Leakage-free sampling reaction kettle based on fluid simulation

Abstract

The invention relates to the technical field of reaction kettle sampling, in particular to a fluid simulation-based leak-free sampling reaction kettle, which comprises a kettle body, a reaction medium is filled in the kettle body, a stirring shaft is rotatably arranged in the kettle body, and a stirring head is sleeved on the outer wall of the stirring shaft; the kettle cover is provided with a stirring motor, and the stirring motor is used for driving the stirring shaft to rotate; the sampling mechanism is used for respectively sampling reaction media at different heights in the kettle body, and based on a fluid simulation optimization structure, the device can adapt to multiple reaction systems, is anti-clogging and leakage-free, and ensures the operation safety; the mixing uniformity is improved through double-layer blades, disturbance is reduced through stratified sampling, and precision is improved; a sampling mechanism is arranged in the stirring shaft, space is saved, lifting and self-cleaning are achieved through an automatic structure, the service life is prolonged through adaptive materials, and practicability and economical efficiency are both considered.

Description

A Leak-Free Sampling Reactor Based on Fluid Simulation Technical Field

[0001] This invention relates to the field of reactor sampling technology, and in particular to a leak-free sampling reactor based on fluid simulation. Background Technology

[0002] In the fields of chemical engineering, pharmaceuticals, and materials synthesis, reaction vessels serve as core reaction containers. The safety, accuracy, and equipment compatibility of their sampling operations directly impact product quality and production efficiency. The sampling process requires real-time monitoring of the reaction medium's state within the vessel to assess the reaction progress. Therefore, the sampling operation must avoid both safety hazards and material waste caused by reaction medium leakage, while ensuring the representativeness of the sample and preventing interference with the normal reaction system within the vessel.

[0003] Existing reactor sampling mechanisms mostly employ external sampling tube designs. While these are simple in structure and low in cost, they have significant technical drawbacks. Firstly, for solid-liquid mixed reaction systems, the location, diameter, and filtration structure of the external sampling tube lack targeted optimization. This makes it prone to pipe blockage due to solid particle accumulation. Furthermore, the pressure difference between the reactor interior and the sampling pipeline during sampling can easily lead to media leakage, especially in high-temperature and high-pressure reaction scenarios where insufficient sealing performance is even more pronounced, seriously threatening operational safety. Secondly, external sampling tubes struggle to achieve simultaneous multi-height, stratified sampling, and the sampling process easily disturbs the fluid flow within the reactor, resulting in samples that fail to reflect the true reaction conditions and leading to low sampling accuracy.

[0004] Some improved reactors employ built-in sampling structures, but most lack overall optimization using fluid simulation technology. Their agitator designs are often flawed, with poor adaptability in blade shape and installation location, leading to uneven mixing of the medium within the reactor and further affecting sample representativeness. Furthermore, many built-in sampling structures suffer from sealing design defects; the clearance between the sampling component and the agitator shaft easily causes media leakage, and residual media after sampling is difficult to clean, potentially causing cross-contamination and affecting subsequent reactions. In addition, the existing reactor's agitator drive components are difficult to adapt to reaction media of different viscosities and phases, and some equipment uses an integrated design, making installation and maintenance inconvenient. Material selection is not optimized for corrosion and wear scenarios, resulting in a short service life. Moreover, existing sampling mechanisms have low automation levels; stratified sampling requires frequent manual adjustments, making operation cumbersome, and they cannot achieve self-cleaning after sampling, increasing maintenance costs and operational risks.

[0005] A patent with publication number CN218766139U discloses a sampling device for a reaction vessel, belonging to the field of reaction vessel technology. It includes a reaction vessel body with a hollow stirring shaft installed inside. A sampling inner tube, rotating synchronously with the stirring shaft, is inserted inside the stirring shaft. Multiple connecting pipes are fixedly installed between the sampling inner tube and the stirring shaft, arranged in a staggered pattern along the vertical direction with equal spacing between adjacent pipes. One end of each connecting pipe communicates with the inner cavity of the reaction vessel body, and the other end communicates with the inner cavity of the sampling inner tube. Solenoid valves are installed inside each connecting pipe. The lower end of the sampling inner tube is connected to an outlet pipe via a rotary joint. This device allows for flexible sampling of reaction liquid at different heights within the vessel, offering high efficiency and addressing the issue of poor sampling safety. However, it is primarily used for liquid sampling and is prone to clogging or residue buildup when dealing with solid-liquid mixed reaction media, potentially contaminating subsequent sampling. Furthermore, the sampling process still requires manual intervention and is cumbersome. Summary of the Invention

