An emulsion polymerization device

Abstract

The present invention relates to the technical field of emulsion polymerization, and specifically discloses an emulsion polymerization device, which includes a polymerization reactor. The polymerization reactor includes a reactor body and a cover body installed on the upper part of the reactor body. A mixing chamber for stirring emulsion polymerization raw materials is formed inside the reactor body, and a mixer is installed inside the mixing chamber. The mixer includes a first stirring component rotatably arranged inside the mixing chamber; and a second stirring component revolving around the first stirring component. By installing a mixer inside the reactor body, the present invention controls the first stirring component to rotate self by a first driver, so that the first stirring component drives the second stirring component to revolve around the first stirring component during the self-rotation process, and the second driver drives the second stirring component to rotate self, thereby increasing the stirring range of the mixer, improving the stirring effect of the mixer, and improving the contact efficiency of the emulsion polymerization raw materials.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of emulsion polymerization, and specifically, it is an emulsion polymerization device. Background Art

[0002] Emulsion polymerization is a process in which monomers are dispersed in water to form an emulsion with the aid of an emulsifier and mechanical stirring, and then an initiator is added to initiate the polymerization of the monomers. When producing synthetic rubber by the emulsion polymerization method, in addition to the four main components of monomers, water, emulsifiers, and initiators, additives such as buffers (used to keep the system pH constant), activators (forming a redox cycle system), regulators (regulating molecular weight and inhibiting gel formation), and anti-aging agents (preventing the aging of raw rubber and vulcanized rubber) are often added.

[0003] Emulsion reaction kettles are a type of equipment frequently used in industries such as the chemical industry, food industry, and pharmaceutical industry, especially in the chemical industry. Emulsion polymerization kettles mostly use water as the medium, and the pressure and temperature used are not high. Therefore, they are more convenient to operate and have less danger. However, depending on the products produced, the requirements for emulsion polymerization kettles are also different. In existing emulsion polymerization reaction kettles, the stirring is insufficient, resulting in problems such as incomplete polymer reaction, low polymerization reaction efficiency, and long duration. Summary of the Invention

[0004] The purpose of the present invention is to provide an emulsion polymerization device to solve the problems of insufficient stirring in existing emulsion polymerization reaction kettles, which lead to incomplete polymer reaction, low polymerization reaction efficiency, and long duration as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An emulsion polymerization device includes a polymerization reaction kettle, the polymerization reaction kettle includes a reaction kettle body and a cover installed on the upper part of the reaction kettle body. An internal mixing cavity for stirring emulsion polymerization raw materials is formed inside the reaction kettle body, and a mixer is installed inside the mixing cavity. The mixer includes:

[0007] A first stirring component rotatably arranged inside the mixing cavity;

[0008] A second stirring component revolving around the first stirring component;

[0009] A first driver for controlling the first stirring component to rotate self, so that the first stirring component in the self-rotating state drives the second stirring component to revolve around the first stirring component; and

[0010] A second driver for controlling the second stirring component in the revolving state to rotate self, increasing the stirring range of the mixer.

[0011] As a further solution of the present invention: The first stirring assembly includes:

[0012] A first rotating shaft, on which a first gear is fixedly installed, and the first rotating shaft is also fixedly connected to one end of a first connecting rod;

[0013] A plurality of stirring paddles installed on the first rotating shaft;

[0014] The second stirring assembly includes:

[0015] A second rotating shaft, on which a second gear is rotatably installed, the second gear meshes with the first gear, and the second rotating shaft is also rotatably connected to the other end of the first connecting rod;

[0016] A plurality of stirring paddles installed on the second rotating shaft.

[0017] As a further solution of the present invention: A guiding groove is formed on the cover body, a slider is slidably installed inside the guiding groove, the second rotating shaft is also rotatably connected to one end of a second connecting rod, and the other end of the second connecting rod is rotatably connected to the slider.

[0018] As a further solution of the present invention: The first driver is a first motor fixedly installed at the bottom of the reaction kettle body, and the output end of the first motor is fixedly connected to the first rotating shaft; the second driver is a driving motor arranged below the second rotating shaft, the output end of the driving motor is fixedly connected to the second rotating shaft, and a guiding seat is provided at the bottom of the driving motor, and the guiding seat is slidably connected to the inner wall of the reaction kettle body.

[0019] As a further solution of the present invention: It further includes a bottom plate and a frame installed on the bottom plate, the polymerization reaction kettle is installed on the frame, a sliding groove is formed on the frame, both the upper and lower sides of the polymerization reaction kettle are slidably installed on the frame through connecting pieces, and a driving assembly for controlling the polymerization reaction kettle to slide along the sliding groove is further provided at the bottom of the frame.

