An assembled micro-power unit structure and a tubular continuous flow reactor

Abstract

This invention relates to the technical field of continuous flow reactors, and more particularly to an assembled micro-power unit structure and a tubular continuous flow reactor, comprising a rotating shaft and a plurality of micro-power unit bodies arranged sequentially along the axial direction of the rotating shaft; each micro-power unit body has a through hole at its center, fitted onto the rotating shaft; adjacent micro-power unit bodies have meshing toothed structures on their end faces; the toothed structures are used for torque transmission and circumferential angle positioning between adjacent micro-power unit bodies; the rotating shaft is provided with a locking component for axially fixing the plurality of micro-power unit bodies as a whole; the toothed structures are configured as at least one of triangular teeth, trapezoidal teeth, rectangular teeth, sawtooth teeth, or wave-shaped teeth, and adjacent toothed structures are mutually fitted. This invention has a simple structure, flexible assembly, and can realize multi-stage array arrangement, and is suitable for the internal rotation enhancement structure of a tubular continuous flow reactor.

Description

Technical Field

[0001] This invention relates to the technical field of continuous flow reactors, and more particularly to an assembled micro-power unit structure and a tubular continuous flow reactor. Background Technology

[0002] Tubular continuous flow reactors are widely used in chemical reactions, fine chemical synthesis and material preparation due to their continuous operation, high heat transfer efficiency and good safety. In order to enhance the mixing and transmission of fluids inside the tube, a rotating power structure, such as rotating blades or multi-stage power units, is usually required inside the reactor.

[0003] In the prior art, rotating blades are usually fixed to the rotating shaft by welding or integral molding, such as the multi-stage spiral blade conveying device disclosed in CN210709287U and the stirring shaft and tubular reactor disclosed in CN110013818A. Although the mainstream welded and integrally molded blades can achieve rotational reinforcement, the blade installation angle is completely fixed after manufacturing, which cannot be flexibly adjusted according to the working conditions, and cannot be modularly disassembled. If a single component is damaged, the whole unit must be replaced. Some structures use key or pin connections, such as the composite alternating continuous double inner rotating drum soaking reactor disclosed in CN202778501U. However, such connections are usually limited by fixed positions, and the blade angle adjustment range is small, which cannot meet the flexible combination requirements under different process conditions. In addition, although the modular continuous reaction microreactor disclosed in CN102405099A adopts modular stacking, it is still mainly fixed by a frame, lacking efficient torque transmission and reliable locking structure on the rotating shaft.

[0004] Therefore, it is necessary to provide a modular micro-power unit structure and tubular continuous flow reactor that can achieve modular assembly, adjustable angle, and reliable fixation. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated micro-power unit structure and a tubular continuous flow reactor, which achieves simple structure, flexible assembly, and multi-stage array arrangement, and is suitable for the internal rotation enhancement structure of a tubular continuous flow reactor.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an assembled micro-power unit structure, comprising a rotating shaft and a plurality of micro-power unit bodies arranged sequentially along the axial direction of the rotating shaft; The micro-power unit body has a through hole at its center that is fitted onto the rotating shaft. The end faces of adjacent micro-power unit bodies are provided with intermeshing tooth-shaped structures; The toothed structure is used for torque transmission and circumferential angle positioning between adjacent micro-power unit bodies. The rotating shaft is equipped with a locking component that axially and integrally fixes the bodies of several micro-power units.

[0007] As a preferred embodiment of the present invention, the tooth structure is configured as at least one of triangular teeth, trapezoidal teeth, rectangular teeth, sawtooth teeth or wave-shaped teeth, and adjacent tooth structures fit together.

[0008] As a preferred embodiment of the present invention, the tooth-shaped structure is evenly distributed circumferentially along the end face of the micro-power unit body to form a circumferential indexing structure. The pitch angle between adjacent teeth of the circumferential indexing structure is 5° to 180°.

[0009] As a preferred embodiment of the present invention, the locking components are disposed at both ends of the rotating shaft, and the locking components on both sides abut against the opposite end faces of the two outermost micro-power unit bodies in the axial direction, so as to form an axial clamping and fixing of all micro-power unit bodies.