[0006] The purpose of this invention is to provide a leak-free sampling reactor based on fluid simulation to solve the problem of media leakage caused by the gap between the sampling component and the stirring shaft.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a leak-free sampling reaction vessel based on fluid simulation, comprising: a vessel body, the interior of which is filled with a reaction medium, a stirring shaft rotating inside the vessel body, and a stirring head sleeved on the outer wall of the stirring shaft; a vessel lid, on which a stirring motor is provided, the stirring motor being used to drive the stirring shaft to rotate; and a sampling mechanism for sampling the reaction medium at different heights inside the vessel body.

[0008] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, the inner wall of the stirring shaft is provided with a through hole, the outer wall of the stirring shaft is arrayed with sampling holes, a sealing ball is movably provided in the sampling hole, the sealing ball is provided with a valve hole, and the valve hole connects the through hole and the reactor body after the sealing ball rotates along the horizontal plane.

[0009] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, a sampling chamber is slidably provided inside the stirring shaft, and a delay chamber is slidably provided inside the sampling chamber, and the delay chamber and the sampling chamber are spliced ​​together to form a complete sampling chamber.

[0010] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, the material density of the delay chamber is greater than that of the sampling chamber, and a torsion spring is provided between the delay chamber and the sampling chamber, the torsion spring being used to push the delay chamber to reset.

[0011] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, the outermost part of the sealing ball is a rubber layer, and the outer wall of the rubber layer extends into the through hole.

[0012] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, the stirring shaft is provided with a lead screw for rotation, the inner wall of the sampling chamber is provided with a vortex groove, and a lifting plug is slidably fitted in the vortex groove. When the lifting plug slides, the reaction medium located in the vortex groove is discharged.

[0013] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, a collection plate is also movably provided on the outer wall of the stirring shaft, and the collection plate is connected to the through hole.

[0014] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, a top sleeve is vertically fixed on one end face of the lifting plug.

[0015] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, wherein: a sealing cover is movably provided at the lower end of the stirring shaft, and a sliding column is provided on the upper surface of the sealing cover.

[0016] As a preferred embodiment of the leak-free sampling reactor based on fluid simulation of the present invention, wherein: the sliding column is slidably disposed inside the stirring shaft, and a first elastic element is provided between the stirring shaft and the sealing cover.

[0017] The beneficial effects of this invention are as follows: The core structural design is optimized through fluid simulation technology, adapting to various reaction systems such as liquid and solid-liquid mixtures, effectively avoiding sampling pipeline blockage; the vessel body and lid adopt a mechanical sealing structure, and the sampling mechanism can use a layered sampling tube on the outer wall of the vessel or a built-in stirring shaft structure, combined with sealing components such as sealing balls and torsion springs, combined with pressure distribution optimization design, to achieve zero leakage throughout the sampling process and ensure operational safety; the double-layered elliptical blade stirring head can improve the uniformity of medium mixing, and combined with the layered sampling design, it reduces the impact of fluid disturbance on the reaction system inside the vessel during sampling, improving sampling accuracy; the built-in sampling mechanism of the stirring shaft uses inertial drive to switch the sealing ball, resulting in a compact and space-saving structure; the ball screw structure enables automated lifting and self-cleaning of the sampling chamber, avoiding cross-contamination, and the overall structure balances practicality and economy, reducing overall cost and maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 is a schematic diagram of the leak-free sampling reactor based on fluid simulation in this invention.

[0020] Figure 2 is a schematic diagram of the internal structure of the vessel body in this invention.

[0021] Figure 3 is a schematic diagram of the stirring shaft structure in this invention.

[0022] Figure 4 is a schematic diagram of the state of the sealing ball in this invention.

[0023] Figure 5 is an enlarged view of the stirring head in this invention.

[0024] Figure 6 is a partially enlarged schematic diagram of region A in Figure 5 of this invention.

[0025] Figure 7 is a partially enlarged schematic diagram of region B in Figure 5 of this invention.

[0026] Figure 8 is a schematic diagram of the combination of the sampling chamber and the delay chamber in this invention.

[0027] Figure 9 is a schematic diagram of the internal structure of the sampling chamber in this invention.