[0020] As a further solution of the present invention: The connecting piece includes a sliding seat and a connecting frame, one side of the sliding seat is slidably connected to the sliding groove, the other side of the sliding seat is hinged to one end of the connecting frame, and the other end of the connecting frame is hinged to the polymerization reaction kettle.

[0021] As a further solution of the present invention: The driving assembly includes an adjusting screw rotatably installed at the bottom of the frame, a nut sleeve threadedly connected to the adjusting screw, and a second motor for controlling the rotation of the adjusting screw, the nut sleeve is slidably installed at the bottom of the frame, and the nut sleeve is fixedly connected to the connecting piece connecting the bottom of the polymerization reaction kettle.

[0022] As a further solution of the present invention: both the first rotating shaft and the second rotating shaft are of hollow structures. The first rotating shaft is communicated with the feeding port through a first feeding pipe, and the second rotating shaft is communicated with the feeding port through a second feeding pipe. Both the first feeding pipe and the second feeding pipe are of flexible pipe structures, and the first feeding pipe is rotatably connected to the first rotating shaft.

[0023] As a further solution of the present invention: the stirring paddle includes a paddle board. A liquid inlet is provided at the connection of the paddle board and the first rotating shaft or the second rotating shaft. A plurality of liquid outlets are also provided on the paddle board. The liquid outlets are communicated with the liquid inlet through a channel provided inside the paddle board. The paddle board is communicated with the first rotating shaft or the second rotating shaft through the liquid inlet.

[0024] As a further solution of the present invention: the paddle board includes a horizontal side and an inclined side. The liquid outlets are provided on the inclined side of the paddle board. The installation directions of the stirring paddles on the first rotating shaft and the second rotating shaft are opposite, so that the inclined sides of the paddle boards on the first rotating shaft and the second rotating shaft are arranged oppositely.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: by installing a mixer inside the reaction kettle body, the mixer includes a first stirring component rotatably arranged at the center inside the mixing cavity and a second stirring component revolving around the first stirring component. The first driving device controls the first stirring component to rotate self, so that the first stirring component drives the second stirring component to revolve around the first stirring component during the self-rotation process. And by using the second driving device to drive the second stirring component to rotate self while the second stirring component is revolving, the stirring range of the mixer is increased, the stirring effect of the mixer is improved, and the contact efficiency of the raw materials for emulsion polymerization is improved. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of an emulsion polymerization device.

[0027] Figure 2 It is a front view of the emulsion polymerization device.

[0028] Figure 3 It is a bottom view of the emulsion polymerization device.

[0029] Figure 4 It is a side view of the emulsion polymerization device.

[0030] Figure 5 It is a schematic structural diagram of the mixer in the emulsion polymerization device.

[0031] Figure 6 It is a schematic structural diagram of the mixer and the cover body in the emulsion polymerization device.

[0032] Figure 7 It is a schematic structural diagram of the stirring paddle in the emulsion polymerization device.

[0033] In the figure: 10 - bottom plate, 20 - frame, 21 - chute, 30 - connecting piece, 31 - sliding seat, 32 - connecting frame, 40 - polymerization reactor, 41 - cover body, 411 - feed inlet, 412 - guiding groove, 42 - reactor body, 421 - mixing chamber, 422 - discharge port, 423 - first motor, 50 - mixer, 51 - first rotating shaft, 52 - first gear, 53 - first feed pipe, 54 - first connecting rod, 55 - second connecting rod, 551 - slider, 56 - second feed pipe, 57 - second gear, 58 - second rotating shaft, 59 - driving motor, 591 - guiding seat, 60 - driving assembly, 61 - adjusting screw, 62 - screw sleeve, 63 - second motor, 70 - stirring paddle, 71 - paddle board, 72 - liquid inlet, 73 - liquid outlet. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] An emulsion reactor is a device often used in industries such as the chemical industry, food industry, and pharmaceutical industry, especially in the chemical industry. The emulsion polymerization kettle mostly uses water as a medium, and the pressure and temperature used are not high. Therefore, it is more convenient to operate and has less danger. However, according to the different products produced, the requirements for the emulsion polymerization kettle are also different. In the existing emulsion polymerization reactors, the stirring is not sufficient, resulting in problems such as incomplete polymer reaction, low polymerization reaction efficiency, and long time consumption.