[0010] As a preferred embodiment of the present invention, the locking assembly is configured as at least one of a nut locking structure, a snap ring locking structure, a shrink sleeve locking structure, or a bolt locking structure.

[0011] As a preferred embodiment of the present invention, the locking assembly includes a pair of snap rings, which are fixed to both ends of the rotating shaft; One end of the snap ring is provided with a snap-fit ​​mechanism adapted to the toothed structure.

[0012] As a preferred embodiment of the present invention, the two ends of the rotating shaft are provided with countersunk holes, and the two ends of the snap ring are provided with through holes, the through holes corresponding to the countersunk holes and connected by screws.

[0013] As a preferred embodiment of the present invention, one end of the rotating shaft is fixedly connected to a collar, and the other end is provided with an external thread; The collar corresponds to a snap ring on one side, and a friction pad is provided between the two. A locking sleeve is fitted onto the end of the rotating shaft away from the shaft collar. The inner side of the locking sleeve has an internal thread that matches the external thread. The locking sleeve corresponds to the snap ring on the other side.

[0014] As a preferred embodiment of the present invention, the outer periphery of the micro-power unit body is provided with a stirring and turbulence structure for enhancing the mixing and mass transfer of fluids inside the pipe.

[0015] A tubular continuous flow reactor includes a prefabricated micro-power unit structure as described above.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, through the circumferential indexing setting of the tooth-shaped structure, realizes the circumferential angle adjustment of adjacent micro-power unit bodies, which is not limited by the fixed point of processing. During installation, the arrangement angle and array mode of the units can be adjusted without additional machining, and it is suitable for various working conditions. The micro-power unit body can be manufactured independently and installed on the rotating shaft in a kit manner to form a modular structure, which is suitable for mass production and rapid on-site assembly. It does not require welding and is integrally machined, thus reducing assembly and equipment costs. Attached Figure Description

[0017] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the assembly of several micro-power unit structures of the present invention; Figure 2 This is a schematic diagram of the micro-power unit body of the present invention; Figure 3 This is a three-dimensional schematic diagram of the snap-fit ​​ring of the present invention; Figure 4 yes Figure 1 A magnified view of a portion of region A; Figure 5 This is a three-dimensional schematic diagram of the locking component of the present invention; In the figure: 1. Rotating shaft; 2. Micro-power unit body; 201. Stirring and turbulence structure; 3. Locking assembly; 301. Snap ring; 4. Toothed structure; 5. Friction pad; 6. Shaft collar; 7. Locking sleeve. Detailed Implementation

[0019] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0020] Please see Figure 1-5 The present invention provides a technical solution: an assembled micro-power unit structure, comprising a rotating shaft 1 and a plurality of micro-power unit bodies 2 arranged sequentially along the axial direction of the rotating shaft 1; The micro-power unit body 2 has a through hole at its center that is fitted onto the rotating shaft 1; The end faces of adjacent micro-power unit bodies 2 are provided with intermeshing toothed structures 4; Toothed structure 4 is used for torque transmission and circumferential angle positioning between adjacent micro-power unit bodies 2; A locking assembly 3 is provided on the rotating shaft 1 to fix the bodies 2 of several micro-power units axially as a whole.

