Stirring device

Abstract

The invention relates to the technical field of liquid stirring, in particular to a stirring device. The stirring device comprises a reaction kettle and a stirring shaft, and the stirring shaft is installed in the reaction kettle in a circumferential rotation mode and extends in the axial direction of the reaction kettle; a stirring assembly and a disturbance assembly are arranged on the stirring shaft, the stirring assembly is arranged to be capable of driving a solution in the reaction kettle to circulate in the axial direction of the reaction kettle, and the disturbance assembly is arranged to be capable of disturbing the solution in a circulating state. Wherein the stirring shaft can drive the stirring assembly to rotate in the circumferential direction, the stirring assembly rotating in the circumferential direction can drive all solutions to circulate between the liquid level of the stirring assembly and the bottom wall of the reaction kettle, and dispersion phase liquid is promoted to be rapidly and evenly mixed in whole continuous phase liquid in the circulation process; the disturbance assembly can disturb the circulating solution to enable the solution to generate local turbulence, so that relative movement is generated between the dispersed phase liquid and the continuous phase liquid, and the dispersed phase liquid is further quickly and uniformly mixed in the whole continuous phase liquid.

Description

Technical Field

[0001] The invention relates to the technical field of liquid stirring, in particular to a stirring device. Background Art

[0002] In the production process of chemical or pharmaceutical fields, it is often necessary to mix two immiscible liquids with a large volume ratio. A large volume ratio means that the volume ratio between the two immiscible liquids is 1 / 10000-1 / 100, in which the small volume of liquid dispersed is the dispersed phase liquid, and the large volume of liquid containing the dispersed phase liquid is the continuous phase liquid.

[0003] The mixing of two immiscible liquids is usually achieved by a stirring device. A conventional stirring device includes a stirring shaft extending vertically and a stirring paddle mounted on the stirring shaft, wherein the length of the stirring paddle extends along the radial direction of the stirring shaft, and the width of the stirring paddle extends along the axial direction of the stirring shaft. The stirring shaft can drive the stirring paddle to rotate circumferentially, and the stirring paddle will cause the dispersed phase liquid to diffuse in all directions, but it is difficult to cause a small volume of the dispersed phase liquid to diffuse downward or upward and then quickly and evenly mix in the entire large volume of the continuous phase liquid. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem in the prior art that two immiscible liquids are difficult to mix quickly and uniformly at a large volume ratio.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a stirring device, which includes a reactor and a stirring shaft. The stirring shaft is installed in the reactor so as to be rotatable in a circumferential direction, and the stirring shaft extends along the axial direction of the reactor. A stirring component and a disturbance component are provided on the stirring shaft. The stirring component is configured to drive the solution in the reactor to circulate in the axial direction of the reactor, and the disturbance component is configured to disturb the solution in a circulating state.

[0006] In some embodiments, the stirring device includes a plurality of disturbance components and a plurality of stirring components, and the plurality of disturbance components and the plurality of stirring components are alternately and spacedly distributed along the axial direction of the stirring shaft.

[0007] In some embodiments, the stirring device includes three disturbance components, namely, a first disturbance component, a second disturbance component and a third disturbance component distributed in sequence from top to bottom; the stirring device includes three stirring components, namely, a first stirring component, a second stirring component and a third stirring component distributed in sequence from top to bottom, and the first stirring component is located between the first disturbance component and the second disturbance component.

[0008] In some embodiments, the first stirring component and the second stirring component respectively include a plurality of first stirring paddles configured as sheet-like blades, the head end of the first stirring paddle in the length direction is fixedly connected to the stirring shaft, the length of the first stirring paddle extends along the horizontal direction, and all the first stirring paddles are distributed at circumferential intervals around the stirring shaft; the first stirring paddle has a front side and a back side, the front side of the first stirring paddle faces the bottom wall of the reactor, and the angle between the front side of the first stirring paddle and the horizontal plane is an acute angle.

[0009] In some embodiments, the angle between the front face of the first stirring paddle and the horizontal plane is between 45° and 70°; and / or the length of the first stirring paddle is 0.33-0.5 times the inner radius of the reactor, and the width of the first stirring paddle is 0.125-0.25 times the inner radius of the reactor.