[0036] Based on this, please refer to Figure 1-2, in an embodiment of the present invention, an emulsion polymerization device includes a bottom plate 10, a frame 20 installed on the bottom plate 10, and a polymerization reactor 40 installed on the frame 20. The polymerization reactor 40 includes a reactor body 42 and a cover body 41 installed on the upper part of the reactor body 42. An internal mixing cavity 421 for stirring emulsion polymerization raw materials is formed inside the reactor body 42. It can be understood that the emulsion polymerization raw materials include monomers, water, and at least one additive. A mixer 50 is installed inside the reactor body 42 at the mixing cavity 421. The mixer 50 includes a first stirring component rotatably arranged at the center inside the mixing cavity 421, a second stirring component revolving around the first stirring component, a first driver for controlling the self-rotation of the first stirring component, and a second driver for controlling the self-rotation of the second stirring component. The first driver controls the self-rotation of the first stirring component. During the self-rotation of the first stirring component, the first stirring component drives the second stirring component to revolve around the first stirring component. While the second stirring component is revolving, the second driver drives the second stirring component to self-rotate, so as to increase the stirring range of the mixer 50, improve the stirring effect of the mixer 50, and improve the contact efficiency of the emulsion polymerization raw materials;

[0037] Please refer to Figure 5-6 , in an embodiment of the present invention, the first stirring component includes a first rotating shaft 51 and a plurality of stirring paddles 70 installed on the first rotating shaft 51. The second stirring component includes a second rotating shaft 58 and a plurality of stirring paddles 70 installed on the second rotating shaft 58. A first gear 52 is fixedly installed on the first rotating shaft 51. A second gear 57 is rotatably installed on the second rotating shaft 58. The second gear 57 meshes with the first gear 52. One end of a first connecting rod 54 is also fixedly connected to the first rotating shaft 51. The other end of the first connecting rod 54 is rotatably connected to the second rotating shaft 58. When the first rotating shaft 51 is in a rotating state, it drives the second rotating shaft 58 to revolve around the first rotating shaft 51;

[0038] Furthermore, a guiding groove 412 is formed on the cover body 41. A slider 551 is slidably installed inside the guiding groove 412. One end of a second connecting rod 55 is also rotatably connected to the second rotating shaft 58. The other end of the second connecting rod 55 is rotatably connected to the slider 551. When the second rotating shaft 58 revolves around the first rotating shaft 51, the second gear 57 revolves around the first gear 52, and the first connecting rod 54 drives the slider 551 to reciprocally slide inside the guiding groove 412 through the second connecting rod 55;

[0039] In addition, in the embodiment of the present invention, the first driver is a first motor 423 fixedly installed at the bottom of the reactor body 42. The output end of the first motor 423 is fixedly connected to the first rotating shaft 51 and is used to control the rotation of the first rotating shaft 51. The second driver is a driving motor 59 arranged below the second rotating shaft 58. The output end of the driving motor 59 is fixedly connected to the second rotating shaft 58 and is used to drive the rotation of the second rotating shaft 58. A guiding seat 591 is provided at the bottom of the driving motor 59. The guiding seat 591 is slidably connected to the inner wall of the reactor body 42. When the second rotating shaft 58 revolves around the first rotating shaft 51, the driving motor 59 drives the second rotating shaft 58 to rotate, so as to control the stirring paddles 70 on the first rotating shaft 51 and the second rotating shaft 58 to rotate simultaneously, enabling the emulsion polymerization raw materials inside the mixing chamber 421 to come into full contact, accelerating the emulsion polymerization speed and reducing the polymerization reaction time.

[0040] It should be noted that at least one feed port 411 is opened on the cover body 41 for adding emulsion polymerization raw materials, and at least one discharge port 422 is opened at the bottom of the reactor body 42 for discharging the formed emulsion.

[0041] Please refer to Figure 1-4 , in the embodiment of the present invention, a sliding groove 21 is opened on the frame 20. Both the upper and lower sides of the polymerization reactor 40 are slidably installed on the frame 20 through connecting members 30. A driving assembly 60 for controlling the sliding of the polymerization reactor 40 along the sliding groove 21 is further provided at the bottom of the frame 20 to adjust the posture of the polymerization reactor 40. The posture includes a vertical posture, a horizontal posture, and an inclined posture. Among them, the vertical posture and the inclined posture are used for emulsion polymerization, and the horizontal posture is used for the cleaning and maintenance of the polymerization reactor 40;

[0042] Furthermore, in the embodiment of the present invention, the connecting member 30 includes a sliding seat 31 and a connecting frame 32. One side of the sliding seat 31 is slidably connected to the sliding groove 21, the other side of the sliding seat 31 is hinged to one end of the connecting frame 32, and the other end of the connecting frame 32 is hinged to the polymerization reactor 40;

