A high-efficiency stirring assembly for a chemical reaction kettle

Abstract

The utility model discloses a kind of high-efficiency stirring assemblies for chemical reaction kettle, including vertically arranged stirring shaft, with the driving mechanism of stirring shaft upper end connection, multiple stirring impellers being arranged along the axial direction interval of stirring shaft, flow guide sleeve being installed in the bottom of reaction kettle and the spoiler ring being set in the periphery of stirring impeller. Each stirring impeller includes multiple inclined blades, spiral flow guide piece is equipped in flow guide sleeve, and multiple radial spoiler plates are equipped on spoiler ring. The structure can enhance the axial and radial circulation of fluid, improve stirring efficiency and mixing uniformity, suitable for high-viscosity or multiphase material chemical reaction process, with the advantages of reasonable structure, high efficiency, strong applicability.

Description

Technical Field

[0001] This utility model relates to the technical field of stirring components, and in particular to a high-efficiency stirring component for chemical reaction vessels. Background Technology

[0002] In reaction processes in chemical, pharmaceutical, and food industries, reaction vessels are widely used as core equipment for material mixing, reaction, and heat exchange. To ensure complete reaction, stirring components are typically required to continuously agitate the reactants, thereby accelerating the reaction rate and improving product quality. Traditional reaction vessels often employ a single-stage impeller stirring structure, which provides a certain mixing effect when handling low-viscosity or single-phase liquids. However, under complex conditions such as high viscosity, solid-liquid mixing, or gas-liquid reactions, they suffer from numerous dead zones and uneven mixing, making it difficult to meet the demands of high-efficiency reactions.

[0003] Furthermore, existing mixing devices mostly rely on single-point drive of the stirring shaft. The flow field formed by the rotating impeller inside the vessel is relatively limited, causing materials to easily settle or stagnate at the bottom or edge of the vessel. This not only reduces mixing efficiency but may also affect the uniformity and completeness of the final product. To improve mixing performance, some technical solutions attempt to enhance the mixing effect by increasing the stirring speed or power. However, this often comes with adverse consequences such as significantly increased energy consumption and intensified equipment vibration, which is detrimental to the long-term stable operation of the equipment.

[0004] In view of this, the inventors have specifically designed a high-efficiency stirring component for chemical reaction vessels, which leads to this invention. Utility Model Content

[0005] The purpose of this application is to provide a high-efficiency stirring component for chemical reactors, which at least solves the problems of low stirring efficiency, uneven mixing, severe material sedimentation, and high energy consumption in existing chemical reactors.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This application provides a high-efficiency stirring assembly for a chemical reactor, comprising: a stirring shaft, vertically arranged and rotatably installed inside the chemical reactor; a drive mechanism connected to the upper end of the stirring shaft for driving the stirring shaft to rotate; stirring impellers, spaced apart along the axial direction of the stirring shaft, each stirring impeller including multiple inclined blades; a flow guide sleeve, fixedly installed at the bottom of the reactor, the lower end of the stirring shaft extending into the flow guide sleeve, the flow guide sleeve having spiral flow guide vanes inside; and a turbulence ring, surrounding the stirring impellers and fixedly connected to the inner wall of the reactor, the turbulence ring having several radial turbulence plates.

[0007] In a further embodiment, there are three stirring impellers, which are respectively located at the upper, middle and lower parts of the stirring shaft and are arranged at equal intervals along the axial direction.

[0008] In a further embodiment, each of the stirring impellers has three blades, evenly distributed at 120 degrees, and the blade tilt angle is 30°~45°.

[0009] In a further embodiment, the driving mechanism is a motor, which is connected to the stirring shaft via a coupling.

[0010] In a further embodiment, the spiral guide vane inside the guide sleeve has a single-head spiral structure and a gap is left between it and the stirring shaft for fluid circulation.

[0011] In a further embodiment, the flow guide sleeve is fixedly installed at the center of the bottom of the reactor and connected to the bottom of the reactor via a support frame.

[0012] In a further embodiment, the turbulence ring is welded or bolted to the inner wall of the reactor via multiple support plates.

[0013] In a further embodiment, the spoiler on the spoiler ring is an arc-shaped plate, arranged radially, and 4 to 8 of them are evenly distributed at intervals.

[0014] Compared with the prior art, the present invention has the following advantages: By installing a multi-stage inclined blade stirring impeller driven by a drive mechanism inside the chemical reactor, and combining it with the spiral guide vanes, turbulence ring, and radial turbulence plates in the guide sleeve to form a synergistic stirring and guiding structure, not only is the axial and radial circulation of the fluid enhanced, improving stirring efficiency and mixing uniformity, but also the problems of stirring dead zones and material deposition are effectively reduced. This utility model has a simple structure, is easy to install, and has strong adaptability, making it particularly suitable for handling complex chemical reaction conditions involving high viscosity or multiphase materials.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] in: Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram highlighting the overall internal structure of the present utility model. Figure 1 ; Figure 3 This is a schematic diagram highlighting the overall internal structure of the present utility model. Figure 2 .

