A reaction kettle with high-efficiency stirring function

Abstract

The utility model belongs to chemical equipment technical field discloses a kind of reaction kettle with efficient stirring function, including kettle body, the jacket of setting in kettle body outer wall, the stirring mechanism of being made of coaxially arranged first stirring shaft and second stirring shaft, the stirring mechanism is installed on kettle body, the first stirring shaft is sleeved in the outside of second stirring shaft, the end of first stirring shaft is inserted into the bottom of kettle body and is equipped with high shear radial impeller, kettle body is equipped with the venturi tube type fairing of being sleeved in the periphery of high shear radial impeller by support, and high shear radial impeller is located at the throat pipe of venturi tube type fairing;The bottom of second stirring shaft is equipped with the axial flow wide blade paddle above the outlet end of venturi tube type fairing.The utility model provides a set of coaxial sleeve, independent driving stirring mechanism, efficiently coupled by venturi tube type fairing, to realize the fast, uniform mixing, mass transfer and heat transfer of material in reaction kettle.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a reaction vessel with a high-efficiency stirring function. Background Technology

[0002] Reactors are core equipment in industries such as chemical, pharmaceutical, and food processing. Their stirring performance directly affects reaction efficiency, product quality, and energy consumption. Traditional stirred tanks often employ a single-shaft, single-layer, or multi-layer structure with similar impellers, which has the following drawbacks: a single impeller cannot simultaneously meet the requirements of macroscopic circulation (such as homogenization and heat transfer) and high shear (such as dispersion and crushing); there are mixing dead zones, especially at the interface between the bottom of the tank and the liquid surface, where uneven material mixing can easily occur, affecting reaction uniformity; to meet process requirements, it is often necessary to increase the rotation speed, leading to increased energy consumption and potentially damaging the product due to excessive shear. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides a reaction vessel with a high-efficiency stirring function, a coaxially mounted and independently driven stirring mechanism, and combines the functions of high shear dispersion and strong axial circulation. The two functions are efficiently coupled by a Venturi tube-type flow guide, thereby realizing rapid and uniform mixing, mass transfer and flow of materials in the reaction vessel.

[0004] The technical solution adopted by this utility model is: a reaction vessel with a high-efficiency stirring function, including a vessel body, a jacket disposed on the outer wall of the vessel body, and a stirring mechanism composed of a first stirring shaft and a second stirring shaft arranged coaxially. The stirring mechanism is installed on the vessel body. The first stirring shaft is sleeved on the outside of the second stirring shaft. The end of the first stirring shaft extends into the bottom of the vessel body and is equipped with a high-shear radial impeller. The vessel body is equipped with a Venturi tube type flow guide shroud sleeved around the high-shear radial impeller via a bracket, and the high-shear radial impeller is located at the throat of the Venturi tube type flow guide shroud. An axial flow wide blade is installed at the bottom of the second stirring shaft above the outlet end of the Venturi tube type flow guide shroud. The vessel body is equipped with a drive motor that drives the first stirring shaft to rotate, and a geared motor that drives the second stirring shaft to rotate is also installed on the vessel body.

[0005] Preferably, the first stirring shaft and the second stirring shaft rotate in opposite directions.

[0006] Preferably, a vortex-suppressing impeller is installed on the second stirring shaft above the axial flow wide blade impeller, and the vortex-suppressing impeller is one of a sawtooth impeller or an eccentric impeller.

[0007] Preferably, the top of the support is fixed to the bottom of the top cover of the vessel.

[0008] Preferably, the bracket is detached from the bottom of the top cover of the vessel via a disassembly mechanism. The disassembly mechanism includes multiple vertically downward-facing insertion posts located at the bottom of the top cover of the vessel, each corresponding to a bracket. The bracket is provided with a positioning cylinder for inserting the insertion posts. The insertion posts have threaded holes, and the positioning cylinder has through holes corresponding to the threaded holes. Bolts are installed between the through holes and the threaded holes, so that the insertion posts and the positioning cylinder are fixed together by bolts.

[0009] Preferably, both the first and second stirring shafts are made of high-strength materials.

[0010] Preferably, the bracket is streamlined.