[0021] Specifically, the micro-power unit body 2 is sequentially fitted onto the rotating shaft 1 through the through hole. The circumferential angle of the adjacent micro-power unit bodies 2 is adjusted so that the toothed structures 4 on the opposite end faces of the adjacent micro-power unit bodies 2 mesh and fit together. After all the micro-power unit bodies 2 are fitted, locking components 3 are set at both ends of the rotating shaft 1. The locking components 3 press against the micro-power unit bodies 2 at both ends along the axial direction of the rotating shaft 1 to complete the axial overall fixation of the entire structure. In this embodiment, the circumferential angle of adjacent micro-power unit bodies 2 can be adjusted by the circumferential indexing setting of the tooth structure 4, without being limited by the fixed point of processing. The arrangement angle and array mode of the units can be adjusted during installation without additional machining, and it is suitable for various working conditions. Furthermore, the micro-power unit body 2 is set up, which can be manufactured independently and installed on the rotating shaft 1 in a kit manner to form a modular structure, suitable for mass production and rapid on-site assembly, without the need for welding and integral processing, thus reducing assembly and equipment costs; Furthermore, adjacent micro-power unit bodies 2 are set to mesh through toothed structures 4, and torque is transmitted through the meshing surface during rotation, which improves the stability of the output. Multiple micro-power unit bodies 2 are continuously connected in series along the rotation axis 1 to form a multi-level array, which is suitable for high-density rotation enhancement in tubular continuous flow reactors. Furthermore, the locking assembly 3 is set to fix all the micro-power unit bodies 2 axially as a whole, without the need to lock each unit individually. The structure is simple and has good coaxiality, making it suitable for long-axis multi-level continuous arrangement. Preferably, the rotating shaft 1 is a solid drive shaft with a finely machined surface, forming a clearance fit with the through hole of the micro-power unit body 2 to ensure smooth assembly and coaxiality.

[0022] Based on the above embodiments, the tooth structure 4 is configured as at least one of triangular teeth, trapezoidal teeth, rectangular teeth, sawtooth teeth or wave teeth, and adjacent tooth structures 4 are fitted together.

[0023] Based on the above embodiments, the tooth-shaped structure 4 is evenly distributed circumferentially along the end face of the micro-power unit body 2 to form a circumferential indexing structure; The pitch angle between adjacent teeth in the circumferential indexing structure is 5° to 180°.

[0024] Specifically, on the end face of the micro-power unit body 2, tooth structure 4 is uniformly machined at a fixed pitch angle, such as 30°, 60° or 90°, to ensure that the tooth distribution of all units is consistent. During assembly, the first micro-power unit body 2 is fitted onto the rotating shaft 1. When the second unit is fitted, different tooth positions of the tooth structure 4 are selected to mesh with the previous unit, thereby changing the circumferential angle between the two units. Each time a tooth position is switched, the angle change is equal to the pitch angle set during machining, thus achieving precise angle adjustment. In this embodiment, the tooth structure 4 can be selected from triangular teeth, trapezoidal teeth, rectangular teeth, sawtooth teeth or wave teeth, which can be flexibly selected according to torque load and processing cost. Adjacent tooth structures 4 fit together to ensure meshing without gaps, ensuring stable torque transmission and avoiding gaps from affecting the fluid. Furthermore, the toothed structure is evenly distributed in four directions to form a circumferential indexing structure, with an indexing angle covering a range of 5° to 180°. The circumferential angle can be adjusted through tooth misalignment meshing, providing good flexibility. Preferably, the tooth structure 4 is evenly distributed 360° along the circumferential direction of the end face of the micro-power unit body 2 to form a circumferential indexing structure; the angle between the symmetrical center lines of two adjacent teeth is the indexing angle, the indexing angle ranges from 5° to 180°, corresponding to 2 to 72 teeth on a single end face; all micro-power unit bodies 2 assembled in the same batch have the same indexing angle of the tooth structure 4, ensuring that any two units can achieve full tooth meshing assembly; Preferably, in heavy-load, high-torque conditions, such as high-viscosity fluids or long-shaft multi-stage arrays, trapezoidal teeth are preferred. They have high tooth root strength and a large meshing surface contact area, resulting in strong torque transmission capability. They also have an automatic centering effect to ensure assembly coaxiality. Preferably, in high-precision indexing and positioning conditions, such as fine-tuning reactions, rectangular teeth are preferred because they have high tooth surface fitting accuracy, no circumferential positioning movement, and small indexing angle error. Preferably, in unidirectional continuous rotation conditions, such as conventional continuous flow reactions, sawtooth teeth are preferred. They provide tight unidirectional meshing, high transmission efficiency, convenient reverse tooth retraction, and easy assembly angle adjustment. Preferably, in low-cost general operating conditions, such as low-power or low-load scenarios, triangular teeth are preferred because they have simple processing technology, low manufacturing cost, and wide adaptability. Preferably, when the working conditions contain solid particles and materials that are prone to coking, wave-shaped teeth are preferred. The tooth surface has no sharp angles and no dead corners where materials can get stuck, thus reducing the risk of material sticking and coking. Preferably, under general standard operating conditions, the circumferential indexing structure is selected with an indexing angle of 15°~90°, corresponding to 4~24 teeth on a single end face, to ensure the angle adjustment accuracy, tooth structure strength and machining difficulty, and is suitable for most tubular continuous flow reactor operating conditions. Preferably, under high-precision working conditions, a pitch angle of 5°~30° is selected, corresponding to 12~72 teeth on a single end face, with a minimum adjustment step of 5°, which can achieve fine adjustment of the circumferential angle and is suitable for the needs of complex flow fields; Preferably, under high-load, long-shaft, multi-stage working conditions, a pitch angle of 30°~90° is preferred, corresponding to 4~12 teeth on a single end face. The cross-section of a single tooth is large and the tooth root strength is high, which can withstand large torque loads and avoid the risk of tooth breakage caused by high-speed and heavy-load rotation. It is important to note that the graduation angle should preferably be an integer divisor of 360° to ensure uniform circumferential graduation, thereby guaranteeing machining and meshing accuracy.