[0028] In the diagram: 100, vessel body; 101, stirring shaft; 102, stirring head;

[0029] 200. Kettle lid; 201. Stirring motor;

[0030] 3001, Through hole; 3002, Sampling hole; 3003, Sealing ball; 3004, Valve hole; 3005, Sampling chamber; 3006, Delay chamber; 3007, Torsion spring;

[0031] 4001, Lead screw; 4002, vortex groove; 4003, lifting plug; 4004, collecting tray; 4006, top sleeve; 4007, sealing cover; 4008, sliding column; 4009, first elastic element. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Referring to Figures 1-9, the first embodiment of the present invention provides a leak-free sampling reactor based on fluid simulation, including: a reactor body 100, a reactor cover 200, and a sampling mechanism.

[0037] Specifically, the vessel body 100 is filled with a reaction medium, and a stirring shaft 101 is rotatably installed inside the vessel body 100. A stirring head 102 is sleeved on the outer wall of the stirring shaft 101. A stirring motor 201 is installed on the vessel cover 200, and the stirring motor 201 is used to drive the stirring shaft 101 to rotate.

[0038] The sampling mechanism is used to sample the reaction medium at different heights inside the vessel 100.

[0039] The reaction medium can be a pure liquid mixture or a solid-liquid mixture.

[0040] Preferably, the vessel body 100 is made of 316L stainless steel to prevent corrosion by reactants and improve service life; the stirring motor 201 is a servo motor, which can be a vertical motor or a horizontal motor that drives the stirring shaft 101 through a transmission component, depending on the volume distribution of the space on site.

[0041] Even better, the lid 200 and the body 100 are designed separately, with a mechanical seal between them to prevent the reaction medium from overflowing during stirring. The lid 200 can be a round lid or a flat lid, and the lower elliptical head achieves temperature control through a jacketed circulating water bath.

[0042] In particular, for the scenario of solid-liquid mixing reaction stirring, the mainstream vessel 100 model on the market was verified by the fluid simulation analysis technology in the existing technology. By comprehensively comparing the uniformity of material mixing after stirring, the shape of the internal chamber of vessel 100 was selected optimally, and the internal structure of vessel 100 as shown in Figure 2 was determined. Finally, it was adapted to reaction systems such as solid-liquid mixing, and the stirring effect in this scenario was improved.

[0043] Preferably, the stirring head 102 is a double-layered impeller, arranged in an array along the central axis of the vessel body 100. One stirring head 102 is located at the bottom of the vessel body 100, and the height of the other stirring head 102 is set according to the maximum capacity of the vessel body 100 and the type of medium being stirred. The higher the maximum capacity, the higher the position of the other stirring head 102. When the reaction medium is a solid-liquid mixture, the stirring head 102 is made of wear-resistant high-strength steel.

[0044] Among them, the blade shape of the stirring head 102 is elliptical. After multiple simulation tests by fluid simulation, the results were compared with the results shown in the front view vector diagram of the inside of the vessel, the top view velocity vector diagram of the upper layer of the stirring blade, and the phase cloud diagram of the upper layer of the stirring blade. It was found that the stirring effect and the uniformity of the medium mixing were the best when elliptical blades were selected.

[0045] Preferably, in this embodiment, the sampling mechanism is a sampling tube that is opened in each region of the outer wall of the vessel body 100, thereby realizing multi-region sampling and avoiding blockage.

[0046] Meanwhile, this embodiment uses fluid simulation to simulate the pressure distribution inside the vessel during the sampling process. The fluid simulation is a publicly available technology and will not be described in detail here. Ultimately, it ensures that there is no leakage throughout the sampling process and guarantees operational safety. At the same time, layered sampling avoids the impact of fluid disturbance on the reaction system inside the vessel during the sampling process and improves sampling accuracy.

[0047] Example 2

[0048] Referring to Figures 1-9, this is the second embodiment of the present invention. The difference is that in this embodiment, the sampling mechanism is located inside the stirring shaft 101 to completely prevent leakage and save space.

[0049] Specifically, the inner wall of the stirring shaft 101 is provided with a through hole 3001, and the outer wall of the stirring shaft 101 is provided with an array of sampling holes 3002. A sealing ball 3003 is movably provided in the sampling hole 3002. A valve hole 3004 is provided on the sealing ball 3003. After the sealing ball 3003 rotates along the horizontal plane, the valve hole 3004 connects the through hole 3001 and the vessel body 100.