[0011] The beneficial effects of this utility model are: 1. This utility model provides a set of coaxially mounted, independently driven stirring mechanism, which combines the functions of high shear dispersion and strong axial circulation. The two are efficiently coupled through a Venturi tube-type flow guide, thereby realizing rapid and uniform mixing, mass transfer and heat transfer of materials in the reactor. Attached Figure Description

[0012] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the Venturi tube type flow guide of this utility model; Figure 3 This is a schematic diagram of the disassembly mechanism of this utility model.

[0014] Explanation of reference numerals in the attached drawings: 1. Vessel body; 2. Jacket; 3. Shelf plate; 4. First stirring shaft; 5. Second stirring shaft; 6. High-shear radial impeller; 7. Venturi tube type flow guide; 8. Axial flow wide blade; 9. Drive motor; 10. Gear motor; 11. Anti-vortex impeller; 12. Top cover; 13. Insert column; 14. Positioning cylinder; 15. Threaded hole; 16. Through hole; 17. Bolt. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0016] like Figure 1-3 As shown, this embodiment provides a reactor with a high-efficiency stirring function, including a reactor body 1, a jacket 2 disposed on the outer wall of the reactor body 1, and a stirring mechanism composed of a first stirring shaft 4 and a second stirring shaft 5 coaxially arranged. The stirring mechanism is installed on the reactor body 1. The first stirring shaft 4 is sleeved on the outside of the second stirring shaft 5. The end of the first stirring shaft 4 extends into the bottom of the reactor body 1 and is equipped with a high-shear radial impeller 6. The reactor body 1 is equipped with a Venturi tube type flow guide shroud 7 sleeved around the high-shear radial impeller 6 via a bracket 3, and the high-shear radial impeller 6 is located at the throat of the Venturi tube type flow guide shroud 7. An axial flow wide blade 8 is installed at the bottom of the second stirring shaft 5 above the outlet end of the Venturi tube type flow guide shroud 7. The vessel body 1 is equipped with a drive motor 9 that drives the first stirring shaft 4 to rotate. The first stirring shaft 4 and the drive motor 9 are connected by a gear transmission mechanism. The vessel body 1 is also equipped with a reduction motor 10 that drives the second stirring shaft to rotate. The two shafts are independently driven by the drive motor 9 and the reduction motor 10, respectively, which can achieve different speeds and opposite rotation directions, generating complex fluid shearing and convection. A high-shear radial impeller 6 is installed at the end of the first stirring shaft 4 and is precisely located at the narrowest point of the throat of the Venturi tube-type flow guide shroud 7. The high-speed rotation of the impeller generates strong mechanical shearing and tearing action on the material sucked in from the bottom of the flow guide shroud, which is particularly suitable for crushing particles, dispersing agglomerates, and emulsifying incompatible liquids.

[0017] The axial flow wide-blade impeller 8 is installed at the bottom of the second stirring shaft 5, directly above the outlet end of the Venturi tube-type flow guide shroud 7. Function: This impeller is similar to a propeller, generating a powerful, downward axial flow that rapidly draws in and transports the high-shear material to various parts of the vessel, especially the upper and corner areas, eliminating mixing dead zones.

[0018] Preferably, the first stirring shaft 4 and the second stirring shaft 5 rotate in opposite directions.

[0019] Preferably, a vortex-suppressing impeller 11 is installed on the second stirring shaft 5 above the axial flow wide blade impeller 8. The vortex-suppressing impeller is one of a sawtooth impeller or an eccentric impeller, used to break up vortices that may form on the liquid surface, maintain the flow field stability, and improve stirring efficiency.

[0020] Preferably, the top of the support 3 is fixed to the bottom of the top cover 12 of the vessel body 1.

[0021] Preferably, the bracket 3 is detachably connected to the bottom of the top cover 12 of the vessel body 1 via a disassembly mechanism. The disassembly mechanism includes multiple vertically downward-pointing insertion posts 13 located at the bottom of the top cover 12 of the vessel body 1, each corresponding to one of the bracket 3. The bracket 3 is provided with a positioning cylinder 14 for inserting the insertion posts 13. Each insertion post 13 has a threaded hole 15, and the positioning cylinder 14 has a through hole 16 corresponding to each threaded hole 15. Bolts 17 are installed between the through holes 16 and the threaded holes 15, thus fixing the insertion post 13 to the positioning cylinder 14 with bolts. After the insertion post is inserted into the positioning cylinder, the bolts 17 are passed through the through holes 16 on the cylinder and screwed into the threaded holes 15 on the insertion post, achieving a secure fixation and convenient disassembly; facilitating installation, maintenance, and cleaning.