[0025] Based on the above embodiments, locking components 3 are disposed at both ends of the axial direction of the rotating shaft 1, and the two locking components 3 on both sides abut against the opposite end faces of the two outermost micro-power unit bodies 2 in the axial direction, so as to form an axial clamping and fixing of all micro-power unit bodies 2.

[0026] In this embodiment, the locking components 3 at both ends of the rotating shaft 1 clamp each other in opposite directions, so that all the micro-power unit bodies 2 connected in series are pressed synchronously, and the tooth structure 4 of all adjacent units always remains in a fully fitted state, avoiding axial movement gaps, avoiding torque transmission failure during rotation, and improving meshing reliability. Furthermore, by setting two sets of locking components 3, the axial fixation of all micro-power unit bodies 2 can be completed, eliminating the need to set a separate locking structure for each unit, simplifying the processing and assembly process, improving assembly efficiency, and reducing processing costs.

[0027] Based on the above embodiments, the locking component 3 is configured as at least one of a nut locking structure, a snap ring locking structure, a shrink sleeve locking structure, or a bolt locking structure.

[0028] Preferably, the two ends of the rotating shaft 1 are machined with external thread sections that match the locking nuts, and locking nuts of the corresponding specifications are matched. Flat washers can be matched to increase the contact area. The end face of the nut abuts against the end face of the outermost micro-power unit body 2 through the flat washer. By tightening the nut, an axial preload is applied to achieve bidirectional clamping and fixing of all units, which is suitable for conventional continuous production conditions. Preferably, the rotating shaft 1 has annular grooves that match the shaft retaining rings at both ends of its axial direction. The shaft retaining rings are fitted with the grooves and embedded in them to form axial limiting. The end face of the retaining rings abuts against the end face of the outermost micro-power unit body 2 to form axial limiting. This is suitable for high-speed dynamic balancing conditions. Preferably, a miniature expansion coupling sleeve is used and fitted onto both ends of the rotating shaft 1. One end face of the expansion sleeve abuts against the end face of the outermost micro-power unit body 2. By tightening the locking screw on the expansion sleeve, the inner and outer rings of the expansion sleeve respectively hug the rotating shaft 1 and the unit mating surface, achieving gapless axial positioning and clamping fixation, which is suitable for working conditions with frequent model changes. Preferably, axial threaded holes are machined on the end faces of both ends of the rotating shaft 1, and fitted with internal hexagonal locking bolts and circular pressure caps; the radial coverage range of the pressure caps is larger than the inner diameter of the through hole of the micro-power unit body 2. The pressure caps are fixed to the end face of the rotating shaft 1 by tightening the bolts, and the inner end face of the pressure caps abuts against the end face of the outermost micro-power unit body 2 to achieve axial clamping and fixing, which is suitable for short shaft compact working conditions.