[0043] Furthermore, the driving assembly 60 includes an adjusting screw 61 rotatably mounted at the bottom of the frame 20, a screw sleeve 62 threadedly connected to the adjusting screw 61, and a second motor 63 for controlling the rotation of the adjusting screw 61. The screw sleeve 62 is slidably mounted at the bottom of the frame 20 and is fixedly connected to a connecting member 30 connecting the bottom of the polymerization reactor 40. The second motor 63 controls the rotation of the adjusting screw 61, and the adjusting screw 61 drives the screw sleeve 62 to slide at the bottom of the frame 20. When the screw sleeve 62 slides, it pulls the bottom of the polymerization reactor 40 to slide on the chute 21 through the connecting member 30. While the bottom of the polymerization reactor 40 slides, it drives the upper part of the polymerization reactor 40 to slide inside the chute 21, thereby changing the posture of the polymerization reactor 40.

[0044] Please refer to Figure 5-7 , in the embodiment of the present invention, both the first rotating shaft 51 and the second rotating shaft 58 are hollow structures. The first rotating shaft 51 is communicated with the feed port 411 through a first feed pipe 53, and the second rotating shaft 58 is communicated with the feed port 411 through a second feed pipe 56 (not sharing the same feed port 411 with the first feed pipe 53). Both the first feed pipe 53 and the second feed pipe 56 are of hose structures, and the first feed pipe 53 is rotatably connected to the first rotating shaft 51 to introduce the emulsion polymerization raw materials added from the feed port 411 into the first rotating shaft 51 and the second rotating shaft 58.

[0045] In addition, in the embodiment of the present invention, the stirring paddle 70 includes a paddle plate 71. A liquid inlet 72 is provided at the connection between the paddle plate 71 and the first rotating shaft 51 or the second rotating shaft 58. A plurality of liquid outlets 73 are also provided on the paddle plate 71. The liquid outlets 73 are communicated with the liquid inlet 72 through a channel provided inside the paddle plate 71. The paddle plate 71 is communicated with the first rotating shaft 51 or the second rotating shaft 58 through the liquid inlet to introduce the emulsion polymerization raw materials into the paddle plate 71, and then discharge them into the interior of the mixing chamber 421 from the liquid outlets 73, so that the emulsion polymerization raw materials are quickly distributed inside the mixing chamber 421, accelerating the diffusion rate of the emulsion polymerization raw materials, thereby further improving the emulsion polymerization efficiency.

[0046] In addition, in the embodiment of the present invention, the paddle plate 71 includes a horizontal side and an inclined side. Figure 7 For example, the upper side of the paddle plate 71 is the horizontal side, and the lower side of the paddle plate 71 is the inclined side. The liquid outlets 73 are provided on the inclined side of the paddle plate 71. The stirring paddles 70 on the first rotating shaft 51 and the second rotating shaft 58 are installed in opposite directions, so that the inclined sides of the paddle plates 71 on the first rotating shaft 51 and the second rotating shaft 58 are arranged opposite to each other. At this time, the emulsion polymerization raw materials (such as monomers) inside the paddle plate 71 on the first rotating shaft 51 and the emulsion polymerization raw materials (such as additives) inside the paddle plate 71 on the second rotating shaft 58 collide with each other when flowing out, thereby quickly initiating the polymerization of the monomers and accelerating the emulsion polymerization speed.

