-circular. The lowest surface of the arc surface 3112 is flush with the arc surface 3111, and a stepped portion 3113 is formed between the highest surface of the arc surface 3112 and the arc surface 3111. The stepped portion 3113 forms a drop in the axial direction of the first ring 311.

[0038] When the protrusion 213 abuts against the arc surface 3112, as the protrusion 213 rotates, the moving direction of the protrusion 213 is from the lowest surface to the highest surface of the arc surface 3112. During the movement, the protrusion 213 drives the arc surface 3112 to move the fixed disk 3 downward, compressing the spring 42. The roller 7 is located above the disk body 31, and there is a gap between the roller 7 and the disk body 31.

[0039] When the protrusion 213 transitions from the highest surface of the arc surface 3112 to the arc surface 3111, the spring 42 pushes the fixed disk 3 upward, causing the roller 7 and the disk body 31 to fit together vertically.

[0040] A stirring method for a microemulsion polymerization rolling stirrer, using the above-mentioned microemulsion polymerization rolling stirrer, the stirring method is as follows:

[0041] The rotation of the main shaft 1 drives the rotation of the rotating assembly 2. The extension rod 2111 of the rotating assembly 2 drives the roller 7 to rotate, and the roller 7 stirs the solution in the housing 6.

[0042] When the convex part 213 is located above the first arc surface 3111, the bottom surface of the roller 7 abuts against the upper end of the disc body 31. As the roller 7 rotates along the rotating disc 21, the roller 7 rolls on the upper surface of the disc body 31, and the emulsion between the roller 7 and the disc body 31 is rolled to reduce the generation of large particle monomers. When the roller 7 enters the groove 312, the convex part 213 is just located at the upper end of the first arc surface 3111. Since the radius size of the roller 7 matches that of the groove 312, when the roller 7 rolls and rolls on the inner wall of the groove 312, its instantaneous contact area is larger, forming a larger area of rolling, and the rolling effect is stronger. The spring 42 remains in a compressed state throughout the process to ensure that there is sufficient force between the roller 7 and the disc body 31.

[0043] When the convex part 213 transitions from the first arc surface 3111 to the second arc surface 3112 and abuts against the lowest surface of the second arc surface 3112 and moves to the highest surface, the disc body 31 moves downward, and there is a gap between the disc body 31 and the roller 7. Since the roller 7 has been rotating axially along the rotating disc 21, under the agitation of the roller 7, the emulsion between the roller 7 and the disc body 31 is in a rapid flow state. Therefore, the emulsion between the roller 7 and the disc body 31 is continuously replaced, which is beneficial for the next rolling.

[0044] When the convex part 213 transitions from the highest surface of the second arc surface 3112 to the first arc surface 3111, due to the setting of the first arc surface 3111, the disc body 31 quickly rises and approaches and contacts the roller 7, and the spring 42 extends. During the rapid rising of the disc body 31, the emulsion between the disc body 31 and the roller 7 is squeezed up and down, intensifying the collision between the monomers of the emulsion, reducing the occurrence of the situation where monomers cluster together to form larger particles during stirring, and at the same time enhancing the stirring effect. And due to the resistance of the emulsion, when the upper end of the disc body 31 approaches the bottom of the roller 7, the speed of the disc body 31 decreases to avoid excessive impact on the roller 7 by the disc body 31.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A microemulsion polymerization rolling stirrer, comprising a housing (6), characterized in that: A main shaft (1) is provided inside the housing (6). The main shaft (1) can rotate around its axis. A rotating assembly (2) is installed outside the main shaft (1). The main shaft (1) can drive the rotating assembly (2) to rotate. The rotating assembly (2) includes a rotating disk (21). A fixed disk (3) is arranged below the rotating disk (21). The fixed disk (3) is sleeved on the main shaft (1). The fixed disk (3) can move up and down along the axial direction of the main shaft (1) so that the upper end of the fixed disk (3) approaches or moves away from the rotating disk (21). The rotating disk (21) includes a main ring (211). A plurality of extension rods (2111) are arranged outside the main ring (211). The fixed disk (3) includes a disk body (31). When the upper end of the fixed disk (3) approaches the rotating disk (21), the bottom of the extension rod (2111) can abut against the upper end of the disk body (31). A sunken hole (212) is provided at the bottom of the main ring (211). The disk body (31) can be inserted into the sunken hole (212). The main ring (211) is provided with a protrusion (213). The protrusion (213) is located inside the sunken hole (212). The disk body (31) includes a first ring (311) at the upper end. The protrusion (213) can abut against the upper end surface of the first ring (311). The upper end surface of the first ring (311) includes a second arc surface (3112). The second arc surface (3112) is arc-shaped and inclined along the circumferential direction of the first ring (311). The upper end surface of the first ring (311) further includes a first arc surface (3111). The first arc surface (3111) is a plane. The first arc surface (3111) and the second arc surface (3112) are located on the same circumference. The lowest surface of the second arc surface (3112) is flush with the first arc surface (3111). A broken surface part (3113) is formed between the highest surface of the second arc surface (3112) and the first arc surface (3111). A support assembly (4) is connected to the outer wall of the main shaft (1). The support assembly (4) includes a support sleeve (41). The disk body (31) includes a second ring (314) at the bottom. The second ring (314) is inserted into the upper end of the support sleeve (41). A spring (42) is arranged inside the support sleeve (41). The upper end of the spring (42) abuts against the bottom of the second ring (314). The support sleeve (41) includes a boss (411). The lower end of the spring (42) abuts against the boss (411). A roller (7) is installed on the extension rod (2111). The roller (7) can rotate along the axial direction of the extension rod (2111). The roller (7) can roll along the upper end surface of the disk body (31). The disk body (31) is provided with a groove (312). The roller (7) can roll along the inner wall of the groove (312).

2. The microemulsion polymerization rolling stirrer according to claim 1, characterized in that: The groove (312) is arc-shaped. The radius of the roller (7) matches the arc radius of the groove (312).

3. The microemulsion polymerization rolling stirrer according to claim 1, wherein: A limiting rod (5) is installed on the outer side of the disk body (31). A groove is provided on the inner wall of the housing (6). The outer side of the limiting rod (5) is inserted into the groove on the inner wall of the housing (6). The inner side of the limiting rod (5) is fixed to the bottom of the disk body (31). The limiting rod (5) can slide up and down along the inner wall of the housing (6).

4. A stirring method for a microemulsion polymerization rolling stirrer, comprising the microemulsion polymerization rolling stirrer according to any one of claims 1-3, characterized in that: It further includes the following stirring method: The rotation of the main shaft (1) drives the rotation of the rotating assembly (2), and the rotation of the extension rod (2111) drives the rotation of the roller (7); When the convex part (213) is located above the first arc surface (3111), the bottom surface of the roller (7) abuts against the upper end of the disk body (31), and the roller (7) rolls on the upper end surface of the disk body (31); When the convex part (213) transitions from the first arc surface (3111) to the second arc surface (3112) and abuts against the lowest surface of the second arc surface (3112) and moves to the highest surface, the disk body (31) moves downward, and the roller (7) is separated from the disk body (31) up and down; When the convex part (213) transitions from the highest surface of the second arc surface (3112) to the first arc surface (3111), the disk body (31) rises and approaches and contacts the roller (7), and the spring (42) elongates.

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