[0010] In some embodiments, the third stirring assembly includes a plurality of second stirring paddles configured as sheet-like blades, the head end of the second stirring paddle in the length direction is fixedly connected to the stirring shaft, the length of the second stirring paddle extends in the horizontal direction, the width of the second stirring paddle extends in the vertical direction, all the second stirring paddles are circumferentially spaced around the stirring shaft, and there is a consistent vertical spacing between the bottom edge of the second stirring paddle and the inner side surface of the bottom wall of the reactor.

[0011] In some embodiments, the disturbance assembly includes a plurality of disturbance components configured as spiral blades, the head end of the disturbance component in the length direction is fixedly connected to the stirring shaft, the length of the disturbance component extends along the horizontal direction, and all the disturbance components are distributed at circumferential intervals around the stirring shaft.

[0012] In some embodiments, the length of the disturbance component is 0.35-0.6 times the inner radius of the reactor.

[0013] In some embodiments, the stirring device also includes a feed pipe, which is inserted into the top wall of the reactor, and the end of the feed pipe is located in the reactor; in the radial direction of the stirring shaft, the distance between the end of the feed pipe and the axis of the stirring shaft is 0.33 to 0.6 times the inner radius of the reactor.

[0014] In some embodiments, a plurality of baffles are provided on the inner side wall of the reactor and are spaced apart circumferentially around the stirring shaft. The length direction of the baffles extends along the axial direction of the reactor, and the width direction of the baffles extends along the radial direction of the stirring shaft.

[0015] The above technical solution of the present invention has the following technical effects:

[0016] The stirring shaft can drive the stirring component to rotate circumferentially, and the circumferentially rotating stirring component can drive all solutions to circulate back and forth between its liquid surface and the bottom wall of the reactor, thereby promoting the dispersed phase liquid to be quickly and evenly mixed in the entire continuous phase liquid during the circulation process; and the disturbance component can disturb the circulating solution to cause local turbulence in the solution, so that the dispersed phase liquid and the continuous phase liquid produce relative movement, further promoting the dispersed phase liquid to be quickly and evenly mixed in the entire continuous phase liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of a stirring device in one embodiment of the present invention;

[0018] Figure 2 Schematic diagram of the distribution of the first stirring paddle, the second stirring paddle and the disturbance component in one embodiment of the present invention.

[0019] Description of Reference Numerals

[0020] 1. Reactor; 2. Stirring shaft; 3. Stirring assembly; 31. First stirring assembly; 32. Second stirring assembly; 33. Third stirring assembly; 34. First stirring paddle; 35. Second stirring paddle; 4. Disturbance assembly; 41. First disturbance assembly; 42. Second disturbance assembly; 43. Third disturbance assembly; 44. Disturbance component; 5. Feed pipe; 6. Baffle. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention, rather than to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0022] like Figure 1 to Figure 2 As shown, the present invention provides a stirring device, which includes a reactor 1 and a stirring shaft 2. The stirring shaft 2 is rotatably installed in the reactor 1, and the stirring shaft 2 extends along the axial direction of the reactor 1. A stirring component 3 and a disturbance component 4 are provided on the stirring shaft 2. The stirring component 3 is configured to drive the solution in the reactor 1 to circulate in the axial direction of the reactor 1, and the disturbance component 4 is configured to disturb the solution in a circulating state.

[0023] Specifically, the stirring shaft 2 can drive the stirring component 3 to rotate circumferentially, and the circumferentially rotating stirring component 3 can drive all solutions to circulate back and forth between its liquid surface and the bottom wall of the reactor 1, thereby promoting the dispersed phase liquid to be quickly and evenly mixed in the entire continuous phase liquid during the circulation process; and the disturbance component 4 can disturb the circulating solution to cause the solution to produce local turbulence, so that the dispersed phase liquid and the continuous phase liquid produce relative movement, further promoting the dispersed phase liquid to be quickly and evenly mixed in the entire continuous phase liquid.

[0024] In some embodiments, the stirring device further comprises a driving device, such as a driving motor. The driving device can drive the stirring shaft 2 to rotate circumferentially, thereby rotating the stirring assembly 3. The driving device can be installed on the top of the reaction kettle 1.