[0017] Label Explanation: 1. Stirring shaft; 2. Drive mechanism; 3. Stirring impeller; 4. Blade; 5. Guide sleeve; 6. Spiral guide vane; 7. Turbulence ring; 8. Turbulence plate; 9. Support frame; 10. Coupling. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] like Figures 1 to 3 As shown, a high-efficiency stirring assembly for a chemical reactor includes a stirring shaft 1, a drive mechanism 2, multiple stirring impellers 3, a flow guide sleeve 5, a flow-dispersing ring 7, and a flow-dispersing plate 8. This assembly is installed inside the chemical reactor and is suitable for efficient mixing, dispersion, and reaction process control of materials.

[0020] The stirring shaft 1 is a longitudinally extending long shaft, the upper end of which passes through the reactor cover and is connected to an externally mounted drive mechanism 2. The drive mechanism 2 is preferably a motor, connected to the stirring shaft 1 via a coupling 10 to provide stable rotational power and achieve continuous stirring. The stirring shaft 1 is arranged vertically and rotatably mounted in the reactor to accommodate material mixing requirements at different depths within the reactor.

[0021] like Figure 2 and Figure 3 As shown, three stirring impellers 3 are evenly spaced along the axial direction of the stirring shaft 1, located at the upper, middle, and lower parts of the stirring shaft 1 respectively, to cover the entire reaction space. This multi-stage arrangement can effectively break the local flow field and increase the circulation frequency of materials in the vertical direction. Each stirring impeller 3 consists of three inclined blades 4, which are evenly distributed at 120 degrees. The inclination angle is preferably 30° to 45° to enhance shear force and driving force, which helps to form powerful stirring in high-viscosity or heterogeneous materials.

[0022] The lower end of the stirring shaft 1 extends to the bottom of the reactor and is inserted into the guide sleeve 5 installed at the center of the bottom. The guide sleeve 5 is hollow along the axial direction, and a single-headed spiral guide vane is arranged inside the sleeve. This guide vane maintains an appropriate gap with the stirring shaft 1 to allow material to flow within the sleeve. The spiral guide vane 6 not only guides the backflow of material deposited at the bottom of the reactor but also enhances the upward and downward flow of the stirred liquid, optimizing the overall fluid circulation path. The guide sleeve 5 is fixedly installed at the center of the bottom of the reactor and connected to the bottom of the reactor via a support frame 9. The support frame 9 provides stability.

[0023] like Figure 3As shown, to further improve the flow field distribution, this invention provides a turbulence ring 7 on the outer circumference of each stirring impeller 3. The turbulence ring 7 is a closed ring structure, fixed to the inner wall of the reactor by multiple support plates, and can be installed by welding or threaded connection. The function of the turbulence ring 7 is to break the radially stable flow field formed by the impeller rotation, increase the randomness and convection path of the liquid flow, and improve the mixing uniformity. Four to eight radial turbulence plates 8 are uniformly arranged on the turbulence ring 7, preferably with an arc-shaped plate structure, to enhance the disturbance effect and shear force, thereby improving the dispersion and dissolution efficiency in solid-liquid and liquid-liquid systems.

[0024] In addition, several guiding structures can be set between the stirring shaft 1 and the inner wall of the reactor, such as guide plates equidistantly arranged in the vertical direction of the inner wall of the reactor. These guide plates can further guide the fluid to form a spiral or ribbon-like circulating flow along a set path, which is especially suitable for high viscosity or solid-containing systems, and avoids the generation of local stagnation or dead zones.

[0025] To meet the heat exchange requirements of high-temperature reaction materials, the stirring shaft 1 can also be designed as a hollow shaft structure with a condensate return channel reserved inside. This allows the condensate to flow along the internal channel of the stirring shaft 1 and participate in heat exchange, which is beneficial to improving the temperature control response speed and efficiency of the reaction system and further expanding the functional applicability of this stirring assembly.

[0026] The overall structural design of this utility model is compatible with existing standardized reactor interfaces, which not only makes installation convenient and structurally stable, but also significantly improves the stirring efficiency and mixing quality of reactants in actual use. It is particularly suitable for chemical systems with high viscosity, easy sedimentation, or requiring enhanced shearing action.

[0027] In summary, through the synergistic effect of multi-stage impellers, spiral guides, and 8 surrounding baffles and guiding structures, the high-efficiency stirring assembly can effectively solve the problems of uneven stirring, low efficiency, and material deposition in existing technologies, and has broad application prospects in the fields of chemical industry, pharmaceutical industry, coatings, and food industry.

[0028] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

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