A stirring device for a reaction kettle
By designing a stirring device including an upper stirrer, a lower stirrer and a flow guide cylinder, the problem of uneven stirring of slurry with high solids content and poor fluidity in the prior art is solved, and the effect of efficient shear dispersion and good slurry flow channel is achieved.
Patent Information
- Application Number
- CN202421353827.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-14
AI Technical Summary
When the stirring device of the existing reactor treats slurries with high solids content and poor fluidity, there are problems such as insufficient shear force, disordered runners and uneven stirring.
A stirring device including an upper stirrer, a lower stirrer and a flow guide cylinder is designed. The upper and lower stirrer rotates through the agitator shaft. The slurry in the flow guide cylinder forms a downward mixing liquid flow channel under the action of the upper stirrer, and stirs again under the action of the lower stirrer to form a circulating flow to ensure sufficient mixing of the slurry.
It achieves a stirring effect with efficient shear dispersion, good slurry runner and no dead corners, ensuring full mixing and stirring uniformity of the slurry.
Smart Images
Figure CN222739136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chemical equipment, in particular to a stirring device for a reaction kettle. Background Art
[0002] A chemical reactor is broadly understood as a container for physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process are realized. When chemical materials need to be mixed and stirred, they are placed in the reactor to produce a chemical reaction. The agitator is an important component in the reactor. Whether the material can react fully depends on whether the agitator can stir it evenly.
[0003] For reactors producing high-efficiency ternary material precursors, conventional stirring devices of existing reactors generally adopt a combination of a two-blade inclined propeller and an anchor frame agitator. However, due to the high solid content and poor fluidity of the slurry, the stirring device has problems of shear force and chaotic flow channels of the slurry flow, which will cause dead corners in stirring and uneven mixing. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a stirring device for a reactor, which can achieve the effects of efficient shear dispersion, good slurry flow path, and no dead angle.
[0005] To achieve the above-mentioned purpose, the utility model provides a stirring device for a reactor, which is arranged on a reactor cover of the reactor, and the stirring device comprises a stirring drive mechanism, a stirring shaft, an upper stirrer, a lower stirrer and a guide tube, wherein the stirring drive mechanism is fixedly arranged on the upper end surface of the reactor cover, the upper end of the guide tube is fixedly connected to the lower end surface of the reactor cover, and the lower end extends into the reactor, and there is a distance between the lower end of the guide tube and the bottom of the reactor; the stirring shaft passes through the reactor cover and is located inside the guide tube, the upper end of the stirring shaft is transmission-connected with the stirring drive mechanism, the stirring shaft and the reactor cover are sealed, the stirring shaft and the guide tube are coaxially arranged, the upper stirrer and the lower stirrer are both installed on the stirring shaft, the upper stirrer is located in the guide tube, and the lower stirrer is located below the lower end of the guide tube, when the upper stirrer rotates, it can drive the slurry in the guide tube to have radial and axial movements along the stirring shaft at the same time, and the lower stirrer is a disc turbine type; the guide tube is provided with a slurry flow channel hole located above the upper stirrer
[0006] Furthermore, there are multiple slurry flow channel holes on the guide tube, and they are evenly arranged along the circumference of the guide tube.
[0007] Furthermore, the stirring drive mechanism includes a driving motor and a coupling, and the conveying shaft of the driving motor is connected to the stirring shaft through the coupling.
[0008] Furthermore, the upper agitator is an open turbine agitator.
[0009] Furthermore, a bearing is provided between the stirring shaft and the kettle cover.
[0010] Furthermore, a water sealing structure is provided between the stirring shaft and the kettle cover.
[0011] As described above, the stirring device of the reactor involved in the utility model has the following beneficial effects:
[0012] By arranging an upper agitator, a lower agitator and a guide tube, the slurry inside the guide tube is rotated by the upper agitator to form a downward mixed liquid flow channel, and then flows outward in the space between the lower end of the guide tube and the bottom of the reactor, and is stirred again by the lower agitator here. The lower agitator can break up the slurry again, and at the same time effectively drive the slurry to flow radially between the lower end of the guide tube and the bottom of the reactor, forming an upward mixed liquid flow channel on the outside of the guide tube, reducing the generation of dead corners; and the outer upward mixed liquid flow channel flows back from the slurry flow channel hole on the upper side of the guide tube to the inside of the guide tube, thereby forming a circulating flow. By forming a circulating mixed liquid flow channel, the slurry can be fully mixed to avoid dead corners and unevenness. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural diagram of the mixing device of the present utility model.