[0025] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the stirring device includes a plurality of disturbance components 4 and a plurality of stirring components 3 , and the plurality of disturbance components 4 and the plurality of stirring components 3 are alternately and spacedly distributed along the axial direction of the stirring shaft 2 .

[0026] Specifically, two adjacent groups of stirring components 3 can form a relay for stirring and mixing the solution. The upper stirring component 3 stirs and mixes and drives the solution to flow downward, while the lower stirring component 3 can continue to stir and mix the solution and drive the solution to continue to flow downward, accelerating the circulation of the solution in the reactor 1, so that the dispersed phase liquid is evenly mixed in the continuous phase liquid as quickly as possible. However, the optimal range of action of each group of stirring components 3 is limited, and the stirring and mixing effect of a part of the solution located between two adjacent groups of stirring components 3 may not be good, but the disturbance component 4 located between two adjacent groups of stirring components 3 can form a disturbance to this part of the solution, so that the stirring and mixing of the two adjacent groups of stirring components 3 are effectively connected, which helps to promote the full mixing of the two liquids.

[0027] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the stirring device includes three disturbance components 4, which are respectively a first disturbance component 41, a second disturbance component 42 and a third disturbance component 43, which are sequentially distributed from top to bottom. The stirring device includes three stirring components 3, which are respectively a first stirring component 31, a second stirring component 32 and a third stirring component 33, which are sequentially distributed from top to bottom. The first stirring component 31 is located between the first disturbance component 41 and the second disturbance component 42.

[0028] Specifically, there is usually a certain distance between the first stirring component 31 and the liquid surface of the solution, so that the first stirring component 31 can stir and mix the solutions above and below it at the same time. Sometimes the density of the dispersed phase liquid is small, so that the dispersed phase liquid will be suspended at the liquid surface of the continuous phase liquid. Since there is a certain distance between the first stirring component 31 and the dispersed phase liquid, the first stirring component 31 may not be able to quickly stir and mix the dispersed phase liquid. However, the first disturbance component 41 can disturb these dispersed phase liquids so that they are quickly mixed to a lower position of the continuous phase liquid, and the first stirring component 31 can form a relay with the first disturbance component 41, and the first stirring component 31 can further stir and mix the dispersed phase liquid flowing downward. In addition, sometimes the density of the dispersed phase liquid is large, and these dispersed phase liquids will settle at the bottom of the reactor 1, but the third stirring component 33 can stir and mix the solution at the bottom of the reactor 1, thereby improving the mixing efficiency of the two liquids.

[0029] In some embodiments, the distance between the first stirring component 31 and the second stirring component 32 is greater than the distance between the second stirring component 32 and the third stirring component 33. The deeper the solution is, the more difficult it is to stir, so reducing the distance between the second stirring component 32 and the third stirring component 33 helps to increase the force driving the solution to circulate.

[0030] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the first stirring assembly 31 and the second stirring assembly 32 respectively include a plurality of first stirring paddles 34 configured as sheet-like blades, the head end of the first stirring paddle 34 in the length direction is fixedly connected to the stirring shaft 2, the length of the first stirring paddle 34 extends in the horizontal direction, and all the first stirring paddles 34 are distributed at intervals around the circumference of the stirring shaft 2; the first stirring paddle 34 has a front side and a back side, the front side of the first stirring paddle 34 faces the bottom wall of the reactor 1, and the angle between the front side of the first stirring paddle 34 and the horizontal plane is an acute angle. Along the rotation direction of the stirring shaft 2, the front sides and back sides of all the first stirring paddles 34 are distributed alternately.

[0031] Specifically, the first stirring assembly 31 and the second stirring assembly 32 can respectively include 3-4 first stirring paddles 34 evenly spaced, which not only reduces the driving burden of the driving device, but also can drive and fully stir the solution. The first stirring paddle 34 can be set to a sheet blade in a rectangular or elliptical shape. The front of the first stirring paddle 34 faces obliquely downward, and the back of the first stirring paddle 34 faces obliquely upward. All first stirring paddles 34 have the same inclination angle. For two adjacent first stirring paddles 34, in the rotation direction of the stirring shaft 2, the front of one first stirring paddle 34 faces the back of the other first stirring paddle 34.