[0050] In this embodiment, the sampling mechanism is located inside the stirring shaft 101. Specifically, a sampling chamber 3005 is slidably provided inside the stirring shaft 101, and a delay chamber 3006 is slidably provided inside the sampling chamber 3005. The delay chamber 3006 and the sampling chamber 3005 are spliced ​​together to form a complete sampling chamber.

[0051] Among them, the material density of the delay chamber 3006 is greater than that of the sampling chamber 3005, and a torsion spring 3007 is provided between the delay chamber 3006 and the sampling chamber 3005. The torsion spring 3007 is used to push the delay chamber 3006 to reset.

[0052] The through hole 3001 is coaxially located inside the stirring shaft 101. The inner diameter of the through hole 3001 is determined so as not to affect the strength of the stirring shaft 101 itself. In this embodiment, the stirring shaft 101 is driven by a horizontal motor, that is, the stirring shaft 101 is set perpendicular to the motor output shaft.

[0053] More preferably, the sampling holes 3002 are arranged in a linear array on the outer wall of the stirring shaft 101, and the through holes 3001 are connected to the vessel body 100. The inner wall of the sampling holes 3002 is provided with a spherical sliding cavity, which limits the sealing ball 3003, allowing it to rotate freely only within the spherical sliding cavity.

[0054] Preferably, the valve holes 3004 are horizontally arranged and initially fit against the inner wall of the sampling holes 3002, thereby sealing the sampling holes 3002. In this embodiment, the valve holes 3004 are symmetrically arranged, but the sampling chamber 3005 and the stirring shaft 101 do not rotate relative to each other. Therefore, only the sampling port on the side of the delay chamber 3006 is provided with a sealing ball 3003. The sampling hole 3002 on the side of the sampling chamber 3005 is sealed by a plug, while ensuring that the mass distribution of the stirring shaft 101 is uniform and preventing large shaking during rotation.

[0055] The sealing ball 3003 has two rotation directions, as shown in Figures 4, 5, and 8. The plane parallel to the horizontal plane in the plane containing the axis of the stirring shaft 101 is the reference plane in this embodiment, and the plane perpendicular to the reference plane in the plane containing the axis of the stirring shaft 101 is the vertical plane. The outermost part of the sealing ball 3003 is a rubber layer, and the outer wall of the rubber layer extends into the through hole 3001.

[0056] When the sampling chamber 3005 slides back and forth only in the axial direction of the through hole 3001, it causes the sealing ball 3003 to rotate around the axis of the valve hole 3004 in the vertical plane. At this time, the sampling hole 3002 is always closed, and the rotation of the sealing ball 3003 in the vertical plane cannot control the opening and closing of the valve hole 3004.

[0057] When the delay chamber 3006 rotates relative to the stirring shaft 101, it drives the sealing ball 3003 to rotate in the reference plane. At this time, the valve hole 3004 rotates horizontally to a state parallel to the axis of the sampling hole 3002, and the sampling hole 3002 is in the open state. When the delay chamber 3006 is reset, the sealing ball 3003 is also reset. Thus, the opening and closing of the valve hole 3004 is controlled by the rotation of the sealing ball 3003 in the reference plane.

[0058] Furthermore, as shown in Figure 8, the delay chamber 3006 is made of stainless steel, while the sampling chamber 3005 is made of aluminum alloy. The density and mass of the delay chamber 3006 are greater than those of the sampling chamber 3005, therefore the inertia of the delay chamber 3006 is greater than that of the sampling chamber 3005.

[0059] More preferably, in the initial state, the sampling chamber 3005 is a hollow cylinder with an arc of 180° cut in half, and the delay chamber 3006 is a hollow cylinder with an arc greater than 180° cut and is coaxially set with the sampling chamber 3005, so that the delay chamber 3006 can rotate in the sampling chamber 3005.

[0060] In the initial state, the delay chamber 3006 and the sampling chamber 3005 form a complete circle. Since the curvature of the delay chamber 3006 is greater than 180°, the two sides of the delay chamber 3006 are still partially located within the interlayer of the sampling chamber 3005, thus achieving a seal and preventing leakage of the sampling medium.

[0061] More preferably, the two ends of the torsion spring 3007 are connected to the bottom surface of the sampling chamber 3005 and the bottom surface of the delay chamber 3006, respectively. The elastic coefficient of the torsion spring 3007 is small, which can only slowly reset the delay chamber 3006 to the initial state. In this embodiment, the sampling chamber 3005 and the stirring shaft 101 are slidably connected by a groove, but the two cannot rotate relative to each other.