[0014] Description of Figure Numbers
[0015] 1. Drive motor
[0016] 2 Coupling
[0017] 3 Fixing bracket
[0018] 4 Bearings
[0019] 5 Water sealing structure
[0020] 6. Guide tube
[0021] 61 Slurry flow hole
[0022] 7. Add agitator
[0023] 8. Stirring shaft
[0024] 9 Lower stirrer
[0025] 10 cauldron lid DETAILED DESCRIPTION
[0026] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] like Figure 1As shown, the utility model provides a stirring device for a reactor, which is arranged on a reactor cover 10 of the reactor to stir the inside of the reactor, and the stirring device comprises a stirring drive mechanism, a stirring shaft 8, an upper stirrer 7, a lower stirrer 9 and a guide tube 6. The stirring drive mechanism is fixedly arranged on the upper end surface of the reactor cover 10, the upper end of the guide tube 6 is fixedly connected to the lower end surface of the reactor cover 10, and the lower end extends into the reactor. There is a distance between the lower end of the guide tube 6 and the bottom of the reactor, and the distance is set according to actual conditions; the stirring shaft 8 passes through the reactor cover 10 and is located inside the guide tube 6, and the stirring shaft The upper end of 8 is transmission connected to the stirring drive mechanism; the stirring shaft 8 and the kettle cover 10 are sealed to prevent the slurry from leaking out of the stirring shaft 8 and the kettle cover 10; the stirring shaft 8 is coaxially arranged with the guide tube 6, and the upper agitator 7 and the lower agitator 9 are both installed on the stirring shaft 8, the upper agitator 7 is located in the guide tube 6, and the lower agitator 9 is located below the lower end of the guide tube 6. When the upper agitator 7 rotates, it can drive the slurry in the guide tube 6 to have radial and axial movement along the stirring shaft 8 at the same time, and the lower agitator 9 is a disc turbine type; the guide tube 6 is provided with a slurry flow channel hole 61 located above the upper agitator 7.
[0031] The main working principle of the stirring device of the reactor involved in the utility model is as follows: when working, the stirring drive mechanism drives the stirring shaft 8 to rotate, and the stirring shaft 8 drives the upper stirrer 7 and the lower stirrer 9 to rotate, wherein the upper stirrer 7 is a hybrid type, which provides both axial force and radial force. When the upper stirrer 7 rotates, it can drive the slurry in the guide tube 6 to have radial and axial movement along the stirring shaft 8 at the same time. Under the downward pressure (i.e. axial driving action) and strong shearing and dispersing action of the upper stirrer 7, the slurry in the guide tube 6 forms a downward mixed liquid flow channel by rotation in the guide tube 6, and then in the space between the lower end of the guide tube 6 and the bottom of the reactor, the slurry is stirred. It flows outward and will be stirred again by the lower agitator 9 here. The lower agitator 9 is a disc turbine type, which can have a relatively high speed and has good radial flow and shear force. The shear force provided can break up the slurry again and effectively drive the slurry to flow radially between the lower end of the guide tube 6 and the bottom of the reactor. Then, an upward mixed liquid flow channel is formed on the outside of the guide tube 6 to reduce the formation of dead corners. The upward mixed liquid flow channel flows back from the slurry flow channel hole 61 on the upper side of the guide tube 6 to the inside of the guide tube 6, thereby forming a circulating flow. By forming a circulating mixed liquid flow channel, the slurry can be fully mixed to avoid dead corners and unevenness.
[0032] like Figure 1 As shown, the utility model is further described below with a specific embodiment:
[0033] In this embodiment, if Figure 1As shown, as a preferred design, there are multiple slurry flow channel holes 61 on the guide tube 6, which can be set according to actual needs. The multiple slurry flow channel holes 61 are evenly arranged along the circumference of the guide tube 6, and there is an appropriate distance between adjacent slurry flow channel holes 61, so as to better facilitate the slurry on the outside of the guide tube 6 to flow back to the inside.