[0032] In this embodiment, since the first stirring paddle 34 is disposed at an angle, the front surface of the first stirring paddle 34 can drive the solution around the stirring shaft 2 to descend.

[0033] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the angle between the front surface of the first stirring paddle 34 and the horizontal plane ranges from 45° to 70°.

[0034] Specifically, when the stirring shaft 2 rotates, the front of the first stirring paddle 34 can push the solution to move. The larger the angle between the front of the first stirring paddle 34 and the horizontal plane, the greater the shear force generated by the first stirring paddle 34 for stirring the solution, which is conducive to the full mixing of the two liquids, but the ability of the first stirring paddle 34 to promote the circulation of the solution becomes worse. The smaller the angle between the front of the first stirring paddle 34 and the horizontal plane, the better the ability of the first stirring paddle 34 to promote the circulation of the solution, but the smaller the shear force generated by the first stirring paddle 34 for stirring the solution, which is not conducive to the full mixing of the two liquids. By setting the angle between 45° and 70°, the first stirring paddle 34 can not only generate better shear force, but also better promote the circulation of the solution.

[0035] In some embodiments of the present invention, the length of the first stirring paddle 34 is 0.33-0.5 times the inner radius of the reactor 1 , and the width of the first stirring paddle 34 is 0.125-0.25 times the inner radius of the reactor 1 .

[0036] Specifically, a plurality of vertically spaced stirring components 3 are provided on the stirring shaft 2, and these stirring components 3 can jointly generate a strong force to promote the circulation of the solution. Therefore, the length and width of the first stirring paddle 34 should not be too large to avoid increasing the driving burden of the driving device.

[0037] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the third stirring assembly 33 includes a plurality of second stirring paddles 35 configured as sheet-like blades, the head end of the second stirring paddle 35 in the length direction is fixedly connected to the stirring shaft 2, the length of the second stirring paddle 35 extends in the horizontal direction, the width of the second stirring paddle 35 extends in the vertical direction, and the thickness of the second stirring paddle 35 extends in the horizontal direction. All the second stirring paddles 35 are distributed at intervals around the circumference of the stirring shaft 2, and the bottom edge of the second stirring paddle 35 and the inner side surface of the bottom wall of the reactor 1 have a consistent vertical spacing.

[0038] Specifically, the second stirring paddle 35 can stir and mix the solution at the bottom of the reactor 1, further promoting the rapid mixing of the dispersed phase liquid. Moreover, the first stirring paddle 34 can also cause the solution at the bottom of the reactor 1 to flow to the side wall of the reactor 1, accelerate the circulation of the solution, and promote the rapid mixing of the dispersed phase liquid. In addition, the shape of the bottom side edge of the second stirring paddle 35 is adapted to the shape of the bottom wall of the reactor 1, so that there is a consistent vertical spacing between the bottom side edge of the second stirring paddle 35 and the inner side of the bottom wall of the reactor 1, so that the second stirring paddle 35 can fully stir the bottom of the reactor 1. When the density of the dispersed phase liquid is greater than the density of the continuous phase liquid, the dispersed phase liquid is easy to gather at the bottom of the kettle, but this structure of the second stirring paddle 35 can avoid the dispersed phase liquid with high density from gathering at the bottom of the kettle, or avoid the existence of a dead zone at the bottom of the kettle where no flow exists. For example, the bottom wall of the reactor 1 can be set to a hemispherical shape, and the bottom side edge of the second stirring paddle 35 is set to a circular arc shape. Of course, to avoid increasing the driving burden of the driving device, the number of the second stirring paddles 35 can be 2-3, or even 1. Preferably, two second stirring paddles 35 can be installed on the stirring shaft 2, and the two second stirring paddles 35 can be integrally formed.

[0039] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the disturbance assembly 4 includes a plurality of disturbance components 44 configured as spiral blades, the head end of the disturbance component 44 in the length direction is fixedly connected to the stirring shaft 2, the length of the disturbance component 44 extends in the horizontal direction, and all the disturbance components 44 are distributed at circumferential intervals around the stirring shaft 2.

