A stirring device for stirring a reaction

Abstract

The utility model discloses a kind of stirring devices for stirring reaction, including reaction kettle, the inside of the reaction kettle is provided with stirring blade, the side of stirring blade is provided with gear box, the inside of gear box is provided with gear set for changing the angle of stirring blade, the upper of reaction kettle is provided with the first driving mechanism for driving the rotation of stirring blade and gear box, and the second driving mechanism of driving gear set inside gear rotation, the utility model is rotated in reaction kettle by first motor driving gear box, combination rod and stirring blade, second motor can drive stirring blade to change angle, so that the angle of stirring blade can be dynamically adjusted angle according to the viscosity variation of reaction kettle inside mixed solution, to reach optimal stirring efficiency and energy consumption control, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stirring reactions, and in particular to a stirring device for stirring reactions. Background Technology

[0002] Stirred reaction refers to the process in which materials within a reaction system are forcibly driven by mechanical stirring devices (such as stirring paddles, impellers, etc.) during chemical reactions, biological fermentation, or physical mixing, so as to achieve full contact of reactants, temperature homogenization, and interphase mass and heat transfer. Its core purpose is to eliminate concentration gradients, temperature gradients, and phase separation, thereby improving reaction efficiency and product quality.

[0003] Existing stirring devices rely on a motor to drive stirring blades through a rotating shaft to stir inside the reactor. The angle of the stirring blades is fixed, so that the angle between the stirring blades and the axis of the rotating shaft is fixed. However, different stirring blade angles are suitable for mixing solutions of different viscosities. For example, a smaller blade angle (such as 10°~30°) can generate strong axial flow, causing the fluid to circulate in the vertical direction of the stirrer. This flow mode is particularly suitable for mixing high-viscosity fluids because axial flow helps to break down viscous resistance and make the material more evenly distributed. On the other hand, a larger blade angle (such as 60°~90°) will generate strong radial flow, causing the fluid to form turbulence in the horizontal direction of the stirrer. This flow mode performs well in mixing low-viscosity fluids because radial flow can quickly disperse the material, thereby improving mixing efficiency. Simultaneously, when high molecular weight polymers (such as polyvinyl alcohol) dissolve in a solvent, their molecular chains often extend and become entangled with the solvent through hydrogen bonds or van der Waals forces. This process significantly increases the flow resistance of the solution, causing the viscosity to gradually increase with stirring. For such high-viscosity fluids, if a large-angle stirring blade is used for mixing, the power unit (such as an electric motor) driving the stirring blade needs to provide greater power to overcome the resistance, resulting in a significant increase in energy consumption. Existing stirring devices typically use stirring blades with a fixed angle, which cannot dynamically adjust the angle according to changes in fluid viscosity to achieve optimal stirring efficiency and energy consumption control.

[0004] To address this problem, a stirring device for stirring reactions is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a stirring device for stirring reactions, which solves the problem mentioned in the background art that existing stirring devices usually use stirring blades with a fixed angle, and cannot dynamically adjust the angle according to changes in fluid viscosity to achieve optimal stirring efficiency and energy consumption control. The technical solution of this invention provides a solution that is significantly different from the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A stirring device for stirring a reaction includes a reaction vessel, an internal stirring blade, a gearbox on one side of the stirring blade, a gear set inside the gearbox for changing the angle of the stirring blade, a first drive mechanism for driving the stirring blade and the gearbox to rotate, and a second drive mechanism for driving the gears inside the gear set to rotate, all located above the reaction vessel.

[0007] Preferably, the reactor is provided with a top plate, the gearbox is provided with a positioning block, the positioning block is provided with a connecting rod, both ends of the connecting rod extend to the outside of the gearbox, and both ends of the connecting rod are provided with a stop block, and the stirring blade is installed on the connecting rod.

[0008] Preferably, a rotating drum is provided on the top of the gearbox, the upper end of the rotating drum extends to the top plate, and a tray is provided on the upper end of the rotating drum. The first drive mechanism includes a first motor, a first gear and a second gear. The first motor is fixed on the top plate, the first gear is connected to the first motor shaft, the first gear and the second gear mesh, and the second gear is mounted on the rotating drum. Both the first gear and the second gear are bevel gears.