[0022] Preferably, both the first stirring shaft 4 and the second stirring shaft 5 are made of high-strength material. Preferably, the support 3 is streamlined.

[0023] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0024] Working principle: The drive motor 9) and the reduction motor 10 drive the first stirring shaft 4) and the second stirring shaft 5) to rotate in opposite directions respectively.

[0025] High shear and jetting: The high-speed rotating high-shear radial impeller 6 creates a negative pressure at the throat of the venturi tube-type guide shroud 7), drawing in the material from the bottom. The material is crushed and dispersed after being subjected to extremely high shear force in the narrow throat space, and then jetted out at high speed from the upper outlet of the guide shroud.

[0026] Axial circulation and global mixing: The axial flow wide blade (8) located above the outlet of the guide shroud precisely captures this high-speed jet flow and transforms it into a strong, downward-propelling axial mainstream. This mainstream drives the material toward the bottom of the vessel and then back up along the vessel wall, forming a large-scale circulation loop, ensuring that material in all areas of the vessel can be continuously brought into the high-shear zone at the bottom for processing.

[0027] Vortex suppression: The vortex suppressor 11) effectively prevents the formation of vortices in the center of the liquid surface, ensuring that the stirring power is effectively used for mixing rather than forming unnecessary vortices.

[0028] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A reaction vessel with a high-efficiency stirring function, comprising a vessel body (1), a jacket (2) disposed on the outer wall of the vessel body (1), and a stirring mechanism composed of a first stirring shaft (4) and a second stirring shaft (5) arranged coaxially, wherein the stirring mechanism is mounted on the vessel body (1), characterized in that: The first stirring shaft (4) is sleeved on the outside of the second stirring shaft (5). The end of the first stirring shaft (4) extends into the bottom of the vessel body (1) and is equipped with a high-shear radial impeller (6). The vessel body (1) is equipped with a Venturi tube type flow guide (7) sleeved around the high-shear radial impeller (6) via a bracket (3). The high-shear radial impeller (6) is located at the throat of the Venturi tube type flow guide (7). An axial flow wide blade (8) is installed at the bottom of the second stirring shaft (5) above the outlet end of the Venturi tube type flow guide (7). The vessel body (1) is equipped with a drive motor (9) that drives the first stirring shaft (4) to rotate, and a reduction motor (10) that drives the second stirring shaft to rotate is also installed on the vessel body (1).

2. The reaction vessel with high-efficiency stirring function according to claim 1, characterized in that: The first stirring shaft (4) and the second stirring shaft (5) rotate in opposite directions.

3. A reaction vessel with a highly efficient stirring function according to claim 1, characterized in that: The second stirring shaft (5) is equipped with a vortex suppressor (11) located above the axial flow wide blade impeller (8). The vortex suppressor is one of a sawtooth impeller or an eccentric impeller.

4. A reaction vessel with a highly efficient stirring function according to claim 1, characterized in that: The top of the bracket (3) is fixed to the bottom of the top cover (12) of the vessel body (1).

5. A reaction vessel with a highly efficient stirring function according to claim 4, characterized in that: The bracket (3) is disassembled and connected to the bottom of the top cover (12) of the vessel body (1) via a disassembly mechanism. The disassembly mechanism includes multiple vertically downward inserts (13) located at the bottom of the top cover (12) of the vessel body (1) and corresponding to the bracket (3). The bracket (3) is provided with a positioning cylinder (14) for inserting the inserts (13). The inserts (13) are provided with threaded holes (15). The positioning cylinder (14) is provided with through holes (16) corresponding to the threaded holes (15). Bolts (17) are installed between the through holes (16) and the threaded holes (15), so that the inserts (13) and the positioning cylinder (14) are fixed together by bolts.

6. A reaction vessel with a highly efficient stirring function according to claim 1, characterized in that: Both the first stirring shaft (4) and the second stirring shaft (5) are made of high-strength material.

7. A reaction vessel with a highly efficient stirring function according to claim 1, characterized in that: The support (3) is streamlined.

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