[0029] Based on the above embodiments, the locking assembly 3 includes a pair of snap-fit ​​rings 301, which are fixed to both ends of the rotating shaft 1; One end of the snap ring 301 is provided with a snap-fit ​​mechanism that is compatible with the toothed structure 4.

[0030] In this embodiment, a snap ring 301 is provided to clamp and fix the micro-power unit body 2 axially. By setting a snap mechanism that is compatible with the tooth structure 4, a circumferential meshing limit is formed with the outermost unit, thereby preventing axial and circumferential movement and avoiding circumferential slippage between the outermost unit and the rotating shaft 1 under the condition of long shaft multi-level array, thus improving the reliability of locking and transmission. Furthermore, by setting the snap-fit ​​mechanism and the meshing surface of the tooth structure 4 to uniformly transmit the axial clamping force, the local point or line contact of the traditional locking parts is avoided, the contact area of ​​the locking is increased, and the locking parts are prevented from directly pressing the tooth surface and causing tooth deformation. Preferably, the meshing teeth of the snap-fit ​​mechanism are adapted to the tooth structure 4 of the micro-power unit body 2, and trapezoidal teeth or rectangular teeth are preferred, which have high meshing strength and strong load-bearing capacity, and are suitable for most industrial working conditions. Preferably, the snap ring 301 is made of the same material as the micro-power unit body 2 to avoid changes in the meshing gap caused by the difference in thermal expansion coefficients of different materials; Preferably, the outer arc surface of the snap ring 301 is flush with the outer arc surface of the micro-power unit body 2 to avoid radial protrusions and gaps, so as to achieve a constant diameter throughout the flow channel inside the pipe, avoid the local resistance and material sticking problem of traditional locking structures, and is suitable for tubular continuous flow reaction conditions of high viscosity, solid particles, and easy coking materials.

[0031] Based on the above embodiment, countersunk holes are provided at both ends of the rotating shaft 1, and through holes are provided at both ends of the snap ring 301. The through holes correspond to the countersunk holes and are connected by screws.

[0032] In this embodiment, the snap ring 301 is locked to the rotating shaft 1 by radial screws, which simultaneously achieves circumferential and axial limiting and improves the reliability of fixing. Furthermore, arc-shaped blind countersunk holes are provided on both sides of the rotating shaft 1, which will not cut the metal fibers of the shaft body and avoid weakening the strength of the rotating shaft 1; Preferably, the outer diameter tolerance of the snap ring 301 is set to be consistent with the outer diameter tolerance of the micro-power unit body 2, with h7 grade tolerance preferred. After assembly, the overall radial runout is no more than 0.05mm, minimizing fluid disturbance.

[0033] Based on the above embodiments, one end of the rotating shaft 1 is fixedly connected to a collar 6, and the other end is provided with an external thread; The collar 6 corresponds to the snap ring 301 on one side, and a friction pad 5 is provided between the two; A locking sleeve 7 is fitted onto the end of the rotating shaft 1 away from the collar 6. The inner side of the locking sleeve 7 is provided with an internal thread that is compatible with the external thread. The locking sleeve 7 corresponds to the snap ring 301 on the other side.

[0034] In this embodiment, a locking sleeve 7 is provided to uniformly apply locking force along the axial direction of the rotating shaft 1, thereby preventing the radial locking screw from being subjected to radial shear force for a long time, avoiding screw breakage caused by long-term operation or impact vibration, and improving the operational reliability and service life of the structure. Furthermore, the structure can be locked simply by tightening the locking sleeve 7, without the need to align the holes, which simplifies the assembly process, avoids assembly problems caused by hole machining deviations, reduces machining and assembly difficulty, and improves assembly efficiency. Furthermore, the outer arc surfaces of the collar 6, locking sleeve 7, snap ring 301 and micro-power unit body 2 are made flush with each other to avoid radial protrusions and exposed fasteners, which is suitable for fluid transport and refined reaction processes in tubular continuous flow reactors. Preferably, the collar 6 and the rotating shaft 1 are integrally machined, and the axial end face facing the snap ring 301 is a flat and fitting surface for placing the friction pad 5. Preferably, the friction pad 5 is made of composite material, with a steel plate as the skeleton and vulcanized rubber layers on both sides, which improves the vibration reduction and anti-loosening effect, further compensates for end face machining deviations, and is suitable for high speed and low vibration working conditions.