[0047] In summary, the present invention installs a mixer inside the reactor body. The mixer includes a first stirring component rotatably arranged at the center of the mixing chamber and a second stirring component revolving around the first stirring component. The first driving device controls the first stirring component to rotate self - sufficiently. During the self - rotation of the first stirring component, the second stirring component is driven to revolve around the first stirring component. And while the second stirring component is revolving, the second driving device drives the second stirring component to rotate self - sufficiently, thereby increasing the stirring range of the mixer, improving the stirring effect of the mixer, and enhancing the contact efficiency of the raw materials for emulsion polymerization.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0049] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An emulsion polymerization device, comprising a polymerization reactor (40), the polymerization reactor (40) including a reactor body (42) and a cover body (41) installed on the upper part of the reactor body (42), a mixing chamber (421) for stirring emulsion polymerization raw materials is formed inside the reactor body (42), a feed port (411) is provided on the cover body (41), and a discharge port (422) is provided at the bottom of the reactor body (42), characterized in that, A mixer (50) is installed inside the mixing chamber (421). The mixer (50) includes: A first stirring component rotatably arranged inside the mixing chamber (421), the first stirring component including a first rotating shaft (51) and a plurality of stirring paddles (70) installed on the first rotating shaft (51); A second stirring component revolving around the first stirring component, the second stirring component including a second rotating shaft (58) and a plurality of stirring paddles (70) installed on the second rotating shaft (58); Both the first rotating shaft (51) and the second rotating shaft (58) are of a hollow structure. The first rotating shaft (51) is communicated with the feed inlet (411) through a first feed pipe (53), and the second rotating shaft (58) is communicated with the feed inlet (411) through a second feed pipe (56). Both the first feed pipe (53) and the second feed pipe (56) are of a flexible pipe structure, and the first feed pipe (53) is rotatably connected to the first rotating shaft (51); A first driver for controlling the first stirring component to rotate self, so that the first stirring component in the self-rotating state drives the second stirring component to revolve around the first stirring component; and a second driver for controlling the second stirring component in the revolving state to rotate self, increasing the stirring range of the mixer (50); It further includes a bottom plate (10) and a frame (20) installed on the bottom plate (10). The polymerization reactor (40) is installed on the frame (20). A chute (21) is opened on the frame (20). Both the upper and lower sides of the polymerization reactor (40) are slidably installed on the frame (20) through connectors (30). A driving component (60) for controlling the polymerization reactor (40) to slide along the chute (21) is further arranged at the bottom of the frame (20).

2. The emulsion polymerization device according to claim 1, characterized in that, A first gear (52) is fixedly installed on the first rotating shaft (51), and the first rotating shaft (51) is further fixedly connected to one end of a first connecting rod (54); a second gear (57) is rotatably installed on the second rotating shaft (58), the second gear (57) meshes with the first gear (52), and the second rotating shaft (58) is further rotatably connected to the other end of the first connecting rod (54).

3. The emulsion polymerization device according to claim 2, wherein A guiding groove (412) is opened on the cover body (41). A slider (551) is slidably installed inside the guiding groove (412). One end of a second connecting rod (55) is rotatably connected to the second rotating shaft (58), and the other end of the second connecting rod (55) is rotatably connected to the slider (551).

4. The emulsion polymerization device according to claim 3, characterized in that, The first driver is a first motor (423) fixedly installed at the bottom of the reactor body (42), and the output end of the first motor (423) is fixedly connected to the first rotating shaft (51); the second driver is a driving motor (59) arranged below the second rotating shaft (58), the output end of the driving motor (59) is fixedly connected to the second rotating shaft (58), and a guiding seat (591) is arranged at the bottom of the driving motor (59), and the guiding seat (591) is slidably connected to the inner wall of the reactor body (42).

5. The emulsion polymerization device according to claim 1, wherein, The connecting member (30) includes a sliding seat (31) and a connecting frame (32). One side of the sliding seat (31) is slidably connected to the sliding groove (21), the other side of the sliding seat (31) is hinged to one end of the connecting frame (32), and the other end of the connecting frame (32) is hinged to the polymerization reactor (40).

6. The emulsion polymerization device according to claim 5, characterized in that, The driving assembly (60) includes an adjusting screw (61) rotatably mounted at the bottom of the frame (20), a screw sleeve (62) threadedly connected to the adjusting screw (61), and a second motor (63) for controlling the rotation of the adjusting screw (61). The screw sleeve (62) is slidably mounted at the bottom of the frame (20), and the screw sleeve (62) is fixedly connected to the connecting member (30) connecting the bottom of the polymerization reactor (40).

7. The emulsion polymerization device according to claim 1, wherein, The stirring paddle (70) includes a paddle plate (71). A liquid inlet (72) is provided at the connection between the paddle plate (71) and the first rotating shaft (51) or the second rotating shaft (58). A plurality of liquid outlets (73) are also provided on the paddle plate (71). The liquid outlets (73) are communicated with the liquid inlet (72) through a channel provided inside the paddle plate (71). The paddle plate (71) is communicated with the first rotating shaft (51) or the second rotating shaft (58) through the liquid inlet.

8. The emulsion polymerization apparatus according to claim 7, wherein, The paddle plate (71) includes a horizontal side and an inclined side. The liquid outlet (73) is provided on the inclined side of the paddle plate (71). The stirring paddles (70) on the first rotating shaft (51) and the second rotating shaft (58) are installed in opposite directions so that the inclined sides of the paddle plates (71) on the first rotating shaft (51) and the second rotating shaft (58) are arranged oppositely.

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