[0062] More preferably, by setting a limiting block, the delay chamber 3006 shown in Figure 8 in this embodiment can only rotate counterclockwise relative to the sampling chamber 3005; when the stirring shaft 101 drives the sampling chamber 3005 to rotate counterclockwise synchronously, although the inertia of the sampling chamber 3005 is less than that of the delay chamber 3006, the two remain relatively stationary under the push of the limiting block, and accelerate with the stirring shaft 101. After that, the solid-liquid mixed reaction medium reacts after being stirred and mixed.

[0063] When the reaction is complete, a sample needs to be taken to determine the degree of reaction. The stirring shaft 101 is stopped by the brake. At this time, the sampling chamber 3005 stops in sync with the stirring shaft 101. However, the delay chamber 3006 continues to rotate counterclockwise relative to the sampling chamber 3005 due to inertia and slides into the interlayer of the sampling chamber 3005. At the same time, it drives the sealing ball 3003 in contact with it to rotate.

[0064] At this time, a gap appears between the sampling chamber 3005 and the delay chamber 3006, and the sealing ball 3003 rotates in the horizontal plane until the valve hole 3004 connects the vessel body 100 and the through hole 3001 respectively. At this time, the solid-liquid mixture after the reaction is completed just enters the through hole 3001 through the valve hole 3004 of the sealing ball 3003 and enters the sampling chamber 3005. Since the medium still has a certain inertia and is in a flowing state, the solid-liquid mixture reaction medium in this layer will flow in evenly, achieving uniform sampling. After a period of sampling, the torsion spring 3007 drives the delay chamber 3006 to slowly reset, and at the same time drives the sealing ball 3003 to rotate in the opposite direction to reset, sealing the collected solid-liquid mixture medium.

[0065] It should be noted that in this embodiment, the sampling medium needs to be sucked away by the suction tube above the stirring shaft 101. When it is necessary to sample different layers, it is only necessary to adjust the height of the sampling chamber 3005 to the height of each sampling hole 3002 and limit it.

[0066] Example 3

[0067] Referring to Figures 1-9, the third embodiment of the present invention is based on the second embodiment, but differs in that the sampling chamber 3005 is automatically lifted and sampled by a ball screw.

[0068] Specifically, a lead screw 4001 is provided inside the stirring shaft 101 for rotation, and a vortex groove 4002 is provided on the inner wall of the sampling chamber 3005. A lifting plug 4003 is slidably fitted inside the vortex groove 4002. When the lifting plug 4003 slides, it discharges the reaction medium located in the vortex groove 4002.

[0069] Even better, the outer wall of the stirring shaft 101 is also movably provided with a collection plate 4004, which is connected to the through hole 3001.

[0070] The stirring shaft 101 has a hole on the outer wall of one end of the collection plate 4004, allowing the sampling medium to flow into the collection plate 4004. The lead screw 4001 passes through the sampling chamber 3005 and is fixedly connected to the nut seat at the bottom of the sampling chamber 3005. Thus, when the lead screw 4001 rotates, it drives the sampling chamber 3005 to rise and fall through the nut seat.

[0071] The sampling chamber 3005 is equipped with a solenoid valve (not shown in the figure) at the bottom. When the sampling chamber 3005 is taking a sample, the solenoid valve remains closed. When the sampling chamber 3005 completes the sampling and moves upward to the collection tray 4004, the solenoid valve automatically opens, allowing the medium to flow out from the bottom of the sampling chamber 3005.

[0072] Furthermore, a top sleeve 4006 is vertically fixed on one end face of the lifting plug 4003, a sealing cover 4007 is movably provided at the lower end of the stirring shaft 101, a sliding column 4008 is provided on the upper end face of the sealing cover 4007, the sliding column 4008 is slidably disposed inside the stirring shaft 101, and a first elastic element 4009 is provided between the stirring shaft 101 and the sealing cover 4007.

[0073] Among them, the first elastic element 4009 is a spring, which is sleeved on the outer wall of the slide column 4008 and always pulls the sealing cover 4007 to fit and seal towards the stirring shaft 101. One end of the slide column 4008 can only slide inside the stirring shaft 101 and cannot be disengaged.

