Improved stirring kettle baffle

Abstract

The utility model relates to the technical field of stirring kettle baffles, in particular to an improved stirring kettle baffle which comprises a kettle body, a plurality of groups of mounting brackets are fixedly mounted on the inner circumferential wall of the kettle body, a baffle main body is fixedly mounted on each group of mounting brackets, a flow guide hole is formed in each baffle main body, and a flow guide cone is arranged on each baffle main body. According to the improved stirring kettle baffle, the flow guide cone and the flow guide holes are formed in the baffle body, the axial mixing effect of stirring can be improved, stirring power consumption can be reduced, a stirring dead zone on the rear portion of the baffle can be improved, in addition, agglomerated powder is promoted to be impacted and broken through impact and collision between the agglomerated powder in liquid and the flow guide cone, and the stirring effect is improved. The effect of improving the stirring shearing force can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of baffle technology for stirred tanks, specifically an improved baffle for stirred tanks. Background Technology

[0002] A stirred tank reactor, also known as a stirred vessel reactor, consists of a stirrer and a vessel body. The stirrer includes a drive mechanism, a stirring shaft (including a shaft seal), and an impeller (stirring blade); the vessel body includes a cylindrical shell, jacket and internal components, coils, and a flow guide tube, etc. Industrial stirred tank reactors can be divided into two main categories according to the phase of the reactants: homogeneous reactors and heterogeneous reactors. Generally, a frame-type stirrer is used to mix the liquids.

[0003] However, existing stirred tanks exhibit poor axial mixing performance when mixing liquids containing fillers or high viscosity, and powder agglomeration easily occurs in the liquid, resulting in uneven mixing between the upper and lower layers of the stirred tank. To improve the shear force and axial mixing effect of the agitator, it is necessary to increase the agitator's speed and torque, which significantly increases energy consumption. Therefore, we propose an improved stirred tank baffle. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide an improved baffle for a stirred tank, which solves the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An improved stirrer baffle includes a vessel body, on which multiple sets of mounting brackets are fixedly installed. Each set of mounting brackets is fixedly installed with a baffle body. The baffle body has a flow guide hole and a flow guide cone.

[0007] Preferably, the number of the guide holes and the number of the guide cones are both multiple, and the multiple guide holes and the multiple guide cones are distributed in a straight line at equal distances along the length direction of the baffle body, and the guide holes and the guide cones are spaced apart.

[0008] Preferably, the guide cone is a cone.

[0009] Preferably, the flow guide cones are of an odd number, with the middle flow guide cone being a straight circular cone and the two side flow guide cones being oblique circular cones.

[0010] Preferably, the oblique cone is rotatably connected to the baffle body via a connecting component.

[0011] Preferably, the connecting component includes a central shaft, the periphery of which is rotatably connected to the inner wall of the baffle body, one end of which is fixedly connected to one end of the inclined cone, and a limiting ring is fixedly connected to the periphery of the central shaft, the limiting ring being rotatably connected to the inner wall of the baffle body.

[0012] By employing the above technical solution, this utility model provides an improved baffle for a stirred tank. It possesses at least the following beneficial effects:

[0013] (1) The improved stirring vessel baffle, by setting a guide cone and a guide hole on the baffle body, can improve the axial mixing effect of stirring, reduce stirring power consumption, and improve the stirring dead zone at the rear of the baffle. In addition, by the impact collision between the agglomerated powder in the liquid and the guide cone, the agglomerated powder is promoted to be crushed by impact, which can achieve the effect of improving the stirring shear force.

[0014] (2) The improved stirring vessel baffle, by setting an inclined cone, can promote the rotation of the inclined cone when the fluid impacts the surface of the inclined cone, so that the orientation of the apex of the inclined cone changes continuously, thereby causing the fluid around it to move randomly, so as to further promote the fluid mixing effect. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0016] Figure 1 This is a cross-sectional view of the overall structure of Embodiment 1 of this utility model;

[0017] Figure 2 This is a side view of the baffle body and the guide cone in Embodiment 1 of this utility model;

[0018] Figure 3 This is a perspective view of the baffle body and the guide cone in Embodiment 1 of this utility model;

[0019] Figure 4 This is a perspective view of the baffle body and the guide cone in Embodiment 2 of this utility model;

[0020] Figure 5 This is a schematic diagram of the limiting ring and the central axis in Embodiment 2 of this utility model.

[0021] In the diagram: 1. Vessel body; 2. Baffle body; 3. Flow guide hole; 4. Flow guide cone; 5. Mounting bracket; 6. Central shaft; 7. Limiting ring; 8. Stirring shaft; 9. Drive motor. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Please see Figures 1-3 This embodiment provides a technical solution:

[0025] An improved stirred tank baffle includes a tank body 1 for holding liquid. A drive motor 9 is fixedly installed at the top of the tank body 1, and a stirring shaft 8 is fixedly installed at the output end of the drive motor 9. A stirring paddle is connected to the stirring shaft 8 to provide stirring power for the liquid inside the tank. Multiple sets of mounting brackets 5 are fixedly installed on the inner peripheral wall of the tank body 1. Each set of mounting brackets 5 is fixedly installed with a baffle body 2. By setting the baffle body 2, the fluid can be made to move radially and axially, thereby improving mixing efficiency and mixing effect. The multiple sets of mounting brackets 5 are distributed in a circular array around the axis of the tank body 1, so that the baffle body 2 is evenly distributed inside the tank body 1.