[0035] Based on the above embodiments, the outer periphery of the micro-power unit body 2 is provided with a stirring and turbulence structure 201 for enhancing the mixing and mass transfer of fluids inside the pipe.

[0036] In this embodiment, when several micro-power unit bodies 2 are connected in series to form a multi-stage array, the stirring and turbulence structure 201 simultaneously forms a continuous multi-stage shearing and turbulence structure, reducing the dead zone of the tube wall, which is suitable for the process requirements of tubular continuous flow reactors. Preferably, the stirring and turbulence structure 201 is a spiral blade type turbulence structure, which is provided with single or multiple continuous spiral blades, and the spiral angle is preferably 15°~60°.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection, the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0038] The above provides a detailed description of the assembled micro-power unit structure and tubular continuous flow reactor provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A prefabricated micro-power unit structure, characterized in that, It includes a rotating shaft (1) and several micro-power unit bodies (2) arranged sequentially along the axial direction of the rotating shaft (1); The micro-power unit body (2) has a through hole at its center that is fitted onto the rotating shaft (1); The end faces of adjacent micro-power unit bodies (2) are provided with intermeshing toothed structures (4). The toothed structure (4) is used for torque transmission and circumferential angle positioning between adjacent micro-power unit bodies (2); The rotating shaft (1) is provided with a locking assembly (3) for axially fixing several micro-power unit bodies (2).

2. The prefabricated micro-power unit structure according to claim 1, characterized in that, The tooth structure (4) is configured as at least one of triangular teeth, trapezoidal teeth, rectangular teeth, sawtooth teeth or wave teeth, and adjacent tooth structures (4) fit together.

3. A prefabricated micro-power unit structure according to claim 1 or 2, characterized in that, The toothed structure (4) is evenly distributed circumferentially along the end face of the micro-power unit body (2) to form a circumferential indexing structure; The pitch angle between adjacent teeth of the circumferential indexing structure is 5° to 180°.

4. The prefabricated micro-power unit structure according to claim 1, characterized in that, The locking components (3) are disposed at both ends of the axial direction of the rotating shaft (1). The locking components (3) on both sides abut against the opposite end faces of the two outermost micro-power unit bodies (2) in the axial direction to form an axial clamping and fixing of all micro-power unit bodies (2).

5. The prefabricated micro-power unit structure according to claim 4, characterized in that, The locking component (3) is configured as at least one of a nut locking structure, a snap ring locking structure, a shrink sleeve locking structure, or a bolt locking structure.

6. The prefabricated micro-power unit structure according to claim 4, characterized in that, The locking assembly (3) includes a pair of snap rings (301), which are fixed to both ends of the rotating shaft (1); One end of the snap ring (301) is provided with a snap mechanism that is compatible with the toothed structure (4).

7. The prefabricated micro-power unit structure according to claim 6, characterized in that, The rotating shaft (1) has countersunk holes at both ends, and the snap ring (301) has through holes at both ends. The through holes correspond to the countersunk holes and are connected by screws.

8. The prefabricated micro-power unit structure according to claim 6, characterized in that, One end of the rotating shaft (1) is fixedly connected to a collar (6), and the other end is provided with an external thread; The collar (6) corresponds to the snap ring (301) on one side, and a friction pad (5) is provided between the two. The rotating shaft (1) is fitted with a locking sleeve (7) at one end away from the collar (6). The locking sleeve (7) has an internal thread that matches the external thread on its inner side. The locking sleeve (7) corresponds to the snap ring (301) on the other side.

9. The prefabricated micro-power unit structure according to claim 1, characterized in that, The outer periphery of the micro-power unit body (2) is provided with a stirring and turbulence structure (201) for enhancing the mixing and mass transfer of fluids inside the pipe.

10. A tubular continuous flow reactor, characterized in that, This includes the use of a prefabricated micro-power unit structure as described in any one of claims 1-9.

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