[0074] More preferably, the upper end face of the sealing cover 4007 is provided with a convex ring, and the bottom surface of the stirring shaft 101 is provided with a groove. When the sealing cover 4007 is in contact with the bottom surface of the stirring shaft 101, the seal is achieved by the cooperation of the convex ring and the groove. The top sleeve 4006 and the lifting plug 4003 are initially located above the sampling chamber 3005.

[0075] In summary, during use, the sampling chamber 3005 can also be raised and lowered by rotating the lead screw 4001. When the sampling chamber 3005 descends to its lowest point, it pushes the sealing cover 4007 away from the stirring shaft 101 and lowers, creating a gap. At this time, the emergency stop operation in Example 2 is repeated to achieve automatic sampling. Subsequently, the lead screw 4001 rotates in the opposite direction to drive the sampling chamber 3005 to rise in the through hole 3001 until the top sleeve 4006 contacts the upper end face of the collection tray 4004 and cannot move. At this time, the sampling chamber 3005 continues to move upward, the solenoid valve opens, and the lifting plug 4003 pushes the solid-liquid mixed sample into the collection tray 4004. At this time, the sampling chamber 3005 also achieves self-cleaning to prevent interference with the next sampling process and prevent contamination.

[0076] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0077] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0078] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A leak-free sampling reactor based on fluid simulation, characterized in that... The apparatus includes: a vessel body (100) filled with a reaction medium, a stirring shaft (101) rotatably mounted inside the vessel body (100), and a stirring head (102) sleeved on the outer wall of the stirring shaft (101); a vessel cover (200) with a stirring motor (201) mounted on it, the stirring motor (201) driving the stirring shaft (101) to rotate; and a sampling mechanism located inside the vessel body (100) for sampling the reaction medium at different heights inside the vessel body (100).

2. The leak-free sampling reactor based on fluid simulation as described in claim 1, characterized in that... The inner wall of the stirring shaft (101) is provided with a through hole (3001), and the outer wall of the stirring shaft (101) is provided with sampling holes (3002). A sealing ball (3003) is movably provided in the sampling hole (3002). A valve hole (3004) is provided on the sealing ball (3003). After the sealing ball (3003) rotates in the horizontal reference plane, the valve hole (3004) connects the through hole (3001) and the vessel body (100).

3. The leak-free sampling reactor based on fluid simulation as described in claim 2, characterized in that... The sampling mechanism includes a sampling chamber (3005) that is slidably disposed within the stirring shaft (101), and a delay chamber (3006) that is slidably disposed inside the sampling chamber (3005). The delay chamber (3006) and the sampling chamber (3005) are spliced ​​together to form a complete sampling chamber.

4. The leak-free sampling reactor based on fluid simulation as described in claim 3, characterized in that... The material density of the delay chamber (3006) is greater than that of the sampling chamber (3005). A torsion spring (3007) is provided between the delay chamber (3006) and the sampling chamber (3005). The torsion spring (3007) is used to push the delay chamber (3006) to reset.

5. The leak-free sampling reactor based on fluid simulation as described in claim 4, characterized in that... The outermost part of the sealing ball (3003) is a rubber layer, and the outer wall of the rubber layer extends into the through hole (3001).

6. The leak-free sampling reactor based on fluid simulation as described in claim 5, characterized in that... The stirring shaft (101) is equipped with a lead screw (4001) that rotates inside. The inner wall of the sampling chamber (3005) is provided with a vortex groove (4002). A lifting plug (4003) is slidably fitted inside the vortex groove (4002). When the lifting plug (4003) slides, it discharges the reaction medium located in the vortex groove (4002).

7. The leak-free sampling reactor based on fluid simulation as described in claim 6, characterized in that... The outer wall of the stirring shaft (101) is also provided with a collecting plate (4004), which is connected to the through hole (3001).

8. The leak-free sampling reactor based on fluid simulation as described in claim 7, characterized in that... The lifting plug (4003) has a top sleeve (4006) fixed vertically on one end face.

9. The leak-free sampling reactor based on fluid simulation as described in claim 8, characterized in that... The lower end of the stirring shaft (101) is provided with a sealing cover (4007), and the upper end of the sealing cover (4007) is provided with a sliding column (4008).

10. The leak-free sampling reactor based on fluid simulation as described in claim 9, characterized in that... The sliding column (4008) is slidably disposed inside the stirring shaft (101), and a first elastic element (4009) is provided between the stirring shaft (101) and the sealing cover (4007).

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