[0009] Preferably, the gear set includes a power gear and a transmission gear, which mesh with each other. A turntable is provided on one side of the gearbox. Both the transmission gear and the turntable are mounted on a connecting rod. The transmission gear and the turntable are connected by a collar. One end of the stirring blade is connected to the turntable.

[0010] Preferably, a rotating shaft is provided on the top of the power gear, the rotating shaft is located inside the rotating drum, and the upper end of the rotating shaft extends to the top of the tray. The second drive mechanism is a second motor, which is mounted on the tray by a bracket and is connected to the upper end of the rotating shaft.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention uses a first motor to drive a gearbox, connecting rod, and stirring blades to rotate in a reaction vessel. A second motor can drive the stirring blades to change their angle, allowing the stirring blade angle to be dynamically adjusted according to the viscosity changes of the mixture inside the reaction vessel, thereby achieving optimal stirring efficiency and energy consumption control and improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of a stirring device used for stirring reactions; Figure 2 This is a schematic diagram of the reactor in a stirring device used for stirring reactions; Figure 3 This is a schematic diagram of the structure of the stirring blades in a stirring device used for stirring reactions; Figure 4 This is a schematic diagram of the connecting rod in a stirring device used for stirring reactions.

[0013] In the diagram: 1. Reactor; 101. Top plate; 2. Gearbox; 201. Rotary drum; 2011. Tray; 202. Positioning block; 3. First motor; 301. First gear; 302. Second gear; 4. Second motor; 401. Support; 5. Rotary shaft; 501. Power gear; 6. Stirring blade; 601. Turntable; 602. Transmission gear; 603. Collar; 7. Connecting rod; 701. Stop block. Detailed Implementation

[0014] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4In this utility model, a stirring device for stirring a reaction includes a reaction vessel 1, characterized in that: a stirring blade 6 is provided inside the reaction vessel 1, a gearbox 2 is provided on one side of the stirring blade 6, a power gear 501, a transmission gear 602 and a positioning block 202 are provided inside the gearbox 2, and a first motor 3 and a second motor 4 are provided above the reaction vessel 1.

[0018] The reactor 1 has a pipe for discharging liquid at the bottom and a top plate 101 at the top. The top plate 101 has a pipe for adding materials and solutions. The gearbox 2 has a positioning block 202 inside and a connecting rod 7 inside. Both ends of the connecting rod 7 extend to the outside of the gearbox 2 and both ends of the connecting rod 7 have a stop block 701. The stirring blade 6 is installed on the connecting rod 7 and the stirring blade 6 is connected to the connecting rod 7 by a bearing.

[0019] Example 1: Please refer to Figure 1-4 In this embodiment of the present invention, a stirring device for stirring reaction is provided, wherein a rotating drum 201 is provided on the top of the gearbox 2, the upper end of the rotating drum 201 extends above the top plate 101, and a tray 2011 is provided on the upper end of the rotating drum 201. A first motor 3 is fixed on the top plate 101, a first gear 301 is connected to the shaft of the first motor 3, the first gear 301 and the second gear 302 mesh, the second gear 302 is mounted on the rotating drum 201, and both the first gear 301 and the second gear 302 are bevel gears.

[0020] A turntable 601 is provided on one side of the gearbox 2. The transmission gear 602 and the turntable 601 are both mounted on the connecting rod 7. The transmission gear 602 and the turntable 601 are connected by a collar 603. A sealing ring is provided between the collar 603 and the connecting rod 7. A sealing ring is provided between the gearbox 2 and the collar 603. One end of the stirring blade 6 is connected to the turntable 601. The power gear 501 and the transmission gear 602 mesh. Both the power gear 501 and the transmission gear 602 are bevel gears. A rotating shaft 5 is provided on the top of the power gear 501. The rotating shaft 5 is located inside the rotating drum 201. The upper end of the rotating shaft 5 extends to the top of the tray 2011. The second motor 4 is mounted on the tray 2011 through a bracket 401. The second motor 4 is connected to the upper end of the rotating shaft 5.