[0034] In this embodiment, if Figure 1 As shown, as a preferred design, the stirring drive mechanism includes a driving motor 1 and a coupling 2, the output shaft of the driving motor 1 is connected to the stirring shaft 8 through the coupling 2, and the driving motor 1 preferably adopts a reduction motor, which is fixedly mounted on the upper end of the kettle cover 10 through a fixing bracket 3 to reduce vibration. The driving motor 1 can well drive the stirring shaft 8 to have a large rotation speed.
[0035] In this embodiment, if Figure 1 As shown, as a preferred design, the upper agitator 7 adopts an open turbine agitator, which generates high-speed vortex by rotating six-blade blades, so that the material is strongly sheared and mixed, and the slurry in the guide tube 6 can form a downward mixed liquid flow channel.
[0036] In this embodiment, if Figure 1 As shown, as a preferred design, a bearing 4 is provided between the stirring shaft 8 and the kettle cover 10, and the inner ring and the outer ring of the bearing 4 are fixedly connected to the stirring shaft 8 and the kettle cover 10 respectively, and the bearing 4 ensures that the stirring shaft 8 can rotate smoothly in the kettle cover 10. A water sealing structure 5 is provided between the stirring shaft 8 and the kettle cover 10, and the water sealing structure 5 is arranged below the bearing 4 and located at the lower end surface of the kettle cover 10, so as to ensure that the stirring shaft 8 and the kettle cover 10 can be well sealed to prevent the slurry from leaking.
[0037] The stirring device of the reactor of the utility model can be used for stirring reactors of various slurries, especially for stirring reactors for producing high-efficiency ternary material precursors, and can well solve the problem of uneven stirring caused by high solid content and poor fluidity of the slurry for producing high-efficiency ternary material precursors. In summary, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.
[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A stirring device for a reaction kettle, arranged on a kettle cover (10) of the reaction kettle, characterized in that: The stirring device comprises a stirring drive mechanism, a stirring shaft (8), an upper stirrer (7), a lower stirrer (9) and a guide tube (6); the stirring drive mechanism is fixedly arranged on the upper end surface of the kettle cover (10); the upper end of the guide tube (6) is fixedly connected to the lower end surface of the kettle cover (10); the lower end extends into the interior of the reactor; a distance is provided between the lower end of the guide tube (6) and the bottom of the reactor; the stirring shaft (8) passes through the kettle cover (10) and is located inside the guide tube (6); the upper end of the stirring shaft (8) is transmission-connected to the stirring drive mechanism; the stirring shaft (8) is connected to the kettle cover (10) ), the stirring shaft (8) is coaxially arranged with the guide tube (6), the upper stirrer (7) and the lower stirrer (9) are both mounted on the stirring shaft (8), the upper stirrer (7) is located in the guide tube (6), the lower stirrer (9) is located below the lower end of the guide tube (6), when the upper stirrer (7) rotates, it can drive the slurry in the guide tube (6) to move radially and axially along the stirring shaft (8), and the lower stirrer (9) is a disc turbine type; the guide tube (6) is provided with a slurry flow channel hole (61) located above the upper stirrer (7).
2. The stirring device of the reactor according to claim 1, characterized in that: There are a plurality of slurry flow channel holes (61) on the guide tube (6), and the holes are evenly arranged along the circumference of the guide tube (6).
3. The stirring device of the reactor according to claim 1, characterized in that: The stirring drive mechanism comprises a driving motor (1) and a coupling (2), and the conveying shaft of the driving motor (1) is connected to the stirring shaft (8) via the coupling (2).
4. The stirring device of the reactor according to claim 1, characterized in that: The upper stirrer (7) is an open turbine stirrer.
5. The stirring device of the reactor according to claim 1, characterized in that: A bearing (4) is provided between the stirring shaft (8) and the kettle cover (10).
6. The stirring device of the reactor according to claim 1, characterized in that: A water sealing structure (5) is provided between the stirring shaft (8) and the kettle cover (10).