[0040] Specifically, the number of disturbance components 44 can be 2-4. However, the number of disturbance components 44 can be preferably 2 to reduce the driving burden of the driving device. Of course, all disturbance components 44 are evenly spaced. The disturbance components 44 set as spiral blades have stronger local disturbance ability and can promote the circulation of the solution. Preferably, the disturbance components 44 at different heights are staggered vertically to enhance the disturbance effect.

[0041] In some embodiments of the present invention, the length of the disturbance component 44 is 0.35-0.6 times the inner radius of the reactor 1 .

[0042] Specifically, the disturbance component 44 has a longer length, which helps to improve the local disturbance capability of the disturbance component 44. Moreover, the length of the disturbance component 44 can be greater than the length of the stirring component, so that the disturbance component 44 can fully disturb the area between two adjacent groups of stirring components 3.

[0043] like Figure 1As shown, in some embodiments of the present invention, the stirring device also includes a feed pipe 5, which is passed through the top wall of the reactor 1, and the end of the feed pipe 5 is located in the reactor 1; in the radial direction of the stirring shaft 2, the distance between the end of the feed pipe 5 and the axis of the stirring shaft 2 is 0.33 times to 0.6 times the inner radius of the reactor 1.

[0044] Specifically, the feed pipe 5 is inserted into the reactor 1 at an angle, and the end of the feed pipe 5 is located in the reactor 1, and the head end of the feed pipe 5 is located outside the reactor 1. The horizontal spacing between the end of the feed pipe 5 and the axis of the stirring shaft 2 can be greater than or equal to the length of the first stirring paddle 34, and can be less than or equal to the length of the disturbance component 44. In this way, the dispersed phase liquid entering from the feed pipe 5 can directly fall into the action range of the disturbance component 44, and the flow rate of the solution in the action range is large, which helps to accelerate the full mixing of the dispersed phase liquid.

[0045] In some embodiments, the feed pipe 5 extends obliquely from the end to the head end thereof from bottom to top in a direction away from the stirring shaft 2; in other words, the horizontal distance between the feed pipe 5 and the axis of the stirring shaft 2 gradually increases from the end to the head end thereof. After flowing out of the feed pipe 5, the dispersed phase liquid performs a downward oblique throwing motion, which helps the dispersed phase liquid to fall directly into the action range of the disturbance component 44.

[0046] like Figure 1 As shown, in some embodiments of the present invention, a plurality of baffles 6 are provided on the inner wall of the reactor 1 and are circumferentially spaced around the stirring shaft 2. The length direction of the baffles 6 extends along the axial direction of the reactor 1, and the width direction of the baffles 6 extends along the radial direction of the stirring shaft 2.

[0047] Specifically, under the stirring and pushing of the stirring assembly 3, the fluid in the reactor generates a strong circumferential swirl, and the baffle 6 can disturb the circumferentially flowing solution, which is helpful for the full mixing of the dispersed phase liquid.

[0048] The operation process of the stirring device of the present invention is described in detail below with reference to the accompanying drawings.

[0049] The reactor 1 contains a continuous phase liquid, and the dispersed phase liquid is applied to the reactor 1 through a feed pipe 5. The stirring shaft 2 drives the disturbance component 4 and the stirring component 3 to rotate circumferentially. The first disturbance component 41 disturbs the dispersed phase liquid and the continuous phase liquid, prompting the dispersed phase liquid to move toward the first stirring component 31. The first stirring component 31 drives the solution to move downward to the second stirring component 32, and the second disturbance component 42 between the first stirring component 31 and the second stirring component 32 can disturb the solution to form a turbulent environment that promotes the full mixing of the two liquids. The second stirring component 32 drives the solution to move downward to the third stirring component 33, and the third disturbance component 43 between the second stirring component 32 and the third stirring component 33 can disturb the solution to form a turbulent environment that promotes the full mixing of the two liquids. The third stirring component 33 can stir the solution and drive the solution to move toward the side wall of the reactor 1 at the same time, and the solution moves upward at the side wall of the reactor 1. The solution circulates back and forth between its liquid surface and the bottom wall of the reactor 1, thereby achieving rapid and uniform mixing of the two immiscible liquids.