[0026] However, in mixing conditions involving fillers or high-viscosity liquids, the axial mixing effect of the stirring shaft 8 is poor, resulting in uneven mixing between the upper and lower layers of the stirred tank. To improve this situation, in this embodiment, the baffle body 2 is provided with multiple guide holes 3, which are evenly distributed in a straight line along the length of the baffle body 2. By setting the guide holes 3, the impact area between the baffle body 2 and the liquid can be reduced, thereby reducing the stirring power consumption. After adding the guide holes 3, some liquid is allowed to flow through the guide holes 3 to the back area of ​​the baffle body 2, reducing the stirring dead zone on the back of the baffle body 2, thereby enhancing the degree of material mixing.

[0027] In addition, multiple guide cones 4 are provided on the baffle body 2, and these guide cones 4 are distributed at equal intervals in a straight line along the length of the baffle body 2. The liquid impacts the guide cones 4 along the stirring direction, forcing the liquid to disperse in all directions, and then impacts and mixes with the liquid in the guide holes 3, improving the mixing effect. Simultaneously, the liquid impacting the guide cones 4 gains upper and lower kinetic energy through the cone surface, further enhancing the axial mixing effect. Adding guide cones 4, in stirring conditions containing fillers, promotes the impact and collision of agglomerated powder with the guide cones 4 during the feeding or mixing stage, promoting the breaking up of agglomerated powder and improving the stirring shear force. Furthermore, the guide holes 3 and guide cones 4 are spaced apart, allowing the liquid flowing from the guide cones 4 to collide and mix with the liquid passing through the guide holes 3, further enhancing the mixing effect.

[0028] Example 2

[0029] Based on Example 1, please combine with Figures 4-5 As shown, there are an odd number of guide cones 4. The middle guide cone 4 is a straight circular cone, while the two side guide cones 4 are oblique circular cones. The line connecting the apex of the oblique cone to the center of the bottom surface is not perpendicular to the bottom surface. The oblique cone angle allows the fluid to diffuse to different degrees in different directions after impacting the surface of the guide cone 4. The oblique cones are rotatably connected to the baffle body 2 via connecting parts. When the fluid impacts the surface of the oblique cone, it causes the oblique cone to rotate. With the continuous stirring of the stirring shaft 8, the angle of the oblique cone changes continuously, causing the fluid around it to move randomly, further promoting the fluid mixing effect.

[0030] Specifically, the connecting component includes a cylindrical central shaft 6, the periphery of which is rotatably connected to the inner wall of the baffle body 2, one end of which passes through the baffle body 2 and is fixedly connected to one end of the inclined cone, and a limiting ring 7 is fixedly connected to the periphery of the central shaft 6. The limiting ring 7 is located inside the baffle body 2 and is rotatably connected to the inner wall of the baffle body 2, and is used to limit the central shaft 6 and the inclined cone, so that the inclined cone can only rotate relative to the baffle body 2.

[0031] In use, the improved stirring vessel baffle of this utility model, after the vessel body 1 is filled with liquid, the drive motor 9 is turned on, and the drive motor 9 drives the stirring shaft 8 to rotate, so that the liquid gains power and the direction of movement is perpendicular to the baffle body 2. When the liquid impacts the baffle body 2 vertically, some of the liquid passes through the guide hole 3 and reaches the back area of ​​the baffle body 2. Because the back of the baffle body 2 is in a low-pressure area, the liquid passing through the hollow guide hole 3 is diffused and mixed with the liquid on the back of the baffle body 2, reducing the stirring dead zone on the back of the baffle body 2. When the liquid impacts the guide cone 4, the liquid flow direction changes from the original direction of movement perpendicular to the baffle body 2 to a scattered flow. The liquid with an up-down flow direction (axial direction) is fully mixed with the liquid passing through the guide hole 3, and the liquid with a left-right flow direction (radial direction) is fully mixed with the liquid that has not been impacted by the baffle body 2. When the agglomerated powder in the liquid impacts the guide cone 4, the top of the guide cone 4 breaks and shears the agglomerated powder, promoting powder dispersion.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved baffle for a stirred tank, comprising a tank body (1), characterized in that, Multiple sets of mounting brackets (5) are fixedly installed on the inner peripheral wall of the vessel body (1). Each set of mounting brackets (5) is fixedly installed with a baffle body (2). The baffle body (2) is provided with a flow guide hole (3) and a flow guide cone (4).

2. The improved stirrer baffle according to claim 1, characterized in that, The number of the guide holes (3) and the number of the guide cones (4) are both multiple. The multiple guide holes (3) and the multiple guide cones (4) are distributed at equal distances in a straight line along the length direction of the baffle body (2), and the guide holes (3) and the guide cones (4) are spaced apart.

3. The improved stirrer baffle according to claim 1, characterized in that, The flow guide cone (4) is a cone.

4. The improved stirrer baffle according to claim 1, characterized in that, The flow guide cones (4) are of an odd number, with the middle flow guide cone (4) being a straight circular cone and the two side flow guide cones (4) being oblique circular cones.

5. The improved stirrer baffle according to claim 4, characterized in that, The oblique cone is rotatably connected to the baffle body (2) via a connecting component.

6. The improved stirrer baffle according to claim 5, characterized in that, The connecting component includes a central shaft (6), the periphery of which is rotatably connected to the inner wall of the baffle body (2), one end of which is fixedly connected to one end of the inclined cone, and a limiting ring (7) is fixedly connected to the periphery of the central shaft (6), and the limiting ring (7) is rotatably connected to the inner wall of the baffle body (2).

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