[0021] After polyvinyl alcohol and solvent (water) are added to the reactor 1, the first motor 3 sequentially drives the first gear 301, the second gear 302, the rotating drum 201, the gearbox 2, the connecting rod 7, and the stirring blade 6 to rotate. Since the viscosity of the fluid inside the reactor 1 is low at this time, the angle between the stirring blade 6 and the axis is 60°, which generates strong turbulence and shear force when the stirring blade 6 rotates. Polyvinyl alcohol can be quickly dispersed in the solvent. As the stirring time increases, the viscosity of the mixed fluid formed by the stirring of polyvinyl alcohol and solvent gradually increases. At this time, the second motor 4 sequentially drives the rotating shaft 5, the power gear 501, the transmission gear 602, and the turntable 601 to rotate. The turntable 601 drives the stirring blade 6 to rotate around the connecting rod 7, thereby changing the angle between the stirring blade 6 and the axis to 30°. This causes the stirring blade 6 to push the mixed fluid inside the reactor 1 to circulate up and down along the axial direction when it rotates, avoiding local accumulation and thus improving the stirring and mixing efficiency.

[0022] The working principle of this utility model is as follows: the first motor 3 drives the stirring blade 6 to rotate inside the reactor 1, and the second motor 4 controls the angle of the stirring blade 6 inside the reactor 1. The angle of the stirring blade 6 can be dynamically adjusted according to the viscosity change of the mixture inside the reactor 1 to achieve optimal stirring efficiency and energy consumption control, thereby improving production efficiency.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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. A stirring apparatus for stirring a reaction, comprising a reaction vessel (1), characterized in that: The reactor (1) is equipped with a stirring blade (6) inside. A gearbox (2) is provided on one side of the stirring blade (6). A gear set for changing the angle of the stirring blade (6) is provided inside the gearbox (2). A first driving mechanism for driving the stirring blade (6) and the gearbox (2) to rotate is provided above the reactor (1), as well as a second driving mechanism for driving the gears inside the gear set to rotate.

2. The stirring device for stirring a reaction according to claim 1, characterized in that: The reactor (1) is provided with a top plate (101), the gearbox (2) is provided with a positioning block (202), the positioning block (202) is provided with a connecting rod (7), both ends of the connecting rod (7) extend to the outside of the gearbox (2), and both ends of the connecting rod (7) are provided with a stop block (701), and the stirring blade (6) is installed on the connecting rod (7).

3. The stirring device for stirring a reaction according to claim 1, characterized in that: The gearbox (2) is provided with a rotating drum (201) on its upper end. The upper end of the rotating drum (201) extends above the top plate (101), and a tray (2011) is provided on the upper end of the rotating drum (201). The first drive mechanism includes a first motor (3), a first gear (301) and a second gear (302). The first motor (3) is fixed on the top plate (101). The first gear (301) is connected to the shaft of the first motor (3). The first gear (301) and the second gear (302) mesh. The second gear (302) is mounted on the rotating drum (201). Both the first gear (301) and the second gear (302) are bevel gears.

4. The stirring apparatus for stirring a reaction according to claim 1, characterized in that: The gear set includes a power gear (501) and a transmission gear (602), which mesh with each other. A turntable (601) is provided on one side of the gearbox (2). The transmission gear (602) and the turntable (601) are both mounted on the connecting rod (7). The transmission gear (602) and the turntable (601) are connected by a collar (603). One end of the stirring blade (6) is connected to the turntable (601).

5. A stirring device for stirring a reaction according to claim 4, characterized in that: The power gear (501) is provided with a rotating shaft (5), which is located inside the rotating drum (201). The upper end of the rotating shaft (5) extends to the top of the tray (2011). The second drive mechanism is a second motor (4), which is mounted on the tray (2011) through a bracket (401). The second motor (4) is connected to the upper end of the rotating shaft (5).

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