[0050] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A stirring device, characterized in that: The invention comprises a reaction kettle (1) and a stirring shaft (2), wherein the stirring shaft (2) is rotatably mounted in the reaction kettle (1) and extends in the axial direction of the reaction kettle (1); The stirring shaft (2) is provided with a stirring component (3) and a disturbance component (4); the stirring component (3) is configured to drive the solution in the reactor (1) to circulate in the axial direction of the reactor (1); and the disturbance component (4) is configured to disturb the solution in a circulating state.

2. The stirring device according to claim 1, characterized in that: The stirring device comprises a plurality of the disturbance components (4) and a plurality of the stirring components (3), and the plurality of the disturbance components (4) and the plurality of the stirring components (3) are alternately and spacedly distributed along the axial direction of the stirring shaft (2).

3. The stirring device according to claim 2, characterized in that: The stirring device comprises three disturbance components (4), which are respectively a first disturbance component (41), a second disturbance component (42) and a third disturbance component (43) which are sequentially distributed from top to bottom; The stirring device comprises three stirring components (3), which are a first stirring component (31), a second stirring component (32) and a third stirring component (33) which are arranged in sequence from top to bottom; the first stirring component (31) is located between the first disturbance component (41) and the second disturbance component (42).

4. The stirring device according to claim 3, characterized in that: The first stirring assembly (31) and the second stirring assembly (32) respectively comprise a plurality of first stirring paddles (34) configured as sheet-like blades, the first ends of the first stirring paddles (34) in the length direction are fixedly connected to the stirring shaft (2), the length of the first stirring paddles (34) extends in the horizontal direction, and all the first stirring paddles (34) are distributed at intervals in the circumferential direction around the stirring shaft (2); The first stirring paddle (34) has a front side and a back side, the front side of the first stirring paddle (34) faces the bottom wall of the reaction kettle (1), and the angle between the front side of the first stirring paddle (34) and the horizontal plane is an acute angle.

5. The stirring device according to claim 4, characterized in that: The angle between the front face of the first stirring paddle (34) and the horizontal plane is in the range of 45° to 70°; and / or The length of the first stirring paddle (34) is 0.33-0.5 times the inner radius of the reaction kettle (1), and the width of the first stirring paddle (34) is 0.125-0.25 times the inner radius of the reaction kettle (1).

6. The stirring device according to claim 3, characterized in that: The third stirring assembly (33) comprises a plurality of second stirring paddles (35) configured as sheet-like blades, the head end of the second stirring paddle (35) in the length direction is fixedly connected to the stirring shaft (2), the length of the second stirring paddle (35) extends in the horizontal direction, the width of the second stirring paddle (35) extends in the vertical direction, all the second stirring paddles (35) are distributed at intervals around the circumference of the stirring shaft (2), and the bottom edge of the second stirring paddle (35) and the inner side surface of the bottom wall of the reactor (1) have a consistent vertical spacing.

7. The stirring device according to claim 2, characterized in that: The disturbance component (4) comprises a plurality of disturbance components (44) arranged as spiral blades, the head end of the disturbance component (44) in the length direction is fixedly connected to the stirring shaft (2), the length of the disturbance component (44) extends in the horizontal direction, and all the disturbance components (44) are distributed at intervals in the circumferential direction around the stirring shaft (2).

8. The stirring device according to claim 7, characterized in that: The length of the disturbance component (44) is 0.35-0.6 times the inner radius of the reactor (1).

9. The stirring device according to any one of claims 1 to 8, characterized in that: The stirring device further comprises a feeding pipe (5), wherein the feeding pipe (5) is inserted into the top wall of the reaction kettle (1), and the end of the feeding pipe (5) is located in the reaction kettle (1); In the radial direction of the stirring shaft (2), the distance between the end of the feeding pipe (5) and the axis of the stirring shaft (2) is 0.33 to 0.6 times the inner radius of the reaction kettle (1).

10. The stirring device according to any one of claims 1 to 8, characterized in that: A plurality of baffles (6) are provided on the inner side wall of the reaction kettle (1) and are spaced apart circumferentially around the stirring shaft (2); the length direction of the baffles (6) extends along the axial direction of the reaction kettle (1), and the width direction of the baffles (6) extends along the radial direction of the stirring shaft (2).

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